CN102310250A - Stud welding gun - Google Patents

Abstract

The invention discloses a stud welding torch, which comprises a torch casing and an end cover set arranged on the torch casing, the end cover set includes two aluminum sleeves and a positioning ring, the aluminum sleeve at the rear end is engaged with the torch casing, and The aluminum sleeve at the front end is connected with the positioning ring through threads, and the aluminum sleeve at the rear end is provided with two guide rods parallel to the axis of the conductive shaft. A cavity is formed with the aluminum sleeve at the rear end, and the cavity includes a conductive shaft, a connecting body, an insulating sleeve, a male connector and a female connector. The front end of the conductive shaft is provided with a conductive chuck. The body, the insulating sleeve and the front end of the male sleeve are connected in turn. The rear end of the male sleeve is provided with an armature. The female sleeve is fixed on the gun shell and is relatively slidably sleeved on the armature. The female sleeve is provided with a power supply Coil, when the energized coil is energized, the male connector is lifted and slides to the female connector, and when the energized coil is de-energized, the male connector falls away from the female connector.

Description

stud welding torch

technical field

The invention relates to a stud welding torch.

Background technique

Arc stud welding (stud welding) is a method of contacting one end of the stud with the surface of the plate (or pipe), energizing the arc, and after the contact surface is melted, a certain pressure is applied to the stud to complete the welding. Cylindrical head welding studs for arc stud welding are suitable for high-rise steel structure buildings, industrial plant buildings, roads, railways, bridges, towers, automobiles, energy, transportation facilities, airports, stations, power stations, pipe supports, hoisting machinery and Other steel structures, etc.

The basic principle of arc stud welding is to ignite the arc between the stud to be welded and the workpiece. When the stud and the workpiece are heated to a suitable temperature, under the action of external force, the stud is sent into the welding pool on the workpiece to form a welded joint. . According to the different welding power sources used in the welding process, traditional arc stud welding can be divided into two basic methods: drawn arc stud welding and capacitor energy storage arc stud welding.

Different from the welding principle of the energy storage stud welder, the drawn arc stud welder has no capacitor charging process. The entire welding process is completed through the discharge of the welding power supply and the thyristor controls the discharge time. The discharge time is 5-500 milliseconds.

When traditional stud welding torches are used to weld longer studs, the studs tend to be tilted, and the studs are not perpendicular to the workpiece.

Contents of the invention

The object of the present invention is to provide a stud welding torch which can effectively improve the straightness of stud welding.

In order to achieve the above object, the present invention provides a stud welding torch, which includes a torch casing and an end cover set for positioning the stud on the torch casing, the end cover set includes two aluminum sleeves and a positioning ring, The aluminum sleeve at the rear end is clamped with the gun shell, the aluminum sleeve at the front end is connected with the positioning ring through threads, the aluminum sleeve at the rear end is provided with two guide rods parallel to the axis of the conductive shaft, and the aluminum sleeve at the front end is The sleeve can be relatively slidably arranged on the guide rod. The gun shell and the aluminum sleeve at the rear end form a cavity, and a conductive shaft, a connecting body, an insulating sleeve, a male sleeve and a female sleeve are arranged in the cavity. The front end of the conductive shaft is provided with a conductive chuck, the female connector is fixed on the gun shell, and a energized coil is arranged in the female connector, and it is characterized in that: the conductive shaft, the connecting body, the insulating sleeve, and the male connector The rear end of the conductive shaft, the connecting body, the insulating sleeve and the front end of the male connector are connected in sequence. A magnetic armature is arranged on the rear end of the male connector, and the armature is relatively slidably inserted in the In the female connector, when the energized coil is energized, the male connector slides to the female connector along with the armature, and when the energized coil is de-energized, the male connector is away from the female connector.

Preferably, a sleeve is coaxially provided on the conductive shaft, and a positioning rod extending outward is provided on the outer edge of the sleeve, and a hole for engaging with the positioning rod is provided on the gun casing.

Preferably, it also includes a positioning block arranged on the gun casing, and the positioning block abuts against the front end face of the connecting body when the male socket falls away from the female socket.

The present invention adopts the above structure and has the following advantages:

1. Compact structure, easy welding operation;

2. Able to process studs of various lengths;

3. The axis positioning of the conductive shaft is accurate to ensure that the stud is perpendicular to the welding plate.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention.

Accompanying drawing 2 is the schematic diagram of removing end cover group and half shell of the present invention.

