CN217514518U

CN217514518U - Die cavity structure and bottle blowing die

Info

Publication number: CN217514518U
Application number: CN202220957405.4U
Authority: CN
Inventors: 谢国基; 姜晓平; 林昌武; 胡志国; 方英; 卢佳; 杨建茁
Original assignee: GDXL Precise Machinery Co Ltd
Current assignee: GDXL Precise Machinery Co Ltd
Priority date: 2022-04-23
Filing date: 2022-04-23
Publication date: 2022-09-30
Anticipated expiration: 2032-04-23

Abstract

The utility model provides a die cavity structure and bottle blowing mould, the utility model belongs to bottle blowing mould technical field, including two die cavity half-moulds and at least one first mold insert of mutually supporting, the die cavity half-mould has the first shaping surface of the partial body shape of at least limited container, the first mold insert has the second shaping surface of the partial body shape of at least limited container, first mold insert movable mounting is in the die cavity half-mould, the die cavity half-mould is seted up can hold the first storage tank of first mold insert; the first insert retracts to the first accommodating groove, the first molding surface and the second molding surface form a molding surface at least limiting the shape of the main body of the container, and a first conical guide structure is arranged between the first insert and the first accommodating groove, so that the container with an irregular shape can be blown, and the wall thickness of the blown container is uniform; it is also possible to blow a specific container with an increased local wall thickness.

Description

Die cavity structure and bottle blowing die

Technical Field

The utility model belongs to the technical field of the bottle blowing mould, concretely relates to die cavity structure and bottle blowing mould.

Background

In the prior art, a container is formed by blowing a container blank in a bottle blowing mold, and in the blowing process, the heated container blank is attached to a cavity after axial displacement and radial displacement under the stretching action to form the container.

However, for irregularly shaped containers (for example, containers with a rectangular, oval, or oblong radial cross section), the radial displacements in the circumferential direction are not uniform, taking a container with a rectangular radial cross section as an example, the radial cross section of the container has long sides and short sides, and when the container is formed, the radial displacements of the long sides and the short sides in the circumferential direction are not uniform; the plastic of the part of the container blank forming the long side remains relatively ductile and continues to stretch, having a thinner thickness with respect to the short side, resulting in the problem of uneven wall thickness of the blow formed container.

In addition, for a specific container (such as a container with a handle), when blowing, the local wall thickness of the container needs to be increased, and the traditional bottle blowing mold and bottle blowing method are difficult to realize or control.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a blowing machine which can blow the container with irregular shape and has uniform wall thickness after blowing; the blow molding die can blow a specific container to increase the local wall thickness of the container.

The utility model provides a technical scheme that its technical problem adopted is:

a mold cavity structure comprises two mold cavity half molds and at least one first mold insert, wherein the two mold cavity half molds and the at least one first mold insert are matched with each other, the mold cavity half molds are provided with first molding surfaces at least limiting the shape of part of the main body of a container, the first mold inserts are provided with second molding surfaces at least limiting the shape of part of the main body of the container, the first mold inserts are movably arranged on the mold cavity half molds, and the mold cavity half molds are provided with first accommodating grooves capable of accommodating the first mold inserts; the first insert retracts to the first accommodating groove, the first molding surface and the second molding surface form a molding surface at least limiting the shape of the main body of the container, and a first conical guide structure is arranged between the first insert and the first accommodating groove.

As a further improvement, the first tapered guide structure has at least two, and two first tapered guide structures are transversely or vertically arranged, and two first tapered guide structures are symmetrical or adjacently arranged.

As a further improvement, the first tapered guide structure includes a first inclined plane and a second inclined plane, the first inclined plane and the second inclined plane are respectively arranged on the first and second mold inserts and are respectively arranged on the first and second mold inserts.

As the utility model discloses further improvement, first toper guide structure is still including setting up the card strip and the screens of setting at first storage tank lateral wall at first mold insert lateral wall, card strip and screens looks adaptation, card strip and screens are connected respectively in the one end that the die cavity is close to on first inclined plane and the one end that the die cavity is close to on second inclined plane.

As a further improvement of the utility model, the card strip and the screens outwards extend the setting from the tip on first inclined plane and the tip on second inclined plane respectively.

As a further improvement, the mold cavity structure further includes at least one second mold insert, second mold insert movable mounting is in first mold insert, the second mold insert has the third molding surface of injecing partial second molding surface at least, but the second storage tank of holding second mold insert is seted up to first mold insert.

As a further improvement, a second conical guide structure is arranged between the second mold insert and the second accommodating groove.

As a further improvement of the utility model, the second conical guide structure is the same as the first conical guide structure.

As a further improvement, the bottom of first storage tank is equipped with the direction through-hole along the flexible direction of first mold insert, the back of first mold insert is equipped with the guide post with direction through-hole looks adaptation.

Based on the die cavity structure that above-mentioned provided, the utility model discloses still provide a bottle blowing mould, including die block and foretell die cavity structure, the die block is used for injecing the shape of container bottom.

