Aluminum alloy door and window welding device with clamping function

Abstract

The invention relates to the technical field of door and window welding, in particular to an aluminum alloy door and window welding device with a clamping function, which comprises a welding table, a welding arm is fixed on the top surface of the welding table, two fixed boxes are fixed on the top surface of the welding table, and a support frame is jointly and rotationally connected between the two fixed boxes; a plurality of clamping pieces are fixed to the surface of the supporting frame, a mounting box is arranged between every two adjacent clamping pieces, the mounting boxes are fixed to the supporting frame, extrusion rollers are arranged to follow the welding position in real time, the position of a welding seam is pressed and positioned in advance, and the situation that the welding quality is affected due to the fact that materials near the welding seam warp or slightly move is avoided; and when the extrusion rollers roll, the two sides of the extrusion position are synchronously pressed, and the stability of the molten pool is maintained.

Description

Technical Field

[0001] The present invention relates to the field of door and window welding, and particularly to an aluminum alloy door and window welding device with a clamping function. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.

[0003] In the welding operation of aluminum alloy door and window frame bars, the currently commonly used positioning method mainly relies on simple extrusion fixation to determine the position of the bars. Although this method can initially fix the workpiece before welding, it cannot cope with the dynamic changes caused by heat during the welding process.

[0004] Aluminum alloy materials have strong thermal conductivity. During welding, the temperature in the weld area will rise sharply, and the surrounding materials will expand due to heat and generate stress. When cooling, deformation will occur due to shrinkage. The traditional positioning device only provides static initial constraints. When the welding heat affects the materials near the weld to warp or have small displacements, it cannot adjust the constraint force and position in time, resulting in the weld position being prone to deviate from the expected value and affecting the welding accuracy. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose an aluminum alloy door and window welding device with a clamping function.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: an aluminum alloy door and window welding device with a clamping function, including a welding table, a welding arm is fixed on the top surface of the welding table, two fixed boxes are fixed on the top surface of the welding table, a support frame is rotatably connected between the two fixed boxes, a plurality of clamping members are fixed on the surface of the support frame, an installation box is arranged between adjacent clamping members, the installation box is fixed on the support frame, a first electric push rod is fixed on the surface of the installation box, a connecting frame is fixed at the end of the first electric push rod, a moving block is vertically slidably connected to the connecting frame, a second electric push rod is fixed on the top surface of the moving block, the second electric push rod is fixed on the connecting frame, two guide rail rods are fixed on the side wall of the moving block, sliders are slidably connected to the guide rail rods, a driving component is arranged on one side of each slider, the driving component is used to drive the slider to slide along the guide rail rod, an extrusion roller is rotatably connected between the two sliders, and an airbag extrusion component is arranged at the bottom of the guide rail rod. When the extrusion roller moves, the airbag extrusion component is used to synchronously press both sides of the extrusion position of the extrusion roller.

[0007] Preferably, the airbag extrusion assembly includes a first airbag, which is fixed in the guide groove of the guide rail rod. The first airbag is arranged at the bottom of the slider. A plurality of mounting grooves are formed at the bottom of the guide rail rod. A plurality of second airbags are fixed on the bottom surface of the first airbag, and the second airbags are inserted into the corresponding mounting grooves. A plurality of air storage cavities are arranged inside the first airbag, and a regulating valve is fixedly connected between the air storage cavity and the second airbag.

[0008] Preferably, the driving assembly includes a motor, which is fixed on the side wall of the guide rail rod. The end of the output shaft of the motor is fixed with a screw rod, and the end of the screw rod is rotatably connected to the guide rail rod. A driving block is threadedly connected to the screw rod, and the driving block is slidably connected in the guide groove of the guide rail rod. The driving block and the slider are connected by a connecting assembly.

[0009] Preferably, the connecting assembly includes a sliding rod, the top end of the sliding rod is fixed on the bottom surface of the driving block, a corresponding insertion slot is formed on the surface of the slider, and the bottom end of the sliding rod is inserted into the insertion slot. A first spring is fixed between the slider and the driving block.

