Induction heating brazing machine

Abstract

The utility model discloses an induction heating brazing machine which comprises a power supply cabinet, a hose and a brazing machine, an induction heating circuit is arranged in the power supply cabinet, a water pump and a circulating cooling water tank are arranged in the power supply cabinet, one end of the hose is connected with the power supply cabinet, the other end of the hose is connected with the brazing machine, and a water inlet pipe, a water return pipe, an anode cable and a cathode cable are arranged in the hose. The brazing machine comprises a shell and an induction coil, one end of the shell is provided with an end plate, the end plate is provided with an anode copper sleeve and a cathode copper sleeve, the induction coil is made of a copper pipe, and one end of the induction coil made of the copper pipe is connected with the anode copper sleeve. The utility model has the following technical effects: firstly, flammable and explosive gas is not needed, so that the safety risk to human bodies and properties is avoided; harmful gases such as carbon monoxide and carbon dioxide are not generated, and the method is environment-friendly; thirdly, the welding surface is flat, and the welding quality is high; the coil is cooled in a water passing mode, and the coil is prevented from being burnt out in the heating process.

Description

Technical Field

[0001] This utility model relates to the field of brazing technology, and in particular to an induction heating brazing machine. Background Technology

[0002] Brazing is a common machining process in the field of mechanical processing. It is a welding method in which the workpiece and the filler metal are heated to the melting temperature of the filler metal, and the liquid filler metal is used to fill the gaps in the solid workpiece to join the metals. Currently, the flame heating method is used, which requires flammable and explosive gases such as acetylene and oxygen, which can easily cause danger to people and property. Fire accidents often occur during the brazing process. In addition, harmful gases such as carbon monoxide and carbon dioxide are produced during the brazing process, which are harmful to people and the environment. Utility Model Content

[0003] The purpose of this invention is to provide a brazing machine that uses induction heating.

[0004] The technical solution of this utility model is as follows: an induction heating brazing machine, comprising a power cabinet, a flexible hose, and a brazing machine. The power cabinet contains an induction heating circuit, a water pump, and a circulating cooling water tank. One end of the flexible hose is connected to the power cabinet, and the other end is connected to the brazing machine. The flexible hose contains an inlet pipe, a return pipe, a positive cable, and a negative cable. The brazing machine includes a housing and an induction coil. One end of the housing is fitted with an end plate, on which a positive copper sleeve and a negative copper sleeve are mounted. The induction coil is made of copper tubing, with one end connected to the positive copper sleeve and the other end connected to the negative copper sleeve. One end of the inlet pipe is connected to the positive copper sleeve, and the other end is connected to the water pump. One end of the return pipe is connected to the negative copper sleeve, and the other end is connected to the circulating cooling water tank. One end of the positive cable is connected to the positive copper sleeve, and the other end is connected to the positive terminal of the induction heating circuit load. One end of the negative cable is connected to the negative copper sleeve, and the other end is connected to the negative terminal of the induction heating circuit load.

[0005] The induction coil, made of copper tubing, has sealing rings installed at the contact surfaces with the positive and negative copper sleeves.

[0006] An insulating layer is wrapped around the induction coil, which is made of copper tubing. The connection end of the induction coil is equipped with a connecting block, which is bolted to the end plate.

[0007] The return water pipe is connected to the circulating cooling water tank through the radiator.

[0008] A handle is mounted on the casing.

[0009] A bracket is installed on the power cabinet, and a flexible hose hanger and a brazing machine hanger are installed on the bracket. A hook is installed at one end of the brazing machine hanger, and a lifting ring is installed on the shell. The hook is hooked onto the lifting ring.

[0010] The brazing machine is equipped with an elastic rope reel.

[0011] This utility model has the following technical advantages: First, it does not require flammable or explosive gases, so it does not pose a safety risk to human health or property; second, it does not produce harmful gases such as carbon monoxide or carbon dioxide, making it environmentally friendly; third, the welding surface is flat and the welding quality is high; and the coil is cooled by water circulation, which avoids burning out the coil during the heating process. Attached Figure Description

[0012] Figure 1 This is the main view of the induction heating brazing machine of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the induction heating brazing machine of this utility model.

