Welding positioning device for moving contact assembly of contactor

Abstract

A contactor moving contact assembly welding positioning device comprises a base, and the base is provided with a first positioning mechanism used for installing a contact bridge and a second positioning mechanism used for welding contacts on the contact bridge. The first positioning mechanism comprises a first positioning block which is fixedly arranged on the base and is used for fixing the contact bridge; the second positioning mechanism comprises second positioning blocks symmetrically arranged on the base in a sliding mode. The second positioning blocks are provided with positioning pins used for clamping contact points of the contact bridge. And an upper electrode and a lower electrode for welding are arranged on the upper side and the lower side of the contact bridge. The first positioning mechanism and the second positioning mechanism are used for carrying out high-quality auxiliary positioning welding on the contact bridge and the contact, the welding positioning precision is high, the dimensional tolerance range value of the symmetry degree, the center distance and the like of the welded contact is smaller than or equal to 0.1 mm, the welding size requirement is met, meanwhile, a gap smaller than or equal to 0.07 mm is formed between a positioning step of the contact bridge and the contact after welding, and the welding quality is improved. And the product quality and the welding efficiency are improved.

Description

Technical Field

[0001] The utility model relates to a welding positioning device for a moving contact component of a contactor, belonging to the technical field of welding of contact components in the electrical industry. Background Art

[0002] The contact is the bridge and heart of the operation of the contactor. To a great extent, the welding quality determines the service life of the switch, and the most basic dimensions are also particularly important for the use of the contact. Usually, for the welding of such contacts, conventional tooling fixtures are used for positioning. In the welding of traditional such products, the fixture positions the left and right of the contact, and the front and back of the contact are positioned by the copper part steps of the contact bridge. The gap between the contact and the steps is not easy to control. For products with strict requirements for this dimension, the qualified rate is very low, which is not conducive to the mass production of products. According to the requirements of the product, it is necessary to optimize the tooling fixture to meet the characteristics of the product. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the disadvantages and deficiencies existing in the prior art, and to provide a welding positioning device for a static component of a contactor.

[0004] A welding positioning device for a moving contact component of a contactor includes a base. A first positioning mechanism for installing a contact bridge and a second positioning mechanism for welding contacts on the contact bridge are provided on the base. The first positioning mechanism includes a first positioning block fixedly arranged on the base for fixing the contact bridge. The second positioning mechanism includes second positioning blocks symmetrically and slidably arranged on the base. Positioning pins for clamping the contacts of the contact bridge are provided on the second positioning blocks. Upper and lower electrodes for welding are arranged on the upper and lower sides of the contact bridge. Through the first positioning mechanism and the second positioning mechanism, high-quality auxiliary positioning welding of the contact bridge and the contacts is carried out. The welding positioning accuracy is high, and the dimensional tolerance ranges such as the symmetry and center distance of the contacts after welding are ≤ 0.1 mm, meeting the welding dimension requirements. At the same time, the gap between the positioning step of the contact bridge and the contacts after welding is ≤ 0.07 mm, improving the product quality and welding efficiency. Through the automatic positioning and clamping mechanism, the steps and time of manual operation are reduced, the production process is accelerated, and the production efficiency is improved. The consistency and accuracy of the automatic operation also reduce the fluctuation of product quality and ensure the consistency of production.

[0005] Preferably, the second positioning mechanism further includes a cylinder fixedly arranged on the base. The cylinder is connected with a connecting block. The end of the connecting block is provided with movable connecting pieces respectively extending to both sides of the base. The end of the movable connecting piece is connected with the second positioning block, and is used to drive the second positioning block to slide on the base to adjust the position of the clamped contact bridge. The cylinder, as a driving element, can provide stable power output. Through the linkage of the connecting block, the movable connecting piece and the second positioning block, the precise movement of the second positioning block is realized. This design enables fine adjustment according to the size and position of the contact bridge when clamping the contact bridge, ensures that the contact bridge is accurately positioned, and improves the assembly accuracy.

