An ISOFIX assembly bracket automatic welding device

Abstract

The application discloses an ISOFIX assembly support automatic welding device, relates to the welding technical field, and aims to solve the technical problem that a welding head is difficult to realize rectangular welding track movement for welding in a narrow space, and comprises a machine table, a support frame is arranged on the top of the machine table, the support frame comprises a side fixing plate and a top fixing frame, a lifting assembly is arranged on the side of the side fixing plate, the lifting assembly comprises a lifting block, a clamping assembly is arranged on the side wall of the lifting block in a rotating mode, an adjusting assembly is connected to the side wall of the clamping assembly, a movement assembly is arranged on the inner side wall of the top fixing frame, a plurality of welding heads are arranged on the movement assembly, and the movement assembly is used for controlling the welding heads to realize reciprocating movement in an L-shaped track. The application has the advantages that the welding heads do not need to move in a rectangular track in a narrow space, only need to reciprocate in an L-shaped track, and the complete rectangular welding track welding is realized.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and more specifically, to an automated welding apparatus for ISOFIX component brackets. Background Technology

[0002] As a core safety component of car seats, the ISOFIX component bracket mainly provides a standardized and stable connection interface for child safety seats, which is directly related to the travel safety of children in the car. Therefore, the connection rigidity, structural stability and welding precision of this component are subject to strict vehicle safety specifications.

[0003] As shown in the attached diagram of the instruction manual. Figure 1 The ISOFIX component bracket shown includes a bracket body with two ISOFIX interfaces integrally formed on one side and two mounting brackets welded to the other side. The mounting brackets are used to fix the entire ISOFIX component bracket to the car seat frame or vehicle body by bolts. Since the mounting brackets are independent stamped parts, they need to be welded to the side wall of the bracket body by a welding machine to ensure the rigidity and stability of the ISOFIX component bracket integration. The welding machine used is a plasma arc welding machine. Plasma arc welding is characterized by a small heat-affected zone, high weld strength, and low welding deformation. As a core safety component of the car seat, the ISOFIX component bracket has mandatory requirements for connection rigidity and stability. The process characteristics of plasma arc welding can meet the strength standards of this component, and it has a greater technical advantage than ordinary arc welding. At the same time, the mounting brackets are stamped parts, usually made of high-strength cold-rolled steel plates. Plasma arc welding is suitable for welding this type of material and can ensure that the mechanical properties of the welded joint meet the vehicle safety specifications.

[0004] Existing welding methods typically involve manually positioning or using fixtures to fix the support body and mounting frame, then manually operating the welding torch along a rectangular welding trajectory, or using a multi-axis robotic arm to drive the welding head to complete the rectangular welding operation. However, manual welding is not only inefficient but also makes it difficult to ensure weld consistency. While multi-axis robotic arm welding solutions can improve accuracy, they suffer from high equipment costs and complex debugging. Furthermore, when the support body and mounting frame are fixed by fixtures, the resulting rectangular welding trajectory has a relatively narrow space. When the welding head moves along the rectangular trajectory in this confined space, the multi-axis robotic arm is prone to interference with the fixture structure, making it difficult for the welding head to achieve the rectangular welding trajectory movement within the limited space. Therefore, we propose an automated welding device for ISOFIX component supports. Summary of the Invention

[0005] The purpose of this invention is to provide an automated welding device for ISOFIX component brackets to solve the technical problem that the welding head is difficult to achieve rectangular welding trajectory movement for welding in a narrow space.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automated welding device for ISOFIX component brackets, comprising a machine base, a support frame mounted on the top of the machine base, the support frame including a side fixing plate and a top fixing frame; a lifting assembly arranged on the side of the side fixing plate, the lifting assembly including a lifting block; a clamping assembly rotatably arranged on the side wall of the lifting block, the lifting block being used to drive the clamping assembly to perform lifting and lowering movements, the clamping assembly being used to position and clamp the bracket body and the mounting frame; an adjusting assembly connected to the side wall of the clamping assembly, the adjusting assembly being used to control the clamping assembly to horizontally rotate during descent and to maintain the rotated position during ascent. The state is as follows: The inner wall of the top support frame is equipped with a motion component, and multiple welding heads are arranged on the motion component. The motion component is used to control the welding heads to perform reciprocating motion along an L-shaped trajectory. When the welding head moves forward along the L-shaped trajectory, it can complete the welding operation of two adjacent sides in the rectangular welding trajectory at the splice of the support body and the mounting frame. Then, the lifting block drives the clamping component to move downward. Under the action of the adjusting component, the clamping component synchronously completes horizontal flipping, then rises and resets. The welding head returns along the original L-shaped trajectory to complete the welding operation of the other two adjacent sides in the rectangular welding trajectory, thus realizing the complete welding of the rectangular welding trajectory.

[0007] Preferably, the lifting assembly includes a cylinder installed on the top of the top support frame, the output end of the cylinder being connected to the top of the lifting block, and multiple guide plates being connected to the side wall of the side support plate, with the lifting block slidably arranged between two of the guide plates.

[0008] Preferably, the motion assembly includes a fixed plate connected to the inner sidewall of the top support frame, a drive plate slidably arranged on one sidewall of the fixed plate, a drive block connected to the sidewall of the drive plate, a motion plate arranged on the other side of the fixed plate, and a welding head mounted on the sidewall of the motion plate; a second cylinder is mounted on the sidewall of the top support frame, and the output end of the second cylinder is connected to the sidewall of the drive block; wherein, the sidewall of the fixed plate has multiple L-shaped grooves at the four corners, the sidewall of the drive plate has multiple inclined grooves at the four corners, and the sidewall of the motion plate is connected to multiple drive columns at the four corners, the drive columns being movably arranged in the L-shaped grooves and extending into the inclined grooves.

