Inverted water cutting support welding device

Abstract

The utility model relates to a kind of inverted water cutting support welding equipment, including rack, electric box, ultrasonic welding device, pressing device and controller, the area of rack front side near top is welding area;The ultrasonic welding device is installed in the inner chamber of rack, and the welding torch of ultrasonic welding device is towards the welding area;The support block for supporting workpiece is equipped in the welding area periphery of the rack front side;Maintenance opening is opened in the back of the rack, electric box is pivotally connected with the back of rack in hinge mode and can be rotated to open or close the maintenance opening;The ultrasonic welding device, electric box, cylinder are electrically connected with controller respectively, electric box is used to power supply to the ultrasonic welding device, cylinder and controller, controller is used to control the start-stop of ultrasonic welding device and cylinder.Back maintenance opening cooperation rotatable electric box is convenient for quick maintenance and reduces downtime;Whole machine structure is compact, occupies small, and comprehensive cost is low.

Description

Technical Field

[0001] This utility model relates to welding equipment for inverted water-cutting support. Background Technology

[0002] Currently, power ultrasonic welding is widely used for plastic welding of automotive interior parts. However, for the assembly relationship between the car door panel and the water cutter bracket at a large angle (about 70°), traditional equipment often relies on multi-station staggered welding or general-purpose welding machines with large crossbeam / slide table structures, or develops special longitudinal welding machines that require frequent mold changes. These methods generally suffer from problems such as large equipment size, long structural span, complex energy transmission path, large workload for positioning and adjustment, slow model changeover and repeated assembly and disassembly affecting the life of molds and fixtures, poor adaptability to different car models and weld point distributions, and limited safety and consistency due to the open operating area during the welding process. Utility Model Content

[0003] The purpose of this utility model is to provide a water-cutting bracket welding equipment with a compact structure, capable of covering multiple welding points in a single workstation, having reliable clamping and quick locking, and enabling rapid adjustment and convenient maintenance of the welding head within a limited space.

[0004] The purpose of this utility model is achieved as follows: A welding device for an inverted water-cutting support includes a frame, an electrical box, an ultrasonic welding device, a clamping device, and a controller. The area near the top of the front side of the frame is the welding area. The ultrasonic welding device is installed inside the frame cavity, and the welding torch of the ultrasonic welding device is facing the welding area. The front side of the frame is provided with a support block for supporting the workpiece located around the welding area; An inspection port is provided on the back of the frame. The electrical box is pivotally connected to the back of the frame by a hinge and can be rotated to open or close the inspection port. The clamping device includes a plate that can rotate around the top of the frame, a spring balancer connected to the plate, and a cylinder set on the top of the frame. The plate is provided with a clamp that matches the shape of an automobile door panel. The side wall of the plate is provided with a locking block with a locking hole. The piston rod of the cylinder can be inserted into or removed from the locking hole to lock or unlock the plate. The ultrasonic welding device, the electrical box, and the cylinder are electrically connected to the controller. The electrical box is used to supply power to the ultrasonic welding device, the cylinder, and the controller, and the controller is used to control the start and stop of the ultrasonic welding device and the cylinder.

[0005] The ultrasonic welding device is arranged in an inverted structure within the frame cavity, with the welding torch facing the upper front welding area. The workpiece (an assembly of a car door panel, a water-cutting bracket, and decorative parts) is supported and positioned by the front support block. During operation, the operator overcomes the pull force of the spring balancer to flip the top rotatable plate downwards to the clamping position. The cylinder drives the piston rod to insert laterally into the locking hole of the plate locking block to achieve mechanical locking. After welding, the piston rod retracts, and the plate automatically returns to its original position under the action of the spring balancer. This forms a continuous cycle of feeding, clamping, locking, welding, unlocking, and part removal, improving welding consistency.

[0006] During the welding process, the car door panel is positioned between the operator and the welding torch. The front support block and clamps stably press the workpiece, and the car door panel forms a forward physical barrier, preventing the operator from accidentally touching the welding head and intercepting the small amount of flying debris and hot melt droplets that may be generated during the welding process, so that the workpiece effectively shields the welding area to improve the safety of the operation.

[0007] The rear access panel, combined with the rotatable electrical box, facilitates quick maintenance and reduces downtime; the machine has a compact structure, small footprint, and low overall cost.

[0008] The objective of this utility model can also be achieved by the following technical measures: Furthermore, it also includes a first sensor for detecting the placement of the workpiece, the first sensor being mounted on the frame and electrically connected to the controller, with its sensing end facing the front of the frame.

