SU389901A1 - DEVICE FOR AUTOMATIC SOFTWARE CONTROL OF BUTT WELDING MACHINE - Google Patents

Description

one

The invention relates to the field of resistance welding and can be used in butt welding machines.

A device for automatic software control of a butt welding machine is known, comprising a fixed axis, mounted on a fixed clip of a machine, a sleeve loosely mounted on it, connected to a movable clip by means of a gear, and sensors interacting with limit switches.

However, in such devices, a change in the setting of the initial position sensor leads to the failure of other parameters, since the path taken by the movable clamp from the initial position to the moments when the upset is switched on and the welding current is turned off. This makes it difficult to set up the device, resulting in a decrease in the accuracy of the butt-faceter setting.

In the proposed device, the movement of the movable clamp during the welding is measured relative to the initial position of the latter, for which a disk with a pointer is mounted on a fixed axis, and the sleeve is provided with a flange covering the disk with a spacing between the clamps of the shield on which it is placed with respect to the sleeve, the hub, which carries the fist of the programming of the reflow process, the initial position sensor and two rotary rings with sensors for turning on the upsetting and turning off the welding current, the scale settings which are located on the free end of the hub.

In the process of moving the rolling butt machine, the sleeve and the hub rotate together and the sensors are sequentially

turn on their limit switches located in the device case - when clamping backward, the limit switch of the initial position is turned off, when moving forward, i.e. during the welding process - upset switches

and welding current. With this design of the programming device, changing the settings of the initial position sensor does not lead to a failure in the adjustment of the remaining parameters, since the path taken

movable clampable from the initial position to the moments when the draft is switched on and the welding current is turned off.

FIG. 1 is given an external view of the device with a scale; in fig. 2 - cross section

devices according to LA in FIG. one; in fig. 3 is a longitudinal section of the device according to BB in FIG. 2

On the outer base plane / rack gearbox 2 is located, the wheel of which

associated with sleeve 3 bearing the flange with

distance scale between clamps. An axis 4 passes through the sleeve, which rigidly connects the gearbox housing with a disk having an indicator of the distance between the clamps.

The hub 5, which surrounds the sleeve 3, carries rings 6 and 7 with the toothed sectors 6 and 9, respectively, the toothed sectors 6 and 9, the sensor strips 10 to 11, the limit switches 12 and 13 fixed to the base 1, and the indicators 14 and 15 of the position of the rings .

The hub 5 has three gear rollers with handwheels, of which the gears of the rollers 18 and 19 engage with the toothed sectors 8 and 9 of the rings 6 and 7j and the gear wheel W is fixed with the toothed flange of the bushing I. On the front side of the hub there are two clamps and a starting position indicator of the movable clamp. But one of the scales adjusts the precipitation on switch-on sensor 10 (Fig. 3), on the other, the welding current switch-off sensor 11, the position of the sensor 16 is matched with the pointer.

A fist 21 is positioned on the hub 6 (FIG. 2), defining the flashing program.

The device works as follows.

To adjust the initial distance between the clips of the butt machine, turning the handwheel of the toothed roller 20 (Fig. 2) rotates the hub 5, because the gear roller 20 connected to the hub 5 rotates the latter relative to the toothed rim of the flange of the stationary sleeve i. The hub 5 (Fig. 1) is rotated until the pointer on the center disk indicates a division defining the desired initial distance between the clamps. The required values of the movable clamping path from its initial position to the moments of upsetting and switching off the welding current are set by rotating the handwheels of the toothed rollers 18 and 19. At the same time, the rings and 7 are rotated, respectively, to align the indicators 14 and 15 with the scales corresponding to required values of the movable clip path.

When the machine is being clamped back, the sleeve 5 and the hub 5 with the parts located on it will rotate as one until the slider-sensor 16 enters the slot of the limit switch 17 and turns it on — the clamp will stop in the initial position. In this case, the initial position indicator located on the front side of the hub 5 (Fig. 1) is always located on the same line as the distance indicator between the clamps on the movable central disk, since the planter 16 is rigidly fixed on the hub 5, and the limit switch 17 is fixed.

Thus, regardless of the distance between the clamps, the initial position of the hub always remains the same, which allows a fist 21 to be placed on the hub 5, which, acting on the throttle through the transmission, for example lever, can program the movement speed of the clamp when reflowing.

When the mobile clamp travels forward, the distance corresponding to the gear roller 18 (Fig. 1) set by rotation of the handwheel (Fig. 1) before the pointer 14 coincides with the corresponding scale division of the sludge, the sensor 10 switches on the limit switch 12 - a slump occurs.

Upon further movement of the movable clamp after the initial position of the path corresponding to the current set by the rotation of the handwheel on a scale, the limit switch 13 will be turned on by the beam sensor 11, and the welding current will be switched off.

Subject invention

A device for automatic software control of a butt welding machine, comprising a fixed axis, mounted on a fixed clip of the machine, a sleeve loosely mounted on it, connected to a movable clip by means of a gear, and sensors interacting with limit switches, characterized in that, in order to simplify and improve the accuracy of the adjustment program of the maschine program, a disk with a pointer is mounted on a fixed axis, and the sleeve is provided with a flange covering the disk with a gap between the machine clamps s, which is placed with the possibility of installing it in a predetermined position relative to the hub sleeve carrying the fist programming reflow process, the reference position sensor and two rotary rings with sensors incorporating precipitation and off the welding current, which setting scale arranged on the free end of the hub.

5 5

/ 2

-15

Fig 2

- //

--/five

-fS

/ 7