[0009] Preferably, the clamping assembly includes a rotating column rotatably arranged on the side wall of the lifting block, one end of the rotating column being connected to a fixed frame, and the side wall of the fixed frame being integrally formed with a positioning plate and a positioning frame; the top of the positioning plate is provided with a positioning groove, which is used to position the ISOFIX interface of the bracket body; the top of the positioning plate is connected to a sliding column one, and a clamping plate is slidably arranged on the sliding column one; the top of the fixed frame is equipped with a cylinder three, and the output end of the cylinder three is connected to the top of the clamping plate; the side wall of the positioning frame is connected to multiple positioning heads, which are used to position the mounting frame; the side wall of the positioning frame is connected to multiple sliding columns two, and a clamping frame is slidably arranged on the sliding columns two; the top of the positioning frame is equipped with a cylinder four, and the output end of the cylinder four is connected to the side wall of the clamping frame.

[0010] Preferably, the adjusting assembly includes a toothed plate connected to the side wall of one of the guide plates, and a ratchet mechanism connected to the outer circumferential wall of the rotating column. The ratchet mechanism is used to perform unidirectional transmission of the rotating column. The ratchet mechanism includes a ratchet body fixedly sleeved on the outer circumferential wall of the rotating column. An outer toothed ring is rotatably arranged on the side wall of the ratchet body. The outer circumferential wall of the outer toothed ring is provided with outer teeth that can mesh with the toothed plate. A plurality of pawls are rotatably arranged on the outer circumferential wall of the ratchet body. An inner tooth groove adapted to the pawls is arranged on the inner circumferential wall of the outer toothed ring. A spring is arranged between the outer circumferential wall of the ratchet body and the side wall of the pawls. The spring is used to provide a preload force for the pawls to press against the inner tooth grooves. The inner tooth grooves have an inclined surface groove structure.

[0011] Preferably, the adjustment assembly further includes a correction plate connected to the side wall of the side plate and a correction frame connected to the outer circumferential wall of the rotating column; the side wall of the correction plate is provided with an elongated groove, the end of the rotating column movably passes through the elongated groove, and the side wall of the correction plate is also provided with a correction slide groove; both ends of the correction frame are rotatably provided with rollers of the same structure, the rollers can form a rolling state with the open structure side wall at the bottom of the correction slide groove, when the correction frame is located in the correction slide groove, the correction frame is in clearance fit with the inner wall of the correction slide groove, and the rollers can form a sliding state with the inner wall of the correction slide groove.

[0012] Preferably, the correcting groove is a vertical groove structure with an open bottom; the correcting frame is a vertical frame structure, and the correcting frame and the fixing frame of the clamping assembly are perpendicular to each other.

[0013] Preferably, the adjustment assembly further includes a sealing plate connected to the other end of the rotating column, the side plate having a movable groove from top to bottom, the sealing plate being slidably arranged in the movable groove; a cover is connected to the side wall of the side plate, the movable groove and the inner cavity of the cover are closed by the sealing plate; an air inlet pipe is connected to the side wall of the cover, the air inlet pipe being connected to an external air supply device.

[0014] Preferably, the sealing plate has an air inlet on its side wall. When the sealing plate rises or falls synchronously with the rotating column, the inner cavity of the rotating column is always in communication with the inner cavity of the cover through the air inlet.

[0015] Preferably, the inner cavity of the fixed frame has an air inlet channel one, the inner cavity of the positioning frame has an air inlet channel two, and the side wall of the sliding column two has an air outlet; the inner cavity of the rotating column is connected to the air inlet channel one, and the output end of the air inlet channel one is connected to the inner cavity of the sliding column two through the air inlet channel two; the inner cavity of the clamping frame has an air blowing channel, and when the clamping frame and the positioning head clamp and fix the mounting frame, the air outlet of the sliding column two can be connected to the air inlet end of the air blowing channel; the output end of the air blowing channel is aligned with the splice of the clamped and fixed bracket body and the mounting frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention designs a clamping component that can complete a flipping motion during descent. When the welding head moves along the L-shaped trajectory, it can complete the welding operation on two adjacent sides of the rectangular welding trajectory at the junction of the support body and the mounting frame. Subsequently, the clamping component is lowered by the lifting component, causing the support body and mounting frame to move away from the welding head and then flip. After the clamping component is flipped and returns to its original position, the other two adjacent sides of the rectangular welding trajectory at the junction of the support body and the mounting frame are aligned with the welding head after moving along the L-shaped trajectory. At this point, the welding head only needs to move back along the original L-shaped trajectory to complete the welding operation on the other two adjacent sides of the rectangular welding trajectory, achieving complete welding of the rectangular welding trajectory. Throughout the process, the welding head does not need to move along the rectangular welding trajectory; it only needs to move back and forth along the L-shaped trajectory. With the automatic flipping of the clamping component, the welding operation on the support body and the mounting frame can be achieved. The operation is simple and solves the problem that after the support body and the mounting frame are fixed by the clamping component, the welding head is easily affected by the structure of the clamping component, making it difficult to achieve rectangular welding trajectory movement for welding in a narrow space.

