A welding process for a gas-liquid separator grid

Abstract

The application discloses a kind of gas-liquid separator net seat welding process, it is related to welding technical field, including the following steps: welding preparation, preloading before welding, flame brazing and unloading quality inspection.The application is positioned by setting automatic welding mechanism on mounting bracket, realizes that gas-liquid separator net seat is positioned on the body of gas-liquid separator, and the mesh structure on the gas-liquid separator net seat is welded protection, avoid automatic brazing process burn injury protruding gas-liquid separator net seat set;During the downstroke of lifting bottom plate, sliding plate is automatically placed in the body of gas-liquid separator, then by electromagnetic valve control gas source supplies protective nitrogen gas in the body of gas-liquid separator through gas supply protection cylinder and gas supply head, realize that the body of gas-liquid separator and gas-liquid separator net seat have been presented positioning state and automatically supply protective nitrogen gas, avoid gas-liquid separator net seat to be blown oblique, guarantee that the welding perpendicularity of gas-liquid separator net seat on the body of gas-liquid separator.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically to a welding process for a gas-liquid separator mesh seat. Background Technology

[0002] In the production and processing of gas-liquid separators in air conditioning refrigeration systems, the welding of the gas-liquid separator mesh seat at the pre-punched welding hole position of the gas-liquid separator body is currently mainly carried out by manual flame brazing. However, due to the special structure of the gas-liquid separator mesh seat, which is placed directly on the pre-punched welding hole of the gas-liquid separator body, there is a possibility of burning the protruding gas-liquid separator mesh seat during the continuous heating process of manual flame brazing, resulting in poor product quality. At the same time, since the gas supply head for supplying protective nitrogen needs to be manually placed and removed before and after welding, the gas-liquid separator mesh seat placed on the pre-punched welding hole is often blown at an angle before the weld is cured, making it difficult to ensure the welding perpendicularity of the gas-liquid separator mesh seat on the gas-liquid separator body. Summary of the Invention

[0003] The purpose of this invention is to provide a welding process for a gas-liquid separator mesh seat to solve the above-mentioned defects caused by the prior art.

[0004] A welding process for a gas-liquid separator mesh base includes the following steps:

[0005] S1: Pre-welding preparation: Clean the surface of the gas-liquid separator body and the gas-liquid separator screen base to be welded, remove oil and dirt, dry, remove rust and clean, and dry again.

[0006] S2: Pre-assembly before welding: Pre-assemble the gas-liquid separator body to be welded onto the flame brazing device, and place the gas-liquid separator mesh seat at the pre-punched welding hole position of the gas-liquid separator body;

[0007] S3: Flame brazing: The start and stop of protective nitrogen are controlled by a solenoid valve set in the flame brazing device with a time delay, and then the flame brazing device is used to complete the welding of the gas-liquid separator body and the gas-liquid separator mesh seat.

[0008] S4: Remove the gas-liquid separator after welding, and after cooling, inspect the appearance of the gas-liquid separator and the welding perpendicularity of the gas-liquid separator mesh seat at the pre-punched welding hole position of the gas-liquid separator body.

[0009] Preferably, a flame brazing apparatus includes a frame, a pre-positioning bar, and an automatic welding mechanism. The pre-positioning bar is mounted on the frame, and its side end abuts against the end of the gas-liquid separator body. Gas supply sources are provided at both the top and bottom of the frame. The automatic welding mechanism is mounted on the frame via a mounting bracket and is used to position and adjust the gas-liquid separator body with a pre-installed gas-liquid separator mesh seat, and to automatically start and stop the nitrogen supply channel. Simultaneously, it performs synchronous automatic welding on multiple sets of gas-liquid separator bodies and gas-liquid separator mesh seats.

