Welding equipment for stainless steel composite pipe production

Abstract

The utility model discloses a welding device for stainless steel composite pipe production, which comprises an operation table, and two clamping mechanisms for pipe blank shaping and conveying are arranged on the operation table; a sealing cover is arranged between the two clamping mechanisms, the sealing cover is in sliding sealing fit with the pipe blank, a cavity used for containing the welding head is formed, and a purifying mechanism communicated with the cavity is arranged on the sealing cover. The sealing cover can prevent smoke generated during welding from escaping, and then the smoke is purified through the purifying mechanism, so that emission of harmful substances is reduced, and the green and environment-friendly performance of welding equipment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of welding technology, and in particular relates to a welding equipment for the production of stainless steel composite pipes. Background Technology

[0002] The production process of stainless steel composite pipes includes bending stainless steel plates into pipe blanks and welding the weld seams of the pipe blanks through a straight seam welding process to form stainless steel pipes.

[0003] Patent CN214024212U discloses a straight seam welding device. The welding fumes generated during the welding process are not treated to render them harmless. Direct emission of the welding fumes will pollute the atmospheric environment and affect air quality. Harmful substances such as heavy metals and particulate matter can endanger the health of welders and people around them, causing respiratory diseases, lung diseases and even cancer.

[0004] Therefore, it is necessary to improve the welding equipment in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects in the existing technology and provide a welding equipment for the production of stainless steel composite pipes, thereby improving the green and environmentally friendly performance of the welding equipment.

[0006] To achieve the above objectives, the specific technical solution of the welding equipment for the production of stainless steel composite pipes according to this utility model is as follows:

[0007] A welding device for producing stainless steel composite pipes includes an operating table with two clamping mechanisms for shaping and conveying pipe blanks. A sealing cover is provided between the two clamping mechanisms. The sealing cover slides and seals with the pipe blank to form a chamber for accommodating the welding head. A purification mechanism communicating with the chamber is provided on the sealing cover.

[0008] Preferably, the sealing cover is raised and lowered directly above the operating table and is powered by a lifting drive component, and the bottom of the sealing cover has an opening that matches the tube blank.

[0009] Preferably, a sealing ring is provided around the four sides of the opening in the circumferential direction.

[0010] Preferably, the sealing cover extends along the axial direction of the tube blank, and a translational force member is horizontally arranged on the inner top wall of the sealing cover along the axial direction perpendicular to the tube blank, and the welding head is arranged at the moving end of the translational force member.

[0011] Preferably, the purification mechanism includes a filter media box fixedly connected to the sealing cover. The front and rear ends of the sealing cover along the axial direction of the tube blank are respectively connected to the air inlet and air outlet of the filter media box through a circulation pipe, and an air pump is provided on one of the circulation pipes.

[0012] Preferably, the sealing cover is provided with an air inlet and a viewing window.

[0013] Preferably, the clamping mechanism includes two vertically distributed clamping rollers, which are respectively disposed on both sides of the tube blank, and the outer circumference of the clamping rollers is provided with a semi-circular shaping groove.

[0014] Preferably, the operating table is fixedly connected to a horizontally arranged guide rail, which extends along an axial direction perpendicular to the tube blank. The two clamping rollers are each powered by a translational drive and are slidably arranged on the guide rail.

[0015] Preferably, a top frame is provided between the top ends of the two clamping rollers.

[0016] Preferably, the top frame is parallel to the guide rail, the top frame has a plug hole and a waist-shaped groove, the waist-shaped groove is distributed along the extension direction of the top frame, the top frame is threaded with a bolt, and one end of the bolt extends into the waist-shaped groove.