[0017] 2. This invention utilizes a toothed plate designed on the side wall of the guide plate and a ratchet mechanism designed on the outer circumference of the rotating column. When the lifting assembly drives the clamping assembly to move downward, the outer teeth of the outer gear ring mesh with the toothed plate, driving the ratchet body to rotate via the pawl, which in turn drives the rotating column to rotate synchronously until the outer teeth of the outer gear ring disengage from the toothed plate, and the clamping assembly completes the flipping action. When the lifting assembly drives the clamping assembly to return vertically upward, the outer teeth of the outer gear ring mesh with the toothed plate again. When the outer gear ring rotates, it can compress the pawl spring through the inclined groove structure of the inner tooth groove, causing the outer gear ring to rotate in the opposite direction and form an idle state, with no rotational power transmitted to the ratchet body. The clamping assembly maintains the flipped posture and completes the upward return. This design achieves the effect of the clamping assembly automatically flipping with the lifting motion and maintaining the flipped state during the upward movement. It can achieve the switching of the workpiece welding surface without an additional drive mechanism, improving the continuity and automation of the device operation, and solving the problem of complex equipment structure and high energy consumption caused by additional flipping drive devices.

[0018] 3. This invention incorporates a correction plate and correction frame in the adjustment assembly. After the clamping assembly completes its flipping, during its upward movement, the rotating column end rises synchronously along the long groove of the correction plate. The rollers at both ends of the correction frame enter the groove through the opening structure at the bottom of the correction slide. After the rollers enter the vertical correction slide, the correction frame becomes vertical. Since the correction frame and the fixing frame of the clamping assembly are perpendicular to each other, the clamping assembly remains horizontal, thus correcting the posture of the flipped clamping assembly. This prevents the clamping assembly from tilting due to the lack of positional constraints during its ascent. It ensures that after the clamping assembly rises and resets, the splice between the support body and the mounting frame always maintains a precise position corresponding to the welding head, providing a stable and reliable positioning guarantee for the welding head to return and complete the welding of the remaining edges. Even if the clamping assembly has a large tilt, the opening structure ensures that the rollers enter the correction slide, solving the problem of tilting during the reset process after the clamping assembly flips.

[0019] 4. This invention constructs a precisely guided room-temperature airflow cooling channel by designing a sealing plate, cover, and air inlet pipe in the adjustment assembly, in conjunction with the air passage structure opened in the fixing frame, positioning frame, sliding column two, and clamping frame. After the welding head completes the welding operation on two adjacent sides of the rectangular welding trajectory, during the process of the clamping assembly driving the workpiece to descend and rotate, the external air supply equipment continuously delivers room-temperature airflow into the inner cavity of the cover through the air inlet pipe. The airflow enters the inner cavity of the rotating column through the air inlet hole of the sealing plate, and then enters the inner cavity of the sliding column two in sequence through air inlet channel one and air inlet channel two. Finally, it flows into the blowing channel of the clamping frame from the air outlet of the sliding column two, and is sprayed precisely at the splicing and welding joint of the bracket body and the mounting frame. This design achieves a directional auxiliary cooling effect on the workpiece after welding, using room-temperature airflow to directly act on the high-temperature weld. In addition to the heat-affected zone, it accelerates heat dissipation, ensuring that the workpiece can cool during the brief process of flipping and resetting the clamping assembly after welding on one side. This not only solves the problem of wasted time caused by flipping the clamping assembly, but also effectively avoids the problem of excessive secondary heat input caused by the superposition of residual heat from welding on one side and the heat input from the welding arc on the other side. This prevents the completed weld and the surrounding heat-affected zone from being reheated, leading to overheating, which in turn causes weld grain coarsening, decreased mechanical properties, and even welding defects such as cracks and melting loss. It further ensures the welding quality and structural stability of ISOFIX component brackets, and solves the problem of low natural cooling efficiency of workpieces and difficulty in meeting the temperature control requirements of double-sided welding in traditional welding processes, which in turn affects the mechanical properties of welded joints and product precision. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an ISOFIX component support structure according to the present invention.

[0021] Figure 2 This is a schematic diagram of the overall structure of the automated welding device of the present invention.

[0022] Figure 3 This is a schematic diagram of the back structure of the automated welding device of the present invention.

[0023] Figure 4 This is a schematic diagram of the disassembled structure of the side fixing plate and the top fixing frame of the present invention.

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the motion component of the present invention.

[0025] Figure 6 This is a schematic diagram of the disassembled structure of the lifting assembly and the side fixing plate of the present invention.

[0026] Figure 7 This is a schematic diagram of the adjustment component structure of the present invention.

[0027] Figure 8 This is a schematic diagram of the clamping component structure of the present invention.

[0028] Figure 9 This is a schematic diagram of the disassembled structure of the clamping component and the workpiece according to the present invention.

[0029] Figure 10 This is a schematic diagram of the clamping plate structure of the present invention.

[0030] Figure 11 This is a cross-sectional schematic diagram of the ratchet mechanism of the present invention.

[0031] Figure 12 This is a schematic diagram of a motion state of the ratchet mechanism of the present invention.

[0032] Figure 13 This is a schematic diagram of the correction plate and correction frame structure of the present invention.

[0033] Figure 14 This is a cross-sectional structural diagram of the side fixing plate and rotating column of the present invention.

[0034] Figure 15 This is a cross-sectional structural diagram of the fixing frame and positioning frame of the present invention.

[0035] Figure 16 This is a schematic diagram of one usage state of the present invention.