[0010] Preferably, a groove is formed on the bottom surface of the slider, and a rigid plate and a flexible plate are fixed at the notch position of the groove. A movable plate is arranged on the top surface of the rigid plate, and a third electric push rod is fixed on the inner wall of the groove. The third electric push rod is connected to the movable plate.

[0011] Preferably, the movable end of the third electric push rod is slidably connected to the movable plate. A guiding pin is fixed on the side wall of the movable plate, and a guiding groove is formed on the inner wall of the groove. The guiding groove includes a first horizontal groove, a second horizontal groove, a vertical groove and an inclined groove. The second horizontal groove is arranged above the first horizontal groove. The vertical groove and the inclined groove are arranged on both sides of the first horizontal groove, and the top ends of the vertical groove and the inclined groove are communicated with the second horizontal groove. The bottom ends of the vertical groove and the inclined groove are communicated with the first horizontal groove. A limiting hole is formed on the inner wall of the first horizontal groove, a limiting block is inserted into the limiting hole, an inclined surface is formed on one side of the limiting block close to the guiding pin, and a second spring is fixed between the limiting block and the limiting hole.

[0012] Preferably, a fourth electric push rod is fixed on the support frame, a connecting seat is fixed at the end of the fourth electric push rod, a support roller is rotatably connected to the connecting seat, a friction plate and an anti-sticking plate are fixed on the surface of the support roller, and a switching assembly is fixed on the side wall of the support roller. The switching assembly is used to make the friction plate and the anti-sticking plate contact the welded part respectively.

[0013] Preferably, the switching component includes a rotating disk fixed on the side wall of the supporting roller. Two switching holes are formed on the surface of the rotating disk. An installation cylinder is fixed on the surface of the connecting seat. A positioning pin is inserted into the installation cylinder. A third spring is fixed between the positioning pin and the inner wall of the installation cylinder. An electromagnet is fixed on the inner wall of the installation cylinder. The positioning pin is made of ferromagnetic material. A plurality of insertion holes are formed on one side of the switching hole near the friction plate.

[0014] Preferably, a liquid storage tank is formed on the surface of the supporting roller, which is arranged between the friction plate and the anti-sticking plate. A liquid storage box is fixed on the inner wall of the liquid storage tank. A plurality of liquid inlet grooves are formed on the surface of the liquid storage box.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] First, by arranging the extrusion roller to follow the welding position in real time, the welding seam position is tightly positioned in advance, avoiding warping or slight displacement of the materials near the welding seam due to the influence of welding heat, which affects the welding quality. When the extrusion roller rolls, both sides of the extrusion position are tightly pressed synchronously. Therefore, after the extrusion roller is removed, the extrusion state on both sides of the welding seam is always maintained, maintaining the stability of the molten pool, and avoiding the situation that the welding seam position loses the extrusion force after the extrusion roller is removed, resulting in slight deformation and affecting the stability of the molten pool. This is beneficial to ensuring the welding accuracy.

[0017] Second, the edges of some aluminum alloy door and window frames gradually transition from a plane to an arc surface. By improving the slider, when the slider moves to the arc surface area, the second airbag expands more, adapting to the arc surface, ensuring the extrusion force on the arc surface, and avoiding the situation that the extrusion force is insufficient, resulting in micro-offset of the welding seam position and affecting the subsequent welding quality.

[0018] Third, by arranging the supporting roller, a state of synchronous double-roller tight pressing is formed, thereby forming a symmetrical clamping force, enabling the welded part to receive uniform normal pressure in the welding area, ensuring that the materials on both sides of the welding seam are closely attached, reducing defects such as pores and lack of fusion, and improving the strength and sealing performance of the welding seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the connecting frame, moving block, and guide rail rod structure of the present invention Figure 1 。

[0021] Figure 3 It is a schematic diagram of the connecting frame, moving block, and guide rail rod structure of the present invention Figure 2 。

[0022] Figure 4Schematic cross-sectional structure diagram of the guide rail rod of the present invention.

[0023] Figure 5 Schematic cross-sectional structure of the slider of the present invention Figure 1 .

[0024] Figure 6 Schematic cross-sectional structure of the slider of the present invention Figure 2 .

[0025] Figure 7 Schematic cross-sectional structure of the slider of the present invention Figure 3 .

