Hot runner system

Abstract

The utility model provides a hot runner system, comprising: a hot runner plate provided with a first cavity and a second cavity separated from each other and a main abdicating hole communicated with the first cavity, the hot runner plate being formed with a front surface and a side surface adjacent to the front surface, the main abdicating hole penetrating through the front surface; the first hot runner assembly comprises a main nozzle penetrating through the main receding hole, a first splitter plate arranged in the first cavity and a first hot nozzle connected with the first splitter plate; the second hot runner assembly comprises a side nozzle fixed relative to the side face of the hot runner plate, a second splitter plate arranged in the second cavity and a second hot nozzle connected with the second splitter plate. The hot runner system provided by the utility model is provided with the two groups of separated hot runner assemblies, and the incident nozzles of the two groups of hot runner assemblies are respectively positioned on the front surface and the side surface of the hot runner plate, so that on one hand, a gun barrel can be abdicated, two-sided glue feeding is realized, and double-color injection molding parts can be produced; on the other hand, the two hot runner assemblies can be subjected to respective injection molding without being affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the hot runner technical field, and particularly relates to a hot runner system. BACKGROUND

[0002] In the hot runner system, at least two barrels are usually needed for injection of injection parts of more than one color, and one of the two barrels is usually arranged on the front surface of a hot runner plate and the other barrel is arranged on the side surface of the hot runner plate to feed a same distribution plate. This structure has a single use scene and low utilization rate. SUMMARY

[0003] The present application aims to provide a hot runner system, two groups of separated hot runner assemblies are arranged on a hot runner plate, and the problem of a single use scene and low utilization rate caused by feeding of two barrels to a same distribution plate in the prior art is solved.

[0004] In order to achieve one of the above-mentioned purposes, one embodiment of the present application provides a hot runner system, comprising:

[0005] A hot runner plate is provided with a first cavity and a second cavity separated from each other and a main position giving hole in communication with the first cavity, the hot runner plate is formed with a front surface and a side surface adjacent to the front surface, and the main position giving hole penetrates the front surface;

[0006] A first hot runner assembly comprises a main nozzle penetrating the main position giving hole, a first distribution plate arranged in the first cavity, and a first hot nozzle connected with the first distribution plate;

[0007] A second hot runner assembly comprises a side nozzle fixed relative to the side surface of the hot runner plate, a second distribution plate arranged in the second cavity, and a second hot nozzle connected with the second distribution plate.

[0008] In one embodiment of the present application, the second hot runner assembly further comprises a third distribution plate fixed to the side surface of the hot runner plate and a connecting hot nozzle connected with the third distribution plate, the side nozzle is in communication with the third distribution plate, and one end of the connecting hot nozzle away from the third distribution plate is in communication with the second distribution plate.

[0009] In one embodiment of the present application, the connecting hot nozzle and the second distribution plate are connected through a first adapter and a second adapter, the second distribution plate is provided with a second flow channel and a second position giving hole in communication with the second flow channel, the first adapter is provided with a first transition flow channel in a right angle, the second adapter is provided with a second transition flow channel in a right angle, the first adapter is arranged in the second position giving hole, and one end of the first transition flow channel is in communication with the second flow channel and the other end is in communication with the second transition flow channel.

[0010] In one of the embodiments of the present application, the second transition flow channel is provided with a clearance cavity near the end connected with the hot nozzle, and a docking piece is arranged in the clearance cavity, which communicates the second transition flow channel with the hot nozzle, and the end of the hot nozzle extends into the docking piece.

[0011] In one of the embodiments of the present application, the inner diameter of the clearance cavity is greater than the inner diameter of the second transition flow channel, and the end of the docking piece abuts against the end face of the clearance cavity near the end of the second transition flow channel.

[0012] In one of the embodiments of the present application, the first transition flow channel is provided with a first accommodating cavity near the end of the second transition flow channel, the second transition flow channel is provided with a second accommodating cavity near the end of the first transition flow channel, a first anti-overflow ring is further arranged between the first docking piece and the second docking piece, the two ends of the first anti-overflow ring are arranged in the first accommodating cavity and the second accommodating cavity respectively, and the inner diameter of the first transition flow channel is equal to the inner diameter of the first anti-overflow ring and the inner diameter of the second transition flow channel.

[0013] In one of the embodiments of the present application, the third flow channel is provided with a third accommodating cavity at the end communicated with the side nozzle, and a fourth accommodating cavity is arranged at the end of the third flow channel near the side nozzle, and a second anti-overflow ring is further arranged between the third flow channel and the side nozzle, and the two ends of the second anti-overflow ring are arranged in the third accommodating cavity and the fourth accommodating cavity respectively.

