A positioning welding tool for mechanical welding

Abstract

The utility model belongs to the positioning welding technical field, concretely relates to a positioning welding tool for mechanical welding, including platform, the both ends symmetry of platform top install turnover support, install the mounting support in turnover support in and close to the position department of top end, install the bearing in mounting support, the inner ring of two bearings all install end shaft, the end of two end shafts all are fixed with end plate, install first fender lock assembly between two end plates, install two side plates on the side of two end plates close to each other, and two side plates are fixed at both ends of two end plates respectively. The utility model can complete double -sided welding without unloading clamp, effectively restricts welding whole -course stress deformation, reduces work piece deformation, can be flexible and interpose the welding sequence of positive and negative face weld, promotes welding quality and product shape position consistency, saves the repeated clamping, turnover step simultaneously, shortens production cycle, reduces artificial strength, and remarkably improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of positioning welding technology, specifically relating to a positioning welding fixture for mechanical welding. Background Technology

[0002] In the industrial production field, robotic automatic welding has become a core technology widely used in the welding and processing of plate components due to its significant advantages such as stable welding quality, high product consistency and outstanding production efficiency, which has greatly promoted the automation process of conventional production. However, in scenarios involving welding large-size plate components or welding multiple workpieces together, existing tooling is unable to balance assembly accuracy with efficient double-sided welding. Currently, mainstream tooling designs can only perform single-sided welding operations after workpiece assembly and positioning, meaning that welding can only be performed on the side with the weld seam facing upwards. After the front weld seam is completed, the tooling fixture must be removed, the workpiece must be flipped manually or with the aid of equipment, and then the workpiece must be repositioned and clamped before welding of the reverse side weld seam can be carried out. The above-mentioned operating mode has many inherent defects. The welding stress generated during the front welding process will be released prematurely after the tooling is removed, resulting in initial deformation of the workpiece. When the workpiece is re-clamped and flipped, the preset path of the reverse weld will be offset due to the previous deformation, and the stress deformation during the welding process lacks effective constraints. Ultimately, the overall deformation of the welded workpiece is large, the consistency of the component's shape and position accuracy is poor, which directly affects the quality of the welded joint and the compatibility of the product assembly. At the same time, the multiple clamping, unloading and flipping operations not only prolong the production cycle and increase the intensity of manual labor, but also further reduce production efficiency due to the error caused by repeated positioning, making it difficult to meet the dual requirements of product quality and efficiency for large-scale production. Therefore, there is an urgent need for a tooling device that can complete double-sided welding after a single positioning and assembly. Utility Model Content

[0003] The purpose of this invention is to provide a positioning welding fixture for mechanical welding, which can complete double-sided welding without unloading the fixture, effectively constrain stress deformation throughout the welding process, reduce workpiece deformation, and flexibly interweave the welding sequence of positive and negative welds, thereby improving welding quality and product shape and position consistency. At the same time, it eliminates the need for repeated clamping and flipping steps, shortens the production cycle, reduces labor intensity, and significantly improves production efficiency.

[0004] The specific technical solution adopted by this utility model is as follows: A positioning welding fixture for mechanical welding includes a platform, with flip supports symmetrically installed at both ends of the top of the platform, and an installation support installed inside the flip supports and near the top. A bearing is installed inside the installation support, and an end shaft is installed on the inner ring of each of the two bearings. An end plate is fixed to one end of each of the two end shafts that are close to each other, and a first stop locking assembly is installed between the two end plates. Two side plates are installed on the side of the two end plates that are close to each other, and the two side plates are respectively fixed to the two ends of the two end plates. A second stop locking assembly is installed between the two side plates, and a clamping assembly is installed between the two side plates. Both of the flip supports are equipped with positioning components, and the positioning components are installed at the ends of the two flip supports that are far apart from each other.

[0005] The mounting bracket includes a retaining ring mounted on the top of the flip support. A flip cover is rotatably connected to the top of the retaining ring. When the flip cover is flipped, it forms a ring with the retaining ring to clamp the bearing.

