UA98950C2 - Barrel, chime and their assembly and method of manufacture of barrel and mould for molding barrel - Google Patents

Abstract

Container assembly comprising a container and a chime fixed to each other, the container having an end part and a peripheral side wall, characterized in that the fixation between the chime and the container is situated at the end part of the container and at a distance from said peripheral side wall.

Description

The present invention relates to containers, in particular barrels, and grooves installed in the lower part of these containers, as well as to the method of manufacturing such containers.

Common practice involves equipping a container or barrel with bottom and top grooves. Such devices usually perform several functions. The first is a purely protective function - to protect the base and upper part of the barrel from damage during use. The barrel base groove also provides a flat base for the barrel so that it can be easily installed in a vertical position. In most cases, the upper and lower racks are designed taking into account the stacking of barrels, which simplifies their transportation and storage. Another important function of grooves is to facilitate the use of barrels. Indeed, most of the chutes are equipped with a skirt which, when assembled, is placed around the periphery of the barrel and which forms a rolling ring, so that when the chutes have lower and upper chutes, they can easily be rolled on their sides without the sidewalls of the chutes touching the ground.

Several options for fixing grooves on the barrel are known. In most cases, however, the lugs are welded to the side walls of the barrel, and this has the disadvantage that once installed they cannot be removed or replaced.

This shortcoming was overcome in the patent OE3336681, which describes the groove, which is attached by snaps to the protrusions provided on the periphery of the corresponding barrel. In this case, the grommets can be easily removed from the barrel and replaced, which simplifies both the repair and the reuse of both the grommets and the barrel.

Given the growing demand for plastic barrels and the growing need to reuse them and reduce the cost of processing, it can be argued that the application of grooves on barrels and the removal of said grooves from barrels need further simplification.

The present invention achieves the objectives by providing a container assembly including a container and a groove attached to each other, the container having an end portion and a peripheral side wall, characterized in that the fixation between the groove and the container is carried out at the end part of the container and at a certain distance from the specified peripheral side wall.

The end part is mostly the base of the container, and the bottom part is the bottom part (bottom part).

By changing the design of the fixing of the lugs to the container, the applicant moved the means of attachment to the central part of the base of the container. Now the fixation of the grooves no longer depends on the peripheral circumference of the container. This provides the advantage that fixing the groove to the container can be done in the same way for containers of different diameters, which greatly simplifies the automation of processing and increases manufacturability, especially in terms of reuse.

Other advantages associated with various embodiments of the present invention include locking the groove with a snap as it engages with the edge of the bottom of the barrel (which, of course, involves automated production). Moreover, in cases where no other means of fixation is used, the bottom liner of the container can be easily removed and reused separately from the container and, if properly and easily replaced with another replacement liner, such a container can be returned to production. In addition, the groove of the bottom provides ease of use, and its flexibility provides such an advantage as resistance to reset.

Preferably, the fixing between the tube and the container is removable, so that the tubes can be easily replaced in case of damage. In the best embodiment, the locking is achieved by a snap connection between the tube and the container.

The present invention also applies to the container itself, since in order to implement the above-described fixation, the container according to the present invention must have a base equipped with means for attachment located at a certain distance from the peripheral side wall of the container.

The groove according to the present invention includes at least an inner sleeve equipped with means for fixing, and an outer skirt which is designed to engage with a portion of the peripheral side wall of the container.

Finally, the present invention also relates to a method of manufacturing a container according to the present invention, which includes providing means for attachment to the base of the container and at a certain distance from the peripheral side wall of the container.

Preferably, such a container is made of a thermoplastic material, which is formed in a mold with the simultaneous creation of means for attachment, for which a mold with a cavity is used, which has a hole in its part that corresponds to the base of the container being formed.

Preferably, the method additionally includes introduction into the cavity of the mold during the formation of the rod, which reaches the pit of the cavity of the mold.

The use of such a rod provides advantages especially in the case of blow molding of the container, since it helps the thermoplastic material to enter the recess where the means of attachment, in particular the connector with a snap, are formed on the base of the container.