[0014] In one of the embodiments of the present application, the third flow channel is provided with a third clearance hole communicated with the third flow channel, and the hot nozzle passes through the third clearance hole to communicate with the third flow channel.

[0015] In one of the embodiments of the present application, the third flow channel is provided with a third clearance hole communicated with the third flow channel, and the hot nozzle passes through the third clearance hole to communicate with the third flow channel.

[0016] In one of the embodiments of the present application, the hot flow channel plate is provided with a guide column, and the length of the guide column is greater than that of the first hot nozzle and the second hot nozzle.

[0017] The one or more technical solutions provided by the present application have at least the following technical effects or advantages:

[0018] In the hot flow channel system provided by the present application, two independent hot flow channel assemblies are arranged on the hot flow channel plate, and the two hot flow channel assemblies can be simultaneously used for injection molding when double-color injection molding is performed. In addition, the two hot flow channel assemblies can also be independently used for injection molding, so that the hot flow channel system provided by the present application has a wide range of application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structural schematic diagram of a hot flow channel system in an embodiment of the present application.

[0020] Figure 2 is a side view of the hot runner system. Figure 1

[0021] Figure 3 is a cross-sectional view along line A-A. Figure 2

[0022] Figure 4 is a cross-sectional view along line C-C. Figure 3

[0023] Figure 5 is a cross-sectional view along line C-C. Figure 2

[0024] Figure 6 is a cross-sectional view along line C-C. Figure 5

[0025] Figure 7 is a cross-sectional view along line C-C. Figure 5 1, hot runner plate; 11, first cavity; 12, second cavity; 13, main relief hole; 14, guide post; 15, positioning block;

[0026] 21, main nozzle; 22, first distribution plate; 23, first hot nozzle;

[0027] 31, side nozzle; 311, third receiving cavity; 32, second distribution plate; 321, second relief hole; 33, second hot nozzle; 34, third distribution plate; 341, third runner; 342, fourth receiving cavity; 343, third relief hole; 344, positioning member; 35, connecting hot nozzle; 361, first adapter; 3611, first transition runner; 3612, first receiving cavity; 362, second adapter; 3621, second transition runner; 3622, relief cavity; 3623, second receiving cavity; 37, docking member; 381, first anti-overflow ring; 382, second anti-overflow ring.

[0028] DETAILED DESCRIPTION The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0029]

[0030] ​​​​​​The terms used in this document, such as “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” indicating spatial relative positions, are used for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative positions” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0031] For example, if the device in the figure is flipped, a unit described as being "below" or "under" other units or features will be "above" other units or features. Therefore, the exemplary term "below" can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or otherwise) and the spatially related descriptive terms used herein will be interpreted accordingly.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Furthermore, it should be understood that although the terms "first," "second," etc., may be used herein to describe various elements or structures, the objects being described should not be limited by these terms. These terms are only used to distinguish these objects from one another. For example, a first hot runner assembly may be referred to as a second hot runner assembly, and similarly, a second hot runner assembly may be referred to as a first hot runner assembly, without departing from the scope of protection of this application.

[0034] This application provides a hot runner system, such as Figures 1 to 7 As shown, the system includes a hot runner plate 1 and a first hot runner assembly and a second hot runner assembly disposed on the hot runner plate 1. The hot runner plate 1 is provided with a first cavity 11 and a second cavity 12 that are separated from each other, and a main relief hole 13 that communicates with the first cavity 11. The hot runner plate 1 is formed with a front side and a side side adjacent to the front side, and the main relief hole 13 penetrates through the front side. The first hot runner assembly includes a main nozzle 21 that passes through the main relief hole 13, a first flow divider plate 22 disposed in the first cavity 11, and a first hot nozzle 23 connected to the first flow divider plate 22. The second hot runner assembly includes a side nozzle 31 that is fixed relative to the side side of the hot runner plate 1, a second flow divider plate 32 disposed in the second cavity 12, and a second hot nozzle 33 connected to the second flow divider plate 32.

