An oxidation-preventing treated wire harness terminal welding mechanism

Abstract

The utility model discloses a kind of wire harness terminal welding mechanisms of anti-oxidation treatment, belong to wire harness terminal welding technical field, its technical scheme main points include welding station, the top of welding station is fixedly connected with backplate, the top of the front side of backplate is fixedly connected with machine plate, the top of machine plate is fixedly connected with electric push rod, the telescopic end of electric push rod is fixedly connected with connecting rod, the bottom of connecting rod is fixedly connected with welding device, by setting anti-oxidation component, sealing shell can make welding area form closed space, effectively isolate outside air, nitrogen cylinder is connected with circular cavity by branch pipe and electronic pressure reducing valve, nitrogen can be filled into sealing shell by the gas outlet hole evenly distributed at the bottom of circular cavity, form stable inert gas protection atmosphere, ensure that welding process is always in low-oxygen environment, effectively avoid terminal and wire harness metal material oxidation, improve the conductivity and mechanical strength of welded joint, improve the reliability and service life of product.

Description

Technical Field

[0001] This utility model relates to the field of wire harness terminal welding technology, and in particular to a wire harness terminal welding mechanism with anti-oxidation treatment. Background Technology

[0002] In industries such as electronics, aerospace, and new energy vehicles, wire harness terminal welding is a key process for connecting electrical circuits. Crimping welding is one of the commonly used processes in wire harness terminal welding. Using a special crimping tool, the terminal and the wire harness conductor are tightly pressed together under a certain pressure, so that a metal-to-metal bond is formed between the two.

[0003] Traditional automatic wire harness welding devices often rely on simple clamping structures to fix and clamp wire harnesses. During the welding process, various factors can easily cause the wire harness to loosen or shift, which may result in weak welds, incomplete welds, and other problems, greatly reducing the welding accuracy.

[0004] The existing patent (publication number: CN222826790U) discloses an automatic wire harness welding device, which adds a locking function to the clamping mechanism. The locking function can better fix the position of the wire harness, prevent the wire harness from shaking or shifting during the welding process, make the welding operation more stable and reliable, reduce welding defects or failures caused by wire harness instability, ensure accurate welding point position, and improve welding precision, thereby achieving the effect of improving welding precision.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, as a core process for electrical circuit connections, the welding quality of wire harness terminals directly affects the performance and reliability of the equipment. During the welding process, the metal materials of the terminals and wire harnesses are highly susceptible to undergoing a violent oxidation reaction with oxygen in the air at high temperatures, forming a dense oxide film on the surface of the weld joint. This not only significantly reduces the conductivity of the weld joint but also weakens its mechanical strength, leading to problems such as poor contact and circuit failures, severely restricting the product's service life and stability.

[0006] To address this, a wire harness terminal welding mechanism with anti-oxidation treatment is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a wire harness terminal welding mechanism with anti-oxidation treatment, which can solve the problem that in the existing welding process, the metal materials of the terminal and the wire harness are very easy to undergo a violent oxidation reaction with oxygen in the air at high temperature, forming a dense oxide film on the surface of the weld point. This not only greatly reduces the conductivity of the weld joint, but also weakens the mechanical strength, and thus causes problems such as poor contact and circuit failure, which seriously restricts the service life and stability of the product.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a welding mechanism for anti-oxidation wire harness terminals, comprising a welding table, a back plate fixedly connected to the top of the welding table, an organic plate fixedly connected to the top of the front side of the back plate, an electric push rod fixedly connected to the top of the organic plate, a connecting rod fixedly connected to the telescopic end of the electric push rod, a welding device fixedly connected to the bottom of the connecting rod, an adaptive component fixedly connected to the surface of the connecting rod, an anti-oxidation component fixedly connected to the bottom of the adaptive component, the anti-oxidation component comprising a sealing shell, the welding device located inside the sealing shell, a circular cavity fixedly connected to the top of the sealing shell, a plurality of air vents evenly opened at the bottom of the circular cavity, a branch pipe fixedly connected to the top of the circular cavity, and an electronic pressure reducing valve installed inside the branch pipe, and a nitrogen cylinder fixedly connected to the other end of the branch pipe.

[0009] Preferably, the adaptive component includes a mounting ring, which is fixedly sleeved on the surface of the connecting rod. Support plates are fixedly connected to both the front and rear sides of the mounting ring surface, and mounting grooves are provided on the opposite sides of the two support plates.