[0036] Explanation of the labels in the diagram: 1. Support frame; 2. Mounting bracket; 3. Welding head; 4. Machine base; 5. Support frame; 6. Lifting assembly; 7. Clamping assembly; 8. Adjustment assembly; 9. Motion assembly; 101. ISOFIX interface; 51. Side fixing plate; 52. Top fixing frame; 5101, Guide plate; 5102, Movable groove; 5103, Cover; 5104, Air inlet pipe; 601. Lifting block; 602. Cylinder 1; 701. Rotating column; 702. Fixing frame; 7021. Air inlet channel one; 703. Positioning plate; 7031. Positioning groove; 7032. Sliding column one; 704. Positioning frame; 7041. Positioning head; 7042. Air inlet channel two; 705. Clamping plate; 706. Cylinder three; 707. Sliding column two; 7071. Air outlet; 708. Clamping frame; 7081. Air blowing channel; 709. Cylinder four; 801. Toothed plate; 802. Ratchet mechanism; 8021. Ratchet body; 8022. External gear ring; 8023. Pad; 8024. Spring; 803. Correcting plate; 8031. Long groove; 8032. Correcting slide; 804. Correcting frame; 805. Roller; 806. Sealing plate; 8061. Air inlet; 901, Fixed plate; 9011, L-shaped slide; 902, Drive plate; 9021, Inclined groove; 903, Drive block; 904, Moving plate; 9041, Drive column; 905, Cylinder II. Detailed Implementation

[0037] Example 1, as Figures 1 to 16 As shown, this embodiment provides an automated welding device for ISOFIX component brackets, including a machine base 4. A support frame 5 is mounted on the top of the machine base 4. The support frame 5 includes a side fixing plate 51 and a top fixing frame 52. A lifting assembly 6 is arranged on the side of the side fixing plate 51. The lifting assembly 6 includes a lifting block 601. A clamping assembly 7 is rotatably arranged on the side wall of the lifting block 601. The lifting block 601 is used to drive the clamping assembly 7 to perform lifting and lowering movements. The clamping assembly 7 is used to position and clamp the bracket body 1 and the mounting frame 2. An adjustment assembly 8 is connected to the side wall of the clamping assembly 7. The adjustment assembly 8 is used to control the clamping assembly 7 to horizontally rotate during descent and to maintain the rotated position during ascent. Status; The inner wall of the top support frame 52 is equipped with a motion component 9, on which two welding heads 3 are arranged. The motion component 9 is used to control the welding heads 3 to perform reciprocating motion along an L-shaped trajectory. When the welding head 3 moves forward along the L-shaped trajectory, it can complete the welding operation of two adjacent sides in the rectangular welding trajectory at the splice of the support body 1 and the mounting frame 2. Then, the lifting block 601 drives the clamping component 7 to move downward. Under the action of the adjusting component 8, the clamping component 7 synchronously completes the horizontal flip, then rises and resets. Through the welding head 3 moving back along the original L-shaped trajectory, the welding operation of the other two adjacent sides in the rectangular welding trajectory is completed, realizing the complete welding of the rectangular welding trajectory.

[0038] This invention designs the clamping component 7 to complete a flipping motion during descent. When the welding head 3 moves along the L-shaped trajectory, it can complete the welding operation on two adjacent sides of the rectangular welding trajectory at the joint of the support body 1 and the mounting frame 2. Subsequently, the clamping component 7 is lowered by the lifting component 6, causing the clamped support body 1 and mounting frame 2 to move away from the welding head 3 before flipping. After the flipped clamping component 7 rises and resets, the other two adjacent sides of the rectangular welding trajectory at the joint of the support body 1 and the mounting frame 2 are aligned with the welding head 3 after its forward movement along the L-shaped trajectory. At this point, only... The welding head 3 needs to return along the original L-shaped trajectory to perform welding operations on the other two adjacent sides of the rectangular welding trajectory, thus achieving complete welding of the rectangular welding trajectory. Throughout the process, the welding head 3 does not need to perform rectangular welding trajectory movements, but only needs to perform reciprocating movements along the L-shaped trajectory. With the automatic flipping of the clamping component 7, the welding operation on the bracket 1 and the mounting frame 2 can be achieved. The operation is simple and solves the problem that after the bracket 1 and the mounting frame 2 are fixed by the clamping component, the welding head 3 is easily affected by the structure of the clamping component, making it difficult to achieve rectangular welding trajectory movements for welding in a narrow space.

[0039] In an embodiment of the present invention, the lifting assembly 6 includes a cylinder 602 mounted on the top of the top support frame 52. The output end of the cylinder 602 is connected to the top of the lifting block 601. A plurality of guide plates 5101 are connected to the side wall of the side support plate 51. The lifting block 601 is slidably arranged between two guide plates 5101. The lifting movement of the lifting block 601 is controlled by the cylinder 602, thereby driving the lifting of the clamping assembly 7.

[0040] In an embodiment of the present invention, the motion component 9 includes a fixed plate 901 connected to the inner sidewall of the top support frame 52. A drive plate 902 is slidably arranged on one sidewall of the fixed plate 901, and a drive block 903 is connected to the sidewall of the drive plate 902. A motion plate 904 is arranged on the other side of the fixed plate 901, and a welding head 3 is installed on the sidewall of the motion plate 904. A second cylinder 905 is installed on the sidewall of the top support frame 52, and the output end of the second cylinder 905 is connected to the sidewall of the drive block 903. The sidewall of the fixed plate 901 has multiple L-shaped grooves 9011 at the four corners, the sidewall of the drive plate 902 has multiple inclined grooves 9021 at the four corners, and the sidewall of the motion plate 904 has multiple drive columns 9041 connected to the four corners. The drive columns 9041 are movably arranged in the L-shaped grooves 9011 and extend into the inclined grooves 9021. When cylinder 905 is working, it drives the drive plate 902 to slide along the side wall of the fixed plate 901 via the drive block 903. When the inclined groove 9021 moves with the drive plate 902, it generates a guiding force on the drive column 9041. At the same time, the L-shaped groove 9011 restricts the movement trajectory of the drive column 9041. The two work together to drive the moving plate 904 and the welding head 3 to complete the reciprocating motion of the L-shaped trajectory.

