A smart integrated welding, assembly, and testing equipment for automotive panel frames

Abstract

This invention discloses an intelligent welding assembly and testing integrated equipment for automotive panel frames, which includes a welding table, a first lifting system, and a panel frame welding head. The first lifting system is installed on the top of the welding table, and the panel frame welding head is installed on the first lifting system. The panel frame welding head includes a hanger for connecting to the first lifting system. An ultrasonic welding head for welding automotive panel frames is installed on the hanger, and the ultrasonic welding head has a cavity at its center corresponding to the weld joint. A cooling and cleaning system for cleaning and cooling the weld joint end is installed on the cavity.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic welding technology, specifically to an intelligent integrated welding assembly and testing equipment for automotive panel frames. Background Technology

[0002] In the automobile manufacturing process, the welding and assembly of the vehicle's panel frame is a critical step that significantly impacts the vehicle's safety, stability, and appearance quality. However, traditional welding and assembly inspection methods typically require manual intervention, making them susceptible to human factors and subjective judgment, leading to instability in inspection accuracy and efficiency.

[0003] In the case of ultrasonic welding of panel frames, during long-term operation, the welding end of the ultrasonic welding head often has a certain amount of solder residue adhering to it. As the operation time increases, the solder residue on its surface will continue to accumulate, thus affecting the alignment of the butt joints and the welding quality of the welds in subsequent welding processes.

[0004] Therefore, it is necessary to provide an intelligent integrated welding, assembly, and inspection device for automotive panel frames to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent welding assembly and testing integrated equipment for automotive panel frames, comprising a welding table, a first lifting system, and a panel frame welding head. The first lifting system is installed on the top of the welding table, and the panel frame welding head is installed on the first lifting system. The panel frame welding head includes a bracket for connecting to and installing on the first lifting system. An ultrasonic welding head for welding automotive panel frames is installed on the bracket, and the ultrasonic welding head has a cavity at its center corresponding to the weld joint. A cooling and cleaning system for cleaning and cooling the weld joint end is installed on the cavity.

[0006] Furthermore, the cooling and cleaning system includes an inner column rod, a first spring, and a sealing slider. The upper end of the inner column rod is installed in the cavity at the end away from the weld. The inner column rod is provided with a first air hole and a second air hole. The first air hole is connected to a first pressure control pump, and the second air hole is connected to a second pressure control pump. The lower end of the inner column rod is provided with a thin rod body.

[0007] The sealing slider is slidably assembled on the outside of the thin rod body, and the sealing slider is respectively attached to the outer wall of the inner column rod and the cavity wall, forming a second air cavity communicating with the first air hole and a first air cavity communicating with the second air hole. The lower end of the sealing slider is rotatably mounted with a cooling and cleaning rotor that can be driven and controlled by the first pressure pump and can clean and cool the weld end.

[0008] The first spring is disposed in the first air chamber, and its upper and lower ends are respectively connected to the inner column rod and the sealing slider.

[0009] Furthermore, the cooling and cleaning rotor includes an upper ring body, a lower ring body, and a cleaning head. The upper ring body is used for rotatable assembly with the thin rod body. The lower ring body is detachably mounted at the lower end of the upper ring body. The bottom center of the lower ring body is provided with a welding detection system, and the side circumference is provided with a cleaning head for cleaning the inner cavity wall of the weld and the lower end wall of the weld.

[0010] Furthermore, a bottom groove is provided at the center of the bottom of the lower ring body, and a through hole communicating with the second air chamber is provided at the axis of the lower ring body;

[0011] The welding inspection system includes a concave-convex rigid disk and a deformation sensor. The outer edge of the concave-convex rigid disk is fixedly and sealed to the outer groove edge of the bottom groove. The deformation sensor is fixed at the center of the upper end face of the concave-convex rigid disk.

[0012] Furthermore, the convex-concave rigid disc can convex upwards / concave downwards under the control of the first pressure pump, and the deformation sensor is used to monitor the upward / concave shape of the convex-concave rigid disc.

[0013] Furthermore, the lower ring body has a lower opening distributed around its side circumference, and the lower opening is connected to a lower seam opening on its vertically downward side.

[0014] The cleaning head includes a lifting plate base, which includes an L-shaped plate part that is integrally structured and can be vertically slidably assembled with the lower opening and a vertical plate part that is vertically slidably assembled with the lower seam. A radially movable opening box is connected to the vertical plate surface of the L-shaped plate part through a telescopic guide rod. The opening box and the vertical plate surface of the L-shaped plate part are connected by a second spring. A cleaning pad is adhered to the outer end of the opening box. A vent hole communicating with the second air chamber is provided on the vertical plate surface of the L-shaped plate part.