[0010] Preferably, a vertical rod is fixedly connected inside the mounting groove, and a connecting frame is slidably connected to the surface of the vertical rod. The bottom of the connecting frame is fixedly connected to the top of the sealing shell.

[0011] Preferably, a fastening spring is fitted onto the surface of the vertical rod, and the two ends of the fastening spring are fixedly connected to the inner wall of the mounting groove and the connecting frame, respectively.

[0012] Preferably, a vacuum pump is fixedly connected to the left side of the sealing shell surface, the pumping end of the vacuum pump is fixedly connected to the sealing shell, and an oxygen sensor is fixedly connected to the inner wall of the sealing shell.

[0013] Preferably, a sealing ring is fixedly connected to the bottom of the sealing shell, and an annular groove is provided on the top of the welding station, with the sealing ring cooperating with the annular groove.

[0014] Preferably, a fixing block is fixedly connected to the top of the welding station, and a placement groove is opened on the top of the fixing block, with the wire harness and terminals both placed inside the placement groove.

[0015] Preferably, a controller is fixedly installed on the left side of the back plate, and the electric push rod, welding device, electronic pressure reducing valve and vacuum pump are all used in conjunction with the controller.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This application incorporates an anti-oxidation component. The sealing shell can create a closed space in the welding area, effectively isolating it from outside air. The nitrogen cylinder is filled into the sealing shell through a branch pipe, an electronic pressure reducing valve, and a circular cavity. Nitrogen gas is then introduced into the sealing shell through evenly distributed vent holes at the bottom of the circular cavity, forming a stable inert gas protective atmosphere. This ensures that the welding process is always in a low-oxygen environment, effectively preventing oxidation of the terminal and wire harness metal materials, improving the conductivity and mechanical strength of the welded joint, and enhancing the reliability and service life of the product.

[0018] 2. By setting an adaptive component, when the electric push rod drives the sealing shell and welding device to press down together, the sealing ring at the bottom of the sealing shell will first contact the welding table. At this time, the connecting bracket in the mounting groove will slide upward along the vertical rod, compressing the fastening spring. Under the action of the elastic force of the fastening spring, the sealing shell can always be tightly fitted with the top of the welding table, forming a stable and reliable sealing structure, effectively preventing outside air from entering the welding area and ensuring the stable function of the anti-oxidation component. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the anti-oxidation treatment wire harness terminal welding mechanism of this utility model;

[0020] Figure 2 This is a schematic diagram showing the connection between the adaptive component and the anti-oxidation component of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the adaptive component of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the anti-oxidation component of this utility model;

[0023] Figure 5 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0024] In the diagram, 1. Welding table; 2. Back plate; 3. Machine plate; 4. Electric push rod; 5. Connecting rod; 6. Welding device; 7. Adaptive component; 701. Mounting ring; 702. Support plate; 703. Mounting groove; 704. Vertical rod; 705. Connecting frame; 706. Fastening spring; 8. Anti-oxidation component; 801. Sealing shell; 802. Circular cavity; 803. Vent; 804. Branch pipe; 805. Electronic pressure reducing valve; 806. Nitrogen cylinder; 9. Vacuum pump; 10. Oxygen sensor; 11. Sealing ring; 12. Annular groove; 13. Fixing block; 14. Placement groove; 15. Controller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 The present invention provides the following technical solution:

[0027] An anti-oxidation wire harness terminal welding mechanism includes a welding table 1, a back plate 2 fixedly connected to the top of the welding table 1, an organic plate 3 fixedly connected to the top of the front side of the back plate 2, an electric push rod 4 fixedly connected to the top of the organic plate 3, a connecting rod 5 fixedly connected to the telescopic end of the electric push rod 4, a welding device 6 fixedly connected to the bottom of the connecting rod 5, an adaptive component 7 fixedly connected to the surface of the connecting rod 5, an anti-oxidation component 8 fixedly connected to the bottom of the adaptive component 7, the anti-oxidation component 8 including a sealing shell 801, the welding device 6 located inside the sealing shell 801, a circular cavity 802 fixedly connected to the top of the inside of the sealing shell 801, a plurality of air vents 803 evenly opened at the bottom of the circular cavity 802, a branch pipe 804 fixedly connected to the top of the circular cavity 802, and an electronic pressure reducing valve 805 provided inside the branch pipe 804, and a nitrogen cylinder 806 fixedly connected to the other end of the branch pipe 804.