[0017] The welding equipment for stainless steel composite pipe production of this utility model has the following advantages: the sealing cover can prevent the emission of fumes generated during welding, and then the fumes are purified by the purification mechanism, thereby reducing the emission of harmful substances and improving the green and environmentally friendly performance of the welding equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the connection structure between the welding equipment and the tube blank of this utility model;

[0019] Figure 2 This is a schematic diagram of the welding equipment of this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the sealing cover of this utility model;

[0022] Figure 5 This is a cross-sectional view of the sealing cover of this utility model;

[0023] Figure 6 This is a schematic diagram of the sealing ring of this utility model;

[0024] The markings in the diagram are as follows: 1. Tube blank; 2. Operating table; 3. Clamping mechanism; 4. Sealing cover; 5. Purification mechanism; 6. Lifting drive component; 7. Sealing ring; 8. Welding head; 301. Guide rail; 302. Translation drive component; 303. Bolt; 304. Waist-shaped groove; 305. Clamping roller; 306. Shaping groove; 307. Top frame; 308. Insertion hole; 401. Air inlet; 402. Viewing window; 501. Filter media box; 502. Air pump; 503. Circulation pipe; 801. Translation drive component. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0026] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the welding equipment and are only for the purpose of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figure 1 and 2 As shown, a welding equipment for producing stainless steel composite pipes includes an operating table 2. The operating table 2 is provided with two clamping mechanisms 3 for shaping and conveying the pipe blank 1. A sealing cover 4 is provided between the two clamping mechanisms 3. The sealing cover 4 slides and seals with the pipe blank 1 to form a chamber for accommodating the welding head 8. A purification mechanism 5 communicating with the chamber is provided on the sealing cover 4.

[0028] The above-mentioned welding equipment is suitable for straight seam welding of the weld seam of the stainless steel pipe after it is bent into a pipe blank 1. The clamping mechanism 3 clamps the pipe blank 1 from both sides to shape the pipe blank 1, so as to control the width and position of the weld seam. At the same time, it can also guide and position the pipe blank 1 during transportation. The sealing cover 4 covers the pipe blank 1 and covers the weld seam on the pipe blank 1 inside. The part of the sealing cover 4 in contact with the pipe blank 1 is in a sealed state, so that the pipe blank 1 and the sealing cover 4 form a relatively sealed cavity. During the transportation of the pipe blank 1, the weld seam passes through the cavity and is welded by the welding head 8. Harmful fumes generated during welding are confined inside the sealing cover 4. Air circulates within the sealing cover 4 and the purification mechanism 5, allowing the harmful fumes to be absorbed and purified by the filter material inside the purification mechanism 5. This effectively reduces the emission of harmful fumes and improves the green and environmentally friendly performance of the welding equipment. Furthermore, the cavity formed between the sealing cover 4 and the tube blank 1 can be filled with protective gas. The sealed cavity reduces the loss of protective gas and the entry of air, effectively protecting the welding area from harmful gases, improving welding quality, and reducing welding defects.

[0029] Further improvements include, for example Figure 1 As shown, the sealing cover 4 is positioned directly above the operating platform 2 and is powered by the lifting drive component 6. The bottom of the sealing cover 4 has an opening that matches the tube blank 1. Specifically, the lifting drive component 6 of the welding equipment includes a column fixedly connected to the operating platform 2, a tube sleeve fixedly connected to the sealing cover 4 (the column and tube sleeve are slidably connected), and a cylinder fixedly connected to the operating platform 2. The cylinder drives the sealing cover 4 to rise and fall. By raising and lowering the sealing cover 4, the connection and separation between the sealing cover 4 and the tube blank 1 can be realized, facilitating the replacement of the tube blank 1 and improving the ease of use of the welding equipment.

[0030] Further improvements include, for example Figure 4-6 As shown, sealing rings 7 are provided circumferentially around the four sides of the opening. The sealing rings 7 can be made of rubber. Rubber has good elasticity, wear resistance and corrosion resistance, can adapt to a certain degree of deformation and vibration, has good sealing performance and relatively low cost; thus, the sealing rings 7 can play a good sealing role between the sealing cover 4 and the tube blank 1, improve the sealing effect, and thus improve the green and environmentally friendly performance of the welding equipment.

