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Inspection device for TPX and TALO

The inspection device serves for following of the transforming process in the bending and pressing tool with help of sensors. In case of any defect, that can be foreseen, in course of feeding or of the transforming process the sensors register the digression from the standard working and the electronic controls cut off immediately the assembly clutch­brake and stop the machine.

The basic execution of the inspection device allows to watch 3 inspection points in the tooling.

Description of the Inspection - Example of Supervision of Correct Feeding:
The device follows if the wire is correctly fed from the not driven uncoiler. The sensor (sensors) is (are) installed in the tooling to follow if the working is correct and to stop the machine in case of a failure, e.g. if the length of the wire is correct and if it is not, to stop the machine.

Description of the Function of the Electronics:
This part of the device serves to decode the sequence of the signals fromthe sensor(s) of the tooling and from the inspection device. The first sensor activates the electronic supervision and the second sensor stops the activation. If in the course of this section no signal is given by the sensor, the machine is automatically stopped.

    List of Components of the Device:
  • device with cams and sensors - can be installed in any free hole on the central working plate, designated for a working unit
  • tooling with sensor
  • signal of device function
  • terminal board
  • electronic circuit of evaluation
  • confirming pushbutton
  • ATTENTION!!! The sensors are not part of the delivery of the device because the design of the tooling is different as well as the sensors.
  • Location of individual described components on the machine (see Fig. 2).
Adjustment of Inspection Device: Correct setting­up the device and perfect adjustment of the brake­clutch assembly in accordance with the instruction manual is most important for correct working of the device. The sensors are adjusted 1-2 mm above the disk with recess. The induction sensor(s) is (are) adjusted in the tool according to the material worked always with the smallest gap admissible for the used technology - 0,3 ÷ 0,5 mm being the optimum. This gap ensures a reliable functioning and at the same time guarantees a sufficient distance from the material worked. Optical sensors give better results.

The individual sensors are set­up in actual sequence with a dwell necessary for the electronics to treat the signal.

    The duration of the dwell in angle units depending from the machine speed is shown as follows:
  • up to 100 r. p. m. - 5o
  • up to 200 r. p. m. - 10o
  • up to 300 r. p. m. - 15o
Special attention must be given when adjusting the dwell between the sensor in the tool sensor of the device.

Operation of the Machine with the Inspection Device: The device must be adjusted by an experienced technician. An operator is not authorized to any intervention in the setting­up of the sensors. When the device stops the machine the confir-ming pushbutton is lightened on the control panel. Before the machine is started again the operator must remedy the defect and set the machine in original position. Then by depressing the confirming pushbutton he erases the state of defect from the memory of the evaluation electronic circuit - the machine is ready to restart.

Inspection and Maintenance of the Inspection Device: Regular inspection and maintenance of the sen-sors is a must for keeping the device reliably in function. Every day, before starting the machine it is necessary to make one process cycle in turning the hand wheel whilst the main switch is turned on and whilst the correct function of the sensors is checked on the control panel (all the indicator diodes lighted subsequently in the right order).

At least once a month, but every time if a sensor does not work correctly, it is necessary to clean its sensing surface. The frequency of cleaning depends largely from the cleanliness of the material worked if is dirty the cleaning will have to be more frequent.

©   Kovopol a.s., 17.listopadu 226, 549 54 Police nad Metují, tel.: +420 491 549 111