Explanatory pictures:

In Fig. 1 shows a perspective view from above of one of the variants of the plastic groove of the bottom according to the present invention.

In Fig. 2 shows a perspective view from below of the same embodiment of the plastic groove of the bottom according to the present invention.

In fig. 3 is a cross-sectional view of the bottom groove of the present invention, in combination (i.e., assembled) on the beer keg of the present invention.

In Fig. 4 is a more detailed cross-sectional view of FIG. 3.

In Fig. 5 is a schematic cross-sectional view of a blow mold with hood in accordance with one aspect of the present invention.

In Fig. 6 shows a cross-section of the raised assembly assembly of the groove and barrel according to the present invention.

In Fig. 7 is a top perspective view of an alternative embodiment of the plastic bottom groove according to the present invention.

In Fig. 8 is a perspective view from below of an embodiment of the plastic bottom groove shown in Fig. 7.

Detailed description of the best embodiment of this invention:

In Fig. 1 and 2 of the attached drawings show the groove 1 of the bottom of the barrel according to the present invention. The groove 1 of the bottom of the barrel includes a slot 10 for the end part of the bottom of the barrel. The socket 10 is specially adapted for engagement with the correspondingly equipped end part of the bottom of the barrel (not shown in Fig. 1 and 2, see

Fig. With and 4). Such coupling due to mutual fitting provides a fastening effect for at least partial attachment of the groove to the barrel.

In this preferred embodiment of the groove 1 according to the present invention, the socket 10 has an opening 10a surrounded by corresponding free edges 104 of numerous elastic flexible teeth 1005. The teeth 106 enter radially into the opening 10a, and their bases sit on the inner, preferably central sleeve 3.

Groove 1 includes a "spider" 2 for engagement with the bottom of the barrel body (not shown in Fig. 1 and 2, see

Fig. With and 4, as well as further description), on which the bottom sits. The spider 2, in turn, contains a central sleeve C with several legs or spokes 4 that depart from it radially outward. These spokes end on the annular wall 5, which defines one side of the channel 6, which is also limited in its lower part by the base 13 of the groove and is surrounded on the remote side by the surface of the wall 7a of the vertical skirt 7 of the groove.

Spokes 4a, 46, 4c and 44 have profiles 14 (for example, arc-shaped) to provide the effect of a rigid beam.

The vertical skirt 7 of the groove supports the peripheral flange 12, designed to engage with the surface of the peripheral side walls of the fixed body of the barrel.

The skirt 7 also has drainage channels 9 for draining the liquid that accumulates between the skirt 7 and the peripheral side walls of the barrel body. In use, the barrel collection assembly of the present invention can accumulate water and other liquids that would remain between the barrel and the barrel in its normal vertical position, but which can drain through these channels 9.

Similarly, the bottom b has drainage channels 11 for draining liquid. It should be noted that the container sets of this invention are often washed and filled in an inverted state, during which water could accumulate on the bottom, if it did not have the opportunity to be removed through these drainage channels. It should also be noted that the barrels according to this invention and the assembly units containing them are preferably barrels of a closed system.

In Fig. Figures 4 and 4 show the lower parts of the body 15 of the barrel in a cut-out section. The body 15 includes a peripheral side wall 17 and a base 15a. The base 15a has a shoulder 16, intended for engagement with the slot of the groove 1 of the bottom of the barrel, shown in Fig. 1 and 2.

The shoulder 16 of the bottom has cone-shaped side walls 16ba, which depart from the periphery of the body 15 of the barrel and end at the protruding support 16Bb, which is particularly suitable for engagement due to mutual fitting with the auxiliary elements of the groove 1 of the bottom, as described here.

It should be clear that the shoulder 16 of the bottom serves as a means of attachment, which can interact with the means of fixation (socket 10 of the bottom of the barrel with teeth 10B) of the groove, and that in accordance with this invention, the fixation of the groove to the barrel is carried out at a certain distance from the periphery of the barrel.

In Fig. 5 shows an example of a blow mold that can be used to form various barrel bodies of the present invention from a thermoplastic material. This exemplary form includes a suitable means for forming the end members of the bottom of the barrel described herein.

