Rotatable welding tool

Abstract

The utility model discloses a rotatable welding tool which comprises a mounting shaft, the mounting shaft comprises a driving shaft and a driven shaft, and the driving shaft is matched with the driven shaft through a first limiting structure and can slide relative to the driven shaft in the axial direction and synchronously rotate in the rotating direction; a mounting structure for fixing a plastic part to be welded is arranged on the outer surface of the driven shaft; the rotating mechanism is used for driving the driving shaft to rotate so as to drive the driven shaft to rotate synchronously; and the transverse moving mechanism is used for driving the driven shaft to slide in the axial direction relative to the driving shaft. The mounting shaft is driven to rotate through the rotating mechanism, so that the to-be-welded plastic part fixedly mounted on the mounting shaft can be driven to rotate at any angle when welding is needed. The mounting shaft is divided into the driving shaft and the driven shaft which can slide relative to the axial direction, and the driven shaft is controlled by the transverse moving mechanism to move in the transverse direction.

Description

Technical Field

[0001] This utility model relates to the field of welding machines, and more specifically to a rotatable welding fixture. Background Technology

[0002] Vibration friction welding involves bringing two plastic parts into contact and rubbing them together under specific pressure, amplitude, and frequency. The friction generates heat, causing the material to melt at the weld interface. Under pressure, the molten plastic flows out of the weld area, forming an overflow. After the vibration stops, the molten plastic layer solidifies, creating a strong joint.

[0003] Existing vibration friction welding fixtures are usually fixed in shape and cannot meet the requirements of arbitrary angle rotation and lateral movement during welding. Therefore, this application is made. Utility Model Content

[0004] This invention provides a rotatable welding fixture to solve at least one of the above-mentioned technical problems.

[0005] A rotatable welding fixture includes: a mounting shaft, which includes a drive shaft and a driven shaft. The drive shaft is axially slidable relative to the driven shaft and rotates synchronously in the rotational direction via a first limiting structure. The outer surface of the driven shaft is provided with a mounting structure for fixing a plastic part to be welded. A rotation mechanism is used to drive the drive shaft to rotate, thereby driving the driven shaft to rotate synchronously. A traverse mechanism is used to drive the driven shaft to slide axially relative to the drive shaft.

[0006] Further optimization of this technical solution includes a base, with the rotating mechanism mounted on one side of the base, the transverse mechanism mounted on the other side of the base, the drive shaft of the mounting shaft connected to the rotating mechanism, and the driven shaft of the mounting shaft connected to the transverse mechanism.

[0007] To further optimize this technical solution, the transverse mechanism is provided with a bearing seat for sleeved with the driven shaft, and a second limiting structure that cooperates with the driven shaft for axial limiting.

[0008] To further optimize this technical solution, the rotating mechanism includes a drive unit and a braking unit. The drive unit is used to drive the drive shaft to rotate, and the braking unit is used to mechanically fasten the drive shaft after it rotates to the target angle.

[0009] To further optimize this technical solution, the drive unit includes a drive motor, a drive wheel, a belt, and a driven wheel. The output shaft of the drive motor is connected to the drive wheel, the belt drive is connected to the drive wheel and the driven wheel, and the driven wheel is engaged with the drive shaft.

[0010] To further optimize this technical solution, an angle sensor is also included, which is used to obtain the rotation angle of the drive shaft.

[0011] To further optimize this technical solution, the drive shaft is slidably sleeved inside the driven shaft, and the first limiting structure is a concave strip or convex strip placed on the drive shaft, and a convex strip or groove adapted to be provided on the inner wall of the driven shaft.

[0012] To further optimize this technical solution, the drive shaft has at least three concave or convex strips, which are equidistantly and circumferentially spaced on the outer surface of the drive shaft.

[0013] To further optimize this technical solution, the mounting structure includes a mounting base and a reinforcing retaining ring. The mounting base is fixed on the driven shaft, and the reinforcing retaining ring is fixed on the driven shaft and is used to reinforce the mounting base.

[0014] To further optimize this technical solution, a lateral position sensor is provided on the mounting base, which is used to obtain the lateral position of the mounting base.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) The mounting shaft is driven to rotate by a rotating mechanism, so that when welding is required, the plastic part to be welded, which is fixedly mounted on the mounting shaft, can be rotated at any angle.