[0031] Further improvements include, for example Figure 2 and 5As shown, the sealing cover 4 extends axially along the tube blank 1. A translational force member 801 is horizontally arranged on the inner top wall of the sealing cover 4 along an axis perpendicular to the tube blank 1. The welding head 8 is located at the moving end of the translational force member 801. The translational force member 801 includes a slide rod, a slider slidably mounted on the slide rod, and a motor and a lead screw for driving the slider to move. The welding head 8 is fixed on the slider, thereby driving the welding head 8 to move. This movement is used to adjust the position of the welding head 8 so that it can match the position of the weld seam on the tube blank 1, improving the welding effect of the welding equipment.

[0032] Further improvements include, for example Figure 4 As shown, the purification mechanism 5 includes a filter media box 501 fixedly connected to the sealing cover 4. The front and rear ends of the sealing cover 4 along the axial direction of the tube blank 1 are respectively connected to the air inlet and outlet of the filter media box 501 via a circulation pipe 503. An air pump 502 is installed on one of the circulation pipes 503. Specifically, in the above welding equipment, activated carbon filter media is placed inside the filter media box 501. Powered by the air pump 502, air circulates through the circulation pipe 503 within the sealing cover 4 and the filter media box 501, thereby absorbing harmful fumes through the activated carbon filter media, reducing the emission of harmful fumes, and improving the green environmental performance of the welding equipment. Along the forward direction of the tube blank 1, the welding head 8 is located at the front end of the sealing cover 4, allowing the weld to remain inside the sealing cover 4 for a longer time after welding. Since the sealing cover 4 is filled with protective gas, the weld can be cooled within the protective gas after welding. To prevent oxidation of the welded parts and improve welding quality, the sealing cover 4 extends along the forward direction of the pipe 1 and has sufficient length to allow the weld to remain inside the sealing cover 4 for a sufficient time after welding, so that it can be fully cooled. Furthermore, the cooling rate of the weld can be accelerated by the circulating gas, thereby improving the welding efficiency of the welding equipment. By circulating the gas between the sealing cover 4 and the filter box 501, the amount of external air entering can be reduced, as can the amount of shielding gas lost. This ensures the welding effect while reducing the loss of shielding gas and lowering the production cost of the welding equipment.

[0033] Further improvements include, for example Figure 1 and 4 As shown, the sealing cover 4 is provided with a gas inlet 401 and a viewing window 402. The gas inlet 401 is provided to periodically fill the sealing cover 4 with protective gas, thereby controlling the concentration of protective gas inside the sealing cover 4 and improving the welding effect of the welding equipment; while the viewing window 402 is a glass window, which allows the welding status inside the sealing cover 4 to be observed, improving the ease of use of the welding equipment.

[0034] Further improvements include, for example Figure 3As shown, the clamping mechanism 3 includes two vertically distributed clamping rollers 305, which are respectively disposed on both sides of the tube blank 1. A semi-circular shaping groove 306 is formed on the outer circumference of each clamping roller 305. The radius of the shaping groove 306 is the same as the radius of the tube blank 1, allowing the shaping groove 306 to apply pressure evenly to the tube blank 1 from all sides, maintaining good roundness and improving the quality of the welded tube.

[0035] Further improvements include, for example Figure 3 As shown, the operating table 2 is fixedly connected to a horizontally arranged guide rail 301, which extends along an axis perpendicular to the tube blank 1. Two clamping rollers 305 are each powered by a translation drive 302 and are slidably mounted on the guide rail 301. The translation drive 302 includes a sliding seat that slides with the guide rail 301, and a motor and a lead screw for driving the sliding seat to move. A fixed shaft is vertically arranged on the sliding seat, and the clamping rollers 305 are connected to the fixed shaft through bearings. By controlling the movement of the two clamping rollers 305 respectively, the positions of the two clamping rollers 305 can be adjusted respectively, so that the clamping rollers 305 can effectively clamp the tube blank 1, improve the stability of the positioning and conveying of the tube blank 1, and improve the welding effect of the welding equipment on the tube blank 1.

