Monomer two-color compound nozzle

Abstract

This utility model relates to the field of injection molding machines, and more particularly to a single-color two-color composite nozzle, including an injection seat. The injection seat is connected to a nozzle mounting seat via a connecting flange. The nozzle head of this utility model has independent fourth and fifth flow channels inside, which, together with the first guide groove, second guide groove, and third guide groove, can realize the injection of two-color materials individually or in combination, meeting diverse injection needs. By setting the limiting balls at the first and second ball limiting holes, the flow channels can be effectively controlled during injection, preventing material cross-contamination between different colors or materials. The interconnected design of the first, second, and third guide grooves makes the material flow more smoothly inside the nozzle, improving the mixing uniformity and thus improving product quality. The nozzle sleeve is engaged with the threaded part through a screw hole, ensuring a firm installation and effectively preventing material leakage during injection.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a single-component dual-color composite nozzle. Background Technology

[0002] In existing two-color injection molding processes, two independent injection systems are typically used to inject raw materials of different colors or materials, achieving two-color injection through a complex flow channel structure. However, traditional two-color nozzles are complex in structure, difficult to assemble, and suffer from problems such as flow channel intersections, uneven mixing, and easy clogging. Especially in terms of the flow channel design and limiting structure of the nozzle head, existing technologies often cannot achieve flexible and stable two-color switching, resulting in unstable injection product quality and low production efficiency. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a single-component dual-color composite nozzle.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A single-unit dual-color composite nozzle includes an injection seat, wherein the injection seat is connected to and installed with a nozzle mounting seat via a connecting flange. A nozzle mounting hole is provided at one end of the nozzle mounting seat away from the connecting flange. A limit component and a nozzle head are sequentially placed in the nozzle mounting hole, and a nozzle sleeve is screwed onto the outer wall of one end of the nozzle mounting hole. The nozzle head has a fourth flow channel and a fifth flow channel inside. The bottom surface of the nozzle head has a first liquid inlet hole and a second liquid inlet hole that communicate with the fourth flow channel and the fifth flow channel, respectively. The outer wall of the nozzle head has a first guide groove, a second guide groove and a third guide groove that are evenly distributed. The second guide groove communicates with the first guide groove. The outer wall of the nozzle head has a liquid outlet hole that communicates with the fifth flow channel and communicates with the third guide groove.

[0005] Furthermore, in a preferred configuration, the injection seat has symmetrically formed first flow channels inside, and injection holes communicating with the first flow channels are symmetrically formed on both sides of the injection seat surface, with multiple first mounting holes formed on the outer periphery of each injection hole.

[0006] Furthermore, in a preferred configuration, the connecting flange is symmetrically provided with a second flow channel communicating with the first flow channel, and both sides of the connecting flange are symmetrically provided with first flow channel holes communicating with the second flow channel, and multiple second mounting holes are provided on the outer periphery of the first flow channel holes.

[0007] Furthermore, in a preferred configuration, a third flow channel is symmetrically provided on the nozzle mounting base, a second flow channel hole communicating with the third flow channel is symmetrically provided on the bottom surface of the nozzle mounting base, and a plurality of third mounting holes are provided on the outer periphery of the second flow channel hole.

[0008] Furthermore, in a preferred configuration, the nozzle mounting hole is symmetrically provided with first ball limiting holes that communicate with the third flow channel, and limiting balls are provided at each of the first ball limiting holes. The nozzle mounting seat is provided with a threaded portion for mounting the nozzle sleeve at the outer wall of the nozzle mounting hole.

[0009] Furthermore, in a preferred configuration, the nozzle sleeve has an internal cavity, a threaded hole that engages with the threaded portion on its inner wall, and a through-hole for spraying on its surface.

[0010] Furthermore, in a preferred configuration, the limiting member is provided with symmetrically arranged second ball limiting holes, and the limiting balls are positioned and move at the first ball limiting hole and the second ball limiting hole.

[0011] The beneficial effects of this utility model are as follows: The nozzle head of this utility model is provided with an independent fourth and fifth flow channel inside, which, together with the first guide groove, the second guide groove and the third guide groove, can realize the individual or mixed injection of two-color materials to meet diverse injection needs. By setting the limiting balls at the first ball limiting hole and the second ball limiting hole, the flow channel can be effectively controlled during the injection process to prevent material cross-contamination between raw materials of different colors or materials. The interconnected design of the first guide groove, the second guide groove and the third guide groove makes the raw material flow more smoothly inside the nozzle, improves the mixing uniformity, and thus improves the product quality. The nozzle sleeve is engaged with the threaded part through the screw hole, which is firmly installed and effectively prevents material leakage during the injection process. Attached Figure Description

[0012] Figure 1 Cross-sectional view of the nozzle after assembly Figure 2 This is a schematic diagram of the assembled nozzle structure; Figure 3 This is a schematic diagram of the injection port structure; Figure 4 This is a schematic diagram of the structure from the top view of the injection port; Figure 5 This is a structural schematic diagram from the bottom of the injection port; Figure 6 This is a sectional view of the connecting flange; Figure 7 This is a structural diagram of the connecting flange; Figure 8 A sectional view of the nozzle mounting base; Figure 9 A structural schematic diagram showing the bottom view of the nozzle mounting base; Figure 10 A structural schematic diagram showing the bottom view of the nozzle mounting base; Figure 11 This is a schematic diagram of the nozzle sheath structure; Figure 12This is a structural schematic diagram of the limiting component; Figure 13 This is a sectional view of the limiting component; Figure 14 This is a cross-sectional view of the nozzle head; Figure 15 This is a schematic diagram of the external structure of the nozzle head; Figure 16 This is a schematic diagram of the structure at the bottom of the nozzle head; Figure 17 This is a magnified schematic diagram of the nozzle assembly.

