Aluminum profile sheet weld joint welding device

Abstract

The aluminum profile sheet weld joint welding device comprises a welding mechanism, the welding mechanism comprises a welding equipment body, the bottom end of the welding equipment body communicates with a material injection hopper, the bottom end of the material injection hopper communicates with a welding main pipe, and the welding main pipe is electrically connected with the welding equipment body through an external power source; a protection mechanism is arranged at the bottom end of the welding main pipe, the protection mechanism comprises a pressing plate installed at the bottom end of the welding main pipe, a filtering assembly is arranged in the pressing plate, and the filtering assembly comprises a box body installed in the pressing plate. Welding defects caused by water or impurities are effectively prevented, gas in a welding area can be effectively exhausted, air holes generated in the welding seam repairing process are reduced, the compactness and strength of a welding seam are improved, and the reliability and durability of a welding joint are ensured.

Description

Technical Field

[0001] The invention relates to the field of welding, and in particular to a welding device for a weld seam of an aluminum profile sheet. Background Art

[0002] In the field of modern industrial manufacturing, aluminum profile sheets are widely used in aerospace, automobile manufacturing, architectural decoration and other industries due to their excellent properties such as light weight, high strength and corrosion resistance. In the connection process of aluminum profile sheets, welding, as an important connection method, can not only achieve high-strength connection, but also ensure the integrity and aesthetics of the structure.

[0003] However, during the aluminum welding process, hydrogen pores are easily generated due to the high thermal conductivity and easy oxidation of aluminum. These pores will not only reduce the strength and toughness of the weld, but may also become the starting point of corrosion, shortening the service life of the component. At the same time, when performing repair welding on aluminum profile thin plates, since the repair area is often small and complex in shape, traditional welding methods are difficult to ensure the uniform flow of the repair fluid and the complete fusion of the weld, which can easily lead to pores and unfused defects inside the weld, seriously affecting the mechanical properties and sealing of the welded joint. Summary of the invention

[0004] The purpose of the present invention is to provide an aluminum profile thin plate welding device to solve the problem mentioned in the above background technology that hydrogen pores are easily generated during aluminum welding. These pores will not only reduce the strength and toughness of the weld, but may also become the starting point of corrosion, shortening the service life of the component.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding device for an aluminum profile thin plate weld, comprising a welding mechanism, the welding mechanism comprising a welding equipment body, the bottom end of the welding equipment body is connected to a filling hopper, the bottom end of the filling hopper is connected to a welding main pipe, the welding main pipe is electrically connected to the welding equipment body through an external power supply, the bottom end of the welding main pipe is provided with a protective mechanism, the protective mechanism comprises a pressing plate installed at the bottom end of the welding main pipe, a filter assembly is arranged inside the pressing plate, the filter assembly comprises a box body installed inside the pressing plate, three box bodies filled with dry carbon powder are circumferentially installed inside the pressing plate, the three fan-shaped box bodies are connected in series through a connecting pipe, a top plate is installed at the top end of the box body, an air vent is opened at the bottom end of the top plate, and the inner bottom wall of the box body is supported by a plurality of pressure rods and is provided with a first air permeable film.

[0006] As a preferred technical solution of the present invention, an auxiliary component is arranged inside the pressure plate, and the auxiliary component and the filter component both include three box bodies installed therein, and the auxiliary component is rotatably installed on the top of the filter component, and the box bodies in the auxiliary component and the box bodies in the filter component are staggeredly installed inside the pressure plate.

[0007] As a preferred technical solution of the present invention, a limiting ring is arranged between the filter assembly and the auxiliary assembly, and a pad is installed between the top of the auxiliary assembly and the inner wall of the pressure plate.

[0008] As a preferred technical solution of the present invention, an air cylinder is installed on the outer surface of one of the boxes in the filter assembly, an air rod is slidably installed on the free end of the air cylinder, and the free end of the air rod is connected to the surface of one of the boxes in the auxiliary mechanism.

[0009] As a preferred technical solution of the present invention, a temperature control component is provided on the outer surface of the welding main pipe, and the temperature control component includes an air pump installed on the outer surface of the welding equipment body. A heating component connected to the output end of the air pump is installed on the outer surface of the welding equipment body, and a heat exhaust pipe is installed on the air outlet end of the heating component. A plurality of heat absorbing plates are installed on the outer surface of the welding main pipe, and the free end of the heat exhaust pipe is connected to the interior of the heat absorbing plate.

