Oil tank end cover welding device

Abstract

The utility model relates to an oil tank end cover welding device, which belongs to the technical field of machining, and comprises a working rack, and a bearing piece for supporting an oil tank barrel body is arranged on the working rack; a clamping device is arranged above the bearing piece, the clamping device comprises two end cover supporting pieces which are arranged on the working rack in a relatively rotating mode, and one end cover supporting piece is connected with a clamping air cylinder installed on the working rack; the end cover supporting piece far away from the clamping air cylinder is driven by a driving device arranged on the working rack to rotate. A welding device is arranged above the clamping device and comprises a welding fixing piece, and a welding gun capable of sliding between the two end cover supporting pieces in the axial direction of the welding fixing piece in a reciprocating mode is arranged in the welding fixing piece. The clamping air cylinder drives one end cover supporting piece to move towards the other end cover supporting piece, the two oil tank end covers are installed at the two end openings of the oil tank barrel in advance, the welding fixing piece limits the moving track of the welding gun, the consistency and safety of machining of the welding position are guaranteed, and meanwhile the welding period is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and specifically relates to a welding device for a fuel tank end cover. Background Art

[0002] A heavy truck fuel tank is an oil storage device assembled on a truck for transporting heavy goods. Its main purpose is to provide fuel storage and transportation functions for heavy trucks to ensure that the trucks can operate for a long time. The fuel tank can maintain a stable supply of fuel. During the vehicle operation, the fuel enters through the inlet at the bottom of the fuel tank and is then sucked into the engine by the fuel pump for combustion. The fuel tank is usually equipped with devices such as fuel pipes, filters, and pumps inside to ensure the normal supply of fuel and prevent impurities from entering the fuel system. At the same time, the fuel tank also has devices such as drain holes and ventilation holes to prevent moisture and gas from accumulating inside the fuel tank, which may affect the quality and supply of fuel.

[0003] In addition, the fuel tank also plays a role in protecting the fuel. In case of a collision or accident of the vehicle, the fuel tank can play a certain protective role to prevent fuel leakage or fire. The fuel tank also has the function of preventing fuel evaporation. There is usually a sealing cover inside to prevent fuel evaporation and external air from entering the fuel tank, which can not only reduce fuel loss but also keep the vehicle environment clean and safe.

[0004] Among them, the heavy truck fuel tank with a smaller cross-section is of a cylindrical structure. The heavy truck fuel tank is divided into a cylindrical fuel tank barrel body and fuel tank end covers that are blocked at both ends of the fuel tank barrel body and have a U-shaped cross-section. For easy processing, the fuel tank barrel body and the fuel tank end covers are produced and manufactured separately and are integrally welded and formed later.

[0005] In the welding and assembly of heavy truck fuel tanks, the welding of fuel tank end covers is a very crucial process. At present, there is no special welding device for fuel tank production, and manual welding is often used. This method has obvious defects: manual welding is slow and unstable, which is difficult to meet the requirements of high-efficiency production, resulting in a long production cycle of fuel tanks and affecting the overall fuel tank efficiency. The welding quality is related to the sealing and safety of the fuel tank, and manual welding is easily affected by the skill level and experience of operators. The weld seam consistency is poor, and problems such as uneven welding and weld defects are likely to occur, reducing the quality and reliability of the fuel tank. Summary of the Utility Model

[0006] To solve the problems of long welding cycle, poor weld seam consistency, and poor safety existing in manual welding, the utility model provides a welding device for a fuel tank end cover.

[0007] The utility model is realized through the following technical solutions:

[0008] A welding device for a fuel tank end cover includes a workbench frame, and a supporting member for supporting the fuel tank barrel body is arranged on the workbench frame;

[0009] A clamping device is provided above the support member, and the clamping device includes two end cover support members which are relatively rotatably arranged on the workbench, wherein one end cover support member is connected to a clamping cylinder installed on the workbench, and the clamping cylinder drives the end cover support member to move toward the other end cover support member;

[0010] The end cover support away from the clamping cylinder is driven to rotate by a driving device arranged on the working table;

[0011] A welding device is arranged above the clamping device. The welding device comprises a welding fixture installed on a workbench. A welding gun which can slide back and forth along its axial direction between two end cover support members is arranged in the welding fixture.

