CN211968280U

CN211968280U - Split type hot nozzle and hot runner system

Info

Publication number: CN211968280U
Application number: CN202020495780.2U
Authority: CN
Inventors: 席连庆
Original assignee: Yudo Qingdao Hot Runner Systems Co ltd
Current assignee: Yudo Qingdao Hot Runner Systems Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2020-11-20
Anticipated expiration: 2030-04-08

Abstract

The utility model belongs to the technical field of the hot runner, especially, relate to a split type hot mouth and hot runner system. The method changes the mode that the prior nozzle tip is arranged in the hot nozzle body, and then the pouring gate is fixedly connected with the hot nozzle body by threads. Including the hot nozzle body, this internal hot nozzle body runner that is equipped with of hot nozzle, the tip of hot nozzle body is equipped with hot nozzle tip, hot nozzle tip includes outer nozzle tip and interior nozzle tip and constitutes, interior nozzle tip is located in the outer nozzle tip, outer nozzle tip with the tip threaded connection of hot nozzle body, be equipped with interior nozzle tip runner in the interior nozzle tip, hot nozzle body runner stretch into in the outer nozzle tip with interior nozzle tip runner intercommunication, the tip of outer nozzle tip is equipped with runner department, runner department with outer nozzle tip is to inserting the connection, be equipped with runner department runner in the runner department, runner department runner with interior nozzle tip runner intercommunication is still including locating the hot nozzle heater outside hot nozzle body and hot nozzle tip.

Description

Split type hot nozzle and hot runner system

Technical Field

The utility model belongs to the technical field of the hot runner, especially, relate to a split type hot mouth and hot runner system.

Background

The hot runner ensures that the plastic of the runner and the sprue is kept in a molten state by a heating method. Because the heating rod and the heating ring are arranged near or in the center of the runner, the whole runner from the nozzle outlet of the injection molding machine to the sprue is in a high-temperature state, so that the plastic in the runner is kept molten, the runner does not need to be opened after the machine is stopped, the solidified material is taken out, and the runner is heated to the required temperature when the machine is started again. The hot runner technology has the advantages of saving raw materials, reducing cost, shortening molding period, improving machine efficiency, improving surface quality and mechanical property of products, improving the surface attractiveness of injection molding products and the like. But with the wide application of hot runner technique, all kinds of defects appear in some high-quality plastic field also not to the same degree, open system is that the heating of plastic through flow distribution plate hot nozzle directly passes through the runner cooling of hot nozzle head portion and breaks gluey, the advantage is that structure preparation simple process, hot runner and mould cost are lower relatively, the shortcoming is that does not have the needle of needle valve formula system and seals gluey advantage, runner department is through the cooling water and runner subsection nature breaking gluey, to the good plastic of hot melt type, runner department breaks gluey easy wire drawing, can cause product or cold burden bar shape not pleasing to the eye. And the structure of the traditional open type hot nozzle is that the nozzle tip is arranged in the hot nozzle body, then the pouring gate is fixedly connected with the hot nozzle body through threads, and then the pouring gate is screwed up and reinforced through a spanner. If the runner cap front end customer has machined the cold runner, the runner cap may be removed and tightened again during subsequent reloading, and the direction of the cold runner may deviate from the position of the cold runner of the mold due to the threads. Therefore, I have developed an open split hot nozzle for these imperfections.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to solve the technical problem that a split type hot mouth is provided, the hot mouth body of packing into is pointed to the current mouth of change, then runner department and the fixed mode of threaded connection for the hot mouth body.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the utility model provides a split type hot mouth, includes the hot mouth body, this internal hot mouth body runner that is equipped with of hot mouth, the tip of hot mouth body is equipped with hot mouth tip, hot mouth tip includes outer mouth tip and interior mouth tip constitution, interior mouth tip is located in the outer mouth tip, outer mouth tip with the tip threaded connection of hot mouth body, be equipped with interior mouth tip runner in the interior mouth tip, hot mouth body runner stretch into in the outer mouth tip with interior mouth tip runner intercommunication, the tip of outer mouth tip is equipped with runner department, runner department with outer mouth tip is to inserting the connection, be equipped with runner department runner in the runner department, runner department runner with interior mouth tip runner intercommunication still includes locates hot mouth body and the hot mouth heater outside the hot mouth tip.

