Abstract: Method and apparatus for casting a concrete product with a substantially horizontal slipform casting process, wherein the concrete mix is fed at least in one step through a limited cross-section moving progressively along with the cast, whereby the height of the product forming part (1) is changed during the cast. The invention also comprises a product forming part (1) having an adjustable height.

Abstract: A mold for molding optical fiber connector includes a core pin, a cavity mold and a sprue hole defined on the sidewall of the cavity mold. The core pin is used to mold the blind hole of the optical fiber connector. The cavity mold and the core mold cooperatively define a molding cavity for forming the optical fiber connector. A support block is configured in the molding cavity. The molding cavity includes a lens forming portion used to mold the lens and the support block configures a cutout to support the blind hole forming portion to make the blind hole forming portion align with the lens forming portion during the molding process, the opening of the cutout is towards the sprue hole.

Abstract: An extrusion device is described herein, including an inventive die and mandrel that enable the production, using a conventional ram extruder, of strong coherent extremely thin-walled tubes having a wall thickness in the range of about 0.020 mm and about 0.080 mm.

Abstract: Disclosed is a mold wherein one bottom surface member (2) and four lateral surface members (3) are assembled. The sides of each lateral surface member (3) are respectively provided with a projection (5) and a recess (6) for combining the lateral surface members together, and the projection (5) of one lateral surface member (3) is engaged with the recess (6) of the adjacent lateral surface member (3). By using the one bottom surface member (2) and four lateral surface members (3), a mold can be assembled or disassembled without using screw or bolts. Consequently, the assembly or disassembly work of the mold is dramatically simplified, thereby improving work efficiency significantly.

Abstract: A mold comprises a core plate receiving a core insert, a cavity plate receiving a cavity insert and an ejection mechanism configured to eject the core insert. The core insert defines a first molding surface and the cavity insert defines a second molding surface cooperating with the first molding surface. The ejection mechanism includes a top plate; a sleeve fastening to the core plate and an ejection member to eject the core. The ejection member including an ejection rod and an ejection head slidably received in the sleeve. The ejection rod includes a main rod fastened to the top plate, a connecting body, and an engaging body. The ejection head includes an ejection portion and an engaging portion defining an engaging hole, a slot, and an opening, wherein the connecting body extends through the slot causing the engaging body to engage with the engaging hole.

Abstract: A mold includes a female mold defining a receiving space and a male mold including a body and a core protruding from the body. The male mold and the female mold cooperatively define a molding cavity for forming a molding product. The core includes a distal end portion inserted into the receiving space. The distal end portion is configured for forming a through hole of the molding product. The female mold includes two protruding ribs arranged at a parting line between the female mold and the core. The protruding ribs of the female mold is located on opposite sides of the distal end portion, and extend around the distal end portion. The core includes two protruding ribs formed on the distal end portion at the parting line between the female mold and the core. The protruding ribs of the core extend around the distal end portion.

Abstract: Disclosed is a mold having sliders, comprising a fixed half, an angle pin, a slider pushing element, a moving half, a main block, a driving block and a sub-block. The angle pin comprises an angle pin body; the slider pushing element has a push face and a pull back face; the main block is installed on the moving half and driven by the angle pin body; the driving block is installed on the main block and has a driving face in accordance with the push face, and a push slope and a pull slope are formed at the other end; the sub-block is slidably installed on the main block and has a push out face in accordance with the push slope, the sub-block can be driven by the push slope and driven by the pull slope to be initialized. The present invention can simplify the complicated structure of a mold.

Abstract: A mould having core-pulling mechanism includes a core plate, a core insert, a cavity plate, a cavity insert, a guide dowel and a slide block. The cavity insert and the core insert define a mould cavity. A sliding groove of the core plate and a recess of the core insert are communicated with the mould cavity. The guide dowel is received in a dowel-receiving hole of the cavity plate and tiltedly extending out of the cavity plate. The slide block has an inserting block and a forming block. A lower portion of the slide block is slideably located in the sliding groove. The guide dowel can be inserted into an angle guiding hole of the slide block. The inserting block can be inserted into the recess. The forming block may enter into the mould cavity. The mould produces plastic products on the inner surface of which the groove is formed.

