A welding machine for diesel oil tank

Abstract

The present application relates to the technical field of welding, in particular to a kind of welding machine for diesel engine oil tank, including rack, welding mechanism and three-dimensional moving mechanism and fixed mechanism installed on rack, the welding torch of welding mechanism is fixed on three-dimensional moving mechanism and can be controlled to move, the fixed mechanism of the present application includes first station, second station and third station, wherein, first station is fixed on rack, second station and third station are arranged on rack in a movable manner and are controlled to move on rack by first drive structure;Head is placed on first station and third station, cylinder is placed on second station, the first drive structure of the present application controls second station and third station to be close to each other, and synchronously moves to first station until the both ends of cylinder and head are attached to complete assembly, the present application can synchronously assemble two heads and cylinder, to ensure the efficiency of welding.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding machine for diesel engine fuel tanks. Background Technology

[0002] A diesel engine is a type of engine that obtains energy by burning diesel fuel. It has a wide range of applications, such as fluid transport systems (i.e., various pump sets), which typically use diesel engines as their power source.

[0003] Diesel engines, as a type of engine, consist of a fuel system, a valve train (including an intake system and an exhaust system), a lubrication system, a cooling system, and a starting system. Among these, the fuel tank is the fuel source for the fuel system, providing the essential fuel for its operation and is one of the most critical components of a diesel engine.

[0004] Currently, diesel engine fuel tanks are welded using circumferential welding technology. However, current welding machines can only weld two half-tanks to form a fuel tank (refer to the prior art disclosed in CN117620349B, entitled "A Pressure Vessel Welding Apparatus"). The manufacturing process of diesel engine fuel tanks differs from that of these half-tank type tanks. In diesel engine fuel tank production, plates are rolled into a cylindrical shape using a plate rolling machine, and then the butt welds on the side walls of the cylinder are welded to obtain a cylinder with open ends. Two caps (also called end caps) are then welded to the two ends of the cylinder. Therefore, welding a diesel engine fuel tank requires two welding operations. Thus, when welding a diesel engine fuel tank using existing welding machines, one cap needs to be assembled and welded to one end of the cylinder first, and then the other cap needs to be assembled and welded to the other end of the cylinder after the first weld is completed. This requires two assembly operations, so existing welding machines are not suitable for welding diesel engine fuel tanks.

[0005] Secondly, after welding is completed, the welding position needs to be inspected. Before the inspection, the welding slag needs to be cleaned, but the existing welding machines do not have the function of cleaning welding slag.

[0006] In summary, there is an urgent need to provide a welding machine suitable for welding diesel engine fuel tanks to solve the above problems. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a welding machine for diesel engine fuel tanks, which aims to solve the defect that the welding efficiency is affected by the incompatibility between the existing welding machine and the diesel engine fuel tank.

[0008] The technical solution of this invention is implemented as follows: A welding machine for diesel engine fuel tanks includes a frame, a welding mechanism, and a three-dimensional moving mechanism and a fixing mechanism mounted on the frame. The welding torch of the welding mechanism is fixed on the three-dimensional moving mechanism and can be controlled to move. The fixing mechanism of this invention includes: The first workstation is for placing the end caps; The second station is for placing the cylinder; The third workstation is for placing the end caps; The first station is fixed on the frame, while the second and third stations are movably mounted on the frame and controlled to move on the frame by the first drive structure. The first drive structure can control the second and third workstations to move closer to each other and move synchronously to the first workstation until both ends of the cylinder are fitted with the end cap to complete the assembly.

[0009] By adopting the above technical solution: The welding machine of the present invention has a fixing mechanism with a total of three stations: a first station, a second station, and a third station. During welding, two end caps (also called end caps) are placed on the first station and the third station respectively, and the cylinder is placed on the second station. Then, the first drive structure controls the first station, the second station, and the third station to move closer to each other, so that the cylinder on the second station is simultaneously assembled with the end caps on the first station and the third station. After the assembly is completed, the welding gun of the welding mechanism is controlled by the three-dimensional moving mechanism to weld the cylinder and each end cap in sequence.

[0010] During assembly, the present invention can simultaneously assemble two end caps and the cylinder, and perform unified welding after assembly. Unlike the prior art, it does not require two assembly steps. Furthermore, welding is interspersed between the two assembly steps, thereby improving welding efficiency and enabling the welding machine of the present invention to be adapted to the welding of diesel engine fuel tanks.

[0011] Preferably, the first driving structure includes: The outer casing has a transmission cavity, and the outer wall is provided with a groove that communicates with the transmission cavity; The drive shaft is rotatably connected to the transmission cavity, and its outer wall is integrally formed with an axially extending limiting rib, which is controlled by the first motor to rotate clockwise or counterclockwise. The lead screw is fixed and coaxially mounted on the drive shaft; The movable lead screw is coaxially mounted on the drive shaft and spaced apart from the fixed lead screw. It is provided with a first limiting groove for the sliding of the limiting rib, and the movable lead screw can move on the drive shaft. The first sleeve is fitted onto the fixed lead screw and mates with the fixed lead screw; The second sleeve is fitted onto the moving lead screw and engages with the moving lead screw; The first sleeve has a bearing installed at one end near the moving lead screw to support the rotation of the moving lead screw. The first sleeve and the second sleeve have a connecting seat that passes through the slide groove and connects to the second station or the third station.