In the attached drawings: 1. Gun casing; 2. End cover group; 21. Aluminum sleeve at the rear end; 22. Aluminum sleeve at the front end; 23. Positioning ring; 24. Guide rod; 3. Conductive shaft; 4. Connector ;5, insulating sleeve; 6, male connector; 7, female connector; 8, armature; 9, shaft sleeve; 10, positioning rod; 11, positioning block; 12, spring.

Detailed ways

A preferred embodiment of the present invention will be described in detail below in conjunction with one of the accompanying drawings 1-2, so that the advantages and characteristics of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clear and definite definition.

A kind of stud welding torch, it comprises gun case 1 and the end cover group 2 that is used for positioning stud that is arranged on the gun case 1, and described end cover group 2 comprises two aluminum sleeves and positioning ring, and the aluminum sleeve at the rear end 21 is clamped with the gun casing 1, the aluminum sleeve 22 at the front end is connected with the positioning ring through threads, the aluminum sleeve 21 at the rear end is provided with two guide rods parallel to the axis of the conductive shaft 3, and the aluminum sleeve 22 at the front end is The sleeve 22 can be relatively slidably arranged on the guide rod. The gun casing 1 and the aluminum sleeve 21 at the rear end form a cavity, and the conductive shaft 3, the connecting body 4, the insulating sleeve 5, and the male sleeve 6 are arranged in the cavity. and the female connector 7, the front end of the conductive shaft 3 is provided with a conductive chuck, the female connector 7 is fixed on the gun shell 1, and the energized coil is arranged in the female connector 7, the conductive shaft 3, The connecting body 4, the insulating sleeve 5, the male sleeve 6 and the female sleeve 7 are of split structure, the rear end of the conductive shaft 3, the connecting body 4, the insulating sleeve 5 and the front end of the male sleeve 6 are connected in sequence, and the male sleeve The rear end of 6 is provided with a magnetic armature 8, and the armature 8 is relatively slidably inserted into the female connector 7. When the energized coil is energized, the male connector 6 slides to the female connector 7 along with the armature 8, when When the energized coil is de-energized, the male connector 6 is far away from the female connector 7 .

The coaxial sleeve 9 on the conductive shaft 3 is provided with a shaft sleeve 9, and the outer edge of the shaft sleeve 9 is provided with a positioning rod 10 extending to the outside, and the gun housing 1 is provided with a shaft for interlocking with the positioning rod 10. connecting hole.

It also includes a positioning block 11 arranged on the gun casing 1 , and the positioning block 11 abuts against the front end of the connecting body 4 when the male socket 6 falls away from the female socket 7 .

In this embodiment, a stud welding torch includes a torch casing 1 and an end cover group 2 arranged on the torch casing 1 . The end cover group 2 includes two aluminum sleeves and a positioning ring, the aluminum sleeve 21 at the rear end is engaged with the gun casing 1, the aluminum sleeve 22 at the front end is connected with the positioning ring by threads, and the aluminum sleeve 21 at the rear end Two guide rods parallel to the axis of the conductive shaft 3 are provided, and the aluminum sleeve 22 at the front end is relatively slidably arranged on the guide rods. The aluminum sleeve 22 at the front end can slide on the guide rod according to the studs of different lengths to roughly meet the height of the stud protruding out of the positioning ring, and then further adjust the positioning ring and the screw thread at the front end to fine-tune the positioning of the stud. The height of the ring, so that the length of the stud protruding from the positioning ring meets the processing requirements.

Since the straightness of the guide rod is shaped, the straight line formed by the axis of the aluminum sleeve 22 at the front end and the axis of the aluminum sleeve 21 at the rear end is parallel to the guide rod. Therefore, the straightness of the studs positioned by the end cap group 2 during the machining process can also be guaranteed.

The gun casing 1 , the aluminum sleeve 21 at the rear end and the positioning ring jointly form a cavity, and the cavity includes a conductive shaft 3 , a connecting body 4 , an insulating sleeve 5 , a male socket 6 and a female socket 7 .

The front end of the conductive shaft 3 is connected with a conductive chuck. On the conductive shaft 3, a coaxial sleeve is provided with a shaft sleeve 9, and the outer edge of the shaft sleeve 9 is provided with a positioning rod 10 extending outward, and the gun shell 1 is provided with a hole for snapping with the positioning rod 10 . The armature 8 is arranged at the rear end of the male sleeve 6, the male sleeve 6 drives the conductive shaft 3 to slide, and the sleeve 9 is arranged at the front of the conductive shaft 3, so the sleeve 9 limits the beating of the conductive shaft 3 during welding, The quality of the studs during the welding process is guaranteed.

