Fingerprint lock control device of electric welding machine

Abstract

The utility model discloses a fingerprint lock control device of an electric welding machine, which belongs to the field of electric welding machines and comprises an alternating current contactor (3), a transformer (4), a voltage stabilizer (5), a relay (6), a controller (7) and a fingerprint contactor (8), and the fingerprint contactor (8) is connected with the controller (7). The controller (7) is connected with the voltage stabilizer (5), the voltage stabilizer (5) is connected with the transformer (4), and the transformer (4) is connected with the alternating current contactor (3); the controller (7) is also connected with the alternating current contactor (3) through the relay (6) to form a loop; the alternating current contactor (3) is respectively connected with the power supply (1) and the electric welding machine working switch (2). The working stability of the fingerprint lock electric welding machine is improved, the short-circuit tripping phenomenon is avoided, and long-term use of the fingerprint lock electric welding machine is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of electric welding machines, and specifically relates to a fingerprint lock control device for electric welding machines. Background Art

[0002] The welding machine is made based on the principle of inductance. When the inductance is connected and disconnected, a huge voltage change will occur. The high-voltage arc generated when the positive and negative poles are short-circuited instantly is used to melt the solder on the welding rod to achieve the purpose of atomic bonding. The structure of the welding machine is very simple. It is a high-power transformer. The welding machine can generally be divided into two types according to the type of output power supply, one is AC power supply; the other is DC power supply. Since welding construction is a special operation, it requires professional certified personnel to operate. In order to prevent other unrelated personnel from operating the welding machine, a welding machine with intelligent fingerprint lock unlocking is produced. However, the intelligent fingerprint lock fails to control under the strong current magnetic field when the welding machine is working, and the welding machine trips, which makes the welding machine unable to work for a long time.

[0003] Patent (202022131993.X) discloses an electric welder with an intelligent fingerprint lock, which belongs to the field of electric welders, and includes a main body, a filter box is fixedly installed on the left side above the main body, a filter screen is detachably installed on the upper part of the filter box, an activated carbon filter layer is detachably connected to the bottom of the filter screen, and one end of a discharge pipe is detachably connected to the bottom of the filter box, and the other end of the discharge pipe extends to the outside of the filter box. The utility model protects the fingerprint module by using a protective device, thereby increasing the service life of the fingerprint module, and can collect, filter and discharge the welding smoke generated by the electric welder during welding, thereby improving the environmental protection of the electric welder.

[0004] It can be seen from the above patent that the current device and method cannot effectively solve the circuit influence problem caused by adding a fingerprint unlocking module to the welding machine, which will make the working stability of the welding machine worse and cannot achieve long-term and sustained operation. Now there is an urgent need for a new device or method to effectively solve this shortcoming. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and proposes a fingerprint lock control device for an electric welder to improve the working stability of the fingerprint lock electric welder, prevent the fingerprint lock electric welder from short circuit tripping, and thus ensure the long-term use of the fingerprint lock electric welder.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a fingerprint lock control device for an electric welding machine, comprising a power supply 1 and an electric welding machine working switch 2, the device comprising an AC contactor 3, a transformer 4, a voltage stabilizer 5, a relay 6, a controller 7, and a fingerprint contactor 8, wherein the fingerprint contactor 8 is connected to the controller 7; the controller 7 is connected to the voltage stabilizer 5, the voltage stabilizer 5 is connected to the transformer 4, and the transformer 4 is connected to the AC contactor 3; the controller 7 is also connected to the AC contactor 3 through the relay 6 to form a loop; the AC contactor 3 is respectively connected to the power supply 1 and the electric welding machine working switch 2.

[0007] Further, when the welding machine power supply 1 is turned on:

[0008] The transformer 4 converts the voltage of the power supply 1 into the voltage required by the controller 7 and transmits it to the voltage stabilizer 5;

[0009] The voltage stabilizer 5 stabilizes the voltage required by the controller 7 and sends it to the controller 7;

[0010] After the fingerprint contactor 8 recognizes the fingerprint, a control signal is sent to the relay 6 through the controller 7;

[0011] After the relay 6 receives the control signal, its normally open interface is closed and the entire circuit is turned on;

[0012] After the whole circuit is turned on, the AC contactor 3 controls the welding machine working switch 2 to close according to the control signal.

[0013] Furthermore, the fingerprint contactor 8 is provided with a housing 9 with a top opening, the housing 9 is provided with an internal thread on the outside, the welding machine control panel is provided with a corresponding external thread, and the housing 9 is connected to the welding machine control panel through a thread. A protective cover 10 is provided at the top opening of the housing 9, and the protective cover 10 is movably connected to the housing 9.

[0014] Furthermore, the controller 7, relay 6, voltage stabilizer 5, transformer 4, and AC contactor 3 are connected to the circuit board by screws.

[0015] Furthermore, the transformer 4 and the voltage stabilizer 5 are integrated into one body and arranged on a circuit board.

[0016] The technical effects of the utility model are as follows: (1) it can effectively improve the stability of the electric welding machine after adding a fingerprint lock, and will not cause short circuit tripping; (2) it can improve the control efficiency and use effect of fingerprint control, and the effect is real and reliable; (3) it has a reasonable structure, simple principle and low cost; (4) the overall device is connected to the circuit board with screws, which will not increase the size of the electric welding machine and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a fingerprint lock control device for an electric welding machine of the utility model:

[0018] Figure 2 The utility model is a schematic diagram of a welding machine control panel of a fingerprint lock control device of an electric welding machine.

[0019] Markings in the figure are: 1 is a power supply, 2 is a welding machine working switch, 3 is an AC contactor, 4 is a transformer, 5 is a voltage stabilizer, 6 is a relay, 7 is a controller, 8 is a fingerprint contactor, 9 is a housing of the fingerprint contactor, and 10 is a protective cover. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.