[0036] Further improvements include, for example Figure 3 As shown, a top frame 307 is provided between the top ends of the two clamping rollers 305. The top frame 307 is parallel to the guide rail 301. The top frame 307 has an insertion hole 308 and a waist-shaped groove 304. The waist-shaped groove 304 is distributed along the extension direction of the top frame 307. The top frame 307 is threadedly connected to a bolt 303, one end of which extends into the waist-shaped groove 304. The top beam 307 can position the top ends of the fixed shaft of the two clamping rollers 305, thereby improving the stability of the fixed shaft, which in turn improves the stability of the two clamping rollers 305, improves the stability of the clamping rollers 305 in clamping and positioning the tube blank 1, and further improves the welding effect of the tube blank 1.

[0037] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A welding device for producing stainless steel composite pipes, comprising an operating table (2), characterized in that: The operating table (2) is equipped with two clamping mechanisms (3) for shaping and conveying the tube blank (1); A sealing cover (4) is provided between the two clamping mechanisms (3). The sealing cover (4) is slidably sealed with the tube blank (1) and forms a chamber for accommodating the welding head (8). A purification mechanism (5) communicating with the chamber is provided on the sealing cover (4).

2. The welding equipment for producing stainless steel composite pipes according to claim 1, characterized in that, The sealing cover (4) is raised and lowered directly above the operating table (2) and powered by the lifting drive (6). The bottom of the sealing cover (4) has an opening that matches the tube blank (1).

3. The welding equipment for producing stainless steel composite pipes according to claim 2, characterized in that, A sealing ring (7) is provided around the four sides of the opening in the circumferential direction.

4. The welding equipment for producing stainless steel composite pipes according to claim 1, characterized in that, The sealing cover (4) extends along the axial direction of the tube blank (1), and the inner top wall of the sealing cover (4) is provided with a translational force member (801) horizontally along the axial direction perpendicular to the tube blank (1), and the welding head (8) is provided at the moving end of the translational force member (801).

5. The welding equipment for producing stainless steel composite pipes according to claim 4, characterized in that, The purification mechanism (5) includes a filter material box (501) fixedly connected to the sealing cover (4). The front and rear ends of the sealing cover (4) along the axial direction of the tube blank (1) are respectively connected to the air inlet and air outlet of the filter material box (501) through a circulation pipe (503). An air pump (502) is provided on one of the circulation pipes (503).

6. The welding equipment for producing stainless steel composite pipes according to claim 1, characterized in that, The sealing cover (4) is provided with an air inlet (401) and a viewing window (402).

7. The welding equipment for producing stainless steel composite pipes according to claim 1, characterized in that, The clamping mechanism (3) includes two vertically distributed clamping rollers (305), which are respectively disposed on both sides of the tube blank (1). The outer circumference of the clamping rollers (305) is provided with a semi-circular shaping groove (306).

8. The welding equipment for producing stainless steel composite pipes according to claim 7, characterized in that, The operating table (2) is fixedly connected to a horizontally arranged guide rail (301). The guide rail (301) extends along an axial direction perpendicular to the tube blank (1). The two clamping rollers (305) are powered by a translation drive (302) and are slidably arranged on the guide rail (301).

9. The welding equipment for producing stainless steel composite pipes according to claim 8, characterized in that, A top frame (307) is provided between the top ends of the two clamping rollers (305).

10. The welding equipment for producing stainless steel composite pipes according to claim 9, characterized in that, The top frame (307) is parallel to the guide rail (301). The top frame (307) has a plug hole (308) and a waist-shaped groove (304). The waist-shaped groove (304) is distributed along the extension direction of the top frame (307). The top frame (307) is threaded with a bolt (303). One end of the bolt (303) extends into the waist-shaped groove (304).

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