MXPA03009871A

MXPA03009871A - Staged, sequentially separated injection mold.

Info

Publication number: MXPA03009871A
Application number: MXPA03009871A
Authority: MX
Inventors: J Moorhead Andrew
Original assignee: Accurate Mold Usa Ltd
Priority date: 2001-05-16
Filing date: 2002-05-15
Publication date: 2005-02-17
Also published as: WO2002092319A1; EP1387752A4; BR0209656A; JP2004525806A; EP1387752A1; CA2447430A1; CA2447430C; PL368460A1

Abstract

A stage, sequentially separated injection mold (40) for forming a container spout (14) having a peripheral flange (18), a generally cylindrical sidewal (20), a removable panel (30) fixed within the sidewall, and a pull ring (32) connected to the removable panel. The mold includes a base (42), and a first element (44) coupled to the base including a gate (45). A core plate (60) movable with respect ot the base, and a core element (62) confronting the first mold element. A sleeve (76) surrounds the core element having a channel (84) to define the pull ring. The sleeve moves with respect to the core element to permit release of a molded pull ring. A stripper ring (96) surrounds the sleeve with an edge (98) positioned contiguous to the sleeve outward facing surface, the stripper ring being movable along the sleeve.

Description

MOLD BY INJECTION SEQUENCED SEPARATELY BY STAGES BACKGROUND OF THE INVENTION The present invention is generally directed to sequentially separate and stepped injection molds and particularly to molds for forming container conduits having an integral panel sealing the conduit and a traction ring to facilitate the opening of the conduit by removal of the conduit. panel.

Certain types of containers, such as cardboard boxes and those with a boom-shaped top, employ separately molded plastic conduits with threaded closures. Said cardboard boxes will be recognized as those containers in which the quarts, liters and half gallons of milk or juice are packed. The ducts are injection molded to include a removable integral panel that seals the duct until the time of initial purchase by the consumer. Examples of said injection molded conduit are found in U.S. Patent Nos. 5,133,486; 5,735,426; 5,915,574; 5,957,312 and 6,179, 47. The integral panel is observed as a feature resistant to decomposition of the closure system that is desired by the public to ensure the safety of the product inside the container. The integral panel is attached to the conduit by a brittle line and an integral traction ring is provided to facilitate the opening of the conduit through the removal of the integral panel by breaking the brittle line surrounding the panel. The conduit includes a threaded outer surface and a screwed closure that allows to re-seal the container after partial consumption of the contents.

To mold said ducts in an injection molding apparatus, a steel mold or other metal mold of the article to be molded is first manufactured. The mold contains a mold cavity configured to reflect the part to be molded. The mold opens periodically or separately, so that the molded part can be removed from the mold cavity. A plastic material, such as polypropylene, polystyrene or the like is injected, such as by an oscillating screw arrangement into the mold. After the material has been allowed to cool, the mold opens and the molded part is ejected from the mold. The mold can subsequently be closed and used to form a subsequent part.

The presence of the integral panel and the pull ring inside the duct at the time it is initially molded represents a special problem. The ejection of the part of the mold must occur in said sequence as to preserve the fragile line surrounding the removable panel and the traction ring. This can be accomplished by having the mold including a center member such as an inner mandrel or sleeve around which the plastic material is molded to conform to the shape of the desired mold. The mandrel portion must, as part of the mold opening sequence, be removed from the molded part after the part is formed. In some known injection molding apparatus, which removes the mold member as a mandrel, it is typically made by pulling or removing the molded part of the mandrel as part of the mold opening sequence. This, however, can cause damage to the molded parts, particularly if the parts include threads or pull rings formed therein.

A mold designed for this purpose, described in U.S. Patent Nos. 5,736,172 and 5,820,807, includes a plurality of separable, concentric telescopic mold elements and an opening therein defined by a base portion and the mold elements for injecting a material of mold in the apparatus. The elements are configured in such a way that they can be separated or removed from the mold, the more external internal element. It is intended that this structure provide sufficient clearance for the newly molded part to flex internally as the mold elements are further removed minimizing the possibility of damage to the molded part. Each of the mold elements includes a face of the mold, which in part defines a mold cavity and the portions of the eyebrow opposite their respective mold faces. The mold also includes a movable ball holder of the type that facilitates the opening of the mold to remove the conduit from the molded container. The molding apparatus also includes two intermediate mold elements positioned between the internal and external mold elements. Each of the intermediate molding elements includes openings through their respective body portions adapted to receive a fixing ball support cam member therein.

