Welding fixing device for four-corner welding nut and welding process of welding fixing device

Abstract

The invention discloses a welding fixing device for a quadrangular welding nut and a welding process of the welding fixing device, and relates to the technical field of welding fixing supports. The welding fixing device comprises a transverse vibration sliding frame, a longitudinal sliding frame is slidably connected into the transverse vibration sliding frame, the longitudinal sliding frame is slidably connected with the transverse vibration sliding frame through a hydraulic cylinder, and the welding fixing device is characterized in that the bottom of the transverse vibration sliding frame is fixedly connected with a vibration motor; the interior of the longitudinal sliding frame is slidably connected with a feeding stabilizing mechanism. According to the welding fixing device for the four-corner welding nut and the welding technology of the welding fixing device, the feeding stabilizing mechanism, the welding auxiliary mechanism and the plate body displacement mechanism are arranged, so that the nut position is stably fixed through the device, and the phenomenon of insufficient welding of the device is reduced; and the nut fixing stability and the welding quality of the device in the welding process are improved in an auxiliary mode.

Description

Technical Field

[0001] This invention relates to the field of welding and fixing bracket technology, specifically to a welding and fixing device for four-corner welding nuts and its welding process. Background Technology

[0002] Four-corner weld nuts are a type of special fastener used for non-removable welded connections. They are mainly used in the automotive, mold, shipbuilding, and railway industries. They are often welded to the pre-drilled areas at the corners of various sheet metal parts to facilitate subsequent installation and fixing of the sheet metal parts.

[0003] Patent application CN117697286A discloses an automatic welding device for automotive sheet metal nuts and its welding process. The technical solution includes: a workpiece rack and a fixed bracket fixedly installed at one end of the workpiece rack, and also includes a bidirectional processing table. The bidirectional processing table is fixedly installed at one end of the fixed bracket. Clamping blocks with sliding cavities are fixedly connected to both ends of the bidirectional processing table. A hinged long rod is hinged to one end of the clamping block through the sliding cavity. A lower clamping rod is hinged inside the hinged long rod.

[0004] The automatic welding device for automotive sheet metal nuts provided by this patent may experience a deviation in the movement of the conical airbag block pushing the nut after long-term use, which may result in the inability to push the nut, thereby affecting the processing quality and efficiency of the device for sheet metal parts. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding fixing device for four-corner welding nuts and its welding process, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding and fixing device for four-corner welding nuts, comprising a transverse vibrating slide, a longitudinal slide slidably connected inside the transverse vibrating slide, the longitudinal slide being slidably connected to the transverse vibrating slide via a hydraulic cylinder, a vibrating motor fixedly connected to the bottom of the transverse vibrating slide, and a feeding and stabilizing mechanism slidably connected inside the longitudinal slide, the feeding and stabilizing mechanism comprising:

[0007] The feeding oil tank is slidably connected to the longitudinal slide via a hydraulic cylinder. The top of the feeding oil tank has a circular through hole, and the inside of the feeding oil tank has a rectangular blind hole that communicates with the circular through hole at the top.

[0008] The material pushing auxiliary rod includes a main rod body that is slidably connected to the inside of the circular through hole of the feeding oil tank, an oil baffle block that is fixedly connected to the bottom of the main rod body, and an ultrasonic vibration sleeve rod that is slidably connected to the bottom of the oil baffle block;

[0009] An auxiliary fixing ring, comprising an oil inlet ring fixedly connected to the top of the feeding oil tank, wherein a clamping slide plate is slidably connected to the inner side of the outer surface of the oil inlet ring via a spring;

[0010] A buffer pad is fixedly connected to the top of the feeding oil tank.

[0011] Preferably, the inner wall of the circular through hole of the feeding oil tank is connected to the rectangular blind hole, the rectangular blind hole of the feeding oil tank is connected to the external air pump equipment, the circular blind hole of the feeding oil tank is connected to the external oil pump equipment, the ultrasonic vibration sleeve is electrically connected to the control cabinet through the wire, the closed space formed by the inside of the oil baffle block and the inside of the circular through hole of the feeding oil tank is filled with hydraulic oil, and the ultrasonic vibration sleeve is fixedly connected to the bottom of the feeding oil tank.