[0012] Preferably, the first station includes a first station seat fixed to the frame and a head support structure installed on the first station seat; the third station includes a third station seat slidably connected to the frame and a head support structure installed on the third station seat, and the third station seat is fixedly connected to the connecting seat of the second rod sleeve. The head support structure includes: The head support roller is rotatably mounted on the first and third workstations and is used to support the rotation of the head. The head support is rotatably mounted on the first and third workstations and is used for the head to abut against.

[0013] Preferably, the second workstation includes: The second workstation seat is slidably connected to the frame and fixedly connected to the connecting seat of the first rod sleeve; The cylinder support roller is rotatably mounted on the second workstation seat and is used for placing the cylinder. Several sprockets are rotatably mounted on the second work station, and some of the sprockets are connected to the cylinder support rollers via a drive shaft; The drive chain is connected to each sprocket in a driving manner; The second workstation is also equipped with a second motor for controlling the rotation of any sprocket.

[0014] By adopting the above technical solution: The first drive structure of the present invention consists of two sets of "integrated" lead screw structures. The first drive structure is controlled by a motor to achieve the purpose of controlling the synchronous movement of the second and third workstations, so as to realize the rapid assembly of the cylinder and the end caps at both ends, thereby improving efficiency.

[0015] Preferably, the first and third workstations are further equipped with a slag cleaning device, the slag cleaning device comprising: The cleaning structure is movably mounted on the first and third workstations and has at least one cleaning brush. A reciprocating drive structure is installed on the first and third workstations and is used to control the reciprocating movement of the cleaning structure. The reciprocating drive structure includes a rotary disk rotatably mounted on the first workstation and the third workstation and spaced apart from the cleaning structure, a drive block eccentrically connected to the rotary disk, and a third motor for controlling the rotation of the rotary disk. The first and third workstations are slidably connected to a movable frame that is connected to the cleaning structure, and the drive block is slidably connected to the movable frame.

[0016] Preferably, the drive block has a second limiting groove for sliding connection of the movable frame, and the movable frame consists of a slide rod that can be slidably connected on the drive block and a drive rod connected between the slide rod and the cleaning structure.

[0017] Preferably, the cleaning structure includes: The slide rails are fixedly installed on the first and third workstations. A sliding seat is slidably connected to the slide rail and fixedly connected to one end of the movable frame; A cleaning brush is installed on the sliding seat.

[0018] Preferably, the sliding seat is recessed with a receiving groove, and a dust-collecting structure that can be controlled to swing by the second driving structure is rotatably connected in the receiving groove. The dust-collecting structure has a dust-collecting chamber connected to the dust-collecting source through a dust-collecting pipe. The cleaning brush is hinged to the opening of the receiving groove, and when the second drive structure controls the vacuuming structure to swing, it can drive the cleaning brush to maintain the first position or the second position. In the first position, the cleaning brush is lifted by the suction structure; In the second position, the cleaning brush is dragged into the suction chamber by the suction structure.

[0019] Preferably, the dust collection structure includes: The suction unit is rotatably connected to the receiving tank via a rotating shaft; The suction chamber is formed within the suction body and is open at one end, allowing the cleaning brush to enter; A scraper is fixedly installed at the opening of the suction chamber; As the cleaning brush enters the suction chamber, it comes into contact with the scraper.

[0020] Preferably, the dust collection chamber is composed of a first dust collection chamber and a second dust collection chamber that are spaced apart, and the scraper is located between the opening of the first dust collection chamber and the opening of the second dust collection chamber; The cleaning brush consists of a first cleaning brush and a second cleaning brush hinged to the opening of the receiving groove and corresponding to the first and second dust suction chambers, respectively. The second driving structure includes: The driven gear is connected to the rotating shaft via a shaft; The drive gear is rotatably connected to the sliding seat and meshes with the driven gear. The drive disc is rotatably connected to the sliding seat and is controlled to rotate by the fourth motor; The drive disk has an eccentrically mounted drive unit, and a rocker arm is fixedly connected to the drive gear. The rocker arm has a reciprocating groove for the drive unit to slide.

[0021] The slag cleaning device of the present invention has at least the following beneficial effects: 1. The cleaning structure of the present invention can be controlled to reciprocate, so that when cleaning the weld, the welding slag on the contact surface between the cleaning brush and the weld can be discharged as the cleaning brush moves, thereby ensuring the cleaning of the welding slag.

[0022] 2. The cleaning structure of the present invention consists of a dust suction structure and a cleaning brush, which can realize simultaneous cleaning and dust suction, and avoid welding slag from affecting the workshop environment.

