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Some practical application examples created with SELMOstudio

3D virtual station modelled with SELMO

This simulation involves a system that sorts cans into a box and finally empties it again. The cans are transported on a conveyor belt. A light barrier recognizes the can at the pickup point of a 2-axis portal robot. Then the conveyor belt stops and the gantry arm grips the can and sorts it into a box, which is located on a second conveyor belt. As soon as the light barrier no longer detects a can, the conveyor belt starts up again and brings a new can to the pickup point. The position of the box on the conveyor belt is monitored by two further light barriers to ensure a smooth process. A total of 9 cans are sorted into the box. After the box is fully loaded, the second conveyor belt starts and brings the box towards a robot arm. Another light barrier detects when the box is reached at the end of the conveyor belt. Reaching the end position activates the robot arm, which grabs the box and moves it to the desired position to finally empty the box. Then it moves back to the starting position and places the box back on the conveyor belt. Now the conveyor belt switches on again and the empty box returns to its starting position under the 2-axis portal robot. The light barrier recognizes the box and stops the conveyor belt. The portal arm starts to sort again and the process repeats.

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Model small and large machines reliably and easily with SELMO

 

A bending device with three cylinders is used to bend sheet metal. The sheet is first held over cylinder A, then the first bending process takes place over cylinder B (pre-bending) and finally the final bending over cylinder C. The cylinders are then returned in reverse order. Pressing the emergency stop leads to an immediate Stop of all cylinders. By pressing the reset button in the model, the sheet metal is reset to its original shape.

 

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The drilling device model is a simple device that enables the automatic clamping and drilling of a workpiece. After pressing start, cylinder A first clamps the workpiece. Then motor M1 of the drill is switched on and the machine is then driven into the workpiece via cylinder B. When the drilling process is complete, cylinder B first retracts and then cylinder A after the motor has been switched off.

 

 

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A package is being transported - from the lower roller conveyor (left) to the end of the upper roller conveyor (right). The goods are to be conveyed to the other level by a lifting and ejecting device. These devices each consist of a pneumatic cylinder with a limit switch. A parts control is located directly in the lifting station. The package is released via the visualization.

 

 

 

 

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Packages for labelling are delivered on the lower roller conveyor. The labelling station at the end of the lower roller conveyor runs automatically and is not part of the task. After the label has been stuck on, the package is pushed back onto the lower roller conveyor and remains there. The removal can now be initiated by pressing button S1.

 

 

 

 

 

 

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The mixing tank model consists of a tank with a motor-driven agitator M, in which two liquids are mixed in a predetermined ratio and then heated to a target temperature. The two liquids are supplied via two feed lines, both have a coarse valve (V1.1 or V2.1) and a fine valve (V1.2 or V2.2) for precise metering. The two flow rate sensors QI1 and QI2 generate pulses which frequency is proportional to the respective filling speed; one impulse corresponds to just 1% of the container volume. The outflow of the mixture is controlled via valve V3. Two limit value transmitters (LIS1 / LIS2) and an analog value transmitter (LI1) are available for measuring the level. The liquid in the tank can be heated by a heating element H; A limit value transmitter (TISmax) and an analog value transmitter (TI1) are available for measuring the temperature. The heating can be switched on program-controlled or manually using the S2 button. The alarm lamp H1 indicates that the temperature limit is exceeded. The mixing process is started with the start button S1.

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