The utility model has the advantages that: when carrying out the blowing of the irregular container of shape, because the longer part of the radial displacement of container edge circumference need cool off in advance, slow down the plastic ductility of the longer part of radial displacement, make the container wall thickness that the blowing formed even, consequently, need first mold insert to stretch out first storage tank earlier, cool off the back in advance along the longer part of the radial displacement of circumference to the container, retract again to first storage tank in, make the container accomplish the blow molding, when first mold insert retracts to first storage tank, under the guide orientation effect of first toper guide structure, first mold insert can the accurate cooperation with first storage tank, guarantee the yields that the container was blown. In a similar way, when the specific container is blown, after the specific part is cooled by the first insert, the first insert is retracted and is accurately retracted into the first accommodating groove under the guiding and positioning action of the first conical guiding structure, so that the yield of the blown container is ensured.

Drawings

The invention will be further explained with reference to the drawings and the embodiments below:

FIG. 1 is a schematic view of the cavity structure of the present embodiment with the first and second mold parts in a retracted position;

fig. 2 is a schematic view of the structure of the cavity structure of the present embodiment with the first and second insert parts in an extended state.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

The embodiment is as follows:

as shown in fig. 1 and fig. 2, the present embodiment discloses a cavity structure, which includes two cavity halves 1 and at least one first mold insert 2, wherein the cavity halves 1 have a first molding surface 3 at least defining a partial body shape of a container, the first mold insert 2 has a second molding surface 4 at least defining a partial body shape of a container, the first mold insert 2 is movably mounted on the cavity halves 1, and the cavity halves 1 are provided with first receiving grooves 5 capable of receiving the first mold insert 2; the first insert 2 is retracted to a first receiving groove 5, the first molding surface 3 and the second molding surface 4 form a molding surface defining at least a body shape of a part of the container, and a first tapered guide structure 6 is disposed between the first insert 2 and the first receiving groove 5. The first conical guide structure 6 may be disposed on any one, two, three, or four sides of the first insert 2 and the first receiving groove 5, and the specific configuration may be set according to the guiding requirement between the first insert 2 and the first receiving groove 5.

In a preferred embodiment, there are at least two first conical guide structures 6, the arrangement of the first conical guide structures 6 is very flexible, the two first conical guide structures 6 are arranged transversely or longitudinally, and the two first conical guide structures 6 are arranged symmetrically or adjacently. The first accommodating groove 5 is of a stepped groove structure, and a gap exists between the bottom of a first groove position close to the first molding surface and the corresponding part of the first insert; or a gap exists between the bottom of the second slot position far away from the first molding surface and the corresponding part of the first insert, and the arrangement mode avoids assembly interference between two parallel surfaces and is beneficial to processing. The first conical guide structure 6 comprises a first inclined surface 7 arranged on the side wall of the first insert 2 and a second inclined surface 8 arranged on the corresponding side wall of the first accommodating groove 5, and the first inclined surface 7 is matched with the second inclined surface 8. The first inclined plane 7 and the second inclined plane 8 are arranged to gradually expand and extend towards one side close to the cavity. The first conical guide structure 6 further comprises a clamping strip 9 arranged on the side wall of the first insert 2 and a clamping position 10 arranged on the side wall of the first accommodating groove 5, the clamping strip 9 is matched with the clamping position 10, and the clamping strip 9 and the clamping position 10 are respectively connected to one end, close to the cavity, of the first inclined surface 7 and one end, close to the cavity, of the second inclined surface 8. The clamping strip 9 and the clamping position 10 are respectively arranged by extending outwards from the end part of the first inclined plane 7 and the end part of the second inclined plane 8. When the first insert 2 is combined with the first accommodating groove 5, under the tapered guiding action of the first inclined surface 7 and the second inclined surface 8, the first insert 2 gradually enters the first accommodating groove 5 until the clamping strip 9 is matched with the clamping position 10 for limiting, which indicates that the first insert 2 is completely matched with the first accommodating groove 5 in place, and at this time, the first molding surface 3 and the second molding surface 4 form a molding surface at least limiting the shape of the container body.

In a preferred embodiment, the cavity structure further comprises at least one second insert 11, wherein the second insert 11 is movably mounted to the first insert 2, the second insert 11 is provided with a third molding surface 12 for defining a portion of the second molding surface 4, and the first insert 2 is provided with a second receiving cavity 13 capable of receiving the second insert 11. The second insert 11 and the second receiving groove 13 are matched with each other through a second conical guide structure 14 for guiding and positioning. The second conical guide structure 14 is identical to the first conical guide structure 6 and will not be described in detail here.

As a preferred embodiment, in order to further improve the stability and accuracy of the telescopic activities of the first insert 2 and the second insert 11, a guide through hole 15 is formed in the bottom of the first accommodating groove 5 along the telescopic direction of the first insert 2, a guide post 16 matched with the guide through hole 15 is arranged on the back of the first insert 2, and the guide post 16 is inserted into the guide through hole 15 and is connected in a matching manner. Similarly, the same guide structure is also adopted between the second insert 11 and the second receiving groove 13.

