Internal welding device for small-caliber stainless steel pipeline

Abstract

The utility model relates to the technical field of pipeline welding, in particular to an internal welding device for a small-caliber stainless steel pipeline, which comprises a small laser welding gun, an internal extending rod is sleeved outside an optical fiber cable, a front support component is inserted and assembled at the front end of the internal extending rod, and the front end of the front support component is hinged and assembled with the small laser welding gun. A front supporting assembly and a rear supporting assembly which are symmetrically arranged are arranged at the front side end and the rear side end of the inner stretching rod in a sleeved and supported mode, a wire supply assembly is assembled at the rear end of the inner stretching rod and comprises a welding wire, the welding wire penetrates through the lower inner portion of the inner stretching rod, and the front end of the welding wire is located below the head end of the small laser welding gun. A video recording assembly is supported on the top of the front supporting assembly and electrically connected with the processing module through a data line, and the data line penetrates through the upper portion of the interior of the inner stretching rod in a penetrating mode. Auxiliary adjustment supporting and stretching into the interior for welding can be conveniently carried out according to the welding requirement of the small-caliber stainless steel pipeline, and the operation and use efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically to an internal welding device for small-diameter stainless steel pipelines. Background Technology

[0002] In modern industry, small-diameter stainless steel pipes are widely used in food processing, pharmaceutical manufacturing, semiconductor production and other industries due to their excellent corrosion resistance, high strength and cleanliness. In processing and production, it is sometimes necessary to weld their inner walls to ensure their airtightness and facilitate stable transportation.

[0003] In response, Chinese patent application number CN202123158494.0 discloses a pipe internal welding device and a pipe internal welding system. The pipe internal welding device includes a movable base, a rotating frame, a drive assembly, and multiple welding arms. The movable base is movable along a front-to-back direction. The rotating frame is rotatably mounted on the movable base along a front-to-back axis. The drive assembly drives the rotating frame to rotate. Multiple welding arms extend laterally outward from the rotating frame and are fixedly mounted on it. The welding arms are spaced apart circumferentially along the rotating frame. Each welding arm has a roller at its free end, and a welding torch assembly is located on one side of each roller. The positions of the roller and the welding torch assembly along the length of the welding arm are adjustable. The distance between the welding torch assembly and the inner wall of the pipe is maintained at a predetermined dimension.

[0004] However, existing welding equipment is inconvenient to assist in the adjustment and support and to extend into the interior for welding small-diameter stainless steel pipes, which affects the efficiency of operation.

[0005] Therefore, in order to solve the above problems, an internal welding device for small-diameter stainless steel pipes is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide an internal welding device for small-diameter stainless steel pipes, so as to solve the problem mentioned in the background art that the existing welding devices are inconvenient to assist in the adjustment and support and extend into the inside for welding according to the welding needs of small-diameter stainless steel pipes, which affects the efficiency of operation and use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a small-diameter stainless steel pipe internal welding device, comprising a small laser welding gun, wherein the small laser welding gun is connected to a laser generating component via an optical fiber cable, and the top of the laser generating component is equipped with a processing module and a control display panel, and the control display panel and the processing module are electrically connected to the laser generating component.

[0008] The fiber optic cable is externally fitted with an inner extension rod, and a front support assembly is inserted and assembled at the front end of the inner extension rod. The front end of the front support assembly is hinged to a small laser welding gun. The front and rear ends of the inner extension rod are fitted with symmetrically arranged front support assemblies and rear support assemblies. The rear end of the inner extension rod is equipped with a wire feeding assembly, which includes a solder wire. The solder wire passes through the lower interior of the inner extension rod, and the front end of the solder wire is located below the tip of the small laser welding gun. The top of the front support assembly supports a recording assembly, and the recording assembly is electrically connected to the processing module via a data cable, which passes through the upper interior of the inner extension rod.

[0009] As a further step of this solution, the front support assembly includes a front sleeve and an inner support sleeve. The inner support sleeve is installed inside the front sleeve via a bearing, and an inner transverse groove corresponding to the inner extension rod is opened inside the inner support sleeve. A side support rod is fixed on the outer wall of the front support assembly, and an inner support rod is threaded into the inner support rod. A universal wheel is provided at the outer end of the inner support rod, and the inner end of the universal wheel is threaded into the outer end of the inner support rod. A limiting nut is threaded on the outer wall of the inner support rod, and the limiting nut is located at the outer end of the side support rod.