[0012] The supporting parts can support the side walls of the oil tank barrel body, and the two oil tank end covers are respectively hung on the end cover supporting parts. The clamping cylinder drives one end cover supporting part to move toward the other end cover supporting part, thereby completing the pre-installation of the two oil tank end covers at the two ends of the oil tank barrel body. The moving trajectory of the welding gun is limited by the welding fixing parts, thereby ensuring the consistency and safety of the welding processing and shortening the welding cycle.

[0013] A further improvement of the utility model is that the above-mentioned supporting members are provided with at least two groups, and at least two groups of supporting members are sequentially arranged between the two end cover supporting members, which helps to increase the contact area with the side wall of the oil tank barrel body.

[0014] A further improvement of the utility model is that each group of supporting members includes two rollers disposed on both sides of the center line of the two end cover supporting members. At least four rollers form multi-point support for the oil tank barrel body, and the rollers help to assist the rotation of the oil tank barrel body.

[0015] A further improvement of the utility model is that the welding machine is connected with a smoke collecting device, which can absorb the smoke generated during the welding process when the welding gun moves, thereby purifying the working environment.

[0016] A further improvement of the utility model is that a smoke collecting bracket which can be detachably connected to the smoke collecting device is provided on the workbench on one side of the welding fixture. The smoke collecting bracket can support the smoke collecting device when it is stationary and share the force of the welding gun.

[0017] A further improvement of the utility model is that the workbench is provided with a cable fixing member capable of restraining the cable of the welding gun and the smoke collecting device. The cable fixing member helps to fix the middle section of the cable connecting the welding gun and the smoke collecting device, thereby avoiding the risk of the cable contacting the workpiece when the welding gun drives the smoke collecting device to move.

[0018] A further improvement of the utility model is that the driving device includes a driving motor, which is installed on a workbench; the output end of the driving motor is linked to an end cover support far away from the clamping cylinder through a transmission assembly. After the clamping device clamps and fixes the entire oil tank, the driving motor is linked to one of the end cover supports through the transmission assembly, so that the entire oil tank rotates with the two end cover supports, so as to facilitate the cooperation with the welding gun to complete the welding of the oil tank end cover and the oil tank barrel.

[0019] A further improvement of the utility model is that the transmission assembly includes a driving sprocket disposed on the output end of the driving motor, the driving sprocket is connected to a sprocket a rotatably disposed on the workbench through a transmission chain 1; a sprocket b is coaxially disposed on the sprocket a, and the sprocket b is connected to a sprocket 2 that drives the end cover support to rotate through a transmission chain 2. The force strength of the transmission chain 1 and the transmission chain 2 during the transmission process is reduced.

[0020] A further improvement of the utility model is that the diameter of the sprocket wheel b is smaller than the diameter of the sprocket wheel a, which helps to achieve the purpose of increasing the torque at a low speed.

[0021] A further improvement of the utility model is that a control cabinet for controlling the start and stop of the clamping cylinder, the driving device and the welding gun is also provided on one side of the workbench.

[0022] It can be seen from the above technical scheme that the beneficial effects of the utility model are: 1. The supporting member can support the side wall of the oil tank barrel, and the two oil tank end covers are respectively hung on the end cover supporting members. The clamping cylinder drives one end cover supporting member to move to the other end cover supporting member, thereby completing the pre-installation of the two oil tank end covers at the two ports of the oil tank barrel respectively. The moving trajectory of the welding gun is limited by the welding fixing parts, thereby ensuring the consistency and safety of the welding processing, and shortening the welding cycle; 2. The driving device drives one of the end cover supporting members to rotate, thereby realizing the rotation of the entire oil tank, which, with the cooperation of the welding gun, helps to improve the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a specific implementation method of the utility model.

