Positioning and fixing device for laser welding

Abstract

The utility model discloses a positioning and fixing device for laser welding, and relates to the technical field of laser welding. The rotating ring is rotationally connected to the machining table; the fixed ring is fixedly connected to the machining table, and the fixed ring is located on the inner side of the rotating ring; the clamping assemblies are arranged on the fixing ring at intervals in a surrounding mode, each clamping assembly comprises a moving rod and a connecting rod, and the moving rods are connected to the fixing ring in a sliding mode and can slide in the radial direction of the fixing ring. The rotating ring rotates to push the moving rods to move towards the workpiece, so that the moving rods clamp and fix the workpiece in all directions, the clamping spring contracts in a self-adaptive mode at the moment, all the side faces of the workpieces in different shapes can be clamped and fixed, when the workpiece needs to be taken out, the clamping block is made to leave the clamping groove, the rotating ring can rotate freely, and the workpiece can be taken out conveniently. And the reset spring pushes each moving rod to reset, so that the workpiece is conveniently taken out.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a positioning and fixing device for laser welding. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source. By controlling parameters such as the width, energy, peak power, and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. During laser welding, the workpiece is first fixed and clamped using a positioning and fixing device to facilitate laser welding.

[0003] Most existing positioning and fixing devices are relatively simple and cannot effectively fix workpieces of different shapes during the welding process. The workpieces are prone to displacement during welding, which leads to a decrease in welding accuracy and may even damage the workpieces in severe cases. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a laser welding positioning and fixing device that can effectively fix workpieces of different shapes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A positioning and fixing device for laser welding, comprising:

[0007] Processing table;

[0008] A rotating ring, which is rotatably connected to the machining table;

[0009] A fixed ring is fixedly connected to the machining table, and the fixed ring is located inside the rotating ring;

[0010] And multiple clamping components, each clamping component is arranged around the fixed ring at intervals. Each clamping component includes a moving rod and a connecting rod. The moving rod is slidably connected to the fixed ring and can slide radially along the fixed ring. One end of the moving rod faces the center of the fixed ring, and the other end is rotatably connected to one end of the connecting rod. The other end of the connecting rod is rotatably connected to the rotating ring.

[0011] Furthermore, the rotating ring is located outside the fixed ring, and the centers of the rotating ring and the fixed ring coincide.

[0012] Furthermore, the number of clamping components is set to an even number, and the clamping components are arranged opposite each other in pairs.

[0013] Furthermore, the fixed ring is provided with a plurality of sliding holes spaced around it, and each moving rod is slidably connected to the inside of a sliding hole so that the moving rod slides radially along the fixed ring.

[0014] Furthermore, the clamping assembly also includes a movable cylinder and a clamping spring. The movable cylinder is slidably connected to one end of the movable rod, and the clamping spring is located inside the movable cylinder, with its two ends abutting against one side of the inner wall of the movable cylinder and one end of the movable rod, respectively.

[0015] Furthermore, a rubber pad is provided at one end of the movable cylinder.

[0016] Furthermore, the clamping assembly also includes a return spring, which is sleeved on the outside of the moving rod, with one end of the return spring abutting against the outer wall of the rotating ring and the other end fixed to the moving rod.

[0017] Furthermore, it also includes a fixing component, which includes a locking rod, a locking block, and a crossbar. The locking block is fixedly connected to the bottom end of the locking rod, and the crossbar is fixedly connected to one side of the top end of the locking rod. A fixing block is fixedly connected to the outside of the rotating ring. A through hole is opened in the middle of the fixing block. The through hole is adapted to the locking rod so that the locking rod can slide inside the through hole. Multiple slots are spaced around the rotating ring on the processing table, and the locking block can be inserted into the inside of a slot.

[0018] Furthermore, the lower end of the card block is curved.

[0019] Furthermore, a cover plate is fixedly connected to the top of the fixed ring, and the cover plate is located between the rotating ring and the fixed ring.

[0020] The beneficial effects of this utility model are as follows:

[0021] In this utility model, the positioning and fixing device for laser welding rotates the rotating ring, causing each connecting rod to push each moving rod to move toward the workpiece, thereby enabling the moving rod to clamp and fix the workpiece from all directions. At this time, the moving rod will push the moving cylinder to clamp the workpiece through the clamping spring. The clamping spring adaptively contracts, so that each clamping component can clamp and fix each side of the workpiece with different shapes.

[0022] After laser welding is completed, when it is necessary to remove the workpiece, hold the crossbar and move the clamping rod upward, so that the clamping block leaves the clamping slot. At this time, the rotating ring can rotate freely, and the compressed return spring will push each moving rod to return to its original position, thereby releasing the welded workpiece and facilitating the removal of the workpiece after processing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a positioning and fixing device for laser welding proposed in this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the fixing component of a positioning and fixing device for laser welding proposed in this utility model;

[0025] Figure 3This is a top sectional view of a positioning and fixing device for laser welding proposed in this utility model;

[0026] Figure 4 This is a top view of the clamping assembly of a positioning and fixing device for laser welding proposed in this utility model.

