CN201998393U - Injection molding die structure of 45-DEG three-way water-drainage pipe fittings - Google Patents
Injection molding die structure of 45-DEG three-way water-drainage pipe fittings Download PDFInfo
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- CN201998393U CN201998393U CN2011201311194U CN201120131119U CN201998393U CN 201998393 U CN201998393 U CN 201998393U CN 2011201311194 U CN2011201311194 U CN 2011201311194U CN 201120131119 U CN201120131119 U CN 201120131119U CN 201998393 U CN201998393 U CN 201998393U
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- die
- glue
- drainage tube
- tube part
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Abstract
The utility model discloses an injection molding die structure of 45-DEG three-way water-drainage pipe fittings, belonging to the technical field of pipe fitting molding dies and comprising a die shell and a die core matched with the die shell, wherein the die shell is internally provided with a 45-DEG hot runner, the end head of the hot runner is provided with three pouring gates connected with a die cavity, and the top of the die shell is provided with an injection molding inlet in a matching way. In the utility model, a hot runner glue introduction technology is adopted, therefore, overlong runner or glue introduction decentration is avoided, injection and glue introduction resistances are reduced, the internal stress of a product is effectively reduced, and the stress deformation of the product is reduced; a scientific pouring gate design scheme is analyzed by applying a die flow analysis technology, a glue introduction mode that the thicknesses of walls near the pouring gates are small and the thicknesses of the walls far away from the pouring gates are large is adopted at an annular transitional pouring gate to ensure that glue introduction is simultaneously carried out at all ports, material flow direction and speed are consistent and stable, the molecular orientations inside products are consistent, generated contraction deformation is consistent, and therefore, the out-of-roundness is reduced, and the quality is stable and reliable.
Description
Technical field
The utility model patent belongs to the formation of tubes technical field of mold, is specifically related to a kind of 45 ° of threeway water-drainage tube part injection forming mold structures.
Background technology
The use field of PE pipe is extensive, and special is the regeneration product of polyvinyl-chloride drainage pipe and cast iron pipe drainpipe in the draining field.In recent years the PE pipeline has obtained development rapidly at drainage pipeline, so the requirement aspect pipe fitting also more and more trends towards functionalization, the fit dimension precision of all kinds of pipe fittings is had higher requirement.
45 ° of threeways of PE water-drainage tube part are applied in the construction drainage, and connected mode mainly adopts the hot melt butt joint to be connected two kinds with electric smelting.As water-drainage tube part, wall thickness is generally SDR21 and SDR26 series.Particularly at big specification product, with the D160 specification is example, common mould gate advances the glue design can cause that into the glue resistance is big, it is inhomogeneous to advance glue, causes the product stress deformation serious, and it is bigger to show as the product out-of-roundness, this is very disadvantageous to the connected mode that adopts the hot melt butt joint, occur the welding dislocation easily, influence the connection reliability of product, have hidden danger of quality.By introducing the mold flow analysis technology, science design hot flow path advances the glue pouring gate structure, can effectively control into glue uniformity, makes that into the glue orientation is even, reduces internal stress, and the product stress deformation is little, injection moulding dimensional accuracy height.
Summary of the invention
At the above-mentioned problems in the prior art, the objective of the invention is to design the technical scheme that 45 ° of threeway injection forming molds of a kind of PE water-drainage tube part are provided, the product size, the steady quality, reliable that adopt this mould to make.
Described 45 ° of threeway water-drainage tube part injection forming mold structures, comprise mould housing and the core rod that is mated, it is characterized in that being provided with in the described mould housing 45 ° hot flow path, the termination of hot flow path is provided with three cast gates that are connected with die cavity, and the mould housing top is equipped with the injection moulding import.
Described 45 ° of threeway water-drainage tube part injection forming mold structures is characterized in that described hot flow path comprises flow distribution plate and is arranged on heating collar on the flow distribution plate, and heating collar is connected with external power by the power interface of mould housing side.
Described 45 ° of threeway water-drainage tube part injection forming mold structures is characterized in that the wall thickness of described annular transition cast gate place near cast gate, and are thick away from the wall thickness of cast gate.
Described 45 ° of threeway water-drainage tube part injection forming mold structures is characterized in that being equipped with the import cover in the described injection moulding import.
