CN211968276U

CN211968276U - Injection nozzle with cooling sleeve for injection molding hot runner

Info

Publication number: CN211968276U
Application number: CN202020014420.6U
Authority: CN
Inventors: 何志武
Original assignee: Suzhou Hillin Machinery Technology Co ltd
Current assignee: Suzhou Hillin Machinery Technology Co ltd
Priority date: 2020-01-05
Filing date: 2020-01-05
Publication date: 2020-11-20
Anticipated expiration: 2030-01-05

Abstract

The utility model discloses a nozzle with a cooling jacket for an injection molding hot runner, which comprises a nozzle body, a cooling jacket sleeved outside the nozzle body, and a connecting end arranged at the tail end of the cooling jacket; the cooling jacket is of a cylindrical structure, and the front part of the cooling jacket is gradually contracted into a conical structure; a high-temperature-resistant silica gel sealing ring is arranged at the front end of the cooling jacket; a water cooling pipe is arranged in the sleeve wall of the cooling sleeve; the water cooling pipe comprises a communicating pipe part and a radiating pipe part; the heat dissipation pipe part is positioned at the front part of the cooling jacket, and the heat dissipation pipe part winds around the cooling jacket in an S-shaped curve in a reciprocating manner for a circle; the communicating pipe part comprises a water inlet pipe and a water outlet pipe; the two ends of the radiating pipe part are respectively connected with the water inlet pipe and the water outlet pipe.

Description

Injection nozzle with cooling sleeve for injection molding hot runner

Technical Field

The utility model relates to an injection mold field, in particular to injection molding hot runner takes nozzle of cooling jacket.

Background

The injection mold is an important process device for producing various industrial products, and along with the rapid development of the plastic industry and the popularization and application of plastic products in the industrial departments of aviation, aerospace, electronics, machinery, ships, automobiles and the like, the application range of the injection mold is more and more extensive. An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a processing method used for mass production of parts with complex shapes, and particularly relates to a method for injecting heated and melted plastic into a mold cavity from an injection molding machine at high pressure, and obtaining a formed product after cooling and solidification.

Nozzles currently used for injection molding hot runners are generally of two types, one with a heater and the other without a heater. In the nozzle with the heater, because the injection molding gate at the front end of the nozzle does not have a good cooling and heat dissipation structure, after injection molding is completed, when a product is cooled and formed, the gate at the front end of the nozzle can influence the cooling and forming at the gate because the heat of the nozzle is higher, and the surface quality of the gate of the injection molded product is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a hot runner of moulding plastics takes cooling jacket penetrate mouth adopts the cooling jacket to improve the heat preservation and heat insulation performance who penetrates the mouth, sets up the water-cooling pipe that 3D printed in the cooling jacket, has solved the current gate department that penetrates the mouth front end, owing to penetrate the mouth heat higher, can influence the cooling shaping of gate department, influences the problem of the surface quality of injection moulding product gate department.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: a nozzle with a cooling sleeve for an injection molding hot runner comprises a nozzle body, the cooling sleeve sleeved outside the nozzle body, and a connecting end arranged at the tail end of the cooling sleeve; the cooling jacket is of a cylindrical structure, and the front part of the cooling jacket is gradually contracted into a conical structure; a high-temperature-resistant silica gel sealing ring is arranged at the front end of the cooling jacket; a water cooling pipe is arranged in the sleeve wall of the cooling sleeve; the water cooling pipe comprises a communicating pipe part and a radiating pipe part; the heat dissipation pipe part is positioned at the front part of the cooling jacket, and the heat dissipation pipe part winds around the cooling jacket in an S-shaped curve in a reciprocating manner for a circle; the communicating pipe part comprises a water inlet pipe and a water outlet pipe; the two ends of the radiating pipe part are respectively connected with the water inlet pipe and the water outlet pipe.

As a preferred embodiment of the present invention, the cooling jacket is made of copper.

As a preferred scheme of the utility model, the water-cooling pipe is made by steel.

As a preferred scheme of the utility model, the heat dissipation pipe portion is hollow flat oval tubular structure.

As an optimized scheme of the utility model, the heat dissipation pipe portion is hollow round tubular structure.

As a preferred scheme of the utility model, the connecting end is provided with a bolt hole for fixed installation; a water inlet and a water outlet are arranged on the connecting end; the water inlet pipe is connected with the water inlet; the water outlet pipe is connected with the water outlet.

Through the technical scheme, the utility model discloses technical scheme's beneficial effect is: the utility model has the advantages of simple and reasonable structure, through setting up the cooling jacket outside penetrating the mouth originally to installation special-shaped structure's water-cooled tube in the cooling jacket realizes avoiding influencing the cooling shaping of injection runner department product to the runner department cooling heat dissipation who penetrates the mouth front end, and the cooling heat dissipation is thermal-insulated effectual, and product injection moulding is of high quality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the water-cooling tube of the present invention.

