A new injection mold hot nozzle

Abstract

The utility model relates to the field of injection mold hot nozzle discloses a new injection mold hot nozzle, including flange, the lower end surface center of flange is fixedly connected with the blanking bin, the upper end surface of blanking bin is through the lower end surface of flange and reaches the upper end, the lower end surface fixedly connected with the mixing heating structure of blanking bin, the outlet bin is screwd in the lower end of mixing heating structure, the inside of outlet bin is provided with sealing structure, in the utility model, when using, the melt flows into the inside of mixing heating structure through blanking bin, further mixing and heating are carried out to the melt through the mixing heating structure set up, prevent the clogging caused by melt temperature drop, the detachable of outlet bin is realized through the threaded connection between outlet bin and mixing heating structure, the inside of outlet bin and mixing heating structure is maintained and cleaned conveniently, the sealing is realized through the sealing structure set up and opens the export when blanking, closes the export and realizes the sealing when injection is finished.

Description

Technical Field

[0001] This utility model relates to the field of hot nozzles for injection molds, and in particular to a novel hot nozzle for injection molds. Background Technology

[0002] The hot nozzle of an injection mold is a key component that connects the injection nozzle of the injection molding machine to the mold cavity. Its core function is to ensure that the material can continuously and evenly fill the cavity. Without an efficient hot nozzle system, the melt is prone to cooling and solidification during the transportation process, which leads to runner blockage, increased injection pressure loss, and more defects in the molded parts. At the same time, it will also cause material waste and increased energy consumption. Therefore, the hot nozzle directly affects the injection molding efficiency and product quality.

[0003] While traditional hot runners are typically equipped with heating coils to slow down material cooling, they still suffer from uneven temperature distribution and the formation of cold material. Especially during low-speed injection molding, the material inside the hot runner may solidify, increasing the risk of blockage. In addition, traditional hot runners are prone to material leakage or incomplete closure, requiring frequent manual cleaning and maintenance, which affects the continuity and stability of production. Therefore, those skilled in the art have provided a novel hot runner for injection molds to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel hot nozzle for injection molds. During use, the melt flows into the mixing and heating structure through the discharge hopper. The mixing and heating structure further mixes and heats the melt, preventing blockage caused by a drop in melt temperature. The discharge hopper is detachable via a threaded connection between it and the mixing and heating structure, facilitating maintenance and cleaning of both. A sealing structure allows the outlet to be opened during discharge and closed at the end of injection molding to achieve a seal.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel injection mold hot nozzle, comprising a flange, a material feeding bin fixedly connected to the center of the lower end face of the flange, the upper end face of the material feeding bin penetrating the lower end face of the flange and extending to the upper end, a mixing heating structure fixedly connected to the lower end face of the material feeding bin, a discharge bin threadedly connected to the lower end of the mixing heating structure, and a sealing structure provided inside the discharge bin;

[0006] The hybrid heating structure includes a heating chamber, the upper end face of which is fixedly connected to the center of the lower end face of the feeding chamber. A first slot is opened inside the inner sidewall of the heating chamber. A material leakage plate is fixedly connected to the upper edge of the center of the inner sidewall of the heating chamber. A hollow rod is fixedly connected to the center of the lower end face of the material leakage plate. Multiple spiral plates are fixedly connected to the outer sidewall of the hollow rod. The multiple spiral plates are arranged in an alternating manner. An electric heating wire is fixedly connected to the inner sidewall of the hollow rod.

[0007] With the above technical solution, when in use, the melt flows through the discharge plate and over the outer wall of the hollow rod, and is heated by the heating wire installed inside the hollow rod. The heat is conducted through multiple spiral plates to achieve uniform heating of the melt. The multiple spiral plates break up and recombine the falling melt, further mixing the material.

