Positioning device for rack welding of a vibration friction welding machine

Abstract

The application provides a positioning device for rack welding of a vibration friction welding machine, and belongs to the technical field of vibration friction welding machines.The device comprises a support frame, a U-shaped frame clamping mechanism and a positioning assembly; the support frame is uniformly provided with freely rotatable auxiliary rollers in the length direction; the U-shaped frame clamping mechanism is used for clamping the U-shaped frame and driving the U-shaped frame to move in the width direction of the support frame; the positioning assembly is used for clamping and fixing the base in the length direction of the support frame and synchronously positioning the U-shaped frame during movement; the U-shaped frame clamping mechanism comprises a bottom plate and side plates, a plurality of groups of bottom support plates are arranged in the bottom plate, support rollers are rotatably arranged on the bottom support plates, the shaft line directions of the support rollers of adjacent two groups of bottom support plates are perpendicular to each other, and the adjacent two groups of bottom support plates are configured to be alternately lifted in the bottom plate.The application specifically provides a positioning device for rack welding of a vibration friction welding machine, which can synchronously realize alignment and positioning of the base plate and the U-shaped frame.

Description

Technical Field

[0001] This invention belongs to the field of vibration friction welding machine technology, specifically referring to a positioning device for welding the frame of a vibration friction welding machine. Background Technology

[0002] As an important welding equipment in high-end manufacturing, the structural stability and welding precision of the frame of a vibration friction welding machine directly determine the machine's performance, service life, and the quality of the welded workpieces. The base and U-shaped frame are the core components of the vibration friction welding machine frame, and their welding positioning accuracy and efficiency are key factors restricting the quality and efficiency of frame production.

[0003] In the actual production process of the vibration friction welding machine frame, the frame welding needs to realize the corresponding assembly welding of two sets of bases and two sets of U-shaped frames. Specifically, the two ends of one set of U-shaped frames are respectively positioned and welded to the same end of the two sets of bases, and the two ends of the other set of U-shaped frames are respectively positioned and welded to the other end of the two sets of bases, so as to ensure the symmetry and load-bearing stability of the overall frame structure.

[0004] In existing technologies, the welding positioning of vibration friction welding machine frames commonly employs a step-by-step positioning method. This involves first positioning and fixing two sets of bases using simple tooling, then aligning and adjusting the two sets of U-shaped frames according to the positions of the positioned bases, and finally fixing and welding them after the U-shaped frames are aligned with the bases. This positioning method is not only cumbersome and redundant, but also significantly reduces the overall efficiency of frame welding positioning, making it unsuitable for the needs of large-scale production. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the purpose of the present invention is to provide a positioning device for welding the frame of a vibration friction welding machine, so as to at least partially solve the problems mentioned in the background art.

[0006] The technical solution adopted by this invention is as follows: This invention proposes a positioning device for welding the frame of a vibration friction welding machine, comprising: A support frame has multiple freely rotatable auxiliary rollers spaced apart along its length. These auxiliary rollers support the base and allow it to move along its length. U-shaped frame clamping mechanism is used to clamp the U-shaped frame and drive it to move along the width direction of the support frame; The positioning component is used to clamp the fixed base along the length of the support frame and to position the U-shaped frame synchronously during movement; The U-shaped frame clamping mechanism includes a base plate and side plates. Two sets of side plates are symmetrically arranged on both sides of the base plate, and the distance between the two sets of side plates is adjustable. Multiple sets of bottom support plates are provided inside the base plate. Support rollers are rotatably provided on the bottom support plates. The axis directions of the support rollers of two adjacent sets of bottom support plates are perpendicular to each other, and the two adjacent sets of bottom support plates are configured to alternately rise and fall inside the base plate.

[0007] Furthermore, the base plate is rotatably provided with multiple sets of lifting shafts, and the bottom support plate is arranged in a one-to-one correspondence with the lifting shaft. The lifting shaft is provided with a lifting component, and the bottom support plate is fixedly connected to the lifting component. Adjacent sets of bottom support plates are driven to rise and fall alternately by the lifting component.

[0008] Furthermore, the base plate is provided with a partition, the lifting assembly includes a lifting plate and a lifting disk, the lifting disk is fixedly mounted on the lifting shaft, the lifting disk is eccentrically mounted with a drive column, the lifting plate is slidably mounted on the partition, the bottom support plate is mounted on the lifting plate and located above the partition, the lower end of the lifting plate is provided with a drive plate, the drive plate is provided with a drive groove, and the drive column is engaged and slidably mounted in the drive groove; the installation phase of the drive columns of two adjacent sets of the lifting assembly on the lifting disk is 180° out of phase.

[0009] Furthermore, the lifting assembly is symmetrically provided with two sets at both ends of the lifting shaft, and the bottom support plate of each set is connected to the lifting plate of the two sets of lifting assemblies; Furthermore, a lifting motor is provided inside the base plate, and the lifting shaft adjacent to the lifting motor is connected to the output shaft of the lifting motor via belt drive. Two adjacent sets of lifting shafts are connected via belt drive.

