Servo low-frequency vibration friction welding machine

Abstract

The utility model relates to the technical field of friction welding, in particular to a servo low-frequency vibration friction welding machine which comprises a machine body, a mounting frame, a driving table and a connecting plate, the mounting frame is fixed above the machine body, the driving table is arranged above the machine body, the connecting plate is connected above the driving table, a lower die cover is fixed above the connecting plate, and the lower die cover is fixed above the machine body. A lower die cover is arranged on the upper side of the mounting frame, an upper die cover is arranged above the lower die cover and is arranged on the inner side of the mounting frame, a vertical driving mechanism is arranged on the outer side of the driving table and controls the driving table to move vertically, and positioning blocks are arranged in the lower die cover and are distributed at equal angles relative to the center of the lower die cover. According to the servo low-frequency vibration friction welding machine, movement of the movable plate is locked through the locking rod, so that the position of the guide block is kept stable, the limiting effect on a workpiece is kept, the workpiece can keep good stability during follow-up welding machining, and deviation caused by the influence of a spring is avoided.

Description

Technical Field

[0001] This utility model relates to the field of friction welding technology, specifically a servo low-frequency vibration friction welding machine. Background Technology

[0002] Vibration friction welding machines, as a welding process, place workpieces into upper and lower molds, control the mold movement to align the workpieces, and then perform welding. Existing technology (publication number CN211441206U, published September 8, 2020) discloses a sliding table drive mechanism and a vibration friction welding machine. One sliding table drive mechanism includes: a support component; a sliding table connected to and movable relative to the support component; and a drive source connected to the support component. The drive source and the sliding table are connected via a connecting structure. This invention, through the connection structure, allows the drive source to drive the connecting structure during use, thereby causing the sliding table to slide on the support component. This configuration provides both a high sliding speed and controllable sliding distance. The addition of a transmission unit, which includes at least one of a reducer and a clutch, ensures smoother output of driving force from the drive unit and allows for separation of the drive unit from the connecting structure, facilitating operation.

[0003] Current friction welding machines require limiting the position of products when they are placed on the equipment to ensure welding can be completed. However, using springs for clamping during positioning can easily lead to significant deviations during subsequent vibrations. Using ordinary mechanical positioning methods is cumbersome, requiring specific operations for placing and removing workpieces, which reduces the overall ease of use. Utility Model Content

[0004] The purpose of this utility model is to provide a servo low-frequency vibration friction welding machine to solve the problems mentioned in the background art. When processing products, the current friction welding machine needs to limit the product when it is placed on the machine so that it can be welded later. However, when positioning, the clamping effect of the spring is used directly, which is prone to large deviations during subsequent vibration. The operation of ordinary mechanical positioning method is cumbersome, and corresponding operations are required for the placement and removal of the workpiece.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a servo low-frequency vibration friction welding machine, comprising a machine body, a mounting frame, a drive platform, and a connecting plate. The mounting frame is fixed above the machine body. A drive platform is disposed above the machine body, and a connecting plate is connected above the drive platform. A lower mold cover is fixed above the connecting plate, and an upper mold cover is disposed above the lower mold cover, with the upper mold cover disposed inside the mounting frame. A vertical drive mechanism is disposed outside the drive platform, controlling the vertical movement of the drive platform. A positioning block is disposed inside the lower mold cover, and the positioning blocks are evenly distributed about the center of the lower mold cover to provide a limit for the welded parts. A movable plate is fixed outside the positioning block, and a horizontal sliding structure is formed between the movable plate and the lower mold cover. A return spring is fixedly connected to the outside of the positioning block to provide a clamping thrust for the positioning block. A locking mechanism is disposed below the movable plate to provide a limiting effect for the movable plate.

[0006] To further optimize this technical solution, the vertical drive mechanism is a chain drive mechanism, and the vertical drive mechanism is symmetrically arranged on the left and right sides of the drive platform.

[0007] To further optimize this technical solution, a guide block is provided above the positioning block, and the guide block has an inclined structural design.

[0008] To further optimize this technical solution, the locking mechanism includes a locking rod, a fixing ring, and a rotation control mechanism;

[0009] A locking lever is located below the movable plate and inside the lower mold cover.

[0010] A retaining ring is fixed inside the movable plate, and a locking rod passes through the retaining ring to form a threaded connection between the retaining ring and the retaining ring.

