BANK

Abstract

This utility model relates to containers for storing or transporting food products, goods, and materials, in particular, to cans. The technical result of the utility model is a reduction in can manufacturing time. This technical result is achieved by a can made in the form of a cylindrical cup, the upper portion of which contains a neck connected to the cup to form a recess. The transitions from the cup and neck to the recess are formed by chamfers, the radius of the chamfers being no less than the thickness of the can cup. 7 clauses, 2 figs., 1 table.

Description

[0001] Field of technology to which the utility model belongs

[0002] The utility model relates to the field of containers for storing or transporting food products, goods and materials, in particular to a can.

[0003] Technology Level

[0004] A plastic can (RU 198339 U1, published 02.07.2020) is known from the prior art, made in the form of a glass, in the upper part of which a neck is made, connected to the glass by means of a stepped protrusion.

[0005] A PLASTIC FOOD CAN (RU 182436 U1, published 08 / 16 / 2018) is known from the prior art, made in the form of a glass, in the upper part of which a neck is made, connected to the glass by means of a stepped protrusion.

[0006] The disadvantages of analogs include the execution of the connection of the neck with the glass in the form of a stepped protrusion with a sharp change in the geometry of the transition zone, which leads to complications in the molding of the product due to the need to accurately reproduce sharp changes in diameter and localized zones of stress concentration, which increases the time of molding and unmolding of the product and, in some cases, requires the use of additional remolding operations, which increases the time of can production.

[0007] The closest in technical essence is GLASS CONTAINER AND METHOD FOR MANUFACTURING GLASS CONTAINER AT THE PRESS OF A BUTTON (JP 2019077604 A, published 05 / 23 / 2019), made in the form of a cylindrical glass, in the upper part of which a neck is made, connected to the glass by means of a recess.

[0008] A disadvantage of the prototype is the production of the container without transitions from the cup to the recess and from the recess to the neck using chamfers, which causes a sharp change in the geometry of the transition areas and leads to the formation of stress concentration zones during the molding of the product, complicates the process of removing it from the mold and increases the time it takes to manufacture the can.

[0009] Disclosure of the essence of the utility model

[0010] The technical problem that the utility model is aimed at solving is to eliminate the above-mentioned shortcomings of analogues and to create a can with reduced manufacturing time.

[0011] The technical result of the utility model is a reduction in the time required to manufacture a can.

[0012] The specified technical result is achieved due to the fact that the can is made in the form of a cylindrical glass, in the upper part of which a neck is made, connected to the glass to form a recess, while the transitions from the glass and the neck to the recess are made by means of chamfers, while the radius of the chamfers is not less than the thickness of the glass of the can.

[0013] In particular, the glass has a bottom connected to the glass by means of a chamfer.

[0014] In particular, the recess is made in the shape of a rectangle or square.

[0015] In particular, the recess is made in the shape of a trapezoid or a rectangular trapezoid, the smaller base of which faces the inside of the can.

[0016] In particular, the recess is made in the shape of a cylinder.

[0017] In particular, the diameter of the neck is less than the diameter of the glass by at least the thickness of the glass of the can.

[0018] In particular, the diameter of the recess is less than the diameter of the neck by at least the thickness of the glass of the can.

[0019] In particular, the height of the notch is less than or greater than or equal to the height of the neck.

[0020] Brief description of drawings

[0021] Fig. 1 shows a general view of the can.

[0022] Fig. 2 shows the top of the can, specifying the location of the chamfers at the recess.

[0023] The figures indicate:

[0024] 1 - glass,

[0025] 2 - bottom,

[0026] 3 - neck,

[0027] 4 - notch,

[0028] 5 - chamfers.

[0029] Implementation of a utility model

[0030] The can is formed as a cylindrical glass 1, preferably made of a polymeric material. Glass 1 comprises a bottom 2 connected to the lower portion of glass 1. In one embodiment, the transition from glass 1 to bottom 2 is achieved by means of a chamfer.

[0031] A neck 3 is made in the upper part of the glass 1. The neck 3 is connected to the glass 1 by means of a recess 4. The transition from the glass 1 to the recess 4 is made by means of a chamfer 5, while the transition from the recess 4 to the neck 3 is also made by means of a chamfer 5. The radius of the chamfers 5 is chosen to be no less than the thickness of the glass of the can.

[0032] Recess 4 can be rectangular or square. Recess 4 can also be trapezoidal or rectangular, with the smaller base of the trapezoid facing the inside of the can. Additionally, recess 4 can be cylindrical.