[0012] Preferably, the oil inlet ring is filled with hydraulic oil and is connected to an external oil pump device.

[0013] Preferably, a welding auxiliary mechanism is fixedly connected to one side of the longitudinal slide. The welding auxiliary mechanism includes a transverse sliding plate frame, which includes a main plate frame fixedly connected to one side of the longitudinal slide. A fixed rack is fixedly connected to the top of the main plate frame. An auxiliary heating fixing frame is slidably connected to one side of the fixed rack. The auxiliary heating fixing frame includes a meshing chassis slidably connected to one side of the fixed rack via gears. A welding machine body is slidably connected to the top of the meshing chassis via a hydraulic cylinder. A support frame is fixedly connected to the other side of the welding machine body. An auxiliary heating pressure frame is slidably connected to the other side of the support frame via a push-pull electromagnet. An electric heating plate is embedded inside the auxiliary heating pressure frame. The electric heating plate is electrically connected to the control cabinet via wires.

[0014] Preferably, the top of the main board frame is slidably connected to an oil tank fixing plate by a spring, and the other side of the oil tank fixing plate is slidably connected to one side of the longitudinal slide, with the oil tank fixing plate located on the side of the feeding oil tank.

[0015] Preferably, a plate displacement mechanism is fixedly connected to the back of the longitudinal slide. The plate displacement mechanism includes a fixed base fixedly connected to the back of the transverse vibrating slide. An adsorption frame is rotatably connected to the top of the fixed base. The adsorption frame includes a rotating suction cup frame rotatably connected to the top of the fixed base. A suction cup is connected to the bottom of the rotating suction cup frame. The rotating suction cup frame is connected to an external air pump device. A cooling spray pipe is fixedly connected to the top of the rotating suction cup frame. Spray nozzles are connected to both sides of the cooling spray pipe. A lifting ring is rotatably connected to the front of the rotating suction cup frame. The top of the lifting ring is fixedly connected to a gantry crane at the top of the device.

[0016] Preferably, a heat-conducting fixing plate is fixedly connected to the inner side of the outer surface of the rotating suction cup frame, and a sliding pressure plate is slidably connected to the bottom of the heat-conducting fixing plate via a spring. Both the heat-conducting fixing plate and the sliding pressure plate are made of copper.

[0017] Preferably, an inclined cleaning frame is fixedly connected to the back of the fixed base. The inclined cleaning frame includes a slide sleeve fixedly connected to the back of the fixed base. A support transmission rod is slidably connected to the top of the slide sleeve via a spring. A roller is rotatably connected to the top of the support transmission rod. A vibration motor is fixedly connected to the front of the slide sleeve.

[0018] A welding process for four-corner welded nuts:

[0019] S1. Before placing the plate, adjust the position of the longitudinal slide and the feeding oil tank by controlling the hydraulic cylinder through the control cabinet, so that the position of the feeding oil tank is consistent with the welding position of the plate. Place the four corner welding nuts to be welded horizontally in the round through hole of the feeding oil tank in sequence, keeping the welding joint surface of the nuts and the plate facing upwards. After placement, let the oil pump discharge oil into the oil inlet ring, and the oil pushes the clamping slide to clamp the nuts.

[0020] S2. After the nut is placed, place the plate to be welded with the side that is in contact with the nut facing up on the suction cup of the rotating suction cup frame. Control the air pump to exhaust air through the control cabinet, so that the suction cup can adsorb the plate. Spray high-speed airflow onto the surface of the plate through the cooling nozzle to remove small impurities from the surface of the plate.

[0021] S3. Hang the lifting swivel on the hook of the gantry crane. The gantry crane drives the lifting swivel to rotate the entire adsorption and fixing frame until the plate mating surface contacts the nut.

