Heavy welding fork clamping tool with positioning function

Abstract

The utility model relates to welding fork welding technical field discloses a heavy -duty welding fork clamping tool with positioning function, this tool includes support, clamping translation mechanism, pressure mechanism and turnover mechanism, clamping translation mechanism is used for clamping the welding fork body, and can drive its translation to accurate butt joint bearing, eliminates assembly gap, pressure mechanism sets up in the welding platform that can turn over, is used for bearing stable pressure tightly, turnover mechanism can drive the welding platform together with work piece overall overturn. The utility model through the translation positioning and overall turnover function of collaborative work, effectively solved the heavy -duty workpiece of prior art misalignment, the problem that two -sided welding needs secondary clamping, improved positioning accuracy and welding quality significantly, greatly simplified the technological process, promoted production efficiency, and the degree of automation is high.

Description

Technical Field

[0001] This utility model relates to the field of welding fork technology, and in particular to a heavy-duty welding fork clamping fixture with positioning function. Background Technology

[0002] In the field of heavy machinery manufacturing, such as the production of forklifts or loaders, it is often necessary to weld the fork body to the bearing. In existing production processes, general-purpose fixtures or simple special brackets are typically used to fix these two components. However, due to the significant weight and irregular shape of the welded fork body and bearing, as well as the inherent manufacturing tolerances of the parts, relying solely on manual alignment and clamping makes it difficult to ensure precise coaxial alignment and tight fit before welding. Gaps often remain between the components, directly affecting the subsequent welding quality and the final connection strength.

[0003] Furthermore, to ensure the robustness of the structural connections, such workpieces typically require welding on both sides. Using existing technology, after welding one side, the entire heavy workpiece must be unloaded from the fixture, flipped using a crane or similar equipment, and then re-aligned, reset, and clamped before welding the other side can begin. This process is not only cumbersome, significantly increasing worker workload and reducing production efficiency, but more importantly, it easily introduces new positioning errors during the secondary clamping process, leading to a decrease in welding accuracy. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a heavy-duty welding fork clamping fixture with positioning function. It aims to improve the problems of low workpiece alignment accuracy, inability to effectively eliminate assembly gaps, and cumbersome and inefficient process caused by secondary clamping when welding heavy-duty welding forks and bearings. This utility model aims to provide a heavy-duty welding fork clamping fixture with positioning function with improved structure that can effectively solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heavy-duty welding fork clamping fixture with positioning function, comprising: a bracket, a clamping translation mechanism, a pressing mechanism and a flipping mechanism; and a welding table rotatably mounted on the bracket.

[0006] The clamping and translation mechanism is used not only to clamp the welding fork body, but also to drive the welding fork body to translate along its axial direction to abut against the bearing.

[0007] Furthermore, the clamping mechanism is combined with the welding table to clamp the bearing, and the flipping mechanism is used to drive the welding table and the clamping mechanism fixed thereon to flip together with the bearing.

[0008] Preferably, the clamping and translation mechanism includes a housing, a transmission assembly disposed within the housing, and a gripper; the transmission assembly includes a first motor, a first gear and a second gear connected to the first motor, and a first link and a second link connected between the second gear and the gripper.

[0009] Preferably, the translation function of the clamping translation mechanism is achieved by a cylinder, which is connected between the bracket and the housing to push the housing to translate.

[0010] Preferably, the clamping mechanism includes a housing, a connecting plate slidably disposed within the housing, and a guide rod connected to the connecting plate; the housing is provided with an air inlet pipe for introducing compressed air.

[0011] Preferably, the guide rod has a groove on its outer periphery, and the pressure plate is connected to the end of the guide rod away from the connecting plate; the clamping mechanism also has a fixing ball and a fixing ring, the fixing ball being partially accommodated in the groove and fixed by the fixing ring.

[0012] Preferably, the rotation of the welding table of the flipping mechanism is driven by a second motor.

[0013] Preferably, the flipping mechanism is further provided with a first fixed frame and a second fixed frame, and the two ends of the welding table are respectively rotatably connected to the first fixed frame and the second fixed frame, and the second motor is mounted on the first fixed frame.

[0014] Preferably, the central axis of the clamping and translating mechanism clamping the welding fork body is coaxial with the central axis of the pressing bearing of the pressing mechanism.