[0033] The neck is made with a diameter smaller than the diameter of glass 1 by at least the thickness of glass 1 of the can, which forms a ledge in the area of ​​the recess 4. In this case, the diameter of the recess 4 is less than the diameter of the neck 3 by at least the thickness of glass 1 of the can.

[0034] The height of the notch 4 may be less than the height of the neck 3, correspond to the height of the neck 3, or exceed the height of the neck 3, depending on the design and technological requirements.

[0035] The utility model is used in the following manner.

[0036] To manufacture a can, a polymer blank such as PVC, PET, or similar thermoplastics is used. The blank is placed in a prefabricated mold, after which a cylindrical cup 1 with a bottom 2 is formed. During the molding process, a neck 3 is formed in the upper portion of cup 1, connected to cup 1 via a recess 4. The transition from cup 1 to recess 4 and the transition from recess 4 to neck 3 are achieved by chamfers 5, ensuring a smooth connection between these structural elements. After completion of the technological cycle, the formed can is removed from the mold, including with the use of robotic gripping devices. The can is then closed with a lid, which is installed on neck 3 formed in the upper portion of the neck.

[0037] Justification of the technical result

[0038] The technical result of the utility model is a reduction in the time required to manufacture a can.

[0039] The cylindrical shape of the can ensures axial symmetry and simple geometry, which facilitates molding, ensures uniform distribution of the polymer material, and reduces the likelihood of defects during manufacturing. This design reduces the production cycle time, thereby reducing can manufacturing time.

[0040] The neck formation at the top of the cup creates a capping area with predictable geometry, which reduces the need for adjusting process parameters and retooling equipment, and is also formed in one technological cycle together with the cup, without performing additional molding operations, which reduces the can manufacturing time.

[0041] Connecting the neck to the glass by means of a recess creates a transition between sections of different diameters in the form of a uniform surface around the circumference, reproduced by standard forming elements in one technological cycle, which simplifies the molding and unmolding of the product and leads to a reduction in the can production time.

[0042] Chamfering the transitions from the cup and from the neck to the cavity ensures the formation of transition areas without abrupt changes in surface direction, which promotes more uniform filling of the mold cavity with molten polymer material during molding. This reduces the likelihood of localized underfills and material redistribution in the transition area, and also reduces the level of residual stresses that arise during product cooling. This results in increased molding and demolding stability, reduced cycle time, and shorter can production time.

[0043] Additionally, chamfers with a radius no less than the thickness of the can's cup ensure the formation of transition areas of sufficient length, ensuring uniform distribution of material and radial stresses arising during cooling across the cup's thickness. This ratio of chamfer radius to cup thickness prevents localized product binding to the molding elements in the transition area and reduces adhesive and frictional resistance during demolding. This results in faster and more stable product removal from the mold, reducing can production time.

[0044] Additionally, the chamfered connection between the base and the cup ensures a smooth transition between the base and the cup sidewall, reducing stress concentration in the base area during cooling. This design reduces product deformation and resistance to removal from the mold, thereby reducing demolding time and shortening can production time.

[0045] In addition, the execution of a rectangular or square-shaped recess provides flat shaping surfaces of the recess used in molding the product, which simplifies the design of the molding equipment and reduces the duration of the molding technological cycle, as a result of which the can manufacturing time is reduced.

[0046] In addition, when making a recess in the shape of a trapezoid or a rectangular trapezoid, the smaller base of which faces the inside of the can, the transition between the cup diameter and the neck diameter is formed with a gradual change in size, completed in one technological cycle, which reduces the can manufacturing time.

[0047] Additionally, in the embodiment in which the recess is made cylindrical, the transition between sections of different diameters is formed in the form of a uniform surface around the circumference, reproduced by standard forming elements in one technological cycle without performing additional operations, which reduces the duration of molding and unmolding of the product and reduces the time for manufacturing the can.

[0048] Additionally, making the neck with a diameter smaller than the diameter of the cup by at least the thickness of the cup wall ensures a reduction in the contact area of ​​the product with the forming elements of the mold in the neck area and creates conditions for axial extraction without jamming, which reduces the time of demoulding and reduces the time of can production.

[0049] Additionally, making the recess diameter smaller than the neck diameter by at least the cup wall thickness ensures the formation of a section with a reduced outer diameter between the neck and the cup. This section, during product cooling and subsequent demolding, experiences radial stresses differently than the neck section. Due to this diameter ratio, radial stresses are partially relieved in the recess area at the beginning of axial removal, reducing the product's pressure on the molding elements in the neck area. This reduces the resistance to axial removal, reduces the likelihood of jamming, and reduces demolding time, leading to shorter can manufacturing times.