The rear end of the conductive shaft 3 is connected to the front end of the connecting body 4 . The connecting body 4 is a cuboid, and the axis of the conductive shaft 3 coincides with the center line of the connecting body 4 . The connector 4 is also connected to a flexible cable, and the other end of the flexible cable is electrically connected to the control circuit. Flexible cables are lighter in weight and generate less friction during sliding.

The rear end of the connecting body 4 is fixedly connected with the front end of the insulating sleeve 5 through screw fit, the axis of the insulating sleeve 5 coincides with the axis of the conductive shaft 3, and the insulating sleeve 5 is made of wood material, which plays an insulating effect.

The rear end of the insulating sleeve 5 is connected to the front end of the male sleeve 6, and the rear end of the male sleeve 6 is provided with an armature 8, which is soft iron, which is immediately magnetized in the magnetic field, and after the magnetic field disappears Immediately demagnetized again. Therefore, the process of adsorption and detachment of the male socket 6 and the female socket 7 is fast and stable. The armature 8 is cross-shaped, and the center of the cross-shaped armature 8 is located on the axis of the conductive shaft 3 . Between the armature 8 and the insulating sleeve 5, the male sleeve 6 also includes a conical body with a conical surface.

When the energized coil is energized, the female connector 7 generates magnetism and generates suction to the armature 8, and the armature 8 drives the male connector 6 to slide to the female connector 7, driving an arc between the stud in the conductive chuck and the welding plate, and A molten pool is generated between the welding plate and the stud, and when the energized coil is de-energized, the conductive shaft 3 can quickly press the stud into the molten pool to be welded on the welding plate under the counteraction of the spring 12 .

The welding torch also includes a positioning block 11 arranged on the gun housing 1 , and the positioning block 11 abuts against the front end of the connecting body 4 when the male socket 6 falls away from the female socket 7 . It is also possible to adjust the falling distance of the conductive shaft 3 by adjusting the size of the positioning block 11, and at the same time adjust the welding height between the stud and the welding plate.

The present invention adopts the above structure and has the following advantages:

1. Compact structure, easy welding operation;

2. Able to process studs of various lengths;

3. The axis positioning of the conductive shaft 3 is accurate to ensure that the stud is perpendicular to the welding plate.

Specific embodiments of the present invention have been described above with reference to the drawings. It is obvious that many modifications can be made to the prior art and techniques without departing from the scope and spirit of the present invention. Various changes can be made within the scope of the technical spirit of the present invention as long as the technical field to which the present invention pertains is acquired.

Claims (3)

1. stud welding gun is characterized in that: it comprises the rifle shell and is arranged on the end cap group that is used for positioning stud on the rifle shell that said end cap group comprises two aluminium covers and centring ring; Be positioned at the aluminium cover and the clamping of rifle shell facies of rear end, the aluminium cover that is positioned at front end is connected through screw thread with centring ring, and the aluminium cover that is positioned at the rear end is provided with the guide rod that two axis with conductive shaft parallel; Be positioned at being arranged on the guide rod that the aluminium cover of front end can slide relatively, said rifle shell forms a cavity with the aluminium cover that is positioned at the rear end, is provided with conductive shaft, connector, insulation sleeve, public access cover and mother in this cavity and connects cover; The front end of said conductive shaft is provided with conductive chuck, and said mother connects cover and is fixed on the rifle shell, and said mother connects and is provided with hot-wire coil in the cover; Said conductive shaft, connector, insulation sleeve, public access cover and mother connect cover for dividing body structure; The front end of the rear end of conductive shaft, connector, insulation sleeve and public access cover links to each other successively, this public access overlap rear end be provided with one have magnetic armature, this armature is inserted in mother relatively slidably and connects in the cover; When hot-wire coil is switched on; Said public access cover slides to mother with armature and connects cover, and when hot-wire coil cut off the power supply, said public access cover connect cover away from mother.

2. stud welding gun according to claim 1 is characterized in that: the coaxial axle sleeve that is arranged with on the said conductive shaft, the outer rim of this axle sleeve are provided with the backstay that extends laterally, offer on the said rifle shell to be used for and this backstay hole of clamping mutually.

3. stud welding gun according to claim 1 is characterized in that: it comprises that also one is arranged on the locating piece on the rifle shell, and this locating piece falls away from mother at this public access cover and connects the front end face that props up connector when overlapping.

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