[0010] Furthermore, a rotating guide roller is rotatably provided on the inner side of the side plate; the lower end of the rotating guide roller is higher than the upper surface of the support roller.

[0011] Furthermore, the base plate is provided with a spacing adjustment mechanism; the spacing adjustment mechanism includes a spacing adjustment motor, a spacing adjustment screw, and a spacing adjustment slide rod. The spacing adjustment motor is located on the base plate, the spacing adjustment screw is rotatably mounted on the inner wall of the base plate, and one end is connected to the output shaft of the spacing adjustment motor. The spacing adjustment slide rod is located on the inner wall of the base plate and is arranged parallel to the spacing adjustment screw. The spacing adjustment screw is a bidirectional screw, and the two sets of side plates are connected to both ends of the spacing adjustment screw by threads and are slidably mounted on both ends of the spacing adjustment slide rod.

[0012] Furthermore, the positioning components are provided in two sets corresponding to the base. The spacing between the two sets of positioning components along the length of the support frame is adjustable. Each set of positioning components includes an outer positioning plate and an inner positioning plate. The spacing between the outer positioning plate and the inner positioning plate along the length of the support frame is adjustable.

[0013] Furthermore, the lengths of both the outer and inner positioning plates are less than the length of the base; the outer positioning plates are provided with auxiliary push plates on both sides along the height direction.

[0014] Furthermore, the support frame is provided with two sets of lead screw and slide bar guiding drive mechanisms, which are respectively a first drive mechanism and a second drive mechanism. The first drive mechanism and the second drive mechanism are staggered vertically within the support frame. The U-shaped frame clamping mechanism is located on the first drive mechanism, and the positioning component is located on the second drive mechanism.

[0015] Furthermore, the lead screw and slide bar guiding drive mechanism includes a drive motor, a drive lead screw, and a guide slide bar. The drive motor is mounted on the support frame, the drive lead screw is rotatably mounted on the support frame, the drive lead screw is connected to the output shaft of the drive motor, and the guide slide bar is mounted on the support frame and parallel to the drive lead screw.

[0016] Furthermore, the drive screw of the first drive mechanism has threaded sections with opposite thread directions at both ends. Each of the two sets of threaded sections is connected to a set of threaded seats by threads. The threaded seats are slidably mounted on the guide slide of the first drive mechanism. The threaded seats are equipped with lifting cylinders. The U-shaped frame clamping mechanism is located at the free end of the lifting cylinder.

[0017] Furthermore, the drive screw of the second drive mechanism is provided with threaded groups with opposite thread directions at both ends. The two sets of positioning components are respectively connected to the two sets of threaded groups by threads. Each set of threaded groups includes two threaded segments with opposite thread directions. The outer positioning plate and the inner positioning plate are respectively threadedly connected to the two threaded segments of the threaded group and slidably mounted on the guide slide rod.

[0018] Furthermore, the inner positioning plate is provided with an adjustable positioning plate, the position of which on the inner positioning plate can be adjusted along the length of the support frame.

[0019] Furthermore, a set of positioning grooves is provided on both outer side walls of the support frame that are symmetrically arranged along its length. A reference positioning component is provided in the positioning groove. The reference positioning component includes a reference positioning screw and a reference positioning plate. The reference positioning screw is rotatably disposed in the positioning groove. One end of the reference positioning screw extends through one side of the positioning groove to the outside of the support frame, and a handwheel is provided at this end. The reference positioning plate is connected to the reference positioning screw by threads and is engaged and slidably disposed in the positioning groove. The reference positioning plate positions one end of the base.

[0020] The technical solution provided by this invention has the following beneficial effects: (1) The positioning component clamps the fixed base along the length of the support frame, and simultaneously positions the U-shaped frame during the movement of the positioning component. This ensures that the U-shaped frame and the two sets of bases are accurately aligned, effectively avoiding the cumulative error caused by traditional step-by-step positioning, providing a guarantee for the welding quality of the frame, and thus improving the structural stability of the vibration friction welding machine frame.

[0021] (2) The base plate of the U-shaped frame clamping mechanism is provided with multiple sets of bottom support plates. The support roller axes of adjacent bottom support plates are perpendicular to each other and can be raised and lowered alternately. The appropriate support roller can be switched according to the adjustment direction of the U-shaped frame, which plays a stable support and guiding role for the U-shaped frame, avoids tilting, jamming or surface scratches during the adjustment of the U-shaped frame, ensures smooth position adjustment, and thus improves the overall welding positioning efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a positioning device for welding the frame of a vibration friction welding machine according to an embodiment of the present invention; Figure 2 This is a top view of a positioning device for welding the frame of a vibration friction welding machine, as proposed in an embodiment of the present invention. Figure 3 This is a three-dimensional cross-sectional view of a positioning device for welding the frame of a vibration friction welding machine, as proposed in an embodiment of the present invention. Figure 4 This is a front view schematic diagram of the U-shaped frame clamping mechanism of a positioning device for welding the frame of a vibration friction welding machine according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the bottom structure of a positioning device for welding the frame of a vibration friction welding machine according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the welding positioning structure of the base plate and the U-shaped frame of a positioning device for welding the frame of a vibration friction welding machine according to an embodiment of the present invention.

