Hot runner system with double-sided balanced glue feeding function

Abstract

The utility model discloses a double-sided balanced glue feeding hot runner system which comprises a hot runner upper mold, a hot runner lower mold, a first hot nozzle, a second hot nozzle, six third hot nozzles, a glue feeding nozzle and an insert, the first hot nozzle is connected to the second hot nozzle through the insert, and the glue feeding nozzle is used for injecting plastic into the hot runner upper mold; the first hot nozzle and the second hot nozzle are both used for controlling plastic in the hot runner upper mold to flow into the hot runner lower mold, and the third hot nozzle is used for controlling the plastic in the hot runner upper mold and the hot runner lower mold to be injected into a cavity of the injection mold. According to the scheme, the problems that in a traditional hot runner system, the operation mode that glue feeding of the hot runner upper mold and the hot runner lower mold is achieved through two glue feeding nozzles needs to control the plastic injection amount of the two glue feeding nozzles respectively, operation complexity is increased, and plastic injection is not uniform possibly are solved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically a double-sided balanced injection hot runner system. Background Technology

[0002] In the field of injection molding technology, injection molds are key equipment for manufacturing plastic products, and their design directly affects the production efficiency and quality of the products. To improve injection efficiency and ensure product quality, hot runner systems are widely used in existing injection molds. Hot runner systems effectively reduce plastic waste in the mold and improve the molding quality by precisely controlling the flow and temperature of the plastic. Traditional hot runner systems mainly consist of an upper hot runner mold and a lower hot runner mold, each with its own injection nozzle. In actual operation, when injection molding is required, operators need to inject plastic material into the injection nozzles of both the upper and lower hot runner molds separately. While this method meets the needs of injection molding to some extent, the operator needs to control the amount of plastic injected into each nozzle separately, which not only increases the complexity of the operation but may also lead to uneven plastic injection, affecting the molding effect of the plastic product. Utility Model Content

[0003] To address the aforementioned shortcomings, this invention proposes a dual-sided balanced injection hot runner system. The aim is to solve the problem that in traditional hot runner systems, the operation of injecting plastic into the upper and lower molds via two injection nozzles requires separate control of the plastic injection volume of each nozzle. This not only increases the complexity of the operation but may also lead to uneven plastic injection.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A double-sided balanced injection hot runner system includes a hot runner upper mold, a hot runner lower mold, a first hot nozzle, a second hot nozzle, at least six third hot nozzles, an injection nozzle, and inserts. The hot runner upper mold has a first main runner and a first upper mold runner inside. The hot runner lower mold has a first lower mold runner inside. The first hot nozzle has a second main runner and a second upper mold runner inside. The second hot nozzle has a second lower mold runner inside. The third hot nozzles have injection runners inside.

[0006] The first hot nozzle is inserted into the upper mold of the hot runner, and the second hot nozzle is inserted into the lower mold of the hot runner. The first hot nozzle and the second hot nozzle are arranged symmetrically above and below each other. The first hot nozzle is connected to the second hot nozzle through the insert. The second upper mold flow channel is connected to the second lower mold flow channel.

[0007] The injection nozzle is disposed on the hot runner upper mold. The interior of the injection nozzle is connected to the first main channel. The first main channel is connected to the second main channel. The first upper mold flow channel is connected to the second upper mold flow channel. The second main channel is connected to the second upper mold flow channel.

[0008] Three of the third hot nozzles are inserted into the upper mold of the hot runner, and the injection runners of the three third hot nozzles are all connected to the runner of the first upper mold; the other three third hot nozzles are inserted into the lower mold of the hot runner, and the injection runners of the three third hot nozzles are all connected to the runner of the first lower mold; the third hot nozzles inserted into the upper mold of the hot runner and the third hot nozzles inserted into the lower mold of the hot runner are symmetrically distributed vertically.

[0009] The injection nozzle is used to inject plastic into the interior of the hot runner upper mold. The first and second hot nozzles are both used to control the plastic in the hot runner upper mold to flow into the hot runner lower mold. The third hot nozzle is used to control the plastic in the hot runner upper mold and the hot runner lower mold to be injected into the cavity of the injection mold.

