A seam welding positioning mechanism for an oil reservoir

Abstract

The utility model discloses a kind of oil storage cylinder seam welding positioning mechanisms, a kind of oil storage cylinder seam welding positioning mechanisms, including ring welding seam machine body and the placing table for placing workpiece driven by driving motor, further include: mounting plate is installed on the placing table by bolt, slidingly set with connecting plate in four corners on the mounting plate, the arc plate for abutting against workpiece is set on the connecting plate by drive member telescopic, the utility model is driven four groups of gear and screw rod rotation by annular slide plate driving annular rack synchronous, make four corner connecting plate and arc plate synchronous close to workpiece, cooperate the arc surface structure and anti-skid gasket of arc plate and circular pipe adaptation, realize the four-way uniform clamping and anti-skid fixed of workpiece, while internal support and external clamping force synergistically offset welding thermal stress, effectively avoid workpiece deviation, sliding and deformation, guarantee the coaxial degree of end cover and circular pipe, ensure that weld width is uniform.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a seam welding positioning mechanism for an oil storage cylinder. Background Technology

[0002] In industrial hydraulic systems, lubricating oil storage equipment, and various fluid conveying devices, the oil reservoir is a core component ensuring stable system operation. Its sealing performance and structural strength directly affect equipment safety and fluid storage reliability. The oil reservoir typically consists of a circular tube and an end cap. The connection between the two requires a circumferential welding process to achieve a sealed connection. During this process, a placement table (used to hold the end cap) rotates the workpiece (the end cap and circular tube assembly) under the drive of a motor, cooperating with the circumferential welding machine to complete the circumferential weld. To prevent radial deformation of the circular tube under welding thermal stress and clamping force, a support component is usually installed inside the circular tube to maintain its structural rigidity. The external positioning mechanism must accurately position and stably clamp the workpiece, ensuring the coaxiality and docking accuracy of the end cap and the circular tube. Therefore, the performance of the positioning mechanism directly determines the welding quality and production efficiency of the oil reservoir.

[0003] During equipment operation, certain problems exist. On the one hand, traditional positioning mechanisms often use 2-3 rigid clamping plates or independently driven positioning components for clamping. These components have line contact or small-area contact with the arc surface of the circular workpiece, resulting in uneven force distribution and a lack of dedicated anti-slip structures. When the placement table rotates the workpiece for welding, centrifugal force and welding vibration can easily cause the workpiece to shift or slide, leading to a misalignment between the end cap and the circular tube, resulting in uneven circumferential weld width and incomplete welds. At the same time, the clamping force of the external positioning mechanism is difficult to match with the supporting force of the internal support components of the circular tube. Welding thermal stress can also easily cause workpiece deformation, further damaging the sealing performance and structural strength of the oil reservoir. On the other hand, the structure with multiple independently driven positioning components requires individual calibration, which is cumbersome and time-consuming. Moreover, the positioning components and the placement table are mostly fixedly connected, making it difficult to flexibly adjust the clamping range according to the different diameters of circular tubes or end caps. When changing workpieces, it is necessary to frequently change dedicated fixtures, which not only increases equipment costs but also significantly extends production changeover time, making it difficult to adapt to diverse production needs and restricting the improvement of overall welding efficiency. Therefore, we urgently need an oil reservoir seam welding positioning mechanism to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a seam welding positioning mechanism for an oil storage tank. By using a ring rack to drive four sets of gears and threaded rods to synchronously drive the connecting plate, and in conjunction with an arc-shaped plate and anti-slip pads, the workpiece can be uniformly clamped in four directions, ensuring coaxiality, avoiding welding misalignment, and improving the welding quality and sealing performance of the oil storage tank.

[0005] According to a first aspect of the present invention, an oil storage tank seam welding positioning mechanism is provided, including a circumferential welding machine body and a placement platform for placing workpieces driven by a drive motor, and further including: a mounting plate mounted on the placement platform by bolts, wherein connecting plates are slidably provided at the four corners of the mounting plate, and an arc-shaped plate for pressing against the workpiece is provided on the connecting plate by a drive component; and a toggle part provided on the mounting plate for driving the connecting plates to move.

