JP5426870B2 - Container spout - Google Patents

Description

  The present invention includes a nozzle portion and a locking portion provided in a mounting portion below the nozzle portion, and is fitted into a hole portion provided in a carton constituting the container, and is engaged with the hole portion by the locking portion. More specifically, the spout of the container made of a plastic resin that is fixed to the carton is fixed, and more specifically, the locking portion is composed of a plurality of ribs having a taper at an upper end, and at least three portions of the mounting portion. It relates to the spout of the container arranged in the above.

  Conventionally, containers for storing milk, juice, liquor, etc., for example, low density polyethylene (LDPE), etc. in the opening (hole) of the carton provided on the inclined roof of the upper part of the container made of carton A cylindrical spout made of a plastic resin is attached, and when attaching this spout, the periphery of the hole of the carton is fitted to the claw-shaped locking part provided on the outer periphery of the bottom of the spout. In some cases, for example, Patent Document 1 and Patent Document 2 fix the spout to the container carton by thermally welding the spout flange.

JP 2000-25816 A Japanese Utility Model Publication No. 60-37296

However, in such a container, the spout is formed by injection molding, but after the molten resin is cooled and solidified, it is generally taken out by sliding the mold and taking out the spout. Since the slide mechanism is large, it is not possible to further increase the number of these spouts taken from a predetermined mold. On the other hand, if the molded spout can be forcibly removed from the mold without using the slide mechanism, it becomes possible to further increase the number of spouts in the mold of a predetermined size, Cost reduction can be expected. However, since the spout is made of a soft plastic resin, the claw-shaped locking part of the spout will be deformed when forcibly removing it, so that it will not perform its function, and the spout will be smooth on the carton. This causes a problem that it cannot be attached to the camera.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a container spout having an improved production efficiency by making the locking portion of the spout into a shape that can cope with unreasonable punching during mold forming.

For this reason, the invention described in claim 1 is provided with a cylindrical nozzle portion and a locking portion provided in an attachment portion below the nozzle portion, and is fitted in a hole portion provided in a carton constituting the container. In the spout of the container made of a plastic resin, locked in the hole by the locking portion, and fixed to the carton,
The locking portion includes a plurality of ribs, and the outer diameter of the rib is 0.2 mm to 1.0 mm from the mounting portion, and the rib bulges outward at the upper end portion of the rib. By providing the bulging part to be provided, the bulging part is provided continuously from the rib, and at the upper end of the rib, the height decreases toward the outside of the hole periphery, A taper with a moderate slope is provided,
The tip of the bulging portion is positioned outward from the tip of the outer diameter of the rib, and the amount of bulging is 0.05 mm to 0.3 mm,
While the carton at the periphery of the hole is guided by the taper of each rib in each locking portion, the rib giving the curved shape to the rib is curved, and the locking portion of the mounting portion is the carton. The bulging portion of the rib is fixed to the rib by the bulging portion, and the bulging portion of the rib is fitted and locked to the rib. It is possible to prevent this .

According to a second aspect of the present invention, in the spout of the container according to the first aspect, the locking portion is continuously formed from a plurality of ribs and ribs, and the bulging portion is the bulging amount of 0.05 mm to 0. When the spout is manufactured by mold molding, the locking portion is not deformed even if the formed spout is forcibly removed from the mold after the molten resin is cooled and solidified. It is characterized by not being damaged .

According to a third aspect of the present invention, in the spout of the container according to the first or second aspect, the ribs are evenly arranged at three or four locations on the peripheral surface of the mounting portion .

According to a fourth aspect of the present invention, in the container spout according to any one of the first to third aspects, the locking portion is arranged in parallel from the peripheral surface of the mounting portion to the outside and over the entire height in the vertical direction. It consists of two said ribs.

According to a fifth aspect of the present invention, in the container spout according to the first to fourth aspects, each portion of the rib is composed of two protrusions, and the protrusions are symmetrical with respect to the attachment portion with an angle θ. It is prepared for.