[0006] Furthermore, a first groove is provided on the second positioning block. A positioning connecting piece is fixed in the first groove. A second groove is provided on the positioning connecting piece, and the positioning pin is fixedly installed in the second groove. The design of the first groove and the positioning connecting piece enables the positioning connecting piece to be firmly fixed on the second positioning block, thereby improving the stability of the entire positioning mechanism. This design reduces the positioning instability caused by mechanical vibration or thermal expansion and contraction during the welding process, and ensures that the contact points of the contact bridge are stably and accurately positioned. The existence of the second groove enables the position and direction of the positioning pin to be precisely controlled. The positioning pin is the component that directly contacts and clamps the contact points of the contact bridge. Its precise installation ensures that the contact points can be accurately aligned with the welding position, thereby improving the welding accuracy and quality, and ensuring the consistency of the moving position of the contact point positioning block each time.

[0007] Preferably, the positioning pin is provided with a positioning step for cooperating with the contact bridge and the contact point for positioning. The positioning step ensures that the contact point can be accurately aligned with the predetermined position during assembly, making the contact between the contact point and the contact bridge more precise. The positioning step helps to maintain the stability of its position during the contact point welding process, ensures the correct relative position between the contact point and the contact bridge during welding, is beneficial to optimizing the welding process parameters, improving the welding quality, and reducing welding defects.

[0008] Preferably, a fixing block is provided on the outer side of the second positioning block. A positioning bolt is adjustably arranged on the fixing block. The positioning bolt is horizontally arranged and is used to abut against the outer wall of the second positioning hole to limit its moving action. The abutment of the positioning bolt against the outer wall of the second positioning hole ensures the precise position of the second positioning block on the base, avoids movement or deviation during the welding process, thereby ensuring the precise alignment of the contact points of the contact bridge and improving the welding accuracy. By adjusting the position of the positioning bolt, fine adjustment of the position of the second positioning block can be realized to adapt to contact bridges of different sizes or shapes, and it is convenient to adjust the symmetry of the contact points.

[0009] Furthermore, the cylinder is connected to a solenoid valve, and the solenoid valve is connected to a foot switch for controlling the opening and closing of the solenoid valve. As the controller of the pneumatic system, the solenoid valve can achieve precise control of the cylinder's movement. By triggering the opening and closing of the solenoid valve through the foot switch, precise control over the extension, retraction, or stop of the cylinder can be achieved, ensuring the stability of the production process, reducing operation errors, and improving product quality.

[0010] Preferably, a slide rail is provided on the base, and the second positioning block is slidably mounted on the slide rail. Guided by the slide rail, the second positioning block can achieve precise and stable movement, ensuring the precise alignment of the bridge contacts during the assembly process. The slide rail design enables the second positioning block to quickly locate to the preset position, adapting to different sizes or types of bridge contacts.

[0011] Preferably, a profiling cavity matching the shape of the tail of the bridge is provided inside the first positioning block for fixedly installing the position of the bridge. The profiling cavity can precisely match the shape of the tail of the bridge, ensuring that the bridge is in an ideal position during installation, thereby improving the alignment and assembly accuracy between the bridge and other components. The bridge can find its precise position in the profiling cavity, reducing the need for manual adjustment, simplifying the assembly process, and improving production efficiency.

[0012] Furthermore, positioning holes are provided on the bridge, and positioning pins matching the positioning holes are provided in the profiling cavity for positioning and installing the bridge. The cooperation between the positioning holes and the positioning pins ensures the precise installation position of the bridge in the first positioning block, avoiding offsets caused by manual installation, and improving the installation accuracy and consistency of the bridge. Through the pre-positioning method, the adjustment work during the installation of the bridge is reduced, making the operation process simpler and more efficient.

[0013] Preferably, the welding surface of the upper electrode is provided with a profiling setting matching the shape of the contact, and the welding surface of the lower electrode is provided with a profiling setting matching the shape of the bridge. This enables the upper and lower electrodes to be precisely aligned with the contact and the bridge, ensuring the stability and reliability of the welding process, reducing phenomena such as uneven heat distribution and false soldering that may occur during the welding process, and thus improving the welding quality. Part of the lower electrode is flush with the bridge in the height direction, reducing the deformation of the bridge under pressure and high temperature during welding, which is beneficial to ensuring a gap of ≤0.07 mm between the positioning step of the bridge and the contact.