[0023] The components are as follows: 1. Support frame; 2. Auxiliary roller; 3. U-shaped frame clamping mechanism; 4. Positioning component; 5. Base plate; 6. Side plate; 7. Bottom support plate; 8. Support roller; 9. Partition plate; 10. Lifting plate; 11. Lifting plate; 12. Drive column; 13. Drive plate; 14. Drive groove; 15. Lifting motor; 16. Belt; 17. Rotating guide roller; 18. Spacing adjustment motor; 19. Spacing adjustment screw; 20. Spacing adjustment slide bar; 21. Outer positioning plate; 22. Inner positioning plate; 23. Auxiliary push plate; 24. Drive motor; 25. Drive screw; 26. Guide slide bar; 27. Threaded seat; 28. Lifting cylinder; 29. ​​Adjustable positioning plate; 30. Positioning groove; 31. Reference positioning screw; 32. Reference positioning plate; 33. Handwheel; 34. Base; 35. U-shaped frame.

[0024] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0025] The technical solutions in 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, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0026] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0027] See Figure 1 , Figure 2 , Figure 4 and Figure 5 In this embodiment, the present invention provides a positioning device for welding the frame of a vibration friction welding machine, including a support frame 1, a U-shaped frame clamping mechanism 3, and a positioning component 4; a plurality of freely rotatable auxiliary rollers 2 are distributed at intervals along the length direction on the support frame 1, the auxiliary rollers 2 are used to support the base 34 and allow it to move along the length direction, the length and width directions are described above. Figure 2The U-shaped frame clamping mechanism 3 is used to clamp the U-shaped frame 35 and drive it to move along the width direction of the support frame 1, so as to realize the alignment of the two sets of U-shaped frames 35 with the two ends of the base 34; the positioning component 4 is used to clamp and fix the base 34 along the length direction of the support frame 1, and simultaneously position the U-shaped frame 35 during the movement to ensure that the U-shaped frame 35 is accurately aligned with the two sets of bases 34; the U-shaped frame clamping mechanism 3 includes a base plate 5 and side plates 6. Two sets of side plates 6 are symmetrically arranged on both sides of the base plate 5. The distance between the two sets of side plates 6 is adjustable and used to clamp the U-shaped frame 35 from both sides to adapt to U-shaped frames 35 of different sizes; multiple sets of bottom support plates 7 are provided in the base plate 5. Support rollers 8 are rotatably arranged on the bottom support plates 7. The support rollers 8 of the bottom support plate 7 are perpendicular to each other, and the two adjacent bottom support plates 7 are configured to alternately rise and fall within the base plate 5 so that the axis of the support rollers 8 on them is adapted to the position adjustment direction of the U-shaped frame 35. When the two side plates 6 clamp the U-shaped frame 35 along the width direction of the support frame 1, the support rollers 8 whose axis is parallel to the length direction of the support frame 1 contact the lower surface of the U-shaped frame 35 to support and guide it. When the U-shaped frame 35 moves synchronously along the length direction of the support frame 1 with the positioning component 4 and the base 34, the support rollers 8 whose axis is parallel to the width direction of the support frame 1 contact the lower surface of the U-shaped frame 35 to support and guide it, ensuring the smooth movement of the U-shaped frame 35 in different adjustment directions.

[0028] See Figure 4 and Figure 5 In this embodiment, multiple sets of lifting shafts are rotatably provided inside the base plate 5, and the bottom support plate 7 is arranged in a one-to-one correspondence with the lifting shafts. Lifting components are provided on the lifting shafts, and the bottom support plate 7 is fixedly connected to the lifting components. Two adjacent sets of bottom support plates 7 are driven by the lifting components to rise and fall alternately.