[0015] This utility model has the following beneficial effects: In this invention, by setting a clamping and translation mechanism with a cylinder, after the gripper clamps the welding fork body, it can drive the entire fixture to translate, which solves the problem in the prior art that the gap between the welding fork body and the bearing caused by the workpiece size tolerance is not able to fit tightly and thus affect the welding quality. It achieves the technical effect of precise positioning and ensuring tight contact before welding, and improves the welding reliability and product qualification rate.

[0016] This invention solves the problem in the prior art that double-sided welding of workpieces requires secondary clamping and repositioning, which leads to cumbersome operation, low production efficiency, and easy accumulation of errors. By setting up a flipping mechanism driven by a motor that can rotate the entire welding table and the workpiece, this invention achieves the technical effect of completing double-sided welding with a single clamping, significantly simplifying the process and improving production efficiency and welding accuracy. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural diagram of a heavy-duty welding fork clamping fixture with positioning function proposed in this utility model. Figure 2 This is a schematic diagram of the gripper portion of a heavy-duty welding fork clamping fixture with positioning function proposed in this utility model. Figure 3 This is a schematic diagram of the welding table portion of a heavy-duty welding fork clamping fixture with positioning function proposed in this utility model. Figure 4 This is a schematic diagram of the pressure plate part of a heavy-duty welding fork clamping fixture with positioning function proposed in this utility model.

[0018] Legend: 1. Bracket; 2. Welding fork body; 3. Bearing; 4. Clamping and translation mechanism; 401. Housing; 402. First motor; 403. First gear; 404. Second gear; 405. First connecting rod; 406. Second connecting rod; 407. Gripper; 408. Cylinder; 5. Pressing mechanism; 501. Pressure plate; 502. Air inlet pipe; 503. Outer shell; 504. Guide rod; 505. Connecting plate; 506. Fixed ball; 507. Fixed ring; 6. Tilting mechanism; 601. Second motor; 602. First fixing frame; 603. Welding table; 7. Second fixing frame. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please refer to Figures 1 to 4 This utility model provides a heavy-duty welding fork clamping fixture with positioning function, which aims to solve the problems in the prior art where it is difficult to achieve rapid and accurate alignment and tight fit of the two parts when welding heavy-duty welding forks and bearings, and the cumbersome double-sided welding operation leads to low efficiency and unstable accuracy.

[0021] like Figure 1As shown, the heavy-duty welding fork clamping fixture with positioning function includes a bracket 1, a clamping and translating mechanism 4, a pressing mechanism 5, and a flipping mechanism 6. The bracket 1 serves as the mounting base for the entire fixture, providing a stable support platform for other mechanisms. The clamping and translating mechanism 4 is located on one side of the bracket 1 and is used to clamp the welding fork body 2. After clamping, it can drive the welding fork body 2 to perform translational movement to achieve precise positioning. The flipping mechanism 6 is located on the other side of the bracket 1 and is used to support and fix the bearing 3 to be welded. After welding on one side is completed, it can drive the bearing 3 to flip as a whole to perform welding operations on the other side. The flipping mechanism 6 specifically includes a first fixing... The first fixed frame 602 and the second fixed frame 7 are both fixedly connected to the bracket 1. A welding table 603 is rotatably connected between them. The welding table 603 is used to directly support the workpiece. The clamping mechanism 5 is set on the welding table 603 to stably clamp the bearing 3 at a predetermined position on the welding table 603. With this arrangement, the welding fork body 2 fixed by the clamping and translation mechanism 4 and the bearing 3 fixed by the clamping mechanism 5 can achieve precise coaxial alignment. The translation function of the clamping and translation mechanism 4 is used to eliminate the assembly gap between the two, thus forming a solution that can work together to achieve precise positioning, firm clamping and convenient flipping.

[0022] Please refer to the following carefully. Figure 2 The clamping and translating mechanism 4 includes a housing 401, within which a transmission assembly for clamping and a cylinder 408 for translating are installed. The transmission assembly includes a first motor 402, a first gear 403, a second gear 404, a first connecting rod 405, a second connecting rod 406, and a gripper 407. The first motor 402 is fixedly connected inside the housing 401, and its output end is connected to the first gear 403. The first gear 403 meshes with the second gear 404 for transmission. The second gear 404 is fixedly connected to one end of the first connecting rod 405, and the other end of the first connecting rod 405 is rotatably connected to the first gear 406. One end of the second linkage 406 and the other end of the second linkage 406 are rotatably connected to the gripper 407. When the first motor 402 is working, it drives the linkage group to move through the gear set, and finally drives the gripper 407 to close or open, thereby completing the firm clamping of the welding fork body 2. The cylinder 408 is connected between the bracket 1 and the housing 401. Through the telescopic action, it pushes the entire housing 401 and all the fixed components inside to move linearly along the axial direction of the welding fork body 2. This translational movement eliminates the gap between the welding fork body 2 and the bearing 3, ensuring that the two can fit tightly before welding.

