Assembly jig for nested welding pipeline

Abstract

The utility model discloses a nesting welding pipeline assembling jig which comprises a positioning assembly, and the positioning assembly comprises two positioning discs, three sliding grooves, a positioning motor, a driving gear, a limiting disc, a driving disc, a gear ring, three sliding seats, a positioning claw, a connecting rod and two supporting frames. The positioning motor drives the driving gear to rotate, under the cooperation of the gear ring, the driving disc and the sliding seat, the three positioning claws can clamp and position a pipeline, and due to the fact that the three positioning claws all move in the direction close to the axis of the driving disc, the pipeline can be automatically positioned, the axis of the pipeline coincides with the axis of the positioning disc, and the pipeline can be accurately positioned. And then the double-end lead screw is driven by the assembling motor to rotate, the two pipelines get close to each other, then assembling of the two pipelines can be achieved, the pipelines with different diameters can be effectively clamped and positioned, and then the assembling precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of assembly fixtures, specifically nested welding pipeline assembly fixture, belong to assembly fixture technical field. BACKGROUND

[0002] Nested welding pipeline is a special pipeline structure, it is embedded together by welding mode to different specifications pipeline or pipeline component, forms a whole structure.Nested welding pipeline is usually composed of two or more layers of pipeline, these pipelines are connected together by accurate welding process.Inner pipeline can be nested in outer pipeline, forms a tight connection structure.This structure not only improves the overall strength of pipeline, but also enhances its corrosion resistance.

[0003] Before nested welding pipeline, a crucial step is to carry out accurate positioning assembly to pipeline.This process usually involves two pipelines are set in each other, to ensure that they can be closely fitted in subsequent welding process, form stable structure.

[0004] When assembling pipeline, special assembly fixture is generally used to assist the assembly work of two pipelines.However, in actual operation, since pipeline often has different diameters, in addition to the design limitation of assembly fixture, it is difficult to simultaneously position two pipelines effectively, and then lead to assembly precision to decline, for this purpose, a kind of nested welding pipeline assembly fixture is presented. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of nested welding pipeline assembly fixture to solve one of the problems presented in the above background.

[0006] The utility model is implemented by the following technical solutions: a kind of nested welding pipeline assembly fixture, including positioning assembly, the positioning assembly includes two positioning discs, three sliding grooves, positioning motor, drive gear, limit disc, drive disc, gear ring, three sliding seats, positioning claw, connecting rod and two support frames;

[0007] Two positioning discs are coaxially arranged, three sliding grooves are symmetrically opened in the inside of positioning disc, the sliding seat is slidably connected to the inner side wall of sliding groove, the limit disc is fixedly connected to one side of positioning disc by connecting rod, one side of drive disc is rotatably connected with limit disc, one side of three sliding seats is all screw-connected to the other side of drive disc, drive disc is coaxially arranged with positioning disc, positioning claw is fixedly connected to the other side of sliding seat, gear ring is fixedly connected to the outer side wall of drive disc, drive gear is fixedly connected to the output shaft of positioning motor, two positioning discs are installed on the upper surface of two support frames.

[0008] As a further preferred embodiment of the present technical solution: the positioning motor is installed on the outer side wall of the positioning disc, and the outer side wall of the driving gear is engaged with the outer side wall of the gear ring.

[0009] As a further preferred embodiment of the present technical solution: the bottom end of each of the two support frames is fixedly connected with a sliding block, and the interiors of the two sliding blocks are threadedly connected with a double-end screw rod.

[0010] As a further preferred embodiment of the present technical solution: one end of the double-end screw rod is installed with an assembling motor.

[0011] As a further preferred embodiment of the present technical solution: the exterior of the sliding block is provided with a main body assembly, which comprises a base and two limiting grooves symmetrically formed on the upper surface of the base.

[0012] As a further preferred embodiment of the present technical solution: the two sliding blocks are symmetrically and slidingly connected to the inner side walls of the two limiting grooves.

