JPH021597B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically loading a stud to be welded onto a stud welding gun.

Stud welding guns used with stud welding machines such as arc stud welding machines and capacitor discharge type stud welding machines are generally fixed types that are fixed to stands in assembly plants, etc., and fixed types that are used by workers at construction sites etc. There are portable stud welding guns that can be held and used, and in portable stud welding guns in particular, the studs to be welded are usually attached by hand by the operator. Therefore, when welding a large number of studs of the same size, it is necessary for the worker to carry a large amount of studs to the site along with a stud welding gun, which is relatively heavy and bulky in situations where work space is limited or the footing is poor. Bringing in a large amount of studs not only places a heavy burden on the worker, but also makes the stud installation process relatively troublesome, reducing welding efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic stud mounting device that can eliminate the above-mentioned drawbacks, reduce the burden on the operator, and at the same time significantly improve welding efficiency.

For this purpose, in the automatic stud setting device according to the invention, a movable stud receptacle is provided for receiving studs from a stud supply, which can for example consist of a stud supply pipe dimensioned according to the diameter of the studs to be welded. A drive mechanism is provided for moving the stud receiving portion from a stud receiving position relative to the stud supply portion to a stud mounting position relative to the stud welding gun in response to the mounting operation. The drive mechanism may preferably consist of a pressure-actuated cylinder with an axial stud feed cylinder and a transverse stud feed cylinder. The drive mechanism consists only of an axial stud feed cylinder, and the piston rod of this cylinder can be rotated to move the stud receiver, which is attached to the tip of the cylinder via a mounting arm, to the stud mounting position opposite to the stud welding gun. It can also be configured as follows. The device according to the invention can also be supported integrally with a stud welding gun, for example by means of a holder which is adapted to be suspended. Further, fluid pressure electromagnetic force or other mechanical force can be used as a power source for the drive mechanism of the stud receiving portion.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 and 2 schematically show an embodiment of the device of the present invention, in which 1 is a stud welding gun, 2 is a stud supply pipe, and 3 is an axial stud feed cylinder, these devices being connected to a holder 4. Therefore, they are supported as one. A lateral stud feed cylinder 5 is attached to the piston rod 3a of the axial stud feed cylinder 3, and a stud receiver 6 is attached to the piston rod 5a of the lateral stud feed cylinder 5. This stud receiving part 6 is connected to the stud welding gun 1 from a position opposite to the tip of the stud supply pipe 2 by the two cylinders 3 and 5.
The chuck 1a is reciprocated to a position opposite to the chuck 1a. The operation of the drive mechanism for the stud receiver 6, which is comprised of the cylinders 3 and 5, is performed in a predetermined order by, for example, the operation of a switch (not shown).

Next, the operation of the apparatus shown in FIGS. 1 and 2 will be explained with reference to FIGS. 3 to 6.

3 to 6, the apparatus shown in FIGS. 1 and 2 is further schematically shown, and corresponding parts are designated by the same reference numerals.

In Fig. 3, the stud receiving part 6 is connected to the stud supply pipe 2.
Indicates the state in which the stud is in the receiving position relative to the
In this state, the piston rods 3a, 5a of both cylinders 3, 5 are in the retracted position. In this position, the stud 7 is inserted into the stud receiver 6. Thereafter, the piston rod 3a of the axial stud feed cylinder 3 is moved to the forward position as shown in FIG. The piston rod 5a of the directional stud feed cylinder 5 is moved into the forward position. Thereafter, the axial stud feed cylinder 3 is operated again toward the retracted position, and the stud receiver 6 is moved to a position opposite to the chuck 1a of the stud welding gun 1, as shown in FIG. It is inserted and pushed to the magnet adsorption position. In this way, the stud 7 is attached to the stud welding gun 1 from the stud supply pipe 2. After installation, the drive mechanism of the stud receiver 6 is operated in the reverse order as described above, returning to the position shown in FIG.
Therefore, the stud welding gun 1 is positioned on the base material, and the trigger 1 provided on its handle 1b (FIG. 2)
By pulling c, the studs 7 can be welded into the base material.

As explained above, according to the present invention, the stud 7 can be automatically attached to the stud welding gun 1, which not only saves the worker the trouble of automatically attaching the stud, but also saves the worker in limited spaces and There is no need to bring studs to welding work sites with poor footing, which greatly improves work efficiency.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the device according to the present invention, FIG. 2 is a bottom view of the device shown in FIG.
FIG. 6 is an operation explanatory diagram showing the operation order. In the figure, 1: stud welding gun, 2: stud supply pipe, 3, 5: drive mechanism, 6: stud receiver,
7: Stud.

Claims (1)

[Claims] 1. An axial stud feed cylinder equipped with a piston rod that is mounted parallel to the axis of the stud welding gun and driven in the axial direction on a holder attached to the main body of the stud welding gun, and an axial stud feed cylinder equipped with a piston rod that is driven in the axial direction. a transverse stud feed cylinder with a piston rod mounted and driven in a direction transverse to the axis of the stud welding gun; and a transverse stud feed cylinder with a piston rod mounted at the tip of the piston rod of the transverse stud feed cylinder to receive the stud parallel to the axis of the stud welding gun. The stud receiving part is configured to reciprocate between the stud supply part and a stud mounting position opposite to the chuck of the stud welding gun by an axial stud feeding cylinder and a lateral stud feeding cylinder. An automatic stud mounting device for a stud welding gun, characterized by: