Bottle blank of gland type disposable drinking water bucket

Abstract

The utility model belongs to the field of plastic bottle blanks, and particularly relates to a bottle blank of a gland type disposable drinking water bucket, which comprises a blank body, the blank body comprises a bottle opening part, a bottle body part and a bottle bottom part which are integrally formed, a bending part is arranged at the connecting position of the bottle opening part and the bottle body part, the bending part inclines outwards, and the bottle opening part is connected with the bottle bottom part. The wall thickness of the bending part is greater than that of the bottle body part; the water bucket is simple in structure and convenient to produce, the thickness distribution of the joint of the bottle opening part and the bottle body part is more uniform, and the overall strength of the water bucket can be improved.

Description

Technical Field

[0001] The utility model relates to the field of plastic bottle embryos, in particular to a bottle embryo of a press-cover type disposable drinking water bucket. Background Art

[0002] At present, during the blow molding process of the preform, hot air is blown into the bottle mouth of the preform. During the blowing process, the part near the bottle mouth is first quickly heated and softened and molten, and the connection between the bottle neck and the bottle body will gradually stretch after blowing, causing the plastic at the bottle mouth and the bottle neck to easily sag toward the bottle body. Then, even if the preform is continuously blown, the outer surface of the bottle abuts against the inner surface of the mold cavity, so that the bottle is stretched open by the air pressure. However, due to the depression at the connection between the bottle neck and the bottle body, the connection between the bottle neck and the bottle body may still be uneven during the stretching process, and the thickness of the final product at the connection between the bottle neck and the bottle body is relatively thin, resulting in defective bottles.

[0003] Chinese patent publication number CN115194978A discloses that when the connection between the neck and the body of a PET preform is stretched under air pressure, the molten blocking block can effectively fill the depression at the connection between the neck and the body, making the thickness distribution at the connection between the neck and the body more uniform. By setting an arc-shaped blocking block, it is beneficial to the bending of the connection between the neck and the body during the stretching process, which is in line with the bending amplitude of the bottle, so that the blow molding effect of the bottle is better.

[0004] However, the production of the bottle embryo of the above technical solution is difficult, resulting in increased production costs; therefore, in order to solve the above problem, a bottle embryo of a press-cap type disposable drinking water bucket is proposed. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised in the background technology, the utility model provides a bottle embryo of a press-cover type disposable drinking water bucket.

[0006] The technical solution adopted by the utility model to solve its technical problem is: the bottle embryo of a press-cap type disposable drinking water bucket described in the utility model includes an embryo body, and the embryo body includes a bottle mouth, a bottle body and a bottle bottom that are integrally formed. A bending portion is provided at the connection position of the bottle mouth and the bottle body, and the bending portion is inclined outward, and the wall thickness of the bending portion is greater than the wall thickness of the bottle body.

[0007] Preferably, a second blocking ring is provided above the bending portion, and the second blocking ring is integrally formed with the bottle mouth portion.

[0008] Preferably, a blocking ring 1 is arranged on the outer wall of the bottle mouth and above the blocking ring 2.

[0009] Preferably, a limiting ring is provided on the outer wall of the bottle mouth and above the first blocking ring.

[0010] Preferably, a plurality of groups of the limiting rings are arranged in parallel, and the outer side walls of the limiting rings are arranged in a semicircular shape.

[0011] Preferably, a chamfer is provided at a connection position between the outer side of the top of the bending portion and the second blocking ring.

[0012] Preferably, the bottom side wall thickness of the bottle bottom is greater than the wall thickness of the bottle body.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model provides a bending portion at the connection position between the bottle mouth and the bottle body, and the wall thickness of the bending portion is greater than that of the bottle body. During blow molding, the bending portion will be deformed synchronously. During the blow molding process, the embryo body will melt under the action of hot air, and the bending portion will be stretched under the action of air pressure, thereby effectively filling the depression at the connection between the bottle mouth and the bottle body, thereby making the thickness distribution at the connection between the bottle mouth and the bottle body more uniform.

[0015] 2. The utility model thickens the sides of the bottom of the bottle. When the bottom of the bottle is blown and expanded, the thickness of the bottom of the bucket is greater than the thickness of the bottle body, thereby making the bottom more wear-resistant and avoiding damage to the bottom of the bucket due to wear during placement, resulting in leakage and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the external structure of the first embodiment;

[0018] Figure 2 is a cross-sectional view of embodiment 1;

[0019] Figure 3 For Example 1 Figure 2 A schematic diagram of the enlarged structure in the middle.

