Laser welding tool for contactor

Abstract

The utility model discloses a laser welding tool for a contactor, and relates to the technical field of laser welding tools, the laser welding tool comprises a base, a fixing plate, an air cylinder and a pressing mechanism, the fixing plate is installed on the base, the air cylinder is installed on the base, and the pressing mechanism is installed at the output end of the air cylinder; when the air cylinder is in an extending state, the pressing mechanism is attached to the fixing plate, and when the air cylinder is in a contracting state, a gap is formed between the pressing mechanism and the fixing plate. The device has the advantages that the contactor component can be quickly welded, the fixing precision is improved, the efficiency in a laser welding tool is improved, the welding quality is guaranteed, manual intervention is reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of laser welding tooling, in particular to a laser welding tooling for contactors. BACKGROUND

[0002] A contactor is a widely used switch appliance, which utilizes electromagnetic, pneumatic or hydraulic principles to realize the on-off of a main circuit through a control circuit. The contactor has the advantages of strong breaking current capacity, rapid action, safe operation, frequent operation and remote control, but cannot cut off short-circuit current, so the contactor usually needs to be used in cooperation with a fuse. The main control object of the contactor is a motor, and the contactor can also be used to control other power loads, such as welding machines and electric furnaces.

[0003] At present, common welding methods for contactors include resistance welding and arc welding. Resistance welding: the heat generated by electric current melts the metal locally to form a welding point, and the equipment is simple and the cost is low, but the welding quality is greatly affected by human factors, and the welding speed is slow. Arc welding: high-temperature molten metal is obtained by arc discharge to realize welding, which has the advantages of high welding strength and wide application range, but a large amount of smoke and harmful gas is generated during the welding process, which has adverse effects on the environment and the health of workers, so precise parts are usually welded by laser welding. In the existing laser welding tooling, there are problems such as complex positioning tooling, inconvenient installation and disassembly, and inconvenient operation, which can easily reduce production efficiency and affect the welding quality. CONTENT OF THE INVENTION

[0004] In order to improve the problems of complex positioning tooling, inconvenient installation and disassembly, low production efficiency and low welding quality, the application provides a laser welding tooling for contactors.

[0005] The laser welding tooling for contactors provided by the application adopts the following technical scheme:

[0006] A laser welding tooling for contactors, comprising a base, a fixed plate, a gas cylinder and a pressing mechanism, the fixed plate is installed on the base, the gas cylinder is installed on the base, and the pressing mechanism is installed on the output end of the gas cylinder; when the gas cylinder is in an extended state, the pressing mechanism and the fixed plate are attached, and when the gas cylinder is in a retracted state, a gap is formed between the pressing mechanism and the fixed plate.

[0007] By adopting the technical scheme, the workpiece is placed at the machining position on the fixing plate, the cylinder is rotated by a certain angle along the base, the cylinder and the base are arranged at an inclined angle, the piston rod of the cylinder is lifted to push the pressing mechanism to abut against the workpiece on the fixing plate, the pressing mechanism is rotated along one side of the fixing plate, thereby welding the periphery of the workpiece, positioning and fastening during welding are achieved, the stability of the welding operation is improved, and the quality of the welded workpiece is improved; conversely, the piston rod of the cylinder is retracted to drive the pressing mechanism to rotate along one side of the fixing plate, so that the pressing mechanism releases the abutment against the fixing plate, thereby achieving automatic abutment and release during welding of the workpiece, and the convenience of the positioning tooling is improved.

[0008] Optionally, the pressing mechanism comprises a pressing jaw and a connecting frame, one end of the connecting frame is integrally formed with the pressing jaw, the other end of the connecting frame is connected to the output end of the cylinder, and the connecting frame and the fixing plate are connected through a rotating piece.

[0009] By adopting the technical scheme, the connecting frame rotates with the piston rod of the cylinder, and the pressing jaw rotates together during the rotation, and the connecting frame rotates along the axis of the rotating piece, thereby achieving abutment and release of the pressing jaw against the contactor component.

