A kind of control device for the stable operation of a lap welding machine head and double sealing of internal cooling water leakage

Abstract

The utility model discloses a kind of butt welding machine welding head stable operation and internal cooling water double-sealing internal channeling's reconstruction control device, belong to butt welding machine technical field, a kind of butt welding machine welding head stable operation and internal cooling water double-sealing internal channeling's reconstruction control device, including bedplate, the bedplate one end is fixedly connected with front cover, the center position of front cover is rotatably connected with welding head shaft, the welding head shaft extends to bedplate interior, it can effectively solve the welding head shaft gap variation caused by structural design defect when traditional welding head device is in long-term high-speed operation, and then cause welding head vibration, deviation etc. The problem of affecting welding accuracy and equipment failure rate is solved, and the problem of single sealing mode of existing cooling water system being prone to aging and wear after long-term use, leading to cooling water channeling to oil circuit system or other key components, causing lubricating oil pollution, reduced lubrication effect and circuit short circuit and other safety hazards is solved.

Description

Technical Field

[0001] This utility model relates to the field of lap welding machine technology, and more specifically, to a modified control device for stable operation of the welding head and internal cooling water leakage through double seals in a lap welding machine. Background Technology

[0002] In the actual operation of the lap welding machine, the welding head, as the core working component, directly affects the welding quality and production efficiency due to its operational stability.

[0003] Traditional welding head devices, under long-term high-speed operation, often experience changes in the clearance between the welding head shaft and related components due to structural design flaws. This leads to problems such as welding head vibration and misalignment, reducing welding accuracy and increasing equipment failure rate. Simultaneously, the internal cooling water system of the welding head is used to cool it in real time to ensure normal operation in high-temperature welding environments. However, existing devices often use a single sealing method, which, after prolonged use, is prone to aging and wear of the seals, causing cooling water to leak internally. Once cooling water leaks into the welding head's oil circuit system or other critical components, it contaminates the lubricating oil, reduces lubrication effectiveness, and can even cause serious safety hazards such as short circuits, significantly impacting the welding machine's lifespan and operational safety. Therefore, this paper researches and improves the existing structure to provide a modified control device for stable operation of the welding head and dual-seal internal cooling water leakage prevention in lap welding machines, aiming to achieve greater practical value. Utility Model Content

[0004] 1. Technical problems to be solved To address the problems existing in the prior art, the purpose of this utility model is to provide a modified control device for the stable operation of the welding head of a lap welding machine and the internal cooling water leakage caused by double sealing. It can effectively solve the problem that the welding head shaft fit clearance changes due to structural design defects during long-term high-speed operation of traditional welding head devices, which leads to welding head vibration, displacement, and other issues affecting welding accuracy and equipment failure rate. At the same time, it solves the problem that the existing single-seal method of cooling water system is prone to aging and wear of seals after long-term use, which causes cooling water to leak into the oil circuit system or other critical components, resulting in lubricating oil contamination, reduced lubrication effect, and electrical short circuits, thus improving the stability of welding head operation, welding accuracy, extending the service life of welding machine, and improving operational safety.

[0005] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0006] A modification control device for stable operation of the welding head and internal cooling water leakage in a lap welding machine includes a base. A front cover is fixedly connected to one end of the base. A welding head shaft is rotatably connected to the center of the front cover. The welding head shaft extends into the interior of the base. A bushing is sealed to the outer periphery of the extended end of the welding head shaft. A tail sealing support is fixedly connected to the other end of the base. A rear cover is fixedly connected to one end of the tail sealing support. An oil passage seal, a water passage seal, and a spacer ring are provided between the outer periphery of the bushing and the inner wall of the tail sealing support, with the spacer ring located between the oil passage seal and the water passage seal.

[0007] Furthermore, the spacer ring is fixed to the inner wall of the tail sealing support, and a negative pressure cavity is provided between the spacer ring and the oil circuit seal, water circuit seal and bushing.

[0008] Furthermore, a conductive oil cavity is provided between the inner wall of the tail sealing support and the oil circuit seal and welding head shaft.

[0009] Furthermore, a reflux cavity is provided between the end of the welding head shaft extension and the bushing and the rear cover.