[0022] S4. Weld the plate and nut together;

[0023] S5. The cooling nozzle sprays out a high-speed airflow, which is then driven by the gantry crane to reset the entire adsorption fixing frame by driving the lifting rotating ring. This allows the top of the heat-conducting fixing plate to fall on the top of the roller of the support transmission rod, and the vibration motor is started. At the same time, the high-speed airflow sprayed from the cooling nozzle achieves further cleaning.

[0024] This invention provides a welding and fixing device for four-corner welding nuts. It has the following beneficial effects:

[0025] 1. This welding and fixing device for four-corner welding nuts, by setting up a feeding stabilizing mechanism, uses a feeding oil box in conjunction with a pushing auxiliary rod to realize the device feeding the welding nut from the bottom, thereby assisting in the reverse welding and fixing process of the device. By using the feeding oil box in conjunction with the transverse vibration slide and the longitudinal slide, the device can accurately position the welding position of the nut, thereby preventing the nut from failing to be accurately positioned and improving the positioning and fixing accuracy of the device.

[0026] 2. This welding and fixing device for four-corner welded nuts, by setting up a feeding stabilizing mechanism and using a pusher auxiliary rod in conjunction with an ultrasonic vibration sleeve rod, achieves the loosening of the nut during the feeding process, preventing the nut from getting stuck and affecting the feeding process, thus improving the processing efficiency of the device. By using a feeding oil box in conjunction with an auxiliary fixing ring and a buffer pad, the device achieves stable fixing of the nut position, thus improving the stability of the nut fixing during the welding process.

[0027] 3. This welding fixing device for four-corner welding nuts, by setting up a welding auxiliary mechanism, utilizes the welding machine body in conjunction with an auxiliary heating pressure frame to physically press the plate and nut together and preheat the plate with auxiliary heating, reducing the deformation of the plate during the welding process, ensuring that the plate and nut are completely fitted, thereby reducing the occurrence of incomplete welding of the device, and ultimately improving the welding quality of the device.

[0028] 4. This welding fixing device for four-corner welding nuts, by setting up a plate displacement mechanism, uses a rotating suction cup frame in conjunction with a cooling spray pipe and a gantry crane to achieve the device's loading and unloading fixing of the plate. At the same time, the device can clean the plate before and after welding to reduce the interference of fine impurities on the welding. The rotating suction cup frame, in conjunction with a heat-conducting fixing plate, a sliding pressure plate, and an inclined cleaning frame, assists in fixing the plate during welding while absorbing the heat transferred to other parts of the plate. After welding, it assists in transferring vibration to the plate, thereby helping to clean welding slag and other fine impurities, thus improving the welding quality of the device. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram showing the positional relationship between the longitudinal carriage and the welding auxiliary mechanism of the present invention;

[0031] Figure 3 This is a schematic diagram showing the positional relationship between the longitudinal carriage and the feeding stabilization mechanism of the present invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the diagram;

[0033] Figure 5 This is a cross-sectional schematic diagram of the internal structure of the feeding oil tank of the present invention;

[0034] Figure 6 This is a cross-sectional view of the internal structure of the auxiliary fixing ring of the present invention;

[0035] Figure 7 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B in the diagram;

[0036] Figure 8 This is a schematic diagram of the overall structure of the welding auxiliary mechanism of the present invention;

[0037] Figure 9 This is a schematic diagram showing the positional relationship between the welding auxiliary mechanism and the material feeding stabilization mechanism of the present invention;

[0038] Figure 10 This is a schematic diagram of the overall structure of the plate displacement mechanism of the present invention;

[0039] Figure 11 This is a schematic diagram of the bottom structure of the adsorption fixing frame of the present invention;

[0040] Figure 12 For the present invention Figure 10 A magnified schematic diagram of the structure at point C.

