Metal door and window welding equipment

Abstract

The utility model belongs to welding equipment technical field especially relates to a kind of metal door and window welding equipment, it include: welding station, the upper end of welding station is equipped with conveying belt, the position of welding station upper end at conveying belt both sides is fixedly connected with side plate, and two the side plate between fixedly connected with fixed plate;Welding mechanism is used to carry out welding treatment to metal door and window with different welding speed, and the welding mechanism includes translation plate slidingly connected on the upper end of fixed plate along horizontal direction.This utility model sets up welding mechanism, in the welding process, translation plate and welding gun carry out reciprocating horizontal displacement, in this process, translation plate will drive sliding vane to slide on resistance rod back and forth, constantly adjust the resistance value of the circuit of direct current motor, make the speed of two inner arc tooth groove and two outer arc tooth groove rotate constantly change, constantly adjust the welding speed in the welding process, to realize the constant adjustment of heat input.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment technology, and in particular relates to a metal door and window welding equipment. Background Technology

[0002] Metal doors and windows are made of metal materials (such as steel, aluminum, and stainless steel). They are commonly used in buildings for doors, window frames, and related components. Due to their high strength, durability, and low maintenance requirements, they are widely used in modern architecture. During manufacturing, metal doors and windows typically consist of multiple metal components, such as window frames, door frames, and support frames. Therefore, these metal components are usually welded together to ensure the stability and durability of the entire structure. Arc welding is one of the most common welding methods. Its principle is to use an electric arc to generate high temperatures, causing the metal to melt at the weld joint, forming a weld joint. Then, through the flow and cooling solidification of the molten metal, a strong connection between the metal components is achieved.

[0003] Existing metal door and window welding equipment, such as the metal door and window welding equipment disclosed in Chinese announcement number CN221560220U, typically has the following technical problems during use: During the welding process, the same heat input is usually used to weld metal doors and windows, which leads to overheating in some areas, a large heat-affected zone, deformation of the weld joint and metal doors and windows, and reduced welding quality. Furthermore, during the welding process, gas may not be completely expelled or may be trapped in the weld, leading to air bubbles inside the weld, which weakens the weld's density and uniformity, affecting the overall strength and usability of metal doors and windows. Utility Model Content

[0004] The purpose of this invention is to address the problems mentioned in the background art by providing a metal door and window welding device that continuously adjusts the welding speed during the welding process to achieve continuous adjustment of heat input and avoid excessively high or low heat input.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A metal door and window welding device, comprising: A welding table, the upper end of which is equipped with a conveyor belt, and side plates are fixedly connected to both sides of the upper end of the welding table at the position of the conveyor belt, and a fixing plate is fixedly connected between the two side plates. A welding mechanism is used to weld metal doors and windows at different welding speeds. The welding mechanism includes a translation plate that is slidably connected to the upper end of a fixed plate in the horizontal direction. An extension column is fixedly connected to the lower end of the translation plate, and a welding gun is arranged below the extension column. A DC motor is fixedly connected to the upper end of the translation plate, and a drive rod is fixedly connected to the output end of the DC motor. Two inner arc-shaped toothed grooves and two outer arc-shaped toothed grooves are fixedly connected to the periphery of the drive rod. The two inner arc-shaped toothed grooves and two outer arc-shaped toothed grooves are staggered. A transmission rod is rotatably connected to the upper end of the translation plate, and a drive gear is fixedly connected to the transmission rod. The two inner arc-shaped toothed grooves and two outer arc-shaped toothed grooves alternately mesh with the drive gear. A transmission assembly for driving the translation plate to slide in the horizontal direction is provided at the upper end of the fixed plate.

[0006] Preferably, the transmission assembly includes a rack fixedly connected to the upper end of the fixed plate, a transmission gear fixedly connected to the transmission rod at a position below the transmission gear, the rack meshing with the transmission gear, a sliding rheostat fixedly connected to the lower end of the rack, and the DC motor connected in series with the power supply device through the sliding rheostat.

[0007] Preferably, the sliding rheostat includes a resistance rod fixedly connected to the lower end of the rack, and a slider fixedly connected to the resistance rod on the translation plate.

