Partitioned force application electromagnetic driving device for laser welding

Abstract

The utility model discloses a subarea force application electromagnetic driving device for laser welding, which comprises a cylinder body, a piston electromagnet arranged in the cylinder body and a fixed electromagnet arranged opposite to the piston electromagnet, and an induction coil on the piston electromagnet and an induction coil on the fixed electromagnet respectively penetrate through the cylinder body through coils and are connected with a power supply. Therefore, the piston rod of the piston electromagnet is driven to do telescopic motion by homopolar repulsion and heteropolar attraction. Compared with an existing air cylinder driving clamping device, the electromagnetic driving device does not need auxiliary devices such as compressed air and matched pipeline valves, integrated design can be formed according to welding places so as to apply force in a partitioned mode, driving force of different magnitudes can be applied to the electromagnetic driving devices at different set positions, and the welding efficiency is improved. Independent regulation and control when an air cylinder is adopted for driving are avoided; and compared with an air cylinder device, the size is small, large driving force can be provided, and stability is higher.

Description

Technical Field

[0001] The utility model belongs to the field of driving devices, and in particular relates to a partitioned force-applying electromagnetic driving device for laser welding. Background Art

[0002] Welding, also known as melting or fusion welding, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials (such as plastics). Laser welding, as a type of welding, is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. That is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool.

[0003] Regardless of whether laser welding or other welding methods are used, stable clamping of the workpiece to be welded is one of the basic conditions that must be met first during the welding process. Especially for large workpieces to be welded, such as the welding of battery box packaging or the welding of car bodies, clamping assemblies are required to clamp and position different stamping parts, so as to facilitate welding. The driving assembly used by the existing clamping assembly is mainly a cylinder. When welding large workpieces, multiple cylinders are required to provide driving force for different parts. And the driving force required is different for different parts. In this regard, it is necessary to use solenoid valves to regulate each cylinder, or to use cylinders of different specifications to provide different driving forces, which is not only cumbersome, but also cannot realize an integrated process. Especially for the welding of thin plates or workpieces with uneven thickness, it is necessary to provide regional and uneven clamping forces. The use of traditional cylinder drives requires extremely complex supporting pipelines and auxiliary device designs.

[0004] Based on this, compared with the existing cylinder driving device, there is an urgent need for a driving device that can achieve controllable driving force through an integrated process, has strong stability, and can provide a large driving force. Utility Model Content

[0005] Purpose of the utility model: The technical problem to be solved by the utility model is to provide an electromagnetic drive device for laser welding that can realize the application of driving forces of different sizes in different zones under working conditions without a gas source, and has strong stability and large driving force.

[0006] Technical solution: The utility model discloses a zoned force electromagnetic drive device for laser welding, comprising a cylinder body, a piston electromagnet arranged in the cylinder body, and a fixed electromagnet arranged opposite to the piston electromagnet. The induction coil on the piston electromagnet and the induction coil on the fixed electromagnet are respectively connected to a power source through coils passing through the cylinder body, so as to realize the telescopic movement of the piston rod of the piston electromagnet driven by the same poles repelling each other and the opposite poles attracting each other.

[0007] Furthermore, the electromagnetic drive device also includes a magnetic induction switch arranged on the cylinder body to monitor and provide feedback on the movement position of the piston electromagnet.

[0008] Furthermore, the electromagnetic drive device has two groups of magnetic induction switches, which are respectively located at the extreme position of the piston electromagnet on the cylinder body where the piston electromagnet repels the fixed electromagnet with the same poles, and at the extreme position of the piston electromagnet where the fixed electromagnet attracts the piston electromagnet with opposite poles.

[0009] Furthermore, the magnetic induction switch of the electromagnetic drive device is movably arranged on the cylinder body through a connecting rod.

[0010] Furthermore, the magnetic induction switch of the electromagnetic drive device is movably arranged on the connecting rod through a connecting plate and a nut. Preferably, the connecting plate is S-shaped, and grooves connected to the connecting rod and the magnetic induction switch are respectively formed at both ends of the opposite side surfaces.

[0011] Furthermore, the magnetic induction switch of the electromagnetic drive device is connected to the connection plate through a connection block matching the groove provided on the S-shaped connection plate.

[0012] Furthermore, the other end of the piston rod of the piston electromagnet of the electromagnetic drive device is connected to the clamping assembly through a connecting piece, thereby driving the clamping assembly to clamp.