[0028] In this embodiment: by setting the anti-oxidation component 8, the sealing shell 801 can completely enclose the welding device 6, thereby forming a closed space, preventing outside air from entering the welding area, and creating a relatively independent environment for the welding process. The circular cavity 802 is fixed inside the top of the sealing shell 801, and the multiple evenly distributed vent holes 803 at the bottom are key to the uniform diffusion of nitrogen. When nitrogen flows from the nitrogen cylinder 806 into the circular cavity 802 through the branch pipe 804, it is released through these vent holes 803 at a relatively uniform flow rate and volume, which can quickly and completely fill the interior of the sealing shell 801, expelling residual air and ensuring that the welding area is fully covered by nitrogen, forming a stable inert gas protective atmosphere. The branch pipe 804 can be connected to the nitrogen... Bottle 806 and cavity 802 are the channels for nitrogen transmission. The electronic pressure reducing valve 805 is installed inside the branch pipe 804 and can accurately adjust the pressure and flow of nitrogen according to the instructions of controller 15. By monitoring the oxygen concentration in the sealing shell 801 in real time, when the oxygen content changes, the electronic pressure reducing valve 805 can respond quickly and adjust the nitrogen output to maintain a stable low-oxygen environment in the sealing shell 801, ensuring the accuracy and continuity of the anti-oxidation effect. Nitrogen bottle 806 is a nitrogen storage container that can provide a sufficient source of inert gas for the entire anti-oxidation component 8, ensuring that nitrogen can be continuously replenished into the sealing shell 801 during the welding process to replace the oxygen therein and ensure the effective realization of the anti-oxidation function.

[0029] Specifically, such as Figure 3 As shown, the adaptive component 7 includes a mounting ring 701, which is fixedly sleeved on the surface of the connecting rod 5. Support plates 702 are fixedly connected to the front and rear sides of the surface of the mounting ring 701, and mounting grooves 703 are opened on the side of the two support plates 702 that are far apart from each other.

[0030] Specifically, such as Figure 3 As shown, a vertical rod 704 is fixedly connected inside the mounting groove 703, and a connecting bracket 705 is slidably connected to the surface of the vertical rod 704. The bottom of the connecting bracket 705 is fixedly connected to the top of the sealing shell 801.

[0031] Specifically, such as Figure 3 As shown, a fastening spring 706 is sleeved on the surface of the vertical rod 704, and the two ends of the fastening spring 706 are fixedly connected to the inner wall of the mounting groove 703 and the connecting bracket 705, respectively.

[0032] In this embodiment: by setting the adaptive component 7, the mounting ring 701 is fixedly sleeved on the surface of the connecting rod 5, which can provide a stable mounting base for the entire component. It can transmit the power of the electric push rod 4 to the lower structure, while ensuring that the relative positions of components such as the support plate 702 and the vertical rod 704 are fixed with the welding device 6, ensuring the stability and coordination of the component during movement. The support plate 702 can provide mounting support for the vertical rod 704, and the mounting groove 703 limits the sliding direction of the connecting frame 705. During the pressing of the sealing shell 801, the mounting groove 703 can guide the connecting frame 705 to slide smoothly in the vertical direction, avoiding the sealing shell 801 from shifting or shaking, and ensuring that the sealing operation between the sealing shell 801 and the welding table 1 is accurate and reliable. The vertical rod 704 is The sliding guide shaft of the connecting frame 705 ensures the straightness and stability of the connecting frame 705 when it moves up and down. At the same time, the vertical rod 704 provides support for the fastening spring 706, so that the elastic force of the fastening spring 706 can act on the connecting frame 705 in the correct direction, assisting the sealing shell 801 to achieve self-adjustment. The top of the connecting frame 705 can be slidably connected to the surface of the vertical rod 704. When the sealing shell 801 is pressed down, the connecting frame 705 can slide freely on the vertical rod 704, thereby driving the sealing shell 801 to adjust its position synchronously, so that the sealing shell 801 can fit tightly against the welding table 1, ensuring that the sealing effect is not affected. The elastic force of the fastening spring 706 can keep the bottom of the sealing shell 801 in close contact with the top of the welding table 1 at all times, thereby maintaining the reliability of the seal.