[0014] Figure 3 This is the front view of the brazing machine of this utility model.

[0015] Figure 4 yes Figure 3 A bottom view.

[0016] Figure 5 A partial cross-sectional view of a utility model brazing machine.

[0017] Figure 6 yes Figure 5 A magnified view of the area marked A.

[0018] Figure 7 Induction heating circuit diagram. Detailed Implementation

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, an induction heating brazing machine includes a power supply cabinet 1, a flexible hose 2, and a brazing machine 3. The power supply cabinet houses an induction heating circuit 1-1. The power supply cabinet 1 also contains a water pump 1-2 and a circulating cooling water tank 1-3. One end of the flexible hose 2 is connected to the power supply cabinet 1, and the other end is connected to the brazing machine 3. The flexible hose 2 contains an inlet pipe 2-1, a return pipe 2-2, a positive cable 2-3, and a negative cable 2-4. The brazing machine 3 includes a housing 3-1 and an induction coil 3-2. One end of the housing 3-1 is fitted with an end plate 3-3, on which a positive copper sleeve 3-4 and a negative copper sleeve 3-5 are mounted. The induction coil 3-2 described above is made of copper tubing. One end of the induction coil 3-2 made of copper tubing is connected to the positive copper sleeve 3-4, and the other end is connected to the negative copper sleeve 3-5. One end of the water inlet pipe 2-1 is connected to the positive copper sleeve 3-4, and the other end is connected to the water pump 1-2. One end of the return water pipe 2-2 is connected to the negative copper sleeve 3-5, and the other end is connected to the circulating cooling water tank 1-3. One end of the positive cable 2-3 is connected to the positive copper sleeve 3-4, and the other end is connected to the positive load 1-11 of the induction heating circuit 1-1. One end of the negative cable 2-4 is connected to the negative copper sleeve 3-5, and the other end is connected to the negative load 1-12 of the induction heating circuit 1-1.

[0020] The induction coil 3-2, made of copper tube, is fitted with sealing rings 3-6 at the contact surfaces with the positive copper sleeve 3-4 and the negative copper sleeve 3-5.

[0021] An insulating layer 3-7 is wrapped around the induction coil 3-2 made of copper tube. The connecting end of the induction coil 3-2 is equipped with a connecting block 3-8, which is mounted on the end plate 3-3 by bolts 3-9.

[0022] The return water pipe 2-2 is connected to the circulating cooling water tank 1-3 through the radiator 1-4.

[0023] A handle 3-10 is mounted on the housing 3-1.

[0024] A bracket 4 is installed on the power cabinet 1. A flexible hose hanger 5 and a brazing machine hanger 6 are installed on the bracket 4. A hook 6-1 is installed at one end of the brazing machine hanger 6. A lifting ring 3-11 is installed on the housing 3-1. The hook 6-1 is hooked onto the lifting ring 3-11.

[0025] The brazing machine is suspended by a flexible rope disc 6-2.