[0013] As a further preferred embodiment of the present technical solution: the double-end screw rod is rotatably connected to the interior of the base.

[0014] As a further preferred embodiment of the present technical solution: the assembling motor is installed on one side of the base.

[0015] The utility model discloses a positioning motor drives the rotation of the driving gear, and under the cooperation of the gear ring, the driving disc and the sliding seat, three positioning claws can clamp and position the pipeline. Since the three positioning claws move towards the direction of the driving disc axis, the pipeline can be automatically positioned, the axis of the pipeline coincides with the axis of the positioning disc, and the utility model can be applied to pipelines of different sizes. Then, the assembling motor drives the rotation of the double-end screw rod, two pipelines are close to each other, and the assembly of the two pipelines can be realized. The pipeline of different diameters can be effectively clamped and positioned, and the assembly precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a positioning claw installation position schematic diagram of the utility model;

[0019] Figure 3 The positioning assembly structure exploded schematic view of the utility model;

[0020] Figure 4 The driving disc structure schematic view of the utility model;

[0021] Figure 5 The sliding seat and the positioning claw connection schematic view of the utility model.

[0022] In the figure: 101, positioning assembly;11, positioning disc;12, sliding slot;13, positioning motor;14, driving gear;15, limit disc;16, driving disc;17, gear ring;18, sliding seat;19, positioning claw;20, connecting rod;21, support frame;22, sliding block;23, double head screw;24, assembly motor;301, main body assembly;31, base;32, limit groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] EMBODIMENT

[0025] Please refer to Figures 1-5 The utility model provides a kind of technical solutions: a nested welding pipeline assembly fixture, including positioning assembly 101, positioning assembly 101 is used to realize the clamping positioning of pipe fitting;

[0026] Positioning assembly 101 includes two positioning discs 11, three sliding slots 12, positioning motor 13, driving gear 14, limit disc 15, driving disc 16, gear ring 17, three sliding seats 18, positioning claw 19, connecting rod 20 and two support frames 21;

[0027] The two positioning discs 11 are coaxially arranged, three sliding grooves 12 are symmetrically arranged in the inner part of the positioning disc 11, the sliding seat 18 is slidably connected to the inner side wall of the sliding groove 12, and the position of the sliding seat 18 can be limited through the sliding groove 12; since the three sliding grooves 12 are symmetrically arranged in the inner part of the positioning disc 11, and the three sliding seats 18 are all threadedly connected to the other side of the driving disc 16, when the driving disc 16 rotates, the three sliding seats 18 can synchronously move towards the direction close to the axis of the driving disc 16 at the same speed and displacement under the action of the screw transmission. The synchronous movement ensures the uniform clamping of the three positioning claws 19 to the pipeline, so that the pipeline will not be deviated or tilted during the clamping process. At the same time, since the two positioning discs 11 are coaxially arranged, and the design and installation position of the positioning claw 19 ensure its center positioning effect to the pipeline, the axis of the clamped pipeline can be accurately coincided with the axis of the positioning disc 11, so as to realize the high-precision automatic positioning of the pipeline.

[0028] The limiting disc 15 is fixedly connected to one side of the positioning disc 11 through the connecting rod 20, one side of the driving disc 16 is rotatably connected to the limiting disc 15, and the position of the driving disc 16 can be limited through the limiting disc 15.

[0029] The other side of the driving disc 16 is coaxially arranged with the positioning disc 11, and the opposite surface of the driving disc 16 and the sliding seat 18 is provided with corresponding threads, so that when the driving disc 16 rotates, the driving disc 16 can simultaneously drive the three sliding seats 18, the three sliding seats 18 slide in the sliding groove 12, and the three sliding seats 18 all move towards the direction close to the axis of the driving disc 16.

[0030] The positioning claw 19 is fixedly connected to the other side of the sliding seat 18, and the sliding seat 18 drives the positioning claw 19 when moving towards the direction close to the axis of the driving disc 16, so that the three positioning claws 19 can clamp and position the pipeline, and one pipeline is fixedly arranged in each of the two positioning discs 11, and since the two positioning discs 11 are coaxially arranged, the axes of the two pipelines coincide after being clamped and fixed.

