阅读说明：本技术 分段纸浆瓶瓶坯的生产工艺 (Production process of segmented pulp bottle blank ) 是由 王楷 陈维民 万凌 于 2020-05-21 设计创作，主要内容包括：本发明涉及分段纸浆瓶瓶坯的生产工艺,包括以下步骤：S1、分别制作瓶上部坯件和瓶底部坯件,其中,瓶底部坯件的内壁上具有内环状台阶；S2、将瓶上部坯件放入凹台加工模具内,在瓶上部坯件的外壁上加工能够与瓶上部坯件上的内环状台阶连接的外环状台阶；S3、将瓶底部坯件与瓶上部坯件连接,外环状台阶插接配合在内环状台阶上,得到瓶坯。本发明的优点在于：工艺简单,可适用于自动化生产线进行生产,提高生产效率,同时降低了生产成本；减少塑料污染的产生。(The invention relates to a production process of a segmented paper pulp bottle blank, which comprises the following steps: s1, respectively manufacturing a bottle upper blank and a bottle bottom blank, wherein the inner wall of the bottle bottom blank is provided with an inner annular step; s2, placing the bottle upper blank into a concave table processing die, and processing an outer annular step which can be connected with the inner annular step on the bottle upper blank on the outer wall of the bottle upper blank; and S3, connecting the bottle bottom blank with the bottle upper blank, and inserting and matching the outer annular step on the inner annular step to obtain the bottle blank. The invention has the advantages that: the process is simple, and the method is suitable for an automatic production line to produce, so that the production efficiency is improved, and the production cost is reduced; the generation of plastic pollution is reduced.)

1. The production process of the segmented pulp bottle blank is characterized by comprising the following steps: the method comprises the following steps:

s1, respectively manufacturing a bottle upper blank and a bottle bottom blank, wherein the inner wall of the bottle bottom blank is provided with an inner annular step;

s2, placing the bottle upper blank into a concave table processing die, and processing an outer annular step which can be connected with the inner annular step on the bottle upper blank on the outer wall of the bottle upper blank;

and S3, connecting the bottle bottom blank with the bottle upper blank, and inserting and matching the outer annular step on the inner annular step to obtain the bottle blank.

2. The process for producing a segmented pulp bottle preform according to claim 1, wherein: in step S3, when the bottle bottom blank and the bottle upper blank are connected, a layer of adhesive is coated on the surface of the outer annular step, and then the outer annular step and the inner annular step are fitted by insertion.

3. The process for producing a segmented pulp bottle preform according to claim 1 or 2, wherein: concave station mold processing includes a die, and a setting is in terrace die on the die, and a setting is in flexible formed part between die and the terrace die, the die cavity hole has been seted up on the die, die cavity step portion has been seted up on the inside wall of die cavity hole, one side of terrace die is equipped with the terrace die apron, and during the shaping, in the terrace die stretched into bottle upper portion blank, flexible formed part extrudeed the lateral wall of bottle upper portion blank under the exogenic action to form an outer annular step.

4. The process for producing a segmented pulp bottle preform according to claim 3, wherein: the flexible forming part is a flexible soft bag, gas or liquid can be filled into the flexible soft bag, during forming, the gas or liquid is filled into the flexible soft bag, the flexible soft bag deforms, the outer side wall of the blank at the upper part of the bottle is extruded, and finally, an outer annular step is formed.

5. The process for producing a segmented pulp bottle preform according to claim 4, wherein: the flexible forming piece is flexible soft glue, and during the shaping, the flexible soft glue is extruded downwards to the terrace die apron, and flexible soft glue atress takes place deformation to extrude the lateral wall of bottle upper portion blank, finally form an outer annular step.

6. The process for producing a segmented pulp bottle preform according to claim 5, wherein: and guide columns vertical to the upper surface of the female die are fixedly mounted at the four corners of the female die respectively, guide grooves are formed in the four corners of the male die cover plate respectively, and each guide column is in sliding fit with the corresponding guide groove.