This combination of separable telescopic molding elements and the movable attachment ball support members is also complex and less reliable than would be desirable in a manufacturing situation. In addition, there is still a need for an injection molding apparatus that allows a stepwise sequential separation of the mold to effect the removal of portions of the mold, which separation process eliminates potential damage to the molded parts during the process of opening the mold. mold.

SUMMARY OF THE INVENTION Accordingly, a sequentially stepped injection mold of the present invention includes a base, a first mold member coupled to the base that includes a gate through which the plastic material can be injected and a surface at which it can be injected. less partially defines a mold cavity to receive the plastic material. A center plate movable in a first direction with respect to the base of the mold has a center member attached to the plate including an end surface facing the first mold member partially defining the mold cavity. A sleeve encloses the center member having an end surface facing the first mold element, an outer cladding surface and an inner cladding surface facing the center element. The inner lining surface includes a channel coupled to the end surface of the sleeve and a circumferential groove. The end surface of the sleeve, the external coating surface and the channel that also defines the mold cavity. After injection of the plastic into the mold cavity, the center member, the sleeve and the spacer ring initially move as a unit in a first direction away from the first mold member. The mold member is subsequently retracted into the sleeve by a distance sufficient to expose the channel coupled to the end surface of the sleeve to allow release of the material from the channel.

A set of threaded slots confronts the outer coating surface of the sleeve and the first mold element further defines the mold cavity. The set of threaded slots is generally movable orthogonally to the direction of relative movement of the center and the plates of the cavity. An inclined outer surface is included in each of the threaded slots and the wedge elements are fixed to the mold base. Each wedge element acts between the adjacent outer surfaces inclined in the adjacent threaded grooves to force the threaded grooves towards the outer facing surfaces of the confronting sleeve in the movement of the center plate towards the base of the mold. After injection of the plastic into the mold cavity, the set of threaded grooves moves out of the outer surface of the side wall simultaneously with the movement of the center member, the sleeve and the spacer ring as a unit outside the first element. printed.

The detentions are attached to the separator plate to limit the movement of the threaded slots away from the outer facing surfaces of the confronting sleeve.

A spacer ring surrounding the sleeve includes an edge positioned adjacent the outer coating surface of the sleeve. The edge of the spacer ring includes an arcuate portion immediately adjacent the threaded slots partially defining the mold cavity. The separating ring moves along the sleeve facilitating the removal of material from the outer coating surface of the sleeve. A means of coupling the separator plate that couples the separator plate to the center plate to limit the relative movement between the separator plate and the center plate. A sleeve support plate is fixed to the sleeve and the coupling means couples the sleeve support plate to the center plate for delayed movement with respect to the center plate. After the sleeve support plate has moved a sufficient distance to remove the sleeve from its side wall of the container conduit to remove the traction ring from the channel on the inner surface of the sleeve, the sleeve support plate is advanced relative to the separator plate to cause the end surface of the sleeve to be in contact with the pull ring and therefore separates the conduit from the separator ring container.

The structure of a mold of the present invention allows a less complex play of relative movements between the various elements of the mold to allow the release of the molded article and the return of the mold to an appropriate position to receive the injected plastics. Less complex movements allow faster and more reliable operation of the mold compared with existing molds intended to create similar molded articles. Some simplicity comes to have certain elements of the mold performing two functions. For example, the set of threaded slots facing the outer coating surface of the sleeve to define the threaded formation on the outer surface of the side wall also cooperates with the first mold member to define the eyebrow. Also, the spacer ring surrounding the sleeve to facilitate removal of the portion of the molded side wall of the conduit with an arcuate portion immediately adjacent the threaded grooves at least partially defining the edge of the side wall.

These and other advantages and features of the present invention will become apparent to those skilled in the art from a consideration of the following description of a preferred embodiment of the present invention which refers to the accompanying figures illustrating the best way of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a conduit of the exemplary container that can be formed using the injection mold sequentially separated in stages in accordance with the principles of the present invention, the conduit being illustrated attached to an upper container of type gable.

Figure 2 is a perspective view of a duct that can be formed in a sequentially stepped injection mold of the present invention.

Figure 3 is a cross-sectional view of the sequentially stepped injection molding apparatus of the present invention for making the duct shown in Figures 1 and 2 with the mold shown in the fully closed position.