[0010] Preferably, the first hot nozzle includes a first cylinder, a first valve needle, a first nozzle body, and a first nozzle head. The first nozzle body is provided with a second main flow channel and a second upper mold flow channel. The first nozzle head is provided with a first discharge port penetrating through the first nozzle head in the vertical direction. The first cylinder is connected to the upper surface of the hot runner upper mold. The upper end of the first nozzle body is connected to the lower surface of the hot runner upper mold. The first nozzle head is disposed at the lower end of the first nozzle body. The upper end of the first valve needle is connected to the driving end of the first cylinder. The first valve needle passes through the hot runner upper mold, the second upper mold flow channel, and the first nozzle head sequentially from top to bottom. The first cylinder is used to drive the first valve needle to move up and down.

[0011] Preferably, the second hot nozzle includes a second cylinder, a second valve needle, a second nozzle body, and a second nozzle head. The second nozzle body has a second lower mold flow channel inside, and the second nozzle head has a second discharge port that penetrates through the second nozzle head in the vertical direction. The second cylinder is connected to the lower surface of the hot runner lower mold, the lower end of the second nozzle body is connected to the upper surface of the hot runner lower mold, the second nozzle head is located at the upper end of the second nozzle body, and the lower end of the second valve needle is connected to the driving end of the second cylinder. The second valve needle passes through the hot runner lower mold, the second lower mold flow channel, and the second nozzle head sequentially from bottom to top. The second cylinder is used to drive the second valve needle to move up and down.

[0012] Preferably, the insert includes a first connecting portion and a second connecting portion; the upper surface of the first connecting portion is provided with a first mounting groove, the lower surface of the first connecting portion is provided with a protrusion, and the upper edge of the first connecting portion is provided with a first through hole penetrating the bottom of the first mounting groove and the protrusion, and the first nozzle body is installed in the first mounting groove; the upper surface of the second connecting portion is provided with a mating groove, the lower surface of the second connecting portion is provided with a second mounting groove, and the upper edge of the second connecting portion is provided with a second through hole penetrating the bottom of the mating groove and the bottom of the second mounting groove, the protrusion and the mating groove cooperate with each other, and the second nozzle body is installed in the second mounting groove.

[0013] Preferably, the third hot nozzle includes a third cylinder, a third valve needle, a third nozzle body, and a third nozzle head. The injection runner is disposed inside the third nozzle body, and a third discharge port is disposed through the third nozzle head in a vertical direction. The third valve needle is connected to the drive end of the third cylinder, and the third cylinder is used to drive the third valve needle to move up and down. For the third hot nozzle of the hot runner upper mold, the third cylinder is connected to the upper surface of the hot runner upper mold, and the upper end of the third nozzle body is connected to the hot runner upper surface. On the lower surface of the mold, the third nozzle is disposed at the lower end of the third nozzle body, and the third valve needle passes through the upper hot runner mold, the injection runner, and the third nozzle sequentially from top to bottom; for the third hot nozzle of the lower hot runner mold, the third cylinder is connected to the lower surface of the lower hot runner mold, the lower end of the third nozzle body is connected to the upper surface of the lower hot runner mold, the third nozzle is disposed at the upper end of the third nozzle body, and the third valve needle passes through the lower hot runner mold, the injection runner, and the third nozzle sequentially from bottom to top.

[0014] Preferably, the injection nozzle includes an annular nozzle sleeve, a fourth nozzle head, and a fourth nozzle body. The fourth nozzle body has an injection channel inside, and the fourth nozzle head has a feed port extending through it in the vertical direction. The lower end of the fourth nozzle body is connected to the upper surface of the hot runner upper mold, the fourth nozzle head is disposed at the upper end of the fourth nozzle body, the annular nozzle sleeve is fitted around the fourth nozzle head, the injection channel is connected to the first main channel, and the injection channel extends in the vertical direction.

