CN211031052U

CN211031052U - Hot runner system

Info

Publication number: CN211031052U
Application number: CN201921909642.8U
Authority: CN
Inventors: 蒋林才
Original assignee: Suzhou Jab Alwayseal Technology Ltd
Current assignee: Suzhou Jab Alwayseal Technology Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-07-17
Anticipated expiration: 2029-11-07

Abstract

The utility model provides a hot runner system, including flow distribution plate body and a plurality of nozzle, the flow distribution plate body includes runner and heating tube subassembly, the runner includes a feed inlet and a plurality of discharge gate, feed inlet and a plurality of discharge gate are located the relative both sides of flow distribution plate body respectively, a plurality of feed inlets divide into the first discharge gate group and the second discharge gate group of non-coincidence, first discharge gate group and second discharge gate group are located the both ends of flow distribution plate body respectively, the heating tube subassembly includes first heating tube and second heating tube, first heating tube surrounds first discharge gate group, the second heating tube surrounds second discharge gate group, a plurality of nozzles are connected with a plurality of discharge gate one-to-ones.

Description

Hot runner system

Technical Field

The utility model relates to a hot runner technical field especially relates to a hot runner system.

Background

The hot runner technology is an injection molding mode which keeps a high-temperature state of a runner all the time, so that a material flowing through the runner is always kept in a molten state in a circulation process. Compared with the traditional three-plate mold, the hot runner technology has the advantages of saving raw materials, shortening the molding period and the like.

In the hot runner system, the flow distribution plate is one of the most core components, because the heating tube assembly and the flow channel are arranged on the flow distribution plate, namely when the heating tube assembly generates heat, the heat of the heating tube assembly can be transmitted to the flow channel through the flow distribution plate, thereby playing the effect of heating the flow channel. However, in the existing hot runner system, plastics are not easily plasticized at high temperature, which affects the normal operation of the subsequent injection molding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the existing hot runner system in the prior art is difficult to plasticize plastic under the high temperature condition, and providing a hot runner system.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a hot runner system, including flow distribution plate body and a plurality of nozzle, the flow distribution plate body includes runner and heating tube subassembly, the runner includes a feed inlet and a plurality of discharge gate, feed inlet and a plurality of discharge gate are located the relative both sides of flow distribution plate body respectively, a plurality of feed inlets divide into first discharge gate group and the second discharge gate group of non-overlapping, first discharge gate group and second discharge gate group are located the both ends of flow distribution plate body respectively, the heating tube subassembly includes first heating tube and second heating tube, first heating tube surrounds first discharge gate group, the second heating tube surrounds second discharge gate group, a plurality of nozzles are connected with a plurality of discharge gate one-to-one.

Preferably, the feed inlet is located at the center of the plurality of discharge outlets, and the distances between the feed inlet and the flow passages between the plurality of discharge outlets are equal.

Preferably, the nozzle includes a core runner and a gate, the core runner is connected to the gate, the core runner has a gradually decreasing cross-sectional area from the end far away from the gate to the end connected to the gate, and the gate has a gradually increasing cross-sectional area from the end connected to the core runner to the end far away from the core runner. Furthermore, the nozzle core flow passage comprises a stable section and a reduced section, the end part of the stable section connected with the reduced section is of a curved surface structure, the reduced section is connected with the gate, and the sectional area of the reduced section is gradually reduced from one end far away from the gate to one end connected with the gate. Furthermore, the opening angle of the reduced section is 100-120 °.

Preferably, the first heating tube and the second heating tube are embedded in the flow distribution plate body.

Preferably, the number of the discharge ports is 4, and the discharge ports are distributed in an X shape. Further, the quantity of the discharge ports of the first discharge port group is equal to the quantity of the discharge ports of the second discharge port group.

Preferably, the discharge port is provided with a support pad, and the nozzle is assembled in the support pad.

Compared with the prior art, the beneficial effects of the utility model are that: the plastic in the runner is divided into a plurality of small parts by the design of one feed inlet and a plurality of discharge outlets of the runner on the flow distribution plate body, so that each small part of plastic can be conveniently heated; through the design that first heating tube and second heating tube surround first discharge gate group and second discharge gate group respectively for the plastics heating in the runner is more abundant and even on the flow distribution plate body, thereby makes plastics plastify more easily, has guaranteed injection moulding's quality.

