CN209552346U - A kind of flow passage structure and injection mold for injection mold - Google Patents
A kind of flow passage structure and injection mold for injection mold Download PDFInfo
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- CN209552346U CN209552346U CN201920037011.5U CN201920037011U CN209552346U CN 209552346 U CN209552346 U CN 209552346U CN 201920037011 U CN201920037011 U CN 201920037011U CN 209552346 U CN209552346 U CN 209552346U
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- flow passage
- passage structure
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- injection mold
- restricted section
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Abstract
The utility model relates to technical field of injection molding, disclose a kind of flow passage structure and injection mold for injection mold.The flow passage structure includes the restricted section positioned at flow field end and the protection section below restricted section, and restricted section is inverted frustum cone structure.The injection mold includes dynamic model, cover half and above-mentioned flow passage structure, and flow passage structure is arranged in cover half, and the end of section and restricted section is protected to protrude into the type chamber of injection mold.It is additionally provided with protection section below the restricted section of the flow passage structure, the damage of restricted section can be prevented, extends the service life of flow passage structure；In addition, the flow passage structure can not only shorten the formed product period by reducing the taper of cone cell restricted section and increasing the taper of cone cell protection section, additionally it is possible to reduce the cast gate residual on product, improve production efficiency and product quality.
Description
Technical field
The utility model relates to technical field of injection molding, and in particular, to a kind of flow passage structure for injection mold
And injection mold.
Background technique
In existing Shooting Technique, material base is by runner inflow type chamber, for the ease of material base inflow type chamber and limitation material base
The speed of inflow type chamber, flow field end are tapered (as shown in Figure 1).But the end of flow passage structure shown in FIG. 1 is more sharp
It is sharp, it is easy to damage, service life is shorter.In addition, when injection mold is opened, cast gate is not easy-to-draw using flow passage structure shown in Fig. 1
Disconnected, product is not readily separated with material handle, and the formed product period is long, and production efficiency is low.
Utility model content
The purpose of the utility model is to provide a kind of flow passage structure and injection mold for injection mold, the runner knots
Structure not only long service life, convenient for product and material handle separation, additionally it is possible to shorten the formed product period, improve production efficiency.
To achieve the goals above, on the one hand, the utility model provides a kind of flow passage structure for injection mold,
Flow passage structure includes the restricted section positioned at flow field end and the protection section below restricted section, and restricted section is inverted rotary table
Structure.
Preferably, protection section is cylindrical structure.
Preferably, protection section is frustum cone structure.
Preferably, the angle of opposite two bus of restricted section is any angle between 30 °~50 °.
Preferably, the angle for protecting opposite two bus of section is any angle between 80 °~110 °.
Preferably, protect the height of section for any one height in 0.1mm~0.3mm.
On the other hand, the utility model also provides a kind of injection mold, and injection mold includes dynamic model, cover half and above-mentioned
The flow passage structure of any one, flow passage structure is arranged in cover half, and the end of section and restricted section is protected to protrude into injection mold
Type chamber in.
Through the above technical solutions, being additionally provided with protection section below the restricted section of the flow passage structure, current limliting can be prevented
The damage of section, extends the service life of flow passage structure；In addition, the flow passage structure by reduce cone cell restricted section taper with
And increase the taper of cone cell protection section, the formed product period can not only be shortened, additionally it is possible to reduce the cast gate residual on product, mention
High production efficiency and product quality.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of flow passage structure in the prior art；
Fig. 2 is that the part of the end of the flow passage structure for injection mold of an embodiment according to the present utility model is put
Big figure；
Fig. 3 is that the structure of the end of the flow passage structure for injection mold of an embodiment according to the present utility model is shown
It is intended to.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
Fig. 2 is that the part of the end of the flow passage structure for injection mold of an embodiment according to the present utility model is put
Big figure.Fig. 3 is the structural representation of the end of the flow passage structure for injection mold of an embodiment according to the present utility model
Figure.As shown in Figures 2 and 3, in an embodiment of the utility model, a kind of runner knot for injection mold is provided
Structure, the flow passage structure 10 include the protection section 12 positioned at the restricted section 11 of flow field end and positioned at 11 lower section of restricted section, current limliting
Section 11 is inverted frustum cone structure.Protection section 12 for example can be cylindrical structure shown in Fig. 2, be also possible to circle shown in Fig. 3
Platform structure.