[0011] The rotation control mechanism is connected to the fixed ring to control the connection of the fixed ring.

[0012] To further optimize this technical solution, the rotation control mechanism includes a first gear, a movable ring, and an automatic drive mechanism;

[0013] The first gear is located on the outside of the locking rod and between the locking rod to form an up-and-down sliding structure, and the first gear and the lower mold cover are rotatably connected.

[0014] The movable ring is positioned on the outside of the first gear and forms a meshing connection with the first gear;

[0015] An automatic drive mechanism is located on the outside of the moving ring to control its rotation.

[0016] To further optimize this technical solution, a drive block is fixed to the inner side of the first gear, and the drive block and the locking rod form an up-and-down sliding structure.

[0017] To further optimize this technical solution, the automatic drive mechanism includes a second gear, a mounting shaft, a connecting rope, a magnetic block, an attraction block, and a torsion spring;

[0018] The second gear is located on the outer side of the movable ring and forms a meshing connection with the movable ring, and the second gear is located on the front and rear sides of the movable ring.

[0019] The mounting shaft is fixed in the middle of the second gear, and a rotatable connection is formed between the mounting shaft and the lower mold cover;

[0020] The connecting rope is designed to be wrapped around the outside of the mounting shaft;

[0021] The magnetic block is fixed to the outer end of the connecting rope, and the magnetic block and the lower mold cover form a sliding structure.

[0022] An attraction block is fixed above the body, and the attraction block and the magnetic block attract each other;

[0023] A torsion spring is installed at the end of the mounting shaft to provide rotational restoring force for the mounting shaft.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] (1) The workpiece is clamped by the positioning block under the pushing action of the return spring, so as to realize the rapid positioning of the product. A guide block is set above the positioning block, which can facilitate the insertion of the workpiece, so that the workpiece can be quickly positioned and the subsequent picking is more convenient.

[0026] (2) The movement of the movable plate is locked by the locking rod, so that the guide block is kept in a stable position and the workpiece is kept in a limiting position. This ensures that the workpiece can maintain good stability during subsequent welding and avoids displacement due to the influence of the spring.

[0027] (3) The locking rod can move vertically through the rotation of the first gear and the threaded connection between the locking rod and the fixed ring, thereby controlling the locking and unlocking of the movable plate. In addition, multiple first gears can rotate synchronously to achieve the synchronous limiting effect of multiple movable plates.

[0028] (4) The attraction of the magnetic block by the attraction block can control the rotation of the second gear, control the rotation of the movable ring, and make the locking rod lower. Subsequently, the magnetic block and the attraction block are separated when the drive table is raised. The second gear automatically reverses under the action of the torsion spring, which can control the movement of the locking rod to limit the movement of the movable plate. After the welding is completed, the drive table is lowered and the magnetic block is aligned with the attraction block again to form an attraction effect. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a side view of the structure of this utility model;

[0031] Figure 3 This is a top view of the lower mold cover structure of this utility model;

[0032] Figure 4 This is a schematic diagram of the main cross-sectional structure of the lower mold cover of this utility model;

[0033] Figure 5 This is a side sectional view of the lower mold cover of this utility model;

[0034] Figure 6 This is a top-section schematic diagram of the movable ring structure of this utility model.

[0035] In the diagram: 1. Body; 2. Mounting frame; 3. Drive platform; 4. Connecting plate; 5. Lower mold cover; 6. Upper mold cover; 7. Vertical drive mechanism; 8. Positioning block; 9. Movable plate; 10. Return spring; 11. Guide block; 12. Locking rod; 13. Fixing ring; 14. First gear; 15. Movable ring; 16. Drive block; 17. Second gear; 18. Mounting shaft; 19. Connecting rope; 20. Magnetic block; 21. Attraction block; 22. Torsion spring. Detailed Implementation

[0036] 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.

[0037] Please see Figures 1-6 The present invention provides the following technical solution: a servo low-frequency vibration friction welding machine, comprising a machine body 1, a mounting frame 2, a drive table 3 and a connecting plate 4, wherein the mounting frame 2 is fixed above the machine body 1, the drive table 3 is provided above the machine body 1, and the connecting plate 4 is connected above the drive table 3.