[0008] Preferably, a vibration mechanism is provided above the fixed plate to introduce vibration during welding to reduce the tension on the surface of the molten pool. The vibration mechanism includes an L-shaped rod installed above the translation plate, with a guide roller rotatably connected to the lower end of the L-shaped rod. A fixed block is fixedly connected to the side wall of the side plate, and a movable block is slidably connected to the side wall of the side plate in the vertical direction. A first spring is provided between the movable block and the fixed block. A guide plate is fixedly connected between two movable blocks. Multiple triangular guide blocks are linearly arrayed on the guide plate. The guide roller contacts and rolls with the multiple triangular guide blocks. A telescopic rod is provided between the extension column and the welding gun. The guide plate is fixedly connected to the side wall of the telescopic end of the telescopic rod.

[0009] Preferably, a strip-shaped limiting groove is provided on the side wall of the side plate, and the moving block is slidably connected to the inner wall of the strip-shaped limiting groove.

[0010] Preferably, the fixed plate is further provided with an adjustment mechanism for adjusting the vibration amplitude according to the welding speed. The adjustment mechanism includes a control block fixedly connected to the top of the drive rod. The peripheral sidewall of the control block is provided with a plurality of sliding grooves. A push rod is slidably connected in the sliding groove. A second spring is provided between the push rod and the inner wall of the sliding groove. An arc-shaped counterweight plate is fixedly connected to the part of the push rod extending outside the control block. A first hinge seat is provided on the arc-shaped counterweight plate. A lifting block is provided above the control block. A second hinge seat is provided on the peripheral sidewall of the lifting block. A connecting rod is provided between each first hinge seat and the corresponding second hinge seat. An annular limiting groove is provided on the upper wall of the lifting block. An arc-shaped block is slidably connected along a circumferential trajectory in the annular limiting groove. The lower end of the L-shaped rod is fixedly connected to the upper end of the arc-shaped block.

[0011] Preferably, two limiting plates are provided between the two side plates, and the L-shaped rod is located between the two limiting plates.

[0012] Preferably, a fixed rod is fixedly connected to the upper end of the control block, and the lifting block is slidably connected to the fixed rod.

[0013] Preferably, the lower end of the guide plate is provided with a collection mechanism for collecting and treating harmful gases generated during welding. The collection mechanism includes a gas guide box fixedly connected to the lower end of the guide plate. A piston plate is slidably connected inside the gas guide box. Multiple third springs are provided between the piston plate and the top wall of the gas guide box. Both sides of the bottom wall of the gas guide box are fixedly connected with suction pipes. The bottom ends of the suction pipes are directly opposite the welding gun, and the bottom ends of the suction pipes are fixedly connected to suction nozzles. An exhaust pipe is fixedly connected to one side of the outer wall of the gas guide box, and the other end of the exhaust pipe is fixedly connected to a gas storage box. Both the suction pipe and the exhaust pipe are provided with one-way valves.

[0014] Compared with existing technologies, the advantages of this metal door and window welding equipment are: This invention employs a welding mechanism. During the welding process, a DC motor drives a drive rod to rotate, causing the welding gun to reciprocate horizontally. Simultaneously, a translation plate moves a slider back and forth on a resistance rod, continuously adjusting the resistance value of the DC motor circuit. This causes the rotation speeds of the two inner and two outer arc-shaped toothed grooves to constantly change. According to the heat input formula: Heat Input (HI) = V * I * 60 / S, the heat input during welding is inversely proportional to the welding speed. Therefore, at slower welding speeds, the heat input decreases, while at faster welding speeds, it increases. This continuous adjustment of the heat input keeps it dynamically changing during the welding process. This dynamic heat input allows for more precise control of the heat distribution during welding, preventing localized overheating or undercooling, thus reducing the width and unevenness of the heat-affected zone. This prevents deformation of metal doors and windows while improving the welding effect.

[0015] This invention incorporates a vibration mechanism. During the welding process, the translation plate reciprocates horizontally, causing the L-shaped rod and guide roller above it to reciprocate horizontally along the guide plate. The guide plate then drives the telescopic rod to reciprocate, causing the welding gun to reciprocate vertically and vibrate. This vibration reduces the surface tension of the molten pool, making it easier for gases to escape during welding, thus reducing the probability of bubble formation and enhancing the density and uniformity of the weld.