[0033] Specifically, such as Figure 1 , Figure 4 As shown, a vacuum pump 9 is fixedly connected to the left side of the surface of the sealing shell 801. The suction end of the vacuum pump 9 is fixedly connected to the sealing shell 801. An oxygen sensor 10 is fixedly connected to the inner wall of the sealing shell 801.

[0034] Specifically, such as Figure 4 , Figure 5 As shown, a sealing ring 11 is fixedly connected to the bottom of the sealing shell 801, and an annular groove 12 is provided on the top of the welding table 1, with the sealing ring 11 and the annular groove 12 working together.

[0035] In this embodiment: With the above settings, the vacuum pump 9 is connected to the inside of the sealing shell 801 through its suction end, which can quickly extract the air in the sealing shell 801 before welding, greatly reducing the initial oxygen content in the sealing shell 801, shortening the inert gas replacement time, and improving the efficiency of anti-oxidation treatment. The oxygen sensor 10 can monitor the oxygen concentration in the sealing shell 801 in real time and feed the data back to the controller 15. Once the oxygen concentration exceeds the set threshold, an alarm will be triggered immediately, and the controller 15 will be prompted to adjust the working status of the electronic pressure reducing valve 805, vacuum pump 9 and other equipment to ensure that the welding environment is always in a stable low-oxygen atmosphere, ensuring welding quality. The sealing ring 11 can fit tightly with the annular groove 12 to form a tight barrier, effectively preventing outside air from entering the welding area, thereby creating stable spatial conditions for anti-oxidation.

[0036] Specifically, such as Figure 5 As shown, a fixing block 13 is fixedly connected to the top of the welding station 1. A placement groove 14 is provided on the top of the fixing block 13, and the wire harness and terminals are all placed inside the placement groove 14.

[0037] Specifically, such as Figure 1 As shown, a controller 15 is fixedly installed on the left side of the back plate 2. The electric push rod 4, welding device 6, electronic pressure reducing valve 805 and vacuum pump 9 are all used in conjunction with the controller 15.

[0038] In this embodiment: Through the above settings, the placement groove 14 opened on the top of the fixing block 13 can provide reliable support for the wire harness and terminals, ensuring that the wire harness and terminals will not be displaced by external force during the welding process, laying the foundation for precise welding. The controller 15 can precisely control the extension and retraction of the electric push rod 4 according to the preset program, realize the automatic pressing and resetting of the sealing shell 801, as well as the lifting and lowering of the welding device 6 and the start and stop of welding, so as to standardize and automate the welding process and reduce human operation errors. At the same time, the controller 15 can judge the oxygen concentration of the welding environment in real time, intelligently adjust the opening of the electronic pressure reducing valve 805, control the amount of nitrogen charging, and start or stop the vacuum pump 9 as needed to ensure that the sealing shell 801 always maintains a stable low oxygen environment, providing a guarantee for high-quality welding.

