Table Of Contents - Techspan New Zealand
25 Inst Issue 312.01.2009Operating & Maintenance Instructions25 Injection Moulding MachineTable of Contents1. Health and Safety Information . 22. Upon Receipt . 23a. Temperature Controller Settings (Brainchild Controller) . 43b. Temperature Controller Settings (Panasonic Controller) . 44. Mould Clamp. 55. To prepare for use . 96. Shutdown and Changing Colours . 137. Design requirements and tips for the design of an injection Moulding die . 138. Mould Specifications . 149. Standard Material Choices . 1510. Electrical Supply and Connection . 1611. Connection Diagram . 171
25 Inst Issue 312.01.20091. Health and Safety InformationHot SurfacesSurfaces of the 25 Injection Moulding Machine may become hot in use. Please take carewhen using the machine, in particular around the nozzle at the end of the heater barrel.The 25 Injection Moulding Machine is intended for the injection moulding of thermoplasticmaterials which can be moulded at temperatures under 200 C. Do not use materials with amoulding temperature over 200 C. Do not attempt to mould materials with a flash pointunder 200 C. Always check the MSDS of any material prior to using it in the 25 InjectionMoulding Machine.If you are in any doubt as to the source and characteristics of a material that you wish to usein the 25 Injection Moulder, seek advice before loading it into the machine.2. Upon ReceiptUnpack carefully and fit the rack guard immediately, if notalready fitted, using the 2 x M4 screws provided.! WARNING !There is a trapping hazard between the teeth of therack and the top rack bush until the rack guard is fitted!The capstan handle assembly is fitted to the machine as follows:1.2.3.Remove the M6 socket head screw from the pinion shaft on the upper right handside of the machineRemove the securing tape from the key in the pinion shaftFit the capstan handle assembly, ensuring that the key is still in position.2
25 Inst Issue 34.12.01.2009Secure the capstan assembly using the M6 socket head screw.It is recommended that the machine be firmly secured to a work top using M10 or similar.The ideal work top height is approximately 850mm as it will be necessary for the operator tosee into the loading hopper.Your machine may have some evidence of residual material in the region of the injectionnozzle. This will be from testing prior to dispatch and will “purge” during the first fewoperations.3
25 Inst Issue 312.01.20093a. Temperature Controller Settings (Brainchild Controller)Switch on the machine and the temperature controller willilluminate. The upper display coloured red shows theactual temperature of the injection barrel and the lowergreen display is the set temperature, which needs to be setby the operator. Press and hold the up or down button asappropriate to adjust the set temperature.Press the up or down button once makes one digitilluminate more brightly. Press again to “scroll” the brightdigit. Press and hold to increase/decrease the value.3b. Temperature Controller Settings (Panasonic Controller)Switch on the machine and the temperature controller willilluminate. The upper display shows the actualtemperature of the injection barrel and the lower displayis the set temperature, which needs to be set by theoperator.To adjust the set temperature, press the “Mode” buttonon the controller. Adjust the temperature as requiredusing the c and b buttons. Press “Mode” to save thenew set temperatures.4
25 Inst Issue 312.01.20094. Mould Clamp(a) Opening and closingOpen the mould clamp by pulling the leverupwards. After moulding, some pressure may berequested to do this.Close the mould by pushing the lever downwardsuntil it clicks over centre.(b) Adjusting for different mould sizes.The mould clamp can be adjusted for different sizes of mould using the hand wheels on theright of the machine. Adjust for a firm over centre resistance and lock the setting using thelocking hand wheel. Once close to the correct setting a very small amount of adjustment willhave a considerable effect to the clamping force required. Too little clamping force and theincoming material will force the mould apart. Too much clamping force will make openingthe mould difficult.5
25 Inst Issue 312.01.2009(c) Adjusting the nozzle positionWhen changing moulds, it may be necessary to adjust the nozzle position, so that it alignswith the entry hole in the injection moulding tool. Adjust as follows.1. Slacken the 4 M8 bolts using a 13mm spanner.2. Slide the entire heating assembly so that the nozzle aligns with the tool.6
25 Inst Issue 312.01.20093. Check alignment by pushing nozzle onto mould using the capstan handle.4. Secure the 4 M8 bolts.7
25 Inst Issue 312.01.2009(d) Stripper PlateThe mould clamp is fitted with a stripperplate, to actuate any ejector pins fitted intothe injection moulding tool.When the mould clamp is opened fully, thestripper plate moves forward, pushing ontoany ejector pins that protrude from thecentre of the tool.8
25 Inst Issue 312.01.20095. To prepare for useSwitch on the machine and set the temperature. Fit a mould and adjust the mould clamp asdescribed in section 4. Raise the injection ram fully up and feed granules into the hopper.The granules will spill into the injection barrel. Continue feeding until the granules are 610mm (1/4” - 1/2”) from the top of the barrel.DO NOT FILL ABOVE THIS POINT AS SURPLUS GRANULES WILL BE WASTED AND MAYMELT ONTO THE HEATED PARTS OF THE MACHINE BELOWFeeding granules in to the hopperAllow the granules to heat up fully. For a first run, this may takes 5 - 8 minutes. After this, topup the granules after each moulding, so that the material at the bottom of the ram is alwayshot.Close the mould using the mould clamp.9
25 Inst Issue 312.01.2009Smoothly but firmly rotate the capstan to injectthe molten plastic into the mould. When themould is full, the resistance on the handle willincrease significantly. Should you continue topush at this stage, you will see the mouldbegin to open under the pressure.Hold the pressure for approx 10 seconds. Thisallows the material in the runner to “freeze”,preventing the pressurised plastic forcing backout of the mould.10