[0015] The lower end of the upper ring body has an upper opening distributed around its circumference, corresponding to the lower opening. A scraper is fixed on the upper surface of the opening box. The scraper is inclined in the upper opening and offset from the axis of the lower ring body.

[0016] Furthermore, the cleaning pad is attached to the outer end of the opening box via Velcro.

[0017] Furthermore, the lower opening has a lower groove connected to its inner side in the horizontal direction. A vertical guide post is fixed in the lower groove. A third spring with its lower end connected to its bottom is fitted onto the guide post. The inner end of the lifting plate seat is fitted onto the guide post and slidably mounted vertically, and is connected to the upper end of the third spring.

[0018] Furthermore, the welding table is equipped with a material transfer belt and a second lifting system distributed on both sides of the material transfer belt. A fixing plate for supporting and fixing the car panel frame is placed on the material transfer belt, and the width of the fixing plate is greater than the width of the material transfer belt and can be driven and lifted by the second lifting system.

[0019] Compared with the prior art, the present invention provides an intelligent integrated welding, assembly and inspection equipment for automotive panel frames, which has the following beneficial effects:

[0020] In this invention, the structure and control method of the cooling and cleaning system and the cooling and cleaning rotor enable the cooling gas, which acts as a separation medium between the ultrasonic welding head and the welding point after the ultrasonic welding head and the first lifting system are activated for welding, to cause the upper surface of the welding point to experience a separation tendency and sequence from the outside to the inside. Once a gap appears in the tightly fitted state, the cooling gas will fill in to cool and press it down. During this extreme period, the cooling and cleaning rotor will also have a twisting tendency under the guidance of the scraper, making it easier and smoother for the cooling and cleaning rotor to connect with the welding point. The upper end face and the side surface of the welding point are separated from each other. Once the cooling and cleaning head rotates, it indicates that it is separated from both the welding point and the ultrasonic welding head. At this time, the cleaning pad will first clean the inner cavity wall of the weld joint of the ultrasonic welding head. When the scraper moves downward to expose the lower end wall of the weld joint, the scraper will extend outward to clean the lower end wall of the weld joint. Thus, after each welding is completed, the weld joint end of the ultrasonic welding head is instantly cooled and cleaned to ensure the cleanliness of the weld joint end of the ultrasonic welding head each time, thereby ensuring and improving the welding quality under long-term batch operation. Attached Figure Description

[0021] Figure 1 A schematic diagram of an intelligent integrated welding, assembly, and testing equipment for automotive panel frames;

[0022] Figure 2 Schematic diagram of partial cross-sectional structure of the welded joint Figure 1 ;

[0023] Figure 3 Schematic diagram of partial cross-sectional structure of the welded joint Figure 2 ;

[0024] Figure 4 This is a partial cross-sectional exploded view of the welded joint.

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the cleaning head;

[0026] Figure 6 This is a schematic diagram of the lower structure of the upper ring body;

[0027] Figure 7This is a schematic diagram of the upper structure of the lower ring body;

[0028] Figure 8 A schematic diagram illustrating the deformation of a rigid disc with concave and convex surfaces;

[0029] In the diagram: 1. Welding table; 2. First lifting system; 3. Panel frame welding head; 4. Material conveyor belt; 5. Second lifting system; 6. Fixing carrier plate; 7. Cooling and cleaning rotary head; 8. Cleaning head; 9. Concave-convex rigid disc; 10. Deformation sensor; 31. Hanger; 32. Ultrasonic welding head; 33. Inner column rod; 34. First spring; 35. Sealing slider; 36. First pressure control pump; 37. Second pressure control pump; 321. First air chamber; 331. First air hole; 332. Second air hole; 351. Second air chamber; 71. Upper ring body; 72. Lower ring body; 711. Upper opening; 721. Lower opening; 722. Lower seam opening; 723. Lower groove opening; 724. Bottom groove; 81. Lifting plate seat; 82. Telescopic guide rod; 83. Opening box; 84. Second spring; 85. Cleaning pad; 86. Scraper; 87. Guide post; 88. Third spring; 811. Vent hole. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings.

[0031] like Figures 1-8 An intelligent welding assembly and testing integrated equipment for automotive panel frames includes a welding table 1, a first lifting system 2, and a panel frame welding head 3. The first lifting system 2 is installed on the top of the welding table 1, and the panel frame welding head 3 is installed on the first lifting system 2. The panel frame welding head 3 includes a hanger 31 for connecting to the first lifting system 2. An ultrasonic welding head 32 for welding automotive panel frames is installed on the hanger 31, and the ultrasonic welding head 3 has a cavity at its center corresponding to the weld joint. A cooling and cleaning system for cleaning and cooling the weld joint end is installed on the cavity.

