An undercut processing mechanism includes: a core pin for forming an inner circumferential surface of a tubular projection; a slide core for forming an outer circumferential surface of the tubular projection; a sliding piece for causing the core pin to advance/retract in an axial direction of the tubular projection; a retaining piece for causing the sliding piece to advance/retract; a holder for accommodating the retaining piece such that the retaining piece can advance/retract; and a movement amount restrictor for restricting a movement amount of the core pin. The retaining piece is operable to advance/retract in a state where a stationary die and a movable die are closed. When the core pin retracts in conjunction with retraction of the retaining piece and a movement amount of the core pin reaches a restricted distance, the core pin and the slide core retract together, thereby allowing an undercut portion to be demolded.

There is provided a manufacturing method for molding a liquid supply member by using a first mold and a second mold. The method includes a first molding step of performing injection molding to form a first component part of the liquid supply member and a plurality of component parts of the liquid supply member other than the first component part at different positions from each other, with the first and the second mold closed relative to each other, a contacting step of moving each of the formed plurality of component parts relatively to the first component part to bring the formed first component part into contact with the formed plurality of component parts, with the first and the second mold opened relative to each other, and a second molding step of performing injection molding to join the first component part and the plurality of component parts.

The disclosure relates to a plastic faucet body and a molding tool. The faucet body includes a left water inlet pipe and a right water inlet pipe, wherein a left valve seat installation recess is formed in the left water inlet pipe and a right valve seat installation recess is formed in the right water inlet pipe. A connecting cross-beam is disposed between the left water inlet pipe and the right water inlet pipe, wherein the connecting cross-beam is provided with a water outlet and a middle water channel is formed within the connecting cross-beam. The middle water channel includes a left water inlet channel and a right water inlet channel, wherein the left water inlet pipe and the water outlet are connected with the left water inlet channel, and the right water inlet pipe and the water outlet are connected with the right water inlet channel, and the left water inlet channel and the right water inlet channel are arc-shaped or U-shaped.

An injection molding apparatus comprises a support base and a mold carrier removably mounted to the support base. The mold carrier includes a mounting plate with attachment features for engaging the support base. A mold with two mold plates is slidably mounted to the mounting 5 plate. A clamp is operable to move the plates between open and closed positions. In the closed position, the plates abut one another. In the open position, the plates are spaced apart for removing molded articles.

The invention relates to a method and a device for demolding annular elastomeric molded parts from a mold core of an injection mold which has an inner mold core (1) and outer mold jaws and in which the molded parts (9) are produced parallel to one another in annular mold cavities (5) of the mold core (1). According to the invention, after removal of the outer mold jaws, the mold core (1), which contains the produced elastomeric molded parts (9) on the surface thereof, is set at such a high rotational speed about the longitudinal axis thereof that the internal diameter of the elastomeric molded parts (9) is increased because of centrifugal force to such an extent that the molded parts (9) are released from the mold cavities (5) and can be removed from the mold core (1) in the axial direction (10) while they are still rotating.

A melt dispenser for plastic molding comprises a barrel unit removably mountable to a drive unit. A feed screw is received within a barrel of the barrel unit and is rotated by the drive unit to dispense molten molding material through an outlet of the barrel. A coupling mechanism can be engaged to hold the barrel unit against the drive unit and on to connect the screw to the drive. The coupling mechanism is operable by an actuator.

An injection molding apparatus comprises a support base and a mold carrier removably mounted to the support base. The mold carrier includes a mounting plate with attachment features for engaging the support base. A mold with two mold plates is slidably mounted to the mounting plate. A clamp is operable to move the plates between open and closed positions. In the closed position, the plates abut one another. In the open position, the plates are spaced apart for removing molded articles.

A faucet main body structure, an injection molding mold and a molding method are provided. A main body inner core is fixed in the injection molding mold by a new fixing method, ensuring that no additional positioning structure is required to be provided on the outer surface of the main body inner core, so that in the case that the main body inner core is subjected to over-molding, a main body injection-molded layer of the main body injection-molded part is enabled to closely attached to the main body inner core without causing gaps therebetween, which ensures that the faucet main body structure is not susceptible to water seepage, and prolongs the service life of the product.

A connector is formed by fixing two or more connector parts each made from a resin to each other by press fitting or with an adhesive. At least one weld part regulating thermal deformation between the connector parts is formed in a boundary portion between the adjoining connector parts.

An injection molding apparatus is usable in an injection machine to form an injection product. The slim injection molding apparatus includes a hot runner plate attachable to one side clamping plate of the injection machine and provided with a hot runner system; an upper core disposed in the hot runner plate; a lower core attachable to an opposite side clamping plate of the injection machine to face the upper core, the lower core configured to couple with the upper core to define a cavity corresponding to the injection product when the lower core is coupled to the upper core; and an ejecting core disposed in the lower core, the ejecting core configured to push the injection product upward when the upper core is separated from the lower core.