[0010] Furthermore, an external leakage point is provided on the outer periphery of the tail sealing support, and the external leakage point is connected to the negative pressure cavity.

[0011] Furthermore, the inner wall of the machine base is sealed to the tail sealing support by a sealing ring, and the bushing is sealed to the welding head shaft by a sealing ring.

[0012] Furthermore, the tail sealing support and the rear cover are connected by a triple seal using a sealing ring.

[0013] 3. Beneficial Effects Compared with existing technologies, the advantages of this utility model are: This solution, by setting up a sealed connection structure between the bushing and the welding head shaft, effectively limits the radial runout and axial movement of the welding head shaft during high-speed operation, ensuring stable clearance between the welding head shaft and related components. This significantly improves the smoothness of welding head operation, reduces welding accuracy degradation caused by vibration and misalignment, and lowers equipment failure rate. Simultaneously, an oil circuit seal, a water circuit seal, and a spacer ring are installed between the outer circumference of the bushing and the inner wall of the tail sealing support. The spacer ring separates the oil circuit seal and the water circuit seal into independent sealing spaces, achieving dual sealing protection for both systems. When the water circuit seal experiences slight leakage due to aging or wear, the spacer ring prevents cooling water from directly entering the oil circuit system. Combined with the negative pressure chamber, leaked cooling water can be promptly discharged through external drainage points, preventing cooling water from contaminating lubricating oil or causing short circuits and other safety hazards. This effectively extends the service life of the seals and improves the overall operational safety of the welding machine. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 For the present utility model Figure 2 Enlarged structural diagram of position A in the middle.

[0015] Explanation of the labels in the diagram: 1. Base; 2. Front cover; 3. Welding head shaft; 4. Bushing; 5. Tail sealing support; 6. Back cover; 7. Oil circuit sealing; 8. Waterway sealing; 9. Spacer ring; 10. Negative pressure chamber; 11. Conductive oil cavity; 12. Reflux chamber; 13. External drainage point. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Example: Please see Figures 1-3 A modification control device for stable operation of the welding head and internal cooling water leakage in a lap welding machine includes a base 1. A front cover 2 is fixedly connected to one end of the base 1. A welding head shaft 3 is rotatably connected to the center of the front cover 2. The welding head shaft 3 extends into the interior of the base 1. A bushing 4 is sealed to the outer periphery of the extended end of the welding head shaft 3. A tail sealing support 5 is fixedly connected to the other end of the base 1. A rear cover 6 is fixedly connected to one end of the tail sealing support 5. An oil passage seal 7, a water passage seal 8, and a spacer ring 9 are provided between the outer periphery of the bushing 4 and the inner wall of the tail sealing support 5. The spacer ring 9 is located between the oil passage seal 7 and the water passage seal 8.

[0018] See Figure 2 and Figure 3 The spacer ring 9 is fixed to the inner wall of the tail sealing support 5, and a negative pressure cavity 10 is provided between the spacer ring 9, the oil passage seal 7, the water passage seal 8 and the bushing 4.

[0019] See Figure 3 A conductive oil cavity 11 is provided between the inner wall of the tail sealing support 5, the oil circuit seal 7, and the welding head shaft 3.

[0020] See Figure 3 A reflux cavity 12 is provided between the extended end of the welding head shaft 3 and the bushing 4 and the rear cover 6.

[0021] See Figure 2 The tail sealing support 5 is provided with an external leakage point 13 on its outer periphery, and the external leakage point 13 is connected to the negative pressure cavity 10.

[0022] See Figure 2 and Figure 3 The inner wall of the base 1 is sealed to the tail sealing support 5 by sealing ring one, the bushing 4 is sealed to the welding head shaft 3 by sealing ring two, and the tail sealing support 5 is sealed to the rear cover 6 by sealing ring three. In use, the base 1 and the tail sealing support 5, the bushing 4 and the welding head shaft 3, and the tail sealing support 5 and the rear cover 6 are sealed by sealing ring one, sealing ring two, and sealing ring three respectively, which further enhances the overall sealing performance of the device, ensures that the oil circuit and water circuit system can be stably isolated during long-term use, ensures the normal operation of the welding head in the high-temperature welding environment, and improves welding quality and production efficiency.