[0010] As a further step of this solution, the three sets of side support rods are evenly distributed on the outer wall of the front sleeve. The front support assembly and the rear support assembly are also provided. The rear support assembly is fixed with a rear upper plate. An upper lead screw is inserted through the interior of the rear upper plate. The front upper plate is fixed to the front upper plate at the front end. The front upper plate is supported on the top of the front support assembly. A side lead screw parallel to the upper lead screw is fixed on the lower side of the front upper plate. The rear end of the side lead screw is also inserted through the interior of the rear upper plate. Both the upper lead screw and the side lead screw are threaded with nuts on their rear sides. The two sets of nuts are located on both sides of the rear upper plate.

[0011] As a further step of this solution, the front support assembly includes a front crossbeam, and an expansion joint is inserted and assembled inside the front side of the front crossbeam. A front hinge seat is fixed below the front end of the expansion joint, and a front hinge tongue corresponding to the front hinge seat is fixed at the tail end of the small laser welding gun. The front hinge seat and the front hinge tongue are hinged by a screw, and fastening nuts are threaded on both ends of the screw. An upper support beam is supported on the top of the front crossbeam, and the front end of the upper support beam is supported and assembled with the camera assembly. Corresponding through slots for fiber optic cables are opened inside the front crossbeam and the expansion joint, and a through slot for data cables is opened inside the upper support beam.

[0012] As a further step of this solution, an inner insert rod is fixedly provided at the rear end of the front crossbeam, and the inner insert rod is inserted and assembled at the front end of the inner extension rod. The front end of the inner extension rod has a corresponding inner slot. A screw is threaded into the front end of the inner extension rod, and the inner end of the screw abuts against the outer wall of the inner insert rod. A side pin is also threaded into the outer wall of the front end of the front crossbeam, and the side pin abuts against the outer wall of the telescopic joint. A washer is filled between the front hinge seat and the front hinge tongue, and the washer is sleeved on the outer wall of the screw pin. An outer torsion block is fixed at the outer end of the screw pin.

[0013] As a further step of this solution, the inner extension rod has a central through hole corresponding to the optical fiber cable, an upper through hole corresponding to the data cable at the top, a lower through hole corresponding to the solder wire at the bottom, and a connecting front guide nozzle integrally provided at the bottom front end of the inner extension rod.

[0014] As a further step of this solution, the wire feeding assembly also includes a wire winding spool, and the rear end of the solder wire is wound and assembled inside the wire winding spool. An assembly shaft is installed inside the wire winding spool through a bearing, and a mounting frame is supported at both ends of the assembly shaft. The mounting frame is bolted to the outer wall of the rear end of the inner extension rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are: this utility model facilitates auxiliary adjustment and support and internal welding according to the welding needs of small-diameter stainless steel pipes, which helps to improve the efficiency of operation and use.

[0016] 1. This utility model features an inner extension rod, which facilitates the support and assembly of a small laser welding gun. The front and rear support components then work together to further support the inner extension rod, making it easier to insert it into the pipe. This also facilitates subsequent welding operations. Therefore, it is beneficial for auxiliary insertion and adjustment of support when welding small-diameter pipes, making the operation more convenient and efficient. This design improves the convenience and practicality of the inner welding device for small-diameter stainless steel pipes.

[0017] 2. This utility model, by incorporating a camera component, facilitates auxiliary monitoring when the inner extension rod is inserted. This monitoring is achieved through the cooperation of the camera component, data cable, processing module, and control display panel, making the internal welding of small-diameter stainless steel pipes more convenient and intuitive. It also facilitates timely adjustments, making the operation more convenient and stable, less prone to damage and danger, and more efficient. This design improves the convenience and practicality of the internal welding device for small-diameter stainless steel pipes. Attached Figure Description

[0018] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side perspective three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a side view of the exploded three-dimensional assembly of a partial structure at the joint between the inner extension rod and the front support assembly of this utility model;

[0021] Figure 4 This is a three-dimensional front view sectional view of a partial structure of the front support component of this utility model;

[0022] Figure 5 This is a side perspective three-dimensional schematic diagram of a partial structure of the wire feeding assembly of this utility model;