According to the invention described in claim 1, it includes a cylindrical nozzle portion and a locking portion provided in the attachment portion below the nozzle portion, and is fitted into a hole provided in the carton constituting the container, At the spout of the container made of plastic resin, which is locked to the hole by the locking portion and fixed to the carton,
The locking portion includes a plurality of ribs, and the outer diameter of the rib is 0.2 mm to 1.0 mm from the mounting portion, and the rib bulges outward at the upper end portion of the rib. By providing the bulging part to be provided, the bulging part is provided continuously from the rib, and at the upper end of the rib, the height decreases toward the outside of the hole periphery, A taper with a moderate slope is provided,
The tip of the bulging portion is positioned outward from the tip of the outer diameter of the rib, and the amount of bulging is 0.05 mm to 0.3 mm,
While the carton at the periphery of the hole is guided by the taper of each rib in each locking portion, the rib giving the curved shape to the rib is curved, and the locking portion of the mounting portion is the carton. The bulging portion of the rib is fixed to the rib by the bulging portion, and the bulging portion of the rib is fitted and locked to the rib. Can be prevented.
Therefore, it is possible to provide a container spout having excellent productivity.

According to the second aspect of the present invention, the spout is continuously formed from a plurality of ribs and ribs, and the swollen portion is 0.05 mm to 0.3 mm which is the swollen amount. When the molten resin is cooled and solidified, the locking portion is not deformed or damaged even if the formed spout is forcibly removed from the mold.

According to invention of Claim 3, since the said rib was equally arrange | positioned in 3 or 4 places of the surrounding surface of an attaching part, the spout of a container can be stably inserted in the hole peripheral part of a carton. It is.

According to invention of Claim 4, since the said latching | locking part consists of two said ribs arranged in parallel toward the outward from the peripheral surface of the attaching part over the full vertical direction, The spout can be stably inserted into the hole periphery of the carton.

According to the fifth aspect of the present invention, each portion of the rib includes two protrusions, and the protrusions are provided symmetrically with an angle θ on the mounting portion, so that the holes are fitted. Sometimes, the two protrusions are curved in opposite directions, and the carton can be securely locked to the mounting portion in a more balanced manner . Therefore, it is possible to provide a container spout having excellent productivity.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 is an overall perspective view of a container provided with a pouring part, FIG. 2 is an enlarged perspective view of the pouring part, and FIG. 3 is an enlarged perspective view of a spout with a lid part removed, FIG. 4 is a plan view of the spout, FIG. 5 is a cross-sectional front view of the spout, FIG. 6 is an enlarged side view of one side of the spout where the carton is locked to the locking portion of the spout, and FIG. FIG. 8 is a schematic plan view of the spout showing the locking of the carton by the curvature of the rib.

  As shown in FIG. 1, the container 1 of the present invention is attached to an appropriate position of a main body 2 for storing liquid contents such as milk, juice, liquor, and an inclined roof in the upper part of the main body 2. The pouring port 3 for pouring the contents in the main body 2 and the pouring part 5 including the lid part 4 detachably attached to the pouring port 3 are configured.

  The main body 2 is constituted by, for example, a carton in which an outer polyethylene layer, an aluminum layer, and an inner polyethylene layer are laminated in this order on the surface of a strong base paper made of long paper fibers and on the back surface of the base paper.

  Moreover, a polyester layer and a polyethylene layer can be further laminated on the inside of the inner polyethylene layer or an ionomer resin using an interlayer polyethylene layer. Furthermore, any layer of stretched polyester, stretched nylon, unstretched nylon, stretched polypropylene, and unstretched polypropylene can be laminated instead of the interlayer polyethylene layer. The aluminum layer may be a vapor deposition layer. The material of the carton is well known, and the above is only an example, and the material is not limited.

  The main body 2 may be made of the above-described material, and a carton having a shape such as a rectangle may be assembled by a well-known method to close the side portion and the bottom portion, and the top portion may be closed to a gable shape. In addition, for example, a circular opening hole 6 for attaching a later-described spout 3 for pouring the contents is provided at an arbitrary position of the carton on the top inclined roof. In addition, the shape of the main body 2 is not limited to the above, and may be any shape as long as the spout 3 is attached to the hole 6.

  Next, as shown in FIG. 3, the spout 3 has a hollow, for example, a cylindrical shape (not limited), and includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), polypropylene ( PP) and other materials (not limited).

  As shown in FIG. 4, the spout 3 is, for example, a nozzle part 3 a having a spiral groove 3 f on the outer periphery of the upper part, a flange 3 b protruding to the side at the bottom, and the inside of the nozzle part 3 a. , A shielding part 3c for closing the nozzle part 3a, an annular thin part 3d for opening a part of the shielding part 3c, and a pull tab 3e for opening the thin part 3d.

  Moreover, as shown in FIG. 2, the lid part 4 has a spiral groove 4a on the inner periphery, and can be screwed into the nozzle part 3a. The lower end is opened and the upper end is closed. Although it is a cap that can be freely mounted, it is made of, for example, a plastic resin such as low density polyethylene (LDPE), linear low density polyethylene (LLDPE), or polypropylene (PP). In addition, the attachment method of the cover part 4 to the spout 3 is not limited to the screwing mentioned above, A method, such as fitting, can be used suitably.