More specifically, Fig. 5 illustrates a pull blow molding mold that includes a rod extending inside the mold to a pit in its base. This rod and the cavity of the blow mold together form a barrel having a shoulder on the bottom (see, for example, shoulder 16 in Figs. 3 and 4) which includes conical side walls (see 16a in Figs. 3 and 4) extending from the periphery of the body of the barrel and end on a protruding support (see, for example, 166 in fig. 3 and 4), which is designed for coupling due to mutual fitting with the groove 1 of the bottom.

In accordance with best practice, this invention involves the use of pneumoforming processes.

A family of blow molding processes are used in the production of hollow thermoplastic products, including but not limited to containers such as bottles. The main process involves, at the first stage, obtaining an intermediate product, which is called a blank or preform, from a melt of thermoplastic material. Such a heated workpiece is further formed by blowing it with gas under pressure in a mold, the cavity of which determines the final shape of the product.

The technology of pneumatic molding on an industrial scale dates back to the 1930s, but its widespread use began in the 1950s with the appearance of high-density polyethylene and non-proprietary production equipment. Since then, a wide range of other thermoplastic materials have come into use (especially with the spread of polyesters , compared to polyolefins, which in certain cases have been associated with loss of smell and simultaneous swelling, as well as with increased oxygen penetration in the packaging of certain beverages), and although high density polyethylene (HDPE) accounts for 5595 of all thermoplastic materials used for pneumoforming, the share of polyethylene terephthalate (PET) among the rest of the materials is almost 8895. The market for more expensive, but according to certain characteristics, better polyethylene naphthalate (PEN), especially for the manufacture of returnable and reusable containers, is developing rapidly.

The family of blow molding processes includes extrusion blow molding, blow molding (and related extrusion molding), and blow molding (also known as "biaxially oriented molding"), as well as a number of their hybrids.

Nowadays, among these methods, pneumoforming with extrusion is the most widely used, which involves the extrusion (periodic or continuous) of a hollow workpiece in the direction of falling downwards. When the workpiece reaches sufficient dimensions, a predetermined length of the workpiece is enclosed in the mold (for example, by closing two halves of the mold around a predetermined length of the lowered workpiece). For the production of small containers, extrusion machines with a reciprocating screw and two screws are used, equipped with a secondary accumulator and a plunger for periodic extrusion of blanks. For large containers, including cylindrical ones, extruders with an accumulative head and a plunger feed are used.

When the workpiece P (see Fig. 5) is inside the mold M, it is inflated with compressed gas, pressing it against the rigid inner surfaces of the closed cavity of the mold, as a result of which it takes the form of a corresponding hollow body, which at the young ends will become the shape of the finished container. This process may include forming shoulder strap 16 on the bottom of the container. It should be noted that while older blow molding machines required additional processing to bring the container to its final form (and created problems with material residues inside the resulting bottle), this problem was overcome for smaller containers by the harmonious interaction of the red-hot needle and the neck ring of the mold, when the inflated bottle is still in the mold. However, blow-molded wide-mouth containers still require a press cutting operation for final processing.

Blow molding is a multi-stage process (historically two-stage, but now almost exclusively three-stage) in which a preform injection-moulded into a space defined by a mold and a central core inserted into it (instead of being extruded) is transferred (for example, on the same central rod) to the next stage of blow molding. In the extrusion version of this type of blow molding, a measured amount of molten thermoplastic material is injected into a mold to obtain a preform, after which a center rod is inserted into the mold to force the melt into the gaps left between the center rod and the interior surfaces of the mold. , resulting in a workpiece.

Blow molding is particularly suitable for applications using thermoplastics capable of internal linear molecular orientation, such as PET. The workpiece can be obtained by extrusion or injection molding, although the latter option is most often used in connection with blow molding and extraction. A specific feature of the blow molding process is that the preformed preform is carefully conditioned to a temperature slightly above the glass transition temperature of the thermoplastic material in question (that is, when it is hot enough to be blown but cool enough to to inhibit re-randomization of the molecular structure after centering the mold), after which it is drawn, oriented ("partially" and axially or biaxially) and blown Stress-induced crystallization in a drawn thermoplastic material can - in the case of PET - be increased by as much as 20 and even 2895.