[0006] The first stop locking assembly includes at least one longitudinal stop, and the longitudinal stop is mounted on one of the end plates near the other end plate, and at least one first wedge locking block is threadedly connected to the other end plate near the longitudinal stop.

[0007] The second stop locking assembly includes at least one transverse stop, and the transverse stop is mounted on one of the side plates near the other side plate, and the other side plate near the transverse stop is threadedly connected to a second wedge locking block.

[0008] The clamping assembly includes multiple bottom surface baffles, which are fixed between the two side plates. The multiple bottom surface baffles are fixed at positions near the bottom of the side plates, and multiple pressure blocks are threaded to the top of the side plates.

[0009] Each of the positioning components includes a semi-circular angle pin plate, and two semi-circular angle pin plates are installed at opposite ends of the two flip supports. The semi-circular angle pin plates are provided with a plurality of first connecting holes, and the end plates are provided with a plurality of second connecting holes. Pin bolts are inserted into the first connecting holes and the second connecting holes.

[0010] Each of the two rotating supports is fixed with a axial clamping seat at one of its far ends, and a clamping bolt is fixed to the top of the axial clamping seat. The two clamping bolts abut against each other with the two end shafts respectively.

[0011] A locking pad is installed on the side of one of the end plates near the other end plate.

[0012] The technical effects achieved by this utility model are as follows: This utility model, through a single positioning and assembly followed by overall flipping design, allows for double-sided welding without unloading the fixture. It effectively constrains stress deformation throughout the welding process, reduces workpiece deformation, and allows for flexible interleaving of the welding sequence of the positive and negative welds, improving welding quality and product shape and position consistency. At the same time, it eliminates the need for repeated clamping and flipping steps, shortens the production cycle, reduces labor intensity, and significantly improves production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the entire utility model; Figure 3 This is a side view of the entire invention. Figure 4 This is a front view of the entire utility model.

[0014] The attached diagram lists the components represented by each number as follows: 1. Flip support; 2. End shaft; 3. Flip cover; 4. Retaining ring; 5. Bearing; 6. End plate; 7. First connecting hole; 8. Longitudinal stop block; 9. First wedge locking block; 10. Side plate; 11. Second connecting hole; 12. Transverse stop block; 13. Bottom stop strip; 14. Pressure block; 15. Semi-circular angle pin plate; 16. Pin bolt; 17. Locking pad strip; 18. Shaft core clamping seat; 19. Tightening bolt; 20. Platform; 21. Second wedge locking block; 22. Workpiece. Detailed Implementation

[0015] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0016] like Figures 1-4 As shown, a positioning welding fixture for mechanical welding includes a platform 20. Two symmetrically mounted flip supports 1 are installed at the top ends of the platform 20. An installation support is installed inside the flip support 1 and near its top. A bearing 5 is installed inside the installation support. The installation support includes a retaining ring 4 mounted on the top of the flip support 1. A flip cover 3 is rotatably connected to the top of the retaining ring 4. When flipped, the flip cover 3 and the retaining ring 4 form a ring that clamps the bearing 5. (See attached diagram.) Figure 3When clamping the bearing 5, the bearing 5 is placed inside the retaining ring 4 and merged with the retaining ring 4 by the flip cover 3, so that the bearing 5 can be clamped. The inner rings of the two bearings 5 ​​are equipped with end shafts 2, and the ends of the two end shafts 2 that are close to each other are fixed with end plates 6. The first stop locking assembly is installed between the two end plates 6. The first stop locking assembly includes at least one longitudinal stop 8, and the longitudinal stop 8 is installed on one end plate 6 near the other end plate 6. The other end plate 6 is threadedly connected to at least one first wedge locking block 9 near the longitudinal stop 8. The first wedge locking block 9 is inserted downward into the gap of the workpiece 22 and adjusted by rotating the locking bolt installed on the top surface of this end plate 6 so that the wedge surface on the first wedge locking block 9 abuts against and pushes the workpiece 22, so that the assembled workpiece 22 is pressed against the longitudinal stop 8 at the other end of the longitudinal direction, thereby realizing the longitudinal positioning and locking of the entire assembled workpiece 22. Two side plates 10 are installed on the side of the two end plates 6 that are close to each other, and the two side plates 10 are respectively fixed to the two ends of the two end plates 6. A second stop locking assembly is installed between the two side plates 10, and a clamping assembly is installed between the two side plates 10. Positioning components are installed on both flip supports 1, and the positioning components are installed at the ends of the two flip supports 1 that are far apart from each other.

