CN201423487Y - A small energy-saving electric welding machine - Google Patents

Abstract

The utility model relates to a small energy-saving electric welding machine, which is the improvement of the structure of the existing electric welding machine and has the advantages of small volume,light weight and energy saving. The electric welding machine comprises a box body and is structurally characterized in that an amperemeter, a pole, a switch and a power indicating lamp are arranged onthe front face of the box body, a power plug and a radiation hole are arranged on the side face of the box body, a radiator fan motor is arranged in the radiation hole, a handle is arranged at the upper part of the box body, the pole on the front side of the box body is connected with an electrode holder through a conducting wire, and the radiator fan motor, the pole, the switch, the power indicating lamp and the amperemeter are respectively connected with a working circuit board in the box body.

Description

A small energy-saving electric welding machine

Technical field:

The utility model relates to the improvement of the structure of an electric welding machine.

Background technique:

Most of the existing electric welding machines are those with large volume and high power consumption used in large-scale projects, and this kind of electric welding machine is very inconvenient when used for some delicate welding operations, not only is it very heavy to carry, but also If the welding point is required to be very small, it cannot be done with a high-power electric welding machine.

Utility model content:

The utility model aims at the above problems and provides a small energy-saving electric welding machine with small volume, light weight and energy saving.

In order to achieve the above object, the utility model adopts the following technical scheme. The utility model includes a box body. The main points of the box body are provided with an ammeter, electrodes, switches and power indicator lights on the front side of the box body, and a power plug and a heat dissipation hole are arranged on the side of the box body. , there is a heat dissipation fan motor in the heat dissipation hole, and a handle is arranged on the upper part of the box body. board connected.

The beneficial effects of the utility model:

Since the front of the box body of the utility model is provided with an ammeter, electrodes, switches and power indicator lights, a power plug and a cooling hole are arranged on the side of the box body, a cooling fan motor is arranged in the cooling hole, and a handle is arranged on the upper part of the box body. The electrodes on the front of the box are connected to the welding handle through wires, and the cooling fan motor, electrodes, switches, power indicator lights and ammeter are respectively connected to the working circuit board in the box, so the structure is simple, the power consumption is small; the volume is small, the weight is light, and it is convenient carry.

Description of drawings:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic circuit diagram of the utility model.

Detailed ways:

The utility model includes a box body 7, the front of the box body 7 is provided with an ammeter 9, an electrode 10, a switch 11 and a power indicator light 6, and a power plug 12 and a cooling hole 5 are arranged on the side of the box body 7, and a cooling hole 5 is arranged in the cooling hole 5. Cooling fan motor 4, the upper part of box body 7 is provided with handle 8, and the electrode 10 on the front of box body 7 is connected with welding handle 1 through wire 2, and cooling fan motor 4, electrode 10, switch 11, power indicator light 6 and ammeter 9 are respectively It is connected with the working circuit board 3 in the box body 7 .

As shown in Figure 2, the working circuit board 3 includes a switch K, a fuse FU, a power indicator VD, resistors R1, R2, R3, R4, RP, a rectifier bridge B, a thyristor VS, a capacitor C, and an ammeter A. N-channel junction field effect transistor T and transformer L. The positive pole of the thyristor VS is connected to the upper end of the third resistor R3, the upper end of the fourth resistor R4 and the right end of the rectifier bridge B respectively, and the negative pole of the thyristor VS It is connected to the positive electrode of the ammeter A, the control electrode of the thyristor VS is respectively connected to the upper end of the second resistor R2 and the source of the N-channel junction field effect transistor T, and the lower end of the third resistor R3 is connected to the N-channel junction field effect transistor T. The drain of the effect transistor T is connected, the lower end of the fourth resistor R4 is connected with the fixed end of the variable resistor RP, and the variable end of the variable resistor RP is respectively connected with the gate of the N-channel junction field effect transistor T and the terminal of the capacitor C. The upper end is connected, the lower end of the capacitor C is respectively connected with the lower end of the second resistor R2, the negative pole of the ammeter A and the left end of the rectifier bridge B, the lower end of the rectifier bridge B is connected with one input end of the transformer L, and the other input end of the transformer L is respectively Connect with one input end of the cooling fan motor M, the negative pole of the power indicator VD and one end of the switch K, and the other input end of the cooling fan motor M is respectively connected with the upper end of the rectifier bridge B, the upper end of the first resistor R1 and the fuse FU The lower end of the first resistor R1 is connected to the positive pole of the power indicator VD, the two output ends of the transformer L are respectively connected to the electrodes 10 on the box body 7, the other end of the fuse FU and the other end of the switch K are connected to the power supply Plug 12 is connected.

Claims (2)

1, a kind of miniature energy-saving electric welding machine, comprise casing (7), it is characterized in that casing (7) front is provided with ammeter (9), electrode (10), switch (11) and power supply indicator (6), be provided with attaching plug (12) and louvre (5) in the side of casing (7), be provided with radiator fan motor (4) in the louvre (5), the top of casing (7) is provided with handle (8), the positive electrode (10) of casing (7) links to each other radiator fan motor (4) by the same electrode holder of lead (2) (1), electrode (10), switch (11), operating circuit plate (3) in power supply indicator (6) and the same respectively casing of ammeter (9) (7) links to each other.

2, a kind of miniature energy-saving electric welding machine according to claim 1, it is characterized in that described operating circuit plate (3) comprises switch (K), fuse (FU), power supply indicator (VD), resistance (R1, R2, R3, R4, RP), rectifier bridge (B), controllable silicon (VS), electric capacity (C), ammeter (A), N channel junction field-effect pipe (T) and transformer (L), the positive pole of controllable silicon (VS) is the upper end of same the 3rd resistance (R3) respectively, the right-hand member of the upper end of the 4th resistance (R4) and rectifier bridge (B) links to each other, the positive pole of the same ammeter of negative pole (A) of controllable silicon (VS) links to each other, the control utmost point of controllable silicon (VS) links to each other with the upper end of second resistance (R2) and the source electrode of N channel junction field-effect pipe (T) respectively, the lower end of the 3rd resistance (R3) links to each other with the drain electrode of N channel junction field-effect pipe (T), the stiff end of the same variable resistor in lower end (RP) of the 4th resistance (R4) links to each other, the convertible tip of variable resistor (RP) links to each other with the grid of N channel junction field-effect pipe (T) and the upper end of electric capacity (C) respectively, the lower end of electric capacity (C) is the lower end of same second resistance (R2) respectively, the left end of the negative pole of ammeter (A) and rectifier bridge (B) links to each other, an input of the same transformer in lower end (L) of rectifier bridge (B) links to each other, an input of the same respectively radiator fan motor of another input of transformer (L) (M), one end of the negative pole of power supply indicator (VD) and switch (K) links to each other, the upper end of the same respectively rectifier bridge of another input of radiator fan motor (M) (B), one end of the upper end of first resistance (R1) and fuse (FU) links to each other, the positive pole of the same power supply indicator in lower end (VD) of first resistance (R1) links to each other, electrode (10) on the same respectively casings of two outputs of transformer (L) (7) links to each other, and the same attaching plug of the other end (12) of the other end of fuse (FU) and switch (K) links to each other.

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