Multi-layer continuous plastic bottle forming die and forming device of blowing, filling and sealing equipment

Abstract

The utility model discloses a multi-layer continuous plastic bottle forming die and a forming device of blowing, filling and sealing equipment, which relate to the technical field of plastic product forming and comprise a first die assembly and a second die assembly which are vertically and alternately arranged, the first mold assembly comprises a first plastic bottle body cavity and a first plastic bottle head cavity located below the first plastic bottle body cavity, and the second mold assembly comprises a second plastic bottle body cavity and a second plastic bottle head cavity located below the second plastic bottle body cavity. The first plastic bottle body cavity and the first plastic bottle head cavity are in vertical seamless connection, the second plastic bottle body cavity and the second plastic bottle head cavity are in vertical seamless connection, and the first plastic bottle body cavity and the second plastic bottle head cavity can form a complete plastic bottle cavity. And the first plastic bottle head cavity and the second plastic bottle body cavity can form a complete plastic bottle cavity. Therefore, the cost of the die can be reduced, and products produced by the die can be prevented from generating wastes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic product forming, particularly to a multi-layer continuous plastic bottle forming die of blow-filling-sealing equipment and a forming device. BACKGROUND

[0002] Blow-filling-sealing (BFS) equipment integrates bottle making, filling and sealing into one, also known as "three-in-one" technology, which is a kind of aseptic preparation filling equipment.

[0003] The current continuous plastic bottle forming technology adopts continuous closed parison technology. In order to improve production efficiency, a multi-mold continuous BFS equipment is used. The multi-mold continuous BFS equipment has 14 sets of molds to form a ring-shaped closed mold chain. The mold chain is rotated to match the mold to realize the forming and sealing process of the bottle. Therefore, the working efficiency is high, and the equipment capacity is large. However, due to the configuration of multiple molds, the cost of the equipment is very high, which is difficult for general enterprises to accept. In addition, due to the limitation of the minimum tooth structure of the ring-shaped closed mold chain and the chain wheel, the height of a single rotating mold (i.e. the chain pitch) is fixed, and the mold height cannot be customized according to the bottle type, which leads to a certain waste area between the vertical rows of products, so it is not possible to design the mold to maximize the material utilization rate for each specification during multi-specification production.

[0004] Therefore, how to avoid waste of products produced by the plastic bottle forming die is a technical problem that needs to be solved by those skilled in the art at present. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a multi-layer continuous plastic bottle forming die of blow-filling-sealing equipment to avoid waste of products produced by the plastic bottle forming die.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A multi-layer continuous plastic bottle forming die of blow-filling-sealing equipment, comprising:

[0008] Vertically alternating first and second mold assemblies, the first mold assembly comprising a first plastic bottle body cavity and a first plastic bottle head cavity located below the first plastic bottle body cavity, the second mold assembly comprising a second plastic bottle body cavity and a second plastic bottle head cavity located below the second plastic bottle body cavity, the first plastic bottle body cavity and the first plastic bottle head cavity being vertically seamlessly connected, the second plastic bottle body cavity and the second plastic bottle head cavity being vertically seamlessly connected, the first plastic bottle body cavity being capable of forming a complete plastic bottle cavity with the second plastic bottle head cavity, and the first plastic bottle head cavity being capable of forming a complete plastic bottle cavity with the second plastic bottle body cavity.

[0009] In a possible implementation, the first mold assembly comprises a pair of first molds, and the second mold assembly comprises a pair of second molds; the first mold assembly is provided with a plurality of first plastic bottle body cavities and first plastic bottle head cavities in a first direction; and the second mold assembly is provided with a plurality of second plastic bottle body cavities and second plastic bottle head cavities in the first direction.

[0010] In a possible implementation, the first mold and the second mold are each provided with a guide hole at two side edges in the first direction; and a positioning pin is arranged in the guide hole and used for mold positioning during mold closing.