[0035] The hot runner plate 1 is plate-shaped, has two large-area planes and generally vertical side surfaces of the planes, the plane provided with the main nozzle 21 is the front surface, and the surface opposite to the front surface is the back surface. Two groups of hot runner assemblies are arranged in the application and are connected with the hot runner plate 1, the two groups of hot runner assemblies can be connected with barrels filled with different color glue and are applied to double-color injection molding products. The main nozzle 21 of the first hot runner assembly is arranged on the front surface of the hot runner plate 1, the side nozzle 31 of the second hot runner assembly is arranged on the side surface of the hot runner plate 1, the barrel connected with the main nozzle 21 and the barrel connected with the side nozzle 31 are staggered in space, and the situation that the space positions of the two barrels are insufficient does not exist. In the application, the first hot runner assembly and the second hot runner assembly are arranged to be separated from each other, the first hot runner assembly and the second hot runner assembly can be adapted to the same mold to produce the same injection molding part, or can work independently to injection mold different injection molding parts.

[0036] The first shunt plate 22 is provided with a first flow channel and a first accommodation hole in communication with the first flow channel, the first hot nozzle 23 passes through the first accommodation hole and is in communication with the first flow channel, the cooperation between the two is not shown in the figure, and the cooperation can be referred to Figure 7 the connection mode of the third shunt plate 34 and the connecting hot nozzle 35.

[0037] As Figure 3 In the application, the main nozzle 21 is located on the front surface of the hot runner plate 1, the first hot nozzle 23 and the second hot nozzle 33 are located on the back surface of the hot runner plate 1 and are used to accommodate the barrel connected with the main nozzle 21. The first cavity 11 and the second cavity 12 have openings and the openings are all directed to the back surface, so as to facilitate the installation of the first shunt plate 22 and the second shunt plate 32 connected with the first hot nozzle 23 and the second hot nozzle 33. The first cavity 11 and the second cavity 12 are provided with molds on the side of the openings, and the first hot nozzle 23 and the second hot nozzle 33 extend into the molds to perform injection molding.

[0038] In an embodiment of the application, the hot runner plate 1 is provided with guide columns 14, the lengths of the guide columns 14 are greater than those of the first hot nozzle 23 and the second hot nozzle 33. After the first hot runner assembly and the second hot runner assembly are installed on the hot runner plate 1, the whole is extended into the mold, the lengths of the guide columns 14 are greater than those of the first hot nozzle 23 and the second hot nozzle 33, the guide columns 14 contact the mold first, and damage of the first hot nozzle 23 and the second hot nozzle 33 caused by the tip of the nozzle touching the mold can be avoided. Preferably, the guide columns 14 are four. Figures 1 to 7 The hot nozzle is provided with a spiral pattern, and the guide column 14 is not provided with a spiral pattern.

[0039] In an embodiment of the present application, the second hot runner assembly further comprises a third distribution plate 34 fixed to the side of the hot runner plate 1 and a connecting hot nozzle 35 connected to the third distribution plate 34, the side-throwing nozzle 31 communicates with the third distribution plate 34, and the connecting hot nozzle 35 communicates with the second distribution plate 32 at the end away from the third distribution plate 34. The side-throwing nozzle 31 is fixed to the third distribution plate 34, the third distribution plate 34 is fixed to the hot runner plate 1, the second distribution plate 32 is arranged in the second cavity 12, and the second distribution plate 32 and the third distribution plate 34 are connected through the connecting hot nozzle 35. The glue in the second hot runner assembly passes through the side-throwing nozzle 31, the third distribution plate 34, the connecting hot nozzle 35, the second distribution plate 32, and the second hot nozzle 33 in sequence and enters the mold.

[0040] In an embodiment of the present application, as shown in Figure 4 , the connecting hot nozzle 35 and the second distribution plate 32 are connected through a first adapter 361 and a second adapter 362, the second distribution plate 32 is provided with a second flow channel and a second clearance hole 321 communicating with the second flow channel, the first adapter 361 is provided with a first transition flow channel 3611 arranged at a right angle, the second adapter 362 is provided with a second transition flow channel 3621 arranged at a right angle, the first adapter 361 is arranged in the second clearance hole 321, and one end of the first transition flow channel 3611 communicates with the second flow channel and the other end communicates with the second transition flow channel 3621. The first adapter 361 is arranged in the second clearance hole 321, the second adapter 362 is connected with the first adapter 361, and protrudes from the side of the hot runner plate 1 opposite to the front face, as shown in Figure 4 , the third distribution plate 34 also protrudes from the side of the hot runner plate 1 opposite to the front face, the connecting hot nozzle 35 is spaced apart from the hot runner plate 1 and parallel to the hot runner plate 1, and connected with the second adapter 362.

