A static contact adaptive welding fixture

Abstract

This utility model discloses an adaptive welding fixture for stationary contacts, including a welding chamber and a welding device. A rotating platform is installed on the inner bottom of the welding chamber, and a placement auxiliary mechanism is provided on the outer side of the rotating platform. The placement auxiliary mechanism includes a placement frame fixedly connected to the outer side of the rotating platform. The upper end of the placement frame has a placement slot, and a support frame is fixedly connected to the front side of the upper end of the placement frame near the placement slot. An adjustment rod is movably connected to the inner side of the support frame. In this adaptive welding fixture for stationary contacts, when the lower pressure head is rotated upwards, the spring plate undergoes elastic deformation and stores potential energy. After the stationary contact element is placed into the placement slot, the restoring force of the spring plate drives the lower pressure head to rotate downwards. The rotation angle is adaptively adjusted according to the thickness of the element. When the element thickness increases, the spring plate compression increases, resulting in a stronger rotation torque; when the thickness decreases, the rotation torque weakens accordingly, thus achieving adaptive clamping of the stationary contact element.

Description

Technical Field

[0001] This utility model relates to the field of stationary contact welding technology, and in particular to an adaptive welding fixture for stationary contacts. Background Technology

[0002] Molded case circuit breakers are important control and protection electrical appliances in low-voltage power distribution networks. In molded case circuit breakers, the stationary contact is not only an important device for interrupting short-circuit current, but also an important port for connecting the circuit breaker to the main circuit incoming line. There are various styles of stationary contacts, but they are generally composed of stationary contact plates and stationary contact points, with the stationary contact points welded to the stationary contact plates.

[0003] Traditional stationary contact welding fixtures have some drawbacks. During the stationary contact welding process, stationary contact components of different shapes and thicknesses need to be welded together. Before welding, workers need to manually adjust the clamping amount of the fixture to accommodate different components, which leads to cumbersome operation steps and reduced production efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a static contact adaptive welding fixture, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A static contact adaptive welding fixture includes a welding chamber and a welding device. A rotating platform is installed on the bottom inner side of the welding chamber, and a placement auxiliary mechanism is provided on the outer side of the rotating platform. The placement auxiliary mechanism includes a placement frame fixedly connected to the outer side of the rotating platform. A placement groove is opened at the upper end of the placement frame. A support frame is fixedly connected to the front side of the upper end of the placement frame near the placement groove. An adjusting rod is movably connected to the inner side of the support frame. A rotating shaft is fixedly connected inside the adjusting rod. A pressing head is fixedly connected to the rear end of the adjusting rod. A sliding groove is opened at one end of the adjusting rod. A docking frame is movably connected to the outer side of the adjusting rod near the front side of the support frame. A limit rod is slidably connected to the inner side of the sliding groove. A connecting block is fixedly connected to the lower end of the docking frame, and a spring plate is fixedly connected to the lower end of the connecting block.

[0007] Preferably, the lower end of the placement rack is fixedly connected to a mounting base, and there are multiple sets of placement racks.

[0008] Preferably, the rotating shaft extends into the interior of the support frame, and the rotating shaft is movably connected to the support frame. The shape of the pressing head is L-shaped, and the pressing head is located above the placement slot.

[0009] Preferably, the limiting rod extends into the interior of the docking frame, and the limiting rod is fixedly connected to the docking frame. The spring plate is arc-shaped and is installed inside the mounting base.

[0010] Preferably, the welding device is installed on the inner bottom of the welding chamber near the rotating table, and a storage chamber is fixedly connected to the lower end of the welding chamber.

[0011] Preferably, the lower end of the storage compartment is fixedly connected to a support leg, and there are four sets of support legs, which are distributed at the four corners of the lower end of the storage compartment.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When the lower pressure head rotates upward, the spring plate undergoes elastic deformation and stores potential energy. Then, after the stationary contact element is placed into the placement slot, the restoring force of the spring plate drives the lower pressure head to rotate downward. The rotation angle is adaptively adjusted according to the thickness of the element. When the thickness of the element increases, the compression of the spring plate increases, resulting in a stronger rotation torque. When the thickness decreases, the rotation torque weakens accordingly, thus achieving adaptive clamping of the stationary contact element. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a static contact adaptive welding fixture according to this utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the overall structure of a static contact adaptive welding fixture according to this utility model. Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the placement auxiliary mechanism for a static contact adaptive welding fixture according to the present invention;

[0017] Figure 4 This is a partial structural diagram of the placement auxiliary mechanism of the static contact adaptive welding fixture of this utility model.