[0009] The first sensor installed on the front side of the frame detects whether the workpiece is placed in place and is interlocked with the controller. The welding process is only allowed when the placement conditions are met, eliminating misaligned welding, missing welding and false welding from the source, reducing the rework and scrap rate, reducing the reliance on manual visual inspection, standardizing the loading action and improving the stability of the production cycle.

[0010] Furthermore, it also includes a second sensor for detecting the rotation of the plate into position. The second sensor is located on the top of the frame and electrically connected to the controller, with its sensing end facing the top of the frame.

[0011] The second sensor installed on the top of the frame monitors the rotation position of the plate and serves as a prerequisite for starting welding. Welding is only allowed to start when the plate is flipped to the predetermined position and the locking mechanism is ready. This ensures that the clamping force, welding gap and welding head alignment are within the process window, avoiding collisions and quality fluctuations caused by the fixture not being locked or misaligned, and significantly improving process safety and repeatability.

[0012] Furthermore, both the first sensor and the second sensor are displacement sensors.

[0013] Both the first and second sensors are displacement-type devices that can output continuous displacement and set multiple threshold levels, enabling the equipment to adapt to different vehicle models and assembly tolerances. This facilitates the recording of positioning stroke and clamping displacement for process monitoring and preventive maintenance, while also improving anti-interference capabilities and reducing false triggering and shutdown, thus enhancing the overall reliability of the production line.

[0014] Furthermore, one side of the electrical box is connected to the frame via a hinge, and the other side is provided with a locking groove. The frame is provided with a locking plate. When the electrical box rotates and approaches the back of the frame, the locking plate slides into the locking groove to lock the electrical box to the frame.

[0015] The electrical box is connected to the frame via a hinge and is quickly locked using a locking plate and locking groove. During maintenance, the rear inspection port can be opened simply by rotating the electrical box, without the need to disassemble the panel and cables, which significantly shortens the time for troubleshooting and parameter adjustment. In the locked state, the electrical box and the frame are firmly connected, have good vibration resistance, and the wiring is more compact, which is conducive to long-term stable operation.

[0016] Furthermore, it also includes a support rod, a hook body is provided at the center of the plate, the spring balancer is installed on the support rod and connected to the hook body through the spring rope of the spring balancer, and the controller is provided on the support rod.

[0017] The spring balancer is mounted on the support rod and connected to the center hook of the plate via a spring rope. It can counteract the weight of the clamp, making the flipping and returning actions easy and smooth, reducing operating force and impact on the mechanism, and extending the life of the clamp and hinge components. The controller is arranged on the support rod, which can shorten the signal and power cable path, reduce electromagnetic interference, and facilitate debugging and maintenance.

[0018] Furthermore, it also includes adjusting bolts, and a connecting plate extends downward from the top of the inner cavity of the frame. Multiple connecting holes are spaced apart along the length of the connecting plate. The adjusting bolts pass through the corresponding connecting holes to lock the ultrasonic welding device, thereby realizing the position adjustment of the ultrasonic welding device.

[0019] The connecting plate extending downward from the top of the inner cavity of the frame is equipped with multiple sets of connecting holes. By adjusting the bolts and locking the ultrasonic welding device through the holes, the position can be quickly adjusted and repeatedly positioned. The equipment can be precisely finely adjusted in the longitudinal, transverse and height directions to match different weld point distributions, reducing the need to change the entire set of tooling, shortening the changeover time and improving welding consistency.

[0020] Furthermore, casters are installed on the bottom of the electrical box on the side away from the hinge.

[0021] Casters are installed on the bottom of the electrical box on the side away from the hinge. They can support the weight of the electrical box and provide guidance during opening and closing, allowing a single person to operate it smoothly and preventing the bottom of the electrical box from hitting the ground. This further improves maintenance convenience and space utilization.

[0022] The beneficial effects of this utility model are as follows: This invention employs an inverted structure, arranging the ultrasonic welding device within the frame cavity and positioning the welding torch directly in front of the upper welding area. The workpiece (an assembly pre-assembled from a car door panel, a water-cutting bracket, and decorative parts) is supported and positioned by a front support block. During operation, the operator overcomes the pull-back force of the spring balancer to flip the top rotatable plate downwards to the clamping position. The cylinder drives the piston rod to insert laterally into the locking hole of the plate's locking block, achieving mechanical locking. After welding, the piston rod retracts, and the plate automatically returns to its original position under the action of the spring balancer. This forms a continuous cycle of feeding, clamping, locking, welding, unlocking, and removing the part, improving welding consistency.