7. The process for producing a segmented pulp bottle preform according to claim 6, wherein: the bottle upper portion blank is inserted into the cavity inner hole, and the outer diameter of the bottle upper portion blank is equal to the inner diameter of the cavity inner hole.

8. The process for producing a segmented pulp bottle preform according to claim 4 or 5, wherein: the flexible forming part is of an annular structure and is arranged between the cavity step part and the blank on the upper part of the bottle.

9. The process for producing a segmented pulp bottle preform according to claim 8, wherein: the male die and the male die cover plate are integrally formed, the cross section profile of the male die cover plate and the cross section profile of the female die are both rectangular, and the two rectangles have the same size.

10. The process for producing a segmented pulp bottle preform according to claim 9, wherein: the depth of the inner hole of the cavity is equal to the height of the blank at the upper part of the bottle, and the blank at the upper part of the bottle is contacted with the bottom of the inner hole of the cavity.

Technical Field

The invention relates to the technical field of paper pulp bottle production, in particular to a production process of a segmented paper pulp bottle blank.

Background

The beverage bottle generally uses Polyester (PET), Polyethylene (PE), polypropylene (PP) as raw materials, after adding corresponding organic solvent, after high-temperature heating, through the plastic mold through blow molding, extrusion blow, or injection moulding form to form, because plastics are difficult to degrade, recycle rate is low, therefore it is very not environmental protection, at present many article begin to adopt paper environmental protection material, for example handbag, milk bag etc., but, at present, the precedent of using paper material to make beverage bottle has not appeared, and paper material's hardness, plastic degree of construction can be used for the preparation of beverage bottle completely, therefore, regard paper material as the main preparation material of beverage bottle, not only environmental protection safety, and the outward appearance is more pleasing to the eye atmosphere than the plastic bottle, will obtain more people's liking.

Chinese patent, its patent number 201520942921.X, patent name is a paper beverage bottle. The bottle body of the paper beverage bottle comprises a paper pulp outer shell, a hollow grid paperboard core, a paper pulp inner shell and a PE waterproof coating film, wherein the paper pulp outer shell is connected with the hollow grid paperboard core through a first adhesive layer, and the hollow grid paperboard core is connected with the paper pulp inner shell through a second adhesive layer. However, the bottle body is formed by rolling paper and then bonding the paper with viscose glue, and has a plurality of parts, so that the cost of the paper beverage bottle is very high, the manufacturing process is very long, the cost is not reduced, and the popularization and the use are not facilitated.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a production process of a segmented pulp bottle blank.

The purpose of the invention is realized by the following technical scheme:

the production process of the sectioned pulp bottle blank comprises the following steps:

s1, respectively manufacturing a bottle upper blank and a bottle bottom blank, wherein the inner wall of the bottle bottom blank is provided with an inner annular step;

s2, placing the bottle upper blank into a concave table processing die, and processing an outer annular step which can be connected with the inner annular step on the bottle upper blank on the outer wall of the bottle upper blank;

and S3, connecting the bottle bottom blank with the bottle upper blank, and inserting and matching the outer annular step on the inner annular step to obtain the bottle blank.

Further, in step S3, when the bottle bottom blank and the bottle upper blank are connected, a layer of adhesive is coated on the surface of the outer annular step, and then the outer annular step and the inner annular step are fitted in an inserting manner.

Further, the concave station mold processing includes a die, and a setting is in terrace die on the die, and a setting is in flexible formed part between die and the terrace die, the die cavity hole has been seted up on the die, the die cavity step portion has been seted up on the inside wall of die cavity hole, one side of terrace die is equipped with the terrace die apron, and during the shaping, in the terrace die stretched into bottle upper portion blank, flexible formed part extruded the lateral wall of bottle upper portion blank under the exogenic action to form an outer annular step.

Furthermore, the flexible forming part is a flexible soft bag, gas or liquid can be filled into the flexible soft bag, and during forming, the gas or liquid is filled into the flexible soft bag, so that the flexible soft bag deforms, the outer side wall of the blank at the upper part of the bottle is extruded, and finally, an outer annular step is formed.