Figure 4 is a cross-sectional view similar to that of Figure 3 with the mold moved to an open position with the threaded recesses retracted out of the molded passage.

Figure 5 is a cross-sectional view similar to that of Figure 4 with the center plate of the mold moved even further open so that the center moves within the sleeve to a position that will allow the pull ring to be removed.

Figure 6 is a cross-sectional view similar to that of Figure 5 with the support plate of the mold sleeve moved to a further open position thereby causing the sleeve to be removed from the molded article which is held by the spacer ring.

Figure 7 is a cross-sectional view closely identical to that of Figure 5 with the support plate of the mold sleeve which has been returned to its first position further causing the sleeve to move back into the spacer ring to force the Molded duct comes out of contact with the separator ring.

Figure 8 is a cross-sectional view closely identical to that of Figure 4 with the center plate being returned to its first position, further completing the ejection of the molded article from the mold in preparation for closing the mold to the closed position shown in Figure 3 of new to accept the injected plastic.

DESCRIPTION OF THE PREFERRED MODALITY Figure 1 shows a container 10 that has been in diffuse use having a boom-like upper part 12 including a duct 14 capped with a closure 16 to re-seal the container 10 after the initial opening. The conduit 14 is shown in more detail in Figure 2 having a peripheral flange 18. A generally cylindrical side wall 20 extends perpendicular from an inner perimeter 22 of the flange 18 for an edge 24. A closure coupling formation such as a thread 26 is formed on the outer surface 28 of the side wall 20, which interacts with a corresponding internal thread (not shown) in the closure 16. It will be appreciated that the closure engagement formation 26 could be a spring ring close to the edge 24 for interaction with a corresponding riveted lid more than the closure 16 with an internal thread. A removable panel 30 is formed integrally within the side wall 20 forming a reflector indicating the seal that can be visually inspected by a consumer of the contents of the container before starting its use. A pull ring 32 is connected to the removable panel 30 by a portion of rod 34 to allow easy removal of the panel 30 by the consumer. By simply pulling the pull ring 32, the consumer causes a break to develop along a generally circular line of brittleness 36 at the periphery of the removable panel 30. It will be recognized by those skilled in the art that various elements of the duct 14 are not they easily form using an injection mold.

A mold 40, constructed in accordance with the present invention for the purpose of forming the conduit 14, is shown in Figures 3-8. While the figures only illustrate a single set of mold elements capable of forming a single duct at a single moment, in actual practice, the mold 40 may comprise many sets of mold elements so that as much as 96 or even more, the conduits 14 can be formed simultaneously. Simply illustrating these mold elements necessary to form a single conduit in a single time is for the purpose of clarity and should not be considered as limiting in any way.

The mold 40 includes a mold base 42. A first mold member 44 engages the base 42 and includes a gate 45 through which the plastic material can be injected. The first mold member 44 also includes a surface 46 partially defining a mold cavity 47 for receiving the plastic material, the mold cavity 47 having the shape of the conduit 14. The surface 46 of the first mold member 44 is configured to form the observed surface of the duct 14 of that shown in Figure 2. As shown in Figure 4, the surface 46 of the first mold member 44 includes a first portion 48 defining an internal surface of the cylindrical side wall 20 below the removable panel 30., a third portion 52 defining the bottom surface of the removable panel 30 and a rim 54 at the junction of the second and third portions defining the circular line of the fragility 36. A pair of cam selection edges 56 are fixed to the mold base 42 on each side of the first mold member 44 to project generally perpendicularly away from the base of the mold 42. Each edge of selection of 566 includes a pair of inclined surfaces 58, the function of which will become apparent from the subsequent description.