[0010] As a preferred technical solution of the present invention, the outer surface of the welding main pipe is provided with a symmetrically installed limit plate, the interior of the limit plate is connected with the interior of the heat absorbing plate, and the limit plate is connected with the input end of the air pump and an air suction pipe is installed.

[0011] As a preferred technical solution of the present invention, a drying component is provided at the top of the pressing plate, which includes a material storage channel installed at the top of the pressing plate, the material storage channel and a first through hole opened on the surface of the pad, a second through hole opened on the surface of the box body in the auxiliary component, and a third through hole opened on the surface of the box body in the filter component are connected in sequence, an annular tube is installed between the material storage channel and the inner cavity of the limiting plate, a second air permeable film is provided on the annular tube near the limiting plate, an arc-shaped baffle is installed on the inner wall of the annular tube near the second air permeable film, and a partition is installed on the inner wall of the annular tube near the material storage channel.

[0012] As a preferred technical solution of the present invention, an exhaust component is provided at the bottom end of the pressure plate, and the exhaust component includes a circular groove opened at the bottom end of the pressure plate, a welding groove connected to the welding main pipe is opened in the middle position of the bottom end of the pressure plate, and a plurality of guide plates are installed inside the air guide groove of the welding groove close to the circular groove, and an exhaust branch pipe is installed in the inner cavity of the circular groove and the limit plate.

[0013] As a preferred technical solution of the present invention, a sealing mechanism is provided at the bottom end of the pressure plate, and the sealing mechanism includes a sealing gasket slidably installed inside the pressure plate, and the cross-section of the sealing gasket is conical, and a spring is installed between the top end of the sealing gasket and the inner top wall of the pressure plate.

[0014] As a preferred technical solution of the present invention, it includes a support frame, a processing table, and a moving component. The support frame is used to support the welding equipment body, the processing table is fixedly installed on the top of the support frame, the moving component is arranged on the top of the support frame, and the welding mechanism is arranged on the moving component for movement.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can effectively exhaust the gas in the welding area through the combined action of the exhaust component and the pressure plate, reduce the pores generated during the weld repair process, improve the density and strength of the weld, and ensure the reliability and durability of the weld joint.

[0016] 2. The present invention sets a temperature control component on the outer surface of the welding main pipe, uses an air pump and a heating component to accurately control the temperature of the welding area, ensures that the repair fluid flows stably inside the spot welding pipe, avoids condensation and jamming problems caused by the decrease in the surface temperature of the repair fluid, and thus significantly improves the accuracy and uniformity of weld repair.

[0017] 3. The present invention arranges a box body filled with dry carbon powder inside the pressure plate, and utilizes the hygroscopic property of the dry carbon powder to dry the welding area, thereby effectively preventing welding defects caused by moisture or impurities, and further improving the integrity and quality of weld repair. At the same time, the second box body can be rotated to adjust its relative position with the first box body, thereby achieving coverage and drying of a larger range of the welding area, and can also achieve targeted drying of different parts of the welding area.

[0018] 4. The present invention provides an annular tube so that the carbon powder can circulate inside the annular tube. This design not only improves the utilization rate of the dry carbon powder, but also ensures the continuity and stability of the drying process. Through the circulation, the dry carbon powder can continuously contact the welding area, thereby maintaining its drying effect. At the same time, the design of the partition and the arc baffle enables the dry carbon powder to maintain a certain pressure and flow rate during the circulation process, thereby improving the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the welding mechanism structure of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the cross-sectional structure of the heat absorbing plate of the present invention; Figure 6It is a schematic diagram of the pressing plate structure of the present invention; Figure 7 It is a schematic diagram of the internal structure of the annular tube of the present invention; Figure 8 It is a schematic diagram of the structure of the internal components of the pressing plate of the present invention; Fig. 9 It is a schematic diagram of the combined box structure of the present invention; Fig.10 It is a schematic diagram of the internal structure of the box body of the present invention.