[0023] During use: The welding head shaft 3 rotates at high speed from the center of the front cover 2 under the drive of the drive device. The bushing 4 and the welding head shaft 3 form a tight sealing connection through the sealing ring 2, which effectively limits the radial runout of the welding head shaft 3 and ensures that the fit clearance between it and the machine base 1, the front cover 2 and other components is stable, avoiding the welding head displacement caused by vibration generated by high-speed operation. At the same time, cooling water enters the internal flow channel of the welding head shaft 3 through a preset channel, cools the welding head, and then flows back to the external cooling system through the return cavity 12. The water channel seal 8 forms the first sealing barrier for the cooling water channel to prevent cooling water from leaking to the outside. The lubricating oil in the conductive oil cavity 11 provides lubrication for the rotation of the welding head shaft 3, and the oil channel seal 7 prevents the lubricating oil from overflowing. The spacer ring 9 separates the oil circuit seal 7 from the water circuit seal 8, creating independent sealed spaces for both. When the water circuit seal 8 experiences slight aging and wear due to long-term use, the leaking cooling water is blocked by the spacer ring 9 and accumulates in the negative pressure chamber 10. At this time, the negative pressure chamber 10 is connected to an external negative pressure device through the external leakage point 13. Under the action of negative pressure, the leaking cooling water is promptly discharged from the external leakage point 13 to the outside of the device, preventing it from entering the oil circuit seal 7 side and contaminating the lubricating oil. The sealing ring 1 between the base 1 and the tail sealing support 5, and the sealing ring 3 between the tail sealing support 5 and the rear cover 6 further enhance the overall sealing performance of the device, preventing external impurities from entering or internal fluids from leaking out. Through the synergistic effect of each component, the device achieves a dual control effect of stable welding head operation and dual-seal anti-internal leakage of cooling water.

[0024] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A modified control device for stable operation of the welding head and internal cooling water leakage under double seals in a lap welding machine, comprising a base (1), characterized in that: One end of the base (1) is fixedly connected to a front cover (2), and a welding head shaft (3) is rotatably connected to the center of the front cover (2). The welding head shaft (3) extends into the interior of the base (1). A bushing (4) is sealed to the outer periphery of the extended end of the welding head shaft (3). A tail sealing support (5) is fixedly connected to the other end of the base (1). A rear cover (6) is fixedly connected to one end of the tail sealing support (5). An oil passage seal (7), a water passage seal (8), and a spacer (9) are provided between the outer periphery of the bushing (4) and the inner wall of the tail sealing support (5). The spacer (9) is located between the oil passage seal (7) and the water passage seal (8).

2. The modified control device for stable operation of the welding head and internal cooling water leakage under double seals of a lap welding machine according to claim 1, characterized in that: The spacer (9) is fixed to the inner wall of the tail sealing support (5), and a negative pressure cavity (10) is provided between the spacer (9) and the oil circuit seal (7), the water circuit seal (8) and the bushing (4).

3. The modified control device for stable operation of the welding head and internal cooling water leakage under double seals of a lap welding machine according to claim 1, characterized in that: A conductive oil cavity (11) is provided between the inner wall of the tail sealing support (5), the oil circuit seal (7), and the welding head shaft (3).

4. The modified control device for stable operation of the welding head and internal cooling water leakage under double seals of a lap welding machine according to claim 1, characterized in that: A reflux cavity (12) is provided between the extended end of the welding head shaft (3), the bushing (4), and the rear cover (6).

5. The modified control device for stable operation of the welding head and internal cooling water leakage under double seals of a lap welding machine according to claim 1, characterized in that: The tail sealing support (5) is provided with an external drainage point (13) on its outer periphery, and the external drainage point (13) is connected to the negative pressure cavity (10).

6. The modified control device for stable operation of the welding head and internal cooling water leakage under double seals of a lap welding machine according to claim 1, characterized in that: The inner wall of the base (1) is sealed to the tail sealing support (5) by a sealing ring, and the bushing (4) is sealed to the welding head shaft (3) by a sealing ring.

7. The modified control device for stable operation of the welding head and internal cooling water leakage under double seals of a lap welding machine according to claim 1, characterized in that: The tail sealing support (5) and the rear cover (6) are connected by a triple seal with a sealing ring.

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