[0041] Of course, the angles of the first transition flow channel 3611 and the second transition flow channel 3621 can also be acute or obtuse, and the angles of the two can not be limited to 90°, and the connection mode is not limited to Figure 4 as shown.

[0042] Further, the second transition flow channel 3621 is provided with a clearance cavity 3622 at the end close to the connecting hot nozzle 35, a butt joint 37 is arranged in the clearance cavity 3622, the butt joint 37 communicates the second transition flow channel 3621 and the connecting hot nozzle 35, and the end of the connecting hot nozzle 35 extends into the butt joint 37. By extending the connecting hot nozzle 35 into the butt joint 37, on the one hand, positioning can be performed, and on the other hand, radial limiting can be performed.

[0043] Further, the inner diameter of the accommodation cavity 3622 is greater than the inner diameter of the second transition flow channel 3621, and the end of the abutting piece 37 abuts against the end face of the accommodation cavity 3622 close to the end of the second transition flow channel 3621. The abutting piece 37 is provided with external threads, and the inner periphery of the accommodation cavity 3622 is provided with internal threads. The abutting piece 37 is screwed into the accommodation cavity 3622, and the abutting piece 37 is tightly abutted against the end face of the accommodation cavity 3622 close to the end of the second transition flow channel 3621, so that the overflow of the gel from the gap between the abutting piece 37 and the second adapter 362 can be avoided.

[0044] In an embodiment of the present application, the first transition flow channel 3611 is provided with a first accommodation cavity 3612 close to the end of the second transition flow channel 3621, the second transition flow channel 3621 is provided with a second accommodation cavity 3623 close to the end of the first transition flow channel 3611, and a first overflow prevention ring 381 is further arranged between the first adapter 361 and the second adapter 362. The first overflow prevention ring 381 is arranged in the first accommodation cavity 3612 and the second accommodation cavity 3623 respectively, and the inner diameter of the first transition flow channel 3611 is equal to the inner diameter of the first overflow prevention ring 381 and the inner diameter of the second transition flow channel 3621.

[0045] As Figure 4 In the embodiment, the first adapter 361 and the second adapter 362 are in surface contact, and the first adapter 361 and the second adapter 362 are connected by fasteners such as screws. During installation, the first adapter 361 and the second adapter 362 can only be positioned by the fasteners, which can easily cause the first transition flow channel 3611 and the second transition flow channel 3621 to be staggered due to inaccurate positioning. The first overflow prevention ring 381 is arranged between the first adapter 361 and the second adapter 362. One end of the first overflow prevention ring 381 is inserted into the first accommodation cavity 3612, and the other end of the first overflow prevention ring 381 is inserted into the second accommodation cavity 3623. On the one hand, the first overflow prevention ring 381 can prevent the gel from flowing out of the gap between the first adapter 361 and the second adapter 362 in surface contact. On the other hand, the first overflow prevention ring 381 can be used for positioning during installation. That is, when the first adapter 361 and the second adapter 362 are connected, the first overflow prevention ring 381 is first inserted into one of the adapters, and the other adapter can be positioned according to the first overflow prevention ring 381 and inserted into the first overflow prevention ring 381.

[0046] In an embodiment of the present application, the third shunt plate 34 is provided with a third flow channel 341, the side jet nozzle 31 is provided with a third accommodation cavity 311 in communication with one end of the third flow channel 341, the third flow channel 341 is provided with a fourth accommodation cavity 342 close to one end of the side jet nozzle 31, and a second overflow prevention ring 382 is further arranged between the third shunt plate 34 and the side jet nozzle 31. The second overflow prevention ring 382 is arranged in the third accommodation cavity 311 and the fourth accommodation cavity 342 respectively.

[0047] The side nozzle 31 is formed with a through hole for the glue to flow into the third distribution plate 34. Similarly, the third distribution plate 34 and the side nozzle 31 are in surface contact, and are connected by screws and other fasteners. The through hole and the third flow channel 341 are prone to mispositioning, so a second overflow prevention ring 382 is arranged between the side nozzle 31 and the third distribution plate 34 to achieve the same overflow prevention and positioning effect as the first overflow prevention ring 381. Figure 6 In the embodiment, the third distribution plate 34 and the side nozzle 31 are in surface contact, and are connected by screws and other fasteners. The through hole and the third flow channel 341 are prone to mispositioning, so a second overflow prevention ring 382 is arranged between the side nozzle 31 and the third distribution plate 34 to achieve the same overflow prevention and positioning effect as the first overflow prevention ring 381.