[0020] In the figure: 1, support frame; 2, processing table; 3, moving component; 4, welding mechanism; 41, welding equipment body; 42, injection hopper; 43, welding main pipe; 44, temperature control component; 441, air pump; 442, heating component; 443, heat exhaust pipe; 444, heat absorption plate; 445, suction pipe; 446, limit plate; 5, protection mechanism; 51, pressure plate; 52, filter component; 521, top plate; 522, first breathable film; 523, pressure rod; 524, box body; 53, limit ring; 54, auxiliary Component; 55, connecting pipe; 56, pad; 57, drying component; 571, exhaust component; 5711, exhaust branch pipe; 5712, circular groove; 5713, guide plate; 5714, air cylinder; 5715, air rod; 572, second breathable film; 573, arc baffle; 574, annular tube; 575, partition; 576, storage channel; 577, first through hole; 578, second through hole; 579, third through hole; 6, sealing mechanism; 61, spring; 62, sealing gasket; 7, welding groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application, and the phrase "embodiments" appearing in various locations in the specification do not necessarily refer to the same embodiments, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] See also Figure 1-10The present invention provides an aluminum profile thin plate welding device, including a welding mechanism 4, the welding mechanism 4 includes a welding equipment body 41, the bottom end of the welding equipment body 41 is connected to a filling hopper 42, the bottom end of the filling hopper 42 is connected to a welding main pipe 43, and the welding main pipe 43 is electrically connected to the welding equipment body 41 through an external power supply.

[0024] Among them, the design of the injection hopper 42 enables it to accurately control the flow of the plastic liquid. During the spot welding repair process, the flow of the plastic liquid needs to be strictly controlled to ensure the quality of the welding point. By adjusting the valve or opening size of the injection funnel, the flow of the plastic liquid can be accurately adjusted to meet the accuracy of the welding repair of the welding main pipe 43.

[0025] In the technical solution of the embodiment of the present application, a protection mechanism 5 is provided at the bottom end of the welding main pipe 43 , and the protection mechanism 5 includes a pressing plate 51 installed at the bottom end of the welding main pipe 43 , and a filter assembly 52 is provided inside the pressing plate 51 .

[0026] Among them, the pressure plate 51 can provide stable support for the spot welded pipe, especially during the spot welding repair process, when the spot welded pipe is affected by the welding heat and pressure, the existence of the pressure plate 51 can prevent it from unnecessary movement or deformation. This stability is crucial to ensuring the accurate position of the welding point and the welding quality; the pressure plate 51 can cover the free end of the spot welded pipe to prevent sparks, slag and other splashes generated during the welding process from causing damage to the surrounding environment and personnel.

[0027] In the technical solution of the embodiment of the present application, the filter assembly 52 includes a box body 524 installed inside the pressure plate 51, three box bodies 524 filled with dry carbon powder are circumferentially installed inside the pressure plate 51, and the three fan-shaped box bodies 524 are connected in series through a connecting pipe 55. A top plate 521 is installed at the top of the box body 524, and an air hole is opened at the bottom end of the top plate 521. The inner bottom wall of the box body 524 is supported by multiple pressure rods 523 and is installed with a first air permeable film 522.

[0028] Among them, a box body 524 with carbon powder is installed inside the pressure plate 51, and the hygroscopic property of dry carbon powder is used to dry the welding area, which effectively prevents welding defects caused by moisture or impurities, further improves the integrity and quality of weld repair, and the three fan-shaped box bodies 524 can increase the hygroscopic area; by arranging a first breathable film 522 between the box body 524 and the weld welding area, the first breathable film 522 can block the invasion of external moisture to a certain extent, and can effectively reduce this effect with the carbon powder, maintain a dry environment in the welding area, thereby improving the strength and toughness of the welded joint; during the welding process, some harmful gases or smoke may be generated in the welding area, and the first breathable film 522 can allow these gases to be discharged through the film, thereby maintaining air circulation in the welding area and reducing the accumulation of harmful substances.

[0029] In other embodiments, an auxiliary component 54 is provided inside the pressure plate 51, and the auxiliary component 54 and the filter component 52 both include three box bodies 524 installed thereon, and the auxiliary component 54 is rotatably installed on the top of the filter component 52, and the box bodies 524 in the auxiliary component 54 and the box bodies 524 in the filter component 52 are staggeredly installed inside the pressure plate 51, and an air cylinder 5714 is installed on the outer surface of one of the box bodies 524 in the filter component 52, and an air rod 5715 is slidably installed on the free end of the air cylinder 5714, and the free end of the air rod 5715 is connected to the surface of one of the box bodies 524 in the auxiliary component 54.