Further, flexible formed part is flexible glue, and during the shaping, the flexible glue is extruded downwards to the terrace die apron, and flexible glue atress takes place deformation to extrude the lateral wall of bottle upper portion blank, finally form an outer annular step.

Furthermore, four corners of the female die are respectively and fixedly provided with guide columns perpendicular to the upper surface of the female die, four corners of the male die cover plate are respectively provided with guide grooves, and each guide column is in sliding fit with the corresponding guide groove.

Further, the bottle upper blank is inserted into the cavity inner hole, and the outer diameter of the bottle upper blank is equal to the inner diameter of the cavity inner hole.

Further, flexible formed part be annular structure, just flexible formed part sets up between die cavity step portion and bottle upper portion blank.

Furthermore, the male die and the male die cover plate are integrally formed, the cross section profile of the male die cover plate and the cross section profile of the female die are both rectangular, and the two rectangles have the same size.

Further, the depth of the inner hole of the cavity is equal to the height of the blank at the upper part of the bottle, and the blank at the upper part of the bottle is contacted with the bottom of the inner hole of the cavity.

The invention has the following advantages:

1. the production process of the segmented paper pulp bottle blank can use automation in the production process, so that the production cost is low, the material cost of the segmented paper pulp bottle is low, the cost of the whole product is low, the popularization and the application are facilitated, and the plastic pollution can be reduced.

2. The mould of bottle upper portion blank of making segmentation pulp bottle that provides can make the device accomplish the preparation of the outer annular step of bottle upper portion blank automatically through exerting external force to flexible formed part, is favorable to adding the preparation of bottle upper portion blank to this segmentation pulp bottle's automatic production assembly line to can improve production efficiency, reduce the processing cost.

Drawings

FIG. 1 is a schematic view of the construction of a bottle upper blank (without the outer annular step extruded) of the present invention;

FIG. 2 is a schematic view of the construction of the bottle upper blank (extruded with an outer annular step) of the present invention;

FIG. 3 is a schematic structural view of a concave machining mold according to the present invention;

FIG. 4 is a schematic cross-sectional view of the concave machining die of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention;

FIG. 6 is a schematic structural view of a concave machining die using a flexible soft bag as a flexible forming part;

FIG. 7 is a schematic structural view of a concave station processing mold with flexible soft rubber as a flexible forming part;

in the figure: 1-female die, 101-inner hole of die cavity, 102-step part of die cavity, 103-guide post, 2-male die, 201-male die cover plate, 202-guide groove, 3-flexible forming part, 301-outer annular step and 4-upper blank of bottle.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.

The segmented pulp bottle first needs to be described: the segmented pulp bottle comprises a bottle upper blank 4, a bottle bottom blank matched with the bottle upper blank 4 in a plugging mode, and an inner film adhered to the inner sides of the bottle upper blank 4 and the bottle bottom blank, wherein the bottle upper blank 4 and the bottle bottom blank can be manufactured by a die pressing technology, and the structure of the bottle upper blank 4 without pressing out an outer annular step 301 is shown in fig. 1, which is the prior art, and is not described in detail herein. It should be noted, however, that pulp bottles cannot be made by blow molding techniques because pulp does not have the ductility of plastic. The structure and shape of the bottle itself should be a daily item, and in the present invention, the bottle is divided into two sections from the middle to form the bottle upper blank 4 and the bottle bottom blank. In order to connect the bottle top blank 4 and the bottle bottom blank smoothly inside and outside, especially the outer side wall, and achieve an aesthetic effect, the connecting portion of the bottle top blank 4 and the bottle bottom blank needs to be treated to a certain extent. In the present invention, the bottle bottom blank has an inner annular step on its inner sidewall. The wall thickness of the inner annular step can be half of that of other parts. Thus, it is desirable to provide an outer annular step 301 on the outer sidewall of the bottle upper blank 4, as shown in FIG. 2. The wall thickness of the outer annular step 301 is also half of that of other parts, so that when the outer annular step 301 is inserted into the inner annular step, the sum of the wall thicknesses of the outer annular step 301 and the inner annular step is the wall thickness of other parts, and the purpose of attractive appearance is achieved. Further, it is contemplated that the segmented pulp bottle may be circular in cross-section or may have other shapes. In this embodiment, the segmented pulp bottle is circular in cross-section.

