CN209240398U - A kind of filling balanced structure of a multi-cavity mold injection molding - Google Patents
A kind of filling balanced structure of a multi-cavity mold injection molding Download PDFInfo
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- CN209240398U CN209240398U CN201822221322.5U CN201822221322U CN209240398U CN 209240398 U CN209240398 U CN 209240398U CN 201822221322 U CN201822221322 U CN 201822221322U CN 209240398 U CN209240398 U CN 209240398U
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Abstract
The utility model discloses a kind of filling balanced structures of a multi-cavity mold injection molding, including sprue, level-one runner, second level runner and three-level runner, it is connected to respectively with one end of level-one runner at left and right sides of the sprue, the level-one runner is connected to the middle part of second level runner, and the second level runner is connected to three-level runner；The three-level runner is connect with die cavity；90 degree of helical structures are set inside the secondary streams road segment segment, 90 degree of helical structures are located in one 90 degree of quadrant of second level runner cross circular section shape.The utility model increases by 90 degree of helical structures in the inside of second level runner, and for helical angle between 60 degree to 75 degree, rounded corner is arranged in the junction of runner.Such structure had not only been able to achieve the fusion of the resin solution and the highly viscous resin solution of low temperature of high temperature low viscosity, but also was able to achieve the unimpeded of runner junction, to realize the consistency of the temperature at 8 three-level runner exits.
Description
Technical field
The utility model relates to a kind of filling structure of injection molding, especially a kind of filling of a multi-cavity mold injection molding
Balanced structure.
Background technique
In injection molding process, when forming 8 chamber of a mould or when more multi-cavity, each die cavity in injection moulding,
Tend to the non-uniform phenomenon of each cavity filling occur, even 8 chambers of the so-called symmetrical structure setting of " H " type distribution
Mould, the phenomenon that also always will appear Filling imbalance.The reason of appearance is frequently not to be perfectly clear, it is common practice to filling
Insufficient die cavity increases the area of cast gate, or improves the speed of filling die cavity, or improves the mold temperature of die cavity, these
Mode usually can temporarily solve product bad phenomenon caused by imbalance, but corresponding desired size or appearance are very strict
Product, be often difficult to meet, stability is very insufficient.After a condition slight variation, balance originally be easy to by
Break, form bad and will appear.
By long-term analysis and confirmation, the filling structure of " H " type alignment placement of discovery, although on surface being balance
Structure is filled, but the temperature of each point of three-level runner is variant, close to four three-level runners of four chambers of sprue
Temperature is apparently higher than the three-level runner of four chambers far from sprue, and the result of analysis is as shown in Figure 1-3, in second level runner 4
In there is the outer peripheral high temperature low viscosity solution 6 and internal low temperature high viscosity solution 7 formed due to shearing.Using three
After the shunting of grade runner 5, outer peripheral high temperature low viscosity solution 6 and internal low temperature high viscosity solution 7 are just divided and come,
Four chambers far from sprue 1 are apparently higher than so as to form close to four 5 temperature of three-level runner of four chambers of sprue 1
5 temperature of three-level runner.
Utility model content
To solve the above problems existing in the prior art, the utility model will design a kind of multi-cavity equalized temperature of being able to achieve
The filling balanced structure of a multi-cavity mold injection molding.
To achieve the goals above, the technical solution of the utility model is as follows: a kind of filling of a multi-cavity mold injection molding
Balanced structure, including sprue, level-one runner, second level runner and three-level runner, respectively with one at left and right sides of the sprue
One end connection of grade runner, the other end of the level-one runner are connected to the middle part of second level runner, the second level runner
Both ends are connected to the middle part of three-level runner respectively；The both ends of the three-level runner are connect with die cavity respectively；Total or so
Symmetrically, front and back is symmetrical, constitutes " H " type structure；
90 degree of helical structures are set inside the secondary streams road segment segment, 90 degree of helical structures are located at second level runner
In circular one 90 degree of the quadrant in cross section.
Further, 90 degree of helical structures totally four, each two on left and right side second level runner, and about whole
The cross central line of a structure is symmetrical.
Further, second level of the 90 degree of helical structures between one group of grade runner exit and three-level flow channel entry point
The middle position of runner.
Further, the helical angle of 90 degree of helical structures is between 60-75 degree.
Further, the thread depth of 90 degree of helical structures be 0.8mm, width 1.2mm.
Further, rounded corner is arranged in the junction of the level-one runner and second level runner；Second level runner and three-level stream
Rounded corner is arranged in the junction in road.
Compared with prior art, the utility model has the following beneficial effects:
The utility model second level runner inside increase by 90 degree of helical structures, helical angle between 60 degree to 75 degree,
Only 90 degree of the region band helical structure in the circle of the cross section of entire runner, rounded corner is arranged in the junction of runner.In this way
Structure be not only able to achieve high temperature low viscosity resin solution and the highly viscous resin solution of low temperature fusion, but also be able to achieve runner company
The unimpeded of place is connect, to realize the consistency of the temperature at 8 three-level runner exits.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the resin solution laminar flow schematic diagram of original structure.
Fig. 3 is the second level runner cross-sectional view of the utility model.
Fig. 4 is 90 degree of conveyor screw position views of the utility model.
In figure: 1, sprue, 2, level-one runner, 3, die cavity, 4, second level runner, 5, three-level runner, 6, high temperature low viscosity it is molten
Body, 7, low temperature high viscosity solution, 8,90 degree of helical structures.
Specific embodiment
The utility model is further described through with reference to the accompanying drawing.As shown in Figs 1-4, a kind of a multi-cavity mold injection molding
Molding filling balanced structure, including sprue 1, level-one runner 2, second level runner 4 and three-level runner 5, the sprue 1 are left
Right two sides are connected to one end of level-one runner 2 respectively, and the other end of the level-one runner 2 is connected to the middle part of second level runner 4,
The both ends of the second level runner 4 are connected to the middle part of three-level runner 5 respectively；The both ends of the three-level runner 5 respectively with mould
Chamber 3 connects；Total bilateral symmetry, front and back are symmetrical, constitute " H " type structure；
90 degree of helical structures 8 are set inside 4 section of second level runner, and 90 degree of helical structures 8 are located at second level
In circular one 90 degree of the quadrant in 4 cross section of runner.
Further, 90 degree of helical structures 8 totally four each two on the second level runner 4 of left and right side, and close
It is symmetrical in the cross central line of total.
Further, 90 degree of helical structures 8 are located at two between the outlet of level-one runner 2 and 5 entrance of three-level runner
The middle position of grade runner 4.
Further, the helical angle of 90 degree of helical structures 8 is 60-75 degree.
Further, the screw thread radial height of 90 degree of helical structures 8 be 0.8mm, width 1.2mm.
Further, rounded corner is arranged in the junction of the level-one runner 2 and second level runner 4；Second level runner 4 and three-level
Rounded corner is arranged in the junction of runner 5.
The utility model is not limited to the present embodiment, any equivalent concepts in the technical scope that the utility model discloses
Or change, it is classified as the protection scope of the utility model.
Claims (6)
1. a kind of filling balanced structure of a multi-cavity mold injection molding, it is characterised in that: including sprue (1), level-one runner
(2), second level runner (4) and three-level runner (5), the sprue (1) left and right sides connect with one end of level-one runner (2) respectively
Logical, the other end of the level-one runner (2) is connected to the middle part of second level runner (4), the both ends point of the second level runner (4)
It is not connected to the middle part of three-level runner (5)；The both ends of the three-level runner (5) are connect with die cavity (3) respectively；Total is left
The right side is symmetrical, front and back is symmetrical, constitutes " H " type structure；
90 degree of helical structures (8) are set inside described second level runner (4) section, and 90 degree of helical structures (8) are located at two
In circular one 90 degree of the quadrant in grade runner (4) cross section.
2. a kind of filling balanced structure of a multi-cavity mold injection molding according to claim 1, it is characterised in that: described
90 degree helical structure (8) totally four, each two on the second level runner (4) of left and right side, and about in the transverse direction of total
Heart line is symmetrical.
3. a kind of filling balanced structure of a multi-cavity mold injection molding according to claim 1, it is characterised in that: described
90 degree of helical structures (8) are located at the interposition of the second level runner (4) between level-one runner (2) outlet and three-level runner (5) entrance
It sets.
4. a kind of filling balanced structure of a multi-cavity mold injection molding according to claim 1, it is characterised in that: described
The helical angle of 90 degree of helical structures (8) is 60-75 degree.
5. a kind of filling balanced structure of a multi-cavity mold injection molding according to claim 1, it is characterised in that: described
The screw thread radial height of 90 degree of helical structures (8) is 0.8mm, width 1.2mm.
6. a kind of filling balanced structure of a multi-cavity mold injection molding according to claim 1, it is characterised in that: described
Rounded corner is arranged in the junction of level-one runner (2) and second level runner (4)；Second level runner (4) and the junction of three-level runner (5) are set
Set rounded corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221322.5U CN209240398U (en) | 2018-12-28 | 2018-12-28 | A kind of filling balanced structure of a multi-cavity mold injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822221322.5U CN209240398U (en) | 2018-12-28 | 2018-12-28 | A kind of filling balanced structure of a multi-cavity mold injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209240398U true CN209240398U (en) | 2019-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822221322.5U Active CN209240398U (en) | 2018-12-28 | 2018-12-28 | A kind of filling balanced structure of a multi-cavity mold injection molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209240398U (en) |
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2018
- 2018-12-28 CN CN201822221322.5U patent/CN209240398U/en active Active
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