Machine Start-up

There are two basic modes of machine operation.

1- Setup:  This includes manual operations. In this mode, every press action requires manual pushing of an appropriate button to bring about the desired action.

2-  Semi-Auto or Full-Auto: In automatic operation timers, relays, and limit switches are electrically coordinated to produce the proper sequence of operations, so that each cycle is repeated from shot to shot, and the end result is a finished product with consistent characteristics.

No buttons should be actuated if the machine is in a shut-down condition. In that case, the first move should be to open the water lines to all connections, such as the heat exchanger, the hopper throat, and any other component requiring water coolant. Next one should make sure that all pump suction valves are open.

One shoud check the setup record, which indicated not only the set of parameters for the job but also the accessoroes needed.

Having assembled all the items needed for mold mounting and setup, one can proceed to manipulate the machine.

Before any model is selected, power has to be available in the control

Mold Design Specification

The design of the mold will be divided into 2 stages:

1) Preliminary Drawings

The preliminary design is to be submitted within 1 week after receipt of purchase order. The purpose of this design is to determine the general layout and working of the tool to a degree that will allow steel to be purchased.
This stage should include :

  • Runner system
  • Basic position of water lines
  • Clamp slots
  • Gate locations
  • Gate size
  • Support/Pillar locations
  • Overall size of the mold
  • and any conditions special to the mold.

Project engineer approval is necessary for this stage.

2) Final Design

Drawings are to be fully detailed as follows:

  • Details of final gate designs, runner style, layout and style of sprue puller must be shown.
  • Complete CAD files of the tools to be submitted. ( 2D and 3D)
  • Cores, cavities, inserts or any other part of the mold which are not standard are to be fully detailed.
  • Assembly view should be stated the approximate weight of both mold halves.
  • A material list is required.
  • Detailed drawings are required for all inserts, slides, lifters, etc., with steel hardness specified.

To summarize, in the mold design process some general requirements have to be considered:

– Tool Design
– Materials
– Mold Bases
– Mold Makers Responsibilities
– Mold Venting Requirements
– Mold Cooling Requirements
– Core Pulls/ Lifters
– Electrical Systems
– Hydraulic Systems
– Finish Requirements
– Mold Identifications
– Mold Try-Out
– Warranty
– Tool Design Checklist
– Tool Sign-off