Abstract: A device and a method for forming a ceramic ferrule blank are provided. A shaped wire (2) is disposed in a mold cavity (1) for form a blank, a knock pin mold (4) is disposed in a lower opening of the mold cavity (1), an axle hole (5) for the shaped wire (2) to pass through is opened in the knock pin mold (4), two punching half dies (6) and corresponding half die press heads (7) are disposed over the mold cavity (1), a wire groove (8) for receiving the shaped wire (2) is opened on a side of the half die press head (7), one end of the shaped wire (2) is fixed over the knock pin mold (4), and the other end is clipped by a wire clip unit (9).

Abstract: An improved mold for molding composite structures inside the closed cavity of the mold that uses a projecting tool member, a compression plate and at least two side plates located inside an expansion cavity formed in the mold. The mold includes a base made up of two mold sections that when jointed form a partially enclosed mold cavity. Located over the mold cavity are two side plates each with an inside beveled edge. The side parts are aligned inside the expansion cavity so that the two beveled edges are adjacent a form a large V-shape void. The compression plate includes a V-shaped projection that fits into the V-shaped void. The improvement includes a U-shaped, heat expandable boot located between the inside surfaces of the projecting tool member, the inside surfaces of the two side plates, and the inside surfaces of the mold that evenly distributes the external forces and evenly distributes the forces created by expansion during the curing stage to product structures with uniform side walls.

Abstract: An extrusion device is described herein, including an inventive die and mandrel that enable the production, using a conventional ram extruder, of strong coherent extremely thin-walled tubes having a wall thickness in the range of about 0.020 mm and about 0.080 mm.

Abstract: An angled core-pulling mechanism of mold includes a core insert, a shaping core and a slide block of which a rear end longitudinally defines a slide passage having a bottom side slanted downward from front to rear. The core insert defines a shaping cavity, a slide hole extending downward and slanting forward with a top communicating with the shaping cavity, and a receiving fillister having a level bottom face and with a top being connected with a bottom of the slide hole. One end of the shaping core is slantwise slidably disposed in the slide passage, and the other end is slantwise slidably disposed in the slide hole. The slide block can longitudinally move along the bottom face to drive the shaping core to slide slantwise upward and downward along the slide hole so that the shaping core can be inserted into or withdrawn out of the shaping cavity.

Abstract: A stamping mold includes a base, a mold holder and a stripper. The base defines a first through hole and includes a protruding block. The mold holder defines a second through hole and a plurality of receiving holes, and each receiving hole receives a mold insert and selectively corresponds to the protruding block. The mold holder is located on a top of the base and touches the protruding block. The stripper includes a cover defining a plurality of holes and a positioning shaft. The stripper is located on the mold holder via the positioning shaft passing through the second and the first through hole, and a free end of the positioning shaft is blocked under the base. The mold holder can rotate about the positioning shaft. When the stripper moves to a lowest location, the mold insert on the protruding block protrudes from the corresponding hole of the cover.

Abstract: An apparatus for preparing frozen comestibles including a container having an interior portion holding a refrigerant solution, and a mold insert attached to the container. The mold insert includes a base, molding cavities extending therefrom, and a heat exchanger in communication with the molding cavities. The mold insert is received within the container such that the molding cavities are housed within the interior portion of the container and the heat exchangers are submerged within the refrigerant solution. The molding cavities include exposed openings that receive fluids to be frozen. When the refrigerant solution is at a sufficiently cool temperature, the fluids freeze into a shaped frozen comestible.

Abstract: A device for the preparation of pipe ends, prior to jointing them together using an inserted close-fitting spool and an external close-fitting sleeve, consists of a plain cylindrical mandrel (10) adapted to be firmly fixed centrally inboard of an end zone of the bore of a pipe (12) so as to project from the end of the pipe, a hydraulic cylinder (46) adapted to be removeably mounted co-axially on the projecting end of the mandrel, and a piston (48) in the cylinder slideable along the mandrel and adapted to carry an interchangeable annular tool, whereby the tool can be force fed axially along the mandrel into the pipe to modify the bore thereof.

Abstract: A mold includes a die block, a core, two fixing bolts and four screw bolts. The die block includes a top surface, and two side surfaces. The top surface defines a cavity receiving the core. The core includes two opposite outer side surfaces. One side surface defines a first and a second guiding slots extended to the other side surface and communicating with the cavity. One outer side surface defines a third guiding slot aligned with the first guiding slot. The other outer side surface defines a fourth guiding slot aligned with the second guiding slot. One of the fixing bolts inserts into the first and the third guiding slots. The other one of the fixing bolts inserts into the second and fourth guiding slots. The at least two screw bolts respectively engage with the die block until resisting on a corresponding fixing bolt.