[0013] Beneficial effect: Compared with the prior art, the advantages of the utility model are: compared with the existing cylinder, the electromagnetic drive device for welding can form an integrated design according to the welding site to apply force in different areas, and can implement different driving forces for electromagnetic drive devices at different set positions, avoiding the need to independently regulate the cylinder when using a cylinder or hydraulic cylinder to drive; and compared with the cylinder, it is not only small in size, but can also provide a larger driving force and has strong stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the electromagnetic drive device of the utility model;

[0015] Figure 2 The schematic diagram of the structure of the S-shaped connecting plate of the utility model. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] The electromagnetic drive device of the utility model can be used for the zoned force application in the laser welding process, and then the electromagnetic drive device and the clamping device are used to clamp different parts of the workpiece to be welded to achieve different clamping forces. Figure 1As shown, the electromagnetic drive device includes a cylinder body 1, a piston electromagnet 2 and a fixed electromagnet 3 respectively arranged in the cylinder body 1, and the piston electromagnet 2 and the fixed electromagnet 3 are arranged opposite to each other, and then the piston electromagnet 2 and the fixed electromagnet 3 are changed by changing the current direction to achieve the effect of the same poles repelling each other and the opposite poles attracting each other, thereby driving the piston rod of the piston electromagnet 2 to telescopic movement. The piston electromagnet 2 and the fixed electromagnet 3 are both provided with induction coils, and the induction coils of the two are respectively connected to different power supplies through coils 4 to apply different or same current directions.

[0018] like Figure 1 As shown, the cylinder body 1 of the electromagnetic drive device is also provided with two groups of magnetic induction switches 5 for monitoring and feeding back the moving position of the piston electromagnet 2, and the fixed electromagnet 3 is fixedly arranged in the cylinder body 1 and does not move. The position setting of the two groups of magnetic induction switches 5 is determined according to the two extreme positions of the piston electromagnet 2, that is, the position at the lower end of the cylinder body 1 is determined by the extreme position of the piston electromagnet 3 where the piston electromagnet 2 and the fixed electromagnet 3 have opposite poles and attract each other; the position at the upper end of the cylinder body 1 is determined by the extreme position of the piston electromagnet 2 where the piston electromagnet 2 and the fixed electromagnet 3 have the same poles and repel each other.

[0019] The magnetic induction switch 5 is fixed by a connecting rod 6 provided on the cylinder body 1 and an S-shaped connecting plate 7. The connecting rod 6 is fixed on the cylinder body 1 by bolts. The two ends of the S-shaped connecting plate 7 are respectively provided with grooves, such as Figure 2 As shown, the groove on one side is snap-connected with the connecting rod 6, and the S-shaped connecting plate 7 is further fixedly connected to the connecting rod 6 by bolts. A groove is provided at the other end of the S-shaped connecting plate 7 to facilitate the connection and fixation of the magnetic induction switch 5. The magnetic induction switch 5 is fixedly connected to the S-shaped connecting plate 7 by a connecting block 8 matching the groove, and the connection is further strengthened and stabilized by bolts.

[0020] When the electromagnetic drive device of the utility model is used for laser welding, the workpiece can be clamped without a gas source, and the electromagnetic drive device can be respectively set at different parts of the workpiece to be welded that need to be clamped, and the electromagnetic drive device can be integrated and controlled through the circuit board, which improves the convenience of the process. Through this integrated control, different sizes of driving force can be provided according to different parts to provide different sizes of clamping force, which is more applicable and convenient, and can achieve stepless adjustment and strong stability. Compared with the cylinder assembly, it is not only small in size, but also provides a greater driving force.

Claims

1. A zoned force-applying electromagnetic driving device for laser welding, characterized in that: The electromagnetic drive device comprises a cylinder body (1), a piston electromagnet (2) arranged in the cylinder body (1), and a fixed electromagnet (3) arranged opposite to the piston electromagnet (2); the induction coil on the piston electromagnet (2) and the induction coil on the fixed electromagnet are respectively connected to a power source through a coil (4) penetrating the cylinder body, so as to realize the telescopic movement of the piston rod of the piston electromagnet (2) driven by the same poles repelling each other and the opposite poles attracting each other.

2. The electromagnetic driving device for laser welding according to claim 1 is characterized in that: The electromagnetic drive device also includes a magnetic induction switch (5) arranged on the cylinder body (1) for monitoring and feeding back the moving position of the piston electromagnet (2).

3. The electromagnetic driving device for laser welding according to claim 2, characterized in that: The magnetic induction switch (5) is provided with two groups, which are respectively located at the extreme position of the piston electromagnet (2) on the cylinder body (1) where the piston electromagnet (2) and the fixed electromagnet (3) have the same poles and repel each other, and at the extreme position of the piston electromagnet (2) where the piston electromagnet and the fixed electromagnet (3) have opposite poles and attract each other.

4. The electromagnetic driving device for laser welding according to claim 2, characterized in that: The magnetic induction switch (5) is movably arranged on the cylinder body (1) via a connecting rod (6).

5. The electromagnetic driving device for laser welding according to claim 4 is characterized in that: The magnetic induction switch (5) is movably arranged on the connecting rod (6) via a connecting plate (7) and a nut.

6. The electromagnetic driving device for laser welding according to claim 5, characterized in that: The connecting plate (7) is S-shaped, and grooves connected to the connecting rod (6) and the magnetic induction switch (5) are respectively provided at the two ends of the opposite side surfaces.

7. The electromagnetic driving device for laser welding according to claim 5, characterized in that: The magnetic induction switch (5) is connected to the connecting plate (7) via a connecting block (8) matching the groove.

8. The electromagnetic driving device for laser welding according to claim 1, characterized in that: The other end of the piston rod of the piston electromagnet (2) is connected to the clamping assembly via a connecting piece, thereby driving the clamping assembly to clamp.

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