CN212603333U - Bottle blowing mold, bottle blowing machine and plastic bottle - Google Patents

Abstract

The utility model discloses a bottle blowing mold, bottle blowing machine and plastic bottle, bottle blowing mold have the die cavity, form body, bottle shoulder, handle and bottleneck in the die cavity after the bottle embryo blowing is accomplished, the bottle shoulder is located between body and the bottleneck, the one end and the bottle shoulder of handle are connected, the other end of handle also with the bottle shoulder be connected or be connected with the bottleneck, be equipped with first protruding muscle one at least on the chamber wall of die cavity, first protruding muscle makes and forms non-closed or cyclic annular closed first recess on the body. First protruding muscle plays the effect that the stock at restriction body position removed to bottle shoulder and handle at the blowing in-process, prevents that bottle shoulder department from producing the fold and avoiding the handle to take place to warp, has promoted the blowing quality of bottle embryo. Adopt the utility model discloses the plastic bottle of bottle blowing mold preparation is formed by blowing from the bottle embryo of taking the handle, owing to do not have the handle that needs the independent equipment, has simplified production technology, has improved production efficiency, has reduced manufacturing cost, has avoided taking place the condition that the handle drops.

Description

Bottle blowing mold, bottle blowing machine and plastic bottle

Technical Field

The utility model relates to a bottle blowing technical field especially relates to a bottle blowing mould, bottle blowing machine and plastic bottle.

Background

At present, plastic feeding bottles and beverage bottles with handles in the market are mainly divided into two types, one type is bottles made of HDPE materials with handles, and the other type is bottles made of PET materials with rear handles. The HDPE bottle with the handle has the defects of incomplete sealing, easy breakage of a bottle body, uncontrollable bottle capacity and the like; although the bottle made of another PET material has the advantages of good sealing performance, solid bottle body, high oxygen resistance, transparency, easiness in observation and the like compared with the bottle made of HDPE material, the bottle made of the PET material needs to be provided with a rear handle at present, the handle in the bottle made of the PET material with the rear handle needs to be produced and installed by specific equipment, and the rear handle is easy to fall off after installation. The above reasons have prompted the industry to expect that bottles made of PET with handles can replace the bottles made of PET with rear handles on the market.

In order to ensure that the position of the handle is unchanged and the shape of the handle is intact, the blank at the handle part of the bottle blank can be stretched only in the transverse direction and cannot be stretched in the longitudinal direction. Therefore, the technical treatment must be carried out on the handle part in the bottle blank heating process, and the deformation caused by the softening of the handle part after the temperature is overhigh in the bottle blowing process is prevented, so that the bottle blowing failure is further caused. The PET bottle with the handle is manufactured by adopting a two-step bottle blowing process, namely, a bottle blank is firstly formed by injection molding, and then the bottle blank is blown into the bottle in a bottle blowing mold. Since the bottle preform with the handle has more parts than the conventional bottle preform, there are problems that have not occurred in the conventional bottle preform blowing process during the bottle preform blowing process. The temperature of the handle part is lower after the bottle blank is heated, the temperature of the bottle body part is higher, so that the blank of the bottle body part is softer than that of the handle part, the blank of the bottle body part firstly expands and fills the bottle body part of the mold in the expanding process of stretching and blowing the bottle blank, and the handle part of the bottle blank is not adhered to the inner wall of the mold. When the blowing is continued, the blank of the bottle body part pushes the handle part to the inner wall of the mould under the action of the compressed air, and finally the blank and the blank of the handle part are attached to the mould under the action of the compressed air. After the bottle blank is blown, the bottle shoulder opposite to the handle is easy to form wrinkles, and the lower end of the handle is easy to move upwards, so that the quality of the bottle is unqualified.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bottle blowing mould and bottle blowing machine can make and form non-closed or cyclic annular closed first recess on the body, prevents that shoulder department from forming the fold and avoiding the handle to warp.

Another object of the utility model is to provide a plastic bottle, it is formed by blowing from the bottle embryo of taking the handle, and production efficiency is high, with low costs, can avoid taking place the condition that the handle drops.

To achieve the purpose, the utility model adopts the following technical proposal:

the bottle blowing mold is provided with a mold cavity, a bottle body, a bottle shoulder, a handle and a bottle neck are formed in the mold cavity after bottle blanks are blown, the bottle shoulder is located between the bottle body and the bottle neck, one end of the handle is connected with the bottle shoulder, the other end of the handle is also connected with the bottle shoulder or connected with the bottle neck, at least one first convex rib is arranged on the cavity wall of the mold cavity, and a first non-closed or annular closed groove is formed in the bottle body due to the first convex rib.