[0018] In the diagram: 1. Welding chamber; 2. Welder; 3. Storage chamber; 4. Support leg; 5. Rotating table; 6. Placement auxiliary mechanism; 61. Placement rack; 62. Placement slot; 63. Support frame; 64. Adjustment rod; 65. Rotating shaft; 66. Lower pressure head; 67. Sliding groove; 68. Connecting frame; 69. Limiting rod; 610. Connecting block; 611. Spring plate; 612. Mounting base. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1-4As shown, a static contact adaptive welding fixture includes a welding chamber 1 and a welding device 2. A rotating platform 5 is installed on the bottom inner side of the welding chamber 1, and a placement auxiliary mechanism 6 is provided on the outer side of the rotating platform 5. The placement auxiliary mechanism 6 includes a placement frame 61 fixedly connected to the outer side of the rotating platform 5. A placement groove 62 is opened at the upper end of the placement frame 61. A support frame 63 is fixedly connected to the front side of the upper end of the placement frame 61 near the placement groove 62. An adjusting rod 64 is movably connected to the inner side of the support frame 63. A rotating shaft 65 is fixedly connected inside the adjusting rod 64. A pressing head 66 is fixedly connected to the rear end of the adjusting rod 64. A sliding groove 67 is opened at one end of the adjusting rod 64. A docking frame 68 is movably connected to the outer side of the adjusting rod 64 near the front side of the support frame 63. A limit rod 69 is slidably connected to the inner side of the sliding groove 67. A connecting block 610 is fixedly connected to the lower end of the docking frame 68. A spring plate 611 is fixedly connected to the lower end of the connecting block 610.

[0021] In this embodiment, the lower end of the placement rack 61 is fixedly connected to the mounting base 612. There are multiple sets of placement racks 61. The rotating shaft 65 extends into the interior of the support frame 63. The rotating shaft 65 and the support frame 63 are movably connected. The pressing head 66 is L-shaped and is located above the placement groove 62. The limiting rod 69 extends into the interior of the docking frame 68 and is fixedly connected to the docking frame 68. The spring plate 611 is arc-shaped and is installed inside the mounting base 612.

[0022] Specifically, the worker first pulls the lower pressure head 66 upward to rotate it, causing the lower pressure head 66 to drive the control rod 64 to rotate around the rotating shaft 65. This causes the control rod 64 to push the docking frame 68 downward via the limit rod 69, compressing the spring plate 611. Then, the stationary contact element is placed into the placement slot 62, and the lower pressure head 66 is released. Under the elastic action of the spring plate 611, the docking frame 68 is pushed upward, causing the docking frame 68 to push the control rod 64 in the opposite direction around the rotating shaft 65 via the limit rod 69. This also causes the control rod 64 to lower... When the pressure head 66 presses against the stationary contact element, it clamps the stationary contact element. When the pressure head 66 rotates upward, the spring plate 611 undergoes elastic deformation and stores potential energy. After the stationary contact element is placed into the placement slot 62, the restoring force of the spring plate 611 drives the pressure head 66 to rotate downward. Its rotation angle is adaptively adjusted according to the thickness of the element. When the thickness of the element increases, the compression of the spring plate 611 increases, resulting in a stronger rotational torque. When the thickness decreases, the rotational torque weakens accordingly, thus achieving adaptive clamping of the stationary contact element.

[0023] In this embodiment, the welder 2 is installed on the inner bottom of the welding chamber 1 near the rotating platform 5. The lower end of the welding chamber 1 is fixedly connected to the storage chamber 3, and the lower end of the storage chamber 3 is fixedly connected to the support leg 4. There are four sets of support legs 4, and the four sets of support legs 4 are distributed at the four corners of the lower end of the storage chamber 3.

