Objects of the value stream toolbox > Customer and supplier

Contents

1. Brief description

The source (push) object is a kind of inexhaustible source of products and materials.

2. Procedure and control description

Source (push) does not require or waits for external orders (either from PPS or other process objects). It acts as a source object where parts are produced and transferred to downstream connected object.

Source (push) can be connected only to inventory objects (inventory (push / pull) , supermarket).

Source (push) monitors the current quantity of defined products (in source push) in the connected inventory objects.

When the current quantity falls below the given threshold limit then new parts are created at the source and pushed downstream.

Example model without Source (Push):

With a scrap rate of 50% at process 1, out of 1000 arriving parts, only 500 parts are sent out. These 500 parts are transferred to the next inventory object for storage.

As both processes have the same processing time, any part that enters the inventory is immediately taken by process 2 for processing.

As a result, the inventory in between has a maximum quantity of 1 part and a minimum quantity of 0 parts during simulation.

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Figure 1 - Example model without Source (Push)

Example model with Source (Push):

The same example with source push results in an exact throughput of 1000 parts at process 2. Source push constantly monitors the stock quantity at the connected inventory object.

As a result, around 50 parts are always maintained as minimum stock at the inventory, as shown in the graph.

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Figure 2 - Example model with Source (Push)

3. Parametrization

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Figure 3 - Source (Push)

Process Parameter	Required	Description
Name	no	Name of the object
Products	no	Products of the object
Comment	no	Custom notes and annotations

Product Parameter

Required

Description

Product

Product at the successor object which must be monitored and produced when required

Minimum Stock quantity

Minimum quantity of parts that must always be available at the connected inventory object.

This can also be considered as the threshold value for product quantities.

When the current stock at the successor object (an inventory) falls below the given threshold value, enough parts must be produced to meet the minimum stock requirement at the inventory object.

4. Connection types

See chapter Possible connections to objects.