B29C2945/76254

In-mold decoration molding method and in-mold decoration molding machine

A warm-air blowing circuit and another warm-air blowing circuit are disposed so as to heat a film from both sides of a projection side and a recess side of a die, warm air reaches and heats the film from the time of supplying of the film, warm air continues to enter a space in which a resin is to be ejected even after the die is closed, and thereby the film is likely to extend. Therefore, the film is unlikely to be torn at the time of molding when the film is likely to be shaped after a shape of the die and it is possible to prevent broken pieces of the film or broken pieces of a decoration film from being mixed and being stuck to the surface of the die such that it is possible to improve quality of the external appearance of a molded product.

METHOD FOR SETTING UP A MOLDING SYSTEM

The present disclosure provides a method for setting up a molding system, wherein the molding system includes a molding machine and a mold disposed on the molding machine, and the mold has a mold cavity to be filled with a molding resin from the molding machine. The method includes generating first and second state waveforms using a predetermined packing pressure profile; obtaining an updated packing pressure profile based on the first and the second state waveforms; and setting up the molding machine based on the updated packing pressure profile to perform an actual molding process to prepare the molding product. The first and the second state waveforms express a relationship between an in-mold pressure and an in-mold temperature at different sensing sites of the molding resin.

PRESSURE SENSOR FOR A METAL OR PLASTICS PROCESSING TOOL
20190111604 · 2019-04-18 ·

A space-saving pressure sensor for a metal or plastics processing tool is configured to perform date stamping during injection molding with the processing tool. The pressure sensor is configured to be inserted into a single drilled hole of the tool. A first cast-compatible mark and a second cast-compatible mark of the pressure sensor may be adjusted against one another in such a way that a variety of different date marks can be created, which may then be applied to different injection-molded products. The pressure sensor may be used within the framework of manufacturing an injection-molded product.

Method and apparatus for producing hollow articles made of injection moulded plastic material
20190084202 · 2019-03-21 ·

A method and apparatus for producing hollow articles made of injection moulded plastic material by a mould having a die within which there is inserted a core, and at least one injector including a pin valve displaceable between a closing position and an opening position for injecting the pressurized plastic material into a space comprised between the die and the core. During the injection, any flexural deflection of the core is detected and the pin valve of the or of each injector is displaced in a controlled fashion to adjust a pressure and a flow rate of the injected plastic material, so as to reduce or eliminate such deflection of the core.

INJECTION MOLDING MACHINE

An injection molding machine including a mold clamping device for clamping a mold comprising a fixed mold and a movable mold by a predetermined mold clamping force; an injection device for injecting and filling a resin into the mold by a predetermined injection pressure, wherein the mold clamping device enables natural compression of the resin at least as the resin inside the mold solidifies; and a molding machine controller at least including a specific molding condition setting function for setting a specific molding condition by obtaining a parting opening amount which becomes a predetermined gap between the movable mold and the fixed mold during injection filling, a molding injection pressure which becomes an injection pressure capable of molding a good product and a molding clamping force which becomes a mold clamping force capable of molding a good product; a fast injection condition setting function for setting, as a fast injection condition, a fast injection speed from the start of injection, the fast injection speed being higher than the injection speed set by the specific molding condition, and a fast injection section for continuing the fast injection speed; and a molding control function for mold-clamping the mold clamping device by the molding clamping force, setting the molding injection pressure to a limit pressure, injecting and filling the mold by the fast injection condition from the start of injection, and filling the mold by the specific molding condition by the end of the fast injection section.

Method of injection molding using one or more external sensors as a virtual cavity sensor

A injection molding method involves measuring, using at least one external sensor, a change in a parameter of a mold side of a mold cavity, approximating a condition within the mold cavity based on the change in the parameter, such as pressure within the mold cavity or flow front position, and comparing the approximated condition to a trigger point. If the approximated condition equals or exceeds the trigger point, activating a virtual cavity sensor having an optimal pre-defined pressure-time curve, and upon activation, the virtual cavity sensor tracks an approximated condition calculated from the change in parameter measurements measured by the at least one external sensor over time. In an embodiment, results of the approximated parameter tracking can be used in conjunction with an optimal pre-defined pressure-time curve.

SYSTEM AND METHOD FOR MONITORING INJECTION MOLDING PROCESS
20240278471 · 2024-08-22 ·

The present disclosure relates to a system and method for monitoring an injection molding process which may calculate injection time and packing time by attaching an acceleration sensor to an injection molding mold with bolts and measuring an amplitude change of a vibration signal of a mold during injection molding, detect mold closing and opening signals of the mold using a magnetic hall sensor, and monitor the injection molding process by measuring cycle time and cooling time, thereby simplifying installation and maintenance and reducing installation costs.

Method for Controlling a Rate or Force of a Clamp in a Molding System Using One or More Strain Gauges

A method of monitoring and controlling a molding clamping apparatus in an injection molding or other molding process is disclosed. The method includes creating a target strain profile, receiving a deviation limit, receiving a change in strain relating to a mold while it is closing from a first strain gauge, identifying a deviation from a target strain profile based on the output from the first strain gauge, determining that the deviation exceeds the deviation limit, and adjusting the rate or force of clamp movement. The target strain profile may have a first portion relating to a clamp closing process, a second portion relating to a filling process, and a third portion relating to a clamp opening process. The first portion relating to the clamp closing process may include an intermediate portion relating to a coining process having an intermediate clamp force setpoint.

Press, Actuator Set and Method for Encapsulating Electronic Components with at Least Two Individual Controllable Actuators

The invention relates to a press for encapsulating electronic components mounted on a carrier, comprising: at least two press parts displaceable relative to each other, a drive system for the displacement of the press parts, and an intelligent control adapted to control the drive system of the press parts wherein the drive system comprises at least two individual controllable actuators, the intelligent control further connects to plural displacement sensors for detecting the relative displacement of the press parts, and wherein the intelligent control is adapted to control the actuators of the drive system dynamically over time based on the measured values detected with the displacement sensors. The invention also relates to an actuator set to convert a prior art press into a press according to the present invention as well as to a method for encapsulating electronic components mounted on a carrier.

INJECTION MOLDING SYSTEM

An injection molding system includes a molding device, an inspection device configured to inspect a molded product and a control device that includes a storage unit, and a reception unit configured to receive a change content of a parameter included in a standard molding condition. The control device executes a first control of forming the molded product under a second molding condition in which the parameter is changed based on the change content, a second control of forming the molded product under a third molding condition in which the same parameter is changed, a third control of associating the second molding condition with an inspection result of the molded product formed under the second molding condition and storing the association, and a fourth control of associating the third molding condition with the inspection result of the molded product formed under the third molding condition and storing the association.