[0016] This invention, through the setting of an adjustment mechanism, causes the centrifugal force of the arc-shaped counterweight plate to continuously change during vibration due to the constantly changing rotational speed of the drive rod. When the drive rod rotates faster, the centrifugal force of the arc-shaped counterweight plate is larger, the lower the height of the L-shaped rod on the lifting block, and the greater the vertical displacement amplitude of the guide plate. Thus, at higher welding speeds, the vibration amplitude is correspondingly increased to improve the fluidity and stability of the molten pool. When the drive rod rotates slower, the centrifugal force of the arc-shaped counterweight plate is smaller, and the closer it is to the control block, the smaller the vertical displacement amplitude of the guide plate driven by the guide roller during horizontal displacement. Thus, at lower welding speeds, the vibration amplitude is correspondingly reduced to avoid excessive disturbance to the molten pool leading to unevenness.

[0017] This invention, through the setting of a collection mechanism, allows the guide plate to move down and up rapidly during vibration due to the large inclination of the two side walls of the triangular guide block. This enables the piston plate inside the gas guide box to remain in its original position under the action of inertial force. After the guide plate resets, the piston plate is reset under the elastic force of the third spring. During vibration and the intervals between vibrations, the piston plate can be driven to move vertically relative to the gas guide box. Thus, during continuous vibration, the piston plate continuously pumps the harmful gases generated during welding into the gas storage box for collection, greatly reducing the risk of workers being exposed to harmful gases and protecting their health. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial structural diagram of the area above the translation plate in this utility model; Figure 3 This is a partial structural diagram of the vibration mechanism in this utility model; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged view of point B in the middle; Figure 6 This is a partial structural diagram of the collecting mechanism in this utility model.

[0019] In the diagram: 1. Welding table; 11. Conveyor belt; 12. Side plate; 13. Fixing plate; 2. Welding mechanism; 21. Translation plate; 22. Extension column; 23. Welding gun; 24. DC motor; 25. Drive rod; 26. Inner arc-shaped toothed groove; 27. Outer arc-shaped toothed groove; 28. Transmission rod; 29. ​​Drive gear; 210. Rack; 211. Transmission gear; 212. Resistance rod; 213. Sliding plate; 3. Vibration mechanism; 31. L-shaped rod; 32. Guide roller; 33. Fixing block; 34. Moving block; 35. First spring 36. Guide plate; 37. Triangular guide block; 38. Telescopic rod; 4. Strip-shaped limiting groove; 5. Adjustment mechanism; 51. Control block; 52. Slide groove; 53. Push rod; 54. Second spring; 55. Arc-shaped counterweight plate; 56. First hinge seat; 57. Lifting block; 58. Second hinge seat; 59. Connecting rod; 510. Annular limiting groove; 511. Arc-shaped block; 6. Limiting plate; 7. Fixed rod; 8. Collection mechanism; 81. Air guide box; 82. Piston plate; 83. Third spring; 84. Air extraction pipe; 85. Air extraction nozzle. Detailed Implementation

[0020] The following embodiments are for illustrative purposes only and are not intended to limit the scope of this invention.

[0021] Example: Refer to Figures 1 to 6 A metal door and window welding equipment, comprising: Welding table 1, with a conveyor belt 11 at the upper end of the welding table 1, and side plates 12 fixedly connected to both sides of the upper end of the welding table 1 on the conveyor belt 11, and a fixing plate 13 fixedly connected between the two side plates 12. Welding mechanism 2 is used to weld metal doors and windows at different welding speeds. Welding mechanism 2 includes a translation plate 21 that is slidably connected to the upper end of fixed plate 13 in the horizontal direction. An extension column 22 is fixedly connected to the lower end of translation plate 21. A welding gun 23 is provided below the extension column 22. A DC motor 24 is fixedly connected to the upper end of translation plate 21. A drive rod 25 is fixedly connected to the output end of DC motor 24. Two inner arc-shaped toothed grooves 26 and two outer arc-shaped toothed grooves 27 are fixedly connected to the periphery of drive rod 25. The two inner arc-shaped toothed grooves 26 and two outer arc-shaped toothed grooves 27 are staggered. A transmission rod 28 is rotatably connected to the upper end of translation plate 21. A drive gear 29 is fixedly connected to transmission rod 28. The two inner arc-shaped toothed grooves 26 and two outer arc-shaped toothed grooves 27 alternately mesh with drive gear 29. A transmission assembly for driving translation plate 21 to slide in the horizontal direction is provided at the upper end of fixed plate 13.