[0023] In this invention, during the welding process, the car door panel is positioned between the operator and the welding torch. The front support block and clamps stably press the workpiece, and the car door panel forms a forward physical barrier, preventing the operator from accidentally touching the welding head and intercepting the small amount of flying debris and hot melt droplets that may be generated during the welding process, so that the workpiece effectively shields the welding area to improve operational safety.

[0024] This invention allows for the smooth opening of the electrical box, which is hinged to the back of the frame, after the power and gas supply are turned off. Casters support the load, enabling a single person to easily open the rear inspection port. The adjusting bolts on the connecting plate at the top of the frame's inner cavity are loosened. Based on the multiple sets of connecting holes and scales arranged along the length of the connecting plate, the welding device is finely adjusted longitudinally, laterally, and vertically according to process requirements, ensuring the welding torch is coaxial or aligned with each welding point. The adjusting bolts are then tightened again to the specified torque. A short-circuit or test weld is performed to verify the alignment and penetration depth. After recording the parameters, protection is restored, and production resumes. This achieves rapid and highly accurate welding head repositioning. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the welding equipment for the inverted water-cutting support (the pressure plate is turned up).

[0026] Figure 2 This is a schematic diagram of the welding equipment for an inverted water-cutting support.

[0027] Figure 3 This is a schematic diagram of the welding equipment for the inverted water cutting support (the electrical box rotates to expose the maintenance port).

[0028] Figure 4 This is a schematic diagram of the welding equipment for an inverted water-cutting support (pressure plate pressing down).

[0029] Figure 5 This is another angled schematic diagram of the welding equipment for the inverted water-cutting support (pressure plate pressing down).

[0030] Figure 6 This is a schematic diagram of a welding device for an inverted water-cutting support (clamping the workpiece).

[0031] Figure 7 This is another schematic diagram of the welding equipment for the inverted water-cutting support (clamping the workpiece, excluding part of the frame).

[0032] Figure 8 This is a schematic diagram of an ultrasonic welding device welding a workpiece.

[0033] Figure 9 for Figure 8 Enlarged view of part A.

[0034] Figure 10 This is a schematic diagram of the workpiece.

[0035] Figure 11 This is a schematic diagram of the workpiece from another angle.

[0036] Figure 12 This is an assembly drawing of a car door panel and a water-cutting bracket.

[0037] Figure 13 Assembly drawings for car door panels, water-cutting brackets, and trim panels. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments: Implementation examples, in conjunction with Figures 1 to 13 As shown, an inverted water-cutting support welding device includes a frame 1, an electrical box 2, an ultrasonic welding device 3, a clamping device 4, and a controller 5. The area near the top of the front side of the frame 1 is the welding area 11. The ultrasonic welding device 3 is installed in the inner cavity of the frame 1, and the welding torch 31 of the ultrasonic welding device 3 faces the welding area 11. The front side of the frame 1 is provided with a support block 6 for supporting the workpiece 300 around the welding area 11; The frame 1 has an inspection port 12 on the back. The electrical box 2 is pivotally connected to the back of the frame 1 by a hinge and can be rotated to open or close the inspection port 12. The clamping device 4 includes a plate 7 that can rotate around the top of the frame 1, a spring balancer 41 connected to the plate 7, and a cylinder 42 set on the top of the frame 1. The plate 7 is provided with a clamp 71 that matches the shape of the car door panel 301. The side wall of the plate 7 is provided with a locking block 73 with a locking hole 72. The piston rod 421 of the cylinder 42 can be inserted into or withdrawn from the locking hole 72 to lock or unlock the plate 7. The ultrasonic welding device 3, the electrical box 2, and the cylinder 42 are electrically connected to the controller 5. The electrical box 2 is used to supply power to the ultrasonic welding device 3, the cylinder 42, and the controller 5. The controller 5 is used to control the start and stop of the ultrasonic welding device 3 and the cylinder 42.

[0039] Furthermore, it also includes a first sensor 100 for detecting the placement of the workpiece 300. The first sensor 100 is mounted on the frame 1 and electrically connected to the controller 5, with its sensing end facing the front of the frame 1.

[0040] Furthermore, it also includes a second sensor 200 for detecting the rotation of the plate 7 into position. The second sensor 200 is disposed on the top of the frame 1 and electrically connected to the controller 5, with its sensing end facing the top of the frame 1.

[0041] Furthermore, both the first sensor 100 and the second sensor 200 are displacement sensors.

