Spiral type glue feeding hot runner nozzle tip convenient to clean

Abstract

The utility model relates to hot runner system technical field, specifically disclose a spiral type glue feeding hot runner nozzle tip convenient to clean. The utility model discloses a nozzle tip body, and the surface right side of nozzle tip body is equipped with spiral groove, and the inside of nozzle tip body is provided with filter mechanism, and the surface of nozzle tip body is provided with temperature control mechanism. The utility model discloses a spiral type glue feeding hot runner nozzle tip convenient to clean, through the spiral groove of setting, realizes detachable connecting structure, and nozzle tip body can be individually detached from hot runner main part, and whole hot runner system does not need to be disassembled, and the process of detaching only needs to rotate and can be completed, and the time of operation consumption is shortened to 1 / 5 of the original mode, realizes the effect that it is convenient to clean, through the locking nut screw thread connection to the surface of limiting rod, can position filter screen to realize the installation of filter screen, can improve the purity of injection liquid, avoid the impurity in injection liquid to enter injection mold and lead to the quality reduction of injection mold and other problems.

Description

Technical Field

[0001] This utility model relates to the field of hot runner system technology, and in particular to a spiral hot runner nozzle tip that is easy to clean. Background Technology

[0002] In the field of injection molding, hot runner systems are widely used in the production of various plastic products because they can reduce material consumption and improve molding efficiency. The hot runner nozzle, as the core component of the hot runner system, is directly connected to the mold cavity and is responsible for accurately delivering the molten plastic into the cavity.

[0003] Currently, most hot runner nozzles on the market adopt a straight-tube or simple stepped injection structure, and the nozzle tip is usually integrated with the hot runner body or uses a complex fixing connection method. In actual use, this type of structure has obvious drawbacks:

[0004] For nozzles with integrated or complex fixed connections, cleaning requires disassembling the entire hot runner assembly, which is cumbersome, time-consuming, and seriously affects production efficiency. Furthermore, frequent disassembly can lead to a decrease in the sealing performance of the hot runner system, increasing the risk of material leakage. Summary of the Invention

[0005] The purpose of this invention is to provide a spiral hot runner nozzle tip that is easy to clean, in order to solve the problems mentioned in the background art.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A spiral hot runner nozzle tip that is easy to clean includes a nozzle tip body, a spiral groove on the right side of the nozzle tip body surface, a filter mechanism inside the nozzle tip body, and a temperature control mechanism on the surface of the nozzle tip body.

[0008] The filtering mechanism includes a filter screen disposed within the mouth tip body. A circular slot is formed within the filter screen, and a limiting rod is inserted into the circular slot. A fixing member is fixedly connected to the right side of the limiting rod, and the fixing member is fixedly connected to the inner wall of the mouth tip body.

[0009] Preferably, a fixing ring is fixedly connected to the surface of the fixing member, and the fixing ring is in contact with the surface of the filter screen. The full contact between the fixing ring and the surface of the filter screen avoids the filter screen from deforming due to uneven local stress.

[0010] Preferably, the limiting rod surface is provided with threads, and a locking nut is threadedly connected to the limiting rod surface. By tightening the locking nut by its threads, the filter screen is firmly fixed between the limiting rod and the fixing part, preventing the filter screen from loosening due to the impact of high-temperature molten rubber.

[0011] Preferably, a limiting groove is formed at the edge of the filter screen, and a limiting plate is inserted into the limiting groove. The limiting plate is fixedly connected to the inner wall of the nozzle body. The limiting groove at the edge of the filter screen cooperates with the limiting plate to prevent the filter screen from rotating with the adhesive when the adhesive flows (preventing pore size displacement and filtration failure).

[0012] Preferably, the temperature control mechanism includes a kit, which is fixedly connected to the surface of the nozzle body. A heating coil is fitted inside the kit, and a temperature sensor is fixedly connected to the inner wall of the nozzle body. The temperature sensor is directly fixed to the inner wall of the nozzle body and can accurately sense the actual temperature of the area in contact with the adhesive.

[0013] Preferably, the temperature sensor is a K-type thermocouple with a temperature control accuracy of ±1℃. The high-precision temperature control of ±1℃ can strictly control the temperature fluctuation of the nozzle tip body, ensuring that the molten adhesive is always in the optimal flow state—it will not cause uneven adhesive feeding speed due to temperature fluctuations, nor will it produce adhesive residue due to local cooling (reducing the cleaning frequency and further meeting the requirement of "easy to clean").