[0026] Figure 8 Schematic structure diagram of the support roller of the present invention.

[0027] Figure 9 Schematic cross-sectional structure diagram of the installation cylinder of the present invention.

[0028] In the figure: 1, welding table; 2, welding arm; 3, fixed box; 4, support frame; 5, clamping member; 6, installation box; 7, first electric push rod; 8, connecting frame; 9, moving block; 10, second electric push rod; 11, guide rail rod; 12, slider; 13, extrusion roller; 14, first airbag; 15, installation groove; 16, second airbag; 17, air storage cavity; 18, regulating valve; 19, motor; 20, screw; 21, driving block; 22, sliding rod; 23, slot; 24, first spring; 25, rigid plate; 26, flexible plate; 27, movable plate; 28, third electric push rod; 29, guiding pin; 30, guiding groove; 31, first transverse groove; 32, second transverse groove; 33, vertical groove; 34, inclined groove; 35, limiting hole; 36, limiting block; 37, inclined plane; 38, second spring; 39, fourth electric push rod; 40, connecting seat; 41, support roller; 42, friction plate; 43, anti-sticking plate; 44, rotating disc; 45, switching hole; 46, installation cylinder; 47, positioning pin; 48, third spring; 49, electromagnet; 50, insertion hole; 51, liquid storage tank; 52, liquid storage box; 53, liquid inlet groove; 54, groove. Detailed implementation manners

[0029] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0030] Such as Figures 1 to 9An aluminum alloy door and window welding device with a clamping function is shown, including a welding table 1. A welding arm 2 is fixed on the top surface of the welding table 1. Two fixed boxes 3 are fixed on the top surface of the welding table 1. A support frame 4 is rotatably connected between the two fixed boxes 3. A plurality of clamping members 5 are fixed on the surface of the support frame 4. An installation box 6 is arranged between adjacent clamping members 5. The installation box 6 is fixed on the support frame 4. A first electric push rod 7 is fixed on the surface of the installation box 6. A connecting frame 8 is fixed at the end of the first electric push rod 7. A moving block 9 is vertically slidably connected to the connecting frame 8. A second electric push rod 10 is fixed on the top surface of the moving block 9. The second electric push rod 10 is fixed on the connecting frame 8. Two guide rail rods 11 are fixed on the side wall of the moving block 9. Sliders 12 are slidably connected to the guide rail rods 11. A driving assembly is arranged on one side of the slider 12. The driving assembly is used to drive the slider 12 to slide along the guide rail rod 11. An extrusion roller 13 is rotatably connected between the two sliders 12. An airbag extrusion assembly is arranged at the bottom of the guide rail rod 11. When the extrusion roller 13 moves, the airbag extrusion assembly is used to synchronously press both sides of the extrusion position of the extrusion roller 13.

[0031] Specifically, before welding, the frame bars of the aluminum alloy door and window are clamped and positioned by the clamping members 5. At the connection seam between the frame bars, welding is performed by the welding head on the welding arm 2. Before welding, the extrusion roller 13 is pushed towards the position close to the weld seam by the first electric push rod 7, and the extrusion position of the extrusion roller 13 is adjusted by the second electric push rod 10 to ensure the extrusion effect. During the welding process, the extrusion roller 13 performs rolling extrusion on the front side in the welding direction. On the one hand, it can follow the welding position in real time, pre-press and position the weld seam position in advance, avoiding warping or small displacements of the materials near the weld seam, which may affect the welding quality. On the other hand, synchronous pressing helps to extrude the gas and impurities in the weld seam, making the weld metal more dense and improving the strength and corrosion resistance of the weld seam. Further, for some occasions with high requirements for weld quality, such as high-grade building doors and windows that require the weld surface to be smooth, without pores, slag inclusions and other defects, the rolling extrusion of the extrusion roller 13 can improve the fluidity and density of the weld metal and ensure the welding quality. And an airbag extrusion assembly is arranged at the bottom of the guide rail rods 11 on both sides of the weld seam, which can synchronously press both sides of the extrusion position when the extrusion roller 13 rolls, so as to always maintain the extrusion state on both sides of the weld seam after the extrusion roller 13 is removed, maintain the stability of the molten pool, and avoid the situation that the weld seam position loses the extrusion force after the extrusion roller 13 is removed, resulting in slight deformation and affecting the stability of the molten pool, which is conducive to ensuring the welding accuracy.

