A velcro inserting type universal synthetic resin mask with a replaceable filter, an injection molding apparatus therefor, and a manufacturing method thereof are described. The velcro inserting type universal synthetic resin mask with a replaceable filter can include a mask guide with a rim-like shape which supports a filter insertion portion therein and is formed of a synthetic resin by an injection molding process using an upper mold and a lower mold along with the filter insertion portion; and a velcro for attachment of a filter which is placed at a front portion of a velcro entity for attachment of a filter forming portion of the upper mold during the injection molding process for the mask guide and the filter insertion portion and formed on the mask guide when inserted such that the velcro for attachment of a filter is fixed through a velcro entity insertion hole of the upper mold.

In order to calculate a ball screw abrasion amount of an injection-axis ball screw or a mold-clamping-axis ball screw, a position of a ball nut fitted to the ball screw is photographed by a camera installed in an injection molding machine. Then, if the photographed position of the ball nut is found, as a result of analysis of an image captured by the camera, to be deviated from the position of the ball nut when a ball screw has no abrasion, it is determined that the ball screw is abraded.

An injection molding machine, which includes a safety door that can be opened and closed, is further equipped with a servo motor configured to open and close the safety door, a presence detector configured to detect whether or not an operator or object is present within a door operating space of the safety door or within a predetermined vicinal area of the safety door including the door operating space, and a controller configured to control the servo motor with a reference control amount in order to perform a closing operation of the safety door, and during a time it is detected by the presence detector that an operator or object is present, to cause a control amount that controls the servo motor in order to perform the closing operation of the safety door to decrease from the reference control amount.

Injection molding apparatuses and methods wherein a valve pin is controllably driven upstream and downstream along an axis between a first closed position where the tip end of the valve pin obstructs the gate to prevent the injection fluid from flowing into the cavity, a full open position and one or more intermediate positions, wherein the valve pin is drivable to be disposed or held in a selected intermediate position for a selected period of time during the course of an injection cycle where the tip end of the valve pin restricts flow of injection fluid through the gate to the mold cavity.

An injection molding system for implementing a molding process, comprising: a mold, a controller, a position sensor, wherein during an injection cycle, the system feeds the fluid material to one or more nozzles at one or more predetermined times, the controller being configured to receive and process the output signal from the position sensor to determine one or more actual flow rate indicative parameters, a user interface that displays one or more pin positions and one or more flow rate indicative parameters by which a user of the system can track the one or more pin positions and flow rate indicative parameters in real time during the injection cycle.

An apparatus for taking out a molded product is provided, the apparatus being capable of suppressing displacement vibration of an attachment mounted at a leading end of each of one or more approach frames by active control using one or more electromagnetic actuators. The apparatus includes an active vibration suppressing system. One or more electromagnetic actuators are mounted to the attachment of each approach frame or each approach frame.

A mould closing unit (100) for an injection-moulding machine has an electromechanical closing mechanism (M) for opening and closing an injection mould, said electromechanical closing mechanism (M) being actuated by means of at least one spindle unit (10) having at least one spindle (12) and at least one spindle nut (14). Cooling by way of cooling ducts (32) for heat dissipation from the spindle unit (10) is provided. Since the spindle (12) has, in the core, at least one bore (24) in which a cooling and/or lubricating medium is passed into the region of the contact points between the spindle nut (14) and the spindle (12) via at least one lance (20), efficient cooling of the spindle unit is achieved.

A clamp assembly for an injection molding machine includes (a) a clamp cylinder housing and (b) a clamp piston affixed to an end portion of a tie bar and slidable within the housing among a clamping position, a mold break position, and a meshing position disposed axially intermediate the clamping and the mold break positions. The clamp assembly further includes (c) a clamp chamber for urging the clamp piston towards the clamping position when pressurized; (d) a return device for urging the clamp piston towards the meshing position when pressure in the clamp chamber is relieved; and (e) a mold break chamber for urging the clamp piston towards the mold break position when pressurized. The mold break chamber is bounded axially by opposed surfaces of the tie bar and the return device.

Injection molding apparatuses and methods wherein a valve pin is controllably driven upstream and downstream along an axis between a first closed position where the tip end of the valve pin obstructs the gate to prevent the injection fluid from flowing into the cavity, a full open position and one or more intermediate positions, wherein the valve pin is drivable to be disposed or held in a selected intermediate position for a selected period of time during the course of an injection cycle where the tip end of the valve pin restricts flow of injection fluid through the gate to the mold cavity.

A method and apparatus for performing an injection molding cycle comprising drivably interconnecting a valve pin to an electric motor actuator and controllably operating the electric motor to drive the valve pin at one or more reduced rates of upstream or downstream travel based on either detection of the position of the pin or actuator or on a preselected length of time at which to drive the valve pin.