[0023] 3. The present invention can also switch the posture of the cleaning brush through the dust suction structure, so that the cleaning brush can make closer contact with the welding area, thereby improving the cleaning effect of welding slag.

[0024] 4. The present invention has two cleaning brushes, which can be controlled by the dust collection structure to be held in a first position and a second position respectively. In the first position, the cleaning brush is lifted and makes closer contact with the welding point. In the second position, the other cleaning brush enters the dust collection chamber of the dust collection structure and is vacuumed, thus achieving self-cleaning.

[0025] 5. When the cleaning brush is self-cleaning, that is, during the process of switching the cleaning brush to the first or second position, the cleaning brush comes into contact with the scraper on the dust collection structure. The welding slag remaining on the cleaning brush can be removed by the scraper and sucked away by the dust collection chamber, thus completing the self-cleaning.

[0026] 6. Because the present invention is equipped with two cleaning brushes and a second drive structure for controlling the dust collection structure, the second drive structure can control the two cleaning brushes to switch alternately between the first position and the second position. That is, when one cleaning brush is self-cleaning, the other cleaning brush is in contact with the welding area to clean the welding slag. Therefore, it can be ensured that one cleaning brush is always working on cleaning welding slag, so that welding slag cleaning and cleaning brush self-cleaning can be carried out simultaneously. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a specific embodiment 1 of the present invention; Figure 2This is a schematic diagram of the structure after material loading in a specific embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the assembled cylinder and end cap of a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the three-dimensional moving mechanism and welding mechanism in specific embodiment 1 of the present invention; Figure 5 for Figure 4 Another visual image; Figure 6 This is a schematic diagram of the three-dimensional moving mechanism in specific embodiment 1 of the present invention; Figure 7 for Figure 6 Another visual image; Figure 8 This is a schematic diagram of the first driving structure in specific embodiment 1 of the present invention; Figure 9 for Figure 8 AA section view in the middle; Figure 10 for Figure 9 BB section view in the middle; Figure 11 This is a schematic diagram of the structure of the third workstation in specific embodiment 1 of the present invention; Figure 12 This is a schematic diagram of the structure of the second workstation in a specific embodiment 1 of the present invention; Figure 13 This is a schematic diagram of the interior of the motor housing at the first workstation in a specific embodiment 1 of the present invention; Figure 14 This is a schematic diagram of the structure of the third workstation in specific embodiment 2 of the present invention; Figure 15 for Figure 14 CC section view in the middle; Figure 16 for Figure 15 DD section view in the middle; Figure 17 This is a schematic diagram of the structure of the third workstation in specific embodiment 3 of the present invention; Figure 18 for Figure 17 EE section view; Figure 19 for Figure 18 Another state diagram; Figure 20 for Figure 17 FF section view; Figure 21 for Figure 20 Enlarged view of part A in the image; Figure 22 for Figure 21 GG section view in the image. Detailed Implementation

[0029] 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, and 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.

[0030] Example 1:

[0031] like Figures 1-13 As shown, the present invention discloses a welding machine for diesel engine oil tanks, including a frame 10, a welding mechanism 11, and a three-dimensional moving mechanism and a fixing mechanism mounted on the frame 10. The welding torch 110 of the welding mechanism 11 is fixed on the three-dimensional moving mechanism and can be controlled to move.

[0032] like Figures 4-7 As shown, the three-dimensional moving mechanism of this embodiment includes an x-axis moving device 20, a y-axis moving device 21, and a z-axis moving device 22; The x-axis moving device 20 is a servo motor-driven gear and rack system, specifically including an x-axis housing 200 mounted on the frame 10. An x-axis slide rail 201 and an x-axis rack 202 are fixedly connected inside the x-axis housing 200. The x-axis rack 202 is arranged parallel to the x-axis slide rail 201. It also includes an x-axis moving seat 204 slidably connected to the x-axis slide rail 201 via x-axis sliders 203 (four in total). (To facilitate demonstration of the x-axis moving device structure, three of the x-axis sliders 203 are moved to a visible position in this embodiment; in actual installation, all four x-axis sliders 203 are mounted on the x-axis...) The bottom of the movable seat 204 (which supports the x-axis movable seat 204 to slide on the x-axis slider 203) is equipped with an x-axis servo motor 205. At the bottom of the x-axis movable seat 204, there is an x-axis gear 206 that is controlled by the x-axis servo motor 205 to rotate clockwise or counterclockwise. The x-axis gear 206 meshes with the x-axis rack 202 and is separated from the x-axis slide rail 201 and the x-axis housing 200. That is to say, the x-axis gear can rotate freely. When it rotates, since the x-axis gear meshes with the x-axis rack, the x-axis movable seat 204 can be controlled to move back and forth in the x-axis direction.