[0011] In a possible implementation, the first mold assembly and the second mold assembly are each provided with a product chain positioning cavity used for molding a positioning point of a product chain.

[0012] In a possible implementation, the first mold and the second mold are each provided with a mounting hole used for mounting the first mold or the second mold.

[0013] In a possible implementation, the first mold assembly and the second mold assembly are each provided with a cooling water channel used for passing cooling water to accelerate molding of the plastic bottle.

[0014] In a possible implementation, the first mold assembly and the second mold assembly are each provided with a vacuum channel in communication with the first plastic bottle body cavity or the second plastic bottle body cavity; and the vacuum channel is used for extracting air in the first plastic bottle body cavity or the second plastic bottle body cavity to make a plastic parison tightly molded to the cavity.

[0015] In a possible implementation, the first mold assembly and the second mold assembly have the same height in the vertical direction; the first plastic bottle body cavity and the second plastic bottle body cavity have the same height; and the first plastic bottle head cavity and the second plastic bottle head cavity have the same height.

[0016] In a possible implementation, the plurality of first plastic bottle body cavities are seamlessly connected; and the plurality of second plastic bottle body cavities are seamlessly connected.

[0017] The utility model also provides a molding device which comprises a plurality of groups of vertically arranged blow-filling-seal equipment multi-layer continuous plastic bottle molding molds as described above.

[0018] Compared with the prior art, the blow-filling-seal equipment multi-layer continuous plastic bottle molding mold has the following beneficial effects:

[0019] The first mold assembly and the second mold assembly are vertically distributed and alternately shape the hot melt type blank in the vertical direction by corresponding driving devices; in other words, the hot melt type blank extends vertically, and the first mold assembly and the second mold assembly abut one above the other, and the hot melt type blank is shaped into a complete plastic bottle by the plastic bottle body cavity and the plastic bottle head cavity arranged in the first mold assembly and the second mold assembly; however, it should be noted that the plastic bottle body cavity in the first mold assembly and the second mold assembly is below the plastic bottle head cavity, and there is no gap between the two; in this way, when the mold starts to work under the driving of the driving device, the first plastic bottle body cavity of the first mold assembly forms a complete plastic bottle cavity with the second plastic bottle head cavity in the second mold assembly above it, and then the first mold assembly moves upward under the driving of the driving device, so as to be above the second mold assembly; in this way, the second plastic bottle body cavity of the second mold assembly forms a complete plastic bottle cavity with the first plastic bottle head cavity of the first mold assembly, and then the second mold assembly moves to the top of the first mold assembly under the driving of the driving device, and the cycle is repeated; in this way, the molding mold provided by the application can continuously produce plastic bottles, compared with the related art, a large number of molds are reduced, and only two groups are needed to realize continuous production, so that the cost required for producing products can be reduced; and since there is no gap between the plastic bottle body cavity and the plastic bottle head cavity, there is no useless waste between adjacent two plastic products, so that the maximum utilization rate of the molding mold can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0021] Figure 1 The molding mold structure schematic view provided by the embodiment of the present application;

[0022] Figure 2 The molding mold outside structure schematic view provided by the embodiment of the present application;

[0023] Figure 3 The product chain structure schematic view provided by the embodiment of the present application;

[0024] Figure 4 The plastic bottle structure schematic view provided by the embodiment of the present application;

[0025] Figure 5This is a schematic diagram of the split structure of the plastic bottle provided in an embodiment of the present utility model.

[0026] in:

[0027] 01-Plastic bottle, 011-Plastic bottle head, 012-Plastic bottle body, 02-Product chain, 021-Location point;

[0028] 100 - First mold assembly, 110 - First mold, 111 - First plastic bottle body cavity, 112 - First plastic bottle head cavity;

[0029] 200 - Second mold assembly, 210 - Second mold, 211 - Second plastic bottle body cavity, 212 - Second plastic bottle head cavity;

[0030] 300-Positioning Pin;

[0031] 400 - Product chain positioning cavity;

[0032] 500 - Mounting hole;

[0033] 600 - Cooling water passage;

[0034] 700 - Vacuum Channel. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0038] The purpose of this invention is to provide a multi-layer continuous plastic bottle molding die for a blow-fill-seal equipment, which avoids waste generated by the product chain 02 produced by the plastic bottle molding die, thereby improving the utilization rate of the die.

[0039] It should be noted that the first direction is defined as the direction of X in the drawings in the embodiment.

[0040] To achieve the above object, the utility model provides the following technical scheme:

[0041] Please refer to Figures 1 to 4 The embodiment provides a multi-layer continuous plastic bottle forming die of a blow-filling-seal device, comprising: a first die assembly 100 and a second die assembly 200 vertically and alternately arranged; the first die assembly 100 comprises a first plastic bottle body cavity 111 and a first plastic bottle head cavity 112 located below the first plastic bottle body cavity 111; the second die assembly 200 comprises a second plastic bottle body cavity 211 and a second plastic bottle head cavity 212 located below the second plastic bottle body cavity 211; the first plastic bottle body cavity 111 and the first plastic bottle head cavity 112 are vertically and seamlessly connected; the second plastic bottle body cavity 211 and the second plastic bottle head cavity 212 are vertically and seamlessly connected; the first plastic bottle body cavity 111 can form a complete plastic bottle cavity together with the second plastic bottle head cavity 212; and the first plastic bottle head cavity 112 can form a complete plastic bottle cavity together with the second plastic bottle body cavity 211.

[0042] In the embodiment, the first plastic bottle body cavity 111 and the second plastic bottle body cavity 211 are used for forming a plastic bottle body 012; the first plastic bottle head cavity 112 and the second plastic bottle head cavity 212 are used for sealing the plastic bottle body 012, i.e. forming a plastic bottle head 011 matched with the plastic bottle body 012.

[0043] Specifically, the first mold assembly 100 and the second mold assembly 200 are vertically distributed, and the hot melt parison is shaped alternately by the corresponding driving devices in the vertical direction; in other words, the hot melt parison extends vertically, and the first mold assembly 100 and the second mold assembly 200 abut one above the other, and the hot melt parison is shaped into a complete plastic bottle 01 through the plastic bottle body cavity and the plastic bottle head cavity arranged therein; however, it should be noted that whether it is the first mold assembly 100 or the second mold assembly 200, the plastic bottle body cavity in the interior is located below the plastic bottle head cavity, and there is no gap between the two; in this way, when the mold starts to work under the driving of the driving device, the first plastic bottle body cavity 111 of the first mold assembly 100 will form a complete plastic bottle 01 cavity with the second plastic bottle head cavity 212 in the second mold assembly 200 located above it, and then the first mold assembly 100 will move upwards under the driving of the driving device, so as to be located above the second mold assembly 200; in this way, the second plastic bottle body cavity 211 of the second mold assembly 200 will form a complete plastic bottle 01 cavity with the first plastic bottle head cavity 112 of the first mold assembly 100, and then the second mold assembly 200 will move to the upper side of the first mold assembly 100 under the driving of the driving device, and the cycle will be repeated.

[0044] In other words, the use process of the forming mold provided by the utility model is as follows: firstly, the pipe embryo is discharged, the hot melt pipe embryo extruded by the extrusion device first passes through the first mold assembly 100 which has not started to close, reaches the second mold assembly 200 below, and then the second mold assembly 200 is closed, and under the action of the second plastic bottle body cavity 211, the body part of the first batch of plastic products is formed; after the filling system is filled into the bottle body, the first mold assembly 100 located above is closed, the first plastic bottle head cavity 112 will form a complete plastic bottle 01 cavity with the second plastic bottle body cavity 211, which not only realizes the sealing of the first batch of plastic bottles 01, but also forms the bottle body part of the second batch of plastic bottles 01, and then the filling is opened again, and the bottle body part of the second batch of plastic bottles 01 is filled, then the second mold assembly 200 is opened and moves upwards under the driving of the driving device, and moves to the upper side of the first mold assembly 100, and the second plastic bottle head cavity 212 and the first plastic bottle body cavity 111 cooperate to seal the second batch of plastic bottles 01; then the above steps are repeated to form the product chain 02 of the plastic bottles 01.

[0045] In this way, the plastic bottle 01 can be continuously produced by the forming mold provided in the present application, compared with the related art, a large number of molds are reduced, and only two groups are needed to realize continuous production, so that the cost required for producing the product can be reduced; and since there is no gap between the plastic bottle body cavity and the plastic bottle head cavity, there is no useless waste between the adjacent two plastic products, so that the maximum utilization rate of the forming mold can be improved.

[0046] In a possible implementation, the first mold assembly 100 includes a pair of first molds 110, and the second mold assembly 200 includes a pair of second molds 210; the first mold assembly 100 is provided with a plurality of first plastic bottle body cavities 111 and first plastic bottle head cavities 112 in a first direction, and the second mold assembly 200 is provided with a plurality of second plastic bottle body cavities 211 and second plastic bottle head cavities 212 in the first direction.

[0047] In the embodiment, the first mold assembly 100 includes a pair of first molds 110, and the second mold assembly 200 includes a pair of second molds 210; in order to improve the efficiency of forming the plastic bottle 01 each time, the first mold assembly 100 is provided with a plurality of first plastic bottle body cavities 111 in a horizontal direction, and a same number of first plastic bottle head cavities 112 are arranged below the corresponding first plastic bottle body cavities 111; the second mold assembly 200 is also arranged in this way, so that the plastic bottles 01 can be produced in batches in a row when produced.

[0048] In a possible implementation, the first mold 110 and the second mold 210 are provided with guide holes on both sides in the first direction, and a positioning pin 300 is arranged in the guide hole; the positioning pin 300 is used for mold positioning in the mold closing process.

[0049] It can be understood that, in order to facilitate the mold closing and mold opening of the first mold assembly 100 and the second mold assembly 200, as shown in Figure 2 two guide holes in a through structure are arranged on both sides of the first mold 110 and the second mold 210, and a positioning pin 300 is arranged in the guide hole; in this way, when the first mold assembly 100 or the second mold assembly 200 is opened or closed, the first mold 110 or the second mold 210 moves along the positioning pin 300, and finally accurately docks together under the guidance of the positioning pin 300, so that a large amount of time and effort is not needed for docking each time the mold is closed.

[0050] In a possible implementation, the first mold assembly 100 and the second mold assembly 200 are both provided with a product chain positioning cavity 400, which is used for molding the positioning point 021 of the product chain 02 of the plastic bottle 01.

[0051] It can be understood that, in order to facilitate the positioning of the product chain 02 produced for later punching, the first mold assembly 100 and the second mold assembly 200 are both provided with the product chain positioning cavity 400, and the product chain 02 will form the positioning point 021 in the cavity during production.

[0052] Of course, the product chain positioning cavity 400 in the mold can also be cancelled, and then the product chain 02 is output and positioned by the product bottle body, which is not limited here.

[0053] In a possible implementation, the first mold 110 and the second mold 210 are both provided with a mounting hole 500 on the outer side, which is used for mounting the first mold 110 or the second mold 210.

[0054] It can be understood that the molding mold in the embodiment needs to be continuously moved up and down in the vertical direction, and the first mold 110 and the second mold 210 are both driven by independent driving devices. Therefore, in order to facilitate the mounting of the first mold 110 and the second mold 210, mounting holes 500 are provided on the outer side of the first mold 110 and the second mold 210, which can be directly connected to the screws on the driving device.