[0024] Specifically, the welder 2 is started to weld the stationary contact elements, and the rotating table 5 is started to drive the placement auxiliary mechanism 6 to rotate, so that multiple sets of stationary contact elements are welded in sequence.

[0025] Working principle:

[0026] In operation, the worker first pulls the lower pressure head 66 upward to rotate it, causing the lower pressure head 66 to drive the regulating rod 64 to rotate around the rotating shaft 65. This causes the regulating rod 64 to push the docking frame 68 downward via the limit rod 69, compressing the spring plate 611. Then, the stationary contact element is placed in the placement slot 62. The lower pressure head 66 is then released, causing the spring plate 611 to push the docking frame 68 upward under its elastic force. This causes the docking frame 68 to push the regulating rod 64 in the opposite direction around the rotating shaft 65 via the limit rod 69. The regulating rod 64 then presses the lower pressure head 66 onto the stationary contact element, clamping the stationary contact element. Welding is then started. The connector 2 enables the welder 2 to weld the stationary contact element, and the rotating table 5 is restarted, which drives the placement auxiliary mechanism 6 to rotate, so that multiple sets of stationary contact elements are welded in sequence. When the lower pressure head 66 rotates upward, the spring plate 611 undergoes elastic deformation and stores potential energy. Then, after the stationary contact element is placed into the placement slot 62, the restoring force of the spring plate 611 drives the lower pressure head 66 to rotate downward. Its rotation angle is adaptively adjusted according to the thickness of the element. When the thickness of the element increases, the compression of the spring plate 611 increases, resulting in a stronger rotation torque. When the thickness decreases, the rotation torque weakens accordingly, thus achieving adaptive clamping of the stationary contact element.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A static contact adaptive welding fixture, comprising a welding chamber (1) and a welding device (2), characterized in that: A rotating platform (5) is installed on the inner bottom of the welding chamber (1). A placement auxiliary mechanism (6) is provided on the outer side of the rotating platform (5). The placement auxiliary mechanism (6) includes a placement frame (61) fixedly connected to the outer side of the rotating platform (5). A placement slot (62) is opened at the upper end of the placement frame (61). A support frame (63) is fixedly connected to the front side of the upper end of the placement frame (61) near the placement slot (62). An adjusting rod (64) is movably connected to the inner side of the support frame (63). The adjusting rod (64) has... A rotating shaft (65) is fixedly connected internally. A pressing head (66) is fixedly connected to the rear end of the regulating rod (64). A sliding groove (67) is provided at one end of the regulating rod (64). A docking frame (68) is movably connected to the front side of the regulating rod (64) near the support frame (63). A limit rod (69) is slidably connected to the inner side of the sliding groove (67). A connecting block (610) is fixedly connected to the lower end of the docking frame (68). A spring plate (611) is fixedly connected to the lower end of the connecting block (610).

2. A stationary contact self-adapting welding fixture according to claim 1, characterized in that: The lower end of the placement rack (61) is fixedly connected to the mounting base (612), and there are multiple sets of the placement rack (61).

3. A stationary contact self-adapting welding fixture according to claim 2, characterized in that: The rotating shaft (65) extends into the interior of the support frame (63), and the rotating shaft (65) is movably connected to the support frame (63). The pressing head (66) is L-shaped and is located above the placement slot (62).

4. A stationary contact self-adapting welding fixture as claimed in claim 2, characterized in that: The limiting rod (69) extends into the interior of the docking frame (68), and the limiting rod (69) is fixedly connected to the docking frame (68). The spring plate (611) is arc-shaped and is installed inside the mounting base (612).

5. A stationary contact adaptive welding fixture as defined in claim 1, wherein: The welding device (2) is installed on the inner bottom of the welding chamber (1) near the rotating platform (5), and the lower end of the welding chamber (1) is fixedly connected to the storage chamber (3).

6. A stationary contact self-adapting welding fixture according to claim 5, characterized in that: The lower end of the storage compartment (3) is fixedly connected to a support leg (4). There are four sets of support legs (4), and the four sets of support legs (4) are distributed at the four corners of the lower end of the storage compartment (3).

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