The central rod A is used as shown in fig. 5. It should be noted that in accordance with the best practice of the application of this invention and in addition to providing a component of axial stretching of the workpiece P during the blowing operation, the rod A can also be elongated to direct the plastic material into the VE part of the cavity M of the mold and obtain a shoulder 16 on the outer surface of the bottom of the barrel. Part VE includes means for clamping the shoulder strap 16 and producing a constriction at 16a which then expands at 1660.

Finally, a container set consisting of a barrel and a groove is offered, shown in Fig. 6. In this connection, reference is made to fig. 1-4 and Fig. 6. The packing set includes a barrel body 15, which has a base 15a, which carries a shoulder 16 of the bottom of the barrel body. The groove 1 of the bottom of the barrel includes a slot 10 for the shoulder strap of the bottom of the barrel. The socket 10 for the shoulder of the bottom of the barrel and the shoulder 16 of the bottom of the barrel are adapted by mutual fitting for coupling, which ensures, at least partially, mutual fixation of the groove and the barrel in the assembled state. In various implementation options, the fastening effect due to mutual fitting is an elastically displaced mechanically mutual alignment between the protruding parts of the barrel 15 and the groove 1. In Fig. 6, groove 1 of the bottom is shown at rest, in a stacked position on a common surface

T of the supporting barrel (not shown), but it is essentially identical with the upper groove C, shown in a raised position in relation to the upper part of the barrel 15.

In order to attach the groove 1 according to this invention to the barrel, it is enough to install the groove 1 with the hole 1ba above the shoulder 16 of the bottom of the barrel and press it down until the flexible teeth jump over the protruding support 165.

In the case where the barrel is a plastic barrel, it is better to create an excessive internal pressure in the barrel to prevent it from being deformed during the fixing of the groove 1.

To remove flute 1, it is simply pulled from the barrel, although this operation can be easily automated with a cylindrical drill, destroying the teeth 105, after which flute 1 falls from the barrel, as well as the teeth 1060.

Such automated and simple removal of the groove obviously simplifies the reuse of barrels.

It should be noted that in the case when barrels of different sizes have standardized fixing elements on the bottom, the process of assembling the groove 1 and the barrel can be automated regardless of the size of the barrels. Such automation is especially convenient for reusing barrels, as there is no need to sort them.

In Fig. 7 and 8 present an alternative embodiment of the groove 1 in accordance with the present invention. In this version, the groove includes four concentric cylindrical walls 17-18-19-20, the outermost of which, wall 17, serves as the skirt of the groove 1.

The very outer wall 17 and the wall adjacent to it are mutually connected at one of their edges by a transverse rim 21, while the very inner wall 20 and the adjacent wall 19 are connected to each other by another transverse rim 22. Both rims 21 and 22 are preferably placed in the same imaginary plane and define the base of the groove 1. This base is preferably equipped with zones 23 of increased rigidity to strengthen the grip of the base when placed on the ground.

The free edge of the outermost wall 17 is equipped with a peripheral rim 12 and drainage grooves 9, the same as those described in connection with the groove shown in fig. 1-4.

The free edges of the two intermediate walls 18 and 19 are connected to each other by an annular rim 24, while the free edge of the innermost wall 20 enters the central sleeve 3, as described in connection with the groove shown in Fig. 1- 4, and slot 10 for the shoulder strap of the bottom of the barrel.

As can be seen in the figures, drainage grooves 25 are provided at the junction of the walls 17-20 and the corresponding rims 21, 22 and 24, as well as at the junction of the innermost wall 20 and the central sleeve 3.

Installation of this alternative groove on the barrel is carried out similarly to what was described in relation to the groove presented in Figs 1-4.