[0055] In a possible implementation, the first mold assembly 100 and the second mold assembly 200 are provided with a cooling water channel 600, which is used for passing in cooling water to accelerate the molding of the plastic bottle 01.

[0056] It can be understood that, in the embodiment, in order to accelerate the shaping of the pipe blank after molding, the first mold assembly 100 and the second mold assembly 200 are connected with the cooling water channel 600, which can be connected with the cooling water circulation pipeline outside, so as to continuously cool the pipe blank in the mold, thereby improving the molding speed of the plastic bottle 01, and further improving the production efficiency.

[0057] In a possible implementation, the first mold assembly 100 and the second mold assembly 200 are provided with a vacuum channel 700, and the vacuum channel 700 is connected with the first plastic bottle body cavity 111 or the second plastic bottle body cavity 211. The vacuum channel 700 is used for extracting the air in the first plastic bottle body cavity 111 or the second plastic bottle body cavity 211, so that the plastic parison is tightly formed in the cavity.

[0058] Understandably, the first mold assembly 100 and the second mold assembly 200 are also equipped with a vacuum channel 700. The vacuum channel 700 can be connected to an external vacuum pump, which can extract the air from the first mold assembly 100 and the second mold assembly 200 to form a negative pressure environment, thereby making the plastic preform tightly adhere to the cavity for molding. If the preform does not adhere tightly to the inner wall of the cavity during the molding process, defects such as air holes and dents will be left after the product is molded, which will seriously affect the appearance quality and performance of the product. By vacuuming, not only can the density and strength of the product be improved, but also the dimensional accuracy and surface finish of the product can be ensured, thereby improving the overall manufacturing quality.

[0059] In one possible implementation, the first mold assembly 100 and the second mold assembly 200 are at the same height in the vertical direction, the first plastic bottle body cavity 111 and the second plastic bottle body cavity 211 are at the same height, and the first plastic bottle head cavity 112 and the second plastic bottle head cavity 212 are at the same height.

[0060] In another possible implementation, the outline dimensions of the first mold assembly 100 and the second mold assembly 200 may be different, but it is necessary to ensure that the top dimensions of the first plastic bottle body cavity 111 and the bottom dimensions of the second plastic bottle head cavity 212 are the same, and the top dimensions of the second plastic bottle body cavity 211 and the bottom dimensions of the first plastic bottle head cavity 112 are the same. This ensures that when the first mold assembly 100 and the second mold assembly 200 are used together, a complete bottle product can be produced.

[0061] In this embodiment, the produced product chain 02 is as follows: Figure 3 As shown, in order to ensure that the size and specifications of each batch of plastic bottles 01 are the same, the height of the first mold assembly 100 and the second mold assembly 200 are the same, and the bottle body cavity and the bottle head cavity are also the same.

[0062] Of course, in this embodiment, the size of the mold assembly can be changed according to the different specifications of the plastic products actually produced.

[0063] In one possible implementation, several first plastic bottle body cavities 111 are seamlessly connected, and several second plastic bottle body cavities 211 are seamlessly connected.

[0064] Understandably, this setup reduces waste in the vertical directions of the product chain 02, thereby improving the overall utilization rate of the mold components and saving on material costs.

[0065] This utility model also provides a molding device, including several sets of vertically arranged multi-layer continuous plastic bottle molding dies as described above for blow-fill-seal equipment.

[0066] In other words, the forming device can include several groups of the blow-molded and sealed equipment multilayer continuous plastic bottle forming mold described above, which can further improve the production efficiency of the plastic bottle 01, and also has the beneficial effects of the forming mold described above.

[0067] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity from another without necessarily requiring or implying any actual relationship or order between or among the entities.