[0013] In the diagram: 1 Injection seat, 11 First flow channel, 12 Injection hole, 13 First mounting hole, 2 Connecting flange, 21 Second flow channel, 22 First flow channel hole, 23 Second mounting hole, 3 Nozzle mounting seat, 31 Third flow channel, 32 First ball limiting hole, 33 Nozzle mounting hole, 34 Second flow channel hole, 35 Third mounting hole, 36 Threaded part, 4 Nozzle sleeve, 41 Threaded hole, 42 Spray hole, 5 Limiting element, 51 Second ball limiting hole, 6 Nozzle head, 61 Fourth flow channel, 62 Fifth flow channel, 63 First guide groove, 64 Second guide groove, 65 Liquid outlet hole, 66 Third guide groove, 67 First liquid inlet hole, 68 Second liquid inlet hole, 7 Limiting ball. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-17 A single-unit dual-color composite nozzle includes an injection seat 1. The injection seat 1 is connected to and installed with a nozzle mounting seat 3 via a connecting flange 2. A nozzle mounting hole 33 is opened at the end of the nozzle mounting seat 3 away from the connecting flange 2. A limit member 5 and a nozzle head 6 are placed sequentially in the nozzle mounting hole 33. A nozzle sleeve 4 is screwed on the outer wall of one end of the nozzle mounting hole 33, covering the nozzle head 6.

[0016] The nozzle head 6 has a fourth flow channel 61 and a fifth flow channel 62 inside. The bottom surface of the nozzle head 6 has a first liquid inlet hole 67 and a second liquid inlet hole 68 that communicate with the fourth flow channel 61 and the fifth flow channel 62, respectively. The outer wall of the nozzle head 6 has a first guide groove 63, a second guide groove 64 and a third guide groove 66 evenly distributed. The second guide groove 64 communicates with the first guide groove 63. The outer wall of the nozzle head 6 has a liquid outlet hole 65 that communicates with the fifth flow channel 62. The liquid outlet hole 65 communicates with the third guide groove 66 and is used to discharge the injection liquid.

[0017] The injection seat 1 has a first flow channel 11 symmetrically opened inside, and injection holes 12 communicating with the first flow channel 11 are symmetrically opened on both sides of the injection seat 1. Multiple first mounting holes 13 are opened on the outer periphery of the injection holes 12. The injection holes 12 facilitate the injection of liquid.

[0018] In addition, the connecting flange 2 is symmetrically provided with a second flow channel 21 that communicates with the first flow channel 11. The two sides of the connecting flange 2 are symmetrically provided with a first flow channel hole 22 that communicates with the second flow channel 21. A plurality of second mounting holes 23 are provided on the outer periphery of the first flow channel hole 22. The second mounting holes 23 facilitate the connection of other components.

[0019] Furthermore, the nozzle mounting base 3 is symmetrically provided with a third flow channel 31, and the bottom surface of the nozzle mounting base 3 is symmetrically provided with a second flow channel hole 34 communicating with the third flow channel 31. A plurality of third mounting holes 35 are provided on the outer periphery of the second flow channel hole 34, and the third mounting holes 35 facilitate the connection of other components.

[0020] Meanwhile, the nozzle mounting hole 33 is symmetrically provided with first ball limiting holes 32 that communicate with the third flow channel 31. Each first ball limiting hole 32 is provided with a limiting ball 7. The nozzle mounting seat 3 is provided with a threaded part 36 for installing the nozzle sleeve 4 on the outer wall of the nozzle mounting hole 33. The nozzle sleeve 4 has a cavity inside. The inner wall of the nozzle sleeve 4 has a screw hole 41 that engages with the threaded part 36. The nozzle sleeve 4 has a through injection hole 42.

[0021] In addition, the limiting member 5 is symmetrically provided with a second ball limiting hole 51, and the limiting ball 7 is disposed at the first ball limiting hole 32 and the second ball limiting hole 51.

[0022] In this embodiment, when assembling the composite nozzle onto the injection molding machine, the composite nozzle is first assembled. The injection seat 1, connecting flange 2, and nozzle mounting seat 3 are assembled together through the first mounting hole 13, the second mounting hole 23, and the third mounting hole 35. The limiting ball 7 is placed at the first ball limiting hole 32, and the limiting member 5 is randomly fastened into the nozzle mounting hole 33. Then, the nozzle head 6 is installed into the nozzle mounting hole 33, and then the nozzle sleeve 4 is screwed onto the threaded part 36.

