A platen for use with an injection molding machine includes a body having an opening for receiving a ring protruding from a mold for aligning the body and the mold. The opening includes a tapered recess having a surface extending radially outward from the opening. The tapered recess defines opposed edges along an outer surface of the body, the opposed edges converging in a radially outward direction away from the opening.

An injection molding machine capable of opening/closing a movable mold relative to a stationary mold by moving a crosshead backward and forward to move a movable platen backward and forward relative to a stationary platen through a toggle link. The injection molding machine includes a reciprocating mechanism that receives a counterforce exerted on the crosshead in the back-and-forth direction when the movable mold and the stationary mold are closed, and a load acquisition unit that acquires a load exerted on the reciprocating mechanism in a direction perpendicular to the back-and-forth direction of the crosshead.

Provided is a mold clamping device that can simplify the component count or structure by including a mold thickness adjustment mechanism that reduces the load on a power source, is easily maintained, and has high design flexibility. Also provided is a mold clamping device that can set a long distance (daylight) between molds without having to upsize the entire mold clamping device and can simplify the component count or structure.

A mold clamping device for split molds includes a first platen, a second platen, a pressure receiving platen, and a mold thickness adjustment mechanism disposed on the pressure receiving platen. At least one of the first platen and the second platen is able to move back and forth so as to approach or depart from the other. The pressure receiving platen is located on a side remote from the first platen, of the second platen. The mold thickness adjustment mechanism includes a rod-shaped rotation member, a power source configured to rotate the rotation member around a rotation axis of the rotation member, the rotation axis being parallel to a longitudinal direction of the rotation member, and a pair of converters configured to convert rotation direction of the rotation member into a movement direction of the second platen. A mold clamping device for split molds includes polygonal first and second platens, a pressure receiving platen, and a toggle mechanism. At least one of the first platen and the second platen is able to move back and forth so as to approach or depart from the other. The pressure receiving platen is located on a side remote from the first platen, of the second platen. The toggle mechanism is disposed between the second platen and the pressure receiving platen and on a diagonal line of the second platen and configured to cause the first and second platens to approach or depart from each other.

An injection molding machine includes a machine base extending lengthwise along a machine axis. The base has a platen support portion extending along a first axial portion of the base, and an injection unit support portion extending along a second axial portion of the base. The machine further includes a platen supported by the platen support portion for carrying a mold half apparatus. The machine further includes a first injection unit supported by the injection unit support portion for discharging a first melt through the platen into a first mold inlet of the mold half apparatus, and a second injection unit supported by the injection unit support portion for discharging a second melt around the platen into a second mold inlet of the mold half apparatus.

A one-step injection molding mold of a tubular product. The mold divides a product into two parts for one-step injection molding, and includes a mounting retainer plate, runner stripper plate, front and rear mold plates, ejector retainer plate, ejector baseplate and a mounting baseplate, which are stacked, wherein the ejector retainer plate and baseplate are fixed together, two side edges thereof having square blocks, a first and a second hydraulic cylinder are arranged at the top of the mold, a third hydraulic cylinder is arranged on the external side surface of the mounting baseplate, and a fourth hydraulic cylinder is arranged on one side surface of the front mold plate adjacent to the rear mold plate. Further, a one-step injection molding method of a tubular product, including steps 1-6. The mold and the molding method thereof may increase the product yield and ensure a safe production process.

A toggle lever clamping unit for an injection molding machine includes fixed and movable platens, a support plate, a toggle lever mechanism operatively connected with both the support plate and the movable platen, a cross clamp operatively connected with the toggle lever mechanism and movable along a machine longitudinal axis, and an electric drive for moving the cross clamp. In addition, a hydraulic drive is operatively connected with the cross clamp and includes a fluid-operated piston cylinder system, with the lengths of the cylinder and the piston rod being coordinated with one another such that the hydraulic drive follows a travel path of the cross clamp as the movable platen travels between an open position of the clamping unit, in which the toggle lever mechanism is swung in, and a closed position in which the toggle lever mechanism assumes a predeterminable extended position and a clamping force is built up.

A mold for coating a pipeline section with molten coating material from an injection molding machine, wherein the mold Includes a shell of impervious material reinforced by an exoskeleton of non-distensible material. An assembly for supporting a mold including a plurality of mutually separable shell bodies for coating a pipeline section, wherein the assembly includes motorized opening and closing of the shell bodies in a straight line. An assembly for supporting a bent pipeline section wherein the assembly includes a base and a pair of arms extending from the base, wherein each arm includes a respective clamping collar for clamping a bent pipe section between the arms. A vehicle for induction heating a bent pipeline section, wherein the vehicle includes a helical induction coil; and wheels arranged to guide movement of both ends of the induction coil through a tubular inside face of a bent pipeline section.

A toggle lever clamping unit for an injection moulding machine includes fixed and movable platens, a support plate, a toggle lever mechanism operatively connected with both the support plate and the movable platen, a cross clamp operatively connected with the toggle lever mechanism and movable along a machine longitudinal axis, and an electric drive for moving the cross clamp. In addition, a hydraulic drive is operatively connected with the cross clamp and includes a fluid-operated piston cylinder system, with the lengths of the cylinder and the piston rod being coordinated with one another such that the hydraulic drive follows a travel path of the cross clamp as the movable platen travels between an open position of the clamping unit, in which the toggle lever mechanism is swung in, and a closed position in which the toggle lever mechanism assumes a predeterminable extended position and a clamping force is built up.

A platen for use with an injection molding machine includes a body having an opening for receiving a ring protruding from a mold for aligning the body and the mold. The opening includes a tapered recess having a surface extending radially outward from the opening. The tapered recess defines opposed edges along an outer surface of the body, the opposed edges converging in a radially outward direction away from the opening.

A mold for use with an injection molding machine includes a body having a surface and a ring protruding from the surface for aligning the body and a platen. The ring defines a right circular cylinder having a protruding end, the protruding end having subtracted therefrom a generally wedge-shaped portion, the protruding end forming a tapered end.