The mold 40 also includes a first center plate 60 which moves reciprocally in the Y direction with respect to the base of the mold 42. A center member 62 is fixed to the center plate 60 to project toward the first mold member 44 The center element 62 includes an end surface 64 which confronts a central portion of the third portion 52 of the surface 46 of the first mold member 44 and defines an inner portion of the upper surface of the removable panel 30. The center element 62 also includes a cylindrical outer surface 66. A second center plate 68 is fixed to the first center plate 60 and includes the lines 70 for the handling of the cooling fluids, such as warm water, supplied to the interior of the center element. 62 The mold 40 also includes a backing plate 72 separated from the first center plate 60 by a retainer plate 74. The center retention plate 74 is fixed to the backing plate of the sleeve 72. The sleeve 76 It is fixed to the support plate of the sleeve 72 so as to surround the center element 62. As shown in Figure 4, the sleeve 76 has an end surface 78 that confronts that portion of the surface 46 of the first element of the body. mold 44 for defining the perimeter portion of the removable panel 30. The sleeve 76 also has an outer facing surface 80 that includes a front portion defining the inner surface of the side wall 20 of the conduit 14. An inner liner surface 82 of the sleeve 76 which confronts the center member 62 and includes a channel 84 coupled to the end surface of the sleeve 78 defining the traction ring 32 and the rod portion 34 of the conduit 14. The sleeve 76 is movable. with respect to the element of the center 62 to allow the release of the material from the channel 84 as explained below in connection with the stages of the molding process illustrated by Figures 5 and 6, however, the sleeve 76 is limited in its movement . A fastener 86 extends through center retainer plate 74, the first center plate 60 and the second center plate 68 and is fixed to the sleeve support plate 72. The second center plate 68 includes a protrusion 88 which confronts a stop 90 in the fastener 86 which limits movement relative between the support plate of the sleeve 72 and the second center plate 86. The fastener 86 is surrounded by a pulley bearing 92 which limits the stroke of the plates 60, 68, 72 and 74 during their relative movement.

The mold 40 also includes a spacer plate 94. A spacer ring 96 is attached to the spacer plate 94 so as to surround the sleeve 76. The spacer ring 96 includes an edge 98 positioned adjacent the outer skin surface of the sleeve 80. As shown in Figure 6, the edge 98 includes a portion 100 defining the edge 24 of the conduit 14. The separator plate 94 and the separator ring 96 are movable relative to the sleeve 76 to facilitate removal of the material from the surface of the surface. outer coating of the sleeve 80 as explained below and connection with the stages of the molding process illustrated by Figures 5 to 7, however, the separating ring 96 is limited in its movement. A fastener 99 extends through the first center plate 60, the center retention plate 74 and the sleeve support plate 72 and is fixed to the spacer plate 94. The first center plate 60 includes a projection 101. which confronts a stop 102 in the fastener 99 which limits the relative movement between the separator plate 94 and the first center plate 60. The fastener 99 is surrounded by a projection 104 which limits the stroke of the plates 60, 72, 74 and 94 during its relative movement.

The wear plate 106 is fixed to a front surface 108 of the separator plate 94 by the fastener 110. The threaded grooves 112 move along the surface of the wear plate 106 for lateral movement in the X direction. threaded grooves 112 include a surface defining the threading 114 that confronts the outer skin surface of the sleeve 80 and the second portion 50 of the first mold member 44 to define the threaded outer surface 20 of the conduit 14. The threaded grooves 112 move by means of a bypass means or by means of a cam and a cam roller combination (not shown) between the position shown in Figure 3 and the position shown in Figures 4-8. The threaded grooves 112 include an inclined outer surface 118 intended to engage the inclined surfaces 58 of the cam selecting edges 56 to force the threaded grooves 112 toward the outer facing surfaces of the confronting sleeve 80 in the movement of the first center plate 60 towards the base of the mold 42. The head 116 of the fastener 1 0 is dimensioned to act as the stop to limit the lateral movement of the threaded grooves 112.

In operation, a conduit of the container 14 as shown in Figures 1 and 2 is formed in the mold 40 by injection of a molten plastic through the gate 45 while the mold is placed in a closed position as shown in FIG. Figure 3. After an initial period of time sufficient for the molten plastic to cool to a stable state, the center member 62, the sleeve 76 and the separator ring move as a unit to an open position as shown in Figure 4 having the effect of removing the molded duct 14 from contact with the surface 46 of the first mold member 40. Simultaneously with this movement, the threaded grooves 112 are caused by moving externally away from the outer surface away from the outer surface 28 of the side wall 20 to expose the newly formed threads 26.

Then, the first and second center plates 60 and 68 move out of the sleeve support plate 72 and the center retention plate 74 by a distance limited by the detection junction 90 and the projection 88, typically about 1.25 cm, as shown in Figure 5. This causes the center element 62 to be withdrawn into the sleeve 76 by a distance sufficient to expose the channel 84 coupled to the end surface of the sleeve 78 that contains the pull ring 32 and the portion of the rod 34 of the duct 14. The backward movement of the first and second center plates 60 and 68 continues until the projection 101 on the first center plate 60 abuts the stop 102 surrounding the fastener 99 as shown in Figure 6. This causes the sleeve support bail 72 to be separated from the separator plate 94 by a distance typically about 1.9 cm, sufficient for removal of the outer coating surface of the sleeve 80 within the side wall 20 of the conduit 14 so that the conduit is now held by the edge portion 100 of the spacer ring 96 defining the edge 24 of the conduit 14 .