[0010] Optionally, the rotating piece comprises a support, a rotating shaft and a locking washer, the support is fixed on the fixing plate at both sides of the connecting frame, the rotating shaft penetrates the support and the connecting frame in a rotating fit, and the locking washer is installed on the end of the rotating shaft that protrudes from the support.

[0011] By adopting the technical scheme, the pressing mechanism can stably rotate around the rotating shaft, thereby achieving precise pressing and releasing of the contactor, the locking washer can effectively prevent loosening of the rotating shaft, ensure the stability of the pressing mechanism during use, and improve the welding quality and efficiency.

[0012] Optionally, the pressing jaw has an abutment part and a rotating part, the rotating part and the end face of the connecting frame are perpendicular to each other, the abutment part and the rotating part form an acute angle, and the abutment part is open-shaped.

[0013] By adopting the technical scheme, the pressing jaw can stably fix the to-be-welded component, the abutment part and the rotating part form an acute angle, which can better adapt to to-be-welded components of different shapes, improve the flexibility and stability of clamping, the open-shaped abutment part can avoid damage to the welding part, ensure the welding quality, and the perpendicularity between the rotating part and the end face of the connecting frame makes the pressing jaw more uniform under stress, further improving the stability during welding.

[0014] Optionally, the fixing plate is provided with a plurality of positioning holes, and a positioning pin is installed in each positioning hole.

[0015] By adopting the above technical scheme, the plurality of positioning holes on the fixed plate and the positioning pins installed inside can ensure accurate positioning of the parts to be welded, thereby improving welding precision and consistency and reducing quality problems caused by position deviation.

[0016] Optionally, a plurality of mounting holes are formed in the base.

[0017] By adopting the above technical scheme, the plurality of mounting holes formed in the base can facilitate fixed connection of the tooling and external equipment, improve stability and reliability of the tooling, and facilitate installation and disassembly, thereby improving work efficiency.

[0018] Optionally, a backing plate is further installed on the fixed plate, the abutting portion rotates along the rotating shaft, and the end surface of the abutting portion and the backing plate is attached.

[0019] By adopting the above technical scheme, the installation of the backing plate on the fixed plate enables the abutting portion of the pressure claw to be closely attached to the end surface of the backing plate during rotation, thereby ensuring stability and reliability of the contactor during welding. The attachment of the abutting portion to the end surface of the backing plate can effectively prevent displacement or deformation of the contactor during welding, thereby improving welding precision and quality.

[0020] Optionally, an avoiding groove is formed in the fixed plate, and the connecting frame rotates along the rotating shaft axis in the avoiding groove.

[0021] By adopting the above technical scheme, the connecting frame can avoid interference with the fixed plate during rotation due to the space of the avoiding groove.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The relative movement between the pressure mechanism driven by the air cylinder and the fixed plate realizes quick fixing and releasing of the contactor parts, improves production efficiency, and ensures stability and accuracy during welding.

[0024] 2. The pressure mechanism and the fixed plate are connected by the rotating member, so that the pressure mechanism can be flexibly adjusted in angle under the action of the air cylinder, adapt to contactor parts of different sizes and shapes, and enhance the applicability of the tooling.

[0025] 3. The design of the positioning holes and the positioning pins on the fixed plate ensures accurate positioning of the contactor parts before welding, and further improves welding quality and consistency. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0027] Figure 1 is a schematic diagram of the overall structure of the present application.

[0028] Figure 2 is a partial exploded view of the pressing mechanism of the present application.

[0029] Figure 3 is a schematic diagram of the structure of the pressing jaw of the present application.

[0030] Figure 4 is a schematic diagram of the structure of the present application from another perspective.

[0031] Reference signs: 1, base; 2, fixed plate; 3, air cylinder; 4, pressing mechanism; 41, pressing jaw; 42, connecting frame; 43, rotating part; 431, support; 432, rotating shaft; 433, locking washer; 411, abutting portion; 412, rotating portion; 5, positioning hole; 6, positioning pin; 7, mounting hole; 8, spacer plate; 9, avoiding groove. DETAILED DESCRIPTION

[0032] The following will be described in conjunction with the accompanying Figure 1 to Figure 4 The present application will be further described in detail.