[0010] Preferably, the protective adjustment mechanism includes cylinders, a positioning light plate, and an air supply protective cylinder. Two cylinders are symmetrically mounted on the mounting frame. Each cylinder's output end is equipped with a lifting seat, which is slidably mounted on the mounting frame. A connecting shaft is fixedly connected to the side end of the lifting seat. The air supply protective cylinder is slidably mounted on the mounting frame and connected to an air supply source via a solenoid valve. A rotating part is fixedly mounted at the lower part of the air supply protective cylinder, and the connecting shaft is movably mounted between the rotating part and the connecting shaft. A spring is fitted between the two sides of the rotating part. The positioning light plates are symmetrically arranged on both sides of the rotating part. The lower end of the lifting seat is fixedly connected to a lifting base plate. One side of the lifting base plate is hinged with a uniformly distributed connecting rod 1. The other end of the connecting rod 1 is hinged with a sliding plate. An air supply head is installed on the sliding plate and connected to the air supply source through a solenoid valve. The other side of the lifting base plate is hinged with a connecting rod 2. The other end of the connecting rod 2 is hinged with a welding gun. The side end of the rotating part is also rotatably set on the pre-positioning row through a light rod. The welding gun is limited and slidably set on the pre-positioning row.

[0011] Preferably, both the gas-liquid separator body and the gas-liquid separator mesh base are made of iron.

[0012] Preferably, the distance between the inner walls of the two positioning light plates matches the width of the two sides of the gas-liquid separator body.

[0013] Preferably, the gas supply head is aligned with the port of the gas-liquid separator body in the horizontal direction.

[0014] Preferably, the welding torch is positioned horizontally to mate with the welding points of the gas-liquid separator body and the gas-liquid separator mesh base.

[0015] Preferably, the lower end of the gas supply protective cylinder is vertically aligned with the gas-liquid separator mesh base.

[0016] The advantages of this invention are as follows: by setting an automatic welding mechanism on the mounting frame, the output end of the cylinder drives the lifting seat to move downward, and the side and bottom ends of the lifting seat drive the connecting shaft and the lifting base plate to move downward synchronously. The inner walls of the positioning light plates on both sides of the sliding plate first contact the two sides of the gas-liquid separator body in the width direction. With the help of the pre-positioning row, the positioning of the gas-liquid separator body is completed. The lower port of the gas supply protective cylinder is buffered and closed on the gas-liquid separator mesh seat directly below. In this way, the gas-liquid separator mesh seat is positioned on the gas-liquid separator body and the mesh structure on the gas-liquid separator mesh seat is welded and protected, avoiding the automatic brazing process from burning the protruding gas-liquid separator mesh seat.

[0017] During the descent of the lifting base plate, one side of it will drive the air supply head to slide towards the side closer to the gas-liquid separator body via connecting rod one and sliding plate. Then, the sliding plate will automatically be placed inside the gas-liquid separator body. Then, the solenoid valve controls the air supply source to supply protective nitrogen into the gas-liquid separator body through the air supply protective cylinder and air supply head. This realizes the automatic supply of protective nitrogen to the gas-liquid separator body and gas-liquid separator mesh seat, which have already reached the positioning state, to prevent the gas-liquid separator mesh seat from being blown tilted and to ensure the welding verticality of the gas-liquid separator mesh seat on the gas-liquid separator body. Attached Figure Description

[0018] Figure 1 This is a flowchart of the present invention.

[0019] Figure 2 This is a schematic diagram of the flame brazing device in this invention.

[0020] Figure 3 This is a schematic diagram of the automatic welding mechanism inside the flame brazing device of the present invention.

[0021] Figure 4 This is a schematic diagram of the automatic welding mechanism inside the flame brazing device of the present invention from another perspective.

[0022] Figure 5 This is an assembly diagram of some structures in this invention.

[0023] Among them, 1-gas-liquid separator body; 2-gas-liquid separator mesh base; 3-frame; 4-pre-positioning row; 5-automatic welding mechanism; 6-gas supply source; 7-mounting bracket; 501-cylinder; 502-positioning plate; 503-gas supply protective cylinder; 504-lifting seat; 505-connecting shaft; 506-rotating part; 507-spring; 508-lifting base plate; 509-connecting rod one; 510-sliding plate; 511-gas supply head; 512-connecting rod two; 513-welding torch; 514-polish rod. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 5 As shown, a welding process for a gas-liquid separator mesh base includes the following steps:

[0026] S1: Pre-welding preparation: Clean the surfaces of the gas-liquid separator body 1 and the gas-liquid separator screen base 2 to remove oil and dirt, dry them, clean them to remove rust, and dry them again.

[0027] S2: Pre-assembly before welding: Pre-assemble the gas-liquid separator body 1 to be welded onto the flame brazing device, and place the gas-liquid separator mesh seat 2 at the pre-punched welding hole position of the gas-liquid separator body 1.

[0028] S3: Flame brazing: The start and stop of protective nitrogen are controlled by a solenoid valve set in the flame brazing device with a time delay, and the flame brazing device is used to complete the welding of the gas-liquid separator body 1 and the gas-liquid separator mesh seat 2.

[0029] S4: Unloading quality inspection: After the gas-liquid separator is welded, it is cooled down and the appearance of the gas-liquid separator is inspected, as well as the welding verticality of the gas-liquid separator mesh seat 2 at the pre-punched welding hole position of the gas-liquid separator body 1.

[0030] In this embodiment, a flame brazing device includes a frame 3, a pre-positioning row 4, and an automatic welding mechanism 5. The pre-positioning row 4 is installed on the frame 3, and the side end of the pre-positioning row 4 abuts against the end of the gas-liquid separator body 1. Gas supply sources 6 are provided at both the top and bottom of the frame 3. The automatic welding mechanism 5 is installed on the frame 3 through a mounting bracket 7 and is used to position and adjust the gas-liquid separator body 1 with pre-installed gas-liquid separator mesh seat 2 and to automatically start and stop the nitrogen supply channel. At the same time, it performs synchronous automatic welding on multiple sets of gas-liquid separator bodies 1 and gas-liquid separator mesh seats 2.

[0031] In this embodiment, the protective adjustment mechanism includes cylinders 501, a positioning light plate 502, and an air supply protective cylinder 503. Two cylinders 501 are symmetrically mounted on the mounting frame 7. Each cylinder 501 has a lifting seat 504 mounted on its output end. The lifting seat 504 is slidably mounted on the mounting frame 7, and a connecting shaft 505 is fixedly connected to the side end of the lifting seat 504. The air supply protective cylinder 503 is slidably mounted on the mounting frame 7 and connected to the air supply source 6 via a solenoid valve. A rotating part 506 is fixedly mounted on the lower part of the air supply protective cylinder 503, and the connecting shaft 505 is movably mounted between the rotating parts 506. The air supply protective cylinder 503 is connected to the rotating part 506 and the connecting shaft 505. A spring 507 is sleeved between the two parts. The positioning light plate 502 is symmetrically arranged on both sides of the rotating part 506. The lower end of the lifting seat 504 is fixedly connected to the lifting base plate 508. One side of the lifting base plate 508 is hinged to a uniformly distributed connecting rod 509. The other end of the connecting rod 509 is hinged to a sliding plate 510. An air supply head 511 is installed on the sliding plate 510 and connected to the air supply source 6 through a solenoid valve. The other side of the lifting base plate 508 is hinged to a connecting rod 512. The other end of the connecting rod 512 is hinged to a welding torch 513. The side end of the rotating part 506 is also rotatably set on the pre-positioning row 4 through the light rod 514. The welding torch 513 is limited and slidably set on the pre-positioning row 4.

[0032] It should be noted that the projection of the top of the prepositioning row 4 in the horizontal direction is placed below the welding torch 513. That is, the prepositioning row 4 only serves to preposition the end of the gas-liquid separator body 1 and will not affect the welding of the gas-liquid separator body 1 and the gas-liquid separator mesh seat 2 by the welding torch 513.

[0033] In this embodiment, both the gas-liquid separator body 1 and the gas-liquid separator mesh base 2 are made of iron.

[0034] In this embodiment, the distance between the inner walls of the two positioning light plates 502 is matched with the width of both sides of the gas-liquid separator body 1, the gas supply head 511 is matched with the port of the gas-liquid separator body 1 in the horizontal direction, and the welding torch 513 is matched with the welding joint of the gas-liquid separator body 1 and the gas-liquid separator mesh seat 2 in the horizontal direction.

[0035] In addition, the lower end of the gas supply protective cylinder 503 is vertically matched with the gas-liquid separator mesh seat 2.

[0036] Working process and principle: During use, this invention sequentially performs pre-welding preparation, pre-welding assembly, flame brazing, and unloading quality inspection. For the welding device in the flame brazing process, firstly, according to the model of the gas-liquid separator body 1 and gas-liquid separator mesh seat 2 to be welded, the matching positioning plate 502 and gas supply protective cylinder 503 are installed. After installation, the gas-liquid separator bodies 1 with the gas-liquid separator mesh seat 2 are manually placed one by one on the frame 3, and the curved tops of multiple gas-liquid separator bodies 1 are sequentially abutted against the pre-positioned row 4. Then, the cylinder 501 is activated so that its output end drives the lifting seat 504 downward. The side and bottom ends of 4 drive the connecting shaft 505 and the lifting base plate 508 to move down synchronously. The connecting shaft 505 drives the gas supply protective cylinder 503 to move down and also drives the rotating part 506 to rotate synchronously. The inner walls of the positioning light plates 502 on both sides of the rotating part 506 first contact the two sides in the width direction of the gas-liquid separator body 1, and then complete the positioning of the gas-liquid separator body 1. Then, under the elastic action of the spring 507, the lower end of the gas supply protective cylinder 503 is buffered and closed on the gas-liquid separator mesh seat 2 directly below, thereby realizing the positioning of the gas-liquid separator mesh seat 2 on the gas-liquid separator body 1 and welding protection on the mesh structure of the gas-liquid separator mesh seat 2.

[0037] During the descent of the lifting base plate 508, one side of it will drive the air supply head 511 to slide towards the side closer to the gas-liquid separator body 1 via the connecting rod 509 and the sliding plate 510. Then, the sliding plate 510 will be automatically placed inside the gas-liquid separator body 1. The solenoid valve will control the air supply source 6 to supply protective nitrogen gas into the gas-liquid separator body 1 through the air supply protective cylinder 503 and the air supply head 511. At the same time, the other side of the lifting base plate 508 will also drive the welding torch 513 to be automatically placed at the welding position of the gas-liquid separator body 1 and the gas-liquid separator mesh seat 2 via the connecting rod 512, thereby completing the automatic welding of the gas-liquid separator body 1 and the gas-liquid separator mesh seat 2.

[0038] After welding is completed, the above operation is performed in reverse. Under the elastic recovery action of spring 507, the positioning plate 502 is disengaged from the positioning of the welded product, and the gas supply head 511 and welding gun 513 are automatically separated.

[0039] Based on the above, the present invention provides an automatic welding mechanism 5 on the mounting frame 7. The output end of the cylinder 501 drives the lifting seat 504 to descend. The side and bottom ends of the lifting seat 504 drive the connecting shaft 505 and the lifting base plate 508 to descend synchronously. The inner walls of the positioning light plates 502 on both sides of the rotating part 506 first contact the two sides of the gas-liquid separator body 1 in the width direction. With the help of the pre-positioning row 4, the positioning of the gas-liquid separator body 1 is completed. The lower port of the gas supply protective cylinder 503 is buffered and covered on the gas-liquid separator mesh seat 2 directly below. This realizes the positioning of the gas-liquid separator mesh seat 2 on the gas-liquid separator body 1 and performs welding protection on the mesh structure on the gas-liquid separator mesh seat 2, avoiding the automatic brazing process from burning the protruding gas-liquid separator mesh seat.

[0040] During the descent of the lifting base plate 508, one side of it will drive the air supply head 511 to slide towards the side closer to the gas-liquid separator body 1 via the connecting rod 509 and the sliding plate 510. This will cause the sliding plate 510 to be automatically placed inside the gas-liquid separator body 1. Then, the solenoid valve controls the air supply source 6 to supply protective nitrogen gas into the gas-liquid separator body 1 through the air supply protective cylinder 503 and the air supply head 511. This will automatically supply protective nitrogen gas to the gas-liquid separator body 1 and the gas-liquid separator mesh seat 2, which are already in the positioning state, to prevent the gas-liquid separator mesh seat 2 from being blown tilted and to ensure the welding verticality of the gas-liquid separator mesh seat 2 on the gas-liquid separator body 1.