The corresponding part names indicated by the numbers and letters in the drawings:

1. the connecting end 2, the cooling jacket 3 and the water cooling pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

With reference to fig. 1 and 2, the utility model discloses a nozzle of injection molding hot runner with cooling jacket 2, which comprises a nozzle body, a cooling jacket 2 arranged outside the nozzle body and mounted on the connecting end 1 at the tail end of the cooling jacket 2. Preferably, the cooling jacket 2 is made of copper. The cooling jacket 2 is in a cylindrical structure, and the front part of the cooling jacket 2 is gradually contracted to be in a conical structure. The front end of the cooling jacket 2 is provided with a high temperature resistant silica gel sealing ring. A water cooling tube 3 is arranged in the jacket wall of the cooling jacket 2. The water-cooling pipe 3 includes a communicating pipe portion and a heat radiation pipe portion. The heat dissipation pipe part is positioned at the front part of the cooling jacket 2 and is in S-shaped curve reciprocating circumambulation and encircles the cooling jacket 2 for a circle. The communicating pipe part comprises a water inlet pipe and a water outlet pipe; the two ends of the radiating pipe part are respectively connected with the water inlet pipe and the water outlet pipe. Specifically, the connecting end 1 is provided with a bolt hole for fixed installation; a water inlet and a water outlet are arranged on the connecting end 1; the water inlet pipe is connected with the water inlet; the water outlet pipe is connected with the water outlet.

In order to guarantee structural strength, avoid warping, do benefit to simultaneously and realize 3D and print, water-cooled tube 3 is made by steel.

In order to improve the cooling and heat insulation efficiency and increase the contact area, the radiating pipe part is of a hollow flat elliptic tubular structure. Meanwhile, the radiating pipe part is of a hollow round tubular structure, so that large water flow can be kept under small volume.

The utility model discloses an action process and principle: after the injection nozzle body is subjected to injection molding, water enters from the water inlet and flows out from the water outlet through the water inlet pipe, the heat dissipation pipe part and the water outlet pipe, so that the injection nozzle body and the external cooling heat insulation are realized, and uneven heating in the injection mold due to the heat of the injection nozzle body is avoided. The utility model discloses a cooling tube portion of water-cooled tube 3 adopts 3D to print and forms, and the radiating efficiency is high, prints the technique through introducing 3D, has realized the shape design different completely with conventional condenser tube, has promoted the thermal-insulated effect of cooling greatly.

Through the above-mentioned specific embodiment, the beneficial effects of the utility model are that: the utility model has the advantages of simple and reasonable structure, through setting up cooling jacket 2 outside penetrating the mouth originally to installation special-shaped structure's water-cooled tube 3 in cooling jacket 2 realizes avoiding influencing the cooling shaping of injection runner department product to the runner department cooling heat dissipation of penetrating the mouth front end, and the cooling heat dissipation is thermal-insulated effectual, and product injection moulding is of high quality.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The injection nozzle with the cooling sleeve on the injection molding heat runner is characterized by comprising a nozzle body, the cooling sleeve sleeved outside the nozzle body and a connecting end arranged at the tail end of the cooling sleeve; the cooling jacket is of a cylindrical structure, and the front part of the cooling jacket is gradually contracted into a conical structure; a high-temperature-resistant silica gel sealing ring is arranged at the front end of the cooling jacket; a water cooling pipe is arranged in the sleeve wall of the cooling sleeve; the water cooling pipe comprises a communicating pipe part and a radiating pipe part; the heat dissipation pipe part is positioned at the front part of the cooling jacket, and the heat dissipation pipe part winds around the cooling jacket in an S-shaped curve in a reciprocating manner for a circle; the communicating pipe part comprises a water inlet pipe and a water outlet pipe; the two ends of the radiating pipe part are respectively connected with the water inlet pipe and the water outlet pipe.

2. An injection molding hot runner nozzle with a cooling jacket as claimed in claim 1 wherein said cooling jacket is made of copper.

3. An injection molded hot runner nozzle with a cooling jacket as claimed in claim 1 wherein said water cooled tube is made of steel.

4. An injection molding hot runner nozzle with a cooling jacket as claimed in claim 2, wherein said heat sink tube portion has a hollow, flat oval tubular configuration.

5. An injection molding hot runner nozzle with a cooling jacket as claimed in claim 1, wherein said heat dissipating tube portion is of a hollow round tubular configuration.

6. The nozzle with the cooling jacket for the injection molding hot runner of claim 1, wherein the connecting end is provided with a bolt hole for fixed installation; a water inlet and a water outlet are arranged on the connecting end; the water inlet pipe is connected with the water inlet; the water outlet pipe is connected with the water outlet.