Fuel tank bracket welding equipment

Abstract

This invention relates to the field of welding equipment technology and discloses a fuel tank bracket welding device. The device includes: a workbench, comprising a support platform for placing the fuel tank; a spot welding machine, including a lower electrode, an upper electrode, and a lifting mechanism; the lower electrode is fixedly mounted, and the lifting mechanism is connected to the upper electrode, which has a moving state (up and down movement) and a fixed state (stopped movement); a positioning mechanism, fixedly connected to the lower electrode, for positioning the fuel tank; and a bracket fixture, fixedly connected to the upper electrode, for fixing the bracket to be welded. The fuel tank bracket welding device provided by this invention ensures the positional consistency of the fuel tank and the bracket through the positioning mechanism and the bracket fixture, which helps reduce human error. Furthermore, the spot welding machine saves manpower and ensures stable welding quality and high welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and specifically to a welding equipment for fuel tank brackets. Background Technology

[0002] Fuel tank shells typically house valves and pipelines. To secure these components, brackets need to be welded to the tank's flanges, providing a base for their installation. Currently, in the welding of brackets at the tank flange edges, the brackets cannot be pre-welded (as this would affect the welding of the seam welded assembly). Therefore, bracket welding usually requires two operators: one operator collects the seam-welded fuel tanks from the equipment, places them on a transport cart, and transports them to the bracket spot welding station; the other operator performs the bracket welding, then places the welded products back on the transport cart and transports them to the helium inspection station for the next process. However, this manual operation method makes it difficult to ensure consistency in the welding position, angle, and quality of the brackets, requiring significant manpower and resulting in low efficiency. Summary of the Invention

[0003] In view of this, the present invention provides a fuel tank bracket welding device to solve the problems that manual operation is difficult to guarantee the consistency of the welding position, angle and quality of the bracket, which requires a lot of manpower and has low work efficiency.

[0004] This invention provides a fuel tank bracket welding device, which is installed next to a fuel tank seam welding device. The fuel tank bracket welding device includes:

[0005] Workbench, including a support platform for placing the oil tank;

[0006] A spot welding machine includes a lower electrode, an upper electrode, and a lifting mechanism. The lower electrode is fixedly installed, and the lifting mechanism is connected to the upper electrode. The upper electrode has a moving state that moves up and down, and a fixed state that stops moving.

[0007] The positioning mechanism is fixedly connected to the lower electrode and is used to position the oil tank.

[0008] The bracket fixture is fixedly connected to the upper electrode and is used to fix the bracket to be welded.

[0009] In one optional embodiment, the bracket fixture includes a fixing block, a bracket slot is provided on the fixing block, and a threaded hole communicating with the bracket slot is provided on the fixing block. A ball screw is threaded into the threaded hole, and the ball of the ball screw is adapted to extend into the bracket slot.

[0010] In one alternative embodiment, the fixing block is provided with two ball screws, which are spaced apart and located on the same side of the bracket slot.

[0011] In one alternative embodiment, a first groove is provided on the fixing block, the first groove being disposed between two ball screws and communicating with the bracket slot.

[0012] In one alternative embodiment, the fixing block is further provided with an opening groove, which is located on the other side of the bracket slot opposite to the first groove, and the opening groove is connected to the bracket slot.

[0013] In one alternative embodiment, a second groove is provided on the fixing block. The second groove is located above the bracket slot and communicates with the bracket slot, the opening slot and the first groove.

[0014] In one alternative embodiment, a sensor is provided on the fixing block, and the sensor probe is located at the second groove. The sensor is used to detect whether there is a bracket at the bracket slot.

[0015] In one optional embodiment, the bracket fixture further includes a connecting seat sleeved on the upper electrode, an insulating sleeve being provided between the connecting seat and the upper electrode, and the connecting seat being fixedly connected to the fixing block.

[0016] In one alternative embodiment, the positioning mechanism includes a positioning pin and a positioning plate. The positioning pin is fixedly connected to the support platform and is adapted to be inserted into a reference hole of the oil tank. The positioning plate is fixedly connected to the support platform, and the oil tank is adapted to rotate about the axis of the positioning pin and abut against the positioning plate.