[0029] See Figure 4 and Figure 5In this embodiment, a partition 9 is provided inside the base plate 5. The lifting assembly includes a lifting disc 10 and a lifting plate 11. The lifting disc 10 is fixedly mounted on the lifting shaft. A drive column 12 is eccentrically mounted on the lifting disc 10. The lifting plate 11 is slidably mounted on the partition 9. The limiting effect of the partition 9 ensures that the lifting plate 11 can be stably raised and lowered in the vertical direction. The bottom support plate 7 is mounted on the lifting plate 11 and is located above the partition 9. A drive plate 13 is provided at the lower end of the lifting plate 11. A drive groove 14 is opened on the drive plate 13. The drive column 12 is engaged and slidably mounted in the drive groove 14. When the lifting shaft is driven to rotate, the lifting shaft drives the lifting disc 10 to rotate synchronously. The rotating lifting disc 10 drives the eccentrically mounted drive column 12 to perform a circular motion. The drive column 12 slides in the drive groove 14 and pushes the drive plate 13 to move up and down, thereby driving the lifting disc 10 to move in a circular motion. The movable lifting plate 11 moves up and down along the partition 9, ultimately achieving the lifting and lowering of the bottom support plate 7. The installation phases of the drive columns 12 of the two adjacent lifting components on the lifting plate 10 are 180° apart, so as to achieve the alternating lifting and lowering of the two adjacent bottom support plates 7. That is, when the drive column 12 of one lifting component rotates with the lifting plate 10 to the lowest end of the lifting plate 10, the drive column 12 of the other adjacent lifting component rotates with the lifting plate 10 to the highest end of the lifting plate 10, which can achieve the alternating lifting and lowering of the two adjacent bottom support plates 7, ensuring the continuity and stability of the U-shaped frame 35 support during the positioning process. Two sets of lifting components are symmetrically arranged at both ends of the lifting shaft. Each set of bottom support plates 7 is connected to the lifting plate 11 of the two sets of lifting components. The two sets of lifting components jointly drive the bottom support plate 7 to lift and lower, ensuring the stability of the lifting and lowering drive of the bottom support plate 7. See Figure 4 In this embodiment, a lifting motor 15 is provided inside the base plate 5. The lifting shaft adjacent to the lifting motor 15 is connected to the output shaft of the lifting motor 15 via a belt 16. Two adjacent sets of lifting shafts are also connected via a belt 16. When the lifting motor 15 is started, the lifting motor 15 drives the lifting shaft connected to it to rotate via the belt 16. The lifting shafts rotate synchronously via the belt 16, thereby driving all the bottom support plates 7 to rise and fall alternately according to a preset pattern. When the support rollers 8 on the bottom support plates 7 in different axial directions come into contact with the U-shaped frame 35, they can respectively adapt to the movement requirements of the U-shaped frame 35 in different directions, better ensuring the stability of the positioning adjustment of the U-shaped frame 35.

[0030] See Figure 3 and Figure 4In this embodiment, a rotating guide roller 17 is rotatably provided on the inner side of the side plate 6, which is used to roll into contact with its side wall when clamping the U-shaped frame 35. The setting of the rotating guide roller 17, together with the support roller 8 parallel to the width direction of the support frame 1, ensures the smoothness of the position adjustment of the U-shaped frame 35 along the length direction of the support frame 1. The lower end of the rotating guide roller 17 is higher than the upper surface of the support roller 8 to avoid interference between the rotating guide roller 17 and the support roller 8, while ensuring that the two sets of side plates 6 can move smoothly above the bottom plate 5.

[0031] See Figure 5 In this embodiment, the base plate 5 is provided with a spacing adjustment mechanism for adjusting the spacing between the two sets of side plates 6 to accommodate U-shaped frames 35 of different widths. The spacing adjustment mechanism includes a spacing adjustment motor 18, a spacing adjustment screw 19, and a spacing adjustment slide 20. The spacing adjustment motor 18 is mounted on the base plate 5. The spacing adjustment screw 19 is rotatably mounted on the inner wall of the base plate 5, and one end is connected to the output shaft of the spacing adjustment motor 18. The spacing adjustment slide 20 is mounted on the inner wall of the base plate 5 and is parallel to the spacing adjustment screw 19. The spacing adjustment screw 19 is a bidirectional screw. The two sets of side plates 6 are connected to the two ends of the spacing adjustment screw 19 by threads and are slidably mounted on the two ends of the spacing adjustment slide 20. When the spacing adjustment motor 18 is started, the spacing is adjusted... The motor 18 drives the spacing adjustment screw 19 to rotate. Under the driving action of the spacing adjustment screw 19 and the guiding and limiting action of the spacing adjustment slide 20, the two sets of side plates 6 move synchronously in opposite directions along the spacing adjustment slide 20, approaching the U-shaped frame 35 from both sides, and contacting the side wall of the U-shaped frame 35 through the rotating guide roller 17, clamping and positioning the U-shaped frame 35. During the clamping and positioning of the U-shaped frame 35 by the two sets of side plates 6, the support roller 8, whose axis is parallel to the length direction of the support frame 1, is in a high position and contacts the lower surface of the U-shaped frame 35, providing stable support for the U-shaped frame 35. During the clamping and fixing of the U-shaped frame 35 by the two sets of side plates 6, the movement of the U-shaped frame 35 is guided, ensuring the accuracy of the clamping position of the U-shaped frame 35.

