SU1622099A1 - Electrode holder for hand arc welding - Google Patents

Abstract

The invention relates to welding, in particular to electrode holders for manual arc welding. The goal is to simplify the design. The electrode holder contains a handle 1, a current-carrying rod 2 located there, and a locking sleeve 8 secured. A new electrode holder is a current-carrying rod on the mounting side of the electrode in the form of a hemisphere 3. on which a self-aligning flat contact 4 fitted with in the place of its contact with the current-supplying rod of the spherical depression. The locking sleeve 8, made in the insulating material, has a number of holes 9 and 10 for the installation of the electrode located in rtsovoy portions Gpovorotnoy hub 8. The holes 9 and 10 mate with kanaakamm 11. The holes and grooves are formed obliquely to the longitudinal axis of the electrode. Due to this, it is possible to use a current lead rod to clamp the electrode. 6 Il. Yo

Description

The invention relates to welding, in particular to electrode holders for manual arc welding.

The purpose of the invention is to simplify the design by using a single mechanism for current supply and fixing the electrode at different angles of inclination not only in a plane perpendicular to the longitudinal axis of the electrode holder.

Figure 1 shows a schematic of an electric holder, a general view in section, in Figure 2 is the same, top view; in Figure 3, section A-A in figure 1; 4-6 are electrode holders with electrodes in different positions.

The electrode holder comprises a handle I, a current-carrying rod 2 with hemisphere 3 fixed in it, a self-adjusting flat contact 4 with a spherical depression 5 for the hemisphere of the current-conducting rod 2 and the clamping surface 6 for the electrode 7 locking rotary

sleeve 8 of electrically insulating material in the form of a cylindrical cap. The sleeve 8 is made with a series of holes 9 (FIGS. 1 and 2) for mounting the electrode at an angle of 90 (FIG. 1) relative to the longitudinal axis of the electrode holder, made in the plane of the end part of the fixing rotary sleeve 8 at specified angles, and holes 10 Figures 1-3), placed around the perimeter of the outer end of the locking rotary sleeve 8 (FIG. 1) for placing the electrode at an angle α of 90 ° (Figures 1 and 3) relative to the longitudinal axis of the electrode holder. The lower edges of the holes 10 (Figures 1-3) are made at the angle of the electrode and go into the grooves 11 (Figures 1 and 3) made on the internal end surface of the fixing rotary sleeve 8 (Figure 1). The holes 9 and 10 and the grooves associated with the holes are inclined to the longitudinal axis of the electrode holder.

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The diameter of the grooves (Fig.1 and 3) is less than half the diameter of the electrode. The rear vertical edges of the holes 10 (Fig.1-3) are located around the circumference, the radius (Fig.1) of which is less than the radius of the flat contact4.

The electrode holder works as follows.v

In the initial state, the flat contact

4 is in an arbitrary position with respect to the holes 9 and the holes 10 for mounting the electrode. Spherical surfaces of the hemisphere 3 and spherical depressions

5 and the internal cavity of the locking sleeve 6 determine the position of the contact 4 with respect to the current-carrying rod 2.

When installing the electrode into the electrode holder, it is inserted into one of the holes 9 or 10. When installed into the hole 9, the electrode takes a position relative to the longitudinal axis of the electrode holder. determined by the angle of inclination of this hole. By turning the locking rotary sleeve 8, the electrode is fixed in the working position due to the force transmitted by the current-carrying rod 2 through the flat contact 4, which occupies the predetermined angle of inclination.

The release of the cinder electrode is made by turning the locking rotary sleeve 8 in the opposite direction. Relaxing the clamping force.

When the electrode is installed at an O2 angle of 90 ° relative to the longitudinal axis of the electrode holder, it is introduced into one of the holes 10 from top to bottom. Since the radius of the flat contact 4 is larger than the radius of the circle, along which the rear vertical edges of the holes 10 are located, the end of the electrode deflects the contact 4, setting it at the required angle of inclination relative to the longitudinal axis of the electrode holder. After that, the electrode is sent along the groove 11 deep into the locking rotary sleeve 8 and the latter is fixed by rotation in the working position.

The discharge of the candle end is produced in a similar way.

To increase the electrical safety of welding operations, the fixing

The hub 8 is made of an electrically insulating material. To reduce the mass of the structure, the current-carrying rod 2 is made of an aluminum alloy. To increase mechanical strength

contacting surfaces floating flat contact 4 is made of bronze.

Compared with the known, the proposed solution allows you to forgive the design of the electrode holder and increase

the level of electrical safety of welding.

Reducing the consumption of structural materials, especially metal (bronze), allows a significant reduction in instrument weight and a reduction in its cost.

Claims (1)

Electrodeholder for manual arc welding, comprising mounted in the handle of the current lead rod and the locking rotary sleeve, characterized in that, in order to simplify the design by using a single mechanism for the current lead and fixing electrode at different angles of inclination not only in the plane perpendicular to the longitudinal axis of the electrode holder, the power supply rod is made in the form of a hemisphere, the electrode holder is equipped flat self-aligning contact with the clamping surface for the electrode and the spherical depression for the hemisphere of the power supply rod, the rotatable sleeve is designed as a cap the inner cylindrical surface and the holes for the electrodes; on the inner surface of the sleeve are made longitudinal grooves mated with the holes, while the holes and the grooves are inclined to the longitudinal axis of the electrode holder. from ABOUT) about midrange one I j & wwweffi99f Fma F5 Editor I. Derbak Compiled by E. Hohrina Tehred M. Morgental FIG. 6 Proofreader A. Osaulenko