General injection molding factories do not have their own mold water connection specifications. Mold water connection and equipment water heating or cooling device configuration cannot meet same water connection for each production, resulting in fluctuations in product quality during production process. Now take STAUBLI® water collector (water tray) as an example to illustrate standardization of mold water connection. Each company can select its own water connection specifications according to its own situation to achieve purpose of same water connection for each production, fast and accurate connection.

 

(1) Temperature difference between inlet and outlet water does not exceed 5 ℃.
(2) Distance between hole wall and cavity wall is about (1.5-3) D, and distance between hole walls is about (2.5-4) D. (Distance of small inserts, sliders, lifter blocks, etc. can be appropriately reduced)
(3) In general, when designing water channel, try to follow surface shape of product.
(4) Bottom of water hole of quenched part is made into an arc shape to reduce risk of quenching cracking.
(5) An independent cooling circuit insert or cooling water jacket should be defined near hot nozzle. Cooling water hole should be surrounded on at least three sides, water temperature of left and right hot nozzles should be independently controlled.
(6) Water channels of cavity on moving and fixed sides of mold must be separated from left and right cavities, cannot be connected in series.
(7) Water channels between sliders and lifters can be connected in series, water channels between sliders and lifters between left and right cavities can also be connected in series, but water channels connected by sliders and lifters must not be connected in series with cavity.
(8) Parts with a product area of 20cm2 must be equipped with cooling water channels.
(9) Water circuits of hot nozzles, cavities, and sliders should be connected to different mold temperature controllers. When number of water circuit groups exceeds 6 groups of water collecting trays, water circuits with same temperature can be connected in series outside mold temperature controller (it is strictly forbidden to connect in series inside mold).
(10) Mold core and inserts need to be tested separately. Edges of tapping cannot be chamfered to prevent leakage beyond sealing ring. Just remove burrs.
(11) Water inlet and outlet interfaces are on non-operating or ground side of mold. Water inlet of cooling water channel is marked (in) and water outlet is marked (out) and numbered.
(12) Nozzles on the surface of mold should be sunk into mold. STAUBLI® connector should not exceed width of mold frame.
(13) For single-color molds: STAUBLI® water collector is placed on non-operating side, one for each movable mold and fixed mold. Multi-color mold (two-color, three-color): STAUBLI® water collector (water tray) on fixed mold side, homemade water collector block on movable mold side (number of water collector blocks depends on configuration of injection molding machine), one water collector/block is placed on non-operating side and one on operating side.
(14) Mold water inlet and outlet markings: English letters + data (water inlet--- in; water outlet--- out)
(15) Each water channel is tested for 2 minutes at a pressure of 15 bar, with a flow rate of 5L per minute.
(16) All quick connections on the top side of mold need to have drainage grooves to prevent water from leaking into mold cavity.

(1) Quick-connect water collection tray model selection

 

 

(2) Quick-connect water collection tray actual mold example

 

 

Description:
(1) For single-color products, mold is divided into six mold temperature control areas, namely 3 fixed molds and 3 movable molds.
(2) 3 mold temperature control areas for fixed molds: operating side cavity, non-operating side cavity, gate hot runner area.
(3) 3 mold temperature control areas for movable molds: operating side cavity, non-operating side cavity, operating side and non-operating side sliders/top blocks.
(4) Temperature control of mold temperature control areas: For six temperature control areas set for single-color molds, six mold temperature controllers can be used for precise control. If conditions are not met or non-hot runner mold has similar temperature requirements, temperature control is combined for areas, and water connection is preferably parallel.

 

 

Description:
(1) For two-color products, mold is divided into 7 mold temperature control areas, 4 fixed molds and 3 movable molds.
(2) 4 mold temperature control areas of fixed mold: gate hot runner gate area, operating side cavity, non-gate hot runner gate area. Non-operating side cavity.
(3) 3 mold temperature control areas of movable mold: operating side cavity, non-operating side cavity, operating side and non-operating side slider/top block.
(4) Temperature control of mold temperature control area: For 7 temperature control areas set for two-color molds, 7 mold temperature controllers can be used for precise control. If conditions are not met or non-hot runner mold has similar temperature requirements, temperature control is combined, and it is best to connect water circuit in parallel.

 

There should be uniform specifications for water collection blocks, joints, and hoses.