As an optimized proposal of the utility model, a second convex rib is arranged on the cavity wall, and the second convex rib makes the bottle shoulder and the juncture of the bottle body form a second groove.

As an optimized scheme of the utility model, first protruding muscle sets up on a plane or first protruding muscle is the wave setting and is in on the chamber wall.

As a preferred scheme of the utility model, two, each are no less than to the quantity of first protruding muscle the mutual interval of first protruding muscle sets up or the part is connected.

As an optimized proposal of the utility model, at least one third convex rib is arranged on the cavity wall, and the third convex rib makes the non-closed third groove is formed on the bottle shoulder.

As a preferred aspect of the present invention, the mold cavity includes a first recessed area, and the first recessed area makes a convex step structure formed on the bottleneck.

As a preferred aspect of the present invention, the mold cavity includes a second recessed area for accommodating the handle.

On the other hand, a bottle blowing machine is provided, which comprises the bottle blowing mold according to any technical scheme.

In addition, the plastic bottle is manufactured by the bottle blowing machine.

As an optimized proposal of the utility model, the plastic bottle is made of PET.

The utility model has the advantages that:

the utility model discloses a bottle blowing mould is equipped with at least one first protruding muscle on the chamber wall of die cavity, and first protruding muscle makes and forms cyclic annular closed or non-closed first recess on the body, and the stock at first protruding muscle restriction body position removes to bottle shoulder and handle position at the blowing in-process, prevents that bottle shoulder department from producing the fold and avoiding the handle to take place to warp, has promoted the blowing quality of bottle embryo. Adopt the utility model discloses a plastic bottle of bottle blowing mold preparation is formed by blowing from the bottle embryo of taking the handle, owing to do not have the handle that needs the independent equipment, has simplified production technology, has improved production efficiency, has reduced manufacturing cost, has avoided taking place the condition that the handle drops.

Drawings

FIG. 1 is a schematic representation of a bottle preform with a handle prior to blowing using a conventional mold;

FIG. 2 is a schematic representation of a conventional mold for blowing a preform with a handle;

FIG. 3 is a schematic view of a bottle preform with a handle blown using a conventional mold;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 3;

FIG. 6 is a schematic view of a bottle blowing mold according to an embodiment of the present invention before blowing a bottle preform with a handle;

FIG. 7 is a schematic view of a bottle blowing mold according to an embodiment of the present invention in a process of blowing a bottle preform with a handle;

FIG. 8 is a schematic view of the bottle blowing mold according to the embodiment of the present invention, when the blowing of the bottle preform with the handle is nearly completed;

fig. 9 is a schematic view of the bottle blowing mold according to the embodiment of the present invention after blowing a bottle blank with a handle;

FIG. 10 is an enlarged view at C of FIG. 9;

fig. 11 is a schematic perspective view of a plastic bottle according to an embodiment of the present invention;

fig. 12 is a schematic view of a mold cavity structure of a bottle blowing mold according to another embodiment of the present invention;

FIG. 13 is an enlarged view at D of FIG. 12;

FIG. 14 is an enlarged view at E in FIG. 12;

FIG. 15 is a schematic perspective view of a plastic bottle blown using the bottle blowing mold of FIG. 12;

fig. 16 is a schematic view of a mold cavity structure of a bottle blowing mold according to another embodiment of the present invention;

fig. 17 is a schematic perspective view of a plastic bottle blown using the bottle blowing mold of fig. 16;

fig. 18 is a schematic view of a mold cavity structure of a bottle blowing mold according to yet another embodiment of the present invention;

FIG. 19 is a schematic perspective view of a plastic bottle blown using the bottle blowing mold of FIG. 18;

fig. 20 is a schematic view of a mold cavity structure of a bottle blowing mold according to another embodiment of the present invention;

FIG. 21 is a schematic perspective view of a plastic bottle blown using the bottle blowing mold of FIG. 20;

fig. 22 is a schematic perspective view of a bottle blowing mold according to an embodiment of the present invention.