[0027] In the diagram: 1. Processing table, 101. Slot, 2. Rotating ring, 3. Fixed ring, 4. Clamping assembly, 401. Moving rod, 402. Moving cylinder, 403. Clamping spring, 404. Rubber pad, 405. Return spring, 406. Connecting rod, 5. Fixed block, 6. Fixed assembly, 601. Clamping rod, 602. Clamping block, 603. Crossbar, 7. Cover plate. Detailed Implementation

[0028] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0029] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0030] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent 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 this patent.

[0031] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0032] Reference Figure 1-4 A positioning and fixing device for laser welding is used for positioning and fixing workpieces in laser welding, in order to effectively fix workpieces of different shapes.

[0033] The positioning and fixing device for laser welding includes a processing table 1, a rotating ring 2, a fixed ring 3, multiple clamping components 4, and a fixing component 6;

[0034] Rotating ring 2 is rotatably connected to processing table 1, and fixed ring 3 is fixedly connected to processing table 1. Fixed ring 3 is located inside rotating ring 2, and the centers of rotating ring 2 and fixed ring 3 coincide. A cover plate 7 is fixedly connected to the top of fixed ring 3, and the cover plate 7 is located between rotating ring 2 and fixed ring 3.

[0035] Each clamping assembly 4 includes a moving rod 401 and a connecting rod 406. A plurality of sliding holes are spaced around the fixed ring 3. The moving rod 401 in each clamping assembly 4 is slidably connected to the inside of one sliding hole, allowing the moving rod 401 to slide radially along the fixed ring 3. Each clamping assembly 4 is spaced around the fixed ring 3, with one end of the moving rod 401 facing the center of the fixed ring 3 and the other end rotatably connected to one end of the connecting rod 406. The other end of the connecting rod 406 is rotatably connected to the rotating ring 2. When the rotating ring 2 rotates, it can push each connecting rod 406 to move, thereby pushing each moving rod 401 to move towards the center of the fixed ring 3 within the sliding hole. This allows for multi-directional clamping and fixing of the workpiece placed at the center position. The number of clamping assemblies 4 is set to an even number, with each clamping assembly 4 arranged in pairs facing each other. This allows each clamping assembly 4 to clamp the workpiece relative to the others, improving the stability of the workpiece clamping.

[0036] The clamping assembly 4 also includes a movable cylinder 402 and a clamping spring 403. The movable cylinder 402 is slidably connected to one end of the movable rod 401. The clamping spring 403 is located inside the movable cylinder 402, and the two ends of the clamping spring 403 abut against one side of the inner wall of the movable cylinder 402 and one end of the movable rod 401, respectively. One end of the movable cylinder 402 is provided with a rubber pad 404. When the movable rod 401 moves to clamp the workpiece, the movable rod 401 will push the movable cylinder 402 through the clamping spring 403, so that the movable cylinder 402 clamps and fixes the workpiece. At this time, the clamping spring 403 adaptively contracts, so that each movable cylinder 402 clamps and fixes each side of the workpiece with different shapes.

[0037] The clamping assembly 4 also includes a return spring 405. The return spring 405 is sleeved on the outside of the moving rod 401, with one end of the return spring 405 abutting against the outer wall of the rotating ring 2 and the other end fixed to the moving rod 401. When the moving rod 401 moves to clamp the workpiece, the return spring 405 will be compressed, so that when the workpiece is removed after welding, each moving rod 401 will automatically reset.

[0038] The processing table 1 has multiple slots 101 spaced around the rotating ring 2. The fixing component 6 includes a clamping rod 601, a clamping block 602, and a crossbar 603. The clamping block 602 is fixedly connected to the bottom end of the clamping rod 601, and the crossbar 603 is fixedly connected to the top side of the clamping rod 601. A fixing block 5 is fixedly connected to the outside of the rotating ring 2. A square through hole is opened in the middle of the fixing block 5. The through hole is adapted to the clamping rod 601. After the workpiece is clamped and fixed, the clamping rod 601 can be moved downward by holding the crossbar 603, so that the clamping rod 601 slides inside the through hole, controlling the clamping block 602 to insert into the inside of a slot 101, so that the rotating ring 2 is fixed on the processing table 1, thereby positioning and fixing the workpiece, which is convenient for subsequent laser welding. The lower end of the clamping block 602 is arc-shaped, which makes it easy for the clamping block 602 to be inserted into the inside of the slot 101.