[0033] The y-axis moving device 21 is a lead screw device, specifically including a y-axis housing 210 mounted on the x-axis moving seat 204, a y-axis lead screw 211 rotatably connected to the y-axis housing, the y-axis lead screw 211 being controlled by the y-axis servo motor 212 to rotate clockwise or counterclockwise, a y-axis lead screw bearing seat 213 cooperating on the y-axis lead screw 211, and a y-axis moving seat 214 mounted on the y-axis lead screw bearing seat 213. In this embodiment, y-axis slide rails 215, which are parallel to the y-axis lead screw 211, are also spaced on the y-axis housing 210. The y-axis moving seat 214 slides on the y-axis slide rails 215 via a y-axis slider 216. In this embodiment, the rotation of the y-axis lead screw is controlled by the y-axis servo motor to control the reciprocating movement of the y-axis moving seat in the y-axis direction.

[0034] The z-axis moving device 22 is also a lead screw device, specifically including a z-axis housing 220 mounted on the y-axis moving seat 214. A z-axis lead screw 221 is rotatably connected to the z-axis housing 220. The z-axis lead screw 221 is controlled by the z-axis servo motor 222 to rotate clockwise or counterclockwise. A z-axis lead screw bearing seat 223 is also mounted on the z-axis lead screw 221. A z-axis moving seat 224 is fixedly mounted on the z-axis bearing seat 223. The z-axis moving seat 224 is fixedly connected to the y-axis moving seat 214. The shaft housing 220 is provided with a z-axis slide rail 225, and a z-axis slider 226 is slidably connected on the z-axis slide rail 225 (again, for ease of demonstration, the z-axis slider 226 is moved to a visible position in this embodiment; in actual installation, the z-axis slider 226 is fixedly connected to the bottom of the z-axis moving seat 224). When the z-axis servo motor is started, since the z-axis moving seat and the y-axis moving seat are fixed, the z-axis moving seat cannot move in the z-axis direction. At this time, the z-axis housing 220 as a whole will reciprocate in the z-axis direction.

[0035] In this embodiment, the main unit 110 of the welding mechanism 11 is mounted on the x-axis moving seat 204 or the y-axis housing 210 via the main frame 111. The welding torch 110 of the welding structure 11 is fixed to the bottom end of the z-axis housing via the welding torch clamp 112. The welding mechanism 11 is a mature existing technology, so its principle will not be described in detail in this embodiment.

[0036] In addition to the three-dimensional moving mechanism provided in this embodiment, other three-dimensional moving mechanisms can also be used in other embodiments. The purpose is to control the welding torch 110 of the welding mechanism 11 to move in three-dimensional space so as to switch the welding position.

[0037] like Figures 1-3 As shown, the fixing mechanism in this embodiment includes: First station 31, for placing head 1a; Second station 32, for placing cylinder 1b; The third station 33 is for placing the end cap 1a; The first station 31 is fixed on the frame 10, and the second station 32 and the third station 33 are movably disposed on the frame 10 and controlled to move on the frame 10 by the first drive structure 40. The first drive structure 40 can control the second station 32 and the third station 33 to move closer to each other and move synchronously to the first station 31 until the two ends of the cylinder 1b are fitted with the end cap 1a to complete the assembly.

[0038] In this embodiment, a control box 1c is installed at the first workstation 31. The control box 1c is used to control the operation of the first workstation, the second workstation, the third workstation, the three-dimensional moving mechanism, and the welding mechanism in this embodiment.

[0039] like Figures 8-9 As shown, the first drive structure 40 includes: The outer casing 400 has a transmission cavity 401, and the outer wall is provided with a groove 402 communicating with the transmission cavity 401; The drive shaft 403 is rotatably connected to the transmission cavity 401, and its outer wall is integrally formed with an axially extending limiting rib 403a, which is controlled by the first motor 404 to rotate clockwise or counterclockwise. The fixed lead screw 405 is integrally formed with the drive shaft 403 and is coaxially arranged with the drive shaft 403. The movable lead screw 406 is coaxially sleeved on the drive shaft 403 and spaced apart from the fixed lead screw 405. It is provided with a first limiting groove for the limiting rib 403a to slide. The movable lead screw 406 can move on the drive shaft 403. The first sleeve 407 is sleeved on the fixed screw 405 and cooperates with the fixed screw 405. The first nut 407a, which cooperates with the fixed screw 405, is fixedly connected inside the first sleeve 407. The second sleeve 408 is sleeved on the movable lead screw 406 and cooperates with the movable lead screw 406. A second nut 408a that cooperates with the movable lead screw 406 is fixedly connected inside the second sleeve 408. In this embodiment, a bearing 409 is installed at one end of the first sleeve 407 near the movable lead screw 406 to support the rotation of the movable lead screw 406. A connecting seat 4a is fixedly connected to the first sleeve 407 and the second sleeve 408, passing through the slide groove 402 and connected to the second station 32 or the third station 33. In this embodiment, the shoulder 406a of the movable lead screw 406 is limited by the bearing 409 to prevent the movable lead screw 406 from disengaging from the bearing 409. A pressure cover 407a is also detachably connected to the end of the first sleeve 407 by bolts, thereby preventing the bearing 409 from disengaging from the first sleeve 407.