[0014] Preferably, the nozzle tip body is made of heat-resistant stainless steel. The surface of heat-resistant stainless steel is smooth and does not easily stick to adhesives. Residual adhesives can be more easily peeled off during cleaning (directly enhancing the core function of "easy to clean"). In addition, the material has high hardness and is not easy to scratch the surface of the body during cleaning (avoiding the accumulation of scratches that aggravate adhesive residue).

[0015] Compared with the prior art, this utility model provides a spiral hot runner nozzle tip that is easy to clean, and has the following beneficial effects:

[0016] 1. This easy-to-clean spiral hot runner nozzle tip features a detachable connection structure via a spiral groove. The nozzle tip body can be detached from the hot runner body without disassembling the entire hot runner system. The disassembly process can be completed simply by rotating the nozzle, reducing the operation time to 1 / 5 of the original method and achieving an easy-to-clean effect.

[0017] 2. This easy-to-clean spiral hot runner nozzle tip, by connecting the locking nut threaded to the surface of the limiting rod, can position the filter screen, thereby realizing the installation of the filter screen. This can improve the purity of the injection molding liquid and prevent impurities in the injection molding liquid from entering the injection mold, which would lead to problems such as reduced quality of the injection mold. This improves the practicality of the spiral hot runner nozzle tip.

[0018] 3. The easy-to-clean spiral hot runner nozzle tip has a heating coil that is electrically connected to an external temperature control system to maintain the temperature of the melt inside the spiral hot runner. A temperature sensor is embedded inside the nozzle tip body to monitor the runner temperature in real time and feed it back to the temperature control system to achieve precise temperature control. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the filtration mechanism of this utility model;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 5 This is a partial structural diagram of the filtration mechanism of this utility model;

[0024] Figure 6 This is a schematic diagram of the temperature control mechanism of this utility model.

[0025] In the diagram: 1- Nozzle body; 2- Filtering mechanism; 21- Fixing component; 22- Fixing ring; 23- Filter screen; 24- Limiting plate; 25- Limiting rod; 3- Temperature control mechanism; 31- Temperature sensor; 32- Kit; 33- Heating coil; 4- Spiral groove. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figures 1-5 As shown, a spiral hot runner nozzle tip that is easy to clean includes a nozzle tip body 1. A spiral groove 4 is provided on the right side of the surface of the nozzle tip body 1. A filter mechanism 2 is provided inside the nozzle tip body 1. A temperature control mechanism 3 is provided on the surface of the nozzle tip body 1. The filter mechanism 2 includes a filter screen 23, which is disposed inside the nozzle tip body 1. A circular slot is provided inside the filter screen 23. A limiting rod 25 is inserted into the circular slot. A fixing member 21 is fixedly connected to the right side of the limiting rod 25. The fixing member 21 is fixedly connected to the inner wall of the nozzle tip body 1.

[0029] In this embodiment, a fixing ring 22 is fixedly connected to the surface of the fixing member 21. The fixing ring 22 is in contact with the surface of the filter screen 23. By fully contacting the fixing ring 22 with the surface of the filter screen 23, the filter screen 23 is prevented from deforming due to uneven local stress.

[0030] In this embodiment, the surface of the limiting rod 25 is provided with threads, and a locking nut is threadedly connected to the surface of the limiting rod 25. By tightening the threads of the locking nut, the filter screen 23 is firmly fixed between the limiting rod 25 and the fixing member 21, preventing the filter screen 23 from loosening due to the impact of the high-temperature molten rubber.

[0031] Furthermore, a limiting groove is provided at the edge of the filter screen 23, and a limiting plate 24 is inserted into the limiting groove. The limiting plate 24 is fixedly connected to the inner wall of the nozzle body 1. The limiting groove at the edge of the filter screen 23 cooperates with the limiting plate 24 to prevent the filter screen 23 from rotating with the adhesive when the adhesive flows (to prevent the aperture from shifting and the filter from failing).