[0039] The working principle of the positioning and fixing device for laser welding is as follows: The workpiece is placed on the processing table 1, and then the horizontal bar 603 is held to move the clamping rod 601 upward, so that the clamping rod 601 slides inside the through hole, controlling the clamping block 602 to leave the clamping slot 101. At this time, the rotating ring 2 can rotate, and the rotating ring 2 pushes each connecting rod 406 to move, thereby pushing each moving rod 401 to move towards the center of the fixing ring 3 inside the sliding hole. One end of each moving rod 401 is close to the workpiece placed at the center position, and at this time, the moving rod 401 will push the moving cylinder 402 through the clamping spring 403, so that the moving cylinder 402 clamps and fixes the workpiece. At this time, the clamping spring 403 adaptively contracts, so that each moving cylinder 402 clamps and fixes each side of the workpiece with different shapes.

[0040] After the workpiece is clamped and fixed, the crossbar 603 is held to move the clamping rod 601 downward, so that the clamping rod 601 slides inside the through hole, and the clamping block 602 is inserted into the inside of a slot 101, so that the rotating ring 2 is fixed on the processing table 1, thereby positioning and fixing the workpiece, which is convenient for subsequent laser welding.

[0041] After laser welding is completed, when it is necessary to remove the workpiece, hold the crossbar 603 to move the clamping rod 601 upward, so that the clamping rod 601 slides inside the through hole, and controls the clamping block 602 to leave the clamping slot 101. At this time, the rotating ring 2 can rotate freely, and the compressed return spring 405 will push each moving rod 401 to return to its original position, thereby releasing the welded workpiece and facilitating the removal of the workpiece after processing.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning and fixing device for laser welding, characterized in that, include: Processing table (1); A rotating ring (2) is rotatably connected to the processing table (1); A fixed ring (3) is fixedly connected to the processing table (1), and the fixed ring (3) is located inside the rotating ring (2); And multiple clamping components (4), each clamping component (4) is arranged around the fixed ring (3) at intervals. Each clamping component (4) includes a moving rod (401) and a connecting rod (406). The moving rod (401) is slidably connected to the fixed ring (3) and can slide radially along the fixed ring (3). One end of the moving rod (401) is facing the center of the fixed ring (3), and the other end is rotatably connected to one end of the connecting rod (406). The other end of the connecting rod (406) is rotatably connected to the rotating ring (2).

2. The positioning and fixing device for laser welding according to claim 1, characterized in that: The rotating ring (2) is located outside the fixed ring (3), and the center of the rotating ring (2) coincides with that of the fixed ring (3).

3. The positioning and fixing device for laser welding according to claim 1, characterized in that: The number of clamping components (4) is set to an even number, and the clamping components (4) are arranged opposite each other in pairs.

4. The positioning and fixing device for laser welding according to claim 1, characterized in that: The fixed ring (3) is provided with a plurality of sliding holes spaced around it, and each of the moving rods (401) is slidably connected to the inside of one of the sliding holes so that the moving rod (401) slides radially along the fixed ring (3).

5. The positioning and fixing device for laser welding according to claim 1, characterized in that: The clamping assembly (4) further includes a movable cylinder (402) and a clamping spring (403). The movable cylinder (402) is slidably connected to one end of the movable rod (401). The clamping spring (403) is located inside the movable cylinder (402), and the two ends of the clamping spring (403) abut against one side of the inner wall of the movable cylinder (402) and one end of the movable rod (401), respectively.

6. The positioning and fixing device for laser welding according to claim 5, characterized in that: A rubber pad (404) is provided at one end of the movable cylinder (402).

7. The positioning and fixing device for laser welding according to claim 1, characterized in that: The clamping assembly (4) also includes a return spring (405), which is sleeved on the outside of the moving rod (401), with one end of the return spring (405) abutting against the outer wall of the rotating ring (2) and the other end fixed to the moving rod (401).

8. The positioning and fixing device for laser welding according to claim 1, characterized in that: It also includes a fixing component (6), which includes a locking rod (601), a locking block (602), and a crossbar (603). The locking block (602) is fixedly connected to the bottom end of the locking rod (601), and the crossbar (603) is fixedly connected to one side of the top end of the locking rod (601). A fixing block (5) is fixedly connected to the outside of the rotating ring (2). A through hole is provided in the middle of the fixing block (5). The through hole is adapted to the locking rod (601) so that the locking rod (601) can slide inside the through hole. Multiple slots (101) are provided around the rotating ring (2) on the processing table (1). The locking block (602) can be inserted into the inside of one of the slots (101).

9. A positioning and fixing device for laser welding according to claim 8, characterized in that: The lower end of the card block (602) is arc-shaped.

10. A positioning and fixing device for laser welding according to claim 1, characterized in that: The top end of the fixed ring (3) is fixedly connected to a cover plate (7), which is located between the rotating ring (2) and the fixed ring (3).

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