[0006] Optionally, the drive unit includes a push-pull clamp detachably mounted on the connecting plate, wherein the clamping end of the push-pull clamp has a threaded hole, and the connection of the arc plate is threaded into the threaded hole.

[0007] Optionally, a pad for anti-slip is fixedly connected to the arc-shaped plate.

[0008] Optionally, the actuating part includes a rectangular groove formed on the mounting plate and corresponding to the position of the connecting plate. A threaded rod is rotatably connected in the rectangular groove. The connecting plate is threadedly connected to the threaded rod at its connection point. When the threaded rod rotates, the connecting plate moves closer to or further away from the placement platform.

[0009] Optionally, a gear for driving the threaded rod to rotate is fixedly installed on a smooth part of the threaded rod.

[0010] Optionally, an annular slide rail is fixedly installed on the side of the mounting plate, and an annular slide plate is slidably connected inside the annular slide rail. An annular rack is fixedly installed on the annular slide plate, and the gear meshes with the annular rack. When the annular slide plate rotates along the path of the annular slide rail, the annular rack drives the gear to rotate.

[0011] 1. According to one embodiment of this disclosure, the oil reservoir seam welding positioning mechanism drives four sets of gears and threaded rods to rotate synchronously through an annular sliding plate and an annular rack, so that the four corner connecting plates and the arc plate move closer to the workpiece synchronously. With the arc surface structure of the arc plate and the circular tube and the anti-slip pad, the workpiece is uniformly clamped and fixed in four directions. At the same time, the internal support and the external clamping force work together to offset the welding thermal stress, effectively avoiding workpiece displacement, sliding and deformation, ensuring the coaxiality of the end cap and the circular tube, ensuring the uniform weld width, significantly improving the welding quality and sealing performance of the oil reservoir, and solving the problem of uneven force distribution and easy weld defects caused by traditional positioning mechanisms.

[0012] 2. According to one embodiment of this disclosure, the oil reservoir seam welding positioning mechanism enables convenient replacement of the mounting plate through bolt connection and quick assembly and disassembly of the arc plate and push-pull clamp through threaded connection, which can flexibly adapt to oil reservoir workpieces of different specifications; moreover, the push-pull clamp can quickly complete the clamping and releasing operation, and the transmission structure of the ring rack and gear eliminates the traditional step of calibrating multiple positioning parts one by one, which greatly shortens the workpiece positioning and changeover time, reduces equipment maintenance costs and operation difficulty, effectively improves the welding production efficiency of oil reservoirs, adapts to diversified production needs, and solves the problems of poor versatility and low adjustment efficiency of traditional positioning mechanisms.

[0013] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0015] Figure 1 This is a first-view overall structural schematic diagram of a seam welding positioning mechanism for an oil storage tank in one embodiment; Figure 2 This is a second-view schematic diagram of the overall structure of a seam welding positioning mechanism for an oil storage tank in one embodiment. Figure 3 This is a first-view schematic diagram of the mounting plate structure of a seam welding positioning mechanism for an oil reservoir in one embodiment. Figure 4 This is a schematic diagram of the mounting plate structure from a second perspective of an oil reservoir seam welding positioning mechanism in one embodiment. Figure 5 This is a partial cross-sectional view of the mounting plate of a seam welding positioning mechanism for an oil reservoir in one embodiment. Figure 6 This is a schematic diagram of the annular rack structure of a seam welding positioning mechanism for an oil storage tank in one embodiment.

[0016] The following are marked in the diagram: 1. Circumferential welding machine body; 2. Placement platform; 3. Mounting plate; 4. Connecting plate; 5. Arc plate; 6. Push-pull clamp; 7. Threaded hole; 8. Washer; 9. Rectangular groove; 10. Threaded rod; 11. Gear; 12. Circular slide rail; 13. Circular sliding plate; 14. Circular rack. Detailed Implementation

[0017] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0018] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0019] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0020] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0021] like Figure 1-6 As shown, an oil storage tank seam welding positioning mechanism includes a circumferential welding machine body 1 and a placement platform 2 driven by a drive motor for placing workpieces.