[0023] The injection seat 1 is installed on the injection molding machine. The injection liquid is injected into different first flow channels 11 through the injection hole 12, and flows into the second flow channel hole 34 through the second flow channel 21. The limiting ball 7 can select different third flow channels 31 to spray out individually, or two third flow channels 31 to spray out together. When the fourth flow channel 61 and the fifth flow channel 62 are selected to spray out individually, the injection liquid flows out from a single third flow channel 31. The limiting ball 7 will abut against the second ball limiting hole 51 where the injection liquid flows out. The injection liquid flows out individually from the third guide groove 66 or the first guide groove 63 and the second guide groove 64, and is sprayed out through the spray hole 42. On the other side, the third flow channel 31 where the injection liquid does not flow, the limiting ball 7 will abut against the first ball limiting hole 32, thereby preventing the injection liquid from entering the third flow channel 31 where the injection liquid does not flow.

[0024] When the injection liquid flows through both sides of the third flow channel 31, the injection hole 42 sprays out the mixed liquid, and the limiting ball 7 is at the second ball limiting hole 51. The liquid flows through the fourth flow channel 61 and the fifth flow channel 62.

[0025] In this invention, the nozzle head 6 has independent fourth flow channel 61 and fifth flow channel 62 inside, which, together with the first guide groove 63, second guide groove 64 and third guide groove 66, can realize the injection of two-color materials individually or in combination, meeting diverse injection needs. By setting the limiting balls 7 at the first ball limiting hole 32 and the second ball limiting hole 51, the flow channel can be effectively controlled during the injection process to prevent material cross-contamination between different colors or materials. The interconnected design of the first guide groove 63, second guide groove 64 and third guide groove 66 makes the material flow more smoothly inside the nozzle, improves the mixing uniformity, and thus improves product quality. The nozzle sleeve 4 is engaged with the threaded part 36 through the screw hole 41, which is firmly installed and effectively prevents material leakage during the injection process.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Monobloc two-color composite nozzle comprising an injection seat (1), characterized in that, The injection seat (1) is connected to and installed with a nozzle mounting seat (3) via a connecting flange (2). A nozzle mounting hole (33) is provided at one end of the nozzle mounting seat (3) away from the connecting flange (2). A limiter (5) and a nozzle head (6) are placed in sequence in the nozzle mounting hole (33), and a nozzle sleeve (4) is screwed on at one end of the outer wall of the nozzle mounting hole (33). The nozzle head (6) has a fourth flow channel (61) and a fifth flow channel (62) inside. The bottom surface of the nozzle head (6) has a first liquid inlet hole (67) and a second liquid inlet hole (68) that communicate with the fourth flow channel (61) and the fifth flow channel (62), respectively. The outer wall of the nozzle head (6) has a first guide groove (63), a second guide groove (64) and a third guide groove (66) evenly distributed. The second guide groove (64) communicates with the first guide groove (63). The outer wall of the nozzle head (6) has a liquid outlet hole (65) that communicates with the fifth flow channel (62) and communicates with the third guide groove (66).

2. The monoblock dual color compound nozzle of claim 1, wherein, The injection seat (1) has a first flow channel (11) symmetrically opened inside. Injection holes (12) communicating with the first flow channel (11) are symmetrically opened on both sides of the injection seat (1). Multiple first mounting holes (13) are opened on the outer periphery of the injection holes (12).

3. The unitary dual color composite nozzle of claim 1 wherein, The connecting flange (2) is symmetrically provided with a second flow channel (21) communicating with the first flow channel (11). The connecting flange (2) is symmetrically provided with a first flow channel hole (22) communicating with the second flow channel (21) on both sides of the surface. Multiple second mounting holes (23) are provided on the outer periphery of the first flow channel hole (22).

4. The unitary dual color composite nozzle of claim 1 wherein, The nozzle mounting base (3) is symmetrically provided with a third flow channel (31), and a second flow channel hole (34) communicating with the third flow channel (31) is symmetrically provided on the bottom surface of the nozzle mounting base (3), and a plurality of third mounting holes (35) are provided on the outer periphery of the second flow channel hole (34).

5. The unitary dual color composite nozzle of claim 1 wherein, The nozzle mounting hole (33) is symmetrically provided with a first ball limiting hole (32) that communicates with the third flow channel (31). A limiting ball (7) is provided at each of the first ball limiting holes (32). The nozzle mounting seat (3) is provided with a threaded part (36) for installing the nozzle sleeve (4) at the outer wall of the nozzle mounting hole (33).

6. The monoblock dual color compound nozzle of claim 5, wherein, The nozzle sleeve (4) has a cavity inside, and a screw hole (41) that engages with the threaded part (36) is provided on the inner wall of the nozzle sleeve (4). A spray hole (42) is provided through the nozzle sleeve (4).

7. The unitary dual color composite nozzle of claim 1 wherein, The limiting member (5) is symmetrically provided with a second ball limiting hole (51), and the limiting ball (7) is positioned at the first ball limiting hole (32) and the second ball limiting hole (51).

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