[0041] In an embodiment of the present invention, the clamping assembly 7 includes a rotating column 701 rotatably arranged on the side wall of the lifting block 601. One end of the rotating column 701 is connected to a fixing frame 702. The side wall of the fixing frame 702 is integrally formed with a positioning plate 703 and a positioning bracket 704. The top of the positioning plate 703 is provided with a positioning groove 7031, which is used to position the ISOFIX interface 101 of the bracket body 1. The top of the positioning plate 703 is connected to a sliding column 7032, on which a sliding cloth slides. A clamping plate 705 is provided, and a cylinder 706 is installed on the top of the fixing frame 702. The output end of the cylinder 706 is connected to the top of the clamping plate 705. Multiple positioning heads 7041 are connected to the side wall of the positioning frame 704. The positioning heads 7041 are used to position the mounting frame 2. Multiple sliding columns 707 are connected to the side wall of the positioning frame 704. A clamping frame 708 is slidably arranged on the sliding columns 707. A cylinder 709 is installed on the top of the positioning frame 704. The output end of the cylinder 709 is connected to the side wall of the clamping frame 708. The positioning plate 703 precisely positions the ISOFIX interface 101 of the bracket body 1 through the positioning groove 7031 opened at the top. Then, the cylinder 706 at the top of the fixing frame 702 drives the clamping plate 705 on the sliding column 7032 to slide downward, thereby achieving a stable clamping of the bracket body 1. The positioning frame 704 positions the mounting frame 2 through multiple positioning heads 7041 connected to the side wall. In conjunction with the cylinder 709 at the top of the positioning frame 704, the clamping frame 708 on the sliding column 707 is driven to slide laterally, thereby completing the clamping and fixing of the mounting frame 2. Finally, the precise positioning and stable clamping of the bracket body 1 and the mounting frame 2 are achieved, providing a reliable guarantee for subsequent welding operations.

[0042] In an embodiment of the present invention, the adjusting component 8 includes a toothed plate 801 connected to the side wall of one of the guide plates 5101, and a ratchet mechanism 802 connected to the outer circumferential wall of the rotating column 701. The ratchet mechanism 802 is used to perform unidirectional transmission on the rotating column 701. The ratchet mechanism 802 includes a ratchet body 8021 fixedly sleeved on the outer circumferential wall of the rotating column 701. An external gear ring 8022 is rotatably arranged on the side wall of the ratchet body 8021. The outer circumference of the 22 ring has external teeth that can mesh with the toothed plate 801. The outer circumference of the ratchet body 8021 has multiple pawls 8023 rotatably arranged. The inner circumference of the outer toothed ring 8022 has internal tooth grooves that are adapted to the pawls 8023. A spring 8024 is arranged between the outer circumference of the ratchet body 8021 and the side wall of the pawl 8023. The spring 8024 is used to provide a preload force for the pawl 8023 to press against the internal tooth groove. The internal tooth groove has a groove structure with an inclined surface.

[0043] This invention utilizes a toothed plate 801 designed on the side wall of the guide plate 5101 and a ratchet mechanism 802 designed on the outer circumferential wall of the rotating column 701. When the lifting assembly 6 drives the clamping assembly 7 to move downward, the outer teeth of the outer gear ring 8022 engage with the toothed plate 801, driving the ratchet body 8021 to rotate via the pawl 8023, which in turn drives the rotating column 701 to rotate synchronously until the outer teeth of the outer gear ring 8022 disengage from the toothed plate 801, and the clamping assembly 7 completes its flipping action. When the lifting assembly 6 drives the clamping assembly 7 to return upward in the vertical direction, the outer teeth of the outer gear ring 8022 engage with the toothed plate 801 again. When the gear ring 8022 rotates, it can compress the pawl 8023 and spring 8024 by squeezing the inclined groove structure of the inner tooth groove, so that the outer gear ring 8022 rotates in the opposite direction to form an idle state, and no rotational power is transmitted to the ratchet body 8021. The clamping component 7 maintains the flipped posture to complete the upward return. This design realizes that the clamping component 7 can automatically complete the flipping with the lifting movement and maintain the flipped state when rising. The switching of the workpiece welding surface can be realized without an additional drive mechanism, which improves the continuity and automation of the device operation and solves the problem of complex equipment structure and high energy consumption caused by additional configuration of flipping drive device.

[0044] In an embodiment of the present invention, the adjusting assembly 8 further includes a correcting plate 803 connected to the side wall of the side fixing plate 51, and a correcting frame 804 connected to the outer circumferential wall of the rotating column 701; the side wall of the correcting plate 803 is provided with an elongated groove 8031, the end of the rotating column 701 movably passes through the elongated groove 8031, and the side wall of the correcting plate 803 is also provided with a correcting slide 8032, which is a vertical slide structure with an open bottom; both ends of the correcting frame 804 are rotatable. The rollers 805 with the same structure are arranged. The correction frame 804 is a vertical frame structure. The correction frame 804 and the fixing frame 702 of the clamping assembly 7 are perpendicular to each other. The rollers 805 can roll with the side wall of the open structure at the bottom of the correction slide 8032. When the correction frame 804 is located in the correction slide 8032, the correction frame 804 and the inner wall of the correction slide 8032 are in clearance fit, and the rollers 805 can slide with the inner wall of the correction slide 8032.