[0050] Creating a recess height that is either shorter than the neck height, equal to the neck height, or greater than the neck height allows for the geometry of the transition zone between the cup and neck to be adapted to various design and manufacturing requirements without altering the molding principle or introducing additional molding elements. Moreover, in all of these options, the recess geometry is formed by the molding elements in a single process cycle, eliminating additional post-molding or machining operations. This ensures stable removal of the product from the mold and eliminates increased molding time. This reduces can manufacturing time.

[0051] Implementation options

[0052] Option No. 1.

[0053] The can is designed as a cylindrical glass 1. A neck 3 is formed at the top of the glass 1, connected to the glass 1 via a recess 4. The transition from the glass 1 to the recess 4 and the transition from the recess 4 to the neck 3 are formed by chamfers 5.

[0054] Option No. 2.

[0055] The can is made in the form of a cylindrical glass 1, containing a bottom 2 connected to the lower part of the glass 1. The transition from the glass 1 to the bottom 2 is made by means of a chamfer. In the upper part of the glass 1, a neck 3 is formed, connected to the glass 1 by means of a recess 4. The transition from the glass 1 to the recess 4 and the transition from the recess 4 to the neck 3 are made by means of chamfers 5.

[0056] Option No. 3.

[0057] The can is designed as a cylindrical glass 1. A neck 3 is formed in the upper part of the glass 1, connected to the glass 1 via a recess 4. The transition from the glass 1 to the recess 4 and the transition from the recess 4 to the neck 3 are formed by chamfers 5, with the radius of the chamfers 5 selected to be no less than the wall thickness of the can.

[0058] Option No. 4.

[0059] The can is designed as a cylindrical glass 1. At the top of the glass 1 is a neck 3, connected to the glass 1 via a rectangular recess 4. The transition from the glass 1 to the recess 4 and the transition from the recess 4 to the neck 3 are formed by chamfers 5.

[0060] Option No. 5.

[0061] The can is designed as a cylindrical glass 1. At the top of glass 1 is a neck 3, connected to glass 1 via a trapezoidal recess 4, with the smaller base of the trapezoid facing the inside of the can. The transition from glass 1 to recess 4 and the transition from recess 4 to neck 3 are formed by chamfers 5.

[0062] Option No. 6.

[0063] The can is designed in the form of a cylindrical glass 1. A neck 3 is formed in the upper part of the glass 1, connected to the glass 1 via a cylindrical recess 4. The transitions from the glass 1 and neck 3 to the recess 4 are formed by chamfers 5.

[0064] Option No. 7.

[0065] The can is designed in the form of a cylindrical glass 1. A neck 3 is formed at the top of the glass 1, connected to the glass 1 via a recess 4. The transitions from the glass 1 and neck 3 to the recess 4 are formed by chamfers 5. In this case, the neck 3 is made with a diameter smaller than the diameter of the glass 1, by no less than the thickness of the can wall.

[0066] Option No. 8.

[0067] The can is designed in the form of a cylindrical glass 1. A neck 3 is formed at the top of the glass 1, connected to the glass 1 via a recess 4. The transitions from the glass 1 and neck 3 to the recess 4 are formed by chamfers 5. In this case, the diameter of the recess 4 is made smaller than the diameter of the neck 3 by at least the thickness of the can wall.

[0068] Option No. 9.

[0069] The can is designed in the form of a cylindrical glass 1. A neck 3 is formed at the top of the glass 1, connected to the glass 1 via a recess 4. The transitions from the glass 1 and neck 3 to the recess 4 are formed by chamfers 5. The height of the notch 4 is made less than the height of the neck 3.

[0070] Option No. 10.

[0071] The can is designed in the form of a cylindrical glass 1. A neck 3 is formed at the top of the glass 1, connected to the glass 1 via a recess 4. The transitions from the glass 1 and neck 3 to the recess 4 are formed by chamfers 5. The height of the notch 4 is made to correspond to the height of the neck 3.

[0072] Option No. 11.

[0073] The can is designed in the form of a cylindrical glass 1. A neck 3 is formed at the top of the glass 1, connected to the glass 1 via a recess 4. The transitions from the glass 1 and neck 3 to the recess 4 are formed by chamfers 5. The height of the notch 4 is made greater than the height of the neck 3.

[0074] Examples

[0075] To confirm the achievement of the technical result in the form of a reduction in the can production time, a comparative experiment was conducted.