[0020] In the figure: 1, embryo; 2, bottle mouth; 3, limiting ring; 4, blocking ring 1; 5, blocking ring 2; 6, bending part; 7, bottle body; 8, bottle bottom; 9, chamfered corners. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1-3 As shown, a bottle embryo of a gland-type disposable drinking water bucket comprises an embryo 1, wherein the embryo 1 comprises a bottle mouth 2, a bottle body 7 and a bottle bottom 8 which are integrally formed, and a bending portion 6 is provided at the connection position between the bottle mouth 2 and the bottle body 7, wherein the bending portion 6 is inclined outward, and the wall thickness of the bending portion 6 is greater than the wall thickness of the bottle body 7; during operation, the embryo 1 is placed in a mold of a blow molding machine for heating and blow molding, and during blow molding, the bending portion 6 will be deformed synchronously, and before blow molding, the wall thickness of the bottle mouth 2 and the bottle body 7 are the same, but the wall thickness of the bending portion 6 is thicker, and during the blow molding process, the embryo 1 is melted under the action of hot air, and the bending portion 6 is stretched under the action of air pressure, thereby being able to effectively fill the depression at the connection between the bottle mouth 2 and the bottle body 7, thereby making the thickness distribution at the connection between the bottle mouth 2 and the bottle body 7 more uniform.

[0024] A blocking ring 2 5 is provided above the bending portion 6, and the blocking ring 2 5 is integrally formed with the bottle mouth portion 2; when working, the blocking ring 2 5 is clamped in the limiting groove of the blow molding machine to fix the position of the embryo 1, so that the embryo 1 is more stable during the blow molding process.

[0025] A blocking ring 1 4 is provided on the outer wall of the bottle mouth 2 and above the blocking ring 2 5; when working, the embryo 1 is further limited by the blocking ring 1 4, so that the embryo 1 is placed more stably; in addition, a gap is provided between the blocking ring 1 4 and the blocking ring 2 5, so that after the water bucket is formed, a lifting ring can be installed between the blocking ring 1 4 and the blocking ring 2 5, thereby facilitating the lifting of the water bucket and making it more convenient to use.

[0026] A limiting ring 3 is arranged on the outer wall of the bottle mouth 2 and above the blocking ring 4; when working, the limiting ring 3 is adapted to the top cover of the drinking water bucket so that the top cover can be pressed and installed on the outer side of the top of the bottle mouth 2.

[0027] The limiting rings 3 are arranged in parallel in multiple groups, and the outer side walls of the limiting rings 3 are arranged in a semicircular shape. When working, multiple groups of limiting rings 3 are arranged so that the top cover can be stably clamped on the outer side of the top of the bottle mouth 2. The semicircular structure makes the installation of the top cover more convenient.

[0028] A chamfer 9 is provided at the connection position between the outer side of the top of the bending portion 6 and the blocking ring 2 5; during operation, the chamfer 9 is provided to prevent stress concentration from occurring at the connection between the bottle body 7 and the blocking ring 2 5, resulting in fracture at the connection between the bottle body 7 and the blocking ring 2 5.

[0029] Embodiment 2

[0030] See also Figure 2 As shown, compared with Example 1, as another implementation of the utility model, the bottom side wall thickness of the bottle bottom 8 is greater than the wall thickness of the bottle body 7; during operation, the bottle bottom 8 will be concave inward after being finally formed under the limitation of the mold, so by thickening the side of the bottle bottom 8, when the bottle bottom 8 is blow-molded and expanded, the thickness of the bottom of the bucket is greater than the thickness of the bottle body, so that the bottom can be made more wear-resistant, avoiding the bottom of the bucket being damaged due to wear during placement, resulting in leakage and other problems.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A bottle embryo of a disposable drinking water barrel with a press cap, characterized by: The invention comprises an embryo (1), wherein the embryo (1) comprises a bottle mouth (2), a bottle body (7) and a bottle bottom (8) which are integrally formed, and a bending portion (6) is provided at the connection position between the bottle mouth (2) and the bottle body (7), wherein the bending portion (6) is inclined outward, and the wall thickness of the bending portion (6) is greater than the wall thickness of the bottle body (7).

2. The preform of a disposable drinking water bucket of a gland type according to claim 1, characterized in that: A second blocking ring (5) is provided above the bending portion (6), and the second blocking ring (5) is integrally formed with the bottle mouth portion (2).

3. The preform of a disposable drinking water bucket of a gland type according to claim 2, characterized in that: A blocking ring 1 (4) is arranged on the outer wall of the bottle mouth (2) and above the blocking ring 2 (5).

4. The preform of a disposable drinking water bucket of a press-cover type according to claim 3, characterized in that: A limiting ring (3) is arranged on the outer wall of the bottle mouth (2) and above the blocking ring 1 (4).

5. The preform of a disposable drinking water bucket of a gland type according to claim 4, characterized in that: A plurality of groups of the limiting rings (3) are arranged in parallel, and the outer side walls of the limiting rings (3) are arranged in a semicircular shape.

6. The preform of a disposable drinking water bucket of a press-cover type according to claim 5, characterized in that: A chamfer (9) is provided at the connection position between the outer side of the top of the bending portion (6) and the second blocking ring (5).

7. The preform of a disposable drinking water bucket of a press-cover type according to claim 6, characterized in that: The wall thickness of the bottom side of the bottle bottom (8) is greater than the wall thickness of the bottle body (7).

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