[0032] As a further embodiment of the present invention, the airbag extrusion assembly includes a first airbag 14, the first airbag 14 is fixed in the guide groove of the guide rail rod 11, the first airbag 14 is arranged at the bottom of the slider 12, a plurality of mounting grooves 15 are formed at the bottom of the guide rail rod 11, a plurality of second airbags 16 are fixed on the bottom surface of the first airbag 14, the second airbags 16 are inserted into the corresponding mounting grooves 15, a plurality of air storage cavities 17 are arranged inside the first airbag 14, and a regulating valve 18 is fixedly communicated between the air storage cavity 17 and the second airbag 16.

[0033] Specifically, the regulating valve 18 is an electric control valve, which is in a one-way blocking state under normal conditions. During the movement of the extrusion roller 13, the slider 12 slides on the top surface of the first airbag 14, slidingly extruding the first airbag 14. During the sliding process, the gas in the air storage cavity 17 can be sequentially squeezed into the second airbag 16 through the regulating valve 18, so that the second airbags 16 are inflated in sequence and are in close contact with the surface of the welded part, thereby pressing the positions on both sides of the weld. On the one hand, the stability of the molten pool can be maintained and the welding quality can be guaranteed. On the other hand, the middle part of the weld is first pressed by the extrusion roller 13, and then the two sides of the weld are pressed, which can also avoid the uneven stress distribution around the weld during the pressing process, resulting in local stress concentration. Synchronous pressing can make the weld and its two sides more uniform in force, reduce the stress concentration phenomenon, and reduce the risk of defects such as welding cracks.

[0034] As a further embodiment of the present invention, the driving assembly includes a motor 19, the motor 19 is fixed on the side wall of the guide rail rod 11, the end of the output shaft of the motor 19 is fixed with a screw rod 20, the end of the screw rod 20 is rotatably connected to the guide rail rod 11, a driving block 21 is threadedly connected to the screw rod 20, the driving block 21 is slidably connected in the guide groove of the guide rail rod 11, and the driving block 21 and the slider 12 are connected through a connecting component.

[0035] Specifically, by starting the motor 19, the screw rod 20 can be driven to rotate. Since the driving block 21 is threadedly connected to the screw rod 20, under the driving action of the screw rod 20, the driving block 21 can slide along the direction of the guide groove. The driving block 21 and the slider 12 are connected through a connecting component. Therefore, when the driving block 21 moves, the slider 12 can be driven to move synchronously to complete the driving function.

[0036] As a further embodiment of the present invention, the connecting component includes a slide rod 22, the top end of the slide rod 22 is fixed on the bottom surface of the driving block 21, a corresponding slot 23 is formed on the surface of the slider 12, the bottom end of the slide rod 22 is inserted into the slot 23, and a first spring 24 is fixed between the slider 12 and the driving block 21.

[0037] Specifically, the edge of some aluminum alloy door and window frames gradually transitions from a plane to a curved surface. When the second airbag 16 is located in the curved surface area, the distance between the bottom surface of the second airbag 16 and the aluminum alloy door and window frame will gradually increase. Since the slider 12 moves in a straight line and the amount of gas pushed into the second airbag 16 by it is fixed, it may lead to insufficient extrusion force on the aluminum alloy door and window frame after the second airbag 16 in the curved surface area is inflated. The present invention can solve the above problems. The specific working method is as follows. During the movement of the driving block 21, it can drive the sliding rod 22 to move synchronously. The sliding rod 22 drives the slider 12 to move. The slider 12 can move up and down along the sliding rod 22. Under the pushing action of the first spring 24, the slider 12 always has a tendency to move downward. The slider 12 is connected to the extrusion roller 13, so that the extrusion roller 13 can closely adhere to the surface of the aluminum alloy door and window frame. When the extrusion roller 13 moves to a position with a curvature, under the pushing action of the first spring 24, the extrusion roller 13 can move downward to adapt to the arc surface, and the slider 12 moves downward synchronously, thereby deepening the extrusion distance of the first airbag 14, further increasing the extrusion degree, so that more gas can be squeezed into the second airbag 16, making the expansion degree of the second airbag 16 larger, adapting to the arc surface, ensuring the extrusion force on the arc surface, and avoiding the situation that insufficient extrusion force causes micro-offset at the weld position and affects the subsequent welding quality.

[0038] As a further embodiment of the present invention, a groove 54 is formed on the bottom surface of the slider 12. A rigid plate 25 and a flexible plate 26 are fixed at the notch position of the groove 54. A movable plate 27 is arranged on the top surface of the rigid plate 25. A third electric push rod 28 is fixed on the inner wall of the groove 54, and the third electric push rod 28 is connected to the movable plate 27.

[0039] Specifically, when the slider 12 presses against the first airbag 14, since there are multiple independent air storage chambers 17 inside the first airbag 14, to ensure that the slider 12 can stably squeeze the gas in a single air storage chamber 17 into the corresponding second airbag 16, the lateral dimension of the contact part between the slider 12 and the air storage chamber 17 needs to be slightly larger than the lateral dimension of a single air storage chamber 17 to form an effective sealing and squeezing surface. However, this size design causes the coverage range of the slider 12 during movement to possibly span two adjacent air storage chambers 17 simultaneously. When the slider 12 moves from the flat surface to the arc surface, the previous second airbag 16 is in the flat surface area, and the subsequent second airbag 16 is in the arc surface area. At this time, it is difficult for the second airbag 16 in the flat surface area to continue expanding. If the slider 12 has not completely separated from the air storage chamber 17 of the second airbag 16 in the flat surface area, under the blocking effect of this air storage chamber 17, the resistance to the downward movement of the slider 12 will increase, making it difficult to effectively squeeze the second airbag 16 located on the arc surface in a timely manner. As a result, the squeezing force on the second airbag 16 located on the arc surface is insufficient, affecting the pressing effect and further affecting the subsequent welding quality. The present invention can solve the above problems, and the specific working method is as follows. A rigid plate 25 and a flexible plate 26 are provided at the bottom of the slider 12. The rigid plate 25 is located on the front side in the moving direction. When the rigid plate 25 moves forward, it can squeeze the air storage chamber 17. The movable plate 27 is pushed by the third electric push rod 28 to move above the flexible plate 26, preventing the flexible plate 26 from deforming, thereby ensuring that there is sufficient squeezing dimension at the bottom of the slider 12. When the squeezing roller 13 moves to the arc surface position, if the slider 12 is blocked by the previous air storage chamber 17 and is difficult to move downward, it will cause the squeezing roller 13 to be difficult to closely adhere to the surface of the welded part. The squeezing roller 13 is in a suspended state and will not rotate during movement. By installing a micro angle sensor on the rotating shaft of the squeezing roller 13, the rotation state of the squeezing roller 13 is detected by the angle sensor to determine whether it is closely adhered to the surface of the welded part. When it is detected that the squeezing roller 13 is not closely adhered to the welding surface, the third electric push rod 28 is activated to pull the movable plate 27 to contract, thereby canceling the blocking of the flexible plate 26. At this time, under the push of the first spring 24, the slider 12 can move downward, and the flexible plate 26 can deform to make way, thereby reducing the adverse impact of the coverage range of the slider 12 spanning two adjacent air storage chambers 17 simultaneously on the pressing effect of the second airbag 16.

[0040] As a further embodiment of the present invention, the movable end of the third electric push rod 28 is slidably connected to the movable plate 27. A guiding pin 29 is fixed on the side wall of the movable plate 27, and a guiding groove 30 is formed on the inner wall of the groove 54. The guiding groove 30 includes a first horizontal groove 31, a second horizontal groove 32, a vertical groove 33 and an inclined groove 34. The second horizontal groove 32 is arranged above the first horizontal groove 31. The vertical groove 33 and the inclined groove 34 are arranged on both sides of the first horizontal groove 31. The top ends of the vertical groove 33 and the inclined groove 34 are communicated with the second horizontal groove 32, and the bottom ends of the vertical groove 33 and the inclined groove 34 are communicated with the first horizontal groove 31. A limiting hole 35 is formed on the inner wall of the first horizontal groove 31, a limiting block 36 is inserted into the limiting hole 35, an inclined surface 37 is formed on the side of the limiting block 36 close to the guiding pin 29, and a second spring 38 is fixed between the limiting block 36 and the limiting hole 35.