[0040] refer to Figure 11In this embodiment, the first and third workstations have the same structure, except that the first workstation is fixed to the frame 10, while the third workstation is fixed to the connecting seat 4a of the second sleeve 408. Specifically: The first station 31 in this embodiment includes a first station seat 310 fixed on the frame 10 and a head support structure installed on the first station seat 310; the third station 33 includes a third station seat 330 slidably connected to the frame 10 and a head support structure installed on the third station seat 330, and the third station seat 330 is fixedly connected to the connecting seat 4a of the second sleeve 408.

[0041] In this embodiment, a work station slide rail 3a is installed on the frame 10, and the third work station seat 330 is slidably connected to the work station slide rail 3a via a work station slider 3b.

[0042] Taking the third workstation as an example, the head support structure in this embodiment includes: The head support roller 331 is rotatably mounted on the first work station 310 and the third work station 330 and is used to support the rotation of the head 1a. In this embodiment, the first work station 310 and the third work station 330 are provided with hinge seats 331a for the head support roller 331 to be rotatably connected. The head support seat 332 is rotatably mounted on the first station seat 310 and the third station seat 330, and is used for the head 1a to abut against. When the head 1a is placed on the head support roller 331, one side of the head 1a rests against the head support seat 332.

[0043] In this embodiment, a motor housing 334 is provided on the first workstation and the third workstation, and the end cap support 332 is rotatably connected to the motor housing 334. The motor housing 334 is provided with a motor (not shown in the figure) for controlling the rotation of the end cap support 332.

[0044] like Figure 12 As shown, the second station 32 in this embodiment includes: The second workstation seat 320 is slidably connected to the workstation slide rail 3a of the machine frame via the workstation slider 3b, and is fixedly connected to the connecting seat 4a of the first rod sleeve 407. The cylinder support roller 321 is rotatably mounted on the second work station 320 and is used to place the cylinder 1b. Several sprockets (four in this embodiment, referred to as 322a, 322b, 322c and 322d respectively) are rotatably mounted on the second workstation seat 320, and sprockets 322b and sprockets 322c are connected to the cylinder support roller 321 via a drive shaft 323; The drive chain 324 is connected to each sprocket in a drive connection; The second workstation 320 is also equipped with a second motor 320a for controlling the rotation of the sprocket 322a.

[0045] In this embodiment, the motor in the motor box of the first workstation, the second motor on the second workstation, and the motor in the motor box of the third workstation are controlled synchronously by the control box 1c. That is, one master motor and the other two are slave motors. It is important to note that the motor shafts of the second and third workstations face the same direction; therefore, the motors of the second and third workstations can directly drive the head support or sprocket to rotate. However, the motor in the first workstation faces a different direction than the motors of the second and third workstations. Therefore, the first workstation needs to use a gear structure for reversing, such as... Figure 13 As shown, the gear structure includes a first reversing gear 31a and a second reversing gear 31b. The second reversing gear 31b is connected to the head support 332 via a transmission shaft, while the first reversing gear 31 is connected to a motor. In this way, the head support at the first station and the head support at the third station can rotate in the same direction. That is to say, when the head support and the cylinder support roller drive the head and cylinder to rotate, it is necessary to ensure that the head and cylinder are synchronized, at the same speed, and in the same direction.

[0046] refer to Figures 1-13 The welding principle in this embodiment is as follows: During welding, the cylinder and the two end caps are placed on the second, first, and third stations respectively, and the end caps and cylinder are adjusted to be coaxial. Then, the first drive structure is controlled to move the third and second stations closer to the first station until the cylinder and the end caps at both ends are assembled. Then, the welding gun is controlled by the three-dimensional moving mechanism to aim at the welding position of the cylinder and each end cap and weld them in sequence.

[0047] The first drive structure in this embodiment is integrated from two sets of lead screw structures. It enables the simultaneous control of the second and third workstations, saving one drive structure (currently, two drive structures are typically required to control the second and third workstations separately). In operation, the second drive structure in this embodiment controls the rotation of the drive shaft, causing both the fixed and movable lead screws to rotate simultaneously. The rotation of the fixed lead screw allows the first sleeve to move axially, and this movement controls the movable lead screw to move axially on the drive shaft. In other words, when the first sleeve moves, the movable lead screw also moves, allowing the second sleeve to move synchronously. Furthermore, the rotation of the movable lead screw controls the movement of the second sleeve. Therefore, the third and second workstations can move synchronously, with the movement of the third workstation influenced by the movement of the second workstation. This perfectly matches the goal of the third and second workstations moving synchronously towards the first workstation, ensuring that when the cylinder at the second workstation is assembled with the end cap at the first workstation, the end cap at the third workstation can also be assembled with the cylinder at the second workstation.

[0048] In this embodiment, during welding, the welding torch can be controlled to perform multi-point electric welding on the end cap and the cylinder for preliminary fixation before welding. During welding, the cylinder and the end cap are rotated by the cylinder support roller and the end cap support seat, so that the welding positions between the cylinder and the end cap are welded by the welding torch in sequence.