Now, the sleeve support plate 72 moves forward until it abuts the separator plate 94 as shown in Figure 7. This causes the end surface of the sleeve 78 to contact the pull ring 32 and push the free molded conduit 14 of spacer ring 96, thereby providing molded conduit 14 with some movement so as to be ejected from mold 40. An optional air channel may be included to provide a burst of air between the molded conduit and one or more separator rings 96, the center member 62 and the sleeve 76 to assist in the expulsion of the conduit 14. After this the center plates 60 and 68 move to limit the sleeve supporting plate 72 as shown in the Figure 8. The center plates 60 and 68, the support plate 72 and the spacer plate 94 are subsequently moved as a unit to return to the closed position shown in Figure 3. This causes the inclined surfaces 58 in the cam selecting bodes 56 for forcing the threaded slots towards the outer facing surfaces 80 of the sleeve 76 and the second portion 50 of the surface 46 of the first mold element 44, thereby defining the closed cavity 47 located to receive the next shot of molten plastic.

The structure of the mold 40 is illustrative of the present invention which allows a simple play of relative movements between the various elements of the mold to allow the release of the molded article 14 and subsequently a return of the mold to an appropriate position to receive the next shot of plastics injected. The simple mold 40 movements allow faster and more reliable mold operation as compared to existing molds intended to create similar molded articles. Various modifications of the invention in addition to those shown and described herein will become apparent to those skilled in the art from the foregoing description and the accompanying drawings. Said modifications are intended to fall within the scope of the following claims.

Claims

13 CLAIMS

1. A sequentially stepped injection mold comprising: a mold base and a first mold member coupled to the base including a gate through which the plastic material can be injected and a surface at least partially defining a mold cavity for receive the plastic material; a center plate movable in a first direction with respect to the base of the mold and a center member attached to the center plate, the center member including an end surface facing the first mold member and at least partially defining the cavity of the mold; a sleeve encircling the center member having an end surface facing the first mold element, an outer cladding surface and an inner cladding surface facing the center element, the end surface of the sleeve and the external cladding surface further defining the mold cavity and a channel in the inner lining surface of the sleeve coupled to the end surface of the sleeve that further defines the mold cavity, the sleeve being movable in said first Y direction with respect to the center element to allow the release of the channel material and a set of threaded grooves that confront the outer coating surface of the sleeve and the first mold element to further define the mold cavity, the set of threaded grooves being movable in a general direction X orthogonal to the first Y direction.

2. The injection mold according to claim 1, further comprising the spacer ring surrounding the sleeve and including an edge positioned adjacent to the outer coating surface of the sleeve, the spacer ring being movable along the sleeve to facilitate removal of material from the external coating surface of the sleeve.

3. The injection mold according to claim 2, further comprising an inclined outer surface in each of the threaded slots and the wedge elements fixed to the mold base, each wedge element having a pair of similarly shaped surfaces. inclined projecting between the adjacent outer surfaces inclined in the grooves of adjacent grooves to force the threaded grooves to face the outer facing surfaces of the sleeves in movement from the center plate towards the base of the mold.

4. The injection mold according to claim 2 or 3, further comprises a spacer plate attached to the spacer ring and the support means of the threaded groove fixed to the threaded grooves and coupled to the spacer plate for movement relative to the spacer plate in said second direction X and with the separating plate in said first direction Y.

5. The injection mold according to claim 4 further comprises the coupling means of the separator plate for coupling the separator plate of the center plate to limit the relative movement between the separator plate and the center plate.

6. The injection mold according to claim 4 or 5, further comprises detentions fixed to the separator plate to limit the movement of the threaded slots away from the outer coating surfaces of the confronting sleeve.

7. The injection mold of any of claims 1 to 6 further comprises a sleeve support plate attached to the sleeve and the coupling means for coupling the sleeve support plate to the center plate to delay movement with respect to the sleeve. to the central plate.

