JPS5832859Y2 - Spot welding gun set indexing device - Google Patents

Description

[Detailed description of the invention] Technical field> The disclosed technology belongs to a technology in which a hand-held spot welding gun used on an automobile assembly line etc. can be set in a work cup and automatically indexed. It is.

Explanation of the gist> Therefore, this device is suspended with a certain lifting force.
This invention is related to a Spora I [G contact gun set indexing device for setting and fixing a spot welding gun. In particular, the fixing device for setting a spot welding gun is attached to a fixed base so as to be able to slide freely, and the above-mentioned gun can be moved. The button is configured to be biased by a lifting force when set, and the stopper provided on the fixing device is engageable with a plurality of index plates provided on the fixed base. By independently releasing the engagement, the lifting force lifts the welding force in stages, making it possible to index the spot (I position).Furthermore, after all welding indexing is completed, the stopper is released by the lifting blade of the gun set. This invention relates to a spot welding gun set indexing device from which a welding gun can be removed.

<Prior art> In general, hand-held spot welding guns are used on automobile body assembly lines to carry out spot welding work in assembly lines. The worker carried out the welding work while holding the spot welding gun.

<Problems with the prior art> Therefore, welding work is performed manually, which not only results in poor workability, but also makes it difficult to perform accurate indexing when there are multiple welding points at a station. It had the disadvantage of requiring skill.

As a means to deal with this, a method has been devised in which the above-mentioned spot welding gun is set in a work station and a set indexing device is provided to index the welding location, but the indexing mechanism becomes complicated and is not practical. There has been a desire for a long time to devise a set indexing device with a simple structure.

<Purpose of the invention> The purpose of this invention is to solve the technical problem of welding work using a spot welding gun based on the above-mentioned conventional technology, and to solve the problem of welding work using a spot welding gun based on the above-mentioned conventional technology. It is an object of the present invention to provide a submerged spot welding gun set indexing device which is functional and simple in structure and is useful for welding applications in the manufacturing industry.

<Structure of the invention> In line with the above-mentioned purpose, the structure of this invention, whose gist is the scope of claims for registration of a male utility model, is to solve the above-mentioned problems by connecting a spot welding gun suspended from a hanging mount to a work station. When set in the fixing device, the fixing device is biased in the lifting direction by the lifting force of the hanging device, and the stopper provided on the fixing device engages with the index plate at the lowest stage. When the laminar liquid location is set and the index plates of the double membrane are sequentially released, the spot welding gun slides on the fixed base together with the fixing device by the lifting force, and the stopper is placed on the index plate. The welding points are sequentially set by the engaging devices to enable automatic indexing of the spot welding device, and furthermore, after all welding indexing is completed, the stopper of the gun set is lifted by the lifting force and the welding gun is detached. This was achieved by taking technical measures.

<Implementation 11-Structure> Next, one implementation ψ11 of this invention will be described as follows based on the drawings.

In FIG. 3, reference numeral 1 denotes a well-known hand-held spot welding gun, which is connected to a driver (not shown) via a cable 2, and the spot welding gun 1 is suspended via a hanging wire 3. Balancer 4 as a suspension device with power
The balancer 4 is connected via a chain 78 to a traveling machine 10 that runs on a ceiling rail 9.

In addition, 11 is a gun set rod, which is the spot welding gun 1 mentioned above.
It is fixed on the top of the
As shown in the figure, an engaging groove 11' is provided.

Reference numeral 12 is a set indexing device that embodies the gist of this invention and is arranged at each work station 13. A work table 14 is provided at the bottom of the set indexing device 12 to index the workpiece. 15 is set.

Thus, the set indexing device 12 is connected to the station 1.
3, a pair of slide rods 11 and 17 are planted on the fixed base 16 as shown in detail in FIGS. 1 and 2, and
Both sides of a slide base 18 are fitted into the slide rods 17, 17, and are attached to the slide rods 17, 17 so as to be able to slide freely, and a fixing device for the gun set rod 11 is set in the middle of the upper edge thereof. pipe 1
9 is fixedly installed.

A cross-sectional guide plate 20 is attached to the front insertion portion of the set pipe 19, and an extrusion rod 21 is installed inside the set pipe 19.
”・The diameter portion 22, the inner surface of the set pipe 19, and the extrusion rod 21
An extrusion spring 23 is disposed between the stepped portion and the rear inward flange of the set pipe 19 and biased forward, and is formed as a forward bias stopper by a nut 24 screwed onto the rear end.

Further, although not shown in detail, on the right neck of the set pipe 19 in FIG. It is being done.