[0041] Specifically, during the process of the third electric push rod 28 pushing the movable plate 27 to move, the guiding pin 29 moves along with the movable plate 27. When the guiding pin 29 passes through the position of the limiting hole 35, it contacts the inclined surface 37 of the limiting block 36. At this time, under the guiding action of the inclined surface 37, the guiding pin 29 can squeeze the limiting block 36 into the inside of the limiting hole 35, so as to pass through the position of the limiting hole 35 until the limiting block 36 moves to the end of the first horizontal groove 31. At this time, the movable plate 27 can block the flexible plate 26 and prevent it from deforming to make way. Further, when it is necessary for the flexible plate 26 to make way, the third electric push rod 28 is used to pull the movable plate 27 to reset. At this time, under the blocking action of the limiting block 36, the guiding block can move along the inclined groove 34 into the inside of the second horizontal groove 32, so as to quickly generate a making-way space between the movable plate 27 and the flexible plate 26, enabling the flexible plate 26 to make way in time.

[0042] As a further embodiment of the present invention, a fourth electric push rod 39 is fixed on the support frame 4. The end of the fourth electric push rod 39 is fixed with a connecting seat 40. A support roller 41 is rotatably connected to the connecting seat 40. Friction sheets 42 and anti-sticking sheets 43 are fixed on the surface of the support roller 41. A switching assembly is fixed on the side wall of the support roller 41, and the switching assembly is used to make the friction sheets 42 and the anti-sticking sheets 43 contact the welded parts respectively.

[0043] Specifically, by arranging a support roller 41 at the bottom of the extrusion roller 13 and pulling the support roller 41 through the fourth electric push rod 39, the support roller 41 can move synchronously with the extrusion roller 13. The synchronous pressing of the upper and lower double rollers can form a symmetric clamping force, enabling the welded part to receive a uniform positive pressure in the welding area, ensuring that the materials on both sides of the weld are closely attached, reducing defects such as pores and lack of fusion, improving the strength and sealing performance of the weld. And because the support roller 41 is located below the weld, during the support process, the molten welding liquid in the molten pool during the welding process may come into contact with the surface of the support roller 41. When the welding liquid solidifies, it may cause adhesion between the support roller 41 and the welded part. To avoid this adhesion, the traditional anti-sticking layer has relatively low wear resistance. During the movement of the support roller 41 below the welded part, the anti-sticking layer may be worn. In the present invention, a friction plate 42 and an anti-sticking plate 43 are arranged on the surface of the support roller 41. During the movement and support of the support roller 41, the friction plate 42 contacts the bottom of the welded part. When moving to the end of the weld, at this time, the anti-sticking plate 43 is switched to contact the welded part through the switching component, thereby avoiding wear during the movement and support process and ensuring the anti-sticking function.

[0044] As a further implementation scheme of the present invention, the switching component includes a rotating disk 44. The rotating disk 44 is fixed on the side wall of the support roller 41. Two switching holes 45 are formed on the surface of the rotating disk 44. An installation cylinder 46 is fixed on the surface of the connecting seat 40. A positioning pin 47 is inserted into the installation cylinder 46. A third spring 48 is fixed between the positioning pin 47 and the inner wall of the installation cylinder 46. An electromagnet 49 is fixed on the inner wall of the installation cylinder 46. The positioning pin 47 is made of ferromagnetic material. A plurality of insertion holes 50 are formed on one side of the switching hole 45 close to the friction plate 42.