25 Inst Issue 312.01.2009Return the capstan to its rest position, with the ram raised.Refill the hopper ready for the next injection. Doing thisat this stage provides a useful dwell, to allow themoulding to cool.Release the mould clamp. If the tool is fitted withan ejector, lift the handle fully to eject the part.11
25 Inst Issue 312.01.2009Inspect the part988If the moulding has a flash on the lower part, either the mouldclamp is too loose, or the pressure applied to the capstan wastoo high.If the moulding is incomplete, either the pressure applied to thecapstan was too low, or the mould was cold. It can take a fewconsecutive runs to warm the mould, especially for parts with thinsections.If the surface of the part is rippled, the mould is too cold. Whenthis occurs, the hot plastic hits the cold mould and freezes. Themolten core of plastic then rolls over the frozen skin. This repeats,giving the rippled effect.812
25 Inst Issue 312.01.20096. Shutdown and Changing ColoursWhen the session is finished do not add further granules, simply switch off and allow themachine to cool. The residual material in the barrel and valve at the injection point will bereheated when next used. If it is required to change colours the new material can purge theold material out without a mould in place. This may seem wasteful but it is standard practiceand the easiest way of changing colours. There is normally no need to dismantle the machinefor cleaning.7. Design requirements and tips for the design of aninjection Moulding die1. Make the outer shape of the mould to the dimensions in Part 8. It can be round orsquare.2. A draft angle of no less than 1 should be applied to any vertical faces of the mould.3. The plastic will contract quite significantly as it cools. Therefore, if you put most of thefemale detail on the right (non-ejector) side of the mould, and most of the male detailon the left (ejector) side of the mould, the part will tend to shrink away from the rightside, and grip the ejector side. This makes ejection of the part much easier.4. The feed hole should be around 5mm in diameter, with a countersink to accept thenozzle.5. Mould sections should be approx 2-8mm in thickness. Large variations in thicknessmay cause different shrinkages and distort the completed part.13
25 Inst Issue 312.01.20098. Mould Specifications14
25 Inst Issue 312.01.20099. Standard Material eSuggested Moulding TempComments180 CLow temperature andmoulding force required.Polyethylene is a soft andfairly pliable material oncemoulded.190 CThis is easy to mould andprovides a firm moulding. Ourstandard material is 20% talcfilled for rigidity.180 CPolystyrene produces a rigidand more brittle mouldingthan the other materials. Beaware that styrene can giveoff fumes at highertemperatures, so a wellventilated area should alwaysbe used.15
25 Inst Issue 312.01.200910. Electrical Supply and Connection! IMPORTANT!The wires in this mains lead are coloured in accordance with the following code:GeneralUSAGreen & YellowEarthGreenBlueNeutralWhiteBrownLive (Hot)BlackGeneralThe green and yellow wire must be connected to the terminal marked with the letter E, or theearth symbol, or coloured green and yellow or green.The blue wire must be connected to the terminal marked with the letter N, or coloured blueor white.The brown wire must be connected to the terminal marked with the letter L, or colouredbrown or red.USA (115V)The green wire must be connected to the green pin (the largest).The white wire must be connected to the silver pin.The black wire must be connected to the brass pin.Warning - read instructions before installation and use.If in doubt about electrical supply or connection refer to yoursupplier or consult a qualified electrician.16
25 Inst Issue 312.01.200911. Connection Diagram17
Surfaces of the 25 Injection Moulding Machine may become hot in use. Please take care when using the machine, in particular around the nozzle at the end of the heater barrel. The 25 Injection Moulding Machine is intended for the injection moulding of thermoplastic materials which can be moulded at temperatures under 200 C.
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Creating a table of contents The Insert Index/Table window (Figure 1) has five tabs. All of them can be used when creating a table of contents: Use the Index/Table tab to set the attributes of the table of contents. Use the Entries and Styles tabs to format the entries in the table of contents. Use the Background tab to add color or a graphic to the background of the table of
Creating a table of contents The Insert/Index Table window has five tabs. Four of them are used when creating a table of contents: Use the Index/Table tab to set the table's attributes. Use the Entries and Styles tabs to format the table entries. Use the Background tab to add color or a graphic to the table background. The next four sections of this chapter tell you how to use each . /p div class "b_factrow b_twofr" div class "b_vlist2col" ul li div strong File Size: /strong 554KB /div /li /ul ul li div strong Page Count: /strong 15 /div /li /ul /div /div /div
Word. Modifying the appearance To change how the table of contents looks – font type, size, indentation etc. – click in the table and on Table of Contents on the References tab, then choose Custom Table of Contents again. In the Table of Contents dialog box, click the Modify button to
The TABLE OF CONTENTS will have shifted. If you need to re-insert the TABLE OF CONTENTS, this margin fix will not stay in place. You will have to follow the temporary fix again OR make a permanent fix to the TABLE OF CONTENTS. Permanent fix: Place your cursor at the first entry in the TABLE OF CONTENTS.
table of contents reviewed early. It is proposed that, in the digital environment, " the table of contents needs to be generated automatically to reflect the dynamic feature of "digital books" and online collections. the table of contents needs to provide an overview to contents of the documents it covers; the overview
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Coronavirus and understand the prolonged impact these will have on schedules and production. So, where broadcasters are genuinely unable to continue to meet the programming and production requirements set out in their licence as a result of the disruption due to the Coronavirus, we will continue to consider the force majeure condition in the licence to be engaged, and a licensee would not be .