[0022] Here, during operation, the welding torch assembly of the circumferential welding machine 1 first adjusts to the preset welding position according to the weld seam trajectory between the oil reservoir end cap and the circular tube, and maintains a constant distance between the welding torch and the workpiece surface to ensure stable welding parameters. When the placement platform 2, driven by the drive motor, carries the workpiece (including the end cap, circular tube, and internal support components) precisely positioned by the positioning mechanism (including the arc plate 5 and connecting plate 4), rotating at a constant speed, the circumferential welding machine 1 simultaneously starts the welding program. The welding torch continuously outputs welding energy such as electric arc and laser along the circumferential weld seam trajectory of the workpiece, and can automatically adjust welding speed, current / voltage, and other parameters according to preset parameters. During the welding process, the position of the welding torch of the circumferential welding machine 1 adapts in real time with the rotation of the workpiece to ensure that it is always aligned with the weld seam position. After the workpiece completes one revolution, the welding torch automatically stops welding and resets, completing one circumferential welding operation of the oil reservoir. The entire operation process, together with the stable clamping of the positioning mechanism and the synchronous rotation of the workpiece, forms an efficient synergy to ensure welding quality.

[0023] It should be noted that the circumferential welding machine body 1 is a direct reference to the conventional technical solution, and will not be elaborated on here.

[0024] It also includes a mounting plate 3 that is bolted to the placement platform 2. A connecting plate 4 is slidably provided at each of the four corners of the mounting plate 3. An arc-shaped plate 5 for pressing against the workpiece is provided on the connecting plate 4 through a drive component.

[0025] Here, the mounting plate 3 is bolted to the placement platform 2. On the one hand, the bolt connection method facilitates the disassembly and replacement of the mounting plate 3. When the mounting plate 3 is worn or damaged, there is no need to repair or replace the entire placement platform 2, thus reducing maintenance costs. On the other hand, the mounting plate 3 of the appropriate size can be replaced according to the different specifications of the oil storage cylinder workpiece, which improves the versatility of the entire positioning mechanism to a certain extent and solves the problem that the traditional positioning parts are fixedly connected to the placement platform and are difficult to adapt to different workpieces.

[0026] Furthermore, connecting plates 4 are slidably installed at the four corners of the mounting plate 3. The structure distributed at the four corners can clamp and position the workpiece from four directions. Compared with the traditional positioning method of 2 to 3 clamping plates, the force is more uniform, which can effectively avoid workpiece displacement caused by uneven force, ensure the coaxiality of the end cap and the circular tube, thereby improving the welding quality and improving the problems of coaxiality deviation and poor weld quality caused by uneven force distribution in traditional mechanisms.

[0027] Furthermore, an arc-shaped plate 5 is telescopically mounted on the connecting plate 4 via a driving component. The arc-shaped structure of the arc-shaped plate 5 is adapted to the outer wall shape of the circular tube of the oil reservoir, enabling surface contact with the arc surface of the circular workpiece. Compared with the line contact or small surface contact of traditional flat clamping plates, this greatly increases the contact area, making the clamping force distribution more uniform. This effectively avoids excessive local pressure that could scratch the workpiece surface, while also improving the clamping stability of the workpiece. It prevents the workpiece from shifting or sliding due to centrifugal force and welding vibration during the welding process driven by the placement table 2, further ensuring welding accuracy and the sealing performance of the oil reservoir. This solves the problems of poor clamping stability and easy scratching of the workpiece caused by traditional flat clamping plates.

[0028] The driving component includes a push-pull clamp 6 that is detachably mounted on the connecting plate 4. The clamping end of the push-pull clamp 6 is provided with a threaded hole 7. The connection of the arc plate 5 is threaded into the threaded hole 7. A pad 8 for anti-slip is fixedly connected to the arc plate 5.