[0025] Figure 2 It is a schematic cross-sectional structure diagram of a specific implementation method of the utility model.

[0026] Figure 3 It is a schematic diagram of a transmission assembly according to a specific implementation mode of the utility model.

[0027] In the accompanying drawings: 10, workbench; 20, control cabinet; 30, safety protection device; 40, clamping device; 41, end cover support; 42, support plate; 43, mounting plate 1; 44, clamping cylinder; 50, supporting member; 51, roller; 60, welding device; 61, welding fixture; 62, welding gun; 70, smoke collecting device; 71, smoke collecting bracket; 80, driving device; 81, mounting plate 2; 82, transmission chain 1; 83, sprocket 1a; 831, sprocket 1b; 84, sprocket 2; 85, transmission chain 2; 86, driving motor; 861, driving sprocket; 90, cable fixture. DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0029] As attached Figure 1 and 3 As shown, a tank end cover welding device comprises a workbench 10, on which a supporting member 50 for supporting the tank barrel is provided; the supporting member 50 is provided with at least two groups, and at least two groups of supporting members 50 are sequentially arranged between two end cover supporting members 41. Each group of supporting members 50 comprises two rollers 51 arranged on both sides of the center line of the two end cover supporting members 41. It helps to increase the contact area with the side wall of the tank barrel; at least four rollers 51 form multi-point support for the tank barrel, and the rollers 51 help to assist the rotation of the tank barrel.

[0030] As attached Figure 1 and 3 As shown, a clamping device 40 is provided above the supporting member 50, and the clamping device 40 includes two end cover supporting members 41 relatively rotatably arranged on the workbench 10, wherein one end cover supporting member 41 is connected to a clamping cylinder 44 installed on the workbench 10, and the clamping cylinder 44 drives the end cover supporting member 41 to move toward the other end cover supporting member 41. The clamping cylinder 44 drives one end cover supporting member 41 to move toward the other end cover supporting member 41, completing the pre-installation of the two oil tank end covers at the two ports of the oil tank barrel body, respectively, and waiting for welding at the butt joint.

[0031] As attached Figure 1As shown, the end cover support 41 is integrally annular and can cooperate with the fuel tank end cover with a U-shaped cross-section for support; on the opposite sides of the two end cover supports 41, there are also support plates 42, and the support plates 42 are connected to the end cover supports 41 through connecting pieces. This helps to achieve the structure where the end cover support 41 protrudes outward, facilitating the installation of the fuel tank end cover thereon while reducing the self-weight of the clamping device 40. The ejecting end of the clamping cylinder 44 is connected to the center of the support plate 42 near the clamping cylinder 44; the clamping cylinder 44 is installed on the workbench frame 10 through the first mounting plate 43.

[0032] As shown in the Figure 1-3 attachment, the end cover support 41 far from the clamping cylinder 44 is driven to rotate by a driving device 80 arranged on the workbench frame 10; the driving device 80 includes a driving motor 86, and the driving motor 86 is installed on the workbench frame 10; the output end of the driving motor 86 is linked with the end cover support 41 far from the clamping cylinder 44 through a transmission assembly. The transmission assembly includes a driving sprocket 861 arranged on the output end of the driving motor 86, and the driving sprocket 861 is connected through a first transmission chain 82 to a first sprocket a83 rotatably arranged on the workbench frame 10; coaxially provided on the first sprocket a83 is a first sprocket b831, and the first sprocket b831 is connected through a second transmission chain 85 to a second sprocket 84 that drives the end cover support 41 to rotate. The diameter of the first sprocket b831 is smaller than that of the first sprocket a83. This reduces the stress intensity on the first transmission chain 82 and the second transmission chain 85 during the transmission process, helping to achieve the purpose of increasing torque while reducing rotational speed.

