Plastic Product Design Procedure
Plastic Product Design
Plastic products design procedure:
In order to ensure that the design of products are reasonable and economy, in the early stages of product design, appearance, appreance designer, draftsman, tooling maker, manufacturer as well as material suppler should be close co-operation, because there is not a designer has such a wide range of knowledge and experience, viewing from different professtional proposal is the basic premise of the rationalization of the product desin; The following will design an explanation of the normal procedure:
A, To decide the functional requirements and product appearance.
In the initial stages of product design, designers must be listed on destination uses conditions and functional requirements of product; In order to avoid the development of products at a later stage causing possible time and cost by drop, desinger should consider a few various design factor as following:
Generall factor
1, function of product
2, assembly of product
3, if it is possilbe to make the assembly simple based on the plasitc application
4, If it is reasonable and effective on manufacturing and assembly
5, product toolerance
6, space limit
7, product life
8, product weight
9, any specification and certification needed such as FDA, FCC
10, if there is same or similar product application on the market
Structure factor
1, the status of working with the load?
2, use the load size?
3, use the load time?
4, the amount of deformation allowed?
Environment factor
1, use in what temperature environment?
2, chemicals or use of, or exposure?
3, work temperature?
4, product life worked in this environment?
Appreance
1, shape
2, color
3, surface finishing such as texture,painting and chroming etc
Product cost
1, estimated product cost?
2, product cost based on current design?
3, if it is possible to reduce the cost?
B, Draft
The draftsman can design the preciouse drawing according the material database once the function of the product and appreance were approvaled as a pre-assessment, review and prototype making reference.
C, Prototype making
CNC machining soluction for protype, SLA, casting protype by rubber mould
These three soluction for prototype is very fast and can review the appreance, but it is very diffcult to do the structure and function test as well as mass production.
Rapid mould
Use the current old mold base and steel to to the rapid mould.
This soluction should take long time and more mould cost , but it can make a few more product , and the product is much more similar as production quality, can do the generall engineering test, also get the really experience to make the actual mould and molding.
D, Product Test
Any product should be done a few test during the prototype process to check the difference between the calculation, imaginary and truth. Most of the fuction test can be done on the prototype, then we can get the completed production design evaluation according to the production function specification.
Simulated uses test must be started during the prototype test normally, this type of test value depends of the extent of the simulated test.
Mechanical and chemical properties are regarded as the important project on the prototype evaluation.
E, Recheck design and correction
Recheck and discusstion help to answer the question thoroughly such as:
Wether the designed product achieve the desired results? Reasonable price? Even at this time, lots of prodcut need to be improved for reducting production cost or important fuction added and appreance changing. Of course, the design changing will cause the completed product evaluation again. If the product can be rechecked and discusstion in details, the product specification can be carried out at this stage.
F, Make the key specification of product.
The purpose is to avoid the deviation in production. so that the products comply with appreance, function and economic requirement. It should include manufacturing processing, dimention tolerance, surface processing, parting line position, edge, deformation, color and test specifications.
G, Mould making
Mould design and making can be started when the specification was carried out prudently, The mould design should be carefull and consulted exporter as the inappropriate mould design and mould making will cause high manufacturing cost, inefficiencies and quality issue.
H, Quality control
It is a good soluction to make specificaiton according to current specification and industrial specification.Also the quality check list should be made in details. QC and designer should join in the design of product specification in order to ensure the produced product meet the product design quality requirement.