[0049] Example 2:

[0050] like Figures 14-16 As shown, in this embodiment, welding slag cleaning devices are also provided on the first workstation 310 and the third workstation 330. Taking the third workstation as an example, the welding slag cleaning device in this embodiment includes: The cleaning structure is movably mounted on the first workstation 310 and the third workstation 330, and is equipped with a cleaning brush 51. A reciprocating drive structure is installed on the first workstation 310 and the third workstation 330 and is used to control the reciprocating movement of the cleaning structure. The reciprocating drive structure of this embodiment includes a rotary disk 60 rotatably connected to the first workstation 310 and the third workstation 330 and spaced apart from the cleaning structure, a drive block 61 eccentrically rotatably connected to the rotary disk 60, and a third motor 62 for controlling the rotation of the rotary disk 60. The first workstation 310 and the third workstation 330 are slidably connected to a movable frame that is connected to the cleaning structure, and the drive block 61 is slidably connected to the movable frame.

[0051] In this embodiment, a second limiting groove 61a is formed on the drive block 61 for sliding connection of the movable frame. The movable frame consists of a slide rod 70 that can be slidably connected on the drive block 61 and a drive rod 71 connected between the slide rod 70 and the cleaning structure. The slide rod 70 slides in the second limiting groove 61a, or in other words, the drive block 61 slides on the slide rod.

[0052] The cleanup structure in this embodiment includes: The slide rail 500 is fixedly installed on the first workstation 310 and the third workstation 330. In this embodiment, the first workstation 310 and the third workstation 330 are recessed with an active area 501, and the slide rail 500 is installed on the two side walls of the active area 501. The sliding seat 502 is slidably connected to the slide rail 500 and fixedly connected to one end of the drive rod 71 of the movable frame; Cleaning brush 51 is installed on the sliding seat 502.

[0053] In this embodiment, a receiving frame 80 is fixedly connected to the first workstation 310 and the third workstation 330, and the bottom inner wall of the active area near the receiving frame 80 is inclined.

[0054] refer to Figures 14-16 In this embodiment, a waste slag cleaning device is added to the first and third workstations. The waste slag cleaning device can clean the weld after welding is completed and the weld has cooled and solidified, so that workers can inspect the weld.

[0055] During cleaning, the cylinder support roller and the end cap support seat rotate continuously, causing the welded oil tank to rotate. While the oil tank rotates, the third motor controls the rotating disk to rotate, causing the drive block to rotate with the rotating disk. Since the moving frame slides on the drive block 61 and the drive block is rotatably connected to the rotating disk, when the rotating disk rotates, it drives the moving frame to move back and forth, and controls the sliding seat to move back and forth in the active area. During the reciprocating movement, the cleaning brush is used to clean the weld seam of the oil tank, and the cleaned weld slag falls into the receiving frame.

[0056] It is worth mentioning that when cleaning welding slag, workers can choose the appropriate welding slag hammer according to different welding processes. That is, when the oil tank is rotating, the welding slag hammer is used to tap the weld appropriately and in conjunction with the cleaning brush to clean the welding slag at the weld position of the oil tank. After cleaning, the workers inspect the weld. If it meets the qualified standard, it is unloaded. If it does not meet the qualified standard, it can be repaired by welding.

[0057] In summary, this embodiment allows for the cleaning of welding slag before unloading, eliminating the need to clean the slag after removing the oil tank and avoiding the need for re-welding if the weld is substandard.

[0058] Example 3

[0059] like Figures 17-22 As shown, the sliding seats 502 of the first workstation 310 and the third workstation in this embodiment differ from those in Embodiment 2. In this embodiment, the sliding seats 502 are recessed with a receiving groove 90, and a dust-collecting structure that can be controlled to swing by the second drive structure is rotatably connected in the receiving groove 90. The dust-collecting structure has a dust-collecting chamber connected to the dust-collecting source through a dust-collecting pipe. Taking the third workstation 330 as an example, the bottom of the dust-collecting chamber is provided with a dust discharge port 921, and the bottom of the sliding seat 502 and the bottom of the third workstation 330 are provided with a pipe opening 922. The dust-collecting pipe 91 passes through the pipe opening and connects to the dust discharge port 921. In this embodiment, the dust-collecting source is a vacuum cleaner in the workshop (such as a bag filter).

[0060] In this embodiment, the cleaning brush is attached to the opening of the receiving groove 90. When the second drive structure controls the vacuuming structure to swing, it can drive the cleaning brush to maintain the first position or the second position. In the first position, the cleaning brush is lifted by the suction structure, such as Figure 19 The cleaning brush on the right; In the second position, the cleaning brush is dragged into the suction chamber by the suction structure, such as... Figure 19 The cleaning brush on the left.

[0061] The dust collection structure in this embodiment includes: The suction body 93 is rotatably connected to the receiving groove 90 via the rotating shaft 94; The suction chamber is formed inside the suction body 93, and one end is open to allow the cleaning brush to enter; Scraper 93a is fixedly installed at the opening of the suction chamber; As the cleaning brush enters the suction chamber, it comes into contact with the scraper 93a.