[0031] The gear ring 17 is fixedly connected to the outer side wall of the driving disc 16, the driving gear 14 is fixedly connected to the output shaft of the positioning motor 13, the two positioning discs 11 are installed on the upper surface of the two supporting frames 21, the positioning motor 13 is installed on the outer side wall of the positioning disc 11, the outer side wall of the driving gear 14 is meshingly connected to the outer side wall of the gear ring 17, the driving gear 14 is driven to rotate by the positioning motor 13, the driving gear 14 drives the gear ring 17 to rotate through the teeth, the gear ring 17 drives the driving disc 16 to rotate, and thus the driving of the positioning claw 19 can be realized.

[0032] In this embodiment, specifically: the bottom end of the two support frames 21 is fixedly connected with a sliding block 22, the interiors of the two sliding blocks 22 are threadedly connected with a double-head screw rod 23, one end of the double-head screw rod 23 is provided with an assembling motor 24, the double-head screw rod 23 is driven to rotate by the assembling motor 24, the double-head screw rod 23 drives the support frame 21 through the sliding block 22, the support frame 21 drives the positioning disc 11, the two positioning discs 11 respectively drive one pipeline, the two pipelines are close to each other, thereby realizing the assembling of the pipelines. The double-head screw rod 23 is a screw rod structure with two segments of threads with different rotation directions, the threads at the two ends of the double-head screw rod 23 are matched with the threaded holes in the interiors of the two sliding blocks 22 respectively. When the double-head screw rod 23 is driven to rotate by the assembling motor 24, the two sliding blocks 22 will move towards or away from each other under the constraint of the limiting grooves 32 due to the opposite rotation directions of the threads at the two ends. In this assembling jig, the double-head screw rod 23 drives the support frame 21 and the positioning disc 11 to move in this way, realizes the mutual approaching or moving away of the two pipelines, and thus completes the assembling operation of the pipelines.

[0033] In this embodiment, specifically: the exterior of the sliding block 22 is provided with a main body assembly 301, the main body assembly 301 comprises a base 31 and two limiting grooves 32, one limiting groove 32 is symmetrically formed on the upper surface of the base 31, the two sliding blocks 22 are symmetrically and slidingly connected to the inner side walls of the two limiting grooves 32, the double-head screw rod 23 is rotatably connected to the interior of the base 31, and the assembling motor 24 is installed on one side of the base 31. The base 31 can enhance the stability of the overall structure.

[0034] Working principle or structural principle: when in use, one pipeline is placed into one positioning disc 11, the driving gear 14 is driven to rotate by the positioning motor 13, the driving gear 14 drives the gear ring 17 to rotate through the teeth, the gear ring 17 drives the driving disc 16 to rotate, the driving disc 16 simultaneously drives the three sliding seats 18, the three sliding seats 18 slide in the sliding grooves 12, the three sliding seats 18 all move towards the direction close to the axis of the driving disc 16, the sliding seat 18 drives the positioning claw 19, at this time, the pipeline can be clamped and positioned by the three positioning claws 19, and similarly, the second pipeline is placed into the other positioning disc 11 to be clamped and positioned, the two pipelines are clamped and positioned, and the axes coincide.

[0035] The double-head screw rod 23 is driven to rotate by the assembling motor 24, the double-head screw rod 23 drives the support frame 21 through the sliding block 22, the support frame 21 drives the positioning disc 11, the two positioning discs 11 respectively drive one pipeline, and the two pipelines are close to each other, thereby realizing the assembling of the two pipelines.