[0008] Furthermore, the sealing structure includes a push plate, a second slot is provided inside the inner wall of the discharge bin, the push plate is slidably connected inside the second slot, a spring is fixedly connected to the center of one side wall of the push plate to one inner wall of the second slot, a push rod is fixedly connected to the center of the other side wall of the push plate, the other end of the push rod passes through one inner wall of the second slot and leads to the interior of the discharge bin, and a sealing plate is fixedly connected to the end of the push rod, a Z-shaped plate is fixedly connected to the upper end of the inner wall of the discharge bin, and a through hole is provided at the center of one side wall of the Z-shaped plate;

[0009] With the above technical solution, during use, the melt flows through the through hole and applies pressure to the sealing plate. The melt forces the sealing plate and push rod to move, and the sealing plate disengages from the Z-shaped plate to open the channel. When the injection molding ends, the melt pressure decreases, and the spring pushes the push plate to slide inside the second groove, pushing the sealing plate to press tightly against the Z-shaped plate, so that the channel is closed and a seal is achieved.

[0010] Furthermore, two high-temperature resistant rubbers are fixedly connected sequentially from the inside to the outside at the center of the upper end face of the lower discharge hopper of the hybrid heating structure.

[0011] The above technical solution uses two high-temperature resistant rubber units to achieve a seal between the discharge hopper and the mixing and heating structure, reducing material leakage.

[0012] Furthermore, the material leakage plate is a hemispherical arc-shaped plate;

[0013] Through the above technical solution, the hemispherical shape of the discharge plate can facilitate the falling of the molten material and prevent material accumulation.

[0014] Furthermore, a copper washer is fixedly connected at the center of the upper end face of the flange;

[0015] The above technical solution achieves overall sealing of the device by using a copper gasket, preventing molten material from overflowing.

[0016] Furthermore, multiple bolts are fixedly connected to the center of the lower end face of the flange near the edge;

[0017] The above technical solution uses multiple bolts to fix the entire device, thereby improving stability.

[0018] Furthermore, multiple anti-slip strips are fixedly connected to the center of the outer side wall of the discharge hopper;

[0019] The above technical solution increases friction by setting multiple anti-slip strips, making it easier to disassemble the discharge hopper and maintain the device.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, through the set mixing heating structure, when in use, the melt flows through the leakage plate and passes through the outer wall of the hollow rod, and is heated by the electric heating wire set inside the hollow rod. The heat is conducted through multiple spiral plates to achieve uniform heating of the melt. The set multiple spiral plates break up and recombine the falling melt, so that the material is further mixed.

[0022] 2. In this utility model, through the sealing structure, when in use, the melt flows through the through hole and applies pressure to the sealing plate. The melt forces the sealing plate and the push rod to move, and the sealing plate disengages from the Z-shaped plate to open the channel. When the injection molding ends, the melt pressure decreases, and the spring pushes the push plate to slide inside the second groove, pushing the sealing plate to stick tightly to the Z-shaped plate, so that the channel is closed and a seal is achieved. Attached Figure Description

[0023] Figure 1 This is an isometric view of a novel injection mold hot nozzle proposed in this utility model;

[0024] Figure 2 Another isometric view of a novel hot nozzle for an injection mold proposed in this utility model;

[0025] Figure 3 This is a cross-sectional view of a novel hot nozzle for an injection mold proposed in this utility model;

[0026] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0027] Legend:

[0028] 1. Flange; 2. Bolt; 3. Feeding bin; 4. Mixing and heating structure; 401. Discharge plate; 402. Hollow rod; 403. Heating wire; 404. First slot; 405. Spiral plate; 406. Heating chamber; 5. Anti-slip strip; 6. Discharge bin; 7. Copper gasket; 8. Sealing structure; 801. Second slot; 802. Spring; 803. Push plate; 804. Push rod; 805. Through hole; 806. Z-shaped plate; 807. Sealing plate; 9. High-temperature resistant rubber. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 1-4 An embodiment of this utility model is provided: a novel hot nozzle for injection molds, including a flange 1, a feeding chamber 3 fixedly connected to the center of the lower end face of the flange 1, the upper end face of the feeding chamber 3 penetrating through the lower end face of the flange 1 and extending to the upper end, a mixing heating structure 4 fixedly connected to the lower end face of the feeding chamber 3, a discharge chamber 6 threadedly connected to the lower end of the mixing heating structure 4, and a sealing structure 8 provided inside the discharge chamber 6;