Abstract: A mold for use in forming form a porous molded product via an injection molding process is provided. The method comprises injecting a material into the mold comprising multiple layers of shaping elements extending through a cavity, each layer of shaping elements including multiple shaping elements; and removing the molded product from the mold, the molded product having a porous structure formed by at least some of the shaping elements of the layers of shaping elements. The porous structure includes a multiplicity of ordered structural members defining the porous structure, the multiplicity of structural members intersecting to form structural member intersections, and a multiplicity of the pores defined by the multiplicity of structural members.

Abstract: A mold for the production of molded concrete bricks has mold recess bodies guided in openings in side walls of a mold insert, which openings are adapted to the contours of the recess bodies, in order to produce recesses in a molded concrete brick produced using this mold. The recesses reach all the way to the underside of a brick, and are supported on one or more sections of the edging of the opening. The wall thickness of the mold insert side wall can have a greater wall thickness in the region of the recess bodies. Preferably, the mold includes multiple mold inserts, and recess bodies that are similar in terms of position and movement direction are coupled mechanically with one another in their movement, and can be displaced together via common drive devices.

Abstract: An electric cable for conveying signals, the cable having a diameter of less than 2 mm and comprising at least one conductor in an insulating sheath, the sheath having a dielectric constant ? of less than 1.7. To achieve this, the sheath is made of PTFE and it includes at least one continuous cell.

Abstract: An injection molding machine (10) comprises an injection molding tool (14) having a mold cavity, in which a molded part can be produced by overmolding a mold core of metal inserted into the mold cavity using an injection molding material, and a melting tool (18) by means of which the mold core overmolded with the injection molding material can be melted out, wherein the melting tool (18) comprises at least one current-carrying element (28) by which eddy currents can be generated in the material of the mold core.

Abstract: A building block for a ventilated wall includes an elongated center portion flanked by a pair of substantially parallel side walls oriented substantially perpendicularly to the center portion. The center portion has a first vertical wall and a second sloped wall, the second sloped wall extending between a relatively thicker bottom wall of the center portion and a relatively thinner top wall of the center portion. The first wall is co-planar with first edges of the side walls. A stacked arrangement of such blocks, where adjacent blocks are inverted and reversed, establishes front-to-back air passages that do not provide a sight line, and which prevent rain from passing through. A mold assembly for manufacturing the blocks is also disclosed.

Abstract: A wedge-lock system for injection molds, using a protrusion on one side of the mold and a mating opening and sets of wedges which act together upon mold closing to provide and maintain accurate centering of the core and cavity halves in reference to each other, to prevent core shifts and compensate for uneven thermal expansion of mold components.

Abstract: A mold releasing method for releasing a core member from a mold includes steps of: a) providing a supporting member and arranging the supporting member on the mold, the supporting member comprising a base and a number of sidewalls extending from the base to the mold, a through hole being defined in the substrate and co-axially aligned with the core member; b) providing a bolt, the bolt comprising a threaded rod extending through the through hole of the substrate and threadedly engaged with the core member; and c) rotating the bolt to move the core member to disengage from the mold.

Abstract: A tire mold is described that includes a plurality of tread molding segments having an inner surface for molding the tire tread. The mold further includes a plurality of sidewall plates having an inner surface for molding the tire sidewall. The tread mold segments together with the sidewalls cooperate to form a tire molding cavity. The sidewall plate further comprises a slot that extends from the outer surface of the tread segment to the inner mold surface, and has a pin extending from the outer surface of the tread segment. The pin is mounted to a rotatable body which can swivel. The rotatable body further comprises a guide pin which cooperates with a working member to rotate the body into a desired position in order to position the pin in the tire tread to be molded. The working member actuates the rotatable body into various positions.

Abstract: When a groove is provided for letting gas out of a die for molding a material constituting an optical element, a warped shape is sometimes transferred to the lens or other optical element molded from the material. When a through-hole is provided in a hollow body disposed on the outside of the external peripheral surface of the die, the strength of the body is severely reduced. In the present invention, a groove for letting out gas is provided in at least part of the internal peripheral surface of the body facing the die.