[0026] The aforementioned induction heating circuit is a high-power, medium-frequency induction heating circuit, comprising: a three-phase rectifier bridge, an IGBT inverter driver, an IGBT half-bridge inverter, a mainboard PLC, a touch screen, and a switching power supply; the three-phase power supply A, B, and C are connected to the A, B, and C terminals of the three-phase rectifier bridge, which is connected to the IGBT half-bridge inverter. A pre-charging resistor R1, a charging relay coil J, a filter circuit, and a RC snubber circuit are connected between the three-phase rectifier bridge and the IGBT half-bridge inverter. The filter circuit consists of a parallel filter capacitor C1 and a discharge resistor R2. The RC snubber circuit includes capacitors C2 and C3 connected in series, and resistors R3 and R4 connected in series. Capacitors C2 and C3 are connected in parallel with the series resistors R3 and R4, and capacitors C2 and C3 are connected to resistors R3 and R4. The IGBT half-bridge inverter is connected to the induction coil L2. The charging relay coil J's Kc1 and Kc2 terminals are connected to the Kc1 / Kc2 pins of the main board PLC. The filter circuit is connected to the input voltage detection pin of the main board PLC. The IGBT inverter drive is connected to the inverter drive pins of the IGBT half-bridge inverter and the main board PLC respectively. The touch screen is connected to the Rs485 pin of the main board PLC. The switching power supply is connected to the DC24V pin of the main board PLC. An input current sampling coil L1 is connected to the three-phase power supply and is connected to the input current detection pin of the main board PLC. The three-phase power supply A, B, and C are connected to the A, B, and C three-phase detection pins of the main board PLC. An output current sampling coil L3 is connected to the connection point between the IGBT half-bridge inverter and the induction coil L2 and is connected to the output current detection pin of the main board PLC. Start, stop, and detection buttons are connected to the signal input pins of the main board PLC.

Claims

1. An induction heating brazing machine, comprising a power supply cabinet (1), a flexible hose (2), and a brazing machine (3), wherein an induction heating circuit (1-1) is installed in the power supply cabinet, characterized in that: A water pump (1-2) and a circulating cooling water tank (1-3) are installed in the power cabinet (1). One end of a hose (2) is connected to the power cabinet (1), and the other end is connected to a brazing machine (3). The hose (2) contains an inlet pipe (2-1), a return pipe (2-2), a positive cable (2-3), and a negative cable (2-4). The brazing machine (3) includes a housing (3-1) and an induction coil (3-2). One end of the housing (3-1) is equipped with an end plate (3-3). A positive copper sleeve (3-4) and a negative copper sleeve (3-5) are installed on the end plate (3-3). The induction coil (3-2) is made of copper tubing. One end of the induction coil (3-2) is connected to the positive copper sleeve (3-4), and the other end is connected to the negative copper sleeve (3-5). One end of the water inlet pipe (2-1) is connected to the positive copper sleeve (3-4), and the other end is connected to the water pump (1-2). One end of the return water pipe (2-2) is connected to the negative copper sleeve (3-5), and the other end is connected to the circulating cooling water tank (1-3). One end of the positive cable (2-3) is connected to the positive copper sleeve (3-4), and the other end is connected to the positive load (1-11) of the induction heating circuit (1-1). One end of the negative cable (2-4) is connected to the negative copper sleeve (3-5), and the other end is connected to the negative load (1-12) of the induction heating circuit (1-1).

2. The induction heating brazing machine according to claim 1, characterized in that: The induction coil (3-2) made of copper tube is fitted with a sealing ring (3-6) at the contact surface with the positive copper sleeve (3-4) and the negative copper sleeve (3-5).

3. The induction heating brazing machine according to claim 1, characterized in that: An insulating layer (3-7) is wrapped around the induction coil (3-2) made of copper tube. A connecting block (3-8) is installed at the connecting end of the induction coil (3-2). The connecting block (3-8) is mounted on the end plate (3-3) by bolts (3-9).

4. The induction heating brazing machine according to claim 1, characterized in that: The return water pipe (2-2) is connected to the circulating cooling water tank (1-3) through the radiator (1-4).

5. The induction heating brazing machine according to claim 1, characterized in that: A handle (3-10) is mounted on the housing (3-1).

6. The induction heating brazing machine according to claim 1, characterized in that: A bracket (4) is installed on the power cabinet (1). A hose hanger (5) and a brazing machine hanger (6) are installed on the bracket (4). A hook (6-1) is installed at one end of the brazing machine hanger (6). A lifting ring (3-11) is installed on the housing (3-1). The hook (6-1) is hooked onto the lifting ring (3-11).

7. An induction heating brazing machine according to claim 5, characterized in that: The brazing machine is suspended (6) by an elastic loop rope disc (6-2).

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