EP1090844B1

EP1090844B1 - Pouring spout array and process for forming same

Info

Publication number: EP1090844B1
Application number: EP00125515A
Authority: EP
Inventors: Elmar Mock; Yasuyuki Moriyama
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 1995-07-21
Filing date: 1996-07-19
Publication date: 2004-03-17
Anticipated expiration: 2016-07-19
Also published as: JP3493564B2; CN1096389C; DE69624145T2; CN1135189C; TW346439B; KR100425807B1; AU6678596A; AU709787B2; EP0885143A1; CN1343608A; KR19990035806A; EP0885143B1; EP1090844A1; DE69631915T2; WO1997003884A1; CA2226764A1; DE69631915D1; EP0885143A4; DE69624145D1; JPH0929555A

Description

The present invention relates to a parts array and a process for forming a parts array. More specifically, the present invention pertains to an array of resin molded parts such a pouring attachments and a process for forming such an array.
Liquid holding containers that are made of paper, plastic or the like are typically provided with a pouring attachment or pouring spout through which the liquid contents can be dispensed from the container. These pouring attachments are oftentimes molded from plastic material and subsequently attached to the container. Once attached, the pouring attachment can then be opened to pour the contents from the container.
An automatic attachment device is utilized to automatically attach the molded resin pouring attachment to the container. These automatic attachment devices are designed to continuously advance the containers along a conveying path with the pouring attachments being secured or attached one by one to the continuously moving containers.
A parts supplying apparatus is typically used to feed the pouring attachments to the automatic attachment device. The parts supplying apparatus is designed to align and continuously feed the pouring attachments one by one to the automatic attachment device. Conventional parts supplying apparatus are mainly of the vibrating type in which the parts such as the pouring attachments are aligned and fed one by one.
Vibrating parts feeders or supplying apparatus include a rail arranged in a spiral shape at a fixed sloping angle. Vibration is applied to the rail while the parts are supplied at one time to the center portion of the rail. The vibration causes the parts to vibrate and thus align in a row and gradually move down the sloping rail.
However, with the vibrating parts feeder described above, problems exist in that a substantially long rail must be used in order for the parts to align in a single row. Additionally, due to the complexity of the shape of the rail and the structure of the overall apparatus, it is difficult, if not impossible, to reduce the size of the apparatus and the costs are prohibitive.
Furthermore, in the case of containers for holding liquids contents for drinking, the pouring attachment to be attached to the container must be in a hygienic or sterile state. However, when utilizing a vibrating parts feeder such as that described above for feeding the pouring attachments for subsequent attachment to the container, it is possible for foreign objects to cling to the pouring attachments as the pouring attachments gradually move down the rail. These foreign objects on the pouring attachments can adversely affect the sterility of the containers when the pouring attachments fed by the vibrating parts feeder are subsequently attached to the containers.
In addition to the problems identified above, vibrating parts feeders of the type described above suffer from the disadvantage that although the feeders can align the parts to some extent, situations arise where the vibratory action is not entirely effective to produce a well formed row of parts. Also, problems have arisen in the context of using the feeders to feed parts having different shapes. In this regard, portions of the vibratory parts feeder may not be well suited to the particular shape of the parts being fed and so difficulties arise in properly aligning the parts in a row, Thus, it has been found necessary in some instances to perform tests and effect design alterations in the feeder to address such problems.
The German document DE 28 48 833 A discloses a device for attaching a valve unit at the wall of a packing box. In a first step a cutting tool produces an opening in the wall of the packing box defining the location at which a valve has to be fixed. The platelike valves provide each an adhesive surface being in contact with a carrier band. The carrier band is unwinded from a supply unit from which the carrier band being fed to the fixing position at the opening over a guiding means providing a separation edge at which the valve being separated from the carrier band. Finally a stamp unit presses the valve with its adhesive surface against the outer wall of the packing box overlapping the opening 4.
EP 0 207 610 shows a taped bag chain with cassette. A self adhesive tape is used like a conveyor belt for transportation of imbricated bags.
It is an object of the present invention to provide a parts array and a process for forming same according to which the parts are easily fixed to the carrier and may also be easily removed from the carrier, wherein the carrier should be of simple and cheap construction.
This object is solved by a pouring spout array according to claims 1 and 2 or a process for forming a pouring spout array according to claims 5 or 6, respectively.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

Further details and features associated with the present invention will become more apparent from the detailed description set forth below considered in conjunction with the accompanying drawing figures in which like elements are designated by like reference numerals and wherein:
FIG. 1 is a top perspective view of a parts supplying apparatus and a parts array,fed by the apparatus (in accordance with the present invention),
FIG. 2 is a top perspective view of a portion of the parts supplying apparatus shown in FIG. 1 illustrating the parts array fed by the apparatus;
FIG. 3 is a side view of the portion of the parts supplying apparatus illustrated in FIG. 2;
FIG. 4 is a perspective view of a pouring spout or pouring attachment attached to a pair of wires and forming a portion of the parts array in accordance with the present invention;
FIG. 5 is a perspective view of a portion of a container to which is attached the pouring spout or pouring attachment; and

