CN219838183U

CN219838183U - Blow molding mold for combined container easy to demould

Info

Publication number: CN219838183U
Application number: CN202223230357.8U
Authority: CN
Inventors: 汤疆平
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-03
Filing date: 2022-12-03
Publication date: 2023-10-17
Anticipated expiration: 2032-12-03

Abstract

The utility model relates to a blow molding mould for a combined container easy to demould, which comprises a left half mould, a right half mould and a bottom mould, wherein the left half mould, the right half mould and the bottom mould enclose the shape of the container. Through set up the through-hole at the die block, can blow in gas and lubricant in to the mould, the gas of blowing in can eliminate the negative pressure effectively, simultaneously, can utilize the gas of blowing in to bring into the lubricant, can do benefit to die block and combination container and break away from smoothly, improves the yields.

Description

Blow molding mold for combined container easy to demould

Technical Field

The utility model relates to a mold, in particular to a blow molding mold of an easily-demoulded combined container.

Background

Aiming at the problem that the connecting mode of the split type container (bottle) in the prior art has defects, the inventor submits utility model patents CN202120984190.0 and CN202120985463.3, improves the connecting structure of the combined container, and proposes that a groove part is arranged at the bottom of the combined container, the cross section of the groove part is a regular polyhedron or a circle, the cross section of a cover body is a circle or a regular polyhedron, and the difference in shape and size of the cover body and the groove part of the combined container is utilized to enable the groove part to deform after the cover body is inserted into the groove part, so that rebound stress is generated, and the cover body is wrapped.

In practice, the combined container may be in the form of a plastic water bottle such as a beverage bottle, a mineral water bottle, etc. The inventors found that, when a plastic water bottle having the groove portion is produced by a blow molding method, if a mold shape matching the shape of the groove portion is directly provided on a bottom mold, the failure rate at the time of demolding is extremely high, and it is difficult to form the molded groove portion. Therefore, the inventor has also filed an utility model patent CN202120984655.2 to improve the mold structure to overcome the problem of difficult demolding.

Further, the inventors have found that some demolding problems remain in actual production. Due to the fact that the depth of the groove part is large, the structure of the groove part is complex, the initial strength is insufficient, large negative pressure exists between the bottle bottom and the bottom die, and the like, a certain failure rate still exists during demolding, and production cost is greatly increased.

Chinese patent No. CN200920191331.2 discloses a bottom die structure for bottle blowing machine, which is provided with a thimble assembly between the cylinder and the bottom die mounting structure for conveniently pushing down the bottle, and the bottle can be quickly and timely demoulded by arranging the thimble. However, the device needs to be provided with mechanical components such as a cylinder, a thimble and the like, and has a complex structure and high failure rate.

The Chinese patent No. 201920191494.4 discloses a bottle blowing mould capable of being rapidly formed, a cover plate is provided with a plurality of air columns, the air columns are communicated with through holes, the through holes are of an opening structure at the top of a mould core, a boss of a bottom mould is used for driving a plastic bottle, and the air columns and the through holes are combined, so that the air pressure in the mould core can be regulated, and the demoulding operation of the plastic bottle is facilitated. However, the through hole is positioned at the top of the mold core, so that the air pressure can be simply regulated, and the through hole is matched with the bottom mold boss, so that the mold has limitation.

In this regard, the inventors have further solved the above-mentioned problems by improving the structure of the mold.

Disclosure of Invention

The utility model aims to provide a blow molding mold for a combined container easy to demould, which can solve the technical problems that the combined container is difficult to demould and the demould failure rate is high.

In order to solve the problems in the prior art, the utility model provides a blow molding mold for a combined container easy to demould, which comprises a left half mold, a right half mold and a bottom mold, wherein the left half mold, the right half mold and the bottom mold enclose the shape of the container.

Preferably, the number of the through holes is 1.

Preferably, the through hole is positioned at the center of the inner surface of the bottom die.

Preferably, the number of the through holes is a plurality. Blowing and lubricant delivery can be achieved more uniformly.

Preferably, the number of the through holes is 3-9.

Preferably, the through holes are uniformly distributed on the inner surface of the bottom die.

Preferably, the cross section of the through hole is round,

preferably, the diameter of the through hole is 0.1mm-2mm. The diameter of the through holes can be specifically adjusted according to the number of the through holes, the blowing air pressure and other factors.

Preferably, the combined container is a combined plastic water bottle.

Preferably, the material of the mold is aluminum alloy, copper alloy, iron or steel.