[0042] Furthermore, one side of the electrical box 2 is connected to the frame 1 via a hinge, and the other side is provided with a locking groove 21. The frame 1 is provided with a locking piece 13. When the electrical box 2 rotates and approaches the back of the frame 1, the locking piece 13 slides into the locking groove 21 to lock the electrical box 2 and the frame 1.

[0043] Furthermore, it also includes a support rod 8, a hook 74 is provided at the center of the plate 7, the spring balancer 41 is installed on the support rod 8 and connected to the hook 74 through the spring rope 411 of the spring balancer 41, and the controller 5 is provided on the support rod 8.

[0044] Furthermore, it also includes adjusting bolts. A connecting plate 9 extends downward from the top of the inner cavity of the frame 1. Multiple connecting holes 91 are spaced apart along the length direction on the connecting plate 9. The adjusting bolts pass through the corresponding connecting holes 91 to lock the ultrasonic welding device 3, thereby realizing the position adjustment of the ultrasonic welding device 3.

[0045] Furthermore, casters 10 are provided on the bottom side of the electrical box 2 away from the hinge.

[0046] Workpiece 300 is an assembly pre-assembled from automobile door panel 301, water-cutting bracket 302, and decorative part 303. The automotive door panel 301 is an injection molded part, with reinforcing ribs, positioning holes / pillars and edge stops on the inner side, serving as assembly and welding references; The water-cutting bracket 302 is arranged along the inner surface of the car door panel 301, and it forms an angle of about 70° with the car door panel 301 and other accessories. The end and rib of the water-cutting bracket 302 are provided with welding surfaces / fitting surfaces that fit with the car door panel 301, and correspond one-to-one with the reserved welding points of the car door panel 301 in multiple places. The decorative element 303 covers the designated area and achieves temporary fit and appearance concealment with the car door panel 301 and bracket through guide grooves, buckles or positioning posts.

[0047] After assembly, the three components form a stable state ready for welding. The welding interface faces the welding area 11 on the front side of the equipment. Each positioning reference is in place but the connection has not yet been fused, which facilitates the completion of ultrasonic energy coupling and final fixation in one go.

[0048] Safe welding process for workpiece 300: The operator places the workpiece 300, pre-assembled from the car door panel 301, the water-cutting bracket 302, and the decorative part 303, on the front support block 6 of the frame 1 for positioning. After the first sensor 100 detects that it is in position, the operator overcomes the pull force of the spring balancer 41 and flips the top plate 7 down to the pressing position. The second sensor 200 confirms that the plate 7 has rotated into position. The piston rod 421 of the cylinder 42 inserts laterally into the lock hole 72 to achieve mechanical locking. Under the interlocking condition of "two in position and one lock", the controller 5 starts the ultrasonic welding device 3. The welding torch 31 couples acoustic energy to the welding area 11 to complete the melting and short-term pressure holding and forming. Then the rod of the cylinder 42 retracts to unlock. The plate 7 automatically returns to its position under the action of the spring balancer 41. The operator takes the part and enters the next cycle.

[0049] The workpiece 300 is positioned between the operator and the welding torch 31 to form a forward physical barrier. The clamp 71 clamps and laterally locks to prevent accidental contact and misalignment. The sensor interlock prevents "welding without locking". This improves operational safety and weld consistency from both structural and control perspectives.

[0050] Convenient adjustment method for ultrasonic welding device 3: After turning off the power and air supply, rotate and open the electrical box 2, which is hinged to the back of the frame 1. Using the casters 10 for support, a single person can easily open the back inspection port 12. Loosen the adjusting bolts on the connecting plate 9 at the top of the inner cavity of the frame 1. According to the multiple sets of connecting holes 91 and scales arranged along the length of the connecting plate 9, make fine adjustments to the welding device in the longitudinal, transverse and height directions according to the process requirements, so that the welding torch 31 is coaxial or coplanar with each welding point. Tighten the adjusting bolts again with the specified torque, perform jogging or test welding to check the alignment and penetration depth, record the parameters, restore the protection and put it into production. This achieves rapid and highly repeatable welding head repositioning.

[0051] Workpiece 300 effectively shields the welding area 11 and reduces equipment costs: This structure "hangs" the workpiece 300 on the front side and presses it with the flip-lock clamp 71, so that the car door panel 301 is naturally positioned between the operator and the welding area 11, providing real-time shielding for the welding head and the molten area. Combined with mechanical locking, it can significantly reduce the probability of accidentally entering the danger zone and the escape of flying objects, thereby reducing the reliance on large-area covers, long-stroke protective doors or multiple sets of light gratings, and thus reducing costs.