[0038] Example 1:

[0039] This embodiment provides the following technical solution: a lower mold cover 5 is fixed above the connecting plate 4, and an upper mold cover 6 is provided above the lower mold cover 5. The upper mold cover 6 is located inside the mounting bracket 2. A vertical drive mechanism 7 is provided on the outside of the drive platform 3. The vertical drive mechanism 7 controls the vertical movement of the drive platform 3. A positioning block 8 is provided inside the lower mold cover 5. The positioning blocks 8 are distributed at equal angles about the center of the lower mold cover 5 to provide a limit for the welded parts. A movable plate 9 is fixed on the outside of the positioning block 8. A horizontal sliding structure is formed between the movable plate 9 and the lower mold cover 5. A return spring 10 is fixedly connected to the outside of the positioning block 8 to provide a clamping force for the positioning block 8. A locking mechanism is provided below the movable plate 9 to provide a limit effect for the movable plate 9. The vertical drive mechanism 7 is a chain drive mechanism. The vertical drive mechanism 7 is symmetrically arranged on the left and right sides of the drive platform 3.

[0040] When in use, the workpiece to be processed is placed inside the lower mold cover 5 and the upper mold cover 6. During welding, the vertical drive mechanism 7 controls the drive table 3 to move upward so that the workpieces are connected. Then, the welding operation is performed by servo low-frequency vibration friction. After welding is completed, the drive table 3 is lowered and the workpiece is removed.

[0041] Example 2:

[0042] Based on Embodiment 1, a guide block 11 is provided above the positioning block 8, and the guide block 11 has an inclined structure design. The locking mechanism includes a locking rod 12, a fixing ring 13 and a rotation control mechanism. The locking rod 12 is located below the movable plate 9 and is located inside the lower mold cover 5. The fixing ring 13 is fixed inside the movable plate 9. The locking rod 12 passes through the fixing ring 13 and forms a threaded connection between the fixing ring 13. The rotation control mechanism is connected to the fixing ring 13 to control the connection of the fixing ring 13.

[0043] When the workpiece is placed inside the lower mold cover 5, the workpiece can be moved by the guide block 11 pressing the positioning block 8 outward, so that the workpiece can be smoothly inserted into the lower mold cover 5 and clamped and positioned by the positioning block 8. The positioning block 8 maintains the limit on the workpiece under the action of the return spring 10.

[0044] Example 3:

[0045] Based on Embodiment 1, a rotation control mechanism is disclosed, comprising a first gear 14, a movable ring 15, and an automatic drive mechanism. The first gear 14 is disposed on the outside of the locking rod 12, forming a sliding structure between the first gear 14 and the locking rod 12, and a rotatable connection is formed between the first gear 14 and the lower mold cover 5. The movable ring 15 is disposed on the outside of the first gear 14, forming a meshing connection between the first gear 14 and the locking rod 12. The automatic drive mechanism is disposed on the outside of the movable ring 15 to control the rotation of the movable ring 15. A drive block 16 is fixed on the inner side of the first gear 14, and a sliding structure is formed between the drive block 16 and the locking rod 12. The automatic drive mechanism includes a second gear 17, a mounting shaft 18, a connecting rope 19, and a magnetic block. 20. A suction block 21 and a torsion spring 22, a second gear 17, are provided on the outside of the movable ring 15 and form a meshing connection between the movable ring 15 and the movable ring 15, and the second gear 17 is located on the front and rear sides of the movable ring 15. A mounting shaft 18 is fixed in the middle of the second gear 17, and a rotatable connection is formed between the mounting shaft 18 and the lower mold cover 5. A connecting rope 19 is provided on the outside of the mounting shaft 18. A magnetic block 20 is fixed at the outer end of the connecting rope 19, and a front and rear sliding structure is formed between the magnetic block 20 and the lower mold cover 5. A suction block 21 is fixed above the machine body 1, and the suction block 21 and the magnetic block 20 attract each other. A torsion spring 22 is provided at the end of the mounting shaft 18 to provide a rotational reset force for the mounting shaft 18.

[0046] When the drive platform 3 moves upward, the attraction block 21 and the magnetic block 20 are misaligned. At this time, the attraction force on the magnetic block 20 disappears, and the torsion spring 22 will drive the mounting shaft 18 to rotate, which will drive the second gear 17 to rotate. The second gear 17 drives the movable ring 15 to rotate through the meshing between the second gear 17 and the movable ring 15. The movable ring 15 drives the first gear 14 to rotate through the meshing between the movable ring 15 and the first gear 14. The first gear 14 drives the locking rod 12 to rotate. The locking rod 12 moves vertically through the threaded connection between the locking rod 12 and the fixed ring 13, so that the locking rod 12 connects with the movable plate 9 and limits the movable plate 9. This allows the workpiece to move synchronously with the lower mold cover 5 during subsequent welding, improving the welding quality. Afterward, the drive platform 3 is lowered so that the magnetic block 20 and the attraction block 21 are aligned. The locking rod 12 moves downward to release the limitation on the movable plate 9, and the workpiece can be picked up.

