A high frequency welding machine

Abstract

The utility model specifically relates to a high-frequency welding machine, including a frame and a transport mechanism, the transport mechanism is installed on the frame, a welding station and a cooling station are arranged on the frame, a hydrogen-nitrogen mixed gas port is arranged on the welding station, a nitrogen port is arranged on the cooling station, a welding mechanism is arranged on the frame, the welding mechanism is provided with an upper coil head, one end of the upper coil head extends into the welding station, a lifting mechanism is arranged in the welding station, a lower coil head is arranged on the lifting mechanism, and the upper coil head corresponds to the lower coil head. The beneficial effect of the utility model is that the structure forms an independent space through the welding station, and the hydrogen-nitrogen mixed gas port is used to input the hydrogen-nitrogen mixed gas, and the nitrogen port of the cooling station inputs the nitrogen gas to implement cooling, which can ensure that the welding process and the surface of the product after welding are not oxidized, and the product is quickly cooled after welding, thereby improving the product quality.

Description

Technical Field

[0001] The utility model specifically relates to a high-frequency welding machine. Background Art

[0002] With the continuous development of science and technology, industrial production focuses on the production of small parts, especially the connection between the outer cap and the touch knife. The touch knife and the outer cap are connected by positioning and welding. In the process of implementing the welding process, because the workpiece is a round body and the welding part is a ring part, traditional manual welding operations are required. The traditional processing method uses manual brazing without special welding machinery. This production process has low production efficiency, unstable welding quality, and is prone to product failure due to human factors. The production cost is high, and the rework rate of the product after testing is high. Moreover, the labor intensity of the workers is also high, which cannot meet the needs of modern large-scale production.

[0003] In view of the shortcomings of this traditional production method, a domestic invention patent application is published, the name of which is: a high-frequency welding machine, the application number of which is: CN201810440217.2, and its structure includes an outer cap feeding unit, a touch knife feeding unit, a riveting unit, an automatic welding unit and a blanking unit, wherein: the outer cap feeding unit, the touch knife feeding unit, the riveting unit, the automatic welding unit and the blanking unit are arranged on the frame in sequence, and form an automated equipment for one-way flow processing; the outer cap feeding unit and the touch knife feeding unit The discharge ports are arranged in sequence to form a pre-processed structure with the touch knife and the outer cap distributed up and down; the riveting unit is a riveting processing machine, which applies pressure up and down to rivet the outer cap and the touch knife together; the automatic welding unit includes multiple groups of automatic welding machines arranged in parallel, and each welding machine welds the outer cap and the touch knife at the joint through two groups of symmetrically arranged high-frequency welding machine sensors; the unloading unit includes a finished product discharge transmission channel, which can be connected with the discharge ports of multiple groups of automatic welding machines along the line to form a comprehensive finished product discharge structure. There are still some shortcomings in the production process: during the welding process, the product is exposed to the outside world, easy to contact with the air and easy to oxidize, which directly affects the product quality. Summary of the invention

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a high-frequency welding machine that can ensure that the surface of the product is not oxidized during the welding process and after welding, and the product is quickly cooled after welding, thereby improving the product quality.

[0005] According to the utility model, a high-frequency welding machine includes a frame and a conveying mechanism, the conveying mechanism is installed on the frame, a welding station and a cooling station are arranged on the frame, a hydrogen-nitrogen mixed gas port is arranged on the welding station, a nitrogen port is arranged on the cooling station, a welding mechanism is arranged on the frame, the welding mechanism is provided with an upper coil head, one end of the upper coil head extends into the welding station, a lifting mechanism is arranged in the welding station, a lower coil head is arranged on the lifting mechanism, and the upper coil head corresponds to the lower coil head.

[0006] Specifically, the transport mechanism includes a transport frame, a motor, a rotating wheel and a belt. The motor is installed on the transport frame and is also connected to the rotating wheel. The belt is installed on the rotating wheel. The transport frame is also connected to another rotating wheel, and the other end of the belt is installed on the other rotating wheel.

[0007] Specifically, the frame is provided with a pre-feeding station, and the pre-feeding station is provided with a pre-mixing port.

[0008] Specifically, the hydrogen-nitrogen mixed gas inlet is located on the top surface of the welding station, and the nitrogen inlet is located on the top surface of the cooling station.

[0009] Specifically, a push rod is provided in the lifting mechanism, one end of the push rod is connected to the bottom surface of the lower coil head, the push rod extends outside the bottom surface of the lifting mechanism, and an auxiliary cylinder is connected below the push rod.