[0032] See Figure 3 In this embodiment, two sets of positioning components 4 are provided corresponding to the base 34. The two sets of positioning components 4 clamp and fix the two sets of base 34 respectively. The spacing between the two sets of positioning components 4 along the length of the support frame 1 is adjustable so that the position of the two sets of positioning components 4 corresponds to the preset spacing between the two sets of base 34. Each set of positioning components 4 includes an outer positioning plate 21 and an inner positioning plate 22. The spacing between the outer positioning plate 21 and the inner positioning plate 22 along the length of the support frame 1 is adjustable. The outer positioning plate 21 and the inner positioning plate 22 clamp and position the base 34 from the outside and the inside of the base 34 respectively. The outer positioning plate 21 simultaneously positions the base 34 and the U-shaped frame 35 from the outside to ensure that the sides of the U-shaped frame 35 and the base 34 are flush and to ensure welding alignment accuracy.

[0033] See Figures 1-3 In this embodiment, the lengths of the outer positioning plate 21 and the inner positioning plate 22 are both less than the length of the base 34, so that both ends of the base 34 can extend to the outside of the positioning plate, avoiding the welding position of the base 34 and the U-shaped frame 35 being blocked, and ensuring that the welding operation can be carried out smoothly; the outer positioning plate 21 is provided with auxiliary push plates 23 on both sides along the height direction. The position of the auxiliary push plates 23 is adapted to the positioning position of the base 34 and the two sets of U-shaped frames 35, and can push the base 34 and the U-shaped frame 35 synchronously to achieve synchronous positioning and alignment of the two.

[0034] See Figure 1 and Figure 2 In this embodiment, the support frame 1 is provided with two sets of lead screw and slide bar guiding drive mechanisms, which are respectively the first drive mechanism and the second drive mechanism. The first drive mechanism and the second drive mechanism are staggered vertically within the support frame 1 to avoid mutual interference during operation. The U-shaped frame clamping mechanism 3 is provided on the first drive mechanism, and the positioning component 4 is provided on the second drive mechanism. The distance between the two sets of U-shaped frame clamping mechanisms 3 is adjusted by the first drive mechanism so that the distance between the two sets of U-shaped frame clamping mechanisms 3 is adapted to the length of the base 34, ensuring that the two sets of U-shaped frames 35 can be positioned at the corresponding positions at both ends of the base 34. The distance between the two sets of positioning components 4 is adjusted by the second drive mechanism to adjust the distance between the two sets of bases 34.

[0035] See Figure 1 and Figure 2 In this embodiment, the lead screw and slide guide drive mechanism includes a drive motor 24, a drive lead screw 25, and a guide slide 26. The drive motor 24 is mounted on the support frame 1, the drive lead screw 25 is rotatably mounted on the support frame 1, the drive lead screw 25 is connected to the output shaft of the drive motor 24, and the guide slide 26 is mounted on the support frame 1 and is parallel to the drive lead screw 25.

[0036] See Figure 3In this embodiment, the drive screw 25 of the first drive mechanism has threaded sections with opposite thread directions at both ends. A set of threaded seats 27 are connected to each of the two sets of threaded sections by threads. The threaded seats 27 are slidably mounted on the guide slide rod 26 of the first drive mechanism. A lifting cylinder 28 is mounted on the threaded seat 27, and a U-shaped frame clamping mechanism 3 is located at the free end of the lifting cylinder 28. When the drive motor 24 of the first drive mechanism is started, the drive motor 24 drives the drive screw 25 to rotate. Under the driving action of the drive screw 25 and the guiding and limiting action of the guide slide rod 26, the two sets of threaded seats 27 move synchronously in opposite directions. The two sets of U-shaped frame clamping mechanisms 3 move synchronously in opposite directions, adjusting the distance between the two sets of U-shaped frame clamping mechanisms 3, that is, adjusting the distance between the two sets of U-shaped frames 35, so that the two sets of U-shaped frames 35 move to the welding position corresponding to the base 34; through the setting of the lifting cylinder 28, after the relative position of the base 34 and the U-shaped frame 35 is adjusted, the free end of the lifting cylinder 28 retracts, driving the U-shaped frame clamping mechanism 3 and the clamped U-shaped frame 35 to fall as a whole, so that the lower surface of the U-shaped frame 35 is in close contact with the upper surface of the base 34, completing the pre-welding alignment and positioning of the base 34 and the U-shaped frame 35.

