Nitrogen protection structure applied to high-frequency welding

Abstract

The nitrogen protection structure applied to high-frequency welding comprises a welding jig used for positioning a product to be welded; the protective cover is arranged right above the welding jig, a window for the electric heating coil to stretch in is formed in one side of the protective cover, and the protective cover is configured to be capable of being driven by the lifting mechanism to descend so as to cover the welding jig and form a sealed environment with the welding jig; the buffer assembly is used for connecting the protective cover and the lifting mechanism; and the nitrogen system is used for filling nitrogen into the protective cover. According to the scheme, the protective cover is arranged above the welding jig, the protective cover is driven by the lifting mechanism to descend so as to cover the welding jig, the protective cover and the welding jig form a sealed environment, and the protective cover is filled with nitrogen through the nitrogen system, so that the problem that the surface layer of a product is oxidized due to the fact that the product is exposed in air in the welding process is avoided; the structure has the characteristics of high welding stability, high quality yield and wide production applicability, and is suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of high-frequency welding, and particularly relates to a nitrogen protection structure applied to high-frequency welding. Background Art

[0002] For the welding of output pole copper bars, copper bars / copper-aluminum lap joints on new energy vehicles, a single machine is mostly used in cooperation with tooling fixtures for welding. During the welding process, the product is exposed to the air. Without protection, it is easy to cause oxidation of the product surface during high-temperature welding, the welding temperature is unstable, and there is no effective temperature control method, which affects the welding quality. This traditional high-frequency induction brazing process cannot meet the appearance requirements of workpieces, the welding efficiency is low, the welding quality stability is insufficient, and it cannot meet the requirements of rapid production.

[0003] Therefore, in view of the deficiencies of the existing technology, it is necessary to design a nitrogen protection structure applied to high-frequency welding to solve the above problems. Summary of the Utility Model

[0004] In order to overcome the above deficiencies in the existing technology, the purpose of the utility model is to provide a nitrogen protection structure applied to high-frequency welding.

[0005] To achieve the above purpose and other related purposes, the technical solution provided by the utility model is: A nitrogen protection structure applied to high-frequency welding, comprising:

[0006] A welding jig for positioning the product to be welded;

[0007] A protective cover disposed directly above the welding jig. A window for the power supply heating coil to extend into is provided on one side of the protective cover. The protective cover is configured to be driven down by a lifting mechanism to cover the welding jig and form a sealed environment with the welding jig;

[0008] A buffer assembly for connecting the protective cover and the lifting mechanism;

[0009] A nitrogen system for filling nitrogen into the protective cover.

[0010] A preferred technical solution is: The buffer assembly is composed of a guide rod, a guide sleeve and a buffer spring. The guide rod is vertically fixed on the top of the protective cover. The guide sleeve is vertically fixed on the lifting end of the lifting mechanism. The guide sleeve is slidably sleeved on the guide rod. The spring is sleeved on the guide rod. One end of the spring abuts against the protective cover, and the other end of the spring abuts against the guide sleeve.

[0011] A preferred technical solution is: A limit cap corresponding to the guide sleeve is provided at the top end of the guide rod.

[0012] The preferred technical solution is that the nitrogen gas system is composed of a nitrogen gas tank, a charging pipe and a nitrogen gas valve. One end of the charging pipe is connected to the gas outlet of the nitrogen gas tank, the other end of the charging pipe is connected to the protective cover, and the nitrogen gas valve is arranged on the charging pipe.

[0013] The preferred technical solution is that a nitrogen gas concentration detection sensor is fixedly installed in the protective cover.

[0014] The preferred technical solution is that a welding temperature detection sensor is fixedly installed in the protective cover.

[0015] Due to the application of the above technical solution, the beneficial effects of the present utility model are as follows:

[0016] The nitrogen gas protection structure applied to high-frequency welding proposed by the present utility model, by arranging a protective cover above the welding jig, the protective cover is configured to be driven down by a lifting mechanism to cover the welding jig and form a sealed environment with the welding jig, and through the nitrogen gas system, nitrogen gas is filled into the protective cover to avoid the problem that the product is exposed to the air during the welding process and is easily oxidized on the surface layer of the product during high-temperature welding without protection; this structure is convenient for improving the welding production efficiency, has the characteristics of strong welding stability, high quality yield and wide production applicability, and is suitable for popularization. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the nitrogen gas protection structure related to the present utility model.

[0018] Figure 2 It is a schematic diagram of the structure of the nitrogen gas protection structure related to the present utility model after removing the protective cover. Detailed Embodiment

[0019] The following specific embodiments illustrate the implementation manners of the present utility model. Those familiar with this technology can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0020] Please refer to Figure 1 - Figure 2It should be noted that in the description of the present utility model, it should be noted that for the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0021] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Embodiment:

[0023] As Figures 1 to 2 shown, according to a general technical concept of the present utility model, a nitrogen protection structure applied to high-frequency welding is provided, including:

[0024] A welding jig 1, which is used to position the product to be welded;

[0025] A protective cover 2, which is arranged directly above the welding jig 1. One side of the protective cover 2 is provided with a window for the power supply heating coil 7 to extend into. The protective cover 2 is configured to be driven down by a lifting mechanism 3 to cover the welding jig 1 and form a sealed environment with the welding jig 1;

[0026] A buffer assembly 4, which is used to connect the protective cover 2 and the lifting mechanism 3;

[0027] A nitrogen system, which is used to fill nitrogen into the protective cover.