The production process of the sectioned pulp bottle blank comprises the following steps:

s1, respectively manufacturing a bottle upper blank 4 and a bottle bottom blank, wherein an inner annular step is arranged on the inner wall of the bottle bottom blank, and the inner annular step on the inner wall of the bottle bottom blank can be formed in one step through injection molding;

s2, placing the bottle upper blank into a concave table processing die, and processing an outer annular step which can be connected with the inner annular step on the bottle upper blank on the outer wall of the bottle upper blank;

and S3, connecting the bottle bottom blank with the bottle upper blank, and inserting and matching the outer annular step on the inner annular step to obtain the bottle blank.

Further, in step S3, when the bottle bottom blank and the bottle upper blank are connected, a layer of adhesive is coated on the surface of the outer annular step, and then the outer annular step and the inner annular step are fitted in an inserting manner. The glue should be food grade. Of course, this step can be omitted, and it can be fixed by adhesion of the inner film, or by other methods. Of course, automated equipment for applying a layer of glue to the surface of the outer annular step is also known in the art and can be used directly, and therefore will not be described in detail here.

Further, as shown in fig. 3 to 7, the concave station processing mold comprises a concave die 1, a male die 2 arranged on the concave die 1, and a flexible forming part 3 arranged between the concave die 1 and the male die 2, a cavity inner hole 101 is formed in the concave die 1, a cavity step part 102 is formed in the inner side wall of the cavity inner hole 101, a convex die cover plate 201 is arranged on one side of the convex die 2, the convex die 2 extends into the upper blank 4 of the bottle during forming, and the flexible forming part 3 extrudes the outer side wall of the upper blank 4 of the bottle under the action of external force to form an outer annular step 301. Wherein, the female die 1 and the male die 2 are made of hard materials, such as steel, etc., so as to avoid deformation in the extrusion process. The axial depth of the cavity step 102 should be equal to the axial length of the outer annular step 301. At the same time, in order to make the flexible molded part 3 exert sufficient pressing force, the punch cover 201, the cavity step 102, and the outer side wall of the bottle upper blank 4 form a closed cavity.

An example for a flexible profile 3 is: as shown in fig. 6, the flexible molding member 3 is a flexible soft bag, and gas or liquid can be filled into the flexible soft bag during molding, so that the flexible soft bag deforms to extrude the outer side wall of the blank at the upper part of the bottle, and finally an outer annular step is formed. The flexible bladder should be of a material that can be inflated or stretched, such as rubber.

Another example for a flexible profile 3 is: as shown in fig. 7, the flexible forming member 3 is a flexible soft rubber, and during forming, the male die cover plate extrudes the flexible soft rubber downwards, the flexible soft rubber deforms under stress, and the outer side wall of the blank at the upper part of the bottle is extruded, so that an outer annular step is finally formed.

Furthermore, four corners of the female die 1 are respectively and fixedly provided with guide columns 103 perpendicular to the upper surface of the female die 1, four corners of the male die cover plate 201 are respectively provided with guide grooves 202, and each guide column 103 is in sliding fit with the corresponding guide groove 202.

Further, the bottle upper blank 4 is inserted into the cavity inner hole 101, and the outer diameter of the bottle upper blank 4 is equal to the inner diameter of the cavity inner hole 101.

Further, in the present embodiment, the bottle upper blank 4 is shown as circular in cross-section, and therefore, the flexible molding member 3 is of an annular structure, and the flexible molding member 3 is disposed between the cavity step 102 and the bottle upper blank 4.

Further, the male die 2 and the male die cover plate 201 are integrally formed, the cross-sectional profile of the male die cover plate 201 and the cross-sectional profile of the female die 1 are both rectangular, and the two rectangles have the same size.

Further, the depth of the cavity inner hole 101 is equal to the height of the bottle upper blank 4, and the bottle upper blank 4 is in contact with the bottom of the cavity inner hole 101, so that the bottle upper blank 4 is axially positioned in the cavity inner hole 101.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.