[0014] The beneficial effects of the present utility model are as follows: Through the first positioning mechanism and the second positioning mechanism, high-quality auxiliary positioning welding is carried out on the contact bridge and the contact point. The welding positioning accuracy is high, and the dimensional tolerance range values such as the symmetry and center distance of the contact point after welding are ≤ 0.1 mm, meeting the welding dimension requirements. At the same time, it also meets the requirement that there is a gap of ≤ 0.07 mm between the positioning step of the contact bridge and the contact point after welding, improving the product quality and welding efficiency. Through the automatic positioning and clamping mechanism, the steps and time of manual operation are reduced, the production process is accelerated, and the production efficiency is improved. The consistency and accuracy of automatic operation also reduce the fluctuation of product quality and ensure the consistency of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present utility model.

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the present utility model with the contact bridge removed;

[0018] Figure 3 is Figure 2 a detailed enlarged view of part A in

[0019] Figure 4 is a structural schematic diagram of the lower electrode and the contact bridge

[0020] Figure 5 is a structural schematic diagram of the contact bridge;

[0021] In the figure, 1. Base; 11. Slide rail; 2. Contact bridge; 21. Positioning hole; 22. Positioning pin; 23. Contact point; 3. Upper electrode; 4. Lower electrode; 5. First positioning mechanism; 51. First positioning block; 52. Profiled cavity; 6. Second positioning mechanism; 61. Second positioning block; 611. First groove; 612. Positioning connecting piece; 613. Second groove; 614. Positioning needle; 615. Positioning step; 62. Cylinder; 621. Connecting block; 622. Movable connecting piece; 63. Fixed block; 631. Positioning bolt; 64. Solenoid valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will further describe the present utility model in detail with reference to the drawings.

[0023] AsFigures 1-5 As shown in the figure, this is an embodiment of a welding positioning device for a moving contact component of a contactor. It includes a base 1, on which a first positioning mechanism 5 for installing a contact bridge 2 and a second positioning mechanism 6 for welding contacts 23 on the contact bridge 2 are provided. The first positioning mechanism 5 includes a first positioning block 51 fixedly arranged on the base 1 for fixing the contact bridge 2. The second positioning mechanism 6 includes second positioning blocks 61 symmetrically and slidably arranged on the base 1, and positioning pins 614 for clamping the contacts 23 of the contact bridge 2 are provided on the second positioning blocks 61. Upper electrodes 3 and lower electrodes 4 for welding are arranged on both the upper and lower sides of the contact bridge 2. Through the first positioning mechanism 5 and the second positioning mechanism 6, high-quality auxiliary positioning welding of the contact bridge 2 and the contacts 23 is carried out. The welding positioning accuracy is high, and the dimensional tolerance ranges such as the symmetry and center distance of the contacts 23 after welding are ≤0.1 mm, meeting the welding dimension requirements. At the same time, it also meets the requirement that there is a gap of ≤0.07 mm between the positioning step 615 of the contact bridge 2 and the contacts 23 after welding, improving the product quality and welding efficiency. Through the automatic positioning and clamping mechanism, the steps and time of manual operation are reduced, the production process is accelerated, and the production efficiency is improved. The consistency and accuracy of automatic operation also reduce the fluctuation of product quality and ensure the consistency of production.

[0024] Preferably, the second positioning mechanism 6 further includes a cylinder 62 fixedly arranged on the base 1. The cylinder 62 is connected with a connecting block 621. An end of the connecting block 621 is provided with movable connecting pieces 622 respectively extending to both sides of the base 1. The ends of the movable connecting pieces 622 are connected with the second positioning blocks 61 and are used to drive the second positioning blocks 61 to slide on the base 1 to adjust the position of clamping the contact bridge 2. The cylinder 62, as a driving element, can provide stable power output. Through the linkage of the connecting block 621, the movable connecting pieces 622 and the second positioning blocks 61, the precise movement of the second positioning blocks 61 is realized. This design enables fine adjustment according to the size and position of the contact bridge 2 when clamping the contact bridge 2, ensuring that the contact bridge 2 is accurately positioned and improving the assembly accuracy.

[0025] ​Further, a first groove 611 is provided on the second positioning block 61. A positioning connection piece 612 is fixed in the first groove 611. A second groove 613 is provided on the positioning connection piece 612, and a positioning pin 614 is fixedly installed in the second groove 613. The design of the first groove 611 and the positioning connection piece 612 enables the positioning connection piece 612 to be firmly fixed on the second positioning block 61, thereby improving the stability of the entire positioning mechanism. This design reduces the positioning instability caused by mechanical vibration or thermal expansion and contraction during the welding process, ensuring that the contact point 23 of the contact bridge 2 is stably and accurately positioned. The presence of the second groove 613 enables precise control of the position and direction of the positioning pin 614. The positioning pin 614 is the component that directly contacts and clamps the contact point 23 of the contact bridge 2. Its precise installation ensures that the contact point 23 can accurately align with the welding position, thereby improving the welding accuracy and quality and ensuring the consistency of the moving position of the contact point 23 positioning block each time.

[0026] A positioning step 615 for cooperating with the contact bridge 2 and the contact point 23 is provided on the positioning pin 614. The positioning step 615 ensures that the contact point 23 can accurately align with the predetermined position during assembly, making the contact between the contact point 23 and the contact bridge 2 more precise. The positioning step 615 helps to maintain the stability of the position of the contact point 23 during the welding process of the contact point 23, ensuring the correct relative position between the contact point 23 and the contact bridge 2 during welding, which is beneficial to optimizing the welding process parameters, improving the welding quality, and reducing welding defects.

[0027] A fixing block 63 is provided outside the second positioning block 61. A positioning bolt 631 is adjustably provided on the fixing block 63. The positioning bolt 631 is horizontally arranged and is used to abut against the outer wall of the second positioning hole 21 to limit its moving action. The abutment of the positioning bolt 631 against the outer wall of the second positioning hole 21 ensures the precise position of the second positioning block 61 on the base 1, avoiding movement or deviation during the welding process, thereby ensuring the precise alignment of the contact point 23 of the contact bridge 2 and improving the welding accuracy. By adjusting the position of the positioning bolt 631, fine adjustment of the position of the second positioning block 61 can be achieved to adapt to contact bridges 2 with different sizes or shapes of contact points 23, facilitating the adjustment of the symmetry of the contact point 23.

[0028] The air cylinder 62 is connected to a solenoid valve 64, and the solenoid valve 64 is connected to a foot switch. The foot switch is used to control the opening and closing of the solenoid valve 64. The solenoid valve 64, as the controller of the pneumatic system, can achieve precise control of the action of the air cylinder 62. By triggering the opening and closing of the solenoid valve 64 through the foot switch, precise control of the telescopic or stopping of the air cylinder 62 can be achieved, ensuring the stability of the production process, reducing operation errors, and improving product quality.

[0029] The base 1 is provided with a slide rail 11, and the second positioning block 61 is slidably mounted on the slide rail 11. Guided by the slide rail 11, the second positioning block 61 can achieve precise and stable movement, ensuring the precise alignment of the contact 23 of the contact bridge 2 during the assembly process. The design of the slide rail 11 enables the second positioning block 61 to quickly locate to a preset position, adapting to contact bridges 2 of different sizes or types with their contacts 23.

[0030] The first positioning block 51 is provided with a profiling cavity 52 that matches the outer shape of the tail of the contact bridge 2, and the profiling cavity 52 is used to fixedly install the contact bridge 2. The profiling cavity 52 can precisely match the shape of the tail of the contact bridge 2, ensuring that the contact bridge 2 is in an ideal position during installation, thereby improving the alignment and assembly accuracy between the contact bridge 2 and other components. The contact bridge 2 can find its precise position in the profiling cavity 52, reducing the need for manual adjustment, simplifying the assembly process, and improving production efficiency.

[0031] The contact bridge 2 is provided with a positioning hole 21, and the profiling cavity 52 is provided with a positioning pin 22 that matches the positioning hole 21 for installing the contact bridge 2. The cooperation between the positioning hole 21 and the positioning pin 22 ensures the precise installation position of the contact bridge 2 in the first positioning block 51, avoiding offsets caused by manual installation, and improving the installation accuracy and consistency of the contact bridge 2. By means of pre-positioning, the adjustment work during the installation of the contact bridge 2 is reduced, making the operation process simpler and more efficient.

[0032] The welding surface of the upper electrode 3 is provided with a profiling setting that matches the outer shape of the contact 23, and the welding surface of the lower electrode 4 is provided with a profiling setting that matches the outer shape of the contact bridge 2. This enables the upper electrode 3 and the lower electrode 4 to be precisely aligned with the contact 23 and the contact bridge 2, ensuring the stability and reliability of the welding process, reducing phenomena such as uneven heat distribution and false soldering that may occur during the welding process, and thus improving the welding quality. Part of the lower electrode 4 is flush with the contact bridge 2 in the height direction, reducing the deformation of the contact bridge 2 under pressure and high temperature during welding, which is beneficial for ensuring a gap of ≤0.07 mm between the positioning step 615 of the contact bridge 2 and the contact 23.