[0048] Further, as shown in FIG. 1, the third distribution plate 34 is arranged on the hot runner plate 1, and is connected to the side nozzle 31. Figure 7 In the embodiment, the third distribution plate 34 is further provided with a third clearance hole 343 that is in communication with the third flow channel 341, and the connecting hot nozzle 35 passes through the third clearance hole 343 to be in communication with the third flow channel 341. The connecting hot nozzle 35 is connected to the third distribution plate 34 in a manner similar to the connection of the first hot nozzle 23 to the first distribution plate 22, and is similar to the connection of the first adapter 361 to the second distribution plate 32.

[0049] In the embodiment, the third distribution plate 34 is provided with a positioning member 344 on the side facing away from the side nozzle 31, and the positioning member 344 is coaxially arranged with the side nozzle 31. Figure 5 In the embodiment, the hot runner plate 1 is further provided with a positioning notch on the side facing the third distribution plate 34, and a positioning block 15 is fixed in the positioning notch. The positioning block 15 is provided with a positioning groove, and the positioning member 344 is arranged in the positioning groove to position the third distribution plate 34.

[0050] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. The specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0051] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application. Any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A hot runner system characterized by, The utility model relates to a hot runner plate, first cavity and second cavity are separated from each other, and the main displacement hole is communicated with the first cavity, the hot runner plate is formed with the front and the side adjacent to the front, and the main displacement hole penetrates the front, the first hot runner assembly includes the main nozzle through the main displacement hole, the first shunt plate arranged in the first cavity and the first hot nozzle connected with the first shunt plate, the second hot runner assembly includes the side nozzle fixed to the side of the hot runner plate, the second shunt plate arranged in the second cavity and the second hot nozzle connected with the second shunt plate. The second hot runner assembly further includes the third shunt plate fixed to the side of the hot runner plate and the connecting hot nozzle connected with the third shunt plate, the side nozzle is communicated with the third shunt plate, and one end of the connecting hot nozzle away from the third shunt plate is communicated with the second shunt plate. The connecting hot nozzle and the second shunt plate are connected through the first adapter and the second adapter, the second shunt plate is provided with the second flow channel and the second displacement hole communicated with the second flow channel, the first adapter is provided with the first transition flow channel in right angle, the second adapter is provided with the second transition flow channel in right angle, the first adapter is arranged in the second displacement hole, and one end of the first transition flow channel is communicated with the second flow channel, and the other end is communicated with the second transition flow channel. One end of the second transition flow channel close to the connecting hot nozzle is provided with the displacement cavity, the displacement cavity is provided with the adapter, the adapter is communicated with the second transition flow channel and the connecting hot nozzle, and one end of the connecting hot nozzle extends into the adapter.

2. The hot- runner system of claim 1, wherein The inner diameter of the displacement cavity is greater than the inner diameter of the second transition flow channel, and one end of the adapter abuts the end face of the displacement cavity close to the second transition flow channel.

3. The hot- runner system of claim 2, wherein The first transition flow channel is provided with the first containing cavity close to the second transition flow channel, the second transition flow channel is provided with the second containing cavity close to the first transition flow channel, the first anti-overflow ring is further arranged between the first adapter and the second adapter, the first anti-overflow ring is arranged in the first containing cavity and the second containing cavity respectively at both ends, and the inner diameter of the first transition flow channel is equal to the inner diameter of the first anti-overflow ring and the inner diameter of the second transition flow channel.

4. The hot- runner system of claim 3, wherein The third shunt plate is provided with the third flow channel, one end of the third flow channel communicated with the third flow channel is provided with the third containing cavity close to the side nozzle, and the second anti-overflow ring is further arranged between the third shunt plate and the side nozzle, and the second anti-overflow ring is arranged in the third containing cavity and the fourth containing cavity respectively at both ends.

5. The hot- runner system of claim 4, wherein The third shunt plate is further provided with the third displacement hole communicated with the third flow channel, and the connecting hot nozzle is communicated with the third flow channel through the third displacement hole.

6. The hot- runner system of claim 3, wherein The third shunt plate is provided with the positioning piece away from the side nozzle, and the positioning piece is coaxially arranged with the side nozzle.

7. The hot-duct system of claim 2, wherein The hot runner plate is provided with the guide column, and the length of the guide column is greater than the first hot nozzle and the second hot nozzle.

8. The hot-duct system of claim 7, wherein, ​ 9. The hot-duct system of claim 2, wherein, ​ 10. The hot runner system of any of claims 1 to 9, wherein, ​

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