[0033] As shown in the Figure 2 attachment, the workbench frame 10 is also provided with a second mounting plate 81 and a third mounting plate. The second mounting plate 81 is sleeved on the output shaft of the driving motor 86, and the output shaft is connected to the second mounting plate 81 through a bearing, and the second mounting plate 81 forms a support for the output shaft of the driving motor 86; the third mounting plate is arranged between the second sprocket 84 and the support plate 42 far from the clamping cylinder 44, and the center of the second sprocket 84 is connected to the center of the support plate 42 through a support shaft, and the support shaft is rotatably arranged on the third mounting plate through a bearing.

[0034] As shown in the Figure 1As shown, a welding device 60 is provided above the clamping device 40, and the welding device 60 includes a welding fixture 61 installed on the workbench 10, and a welding gun 62 is provided in the welding fixture 61, which can slide back and forth between the two end cover support members 41 along its axial direction. The moving trajectory of the welding gun 62 is limited by the welding fixture 61, thereby ensuring the consistency and safety of the welding processing, and shortening the welding cycle. Due to the limited length of the welding gun 62, a support rod is slidably provided in the welding fixture 61 to support the welding gun 62. The position of the welding gun 62 can be adjusted by sliding the support rod and fixing the support rod through the welding fixture 61.

[0035] As attached Figure 1 and 2 As shown, the welding part is connected with a smoke collecting device 70. A smoke collecting bracket 71 which can be detachably connected to the smoke collecting device 70 is provided on the workbench 10 on one side of the welding fixture 61. The smoke collecting device 70 can absorb the smoke generated during the welding process when the welding gun 62 moves, thereby purifying the working environment; the smoke collecting bracket 71 can support the smoke collecting device 70 when it is stationary, and share the force of the smoke collecting device 70 connected to the welding gun 62.

[0036] As attached Figure 2 As shown, the workbench 10 is provided with a cable fixing member 90 capable of restraining the cables of the welding gun 62 and the fume collecting device 70 .

[0037] As attached Figure 1 As shown, a control cabinet 20 for controlling the start and stop of the clamping cylinder 44 , the driving device 80 and the welding gun 62 is also provided on one side of the workbench 10 .

[0038] The control cabinet 20 is equipped with power supply, indicator light, clamping, releasing, starting, stopping and other buttons, which are integrated on the column of the workbench 10 and are used to adjust and control the actions and working parameters of various components to ensure the normal operation of the tank end cover welding device.

[0039] A safety protection device 30 is provided on the workbench 10 on one side of the control cabinet 20. The safety protection device 30 includes an emergency stop button that can control the emergency stop of the equipment to ensure the safety of the operator.

[0040] 1. Emergency stop: when any emergency stop button on the operation box and the machine body is pressed, the equipment control circuit loses power and stops. When the equipment is restarted, all emergency stop buttons must be released; 2. Interlock protection: click the clamping button, and after the oil tank barrel and the oil tank end cover are clamped, click the start button again, the barrel will rotate and weld. If it is not in the clamping state, the tooling cannot rotate and weld; 3. If an abnormality occurs during the welding process, click the stop button to pause, and click start again to continue welding; 4. The tooling rotation speed can be controlled by the potentiometer knob PWM DC. Click the speed control board to increase the clockwise speed and decrease the counterclockwise speed; 5. The control cabinet 20 is provided with a power indicator light and a tooling rotation welding indicator light to display the current status of the equipment at any time; 6. The tooling rotates 365°, which is controlled by the time relay in the control circuit. Adjust the time relay dial button to increase or decrease the time and control the rotation degree.

[0041] Working principle: The operator first starts the control system, activates the welding machine and conducts a test run, carefully checks whether the functions of each button are normal, and confirms the safety and reliability of the protective measures. Secondly, install the tank end cover on the end cover brackets 41 at both ends to ensure that its position is accurate. Then, place the tank barrel on the middle roller 51 to stabilize it in place. Operate the clamping button of the control system to push the welding end of the tank end cover into the barrel at a uniform and stable speed to ensure accurate welding.

[0042] Subsequently, according to the position of the tank end cover and the tank barrel to be welded, the welding gun 62 is moved to the position of the welding position, and the position of the welding gun 62 is fixed by the welding fixture 61; after the welding operation is completed, the welding gun 62 is moved to another position to be welded.