[0022] Specifically, the welding gun 23 uses electric arc welding to perform welding. The principle is to generate high temperature through the electric arc, which melts the metal at the welding point to form a welded joint. The reasonable welding range is between 10-30mm.

[0023] Specifically, the transmission assembly includes a rack 210 fixedly connected to the upper end of the fixed plate 13, a transmission gear 211 fixedly connected to the transmission rod 28 at a position below the transmission gear 211, the rack 210 meshing with the transmission gear 211, a sliding rheostat fixedly connected to the lower end of the rack 210, and the DC motor 24 connected in series with the power supply device through the sliding rheostat.

[0024] Specifically, the sliding rheostat includes a resistance rod 212 fixedly connected to the lower end of the rack 210, and a slider 213 slidably connected to the resistance rod 212 fixedly connected to the translation plate 21.

[0025] In existing technologies, the same heat input is typically used for welding metal doors and windows, leading to overheating in certain areas, a large heat-affected zone, deformation of the weld joint and the metal doors and windows, and reduced weld quality. This invention addresses this issue by setting up a welding mechanism 2. During the welding process, a DC motor 24 drives a drive rod 25 to rotate, causing two inner arc-shaped toothed grooves 26 and two outer arc-shaped toothed grooves 27 to alternately mesh with a drive gear 29. This causes the transmission gear 211 to periodically rotate in both directions. Since the transmission gear 211 rotates, it moves horizontally along the rack 210, thus driving a horizontally moving translation plate 21. This allows the welding gun 23 below the translation plate 21 to move horizontally back and forth, achieving reciprocating welding of the metal door and window welding position. This provides a multi-pass welding effect, optimizes weld quality, improves the strength and durability of the weld joint, is applicable to various arc welding methods, and improves welding efficiency. During the process, the translation plate 21 drives the slider 213 to slide back and forth on the resistor rod 212, continuously adjusting the resistance value of the circuit where the DC motor 24 is located. This causes the output current and power of the DC motor 24 to change continuously, resulting in continuous changes in the rotation speed of the two inner arc-shaped toothed grooves 26 and the two outer arc-shaped toothed grooves 27. According to the heat input formula: heat input (HI) = V*I*60 / S, where V is the welding voltage, I is the welding current, and S is the welding speed, it can be seen that the heat input during welding is inversely proportional to the welding speed S. Therefore, when the welding speed is slow, the heat input decreases accordingly, while when the welding speed is fast, the heat input increases accordingly. This continuous adjustment of the heat input keeps the heat input in a dynamic state during the welding process. Through the dynamic change of the heat input, the heat distribution during welding can be controlled more precisely, avoiding local overheating or undercooling, thereby reducing the width and unevenness of the heat-affected zone, preventing deformation of metal doors and windows, and improving the welding effect.

[0026] Meanwhile, because the heat input decreases when the welding speed is slow and increases when the welding speed is fast, the dynamically changing heat input can reduce local heat input and avoid local overheating when the heat input is high, and reduce the welding speed when the heat input is low to ensure sufficient local heat input. This avoids the situation where one position is always high heat input and another position is always low heat input, which would affect the welding effect.

[0027] A vibration mechanism 3 is provided above the fixed plate 13 to introduce vibration during welding to reduce the tension on the surface of the molten pool. The vibration mechanism 3 includes an L-shaped rod 31 installed above the translation plate 21. A guide roller 32 is rotatably connected to the lower end of the L-shaped rod 31. A fixed block 33 is fixedly connected to the side wall of the side plate 12. A moving block 34 is slidably connected to the side wall of the side plate 12 in the vertical direction. A first spring 35 is provided between the moving block 34 and the fixed block 33. A guide plate 36 is fixedly connected between the two moving blocks 34. Multiple triangular guide blocks 37 are linearly arrayed on the guide plate 36. The guide roller 32 contacts and rolls with the multiple triangular guide blocks 37. A telescopic rod 38 is provided between the extension column 22 and the welding gun 23. The guide plate 36 is fixedly connected to the side wall of the telescopic end of the telescopic rod 38.