[0017] In one alternative embodiment, the workbench further includes a lifting support frame disposed below the support platform for adjusting the height of the support platform.

[0018] The technical solution of this invention has the following advantages:

[0019] 1. The fuel tank bracket welding equipment provided by the present invention ensures the positional consistency of the fuel tank and the bracket through the positioning mechanism and bracket tooling, which helps to reduce human error. The bracket is welded by a spot welding machine, which helps to save manpower and ensures the stability of welding quality and welding efficiency.

[0020] 2. The fuel tank bracket welding equipment provided by the present invention can realize the quick clamping and positioning of the bracket by setting bracket slots and ball screws, and the clamping force can be adjusted by rotating the ball screws, which is convenient to adapt to brackets of different thicknesses.

[0021] 3. The fuel tank bracket welding equipment provided by the present invention reduces the overall weight of the fixing block by setting a first groove, and provides clearance space for the local protrusions of the bracket.

[0022] 4. The fuel tank bracket welding equipment provided by the present invention can further reduce the weight of the fixing block by setting an opening slot, and avoid the reinforcing ribs on the bracket.

[0023] 5. The fuel tank bracket welding equipment provided by the present invention uses rotary positioning to facilitate convenient and rapid positioning.

[0024] 6. The oil tank bracket welding equipment provided by the present invention adjusts the height of the lifting platform by setting a lifting support frame, so as to adapt to oil tanks of different heights. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a fuel tank bracket welding device according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 The diagram shows the structural arrangement of the fuel tank bracket welding equipment with the fuel tank and bracket.

[0028] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0029] Figure 4 for Figure 1 The diagram shows the structural design of the support fixture.

[0030] Figure 5 for Figure 4 The diagram shows the structure of the bracket fixture and the upper electrode in conjunction.

[0031] Figure 6 for Figure 5 The diagram shows the structural arrangement of the bracket tooling and the bracket.

[0032] Figure 7 for Figure 6 The diagram shows the structure of the support frame.

[0033] Figure 8 for Figure 1 The diagram shows the structure of the fuel tank bracket welding equipment. Figure 2 ;

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Workbench; 11. Support platform; 12. Lifting support frame; 121. Horizontal bar; 122. Adjustable foot; 2. Positioning mechanism; 21. Positioning pin; 22. Positioning plate; 23. Fixing plate; 3. Oil tank; 31. Oil tank flange face; 4. Lower electrode; 5. Upper electrode; 6. Lifting mechanism; 7. Bracket fixture; 71. Fixing block; 72. Bracket slot; 73. Ball screw; 74. Connecting seat; 75. Insulating sleeve; 76. First groove; 77. Second groove; 78. Opening slot; 79. Sensor; 8. Base; 91. L-shaped connecting plate; 92. Reinforcing plate; 10. Support seat; 13. Spot welding machine; 14. Bracket; 141. Reinforcing rib. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The following is combined with Figures 1 to 8 The following describes embodiments of the present invention.

[0038] According to an embodiment of the present invention, a fuel tank bracket welding device is provided, disposed next to a fuel tank seam welding device, the fuel tank bracket welding device comprising:

[0039] Workbench 1 includes a support platform 11 for placing oil tank 3;

[0040] The spot welding machine 13 includes a lower electrode 4, an upper electrode 5 and a lifting mechanism 6. The lower electrode 4 is fixedly installed, the lifting mechanism 6 is connected to the upper electrode 5, and the upper motor has a moving state of moving up and down and a fixed state of stopping moving.

[0041] Positioning mechanism 2 is fixedly connected to lower electrode 4 and is used to position oil tank 3;

[0042] The bracket fixture 7 is fixedly connected to the upper electrode 5 and is used to fix the bracket 14 to be welded.