Abstract: In the assembly-completed state, the Lower Mold, the Outer Mold, the Upper Mold, and the “inner mold (the integral body of the Pin-holder and the Pin)” are stacked and fixed in this order from the bottom, and the Pin is coaxially inserted into the First Hole of the Outer Mold and the Second Hole of the Upper Mold. In the assembly-completed state, the molding space for molding the ceramic molded body is formed between the surface of the Pin and the First Hole, and the annular minute gap is formed between the surface of the Pin and the Second Hole. The ceramic slurry poured into the Slurry Reservoir Pres formed on the upper surface of the Upper Mold falls and flows into the molding space through the annular minute gap by virtue of the action of gravity or the like.

Abstract: A mold includes a plurality of inserts, a molding board, a base board, a plurality of fastening members, and a plurality of washers. The inserts each has a molding surface. The molding board includes a plurality of cavities for accommodating of the respective inserts. The base board for mounting the molding board thereto has a plurality of receiving holes. The fastening members are respectively received in the corresponding receiving holes for securing the corresponding inserts in the corresponding cavities of the molding board. The washers are sandwiched between the respective fastening members and an opposite ends of the inserts to the molding surfaces.

Abstract: A method for manufacturing moulded flexible plastic skins (9, 24, 27, 34) differing in their shape from each other, each skin being moulded against a mould surface (2) of a mould (1), comprises the steps:—providing a mould surface (2) matching the shape of the skin to be moulded by using a first mould surface provided by the mould itself or by altering the first mould surface by placing one or more mould inserts covering only a part of the first mould surface onto said mould surface and thereby providing an alternative second mould surface,—applying a plastic compound to be brought to shape by the mould surface (2) provided,—bringing to shape the plastic compound applied to the mould surface (2), and—demoulding the moulded skin (9) from the effective mould surface (2).

Abstract: An apparatus and method is provided for injection molding an ophthalmic lens mold section having an optical surface and a non-optical surface opposite the optical surface. The apparatus includes a non-optical tool assembly for forming the non-optical surface of the ophthalmic lens mold section. An optical tool assembly is in opposed relation to the non-optical tool assembly and together therewith forms a mold cavity for forming the ophthalmic lens mold section. In the preferred embodiment, the optical tool assembly includes a rotatably mounted core member and an optical insert removably secured the core member. The optical insert has an optical molding surface for forming an optical surface of the ophthalmic lens mold section opposite the non-optical surface thereof. A locking mechanism having, in a preferred embodiment, a locking pin selectively movable between a first position wherein the pin allows rotation of the core member and a second position wherein the pin prevents the core member from rotation.

Abstract: A molding apparatus includes a first mold half, a first mold core received in the first mold half, a second mold half opposite to the first mold half, a second mold core and a plurality of spacers. The second mold core includes a sleeve and a core insert. The sleeve is received in the second mold core. The sleeve includes a receiving hole defined therein, and a plurality of parallel grooves defined in an inner surface in the receiving hole. The grooves are angularly equidistantly spaced from each other. The core insert is received in the receiving hole of the sleeve. The plurality of spacers is configured for being selectively disposed in the corresponding grooves. Each of the spacers is configured for being sandwiched between the sleeve and the core insert.

Abstract: A syringe mold with a coolant circulation outward and homeward positioned close to the cavity space and a sufficient coolant circulating flow for cooling a core cylinder is provided. Slide cores (5, 5) are put in the position where the slide cores (5, 5) protrude from the circumference of the core cylinder (2) by moving the slide core operating jig (4) forward in the axial direction of the core cylinder (2) while cooling the core cylinder (2) by the coolant. Then, a two medical agent mixing type syringe having a communicating groove on the inner circumference for mixing two medical agents is injection-molded. A molding failure due to insufficient cooling of the core cylinder (2) can be prevented by positioning the coolant outward and homeward close to the cavity space and making the cross sectional area of the coolant outward and homeward enough large because the coolant outward and homeward is partitioned by the circumference of the jig container space in the core cylinder (2).

Abstract: A die for forming a lost wax ceramic core allows the formation of non-parallel separating spaces between adjacent portions of the core. The core will eventually form cooling channels in an airfoil. The die for forming the core includes a plurality of moving parts having rib extensions. At least some rib extensions are non-parallel to form the non-parallel spaces. The die includes two main die halves that come together to form several of the spaces. Inserts move with those die components and come together to form other spaces. At least one of the inserts contacts surfaces on one of the die halves, such that the non-parallel spaces are formed.

