CN215791639U - PET extrusion foaming die lip - Google Patents
PET extrusion foaming die lip Download PDFInfo
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- CN215791639U CN215791639U CN202121856875.3U CN202121856875U CN215791639U CN 215791639 U CN215791639 U CN 215791639U CN 202121856875 U CN202121856875 U CN 202121856875U CN 215791639 U CN215791639 U CN 215791639U
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Abstract
The utility model provides a PET extrusion foaming die lip, which changes the extrusion holes of the die lip from round to hexagonal, so that the clearance between subsequent foaming strips becomes smaller, the probability of causing clearance is greatly reduced, and the yield can be well improved. It includes: a die lip body; the die lip comprises a die lip body and is characterized in that a plurality of extrusion holes penetrating in the thickness direction are formed in the middle surface area of the die lip body, the upper part of each extrusion hole in the thickness direction is a hexagonal extrusion hole, the lower part of each extrusion hole in the thickness direction is a circular hole, the diameter of each circular hole is larger than the equivalent diameter of each hexagonal extrusion hole, and the circular holes and the hexagonal extrusion holes are in 45-degree frustum-like transition; and two sides of the die lip body, which correspond to the extrusion hole area, are respectively provided with a through positioning hole, and the through positioning holes are used for fixedly mounting the die lip body on a die.
Description
Technical Field
The utility model relates to the technical field of processing of foamed plates, in particular to a PET extrusion foaming die lip.
Background
PET extrusion foaming is a foaming mode, which is an extrusion plate foaming mode with strip foam fused, a plurality of circular foaming strips are extruded through an extruder head and a die lip, and then the circular foaming strips are adhered together to form the required foaming plate due to foaming expansion after being separated from a die. Because the extruded circular foaming strips are round, when the foaming strips are bonded, gaps are easily formed in the bonding among the four foaming strips due to the influence of the round shape, and thus waste products are easily caused.
Disclosure of Invention
Aiming at the problems, the utility model provides the PET extrusion foaming die lip, the extrusion holes of the die lip are changed into a hexagon from a circle, the gaps among subsequent foaming strips become small, the probability of gaps is greatly reduced, and the yield can be well improved.
A PET extrusion foaming die lip, characterized in that it comprises:
a die lip body;
the die lip comprises a die lip body and is characterized in that a plurality of extrusion holes penetrating in the thickness direction are formed in the middle surface area of the die lip body, the upper part of each extrusion hole in the thickness direction is a hexagonal extrusion hole, the lower part of each extrusion hole in the thickness direction is a circular hole, the diameter of each circular hole is larger than the equivalent diameter of each hexagonal extrusion hole, and the circular holes and the hexagonal extrusion holes are in 45-degree frustum-like transition;
and two sides of the die lip body, which correspond to the extrusion hole area, are respectively provided with a through positioning hole, and the through positioning holes are used for fixedly mounting the die lip body on a die.
It is further characterized in that:
the extrusion holes form a plurality of rows of holes, and each adjacent row of extrusion holes are arranged in a staggered manner;
the thickness section of the die lip body is also provided with heat conduction oil channels, and the heat conduction oil channels are respectively arranged at two sides of the hexagonal extrusion holes and used for cooling the material;
the periphery of the lower surface of the die lip body, which corresponds to the extrusion hole area, is provided with a sealing bulge in a closed shape, and the sealing bulge is matched and assembled with the lower die to ensure the sealing of the extrusion hole area during extrusion.
After adopting above-mentioned technical scheme, through will extruding the hole and being provided with the hexagon and extrude the hole, it compare with circular extrusion hole, the gap that the contact produced between the foaming strip diminishes, bonding that can be better each other to reduced waste product and wastrel rate, the quality and the stability of product have obtained the assurance.
Drawings
FIG. 1 is a schematic perspective view (with a longitudinal section) of the present invention;
FIG. 2 is an enlarged profile schematic view of an extrusion orifice of the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
the die lip comprises a die lip body 10, an extrusion hole 20, a hexagonal extrusion hole 21, a circular hole 22, a frustum cone-like transition 23, a through positioning hole 30, a heat conduction oil channel 40 and a sealing bulge 50.