Although (flow passage structure shown in FIG. 1 is sharp because of end for traditional flow passage structure that flow passage structure shown in Fig. 2 solves
And the problem of being easy to damage, but there is also following defects: in order to guarantee material base smooth inflow injection mold type chamber 20, figure
The diameter of the cylindric protection section of flow passage structure shown in 2 is unsuitable too small, then the taper of cone cell restricted section is unsuitable too small, thus expects
Size gate end is larger, and the cooling cycle is longer, and the formed product period is long；Additionally, due to material the contact area with product
Greatly, preferably, when cast gate is broken in injection mold die sinking, the cast gate on product remains excessive, shadow to the elasticity of thermoplastic product in addition
Ring product quality.
In order to solve drawbacks described above existing for flow passage structure shown in Fig. 2, in preferred embodiments of the present invention,
Section 12 is protected to use frustum cone structure shown in Fig. 3.Angle (angle shown in Fig. 3 between opposite two bus of restricted section 11
Degree A) it for example can be any angle between 30 °~50 °, preferably 40 °.Protect the folder between opposite two bus of section 12
Angle (angle B shown in Fig. 3) for example can be any angle between 80 °~110 °, and preferably 90 °.Protect the height example of section 12
It such as can be any one height in 0.1mm~0.3mm, preferably 0.2mm.Flow passage structure shown in Fig. 3 is by reducing cone cell
The taper of restricted section and the taper for increasing cone cell protection section shorten the cooling time expected at cast gate, extend product
Cooling time at cast gate, and material is reduced the contact area with product.Wherein, in the present invention, opposite two
Bus is defined as two buses with the central axis of frustum cone structure in the same plane.
A kind of injection mold is additionally provided in an embodiment of the utility model, which may include moving
Mould, cover half and any one above-mentioned flow passage structure 10, flow passage structure 10 are arranged in cover half, protect section 12 and restricted section
11 end is protruded into the type chamber 20 of injection mold.
It since flow passage structure 10 is arranged in the different components of cover half, misplaces in order to prevent, flow passage structure 10 for example can be with
Including the multistage frustum cone structure being separately positioned in different components, transition shoulder is provided between adjacent two sections of frustum cone structures.
By above embodiment, it is additionally provided with protection section below the restricted section of the flow passage structure, current limliting can be prevented
The damage of section, extends the service life of flow passage structure；In addition, the flow passage structure by reduce cone cell restricted section taper with
And increase the taper of cone cell protection section, it shortens the cooling time expected at cast gate, extend cooling of the product at cast gate
Time, and material is reduced the contact area with product, and in thermoplastic product production process, expect after gate end is cooled down i.e.
It can be opened, when die sinking breaks cast gate, therefore this flow passage structure can not only shorten the formed product period, and can reduce
Cast gate residual on product.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.Additionally need explanation
It is specific technical features described in the above specific embodiments, it in the case of no contradiction, can be by any
Suitable mode is combined, and in order to avoid unnecessary repetition, the utility model is no longer another to various combinations of possible ways
Row explanation.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (7)
1. a kind of flow passage structure for injection mold, which is characterized in that the flow passage structure (10) includes being located at the runner
The restricted section (11) of end and the protection section (12) being located at below the restricted section (11), the restricted section (11) are inverted
Frustum cone structure.
2. flow passage structure according to claim 1, which is characterized in that the protection section (12) is cylindrical structure.
3. flow passage structure according to claim 1, which is characterized in that the protection section (12) is frustum cone structure.
4. flow passage structure according to claim 3, which is characterized in that opposite two bus of the restricted section (11)
Angle is any angle between 30 °~50 °.
5. flow passage structure according to claim 4, which is characterized in that opposite two bus of protection section (12)
Angle is any angle between 80 °~110 °.
6. flow passage structure according to claim 5, which is characterized in that it is described protection section (12) height be 0.1mm~
Any one height in 0.3mm.
7. a kind of injection mold, the injection mold includes described in any one in dynamic model, cover half and claim 1 to 6
Flow passage structure (10), the flow passage structure (10) is arranged in the cover half, the protection section (12) and the restricted section
(11) end is protruded into the type chamber of the injection mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037011.5U CN209552346U (en) | 2019-01-09 | 2019-01-09 | A kind of flow passage structure and injection mold for injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037011.5U CN209552346U (en) | 2019-01-09 | 2019-01-09 | A kind of flow passage structure and injection mold for injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209552346U true CN209552346U (en) | 2019-10-29 |
Family
ID=68305878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920037011.5U Active CN209552346U (en) | 2019-01-09 | 2019-01-09 | A kind of flow passage structure and injection mold for injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209552346U (en) |
-
2019
- 2019-01-09 CN CN201920037011.5U patent/CN209552346U/en active Active
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