Abstract: A metal mold device for casting that is adapted to prevent a casting sleeve from falling and that keeps even spacing between an inner circumferential wall of the casting sleeve and an outer circumferential wall of a bore pin. Ball plungers are provided at regular intervals in a circumferential direction on an outer circumferential portion of the bore pin in the vicinity of a distal end of the bore pin and on an outer circumferential portion in the vicinity of a basal end thereof, respectively, with respect to the axial direction of the bore pin. Three distal ball plungers are provided on the outer circumferential portion in the vicinity of the distal end of the bore pin and three basal ball plungers are provided on the outer circumferential portion in the vicinity of the basal end thereof. The distal ball plungers are 60° out of phase with the basal ball plungers when viewed in the axial direction.

Abstract: A mold includes a controller and core actuators that may independently drive a plurality of mold cores positioned with the mold. Sensors may be included whereby the mold cores are positioned in the mold core responsive to the sensor feedback. The core actuators may be servomotors and may further include motor controllers, one for each servomotor, for use in actuating the mold cores.

Abstract: Contact lens molds and systems and methods for producing contact lens molds are described. The contact lens mold sections include two optical quality surfaces, a flange circumscribing at least a portion of the two optical quality surfaces, and an elongate member extending from the flange. Two mold sections can contact one another to form a mold assembly having a contact lens shaped cavity. The mold sections are structured to form a contact lens having an edge that does not require further physical modification before placement on an eye. Systems and methods are described which direct a molten polymeric material into cavities corresponding to the mold sections.

Abstract: A device for extracting the mold core and a mold assembly using the same are disclosed. The extracting device comprises a first gear, a plurality of first racks and a plurality of transmission assemblies, wherein the transmission assemblies and the corresponding first racks are spaced apart along the periphery of the first gear such that each transmission assembly is located between the first gear and first racks. The rotating motion of the first gear is transformed into a reciprocating motion of each of the first racks from a first position to a second position.

Abstract: A mould for moulding braking bands with ventilation ducts with the use of composite material and, in particular, of C/SiC ceramic material, comprises two half-moulds with respective impression surfaces which face one another and lie perpendicular to an axis of symmetry and which, together with outer and inner cylindrical walls, define a moulding cavity in the shape of the braking band to be moulded. The mould also has pin elements which have the shape of the ventilation ducts and which can be transferred by secondary actuating means from a rest position to a working position and vice versa, the pin elements being outside the moulding cavity in the rest position and the pin elements being inserted in the moulding cavity in the working position.

Abstract: Methods and apparatus are provided for making a rotor blade spar from composite material wherein a multi-component mandrel is used to form the composite spar. The mandrel is made using a number of components, which are assembled to provide a structure that is sufficiently strong to maintain the spar shape during pre-cure lay up, compaction and curing of the composite material. The multiple components used to form the mandrel can be separated from each other and easily removed from the spar either before or after curing of the composite material. The mandrel components can then be re-assembled and re-used to form additional composite spars.

Abstract: The invention relates to scaffolds for artificial heart valves and vascular structures comprising a biocompatible block copolymer. A method and means for producing said scaffold are also provided.

Abstract: Apparatus for double-sided imprint lithography of an apertured substrate comprises a pair of correspondingly apertured molds, a support for an assembly of the substrate and molds, and an alignment mechanism with radially movable elements for aligning the apertures of the molds and the substrate. The movable elements can be at least partially disposed in a spindle and can be removed radially outward by a conically tapered drive rod. Opposing surfaces of the substrate can then be imprinted in registration at the same time, preferably by fluid pressure imprint lithography.

Abstract: An apparatus and method for tensioning material (12) over a mold (14), such as a cure tool, comprises a tensioning fork (10) consisting of two substantially parallel tapered legs (18,20) between which material (12) is disposed. A tensioning fork (10) is positioned at a first side edge (42) and proximate a first end edge (38) of the material (12). A first leg (18) of the tensioning fork (10) is disposed under the material (12), and a second leg (20) of the tensioning fork (10) is disposed over the material (12). When force is applied to the second leg (20), it pivots about the first leg (18) along the length of the legs, remaining parallel to the first leg (18), thereby pressing a portion of the material (12) against the mold (14).