[0043] The fuel tank bracket welding equipment provided in this embodiment ensures the positional consistency of the fuel tank 3 and the bracket 14 through the positioning mechanism 2 and the bracket tooling 7, which helps to reduce human error. The bracket 14 is welded by the spot welding machine 13, which helps to save manpower and ensures the stability of welding quality and welding efficiency.

[0044] Specifically, the fuel tank bracket welding equipment is arranged next to the fuel tank seam welding equipment, which facilitates the connection of the fuel tank seam welding and bracket spot welding production line, forming a continuous operation station. It eliminates the need for transfer and two-person operation, which helps to save manpower and improve efficiency.

[0045] The workbench 1 supports the oil tank 3, allowing the welded oil tank to be placed on its support platform 11. The positioning mechanism 2 positions the oil tank to ensure consistent welding positions. The lower electrode 4 is fixedly positioned below the flange edge of the oil tank 3, corresponding to the welding position of the bracket 14. The lower electrode 4 is fixedly connected to the spot welding machine 13 body via a support base 10. The positioning mechanism 2 is fixedly connected to the support base 10, which supports both the lower electrode 4 and the positioning mechanism 2. Figure 8 As shown, the support base 10 is a frame structure formed by fixing and connecting multiple flat plates.

[0046] The lifting mechanism 6 is a conventional pneumatic cylinder, hydraulic cylinder, or electric cylinder, whose output end is fixedly connected to the upper electrode 5. It is used to drive the upper electrode 5 to perform linear reciprocating motion in the vertical direction, and to enable the upper electrode 5 to move up and down and to be stationary. Alternatively, the lifting mechanism 6 can also use a cam linkage or gear rack and pinion transmission mechanism to drive the upper electrode 5 to move up and down.

[0047] The bracket fixture 7 moves up and down synchronously with the upper electrode 5. The bracket fixture 7 is used to pre-clamp the bracket 14 to be welded. When the upper electrode 5 moves down to the welding position, the bracket fixture 7 drives the bracket 14 to abut against the oil tank flange surface 31. The bracket 14 is clamped and positioned by the bracket fixture 7, and its displacement is changed by the lifting mechanism 6. This reduces position and angle deviations caused by human factors, so that the positions of the oil tank 3 and the bracket 14 are both positioned by mechanical structure, ensuring the consistency of the welding position of the bracket 14 on the oil tank 3. Welding is then performed by the spot welding machine 13, which helps to ensure the stability of the welding quality of the oil tank 3 and the bracket 14. Compared with manual welding, it can effectively avoid the situation where the accuracy, welding quality and efficiency will decrease due to fatigue after a certain period of work.

[0048] In one embodiment, combined Figures 4 to 6 As shown, the bracket fixture 7 includes a fixing block 71, a bracket slot 72 is provided on the fixing block 71, and a threaded hole communicating with the bracket slot 72 is provided on the fixing block 71. A ball screw 73 is threadedly connected in the threaded hole, and the ball of the ball screw 73 is adapted to extend into the bracket slot 72.

[0049] The fuel tank bracket welding equipment provided in this embodiment can quickly clamp and position the bracket 14 by setting the bracket slot 72 and the ball screw 73, and the clamping force can be adjusted by rotating the ball screw 73, which is convenient to adapt to brackets 14 of different thicknesses.

[0050] Specifically, the lower end of the bracket slot 72 is open, allowing the operator to insert the bracket 14 into the bracket slot 72 from bottom to top. The bracket 14 is an L-shaped plate, with one side plate embedded in the bracket slot 72 and the other side plate abutting against the opening of the bracket slot 72, and is adapted to move with the fixing block 71 to abut against the oil tank flange surface 31. The body of the ball screw 73 and the upper electrode 5 are respectively located on opposite sides of the bracket slot 72.

[0051] Under the action of an internal spring, the glass ball of the ball screw 73 extends into the bracket slot 72 through the threaded hole, and can form an elastic clamping force on the bracket 14 located in the bracket slot 72. This allows the bracket 14 to be fixed to the fixing block 71 by the friction between itself, the glass ball, and the inner wall of the bracket slot 72, achieving quick clamping and anti-detachment positioning of the bracket 14. After the bracket 14 is welded and fixed to the fuel tank flange face 31, the fixing block 71 rises, and the bracket 14 moves against the friction between itself, the glass ball, and the inner wall of the bracket slot 72 to disengage from the bracket slot 72.