[0041] In the diagram: 1. Transverse vibrating slide; 2. Longitudinal slide; 3. Feeding stabilizing mechanism; 31. Feeding oil tank; 32. Pushing auxiliary rod; 321. Main rod body; 322. Oil baffle block; 323. Ultrasonic vibrating sleeve; 33. Auxiliary fixing ring; 331. Oil inlet ring; 332. Clamping slide plate; 34. Buffer pad; 4. Welding auxiliary mechanism; 41. Transverse moving plate frame; 411. Main plate frame; 412. Fixing rack; 42. Auxiliary heating fixing frame; 421. Engaging chassis; 422. Welding machine body; 423. Support frame; 424. Auxiliary heating pressure frame; 43. Oil tank fixing plate; 5. Plate displacement mechanism; 51. Fixed base; 52. Adsorption fixing frame; 521. Rotating suction cup frame; 522. Cooling nozzle; 523. Lifting swivel; 524. Heat-conducting fixing plate; 525. Sliding pressure plate; 53. Inclined cleaning frame; 531. Slide sleeve; 532. Support transmission rod; 6. Control cabinet. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0044] Example 1

[0045] Please see Figure 1-6The present invention provides a technical solution: a welding and fixing device for four-corner welding nuts, comprising a transverse vibration slide 1, a longitudinal slide 2 slidably connected inside the transverse vibration slide 1, the longitudinal slide 2 being slidably connected to the transverse vibration slide 1 via a hydraulic cylinder, a vibration motor being fixedly connected to the bottom of the transverse vibration slide 1, and a laser rangefinder sensor being installed at the bottom of the transverse vibration slide 1 for sensing the position of the longitudinal slide 2.

[0046] In existing technologies, welding often involves placing the nut on top of the welding position on the plate. Since welding is a high-frequency, repetitive action, the nut can easily become misaligned over time, leading to increased processing errors. To reduce errors caused by directly placing the nut, a feeding and stabilizing mechanism 3 is slidably connected inside the longitudinal slide 2. This mechanism includes a feeding oil tank 31, which is slidably connected to the longitudinal slide 2 via a hydraulic cylinder. The feeding oil tank 31 has a circular through-hole at its top and a rectangular blind hole inside, communicating with the circular through-hole. The inner wall of the circular through-hole communicates with the rectangular blind hole. The rectangular blind hole of the feeding oil tank 31 is connected to an external air pump, and the circular blind hole is also connected to an external oil pump. A pushing auxiliary rod 32 is slidably connected inside the circular through-hole of the feeding oil tank 31. The pushing auxiliary rod 32 includes components that connect to the circular through-hole of the feeding oil tank 31. A main rod 321 is slidably connected inside the through hole. An oil baffle 322 is fixedly connected to the bottom of the main rod 321. An ultrasonic vibration sleeve 323 is slidably connected to the bottom of the oil baffle 322. The ultrasonic vibration sleeve 323 is electrically connected to the control cabinet 6 through a wire. The closed space formed by the oil baffle 322 and the circular through hole of the feeding oil tank 31 is filled with hydraulic oil. The ultrasonic vibration sleeve 323 is fixedly connected to the bottom of the feeding oil tank 31. An auxiliary fixing ring 33 is fixedly connected to the top of the feeding oil tank 31. The auxiliary fixing ring 33 includes an oil inlet ring 331 fixedly connected to the top of the feeding oil tank 31. A clamping slide plate 332 is slidably connected to the inner side of the outer surface of the oil inlet ring 331 through a spring. The oil inlet ring 331 is filled with hydraulic oil and is connected to an external oil pump device. A buffer pad 34 is fixedly connected to the top of the feeding oil tank 31. The buffer pad 34 is made of elastic material and is used to assist in supporting the plate.

[0047] The control cabinet 6 is located on the front of the transverse vibration carriage 1.

[0048] During use, before placing the plate, the hydraulic cylinder is controlled by the control cabinet 6 to adjust the position of the longitudinal slide 2 and the feeding oil box 31 so that the position of the feeding oil box 31 is consistent with the welding position of the plate.