[0037] See Figure 2 and Figure 3 In this embodiment, the drive screw 25 of the second drive mechanism has threaded sections with opposite thread directions at both ends. Two sets of positioning components 4 are respectively connected to the two sets of threaded sections via threads. Each set of threaded sections includes two threaded segments with opposite thread directions. The outer positioning plate 21 and the inner positioning plate 22 are respectively threadedly connected to the two threaded segments of the threaded sections and slidably mounted on the guide slide rod 26. When the drive motor 24 of the second drive mechanism is activated, the drive motor 24 drives the drive screw 25 to rotate. Under the driving action of the drive screw 25 and the guiding and limiting action of the guide slide rod 26, the two sets of threaded sections move synchronously in opposite directions. The threaded segments with opposite thread directions on each set of threaded sections drive the corresponding outer positioning plate 21 and inner positioning plate 22. 2. The base 34 is clamped and fixed from both sides of the base 34 to achieve positioning of the base 34. While the outer positioning plate 21 positions the base 34, the auxiliary push plate 23 on the outer positioning plate 21 will simultaneously contact and push the end of the U-shaped frame 35, causing the U-shaped frame 35 and its clamping mechanism to be finely adjusted along the length direction of the support frame 1 together with the base 34, so that the end of the U-shaped frame 35 is precisely flush with the side of the base 34, achieving synchronous and accurate positioning of the two sets of bases 34 and the two sets of U-shaped frames 35, reducing the cumulative positioning error. When the auxiliary push plate 23 pushes the U-shaped frame 35 to move, the support roller 8, whose axis is parallel to the width direction of the support frame 1, is in a high position and contacts the lower surface of the U-shaped frame 35.

[0038] See Figure 2 and Figure 3In this embodiment, an adjustable positioning plate 29 is provided on the inner positioning plate 22. The position of the adjustable positioning plate 29 on the inner positioning plate 22 can be adjusted along the length of the support frame 1. Since the models of vibration friction welding machines are different, their frame sizes are also different, resulting in differences in the distance between the two sets of bases 34. If the adjustable positioning plate 29 is missing on the inner positioning plate 22, the clamping position of the two sets of positioning components 4 is a fixed value, which cannot meet the clamping and positioning requirements of the two sets of bases 34 with different distances. However, by setting the adjustable positioning plate 29 with an adjustable position, the centerline position between the adjustable positioning plate 29 and the outer positioning plate 21 can be adjusted, thereby adapting to the clamping and positioning of the two sets of bases 34 with different distances and expanding the applicability of the device.

[0039] Specifically, the position adjustment of the adjustable positioning plate 29 can be achieved through the following structure: a position adjustment screw is threadedly connected to the inner positioning plate 22, and a guide rod is slidably provided on the inner positioning plate 22. The guide rod is arranged parallel to the position adjustment screw, the adjustable positioning plate 29 is fixedly connected to the guide rod, and one end of the position adjustment screw is rotatably connected to the adjustable positioning plate 29. Under the guiding and limiting action of the guide rod, rotating the position adjustment screw can drive the adjustable positioning plate 29 to move along the guide rod, thereby achieving precise adjustment of the distance between the adjustable positioning plate 29 and the outer positioning plate 21. The operation is convenient and the adjustment accuracy is high.

[0040] See Figure 1 In this embodiment, a set of positioning grooves 30 are provided on the two outer side walls of the support frame 1, which are symmetrically arranged along the length. A reference positioning component 4 is provided in the positioning groove 30 to locate the initial placement position of the base 34 and improve the accuracy of the placement of the base 34. The reference positioning component 4 includes a reference positioning screw 31 and a reference positioning plate 32. The reference positioning screw 31 is rotatably disposed in the positioning groove 30. One end of the reference positioning screw 31 extends through one side of the positioning groove 30 to the outside of the support frame 1, and a handwheel 33 is provided at this end. The reference positioning plate 32 is connected to the reference positioning screw 31 by threads and is engaged and slidably disposed in the positioning groove 30. The reference positioning plate 32 positions one end of the base 34. Before placing the base 34, the operator can adjust the position of the reference positioning plate 32 by rotating the handwheel 33 so that the position of the reference positioning plate 32 corresponds to the preset initial position of the base 34, which facilitates the rapid positioning of the base 34 by the subsequent positioning component 4. As a specific embodiment, a scale line can be set on the top of the side wall of the support frame 1, and the specific adjustment position of the reference positioning plate 32 can be easily determined by the scale line.

