CN216609880U

CN216609880U - Injection molding device

Info

Publication number: CN216609880U
Application number: CN202123031938.4U
Authority: CN
Inventors: 刘秋元; 李林仕; 龙云钲; 王云飞; 唐光伟; 孙中斌
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-27
Anticipated expiration: 2031-12-03

Abstract

The utility model provides an injection molding device, comprising: the main body part is provided with an injection molding cavity; the main injection molding nozzle is arranged on the main body part, and the inflow port of the main injection molding nozzle is positioned on the outer surface of the main body part; the sub-injection nozzles are arranged on the main body part, the sub-injection nozzles and the main injection nozzle are arranged at intervals, and the outflow ports of the sub-injection nozzles are communicated with the injection molding cavity; a shunting branch is arranged between the main injection molding nozzle and the separate injection molding nozzle, so that fluid in the main injection molding nozzle flows into the separate injection molding nozzle through the shunting branch. Through the technical scheme provided by the utility model, the technical problem that the injection molding finished product of the injection molding device in the prior art is poor in quality can be solved.

Description

Injection molding device

Technical Field

The utility model relates to the technical field of injection molding devices, in particular to an injection molding device.

Background

At present, in the injection molding apparatus in the prior art, a plurality of sub-runners are generally provided between a main injection nozzle and a separate injection nozzle, and fluid in the main injection nozzle passes through the plurality of sub-runners, then joins in an injection runner of the separate injection nozzle, and flows into an injection cavity through an outflow port of the separate injection nozzle to perform injection molding.

However, when the fluids in the branch channels are merged in the injection channel in the dispensing nozzle, the merging of the multiple streams of fluids will generate a merged flow mark, so that the appearance of the product also has a flow mark line, and further the appearance quality of the finished product is poor.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an injection molding device to solve the technical problem that the quality of an injection molding finished product of the injection molding device in the prior art is poor.

In order to achieve the above object, the present invention provides an injection molding apparatus comprising: the main body part is provided with an injection molding cavity; the main injection molding nozzle is arranged on the main body part, and the inflow port of the main injection molding nozzle is positioned on the outer surface of the main body part; the sub-injection nozzles are arranged on the main body part, the sub-injection nozzles and the main injection nozzle are arranged at intervals, and the outflow ports of the sub-injection nozzles are communicated with the injection molding cavity; a shunting branch is arranged between the main injection molding nozzle and the separate injection molding nozzle, so that fluid in the main injection molding nozzle flows into the separate injection molding nozzle through the shunting branch.

Furthermore, a plurality of separate injection molding nozzles are arranged at intervals, a plurality of branch paths are arranged, and the branch paths and the separate injection molding nozzles are arranged in a one-to-one correspondence manner, so that fluid in the main injection molding nozzle flows into the corresponding separate injection molding nozzles through the branch paths.

Further, the injection molding apparatus further comprises: the connecting pipe fitting is arranged on the main body part, is positioned between the main injection nozzle and the dispensing plastic nozzle and is provided with a communication flow path, and the connecting pipe fitting is connected with the dispensing plastic nozzle so as to enable the communication flow path to be communicated with an injection flow channel of the dispensing plastic nozzle; the branch flow path is positioned between the communication flow path and the main injection molding nozzle, so that fluid in the branch flow path is communicated with the injection molding flow path through the communication flow path.

Furthermore, a first port and a second port which are arranged oppositely are arranged in the communication flow path, the first port is communicated with the injection molding flow path, the cylinder assembly is installed on the second port, and the connecting position of the branch path and the communication flow path is located between the first port and the second port.

Further, the injection molding apparatus further comprises: and the valve needle is connected with the cylinder assembly, movably arranged in the communication flow path and the injection flow channel and spaced from the inner wall of the communication flow path so that the fluid in the branch flow path flows into a gap between the valve needle and the communication flow path.

Furthermore, a main runner is further arranged between the main injection molding nozzle and the branch flow passage, the inlet end of the main runner is connected with the main injection molding nozzle, the outlet end of the main runner is communicated with the branch flow passage, and the main runner is a bending runner.

Further, the injection molding apparatus further comprises: the flow distribution plate is arranged on the main body part and is positioned between the main injection molding nozzle and the separate injection molding nozzle, and the main runner is arranged on the flow distribution plate.