[0033] The embodiments of the present application disclose a laser welding tool for contactors.

[0034] With reference to Figure 1 , including a base 1, a fixed plate 2, an air cylinder 3 and a pressing mechanism 4, the fixed plate 2 is installed on the base 1 by bolt fastening, the main function of the fixed plate 2 is to provide a support platform for the contactor components, the air cylinder 3 is installed on the base 1, the output end of the air cylinder 3 is connected with the pressing mechanism 4, the main function of the pressing mechanism 4 is to press the contactor components on the fixed plate 2 in the extended state of the air cylinder 3, to ensure the stability and accuracy of the components during the welding process. The stroke of the air cylinder 3 can be selected according to actual needs, the stroke range of the air cylinder 3 is 50 to 100 mm, to adapt to contactor components of different sizes and shapes; when the air cylinder 3 is in the extended state, the pressing mechanism 4 and the fixed plate 2 are in close contact, when the air cylinder 3 is in the retracted state, a gap is formed between the pressing mechanism 4 and the fixed plate 2, which achieves the effect of ensuring the stable fixation of the contactor components during the welding process, and avoids the welding quality problems caused by the movement of the components.

[0035] With reference to Figure 1 and Figure 2As shown, the pressing mechanism 4 includes a pressing claw 41 and a connecting frame 42. One end of the connecting frame 42 is integrally formed with the pressing claw 41. The other end of the connecting frame 42 is connected to the output end of the cylinder 3. The connecting frame 42 and the fixed plate 2 are connected by a rotating member 43. Figure 4 As shown, the rotating member 43 includes a support 431, a rotating shaft 432 and a locking washer 433. The support 431 is fixed on the fixed plate 2 on both sides of the connecting frame 42. The rotating shaft 432 passes through the support 431 and the connecting frame 42 for rotational cooperation. The locking washer 433 is installed on the end of the rotating shaft 432 that is exposed from the support 431. Figure 3 As shown, the pressing claw 41 has an abutting portion 411 and a rotating portion 412. The end faces of the rotating portion 412 and the connecting frame 42 are perpendicular to each other. The abutting portion 411 and the rotating portion 412 form an acute angle. The abutting portion 411 is open. The pressing claw 41 can tightly press the contactor component when the cylinder 3 is in the extended state, and can quickly detach from the contactor component when the cylinder 3 is in the contracted state, facilitating subsequent pick-up and placement operations.

[0036] See also Figure 2 and Figure 4 As shown, the fixing plate 2 is provided with a plurality of positioning holes 5, and a positioning pin 6 is installed in each positioning hole 5 for accurately fixing the position of the contactor component. The number and distribution of the positioning holes 5 can be changed according to the specific size and shape of the contactor component. 4 to 6 positioning holes 5 will be provided on the fixing plate 2 to ensure the stability and accuracy of the contactor component.

[0037] See also Figure 2 As shown, the base 1 is provided with a plurality of mounting holes 7 for conveniently fixing the entire tooling to the workbench. The number of mounting holes 7 can be adjusted according to actual needs. Typically, 4 to 8 mounting holes 7 are provided on the base 1 to ensure the stability and reliability of the tooling.

[0038] See also Figure 4 As shown, a pad 8 is also installed on the fixed plate 2, and the abutting portion 411 rotates along the rotating shaft 432. The abutting portion 411 and the end face of the pad 8 are in contact with each other. An avoidance groove 9 is provided on the fixed plate 2, and the connecting frame 42 rotates in the avoidance groove 9 along the axis of the rotating shaft 432. The setting of the avoidance groove 9 enables the connecting frame 42 to avoid interference with each other when rotating on the fixed plate 2. The abutting portion 411 of the pressure claw 41 and the end face of the pad 8 on the fixed plate 2 are in contact with each other. The pad 8 is used to reduce the pressure of the pressure claw 41 on the contactor component to prevent damage to the surface of the contactor component. The pad 8 can be made of soft materials, such as rubber or silicone. These materials have good cushioning and anti-slip properties and can effectively protect the surface of the contactor component. The thickness of the pad 8 can be adjusted according to actual needs. The thickness range of the pad 8 is 1 to 3 mm.