[0045] Specifically, in the initial state, under the elastic force of the third spring 48, the positioning pin 47 is inserted into the switching hole 45 near the friction plate 42 to limit the rotation disc 44. At this time, the friction plate 42 contacts the welded part. As the support roller 41 moves towards the end position of the weld seam, by activating the electromagnet 49, the positioning pin 47 can be sucked into the installation cylinder 46, causing the positioning pin 47 to disengage from the switching hole 45. At this time, the support roller 41 continues to move under the welded part, and under the friction action, the support roller 41 can rotate until the positioning pin 47 moves to the position of another switching hole 45. At this time, the suction effect of the electromagnet 49 on the positioning pin 47 is cancelled, and under the elastic force of the third spring 48, the positioning pin 47 can be pushed into the switching hole 45, so that the anti-sticking plate 43 can stably support the welded part and complete the switching function. Further, when the weld seam is long, the same position of the friction plate 42 is in a friction state with the welded part for a long time, resulting in a temperature rise. Since the aluminum alloy material has fast heat conduction and significant thermal expansion characteristics, when the bottom of the weld seam continues to heat up, the local high temperature will cause the material to expand more, while the base material in the surrounding low-temperature area will form a constraint on it, forming a complex thermal stress field in the weld seam area. This uneven thermal distribution will cause greater shrinkage stress in the weld seam during the cooling process, easily causing overall warping or local deformation of the weld seam, resulting in a shift in the relative positions of the frame members. To solve the above problems, the present invention has a plurality of insertion holes 50 on the surface of the rotation disc 44, and by controlling the positioning pin 47 to be inserted into each insertion hole 50 in sequence, the contact position between the friction plate 42 and the welded part is switched, avoiding the situation where the same position of the friction plate 42 is in a friction state with the welded part for a long time, resulting in a continuous rise in the temperature at the bottom of the weld seam and affecting the subsequent welding quality.

[0046] As a further implementation of the present invention, a liquid storage tank 51 is provided on the surface of the support roller 41. The liquid storage tank 51 is arranged between the friction plate 42 and the anti-sticking plate 43, and a liquid storage box 52 is fixed on the inner wall of the liquid storage tank 51. A plurality of liquid inlet grooves 53 are provided on the surface of the liquid storage box 52.

[0047] Specifically, when the welding liquid in the molten pool leaks, it may flow downward along the anti-sticking plate 43, contaminating the friction plate 42 and affecting the subsequent use of the friction plate 42. The present invention separates the friction plate 42 and the anti-sticking plate 43 by providing the liquid storage box 52, thus avoiding the situation where the welding liquid flows downward along the anti-sticking plate 43 and contaminates the friction plate 42.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A welding device for aluminum alloy doors and windows with a clamping function, comprising a welding platform (1), a welding arm (2) being fixed on the top surface of the welding platform (1), two fixing boxes (3) being fixed on the top surface of the welding platform (1), a support frame (4) being connected to the two fixing boxes (3) for co-rotation, a plurality of clamping members (5) being fixed on the surface of the support frame (4), characterized in that: An installation box (6) is provided between adjacent clamping members (5), the installation box (6) is fixed on the support frame (4), a first electric push rod (7) is fixed on the surface of the installation box (6), and a connecting frame (8) is fixed at the end of the first electric push rod (7); A moving block (9) is vertically slidably connected to the connecting frame (8), a second electric push rod (10) is fixed on the top surface of the moving block (9), and the second electric push rod (10) is fixed on the connecting frame (8); two guide rails (11) are fixed on the side wall of the moving block (9), and a slider (12) is slidably connected to each of the guide rails (11); a driving component is provided on one side of the slider (12), and the driving component is used to drive the slider (12) to slide along the guide rail (11); and a squeezing roller (13) is connected between the two sliders (12) for common rotation; An airbag squeezing assembly is arranged at the bottom of the guide rail rod (11), and when the squeezing roller (13) moves, the airbag squeezing assembly is used to synchronously press the two sides of the squeezing position of the squeezing roller (13).

2. The aluminum alloy door and window welding device with clamping function according to claim 1 is characterized in that: The airbag extrusion assembly comprises a first airbag (14), the first airbag (14) being fixed in a guide groove of a guide rail rod (11), the first airbag (14) being arranged at the bottom of a slider (12), the bottom of the guide rail rod (11) being provided with a plurality of mounting grooves (15), a plurality of second airbags (16) being fixed on the bottom surface of the first airbag (14), the second airbags (16) being inserted into the corresponding mounting grooves (15), a plurality of air storage cavities (17) being arranged inside the first airbag (14), and a regulating valve (18) being fixedly connected between the air storage cavities (17) and the second airbags (16).