In the figure:

1', a conventional die; 1. a bottle blowing mold; 10. a mold cavity; 11. a left half mold; 12. a right half mold; 13. bottom die; 101. a first rib; 102. a second rib; 103. a third rib; 104. a first recessed region; 105. a second recessed region; 100. bottle embryo; 100', plastic bottles; 110. a bottle body; 120. a bottle shoulder; 1201. a first fold; 1202. a second fold; 130. a handle; 140. a bottleneck; 200. a stretch rod; 1100. a first groove; 1200. a second groove; 1300. a third groove; 1400. and (3) a step structure.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the word "over" a first feature or feature in a second feature may include the word "over" or "over" the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The two-step bottle blowing process requires first manufacturing a bottle blank 100, then blowing the bottle blank 100 with a specific mold, as shown in fig. 1 to 5, when blowing the bottle blank 100 with a handle 130 by using a conventional mold 1', because the handle 130 is added, during the stretching and expanding process of the bottle blank 100, the blank at the portion of the bottle body 110 is expanded and filled in the lower portion of the mold cavity 10, at this time, the portion of the handle 130 of the bottle blank 100 is not yet attached to the cavity wall of the mold cavity 10, as the blowing process progresses, the blank at the portion of the bottle body 110 pushes the handle 130 to the cavity wall of the mold cavity 10 under the action of compressed air, and finally, along with the handle 130, is attached to the cavity wall of the mold cavity 10 under the action of compressed air, after the blowing process, a first wrinkle 1201 (as shown in fig. 4) is likely to occur on the bottle shoulder 120, the lower end of the handle 130 is also upwardly deviated, so that the handle 130 is deformed (as shown in fig. 5, the dotted line shows the correct position of the lower end of the handle 130), thereby causing quality defects.

As shown in fig. 6 to 11, the bottle blowing mold 1 of the present embodiment has a mold cavity 10, a bottle body 110, a bottle shoulder 120, a handle 130 and a bottle neck 140 are formed in the mold cavity 10 after a bottle blank 100 is blown, the bottle shoulder 120 is located between the bottle body 110 and the bottle neck 140, one end of the handle 130 is connected to the bottle shoulder 120, the other end of the handle 130 is connected to the bottle neck 140, both ends of the handle 130 can also be connected to the bottle shoulder 120, at least one first rib 101 is disposed on a cavity wall of the mold cavity 10, and the first rib 101 forms a first non-closed or annularly closed groove 1100 on the bottle body 110.

The bottle blowing mold 1 of the embodiment is provided with at least one first convex rib 101 on the cavity wall of the mold cavity 10, the first convex rib 101 enables the non-closed or annular closed first groove 1100 to be formed on the bottle body 110, the first convex rib 101 limits the blank at the position of the bottle body 110 to move towards the bottle shoulder 120 and the handle 130 in the blowing process, the first fold 1201 at the position of the bottle shoulder 120 is prevented, the handle 130 is prevented from deforming, and the blowing quality of the bottle blank 100 is improved. The first rib 101 is preferably disposed near the shoulder 120 to achieve a better effect of limiting the movement of the blank. In addition, first recess 1100 still plays the effect of reinforcing body 110 structural strength, can obtain a plurality of first recesses 1100 through setting up the first protruding muscle 101 of multichannel to promote body 110's structural strength greatly, make its non-deformable.

Preferably, the cavity wall of the mold cavity 10 is further provided with a second rib 102, and the second rib 102 forms a second groove 1200 at the interface between the shoulder 120 and the body 110. The second rib 102 also has the effect of limiting the blank at the position of the bottle body 110 to move towards the bottle shoulder 120 and the handle 130 during the blowing process, so as to further improve the blowing quality of the bottle blank 100.

Further, the first ribs 101 are arranged on a plane or the first ribs 101 are arranged on the cavity wall in a wave shape, and the specific shape of the first ribs 101 can be flexibly selected according to actual needs. As shown in fig. 12 and 16, the first rib 101 has a closed ring shape or a non-closed arc shape, and the first rib 101 is disposed on a plane such that the height of the first groove 1100 is the same throughout. As shown in fig. 18 and 19, the first rib 101 has a wave shape, so that the first groove 1100 also has a wave shape, and the first groove 1100 is not located at the same height.

When the number of the first ribs 101 is greater than two, the first ribs 101 may be disposed to be spaced apart from each other, or may be partially connected together. As shown in fig. 20 and 21, the first ribs 101 are partially connected, so that a part of the first grooves 1100 are overlapped.

As shown in fig. 12 to 15, preferably, the cavity wall of the mold cavity 10 is further provided with at least one third rib 103, and the third rib 103 forms a non-closed third groove 1300 on the shoulder 120. Fig. 6-9 illustrate an exemplary process for blowing the bottle blank 100, as shown in fig. 10, after the blowing process, a second fold 1202 is easily formed at the junction between the shoulder 120 and the neck 140. By providing the third rib 103, a third groove 1300 can be formed on the shoulder 120, and the third rib 103 restricts the blank of the shoulder 120 from moving toward the neck 140 during the blowing process, so as to prevent a second wrinkle 1202 from being formed at the joint of the shoulder 120 and the neck 140.