[0041] The specific working steps of this embodiment are as follows: 1. First, adjust the position of the adjustable positioning plate 29 according to the required spacing between the two sets of bases 34. The adjustment principle is as follows: if the spacing between the two bases 34 is large, adjust the adjustable positioning plate 29 towards the outer positioning plate 21 so that the center line position (i.e., the clamping position) between the adjustable positioning plate 29 and the outer positioning plate 21 is close to the outer positioning plate 21; if the spacing between the two bases 34 is small, adjust the adjustable positioning plate 29 away from the outer positioning plate 21 so that the center line position (i.e., the clamping position) between the adjustable positioning plate 29 and the outer positioning plate 21 is close to the inner positioning plate 22, thereby realizing the adjustment of the specific clamping position of the two sets of bases 34. 2. Then rotate the handwheel 33 to adjust the position of the reference positioning plate 32 in the reference positioning assembly 4 so that the position of the reference positioning plate 32 corresponds to one end of the base 34 at the preset position; then place the two sets of bases 34 on the auxiliary rollers 2 of the support frame 1 respectively, so that one end of each set of bases 34 abuts against the corresponding reference positioning plate 32, thus completing the initial placement and positioning of the base 34. 3. Start the drive motor 24 of the first drive mechanism. The drive motor 24 drives the drive screw 25 to rotate. The two sets of threaded seats 27 move synchronously in opposite directions, which drives the two sets of U-shaped frame clamping mechanisms 3 to move synchronously in opposite directions. Adjust the distance between the two sets of U-shaped frame clamping mechanisms 3 so that the distance between the diameters of the two sets of U-shaped frames 35 corresponds to the welding position of the two sets of bases 34. 4. The two sets of U-shaped frames 35 are respectively suspended between the two sets of side plates 6 of the two sets of U-shaped frame clamping mechanisms 3. At this time, the bottom support plate 7 with the support roller 8 whose axis is parallel to the length direction of the support frame 1 is in a high position. The support roller 8 contacts the lower end face of the U-shaped frame 35 to provide stable support for the U-shaped frame 35. Start the spacing adjustment motor 18, and the two sets of side plates 6 move synchronously in opposite directions along the spacing adjustment slide bar 20, approaching the U-shaped frame 35 from both sides. By rotating the guide roller 17, they contact and clamp the side wall of the U-shaped frame 35, completing the clamping and fixing of the U-shaped frame 35. During the clamping and fixing process, the support roller 8 reduces the friction between the U-shaped frame 35 and the support roller 8 by rotating, ensuring the smoothness of the clamping and fixing action of the two sets of side plates 6, and at the same time avoiding scratches on the surface of the U-shaped frame 35. 5. After installing the U-shaped frame 35 between the two sets of side plates 6, start the lifting motor 15. The lifting motor 15 drives all the lifting shafts to rotate synchronously through the belt 16. The drive columns 12 of the two adjacent sets of lifting components are 180° out of phase, which drives the two adjacent sets of bottom support plates 7 to rise and fall alternately. This causes the bottom support plate 7 with the support roller 8 whose axis is parallel to the width direction of the support frame 1 to rise to contact the lower surface of the U-shaped frame 35. At the same time, the bottom support plate 7 with the support roller 8 whose axis is parallel to the length direction of the support frame 1 descends and disengages from the lower surface of the U-shaped frame 35, thus completing the switching of the support roller 8 and adapting to the movement requirements of the U-shaped frame 35 along the length direction of the support frame 1. 6. Start the drive motor 24 of the second drive mechanism. The drive motor 24 drives the drive screw 25 to rotate. The two sets of threaded groups move synchronously in opposite directions. Each set of threaded groups drives the corresponding outer positioning plate 21 and inner positioning plate 22 to move synchronously in opposite directions. The outer positioning plate 21 contacts the base 34 from the outside. The inner positioning plate 22 drives the adjustable positioning plate 29 to contact the base 34 from the inside. The outer positioning plate 21 and the adjustable positioning plate 29 cooperate to clamp and fix the base 34 on both sides. During this process, the auxiliary push plate 23 on the outer positioning plate 21 synchronously contacts and pushes the end of the U-shaped frame 35, causing the U-shaped frame 35 and its clamping mechanism to be finely adjusted along the length of the support frame 1 along with the base 34. Finally, the end of the U-shaped frame 35 is precisely flush with the side of the base 34, realizing the synchronous and precise positioning of the two sets of bases 34 and the two sets of U-shaped frames 35. 7. Finally, start the lifting cylinder 28. The free end of the lifting cylinder 28 retracts, causing the U-shaped frame clamping mechanism 3 and the clamped U-shaped frame 35 to fall as a whole, so that the lower surface of the U-shaped frame 35 is in close contact with the upper surface of the base 34, completing the final positioning before welding. At this time, the subsequent welding operation can be carried out.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A welding positioning device for a vibration friction welding machine frame, characterized in that, include: A support frame (1) has multiple auxiliary rollers (2) spaced apart along its length. The auxiliary rollers (2) are used to support and move the base (34) along its length. U-shaped frame clamping mechanism (3) is used to clamp U-shaped frame (35) and drive it to move along the width direction of support frame (1); The positioning component (4) is used to clamp the fixed base (34) along the length direction of the support frame (1) and to position the U-shaped frame (35) synchronously during the movement. The U-shaped frame clamping mechanism (3) includes a base plate (5) and side plates (6). The side plates (6) are symmetrically arranged in two sets on both sides of the base plate (5), and the distance between the two sets of side plates (6) is adjustable. The base plate (5) is provided with multiple sets of bottom support plates (7). The bottom support plates (7) are rotatably provided with support rollers (8). The axis directions of the support rollers (8) of the two adjacent sets of bottom support plates (7) are perpendicular to each other, and the two adjacent sets of bottom support plates (7) are configured to alternately rise and fall within the base plate (5).