Finally, it should be noted that both barrel and groove can have different shapes. Barrels, for example, can have a circular cross-section, a rectangular cross-section, or a cross-section of any other shape. 7 vo pen nin y a ee as yayu, tk o asanas zdv vya as i m . and she and Java | pom ey i yava comrade he and she g: and and ; I x z y i; ren Shk she X 1 t Ne n ftine their eye u / en | A y, a: Ch no her GI y

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Claims (12)

1. A barrel assembly comprising a barrel 1 and a groove (1) fastened together, the barrel having a first end containing a hole and a second end (15a) defining a base which is separated from the first end by a peripheral side wall ( 17), where the groove (1) is fixed on the means for attachment (16), which are located at the second end (15a) of the barrel and at a certain distance from the indicated peripheral side wall (17), which differs in that the means for attachment (16) contain cone-shaped side walls (Iba), which depart from the second end (154) in the transverse direction and end at the protruding support (165). 2. The barrel set according to item 1, which is characterized by the fact that the fixing between the barrel 1 and the tool is a removable fixing. 3. Barrel set according to one of paragraphs And or 2, which differs in that the fixation between the barrel and the groove is a connection with a snap. 4. A barrel having a first end containing an opening and a second end (1542) defining a base that is separated from the first end by a peripheral side wall (17), the barrel including means for attaching a bore (16) located at the second end (15a) at a certain distance from the peripheral side wall (17) of the container, which is characterized by the fact that the means for attachment (16) contain cone-shaped side walls (16a) that depart from the second end (15a) in the transverse direction 1 end on a protruding support (165). 5. Barrel according to point 4, which is characterized by the fact that it is made of thermoplastic material. 6. A groove suitable for fixing on the lower part of the barrel, the groove contains: mainly a central inner sleeve (3) with means for fixing (10), which are suitable for fixing the groove to the lower end of said barrel; numerous spokes (4) that depart from the inner sleeve (3) radially outwards 1 end on the circular wall of the skirt (7), ensuring the engagement of the skirt with the peripheral side wall (17) of said barrel, which is characterized by the fact that the fixing means (10) inner bushings (3) are suitable for interaction with the corresponding means of attachment (16) located at the lower end of the barrel, and which have the form of cone-shaped side walls (ba), which depart from the lower end (15a) in the transverse direction 1 and end on a protruding support ( 165). 7. Groove according to point 6, which is characterized by the fact that the specified means of fixation (10) have a socket in the form of an opening (10a), surrounded by the corresponding free ends of numerous elastic teeth (10), which depart radially inward from the inner sleeve. 8. A method of manufacturing a barrel having a first end containing a hole, 1 a second end (I5a), which defines a base that is separated from the first end by a peripheral side wall (17), the method includes blow molding a container containing attachment means (16) at a second end (152) of the barrel and at a certain distance from the peripheral side wall (17 ), which is characterized in that the means for attachment (16) comprise cone-shaped side walls (ba) that extend from the second end (152) in a transverse direction and end at a protruding support (165). 9. The method according to point 8, which is characterized by the fact that the barrel is made by the method of molding by blowing a melt of thermoplastic material into the cavity of the mold (M) with the simultaneous creation of the specified means of attachment, while the cavity of the mold (M) defines the hole (VE) in the area located on the second end (15a) of the barrel 1 at a certain distance from the peripheral side wall (17), which is characterized by the fact that the receptacle (BE) contains cone-shaped side walls (ba), which depart from the second end (15a) in the transverse direction 1 and end at protruding support (165). 10. The method according to point 9, which is characterized by the fact that it additionally includes the introduction into the cavity of the form (M) of the rod (K) during its formation, which passes inside until it reaches the pit (BE). 11. A mold suitable for blow molding a barrel, the mold includes a cavity (M) defining the outer shape of the barrel, which has a first end containing an opening, a second end (1524) defining a base, which is separated from the first end by a peripheral side wall (17), while the cavity of the form (M) additionally defines the receptacle (BE) in the area located at the second end (15a) of the barrel and at a certain distance from the peripheral side wall (17), which differs in that the receptacle (BE) ) contains cone-shaped side walls (ba) that extend from the second end (1524) in a transverse direction and end at a protruding support (165). 12. The mold according to item 11, which additionally contains a rod (K) suitable for insertion into the cavity of the mold (M) during its formation until it reaches the pit (BE).