45 ° of above-mentioned threeway water-drainage tube part injection forming mold structures, comprise mould housing and the core rod that is mated, be provided with 45 ° hot flow path in the described mould housing, the termination of hot flow path is provided with three cast gates that are connected with die cavity, and the mould housing top is equipped with the injection moulding import.The utility model is quoted hot flow path and is advanced the glue technology, avoids runner long or advance glue off-centre, reduces injection moulding and advances the glue resistance, effectively reduces the product internal stress, reduces the product stress deformation; By the mold flow analysis technology, the cast gate design of analysis science adopts three cast gates to advance the rubber moulding formula simultaneously, shortens the filling time, helps temperature, the orientation of three ports, the uniformity of stress, thereby reduces the out-of-roundness of product; Adopt wall thickness near cast gate at annular transition cast gate place, away from the wall thickness of cast gate thick advance the rubber moulding formula, guarantee that port advances glue everywhere simultaneously, make the materials flow direction, speed is consistent stablizes, make and produce product interior molecules orientation unanimity and shrink the deformation unanimity, thereby reduce out-of-roundness.Adopt hot flow path to advance the glue technology and cooperate three cast gates of annular transition cast gate to advance glue, the product stress that makes is little, and orientation is consistent, and contraction distortion is little, dimensionally stable, and out-of-roundness can be controlled in the product margin of tolerance.Steady quality, reliable.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model hot flow path structural representation.
Among the figure: 1-mould housing, 2-injection moulding import, 3-flow distribution plate, 4-heating collar, 5-cast gate, 6-die cavity, 7-power interface.
The specific embodiment
The invention will be further described below in conjunction with Figure of description, and provide the specific embodiment.
Shown in Fig. 1-2; 45 ° of threeway water-drainage tube part injection forming mold structures; comprise mould housing 1 and the core rod that is mated; be provided with 45 ° hot flow path in the described mould housing 1; the termination of hot flow path is provided with three cast gates 5 that are connected with die cavity 6; mould housing 1 top is equipped with injection moulding import 2; described hot flow path comprises flow distribution plate 3 and is arranged on heating collar 4 on the flow distribution plate 3; heating collar 4 is connected with external power by the power interface 7 of mould housing (1) side; be used for heating and insulation colloid; in order to protect the injection moulding import, increase the service life, be equipped with the import cover in the described injection moulding import 2.
These 45 ° of threeway water-drainage tube part injection forming mold structures have added hot flow path, avoid runner long or advance the glue eccentricity issues, reduce injection moulding and advance the glue resistance, effectively reduce the product internal stress, reduce the product stress deformation; By introducing the mold flow analysis technology, analyse rational cast gate design scientifically, adopt three cast gates to advance the rubber moulding formula simultaneously, the shortening filling time, help temperature, the orientation of three ports, the uniformity of stress, thereby reduce the out-of-roundness of product; Select the more rational annular transition cast gate of glue, adopt the nearly cast gate thick uniform annular transition cast gate of glue wall thickness transition profile that advances of cast gate thin, far away to advance the rubber moulding formula, guaranteeing that the glue direction is advanced in materials flow, speed is consistent stablizes, and makes product interior molecules orientation unanimity to produce volume contraction deformation unanimity; Verify by mold flow analysis, adopting hot flow path to advance the glue technology, to cooperate the rubber moulding formula of advancing of annular transition pouring gate structure be scientific and effective, this advances the design of rubber moulding formula and helps reducing into glue resistance, make that the product internal stress is little, the distribution of orientations unanimity, dimensionally stable, out-of-roundness can be controlled in the product margin of tolerance.Adopt constant product quality that this mould makes, reliable.
Claims (4)
1.45 ° threeway water-drainage tube part injection forming mold structure, comprise mould housing (1) and the core rod that is mated, it is characterized in that being provided with 45 ° hot flow path in the described mould housing (1), the termination of hot flow path is provided with three cast gates (5) that are connected with die cavity (6), and mould housing (1) top is equipped with injection moulding import (2).
2. 45 ° of threeway water-drainage tube part injection forming mold structures according to claim 1, it is characterized in that described hot flow path comprises flow distribution plate (3) and is arranged on heating collar (4) on the flow distribution plate (3), heating collar (4) is connected with external power by the power interface (7) of mould housing (1) side.
3. 45 ° of threeway water-drainage tube part injection forming mold structures according to claim 1 is characterized in that the wall thickness of described annular transition cast gate place near cast gate (5), and are thick away from the wall thickness of cast gate (5).
4. 45 ° of threeway water-drainage tube part injection forming mold structures according to claim 1 is characterized in that being equipped with the import cover in the described injection moulding import (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201311194U CN201998393U (en) | 2011-04-29 | 2011-04-29 | Injection molding die structure of 45-DEG three-way water-drainage pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201311194U CN201998393U (en) | 2011-04-29 | 2011-04-29 | Injection molding die structure of 45-DEG three-way water-drainage pipe fittings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201998393U true CN201998393U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201311194U Expired - Lifetime CN201998393U (en) | 2011-04-29 | 2011-04-29 | Injection molding die structure of 45-DEG three-way water-drainage pipe fittings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201998393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110709226A (en) * | 2017-06-02 | 2020-01-17 | 株式会社普利司通 | Resin member |
-
2011
- 2011-04-29 CN CN2011201311194U patent/CN201998393U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110709226A (en) * | 2017-06-02 | 2020-01-17 | 株式会社普利司通 | Resin member |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |