Welding machine with moving carriage

Abstract

This utility model discloses a welding machine with a movable frame, relating to the field of refrigeration equipment manufacturing technology. The utility model includes a worktable, movable slots, fixed blocks, and a support compartment. Movable slots are provided at the two long edges of the top of the worktable, and fixed plates are provided on the opposite sides of the two movable slots. Each fixed plate has a threaded positioning screw connected through it. A fixed block is fixed to one end of each movable slot. A rotating arm is rotatably connected to the bottom of the worktable, and a support compartment is fixed to the top of the rotating arm at the edge away from the worktable. A movable compartment is movably connected within the support compartment, and a rotating block is rotatably connected to the top of the movable compartment. A movable rod is movably connected within the rotating block. This utility model, by setting up a worktable, movable slots, fixed blocks, and a support compartment, solves the problems of insufficient stability of the weld ring position when welding evaporators or condensers, and the impact on welding quality caused by operator fatigue when holding the welding head.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration equipment manufacturing technology, and in particular relates to a welding machine with a movable frame. Background Technology

[0002] The welding quality of refrigeration equipment piping is crucial, directly affecting the equipment's sealing and lifespan. Currently, mainstream welding machines are divided into two types: oxy-acetylene welding and liquefied gas-air welding. Oxy-acetylene welding has high temperatures and strong versatility, capable of welding various copper and steel pipes, making it the preferred choice in professional engineering fields. However, its equipment is complex, dangerous, and expensive. Conversely, liquefied gas-air welding offers significant advantages in safety, portability, and economy, making it particularly suitable for repairing small copper pipes in household air conditioners and refrigerators. However, its disadvantage is a lower flame temperature, limiting its applicability. Furthermore, refrigeration equipment piping welding machines still have the following drawbacks in practical use: In order to improve welding efficiency, welding machines often place the evaporator or condenser flat or install it inside the refrigeration equipment before welding. During the welding process, the weld ring is prone to shifting from the welding position. After heating, it takes longer to complete the welding, which affects the welding quality and efficiency. Secondly, the welding machine requires the operator to hold it by hand during operation. As the working time increases, the operator's physical strength decreases, which can cause deviations when the welding head is aligned with the welding position of the evaporator and condenser. In addition, the stability of the operation decreases, affecting the welding quality. Utility Model Content

[0003] The purpose of this utility model is to provide a welding machine with a movable frame. By setting up a worktable, movable slot, fixed block and support chamber, it solves the problems of insufficient stability of the welding ring position when welding evaporators or condensers, and the impact on welding quality when the operator's physical strength decreases.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a welding machine with a movable frame, comprising a worktable, movable slots, fixed blocks, and a support chamber. Movable slots are provided at the two long edges of the top of the worktable. Fixed plates are provided on the opposite sides of the two movable slots, and the two fixed plates are fixedly mounted on both sides of the worktable. Each fixed plate has a threaded positioning screw connected through it. The ends of the two positioning screws that are close to each other are rotatably connected to the two movable slots. A fixed block is fixed to one end of each movable slot. A rotating arm is rotatably connected to the bottom of the worktable. A support chamber is fixed to the top edge of the rotating arm, away from the worktable. A movable chamber is movably connected within the support chamber. A rotating block is rotatably connected to the top of the movable chamber. A movable rod is movably connected within the rotating block. A mixing chamber is fixed to one end of the movable rod. Movable slots are provided on both sides of the top of the worktable. The distance between the movable slots is adjusted by the fixed plates and positioning screws to accommodate evaporators or condensers of different thicknesses. The fixed block is located at one end for positioning. The rotating arm connects the worktable and the support chamber. The movable chamber within the support chamber adjusts the position of the mixing chamber through the rotating block and the movable rod, achieving welding positioning.

[0005] Furthermore, a belt conveyor is embedded in the top of the workbench, and the top of the belt conveyor protrudes from the top of the workbench. Support columns are fixed at the four corners of the bottom of the workbench. The belt conveyor built into the workbench is used to transport workpieces, and the bottom support columns provide stable support.

[0006] Furthermore, several vertically arranged, equally spaced limiting rollers are rotatably connected inside the movable groove. A rotating frame is fixed to the end of the positioning screw away from the movable groove. The limiting rollers inside the movable groove assist the movement of the workpiece, and the rotating frame drives the positioning screw to rotate in order to adjust the position of the movable groove.

[0007] Furthermore, an electric push rod is fixed to one side of the fixed block. The telescopic end of the electric push rod passes through the fixed block and a U-shaped frame is fixed to the telescopic end of the electric push rod. The U-shaped frame is movably connected inside the fixed block. The electric push rod on the fixed block drives the U-shaped frame to move, thereby positioning and blocking the workpiece conveyed to the worktable.

[0008] Furthermore, the top of the support chamber is open and the bottom is closed, while the top of the movable chamber is closed and the bottom is open. An electric push rod two is fixed at the bottom inside the support chamber, and the telescopic end of the electric push rod two is fixed to the inner top of the movable chamber. A knob bolt is threadedly connected to the upper inner part of the rotating block, and the bottom end of the knob bolt abuts against the movable rod. The electric push rod two inside the support chamber controls the lifting and lowering of the movable chamber, and the knob bolt is used to lock the position of the movable rod in the rotating block to ensure the stability of the welding nozzle.

[0009] Furthermore, a nozzle is fixedly connected to the side of the mixing chamber away from the movable rod, and switching valves are fixedly connected to both sides of the mixing chamber. The mixing chamber is connected to the nozzle and the two switching valves, which respectively introduce gaseous fuel and oxygen. After mixing, the mixture is ignited to generate a flame, which is used to melt the welding ring to complete the brazing.

[0010] This utility model has the following beneficial effects: This invention solves the problem of insufficient stability of the welding ring position when welding evaporators or condensers by setting up a worktable, movable groove, and fixed block. When welding evaporators or condensers of different thicknesses, rotating two rotating frames drives two positioning screws to rotate. The positioning screws are threadedly connected to the fixed plate and rotated to the movable groove, which moves the movable groove toward the belt conveyor until the distance between the limit rollers in the two movable grooves is equal to the thickness of the evaporator or condenser. At this point, the work can begin. This allows the evaporator or condenser to be set vertically when welding evaporators or condensers, resulting in higher stability of the welding ring position.

[0011] This invention solves the problem of welding quality being affected by the operator's fatigue when holding the welding head, by setting up a workbench and support chamber. After the evaporator or condenser is positioned, the position of the evaporator or condenser to be welded can be determined. Then, the movable rod is rotated, the knob bolt is loosened, the rotating arm and movable rod are rotated, and the electric push rod is activated until the nozzle is aligned with the condenser or evaporator. Then, the knob bolt is tightened, and the welding ring is placed around the circumference of the smaller diameter pipe. The pipe to be welded can then be inserted into the pipe that has been flared into a trumpet shape. After the welding ring is set at the corresponding trumpet position of the pipe, the movable rod is rotated until the flame on the nozzle burns the corresponding position of the evaporator or condenser pipe, allowing the welding ring to passively melt and enter between the two pipes to be welded. Then, the movable rod is pushed to complete the welding operation. This allows the operator to operate the welding machine without holding the welding head, reducing the impact on the operator's physical strength and ensuring welding quality. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A perspective view of a welding machine assembly structure with a movable frame; Figure 2 A three-dimensional structural diagram of the workbench; Figure 3 This is a three-dimensional structural diagram of the movable groove; Figure 4 This is a three-dimensional structural diagram of the fixed block; Figure 5 This is a three-dimensional structural diagram of the support warehouse.

[0014] Figure label: 1. Workbench; 101. Belt conveyor; 102. Support column; 2. Movable trough; 201. Limit roller; 202. Fixed plate; 203. Positioning screw; 204. Rotating frame; 3. Fixed block; 301. Electric push rod one; 302. U-shaped frame; 4. Support bin; 401. Rotating arm; 402. Movable bin; 403. Electric push rod two; 404. Rotating block; 405. Movable rod; 406. Knob bolt; 407. Mixing bin; 408. Switch valve; 409. Nozzle. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0016] Please see Figure 1-4This utility model relates to a welding machine with a movable frame, comprising a worktable 1, movable slots 2, fixed blocks 3, and a support chamber 4. Movable slots 2 are provided at the two long edges of the top of the worktable 1. During operation, the evaporator or condenser to be welded is vertically conveyed on the worktable 1. The movable slots 2 restrict the vertical transport of the evaporator or condenser on the top of the worktable 1. Fixed plates 202 are provided on the opposite sides of the two movable slots 2, with positioning screws 203 threadedly connected to them. The two fixed plates 202 are fixedly positioned on both sides of the worktable 1, positioning the movable slots 2 at the top of the worktable 1. Each fixed plate 202 has a through-threaded positioning screw 203. The ends of the two positioning screws 203 that are close to each other are rotatably connected to the two movable slots 2, with the positioning screws 203 threadedly connected to the fixed plates 202. When the positioning screws 203 rotate, the position of the movable slot 2 on the worktable 1 is adjusted. A fixed block 3 is fixed to one end of each movable slot 2. The evaporator or condenser is positioned on the workbench 1. A rotating arm 401 is rotatably connected to the bottom of the workbench 1. As the rotating arm 401 rotates, it changes the position of the support chamber 4 on the workbench 1. The support chamber 4 is fixed at the top of the rotating arm 401 away from the edge of the workbench 1. A movable chamber 402 is movably connected inside the support chamber 4. The movement between the support chamber 4 and the movable chamber 402 drives the nozzle 409 to spray the flame. A rotating block 404 is rotatably connected to the top of the movable chamber 402. The movable rod 405 is connected to the rotating block 404. When the rotating block 404 rotates, it drives the movable rod 405 to change its position above the worktable 1. The movable rod 405 moves within the rotating block 404 to adjust the position of the flame emitted by the nozzle 409. One end of the movable rod 405 is fixed to a mixing chamber 407. Oxygen and gaseous fuel are mixed in the mixing chamber 407 and ignited after being sprayed out through the nozzle 409. This heats the flared end of the pipe to be welded in the evaporator or condenser, causing the welding ring (ring weld) to melt and braze.

[0017] Specifically, a belt conveyor 101 is embedded in the top of the workbench 1, and the top of the belt conveyor 101 protrudes from the top of the workbench 1. Support columns 102 are fixed at the four corners of the bottom of the workbench 1. The workbench 1 transports the evaporator or condenser to be welded through the belt conveyor 101, and the support columns 102 support the workbench 1 on the working plane.

[0018] Furthermore, several vertically arranged, equally spaced limiting rollers 201 are rotatably connected inside the movable groove 2. A rotating frame 204 is fixed at the end of the positioning screw 203 away from the movable groove 2. The movable groove 2 transports the evaporator and condenser in cooperation with the limiting rollers 201. Rotating the rotating frame 204 drives the positioning screw 203 to rotate.

[0019] Furthermore, an electric push rod 301 is fixed to one side of the fixed block 3. The telescopic end of the electric push rod 301 passes through the fixed block 3 and a U-shaped frame 302 is fixed to the telescopic end of the electric push rod 301. The U-shaped frame 302 is movably connected inside the fixed block 3. The fixed block 3 drives the U-shaped frame 302 to move through the electric push rod 301, so that the U-shaped frame 302 limits the evaporator or condenser conveyed on the workbench 1.

[0020] The operation process of this embodiment is as follows: During operation, when welding evaporators or condensers of different thicknesses, the two rotating frames 204 are rotated, which drives the two positioning screws 203 to rotate. The positioning screws 203 are threadedly connected to the fixed plate 202 and rotatedly connected to the movable groove 2, which drives the movable groove 2 to move towards the belt conveyor 101. When the distance between the limiting rollers 201 in the two movable grooves 2 is equal to the thickness of the evaporator or condenser, the operation can begin. The belt conveyor 101 is started, and the evaporator or condenser is transported from the end of the worktable 1 away from the fixed block 3 to the top of the worktable 1 between the two movable grooves 2. At the same time, the electric push rod 301 is started, which drives the U-shaped frame 302 to move. When the U-shaped frame 302 moves to the position where the condenser or evaporator is blocked, the operation of the belt conveyor 101 is turned off, and the welding operation can be prepared. After welding, the electric push rod 301 is started to reset, and the belt conveyor 101 is started again to transport the welded condenser and evaporator to the subsequent production equipment. Specific Implementation Example 2

[0021] Please see Figure 1 , 2 5. Based on the specific embodiment one, the top of the support chamber 4 is open and the bottom is closed, and the top of the movable chamber 402 is closed and the bottom is open. An electric push rod 403 is fixed at the bottom inside the support chamber 4. The telescopic end of the electric push rod 403 is fixed to the inner top of the movable chamber 402. A knob bolt 406 is threadedly connected to the upper inner part of the rotating block 404. The bottom end of the knob bolt 406 abuts against the movable rod 405. When the electric push rod 403 is working, it drives the movable chamber 402 to rise and fall. The movement of the movable chamber 402 changes the rise and fall of the movable rod 405. The knob bolt 406 is screwed into the rotating block 404 and abuts against the movable rod 405, thus limiting the position of the movable rod 405 in the rotating block 404.

[0022] Specifically, a nozzle 409 is fixedly connected to the side of the mixing chamber 407 away from the movable rod 405, and two switching valves 408 are fixedly connected to both sides of the mixing chamber 407. The ends of the two switching valves 408 away from the mixing chamber 407 are respectively connected to pipes for conveying welding gaseous fuel and combustion oxygen. After the two switching valves 408 are opened, the welding gaseous fuel and combustion oxygen are delivered into the mixing chamber 407, mixed, and then sprayed out through the nozzle 409 and ignited, in preparation for the welding operation of the evaporator or condenser.

[0023] The operation process of this embodiment is as follows: After the evaporator or condenser is positioned, the position of the evaporator or condenser to be welded can be determined. Then, rotate the movable rod 405, loosen the knob bolt 406, rotate the rotating arm 401 and the movable rod 405, and then start the electric push rod 403 until the nozzle 409 is aligned with the condenser or evaporator. Then, tighten the knob bolt 406 and put the welding ring on the circumference of the smaller diameter pipe. Then, insert the pipe to be welded into the pipe that has been flared into a bell mouth. After the welding ring is set at the corresponding bell mouth position of the pipe, rotate the movable rod 405 until the flame on the nozzle 409 burns the corresponding position of the evaporator or condenser pipe, so that the welding ring is passively melted into the space between the two pipes to be welded. Then, push the movable rod 405 to complete the welding operation. Then, after the condenser or evaporator is welded, start the next welding cycle.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A welding machine with a movable frame, comprising a worktable (1), a movable slot (2), a fixed block (3), and a support chamber (4), characterized in that: The workbench (1) has two long edges at the top of each of the two movable slots (2). The two movable slots (2) are respectively fixed on the opposite sides of each other. The two fixed plates (202) are respectively fixed on both sides of the workbench (1). Each fixed plate (202) is threaded with a positioning screw (203). The two positioning screws (203) are respectively rotatably connected to the two movable slots (2) at their close ends. One end of each movable slot (2) is fixed with a fixing block (3). The bottom of the workbench (1) is rotatably connected with a rotating arm (401). The top of the rotating arm (401) is fixed with a support chamber (4) at the edge away from the workbench (1). The support chamber (4) is movably connected with a movable chamber (402). The top of the movable chamber (402) is rotatably connected with a rotating block (404). The rotating block (404) is movably connected with a movable rod (405). One end of the movable rod (405) is fixed with a mixing chamber (407).

2. The welding machine with a movable frame according to claim 1, characterized in that: A belt conveyor (101) is embedded in the top of the workbench (1), and the top of the belt conveyor (101) protrudes from the top of the workbench (1). Support columns (102) are fixed at the four corners of the bottom of the workbench (1).

3. The welding machine with a moving stand according to claim 1, characterized in that: The movable groove (2) is rotatably connected to several vertically spaced limiting rollers (201), and the end of the positioning screw (203) away from the movable groove (2) is fixed with a rotating frame (204).

4. The welding machine with a moving stand according to claim 1, characterized in that: An electric push rod (301) is fixed on one side of the fixed block (3). The telescopic end of the electric push rod (301) passes through the fixed block (3) and a U-shaped frame (302) is fixed to the telescopic end of the electric push rod (301). The U-shaped frame (302) is movably connected inside the fixed block (3).

5. A welding machine with a movable frame according to claim 1, characterized in that: The support chamber (4) has an open top and a closed bottom. The movable chamber (402) has a closed top and an open bottom. An electric push rod (403) is fixed at the bottom inside the support chamber (4). The telescopic end of the electric push rod (403) is fixed at the top inside the movable chamber (402). A knob bolt (406) is threadedly connected to the upper inner part of the rotating block (404). The bottom end of the knob bolt (406) abuts against the movable rod (405).

6. A welding machine with a movable frame according to claim 5, characterized in that: A nozzle (409) is fixedly connected to the side of the mixing chamber (407) away from the movable rod (405), and a switch valve (408) is fixedly connected to both sides of the mixing chamber (407).

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