DETAILED DESCRIPTION OF THE INVENTION

With reference initially to FIG. 1, a parts supplying apparatus (according to the present invention) is designed to feed a parts array 10 in the form of a plurality of pouring spouts or pouring attachments 11. The pouring attachments are attached to a pair of wires 31 and 33 that are disposed generally parallel to one another. The pouring attachments 11 are molded articles and are attached to the wires 31, 33 in a row to form an elongated strip or parts array of pouring attachments 11. As can be sen in FIGS. 1 and 2, the pouring attachments 11 are disposed in the parts array 10 in substantially the same vertical orientation with respect to one another.
As seen with reference to FIG. 4, the pouring attachments 11 each include a base 16, an opening portion 15 that is adapted to effect opening of the container to which the attachment is secured, and a lifting part 13 that causes the opening part 15 to perform the opening operation through lifting action. The underside of each of the pouring attachments 11 is attached to the two parallel wires 31 and 33. The wires 31 and 33 are integrally attached and formed with the resin molded pouring attachments 11 when the attachments 11 are molded by placing the wires 31, 33 into the molding die. The wires 31, 33, which can be made of plastic or metal such as steel, constitute a carrier for carrying the pouring attachments 11 and forming the pouring attachment array 10.
The wires 31, 33 are attached in the vicinity of the exterior underside surface of the pouring attachments 11 so that the wires 31, 33 can be removed from the pouring attachments 11 by pulling the wires away from the pouring attachments. The wires 31, 33 attached to the pouring attachments are spaced apart and preferably positioned adjacent opposite ends of the pouring attachments as shown in FIG. 4.
FIG. 5 illustrates the pouring attachment 11 separated from the wires 31, 33 and attached to the top of a container 20 formed from paper, plastic or the like. FIG. 8 also illustrates the pouring spout 11 attached to the top of a container. The pouring attachment can be secured to the container 20 by an automatic setting apparatus which is not specifically shown. More specifically, the pouring attachment 11 is attached to a sealing sheet (not specifically shown in the drawing figures) that has been previously adhered to the container 20 to close or seal the container opening 21 formed in the top of the container 20. The opening 21 in the container 20 is then opened by pulling up on the lifting part 13 of the pouring attachment 11 as shown in FIG. 5. This causes the opening part 15 to pivot down into the container opening 21, thus breaking the sealing sheet extending over the container opening 21.
Turning once again to FIG. 1, the parts supplying apparatus includes a winder arrangement 40 that is comprised of a motor 41, a winding drum 43, a winding position adjuster 45, two spaced apart guide rollers 47, 49, and two spaced apart guide plates 51, 53. The motor 41, the winding drum 43, the winding position adjuster 45, the pair of guide rollers 47, 49, and the pair of guide plates 51, 53 are all generally vertically oriented and disposed substantially parallel to one another. The motor 41, the winding drum 43 and the winding position adjuster 45 extend through respective openings in a first plate member 42 while the pair of guide rollers 47, 49 and the pair of guide plates 51, 53 are disposed on a second plate member 44 that is spaced above the first plate member 42.
The motor 41 possesses a rotary axle 55 that is coupled to the rotary axle 59 of the winding drum 43 via a horizontally disposed belt 57. The winding position adjuster 45 includes a rotary body or shaft 65 whose end is provided with a gear 63. The end of the rotary axle 59 is also outfitted with a gear 61. The gear 61 on the rotary axle 59 and the gear on the rotary body 65 engage one another. In this way, rotary movement of the motor 41 is transferred to the winding drum 43 and to the rotary body 65 of the winding position adjuster 45.
In addition to the rotary body 65, the winding position adjuster 45 is comprised of a generally vertically oriented support member 67 which supports and permits free rotation of the rotary body 65 and a vertically movable arm member 69 that is movable along the length of the rotary body 65. The support member 67 is provided with a groove 73 extending along the surface of the support member 67 that faces the rotary body 65.
The outer peripheral surface of the rotary body 65 is provided with spiral grooves 71 that are engaged by a pin (not specifically shown) which is located in a through hole in the movable arm member 69. The arm member 69 includes a generally horizontally extending projecting portion 69a having a free end that engages the vertical groove 73 of the support member 67 in such a way that the projecting portion 69a is guided over a vertical movement path. The projecting portion 69a is also formed with a generally horizontally elongated hole 75 through which is adapted to pass the pair of wires 31, 33.
As shown in FIG. 3, the first guide plate 51 is formed with two small holes 77, 77 and the second guide plate 53 is similarly formed with two small holes 79, 79. The holes 77, 77, 79, 79 are adapted to permit the passage of the pair of wires 31, 33 with the wires 31, 33 initially passing through the first guide plate 51 and subsequently through the second guide plate 53 located downstream of the first guide plate 51 with respect to the direction of travel of the wires 31, 33. The distance between the pair of holes 79, 79 in the second guide plate 53 is smaller than that between the pair of holes 77, 77 in the first guide plate 51, thereby causing the wires 31, 33 to approach one another as they pass from the first guide plate 51 to the second guide plate 53.
As shown in FIG. 2, the apparatus further includes an array guide member 80 for guiding the array 10 of interconnected pouring attachments 11. The guide member 80 is an elongated, slender box-shaped element provided with a guide hole or guide passage 81 that extends along the length of the guide member 80. The guide hole 81 is sized to accommodate therein the pouring attachment array 10.
As can be seen from FIG. 3, the guide member 80 is provided with a pair of outlet holes 85 that communicate with the guide hole 81. The outlet holes 85 extend through the guide member side wall 84 that faces towards the first guide plate 51. The inside surface of the guide member side wall through which the outlet openings extend constitutes the guide surface 83 for the guide member 80.