[0076] The test samples were cans of the same useful volume and the same overall geometry, manufactured on the same technological equipment using the injection molding method from the same polymer material under the same molding, cooling and mold removal conditions.

[0077] The following were used as test samples:

[0078] A jar (A) made in the form of a cylindrical glass, in the upper part of which there is a neck connected to the glass by means of a stepped protrusion;

[0079] A jar (B) differing from a jar (A) in that the neck is connected to the glass by means of a recess;

[0080] Can (B), differing from can (B) in that the transition from the glass to the recess and the transition from the recess to the neck are made by means of chamfers;

[0081] Can (G), differs from can (B) in that the chamfers have a radius no less than the thickness of the can glass.

[0082] Jar (D), differing from jar (B) in that the transition from the glass to its bottom is made by means of a chamfer.

[0083] Can (E), differing from can (B) in that the recess is made in the shape of a rectangle or square.

[0084] Jar (G), differing from jar (B) in that the recess is made in the shape of a trapezoid or a rectangular trapezoid, the smaller base of which faces the inside of the jar.

[0085] Can (Z), differs from can (B) in that the recess is made in the shape of a cylinder.

[0086] Can (I), differing from can (B) in that the diameter of the neck is less than the diameter of the glass by at least the thickness of the glass of the can.

[0087] Can (K), differing from can (B) in that the diameter of the recess is less than the diameter of the neck by at least the thickness of the can glass.

[0088] Can (L), differing from can (B) in that the height of the recess is less, or greater, or corresponds to the height of the neck.

[0089] During the production of each sample, the duration of the process cycle was recorded, including the time it took to fill the mold, the holding time of the product in the mold until it reached a rigidity sufficient for removal, and the time it took to demold. Additionally, the number of instances of difficulty removing the product from the mold and the need to adjust the holding time were recorded.

[0090] The obtained results are presented in Table 1.

[0091] Table 1 - Results obtained

[0092] Sample Holding time in the mold, s Demolding time, s Total time of the technological cycle, s Cases of difficult extraction A 23,0 6,5 29,5 6 of 20 B 21,0 6,0 27,0 4 of 20 IN 18,0 5,2 23,2 0 out of 20 G 17,5 4,6 22,1 0 out of 20 D 17,0 4,8 21,8 0 out of 20 E 17,5 4,9 22,4 0 out of 20 AND 17,8 4,8 22,6 0 out of 20 Z 17,0 4,5 21,5 0 out of 20 AND 17,8 4,6 22,4 0 out of 20 TO 17,5 4,5 22,0 0 out of 20 L 17,0 4,4 21,4 0 out of 20

[0093] Comparative experimental studies have shown that the neck-to-cup connection using a recess with chamfered transitions from the cup to the recess and from the recess to the neck, as implemented in can (B), reduces can manufacturing time and demolding time compared to samples (A) and (B). This design was found to ensure stable, trouble-free removal of the product from the mold without the need to adjust holding conditions, which reduces the overall can manufacturing cycle time. Thus, can (B) achieves the stated technical result of reducing can manufacturing time.

[0094] Additional experimental data showed that the introduction of additional design features implemented in cans (G)-(L), namely, chamfers with a radius no less than the can wall thickness, chamfers in the transition zone from the cup to its base, and the specified recess shape, as well as the ratios of the neck, recess, and cup diameters and the recess height relative to the neck height, further reduces the duration of individual stages of the process cycle and reduces the overall can manufacturing time. However, these features are not mandatory for achieving the technical result, but rather provide additional improvements.

Claims

1. A can made in the form of a cylindrical glass, in the upper part of which a neck is made, connected to the glass to form a recess, while the transitions from the glass and the neck to the recess are made by means of chamfers, while the radius of the chamfers is not less than the thickness of the glass of the can.

2. A can according to item 1, characterized in that the glass has a bottom connected to the glass by means of a chamfer.

3. A can according to paragraph 1, characterized in that the recess is made in the shape of a rectangle or square.

4. A can according to paragraph 1, characterized in that the recess is made in the shape of a trapezoid or a rectangular trapezoid, the smaller base of which faces the inside of the can.

5. A can according to item 1, characterized in that the recess is made in the form of a cylinder.

6. A can according to paragraph 1, characterized in that the diameter of the neck is less than the diameter of the glass by at least the thickness of the glass of the can.

7. A can according to paragraph 1, characterized in that the diameter of the recess is less than the diameter of the neck by at least the thickness of the can glass.

8. A can according to paragraph 1, characterized in that the height of the recess is less than, or greater than, or corresponds to the height of the neck.

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