[0028] Specifically, a strip-shaped limiting groove 4 is provided on the side wall of the side plate 12, and the moving block 34 is slidably connected to the inner wall of the strip-shaped limiting groove 4. The moving block 34 can be limited by the strip-shaped limiting groove 4, so that the two moving blocks 34 can only drive the guide plate 36 to move in the vertical direction.

[0029] To address the problem in existing technologies where gases (such as water vapor, oxygen, and nitrogen) cannot be completely expelled or are trapped in the weld, leading to air bubbles inside the weld, weakening its density and uniformity, and affecting the overall strength and usability of metal doors and windows, this invention addresses this issue by incorporating a vibration mechanism 3. During welding, the translation plate 21 reciprocates horizontally, causing the L-shaped rod 31 and guide roller 32 above it to reciprocate horizontally along the guide plate 36. The guide roller 32 presses down against multiple triangular guide blocks 37, causing the guide plate 36 to reciprocate downwards. Under the elastic force of the first spring 35, the guide plate 36 reciprocates upwards and returns to its original position. The reciprocating vertical displacement of the guide plate 36 then drives the telescopic rod 38 to... The reciprocating extension and retraction of the welding torch 23 allows for reciprocating vertical displacement. Introducing vibration during welding reduces the surface tension of the molten pool, making it easier for gases to escape and thus reducing the probability of bubble formation. This enhances the density and uniformity of the weld. Simultaneously, vibration effectively prevents impurities (such as oxides and slag) from being trapped within the weld, reducing slag inclusions and improving welding quality. The welding torch 23 generates high temperatures through an electric arc, melting the metal at the weld joint. The arc welding method typically has a reasonable arc length range of 10-30mm. Therefore, when the welding torch 23 moves vertically, it only needs to be kept within 10-30mm to ensure normal welding operation.

[0030] The fixed plate 13 is also provided with an adjustment mechanism 5 for adjusting the vibration amplitude according to the welding speed. The adjustment mechanism 5 includes a control block 51 fixedly connected to the top of the drive rod 25. The peripheral sidewall of the control block 51 is provided with several sliding grooves 52. A push rod 53 is slidably connected in the sliding groove 52. A second spring 54 is provided between the push rod 53 and the inner wall of the sliding groove 52. An arc-shaped counterweight plate 55 is fixedly connected to the part of the push rod 53 extending outside the control block 51. A first hinge seat 56 is provided on the arc-shaped counterweight plate 55. A lifting block 57 is provided above the control block 51. A second hinge seat 58 is provided on the peripheral sidewall of the lifting block 57. A connecting rod 59 is provided between each first hinge seat 56 and the corresponding second hinge seat 58. An annular limiting groove 510 is provided on the upper wall of the lifting block 57. An arc-shaped block 511 is slidably connected in the annular limiting groove 510 along the circumferential trajectory. The lower end of the L-shaped rod 31 is fixedly connected to the upper end of the arc-shaped block 511.

[0031] Specifically, two limiting plates 6 are provided between the two side plates 12, and the L-shaped rod 31 is located between the two limiting plates 6, ensuring that the L-shaped rod 31 can only move horizontally between the two limiting plates 6. At the same time, since the arc-shaped block 511 can move in a circular motion on the inner wall of the annular limiting groove 510, the L-shaped rod 31 will not rotate with the driving rod 25 when the driving rod 25 drives the control block 51 and the lifting block 57 to rotate. At the same time, when the height of the lifting block 57 changes, it can drive the L-shaped rod 31 to change its height, ensuring the adjustment of the vibration amplitude and avoiding motion interference.

[0032] Specifically, a fixed rod 7 is fixedly connected to the upper end of the control block 51, and the lifting block 57 is slidably connected to the fixed rod 7. The fixed rod 7 can limit the lifting block 57, so that the lifting block 57 is coaxial with the control block 51 and moves vertically, which improves the stability of the lifting block 57, thereby improving the stability of the L-shaped rod 31 and ensuring the stable operation of the vibration mechanism 3.