[0052] The tightening force of the ball screw 73 on the bracket 14 can be adjusted by rotating the ball screw 73, so as to adapt to brackets 14 of different thicknesses and improve applicability.

[0053] In one embodiment, combined Figures 4 to 6 As shown, the fixing block 71 is provided with two ball screws 73, which are spaced apart and located on the same side of the bracket slot 72.

[0054] Specifically, two ball screws 73 are set on the same side of the bracket slot 72 and spaced apart in the horizontal direction to achieve multi-point clamping, so that the bracket 14 is subjected to uniform force and to improve clamping stability, avoiding possible deflection or lifting due to single-point clamping.

[0055] In one embodiment, combined Figures 4 to 6 As shown, a first groove 76 is provided on the fixing block 71. The first groove 76 is located between two ball screws 73 and communicates with the bracket slot 72.

[0056] The fuel tank bracket welding equipment provided in this embodiment reduces the overall weight of the fixing block 71 by setting the first groove 76, and provides clearance space for the local protrusion of the bracket 14.

[0057] Specifically, the first groove 76 is formed on the side of the bracket slot 72 away from the upper electrode 5. On the one hand, by setting the first groove 76, the overall weight of the fixing block 71 can be reduced; on the other hand, some brackets 14 may have local protrusions. By setting the first groove 76, the local protrusions can be avoided, preventing interference with the bracket 14 and improving the adaptability of the bracket tooling.

[0058] In one embodiment, combined Figures 4 to 6 As shown, the fixing block 71 is also provided with an opening groove 78, which is located on the other side of the bracket slot 72 relative to the first groove 76, and the opening groove 78 is connected to the bracket slot 72.

[0059] The fuel tank bracket welding equipment provided in this embodiment can further reduce the weight of the fixing block 71 by setting the opening slot 78, and avoid the reinforcing rib 141 on the bracket 14.

[0060] Specifically, the opening groove 78 is located on the side of the bracket slot 72 opposite to the ball screw 73. Some brackets 14 have protruding structures at the bends that serve as reinforcing ribs 141, and the opening groove 78 can avoid these reinforcing ribs 141. Furthermore, the opening groove 78 can further reduce the overall weight of the fixing block 71. Both the opening groove 78 and the first groove 76 can avoid the protrusions on the bracket 14, which helps improve the adaptability of the fixing block 71 to the bracket 14 during clamping.

[0061] In one embodiment, combined Figures 4 to 6 As shown, a second groove 77 is provided on the fixing block 71. The second groove 77 is located above the bracket slot 72 and communicates with the bracket slot 72, the opening slot 78 and the first groove 76.

[0062] Specifically, by creating a second groove 77, the fixing block 71 is made to be L-shaped, so as to avoid the upper electrode 5 and further reduce the overall weight of the fixing block 71.

[0063] In one embodiment, combined Figures 4 to 6 As shown, a sensor 79 is provided on the fixing block 71. The probe of the sensor 79 is located at the second groove 77. The sensor 79 is used to detect whether there is a bracket 14 at the bracket slot 72.

[0064] Specifically, during the installation of the bracket 14, the bracket 14 extends into the bracket slot 72 from its lower opening, and a portion of the bracket 14 extends out from the upper opening of the bracket slot 72 to fit into the second groove 77. The structure of the bracket 14 extending into the second groove 77 is located within the sensing area of ​​the sensor 79 in the second groove 77. The sensor 79 is connected to the control system of the spot welding machine 13 via a wired or wireless communication connection. The sensor 79 may include a laser sensor, a photoelectric sensor, or a proximity sensor, etc.