  Therefore, when the contents are accommodated and the contents are poured out from the pouring part 5 attached to the hole 6 of the main body 2, the lid 4 is removed, and then the pull tab 3 e of the spout 3 is pulled up to make it thin. By breaking the portion 3d, the inside of the nozzle portion 3a is opened, and the contents are poured out from the spout 3. Moreover, after pouring, it is set as the structure which attaches the cover part 4 to the nozzle part 3a again by screwing.

  Next, a specific configuration of the spout locking portion in the present invention will be described. First, as shown in FIGS. 4-5, between the nozzle part 3a of the spout 3, and the flange 3b, the latching | locking part for latching this spout 3 to the hole 6 periphery of the main body 2 is carried out. The attachment part 3g which provided 7 is formed. The outer diameter of the attachment portion 3g is approximately equal to or slightly smaller than the inner diameter of the hole portion 6.

  The engaging portion 7 is composed of two ribs 7a arranged outward from the circumferential surface of the mounting portion 3g and arranged in parallel over the entire height in the vertical direction, and at least three locations on the circumferential surface of the mounting portion 3g ( It is preferable to arrange them evenly at four locations in the figure. A taper t having an appropriate gradient is provided at the upper end of the rib 7a so that the height decreases toward the outside of the periphery of the hole 6 as shown in FIG.

  Further, the outer diameter l of the rib 7a (the length from the proximal end to the distal end of the rib 7a, which is the main body of the rib 7a and does not include the bulging portion 8 described later), the distal end of the rib 7a is connected to the hole 6 It is preferable to set it as 0.2 mm-1.0 mm from the base end of the rib 7a located in the outward of the peripheral edge.

  Furthermore, a bulging portion 8 bulging outward is provided at the upper end of the rib 7a. The bulging portion 8 positions the tip of the bulging portion 8 outward from the tip of the rib 7a, and the bulging amount is preferably 0.05 mm to 0.3 mm from the tip of the rib 7a. .

  Here, in order to attach the spout 3, which is a combination of the cap 4 and the main body 2, to the hole 6 of the main body 2, first, in the assembly process of the main body 2, first, below the hole 6. The spout 3 with the cap 4 attached thereto is inserted into the hole 6.

  At this time, the peripheral edge of the hole 6 abuts on the locking portion 7 of the attachment portion 3g in the spout 3, but the carton on the peripheral edge of the hole 6 is guided by the taper t of the rib 7 a in each locking portion 7. On the other hand, as shown in FIG. 8, when the outer diameter of the rib 7a is temporarily shortened by curving the rib 7a, the locking portion 7 of the mounting portion 3g can be inserted into the hole periphery of the carton. Due to the stress of the curved rib 7 a, the locking portion 7 is reliably fitted to the periphery of the hole 6. And since the latching | locking part 7 latches the hole 6 periphery of a carton in planar shape from at least 3 or more places, the latching part 7 can latch the hole 6 periphery strongly strongly.

  At this time, the spout 3 can be stably and reliably attached to the main body 2 by adhesively fixing the upper surface of the flange 3b to the inner surface of the carton around the hole 6.

  Further, since the outer diameter of the rib 7a is set to 0.2 mm to 1.0 mm (relative to the hole diameter of the carton) from the attachment portion 3g, the rib is given appropriate curvature and play between the rib and the hole. The ribs 7a can be inserted into the periphery of the hole 6 of the carton so as to be securely fitted and locked without damaging the periphery of the hole 6 by appropriately reducing the size of the mounting portion. it can.

  Further, since the rib 7a is provided with a bulging portion 8 that bulges outward at the upper end portion, the peripheral edge of the hole 6 of the carton fitted and locked to the rib 7a is connected to the rib 7a by the bulging portion 8. In addition, it is possible to prevent the rib 7a from being detached.

Then, the tip of the expanded portion 8, with is positioned outward from the distal end of the rib 7a, the inflated amount of that, since the 0.05mm~0.3mm from the tip of the rib 7a, a hole of the carton The peripheral edge of the hole 6 can be securely fixed without damaging the peripheral edge of the 6 and can be prevented from being detached from the rib 7a.

