Thick slices of vacuum forming process

A, customer inquiry requests: way to call the inquiry, two fax inquiry way, way three Email inquiry, way four inquiry through Internet chat tools. Customers must provide vacuum forming products of length, width and height and thickness of the material used, Or g) , color and model ( PVC、PET、PS、PP) , the product quantity and production cycle. Second, the business department offers: vacuum forming products unit price levels associated with the following factors: the length, width and height of vacuum forming products and the complexity of the vacuum forming; The type of materials used, thickness and color; After vacuum forming products processing technology ( Folding, punching, sealing side, etc. ) , order quantity and the order cycle. Offer member will be described to the customer's samples and have a initial quotation, final offer will quote after proofing. Three, computer design: customer to offer basic approval, will demand, physical, or vacuum forming samples to the sales department, production dispatch meetings require computer design department of the customer's real scanning and combined with the design of the print, making the vacuum forming products of graphic design. Four, vacuum forming proofing: customer approval after the computer design draft production dispatch meetings, according to the complexity of the vacuum forming products decided to adopt what kind of way to develop the mould, Plaster mold, copper, aluminum die) 3 -, the development cycle 5 days. Vacuum forming proofing in the majority with plaster mold proofing, and its operation steps are: 1. First the physical mud paste an outline of the shape by hand; 2. In vacuum forming a version on forming blister embryo; 3. With good vacuum forming special gypsum in blister MAO embryo, dried to form gypsum wool embryo; 4. The use of electric milling machine processing for gypsum MAO embryo and rules shape; 5. Manual grinding and manually add components; 6. Will each polishing good adhesive plaster components into a complete gypsum mould; 7. Play into the vacuum forming machine vacuum forming a complete sample; 8. According to the size of the finished product, the manual trimming, sealing side, complete the proofing process. If there is demand, printing proofing department at the same time will be vacuum forming of samples used in the paper, stickers or color box together, they can use full printing digital proofing function will reflect the actual printing results. Five, make the production mold: after samples approved by the customer, usually under a certain amount of production orders. The complexity of the production dispatch meetings according to the production, vacuum forming decided to adopt what kind of mould production: use gypsum mold production, mold making process is similar to the vacuum molding proofing, advantage is that the production cycle is short, lowest cost, make a sheet of the ( 60X110cm) Mold just one or two days time, lack of rough surface is vacuum forming products, the production of mould easily broken, poor durability to forming deep, high complexity, and sheet thickness of the product. USES the electroplating of copper, the process is to play good bubble shell surface spray a layer of conductive agent, add cell inside the thick copper plating layer, electroplating for up to 72 hours, and then to the copper pouring gypsum ( Increase hardness) , polishing and a blow hole processing, the use of the advantages of the electroplating of copper production is vacuum forming products surface is smooth, moderate cost, durability is moderate, the disadvantage is that the mold production cycle is long, can't complete the production of precision vacuum forming products. Aluminum vacuum forming mold production, mold production need to use the computer design drawings, then adopts CNC numerical control milling machine processing, production cycle is moderate, advantage is mold processing time is short, Drill air-vent work completed in CNC machining) , vacuum forming products high dimensional accuracy, mold durability is strong, the disadvantage is that the high cost. Due to the fully automatic high-speed vacuum forming machine of molding the range is about 66 x110cm, so whether gypsum mold, copper or aluminum mold, all need to be a single mold together, achieve molding size, we call this process puzzle, need to spell playing good porosity of aluminum or wood, spell good sheet of the mold after we call bottom die. For vacuum forming deep products, but also need to make the mould, in the bottom die sheet vacuum molding will be at the same time, the pressure from above sheet, sheet evenly stretched to every part, otherwise it will cause local thickness too thin. The whole production cycle of moulds should be 5 to 7 days. Six, vacuum forming production: using automatic high-speed vacuum molding machine, its basic principle is: will roll sheet into electric oven heated to softening condition, take the heat back to vacuum forming mould, mold up and vacuum, the softening of the sheet to the mold surface adsorption, at the same time, the cooling water to spray fog forming sheet surface, make its hardening, thick slices of vacuum molding machine molding sheet is automatically pulled to storage container, pneumatic cutting knife molding and forming sheet separation, to complete the process. Vacuum forming products the main quality problem mostly happens in the process: 1. Vacuum forming is not in place, it is to point to shape deformation, no vacuum forming as same as the mold in the shape of the product; 2. Vacuum forming, refers to products thin; 3. Guy, it is to point to the product should not be on the line mark; 4. Uneven thickness. All these problems need to be in a good mold, after debugging in place, including: sheet ahead of time, heating temperature and time, the strength of the vacuum and time, the location and time of the whereabouts of upper die and depth, the location of the puzzle in the mould, whether between mold and accessories and so on. Seven, punching processing, vacuum forming large products must pass a punch, with a knife version segmentation as a single piece of product. Its principle is on the punch at the bottom of the table has a large piece of plastic cutting board, put the layout of molding products on the chopping block, and to make the knife mould card on a single product, through the up and down movement of the punch, cutting out of a single product, but this way of cutting the shortcoming in the chopping block and the cutting die is easy to damage, resulting in the smooth cutting edges, burrs, for the high quality requirements of the blister, need to use cold stamping die ( A male die, a master pattern) And cold punching processing.