[0065] When sensor 79 detects that bracket 14 is in place, it sends a signal to the control system of spot welding machine 13 to allow welding. If bracket 14 is not detected, it sends a signal to the control system to prohibit welding. This is to prevent empty welding without bracket, accidental welding, and ensure operational safety, improve the automation level of the equipment, reduce manual inspection, and save manpower.

[0066] The spot welding machine 13 is equipped with two buttons. The welding operation will only start when both buttons are pressed simultaneously by both hands and when the control system of the spot welding machine 13 receives a signal from the sensor 79 indicating that the support 14 is in place. After welding is completed, the oil tank 3 is manually removed and placed on the conveyor to flow into the next process.

[0067] The spot welding machine 13 is equipped with an indicator light that is electrically connected to the sensor 79. When the sensor 79 detects that the bracket 14 is in place, the indicator light is lit; when the bracket 14 is not detected, the indicator light is off, so that the operator can intuitively judge whether the bracket 14 is in place.

[0068] In one embodiment, combined Figures 4 to 6 As shown, the bracket fixture 7 also includes a connecting seat 74 sleeved on the upper electrode 5, an insulating sleeve 75 is provided between the connecting seat 74 and the upper electrode 5, and the connecting seat 74 is fixedly connected to the fixing block 71.

[0069] Specifically, the connecting seat 74 can adopt a clamp-type structure or a split structure, fixed to the upper electrode 5 by clips or bolts. By setting an insulating sleeve 75, conductivity between the upper electrode 5 and the fixing block 71 is prevented, improving the electrical safety of the equipment, preventing welding current shunting, ensuring stable welding current, and achieving the required welding strength. The insulating sleeve 75 can be made of insulating materials such as rubber, plastic, insulating fiber materials, or ceramics.

[0070] In one embodiment, combined Figures 1 to 3 As shown, the positioning mechanism 2 includes a positioning pin 21 and a positioning plate 22. The positioning pin 21 is fixedly connected to the support platform 11 and is adapted to be inserted into the reference hole of the oil tank 3. The positioning plate 22 is fixedly connected to the support platform 11. The oil tank 3 is adapted to rotate around the axis of the positioning pin 21 and abut against the positioning plate 22.

[0071] The fuel tank bracket welding equipment provided in this embodiment uses rotary positioning to facilitate convenient and rapid positioning.

[0072] Specifically, a fixed plate 23 is fixedly connected to the support base 10. The fixed plate 23 is a rectangular plate, and the positioning pin 21 and the positioning plate 22 are fixedly connected to both ends of the fixed plate 23, respectively. The positioning pin 21 forms an insertion positioning with the reference hole on the oil tank 3. The oil tank 3 is rotated on the support platform 11 around the axis of the positioning pin 21 until the oil tank 3 is in contact with the positioning plate 22, thereby completing the positioning of the oil tank 3 and ensuring the consistency of the welding position and angle between the oil tank 3 and the bracket 14.

[0073] In one embodiment, combined Figures 1 to 3 As shown, the workbench 1 includes a lifting support frame 12, which is located below the support platform 11 and is used to adjust the height of the support platform 11.

[0074] The oil tank bracket welding equipment provided in this embodiment adjusts the height of the support platform 11 by setting a lifting support frame 12, so as to adapt to oil tanks 3 of different heights.

[0075] Specifically, the bottom of the spot welding machine 13 is fixedly connected to a base 8, and the bottom of the lifting support frame 12 is detachably fixedly connected to the base 8 via an L-shaped connecting plate 91. One side plate of the L-shaped connecting plate 91 is fixedly connected to the base 8, and the other side plate is detachably fixedly connected to the lifting support frame 12. A reinforcing plate 92 is fixedly connected to the L-shaped connecting plate 91, and the reinforcing plate 92 is perpendicularly abutted against the two side plates of the L-shaped connecting plate 91 to enhance the strength of the L-shaped connecting plate 91. The lifting support frame 12 includes a support frame body and a transverse rod 121 disposed on the upper part of the support frame body. One end of the transverse rod 121 is fixedly connected to the support frame body, and the other end is abutted against or detachably fixedly connected to the body of the spot welding machine 13, thereby improving the overall stability of the workbench 1 and the spot welding machine 13.

