L - Lift & Rotate Unit

L - Lift & Rotate Unit (15)

Symptom:

Indexing plate does not get lifted.

Root Cause:
The lifting cylinder does not operate
Remedial Action:
Check valves and controls
Root Cause:
The pressure supply failed
Remedial Action:
Provide sufficient air pressure
Root Cause:
The clamping unit does not release
Remedial Action:
Check the function of the clamping unit
Root Cause:
The unit jams
Remedial Action:
Check the unit manually for free movements

Symptom:

The upper and lower end position does not get detected.

Root Cause:
Sensors defective
Remedial Action:
Replace sensors
Root Cause:
Switching distance or sensor position is not correct
Remedial...


To change the drive motor, please proceed as follows:
  1. Disconnect the electrical and pneumatic supply of the entire conveyor system and secure against reconnection.
  2. Remove the protective chain cover to get free access to the friction clutch and the attachment bolts of the drive motor.
  3. Release the chain, by moving the entire drive unit against the running direction of the conveyor (see chaper "tension the chain"), and lift the drive sprocket with the friction clutch with sufficient tools.
  4. Remove the four drive motor mounting bolts from the attachment bracket and remove the drive motor completely.
  5. Remove the drive motor downwards.
  6. Install the new drive motor in reverse order.
  7. Connect the electrical...

  8. Lift Rotate Changing drive motor 1

    Lift Rotate Changing drive motor 2


To replace the linear guide bushings, please proceed as follows:
  1. Disconnect the electrical and pneumatic supply of the entire conveyor system and secure against reconnection.
  2. Remove the lower protective housing to get clear access to the guide bushings.
  3. Release the tab washers of the shaft connector attachment bolts (with suitable tools).
  4. Remove the attachment bolts and the cross connector.
  5. Each guide bushing is mounted with four attachment bolts. Unscrew the bolts to remove the entire linear guide.
  6. Please follow the steps in reverse order to reinstall the new linear guide bushings.
    Make sure that the linear shaft is cleaned
  7. Manually lift the unit to check if the unit lifts and lowers properly...

Lift Locate Replacement of linear guide bushings 1

Lift Locate Replacement of linear guide bushings 2

Lift Locate Replacement of linear guide bushings 3

Lift Locate Replacement of linear guide bushings 4

Lift Locate Replacement of linear guide bushings 5

Lift Locate Replacement of linear guide bushings 6

Lift Locate Replacement of linear guide bushings 7

Lift Locate Replacement of linear guide bushings 8


To replace the index pins, please proceed as follows:
  1. Disconnect the electrical and pneumatic supply of the entire conveyor system and secure against reconnection.
  2. Remove the entire indexing plate (see previous chapter).
  3. Loosen the attachment bolts of the index pins.

    Lift Rotate Replacement index pin 1

    Lift Rotate Replacement index pin 1

  4. Press the index pins out of the indexing plate from below with a suitable tool.
    Please pay attention that the index pin gets pressed out evenly and that the bolt doesn’t bend.

    Lift Rotate Replacement index pin 3

    Lift Rotate Replacement index pin 4

  5. Remove the attachment bolts completely and remove the index pins.
  6. Please follow the steps in reverse order to reinstall the new index pins. 
    Make sure that the pallet rests properly on the pins and adjust the flat rest if needed.

    Lift Rotate Replacement index pin 5

    Lift Rotate Replacement index pin 6


To remove the indexing plate, please proceed as follows:
  1. Disconnect the electrical and pneumatic supply of the entire conveyor system and secure against reconnection.
  2. Remove the attachment bolts of the indexing plate.
  3. Remove the entire plate.
  4. Install the new plate in reverse order. Make sure that the plate sits correctly with the counter bores on the spacers.
 
 

Lift Rotate Replacement indexing plate 1

Lift Rotate Replacement indexing plate 2

 

With an interval of one (1) month the following preservative maintenance should be carried out:
  1. Check all parts for wear and damages
  2. Clean the guide shafts (from soiling)
  3. Visual check of the unit for damages and detection of leaks. Replace covers if missing or damaged
  4. Make sure that all safety covers are installed
  5. Check if the unit is working properly

The pneumatic installation of the Lift & Rotate Unit has to be done according to the pneumatic diagram to ensure the correct operation of the unit. The supplied air fittings are designed for 6 mm air tubing. The supplied compressed air must be dried and filtered and the pressure must be set in the defined range.
 
The shot pin is activated by an integrated pneumatic cylinder. The pin of the unit has a spring return for safety reasons. This spring automatically pushes the pin out in case of a pressure loss. In this case, the rotation is stopped at the next rotation stop position and any further rotation is not possible.
 
The automatic Lift & Rotate Unit gets rotated by a three-phase...

To guarantee a smooth operation, the Lift & Rotate Unit is in its home position when staring the flow process.
  1. If the stop unit is not occupied (no pallet over the stop unit) (S1), a pallet can run in.
  2. If the pallet is identified in the stop position (S1) by the sensor, the pallet can be lifted. With the use of a cushioned stop unit the signals S1 and S4 must be present before the lifting process starts.
  3. Once the unit reaches its end position (S6), the shot pin can be released and the pallet can be rotated.
  4. To guarantee a locking by the shot pin, the index pin has to be extended to stop the rotat¬ing in the respective position. The position is reached, if the sensor S7 - S10 and the sensor...

Sensors have to be installed in the provided brackets. The wires have to be protected against chafing and secured against unintentional removal. Please pay attention to the correct switching distance and the right sensor size.
 
The controls of the sensors and the used logic can influence the function of the Lift & Rotate Unit tremendously. This is the responsibility of the operating company.
 
The automatic Lift & Rotate Unit is rotated by a three-phase voltage, geared motor, which has to be controlled by a frequency converter. All sensors for the installed stop unit on the respective configuration must be electrically connected according to the related documentation.
 
In projects...
    Lift Rotate Electrical Installation

To tension the chain, please proceed as follows:
  1. Disconnect the electrical and pneumatic supply of the entire conveyor system and secure against reconnection.
  2. Loosen the four mounting clamps of the motor base plate.
  3. Move the entire unit against the running direction until the required chain tension is reached.
  4. Tighten the four mounting clamps.
  5. Connect the electrical supply.
  6. Check the function of the entire Lift & Rotate Unit.
  7. Please follow the steps in reverse order to re-install the indexing plate.

    Lift Rotate Tension chain 1

    Lift Rotate Tension chain 2

 
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