[0021] A fingerprint lock control device for an electric welding machine comprises a power supply 1 and an electric welding machine working switch 2. Figure 1 As shown, the device includes an AC contactor 3, a transformer 4, a voltage stabilizer 5, a relay 6, a controller 7, and a fingerprint contactor 8, wherein the fingerprint contactor 8 is connected to the controller 7; the controller 7 is connected to the voltage stabilizer 5, the voltage stabilizer 5 is connected to the transformer 4, the transformer 4 is connected to the AC contactor 3; the controller 7 is also connected to the AC contactor 3 through the relay 6 to form a loop; the AC contactor 3 is respectively connected to the power supply 1 and the welding machine working switch 2. The utility model has a reasonable overall structure, a simple principle, and a low cost.

[0022] When it is implemented specifically, first turn on the welding machine power supply 1, then:

[0023] The transformer 4 converts the voltage of the power supply 1 into the voltage required by the controller 7. Due to the voltage change and the strong magnetic field generated when the electric welder is working, the voltage required by the controller 7 will be unstable, thereby causing the fingerprint lock to mistakenly open the working switch 2 of the electric welder, that is, a circuit short circuit tripping phenomenon occurs. In order to solve this problem, the utility model is provided with a voltage stabilizer 5. The voltage stabilizer 5 stabilizes the voltage required by the controller 7 and sends it to the controller 7, thereby improving the circuit stability and ensuring the long-term use of the device.

[0024] Then, the fingerprint is used to trigger the fingerprint contactor 8. After the fingerprint contactor 8 recognizes the fingerprint, the control signal is sent to the relay 6 through the controller 7. The main function of the controller 7 is to control the connection and segmentation of the welding machine power supply 1 according to the trigger signal of the fingerprint contactor 8; after the relay 6 receives the control signal sent by the controller 7, its normally open interface is closed, the overall circuit is turned on, the relay 6 has strong anti-interference ability and good performance stability, which improves the stability of the control signal output and further ensures the stability of the fingerprint lock control device; after the overall circuit is turned on, the AC contactor 3 can control the welding machine working switch 2 to close according to the control signal, and the power supply 1 provides the welding machine with working voltage, so that the welding machine starts to work. Based on the above, after the fingerprint is recognized, the welding machine fingerprint lock can control the welding machine to work in time, improve the control efficiency, and ensure the real and reliable use effect of the fingerprint lock.

[0025] To ensure the structural stability of the overall device, Figure 2 As shown, the fingerprint contactor 8 is provided with a housing 9 with a top opening on the outside, the housing 9 is provided with an internal thread on the outside, and the welding machine control panel is provided with a corresponding external thread, the housing 9 is connected to the welding machine control panel through a thread, and in specific implementation, the housing 9 can be made of stainless steel waterproof material. Further, in order to protect the sensitivity of the fingerprint recognition part of the fingerprint contactor 8 exposed to the outside, a protective cover 10 is provided at the top opening of the housing 9, and the protective cover 10 is movably connected to the housing 9 for easy use.

[0026] Meanwhile, the controller 7, the relay 6, the voltage stabilizer 5, the transformer 4 and the AC contactor 3 are connected to the circuit board by screws, which does not increase the size of the electric welding machine and is convenient for disassembly and replacement.

[0027] Furthermore, the transformer 4 and the voltage stabilizer 5 are integrated and arranged on a circuit board, thereby reducing the space for arranging components.

[0028] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A fingerprint lock control device for an electric welding machine, comprising a power supply (1) and an electric welding machine working switch (2), characterized in that: The device comprises an AC contactor (3), a transformer (4), a voltage stabilizer (5), a relay (6), a controller (7), and a fingerprint contactor (8), wherein the fingerprint contactor (8) is connected to the controller (7); the controller (7) is connected to the voltage stabilizer (5), the voltage stabilizer (5) is connected to the transformer (4), and the transformer (4) is connected to the AC contactor (3); the controller (7) is also connected to the AC contactor (3) through the relay (6) to form a loop; and the AC contactor (3) is respectively connected to a power source (1) and a welding machine working switch (2).

2. The fingerprint lock control device for an electric welding machine according to claim 1, characterized in that: When the welding machine power (1) is turned on: The transformer (4) converts the voltage of the power supply (1) into the voltage required by the controller (7) and transmits the voltage to the voltage stabilizer (5); The voltage stabilizer (5) stabilizes the voltage required by the controller (7) and sends it to the controller (7); After the fingerprint contactor (8) recognizes the fingerprint, a control signal is sent to the relay (6) through the controller (7); After the relay (6) receives the control signal, its normally open interface is closed and the entire circuit is turned on; After the overall circuit is turned on, the AC contactor (3) controls the welding machine working switch (2) to close according to the control signal.

3. The fingerprint lock control device for an electric welding machine according to claim 1, characterized in that: The fingerprint contactor (8) is provided with a shell (9) with a top opening on the outside, the shell (9) is provided with an internal thread on the outside, the welding machine control panel is provided with a corresponding external thread, and the shell (9) is connected to the welding machine control panel via threads.

4. The fingerprint lock control device for an electric welding machine according to claim 3 is characterized in that: A protective cover (10) is provided at the top opening of the shell (9), and the protective cover (10) is movably connected to the shell (9).

5. The fingerprint lock control device for an electric welding machine according to claim 1, characterized in that: The controller (7), relay (6), voltage stabilizer (5), transformer (4) and AC contactor (3) are connected to the circuit board via screws.

6. The fingerprint lock control device for an electric welding machine according to claim 1, characterized in that: The transformer (4) and the voltage stabilizer (5) are combined into one body and arranged on a circuit board.

Images