In the split hot nozzle, the hot nozzle body is in threaded connection with the inside of the outer nozzle tip, the end part of the hot nozzle body is provided with the hot nozzle body external thread, and the outer nozzle tip is internally provided with the outer nozzle tip internal thread matched with the hot nozzle body external thread; an outer tip matching part is arranged in the outer tip, and an inner tip matching part matched with the outer tip matching part is arranged on the inner tip; the outer nozzle tip portion is provided with an outer nozzle tip opposite insertion portion, and the top of the pouring gate department is provided with a pouring gate department opposite insertion portion matched with the outer nozzle tip opposite insertion portion.

The split type hot nozzle is characterized in that a gate department installation part is arranged below the plug-in part of the gate department, a wire drawing prevention gasket is arranged in the gate department installation part, two gasket flow passage holes are symmetrically formed in the center of the wire drawing prevention gasket in two directions, and a gasket flow division part is arranged between the gasket flow passage holes.

In the split hot nozzle, the outer wall of the pouring gate department is symmetrically provided with the anti-rotation parts, and the anti-rotation parts are symmetrical trimming planes.

In the split type hot nozzle, the outer wall of the outer nozzle tip is symmetrically provided with the outer nozzle tip spanner parts, and the two outer nozzle tip spanner parts are symmetrical trimming planes.

A hot runner system comprising at least one split hot nozzle as described in any one of the above.

The utility model discloses split type hot mouth and hot runner system's advantage is:

1. the utility model discloses split type hot mouth and hot runner system, hot mouth point adopt interior mouth point and the split type design of outer mouth point, both adopt direct assembly tolerance fit, and outer mouth point passes through screw thread and this body coupling of hot mouth, and hot mouth body is installed in outer mouth point, compress tightly interior mouth point simultaneously, and runner department is fixed and compress tightly with outer mouth point tight fit plug-in. In the original open type hot nozzle large water gap structure, because the matching surface of the gate driver and the hot nozzle body is large, the heat conduction is easy, the long equal-capacity easy-to-draw wires are arranged on the material handle, and the gate driver is in threaded connection with the hot nozzle body, if a cold runner processed on the gate driver after the gate driver is disassembled and reassembled is detached, the offset error is easy to occur. The novel sprue bushing has small contact surface with the hot nozzle, and the sprue is cooled quickly and is not easy to draw wires.

2. The split type hot nozzle and hot runner system of the utility model has the advantages that the diameter of the hot nozzle is integrally reduced due to the structural design, the occupied mould space is reduced, and the market of the small mould of the precision mould is increased; the sprue bush is in plug-in connection with the outer nozzle tip, so that the matching surface of the sprue bush and the hot nozzle body is reduced, heat conduction is reduced, and the glue-breaking position of the sprue bush is cooled more quickly, so that wire drawing is reduced, and the quality of a plastic part product is improved; the sprue bush and the outer nozzle tip are in plug-in connection and can rotate, and the situation of flow channel deviation can not occur after the sprue bush and the outer nozzle tip are disassembled and assembled again; the sprue bush is not in direct contact with the hot nozzle heater any more, the contact surface is small, and the heat conduction is less.

3. The utility model discloses split type hot mouth and hot runner system, runner department adopt the design of novel split type runner department to prevent drawing wire, install in runner department and prevent the drawing wire gasket, prevent that the drawing wire gasket is equipped with the gasket reposition of redundant personnel portion that comes to shunt the plastic, the sizing material after the reposition of redundant personnel flows to the runner department runner by gasket runner hole, can play the effect of preventing the drawing wire well; the edge-cutting anti-rotation part is added on the gate driver, so that the problem that the conventional gate driver is in threaded connection with the hot nozzle, and after disassembly and reassembly, a cold runner machined on the gate driver is not corresponding to a cold runner of a mold, so that deviation occurs is solved; the nozzle tip and the sprue bush are subjected to multi-step precision processing such as numerical control turning, linear cutting, numerical control washing and cutting and the like, so that the nozzle tip and the sprue bush are ensured to be tightly matched, no glue leakage, no glue accumulation and no wire drawing are caused, and a perfect hot runner system and an injection molding scheme are provided for customers.