[0032] Example 2

[0033] See Figure 6 Furthermore, based on Embodiment 1, the temperature control mechanism 3 further includes a kit 32, which is fixedly connected to the surface of the nozzle body 1. A heating coil 33 is fitted inside the kit 32, and a temperature sensor 31 is fixedly connected to the inner wall of the nozzle body 1. The temperature sensor 31 is directly fixed to the inner wall of the nozzle body 1 and can accurately sense the actual temperature of the area in contact with the adhesive.

[0034] Furthermore, the temperature sensor 31 is a K-type thermocouple with a temperature control accuracy of ±1℃. The high-precision temperature control of ±1℃ can strictly control the temperature fluctuation of the nozzle body 1, ensuring that the molten adhesive is always in the optimal flow state—it will not cause uneven adhesive feeding speed due to temperature fluctuations, nor will it produce adhesive residue due to local cooling (reducing the cleaning frequency and further meeting the "easy to clean" requirement).

[0035] Furthermore, the mouthpiece body 1 is made of heat-resistant stainless steel. The surface of heat-resistant stainless steel is smooth and does not easily stick to adhesives. When cleaning, residual adhesives can be more easily peeled off (directly strengthening the core function of "easy to clean"). In addition, the material has high hardness and is not easy to scratch the surface of the body during cleaning (avoiding the accumulation of scratches that will aggravate adhesive residue).

[0036] In actual operation, when this device is used, the filter screen 23 is first placed inside the nozzle body 1. When the limiting plate 24 is inserted into the corresponding limiting groove, the limiting rod 25 is inserted into the circular hole groove. Then, by connecting the locking nut to the surface of the limiting rod 25, the filter screen 23 can be positioned, thereby realizing the installation of the filter screen 23. This can improve the purity of the injection molding liquid and prevent impurities in the injection molding liquid from entering the injection mold, which would lead to a decrease in the quality of the injection mold. This improves the practicality of the spiral hot runner nozzle.

[0037] The heating coil 33 is electrically connected to an external temperature control system to maintain the temperature of the melt in the spiral glue inlet channel; the temperature sensor 31 is embedded inside the nozzle tip body 1 to monitor the channel temperature in real time and feed it back to the temperature control system to achieve precise temperature control.

[0038] 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 spiral-shaped hot runner nozzle tip for easy cleaning, comprising a nozzle tip body (1), characterized in that, A spiral groove (4) is provided on the right side of the surface of the mouth tip body (1), a filter mechanism (2) is provided inside the mouth tip body (1), and a temperature control mechanism (3) is provided on the surface of the mouth tip body (1). The filtering mechanism (2) includes a filter screen (23), which is disposed inside the mouth tip body (1). A circular slot is provided inside the filter screen (23), and a limiting rod (25) is inserted into the circular slot. A fixing member (21) is fixedly connected to the right side of the limiting rod (25), and the fixing member (21) is fixedly connected to the inner wall of the mouth tip body (1).

2. The spiral-type hot runner nozzle tip for easy cleaning according to claim 1, characterized in that, A fixing ring (22) is fixedly connected to the surface of the fastener (21), and the fixing ring (22) is in contact with the surface of the filter screen (23).

3. The spiral-type hot runner nozzle tip for easy cleaning according to claim 1, characterized in that, The limiting rod (25) has a threaded surface, and a locking nut is threadedly connected to the limiting rod (25).

4. The spiral-type hot runner nozzle tip for easy cleaning according to claim 1, characterized in that, A limiting groove is provided at the edge of the filter screen (23), and a limiting plate (24) is inserted into the limiting groove. The limiting plate (24) is fixedly connected to the inner wall of the mouth tip body (1).

5. The spiral-type hot runner nozzle tip for easy cleaning according to claim 1, characterized in that, The temperature control mechanism (3) includes a kit (32), which is fixedly connected to the surface of the mouth tip body (1). A heating coil (33) is fitted inside the kit (32), and a temperature sensor (31) is fixedly connected to the inner wall of the mouth tip body (1).

6. The spiral-type hot runner nozzle tip for easy cleaning according to claim 5, characterized in that, The temperature sensor (31) is a K-type thermocouple with a temperature control accuracy of ±1℃.

7. The spiral-type hot runner nozzle tip for easy cleaning according to claim 1, characterized in that, The mouth tip body (1) is made of heat-resistant stainless steel.

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