[0030] Among them, by providing an auxiliary component 54, the box body 524 in the auxiliary component 54 can cooperate with the box body 524 in the filter component 52 to further improve the drying effect of the welding area. At the same time, by starting the gas cylinder 5714, the gas cylinder 5714 drives the gas rod 5715 to move, and the gas rod 5715 drives the box body 524 in the auxiliary component 54 to rotate. The gas cylinder 5714 is staggered through the auxiliary component 54 and the filter component 52, which can continuously ensure the continuity of drying of the welding area.

[0031] In other embodiments, a limiting ring 53 is provided between the filter assembly 52 and the auxiliary assembly 54 , and a pad 56 is installed between the top end of the auxiliary assembly 54 and the inner wall of the pressure plate 51 .

[0032] Among them, by setting a limit ring 53, the setting of the limit ring 53 can effectively prevent the box body 524 from shifting or deforming due to vibration or external force during the welding process, thereby maintaining the stability of the entire structure; the pad 56 usually has good elasticity and wear resistance, which can ensure the close fit between the box body 524 and the pressure plate 51, and reduce the moisture intrusion caused by the gap. During the welding process, the pad 56 can also play a buffering role, reducing the direct impact of the heat and vibration generated by welding on the box body 524 and the pressure plate 51, and extending the service life of the equipment.

[0033] In other embodiments, a temperature control component 44 is provided on the outer surface of the welding main pipe 43, and the temperature control component 44 includes an air pump 441 installed on the outer surface of the welding equipment body 41, and a heating component 442 connected to the output end of the air pump 441 is installed on the outer surface of the welding equipment body 41, and a heat exhaust pipe 443 is installed on the air outlet end of the heating component 442, and a plurality of heat absorbing plates 444 are installed on the outer surface of the welding main pipe 43, and the free end of the heat exhaust pipe 443 is connected to the interior of the heat absorbing plate 444.

[0034] Among them, the air pump 441 and the heating component 442 can be used to introduce heat flow into the heat absorbing plate 444 on the outer surface of the welding main pipe 43. The heat absorbing plate 444 can ensure the stability of the liquid flow inside the welding main pipe 43, and accurately control the temperature of the welding area to ensure that the repair liquid flows stably inside the welding main pipe 43, avoiding condensation and jamming problems caused by too low temperature, thereby significantly improving the accuracy and uniformity of weld repair.

[0035] In other embodiments, the outer surface of the welding main pipe 43 is provided with a symmetrically installed limit plate 446, the interior of the limit plate 446 is connected to the interior of the heat absorbing plate 444, and the limit plate 446 and the input end of the air pump 441 are connected and an air intake pipe 445 is installed.

[0036] Among them, the excess heat flow inside the heat absorption plate 444 can be discharged through the air intake pipe 445, which is convenient for recycling and recycling, avoiding a large amount of heat flow loss.

[0037] In other embodiments, a drying component 57 is provided at the top of the pressing plate 51, including a material storage channel 576 installed on the top of the pressing plate 51, the material storage channel 576 and a first through hole 577 opened on the surface of the pad 56, a second through hole 578 opened on the surface of the box body 524 in the auxiliary component 54, and a third through hole 579 opened on the surface of the box body 524 in the filter component 52 are connected in sequence, an annular tube 574 is installed between the material storage channel 576 and the inner cavity of the limiting plate 446, a second air permeable film 572 is provided on the annular tube 574 near the limiting plate 446, an arc-shaped baffle 573 is installed on the inner wall of the annular tube 574 near the second air permeable film 572, and a partition 575 is installed on the inner wall of the annular tube 574 near the material storage channel 576.

[0038] Among them, through the action of the air cylinder 5714 and the air rod 5715, the box body 524 in the auxiliary component 54 and the box body 524 in the filter component 52 can be overlapped, and the first through hole 577, the second through hole 578, and the third through hole 579 are connected. At this time, the suction pipe 445 can lead out the carbon powder inside the box body 524 in the auxiliary component 54 and the box body 524 in the filter component 52, so that the carbon powder reciprocates inside the annular tube 574, and the carbon powder is dried by the influence of the heat flow inside the suction pipe 445, so as to realize the recycling of the carbon powder; the second breathable film 572 is mainly used to lead out the excess gas discharged from the box body 524 to avoid the backflow of carbon powder and affect the drying effect; by providing the arc baffle 573 and the partition 575, the carbon powder inside the box body 524 can be stably flowed inside the annular tube 574 until the drying is completed, and the carbon powder is redistributed to the inside of the box body 524 through the action of the partition 575.