Further, the flow distribution plate is positioned above the connecting pipe fitting.

Further, one side of the splitter plate, which is far away from the main injection molding nozzle, is provided with an avoiding groove, and at least part of the connecting pipe fitting is positioned in the avoiding groove.

Further, the main body portion includes: the injection molding device comprises a first mounting plate, a second mounting plate and a third mounting plate, wherein an injection molding cavity is arranged on the first mounting plate, and a separate injection molding nozzle is arranged on the first mounting plate; the second mounting plate is connected with the first mounting plate, the second mounting plate is arranged above the first mounting plate, and the connecting pipe fitting and the flow distribution plate are arranged on the second mounting plate; the third mounting panel is connected with the second mounting panel, and the third mounting panel is located the one side that the first mounting panel was kept away from to the second mounting panel, and the main mouth of moulding plastics is installed on the third mounting panel.

By applying the technical scheme of the utility model, only one shunt branch is arranged between the main injection molding nozzle and the separate injection molding nozzle, so that the fluid in the main injection molding nozzle flows into the separate injection molding nozzle after passing through the shunt branch, and because the fluid in only one shunt branch enters the separate injection molding nozzle, the single-strand fluid cannot generate a converging flow mark after entering the separate injection molding nozzle, the appearance of a product cannot generate a flow mark line, and the appearance quality of a finished product is effectively ensured. Therefore, through the injection molding device provided by the embodiment, the technical problem that the quality of an injection molding finished product of the injection molding device in the prior art is poor can be solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 shows a cross-sectional view of an injection molding apparatus provided in accordance with an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a main body portion; 11. an injection molding cavity; 12. a first mounting plate; 13. a second mounting plate; 14. a third mounting plate; 20. a main injection nozzle; 30. dividing an injection molding nozzle; 31. injection molding a runner; 41. a shunt branch; 42. a main flow channel; 50. connecting pipe fittings; 51. a communication flow path; 60. a cylinder assembly; 70. a valve needle; 80. a splitter plate.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, an embodiment of the present invention provides an injection molding apparatus including a main body 10, a main injection nozzle 20, and a sub-injection nozzle 30, the main body 10 having an injection molding cavity 11. The main injection nozzle 20 is mounted on the main body 10, and an inflow port of the main injection nozzle 20 is located at an outer surface of the main body 10. The sub-injection nozzle 30 is arranged on the main body part 10, the sub-injection nozzle 30 and the main injection nozzle 20 are arranged at intervals, and the outflow port of the sub-injection nozzle 30 is communicated with the injection cavity 11; a branch path 41 is provided between the main injection nozzle 20 and the sub-injection nozzle 30, so that the fluid in the main injection nozzle 20 flows into the sub-injection nozzle 30 through the branch path 41.

By adopting the injection molding device provided by the embodiment, only one branch flow path 41 is arranged between the main injection molding nozzle 20 and the branch injection molding nozzle 30, so that the fluid in the main injection molding nozzle 20 flows into the branch injection molding nozzle 30 after passing through the branch flow path 41, and because the fluid in only one branch flow path 41 enters the branch injection molding nozzle 30, the single-strand fluid cannot generate confluent flow marks after entering the branch injection molding nozzle 30, so that the flow marks cannot be generated in the appearance of the product, and the appearance quality of the finished product is effectively ensured. Therefore, through the injection molding device that this embodiment provided, can solve the relatively poor technical problem of the finished product of moulding plastics of the device of moulding plastics among the prior art.

Specifically, the axis of the main injection nozzle 20 in the present embodiment may coincide with the axis of the dispensing nozzle 30; alternatively, the axis of the main nozzle 20 in the present embodiment may not coincide with the axis of the dispensing nozzle 30.

In the present embodiment, the plurality of sub-injection nozzles 30 are provided at intervals, the plurality of branch lines 41 are provided, and the plurality of branch lines 41 are provided in one-to-one correspondence with the plurality of sub-injection nozzles 30, so that the fluid in the main injection nozzle 20 flows into the corresponding sub-injection nozzle 30 through each branch line 41. By adopting the structure, the plastic injection nozzle can enter the corresponding separated injection molding nozzle 30 after each separated branch, so that the condition that multiple strands of fluid are converged cannot occur in each separated injection molding nozzle 30, the condition that flow marks appear on the appearance of a product is avoided, and the appearance quality of the product is improved on the whole.

