An injection apparatus for injecting molten plastic into a mold of articles made of thermoplastic material including bottle preforms. The injection apparatus includes an injection nozzle and a shutter for controlling flow of the molten plastic through the injection nozzle. A cylinder-piston system moves the shutter from open and closed positions of the injection nozzle. The cylinder-piston system includes a first chamber with a first passage for introducing fluid into the first chamber to open the shutter, and a second passage, different from the first passage, for discharge of fluid and of possible particles from the first chamber. A fluid distribution device with a first channel is connected to the first passage, and a second channel different from the first channel is connected to the second passage. The cylinder-piston system includes a second chamber having a third passage for introducing fluid into the second chamber to close the shutter.

A purging compound for removing a processing residue comprising a resin (C) to be purged, from a resin processing machine, comprising: a thermoplastic resin (A) and a non-ionic additive (B) of the following Formula (I) having a melting or softening point of lower than 150° C.:

Rn—X   (I)

(where R is a hydrophobic organic group, n is an integer of 1 or more, and X is a polar group), wherein a MFR (280° C. and a load of 2.16 kg) is 30 g/10 min or less, the difference of the solubility parameter between the resin (A) and the resin (C) is +1.6 to −1.6 (cal/cm.sup.3).sup.1/2, the difference of the solubility parameter between the additive (B) and the resin (C) is +1.6 to −1.6 (cal/cm.sup.3).sup.1/2, and the difference of the solubility parameter between the additive (B) and the hydrophobic organic group R is 0.7 (cal/cm.sup.3).sup.1/2 or more.

In an aspect, a mold stack may comprise two adjacent components, one at least partially defining a vent adjustable between a molding configuration and a cleaning configuration. A junction of the components may be adjustable between a molding configuration, wherein mating faces contact one another to define a parting line, and a cleaning configuration, wherein mating faces are separated to create a molding cavity extension therebetween and an auxiliary melt barrier prevents uncontrolled flashing from the extension.

In an aspect, a mold stack may comprise two adjacent components, one at least partially defining a vent adjustable between a molding configuration and a cleaning configuration. A junction of the components may be adjustable between a molding configuration, wherein mating faces contact one another to define a parting line, and a cleaning configuration, wherein mating faces are separated to create a molding cavity extension therebetween and an auxiliary melt barrier prevents uncontrolled flashing from the extension. In another aspect, a mold shut height adjustment mechanism may include a mold component movable along an operational axis of the mold, a stop member, movable along the axis relative to the mold component, having first and second stops for providing first and second gaps on the front and back sides, respectively, of the mold component when the stop member is deployed, and a spacer for use in selectively deploying the stop member.

A housing cleaning device for cleaning a housing of a screw machine comprises a support unit displaceable relative to the housing, and at least one housing cleaning unit arranged at the support unit, for cleaning an inner wall of the housing, wherein the at least one housing cleaning unit can be reversibly inserted into the housing. An associated shaft cleaning device for cleaning at least one treatment element shaft of the screw machine comprises a cleaning chamber, in which the at least one treatment element shaft can be arranged, and at least one shaft cleaning unit arranged in the cleaning chamber.

An exhaust unit for injection molding machine includes a purge cover having a nozzle through-hole allowing a nozzle of a cylinder of an injection molding machine to pierce through, an exhaust passage extending higher than the cylinder in the upward direction, and an exhaust port communicating with the exhaust passage, and a stationary platen connected to the exhaust port of the purge cover.

The invention relates to a cold runner block in a vertically operating injection molding machine for processing elastomer materials with an upper fixed molding platen and a molding platen arranged thereunder which is movable relative to the fixed molding platen, between which a molding tool having a plurality of mold cavities is arranged and wherein the cold runner block is arranged between the fixed molding platen and the molding tool, the cold runner block containing a distribution plate having the cold runners and containing a nozzle plate with nozzles each assigned to one of the plurality of mold cavities, which is characterized in that the distribution plate formed from a plurality of distribution strips (10-40) is arranged on a retaining plate (2), which can be fastened to the fixed, feed-side molding platen in such a way that each distribution strip (10-40) is connected by means of two bolts (3) to the retaining plate (2) in that the head (5) of each bolt (3) facing away from the distribution strip (10-40) forms a retaining element which is T-shaped in section, the retaining element being displaceably guided in the direction transverse to the distribution strip's longitudinal axis in guide rails (50) which are formed in the retaining plate (2) and are designed in section to complement the bolt head (5).

A plastic injection mechanism (20) of a plastic injection apparatus used for extruding molten plastic into a mold (16) comprises a fixing base (22); a material injection device (28) pivotably attached to the fixing base (22); and a rotating device (30) disposed between the material injection device (28) and the fixing base (22), the rotating device (30) being connected to the material injection device (28), wherein driving the rotating device (30) causes the material injection device (28) to move in a linked manner, enabling the material injection device (28) to rotate and shift with respect to the fixing base (22). The material injection device (28) of the plastic injection mechanism (20) can be adjusted to be in an inclined state, enabling a user to carry out excess material discharge and cleaning conveniently.

The invention discloses a probe and a method of manufacturing the same. The probe has a long cylindrical shape and includes a probe head (1), a probe body (2) at the rear of the probe head (1), and a probe tail (3) at a rear end of the probe body (2). The probe has a three-layer composite structure. The probe tail is a three-layer composite structure. The probe of the invention is used to detect a body tissue, and according to different electrical signals fed back by different body tissues, a type of the body tissue being detected by the probe can be known, thereby avoiding a medical accident in which a spinal cord or nerve is injured by a screw intruded into a vertebral foramen. The probe of the invention is simple in structure, convenient for use, easy in operation, of high reliability, high surgical safety and high success rate of surgery.

In an aspect, a mold stack may comprise two adjacent components, one at least partially defining a vent adjustable between a molding configuration and a cleaning configuration. A junction of the components may be adjustable between a molding configuration, wherein mating faces contact one another to define a parting line, and a cleaning configuration, wherein mating faces are separated to create a molding cavity extension therebetween and an auxiliary melt barrier prevents uncontrolled flashing from the extension. In another aspect, a mold shut height adjustment mechanism may include a mold component movable along an operational axis of the mold, a stop member, movable along the axis relative to the mold component, having first and second stops for providing first and second gaps on the front and back sides, respectively, of the mold component when the stop member is deployed, and a spacer for use in selectively deploying the stop member.