[0023] In the diagram: 100, small laser welding gun; 110, fiber optic cable; 120, laser generator assembly; 130, inner extension rod; 131, central through hole; 132, lower through hole; 133, upper through hole; 134, inner insert rod; 135, inner slot; 136, screw; 140, front support assembly; 141, front crossbeam; 142, telescopic joint; 143, front hinge seat; 144, front hinge tongue; 145, screw pin; 146, fastening nut; 147, washer; 148, external torsion block; 149, side pin; 150, front support assembly; 151, front sleeve; 152. 153. Inner support sleeve; 154. Inner transverse groove; 155. Side support rod; 156. Inner support rod; 157. Caster wheel; 168. Limit nut; 169. Rear support assembly; 160. Rear upper plate; 161. Upper lead screw; 162. Front upper plate; 163. Side lead screw; 164. Thread nut; 175. Wire feeding assembly; 176. Solder wire; 177. Front guide nozzle; 178. Wire winding reel; 179. Assembly shaft; 170. Reel mounting frame; 181. Camera assembly; 182. Data cable; 183. Processing module; 184. Upper support beam; 190. Control display panel. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5 One embodiment provided by this utility model:

[0026] A small-diameter stainless steel pipe internal welding device includes a small laser welding gun 100, which is connected to a laser generating component 120 via an optical fiber cable 110. A processing module 182 and a control display panel 190 are mounted on the top of the laser generating component 120, and the control display panel 190 and the processing module 182 are electrically connected to the laser generating component 120. An inner extension rod 130 is sleeved outside the optical fiber cable 110, and a front support component 140 is inserted and mounted at the front end of the inner extension rod 130. The front end of the front support component 140 is hinged to the small laser welding gun 100. The front support assembly 150 and the rear support assembly 160 are symmetrically arranged and sleeved on the front and rear ends of the extension rod 130. The rear end of the inner extension rod 130 is equipped with a wire feeding assembly 170, which includes a solder wire 171. The solder wire 171 passes through the lower interior of the inner extension rod 130, and the front end of the solder wire 171 is located below the head end of the small laser welding gun 100. The top of the front support assembly 140 supports a camera assembly 180, which is electrically connected to the processing module 182 via a data cable 181. The data cable 181 passes through the upper interior of the inner extension rod 130.

[0027] As described in more detail in this embodiment, the front support assembly 150 includes a front sleeve 151 and an inner support sleeve 152. The inner support sleeve 152 is installed inside the front sleeve 151 by a bearing, and an inner transverse groove 153 corresponding to the inner extension rod 130 is provided inside the inner support sleeve 152. A side support rod 154 is fixedly provided on the outer wall of the front support assembly 150, and an inner support rod 155 is threadedly inserted into the side support rod 154. A universal wheel 156 is provided at the outer end of the inner support rod 155, and the inner end of the universal wheel 156 is threadedly installed on the outer end of the inner support rod 155. A limiting nut 157 is threadedly sleeved on the outer wall of the inner support rod 155, and the limiting nut 157 is located at the outer end of the side support rod 154. This facilitates the adjustment of the external support of the front support assembly 150, making subsequent operation and use more convenient and facilitating the adjustment of the support according to the inner diameter of the pipe.

[0028] As described in more detail in this embodiment, three sets of side support rods 154 are evenly distributed on the outer wall of the front sleeve 151. The front support assembly 150 and the rear support assembly 160 are similarly configured. A rear upper plate 161 is fixed to the top of the rear support assembly 160. An upper lead screw 162 is inserted through the rear upper plate 161, and a front upper plate 163 is fixed to the front end of the upper lead screw 162. The front upper plate 163 is supported on the top of the front support assembly 150, and a part is fixed to the lower side of the front upper plate 163, which is flush with the upper lead screw 162. The side lead screw 164 is inserted through the rear end of the upper rear plate 161. The upper lead screw 162 and the side lead screw 164 are threaded with threaded nuts 165 on their rear sides. The two sets of threaded nuts 165 are located on both sides of the upper rear plate 161. This facilitates the horizontal support of the front support assembly 150 for the inner extension rod 130, and also facilitates the limiting support between the front support assembly 150 and the rear support assembly 160, so that the distance between them can be adjusted according to the needs of use.

[0029] As described in more detail in this embodiment, the front support assembly 140 includes a front crossbeam 141, and a telescopic joint 142 is inserted and assembled inside the front side of the front crossbeam 141. A front hinge seat 143 is fixedly provided below the front end of the telescopic joint 142, and a front hinge tongue 144 corresponding to the front hinge seat 143 is fixedly provided at the tail end of the small laser welding gun 100. The front hinge seat 143 and the front hinge tongue 144 are hinged together by a screw pin 145, and fastening nuts 146 are threaded on both ends of the screw pin 145. The front crossbeam 141 The top is supported by an upper support beam 183, and the front end of the upper support beam 183 is supported and assembled with the camera component 180. The front crossbeam 141 and the telescopic joint 142 are respectively provided with through slots corresponding to the fiber optic cable 110, and the upper support beam 183 is provided with through slots corresponding to the data cable 181. This facilitates the auxiliary assembly of the front support component 140, and makes it easier to support and adjust the inner extension rod 130 and the small laser welding gun 100, making subsequent use more convenient.