[0039] Working Principle: First, the wire harness and terminals to be welded are neatly placed in the placement slot 14 of the fixing block 13, ensuring that the wire harness terminals are in the accurate welding position to avoid affecting the welding quality due to positional deviation. Then, the welding device 6 is started by the controller 15, and the electric push rod 4 in the machine plate 3 starts to work, driving the connecting rod 5, welding device 6, adaptive component 7 and anti-oxidation component 8 to move downward together. During the downward movement of the sealing shell 801, the bottom sealing ring 11 first contacts the annular groove 12 at the top of the welding table 1. At this time, the adaptive component 7 plays its role, and the connecting bracket 705 slides on the vertical rod 704 and compresses the fastening spring 706, so that the sealing ring 11 fits tightly against the annular groove 12, completing the sealing of the welding area and preventing outside air from entering. After sealing is completed, the controller 15 controls the vacuum pump 9 to start, quickly extracting the air in the sealing shell 801 and reducing the internal oxygen content. At the same time, the oxygen sensor 10 on the inner wall of the sealing shell 801 monitors the oxygen concentration in the sealing shell 801 in real time and feeds the data back to the controller 15. When the oxygen concentration drops below the preset threshold, the vacuum pump 9 stops working. After the air pump 9 stops, the controller 15 will open the electronic pressure reducing valve 805 in the branch pipe 804. Nitrogen gas from the nitrogen cylinder 806 will be evenly injected into the sealing shell 801 through the branch pipe 804 and the circular cavity 802, and then through the vent 803 at the bottom of the circular cavity 802. This will replace any residual air and create a stable inert gas protective atmosphere, providing an anti-oxidation environment for the welding process. During the nitrogen filling process, the oxygen sensor 10 will continuously monitor the oxygen concentration. If the concentration becomes abnormal, the controller 15 will automatically adjust the electronic pressure reducing valve 805 to control the amount of nitrogen injected, ensuring that the sealing shell 801 remains within a safe range. The system maintains a low-oxygen environment. Once the oxygen concentration inside the sealed housing 801 stabilizes within a safe range, the controller 15 controls the welding device 6 to start, performing welding operations on the wire harness terminals placed in the placement slot 14. During the welding process, the anti-oxidation component 8 continues to work to maintain a low-oxygen environment and ensure the quality of the weld. After welding is completed, the controller 15 first shuts down the welding device 6, and then controls the electric push rod 4 to move each component upward and reset, separating the sealed housing 801 from the welding table 1. At this time, the operator can remove the welded wire harness terminals for subsequent testing or processing.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire harness terminal welding mechanism with anti-oxidation treatment, comprising a welding table (1), characterized in that: A back plate (2) is fixedly connected to the top of the welding station (1). An organic plate (3) is fixedly connected to the top of the front side of the back plate (2). An electric push rod (4) is fixedly connected to the top of the organic plate (3). A connecting rod (5) is fixedly connected to the telescopic end of the electric push rod (4). A welding device (6) is fixedly connected to the bottom of the connecting rod (5). An adaptive component (7) is fixedly connected to the surface of the connecting rod (5). An anti-oxidation component (8) is fixedly connected to the bottom of the adaptive component (7). The oxidation component (8) includes a sealing shell (801), the welding device (6) is located inside the sealing shell (801), a circular cavity (802) is fixedly connected to the top inside the sealing shell (801), a plurality of air outlet holes (803) are evenly opened at the bottom of the circular cavity (802), a branch pipe (804) is fixedly connected to the top of the circular cavity (802), and an electronic pressure reducing valve (805) is provided inside the branch pipe (804), and a nitrogen cylinder (806) is fixedly connected to the other end of the branch pipe (804).

2. The anti-oxidation treatment wire harness terminal welding mechanism according to claim 1, characterized in that: The adaptive component (7) includes a mounting ring (701), which is fixedly sleeved on the surface of the connecting rod (5). Support plates (702) are fixedly connected to the front and rear sides of the surface of the mounting ring (701), and mounting grooves (703) are opened on the side of the two support plates (702) that are far apart from each other.

3. The anti-oxidation treatment wire harness terminal welding mechanism according to claim 2, characterized in that: A vertical rod (704) is fixedly connected inside the mounting groove (703), and a connecting frame (705) is slidably connected to the surface of the vertical rod (704). The bottom of the connecting frame (705) is fixedly connected to the top of the sealing shell (801).

4. The anti-oxidation treatment wire harness terminal welding mechanism according to claim 3, characterized in that: The surface of the vertical rod (704) is fitted with a fastening spring (706), and the two ends of the fastening spring (706) are fixedly connected to the inner wall of the mounting groove (703) and the connecting frame (705), respectively.

5. The anti-oxidation treatment wire harness terminal welding mechanism according to claim 1, characterized in that: A vacuum pump (9) is fixedly connected to the left side of the surface of the sealing shell (801). The pumping end of the vacuum pump (9) is fixedly connected to the sealing shell (801). An oxygen sensor (10) is fixedly connected to the inner wall of the sealing shell (801).

6. The anti-oxidation treatment wire harness terminal welding mechanism according to claim 1, characterized in that: The bottom of the sealing shell (801) is fixedly connected with a sealing ring (11), and the top of the welding table (1) is provided with an annular groove (12), and the sealing ring (11) and the annular groove (12) are used in conjunction.

7. The anti-oxidation treatment wire harness terminal welding mechanism according to claim 1, characterized in that: The top of the welding station (1) is fixedly connected to a fixing block (13), and the top of the fixing block (13) is provided with a placement groove (14), and the wire harness and terminals are all placed inside the placement groove (14).

8. The anti-oxidation treatment wire harness terminal welding mechanism according to claim 5, characterized in that: A controller (15) is fixedly installed on the left side of the back plate (2). The electric push rod (4), welding device (6), electronic pressure reducing valve (805) and vacuum pump (9) are all used in conjunction with the controller (15).

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