[0039] In other embodiments, an exhaust component 571 is provided at the bottom end of the pressure plate 51, and the exhaust component 571 includes a circular groove 5712 opened at the bottom end of the pressure plate 51, and a welding groove 7 connected to the welding main pipe 43 is opened in the middle position of the bottom end of the pressure plate 51, and a plurality of guide plates 5713 are installed inside the air guide groove of the welding groove 7 close to the circular groove 5712, and an exhaust branch pipe 5711 is installed in the inner cavity of the circular groove 5712 and the limit plate 446.

[0040] Among them, the welding groove area can be evacuated through the air pump 441 in cooperation with the exhaust branch pipe 5711 to prevent gas from flowing inside, and the gas in the welding area can be effectively discharged, reducing the pores generated during the weld repair process, improving the density and strength of the weld, and ensuring the reliability and durability of the welded joint; the guide plate 5713 can ensure the stability of the gas exhaust direction, avoid backflow and cause pores in the welding, and affect the welding accuracy.

[0041] In other embodiments, a sealing mechanism 6 is provided at the bottom end of the pressure plate 51. The sealing mechanism 6 includes a sealing gasket 62 slidably installed inside the pressure plate 51, and the cross-section of the sealing gasket 62 is conical. A spring 61 is installed between the top end of the sealing gasket 62 and the inner top wall of the pressure plate 51.

[0042] Among them, when the pressure plate 51 contacts the aluminum profile, the sealing gasket 62 can generate pressure on the surface of the aluminum profile through the action of the spring 61, so that the welding area can be tightly sealed during the welding process to prevent gas and impurities from entering the weld, thereby ensuring the smooth progress of welding and the sealing of the weld.

[0043] In other embodiments, it includes a support frame 1, a processing table 2, and a moving component 3. The support frame 1 is used to support the welding equipment body 41, the processing table 2 is fixedly installed on the top of the support frame 1, the moving component 3 is arranged on the top of the support frame 1, and the welding mechanism 4 is arranged on the moving component 3 for movement.

[0044] Among them, the support frame 1 is the basic structure of the entire welding device, which is used to stably support the welding equipment body 41 and other related components to ensure the stability and safety of the entire device, so that the welding process can proceed smoothly; the processing table 2 is fixedly installed on the top of the support frame 1, and is used to place the aluminum profile sheet to be welded. The design of the processing table 2 usually takes into account factors such as material positioning, fixation, and ease of operation to ensure accuracy and efficiency during the welding process; the moving component 3 is arranged on the top of the support frame 1, and it is responsible for driving the welding mechanism 4 to move. By accurately controlling the movement trajectory and speed of the moving component 3, the welding mechanism 4 can be accurately positioned and moved on the processing table 2, thereby completing the welding work of the weld; the welding mechanism 4 spot welds the gap on the surface of the aluminum profile through the welding main pipe 43, and melts the welding wire through heat energy to repair it to the surface of the gap, thereby ensuring the integrity of the surface of the aluminum profile.

[0045] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A welding device for a thin aluminum profile weld, comprising a welding mechanism (4), characterized in that: The welding mechanism (4) comprises a welding device body (41), the bottom end of the welding device body (41) is connected to a material injection hopper (42), the bottom end of the material injection hopper (42) is connected to a welding main pipe (43), and the welding main pipe (43) is electrically connected to the welding device body (41) via an external power supply; A protection mechanism (5) is provided at the bottom end of the welding main pipe (43), wherein the protection mechanism (5) comprises a pressing plate (51) installed at the bottom end of the welding main pipe (43), and a filter assembly (52) is provided inside the pressing plate (51); The filter assembly (52) comprises a box body (524) installed inside the pressing plate (51), three box bodies (524) filled with dry carbon powder are circumferentially installed inside the pressing plate (51), the three fan-shaped box bodies (524) are connected in series via a connecting pipe (55), a top plate (521) is installed at the top end of the box body (524), a vent hole is opened at the bottom end of the top plate (521), and the inner bottom wall of the box body (524) is supported by a plurality of pressure rods (523) and is installed with a first ventilating film (522); A drying component (57) is provided at the top of the pressing plate (51), comprising a material storage channel (576) installed at the top of the pressing plate (51); the material storage channel (576) is connected in sequence to a first through hole (577) opened on the surface of the pad (56), a second through hole (578) opened on the surface of the box body (524) in the auxiliary component (54), and a third through hole (579) opened on the surface of the box body (524) in the filter component (52); an annular tube (574) is installed in communication between the material storage channel (576) and the inner cavity of the limiting plate (446); a second air permeable film (572) is provided on the annular tube (574) near the limiting plate (446); an arc-shaped baffle (573) is installed on the inner wall of the annular tube (574) near the second air permeable film (572); and a partition plate (575) is installed on the inner wall of the annular tube (574) near the material storage channel (576).