[0039] The implementation principle of the laser welding tool for the contactor is as follows: when the contactor component needs to be fixed, the contactor component is first placed on the fixing plate 2 and preliminarily fixed through the positioning pin 6 in the positioning hole 5, then the air cylinder 3 is started, the output end of the air cylinder 3 is extended, the pressing mechanism 4 is driven to move downward, and the pressing claw 41 tightly presses the contactor component under the action of the air cylinder 3, so that the movement of the contactor component in the welding process is ensured. When the welding is completed, the output end of the air cylinder 3 is retracted, the pressing claw 41 is lifted, and the contactor component can be easily taken out, which not only improves the fixing accuracy of the contactor component, but also greatly improves the production efficiency and product quality, reduces manual intervention, and reduces the production cost.

[0040] Unless otherwise defined, technical terms or scientific terms used in the present application shall be understood as commonly understood by one of ordinary skill in the art to which the present application belongs. The "first", "second", "third" and the like used in the specification and claims of the present application do not represent any order, number or importance, but are only used to distinguish different components. "One" or "a" and the like do not represent a quantity limit, but represent the existence of at least one. "Including" or "containing" and the like mean that the elements or objects appearing before "including" or "containing" cover the elements or objects listed after "including" or "containing" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A laser welding tool for contactors, characterized by: The invention comprises a base (1), a fixed plate (2), a cylinder (3) and a pressing mechanism (4); the fixed plate (2) is mounted on the base (1), the cylinder (3) is mounted on the base (1), and the pressing mechanism (4) is mounted on the output end of the cylinder (3); when the cylinder (3) is in an extended state, the pressing mechanism (4) and the fixed plate (2) are in contact with each other; when the cylinder (3) is in a contracted state, a gap is formed between the pressing mechanism (4) and the fixed plate (2).

2. The laser welding tool for contactors according to claim 1, characterized in that: The pressing mechanism (4) comprises a pressing claw (41) and a connecting frame (42), one end of the connecting frame (42) and the pressing claw (41) are integrally formed, the other end of the connecting frame (42) is connected to the output end of the cylinder (3), and the connecting frame (42) and the fixed plate (2) are connected via a rotating member (43).

3. The laser welding tool for contactors according to claim 2, characterized in that: The rotating member (43) includes a support (431), a rotating shaft (432) and a locking washer (433). The support (431) is located on both sides of the connecting frame (42). The support (431) is fixed on the fixed plate (2). The rotating shaft (432) passes through the support (431) and the connecting frame (42) for rotational cooperation. The locking washer (433) is installed on the end of the rotating shaft (432) that protrudes from the support (431).

4. The laser welding tool for contactors according to claim 3, characterized in that: The pressing claw (41) has an abutting portion (411) and a rotating portion (412). The end faces of the rotating portion (412) and the connecting frame (42) are perpendicular to each other. The abutting portion (411) and the rotating portion (412) form an acute angle. The abutting portion (411) is open.

5. The laser welding tool for contactors according to claim 1, characterized in that: The fixing plate (2) is provided with a plurality of positioning holes (5), and a positioning pin (6) is installed in each positioning hole (5).

6. The laser welding tool for contactors according to claim 1, characterized in that: The base (1) is provided with a plurality of mounting holes (7).

7. The laser welding tool for contactors according to claim 4, characterized in that: A pad (8) is also mounted on the fixed plate (2), and the abutment portion (411) rotates along the rotating shaft (432), with the end faces of the abutment portion (411) and the pad (8) being in contact with each other.

8. The laser welding tool for contactors according to claim 3, characterized in that: The fixing plate (2) is provided with an avoidance groove (9), and the connecting frame (42) rotates in the avoidance groove (9) along the axis of the rotating shaft (432).

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