[0015] The technical solution provided by this utility model can include the following beneficial effects:

[0016] In this design, a first hot nozzle and a sprue are provided in the upper mold of the hot runner system, and a second hot nozzle is provided in the lower mold of the hot runner system. The first hot nozzle is connected to the second hot nozzle via an insert. When injection molding is required, plastic is injected into the sprue. The plastic flows into the interior of the upper mold of the hot runner system through the sprue. By controlling the first and second hot nozzles, the plastic can be diverted from the interior of the upper mold to the interior of the lower mold, achieving a balance in the injection of plastic into the upper and lower molds. Compared to the traditional method of using two sprues for injection into the upper and lower molds of the hot runner system, this design only requires one sprue, effectively reducing the complexity of the injection operation and avoiding the problem of uneven plastic injection caused by dual sprues, thereby improving the molding effect of plastic products. Attached Figure Description

[0017] Figure 1 This is a front view of a double-sided balanced injection hot runner system;

[0018] Figure 2 yes Figure 1 A cross-sectional view along the AA direction;

[0019] Figure 3 yes Figure 2 A magnified view of a portion of region C in the middle;

[0020] Figure 4 yes Figure 1 A cross-sectional view along the BB direction;

[0021] Figure 5 yes Figure 4 A magnified view of a portion of region D in the middle;

[0022] Figure 6 This is a top view of a double-sided balanced injection hot runner system;

[0023] Figure 7 yes Figure 6 A cross-sectional view along the EE direction;

[0024] Figure 8 This is a top exploded view of an insert according to one embodiment of the present invention;

[0025] Figure 9 This is an exploded bottom view of an insert according to one embodiment of this utility model.

[0026] The components include: 1. Hot runner upper mold; 2. Hot runner lower mold; 3. First hot nozzle; 4. Second hot nozzle; 5. Third hot nozzle; 6. Injection nozzle; 7. Insert; 11. First main runner; 12. First upper mold runner; 21. First lower mold runner; 30. Second main runner; 31. Second upper mold runner; 32. First cylinder; 33. First valve needle; 34. First nozzle body; 35. First nozzle head; 40. Second lower mold runner; 41. Second cylinder; 42. Second valve needle; 43. Second nozzle body; 44. Second nozzle head; 50. Injection molding. Flow channel; 51, third cylinder; 52, third valve needle; 53, third nozzle body; 54, third nozzle head; 61, annular nozzle sleeve; 62, fourth nozzle head; 63, fourth nozzle body; 71, first connecting part; 72, second connecting part; 350, first discharge port; 440, second discharge port; 540, third discharge port; 620, inlet port; 630, glue inlet flow channel; 711, first mounting groove; 712, protrusion; 713, first through hole; 721, mating groove; 722, second mounting groove; 723, second through hole. Detailed Implementation

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] A double-sided balanced injection hot runner system includes a hot runner upper mold 1, a hot runner lower mold 2, a first hot nozzle 3, a second hot nozzle 4, at least six third hot nozzles 5, an injection nozzle 6, and an insert 7. The hot runner upper mold 1 is provided with a first main runner 11 and a first upper mold runner 12. The hot runner lower mold 2 is provided with a first lower mold runner 21. The first hot nozzle 3 is provided with a second main runner 30 and a second upper mold runner 31. The second hot nozzle 4 is provided with a second lower mold runner 40. The third hot nozzle 5 is provided with an injection runner 50.

[0032] The first hot nozzle 3 passes through the upper mold 1 of the hot runner, and the second hot nozzle 4 passes through the lower mold 2 of the hot runner. The first hot nozzle 3 and the second hot nozzle 4 are arranged symmetrically above and below each other. The first hot nozzle 3 is connected to the second hot nozzle 4 through the insert 7. The second upper mold flow channel 31 is connected to the second lower mold flow channel 40.

[0033] The injection nozzle 6 is disposed on the hot runner upper mold 1. The interior of the injection nozzle 6 is connected to the first main runner 11. The first main runner 11 is connected to the second main runner 30. The first upper mold runner 12 is connected to the second upper mold runner 31. The second main runner 30 is connected to the second upper mold runner 31.

[0034] Three of the third hot nozzles 5 are inserted into the upper mold 1 of the hot runner, and the injection runners 50 of the three third hot nozzles 5 are all connected to the first upper mold runner 12; the other three third hot nozzles 5 are inserted into the lower mold 2 of the hot runner, and the injection runners 50 of the three third hot nozzles 5 are all connected to the first lower mold runner 21; the third hot nozzles 5 inserted into the upper mold 1 of the hot runner and the third hot nozzles 5 inserted into the lower mold 2 of the hot runner are symmetrically distributed vertically.

[0035] The injection nozzle 6 is used to inject plastic into the interior of the hot runner upper mold 1. The first hot nozzle 3 and the second hot nozzle 4 are both used to control the plastic in the hot runner upper mold 1 to flow into the hot runner lower mold 2. The third hot nozzle 5 is used to control the plastic in the hot runner upper mold 1 and the hot runner lower mold 2 to be injected into the cavity of the injection mold (not shown in the figure).

[0036] This solution provides a double-sided balanced glue inlet hot runner system. In this embodiment, for example... Figure 1-2 , Figure 4 , Figure 6-7As shown, there are six third hot runner nozzles 5. The hot runner system is used in injection molds. When injection molding is required, the operator first injects plastic into the interior of the hot runner upper mold 1 through the injection nozzle 6. The plastic flows sequentially through the first main runner 11, the second main runner 30, the second upper mold runner 31, and the first upper mold runner 12, and finally flows into the injection runners 50 located inside the three third hot runner nozzles 5 of the hot runner upper mold 1. At this time, since the first hot nozzle 3 is connected to the second hot nozzle 4 through the insert 7, and the second upper mold flow channel 31 is connected to the second lower mold flow channel 40, by controlling the first hot nozzle 3 and the second hot nozzle 4, a portion of the plastic flowing into the second upper mold flow channel 31 can flow towards the first upper mold flow channel 12, while the other portion can flow sequentially through the second lower mold flow channel 40 and the first lower mold flow channel 21, and finally flow into the injection flow channels 50 located inside the three third hot nozzles 5 of the hot runner lower mold 2, thereby realizing the diversion of plastic from the interior of the hot runner upper mold 1 to the interior of the hot runner lower mold 2. Then, by controlling the six third hot nozzles 5, the plastic in the injection flow channels 50 of the six third hot nozzles 5 can be injected into the cavity of the injection mold, thereby realizing the injection molding of the plastic product. Further, the setting of the insert 7 facilitates the stable connection between the first hot nozzle 3 and the second hot nozzle 4, enabling the first hot nozzle 3 and the second hot nozzle 4 to work together to complete the injection molding task. Furthermore, the time required for plastic to flow into the three third hot nozzles 5 located in the upper mold 1 of the hot runner is the same as the time required for plastic to flow into the three third hot nozzles 5 located in the lower mold 2 of the hot runner, which can ensure the uniformity of plastic injection into the cavity of the injection mold.

[0037] In this design, a first hot nozzle 3 and a sprue 6 are provided in the upper hot runner mold 1, and a second hot nozzle 4 is provided in the lower hot runner mold 2. The first hot nozzle 3 is connected to the second hot nozzle 4 via an insert 7. When injection molding is required, plastic is injected into the sprue 6. The plastic flows into the interior of the upper hot runner mold 1 through the sprue 6. By controlling the first hot nozzle 3 and the second hot nozzle 4, the plastic can be diverted from the interior of the upper hot runner mold 1 to the interior of the lower hot runner mold 2, achieving a balance in the injection of plastic into the upper and lower hot runner molds. Compared to the traditional method of using two sprues for injection into the upper and lower hot runner molds, this design only requires one sprue, effectively reducing the complexity of the injection operation and avoiding uneven plastic injection caused by dual sprues, thereby improving the molding effect of plastic products.

[0038] Preferably, the first hot nozzle 3 includes a first cylinder 32, a first valve needle 33, a first nozzle body 34 and a first nozzle head 35. The first nozzle body 34 is provided with a second main flow channel 30 and a second upper mold flow channel 31. The first nozzle head 35 is provided with a first discharge port 350 that penetrates the first nozzle head 35 along the vertical direction.

[0039] The first cylinder 32 is connected to the upper surface of the hot runner upper mold 1, the upper end of the first nozzle body 34 is connected to the lower surface of the hot runner upper mold 1, the first nozzle head 35 is disposed at the lower end of the first nozzle body 34, the upper end of the first valve needle 33 is connected to the driving end of the first cylinder 32, and the first valve needle 33 passes through the hot runner upper mold 1, the second upper mold flow channel 31 and the first nozzle head 35 from top to bottom. The first cylinder 32 is used to drive the first valve needle 33 to move up and down.

