CN202965090U - Cold runner structure - Google Patents
Cold runner structure Download PDFInfo
- Publication number
- CN202965090U CN202965090U CN 201220717041 CN201220717041U CN202965090U CN 202965090 U CN202965090 U CN 202965090U CN 201220717041 CN201220717041 CN 201220717041 CN 201220717041 U CN201220717041 U CN 201220717041U CN 202965090 U CN202965090 U CN 202965090U
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- Prior art keywords
- runner
- communicated
- bridging
- sprue
- flow passage
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Abstract
The utility model discloses a cold runner structure which comprises a main runner and a branch runner communicated with the main runner, wherein a runner turning structure is arranged between connectors of the main runner and the branch runner, an inlet of the runner turning structure is hermetically communicated with the main runner, and two outlets of the runner turning structure are respectively communicated with the branch runner hermetically. According to the cold runner structure, the runner turning structure is adopted between the main runner and the branch runner or between the last branch runner and next branch runner, so as to drive the rubber liquid of molten plastic to be filled to turn in the runner, the rubber liquid with high temperature is turned in the runner so as to enable the temperature of the rubber liquid in the branch runners to be even, the temperature and viscosity of the rubber liquid in the runner can be conveniently mastered, all cavities can be filled evenly, and products of all cavities can be consistent.
Description
Technical field
The utility model relates to a kind of mold injection running gate system, relates in particular to the cold runner structure in a kind of mold injection running gate system.
Background technology
In the design of the cast gate of multi-cavity mold, technology commonly used has side type to advance to water and submarine advances to water two kinds, wherein side type advance to water into general, use history more of a specified duration; Sub marine gate is located at the one-sided of dynamic model or cover half usually, and it can be placed in inner surface or the shelter, side of plastic, also can be placed on the muscle, post of plastic, also can be placed on die joint.Sub marine gate is generally the bullet shape, and has a certain degree with die cavity, is often 20 degree to 45 degree °, and the advantage of sub marine gate is as follows: 1, the charging cast gate is general all in inner surface or the shelter, side of plastic, does not affect products appearance; 2, after product molding, when ejecting can with the plastic automatic breaking, be easy to realize the production automation; 3, because sub marine gate can be arranged on muscle that product surface can not see, post, can not stay the gentle line of spray trace that brings due to injection at product surface during moulding.Can directly finished product model and runner model be disconnected because submarine advances to water when the withdrawing pattern, reduce the time of cutting gate, secondary operations, therefore be usually used in the mould of multimode cave (die cavity is also referred to as die cavity, more than general reference eight die cavitys of multimode cave).The cold runner system of eight die cavity moulds of sub marine gate uses more general in injection moulding is produced at present, but eight die cavitys of this sub marine gate or above mould exist imbalance of flow and part strength in the larger shortcoming of die cavity difference, its reason is, when molten plastic flowed in runner, its shearing rate, temperature, viscosity can change with the difference of molten plastic in the flow direction position.Traditional runner structure easily causes imbalance of flow, and the viscosity of each die cavity, Temperature Distribution, pressure distribution are different, also just causes the product of each die cavity also not identical simultaneously.
As shown in Figure 1 be traditional cold runner structure, glue, and then is flowed through to secondary runner 3 to one-level runner 2 through sprue 1, then flow to three fraction runners 4, last glue arrives the die cavity 5 of mould.Because mold temperature is lower than glue temperature, and in the runner table, temperature differs, the glue of the both sides of close mould is in low temperature, glue in the middle of runner is in high temperature, after glue is forked to runners at different levels, because the temperature of die cavity both sides is low, molten plastic is solidified in advance, and uncured molten plastic can form on the molten plastic top layer of solidifying high montage district, its temperature that produces with the molten plastic friction of solidifying might make the temperature in this high montage district be higher than in the middle of the temperature of molten plastic, be difficult for controlling temperature and viscosity.Runner structure as shown in Figure 1, the flow path from cast gate to each die cavity is identical, for the die cavity balanced design provides possibility, but still can not solve the problem of mold filling balance fully.
The utility model content
The technical problems to be solved in the utility model is in order to overcome technological deficiency recited above, to provide.
In order to solve technical problem recited above, the utility model is taked following technical scheme:
A kind of cold runner structure, the runner that includes sprue and be communicated with sprue, be provided with the upset flow passage structure between the connector of described sprue and runner, the inlet seal of described upset flow passage structure is communicated with sprue, and two outlets of upset flow passage structure sealing respectively are communicated with runner.
Described upset flow passage structure further includes the first bridging runner and the second bridging runner that misplaces up and down and be interconnected, the inlet seal of described the first bridging runner is communicated with sprue, the exit seal of described the first bridging runner is communicated with the import of the second bridging runner, and two outlets of the second bridging runner sealing respectively are communicated with runner.
Described the first bridging runner is set to misplace up and down with the second bridging runner and is mutually vertical.
One end of described the first bridging runner offers the import that is communicated with sprue, and the other end of the first bridging runner offers the outlet that is communicated with the second bridging runner.
The import of described the first bridging runner is communicated with for misplacing up and down with sprue.
Described runner further include have upper and lower level minute first order runner, second level runner ..., and N fraction runner, N 〉=2 wherein, be provided with the upset flow passage structure between the connector of upper level runner and next stage runner, the inlet seal of described upset flow passage structure is communicated with the upper level runner, and two outlets of upset flow passage structure sealing respectively are communicated with the next stage runner.This upset flow passage structure is identical with overturn structure between sprue and runner.
The cold runner structure that the utility model provides, adopting the upset flow passage structure between sprue and runner or between upper level runner and next stage runner, the glue that orders about the molten plastic that needs filling overturns in runner, the higher glue of temperature is stirred in runner, and then make the glue temperature of each branch's runner more even, be convenient to control temperature and the viscosity of the glue in runner, each die cavity can balancedly be filled, guarantee that each die cavity product out is consistent.
Description of drawings
Fig. 1 is traditional cold runner structure schematic diagram.
Fig. 2 is the structural representation at the first visual angle of the present utility model.
Fig. 3 is the structural representation at the second visual angle of the present utility model.
The specific embodiment
See also Fig. 2 and Fig. 3, as shown in the figure, a kind of cold runner structure, the runner 12 that includes sprue 11 and be communicated with sprue 11, be provided with the upset flow passage structure between the connector of sprue 11 and runner 12, the inlet seal of upset flow passage structure is communicated with sprue 11, and two outlets of upset flow passage structure sealing respectively are communicated with runner 12.
The upset flow passage structure further includes the first bridging runner 13 and the second bridging runner 14 that misplaces up and down and be interconnected, the first bridging runner is set to misplace up and down with the second bridging runner and is mutually vertical, the inlet seal of the first bridging runner 13 is communicated with sprue 11, the exit seal of the first bridging runner 13 is communicated with the import of the second bridging runner 14, and two outlets of the second bridging runner 14 sealing respectively are communicated with runner 12.One end of the first bridging runner offers the import that is communicated with sprue, and the other end of the first bridging runner offers the outlet that is communicated with the second bridging runner.The import of the first bridging runner is communicated with for misplacing up and down with sprue.
Runner further include have upper and lower level minute first order runner, second level runner ..., and N fraction runner, N 〉=2 wherein, be provided with the upset flow passage structure between the connector of upper level runner and next stage runner, the inlet seal of upset flow passage structure is communicated with the upper level runner, and two outlets of upset flow passage structure sealing respectively are communicated with the next stage runner.This upset flow passage structure is identical with overturn structure between sprue and runner.
Operation principle of the present utility model: the glue of molten plastic prolongs a direction from sprue and flows to the first bridging runner, and prolong b, c direction and overturn for the first time and flow to the first bridging runner after break-in, then glue prolongs the first bridging runner and flows to the second bridging runner, and prolong the d direction and overturn for the second time and flow to the second bridging runner after variable body, two outlets by the second bridging runner after the glue in the second bridging runner mixes through this twice upset variable body flow to runner.
Claims (6)
1. cold runner structure, the runner that includes sprue and be communicated with sprue, it is characterized in that: be provided with the upset flow passage structure between the connector of described sprue and runner, the inlet seal of described upset flow passage structure is communicated with sprue, and two outlets of upset flow passage structure sealing respectively are communicated with runner.
2. cold runner structure as claimed in claim 1, it is characterized in that: described upset flow passage structure further includes the first bridging runner and the second bridging runner that misplaces up and down and be interconnected, the inlet seal of described the first bridging runner is communicated with sprue, the exit seal of described the first bridging runner is communicated with the import of the second bridging runner, and two outlets of the second bridging runner sealing respectively are communicated with runner.
3. cold runner structure as claimed in claim 2 is characterized in that: described the first bridging runner is set to misplace up and down with the second bridging runner and is mutually vertical.
4. cold runner structure as claimed in claim 2, it is characterized in that: an end of described the first bridging runner offers the import that is communicated with sprue, and the other end of the first bridging runner offers the outlet that is communicated with the second bridging runner.
5. cold runner structure as claimed in claim 2 is characterized in that: the import of described the first bridging runner and sprue are communicated with for dislocation up and down.
6. cold runner structure as claimed in claim 1, it is characterized in that: described runner further include have upper and lower level minute first order runner, second level runner ..., and N fraction runner, N 〉=2 wherein, be provided with the upset flow passage structure between the connector of upper level runner and next stage runner, the inlet seal of described upset flow passage structure is communicated with the upper level runner, and two outlets of upset flow passage structure sealing respectively are communicated with the next stage runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717041 CN202965090U (en) | 2012-12-06 | 2012-12-06 | Cold runner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220717041 CN202965090U (en) | 2012-12-06 | 2012-12-06 | Cold runner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202965090U true CN202965090U (en) | 2013-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220717041 Expired - Fee Related CN202965090U (en) | 2012-12-06 | 2012-12-06 | Cold runner structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202965090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753771A (en) * | 2013-12-27 | 2014-04-30 | 中山市利群精密实业有限公司 | Runner system capable of feeding glue uniformly |
| WO2021174461A1 (en) * | 2020-03-04 | 2021-09-10 | 金发科技股份有限公司 | Mold injection system for multi-cavity product |
-
2012
- 2012-12-06 CN CN 201220717041 patent/CN202965090U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753771A (en) * | 2013-12-27 | 2014-04-30 | 中山市利群精密实业有限公司 | Runner system capable of feeding glue uniformly |
| WO2021174461A1 (en) * | 2020-03-04 | 2021-09-10 | 金发科技股份有限公司 | Mold injection system for multi-cavity product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131206 |