[0032] In this embodiment, the cooling and cleaning system includes an inner column rod 33, a first spring 34, and a sealing slider 35. The upper end of the inner column rod 33 is installed in the cavity at the end away from the weld. The inner column rod 33 is provided with a first air hole 331 and a second air hole 332. The first air hole 331 is connected to a first pressure control pump 36, and the second air hole 332 is connected to a second pressure control pump 37. The lower end of the inner column rod 33 is provided with a thin rod body.

[0033] The sealing slider 35 is slidably assembled on the outside of the thin rod body, and the sealing slider 35 is respectively attached to the outer wall of the inner column rod 33 and the cavity wall, forming a second air cavity 351 communicating with the first air hole 331 and a first air cavity 321 communicating with the second air hole 332. The lower end of the sealing slider 35 is rotatably mounted with a cooling and cleaning rotor 7 that can be driven and controlled by the first pressure pump 36 to clean and cool the weld end. Moreover, the lower end face of the cooling and cleaning rotor can present a planar sealing state so that the welding point required for the ultrasonic welding head to be hot melt welded can be cleaned and removed. The cooling and cleaning rotor is driven by the first pressure pump, that is, the first pressure pump can fill the area of ​​the cooling and cleaning rotor with high pressure cooling gas. While the high pressure cooling gas penetrates the cooling and cleaning rotor, it can drive the cooling and cleaning rotor to rotate, thereby cleaning and removing the dirt that adheres during the hot melt welding process at the weld end.

[0034] The first spring 34 is disposed in the first air chamber 321, and its upper and lower ends are respectively connected to the inner column rod 33 and the sealing slider 35. Through the elastic pulling action of the first spring, the movement of the sealing slider is made more stable and controllable.

[0035] In specific implementation, the pressure inside the first air chamber is regulated by the second pressure control pump. Function 1: Before welding begins, it can be used to control the distance between the lower end face of the cooling and cleaning rotor and the lower end wall of the weld joint, so as to flexibly adjust and adapt to the needs of different hot melt welding amounts. Function 2: After welding is completed, it can first control the cooling and cleaning rotor to have an upward tendency, so that the lower end face of the cooling and cleaning rotor is separated from the upper welding surface of the hot melt welding point, and then control the cooling and cleaning rotor to move downward and expose the lower end wall of the weld joint.

[0036] In this embodiment, the cooling and cleaning rotor 7 includes an upper ring body 71, a lower ring body 72, and a cleaning head 8. The upper ring body 71 is used for rotatable assembly with the thin rod body. The lower ring body 72 is detachably installed at the lower end of the upper ring body 71. The bottom center of the lower ring body 72 is provided with a welding detection system, and the side circumference is provided with a cleaning head 8 for cleaning the inner cavity wall of the weld and the lower end wall of the weld. Through the design of the detachable upper and lower ring body structure, the construction, maintenance, and assembly of the cooling and cleaning rotor are more convenient and efficient.

[0037] The lower ring 72 has a bottom groove 724 at its center, and the lower ring 72 has a through hole communicating with the second air chamber 351 at its axial center. The welding detection system includes a concave-convex rigid disk 9 and a deformation sensor 10. The outer edge of the concave-convex rigid disk 9 is fixedly and sealed to the outer groove edge of the bottom groove 724, and the deformation sensor 10 is fixed at the center of the upper end face of the concave-convex rigid disk 9. The concave-convex rigid disk 9 can convex upwards / concave downwards under the control of the first pressure pump 36, and the deformation sensor 10 is used to monitor the upward / concave shape of the concave-convex rigid disk 9. In specific implementation, the initial state of the concave-convex rigid disk is combined with... Figure 8 As shown, it presents a downward concave shape, and the upward convex shape is used as the judgment of the completion of welding. In addition, through the structural design and deformation effect of the concave-convex rigid plate, the welding point during hot melt welding is made more solid, and the judgment of the completion of hot melt welding can be controlled in a timely manner. In addition, during welding, the first pressure pump can be selectively used to exert a certain pressure on the concave-convex rigid plate, thereby enhancing the solidity of the hot melt welding.

[0038] The lower ring 72 has a lower opening 721 distributed around its side circumference, and the lower opening 721 is connected to a lower seam opening 722 on its vertically downward side. The cleaning head 8 includes a lifting plate base 81, which includes an L-shaped plate portion that is vertically slidably assembled with the lower opening 721 and a vertical plate portion that is vertically slidably assembled with the lower seam opening 722. A radially movable opening box 83 is connected to the vertical plate surface of the L-shaped plate portion via a telescopic guide rod 82. The opening box 83 is connected to the vertical plate surface of the L-shaped plate portion via a second spring 84, and a cleaning pad 85 is adhered to the outer end of the opening box 83. The L-shaped plate has ventilation holes 811 on its vertical surface that communicate with the second air chamber 351; the lower side of the upper ring body 71 has upper openings 711 corresponding to the lower opening 721, and a scraper 86 is fixed on the upper surface of the opening box 83. The scraper 86 is inclined in the upper opening 711 and offset from the axis of the lower ring body 72. In specific implementation, after the ultrasonic welding head and the first lifting system are started to perform welding, the first pressure control pump is started to pressurize the cooling gas, the second pressure control pump is started to adjust the negative pressure to a certain value, and the first lifting system is started to adjust the ultrasonic... As the ultrasonic welding head moves upward, the upper surface of the weld point experiences a detachment tendency and sequence from the outside in. Once a gap appears in the tightly fitted state, cooling gas is introduced for cooling and pressure. During this extreme period, the cooling and cleaning head also exhibits a twisting tendency under the guidance of the scraper, making it easier and smoother for the cooling and cleaning head to detach from the upper surface and side surface of the weld point. Once the cooling and cleaning head begins to rotate, it indicates that it has detached from both the weld point and the ultrasonic welding head. At this point, the cleaning pad will first... The ultrasonic welding head cleans the inner wall of the weld joint. When the scraper moves downward to expose the lower end wall of the weld joint, it extends outward to clean the lower end wall of the weld joint. After completion, the pressure intensity is reduced by the first pressure control pump, and the scraper retracts. Then, the pressure intensity is reduced by the second pressure control pump, and the cooling and cleaning head resets. This allows for instant cooling and cleaning of the weld joint end of the ultrasonic welding head after each welding operation, ensuring the cleanliness of the weld joint end of the ultrasonic welding head for each welding operation, thereby guaranteeing and improving the welding quality under long-term batch operation.

[0039] In this embodiment, the cleaning pad 85 is attached to the outer end of the opening box 83 by Velcro.

[0040] In this embodiment, the lower through-hole 721 is connected to the lower slot 723 on its inner side, and a vertical guide post 87 is fixed in the lower slot 723. The guide post 87 is fitted with a third spring 88 whose lower end is connected to its bottom. The inner end of the lifting plate seat 81 is fitted on the guide post 87 and slidably mounted vertically and connected to the upper end of the third spring 88.

[0041] In this embodiment, the welding table 1 is provided with a material transfer belt 4 and a second lifting system 5 distributed on both sides of the material transfer belt 4. A fixing plate 6 for supporting and fixing the car panel frame is placed on the material transfer belt 4, and the width of the fixing plate 6 is greater than the width of the material transfer belt 4 and can be driven and lifted by the second lifting system 5.

[0042] In its specific implementation, it includes the following steps:

[0043] S1: Before welding begins, determine the distance between the lower end face of the cooling and cleaning rotor at the corresponding position and the lower end wall of the weld joint, and regulate the pressure inside the first air chamber through the second pressure control pump. The pressure intensity of the first pressure control pump on the concave-convex rigid disc before welding can be selectively set to enhance the solidity of hot melt welding.

[0044] S2: The second lifting system is used to adjust the lifting and fixing plate to move up to a certain position;

[0045] S3: Welding is performed using the first lifting system and the ultrasonic welding head;

[0046] S4: After welding is completed, the cooling and cleaning system and the first lifting system are activated to complete the separation from the welding point and the cooling and cleaning of the ultrasonic welding head, and then reset.

[0047] S4: Then, the second lifting system is used to adjust the fixed carrier plate to move down and place it on the conveyor belt for transmission, and then the next set of automotive panel frames is welded.