[0040] In this embodiment, as Figure 2-3 As shown, in the initial state, the lower end of the first valve needle 33 blocks the first discharge port 350, keeping the first discharge port 350 closed. When the plastic in the second upper mold flow channel 31 needs to be diverted to the second lower mold flow channel 40 of the second hot nozzle 4, the first cylinder 32 is activated. The first cylinder 32 drives the first valve needle 33 to move upward, so that the lower end of the first valve needle 33 moves away from the first discharge port 350, thereby opening the first discharge port 350 and allowing the plastic in the second upper mold flow channel 31 to flow out from the first discharge port 350.

[0041] Preferably, the second hot nozzle 4 includes a second cylinder 41, a second valve needle 42, a second nozzle body 43 and a second nozzle head 44. The second nozzle body 43 is provided with a second lower mold flow channel 40, and the second nozzle head 44 is provided with a second discharge port 440 that penetrates the second nozzle head 44 along the vertical direction.

[0042] The second cylinder 41 is connected to the lower surface of the hot runner lower mold 2, the lower end of the second nozzle body 43 is connected to the upper surface of the hot runner lower mold 2, the second nozzle head 44 is disposed at the upper end of the second nozzle body 43, the lower end of the second valve needle 42 is connected to the driving end of the second cylinder 41, and the second valve needle 42 passes through the hot runner lower mold 2, the second lower mold flow channel 40 and the second nozzle head 44 from bottom to top in sequence. The second cylinder 41 is used to drive the second valve needle 42 to move up and down.

[0043] In this embodiment, as Figure 2-3As shown, in the initial state, the upper end of the second valve needle 42 blocks the second discharge port 440, keeping the second discharge port 440 closed. When the plastic in the second upper mold flow channel 31 flows out from the first discharge port 350, the second cylinder 41 is activated. The second cylinder 41 drives the second valve needle 42 to move downward, causing the upper end of the second valve needle 42 to move away from the second discharge port 440, thereby opening the second discharge port 440. This allows the plastic in the second upper mold flow channel 31 to flow through the second discharge port 440 into the second lower mold flow channel 40 of the second hot nozzle 4.

[0044] Preferably, the insert 7 includes a first connecting portion 71 and a second connecting portion 72;

[0045] The upper surface of the first connecting part 71 is provided with a first mounting groove 711, the lower surface of the first connecting part 71 is provided with a protrusion 712, and the first connecting part 71 is provided with a first through hole 713 in the vertical direction, penetrating the bottom of the first mounting groove 711 and the protrusion 712. The first nozzle body 34 is installed in the first mounting groove 711.

[0046] The upper surface of the second connecting part 72 is provided with a mating groove 721, and the lower surface of the second connecting part 72 is provided with a second mounting groove 722. The second connecting part 72 is provided with a second through hole 723 along the vertical direction, penetrating the bottom of the mating groove 721 and the bottom of the second mounting groove 722. The protrusion 712 cooperates with the mating groove 721, and the second nozzle body 43 is installed in the second mounting groove 722.

[0047] In this embodiment, as Figure 8-9 As shown, the insert 7 achieves a stable connection and efficient assembly between the first hot nozzle 3 and the second hot nozzle 4 through the ingenious design of the first connecting part 71 and the second connecting part 72. Since the protrusion 712 and the mating groove 721 cooperate with each other, it helps to enhance the overall connection strength of the insert 7. The first mounting groove 711 facilitates the precise positioning and installation of the first nozzle body 34, and the second mounting groove 722 facilitates the precise positioning and installation of the second nozzle body 43. The first through hole 713 and the second through hole 723 provide channels for the flow of plastic, allowing the plastic in the second upper mold flow channel 31 of the first hot nozzle 3 to flow smoothly into the second lower mold flow channel 40 of the second hot nozzle 4.

[0048] Preferably, the third hot nozzle 5 includes a third cylinder 51, a third valve needle 52, a third nozzle body 53 and a third nozzle head 54. The injection flow channel 50 is provided inside the third nozzle body 53, and a third discharge port 540 is provided through the third nozzle head 54 along the vertical direction.

[0049] The third valve needle 52 is connected to the drive end of the third cylinder 51, and the third cylinder 51 is used to drive the third valve needle 52 to move up and down.