Drawings

FIG. 1 is a schematic view of the assembly structure of the split hot nozzle of the present invention;

FIG. 2 is a schematic view of the split hot nozzle of the present invention;

FIG. 3 is a schematic structural view of the anti-wiredrawing gasket of the split hot nozzle of the present invention;

FIG. 4 is a schematic structural view of a gate driver of the split hot nozzle of the present invention;

fig. 5 is a schematic structural view of the hot runner system of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Embodiment 1, as shown in fig. 1 and 2, a split type hot nozzle includes a hot nozzle body 1, a hot nozzle body flow passage 11 is provided in the hot nozzle body 1, the end part of the hot nozzle body 1 is provided with a hot nozzle tip which comprises an outer nozzle tip 3 and an inner nozzle tip 4, the inner nozzle tip 4 is arranged in the outer nozzle tip 3, the outer nozzle tip 3 is in threaded connection with the end part of the hot nozzle body 1, an inner nozzle tip flow passage 41 is arranged in the inner nozzle tip 4, the hot nozzle body flow passage 11 extends into the outer nozzle tip 3 and is communicated with the inner nozzle tip flow passage 41, the end part of the outer nozzle tip 3 is provided with a gate driver 5, the gate driver 5 is connected with the outer nozzle tip 3 in an opposite insertion way, a sprue runner channel 51 is arranged in the sprue runner 5, the sprue runner channel 51 is communicated with the inner nozzle tip channel 41, and the hot nozzle comprises a hot nozzle body 1 and a hot nozzle heater 2 arranged outside the hot nozzle tip.

Embodiment 2, on the basis of embodiment 1, as shown in fig. 1 and 2, the hot nozzle body 1 is screwed into the outer nozzle tip 3, an external hot nozzle body thread 12 is arranged at an end of the hot nozzle body 1, and an inner outer nozzle tip thread 31 matched with the external hot nozzle body thread 12 is arranged in the outer nozzle tip 3; an outer tip matching part 32 is arranged in the outer tip 3, and an inner tip matching part 42 matched with the outer tip matching part 32 is arranged in the inner tip 4; the end part of the outer nozzle tip 3 is provided with an outer nozzle tip opposite insertion part 33, and the top of the pouring gate department 5 is provided with a pouring gate department opposite insertion part 52 matched with the outer nozzle tip opposite insertion part 33.

Embodiment 3, on the basis of embodiment 2, as shown in fig. 1, 2, and 3, the gate department 5 is located below the gate department opposite insertion portion 52, the gate department installation portion 53 is provided with the anti-wire-drawing gasket 6, two gasket flow passage holes 61 are symmetrically arranged on two sides of the center of the anti-wire-drawing gasket 6, and a gasket shunt portion 62 is arranged between the two gasket flow passage holes 61.

In example 4, in addition to example 1, as shown in fig. 1, 2 and 4, the outer wall of the gate driver 5 is symmetrically provided with rotation preventing portions 54, and the two rotation preventing portions 54 are symmetrical trimming planes.

In embodiment 5, based on embodiment 1, as shown in fig. 1 and 2, outer tip wrench parts 34 are symmetrically arranged on the outer wall of the outer tip 3, and two outer tip wrench parts 34 are symmetrical trimming planes.

Embodiment 6, as shown in fig. 5, a hot-runner system comprising at least one split hot nozzle as described in any one of embodiments 1 to 5.

When the split type hot nozzle is installed, firstly, a hot nozzle flange 7 is installed on a hot nozzle body 1, then an inner nozzle tip 4 is installed in an outer nozzle tip 3, and strict tolerance matching is required; secondly, connecting the external nozzle tip internal thread 31 of the external nozzle tip 3 with the hot nozzle body external thread 12 of the hot nozzle body 1, wherein the two sides of the external nozzle tip 3 are symmetrical to obtain an external nozzle tip wrench part 34 which can be screwed by using a tool wrench, and then installing the hot nozzle heater 2; thirdly, the anti-wiredrawing gasket 6 is arranged in the sprue department installation part 53 of the sprue department 5, the diameter and the height need to be in close tolerance fit, and the glue hiding caused by gaps is prevented; and fourthly, the pouring gate driver 5 and the outer nozzle tip 3 are connected in an inserted mode, the pouring gate driver and the outer nozzle tip are fixedly pressed through tight surface matching, and the whole split type hot nozzle is installed.