The utility model has the characteristics and beneficial effects that:

through set up the through-hole at die block internal surface, can blow in gas and lubricant to the mould in, the gas of blowing in can eliminate the negative pressure effectively, simultaneously, can utilize the gas of blowing in to bring into the lubricant, can do benefit to die block and combination container and break away from smoothly, improved the yields of combination container production greatly.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of the present utility model;

FIG. 2 is a schematic top view of the bottom mold of embodiment 2.

List of reference numerals: 1. a left half mold; 2. a right half mold; 3. a bottom die; 4. and a through hole.

Detailed Description

In order that the utility model may be more efficiently carried out in accordance with the intended purpose and function, a further description of the structure, features and embodiments of the utility model will be provided with reference to the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

As shown in fig. 1, the combined container is a combined plastic water bottle, and comprises a left half die 1, a right half die 2 and a bottom die 3, wherein the left half die 1, the right half die 2 and the bottom die 3 are enclosed to form a bottle body, a through hole 4 is formed in the inner surface of the bottom die 3, and the through hole 4 is communicated with an air blowing device and a lubricant supply device (not shown).

The number of the through holes 4 is 1, and the through holes are positioned at the center of the inner surface of the bottom die 3. The cross section of the through hole 4 is circular, and the diameter is 1mm.

The die is made of aluminum alloy.

It can be understood that the mold of the present utility model further includes conventional cooling, exhausting, etc., which are not described herein.

When the blow molding preparation demolding is completed, the blowing device and the lubricant supply device start to work, gas and lubricant are blown into the mold through the through holes 4, the blown gas can effectively eliminate negative pressure, meanwhile, the blown gas can be utilized to bring the lubricant, the consumption and the supply frequency of the lubricant can be adjusted according to the needs, and the lubricant is purposefully supplemented in the inner area of the bottom mold, so that the bottom mold and the bottle body can be smoothly separated.

The lubricant can be a common external lubricant, and the chemical structure of the lubricant generally comprises nonpolar long-chain aliphatic hydrocarbon and a small amount of polar groups, and is mostly higher fatty acid, fatty acid amide and paraffin.

Example 2

As shown in fig. 1 to 2, unlike in embodiment 1, in order to make the blown-in gas and lubricant more uniform, the number of the through holes 4 is set to 3, which are uniformly distributed at the center position of the inner surface of the bottom die 3. The 3 through holes 4 are collected in the same passage and then communicate with an external blowing device and a lubricant supply device (not shown).

The cross section of the through hole 4 is circular, and the diameter is 0.2mm.

The die is made of copper alloy.

The utility model is suitable for forming various combined containers, for example, forming the combined plastic water bottle, because the butt joint part of the bottom of the combined plastic water bottle is provided with the groove, the groove has large depth and complex shape, the failure rate during demolding is higher, the production cost is higher, and the utility model is the pain and difficulty of popularization and application of the combined plastic water bottle and industrial production. After the technology is adopted, the yield of products can be greatly improved. The inventor finds that the technology is particularly applied to the combined plastic water bottle, the yield can be greatly improved to more than 98%, and the method lays a road for wide industrial production. It will be appreciated that the present utility model is equally applicable to the formation of other blow molded containers having a relatively large bottom depth and a relatively complex shape.

The utility model has been described above with reference to preferred embodiments, but the scope of the utility model is not limited thereto, various modifications may be made thereto and equivalents may be substituted for elements thereof without structural conflict, technical features mentioned in the various embodiments may be combined in any way, and any reference signs in the claims shall not be construed as limiting the claims concerned, the embodiments shall be construed as exemplary and non-limiting in all respects. Therefore, any and all technical solutions falling within the scope of the claims are within the scope of the present utility model.

Claims

1. The utility model provides an easy drawing of patterns combination container blow molding mould, includes left half mould, right half mould, die block, left side half mould, right half mould, die block enclose the shape of synthetic container, and combination container bottom butt joint department has the recess, a serial communication port, the through-hole is seted up with blowing device and lubricant supply arrangement intercommunication, the quantity of through-hole is a plurality of, through-hole evenly distributed is at die block internal surface.

2. The blow molding die for a combined container easy to release according to claim 1, wherein the number of the through holes is 3-9.

3. The blow molding die for a composite container according to claim 1, wherein said through hole has a circular cross section.

4. The blow molding die for a combined container capable of easily demolding as claimed in claim 1, wherein the diameter of the through hole is 0.1mm-2mm.

5. A blow-molding die for a composite container according to any one of claims 1 to 4, wherein the composite container is a composite plastic water bottle.

6. A blow-molded container in combination with an easy-to-release mold according to any one of claims 1 to 4, wherein the mold is made of aluminum alloy, copper alloy, iron or steel.