[0050] For the third hot nozzle 5 of the hot runner upper mold 1, the third cylinder 51 is connected to the upper surface of the hot runner upper mold 1, the upper end of the third nozzle body 53 is connected to the lower surface of the hot runner upper mold 1, the third nozzle head 54 is disposed at the lower end of the third nozzle body 53, and the third valve needle 52 passes through the hot runner upper mold 1, the injection runner 50 and the third nozzle head 54 from top to bottom.

[0051] For the third hot nozzle 5 of the hot runner lower mold 2, the third cylinder 51 is connected to the lower surface of the hot runner lower mold 2, the lower end of the third nozzle body 53 is connected to the upper surface of the hot runner lower mold 2, the third nozzle head 54 is disposed at the upper end of the third nozzle body 53, and the third valve needle 52 passes through the hot runner lower mold 2, the injection runner 50 and the third nozzle head 54 from bottom to top.

[0052] In this embodiment, as Figure 4-5 As shown, taking the third hot nozzle 5, which passes through the upper mold 1 of the hot runner, as an example, in the initial state, the lower end of the third valve needle 52 blocks the third discharge port 540, keeping the third discharge port 540 in a closed state. When the plastic in the injection runner 50 needs to be injected into the cavity 80 of the injection mold 8, the third cylinder 51 is activated. The third cylinder 51 drives the third valve needle 52 to move upward, so that the lower end of the third valve needle 52 moves away from the third discharge port 540, thereby opening the third discharge port 540, thus enabling the plastic in the injection runner 50 to be injected into the cavity 80 of the injection mold 8 through the third discharge port 540.

[0053] Preferably, the glue inlet 6 includes an annular nozzle sleeve 61, a fourth nozzle head 62 and a fourth nozzle body 63. The fourth nozzle body 63 is provided with a glue inlet channel 630 inside, and the fourth nozzle head 62 is provided with a feed port 620 penetrating the fourth nozzle head 62 along the vertical direction.

[0054] The lower end of the fourth nozzle body 63 is connected to the upper surface of the hot runner upper mold 1, the fourth nozzle head 62 is disposed at the upper end of the fourth nozzle body 63, the annular nozzle sleeve 61 is sleeved around the fourth nozzle head 62, the glue inlet channel 630 is connected to the first main channel 11, and the glue inlet channel 630 extends in the vertical direction.

[0055] In this embodiment, as Figure 6-7 As shown, since the injection channel 630 inside the fourth nozzle body 63 is connected to the first main channel 11 inside the hot runner upper mold 1, it ensures that the plastic can flow smoothly into the hot runner system. In addition, the arrangement of the annular nozzle sleeve 61 helps to enhance the structural stability of the injection nozzle 6, thereby further improving the stability of the injection molding process.

[0056] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A hot runner system with two-sided balanced material introduction, characterized by: The hot runner upper mold, the hot runner lower mold, the first hot nozzle, the second hot nozzle, at least six third hot nozzles, the glue feeding nozzle and the insert block are provided with the first main runner and the first upper mold runner inside the hot runner upper mold, the first lower mold runner inside the hot runner lower mold, the second main runner and the second upper mold runner inside the first hot nozzle, the second lower mold runner inside the second hot nozzle, and the injection runner inside the third hot nozzle; The first hot nozzle is arranged in the hot runner upper mold, the second hot nozzle is arranged in the hot runner lower mold, the first hot nozzle and the second hot nozzle are arranged symmetrically, the first hot nozzle is connected to the second hot nozzle through the insert block, and the second upper mold runner is communicated with the second lower mold runner; The glue feeding nozzle is arranged in the hot runner upper mold, the inside of the glue feeding nozzle is communicated with the first main runner, the first main runner is communicated with the second main runner, the first upper mold runner is communicated with the second upper mold runner, and the second main runner is communicated with the second upper mold runner; Three third hot nozzles are arranged in the hot runner upper mold, and the injection runners of the three third hot nozzles are communicated with the first upper mold runner; three third hot nozzles are arranged in the hot runner lower mold, and the injection runners of the three third hot nozzles are communicated with the first lower mold runner; the third hot nozzles arranged in the hot runner upper mold and the third hot nozzles arranged in the hot runner lower mold are arranged symmetrically in the up-down direction; The glue feeding nozzle is used for injecting plastic into the inside of the hot runner upper mold, the first hot nozzle and the second hot nozzle are used for controlling the plastic in the hot runner upper mold to flow into the hot runner lower mold, and the third hot nozzle is used for controlling the plastic in the hot runner upper mold and the hot runner lower mold to flow into the cavity of the injection mold.