[0029] Here, the driving component adopts a push-pull clamp 6 that is detachably mounted on the connecting plate 4. The push-pull clamp 6 is easy to operate and can quickly extend and retract the arc plate 5, thereby quickly clamping and releasing the workpiece. Compared with the traditional manual tightening of bolts or independent small hydraulic cylinder drive, it greatly improves the operating efficiency and reduces the workpiece positioning time. At the same time, the threaded hole 7 opened at the clamping end of the push-pull clamp 6 is threadedly connected to the arc plate 5. On the one hand, the threaded connection is stable and reliable, which can ensure the stability of the arc plate 5 during the clamping process. On the other hand, it is convenient to disassemble and replace the arc plate 5. When the arc plate 5 is worn or needs to be adapted to round tubes of different diameters, the corresponding arc plate 5 can be quickly replaced without replacing the entire driving component or connecting plate 4. This reduces equipment maintenance costs and changeover time, improves the versatility of the mechanism, and solves the problems of traditional positioning components being difficult to replace and having poor adaptability.

[0030] Furthermore, the shim 8 can effectively increase the friction between the arc plate 5 and the outer wall of the workpiece, further preventing relative slippage during workpiece rotation, ensuring the stability of the welding position, and avoiding problems such as uneven weld width, incomplete welding, and missing welding caused by slippage. At the same time, the shim 8 can also act as a buffer, reducing hard collisions between the arc plate 5 and the workpiece, further protecting the workpiece surface from damage, and making up for the problem of traditional mechanisms lacking a dedicated anti-slip structure and being prone to workpiece slippage.

[0031] A toggle part is provided on the mounting plate 3 for driving the connecting plate 4 to move. The toggle part includes a rectangular groove 9 opened on the mounting plate 3 and corresponding to the position of the connecting plate 4. A threaded rod 10 is rotatably connected in the rectangular groove 9. The connection of the connecting plate 4 is threadedly connected to the threaded rod 10. When the threaded rod 10 rotates, the connecting plate 4 moves closer to or further away from the placement platform 2. A gear 11 for driving the threaded rod 10 to rotate is fixedly installed on the smooth part of the threaded rod 10.

[0032] Here, the rectangular groove 9 guides the movement of the connecting plate 4, ensuring the linearity of its movement and thus ensuring that the arc plate 5 can accurately align with the workpiece clamping position, improving positioning accuracy. The threaded drive of the threaded rod 10 features high precision and good self-locking, accurately controlling the movement distance of the connecting plate 4, thereby precisely adjusting the clamping position and clamping force between the arc plate 5 and the workpiece. Compared with traditional manual adjustment or unguided movement methods, this significantly improves adjustment accuracy. Simultaneously, the self-locking property ensures that the connecting plate 4 maintains a stable position during workpiece clamping, preventing movement due to external forces, further ensuring clamping stability and solving the problems of low adjustment accuracy and easily changing clamping position in traditional mechanisms.

[0033] Furthermore, the gear 11 fixedly installed on the smooth part of the threaded rod 10 provides a convenient power transmission component for the rotation of the threaded rod 10. The gear 11 can easily drive the threaded rod 10 to rotate, which is more labor-saving and convenient than directly rotating the threaded rod 10, reducing the difficulty of operation, ensuring the uniformity of the rotation of the threaded rod 10, thereby ensuring the smooth movement of the connecting plate 4, avoiding the fluctuation of clamping force caused by uneven rotation of the threaded rod 10, and further improving clamping stability and positioning accuracy.

[0034] An annular slide rail 12 is fixedly installed on the side of the mounting plate 3. An annular slide plate 13 is slidably connected inside the annular slide rail 12. An annular rack 14 is fixedly installed on the annular slide plate 13, and the gear 11 meshes with the annular rack 14. When the annular slide plate 13 rotates along the path of the annular slide rail 12, the annular rack 14 drives the gear 11 to rotate.

[0035] Here, when the annular slide plate 13 is rotated, it moves smoothly along the annular slide rail 12, causing the annular rack 14 to rotate synchronously. The annular rack 14 then drives the four gears 11 meshing with it to rotate synchronously, which in turn drives the four threaded rods 10 to rotate synchronously. Ultimately, this achieves the synchronous approach or departure of the four connecting plates 4 and the arc plate 5 from the placement platform 2. Compared with the traditional method of independent driving of multiple positioning components, which requires individual calibration, this synchronous drive structure ensures that the four arc plates 5 clamp the workpiece synchronously, ensuring the uniformity of force and the consistency of positioning at each clamping point. It avoids workpiece eccentricity caused by asynchronous adjustment of each positioning component, greatly improving positioning accuracy and operating efficiency, and reducing calibration time. At the same time, the annular slide rail 12 guides and limits the movement of the annular slide plate 13, ensuring the stability of the meshing between the annular rack 14 and the gears 11, avoiding problems such as tooth dislodgement during transmission, further improving the reliability of the mechanism's operation, and solving the problems of low adjustment efficiency and easy workpiece eccentricity caused by traditional independent driving of multiple positioning components.