[0062] In this embodiment, the suction chamber is composed of a first suction chamber 92a and a second suction chamber 92b that are spaced apart, and the scraper 93a is located between the opening of the first suction chamber 92a and the opening of the second suction chamber 92b. The cleaning brush consists of a first cleaning brush 51a and a second cleaning brush 51b, which are hinged to the opening of the receiving groove 90 and correspond to the first suction chamber 92a and the second suction chamber 92b, respectively.

[0063] In this embodiment, the bottom of the first cleaning brush 51a and the second cleaning brush 51b is provided with a groove 94, and the two sides of the groove 94 are recessed with limiting grooves 94a. The vacuum body 93 is provided with a top frame 94b, and a sliding shaft 94c is fixedly connected to the top frame 94b. The two ends of the sliding shaft 94c slide in the limiting groove 94a. Thus, when the vacuum body moves, the sliding shaft 94c can drive the cleaning brush to switch different positions by sliding in the limiting groove 94a.

[0064] The second driving structure in this embodiment includes: The driven gear 95 is connected to the rotating shaft 94 via a shaft; The drive gear 96 is rotatably connected to the sliding seat 502 and meshes with the driven gear 95. The drive disk 97 is rotatably connected to the sliding seat 502 and is controlled to rotate by the fourth motor 98; The drive disk 97 is eccentrically provided with a drive part 97a, and a rocker arm 99 is fixedly connected to the drive gear 96. The rocker arm 99 is provided with a reciprocating groove 99a for the drive part 97a to slide.

[0065] In this embodiment, the sliding seat 502 is provided with a chamber for mounting the second drive structure.

[0066] refer to Figures 17-22 When treating welding slag, residual welding slag on the cleaning brush usually affects the cleaning effect. In severe cases, the cleaning brush carries welding slag and slides on the surface of the oil tank, which not only affects the cleaning effect but also damages the surface of the oil tank. Therefore, this embodiment provides a cleaning structure with self-cleaning.

[0067] When cleaning welding slag, the cylinder of the oil tank is supported by the cylinder support roller, and the end cap is supported by the end cap support roller. Thus, the oil tank can be controlled to rotate during cleaning. When the oil tank rotates, the fourth motor also starts and controls the drive disc to rotate. The drive part on the drive disc controls the drive gear to swing back and forth, thereby controlling the driven gear to rotate back and forth clockwise or counterclockwise, further driving the dust collector to swing in the receiving tank.

[0068] When the vacuum cleaner body swings, it can lift one of the cleaning brushes, causing it to contact the oil tank to remove welding slag. The other cleaning brush is carried into the suction chamber by the vacuum cleaner body for suction. During the process of this cleaning brush entering the suction chamber, it comes into contact with the scraper on the vacuum cleaner body. The scraper can scrape off the welding slag on the cleaning brush and make it fall into the suction chamber, thus completing the self-cleaning process. During the reciprocating swing of the vacuum cleaner body, it can alternately control different cleaning brushes to contact the oil tank or enter the suction chamber, thus ensuring that each cleaning brush performs self-cleaning before cleaning welding slag, thereby improving the cleaning effect.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding machine for diesel engine fuel tanks, comprising a frame (10), a welding mechanism (11), and a three-dimensional moving mechanism and a fixing mechanism mounted on the frame (10), wherein the welding torch (110) of the welding mechanism (11) is fixed on the three-dimensional moving mechanism and can be controlled to move, characterized in that: The fixing mechanism includes: The first workstation (31) is for placing the end caps; The second station (32) is for placing the cylinder; The third station (33) is for placing the end caps; The first station (31) is fixed on the frame (10), and the second station (32) and the third station (33) are movably mounted on the frame (10) and controlled to move on the frame (10) by the first drive structure (40). The first drive structure (40) can control the second station (32) and the third station (33) to move closer to each other and move synchronously to the first station (31) until the two ends of the cylinder are fitted with the end cap to complete the assembly; The first station (31) includes a first station seat (310) fixed on the frame (10) and a head support structure installed on the first station seat (310); the third station (33) includes a third station seat (330) slidably connected to the frame (10) and controlled to move by the first drive structure (40) and a head support structure installed on the third station seat (330); The first workstation (310) and the third workstation (330) are also equipped with a slag cleaning device, the slag cleaning device comprising: The cleaning structure is movably mounted on the first workstation (310) and the third workstation (330) and has at least one cleaning brush (51). A reciprocating drive structure is installed on the first workstation (310) and the third workstation (330) and is used to control the reciprocating movement of the cleaning structure; The cleanup structure includes: The slide rail (500) is fixedly installed on the first workstation (310) and the third workstation (330); The sliding seat (502) is slidably connected to the slide rail (500) and fixedly connected to one end of the movable frame; A cleaning brush (51) is installed on the sliding seat (502); The sliding seat is recessed with a receiving groove (90), and a dust-collecting structure that can be controlled to swing by the second drive structure is rotatably connected in the receiving groove (90). The dust-collecting structure has a dust-collecting chamber connected to the dust-collecting source through a dust-collecting pipe. The cleaning brush (51) is hinged to the opening of the receiving groove (90), and when the second drive structure controls the vacuuming structure to swing, it can drive the cleaning brush (51) to maintain the first position or the second position. In the first position, the cleaning brush (51) is lifted by the suction structure; In the second position, the cleaning brush (51) is dragged into the suction chamber by the suction structure; The dust collection structure includes: The suction body (93) is rotatably connected to the receiving groove (90) via a rotating shaft (94); The suction chamber is formed inside the suction body (93) and is open at one end, allowing the cleaning brush to enter; A scraper (93a) is fixedly installed at the opening of the suction chamber; As the cleaning brush enters the suction chamber, it comes into contact with the scraper (93a); The suction chamber is composed of a first suction chamber (92a) and a second suction chamber (92b) that are spaced apart, and a scraper (93a) is located between the opening of the first suction chamber (92a) and the opening of the second suction chamber (92b). The cleaning brush (51) consists of a first cleaning brush (51a) and a second cleaning brush (51b) hinged to the opening of the receiving groove (90) and corresponding to the first dust suction chamber (92a) and the second dust suction chamber (92b) respectively.