In particular, the mold cavity structure of the present embodiment can be applied to the blowing of three types of containers:

1. blowing the container with irregular shape; the first insert 2 extends out of the first accommodating groove 5, the container blank starts to be blown, after the container blank is stretched and expanded, the part of the container blank, which is relatively long in radial displacement along the circumferential direction, is in contact with the first insert 2 and is cooled in advance, the ductility of plastic cement of the radially displaced part is reduced, then the first insert 2 retracts into the first accommodating groove 5, the container blank is continuously blown to form a container, and the wall thickness of the blown container is uniform;

2. performing some specific blowing of the container; the first insert 2 extends out of the first accommodating groove 5, the container blank starts to be blown, after the container blank is stretched and expanded, a specific part of the container blank is in contact with the first insert 2, the container blank is cooled in advance, the plastic ductility of the specific part is reduced, then the first insert 2 retracts into the first accommodating groove 5, the container blank is continuously blown to form a container, and the local wall thickness of the container is increased;

3. performing irregular and specific container blowing; the second insert 11 extends out of the second accommodating groove 13, the first insert 2 extends out of the first accommodating groove 5, after the container blank is stretched and expanded, a specific part of the container blank is firstly contacted with the second insert 11, the specific part is cooled in advance, the plastic ductility of the specific part is reduced, and then the second insert 11 retracts into the second accommodating groove 13; the container blank is continuously blown to expand, a relatively long part of the container blank along the circumferential radial displacement is contacted with the first insert 2, the relatively long part of the container blank along the circumferential radial displacement is pre-cooled to slow down the plastic ductility of the part, then the first insert 2 retracts into the first accommodating groove 5, the container blank is continuously blown to form a container, and the container with the uniform integral wall thickness and the local wall thickness increase is formed by blowing.

Based on the mold cavity structure disclosed in the above embodiment, the present embodiment further discloses a bottle blowing mold, which includes a bottom mold and the mold cavity structure, where the bottom mold is used to define the shape of the bottom of the container. The combination between the bottom mold and the above-mentioned mold cavity structure can be performed in any known manner in the art, and will not be described herein.

The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.

Claims

1. A mold cavity structure, characterized by: the mold comprises two mutually matched mold cavity half molds and at least one first mold insert, wherein the mold cavity half molds are provided with first molding surfaces at least limiting part of the main body shape of a container, the first mold insert is provided with second molding surfaces at least limiting part of the main body shape of the container, the first mold insert is movably arranged on the mold cavity half molds, and the mold cavity half molds are provided with first accommodating grooves capable of accommodating the first mold insert; the first insert retracts to the first accommodating groove, the first molding surface and the second molding surface form a molding surface at least limiting the shape of the main body of the container, and a first conical guide structure is arranged between the first insert and the first accommodating groove.

2. A mold cavity structure according to claim 1, wherein: the number of the first conical guide structures is at least two, the two first conical guide structures are transversely or longitudinally arranged, and the two first conical guide structures are symmetrically or adjacently arranged.

3. A cavity structure according to any one of claims 1 or 2, wherein: the first conical guide structure comprises a first inclined surface arranged on the side wall of the first insert and a second inclined surface arranged on the corresponding side wall of the first accommodating groove, and the first inclined surface is matched with the second inclined surface.

4. A mold cavity structure according to claim 3, wherein: the first conical guide structure further comprises a clamping strip arranged on the side wall of the first insert and a clamping position arranged on the side wall of the first accommodating groove, the clamping strip is matched with the clamping position, and the clamping strip and the clamping position are respectively connected to one end, close to the cavity, of the first inclined plane and one end, close to the cavity, of the second inclined plane.

5. The mold cavity structure according to claim 4, wherein: the clamping strip and the clamping position extend outwards from the end part of the first inclined plane and the end part of the second inclined plane respectively.

6. A cavity structure according to any one of claims 1 to 5, wherein: the mold comprises a first mold insert and a second mold insert, wherein the first mold insert is movably arranged on the second mold insert, the second mold insert is provided with a third molding surface at least limiting part of the second molding surface, and the first mold insert is provided with a second accommodating groove capable of accommodating the second mold insert.

7. A mold cavity structure according to claim 6, wherein: and a second conical guide structure is arranged between the second insert and the second accommodating groove.

8. A mold cavity structure according to claim 7, wherein: the second tapered guide structure is the same as the first tapered guide structure.

9. A mold cavity structure according to claim 1, wherein: the bottom of first storage tank is equipped with the direction through-hole along the flexible direction of first mold insert, the back of first mold insert be equipped with the guide post of direction through-hole looks adaptation.

10. The bottle blowing mold is characterized in that: comprising a bottom mold for defining the shape of the bottom of the container and the cavity structure of any one of claims 1-9.