[0033] It is worth mentioning that, by setting the adjustment mechanism 5, this utility model ensures that during vibration, the rotational speed of the drive rod 25 continuously changes, thus causing the centrifugal force of the arc-shaped counterweight plate 55 to continuously change. This change in centrifugal force further has the following effects: When the drive rod 25 rotates at a high speed, the centrifugal force of the arc-shaped counterweight plate 55 is greater. The farther away it is from the control block 51, the lower the height of the lifting block 57 is caused by the action of the first hinge seat 56, the second hinge seat 58 and the connecting rod 59. This results in the lower height of the L-shaped rod 31 on the lifting block 57, and the greater the amplitude of the vertical displacement of the guide plate 36 when the guide roller 32 makes horizontal displacement. Thus, at a higher welding speed, the vibration amplitude is correspondingly increased to improve the fluidity and stability of the molten pool. When the rotation speed of the drive rod 25 is slow, the centrifugal force of the arc-shaped counterweight plate 55 is small. The closer it is to the control block 51, the smaller the amplitude of the vertical displacement of the guide plate 36 when the guide roller 32 makes horizontal displacement. Thus, at a lower welding speed, the vibration amplitude is reduced accordingly to avoid excessive disturbance to the molten pool and cause unevenness. This allows the introduced vibration amplitude to be adjusted according to the welding speed, ensuring that the vibration amplitude is always kept within the optimal range and improving the vibration effect.

[0034] The lower end of the guide plate 36 is provided with a collection mechanism 8 for collecting and treating harmful gases generated during welding. The collection mechanism 8 includes a gas guide box 81 fixedly connected to the lower end of the guide plate 36. A piston plate 82 is slidably connected inside the gas guide box 81. Multiple third springs 83 are provided between the piston plate 82 and the inner top wall of the gas guide box 81. Both sides of the bottom wall of the gas guide box 81 are fixedly connected with exhaust pipes 84. The bottom end of the exhaust pipes 84 is directly facing the welding gun 23, and the bottom end of the exhaust pipes 84 is fixedly connected to an exhaust nozzle 85. An exhaust pipe is fixedly connected to one side of the outer wall of the gas guide box 81, and the other end of the exhaust pipe is fixedly connected to a gas storage box. Both the exhaust pipe 84 and the exhaust pipe are provided with one-way valves.

[0035] Specifically, the one-way valve is designed so that when the piston plate 82 moves upward relative to the air guide box 81, harmful gases from the periphery of the welding position can only be pumped into the air guide box 81 through the suction pipe 84. And when the piston plate 82 moves downward relative to the air guide box 81, harmful gases in the air guide box 81 can only be pumped out to the storage box through the exhaust pipe. This ensures the collection effect of harmful gases and avoids backflow, which would prevent the effective collection of harmful gases.

[0036] Specifically, when the guide roller 32 contacts and pushes the triangular guide block 37 downward, the guide plate 36 will drive the air guide box 81 downward, so that the piston plate 82 can move upward relative to the air guide box 81 under the action of inertial force. When the guide roller 32 disengages from the triangular guide block 37, the guide plate 36 will drive the air guide box 81 upward, so that the piston plate 82 can move downward relative to the air guide box 81 under the action of inertial force, thereby realizing the pumping in and out of harmful gases. During the interval of vibration, the piston plate 82 will be held in the middle position in the air guide box 81 under the elastic force of the third spring 83.

[0037] In addition, by setting up a collection mechanism 8, during vibration, due to the large inclination of the two side walls of the triangular guide block 37, the guide roller 32 moves down and up quickly when it contacts and pushes the triangular guide block 37 and when it disengages from the triangular guide block 37. This allows the piston plate 82 in the air guide box 81 to remain in its original position under the action of inertial force. After the guide plate 36 is reset, the piston plate 82 is reset under the elastic force of the third spring 83. During vibration and the interval between vibrations, the piston plate 82 can be driven to perform a reciprocating vertical displacement relative to the air guide box 81. Thus, during continuous vibration, the piston plate 82 continuously pumps the harmful gases generated during welding into the air guide box 81 through the air extraction pipe 84 and the air extraction nozzle, and continuously pumps the harmful gases in the air guide box 81 out to the gas storage box for collection through the exhaust pipe. This greatly reduces the risk of workers being exposed to harmful gases and protects the health of workers.