Abstract: A method and apparatus for casting concrete elements with varying, determined length, equipped with one or with a plurality of longitudinal hollow cores, by means of a slipforming apparatus. The apparatus is movable with respect to the bed (2), said apparatus comprising forming members (10) for forming hollow cores. The mass is fed in the first step to the portion of the slab below the hollow cores, and in the second step the hollow-core forming members being brought onto the said portion of the slab and mass is being fed between the forming members and onto them. The forming member (10) for forming a hollow core comprises an attachable extension part (22). The height of a hollow core is changed by changing the extension part of the hollow core forming member.

Abstract: A two-stage cam pin for use in a molding or casting system comprises a head, a first shank portion and a second shank portion. The head secures with a first die half and extends through a transverse axis of the cam pin. The first shank portion extends from the head at a first oblique angle with respect to the transverse axis. The second shank portion extends from the first shank portion to a tip of the cam pin at a second oblique angle with respect to the transverse axis. The first shank portion and the second shank portion each displace the tip laterally from the head to define a stroke.

Abstract: A slide having a fixing mechanism of a slide insert includes a slide body, a slide insert and a slide core. The slide body has a connecting portion and an inserting portion. The connecting portion defines a locating hole which stretches through the top surface to bottom surface of the connection portion. The inserting portion defines an inserting hole passing through the front and back surface of the inserting portion. A core hole is defined at the junction of the connecting portion and the inserting portion. The slide insert is located in the inserting hole. One end of the slide insert protrudes around to form a preventing part. The slide core is inserted in the core hole to fix the preventing part between the back surface of the inserting portion and the slide core. Then the slide insert is fixed in the slide.

Abstract: An exemplary molding apparatus includes a first and a second mold core, a mold core receiving member, at least three positioning members and pushing members. The first and second mold core respectively have a first and a second molding portion, the first and second molding portion are configured for cooperatively defining a mold cavity. The mold core receiving member defines a through hole for receiving the second molding portion, at least three spaced receptacles in an inner wall thereof, and at least three spaced receiving holes in communication with the respective at least three receptacles. The at least three positioning members are received in the at least three receptacles. The at least three pushing members are movably received lengthwise in the at least three receiving holes, and being configured for urging the at least three positioning members to move toward the second molding portion thus hold the second molding portion.

Abstract: An optical element being high in productivity and capable of ensuring a large bonding area, and a production method of the optical element. At mold opening when a top part (120) provided with a round portion (121) moves upward, a preform is placed in an inner space the interior of which is formed by a rectangular sleeve (110) and the round portion (131) of a bottom part (130). At mold clamping when the top part (120) moves downward, the preform is pressurized. That is, a convex lens portion is transferred by the concave curved surface (122) and the edge surface (123) of the round portion (121) and the concave curved surface (132) and the edge surface (133) of the round portion (131). The four side surfaces of an optical element (1) are transferred by the inner wall surface (110a) of the sleeve (110).

Abstract: A mold unit is provided for molding an object part to be molded which is arranged on an object. The mold unit includes: a fixed core, having a dividing surface thereon; a molding die which is incorporated in the fixed core to mold the object part to be molded; and an auxiliary die interposed between the molding die and the dividing surface of the fixed core to ensure a positional accuracy of the object part to be molded with respect to the object by modifying the auxiliary die.

Abstract: An injection molding manufacturing apparatus and method that facilitates the formation of a blind hole in a two-component assembly in which a first component is molded in-situ in a second component. A first cylindrically-shaped component having a transverse socket with a blind hole is injected molding and then transferred into and molded in-situ within the second component in such a way that the blind hole is blocked-off by a second central core pin during molding of the second component. In this manner, the two-component in-situ assembly includes a blind hole formed in a socket.

Abstract: A method and apparatus for forming a member, such as a column. The invention comprises inner and outer molds that are spaced apart forming a cavity for receiving a viscous material for making the member. A core is inserted within the inner area of inner mold when the viscous material is initially disposed within the mold. Once the material attains a gelled state, an extraction member is inserted within the inner area. A vacuum is applied to the inner area that causes the flexible inner mold to separate from the material and conform to the extraction member allowing for removal.

Abstract: A two-shot injection molding assembly is provided where the tooling that creates the mold for the first material can be retracted and the tooling that creates the mold for the second material can be inserted. The first material tool blocks the mold area that is intended for the second material to be injected. After the first material is injected into the mold, the first material tool can be retracted and replaced with the second material tool. The second material tool creates a side for the mold that is used to form the second material injected into the mold, and a spring based wedge forms the other side of the mold. By having the first material tool retracted and replaced with the second material tool, the core plate does not have to be rotated.