[0076] As one feasible implementation, the support frame body includes a frame-type main body and multiple adjustable feet 122 disposed at the bottom of the main body, so that height adjustment can be achieved by rotating the threads of the adjustable feet 122. As an additional implementation, the support frame body adopts a conventional scissor lift mechanism, which changes the state of the four-bar linkage quadrilateral through a hydraulic cylinder, thereby achieving vertical height adjustment.

[0077] Furthermore, the upper end of the positioning pin 21 is tapered, and the reference hole of the oil tank 3 is matched with the tapered area of ​​the positioning pin 21. The lifting support frame 12 is used to adjust the lifting of the oil tank 3 so that the reference hole of the oil tank 3 of different sizes can be matched with the positioning pin 21.

[0078] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A fuel tank bracket welding device, characterized in that, Located next to the fuel tank seam welding equipment, the fuel tank bracket welding equipment includes: The workbench (1) includes a support platform (11) for placing the oil tank (3). The spot welding machine (13) includes a lower electrode (4), an upper electrode (5) and a lifting mechanism (6). The lower electrode (4) is fixedly installed, and the lifting mechanism (6) is connected to the upper electrode (5). The upper electrode (5) has a moving state that moves up and down and a fixed state that stops moving. The positioning mechanism (2) is fixedly connected to the lower electrode (4) and is used to position the oil tank (3). The bracket fixture (7) is fixedly connected to the upper electrode (5), and the bracket fixture (7) is used to fix the bracket (14) to be welded.

2. The fuel tank bracket welding equipment according to claim 1, characterized in that, The bracket fixture (7) includes a fixing block (71), a bracket slot (72) is provided on the fixing block (71), and a threaded hole communicating with the bracket slot (72) is provided on the fixing block (71). A ball screw (73) is threadedly connected in the threaded hole, and the ball of the ball screw (73) is adapted to extend into the bracket slot (72).

3. The fuel tank bracket welding equipment according to claim 2, characterized in that, The fixing block (71) is provided with two ball screws (73), which are spaced apart and located on the same side of the bracket slot (72).

4. The fuel tank bracket welding equipment according to claim 3, characterized in that, The fixing block (71) is provided with a first groove (76), which is located between the two ball screws (73) and communicates with the bracket slot (72).

5. The fuel tank bracket welding equipment according to claim 4, characterized in that, The fixing block (71) is also provided with an opening groove (78), which is located on the other side of the bracket slot (72) relative to the first groove (76), and the opening groove (78) is connected to the bracket slot (72).

6. The fuel tank bracket welding equipment according to claim 5, characterized in that, The fixing block (71) has a second groove (77) located above the bracket slot (72) and communicating with the bracket slot (72), the opening slot (78) and the first groove (76).

7. The fuel tank bracket welding equipment according to claim 6, characterized in that, A sensor (79) is provided on the fixing block (71). The probe of the sensor (79) is located at the second groove (77). The sensor (79) is used to detect whether the bracket (14) is in the bracket slot (72).

8. The fuel tank bracket welding equipment according to claim 2, characterized in that, The bracket fixture (7) also includes a connecting seat (74) sleeved on the upper electrode (5), an insulating sleeve (75) is provided between the connecting seat (74) and the upper electrode (5), and the connecting seat (74) is fixedly connected to the fixing block (71).

9. The fuel tank bracket welding equipment according to claim 1, characterized in that, The positioning mechanism (2) includes a positioning pin (21) and a positioning plate (22). The positioning pin (21) is fixedly connected to the support platform (11) and is adapted to be inserted into the reference hole of the oil tank (3). The positioning plate (22) is fixedly connected to the support platform (11). The oil tank (3) is adapted to rotate around the axis of the positioning pin (21) and abut against the positioning plate (22).

10. The fuel tank bracket welding equipment according to claim 1, characterized in that, The workbench (1) also includes a lifting support frame (12), which is located below the support platform (11) and is used to adjust the height of the support platform (11).

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