[0017] (2) By dividing the mounting shaft into an active shaft and a driven shaft that can be slidably arranged in the axial direction, and controlling the driven shaft to move laterally through a transverse mechanism, the plastic part to be welded that is fixedly mounted on the driven shaft can be driven to move laterally at any position when welding is required. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of the rotatable welding fixture according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the second-view structure;

[0020] Figure 3 yes Figure 1 A first-view structural schematic diagram of the mounting shaft;

[0021] Figure 4 yes Figure 3 A second-view structural diagram.

[0022] In the diagram: 1. Mounting shaft; 11. Drive shaft; 12. Driven shaft; 13. Mounting base; 14. Reinforcing retaining ring; 2. Rotating mechanism; 21. Drive motor; 22. Drive wheel; 23. Belt; 24. Driven wheel; 25. Braking unit; 3. Lateral movement mechanism; 31. Bearing housing; 32. Guide rail; 33. Slide; 34. Drive cylinder; 35. Lateral lock; 4. Base. Detailed Implementation

[0023] 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.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0027] Please refer to Figures 1 to 4A rotatable welding fixture includes a mounting shaft 1, a rotating mechanism 2, and a transverse mechanism 3. The mounting shaft 1 includes a drive shaft 11, a driven shaft 12, and a mounting structure. The drive shaft 11 cooperates with the driven shaft 12 through a first limiting structure, allowing the driven shaft 12 to slide relative to the drive shaft 11 in the axial direction. The drive shaft 11 and the driven shaft 12 rotate synchronously in the rotational direction. The outer surface of the driven shaft 12 is provided with a mounting structure for fixing the plastic part to be welded. The plastic part to be welded is fixed to the driven part by the mounting structure through snap-fit ​​or locking methods.

[0028] A rotating mechanism 2 is used to drive the drive shaft 11 to rotate, thereby causing the driven shaft 12 to rotate synchronously. In this embodiment, the rotating mechanism 2 includes a drive unit and a braking unit 25. The drive unit is used to drive the drive shaft 11 to rotate, and the braking unit 25 is used to mechanically fasten the drive shaft 11 after it rotates to a target angle, preventing welding failure caused by the rotation of the mounting shaft 11 during welding of the plastic parts to be welded. In this embodiment, the drive unit includes a drive motor 21, a drive wheel 22, a belt 23, and a driven wheel 24. The output shaft of the drive motor 21 is connected to the drive wheel 22, the belt 23 is drivingly connected to the drive wheel 22 and the driven wheel 24, and the driven wheel 24 is engaged with the drive shaft 11.

[0029] The lateral movement mechanism 3 is used to drive the driven shaft 12 to slide axially relative to the driving shaft 11. The lateral movement mechanism 3 is provided with a bearing seat 31 for sleeved on the driven shaft 12, and a second limiting structure that cooperates with the driven shaft 12 for axial limiting. This second limiting structure allows the driven shaft 12 to have limiting pins at both ends of the bearing seat 31, or other structures that can limit axial movement, thereby enabling the driven shaft 12 to both rotate relative to the lateral movement mechanism 3 and move laterally with the lateral movement mechanism 3.

[0030] The transverse mechanism 3 also includes a guide rail 32, a slide block 33, and a drive cylinder 34; the slide block 33 is mounted on the guide rail 32, the drive cylinder 34 is used to drive the slide block 33 to move axially relative to the driven shaft 12, and the bearing seat 31 is mounted on the slide block 33.

[0031] Furthermore, the lateral movement mechanism 3 also includes a lateral lock 35, which is used to mechanically fasten the slide block 33 after the driven shaft 12 has moved laterally to the target angle, so as to prevent the installation shaft 1 from moving laterally and causing welding failure when welding the plastic parts to be welded.

[0032] Furthermore, it also includes a base 4, the rotating mechanism 2 is installed on one side of the base 4, the transverse mechanism 3 is installed on the other side of the base 4, the driving shaft 11 of the mounting shaft 1 is connected to the rotating mechanism 2, and the driven shaft 12 of the mounting shaft 1 is connected to the transverse mechanism 3.

[0033] Furthermore, the drive shaft 11 is slidably sleeved within the driven shaft 12, and the first limiting structure is a concave or convex strip placed on the drive shaft 11, and a convex strip or groove adapted to be disposed on the inner wall of the driven shaft 12. The drive shaft 11 has at least three concave or convex strips, which are equidistantly circumferentially spaced on the outer surface of the drive shaft 11.