[0038] The functional principle of this utility model can be explained through the following operation methods: During welding, the metal doors and windows are placed on the conveyor belt 11 and transported to the welding position by the conveyor belt 11. Then the welding gun 23 is turned on to weld the metal doors and windows. During the welding process, the DC motor 24 drives the drive rod 25 to rotate, causing the two inner arc-shaped toothed grooves 26 and the two outer arc-shaped toothed grooves 27 to mesh with the drive gear 29 in turn. This causes the transmission gear 211 to periodically rotate in both directions, allowing the welding gun 23 below the translation plate 21 to perform reciprocating horizontal displacement, thus achieving reciprocating welding processing at the welding position. During this process, the translation plate 21 will drive the slider 213 to slide back and forth on the resistance rod 212, continuously adjusting the resistance value of the circuit where the DC motor 24 is located. This causes the power of the DC motor 24 to change continuously, and the rotation speed of the two inner arc-shaped toothed grooves 26 and the two outer arc-shaped toothed grooves 27 to change continuously. When the welding speed is slow, the heat input decreases accordingly, while when the welding speed is fast, the heat input increases accordingly, thus achieving continuous adjustment of the heat input. During the welding process, the translation plate 21 will reciprocate horizontally, which will drive the L-shaped rod 31 and the guide roller 32 above it to reciprocate horizontally along the guide plate 36. The guide roller 32 presses down on the multiple triangular guide blocks 37, which allows the guide plate 36 to reciprocate vertically, driving the telescopic rod 38 to reciprocate extension and retraction, thereby allowing the welding gun 23 to reciprocate vertically, introducing vibration during the welding process. During vibration, the rotational speed of the drive rod 25 changes continuously, which in turn causes the centrifugal force of the arc-shaped counterweight plate 55 to change continuously. When the rotational speed of the drive rod 25 is faster, the centrifugal force of the arc-shaped counterweight plate 55 is larger, which causes the guide roller 32 to drive the guide plate 36 to move vertically at a larger amplitude when making horizontal displacement. This results in a higher vibration amplitude at a higher welding speed. When the rotational speed of the drive rod 25 is slower, the centrifugal force of the arc-shaped counterweight plate 55 is smaller, resulting in a lower vibration amplitude at a lower welding speed. During vibration, due to the large inclination of the two side walls of the triangular guide block 37, the guide plate 36 moves down and up at a relatively fast speed when the guide roller 32 contacts and pushes the triangular guide block 37 and disengages from the triangular guide block 37. This allows the piston plate 82 in the gas guide box 81 to reciprocate vertically relative to the gas guide box 81, continuously pumping the harmful gases generated during the welding process into the gas storage box for collection.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A metal door and window welding equipment, characterized in that, include: Welding table (1), the upper end of the welding table (1) is provided with a conveyor belt (11), and the upper end of the welding table (1) is fixedly connected to both sides of the conveyor belt (11), and a fixing plate (13) is fixedly connected between the two side plates (12). A welding mechanism (2) is used to weld metal doors and windows at different welding speeds. The welding mechanism (2) includes a translation plate (21) that is slidably connected to the upper end of a fixed plate (13) in a horizontal direction. An extension column (22) is fixedly connected to the lower end of the translation plate (21). A welding gun (23) is provided below the extension column (22). A DC motor (24) is fixedly connected to the upper end of the translation plate (21). A drive rod (25) is fixedly connected to the output end of the DC motor (24). The periphery is fixedly connected to two inner arc-shaped toothed grooves (26) and two outer arc-shaped toothed grooves (27). The inner arc-shaped toothed grooves (26) and the outer arc-shaped toothed grooves (27) are staggered. The upper end of the translation plate (21) is rotatably connected to a transmission rod (28). A drive gear (29) is fixedly connected to the transmission rod (28). The inner arc-shaped toothed grooves (26) and the outer arc-shaped toothed grooves (27) mesh with the drive gear (29) in turn. The upper end of the fixed plate (13) is provided with a transmission assembly that drives the translation plate (21) to slide in the horizontal direction.