As shown in FIGS. 2 and 3, the two outlet holes 85, 85 serve as a drawing arrangement through which are drawn the two wires 31, 33 from the pouring attachment array 10 passing through the guide hole 81 in the guide member 80. Furthermore, on the side wall 86 of the guide member 80 opposite the side wall 84 in which are located the outlet holes 85, 85 is provided with a generally horizontally elongated hole 87. This elongated hole 87 is adapted to receive a portion of the outer periphery of a rotary array advancing body 89 that is positioned adjacent the guide member 80.
The pouring attachments 11 on the array 10 are introduced into the longitudinally extending hole 87 and are pushed against the guide surface 83 of the guide member 80 by the rotary body 89 that is adapted to freely rotate about an axle 91. The rotational axis of the rotary body 89 is generally vertically oriented and the rotary body 89 lies in a plane that is generally perpendicularly oriented to the plane of movement of the array 10. The outer peripheral surface of the rotary body 89 is provided with projections 93 that are spaced apart from one another by a pitch that is approximately the same as the spacing between adjacent pouring attachments 11 on the array 10.
The wires 31, 33 that are separated from the pouring attachments 11 and fed through the outlet holes 85, 85 in the guide member 80 are fed to the winder 40 by way of the pair of guide rollers 47, 49 that are positioned downstream of the first guide plate 51 and the second guide plate 53 with respect to the direction of advancement of the array 10. The two guide rollers 47, 49 are mounted for free rotation on the second plate member 44. The rotational axes of the guide rollers 47, 49 are substantially parallel to one another and to the rotational axis of the array advancing rotary body 89.
The following is an explanation of the operation of the parts supply apparatus. When the motor 41 is rotatably driven, the winding drum 43 starts to rotate via the belt connection 57. At the same time, the rotary body 65 rotates through the interengaging gears 61, 63. The rotation of the rotary body 65 causes the arm member 69 to move axially up and down along the length of the rotary body 65 through the engagement between the pin (not specifically shown) on the arm member 69 and the spiral grooves 71 on the rotary body 65.
Due to the rotation of the winding drum 43, the wires 31, 33 are pulled through the holes 85 in the guide member 80 in the direction indicated by arrow A in FIG. 2. This causes the pouring attachment array 10 to moves through the guide passage 81 of the guide member 80. At the same time, the portion of the peripheral surface of the rotary body protruding through the opening 87 of the guide member 80 and into the guide passage 81 presses the array 10 into contacting engagement with the guide surface 83 of the guide member 80.
The foregoing operation also effects separation of the wires 31, 33 from the pouring attachments 11. With the rotary body 89 pushing the pouring attachment array 10 against the guide surface 83 of the guide member, the wires 31, 33 attached to the pouring attachments 11 peel away from the attachments 11 and are drawn out through the outlet holes 85, 85 on the guide surface 83. The separation of the wires 31, 33 from the pouring attachments can proceed rather easily because the array 10 is pushed against the guide surface 83 by the rotary body 89.
Once separated from the wires 31, 33, the pouring attachments 11 are to an discharged from the guide member 80 to the outside and are fed one by one to an automatic setting apparatus (not specifically shown) by a feeding device (not specifically shown) such as a chute or a manipulator arm. All of the separated pouring attachments 11 face in the same direction or are oriented in the same manner, and there is no possibility that any of them will be turned upside down. For this reason, it is possible to accurately attach the pouring attachments 11 to the proper place on a container such as shown in FIG. 5.
As the two wires 31, 33 are drawn out from the outlet holes 85, 85 and are passed through the small holes 77, 77, 79, 79 provided in the two guide plates 51, 53, the wires 31, 33 converge together as shown in FIG. 3 by virtue of the smaller spacing between the holes 79, 79 in the second guide plate 53. The wires 31, 33 are then conveyed over the guide rollers 47, 49 and are directed to the winding position adjuster 45 where the converged wires 31, 33 pass through the opening 75 in the projecting portion 69a of the mounting arm 69. The wires 31, 33 are then finally wound around the winding drum 43 as shown in FIG. 1. The mounting arm 69 which is moving vertically along the winding drum to produce generally even wound layers of wires.
The parts.array 10 according to the present invention can be delivered to the parts supply apparatus as shown in FIG. 1 in a sterile condition since the pouring attachments 11 and the wires 31, 33 are simultaneously molded as one unit and due to the array 10 being in a sealed box. Moreover, only the guide member 80 and the rotary body 89 contact the parts array 10, and so it is only necessary to sterile these two elements. Thus, it is possible to easily keep the pouring attachments 11 in a hygienic or sterile condition without great difficulty.
The present invention provides a parts array possessing a variety of advantages and desirable attributes.
It is understood that variations with respect to the above described embodiments may be employed. For example, the present invention is applicable to resin molded parts other than the pouring spout or pouring attachment used in conjunction with containers. Additionally, it is envisioned that the carrier illustrated in FIG. 4 is not limited to two wires, but can be in the form of three or more wires.
The principles, preferred embodiments and modes of operation of the present invention have been described in the foregoing specification. However, the invention which is intended to be protected is not to be construed as limited to the particular embodiments disclosed. Further, the embodiments described herein are to be regarded as illustrative rather than restrictive. Variations and changes may be made by others, and equivalents employed, without departing from the scope of the claims. Accordingly, it is expressly intended that all such variations, changes and equivalents which fall within the scope of the present invention as defined in the claims be embraced thereby.