[0036] In the installation of the nested welding pipeline assembly fixture, the coaxiality error of the two positioning discs 11 should be ensured to be less than 0.05 mm, so as to ensure the accuracy of the pipeline assembly. The working environment temperature range of the assembly fixture is -10℃ to 40℃, and the humidity range is 20% to 80%, and exceeding this range may affect the performance and assembly accuracy of each component. During use, it is recommended to regularly check the running state of the positioning motor 13 and the assembly motor 24, and whether the connection between each component is firm, such as checking the cooperation gap between the sliding block 22 and the limiting groove 32, the wear condition of the positioning claw 19, etc. The assembly fixture is maintained comprehensively every 2 months, including lubricating each transmission component (such as the driving gear 14, the gear ring 17, the double-end screw 23, etc.), checking and adjusting the installation position and fastening degree of each component, so as to ensure the normal work and assembly accuracy of the assembly fixture.

[0037] The nested welding pipeline assembly fixture fully considers the optimization of the assembly process in design, and can quickly realize the positioning and assembly operation of the pipeline through the cooperative work of the positioning motor 13 and the assembly motor 24. According to actual test, under normal working conditions, the time required for completing the assembly operation of two pipelines is about 5 minutes, the assembly efficiency is improved by 30% compared with the traditional assembly fixture, the production cycle is greatly shortened, the production efficiency is improved, and significant economic benefits are brought to the user.

[0038] The assembly fixture is suitable for pipelines with a diameter in the range of 20mm to 100mm, and through reasonable design of the structural size of the positioning claw 19 and the transmission parameters of the driving disc 16, the pipelines with different diameters in the range can be effectively clamped and positioned, various actual production requirements are met, and the versatility of the assembly fixture is improved.

[0039] The above only describes the preferred embodiments of the present application, and does not limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A nested welded pipe assembly fixture, characterized by, The utility model provides a positioning assembly (101) comprising two positioning discs (11), three sliding grooves (12), a positioning motor (13), a drive gear (14), a limiting disc (15), a drive disc (16), a gear ring (17), three sliding seats (18), a positioning claw (19), a connecting rod (20) and two support frames (21). The two positioning discs (11) are coaxially arranged, the three sliding grooves (12) are symmetrically formed in the inside of the positioning disc (11), the sliding seat (18) is slidably connected to the inner side wall of the sliding groove (12), the limiting disc (15) is fixedly connected to one side of the positioning disc (11) through the connecting rod (20), one side of the drive disc (16) is rotatably connected with the limiting disc (15), one side of the three sliding seats (18) is threadedly connected to the other side of the drive disc (16), the drive disc (16) is coaxially arranged with the positioning disc (11), the positioning claw (19) is fixedly connected to the other side of the sliding seat (18), the gear ring (17) is fixedly connected to the outer side wall of the drive disc (16), the drive gear (14) is fixedly connected to the output shaft of the positioning motor (13), and the two positioning discs (11) are installed on the upper surfaces of the two support frames (21).

2. The nested welded tubing string assembly fixture of claim 1, wherein, The positioning motor (13) is installed on the outer side wall of the positioning disc (11), and the outer side wall of the drive gear (14) is meshedly connected to the outer side wall of the gear ring (17).

3. The nested welded tubing string assembly fixture of claim 1, wherein, The bottom ends of the two support frames (21) are fixedly connected with sliding blocks (22), and the interiors of the two sliding blocks (22) are commonly threadedly connected with double-head lead screws (23).

4. The nested welded tubing string assembly fixture of claim 3, wherein, One end of the double-head lead screw (23) is installed with an assembling motor (24).

5. The nested welded tube assembly fixture of claim 4, wherein, The outer part of the sliding block (22) is provided with a main body assembly (301), and the main body assembly (301) comprises a base (31) and two limiting grooves (32).

6. The nested welded tube assembly fixture of claim 5, wherein, The two sliding blocks (22) are symmetrically and slidably connected to the inner side walls of the two limiting grooves (32).

7. The nested welded tube assembly fixture of claim 5 wherein, The double-head lead screw (23) is rotatably connected to the inside of the base (31).

8. The nested welded tube assembly fixture of claim 5 wherein, The assembling motor (24) is installed on one side of the base (31).

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