Drawings

Fig. 1 is a schematic structural diagram of a hot runner system according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;

fig. 3 is a schematic diagram of the method at B in fig. 2.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Please refer to fig. 1 to fig. 3 in combination, the utility model discloses a hot runner system, including flow distribution plate body 1 and a plurality of nozzle 2, flow distribution plate body 1 includes runner 11 and heating tube assembly 12, runner 11 includes a feed inlet 111 and a plurality of discharge gate 112, feed inlet 111 and a plurality of discharge gate 112 are located flow distribution plate body 1's relative both sides respectively, a plurality of discharge gate 112 divide into first discharge gate group 31 and second discharge gate group 32 of non-coincidence, first discharge gate group 31 and second discharge gate group 32 are located flow distribution plate body 1's both ends respectively, heating tube assembly 12 includes first heating tube 121 and second heating tube 122, first heating tube 121 surrounds first discharge gate group 31, second heating tube 122 surrounds second discharge gate group 32, a plurality of nozzles 2 are connected with a plurality of discharge gate 112 one-to-ones.

Preferably, the feeding port 111 is located at the center of the plurality of feeding ports 112, and the distances between the feeding port 111 and the plurality of discharging ports 112 are all equal, so that the plastic can flow to the plurality of discharging ports 112 at the same time, and the balance of filling the flow channels and the uniform heating of the plastic are ensured.

Preferably, the nozzle 2 includes a nozzle core runner 21 and a gate 22, the nozzle core runner 21 is connected to the gate 22, the sectional area of the nozzle core runner 21 decreases gradually from an end far away from the gate 22 to an end connected to the gate 22, and the sectional area of the gate 22 increases gradually from an end connected to the nozzle core runner 21 to an end far away from the nozzle core runner 21, so as to improve the ejection rate of the plastic and ensure the plasticizing effect of the plastic.

Preferably, the first heating tube 121 and the second heating tube 122 are embedded in the flow distribution plate body 1 to protect the heating tubes and ensure the heating effect.

Preferably, the number of the discharge holes 112 is 4, and the discharge holes are distributed in an "X" shape. Further, the number of the discharge ports of the first discharge port group 31 is equal to the number of the discharge ports of the second discharge port group 32, and the number of the discharge ports is 2, so that the plastic is uniformly heated.

Preferably, the discharge opening 112 is provided with a support seat 4, and the nozzle 2 is assembled in the support seat 4, so that the position of the nozzle 2 is fixed, thereby avoiding the deviation of the nozzle 2 caused by the impact force of the plastic flowing into the nozzle 2 to the nozzle 2.

In practical use, the hot runner system is used for producing the die for the products of air conditioners and refrigerator compressors by using PBT + GF40% plastic, can effectively solve the problem that the plastic is not easy to plasticize at high temperature, and improves the quality of the products.

The utility model discloses a hot runner system, which divides the plastic in the runner into a plurality of small parts through the design of one feed inlet and a plurality of discharge outlets of the runner on the splitter plate body, thereby being convenient for heating each small part of plastic; through the design that first heating tube and second heating tube surround first discharge gate group and second discharge gate group respectively for the plastics heating in the runner is more abundant and even on the flow distribution plate body, thereby makes plastics plastify more easily, has guaranteed injection moulding's quality.

The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.

Claims

1. The utility model provides a hot runner system, a serial communication port, includes flow distribution plate body and a plurality of nozzle, the flow distribution plate body includes runner and heating tube subassembly, the runner includes a feed inlet and a plurality of discharge gate, feed inlet and a plurality of discharge gate are located respectively the relative both sides of flow distribution plate body, a plurality of discharge gates divide into first discharge gate group and the second discharge gate group of non-overlapping, first discharge gate group with second discharge gate group is located respectively the both ends of flow distribution plate body, the heating tube subassembly includes first heating tube and second heating tube, first heating tube surrounds first discharge gate group, the second heating tube surrounds second discharge gate group, and a plurality of nozzles are connected with a plurality of discharge gate one-to-one.

2. The hot-runner system of claim 1, wherein the inlet is located at a center of the plurality of outlets, and the distances between the inlet and the plurality of outlets are equal.

3. The hot-runner system of claim 1, wherein the nozzle comprises a core runner and a gate, the core runner being coupled to the gate, the core runner having a cross-sectional area that decreases from an end distal from the gate to an end coupled to the gate, and the gate having a cross-sectional area that increases from an end coupled to the core runner to an end distal from the core runner.

4. The hot-runner system as claimed in claim 3 wherein the nozzle core channel comprises a stationary portion and a reduced portion, the end of the stationary portion connected to the reduced portion is a curved surface, the reduced portion is connected to the gate, and the cross-sectional area of the reduced portion decreases from the end away from the gate to the end connected to the gate.

5. The hot-runner system as claimed in claim 4 wherein the opening angle of the reduced section is 100-120 °.

6. The hot-runner system of claim 1, wherein the first heat-generating tube and the second heat-generating tube are embedded within the manifold body.

7. The hot-runner system of claim 1, wherein the number of outlets is 4 and is "X" shaped.

8. The hot-runner system of claim 7, wherein the number of ports of the first port set is equal to the number of ports of the second port set.

9. The hot-runner system of claim 1, wherein the discharge port is provided with a support pad, and the nozzle is fitted into the support pad.