[0030] As described in more detail in this embodiment, an inner insert rod 134 is fixedly provided at the rear end of the front crossbeam 141, and the inner insert rod 134 is inserted and assembled at the front end of the inner extension rod 130. A corresponding inner slot 135 is provided at the front end of the inner extension rod 130, and a screw 136 is threadedly inserted into the front end of the inner extension rod 130, with the inner end of the screw 136 abutting against the outer wall of the inner insert rod 134. Similarly, a side pin 149 is threadedly inserted into the outer wall of the front end of the front crossbeam 141, and the side pin 149 abuts against the outer wall of the telescopic joint 142. The front hinge seat 143 and the front... A washer 147 is filled between the hinge tongues 144, and the washer 147 is sleeved on the outer wall of the screw pin 145. An external torsion block 148 is fixed at the outer end of the screw pin 145. This facilitates the direct disassembly and assembly of the inner extension rod 130 and the front support assembly 140, and also facilitates limiting the position during adjustment, making the operation more convenient. It also facilitates the adjustment and support of the tilt angle of the small laser welding gun 100 by tightening the screw pin 145 and the fastening nut 146 with the cooperation of the washer 147.

[0031] As described in more detail in this embodiment, the inner extension rod 130 has a central through hole 131 corresponding to the optical fiber cable 110, and the upper part of the inner extension rod 130 has an upper through hole 133 corresponding to the data cable 181. The bottom of the inner extension rod 130 has a lower through hole 132 corresponding to the solder wire 171. The front end of the bottom of the inner extension rod 130 is integrally provided with a communicating front guide nozzle 172. In this way, during assembly and use, it is convenient to assist in insertion and passing through as needed. At the same time, with the cooperation of the front guide nozzle 172 and the lower through hole 132, it is convenient to guide the solder wire 171 to extend into the machine.

[0032] As described in more detail in this embodiment, the wire feeding assembly 170 also includes a wire winding spool 173, and the rear end of the solder wire 171 is wound and assembled inside the wire winding spool 173. An assembly shaft 174 is installed inside the wire winding spool 173 through a bearing, and a mounting bracket 175 is mounted at both ends of the mounting shaft 174. The mounting bracket 175 is bolted to the outer wall of the rear end of the inner extension rod 130. In this way, during assembly and use, it is convenient to manually rotate the wire winding spool 173 as needed to drive the solder wire 171 to be released and rewound after insertion, making subsequent welding material supply more convenient.

[0033] Working principle: During assembly and use, according to the required pipe diameter, the front support assembly 150 is adjusted externally with the cooperation of the side support rod 154 and the inner support rod 155. This allows the front support assembly 150 and the rear support assembly 160 to be easily supported on the inner wall of the pipe for sliding support and subsequent operation with the cooperation of the caster wheel 156. This facilitates the horizontal support of the inner extension rod 130, making subsequent use more convenient. Then, the small laser welding gun 100 is inserted into the pipe and reaches the welding point with the cooperation of the inner extension rod 130 and the front support assembly 140. Depending on the pipe wall thickness, it is selected whether wire feeding is required and whether the welding wire 171 needs to be inserted. During welding, with the assistance of the camera assembly 180, auxiliary monitoring is facilitated with the cooperation of the control display panel 190, making the operation more convenient, stable and safe. The operation ends here.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A small-diameter stainless steel pipe internal welding device, comprising a small laser welding gun (100), wherein the small laser welding gun (100) is connected to a laser generating component (120) via an optical fiber cable (110), wherein a processing module (182) and a control display panel (190) are mounted on the top of the laser generating component (120), and the control display panel (190) and the processing module (182) are electrically connected to the laser generating component (120); Its features are: The optical fiber cable (110) is externally fitted with an inner extension rod (130), and a front support assembly (140) is inserted and assembled at the front end of the inner extension rod (130). The front end of the front support assembly (140) is hinged to a small laser welding gun (100). The front and rear ends of the inner extension rod (130) are fitted with symmetrically arranged front support assemblies (150) and rear support assemblies (160). The rear end of the inner extension rod (130) is equipped with a wire feeding assembly (170). The device includes a solder wire (171) which passes through the interior of the inner extension rod (130) and the front end of the solder wire (171) is located below the head of the small laser welding gun (100). The front support assembly (140) supports a camera assembly (180) on top and the camera assembly (180) is electrically connected to the processing module (182) via a data cable (181) which passes through the upper part of the interior of the inner extension rod (130).