As shown in fig. 12, 14 and 15, the mold cavity 10 preferably includes a first recessed area 104, the first recessed area 104 forming a raised step structure 1400 on the bottle neck 140. The step 1400 enables more stock to be received at the neck 140, thereby preventing a second fold 1202 from being formed at the junction of the shoulder 120 and the neck 140.

As shown in fig. 15, preferably, mold cavity 10 includes a second recessed area 105, second recessed area 105 being adapted to receive handle 130. The shape of the second recessed area 105 matches the shape of the handle 130 so that the handle 130 can be stopped at the correct position during the blowing process of the bottle preform 100.

Preferably, as shown in fig. 22, the bottle blowing mold 1 includes a left mold half 11, a right mold half 12 and a bottom mold 13, and the left mold half 11, the right mold half 12 and the bottom mold 13 are assembled to form a mold cavity 10. Referring to fig. 6 to 9, the blowing step of the bottle blank 100 is: firstly, the left half mold 11 and the right half mold 12 are separated, then the heated bottle blank 100 is placed between the left half mold 11 and the right half mold 12, then the left half mold 11, the right half mold 12 and the bottom mold 13 are folded, the stretching rod 200 is inserted into the bottle blank 100 from the blank opening to longitudinally stretch the bottle blank 100, meanwhile, compressed air is blown into the bottle blank 100 from the blank opening to transversely stretch the bottle blank 100, and after the bottle blank 100 is blown, the bottle blowing mold 1 is opened.

The embodiment of the utility model also provides a bottle blowing machine, include the bottle blowing mould 1 of any above-mentioned embodiment, therefore make this kind of bottle blowing machine can carry out high-quality blowing to the bottle embryo 100 of taking handle 130 certainly.

As shown in fig. 11, 15, 17, 19 and 21, the embodiment of the present invention further provides a plastic bottle 100 'manufactured by the above bottle blowing machine, and the plastic bottle 100' has a handle 130 instead of a form of installing an independent handle after blowing is completed, so that the production process is simplified, the production cost is reduced, and the problem that the independent handle falls off is not worried.

Preferably, the plastic bottle 100 'is made of PET, so that the plastic bottle 100' has the advantages of good sealing performance, firm bottle body, high oxygen barrier performance, transparency, easy observation and the like.

As preferred embodiments of the present invention, in the description of the present specification, reference to the description of the term "preferred" or the like means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only used to illustrate the detailed embodiments of the present invention, and the present invention is not limited to the above detailed embodiments, i.e. the present invention must not be implemented depending on the detailed embodiments. It should be clear to those skilled in the art that any improvement of the present invention, to the equivalent replacement of each raw material of the present invention, the addition of auxiliary components, the selection of specific modes, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims (10)

1. A bottle blowing mold is characterized by comprising a mold cavity, a bottle body, a bottle shoulder, a handle and a bottle neck are formed in the mold cavity after bottle blanks are blown, the bottle shoulder is located between the bottle body and the bottle neck, one end of the handle is connected with the bottle shoulder, the other end of the handle is also connected with the bottle shoulder or connected with the bottle neck, at least one first convex rib is arranged on the cavity wall of the mold cavity, and a first non-closed or annular closed groove is formed in the bottle body due to the first convex rib.

2. The bottle blowing mold of claim 1, wherein the cavity wall is further provided with a second rib, and the second rib forms a second groove at the junction of the bottle shoulder and the bottle body.

3. The bottle blowing mold of claim 1, wherein the first rib is disposed on a plane or the first rib is disposed on the cavity wall in a wave shape.

4. The bottle blowing mold of claim 1, wherein the number of the first ribs is not less than two, and the first ribs are arranged at intervals or partially connected with each other.

5. The bottle blowing mold of claim 1, wherein the cavity wall is further provided with at least one third rib, and the third rib forms a non-closed third groove on the shoulder.

6. The bottle blowing mold of claim 1 wherein the mold cavity comprises a first recessed area that forms a raised step structure on the bottle neck.

7. A bottle blowing mold as claimed in claim 1 wherein the mold cavity includes a second recessed area for receiving the handle.

8. A bottle blowing machine, characterized in that, it comprises the bottle blowing mold of any claim 1 to 7.

9. A plastic bottle produced by the bottle blowing machine of claim 8.

10. The plastic bottle of claim 9, wherein said plastic bottle is PET.

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