Self-adaptive pressing device in advancing of laser welding head

Abstract

The utility model discloses a self-adaptive pressing device in the advancing process of a laser welding head, and belongs to the technical field of laser welding. The pressing mechanism is arranged on the side face of the laser head, the pressing mechanism presses the periphery of a welding seam of a plate to be welded, it is guaranteed that the plate is stable in the welding process, and the welding seam does not deviate finally after welding; the pressing mechanism can conduct automatic adjustment according to the pressure set by the PLC, extrusion of a telescopic rod is achieved through a stepping motor, adjustment of the pressure of a pressing head is achieved by combining the pressure value transmitted to the PLC through a pressure sensor, finally, constant-pressure pressing of plates around a welding seam is achieved, the welding seam is stable and attractive, and the welding efficiency is improved. And welding seam deviation or insufficient fusion depth caused by non-uniform pressing pressure can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, specifically to an adaptive clamping device for a laser welding head during its movement. Background Technology

[0002] Laser welding, as an advanced welding technology, uses a laser beam as its energy source and offers advantages such as precise welding positioning and zero pollution. Laser welding equipment, combined with automated control systems, is widely used in automated production lines in industries such as electronics and automobiles. With technological advancements and market demand, handheld laser welding heads have also emerged. These handheld heads are operated by the operator, offering greater flexibility and a wider range of applications.

[0003] These types of laser welding heads have certain drawbacks. If the pressure applied to the weld seam is too low or too high during handheld operation, improper operation can easily lead to weld seam displacement or insufficient penetration. Therefore, the ability to adaptively tighten and maintain the tightening pressure during movement is particularly important and is a problem that urgently needs to be solved. Utility Model Content

[0004] To address the aforementioned problems, this invention provides an adaptive clamping device for the laser welding head during its movement.

[0005] This utility model is achieved through the following technical solution:

[0006] An adaptive clamping device for a laser welding head during travel includes a handle. A laser head and a clamping mechanism are fixed to the side of the handle. The clamping mechanism includes a housing, a stepper motor, a PLC controller, a clamping head, and a pressure sensor. The bottom of the housing is fixed to the side of the handle. A stepper motor is fixed inside the housing. The output end of the stepper motor is connected to one end of the lower part of a telescopic rod. The other end of the lower part of the telescopic rod is connected to one end of the upper part of the telescopic rod. The other end of the upper part of the telescopic rod extends outside the housing. A groove is formed at the outer end of the upper part of the telescopic rod. A pressure sensor is disposed inside the groove. The outer end of the pressure sensor is connected to the clamping head. A PLC controller is disposed on the side of the housing. The stepper motor and the pressure sensor are both electrically connected to the PLC controller.

[0007] The outer casing is also fixed inside a guide sleeve, and the upper part of the telescopic rod passes through the inside of the guide sleeve to form the outer end of the outer casing.

[0008] The outer casing and the laser head are arranged parallel to each other.

[0009] The handle has a hand-held part inside.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention features a clamping mechanism on the side of the laser head. This mechanism presses the area around the weld seam of the plate to be welded, ensuring the stability of the plate during welding and preventing the weld seam from shifting after welding. The clamping mechanism can automatically adjust according to the pressure set by the PLC controller. It uses a stepper motor to advance the telescopic rod, and combines the pressure value transmitted to the PLC controller by the pressure sensor to adjust the pressure of the pressure head. Ultimately, it achieves constant pressure to clamp the plate around the weld seam, resulting in a stable and aesthetically pleasing weld seam that will not shift or have insufficient penetration due to uneven clamping pressure. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1. Handle; 2. Handheld part; 3. Laser head; 4. Housing; 5. Stepper motor; 6. PLC controller; 7. Lower part of telescopic rod; 8. Upper part of telescopic rod; 9. Guide sleeve; 10. Pressure head; 11. Pressure sensor. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] An adaptive clamping device for a laser welding head during travel includes a handle 1. A laser head 3 and a clamping mechanism are fixed to the side of the handle 1. The clamping mechanism includes a housing 4, a stepper motor 5, a PLC controller 6, a clamping head 10, and a pressure sensor 11. The bottom of the housing 4 is fixed to the side of the handle 1. The stepper motor 5 is fixed inside the housing 4. The output end of the stepper motor 5 is connected to one end of the lower part 7 of the telescopic rod. The other end of the lower part 7 of the telescopic rod is connected to one end of the upper part 8 of the telescopic rod. The other end of the upper part 8 of the telescopic rod extends to the outside of the housing 4. A groove is formed at the outer end of the upper part 8 of the telescopic rod. The pressure sensor 11 is installed inside the groove. The outer end of the pressure sensor 11 is connected to the clamping head 10. The PLC controller 6 is installed on the side of the housing 4. The stepper motor 5 and the pressure sensor 11 are both electrically connected to the PLC controller 6.