  By using the spout 3 provided with such a locking portion 7, when the spout 3 is manufactured by molding, the formed spout 3 is forcibly removed from the mold after the molten resin is cooled and solidified. Even when the locking portion 7 is not deformed or damaged, the locking portion 7 securely engages the periphery of the hole 6 of the carton when the spout 3 is attached to the periphery of the hole 6 of the carton as described above. Can be stopped.

  Accordingly, as a step of taking out the molded spout 3 from the mold, it can be forced out instead of the conventional slide structure, so the number of spouts 3 (number of molding) from a predetermined mold is increased (for example, In the case of the slide structure, the mold of 16 spouts 3 can be set in a predetermined mold, whereas the mold of 32 spouts 3 can be set in the forced punching type). Cycles can be shortened and costs can be reduced, and productivity can be improved.

  Below, the shaping | molding method of the spout 3 in the metal mold | die by a forced punching type which is a well-known technique is demonstrated easily. FIG. 9 is an explanatory view showing a part of the mold during the molding process of the spout in the forced mold.

  In FIG. 9, first, as shown in FIG. 9 (a), after the molten resin is filled (b) from the resin gate port 10 of the mold 9 consisting of the mold parts A to E, the mold part as shown in (c). A and B are pulled out in the nozzle 3a direction of the spout 3 (the vertical direction of the spout 3). Then, as shown in (d), after the mold part C located on the side surface of the nozzle part 3a and in contact with the locking part 7 is forcibly removed in the direction of the nozzle part 3a of the spout 3, as shown in (e) The die part D pushes up the molded spout 3 and the spout 3 is taken out.

  With such a configuration, as described above, the locking portion 7 of the spout 3 can be reliably molded without being deformed, the molding cycle can be shortened and the cost can be reduced, and productivity can be improved.

It is a whole perspective view of a container provided with a pouring part which shows one example of the present invention. It is an expansion perspective view of the extraction | pouring part. It is an expansion perspective view of the spout which removed the cover part. It is a top view of a spout. It is a cross-sectional front view of a spout. It is an enlarged side view of one side of the spout where the carton is locked to the locking portion at the spout. It is a cross-sectional side view of the rib which shows a bulging part. It is a plane schematic diagram of the spout which shows latching of the carton by the curvature of a rib. It is explanatory drawing which showed the shaping | molding process of the spout in the metal mold | die by a forced punching type | mold by a part of metal mold | die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Main body 3 Outlet 3a Nozzle part 3b Flange 3c Shielding part 3d Thin part 3e Pull tab 3f, 4a Spiral groove 3g Attachment part 4 Lid part 5 Extraction part 6 Hole part 7 Locking part 7a Rib 8 Expansion part 9 Gold Mold 10 Resin gate port l Outer diameter t Taper

Claims (5)

A cylindrical nozzle portion and a locking portion provided in a mounting portion below the nozzle portion, and fitted in a hole portion provided in a carton constituting the container, and is engaged with the hole portion by the locking portion. At the spout of a container made of a plastic resin that is fixed to the carton,
The locking portion includes a plurality of ribs, and the outer diameter of the rib is 0.2 mm to 1.0 mm from the mounting portion, and the rib bulges outward at the upper end portion of the rib. By providing the bulging part to be provided, the bulging part is provided continuously from the rib, and at the upper end of the rib, the height decreases toward the outside of the hole periphery, A taper with a moderate slope is provided,
The tip of the bulging portion is positioned outward from the tip of the outer diameter of the rib, and the amount of bulging is 0.05 mm to 0.3 mm,
While the carton at the periphery of the hole is guided by the taper of each rib in each locking portion, the rib giving the curved shape to the rib is curved, and the locking portion of the mounting portion is the carton. The bulging portion of the rib is fixed to the rib by the bulging portion, and the bulging portion of the rib is fitted and locked to the rib. spout of the container, characterized in Rukoto can be prevented. When the locking portion is continuously formed from a plurality of ribs and ribs and the bulging portion is 0.05 mm to 0.3 mm which is the bulging amount, when the spout is manufactured by molding, a molten resin 2. The container spout according to claim 1 , wherein the locking portion is not deformed or damaged even if the formed spout is forcibly removed from the mold after cooling and solidifying . 3. The container spout according to claim 1, wherein the ribs are evenly disposed at three or four locations on the peripheral surface of the mounting portion . 4. The container spout according to claim 1, wherein the locking portion includes two ribs arranged in parallel from the peripheral surface of the mounting portion to the outside and over the entire height in the vertical direction . Each portion of the rib, together consists of two projections,該Tokki the spout of the container according to claims 1 to 4 at an angle θ with symmetrically to the mounting portion.

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