Hot runner nozzle tip convenient to disassemble

Abstract

The utility model discloses a hot runner nozzle tip convenient to disassemble, which comprises a hot nozzle body, a feed port and a material flowing channel are arranged in the hot nozzle body, the bottom end of the material flowing channel is spherical, a discharge hole is arranged at the bottom end of the material flowing channel, the hot nozzle body comprises a connecting part, a valve core and an end part, and threads are arranged on the outer wall of the connecting part. Compared with the prior art, the nozzle has the beneficial effects that by arranging the feeding hole of the horn sleeve and the material flowing channel with the spherical top end, a plastic solution can be fully conveyed by the nozzle tip, material accumulation is avoided, the production cost is saved, and in addition, the connecting part is directly provided with the threads and is connected with a hot runner, so that the nozzle is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a hot runner nozzle tip that is easy to disassemble. Background Art

[0002] Hot runners are becoming more and more popular in molds. Various products are developing towards hot runner molds. However, many special-shaped products or products with complex structures are limited by conventional hot runner structures and cannot use hot runners, so the products still use cold runner injection or semi-hot runner injection with material head. This structure has the following problems: the plastic material solution in the runner is always present after the hot runner is injected and then transferred to the cold runner. After the injection molding is completed, it becomes waste. Usually, this type of high-cavity mold is designed for some small products, such as syringe needle caps and suction tips in the medical industry, lipstick shells, pen holders and other products with small diameters and long lengths in the packaging industry. The material wasted by the hot runner is often more than that used by the product itself, which will increase the production cost of the enterprise. Utility Model Content

[0003] The utility model aims to provide a hot runner nozzle tip that is easy to disassemble, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot runner nozzle tip that is easy to disassemble, comprising a hot nozzle body, wherein a feed port and a flow channel are arranged in the hot nozzle body, the bottom end of the flow channel is spherical, and a discharge hole is arranged at the bottom end of the flow channel, the hot nozzle body comprises a connecting part, a valve core and an end part, and the outer wall of the connecting part is provided with a thread.

[0005] Preferably, the end portion is made of tungsten steel.

[0006] Preferably, the diameter of the connecting portion is larger than the diameter of the valve core.

[0007] Preferably, the feed port comprises a positioning portion and a spraying portion, the positioning portion is connected to the outlet of the hot runner for positioning, and the spraying portion is connected to the positioning portion.

[0008] Preferably, the spraying portion is in the shape of a trumpet with the tip pointing downward.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model, by providing a feed port with a trumpet sleeve and a flow channel with a spherical top, can ensure that the plastic solution is fully transported by the nozzle tip, and material accumulation will not occur, thus saving production costs. In addition, the present application directly provides a thread on the connecting part to connect it to the hot runner for easy disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1It is a schematic diagram of the structure of the utility model.

[0011] In the figure: 1, nozzle body; 11, feed port; 111, positioning portion; 112, spraying portion; 12, flow channel; 2, discharge hole; 3, connecting portion; 4, valve core; 5, end portion. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] See also Figure 1 The utility model provides a technical solution: a hot runner nozzle tip that is easy to disassemble, including a hot nozzle body 1, wherein a feed port 11 and a flow channel 12 are arranged in the hot nozzle body 1, wherein the bottom end of the flow channel 12 is spherical, and a discharge hole 2 is arranged at the bottom end of the flow channel 12, the hot nozzle body includes a connecting part 3, a valve core 4 and an end part 5, and the outer wall of the connecting part 3 is provided with a thread.

[0014] Specifically, the end 5 is made of tungsten steel, and the end is welded to the nozzle tip by diffusion welding process, which effectively ensures the temperature of the nozzle tip, and conducts heat to the head through high-conductivity beryllium copper. In addition, due to the wear resistance of tungsten steel, the problem of nozzle tip wear is effectively solved.

[0015] Specifically, the diameter of the connecting portion 3 is greater than the diameter of the valve core 4 .

[0016] Specifically, the feed port 11 includes a positioning portion 111 and a spraying portion 112 . The positioning portion 111 is connected to the outlet of the hot runner for positioning, and the spraying portion 112 is connected to the positioning portion 111 .

[0017] Specifically, the spraying portion 112 is in the shape of a bell-mouth with the tip pointing downward. The bell-mouth shape can increase the pressure of the solution and increase the flow rate during feeding, which matches the spherical shape of the bottom end of the flow channel 12 .

Claims

1. A hot runner nozzle tip that is easy to disassemble, characterized in that: The invention comprises a hot nozzle body (1), wherein a feed port (11) and a flow channel (12) are provided in the hot nozzle body (1), the bottom end of the flow channel (12) is spherical, and a discharge hole (2) is provided at the bottom end of the flow channel (12), and the hot nozzle body comprises a connecting part (3), a valve core (4) and an end part (5), and the outer wall of the connecting part (3) is provided with a thread.

2. The easily disassembled hot runner nozzle tip according to claim 1, characterized in that: The end portion (5) is made of tungsten steel.

3. The easily disassembled hot runner nozzle tip according to claim 2, characterized in that: The diameter of the connecting portion (3) is greater than the diameter of the valve core (4).

4. The easily disassembled hot runner nozzle tip according to claim 3, characterized in that: The feed port (11) comprises a positioning portion (111) and a spraying portion (112); the positioning portion (111) is connected to an outlet of a hot runner for positioning; and the spraying portion (112) is connected to the positioning portion (111).

5. The easily disassembled hot runner nozzle tip according to claim 4, characterized in that: The material spraying portion (112) is in the shape of a bell mouth with the tip pointing downward.

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