[0010] Specifically, the frame is provided with a cylinder frame, a cylinder and a valve, the cylinder frame is fixed on the frame, the cylinder is installed on the cylinder frame, and the cylinder is connected to the valve.

[0011] The beneficial effects of the utility model are as follows: the structure forms an independent space through the welding station, and cooperates with the hydrogen-nitrogen mixed gas port to input hydrogen and nitrogen gas, and the nitrogen port of the cooling station inputs nitrogen to implement cooling, which can ensure that the surface of the product is not oxidized during the welding process and after welding, and the product is quickly cooled after welding, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings.

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the top view structure.

[0015] Figure 3 It is a schematic diagram of the transport mechanism structure.

[0016] Figure 4 It is a schematic diagram of the connection between the welding unit, the cooling unit and the advance unit.

[0017] Figure 5 yes Figure 4 A schematic diagram of the structure from another angle.

[0018] Figure 6 It is a schematic diagram of the lifting mechanism structure.

[0019] Figure 7 It is a schematic diagram of the cross-sectional structure of the lifting mechanism.

[0020] Figure 8 It is a schematic diagram of the welding state structure of the utility model.

[0021] The markings as shown in the accompanying drawings are as follows: frame 1, transport mechanism 2, metal product 3, cylinder 4, valve 401, welding station 5, hydrogen-nitrogen mixed gas port 501, cooling station 6, nitrogen port 601, pre-feed station 7, welding mechanism 8, upper coil head 801, lifting mechanism 9, lower coil head 901, push rod 902. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] Reference below Figures 1 to 8 A high-frequency welding machine according to an embodiment of the utility model is described, including a frame 1 and a conveying mechanism 2, the conveying mechanism 2 is installed on the frame 1, a welding station 5 and a cooling station 6 are provided on the frame 1, the welding station 5 is provided with a hydrogen-nitrogen mixed gas port 501, the cooling station 6 is provided with a nitrogen port 601, the frame 1 is provided with a welding mechanism 8, the welding mechanism 8 is provided with an upper coil head 801, one end of the upper coil head 801 extends into the welding station 5, a lifting mechanism 9 is provided in the welding station 5, a lower coil head 901 is provided on the lifting mechanism 9, and the upper coil head 801 corresponds to the lower coil head 901.

[0024] This structure forms an independent space through the welding station 5, and cooperates with the hydrogen-nitrogen mixed gas port 501 to input hydrogen and nitrogen gas, and the nitrogen port 601 of the cooling station 6 inputs nitrogen gas to implement cooling, which can ensure that the surface of the product is not oxidized during the welding process and after welding, and the product is quickly cooled after welding, thereby improving the product quality. Among them, the rapid cooling effect of nitrogen gas solves the shortcomings of the traditional reliance on natural cooling, which causes the welding point to produce oxidation reaction with the air.

[0025] High-frequency welding machines are different from other welding machines. Their functions and uses are not limited to single welding. High-frequency welding machines can not only be used for welding of various metal materials, but also for processes such as heat penetration, smelting, and heat treatment. Welding is just one of its many uses. The working principle is: first, a set of unique electronic circuits in the high-frequency welding machine converts the low-frequency alternating current (50Hz) input from the power grid into high-frequency alternating current (generally above 20,000Hz). High-frequency current is added to the upper coil head 801 and the lower coil head 901, and is converted into a high-frequency magnetic field using the principle of electromagnetic induction, and acts on the metal object in the magnetic field; using the eddy current effect, an induced current proportional to the magnetic field strength is generated in the metal object. This eddy current is affected by the skin effect. The higher the frequency, the more concentrated it is on the surface of the metal object. When the eddy current flows in the metal object, it will generate heat using the principle of current thermal effect with the help of the inherent resistance value inside. This heat is generated directly inside the object and can instantly melt the required welding position of the metal product.

[0026] The lower coil head 901 is controlled to move up and down by the lifting mechanism 9, thereby controlling the distance between the upper coil head 801 and the lower coil head 901. In addition, the hydrogen-nitrogen mixed gas port 501 is connected to a gas tank through a gas pipe, and the gas tank can store hydrogen and nitrogen gases. Similarly, the nitrogen port 601 is connected to another gas tank through a gas pipe, and the other gas tank can store nitrogen gas, and the nitrogen gas is used for rapid refrigeration.

[0027] The transport mechanism 2 is used to transport metal products. The transport mechanism 2 of this structure includes a transport frame, a motor 201, a rotating wheel 202 and a belt 203. The motor 201 is installed on the transport frame, and the motor 201 is also connected to the rotating wheel 202. The belt 203 is installed on the rotating wheel 202. The transport frame is also connected to another rotating wheel, and the other end of the belt 203 is installed on another rotating wheel. The metal product is placed on the belt 203. The metal product is transported to the welding station 5 through the transport mechanism 2, and the hydrogen and nitrogen mixed gas port 501 inputs hydrogen and nitrogen gas. When the hydrogen and nitrogen gas reaches a certain concentration, high-frequency welding is performed. The welding part of the metal product is sent to between the upper coil head 801 and the lower coil head 901 through the transport mechanism 2, and the lower coil head 901 is pushed upward by the lifting mechanism 9 to make the lower coil head 901 close to the upper coil head 801. The lower coil head 901 and the upper coil head 801 are respectively passed through high-frequency alternating current, which is convenient for high-frequency welding. After completion, the lower coil head 901 is reset through the lifting mechanism 9, waiting for the next metal product to enter the welding station 5. The welded metal product enters the cooling station 6 for cooling, and then is transported outside the cooling station 6 to wait for processing by the staff.

[0028] The frame 1 is provided with a pre-feeding station 7, and the pre-feeding station 7 is provided with a pre-mixing port 701. The pre-feeding station 7 is located at the entrance end of the welding station 5, and the pre-mixing port 701 can input hydrogen and nitrogen gas. In addition, the hydrogen and nitrogen mixed gas port 501 of the present structure is located on the top surface of the welding station 5, and the nitrogen port 601 is located on the top surface of the cooling station 6, which facilitates installation.

[0029] The lifting mechanism 9 of this structure is provided with a push rod 902, one end of which is connected to the bottom surface of the lower coil head 901, and the push rod 902 extends outside the bottom surface of the lifting mechanism 9, and an auxiliary cylinder is connected below the push rod 902. The auxiliary cylinder is fixed to the top surface of the frame 1, and a sealing plate is provided on the top surface of the frame 1, and the position of the auxiliary cylinder is fixed by screws.

[0030] The frame 1 of the present structure is provided with a cylinder frame, a cylinder 4 and a valve 401, the cylinder frame is fixed on the frame 1, the cylinder 4 is mounted on the cylinder frame, and the cylinder 4 is connected to the valve 401. The cylinder 4 can push the valve 401 to move up and down, close the output port of the cooling station 6, and implement sealing or opening.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high frequency welding machine, comprising a frame (1) and a transport mechanism (2), wherein the transport mechanism (2) is mounted on the frame (1), and characterized in that: A welding station (5) and a cooling station (6) are provided on the frame (1); a hydrogen-nitrogen mixed gas port (501) is provided on the welding station (5); a nitrogen gas port (601) is provided on the cooling station (6); a welding mechanism (8) is provided on the frame (1); the welding mechanism (8) is provided with an upper coil head (801); one end of the upper coil head (801) extends into the welding station (5); a lifting mechanism (9) is provided in the welding station (5); a lower coil head (901) is provided on the lifting mechanism (9); the upper coil head (801) corresponds to the lower coil head (901).

2. A high frequency welding machine according to claim 1, characterized in that: The transport mechanism (2) comprises a transport frame, a motor (201), a rotating wheel (202) and a belt (203); the motor (201) is mounted on the transport frame, the motor (201) is also connected to the rotating wheel (202), the belt (203) is mounted on the rotating wheel (202), the transport frame is also connected to another rotating wheel, and the other end of the belt (203) is mounted on the other rotating wheel.

3. A high frequency welding machine according to claim 1, characterized in that: The frame (1) is provided with a pre-feeding station (7), and the pre-feeding station (7) is provided with a pre-mixing port (701).

4. A high frequency welding machine according to claim 1, characterized in that: The hydrogen-nitrogen mixed gas inlet (501) is located on the top surface of the welding station (5), and the nitrogen gas inlet (601) is located on the top surface of the cooling station (6).

5. The high frequency welding machine according to claim 1, characterized in that: The lifting mechanism (9) is provided with a push rod (902), one end of which is connected to the bottom surface of the lower coil head (901), the push rod (902) extends outside the bottom surface of the lifting mechanism (9), and an auxiliary cylinder is connected below the push rod (902).

6. A high frequency welding machine according to claim 1, characterized in that: The frame (1) is provided with a cylinder frame, a cylinder (4) and a valve (401); the cylinder frame is fixed to the frame (1); the cylinder (4) is mounted on the cylinder frame; and the cylinder (4) is connected to the valve (401).

Images