8. The injection mold of any one of claims 1 to 7, wherein said channel on the inner lining surface of the sleeve further comprises a circumferential groove at a fixed distance from said end surface of the sleeve and a groove that is driven to the circumferential groove for the end surface of the sleeve. fifteen

9. The injection mold according to claim 8, wherein the smallest dimension of the groove leading to the circumferential groove of the end surface of the sleeve is larger than the smallest dimension of the mold cavity measured between the end surface of the sleeve and the first element of the mold.

0. The injection mold according to any of claims 2-9, wherein said edge of the spacer ring is positioned adjacent to the sleeve and further comprises an arcuate portion partially defining the mold cavity.

11. The injection mold according to any of claims 1-10, wherein the surface of the first mold element defining the mold cavity defines at least in part a peripheral eyebrow and a removable panel of a container duct.

12. The injection mold according to claim 1, wherein the surface of the first mold element defining the mold cavity defines at least in part an internal surface of a cylindrical side wall of the container conduit.

13. The injection mold according to any of claims 1-12, wherein the end surface of the center member defines at least in part a removable panel of a container conduit.

14. The injection mold according to any of claims 1-13, wherein the end surface of the surrounding sleeve of the center member defines at least in part a removable panel of a container conduit.

15. The injection mold according to claim 14, wherein the end surface of the sleeve defines a line of brittleness surrounding the removable panel of the container conduit.

16. The injection mold according to any of claims 1-15, wherein the outer coating surface of the sleeve defines at least in part a cylindrical side wall of a container conduit.

17. The injection mold according to any of claims 1-16, wherein the channel on the inner lining surface of the sleeve is connected to a peripheral groove defining a pull ring attached to a removable panel of a container conduit .

18. The injection mold according to any of claims 1-17, wherein a surface adjacent the edge of the spacer ring adjacent the sleeve defines an edge of a container conduit.

19. The injection mold according to any of claims 1-18, further comprises a channel in one of the center, the spacer ring or the sleeve to provide a stream of air against an inner surface of the molded container conduit to assist in the expulsion of the conduit from the mold container.

20. A method for forming a container conduit having a peripheral eyebrow, a generally cylindrical side wall extending from an inner perimeter of the eyebrow to an edge, a closing engagement formation on an exterior surface of the side wall, a fixed removable panel inside the side wall and a pull ring connected to the removable panel, the method comprising the steps of: providing a first molded element including a gate through which the plastic material can be injected and a surface at least partially defining the peripheral eyebrow and the removable panel, providing a center member that includes an end surface that confronts the first mold member to partially define the removable panel, providing a sleeve that surrounds the center member having an end surface by confronting the first mold member to partially define the removable panel, an exterior cladding surface at least partially defining the side wall and an internal cladding surface confronting the element in the center, the inner lining surface including a channel coupled to the outer surface of the sleeve at least partially defining the pull ring, providing a spacer ring surrounding the sleeve having an edge positioned adjacent the outer liner surface of the sleeve and arched portion immediately adjacent to the sleeve at least partially defining the edge of the side wall, moving the center element, the sleeve and the pull ring as a unit in a first direction and outside the first mold element, retract the element from center inside the sleeve by a sufficient distance to expose the channel coupled to the end surface of the sleeve at least partially defining the pull ring, remove the sleeve relative to the pull ring by a distance sufficient to remove the sleeve inside the sleeve. side wall of the container conduit and to remove the traction ring from the channel in the inner surface of the sleeve and advancing the sleeve relative to the pull ring sufficient to cause the end surface of the sleeve to be in contact with the pull ring and thereby separate the conduit from the separator ring container.

21. The method according to claim 20, further comprising the steps of: providing a set of threaded slots that face the outer coating surface of the sleeve and the first mold member to further define the eyebrow and the closing coupling formation on the outer surface of the side wall and the mold cavity and 18 allowing the set of the threaded slots to move in a second direction X generally orthogonal to the first direction Y outside the outer surface of the side wall simultaneously with the movement of the center member, the sleeve and the spacer ring as a unit in a first direction Y outside the first mold element.

22. The method according to claim 20 or 21 further comprising the steps of providing an outer facing surface in the first mold element defining at least in part an internal surface of the cylindrical side wall of the container conduit and ordering by the of the internal surface of the cylindrical side wall of the container conduit defined by the external coating surface in the first mold element to be removed from the first mold element simultaneously with the movement of the center member, the sleeve and the separator ring as a unit in a first direction and outside the first element of the mold.

23. The method according to any of claims 20 to 22, further comprising the step of providing an air stream against an inner surface of the molded container conduit to assist in ejecting the conduit from the mold container.