[0031] The mixing heating structure 4 includes a heating chamber 406, the upper end of which is fixedly connected to the center of the lower end of the feeding chamber 3. A first slot 404 is opened inside the inner wall of the heating chamber 406. A material leakage plate 401 is fixedly connected to the upper edge of the center of the inner wall of the heating chamber 406. A hollow rod 402 is fixedly connected to the center of the lower end of the material leakage plate 401. Multiple spiral plates 405 are fixedly connected to the outer wall of the hollow rod 402. The multiple spiral plates 405 are arranged in an alternating pattern. An electric heating wire 403 is fixedly connected to the inner wall of the hollow rod 402. In use, the melt flows through the material leakage plate 401 and through the outer wall of the hollow rod 402. It is heated by the electric heating wire 403 installed inside the hollow rod 402. The heat is conducted through the multiple spiral plates 405 to achieve uniform heating of the melt. The multiple spiral plates 405 disperse and recombine the falling melt, further mixing the materials.

[0032] The sealing structure 8 includes a push plate 803. A second slot 801 is formed inside the inner wall of the discharge chamber 6. The push plate 803 is slidably connected to the inside of the second slot 801. A spring 802 is used to fix the center of one side wall of the push plate 803 to one inner wall of the second slot 801. A push rod 804 is fixedly connected to the center of the other side wall of the push plate 803. The other end of the push rod 804 passes through one inner wall of the second slot 801 and leads to the inside of the discharge chamber 6, with a sealing plate 807 fixedly connected to its end. The upper part of the inner wall of the discharge chamber 6... A Z-shaped plate 806 is fixedly connected. A through hole 805 is opened at the center of one side wall of the Z-shaped plate 806. During use, the melt flows through the through hole 805 and applies pressure to the sealing plate 807. The melt forces the sealing plate 807 and the push rod 804 to move. The sealing plate 807 disengages from the Z-shaped plate 806, opening the channel. When the injection ends, the melt pressure decreases, and the spring 802 pushes the push plate 803 to slide inside the second groove 801, pushing the sealing plate 807 to press tightly against the Z-shaped plate 806, closing the channel and achieving a seal.

[0033] Two high-temperature resistant rubbers 9 are fixedly connected from the inside to the outside at the center of the upper end face of the lower end discharge hopper 6 of the mixing heating structure 4. The two high-temperature resistant rubbers 9 are used to seal the discharge hopper 6 and the mixing heating structure 4, reducing the occurrence of material leakage.

[0034] The material discharge plate 401 is a hemispherical arc plate. The hemispherical shape of the material discharge plate 401 facilitates the falling of the molten material and prevents material accumulation.

[0035] A copper gasket 7 is fixedly connected at the center of the upper end face of flange 1. The copper gasket 7 has good thermal conductivity, can dissipate heat quickly, and adapt to high temperature environment. At the same time, the copper gasket 7 also has high strength and wear resistance, and can withstand greater pressure and friction. The copper gasket 7 is used to achieve overall sealing of the device and prevent molten material from overflowing.

[0036] Multiple bolts 2 are fixedly connected to the center of the lower end face of flange 1 near the edge. The multiple bolts 2 are used to fix the whole device and improve stability.

[0037] Multiple anti-slip strips 5 are fixedly connected to the center of the outer wall of the discharge bin 6. The multiple anti-slip strips 5 increase friction, making it easier to disassemble the discharge bin 6 and facilitate device maintenance.