2. The small-diameter stainless steel pipe internal welding device according to claim 1, characterized in that: The front support assembly (150) includes a front sleeve (151) and an inner support sleeve (152). The inner support sleeve (152) is installed inside the front sleeve (151) by a bearing. The inner support sleeve (152) has an inner transverse groove (153) corresponding to the inner extension rod (130). The outer wall of the front support assembly (150) is fixed with a side support rod (154). The inner support rod (155) is threaded inside the side support rod (154). The outer end of the inner support rod (155) is provided with a universal wheel (156). The inner end of the universal wheel (156) is threaded and installed on the outer end of the inner support rod (155). The outer wall of the inner support rod (155) is threaded with a limiting nut (157). The limiting nut (157) is located at the outer end of the side support rod (154).

3. The small-diameter stainless steel pipe internal welding device according to claim 2, characterized in that: The three sets of side support rods (154) are evenly distributed on the outer wall of the front sleeve (151). The front support assembly (150) and the rear support assembly (160) are also set up. The rear support assembly (160) is fixed with a rear upper plate (161) at the top. An upper screw rod (162) is inserted through the interior of the rear upper plate (161). The front upper plate (163) is fixed at the front end of the upper screw rod (162). The front upper plate (163) is supported on the top of the front support assembly (150). A side screw rod (164) parallel to the upper screw rod (162) is fixed on the lower side of the front upper plate (163). The rear end of the side screw rod (164) is also inserted through the interior of the rear upper plate (161). The rear sides of the upper screw rod (162) and the side screw rod (164) are threaded with screw caps (165). The two sets of screw caps (165) are located on both sides of the rear upper plate (161).

4. The small-diameter stainless steel pipe internal welding device according to claim 1, characterized in that: The front support assembly (140) includes a front crossbeam (141), and a telescopic joint (142) is inserted and assembled inside the front side of the front crossbeam (141). A front hinge seat (143) is fixed below the front end of the telescopic joint (142), and a front hinge tongue (144) corresponding to the front hinge seat (143) is fixed at the tail end of the small laser welding gun (100). The front hinge seat (143) and the front hinge tongue (144) are hinged by a screw pin (145), and fastening nuts (146) are threaded on both ends of the screw pin (145). An upper support beam (183) is supported on the top of the front crossbeam (141), and the front end of the upper support beam (183) is supported and assembled with the camera assembly (180). The front crossbeam (141) and the telescopic joint (142) have corresponding through slots for the fiber optic cable (110), and the upper support beam (183) has a corresponding through slot for the data cable (181).

5. The small-diameter stainless steel pipe internal welding device according to claim 4, characterized in that: The rear end of the front crossbeam (141) is fixed with an inner insert rod (134), and the inner insert rod (134) is inserted and assembled at the front end of the inner extension rod (130). The front end of the inner extension rod (130) is provided with a corresponding inner slot (135). The front end of the inner extension rod (130) is threaded with a screw (136), and the inner end of the screw (136) abuts against the outer wall of the inner insert rod (134). The outer wall of the front end of the front crossbeam (141) is also threaded with a side pin (149), and the side pin (149) abuts against the outer wall of the telescopic joint (142). A washer (147) is filled between the front hinge seat (143) and the front hinge tongue (144), and the washer (147) is sleeved on the outer wall of the screw pin (145). The outer end of the screw pin (145) is fixed with an outer torsion block (148).

6. The internal welding device for small-diameter stainless steel pipes according to claim 1, characterized in that: The inner extension rod (130) has a central through hole (131) corresponding to the optical fiber cable (110) in the center, and an upper through hole (133) corresponding to the data line (181) is opened on the upper part of the inner extension rod (130). The bottom of the inner extension rod (130) has a lower through hole (132) corresponding to the solder wire (171), and a front guide nozzle (172) is integrally provided at the bottom front end of the inner extension rod (130).

7. The small-diameter stainless steel pipe internal welding device according to claim 1, characterized in that: The wire feeding assembly (170) also includes a wire winding spool (173), and the rear end of the solder wire (171) is wound and assembled inside the wire winding spool (173). An assembly shaft (174) is installed inside the wire winding spool (173) through a bearing, and a tray mounting frame (175) is supported at both ends of the assembly shaft (174). The tray mounting frame (175) is bolted to the outer wall of the rear end of the inner extension rod (130).

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