2. The hot runner system of claim 1, wherein: The first hot nozzle comprises a first cylinder, a first valve needle, a first nozzle body and a first nozzle head, the inside of the first nozzle body is provided with the second main runner and the second upper mold runner, and the first nozzle head is provided with a first discharge port penetrating the first nozzle head in the up-down direction; The first cylinder is connected to the upper surface of the hot runner upper mold, the upper end of the first nozzle body is connected to the lower surface of the hot runner upper mold, the first nozzle head is arranged at the lower end of the first nozzle body, the upper end of the first valve needle is connected to the driving end of the first cylinder, the first valve needle penetrates the hot runner upper mold, the second upper mold runner and the first nozzle head in sequence from top to bottom, and the first cylinder is used for driving the first valve needle to move up and down.

3. The hot runner system of claim 2, wherein: The second hot nozzle comprises a second cylinder, a second valve needle, a second nozzle body and a second nozzle head, the inside of the second nozzle body is provided with the second lower mold runner, and the second nozzle head is provided with a second discharge port penetrating the second nozzle head in the up-down direction; The second cylinder is connected to the lower surface of the hot runner lower mold, the lower end of the second nozzle body is connected to the upper surface of the hot runner lower mold, the second nozzle head is arranged at the upper end of the second nozzle body, the lower end of the second valve needle is connected to the driving end of the second cylinder, and the second valve needle penetrates the hot runner lower mold, the second lower mold runner and the second nozzle head from bottom to top in sequence.

4. The hot runner system of claim 3, wherein: The insert block comprises a first connecting part and a second connecting part; The upper surface of the first connecting part is provided with a first mounting groove, the lower surface of the first connecting part is provided with a convex part, a first through hole penetrating the bottom of the first mounting groove and the convex part is arranged on the first connecting part in the up-down direction, and the first nozzle body is mounted in the first mounting groove. The upper surface of the second connecting part is provided with a matching groove, the lower surface of the second connecting part is provided with a second mounting groove, a second through hole penetrating the bottom of the matching groove and the bottom of the second mounting groove is arranged on the second connecting part in the up-down direction, the convex part and the matching groove are matched with each other, and the second nozzle body is mounted in the second mounting groove.

5. The hot runner system of claim 1, wherein: The third hot nozzle comprises a third cylinder, a third valve needle, a third nozzle body and a third nozzle head, the inside of the third nozzle body is provided with the injection runner, and the third nozzle head is provided with a third discharge port penetrating the third nozzle head in the up-down direction; The third valve needle is connected to the driving end of the third cylinder, and the third cylinder is used for driving the third valve needle to move up and down; For the third hot nozzle of the hot runner upper mold, the third cylinder is connected to the upper surface of the hot runner upper mold, the upper end of the third nozzle body is connected to the lower surface of the hot runner upper mold, the third nozzle head is arranged at the lower end of the third nozzle body, and the third valve needle penetrates the hot runner upper mold, the injection runner and the third nozzle head from top to bottom in sequence; For the third hot nozzle of the hot runner lower mold, the third cylinder is connected to the lower surface of the hot runner lower mold, the lower end of the third nozzle body is connected to the upper surface of the hot runner lower mold, the third nozzle head is arranged at the upper end of the third nozzle body, and the third valve needle penetrates the hot runner lower mold, the injection runner and the third nozzle head from bottom to top in sequence.

6. The hot runner system of claim 1, wherein: The glue feeding nozzle comprises a circular ring nozzle sleeve, a fourth nozzle head and a fourth nozzle body, the inside of the fourth nozzle body is provided with a glue feeding runner, and the fourth nozzle head is provided with a feeding port penetrating the fourth nozzle head in the up-down direction; The lower end of the fourth nozzle body is connected to the upper surface of the hot runner upper mold, the fourth nozzle head is arranged at the upper end of the fourth nozzle body, the circular ring nozzle sleeve is sleeved on the periphery of the fourth nozzle head, the glue feeding runner is connected with the first main runner, and the glue feeding runner is arranged in the up-down direction.

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