An inner mandrel for forming a variable taper component includes a master insert and a plurality of interlocking pieces. The master insert includes opposed tapered edge faces, each tapered edge face defining at least one locking feature, a first surface having a variable taper and a plurality of recesses configured to receive a portion of the variable taper component, and a tapered second surface opposite the first surface. Each interlocking piece includes opposed tapered edge faces, one of the opposed tapered edge faces defining a locking feature and another of the opposed tapered edge faces defining a receiving feature to engage the locking feature of an adjacent interlocking piece, a first surface defining a variable taper and a plurality of recesses configured to receive a portion of the variable taper component, and a tapered second surface opposite the first surface.

An injection mould and an injection moulding method are provided. The injection mould includes a base plate used to place a packaged chip to be injection moulded including a substrate and at least one of the chips fixed on the front substrate by a flip chip process. The substrate has a gas hole. Two or more gas ducts that extend in at least two intersected directions and connect with one another are formed in the base plate. Two ends of each one of gas ducts are open, and at least one of the gas ducts is buried into the base plate. Each one of gas ducts is provided with a gas outlet. When the packaged chip is placed on the base plate, the gas outlet connects with the gas hole of the substrate.

A needle guard grip device may include a body extending from a first end to a second end along a central longitudinal axis of the body. The body may include a plurality of ribs extending perpendicularly to the central longitudinal axis. The plurality of ribs may include a first set of longitudinally spaced ribs disposed on a first side of the central longitudinal axis, and a second set of longitudinally spaced ribs disposed on a second side of the central longitudinal axis that is opposite of the first side. Moving along the central longitudinal axis, ribs of the first set of longitudinally spaced ribs may alternate with ribs of the second set of longitudinally spaced ribs.

An injection molding apparatus includes: a first fixed mold attachment and detachment unit configured to attach and detach a first fixed mold; a second fixed mold attachment and detachment unit configured to attach and detach a second fixed mold; a first movable mold attachment and detachment unit configured to attach and detach a first movable mold; a first injection unit configured to inject a first molding material through a first gate opening of the first fixed mold; a second injection unit configured to inject a second molding material through a second gate opening of the second fixed mold; and a position changing unit configured to change a position of the first movable mold attachment and detachment unit such that the first movable mold is located at a position facing the first fixed mold or the second fixed mold. The position changing unit includes: a driving unit, a rotation shaft member configured to rotate by the driving unit, and a rotation disk coupled to the rotation shaft member and provided with the first movable mold attachment and detachment unit. The rotation disk is configured to rotate about a rotation axis of the rotation shaft member, and a flow path that communicates with the first movable mold and through which a medium flows is formed in the rotation shaft member.

In a parting locking device for an injection molding mold assembly, a first engagement element and a first spring are mounted in the base holder. With a locking plate inserted in a plate insertion hole, the first engagement element moves to a locking position where the base holder and a locking member are coupled together. When a locking bar is pulled out of a bar insertion hole, the first engagement element is pushed and moved to an unlocking position where the base holder and the locking member are uncoupled from each other.

An injection mould and an injection moulding method are provided. The injection mould includes a base plate used to place a packaged chip to be injection moulded including a substrate and at least one of the chips fixed on the front substrate by a flip chip process. The substrate has a gas hole. Two or more gas ducts that extend in at least two intersected directions and connect with one another are formed in the base plate. Two ends of each one of gas ducts are open, and at least one of the gas ducts is buried into the base plate. Each one of gas ducts is provided with a gas outlet. When the packaged chip is placed on the base plate, the gas outlet connects with the gas hole of the substrate.

A method for manufacturing a resin pipe joint with a joint body includes the following steps. Preparing a mold and a supply device configured to supply molten resin. The mold includes a first mold for an outer shape of the joint body and a second mold for an inner shape of the joint body. Combining the second mold with the first mold to form a cavity, into which the molten resin is injectable, inside the mold. Supplying the molten resin to the cavity in the mold. Solidifying the molten resin in the cavity after stop of the supply of the molten resin from the supply device. The second mold has a gap that connects the cavity to a discharge space outside the cavity and allows gas to flow.

A mold die includes a resin injection gate through which fluid resin serving as mold resin is injected toward a cavity, a resin reservoir to store the fluid resin flowing through the cavity, and a resin reservoir gate. The resin reservoir is provided on the side opposite to the side on which the resin injection gate is arranged with the cavity interposed. The resin reservoir gate communicatively connects the cavity and the resin reservoir. The opening cross-sectional area of the resin reservoir gate is smaller than the opening cross-sectional area of the resin injection gate.

A production method of a floor for quick side-slide installation includes the following steps: step 1: sorting of floor blanks; step 2: curing of the floor blanks; step 3: sanding of the floor blanks; step 4: cutting-to-thickness of the floor blanks; step 5: surface treatment of the floor blanks; step 6: cutting-to-length and molding of the floor blanks; step 7: spraying of anti-cracking oil on the floor blanks; step 8: plastic encapsulation of the floor blanks; step 9: application of a paint to back surfaces of the floor blanks; and step 10: application of the paint or vegetable oil to the floor blanks. A locking frame is hidden under bosses of a floor blank after being injection-molded, which achieves high locking accuracy and firm assembly.

An injection mould comprises first and second relatively movable mould halves defining at least one mould cavity between them, a first of the halves having a sprue through which moulding material is injected, a runner leading from the sprue to at least one gate into the or each mould cavity. The mould is characterised in that, when the mould halves are engaged one with the other, an insert projects from one mould half into a corresponding recess in the other mould half at a position corresponding to the or each gate into the mould cavity, the insert having a cutting groove extending therealong opening into an end face of the insert, the end face being in communication with the sprue and the opposite end of the groove being in communication with the gate, the groove thereby constituting at least a part of the runner, the groove extending at an acute angle to the relative direction of movement of the mould halves whereby, as the mould halves are separated, a cutting edge of the groove travels across the gate to shear the material in the gate.