[0045] This invention incorporates a correction plate 803 and a correction frame 804 within the adjusting assembly 8. When the clamping assembly 7 completes its rotation, during its upward movement, the end of the rotating column 701 rises synchronously along the elongated groove 8031 ​​of the correction plate 803. Rollers 805 at both ends of the correction frame 804 enter the groove through the opening at the bottom of the correction slide 8032. Once the rollers 805 enter the vertical correction slide 8032, the correction frame 804 becomes vertical. Since the correction frame 804 and the fixing frame 702 of the clamping assembly 7 are perpendicular to each other, the clamping assembly 7 remains horizontal. This system corrects the posture of the flipped clamping component 7, preventing it from tilting due to the lack of positional constraints during the ascent. It ensures that after the clamping component 7 rises and resets, the joint between the support body 1 and the mounting frame 2 always maintains a precise position corresponding to the welding head 3. This provides a stable and reliable positioning guarantee for the welding head 3 to complete the welding of the remaining edges during its return stroke. Even if the clamping component 7 has a large tilt, the open structure ensures that the roller 805 can enter the correction groove 8032, thus solving the problem of the clamping component 7 tilting during the reset process after flipping.

[0046] In an embodiment of the present invention, the adjusting component 8 further includes a sealing plate 806 connected to the other end of the rotating column 701. The side plate 51 has a movable groove 5102 from top to bottom. The sealing plate 806 is slidably arranged in the movable groove 5102. The top of the machine base 4 has a corresponding slot to provide the necessary space for the sealing plate 806 to move down. The side wall of the side plate 51 is connected to a cover 5103. The movable groove 5102 and the inner cavity of the cover 5103 are closed by the sealing plate 806. The side wall of the cover 5103 is connected to an air inlet pipe 5104. The air inlet pipe 5104 is connected to an external air supply device. The external air supply device can deliver room temperature airflow into the air inlet pipe 5104.

[0047] In another embodiment of the present invention, the sealing plate 806 has an air inlet 8061 on its side wall. When the sealing plate 806 rises or falls synchronously with the rotating column 701, the inner cavity of the rotating column 701 is always in communication with the inner cavity of the cover 5103 through the air inlet 8061. That is, the air inlet 8061 is always kept in the inner cavity of the cover 5103, so that during the descent of the clamping assembly 7, the external air supply device delivers room temperature airflow into the inner cavity of the cover 5103 through the air inlet pipe 5104, and can always deliver it into the inner cavity of the rotating column 701 through the air inlet 8061.

[0048] In another embodiment of the present invention, the inner cavity of the fixed frame 702 is provided with an air inlet channel 7021, the inner cavity of the positioning frame 704 is provided with an air inlet channel 7042, and the side wall of the sliding column 707 is provided with an air outlet 7071; the inner cavity of the rotating column 701 is connected to the air inlet channel 7021, and the output end of the air inlet channel 7021 is connected to the inner cavity of the sliding column 707 through the air inlet channel 7042; the inner cavity of the clamping frame 708 is provided with an air blowing channel 7081. When the clamping frame 708 and the positioning head 7041 clamp and fix the mounting frame 2, the air outlet 7071 of the sliding column 707 can be connected to the air inlet end of the air blowing channel 7081; the output end of the air blowing channel 7081 is aligned with the splice of the clamped and fixed bracket body 1 and the mounting frame 2.

[0049] This invention constructs a precisely guided room-temperature airflow cooling channel by designing a sealing plate 806, a cover 5103, and an air inlet pipe 5104 in the adjusting component 8, in conjunction with the air passage structure opened in the fixing frame 702, positioning frame 704, sliding column 2 707, and clamping frame 708. After the welding head 3 completes the welding operation of two adjacent sides in the rectangular welding trajectory, during the process of the clamping component 7 driving the workpiece to descend and rotate, the external air supply equipment continuously delivers room-temperature airflow to the inner cavity of the cover 5103 through the air inlet pipe 5104. The airflow enters the inner cavity of the rotating column 701 through the air inlet hole 8061 of the sealing plate 806, and then enters the inner cavity of the sliding column 2 707 through the first air inlet channel 7021 and the second air inlet channel 7042 in sequence. Finally, it flows from the air outlet 7071 of the sliding column 2 into the blowing channel 7081 of the clamping frame 708, and is sprayed precisely at the splicing and welding joint of the bracket body 1 and the mounting frame 2. This design This method achieves directional assisted cooling of the workpiece after welding. By utilizing ambient temperature airflow directly to the high-temperature weld and heat-affected zone, it accelerates heat dissipation and ensures that the workpiece can be cooled during the brief process of flipping and resetting the clamping component 7 after welding on one side. This not only solves the problem of wasted time caused by flipping the clamping component 7, but also effectively avoids the problem of excessive secondary heat input caused by the superposition of residual heat from welding on one side and the heat input from the welding arc on the other side. This would prevent the completed weld and surrounding heat-affected zone from being reheated, leading to overheating, which in turn causes weld grain coarsening, decreased mechanical properties, and even welding defects such as cracks and melting. Furthermore, it ensures the welding quality and structural stability of the ISOFIX component bracket and solves the problems of low natural cooling efficiency of the workpiece and difficulty in meeting the temperature control requirements of double-sided welding in traditional welding processes, which in turn affects the mechanical properties of the welded joint and the product precision.

