CN203427308U - Novel hard PVC (Poly Vinyl Chloride) die for spiral pipe - Google Patents
Novel hard PVC (Poly Vinyl Chloride) die for spiral pipe Download PDFInfo
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- CN203427308U CN203427308U CN201320424578.0U CN201320424578U CN203427308U CN 203427308 U CN203427308 U CN 203427308U CN 201320424578 U CN201320424578 U CN 201320424578U CN 203427308 U CN203427308 U CN 203427308U
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- hard pvc
- pvc
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Abstract
The utility model relates to the technical field of pipes and more particularly relates to a novel hard PVC (Poly Vinyl Chloride) die for a spiral pipe. The novel hard PVC die for the spiral pipe comprises a PVC die main body and a hard PVC runner arranged in the PVC die main body, wherein a guiding runner is arranged at an extruding opening of the hard PVC runner; a dovetail groove is arranged in the guiding runner. According to the novel hard PVC die for the spiral pipe, a hard PVC ingredient can densely and uniformly flow out in a whole strip shape in the extruding process, so that the whole strength of the pipe is improved and the quality of the pipe is also improved.
Description
Technical field
The utility model relates to the technical field of tubing, more specifically, relates to a kind of Novel spiral coil hard PVC mouth mould.
Background technology
Existing PVC helix tube processing method is by the processing respectively on 2 extruders of 2 kinds of formulas, these 2 kinds of material are respectively hard PVC and flexible PVC batching, wherein hard PVC material becomes cylinder or rectangle, flexible PVC material into strips, then 2 groups of material enter into composite machine head and are entwined type after first compound, because flexible PVC strip ratio is easier to control, hard PVC material is mainly the effect of reinforcement at helix tube, the quality of whole piece helix tube is also determined by hard PVC, so the hardness of hard PVC and the quality of moulding directly affect the quality of product.
Summary of the invention
The utility model is intended to solve the problems of the technologies described above at least to a certain extent.
The purpose of this utility model is to provide a kind of Novel spiral coil hard PVC mouth mould, and this mouthful of mould can allow hard PVC batching when extruding, closely become uniformly whole strip to flow out, and improves the bulk strength of tubing, also improved the quality of tubing.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of Novel spiral coil hard PVC mouth mould, comprise PVC mouth mould main body, be located at the hard PVC runner in PVC mouth mould main body, wherein, the extrusion place of hard PVC runner is provided with pilot flow, is provided with dovetail groove in pilot flow.The length of described pilot flow is greater than 15mm.
This novel mouthful of mould is at hard material extrusion neck ring mold end, to increase the dovetail groove special cross-section of pilot flow and back-off effect.The length of its pilot flow is not less than 15mm, length may cause heat radiation not in time not, can produce bubble or bonding, concrete length can determine according to different specifications and ratio soft, hard batching, because the cross section of pilot flow is the same, hard PVC can Homogeneouslly-radiating when flowing through pilot flow, reduce heat distortion amount, allows the hard material of flow export mould more closely become uniformly whole strip to flow out.
Described hard PVC runner be shaped as taper, the cross section of described dovetail groove is 2 swallowtail shapes, 2 swallowtail shapes are axially symmetrical arranged.Its pilot flow is partly dovetail groove special cross-section, dovetail groove cross section inwardly concaves in circular cross section both sides, soft, the hard material of PVC is at compound tense, soft material can be inserted in the dovetail groove of both sides fast, make that PVC is soft, the adhesive surface of hard material is than originally greatly increasing, thereby can improve the bulk strength of the adhesion of soft, hard PVC batching.Helix tube own wt is larger, and packing is coiled into discoid often, therefore, the outside of tubing is subject to larger tension, in coiling packing, lifting or transport process, produce vibration, if degree of adhesion soft, hard PVC batching is not high, the situation such as be not easy to occur cruelly splitting.