[0041] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A welding process for a gas-liquid separator mesh base, characterized in that: Includes the following steps: S1: Pre-welding preparation: Clean the surface of the gas-liquid separator body (1) and the gas-liquid separator mesh seat (2) to be welded, remove oil stains, dry, remove rust, and dry again; S2: Pre-assembly before welding: Pre-assemble the gas-liquid separator body (1) to be welded onto the flame brazing device, and place the gas-liquid separator mesh seat (2) at the pre-punched welding hole position of the gas-liquid separator body (1). S3: Flame brazing: The start and stop of protective nitrogen gas is controlled by the solenoid valve set in the flame brazing device with a delay, and then the flame brazing device is used to complete the welding of the gas-liquid separator body (1) and the gas-liquid separator mesh seat (2). S4: Unloading quality inspection: Remove the gas-liquid separator after welding, cool it down and inspect the appearance of the gas-liquid separator, as well as the welding verticality of the gas-liquid separator mesh seat (2) at the pre-punched welding hole position of the gas-liquid separator body (1). The flame brazing device includes a frame (3), a pre-positioning row (4), and an automatic welding mechanism (5). The pre-positioning row (4) is installed on the frame (3), and the side end of the pre-positioning row (4) abuts against the end of the gas-liquid separator body (1). Gas supply sources (6) are provided at both the top and bottom of the frame (3). The automatic welding mechanism (5) is installed on the frame (3) through a mounting bracket (7) and is used to position and adjust the gas-liquid separator body (1) with the pre-installed gas-liquid separator mesh seat (2) and to automatically start and stop the nitrogen supply channel. At the same time, it performs synchronous automatic welding on multiple gas-liquid separator bodies (1) and gas-liquid separator mesh seats (2). The automatic welding mechanism includes cylinders (501), a positioning plate (502), and a gas supply protective cylinder (503). There are two cylinders (501) symmetrically mounted on the mounting frame (7). The output ends of the two cylinders (501) are equipped with lifting seats (504). The lifting seats (504) are slidably mounted on the mounting frame (7). A connecting shaft (505) is fixedly connected to the side end of the lifting seats (504). The gas supply protective cylinder (503) is slidably mounted on the mounting frame (7) and connected to the gas supply source (6) through a solenoid valve. A rotating part (506) is fixedly mounted on the lower part of the gas supply protective cylinder (503). The connecting shaft (505) is movably mounted between the rotating part (506). A sleeve is fitted on the gas supply protective cylinder (503) between the rotating part (506) and the connecting shaft (505). A spring (507) is provided. The positioning light plate (502) is symmetrically arranged on both sides of the rotating part (506). The lower end of the lifting seat (504) is fixedly connected to the lifting base plate (508). One side of the lifting base plate (508) is hinged with a uniformly distributed connecting rod (509). The other end of the connecting rod (509) is hinged with a sliding plate (510). An air supply head (511) is installed on the sliding plate (510) and connected to the air supply source (6) through a solenoid valve. The other side of the lifting base plate (508) is hinged with a connecting rod (512). The other end of the connecting rod (512) is hinged with a welding gun (513). The side end of the rotating part (506) is also rotatably arranged on the pre-positioning row (4) through the light rod (514). The welding gun (513) is limited and slidably arranged on the pre-positioning row (4).

2. The welding process for a gas-liquid separator mesh base according to claim 1, characterized in that: Both the gas-liquid separator body (1) and the gas-liquid separator mesh base (2) are made of iron.

3. The welding process for a gas-liquid separator mesh base according to claim 1, characterized in that: The distance between the inner walls of the two positioning light plates (502) matches the width of the two sides of the gas-liquid separator body (1).

4. The welding process for a gas-liquid separator mesh base according to claim 1, characterized in that: The gas supply head (511) is matched with the port of the gas-liquid separator body (1) in the horizontal direction.

5. The welding process for a gas-liquid separator mesh base according to claim 1, characterized in that: The welding torch (513) is engaged with the gas-liquid separator body (1) and the gas-liquid separator mesh seat (2) in the horizontal direction.

6. The welding process for a gas-liquid separator mesh base according to claim 1, characterized in that: The lower end of the gas supply protective cylinder (503) is vertically matched with the gas-liquid separator mesh seat (2).

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