Claims

A pouring spout array comprising a plurality of resin-molded pouring spouts for attachment to containers and a carrier to which each of the plurality of resin-molded pouring spouts is attached so that the pouring spouts are arranged in a row on the carrier, the pouring spouts (11) each including a base portion (16) adapted to be attached to a container and an opening portion (15) movable with respect to the base portion (16) to produce an opening (21) in the container, said plurality of pouring spouts (11) being attached to the carrier (31, 33) including a pair of spaced apart wires by injection molding the pouring spouts on the carrier in such a way that the pouring spouts are separable from the carrier when the carrier is pulled away from the pouring spouts.
A pouring spout array comprising a plurality of resin-molded pouring spouts for attachment to containers and a carrier to which each of the plurality of resin-molded pouring spouts is attached so that the pouring spouts are arranged in a row on the carrier, the pouring spouts (11) each including a base portion (16) adapted to be attached to a container and an opening portion (15) movable with respect to the base portion (16) to produce an opening (21) in the container, said plurality of pouring spouts (11) being attached to the carrier (31, 33) including a pair of spaced apart wires being integrally molded into each of said resin-molded pouring spouts (11) in such a way that the pouring spouts are separable from the carrier when the carrier is pulled away from the pouring spouts.
The pouring spout according to claim 1 or 2,
characterized in that the pouring spouts are arranged on the carrier in a single row and are all oriented in the same manner on the carrier.
The pouring spout array according to one of the previous claims,
characterized in that each pouring spout (11) includes a lifting part (13) for effecting movement of the opening portion (15) to produce an opening in the container (20).
Process for forming a pouring spout array (10), comprising providing a carrier (31, 33), attaching to the carrier a plurality of resin-molded pouring spouts (11) that each include a base portion(16) adapted to be attached to a container (20) and an opening portion (15) movable with respect to the base portion (16) to produce an opening in the container, the pouring spouts (11) being attached to the carrier (31, 33) including a pair of wires by intermittently injecting thermoplastic resin on the carrier to form the pouring spouts on the carrier so that the pouring spouts are disposed in a row on the carrier, the pouring spouts being attached to the carrier so that when the carrier is pulled away from the pouring spouts the carrier is separated from the pouring spouts.
Process for forming a pouring spout array (10), comprising providing a carrier (31, 33), attaching to the carrier a plurality of resin-molded pouring spouts (11) that each include a base portion(16) adapted to be attached to a container (20) and an opening portion (15) movable with respect to the base portion (16) to produce an opening in the container, the pouring spouts (11) being attached to the carrier (31, 33) including a pair of wires by placing said pair of wires in a mold and integrally molding the wires with the pouring spouts so that the pouring spouts are disposed in a row on the carrier, the pouring spouts being attached to the carrier so that when the carrier is pulled away from the pouring spouts the carrier is separated from the pouring spouts.