[0068] The various embodiments are described in a progressive manner in the specification, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0069] The above provides a detailed description of the embodiments of the present application. The principle and implementation of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A multi-layer continuous plastic bottle forming mold for a blow-fill-seal apparatus, characterized by, The utility model relates to a vertical alternation set first mould assembly (100) and second mould assembly (200), the first mould assembly (100) includes first plastic bottle body cavity (111) and first plastic bottle head cavity (112) under first plastic bottle body cavity (111), the second mould assembly (200) includes second plastic bottle body cavity (211) and second plastic bottle head cavity (212) under second plastic bottle body cavity (211), first plastic bottle body cavity (111) and first plastic bottle head cavity (112) vertical seamless connection, second plastic bottle body cavity (211) and second plastic bottle head cavity (212) vertical seamless connection, first plastic bottle body cavity (111) can form complete plastic bottle cavity with second plastic bottle head cavity (212), first plastic bottle head cavity (112) can form complete plastic bottle cavity with second plastic bottle body cavity (211). The first mould assembly (100) includes a pair of first moulds (110), and the second mould assembly (200) includes a pair of second moulds (210). The first mould assembly (100) is arranged in parallel with a plurality of first plastic bottle body cavities (111) and first plastic bottle head cavities (112) in a first direction, and the second mould assembly (200) is arranged in parallel with a plurality of second plastic bottle body cavities (211) and second plastic bottle head cavities (212) in the first direction.

2. The blow-fill-seal apparatus multi-layered continuous plastic bottle forming mold according to claim 1, wherein, The first mould (110) and the second mould (210) are each provided with a guide hole on both sides in the first direction, and a positioning pin (300) is installed in the guide hole. The positioning pin (300) is used for mould positioning during mould clamping.

3. The blow-fill-seal apparatus multi-layered continuous plastic bottle forming mold of claim 2, wherein, The first mould assembly (100) and the second mould assembly (200) are each provided with a product chain positioning cavity (400). The product chain positioning cavity (400) is used for forming a positioning point (021) of a product chain (02).

4. The blow-fill-seal apparatus multi-layered continuous plastic bottle forming mold of claim 2, wherein, The first mould (110) and the second mould (210) are each provided with a mounting hole (500) on the outside. The mounting hole (500) is used for mounting the first mould (110) or the second mould (210).

5. The blow-fill-seal apparatus multi-layered continuous plastic bottle forming mold of claim 2, wherein, The first mould assembly (100) and the second mould assembly (200) are each provided with a cooling water channel (600). The cooling water channel (600) is used for passing in cooling water to accelerate the forming of a plastic bottle (01).

6. The blow-fill-seal apparatus multi-layered continuous plastic bottle forming mold of claim 1, wherein, The first mould assembly (100) and the second mould assembly (200) are each provided with a vacuum channel (700). The vacuum channel (700) is in communication with the first plastic bottle body cavity (111) or the second plastic bottle body cavity (211). The vacuum channel (700) is used for extracting air in the first plastic bottle body cavity (111) or the second plastic bottle body cavity (211) to make a plastic parison adhere to the cavity for forming.

7. The blow-fill-seal apparatus multilayer continuous plastic bottle forming mold according to claim 1, characterized by, ​ 8. The blow-fill-seal apparatus multi-layered continuous plastic bottle forming mold of claim 1, wherein, The first mold assembly (100) and the second mold assembly (200) have the same height in the vertical direction, the first plastic bottle body cavity (111) and the second plastic bottle body cavity (211) have the same height, and the first plastic bottle head cavity (112) and the second plastic bottle head cavity (212) have the same height.

9. The blow-fill-seal apparatus multi-layered continuous plastic bottle forming mold of claim 2, wherein, The first plastic bottle body cavities (111) are seamlessly connected, and the second plastic bottle body cavities (211) are seamlessly connected.

10. A molding apparatus characterized by comprising: The blowing and filling sealing equipment multi-layer continuous plastic bottle forming mold comprises a plurality of groups of vertically arranged blowing and filling sealing equipment multi-layer continuous plastic bottle forming molds as claimed in any one of claims 1 to 9.

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