[0034] Furthermore, the mounting structure includes a mounting base 13 and a reinforcing retaining ring 14. The mounting base 13 is fixed to the driven shaft 12, and the reinforcing retaining ring 14 is fixed to the driven shaft 12 and used to reinforce the mounting base 13. In the view of this embodiment, only one mounting base 13 is provided, but depending on the specific structure of the plastic part to be welded, multiple mounting bases 13 can be provided on the driven shaft, and the specific structure of the mounting base 13 is also adapted to the plastic part to be welded.

[0035] This embodiment also includes an angle sensor, which is used to obtain the rotation angle of the drive shaft 11 and send it to the controller of the welding machine through a signal connection. The controller controls the drive motor 21 to rotate or controls the braking unit 25 to lock or release through the signal connection.

[0036] This embodiment also includes a lateral position sensor, which is disposed on the mounting base 13. The lateral position sensor is used to obtain the lateral position of the mounting base 13. The lateral position sensor signal is sent to the controller of the welding machine. The controller controls the extension and retraction of the drive cylinder 34 or controls the lateral lock 35 to lock or release through the signal connection.

[0037] 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 rotatable welding fixture, characterized in that, include: Mounting shaft (1), the mounting shaft (1) includes a driving shaft (11) and a driven shaft (12). The driving shaft (11) is axially slidable relative to the driven shaft (12) and rotates synchronously in the rotation direction through a first limiting structure. The outer surface of the driven shaft (12) is provided with a mounting structure for fixing the plastic part to be welded. A rotating mechanism (2) is used to drive the drive shaft (11) to rotate, so as to drive the driven shaft (12) to rotate synchronously; A transverse mechanism (3) is used to drive the driven shaft (12) to slide axially relative to the driving shaft (11).

2. The rotatable welding fixture according to claim 1, characterized in that, It also includes a base (4), the rotating mechanism (2) is installed on one side of the base (4), the transverse mechanism (3) is installed on the other side of the base (4), the driving shaft (11) of the mounting shaft (1) is connected to the rotating mechanism (2), and the driven shaft (12) of the mounting shaft (1) is connected to the transverse mechanism (3).

3. The rotatable welding fixture according to claim 2, characterized in that, The transverse mechanism (3) is provided with a bearing seat (31) for sleeved with the driven shaft (12), and is provided with a second limiting structure that cooperates with the driven shaft (12) for axial limiting.

4. The rotatable welding fixture according to claim 2, characterized in that, The rotating mechanism (2) includes a drive unit and a braking unit (25). The drive unit is used to drive the drive shaft (11) to rotate, and the braking unit (25) is used to mechanically fasten the drive shaft (11) after it rotates to the target angle.

5. The rotatable welding fixture according to claim 4, characterized in that, The drive unit includes a drive motor (21), a drive wheel (22), a belt (23), and a driven wheel (24). The output shaft of the drive motor (21) is connected to the drive wheel (22). The belt (23) is connected to the drive wheel (22) and the driven wheel (24). The driven wheel (24) is engaged with the drive shaft (11).

6. The rotatable welding fixture according to claim 5, characterized in that, It also includes an angle sensor for obtaining the rotation angle of the drive shaft (11).

7. The rotatable welding fixture according to claim 1, characterized in that, The drive shaft (11) is slidably sleeved inside the driven shaft (12), and the first limiting structure is a concave strip or convex strip placed on the drive shaft (11), and a convex strip or groove adapted to be provided on the inner wall of the driven shaft (12).

8. The rotatable welding fixture according to claim 7, characterized in that, The drive shaft (11) has at least three concave or convex strips, which are equidistantly and circumferentially spaced on the outer surface of the drive shaft (11).

9. The rotatable welding fixture according to claim 1, characterized in that, The mounting structure includes a mounting base (13) and a reinforcing retaining ring (14). The mounting base (13) is fixed on the driven shaft (12), and the reinforcing retaining ring (14) is fixed on the driven shaft (12) and is used to reinforce the mounting base (13).

10. The rotatable welding fixture according to claim 9, characterized in that, A lateral position sensor is provided on the mounting base (13), which is used to obtain the lateral position of the mounting base (13).

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