2. The metal door and window welding equipment according to claim 1, characterized in that, The transmission assembly includes a rack (210) fixedly connected to the upper end of the fixed plate (13), a transmission gear (211) fixedly connected to the transmission rod (28) below the transmission gear (211), the rack (210) meshing with the transmission gear (211), a sliding rheostat fixedly connected to the lower end of the rack (210), and the DC motor (24) connected in series with the power supply device through the sliding rheostat.

3. The metal door and window welding equipment according to claim 2, characterized in that, The sliding rheostat includes a resistance rod (212) fixedly connected to the lower end of the rack (210), and a slider (213) fixedly connected to the translation plate (21) and slidably connected to the resistance rod (212).

4. The metal door and window welding equipment according to claim 3, characterized in that, A vibration mechanism (3) is provided above the fixed plate (13) to introduce vibration during welding to reduce the tension on the surface of the molten pool. The vibration mechanism (3) includes an L-shaped rod (31) installed above the translation plate (21). The lower end of the L-shaped rod (31) is rotatably connected to a guide roller (32). A fixed block (33) is fixedly connected to the side wall of the side plate (12). A moving block (34) is slidably connected to the side wall of the side plate (12) in the vertical direction. A first spring (35) is provided between the moving block (34) and the fixed block (33). A guide plate (36) is fixedly connected between the two moving blocks (34). Multiple triangular guide blocks (37) are linearly arrayed on the guide plate (36). The guide roller (32) contacts and rolls with the multiple triangular guide blocks (37). A telescopic rod (38) is provided between the extension column (22) and the welding gun (23). The guide plate (36) is fixedly connected to the side wall of the telescopic end of the telescopic rod (38).

5. The metal door and window welding equipment according to claim 4, characterized in that, A strip-shaped limiting groove (4) is provided on the side wall of the side plate (12), and the moving block (34) is slidably connected to the inner wall of the strip-shaped limiting groove (4).

6. The metal door and window welding equipment according to claim 4, characterized in that, The fixed plate (13) is also provided with an adjustment mechanism (5) for adjusting the vibration amplitude according to the welding speed. The adjustment mechanism (5) includes a control block (51) fixedly connected to the top of the drive rod (25). The peripheral sidewall of the control block (51) is provided with a plurality of sliding grooves (52). A push rod (53) is slidably connected in the sliding groove (52). A second spring (54) is provided between the push rod (53) and the inner wall of the sliding groove (52). The part of the push rod (53) extending outside the control block (51) is fixedly connected with an arc-shaped counterweight plate (55). A first hinge seat (56) is provided on the plate (55), and a lifting block (57) is provided above the control block (51). A second hinge seat (58) is provided on the periphery of the lifting block (57). A connecting rod (59) is provided between each first hinge seat (56) and the corresponding second hinge seat (58). An annular limiting groove (510) is provided on the upper wall of the lifting block (57). An arc-shaped block (511) is slidably connected along the circumferential trajectory in the annular limiting groove (510). The lower end of the L-shaped rod (31) is fixedly connected to the upper end of the arc-shaped block (511).

7. The metal door and window welding equipment according to claim 4, characterized in that, Two limiting plates (6) are provided between the two side plates (12), and the L-shaped rod (31) is located between the two limiting plates (6).

8. The metal door and window welding equipment according to claim 6, characterized in that, The upper end of the control block (51) is fixedly connected to a fixed rod (7), and the lifting block (57) is slidably connected to the fixed rod (7).

9. The metal door and window welding equipment according to claim 4, characterized in that, The lower end of the guide plate (36) is provided with a collection mechanism (8) for collecting and treating harmful gases generated during welding. The collection mechanism (8) includes a gas guide box (81) fixedly connected to the lower end of the guide plate (36). The gas guide box (81) is internally sealed and slidably connected with a piston plate (82). Multiple third springs (83) are provided between the piston plate (82) and the inner top wall of the gas guide box (81). Both sides of the bottom wall of the gas guide box (81) are fixedly connected with a suction pipe (84). The bottom end of the suction pipe (84) is directly opposite the welding gun (23), and the bottom end of the suction pipe (84) is fixedly connected to a suction nozzle (85). An exhaust pipe is fixedly connected to one side of the outer wall of the gas guide box (81), and the other end of the exhaust pipe is fixedly connected to a gas storage box. Both the suction pipe (84) and the exhaust pipe are provided with a one-way valve.

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