3. The aluminum alloy door and window welding device with clamping function according to claim 2 is characterized in that: The driving assembly comprises a motor (19), wherein the motor (19) is fixed on a side wall of the guide rail rod (11), a screw rod (20) is fixed at the end of the output shaft of the motor (19), the end of the screw rod (20) is rotatably connected to the guide rail rod (11), a driving block (21) is threadedly connected to the screw rod (20), the driving block (21) is slidably connected in a guide groove of the guide rail rod (11), and the driving block (21) is connected to the slider (12) via a connecting assembly.

4. The aluminum alloy door and window welding device with clamping function according to claim 3 is characterized in that: The connecting assembly comprises a sliding rod (22), the top end of the sliding rod (22) is fixed on the bottom surface of the driving block (21), a corresponding slot (23) is provided on the surface of the sliding block (12), the bottom end of the sliding rod (22) is inserted into the slot (23), and a first spring (24) is fixed between the sliding block (12) and the driving block (21).

5. The aluminum alloy door and window welding device with clamping function according to claim 4 is characterized in that: A groove (54) is provided on the bottom surface of the sliding block (12); a rigid plate (25) and a flexible plate (26) are fixed at the notch position of the groove (54); a movable plate (27) is provided on the top surface of the rigid plate (25); a third electric push rod (28) is fixed on the inner wall of the groove (54); and the third electric push rod (28) is connected to the movable plate (27).

6. The aluminum alloy door and window welding device with clamping function according to claim 5, characterized in that: The movable end of the third electric push rod (28) is slidably connected to the movable plate (27); a guide pin (29) is fixed on the side wall of the movable plate (27); a guide groove (30) is provided on the inner wall of the groove (54); the guide groove (30) comprises a first transverse groove (31), a second transverse groove (32), a vertical groove (33) and an oblique groove (34); the second transverse groove (32) is arranged above the first transverse groove (31); the vertical groove (33) and the oblique groove (34) are arranged on the first transverse groove (31); The top ends of the vertical groove (33) and the oblique groove (34) are connected to the second transverse groove (32), and the bottom ends of the vertical groove (33) and the oblique groove (34) are connected to the first transverse groove (31). A limiting hole (35) is provided on the inner wall of the first transverse groove (31), a limiting block (36) is inserted into the limiting hole (35), a side of the limiting block (36) close to the guide pin (29) is provided with an inclined surface (37), and a second spring (38) is fixed between the limiting block (36) and the limiting hole (35).

7. The aluminum alloy door and window welding device with clamping function according to claim 1 is characterized in that: A fourth electric push rod (39) is fixed to the support frame (4), a connecting seat (40) is fixed to the end of the fourth electric push rod (39), a supporting roller (41) is rotatably connected to the connecting seat (40), a friction plate (42) and an anti-sticking plate (43) are fixed to the surface of the supporting roller (41), and a switching component is fixed to the side wall of the supporting roller (41), and the switching component is used to make the friction plate (42) and the anti-sticking plate (43) contact the weldment respectively.

8. The aluminum alloy door and window welding device with clamping function according to claim 7, characterized in that: The switching assembly comprises a rotating disk (44), the rotating disk (44) being fixed on the side wall of the supporting roller (41), the surface of the rotating disk (44) being provided with two switching holes (45), the surface of the connecting seat (40) being provided with a mounting tube (46), a positioning pin (47) being inserted into the mounting tube (46), a third spring (48) being fixed between the positioning pin (47) and the inner wall of the mounting tube (46), an electromagnet (49) being fixed on the inner wall of the mounting tube (46), the positioning pin (47) being made of ferromagnetic material, and a plurality of insertion holes (50) being provided on one side of the switching hole (45) close to the friction plate (42).

9. The aluminum alloy door and window welding device with clamping function according to claim 8, characterized in that: A liquid storage groove (51) is provided on the surface of the support roller (41), and the liquid storage groove (51) is arranged between the friction plate (42) and the anti-sticking plate (43). A liquid storage box (52) is fixed on the inner wall of the liquid storage groove (51), and a plurality of liquid inlet grooves (53) are provided on the surface of the liquid storage box (52).

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