Therefore, the above-mentioned type stopper 25 is attached to the slide base 1.
The long arm part 26 is rotatably supported by a pin 27 on the front surface of the upper set vibe 19 by a spring 28 which has one end hooked onto the slide base 18.
is biased in the direction of insertion into the notch as shown in detail in FIG.

29 is a support shaft, which is installed on the base 16;
A support collar 30 is fitted to the lowest part of the support collar 30, and a collar 32 integrated with an L-shaped lower index plate 31 is fitted thereon as shown in FIGS. 7 and 8. The upper index plate 3 has the same shape as the collar 34 of the middle index plate 33 which has the same shape.
5 collars 36 are fitted one after another, and the uppermost fixed collar 3
7 prevents each collar from coming off.

Reference numeral 38 denotes a spring support pin, which is set on the base 16 at a predetermined distance from the support shaft 29, as shown in FIG. A spring 39 is interposed between the index plates 31, and springs 40 and 41 are interposed between the support pin 38 and the middle index plate 33 and the upper index plate 35, respectively. As shown, each index plate 3L33, 35 is biased in the direction of spring contraction, and is also urged by a stopper pin 42 attached to the L-shaped inner surface of each index plate 31, 33, 35, and attached to Yc on the base 16. The rotation is biased and stopped in an upright position.

A stopper 43 is integrally provided on the front surface of the slide base 18 so as to protrude from the front surface of the slide base 18.
35 in sequence.

Further, a cylinder 44 is integrally fixed to the side of the slide base 18, and a release fitting 46 provided at the tip of a plunger 45 is provided oppositely so as to be engageable with each index plate 3133.35. In other words, when the slide base 18 is at the lowest position in FIG. 1, the release fitting 46 can be secured to the lower index plate 31 as shown in FIG. 7,
Further, as the slide base 18 rises, it can be engaged with the middle index plate 33 and the upper index plate 35 in sequence.

Note that 46' is a balance weight.

Further, a link support pin 47 is installed on the base 16, and a link plate 48 is rotatably attached to the upper end of the link support pin 47, and the base end 49 of the link plate 48 is bent upward to form the upper index plate. 35, and the tip 50 can be engaged with the fifth and sixth
As shown in detail in the figure, they are bent into a U-shape on the same plane.

The lower end of the short arm of the L-shaped stopper 25 provided on the slide base 18 is used as a retaining part 51 and is buttoned, and when the slide base 18 is placed at the top by the process described later, it will be closed as shown in FIG. As shown in FIG. 2, the retaining portion 51 is set in a positional relationship such that it can engage with the tip 50 of the link plate 48.

In addition, 51' is a stopper provided protrudingly from the lower part of the retaining part 51.

In addition, in FIGS. 5 and 6, for convenience of explanation of how the tip 50 of the link plate 48 engages with the engaging portion 51 of the above-mentioned upward-type stopper 25, the upward-type stopper 25 is shown in a side view. It is shown in side view.

<Implementation 11-Purchase> Concerning the above-mentioned situation, when the slide base 18 is on standby, the slide base 18 is in the state of being filled with one bottle at the bottom as shown in FIGS. 1 and 2 due to its own weight.

When performing welding work, the spot welding gun 1 is lowered against the lifting force of the balancer 4, the gun set rod 11 is inserted into the set pipe 19 of the set indexing device 12, and the gun set rod 11 is inserted into the set pipe 19 of the set indexing device 12. When the push rod 21 is moved backward against the spring 23 and fitted, the long arm portion 26 of the L-shaped stopper 25 is locked at the position where it engages with the engagement groove 11' by the tensile force of the spring 28. Ru.

When the gun set rod 11 is set, the lifting force of the balancer 4 acts and the slide base 18 integrated with the set vibe 19 is lifted upward.
In the initial state, the slide base 18 is
Since the stopper 43 provided on the lower index plate 31 engages with the lower index plate 31 from below, upward movement of the slide base 18 is restricted.

That is, in this state, the spot welding gun 1 is indexed and set at the lowest stage, and the tip electrode of the spot welding gun 1 comes into contact with the lowest welded part a of the workpiece 15 in FIG. Welding is performed.

Next, when the cylinder 44 is actuated to advance the release metal fitting 46, the release metal fitting 46 abuts and engages the lower index plate 31, and as shown in FIG. The engagement with the stopper 43 is released.

As a result, the slide base 18 slides upward on the slide rod 17°17 due to the lifting force of the balancer 4, and as shown by the dotted line in FIG. It stops at the engaged position.