Specifically, the injection molding apparatus in this embodiment further includes a connecting pipe 50, the connecting pipe 50 is mounted on the main body 10, the connecting pipe 50 is located between the main injection nozzle 20 and the sub injection nozzle 30, the connecting pipe 50 has a communication flow path 51, and the connecting pipe 50 is connected to the sub injection nozzle 30 so that the communication flow path 51 communicates with the injection flow path 31 of the sub injection nozzle 30. The branch passage 41 is located between the communication flow path 51 and the main injection nozzle 20, so that the fluid in the branch passage 41 is communicated with the injection runner 31 through the communication flow path 51. With such a structural arrangement, the structural layout can be optimized, and the fluid in the branch passage 41 can be conveniently introduced into the injection runner 31 through the communication flow path 51.

In particular, the flow cross-sectional area of the branch 41 is S₁The flow cross-sectional area of the sub-injection nozzle 30 is S₂，S₁＞0.25S₂. The connecting section between the branch 41 and the connecting tube 50 should ensure a small step difference.

In the present embodiment, the communication flow path 51 has a first port and a second port disposed opposite to each other, the first port is communicated with the injection flow path 31, the second port is mounted with the cylinder assembly 60, and the junction of the branch path 41 and the communication flow path 51 is located between the first port and the second port. With such a structural arrangement, it is possible to facilitate optimization of the structural layout and also facilitate connection of the branch path 41 and the communication flow path 51.

Specifically, the injection molding apparatus in this embodiment further includes a needle 70, the needle 70 is connected to the cylinder assembly 60, the needle 70 is movably disposed in the communication flow path 51 and the injection flow path 31, and the needle 70 is disposed at a distance from an inner wall of the communication flow path 51, so that the fluid in the branch path 41 flows into a gap between the needle 70 and the communication flow path 51. With such a structural arrangement, the valve needle 70 moves up and down by the driving of the cylinder assembly 60 to close the outlet of the injection flow passage 31 or open the outlet of the injection flow passage 31 to control the outflow of the fluid.

In this embodiment, a main flow channel 42 is further disposed between the main injection nozzle 20 and the branch flow channel 41, an inlet end of the main flow channel 42 is connected to the main injection nozzle 20, an outlet end of the main flow channel 42 is communicated with the branch flow channel 41, and the main flow channel 42 is a bent flow channel. With such a structure, the overall layout of the flow channel can be optimized, and the connection of the plurality of branch flow paths 41 can be facilitated by providing the bent main flow channel 42.

Specifically, the injection molding apparatus in this embodiment further includes a flow distribution plate 80, the flow distribution plate 80 is mounted on the main body 10, the flow distribution plate 80 is located between the main injection nozzle 20 and the sub injection nozzle 30, and the main flow passage 42 is disposed on the flow distribution plate 80. With such a structural arrangement, the corresponding adjustment of the shunt branch 41 can be facilitated.

In this embodiment, the diversion plate 80 is located above the connecting tube 50, and the main injection nozzle 20 is located above the diversion plate 80, so that the fluid is fed from the main injection nozzle 20 into the diversion plate 80 and then into each of the sub-injection nozzles 30 in sequence under a neutral action.

Specifically, the side of the diversion plate 80 away from the main injection nozzle 20 in this embodiment is provided with an avoiding groove, and at least a part of the connecting pipe 50 is located in the avoiding groove. By adopting the structure, the installation of the connecting pipe fitting 50 can be facilitated, and the situation that the flow distribution plate 80 and the connecting pipe fitting 50 interfere with each other when being installed is avoided.

In the present embodiment, the main body 10 includes a first mounting plate 12, a second mounting plate 13, and a third mounting plate 14, the first mounting plate 12 is provided with an injection molding cavity 11, and the dispensing nozzle 30 is mounted on the first mounting plate 12. The second mounting plate 13 is connected with the first mounting plate 12, the second mounting plate 13 is installed above the first mounting plate 12, and the connecting pipe 50 and the flow distribution plate 80 are installed on the second mounting plate 13. The third mounting plate 14 is connected with the second mounting plate 13, the third mounting plate 14 is located on one side of the second mounting plate 13 far away from the first mounting plate 12, and the main injection nozzle 20 is mounted on the third mounting plate 14. The split structure is convenient to produce, manufacture and assemble.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the quality of the injection molding finished product of the injection molding device is improved.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding apparatus, comprising:

a main body portion (10), the main body portion (10) having an injection molding cavity (11);

a main injection nozzle (20) mounted on the main body portion (10), an inflow port of the main injection nozzle (20) being located at an outer surface of the main body portion (10);

the sub injection molding nozzle (30) is arranged on the main body part (10), the sub injection molding nozzle (30) and the main injection molding nozzle (20) are arranged at intervals, and the outflow port of the sub injection molding nozzle (30) is communicated with the injection molding cavity (11);

a branch flow path (41) is arranged between the main injection nozzle (20) and the sub injection nozzle (30), so that the fluid in the main injection nozzle (20) flows into the sub injection nozzle (30) through the branch flow path (41).

2. An injection molding apparatus as claimed in claim 1, wherein said sub injection molding nozzles (30) are plural, a plurality of said sub injection molding nozzles (30) are arranged at intervals, said branch flow path (41) is plural, and a plurality of said branch flow paths (41) are arranged in one-to-one correspondence with a plurality of said sub injection molding nozzles (30) so that the fluid in said main injection molding nozzle (20) flows into the corresponding sub injection molding nozzles (30) through each of said branch flow paths (41).

3. An injection molding apparatus as claimed in claim 1, further comprising:

a connection pipe (50) installed on the main body part (10), the connection pipe (50) being located between the main injection nozzle (20) and the sub injection nozzles (30), the connection pipe (50) having a communication flow path (51), the connection pipe (50) being connected with the sub injection nozzles (30) so that the communication flow path (51) communicates with the injection flow path (31) of the sub injection nozzle (30);

the branch passage (41) is positioned between the communication flow passage (51) and the main injection nozzle (20) so that the fluid in the branch passage (41) is communicated with the injection flow passage (31) through the communication flow passage (51).

4. An injection molding apparatus as claimed in claim 3, wherein said communication flow path (51) has first and second oppositely disposed ports therein, said first port communicating with said injection flow path (31), said second port having a cylinder assembly (60) mounted thereto, and a junction of said branch path (41) and said communication flow path (51) being located between said first and second ports.

5. An injection molding apparatus as claimed in claim 4, further comprising:

a needle (70) connected to the cylinder assembly (60), the needle (70) being movably disposed in the communication flow path (51) and the injection flow path (31), the needle (70) being disposed spaced apart from an inner wall of the communication flow path (51) so that the fluid in the branch path (41) flows into a gap between the needle (70) and the communication flow path (51).

6. An injection molding apparatus as claimed in claim 3, wherein a main runner (42) is further disposed between said main injection nozzle (20) and said branch runner (41), an inlet end of said main runner (42) is connected to said main injection nozzle (20), an outlet end of said main runner (42) is communicated with said branch runner (41), and said main runner (42) is a bent runner.

7. An injection molding apparatus as claimed in claim 6, further comprising:

a flow distribution plate (80) mounted on the main body portion (10), the flow distribution plate (80) being located between the main injection molding nozzle (20) and the branch injection molding nozzle (30), the main flow passage (42) being provided on the flow distribution plate (80).

8. An injection moulding device according to claim 7, characterized in that the flow dividing plate (80) is located above the connecting tube piece (50).

9. An injection moulding device according to claim 8, characterised in that the side of the diverter plate (80) remote from the main injection nozzle (20) is provided with an escape slot in which at least part of the connecting tube (50) is located.

10. An injection molding apparatus as claimed in claim 7, wherein said main body portion (10) comprises:

the injection molding device comprises a first mounting plate (12), wherein the injection molding cavity (11) is arranged on the first mounting plate (12), and the sub-injection molding nozzle (30) is mounted on the first mounting plate (12);

a second mounting plate (13) connected to the first mounting plate (12), the second mounting plate (13) being mounted above the first mounting plate (12), the connecting pipe (50) and the flow distribution plate (80) being mounted on the second mounting plate (13);

third mounting panel (14), with second mounting panel (13) are connected, third mounting panel (14) are located second mounting panel (13) are kept away from one side of first mounting panel (12), main mouth (20) of moulding plastics are installed on third mounting panel (14).