A connection device for secondary wire connectors of a fixed welding machine

Abstract

This utility model proposes a fixed secondary wire connector connection device for welding machines, belonging to the technical field of welding equipment. It solves the problems of traditional quick connectors being prone to loosening, leading to poor contact, overheating and fire, high maintenance costs, and unstable welding quality. It includes a protective housing, an insulating bakelite board, a copper connecting plate, and a flip-top insulating door. The protective housing has a connecting connector inside. The insulating bakelite board is installed inside the protective housing, and the copper connecting plate is installed on the insulating bakelite board. The upper end of the copper connecting plate is connected to the secondary wire terminal of the welding machine, and the lower end is connected to the welding cable. The flip-top insulating door is installed on the side of the protective housing. The copper connecting plate and the insulating bakelite board are fixed together with fasteners. It is mainly used for fixing welding wire connectors.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding equipment, and in particular relates to a connection device for a fixed secondary wire connector of an electric welding machine. Background Technology

[0002] Electric welding is a core process in manufacturing, and its connection reliability directly affects welding quality and production efficiency. Currently, electric welding operations generally adopt a fixed welding machine group layout, and a grounding network is laid under the roller frame of the factory to achieve a stable connection between the grounding terminal of the welding machine and the grounding wire of the factory. This replaces the traditional temporary strip splicing method, which significantly improves the stability of welding quality and the convenience of operation. Operators only need to complete the welding cable connection to quickly start working, greatly shortening the preparation time.

[0003] However, the connection between the welding machine's secondary cable and the welding torch cable still largely relies on traditional quick-connect couplings. These couplings are prone to loosening due to mechanical limitations, leading to increased contact resistance, overheating, and potentially melting of the sheath or even fire, posing serious safety hazards. Frequent coupling replacements not only increase maintenance costs but also cause unstable weld quality due to welding current fluctuations, affecting product yield. With the increasing scale of welding operations, traditional connection methods can no longer meet the demands for high reliability and efficiency, necessitating an innovative secondary cable connection technology that combines stability, safety, and convenience.

[0004] In recent years, the trend of intelligent upgrading of welding equipment has become significant. Technologies such as welding robots and adaptive power control have been gradually applied. However, the shortcomings of the secondary line connection link still restrict the overall process level. Utility Model Content

[0005] In view of this, the present invention aims to propose a fixed welding machine secondary wire connector connection device to solve the problems of poor contact, overheating and fire caused by loosening of traditional quick connectors, high maintenance costs and unstable welding quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fixed welding machine secondary wire connector connection device includes a protective box, an insulating bakelite board, a copper connecting plate, and a flip-top insulating door. The protective box has a connecting connector inside. The insulating bakelite board is installed inside the protective box. The copper connecting plate is installed on the insulating bakelite board. The upper end of the copper connecting plate is connected to the secondary wire terminal of the welding machine, and the lower end is connected to the welding cable. The flip-top insulating door is installed on the side of the protective box.

[0008] Furthermore, the copper connecting plate and the insulating bakelite board are fixed together by fasteners.

[0009] Furthermore, a quick-locking mechanism is provided at the connection between the copper connecting plate and the welding cable.

[0010] Furthermore, the insulating bakelite board is connected to the protective housing by bolts, and multiple independent insulating bakelite boards are set according to the number of welding machines.

[0011] Furthermore, the quick-locking mechanism is a manually rotated structure, and the surface of the handwheel of the quick-locking mechanism is provided with anti-slip texture.

[0012] Furthermore, the flip-top insulated door panel is connected to the protective housing via a hinge.

[0013] Furthermore, the fastener is covered with a nylon protective sleeve.

[0014] Furthermore, the protective enclosure adopts a metal shell structure with a high-temperature resistant insulating coating sprayed on the surface.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model significantly improves the operational efficiency of secondary line connection of welding machine groups through the standardized deployment of box-type connection structure. Moreover, with the setting of threaded handwheel clamping mechanism, it can realize the rapid locking and stable conduction of welding cable, achieving the effect of zero current transmission fluctuation. After the welding machine group frame is fixedly installed, it can ensure the stability of high-load continuous welding without frequent maintenance and replacement. While simplifying operation, it saves a lot of maintenance time and material costs, provides reliable guarantee for welding quality control under complex working conditions, and provides an efficient and safe connection solution for intelligent manufacturing upgrade. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a fixed welding machine secondary wire connector connection device according to the present invention;

[0018] Figure 2 This is a structural schematic diagram of the quick-locking mechanism described in this utility model.

[0019] In the picture:

[0020] 1-Protective enclosure, 2-Insulating bakelite board, 3-Copper connecting plate, 4-Fixing fasteners, 5-Flip-top insulating door panel, 6-Quick locking mechanism. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0022] Detailed Implementation Method 1: See Figure 1-2 This embodiment describes a fixed welding machine secondary wire connector connection device, comprising a protective housing 1, an insulating bakelite board 2, a copper connecting plate 3, and a flip-top insulating door 5. The protective housing 1 has a connecting connector inside. The insulating bakelite board 2 is installed inside the protective housing 1. The copper connecting plate 3 is installed on the insulating bakelite board 2. The upper end of the copper connecting plate 3 is connected to the secondary wire terminal of the welding machine, and the lower end is connected to the welding cable. The flip-top insulating door 5 is installed on the side of the protective housing 1.