[0023] Please refer to the following carefully. Figure 3 and Figure 4The clamping mechanism 5 is designed to achieve vertical pressing and rotational positioning of the bearing 3. It includes a housing 503, an air inlet pipe 502, a connecting plate 505, a guide rod 504, a fixing ring 507, a fixing ball 506, and a pressure plate 501. The air inlet pipe 502 is connected to the housing 503 for introducing compressed air. The connecting plate 505 is slidably fitted into the inner cavity of the housing 503 and can move up and down under air pressure. The connecting plate 505 is fixedly connected to the guide rod 504, and a groove is formed on the outer circumferential surface of the guide rod 504. The pressure plate 501 is connected to the end of the guide rod 504 away from the connecting plate 505. The fixing ring 507 is fixed to the housing. On 503, the fixed ball 506 is limited by the fixed ring 507 and is partially accommodated in the groove of the guide rod 504. When compressed air enters the housing 503 through the air inlet pipe 502, the high-pressure gas pushes the connecting plate 505 to move downward. The connecting plate 505 drives the guide rod 504 to move downward in sync. During this process, since the position of the fixed ball 506 is fixed, its sliding cooperation with the groove on the guide rod 504 will force the guide rod 504 to rotate while descending. Finally, it drives the pressure plate 501 to achieve a compound pressing action that has both downward pressure and rotational force on the bearing 3, ensuring that the bearing 3 is stably and accurately fixed on the welding table 603.

[0024] As a preferred implementation method, please continue to refer to Figure 2 The specific transmission components of the clamping translation mechanism 4 include a first motor 402, a first gear 403, a second gear 404, a first connecting rod 405, and a second connecting rod 406. The first motor 402 is fixedly installed inside the housing 401 as a power source. The first gear 403 is connected to the output shaft of the first motor 402. The second gear 404 meshes with the first gear 403 for transmission. One end of the first connecting rod 405 is rotatably connected to the second gear 404, and the other end is rotatably connected to one end of the second connecting rod 406. The other end of the second connecting rod 406 is rotatably connected to the gripper 407. This combination of gears and connecting rods is used to efficiently convert the rotational motion of the first motor 402 into the linear clamping motion of the gripper 407. At the same time, the translation function of the clamping translation mechanism 4 is realized by a cylinder 408. The cylinder 408 is connected between the bracket 1 and the housing 401 and is used to drive the entire housing 401 and its internal clamping structure to perform reciprocating linear motion.

[0025] As another preferred implementation, please continue to refer to Figure 4In the clamping mechanism 5, the outer peripheral surface of the guide rod 504 is machined with a groove. The pressure plate 501 is connected to the end of the guide rod 504 away from the connecting plate 505 for direct contact and clamping of the bearing 3. The fixing ring 507 is fixed to the housing 503. The fixing ball 506 is partially accommodated in the groove of the guide rod 504 and is limited by the fixing ring 507. This structure forms a guide groove fit, which is used to force the guide rod 504 to rotate during the pressing process of the guide rod 504 through the interaction between the fixing ball 506 and the groove, so that the pressure plate 501 applies a compound clamping force that combines pressing and rotation to the bearing 3 to obtain a more stable fixing effect.

[0026] As another preferred embodiment, please continue to refer to Figure 3 The rotation of the welding table 603 in the flipping mechanism 6 is driven by the second motor 601, which is mounted on the first fixed frame 602. Its output shaft is connected to the welding table 603 through a coupling or gear transmission mechanism to provide the power required for flipping. The support frame of the flipping mechanism 6 is composed of the first fixed frame 602 and the second fixed frame 7. The two ends of the welding table 603 are rotatably connected between the first fixed frame 602 and the second fixed frame 7, forming a stable rotational support structure to ensure the smoothness and accuracy of the flipping process. For the specific transmission connection between the second motor 601 and the welding table 603, those skilled in the art can use various conventional methods such as gear transmission, chain transmission or belt transmission. Its specific internal structure is a well-known technology in the field and will not be described in detail here.

[0027] As a further preferred option, to ensure welding quality, this tooling is designed and assembled to ensure that the central axis of the clamping and translation mechanism 4 after clamping the welding fork body 2 is coaxial with the central axis of the pressing mechanism 5 after pressing the bearing 3. This high-precision alignment is the basis for achieving high-quality concentric welding.