The cylinder 44 is reset after a predetermined period of darkness by a controller (not shown), and the lower index plate 31 is operated by a spring 39.
Due to the action of , it returns to its original position where it abuts against the stopper pin 42.

In the above state, indexing is performed for the second time, and the tip electrode of the spot welding gun 1 is brought into contact with the welding location as shown in FIG. 3, and welding work is performed at that location.

Then, when the cylinder 44 is operated again to push out the release metal fitting 46, the cylinder 44 integrated with the slide base 18 is also moved upward, so the middle stage indexing plate 33 is moved upward by the release metal fitting 46. It is rotated in the same manner as in the case of the protrusion plate 31, and the restriction on the stopper 43 from above is released, and the slide base 18 rises in the same manner as described above, and the stopper 43 comes into contact with the upper index plate 35, and at that position, the slide base 18 is vertically determined and indexed, and in this state, the tip electrode of the spot welding gun 1 comes into contact with the welding point C of the workpiece 15, as shown in FIG. 3, and the welding operation is performed at that portion.

After the welding work at the three welding points a, b, and c is completed, the cylinder 44 is actuated to advance the release fitting 46 further, and the upper index plate 35 of the release fitting 46i1 is rotated. , the restriction on the stopper 43 is released, the slide base 18 is raised by the lifting force of the balancer 4, and the lower end protruding stop collar 51' of the L-shaped stopper 25 provided on the slide base 18 is linked as shown in FIG. Board 48
is adapted to stop at a device that engages the tip 50 of the.

Further, the advancing movement of the release fitting 46 of the cylinder 44 engages the base end 49 of the link plate 4B via the upper index plate 35 and simultaneously turns the link plate 48, so that the stop flange 51' Almost at the same time as it engages with the link plate tip 50, the bent tip 50 of the link plate 48 presses the engaging portion 51 of the L-shaped stopper 25, as shown in FIG.
Swirl.

As a result, the long arm portion 26 of the above-mentioned type stopper 25 separates from the engagement groove 11' of the set vibrator 19, and the gun set rod 1
1 is released, the extrusion spring 23 advances the extrusion rod 21, and thereby the spot welding gun 1 is removed from the set indexing device 12, and the slide base 18 is no longer affected by the lifting force by the balancer 4. It falls under its own weight and is used for the next work.

Other implementations ψ11〉 Note that the embodiment of this invention is of course not limited to the above-mentioned implementation PIJK, and various embodiments can be adopted.
It is not necessary to use the automatic release type as shown in [1], but it is also possible to manually release each index plate without using a cylinder, or to slide the slide base horizontally. It is possible.

<Effects of the invention> According to this invention, the fixing device for setting and fixing the spot welding gun suspended on the hanging device having a lifting force is attached to the fixed base so as to be able to slide freely. The stopper provided on the holder is engageable with an indexing plate provided oppositely in the lifting direction, and the spot welding gun is vertically indexed by the indexing plate. In addition to being able to index and move using the lifting force of the spot welding gun, it is also possible to return to its own weight when the spot welding gun is detached.Therefore, there is no need to provide a complicated moving device in the set indexing device itself, simplifying the device and making it possible to manufacture it at low cost. Excellent effects are produced.

Furthermore, the welding device can be indexed by simply releasing the index plates of the double membrane one by one, so the mechanism for indexing can be simple, and the simple structure also makes maintenance easy. There are also some effects.

Therefore, by using the device of this invention, the labor of the operator using the spot welding gun is reduced, and it is also possible to perform the welding work in a conventional manner.

[Brief explanation of the drawing]

The drawing shows one implementation ψ11 of this invention, and the first
The figure is an IE collapse diagram of the set indexing device, Figure 2 is a side view of Figure 1, Figure 3 is an overall view showing the working state, Figure 4 is a detailed view of the indexing mechanism, Figures 5 and 6 are 7 and 8 are partial top views of FIG. 4, and FIG. 9 is an overall plan view. 4... Hanging device, 1... Spot welding gun, 19.
...Fixed base 51iJJ, 16...Fixed base, 43...
Stroller 3L33, 35... Index plate, 44, 45,
46...Purchase indexing plate rotating machine, 12...Set indexing device.

Claims (1)

[Scope of utility model registration request] A spot welding gun set indexing device is provided with a fixing device for setting a spot welding gun suspended on a hanging device having a lifting force, and the fixing device is attached so as to be slidable with respect to a fixed base. and a stopper provided on the fixing device is engageable with a plurality of index plates provided on the fixed base facing each other in the direction of the lifting force, each of the index plates A spot welding gun set indexing device, characterized in that the spot welding gun set can be independently disengaged.