[0048] The above description is merely a preferred embodiment of the 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 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. An intelligent welding assembly and testing integrated equipment for automotive panel frames, comprising a welding table (1), a first lifting system (2), and a panel frame welding head (3), wherein the first lifting system (2) is mounted on the top of the welding table (1), and the panel frame welding head (3) is mounted on the first lifting system (2), characterized in that, The panel frame welding head (3) includes a bracket (31) for connecting and installing on the first lifting system (2). An ultrasonic welding head (32) for welding the automotive panel frame is installed on the bracket (31). The ultrasonic welding head (32) has a cavity corresponding to the weld joint at its center. A cooling and cleaning system for cleaning and cooling the weld joint end is installed on the cavity. The cooling and cleaning system includes an inner column rod (33), a first spring (34), and a sealing slider (35). The upper end of the inner column rod (33) is installed in the cavity at the end away from the weld joint. The inner column rod (33) has a first air hole (331) and a second air hole (332). The first air hole (331) is connected to a first pressure control pump (36), and the second air hole (332) is connected to a second pressure control pump (37). The lower end of the inner column rod (33) has a thin rod body. The sealing slider (35) is slidably assembled on the outside of the thin rod body, and the sealing slider (35) is respectively attached to the outer wall of the inner column rod (33) and the cavity wall, forming a second air chamber (351) communicating with the first air hole (331) and a first air chamber (321) communicating with the second air hole (332). The lower end of the sealing slider (35) is rotatably mounted with a cooling and cleaning rotor (7) that can be driven and controlled by the first pressure pump (36) and can clean and cool the weld end. The first spring (34) is disposed in the first air chamber (321), and its upper and lower ends are respectively connected to the inner column rod (33) and the sealing slider (35).

2. The intelligent welding, assembly, and testing integrated equipment for automotive panel frames according to claim 1, characterized in that, The cooling and cleaning rotating head (7) includes an upper ring body (71), a lower ring body (72), and a cleaning head (8). The upper ring body (71) is used for rotating assembly with the thin rod body. The lower ring body (72) is detachably installed at the lower end of the upper ring body (71). The bottom center of the lower ring body (72) is provided with a welding detection system, and the side circumference is provided with a cleaning head (8) for cleaning the inner cavity wall of the weld and the lower end wall of the weld.

3. The intelligent welding, assembly, and testing integrated equipment for automotive panel frames according to claim 2, characterized in that, The bottom center of the lower ring body (72) is provided with a bottom groove (724), and the lower ring body (72) is provided with a through hole communicating with the second air chamber (351) on its axis; The welding inspection system includes a concave-convex rigid disk (9) and a deformation sensor (10). The outer edge of the concave-convex rigid disk (9) is fixedly and sealed to the outer edge of the bottom groove (724). The deformation sensor (10) is fixed at the center of the upper end face of the concave-convex rigid disk (9).

4. The intelligent welding, assembly, and testing integrated equipment for automotive panel frames according to claim 3, characterized in that, The concave-convex rigid disk (9) can be raised upward / concave downward under the control of the first pressure pump (36), and the deformation sensor (10) is used to monitor the upward / concave shape of the concave-convex rigid disk (9).

5. The intelligent welding, assembly, and testing integrated equipment for automotive panel frames according to claim 2, characterized in that, The lower ring body (72) has a lower opening (721) distributed around its side, and the lower opening (721) is connected to the lower seam opening (722) on its vertically downward side; The cleaning head (8) includes a lifting plate base (81), which includes an L-shaped plate part that is integrally structured and can be vertically slidably assembled with the lower opening (721) and a vertical plate part that is vertically slidably assembled with the lower seam (722). A radially movable opening box (83) is connected to the vertical plate surface of the L-shaped plate part through a telescopic guide rod (82). The opening box (83) and the vertical plate surface of the L-shaped plate part are connected by a second spring (84). A cleaning pad (85) is glued to the outer end of the opening box (83). A vent hole (811) communicating with the second air chamber (351) is provided on the vertical plate surface of the L-shaped plate part. The lower side of the upper ring body (71) has an upper opening (711) corresponding to the lower opening (721) and a scraper (86) fixed on the upper surface of the opening box (83). The scraper (86) is inclined in the upper opening (711) and is offset from the axis of the lower ring body (72).

6. The intelligent welding, assembly, and testing integrated equipment for automotive panel frames according to claim 5, characterized in that, The cleaning pad (85) is attached to the outer end of the opening box (83) by Velcro.

7. The intelligent welding, assembly, and testing integrated equipment for automotive panel frames according to claim 5, characterized in that, The lower opening (721) is connected to a lower slot (723) on its inner side. A vertical guide post (87) is fixed in the lower slot (723). A third spring (88) with its lower end connected to its bottom is sleeved on the guide post (87). The inner end of the lifting plate seat (81) is sleeved on the guide post (87) and vertically slidably assembled and connected to the upper end of the third spring (88).

8. The intelligent welding, assembly, and testing integrated equipment for automotive panel frames according to claim 1, characterized in that, The welding table (1) is provided with a material conveyor belt (4) and a second lifting system (5) distributed on both sides of the material conveyor belt (4). A fixing plate (6) for supporting and fixing the car panel frame is placed on the material conveyor belt (4), and the width of the fixing plate (6) is greater than the width of the material conveyor belt (4) and can be driven and lifted by the second lifting system (5).

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