[0023] The protective enclosure 1 is designed and manufactured using a box-type connection method. It has built-in connection connectors to effectively protect the grounding connection plate from being exposed, thus achieving the purpose of safety protection. The protective enclosure 1 adopts a standard series toolbox to maintain the uniformity and high recognizability of the junction box, and can play a role in preventing dust and pollution in the welding site. The protective enclosure 1 adopts a metal shell structure with a high-temperature resistant insulating coating on the surface. The interior is divided into independent wiring compartments, each corresponding to one welding machine secondary wire connection. The compartment door is equipped with a flip-top insulating door panel, which completely covers the conductive parts when closed.

[0024] The insulating bakelite board 2 serves as an insulating material and is fixed to the protective box 1 with bolts to avoid the risk of electric shock and meet the safety requirements of electrical facilities. Several welding machines are connected to several circuits. The insulating bakelite board 2 is fixed to the bottom of the box with high-strength bolts. Its thickness is not less than 20mm and it has a groove that matches the copper connecting plate 3. The inner wall of the groove is coated with a silicone sealing layer to prevent arc spatter from entering. The copper connecting plate 3 serves as a fixed connecting plate. The upper end is connected to the secondary line terminal of the welding machine, and the lower end is connected to the welding cable. It is connected with a fixing fastener 4. The inside of the fixing fastener 4 is made of nylon protective sleeve, which plays an insulating role and ensures that the connection of each component is reliable. The welding cable can be quickly disassembled and installed through a quick locking mechanism 6.

[0025] In this example, the insulating bakelite board 2 is connected to the protective box 1 by bolts. Multiple independent insulating bakelite boards 2 are set according to the number of welding machines. The thickness of the insulating bakelite board 2 is not less than 20mm, and it has a groove that matches the copper connecting plate. The inner wall of the groove is coated with a silicone sealing layer to prevent arc spatter from entering.

[0026] In this example, the quick-locking mechanism 6 is a manually rotated structure. The handwheel of the quick-locking mechanism 6 has anti-slip texture on its surface. The quick-locking mechanism 6 includes a handwheel, a trapezoidal threaded pressure rod, and an adaptive crimping block. The rotation of the handwheel drives the pressure rod to move axially. The crimping block has a built-in spring structure, which can adapt to the clamping requirements of welding cable lugs of different thicknesses. The clamping force is ≥50 N·m. The welding cable can be quickly fixed and disassembled by tightening clockwise or loosening counterclockwise.

[0027] In this example, the flip-top insulating door panel 5 is connected to the protective box 1 via a hinge, and when closed, it forms a sealed protective structure with the box to prevent foreign objects from entering.

[0028] In this example, the protective enclosure 1 is made of metal or high-strength engineering plastic, and has a grounding terminal on its surface, which is connected to the factory grounding network.

[0029] In this example, the copper connecting plate 3 has a T-shaped cross-section structure, with a double-hole terminal block at the top, which is connected to the secondary terminal block of the welding machine via silver-plated bolts; the bottom extends to the interface on the side wall of the enclosure, forming a standardized rectangular slot, into which anti-oxidation conductive grease is pre-filled.

[0030] In this example, an anti-accidental contact baffle is installed at the interface on the side wall of the protective enclosure 1. The baffle is linked to the flip door, automatically retracting when the door is opened and completely covering the interface area when closed, achieving an IP54 protection level.

[0031] In this example, multiple standardized wiring ports are color-coded and numbered, and each port is independently configured with a current monitoring module to provide real-time feedback on the connection status to the central control system. In case of an abnormality, an audible and visual alarm is triggered.

[0032] In this embodiment, the connection between the conductive components and the grounding grid adopts a multi-point redundancy design. The grounding terminal block is welded to the grounding grid of the factory roller frame through copper braided strips, and the grounding resistance is ≤0.1Ω.

[0033] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A secondary line joint connecting device for a stationary electric welding machine, characterized in that: The protective enclosure includes a protective box (1), an insulating bakelite board (2), a copper connecting plate (3), and a flip-top insulating door (5). The protective box (1) has a connecting joint inside. The insulating bakelite board (2) is installed inside the protective box (1). The copper connecting plate (3) is installed on the insulating bakelite board (2). The upper end of the copper connecting plate (3) is connected to the secondary terminal of the welding machine, and the lower end is connected to the welding torch wire. The flip-top insulating door (5) is installed on the side of the protective box (1).

2. A secondary connection device for a stationary electric welding machine according to claim 1, characterized in that: The copper connecting plate (3) and the insulating bakelite board (2) are fixed by fasteners (4).

3. A device for connecting the secondary of an electric welding machine according to claim 1, characterized in that: The copper connecting plate (3) is provided with a quick locking mechanism (6) at the connection point with the welding cable.

4. The secondary connection device of claim 1, wherein: The insulating bakelite board (2) is connected to the protective box (1) by bolts, and multiple independent insulating bakelite boards (2) are set according to the number of welding machines.

5. A fixed welding machine secondary wire connector connection device according to claim 3, characterized in that: The quick-locking mechanism (6) is a manually rotated structure, and the handwheel surface of the quick-locking mechanism (6) is provided with anti-slip texture.

6. A fixed welding machine secondary wire connector connection device according to claim 1, characterized in that: The flip-top insulating door panel (5) is connected to the protective box (1) via a hinge.

7. A fixed welding machine secondary wire connector connection device according to claim 2, characterized in that: The fastener (4) is covered with a nylon protective sleeve on the outside.

8. A fixed welding machine secondary wire connector connection device according to claim 1, characterized in that: The protective enclosure (1) adopts a metal shell structure and is coated with a high-temperature resistant insulating coating.

9. A fixed welding machine secondary wire connector connection device according to claim 1, characterized in that: An anti-accidental contact baffle is provided at the interface of the side wall of the protective box (1), and the baffle is linked with the flip door.

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