[0050] Example 2: This example provides a method for using an automated welding device for ISOFIX component brackets, including the following steps: S1. Workpiece positioning and clamping operation: Align the ISOFIX interface 101 of the bracket body 1 with the positioning groove 7031 on the top of the positioning plate 703, start the cylinder 3 706 to drive the clamping plate 705 to slide down along the slide column 1 7032, clamping and fixing the bracket body 1; at the same time, place the mounting bracket 2 against the side wall of the positioning frame 704 and position it through the positioning head 7041, start the cylinder 4 709 to drive the clamping frame 708 to move laterally along the slide column 2 707, clamping and fixing the mounting bracket 2, thus completing the positioning and clamping of the bracket body 1 and the mounting bracket 2. S2. During the forward welding operation of the welding head, start cylinder 1 602 to drive lifting block 601 to move clamping assembly 7 and workpiece upward until the workpiece on clamping assembly 7 enters the welding station. Then start cylinder 2 905. Its output end drives drive plate 902 to slide along the side wall of fixed plate 901 through drive block 903. Inclined groove 9021 guides drive column 9041. With the trajectory restriction of L-shaped slide groove 9011, drive moving plate 904 and welding head 3 to move forward along L-shaped trajectory. During the movement of welding head 3, welding operation is performed on two sets of adjacent sides in the rectangular welding trajectory at the splice of bracket 1 and mounting frame 2 until the L-shaped movement trajectory is completed. Welding head 3 stops working. S3. Workpiece flipping and cooling operation: After the adjacent sides are welded, cylinder 602 is started to drive lifting block 601 to move clamping assembly 7 and workpiece downward. During the descent, outer gear ring 8022 meshes with toothed plate 801, and ratchet body 8021 and rotating column 701 are rotated through pawl 8023 to achieve horizontal flipping of workpiece until outer gear ring 8022 disengages from toothed plate 801. At the same time, external air supply equipment delivers room temperature airflow to cover 5103 through air inlet pipe 5104. The airflow passes through air inlet hole 8061, inner cavity of rotating column 701, air inlet channel 7021, air inlet channel 7042, inner cavity of sliding column 707 and blowing channel 7081, and is precisely sprayed onto the weld for auxiliary cooling. S4. In the flip-up state, the cylinder 602 reverses its operation, driving the lifting block 601 to lift the clamping assembly 7. During the lifting process, the outer gear ring 8022 re-engages with the gear plate 801 but rotates freely, keeping the workpiece in the flipped state. The roller 805 of the correction frame 804 enters the groove from the bottom opening of the correction slide 8032, correcting the workpiece posture to keep it horizontal until the clamping assembly 7 is lifted and reset. S5. Reverse welding operation: Start cylinder 2 905 to work in reverse, drive welding head 3 to make a return motion along the original L-shaped trajectory, and complete the welding operation of the other two sets of adjacent sides in the rectangular welding trajectory. S5. Unloading operation: After all welding is completed, the lifting component 6 controls the clamping component 7 to move down and expose it again. Then, cylinder 3 706 drives the clamping plate 705 to release the clamping of the bracket body 1, and cylinder 4 709 drives the clamping frame 708 to release the clamping of the mounting frame 2, and remove the welded ISOFIX component bracket.

[0051] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. An automated welding device for ISOFIX component brackets, characterized in that, Includes a machine base (4), and a support frame (5) is installed on the top of the machine base (4). The support frame (5) includes a side fixing plate (51) and a top fixing frame (52). A lifting assembly (6) is arranged on the side of the side plate (51), and the lifting assembly (6) includes a lifting block (601). The lifting block (601) has a clamping assembly (7) rotatably arranged on its side wall. The lifting block (601) is used to drive the clamping assembly (7) to perform lifting and lowering movements. The clamping assembly (7) is used to position and clamp the bracket (1) and the mounting bracket (2). The clamping assembly (7) has an adjustment assembly (8) connected to its side wall. The adjustment assembly (8) is used to control the clamping assembly (7) to perform horizontal flipping during the descent process and to maintain the flipped state during the ascending process. The inner wall of the top support frame (52) is provided with a motion component (9), and multiple welding heads (3) are arranged on the motion component (9). The motion component (9) is used to control the welding heads (3) to perform reciprocating motion in an L-shaped trajectory. The motion component (9) includes a fixed plate (901) connected to the inner side wall of the top support frame (52), a drive plate (902) slidably arranged on one side wall of the fixed plate (901), a drive block (903) connected to the side wall of the drive plate (902), a motion plate (904) arranged on the other side of the fixed plate (901), and a welding head (3) installed on the side wall of the motion plate (904); a second cylinder (905) is installed on the side wall of the top support frame (52), and the output end of the second cylinder (905) is connected to the side wall of the drive block (903); The fixed plate (901) has multiple L-shaped grooves (9011) at the four corners of its sidewall, the drive plate (902) has multiple inclined grooves (9021) at the four corners of its sidewall, and the moving plate (904) has multiple drive columns (9041) at the four corners of its sidewall. The drive columns (9041) are movably arranged in the L-shaped grooves (9011) and extend into the inclined grooves (9021). When the welding head (3) moves forward along the L-shaped trajectory, it can complete the welding operation of two adjacent sides in the rectangular welding trajectory at the splicing point of the bracket (1) and the mounting frame (2); then the lifting block (601) drives the clamping component (7) to move downward. Under the action of the adjusting component (8), the clamping component (7) synchronously completes the horizontal flipping and then rises to reset. The welding head (3) moves back along the original L-shaped trajectory to complete the welding operation of the other two adjacent sides in the rectangular welding trajectory, thus realizing the complete welding of the rectangular welding trajectory.