2. The welding machine for diesel engine fuel tanks according to claim 1, characterized in that: The first driving structure (40) includes: The outer casing (400) has a transmission cavity (401) and the outer wall is provided with a groove (402) communicating with the transmission cavity (401). The drive shaft (403) is rotatably connected to the transmission cavity (401), and its outer wall is integrally formed with an axially extending limiting rib (403a), which is controlled by the first motor (404) to rotate clockwise or counterclockwise. The lead screw (405) is fixed and coaxially mounted on the drive shaft (403); The movable lead screw (406) is coaxially mounted on the drive shaft (403) and spaced apart from the fixed lead screw (405). It is provided with a first limiting groove for the limiting rib (403a) to slide. The movable lead screw (406) can move on the drive shaft (403). The first sleeve (407) is fitted onto the fixed lead screw (405) and cooperates with the fixed lead screw (405); The second sleeve (408) is fitted onto the moving lead screw (406) and cooperates with the moving lead screw (406); Among them, the first sleeve (407) is equipped with a bearing (409) that supports the rotation of the moving screw (406) at one end near the moving screw (406), and the first sleeve (407) and the second sleeve (408) are fixedly connected with a connecting seat (4a) that passes through the slide groove (402) and is connected to the second station (32) or the third station (33).

3. The welding machine for diesel engine fuel tanks according to claim 2, characterized in that: The third workstation seat (330) is fixedly connected to the connecting seat (4a) of the second rod sleeve (408); The head support structure includes: The head support roller (331) is rotatably mounted on the first station seat (310) and the third station seat (330) and is used to support the rotation of the head; The head support (332) is rotatably mounted on the first station seat (310) and the third station seat (330) and is used for the head to abut against.

4. A welding machine for diesel engine fuel tanks according to claim 2 or 3, characterized in that: The second workstation (32) includes: The second workstation seat (320) is slidably connected to the frame (10) and fixedly connected to the connecting seat (4a) of the first sleeve (407); The cylinder support roller (321) is rotatably mounted on the second work station seat (320) and is used for placing the cylinder; Several sprockets are rotatably mounted on the second work station (320), and some of the sprockets are connected to the cylinder support roller (321) via a drive shaft; A drive chain (324) is connected to each sprocket in a drive configuration; The second workstation (320) is also equipped with a second motor (320a) for controlling the rotation of any sprocket.

5. A welding machine for diesel engine fuel tanks according to claim 3, characterized in that: The reciprocating drive structure includes a rotary disk (60) rotatably disposed on the first workstation (310) and the third workstation (330) and spaced apart from the cleaning structure, a drive block (61) eccentrically connected to the rotary disk (60), and a third motor (62) for controlling the rotation of the rotary disk (60). The first workstation (310) and the third workstation (330) are slidably connected to a movable frame that is connected to the cleaning structure, and the drive block (61) is slidably connected to the movable frame.

6. A welding machine for diesel engine fuel tanks according to claim 5, characterized in that: The drive block (61) has a second limiting groove (61a) for sliding connection of the movable frame. The movable frame consists of a slide rod (70) that can be slidably connected on the drive block (61) and a drive rod (71) connected between the slide rod (70) and the cleaning structure.

7. A welding machine for diesel engine fuel tanks according to claim 1, characterized in that: The second driving structure includes: The driven gear (95) is connected to the rotating shaft (94) via a shaft; The drive gear (96) is rotatably connected to the sliding seat (502) and meshes with the driven gear (95); The drive disk (97) is rotatably connected to the sliding seat (502) and is controlled to rotate by the fourth motor (98); The drive disk (97) is eccentrically provided with a drive part (97a), and a rocker arm (99) is fixedly connected to the drive gear (96). The rocker arm (99) is provided with a reciprocating groove (99a) for the drive part (97a) to slide.

Images