[0049] After adjustment, place the four corner welding nuts that need to be welded horizontally in the circular through hole of the feeding oil tank 31, keeping the welding joint surfaces of the nuts and the plate facing upwards. After placement, let the oil pump discharge oil into the oil inlet ring 331. As the oil enters the oil inlet ring 331, the oil pushes the clamping slide plate 332 to slide towards the nut, thereby clamping the nut. Then, place the plate for welding.

[0050] After welding is completed, the welded finished product is taken out. The oil pump is controlled by the control cabinet 6 to discharge the oil inside the oil inlet ring 331. The clamping slide plate 332 releases the clamp on the nut and takes out the welded finished product. Then, the oil pump is controlled to discharge oil into the upper oil tank 31. The oil is used to lift the oil baffle block 322, which in turn lifts the main rod body 321. The nut is then lifted by lifting the main rod body 321.

[0051] During the nut lifting process, the air pump exhausts air through the rectangular through hole into the circular through hole of the feed oil box 31, clearing away small debris that has fallen into the circular through hole of the feed oil box 31. The ultrasonic vibration sleeve 323 is energized to generate high-frequency vibration, which is transmitted to the nut. The vibration of the nut, combined with the high-speed airflow, prevents small debris from adhering to the mating surface of the nut to be welded. At the same time, the vibration motor of the transverse vibration slide 1 is energized to generate vibration, which helps to clean the residual small impurities on the surface of the transverse vibration slide 1 and the longitudinal slide 2, preventing small impurities from causing jamming.

[0052] Example 2

[0053] Please see Figure 1-9Based on Embodiment 1, this invention provides a technical solution: During the welding process, the welding area of ​​the plate is prone to increased thermal deformation due to the large temperature difference compared to the surrounding area, especially in the corner areas of the plate, where this deformation error is more pronounced. Ultimately, this will cause the plate and nut welding positions to not fit completely, reducing processing quality. To address this, a welding auxiliary mechanism 4 is fixedly connected to one side of the longitudinal slide 2. The welding auxiliary mechanism 4 includes a transverse plate frame 41, which includes a main plate frame 411 fixedly connected to one side of the longitudinal slide 2. A fixed rack 412 is fixedly connected to the top of the main plate frame 411, and an auxiliary heating fixing frame 42 is slidably connected to one side of the fixed rack 412. The auxiliary heating fixing frame 42 includes a meshing chassis 421 slidably connected to one side of the fixed rack 412 via gears. A servo motor is connected to the top of the gears and the top of the meshing chassis 421. The motor is fixedly connected, and the top of the meshing chassis 421 is slidably connected to the welding machine body 422 via a hydraulic cylinder. The welding machine body 422 is existing technology. A laser rangefinder and a temperature probe are installed on the top of the welding machine body 422. The distance between the welding head and the plate is detected to help determine whether the plate and screw are in complete contact. The temperature near the welding position of the plate is detected to determine the heating status of the plate. A support frame 423 is fixedly connected to the other side of the welding machine body 422. An auxiliary heating pressure frame 424 is slidably connected to the other side of the support frame 423 via a push-pull electromagnet. An electric heating plate is embedded inside the auxiliary heating pressure frame 424. The electric heating plate is electrically connected to the control cabinet 6 via a wire. An oil tank fixing plate 43 is slidably connected to the top of the main frame 411 via a spring. The other side of the oil tank fixing plate 43 is slidably connected to one side of the longitudinal slide 2. The oil tank fixing plate 43 is located on one side of the feeding oil tank 31.

[0054] In use, the servo motor drives the gear to move the meshing chassis 421 back and forth, and the hydraulic cylinder controls the welding machine body 422 to move the welding head left and right. After the plate is placed in the first embodiment, the positions of the meshing chassis 421 and the welding machine body 422 are adjusted so that the welding head can weld. When the meshing chassis 421 reaches the limit position, the meshing chassis 421 pushes the oil tank fixing plate 43 to slide, thereby allowing the oil tank fixing plate 43 to squeeze the feeding oil tank 31 and further fix the feeding oil tank 31. After the meshing chassis 421 and the welding machine body 422 are adjusted, the push-pull electromagnet is controlled to push the auxiliary heating frame 424 to press on the top of the plate, so that the plate and the nut are in full contact. At the same time, the heating plate of the auxiliary heating frame 424 is energized to preheat the area near the welding position on the top of the plate. After the preheating is completed, welding begins.

[0055] Example 3

[0056] Please see Figure 1-12Based on Embodiments 1 and 2, the present invention provides a technical solution: In the prior art, after welding is completed, materials are often manually removed, and then the residue and debris generated during the welding process are manually cleaned, which greatly reduces production efficiency and increases the workload of operators. To address this, a plate displacement mechanism 5 is fixedly connected to the back of the longitudinal slide 2. The plate displacement mechanism 5 includes a fixed base 51 fixedly connected to the back of the transverse vibrating slide 1. An adsorption fixing frame 52 is rotatably connected to the top of the fixed base 51. The adsorption fixing frame 52 includes a rotating suction cup frame 521 rotatably connected to the top of the fixed base 51. A suction cup is connected to the bottom of the rotating suction cup frame 521. The rotating suction cup frame 521 is connected to an external air pump device. A cooling device is fixedly connected to the top of the rotating suction cup frame 521. The nozzle 522 has nozzles connected to both sides on the left and right sides. The rotating suction cup frame 521 is rotatably connected to the front of the lifting ring 523. The top of the lifting ring 523 is fixedly connected to the gantry crane at the top of the device. The inner side of the outer surface of the rotating suction cup frame 521 is fixedly connected to the heat-conducting fixing plate 524. The bottom of the heat-conducting fixing plate 524 is slidably connected to the sliding pressure plate 525 by a spring. Both the heat-conducting fixing plate 524 and the sliding pressure plate 525 are made of copper. The back of the fixed base 51 is fixedly connected to the inclined cleaning frame 53. The inclined cleaning frame 53 includes a slide sleeve 531 fixedly connected to the back of the fixed base 51. The top of the slide sleeve 531 is slidably connected to the support transmission rod 532 by a spring. The top of the support transmission rod 532 is rotatably connected to the roller. The front of the slide sleeve 531 is fixedly connected to the vibration motor.

[0057] In use, in Example 1, after placing the nut, the side of the plate to be welded that is in contact with the nut is placed on the suction cup of the rotating suction cup frame 521 with the side facing up. The air pump is controlled by the control cabinet 6 to exhaust air, allowing the suction cup to adsorb the plate. Then, the lifting ring 523 is hung on the hook of the gantry crane. The gantry crane drives the lifting ring 523 to drive the entire adsorption fixing frame 52 to rotate until the plate joint surface contacts the nut. Then, a high-speed airflow is sprayed onto the plate surface through the cooling nozzle 522 to remove small impurities from the plate surface and prevent small impurities from interfering with the welding process. After cleaning, the welding process is carried out. During the welding process, the plate is tightly attached to the nut under the joint clamping of the adsorption fixing frame 52 and the auxiliary heat pressure frame 424, while preventing the plate surface deformation from increasing. Some of the heat transferred to other parts of the plate is transferred to the sliding pressure plate 525, and then to the heat-conducting fixing plate 524, and finally dissipated into the air.

[0058] After welding is completed, the cooling nozzle 522 sprays out a high-speed airflow to clean up the debris and residue generated during the welding process. Then, the gantry crane drives the lifting swivel 523 to reset the entire adsorption fixing frame 52, so that the top of the heat-conducting fixing plate 524 falls on the top of the roller of the support transmission rod 532. Then, the vibration motor is started, and the vibration generated by the vibration motor is transmitted to the support transmission rod 532 through the slide sleeve 531, and finally to the surface of the welded plate, which works together with the high-speed airflow sprayed from the cooling nozzle 522 to clean it.