[0036] In this invention, during equipment operation, the first step is to adapt and adjust the equipment according to the specifications of the oil reservoir to be welded. This involves replacing the mounting plate 3 by removing bolts, or unscrewing the connection between the arc-shaped plate 5 and the threaded hole 7 of the push-pull clamp 6 and replacing it with the corresponding arc-shaped plate 5. Then, the end cap is placed on the placement platform 2, and a circular tube is fitted to align the weld seam with the preset position of the welding torch on the circumferential welding machine body 1. A support is then placed inside the circular tube. Next, the operator rotates the annular slide plate 13 inside the annular slide rail 12 on the side of the mounting plate 3, causing the annular rack 14 to rotate. This rotation, through the meshing of the rack and gear 11, drives the four threaded rods 10... The rectangular groove 9 rotates synchronously, causing the threaded connecting plate 4 to move synchronously along the rectangular groove 9 to the initial position of the arc plate 5 corresponding to the circular tube; then the push-pull clamp 6 is activated, driving the arc plate 5 to extend, allowing the anti-slip pad 8 to fit against the circular tube, forming a uniform clamping force from four directions to achieve coaxial positioning; finally, the drive motor is activated to make the placement table 2 rotate with the workpiece at a uniform speed, and the circumferential welding machine body 1 starts welding synchronously. During welding, the arc plate 5 contacts the surface, and the anti-slip pad 8 and internal support components work together to ensure the stability of the workpiece. After completing one rotation, the welding torch is reset, the clamp is retracted, and the finished product is removed, thus completing one operation.

[0037] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A positioning mechanism for seam welding of an oil storage tank, comprising a circumferential welding machine body (1) and a placement table (2) for placing workpieces driven by a drive motor, characterized in that: Also includes: The mounting plate (3) is bolted to the placement platform (2). Connecting plates (4) are slidably provided at the four corners of the mounting plate (3). Arc-shaped plates (5) for pressing against the workpiece are provided on the connecting plates (4) through the drive component. A toggle mechanism is provided on the mounting plate (3) for driving the connecting plate (4) to move.

2. The oil reservoir seam welding positioning mechanism according to claim 1, characterized in that: The driving component includes a push-pull clamp (6) that is detachably mounted on the connecting plate (4). The abutting end of the push-pull clamp (6) is provided with a threaded hole (7), and the connection of the arc plate (5) is threaded into the threaded hole (7).

3. The oil reservoir seam welding positioning mechanism according to claim 2, characterized in that: A pad (8) for anti-slip is fixedly connected to the arc plate (5).

4. The oil reservoir seam welding positioning mechanism according to claim 1, characterized in that: The actuating part includes a rectangular groove (9) opened on the mounting plate (3) and corresponding to the position of the connecting plate (4). A threaded rod (10) is rotatably connected in the rectangular groove (9). The connection of the connecting plate (4) is threadedly connected to the threaded rod (10). When the threaded rod (10) rotates, the connecting plate (4) moves closer to or further away from the placement platform (2).

5. The oil reservoir seam welding positioning mechanism according to claim 4, characterized in that: A gear (11) for driving the threaded rod (10) to rotate is fixedly installed on the smooth part of the threaded rod (10).

6. The oil reservoir seam welding positioning mechanism according to claim 1, characterized in that: An annular slide rail (12) is fixedly installed on the side of the mounting plate (3). An annular slide plate (13) is slidably connected inside the annular slide rail (12). An annular rack (14) is fixedly installed on the annular slide plate (13), and the gear (11) meshes with the annular rack (14). When the annular slide plate (13) rotates along the path of the annular slide rail (12), the annular rack (14) drives the gear (11) to rotate.

Images