2. The positioning device for welding the frame of a vibration friction welding machine according to claim 1, characterized in that, Multiple sets of lifting shafts are rotatably provided inside the base plate (5). The bottom support plate (7) is arranged in a one-to-one correspondence with the lifting shafts. Lifting components are provided on the lifting shafts. The bottom support plate (7) is fixedly connected to the lifting components. Two adjacent sets of bottom support plates (7) are driven to rise and fall alternately by the lifting components. The base plate (5) is provided with a partition (9). The lifting assembly includes a lifting plate (10) and a lifting plate (11). The lifting plate (10) is fixed on the lifting shaft. The lifting plate (10) is eccentrically provided with a drive column (12). The lifting plate (11) is slidably disposed on the partition (9). The bottom support plate (7) is disposed on the lifting plate (11) and located above the partition (9). The lower end of the lifting plate (11) is provided with a drive plate (13). The drive plate (13) is provided with a drive groove (14). The drive column (12) is engaged and slidably disposed in the drive groove (14). The installation phase of the drive columns (12) of two adjacent sets of the lifting assembly on the lifting plate (10) is 180° out of phase.

3. The positioning device for welding the frame of a vibration friction welding machine according to claim 1, characterized in that, The base plate (5) is provided with a spacing adjustment mechanism; the spacing adjustment mechanism includes a spacing adjustment motor (18), a spacing adjustment screw (19) and a spacing adjustment slide (20). The spacing adjustment motor (18) is located on the base plate (5). The spacing adjustment screw (19) is rotatably located on the inner wall of the base plate (5) and one end is connected to the output shaft of the spacing adjustment motor (18). The spacing adjustment slide (20) is located on the inner wall of the base plate (5) and is arranged parallel to the spacing adjustment screw (19). The spacing adjustment screw (19) is a bidirectional screw. The two sets of side plates (6) are connected to the two ends of the spacing adjustment screw (19) by threads and are slidably located at the two ends of the spacing adjustment slide (20).

4. The positioning device for welding the frame of a vibration friction welding machine according to claim 1, characterized in that, The positioning component (4) is provided in two sets corresponding to the base (34). The spacing between the two sets of positioning components (4) along the length of the support frame (1) is adjustable. Each set of positioning components (4) includes an outer positioning plate (21) and an inner positioning plate (22). The spacing between the outer positioning plate (21) and the inner positioning plate (22) along the length of the support frame (1) is adjustable.

5. The positioning device for welding the frame of a vibration friction welding machine according to claim 4, characterized in that, The lengths of the outer positioning plate (21) and the inner positioning plate (22) are both less than the length of the base (34); the outer positioning plate (21) is provided with auxiliary push plates (23) on both sides along the height direction.

6. The positioning device for welding the frame of a vibration friction welding machine according to claim 1, characterized in that, The support frame (1) is provided with two sets of lead screw and slide guide drive mechanisms. The two sets of lead screw and slide guide drive mechanisms are the first drive mechanism and the second drive mechanism, respectively. The first drive mechanism and the second drive mechanism are staggered in the support frame (1). The U-shaped frame clamping mechanism (3) is provided on the first drive mechanism, and the positioning component (4) is provided on the second drive mechanism.

7. The positioning device for welding the frame of a vibration friction welding machine according to claim 6, characterized in that, The lead screw and slide guide drive mechanism includes a drive motor (24), a drive lead screw (25) and a guide slide (26). The drive motor (24) is mounted on the support frame (1), the drive lead screw (25) is rotatably mounted on the support frame (1), the drive lead screw (25) is connected to the output shaft of the drive motor (24), and the guide slide (26) is mounted on the support frame (1) and is parallel to the drive lead screw (25).

8. The positioning device for welding the frame of a vibration friction welding machine according to claim 7, characterized in that, The first drive mechanism has threaded sections with opposite thread directions at both ends of the drive screw (25). Each of the two sets of threaded sections is connected to a set of threaded seats (27) by threads. The threaded seats (27) are slidably mounted on the guide slide rod (26) of the first drive mechanism. The threaded seats (27) are equipped with lifting cylinders (28). The U-shaped frame clamping mechanism (3) is located at the free end of the lifting cylinder (28).

9. The positioning device for welding the frame of a vibration friction welding machine according to claim 7, characterized in that, The second drive mechanism has a drive screw (25) with threaded groups with opposite thread directions at both ends. The two sets of positioning components (4) are respectively connected to the two sets of threaded groups by threads. Each set of threaded groups includes two threaded segments with opposite thread directions. The outer positioning plate (21) and the inner positioning plate (22) are respectively threaded to the two threaded segments of the threaded group and are slidably mounted on the guide slide rod (26).

10. The positioning device for welding the frame of a vibration friction welding machine according to claim 9, characterized in that, The inner positioning plate (22) is provided with an adjustable positioning plate (29), and the position of the adjustable positioning plate (29) on the inner positioning plate (22) can be adjusted along the length direction of the support frame (1).

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