[0028] Working principle: When welding is required, the bearing 3 is first placed under the clamping mechanism 5 on the welding table 603. Then, compressed air enters the housing 503 from the air inlet pipe 502. The pressure pushes the connecting plate 505 downward and drives the guide rod 504 downward as well. The fixed ball 506 fixed on the fixed ring 507 slides along the groove on the guide rod 504. This action causes the guide rod 504 to rotate as it descends, thereby driving the pressure plate 501 to firmly press and position the bearing 3 on the welding table 603. Next, the welding fork body 2 is placed between the jaws 407 of the clamping and translation mechanism 4 on the bracket 1. The first motor 402 inside the housing 401 is started. The first motor 402 drives the first gear 403 to rotate. The first gear 403 then drives the second gear 404 to rotate. The second gear 404, through the linkage of the first connecting rod 405 and the second connecting rod 406, ultimately drives the gripper 407 to close inward to clamp the welding fork body 2. If the welding fork body 2 and the bearing 3 are not in close contact at this time, the cylinder 408 is activated. The cylinder 408 pushes the entire clamping and translation mechanism 4 to translate until the welding fork body 2 and the bearing 3 are in close contact. At this time, welding on one side can begin. After welding on one side is completed, the second motor 601 of the flipping mechanism 6 is activated. The second motor 601 drives the welding table 603 connected between the first fixed frame 602 and the second fixed frame 7 to rotate as a whole, thereby flipping the workpiece over. The operator can then weld the back of the workpiece.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heavy-duty welding fork clamping fixture with positioning function, comprising a bracket (1), a clamping and translation mechanism (4) disposed on the bracket (1), a pressing mechanism (5), and a flipping mechanism (6), characterized in that, The clamping and translation mechanism (4) is used to clamp the welding fork body (2), and the clamping and translation mechanism (4) is also used to drive the welding fork body (2) to translate along its axial direction to abut against the bearing (3). The flipping mechanism (6) includes a welding table (603) rotatably mounted on the bracket (1), and the clamping mechanism (5) is mounted on the welding table (603) for clamping the bearing (3). The flipping mechanism (6) is used to drive the welding table (603) and the clamping mechanism (5) fixed thereon to flip the bearing (3).

2. The heavy-duty welding fork clamping fixture with positioning function according to claim 1, characterized in that: The clamping and translation mechanism (4) includes a housing (401), a transmission assembly disposed in the housing (401) for driving the opening and closing of the gripper (407), and the gripper (407); the transmission assembly includes a first motor (402), a first gear (403) and a second gear (404) connected to the first motor (402), and a first link (405) and a second link (406) connected between the second gear (404) and the gripper (407).

3. The heavy-duty welding fork clamping fixture with positioning function according to claim 2, characterized in that: The translation function of the clamping translation mechanism (4) is realized by a cylinder (408), which is connected between the bracket (1) and the housing (401) to push the housing (401) to translate.

4. The heavy-duty welding fork clamping fixture with positioning function according to claim 1, characterized in that: The pressing mechanism (5) includes a housing (503), a connecting plate (505) slidably disposed in the housing (503), and a guide rod (504) connected to the connecting plate (505); the housing (503) is provided with an air inlet pipe (502) for introducing compressed air.

5. A heavy-duty welding fork clamping fixture with positioning function according to claim 4, characterized in that: The guide rod (504) has a groove on its outer periphery, and the pressure plate (501) is connected to the end of the guide rod (504) away from the connecting plate (505); the pressing mechanism (5) is provided with a fixing ball (506) and a fixing ring (507), the fixing ball (506) is partially accommodated in the groove and fixed by the fixing ring (507).

6. The heavy-duty welding fork clamping fixture with positioning function according to claim 1, characterized in that: The rotation of the welding table (603) of the flipping mechanism (6) is driven by the second motor (601).

7. A heavy-duty welding fork clamping fixture with positioning function according to claim 6, characterized in that: The flipping mechanism (6) is provided with a first fixed frame (602) and a second fixed frame (7). The two ends of the welding table (603) are rotatably connected to the first fixed frame (602) and the second fixed frame (7) respectively. The second motor (601) is installed on the first fixed frame (602).

8. A heavy-duty welding fork clamping fixture with positioning function according to claim 1, characterized in that: The clamping and translation mechanism (4) clamps the central axis of the welding fork body (2) and the pressing mechanism (5) presses the central axis of the bearing (3) in a coaxial configuration.

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