Compared with prior art, beneficial effect is: the utility model can allow hard PVC batching when extruding, closely become uniformly whole strip to flow out, and improves the bulk strength of tubing, has also improved the quality of tubing.
Accompanying drawing explanation
Fig. 1 is overall structure schematic cross-section of the present utility model.
Fig. 2 is side-looking structural representation of the present utility model.
Fig. 3 is perspective view of the present utility model.
Fig. 4 is soft, hard PVC compound cross-section schematic diagram of the present utility model.
The specific embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent; For better explanation the present embodiment, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing some known features and explanation thereof may to omit be understandable.In accompanying drawing, describe position relationship only for exemplary illustration, can not be interpreted as the restriction to this patent.
As Figure 1-4, a kind of Novel spiral coil hard PVC mouth mould, comprises PVC mouth mould main body, is located at the hard PVC runner 3 in PVC mouth mould main body, and wherein, the extrusion place of hard PVC runner 3 is provided with pilot flow 2, is provided with dovetail groove 1 in pilot flow 2.In Fig. 1, the length a of pilot flow 2 is greater than 15mm, hard PVC runner 3 be shaped as taper, in Fig. 2, the cross section of dovetail groove 1 is 2 swallowtail shapes, 2 swallowtail shapes are axially symmetrical arranged.
This novel mouthful of mould is at hard material extrusion neck ring mold end, to increase dovetail groove 1 special cross-section of pilot flow 2 and back-off effect.The length of its pilot flow 2 is not less than 15mm, length may cause heat radiation not in time not, can produce bubble or bonding, concrete length can determine according to different specifications and ratio soft, hard batching, because the cross section of pilot flow is the same, hard PVC can Homogeneouslly-radiating when flowing through pilot flow 2, reduce heat distortion amount, allows the hard material of flow export mould more closely become uniformly whole strip to flow out.
This mouthful of mould is installed in helix tube mould, and after start operation, the hard PVC material runner 3 of flowing through, then pass through pilot flow 2, in Fig. 4, forms after outlet mold closely that hard PVC material 5 is compound with flexible PVC material 4 uniformly.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in the protection domain of the utility model claim.
Claims (4)
1. a Novel spiral coil hard PVC mouth mould, comprise PVC mouth mould main body, be located at the hard PVC runner (3) in PVC mouth mould main body, it is characterized in that, the extrusion place of hard PVC runner (3) is provided with pilot flow (2), is provided with dovetail groove (1) in pilot flow (2).
2. a kind of Novel spiral coil hard PVC mouth mould according to claim 1, is characterized in that, the length of described pilot flow (2) is greater than 15mm.
3. a kind of Novel spiral coil hard PVC mouth mould according to claim 2, is characterized in that, described hard PVC runner (3) be shaped as taper.
4. a kind of Novel spiral coil hard PVC mouth mould according to claim 3, is characterized in that, the cross section of described dovetail groove (1) is 2 swallowtail shapes, and 2 swallowtail shapes are axially symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320424578.0U CN203427308U (en) | 2013-07-17 | 2013-07-17 | Novel hard PVC (Poly Vinyl Chloride) die for spiral pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320424578.0U CN203427308U (en) | 2013-07-17 | 2013-07-17 | Novel hard PVC (Poly Vinyl Chloride) die for spiral pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203427308U true CN203427308U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320424578.0U Expired - Lifetime CN203427308U (en) | 2013-07-17 | 2013-07-17 | Novel hard PVC (Poly Vinyl Chloride) die for spiral pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203427308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827643A (en) * | 2015-05-05 | 2015-08-12 | 苏州井上橡塑有限公司 | Extruder mold head |
-
2013
- 2013-07-17 CN CN201320424578.0U patent/CN203427308U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104827643A (en) * | 2015-05-05 | 2015-08-12 | 苏州井上橡塑有限公司 | Extruder mold head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
|
| CX01 | Expiry of patent term |