2. The aluminum profile sheet welding device according to claim 1, characterized in that: An auxiliary component (54) is arranged inside the pressing plate (51); the auxiliary component (54) and the filter component (52) both include three box bodies (524) installed thereon; the auxiliary component (54) is rotatably mounted on the top of the filter component (52); the box bodies (524) in the auxiliary component (54) and the box bodies (524) in the filter component (52) are staggeredly installed inside the pressing plate (51).

3. The device for welding a weld seam of an aluminum profile sheet according to claim 2, characterized in that: A limiting ring (53) is provided between the filtering component (52) and the auxiliary component (54). A backing plate (56) is installed between the top end of the auxiliary component (54) and the inner wall of the pressing plate (51).

4. The device for welding a weld seam of an aluminum profile sheet according to claim 2, characterized in that: An air cylinder (5714) is installed on the outer surface of one of the boxes (524) in the filter assembly (52), and an air rod (5715) is slidably installed on the free end of the air cylinder (5714), and the free end of the air rod (5715) is connected to the surface of one of the boxes (524) in the auxiliary assembly (54).

5. The device for welding seam of aluminum profile sheet according to claim 3, characterized in that: The outer surface of the welding main pipe (43) is provided with a temperature control component (44), the temperature control component (44) comprises an air pump (441) mounted on the outer surface of the welding equipment body (41), the outer surface of the welding equipment body (41) is provided with a heating component (442) connected to the output end of the air pump (441), the air outlet end of the heating component (442) is connected to a heat exhaust pipe (443), the outer surface of the welding main pipe (43) is provided with a plurality of heat absorbing plates (444), the free ends of the heat exhaust pipes (443) are connected to the interior of the heat absorbing plates (444).

6. The aluminum profile sheet welding device according to claim 1, characterized in that: The outer surface of the welding main pipe (43) is provided with a symmetrically installed limit plate (446), the interior of the limit plate (446) is connected to the interior of the heat absorbing plate (444), and the limit plate (446) is connected to the input end of the air pump (441) and an air suction pipe (445) is installed.

7. The aluminum profile sheet welding device according to claim 1, characterized in that: An exhaust component (571) is provided at the bottom end of the pressing plate (51), and the exhaust component (571) comprises a circular groove (5712) provided at the bottom end of the pressing plate (51); a welding groove (7) in communication with the welding main pipe (43) is provided at the middle position of the bottom end of the pressing plate (51); a plurality of guide plates (5713) are installed inside the air guide groove of the welding groove (7) close to the circular groove (5712); and an exhaust branch pipe (5711) is installed in communication with the inner cavity of the circular groove (5712) and the limiting plate (446).

8. The device for welding seam of aluminum profile sheet according to claim 1, characterized in that: A sealing mechanism (6) is provided at the bottom end of the pressure plate (51), and the sealing mechanism (6) comprises a sealing gasket (62) slidably mounted inside the pressure plate (51), and the cross section of the sealing gasket (62) is conical, and a spring (61) is installed between the top end of the sealing gasket (62) and the inner top wall of the pressure plate (51).

9. The aluminum profile sheet welding device according to claim 1, characterized in that: The invention comprises a support frame (1), a processing table (2), and a moving assembly (3); the support frame (1) is used to support a welding device body (41); the processing table (2) is fixedly mounted on the top of the support frame (1); the moving assembly (3) is arranged on the top of the support frame (1); and the welding mechanism (4) is arranged on the moving assembly (3) for movement.

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