[0017] The second stop locking assembly includes at least one transverse stop 12, which is installed on one side plate 10 near the other side plate 10. The other side plate 10 near the transverse stop 12 is threadedly connected to a second wedge-shaped locking block 21. The second wedge-shaped locking block 21 is inserted downward into the gap on the side of the workpiece 22, and adjusted by rotating the locking bolt installed on the top surface of this side plate 10, so that the wedge surface on the second wedge-shaped locking block 21 abuts against and pushes the workpiece 22, so that the assembled workpiece 22 is pressed against the transverse stop 12 at the other end of the transverse direction, thereby achieving transverse positioning and locking of the entire assembled workpiece 22. A locking pad 17 is installed on one end plate 6 near the other end plate 6. With the setting of the locking pad 17, when the first stop locking assembly and the second stop locking assembly lock the workpiece 22, the workpiece 22 can contact the locking pad 17, thereby protecting the workpiece 22. The locking pad 17 can be made of a flexible material, such as rubber.

[0018] See attached document Figure 1 and Figure 4The clamping assembly includes multiple bottom stop strips 13, which are fixed between two side plates 10. The multiple bottom stop strips 13 are fixed at the bottom end of the side plates 10. Multiple pressure blocks 14 are threaded to the top of the side plates 10. When it is necessary to clamp the workpiece 22 on the bottom stop strips 13, the pressure blocks 14 are screwed on and moved toward the workpiece 22, and the workpiece 22 is clamped by cooperating with the bottom stop strips 13.

[0019] See attached document Figure 3 Each positioning component includes a semi-circular angle pin plate 15, and two semi-circular angle pin plates 15 are installed at opposite ends of two flip supports 1. The semi-circular angle pin plate 15 is provided with multiple first connecting holes 7, and the end plate 6 is provided with multiple second connecting holes 11. Pin bolts 16 are inserted into the first connecting holes 7 and the second connecting holes 11. After the end plate 6 is rotated to a certain angle, the first connecting holes 7 on the semi-circular angle pin plate 15 and the second connecting holes 11 on the end plate 6 are aligned with each other, and the pin bolts 16 are inserted into the first connecting holes 7 and the second connecting holes 11, thereby locking the end plate 6 and the workpiece 22. An electric push rod can be installed on the flip support 1, so that the electric push rod can be automatically or manually inserted into the first connecting holes 7 and the second connecting holes 11, reducing the degree of manual labor.

[0020] Two rotating supports 1 are each fixed with a shaft clamping seat 18 at their far ends, and a clamping bolt 19 is fixed on the top of the shaft clamping seat 18. The two clamping bolts 19 abut against the two end shafts 2 respectively. By setting the clamping bolts 19, the end plate 6 can be rotated. A motor can be installed on the rotating support 1, and the end plate 6 can be rotated by the motor, so that the 19 clamps the end shaft 2 to keep the shaft stable. The principle is as follows: Place the workpiece 22 on the bottom baffle 13, so that one side of it is in contact with the longitudinal baffle 8 and the transverse baffle 12. Tighten the pressure block 14 to clamp the workpiece 22 in conjunction with the bottom baffle 13. Tighten the locking bolt of the first wedge-shaped locking block 9 to push the workpiece 22 against the longitudinal stop block 8; similarly operate the second wedge-shaped locking block 21 to complete the transverse locking. Tighten the tightening bolt 19 on the shaft clamping seat 18 to tighten it against the end shaft 2 and ensure the shaft is stable; First, weld the weld seam facing upwards on the workpiece 22; when welding the reverse side is required, pull out the pin bolt 16, rotate the end plate 6 to rotate the workpiece 22 to the target angle, and then insert the pin bolt 16 into the corresponding first connecting hole 7 and second connecting hole 11 to lock it, and then perform reverse welding. After welding is completed, release the pressure block 14, the first wedge-shaped locking block 9, the second wedge-shaped locking block 21 and the tightening bolt 19 in sequence, and take out the workpiece 22.