[0016] Inside the outer casing 4, a guide sleeve 9 is fixed, and the upper part 8 of the telescopic rod passes through the inside of the guide sleeve 9 to set the outer end of the outer casing 4.

[0017] The outer casing 4 and the laser head 3 are arranged parallel to each other.

[0018] The handle 1 has a hand-held part 2 inside for easy hand operation.

[0019] As shown in the attached diagram in the instruction manual. Figure 1As shown, an adaptive clamping device for a laser welding head during movement includes a handle 1. A laser head 3 and a clamping mechanism are fixed to the side of the handle 1. The clamping mechanism includes a housing 4, a stepper motor 5, a PLC controller 6, a clamping head 10, and a pressure sensor 11. The housing 4 and the laser head 3 are arranged parallel to each other. The bottom of the housing 4 is fixed to the side of the handle 1. The stepper motor 5 is fixed inside the housing 4. The output end of the stepper motor 5 is connected to one end of the lower part 7 of the telescopic rod. The other end of the lower part 7 of the telescopic rod is connected to one end of the upper part 8 of the telescopic rod. The lower part 7 and the upper part 8 of the telescopic rod form an electric telescopic rod. The other end of the upper part 8 of the telescopic rod extends to the outside of the housing 4. A groove is opened at the outer end of the upper part 8 of the telescopic rod. The pressure sensor 11 is installed inside the groove. The outer end of the pressure sensor 11 is connected to the clamping head 10. The PLC controller 6 is installed on the side of the housing 4. The stepper motor 5 and the pressure sensor 11 are both electrically connected to the PLC controller 6.

[0020] In use, the pressure head 10 abuts against the plate material around the weld and applies pressure. The pressure applied by the pressure head 10 is transmitted to the PLC controller through the pressure sensor, which controls the stepper motor to push the electric telescopic rod inward. If the pressure head pressure is too high, the PLC controller controls the stepper motor to rotate and retract the telescopic rod. If the pressure head pressure is too low, the PLC controller controls the stepper motor to rotate and extend the telescopic rod. Ultimately, the pressure head pressure can be maintained at the set pressure value to achieve constant pressure of the clamping device.

[0021] This invention features a clamping mechanism on the side of the laser head. This mechanism presses the area around the weld seam of the plate to be welded, ensuring the stability of the plate during welding and preventing the weld seam from shifting after welding. The clamping mechanism can automatically adjust according to the pressure set by the PLC controller. It uses a stepper motor to advance the telescopic rod, and combines the pressure value transmitted to the PLC controller by the pressure sensor to adjust the pressure of the pressure head. Ultimately, it achieves constant pressure to clamp the plate around the weld seam, resulting in a stable and aesthetically pleasing weld seam that will not shift or have insufficient penetration due to uneven clamping pressure.

[0022] In this embodiment, a guide sleeve 9 is also fixed inside the outer shell 4, and the upper part 8 of the telescopic rod passes through the inside of the guide sleeve 9 to form the outer end of the outer shell 4. During the extension and retraction of the telescopic rod 8, the guide sleeve 9 plays a guiding role, increasing the stability of the telescopic rod's extension and retraction movement.

[0023] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", 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 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. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In summary, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent variations and modifications made in accordance with the shape, structure, features and spirit described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. An adaptive clamping device for a laser welding head during travel, characterized in that: The device includes a handle (1), on the side of which a laser head (3) and a pressing mechanism are fixed. The pressing mechanism includes a housing (4), a stepper motor (5), a PLC controller (6), a pressing head (10), and a pressure sensor (11). The bottom of the housing (4) is fixed to the side of the handle (1). The stepper motor (5) is fixed inside the housing (4). The output end of the stepper motor (5) is connected to one end of the lower part (7) of the telescopic rod. The other end of the lower part (7) of the telescopic rod is connected to one end of the upper part (8) of the telescopic rod. The other end of the upper part (8) of the telescopic rod extends to the outside of the housing (4). A groove is provided at the outer end of the upper part (8) of the telescopic rod. A pressure sensor (11) is provided inside the groove. The outer end of the pressure sensor (11) is connected to the pressing head (10). A PLC controller (6) is provided on the side of the housing (4). The stepper motor (5) and the pressure sensor (11) are both electrically connected to the PLC controller (6).

2. The adaptive clamping device for a laser welding head during travel according to claim 1, characterized in that: The outer shell (4) is also fixed with a guide sleeve (9), and the upper part (8) of the telescopic rod passes through the inside of the guide sleeve (9) to set the outer end of the outer shell (4).

3. The adaptive clamping device for a laser welding head during travel according to claim 1, characterized in that: The outer shell (4) and the laser head (3) are arranged parallel to each other.

4. The adaptive clamping device for a laser welding head during travel according to claim 1, characterized in that: The handle (1) has a hand-held part (2) inside.

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