[0043] Then, the transmission system is started to drive the tank barrel to rotate one circle to ensure the comprehensiveness and uniformity of the welding. Subsequently, the welding equipment is started and the parameters of the welding power supply are carefully adjusted according to the welding process requirements to achieve the best welding effect. Finally, the welding tool rotates 365° to complete the welding process of the tank barrel, ensuring the high consistency and stability of the weld quality.

[0044] The utility model describes a tank end cover welding device, 1. A supporting member can support the side wall of the tank barrel body, and two tank end covers are respectively hung on the end cover supporting members, and a clamping cylinder drives one end cover supporting member to move toward the other end cover supporting member, so as to complete the pre-installation of the two tank end covers at the two ends of the tank barrel body respectively, and the moving trajectory of the welding gun is limited by the welding fixing member, thereby ensuring the consistency and safety of the welding processing, and shortening the welding cycle; 2. The driving device drives one of the end cover supporting members to rotate, thereby realizing the rotation of the entire tank, which is conducive to improving the welding efficiency with the cooperation of the welding gun.

[0045] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tank end cover welding device, comprising a workbench (10), characterized in that: The workbench (10) is provided with a supporting member (50) for supporting the oil tank barrel; A clamping device (40) is provided above the supporting member (50), and the clamping device (40) comprises two end cover supporting members (41) which are relatively rotatably arranged on the working platform (10), wherein one end cover supporting member (41) is connected to a clamping cylinder (44) installed on the working platform (10), and the clamping cylinder (44) drives the end cover supporting member (41) to move toward the other end cover supporting member (41); The end cover support (41) away from the clamping cylinder (44) is driven to rotate by a driving device (80) arranged on the working table (10); A welding device (60) is provided above the clamping device (40), and the welding device (60) comprises a welding fixture (61) mounted on a workbench (10), wherein a welding gun (62) is provided in the welding fixture (61) and can reciprocate along its axial direction between the two end cover support members (41).

2. A tank end cover welding device according to claim 1, characterized in that: The supporting members (50) are provided with at least two groups, and the at least two groups of supporting members (50) are sequentially arranged between the two end cover supporting members (41).

3. A tank end cover welding device according to claim 2, characterized in that: Each group of supporting members (50) comprises two rollers (51) which are arranged on both sides of the center line of the two end cover supporting members (41).

4. A tank end cover welding device according to claim 1, characterized in that: The welding is connected with a smoke collecting device (70).

5. A tank end cover welding device according to claim 4, characterized in that: A smoke collecting bracket (71) which can be detachably connected to a smoke collecting device (70) is provided on the workbench (10) on one side of the welding fixture (61).

6. A tank end cover welding device according to claim 4 or 5, characterized in that: The workbench (10) is provided with a cable fixing member (90) capable of restraining the cables of the welding gun (62) and the smoke collecting device (70).

7. The tank end cover welding device according to claim 1, characterized in that: The driving device (80) comprises a driving motor (86) which is mounted on a workbench (10); an output end of the driving motor (86) is linked to an end cover support (41) away from the clamping cylinder (44) via a transmission assembly.

8. The tank end cover welding device according to claim 7, characterized in that: The transmission assembly comprises a driving sprocket (861) arranged on the output end of a driving motor (86), wherein the driving sprocket (861) is connected to a sprocket a (83) rotatably arranged on a workbench (10) via a transmission chain 1 (82); a sprocket b (831) is coaxially arranged on the sprocket a (83), and the sprocket b (831) is connected to a sprocket 2 (84) driving the end cover support (41) to rotate via a transmission chain 2 (85).

9. A tank end cover welding device according to claim 8, characterized in that: The diameter of the sprocket-b (831) is smaller than the diameter of the sprocket-a (83).

10. The tank end cover welding device according to claim 1, characterized in that: A control cabinet (20) for controlling the start and stop of a clamping cylinder (44), a driving device (80) and a welding gun (62) is also provided on one side of the workbench (10).

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