When the split type hot nozzle is applied to a hot runner system, as shown in fig. 5, injection molding glue is connected with the hot runner system through a locating ring 8, the glue is injected into an injection nozzle body 11 through matching of an SR circular arc 10 on a ball head of an injection molding machine and an injection nozzle head 9, then the injection molding is carried out through an injection nozzle body runner 12 in a splitter plate 13, the glue is poured into a hot nozzle body runner 11 of a hot nozzle body 1 through a splitter plate runner 14 from the splitter plate 13, then the glue sequentially passes through the hot nozzle body 1, an inner nozzle tip 4, a wire drawing prevention gasket 6 and a pouring gate driver 5, the glue is poured into a mold cavity, the diameter of the front end of the pouring gate driver 5 is matched with the mold cavity through a tolerance surface, the plastic material is injected at the front end of the mold cooling water, and the glue is broken at the pouring gate.

The present invention has been described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments. The present invention can be modified or modified by those skilled in the art without departing from the technical idea of the present invention, and such modifications or modifications naturally fall within the scope of the present invention.

Claims

1. A split type hot nozzle is characterized in that: comprises a hot nozzle body (1), a hot nozzle body runner (11) is arranged in the hot nozzle body (1), a hot nozzle tip is arranged at the end part of the hot nozzle body (1), the hot nozzle tip comprises an outer nozzle tip (3) and an inner nozzle tip (4), the inner nozzle tip (4) is arranged in the outer nozzle tip (3), the outer nozzle tip (3) is in threaded connection with the end part of the hot nozzle body (1), an inner nozzle tip runner (41) is arranged in the inner nozzle tip (4), the hot nozzle body runner (11) extends into the outer nozzle tip (3) to be communicated with the inner nozzle tip runner (41), a sprue bush (5) is arranged at the end part of the outer nozzle tip (3), the sprue bush (5) is in opposite insertion connection with the outer nozzle tip (3), a sprue bush runner (51) is arranged in the sprue bush (5), and the sprue bush runner (51) is communicated with the inner nozzle tip runner (41), the hot nozzle heating device also comprises a hot nozzle heater (2) arranged outside the hot nozzle body (1) and the hot nozzle tip.

2. The split hot nozzle of claim 1, characterized in that: the hot nozzle body (1) is in threaded connection with the inner part of the outer nozzle tip (3), the end part of the hot nozzle body (1) is provided with a hot nozzle body external thread (12), and an outer nozzle tip internal thread (31) matched with the hot nozzle body external thread (12) is arranged in the outer nozzle tip (3); an outer tip matching part (32) is arranged in the outer tip (3), and an inner tip matching part (42) matched with the outer tip matching part (32) is arranged on the inner tip (4); the end part of the outer nozzle tip (3) is provided with an outer nozzle tip opposite insertion part (33), and the top of the pouring gate department (5) is provided with a pouring gate department opposite insertion part (52) matched with the outer nozzle tip opposite insertion part (33).

3. The split hot nozzle of claim 2, characterized in that: lie in runner department (5) runner department is equipped with runner department installation department (53) to inserting portion (52) below, be equipped with in runner department installation department (53) and prevent wire drawing gasket (6), prevent that wire drawing gasket (6) center department bilateral symmetry is equipped with gasket flow passage hole (61), two be gasket reposition of redundant personnel portion (62) between gasket flow passage hole (61).

4. The split hot nozzle of claim 1, characterized in that: the outer wall of the sprue bush (5) is symmetrically provided with anti-rotation parts (54), and the two anti-rotation parts (54) are symmetrical trimming planes.

5. The split hot nozzle of claim 1, characterized in that: outer nozzle tip wrench parts (34) are symmetrically arranged on the outer wall of the outer nozzle tip (3), and two outer nozzle tip wrench parts (34) are symmetrical trimming planes.

6. A hot-runner system, comprising: the hot runner system includes at least one split hot nozzle as claimed in any one of claims 1 to 5.