[0028] It should be noted that the protective cover 2 is connected to the lifting mechanism 3 through a buffer assembly 4. When the lifting mechanism 3 drives the protective cover 2 to press down and cover the welding jig 1, the buffer assembly 4 can prevent damage to the protective cover 2 and the welding jig 1 due to "hard contact", and the buffer assembly 4 also has a certain effect on improving the connection sealing performance between the protective cover 2 and the welding jig 1.

[0029] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the buffer assembly 4 is composed of a guide rod 41, a guide sleeve 42 and a buffer spring 43. The guide rod 41 is vertically fixed to the top of the protective cover 2, and the guide sleeve 42 is vertically fixed to the lifting end of the lifting mechanism 3 (in this application, the lifting end of the lifting mechanism 3 is connected to the high-frequency welding machine, and the guide sleeve 42 is fixed to the high-frequency welding machine through a bracket). The guide sleeve 42 is slidably sleeved on the guide rod 41, and the spring 43 is sleeved on the guide rod 42. One end of the spring 43 abuts against the protective cover 2, and the other end of the spring 43 abuts against the guide sleeve 42.

[0030] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, a limit cap corresponding to the guide sleeve 42 is provided at the top end of the guide rod 41 to prevent the guide rod 41 from slipping out of the guide sleeve 42.

[0031] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the nitrogen system (not shown) is composed of a nitrogen tank, a filling pipe and a nitrogen valve. One end of the filling pipe is connected to the air outlet of the nitrogen tank, and the other end of the filling pipe is connected to the protective cover 2. The nitrogen valve is provided on the filling pipe for filling nitrogen into the protective cover 2.

[0032] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, a nitrogen concentration detection sensor (not shown) is fixedly provided in the protective cover 2 for detecting the nitrogen concentration in the sealing cover 2.

[0033] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, a welding temperature detection sensor (not shown) is fixedly provided in the protective cover 2 for detecting the welding temperature.

[0034] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, it further includes a pressing cylinder 5. The pressing cylinder 5 is fixedly connected to the high-frequency welding machine through a bracket and is vertically arranged above the protective cover 2. The telescopic end of the pressing cylinder 5 is vertically downward and is used to drive the pressing pipe 6 to move up and down. The pressing pipe 6 is configured to be vertically movably inserted into the top side of the protective cover 2 for pressing the product to be welded on the welding jig 1 to ensure welding stability.

[0035] Therefore, the utility model has the following advantages:

[0036] The nitrogen protection structure applied to high-frequency welding proposed by the utility model is provided with a protective cover above the welding jig. The protective cover is configured to be driven down by a lifting mechanism to cover the welding jig and form a sealed environment with the welding jig. And through a nitrogen system, nitrogen is filled into the protective cover to prevent the product from being exposed to the air during the welding process. Without protection, it is easy to cause the problem of oxidation on the surface of the product during high-temperature welding. This structure is convenient for improving the welding production efficiency, has the characteristics of strong welding stability, high quality yield, and wide production applicability, and is suitable for popularization.

[0037] The above embodiments are only illustrative of the principles and effects of the utility model, rather than limiting the utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. Nitrogen protection structure used in high frequency welding, characterized in that: include: A welding jig, which is used to position the product to be welded; A protective cover, the protective cover is arranged directly above the welding jig, a window for the power supply and heating coil to extend into is arranged on one side of the protective cover, and the protective cover is configured to be driven down by a lifting mechanism to cover the welding jig and form a sealed environment with the welding jig; A buffer assembly, the buffer assembly being used to connect the protective cover and the lifting mechanism; A nitrogen system is used to fill nitrogen into the protective cover.

2. The nitrogen protection structure used in high frequency welding according to claim 1 is characterized in that: The buffer assembly is composed of a guide rod, a guide sleeve and a buffer spring. The guide rod is fixedly arranged on the top of the protective cover in a vertical state. The guide sleeve is fixedly arranged on the lifting end of the lifting mechanism in a vertical state. The guide sleeve can be slidably arranged on the guide rod up and down. The spring is arranged on the guide rod. One end of the spring is against the protective cover, and the other end of the spring is against the guide sleeve.

3. The nitrogen protection structure used in high frequency welding according to claim 2 is characterized in that: The top end of the guide rod is provided with a limiting cap corresponding to the guide sleeve.

4. The nitrogen protection structure used in high frequency welding according to claim 1, characterized in that: The nitrogen system is composed of a nitrogen tank, a charging pipe and a nitrogen valve. One end of the charging pipe is connected to the gas outlet of the nitrogen tank, the other end of the charging pipe is connected to the protective cover, and the nitrogen valve is arranged on the charging pipe.

5. The nitrogen protection structure used in high frequency welding according to claim 1, characterized in that: A nitrogen concentration detection sensor is built into the protective cover.

6. The nitrogen protection structure used in high frequency welding according to claim 1, characterized in that: A welding temperature detection sensor is fixedly arranged in the protective cover.

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