[0052] The inverted water-cutting support 302 welding equipment is small in size. The ultrasonic welding unit is housed in the frame 1, with the welding torch 31 directly facing the welding point above and in front, eliminating the need for long crossbeams, slides, or turntables. The workpiece 300 is placed from the front, and the top flip-lock clamp 71 presses it into place, completing positioning and clamping on the same side. This eliminates the need for a tall and large downward pressure frame, resulting in a shorter path for force and energy. Multiple welding heads can be placed side by side to weld multiple points at once, eliminating the need for a series of workstations and reducing the need for conveying and repositioning mechanisms. The workpiece 300 itself is positioned in front of the welding area 11, and with lateral mechanical locking, it can be protected with a small area, saving the need for a large cover and a long-stroke safety door. The electrical box 2 is hinged to the back, allowing for maintenance from the rear, eliminating the need for a large passageway at the front and shortening cable conduits. These design features combined result in a smaller footprint, a more compact shape, and fewer accessories for the entire machine.

Claims

1. A welding device for an inverted water-cutting support, comprising a frame (1), an electrical box (2), an ultrasonic welding device (3), a clamping device (4), and a controller (5), characterized in that: The area near the top of the front side of the frame (1) is the welding area (11). The ultrasonic welding device (3) is installed in the inner cavity of the frame (1), and the welding torch (31) of the ultrasonic welding device (3) faces the welding area (11). The front side of the frame (1) is provided with a support block (6) for supporting the workpiece (300) located around the welding area (11). The frame (1) has an access port (12) on the back. The electrical box (2) is hinged to the back of the frame (1) and can be rotated to open or close the access port (12). The clamping device (4) includes a plate (7) that can rotate around the top of the frame (1), a spring balancer (41) connected to the plate (7), and a cylinder (42) set on the top of the frame (1). The plate (7) is provided with a clamp (71) that matches the shape of the car door panel (301). The side wall of the plate (7) is provided with a locking block (73) with a locking hole (72). The piston rod (421) of the cylinder (42) can be inserted into or withdrawn from the locking hole (72) to lock or unlock the plate (7). The ultrasonic welding device (3), the electrical box (2), and the cylinder (42) are electrically connected to the controller (5). The electrical box (2) is used to supply power to the ultrasonic welding device (3), the cylinder (42), and the controller (5). The controller (5) is used to control the start and stop of the ultrasonic welding device (3) and the cylinder (42).

2. The inverted water-cutting support welding equipment according to claim 1, characterized in that: It also includes a first sensor (100) for detecting the placement of the workpiece (300), the first sensor (100) being mounted on the frame (1) and electrically connected to the controller (5), with its sensing end facing the front of the frame (1).

3. The inverted water-cutting support welding equipment according to claim 2, characterized in that: It also includes a second sensor (200) for detecting the rotation of the plate (7) into position. The second sensor (200) is located on the top of the frame (1) and electrically connected to the controller (5), with its sensing end facing the top of the frame (1).

4. The inverted water-cutting support welding equipment according to claim 3, characterized in that: Both the first sensor (100) and the second sensor (200) are displacement sensors.

5. The inverted water-cutting support welding equipment according to claim 1, characterized in that: The electrical box (2) is connected to the frame (1) on one side by a hinge, and a lock groove (21) is provided on the other side. The frame (1) is provided with a lock piece (13). When the electrical box (2) rotates and approaches the back of the frame (1), the lock piece (13) slides into the lock groove (21) to lock the electrical box (2) and the frame (1).

6. The inverted water-cutting support welding equipment according to claim 1, characterized in that: It also includes a support rod (8), a hook (74) is provided at the center of the plate (7), the spring balancer (41) is installed on the support rod (8) and connected to the hook (74) through the spring rope (411) of the spring balancer (41), and the controller (5) is provided on the support rod (8).

7. The inverted water-cutting support welding equipment according to claim 1, characterized in that: It also includes adjusting bolts. A connecting plate (9) extends downward from the top of the inner cavity of the frame (1). Multiple connecting holes (91) are spaced apart along the length direction on the connecting plate (9). The adjusting bolts pass through the corresponding connecting holes (91) to lock the ultrasonic welding device (3), thereby realizing the position adjustment of the ultrasonic welding device (3).

8. The inverted water-cutting support welding equipment according to claim 5, characterized in that: Casters (10) are provided on the bottom side of the electrical box (2) away from the hinge.

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