[0033] The whole set of devices can be linked with a manual welding device. By controlling the solenoid valve 64 through a foot switch, it realizes the combination of hands and feet, improving the welding quality and efficiency of the product.

[0034] During use, welding is carried out through the following steps:

[0035] (1) Material preparation before welding:

[0036] a) The moving contact bridge 2 is subjected to silver plating treatment;

[0037] b) The contact 23 uses AgWC;

[0038] (2) Pre-welding positioning:

[0039] a) Place the moving contact bridge 2 on the first positioning block 51.

[0040] b) Step on the left foot switch of the control tooling with one foot, the air cylinder 62 moves, and the second positioning mechanism 6 moves into place; c) Manually place the contact 23 between the positioning pin 614 and the positioning step 615 of the contact bridge 2.

[0041] d) Step on the right foot switch for controlling the movement of the electrode with the other foot, the lower electrode 4 presses down, through the induction of the magnetic switch, the tooling positioning clamp moves, releases the contact 23, and moves to the initial position.

[0042] (3) Perform welding:

[0043] a) Start the welding power supply, heat the workpiece under the set welding parameters such as welding current and welding time to complete the welding of the contactor assembly.

[0044] b) After welding is completed, take out the welded moving contactor assembly, and repeat the above steps.

[0045] The above-disclosed are only the preferred embodiments of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A welding positioning device for a moving contact component of a contactor, characterized in that: It includes a base, on which there is a first positioning mechanism for installing a contact bridge and a second positioning mechanism for welding contacts on the contact bridge; The first positioning mechanism includes a first positioning block fixedly arranged on the base for fixing the contact bridge; The second positioning mechanism includes second positioning blocks symmetrically and slidably arranged on the base, and positioning pins for clamping the contacts of the contact bridge are arranged on the second positioning blocks; Upper and lower electrodes for welding are arranged on the upper and lower sides of the contact bridge.

2. The welding positioning device for the moving contact component of the contactor according to claim 1, characterized in that: The second positioning mechanism further includes a cylinder fixedly arranged on the base. The cylinder is connected with a connecting block, and movable connecting pieces respectively extending to both sides of the base are arranged at the end of the connecting block. The end of the movable connecting piece is connected with the second positioning block for driving the second positioning block to slide on the base to adjust the position of clamping the contact bridge.

3. The welding positioning device for the moving contact component of the contactor according to claim 2, characterized in that: A first groove is arranged on the second positioning block, a positioning connecting piece is fixed in the first groove, a second groove is arranged on the positioning connecting piece, and the positioning pin is fixedly installed in the second groove.

4. The welding positioning device for the moving contact component of the contactor according to claim 1 or 3, characterized in that: A positioning step for cooperating with the contact bridge and the contact for positioning is arranged on the positioning pin.

5. The welding and positioning device for the moving contact component of the contactor according to claim 1 or 2, characterized in that: A fixing block is arranged on the outer side of the second positioning block, and a positioning bolt is adjustably arranged on the fixing block. The positioning bolt is horizontally arranged and is used for abutting against the outer wall of the second positioning hole to limit its moving action.

6. The welding positioning device for the moving contact component of the contactor according to claim 2, wherein: The cylinder is connected with a solenoid valve, and the solenoid valve is connected with a foot switch for controlling the opening and closing of the solenoid valve.

7. The welding positioning device for the moving contact component of the contactor according to claim 1, characterized in that: A slide rail is arranged on the base, and the second positioning block is slidably installed on the slide rail.

8. The welding positioning device for the moving contact component of the contactor according to claim 1, wherein: A profiling cavity matching the shape of the tail of the contact bridge is arranged in the first positioning block, and the profiling cavity is used for fixedly installing the position of the contact bridge.

9. The welding positioning device for the moving contact component of the contactor according to claim 8, characterized in that: A positioning hole is arranged on the contact bridge, and a positioning pin for matching and positioning the installation of the contact bridge is arranged in the profiling cavity.

10. The welding positioning device for the moving contact component of the contactor according to claim 1, wherein: The welding surface of the upper electrode is arranged in a profiling shape matching the shape of the contact, and the welding surface of the lower electrode is arranged in a profiling shape matching the shape of the contact bridge.

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