[0059] Example 4

[0060] Please see Figure 1-12 Based on Embodiments 1, 2, and 3, the present invention provides a technical solution: a welding process for a four-corner weld nut.

[0061] S1. Before placing the plate, control the hydraulic cylinder through the control cabinet 6 to adjust the position of the longitudinal slide 2 and the loading oil tank 31 so that the position of the loading oil tank 31 is consistent with the welding position of the plate. Place the four corner welding nuts to be welded horizontally in sequence inside the circular through hole of the loading oil tank 31, keeping the welding joint surface of the nuts and the plate facing upwards. After placement, let the oil pump discharge oil into the oil inlet ring 331, and the oil pushes the clamping slide plate 332 to clamp the nuts.

[0062] S2. After the nut is placed, place the plate to be welded with the side that is in contact with the nut facing up on the suction cup of the rotating suction cup frame 521. Control the air pump to exhaust air through the control cabinet 6 so that the suction cup can adsorb the plate. Spray high-speed airflow onto the surface of the plate through the cooling nozzle 522 to remove small impurities from the surface of the plate.

[0063] S3. Hang the lifting swivel 523 on the hook of the gantry crane. The gantry crane drives the lifting swivel 523 to drive the entire adsorption fixing frame 52 to rotate until the plate mating surface contacts the nut.

[0064] S4. Weld the plate and nut together;

[0065] S5. The cooling nozzle 522 sprays out a high-speed airflow, which is then driven by the gantry crane to drive the lifting rotating ring 523 to reset the entire adsorption fixing frame 52, so that the top of the heat-conducting fixing plate 524 falls on the top of the roller of the support transmission rod 532. The vibration motor is started, and at the same time, the high-speed airflow sprayed by the cooling nozzle 522 achieves further cleaning.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding fixing device for four-corner welding nuts, comprising a transverse vibrating slide (1), wherein a longitudinal slide (2) is slidably connected inside the transverse vibrating slide (1), characterized in that: The longitudinal carriage (2) is internally slidably connected to a feeding and stabilizing mechanism (3), which includes: The feeding oil tank (31) is slidably connected to the longitudinal slide (2) by a hydraulic cylinder. The top of the feeding oil tank (31) is provided with a circular through hole, and the inside of the feeding oil tank (31) is provided with a rectangular blind hole that communicates with the top circular through hole. The material pushing auxiliary rod (32) includes a main rod body (321) which is slidably connected to the inside of the circular through hole of the feeding oil box (31). An oil baffle block (322) is fixedly connected to the bottom of the main rod body (321), and an ultrasonic vibration sleeve rod (323) is slidably connected to the bottom of the oil baffle block (322). The auxiliary fixing ring (33) includes an oil inlet ring (331) fixedly connected to the top of the feeding oil tank (31), and a clamping slide plate (332) is slidably connected to the inner side of the outer surface of the oil inlet ring (331).

2. The welding fixing device for a four-corner welded nut according to claim 1, characterized in that: The inner wall of the circular through hole of the feeding oil box (31) is connected to the rectangular blind hole, the rectangular blind hole of the feeding oil box (31) is connected to the external air pump equipment, and the ultrasonic vibration sleeve (323) is fixedly connected to the bottom of the feeding oil box (31).

3. The welding fixing device for a four-corner welded nut according to claim 2, characterized in that: The oil inlet ring (331) is filled with hydraulic oil and is connected to an external oil pump device.

4. The welding fixing device for a four-corner welded nut according to claim 1, characterized in that: A welding auxiliary mechanism (4) is fixedly connected to one side of the longitudinal slide (2). The welding auxiliary mechanism (4) includes a transverse plate frame (41). The transverse plate frame (41) includes a main plate frame (411) fixedly connected to one side of the longitudinal slide (2). A fixed rack (412) is fixedly connected to the top of the main plate frame (411). An auxiliary heating fixing frame (42) is slidably connected to one side of the fixed rack (412). The auxiliary heating fixing frame (42) includes a meshing chassis (421) slidably connected to one side of the fixed rack (412) via gears. A welding machine body (422) is slidably connected to the top of the meshing chassis (421) via a hydraulic cylinder. A support frame (423) is fixedly connected to the other side of the welding machine body (422). An auxiliary heating pressure frame (424) is slidably connected to the other side of the support frame (423) via a push-pull electromagnet. An electric heating plate is embedded inside the auxiliary heating pressure frame (424).

5. The welding fixing device for a four-corner welded nut according to claim 4, characterized in that: The top of the main board frame (411) is slidably connected to an oil tank fixing plate (43), and the other side of the oil tank fixing plate (43) is slidably connected to one side of the longitudinal slide (2).

6. The welding fixing device for a four-corner welded nut according to claim 1, characterized in that: The longitudinal slide (2) is fixedly connected to a plate displacement mechanism (5) on its back. The plate displacement mechanism (5) includes a fixed base (51) fixedly connected to the back of the transverse vibration slide (1). The fixed base (51) is rotatably connected to an adsorption fixing frame (52) on its top. The adsorption fixing frame (52) includes a rotating suction cup frame (521) rotatably connected to the top of the fixed base (51). The bottom of the rotating suction cup frame (521) is connected to a suction cup. The top of the rotating suction cup frame (521) is fixedly connected to a cooling spray pipe (522). The left and right sides of the cooling spray pipe (522) are connected to nozzles.

7. A welding fixing device for a four-corner welded nut according to claim 6, characterized in that: The rotating suction cup frame (521) is rotatably connected to a lifting ring (523) on its front side. A heat-conducting fixing plate (524) is fixedly connected to the inner side of the outer surface of the rotating suction cup frame (521). A sliding pressure plate (525) is slidably connected to the bottom of the heat-conducting fixing plate (524) via a spring.

8. A welding fixing device for a four-corner welded nut according to claim 7, characterized in that: The fixed base (51) is fixedly connected to the back of the inclined cleaning frame (53). The inclined cleaning frame (53) includes a slide sleeve (531) fixedly connected to the back of the fixed base (51). The top of the slide sleeve (531) is slidably connected to a support transmission rod (532) by a spring. The front of the slide sleeve (531) is fixedly connected to a vibration motor.

9. The welding process for a four-corner welded nut according to claim 8, characterized in that: S1. Before placing the plate, the hydraulic cylinder is controlled by the control cabinet (6) to adjust the position of the longitudinal slide (2) and the loading oil box (31) so that the position of the loading oil box (31) is consistent with the welding position of the plate. The four corner welding nuts to be welded are placed horizontally in the circular through hole of the loading oil box (31) in sequence, keeping the welding joint surface of the nuts and the plate facing upwards. After placement, the oil pump discharges oil into the oil inlet ring (331), and the oil pushes the clamping slide plate (332) to clamp the nuts. S2. After the nut is placed, place the plate to be welded with the side that is in contact with the nut facing up on the suction cup of the rotating suction cup frame (521). Control the air pump to exhaust air through the control cabinet (6) so that the suction cup can adsorb the plate. Spray high-speed airflow onto the surface of the plate through the cooling nozzle (522) to remove small impurities from the surface of the plate. S3. Hang the lifting swivel (523) on the hook of the gantry crane. The gantry crane drives the lifting swivel (523) to drive the entire adsorption fixing frame (52) to rotate until the plate joint surface contacts the nut. S4. Weld the plate and nut together; S5. The cooling nozzle (522) sprays out a high-speed airflow, which is then driven by the gantry crane to drive the lifting swivel (523) to reset the entire adsorption fixing frame (52), so that the top of the heat-conducting fixing plate (524) falls on the top of the roller of the support transmission rod (532), and the vibration motor is started. At the same time, the high-speed airflow sprayed out by the cooling nozzle (522) is used to achieve further cleaning.

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