Materials

The teeth are stainless steel and steel as stainless is used for the higher end clips (NZ made).

Some of the similar clips seen in the market use’s copper metal for the teeth that carry out higher voltage.

The clip would need to be durable enough to last 5 years.

304 stainless steel for the teeth of my clip no matter what because it would not rust

Easier production of the product that would make the price lower.

Must with stand at least 5 years of use.

look and feel tough and will be able to handle the outdoor environment

Small size –dimensions of the current product

Metals

During the investigate period I found out that the common metals that are used are stainless steel, aluminium and copper.

Active components use stainless steel for both their springs and teeth, as it is benifical against corrosion. Aluminium is corrosion resistance as it is lighter, but as strong and is generally more expensive. Copper is used in more high end, higher voltage clips.

Plastics

ABS is the current plastic insulator that Active Components use in their clips. It has advantages of being strong, stiff and durable. Has UV resistant properties to prolong colour deterioration. Signs of deterioration of the clip are an approximately after 3years that was mentioned at the Tru-test field trip.

PVC is less durable but is more flexible and cheaper. PVC doesn’t have good UV protection and as a result over time it will turn brittle and becomes easier to break.

Both of the difference plastics are cheap and have good resistance towards water degradation, which are huge important factor in farming conditions.

Co-moulding

 coinjection

During the ideate phase of the some of ideas contained of a rubber based piece, there fore I decided to further investigate the co-moulding aspect and see the limitation of co-moulding.

It seems as though this may not be difficult and there are a lot of limitations into the types of plastics and metals that can be used and in consideration of cheap manufacturing. In further investigation co-moulding is the process of injection moulding a part having more than one type of colour or material within the one injection-molding tool. The different materials are injected in sequence, each one attaching to, or over moulding the previous shots. Advantages of the co-moulding process include faster cycle time due to not having to transfer the part to another tool, and the reduction of handling errors in between shots. Disadvantages are the higher cost of the tooling.

Injection molding

220px-Injection_moulding

Injection molding is the current manufacturing method used for the existing clips in the market, which is cheap and easy to run. As Injection molding is the most commonly used manufacturing process for the fabrication of plastic parts. A wide variety of products are manufactured using injection molding, which vary greatly in their size, complexity, and application. The injection molding process requires the use of an injection molding machine, raw plastic material, and a mold. The plastic is melted in the injection molding machine and then injected into the mold, where it cools and solidifies into the final part.

Assembly

Must be fast to assemble than current product- testing of the fastest someone could assemble the clip was 40 seconds.

Terminals was place further in the clip, making it harder to see the connection.

Spring makes the assembly very difficult caused by the tention.

Pricing/materials

Current materials used are common pieces that are reliable-ABS plastic and stainless steel.

NZ$0.55each -production cost can increase, as the labour time decreases.

There are possibilities into other plastics but ABS is the most likely suitable and durable.

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