[0047] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0048] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A servo low-frequency vibration friction welding machine, comprising a machine body (1), a mounting frame (2), a drive table (3) and a connecting plate (4), wherein the mounting frame (2) is fixed above the machine body (1), the drive table (3) is provided above the machine body (1), and the connecting plate (4) is connected above the drive table (3); Its features are: A lower mold cover (5) is fixed above the connecting plate (4), and an upper mold cover (6) is provided above the lower mold cover (5). The upper mold cover (6) is located inside the mounting bracket (2). A vertical drive mechanism (7) is provided on the outside of the drive platform (3). The vertical drive mechanism (7) controls the drive platform (3) to move vertically. A positioning block (8) is provided inside the lower mold cover (5). The positioning blocks (8) are distributed at equal angles about the center of the lower mold cover (5) to provide a limit for the welded parts. A movable plate (9) is fixed on the outside of the positioning block (8). A horizontal sliding structure is formed between the movable plate (9) and the lower mold cover (5). A return spring (10) is fixedly connected on the outside of the positioning block (8) to provide a clamping force for the positioning block (8). A locking mechanism is provided below the movable plate (9) to provide a limit effect for the movable plate (9).

2. The servo low-frequency vibration friction welding machine according to claim 1, characterized in that: The vertical drive mechanism (7) is a chain drive mechanism, and the vertical drive mechanism (7) is symmetrically arranged on the left and right sides of the drive platform (3).

3. A servo low-frequency vibration friction welding machine according to claim 1, characterized in that: A guide block (11) is provided above the positioning block (8), and the guide block (11) is designed with an inclined structure.

4. A servo low-frequency vibration friction welding machine according to claim 1, characterized in that: The locking mechanism includes a locking rod (12), a fixing ring (13), and a rotation control mechanism; A locking rod (12) is located below the movable plate (9) and inside the lower mold cover (5); The fixing ring (13) is fixed inside the movable plate (9), and the locking rod (12) passes through the fixing ring (13) to form a threaded connection between the fixing ring (13) and the fixing ring (13); The rotation control mechanism is connected to the fixed ring (13) to control the connection of the fixed ring (13).

5. A servo low-frequency vibration friction welding machine according to claim 4, characterized in that: The rotation control mechanism includes a first gear (14), a movable ring (15), and an automatic drive mechanism; The first gear (14) is set on the outside of the locking rod (12) and forms an up-and-down sliding structure between the locking rod (12), and the first gear (14) and the lower mold cover (5) form a rotatable connection; The movable ring (15) is disposed on the outside of the first gear (14) and forms a meshing connection between the first gear (14); An automatic drive mechanism is located on the outside of the movable ring (15) to control the rotation of the movable ring (15).

6. A servo low-frequency vibration friction welding machine according to claim 5, characterized in that: A drive block (16) is fixed to the inner side of the first gear (14), and the drive block (16) and the locking rod (12) form an up-and-down sliding structure.

7. A servo low-frequency vibration friction welding machine according to claim 6, characterized in that: The automatic drive mechanism includes a second gear (17), a mounting shaft (18), a connecting rope (19), a magnetic block (20), an attraction block (21), and a torsion spring (22); The second gear (17) is located on the outer side of the movable ring (15) and forms a meshing connection between the movable ring (15), and the second gear (17) is located on the front and rear sides of the movable ring (15). The mounting shaft (18) is fixed in the middle of the second gear (17), and a rotatable connection is formed between the mounting shaft (18) and the lower mold cover (5). The connecting rope (19) is arranged around the outside of the mounting shaft (18); The magnetic block (20) is fixed to the outer end of the connecting rope (19), and the magnetic block (20) and the lower mold cover (5) form a front-to-back sliding structure; An attraction block (21) is fixed above the body (1), and the attraction block (21) and the magnetic block (20) attract each other; A torsion spring (22) is provided at the end of the mounting shaft (18) to provide rotational restoring force to the mounting shaft (18).

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