Detailed Description
A PET extrusion foaming die lip, see fig. 1 and 2, comprising a die lip body 10; a plurality of extrusion holes 20 penetrating in the thickness direction are formed in the middle surface area of the die lip body 10, the upper part of each extrusion hole 20 in the thickness direction is a hexagonal extrusion hole 21, the lower part of each extrusion hole 20 in the thickness direction is a circular hole 22, the diameter of each circular hole 22 is larger than the equivalent diameter of each hexagonal extrusion hole 21, and a 45-degree frustum-shaped transition 23 is formed between each circular hole 22 and each hexagonal extrusion hole 21;
two sides of the die lip body 10 corresponding to the extrusion hole area are respectively provided with a through positioning hole 30, and the through positioning holes 30 are used for fixedly mounting the die lip body on a die.
In specific implementation, as shown in fig. 1 and fig. 2, a plurality of rows of extrusion holes 10 which are arranged in a staggered manner are formed in the middle surface area of a die lip body 10, a PET fluid firstly passes through a large-diameter circular hole 22 in the die lip and then enters a hexagonal extrusion hole 21 through a 45-degree angle cone frustum transition 23, extruded foaming strips are in a hexagonal state after exiting from a die and then are close to each other for bonding along with continuous foaming expansion, and gaps among the foaming strips are reduced;
two rows of symmetrically arranged through positioning holes 30 are formed on the two sides of the die lip body 10 corresponding to the extrusion holes 20 and are used for fixing the die lip on a die;
the thickness section of the die lip body 10 is also provided with a heat conduction oil channel 40, and the positions of the heat conduction oil channel 40 in the thickness direction are respectively arranged at two sides of the hexagonal extrusion hole 21 and are used for cooling the material;
the periphery of the lower surface of the die lip body 10 corresponding to the extrusion orifice area is provided with a sealing protrusion 50 in a closed shape, and the sealing protrusion 50 is assembled with the lower die in a matching manner to ensure the sealing of the extrusion orifice area during extrusion.
The principle is as follows: through will extrude the hole and be provided with the hexagon and extrude the hole, it compare with circular extrusion hole, the gap that the contact produced between the foaming strip diminishes, bonding that can be better each other to reduced waste product and wastrel rate, the quality and the stability of product have obtained the assurance.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A PET extrusion foaming die lip, characterized in that it comprises:
a die lip body;
the die lip comprises a die lip body and is characterized in that a plurality of extrusion holes penetrating in the thickness direction are formed in the middle surface area of the die lip body, the upper part of each extrusion hole in the thickness direction is a hexagonal extrusion hole, the lower part of each extrusion hole in the thickness direction is a circular hole, the diameter of each circular hole is larger than the equivalent diameter of each hexagonal extrusion hole, and the circular holes and the hexagonal extrusion holes are in 45-degree frustum-like transition;
and two sides of the die lip body, which correspond to the extrusion hole area, are respectively provided with a through positioning hole, and the through positioning holes are used for fixedly mounting the die lip body on a die.
2. A PET extrusion foaming die lip as claimed in claim 1, wherein: the extrusion holes form a plurality of rows of holes, and each adjacent row of extrusion holes are arranged in a staggered mode.
3. A PET extrusion foaming die lip as claimed in claim 1, wherein: the die lip is characterized in that a heat conduction oil channel is further arranged on the thickness section of the die lip body, and the heat conduction oil channels are respectively arranged on two sides of the hexagonal extrusion hole.
4. A PET extrusion foaming die lip as claimed in claim 1, wherein: the periphery of the lower surface of the die lip body, which corresponds to the extrusion hole area, is provided with a sealing bulge in a closed shape, and the sealing bulge is assembled with the lower die in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121856875.3U CN215791639U (en) | 2021-08-10 | 2021-08-10 | PET extrusion foaming die lip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121856875.3U CN215791639U (en) | 2021-08-10 | 2021-08-10 | PET extrusion foaming die lip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215791639U true CN215791639U (en) | 2022-02-11 |
Family
ID=80129763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121856875.3U Active CN215791639U (en) | 2021-08-10 | 2021-08-10 | PET extrusion foaming die lip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215791639U (en) |
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2021
- 2021-08-10 CN CN202121856875.3U patent/CN215791639U/en active Active
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