[0038] Working Principle: This utility model is a novel hot nozzle for injection molds. During use, the molten material flows into the mixing and heating structure 4 through the feeding bin 3. The molten material flows through the discharge plate 401 and over the outer wall of the hollow rod 402, where it is heated by the heating wire 403 inside the hollow rod 402. The heat is conducted through multiple spiral plates 405, achieving uniform heating of the molten material. The multiple spiral plates 405 disperse and recombine the falling molten material, further mixing the material. The molten material flows into the discharge bin 6 and passes through the through hole 805 for sealing. Pressure is applied to plate 807, and the melt forces the sealing plate 807 and push rod 804 to move. The sealing plate 807 disengages from the Z-shaped plate 806, opening the channel. When the injection ends, the melt pressure decreases, and the spring 802 pushes the push plate 803 to slide inside the second slot 801, pushing the sealing plate 807 to press tightly against the Z-shaped plate 806, closing the channel and achieving a seal. The discharge chamber 6 is detachable through the threaded connection between the discharge chamber 6 and the mixing and heating structure 4, facilitating maintenance and cleaning of the interior of the discharge chamber 6 and the mixing and heating structure 4.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel injection mold hot runner, comprising a flange (1), characterized in that: A feeding bin (3) is fixedly connected to the center of the lower end face of the flange (1). The upper end face of the feeding bin (3) penetrates the lower end face of the flange (1) and extends to the upper end. A mixing heating structure (4) is fixedly connected to the lower end face of the feeding bin (3). A discharge bin (6) is threadedly connected to the lower end of the mixing heating structure (4). A sealing structure (8) is provided inside the discharge bin (6). The hybrid heating structure (4) includes a heating chamber (406), the upper end face of which is fixedly connected to the center of the lower end face of the feeding chamber (3). A first slot (404) is opened inside the inner side wall of the heating chamber (406). A material leakage plate (401) is fixedly connected to the upper edge of the center of the inner side wall of the heating chamber (406). A hollow rod (402) is fixedly connected to the center of the lower end face of the material leakage plate (401). Multiple spiral plates (405) are fixedly connected to the outer side wall of the hollow rod (402). The multiple spiral plates (405) are arranged in an alternating manner. An electric heating wire (403) is fixedly connected to the inner side wall of the hollow rod (402).

2. The novel injection mold hot runner according to claim 1, characterized in that: The sealing structure (8) includes a push plate (803). A second slot (801) is provided inside the inner wall of the discharge bin (6). The push plate (803) is slidably connected inside the second slot (801). A spring (802) is used to fix the center of one side wall of the push plate (803) to one inner wall of the second slot (801). A push rod (804) is fixedly connected to the center of the other side wall of the push plate (803). The other end of the push rod (804) passes through one inner wall of the second slot (801) and leads to the interior of the discharge bin (6), and a sealing plate (807) is fixedly connected to the end. A Z-shaped plate (806) is fixedly connected to the upper part of the inner wall of the discharge bin (6). A through hole (805) is provided at the center of one side wall of the Z-shaped plate (806).

3. The novel injection mold hot runner according to claim 1, characterized in that: Two high-temperature resistant rubbers (9) are fixedly connected from the inside to the outside at the center of the upper end face of the lower end discharge hopper (6) of the hybrid heating structure (4).

4. The novel injection mold hot runner according to claim 1, characterized in that: The material feed plate (401) is a hemispherical arc plate.

5. A novel injection mold hot runner according to claim 1, characterized in that: A copper washer (7) is fixedly connected at the center of the upper end face of the flange (1).

6. A novel injection mold hot runner according to claim 1, characterized in that: The flange (1) has multiple bolts (2) fixedly connected to the center of the lower end face near the edge.

7. A novel injection mold hot runner according to claim 1, characterized in that: Multiple anti-slip strips (5) are fixedly connected to the center of the outer wall of the discharge hopper (6).

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