[0021] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A positioning welding fixture for mechanical welding, comprising a platform (20), characterized in that: The platform (20) has symmetrical flip supports (1) installed at both ends of the top. An installation support is installed inside the flip support (1) and near the top. A bearing (5) is installed inside the installation support. An end shaft (2) is installed on the inner ring of each of the two bearings (5). An end plate (6) is fixed at one end of each end shaft (2) that is close to each other. A first stop locking assembly is installed between the two end plates (6). Two side plates (10) are installed on the side of the two end plates (6) that are close to each other, and the two side plates (10) are respectively fixed at both ends of the two end plates (6). A second stop locking assembly is installed between the two side plates (10), and a clamping assembly is installed between the two side plates (10). Positioning components are installed on both of the flip supports (1), and the positioning components are installed at the ends of the two flip supports (1) that are far apart from each other.

2. The positioning welding fixture for mechanical welding according to claim 1, characterized in that: The mounting bracket includes a retaining ring (4) mounted on the top of the flip support (1). A flip cover (3) is rotatably connected to the top of the retaining ring (4). After the flip cover (3) is flipped, it forms a ring with the retaining ring (4) to clamp the bearing (5).

3. The positioning welding fixture for mechanical welding according to claim 1, characterized in that: The first stop locking assembly includes at least one longitudinal stop (8), and the longitudinal stop (8) is mounted on one of the end plates (6) near the other end plate (6), and the other end plate (6) near the longitudinal stop (8) is threadedly connected to at least one first wedge locking block (9).

4. A positioning welding fixture for mechanical welding according to claim 1, characterized in that: The second stop locking assembly includes at least one transverse stop (12), and the transverse stop (12) is mounted on one of the side plates (10) near the other side plate (10), and the other side plate (10) near the transverse stop (12) is threadedly connected to a second wedge locking block (21).

5. A positioning welding fixture for mechanical welding according to claim 1, characterized in that: The clamping assembly includes multiple bottom baffles (13), and the multiple bottom baffles (13) are fixed between the two side plates (10). The multiple bottom baffles (13) are fixed at the position of the side plate (10) near the bottom end, and the top of the side plate (10) is threaded with multiple pressure blocks (14).

6. A positioning welding fixture for mechanical welding according to claim 1, characterized in that: Each of the positioning components includes a semi-circular angle pin plate (15), and the two semi-circular angle pin plates (15) are installed at the ends of the two flip supports (1) that are far apart from each other. The semi-circular angle pin plate (15) is provided with a plurality of first connecting holes (7), and the end plate (6) is provided with a plurality of second connecting holes (11). The first connecting holes (7) and the second connecting holes (11) are fitted with pin bolts (16).

7. A positioning welding fixture for mechanical welding according to claim 1, characterized in that: The two rotating supports (1) are each fixed with a shaft clamping seat (18) at one end away from each other, and the top of the shaft clamping seat (18) is fixed with a clamping bolt (19), and the two clamping bolts (19) respectively abut against the two end shafts (2).

8. A positioning welding fixture for mechanical welding according to claim 1, characterized in that: One of the end plates (6) is fitted with a locking pad strip (17) on the side of the end plate (6) close to the other end plate (6).

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