2. The automated welding device for ISOFIX component brackets according to claim 1, characterized in that, The lifting assembly (6) includes a cylinder (602) installed on the top of the top support frame (52). The output end of the cylinder (602) is connected to the top of the lifting block (601). The side wall of the side support plate (51) is connected to a plurality of guide plates (5101). The lifting block (601) is slidably arranged between two of the guide plates (5101).

3. The automated welding device for ISOFIX component brackets according to claim 2, characterized in that, The clamping assembly (7) includes a rotating column (701) rotatably arranged on the side wall of the lifting block (601), and a fixed frame (702) is connected to one end of the rotating column (701). The fixed frame (702) has a positioning plate (703) and a positioning frame (704) integrally formed on the side wall of the fixed frame (702). The positioning plate (703) has a positioning groove (7031) on its top. The positioning groove (7031) is used to position the ISOFIX interface (101) of the bracket body (1). The top of the positioning plate (703) is connected to a sliding column (7032). A clamping plate (705) is slidably arranged on the sliding column (7032). A cylinder (706) is installed on the top of the fixing frame (702). The output end of the cylinder (706) is connected to the top of the clamping plate (705). The positioning frame (704) has multiple positioning heads (7041) connected to its side wall. The positioning heads (7041) are used to position the mounting frame (2). The positioning frame (704) has multiple sliding columns (707) connected to its side wall. A clamping frame (708) is slidably arranged on the sliding columns (707). A cylinder (709) is installed on the top of the positioning frame (704). The output end of the cylinder (709) is connected to the side wall of the clamping frame (708).

4. The automated welding device for ISOFIX component brackets according to claim 3, characterized in that, The adjustment assembly (8) includes a toothed plate (801) connected to the side wall of one of the guide plates (5101) and a ratchet mechanism (802) connected to the outer circumferential wall of the rotating column (701). The ratchet mechanism (802) is used to perform unidirectional transmission on the rotating column (701). The ratchet mechanism (802) includes a ratchet body (8021) fixedly sleeved on the outer circumference of the rotating column (701). An outer gear ring (8022) is rotatably arranged on the side wall of the ratchet body (8021). The outer circumference of the outer gear ring (8022) is provided with an outer tooth that can mesh with the toothed plate (801). A plurality of pawls (8023) are rotatably arranged on the outer circumference of the ratchet body (8021). The inner circumference of the outer gear ring (8022) is provided with an inner tooth groove that is adapted to the pawls (8023). A spring (8024) is arranged between the outer circumference of the ratchet body (8021) and the side wall of the pawls (8023). The spring (8024) is used to provide a preload force for the pawls (8023) to press against the inner tooth groove. The inner tooth groove has an inclined surface groove structure.

5. The automated welding device for ISOFIX component brackets according to claim 4, characterized in that, The adjustment assembly (8) also includes a correction plate (803) connected to the side wall of the side plate (51) and a correction frame (804) connected to the outer circumferential wall of the rotating column (701). The side wall of the correction plate (803) is provided with an elongated groove (8031), and the end of the rotating column (701) moves through the elongated groove (8031). The side wall of the correction plate (803) is also provided with a correction slide groove (8032). Both ends of the correction frame (804) are rotatably equipped with rollers (805) of the same structure. The rollers (805) can roll with the sidewall of the open structure at the bottom of the correction groove (8032). When the correction frame (804) is located in the correction groove (8032), the correction frame (804) is in clearance fit with the inner wall of the correction groove (8032), and the rollers (805) can slide with the inner wall of the correction groove (8032).

6. The automated welding device for ISOFIX component brackets according to claim 5, characterized in that, The correcting slide (8032) is a vertical slide structure with an open bottom; the correcting frame (804) is a vertical frame structure, and the correcting frame (804) and the fixing frame (702) of the clamping assembly (7) are perpendicular to each other.

7. The automated welding device for ISOFIX component brackets according to claim 6, characterized in that, The adjustment assembly (8) also includes a sealing plate (806) connected to the other end of the rotating column (701), and the side fixing plate (51) is provided with a movable groove (5102) from top to bottom, and the sealing plate (806) is slidably arranged in the movable groove (5102). The side wall of the side plate (51) is connected to the cover (5103), and the movable groove (5102) and the inner cavity of the cover (5103) are closed by the sealing plate (806); The side wall of the cover (5103) is connected to an air inlet pipe (5104), which is connected to an external air supply device.

8. The automated welding device for ISOFIX component brackets according to claim 7, characterized in that, The sealing plate (806) has an air inlet (8061) on its side wall. When the sealing plate (806) rises or falls synchronously with the rotating column (701), the inner cavity of the rotating column (701) is always in communication with the inner cavity of the cover (5103) through the air inlet (8061).

9. The automated welding device for ISOFIX component brackets according to claim 8, characterized in that, The fixed frame (702) has an air inlet channel one (7021) in its inner cavity, the positioning frame (704) has an air inlet channel two (7042) in its inner cavity, and the sliding column two (707) has an air outlet (7071) on its side wall. The inner cavity of the rotating column (701) is connected to the first air intake channel (7021), and the output end of the first air intake channel (7021) is connected to the inner cavity of the second sliding column (707) through the second air intake channel (7042); The clamping frame (708) has an air blowing channel (7081) in its inner cavity. When the clamping frame (708) and the positioning head (7041) clamp and fix the mounting frame (2), the air outlet (7071) of the sliding column (707) can be connected with the air inlet of the air blowing channel (7081). The output end of the air blowing channel (7081) is aligned with the splice of the clamped and fixed bracket (1) and the mounting frame (2).

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