CN217573891U

CN217573891U - Needle valve hot nozzle for high-temperature material

Info

Publication number: CN217573891U
Application number: CN202221013824.9U
Authority: CN
Inventors: 董鹏鹏
Original assignee: Youlipu Injection Molding Technology Kunshan Co ltd
Current assignee: Youlipu Injection Molding Technology Kunshan Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-10-14
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a needle valve heat is chewed for high temperature material, including chewing body, heater, chewing core, needle and thermal-insulated cap, the heater cup joints on one's body chewing, it sets up to the cavity structure to chew the body, and the cavity embeds there is core and the needle of chewing, the needle is located and chews the in-core, the thermal-insulated cap setting is chewing core tip, be provided with the backward flow groove on the needle, it also sets up to the cavity structure to chew the core. The utility model provides a needle valve hot nozzle for high temperature material, the needle valve is provided with a backflow groove structure, thereby ensuring that the shearing force of the sizing material at the position is increased while the backflow of the sizing amount is ensured, and ensuring the temperature of the sizing material at the sprue; the gate of the valve needle is designed into a straight-through hole, so that the design and processing of a mold are facilitated, the strength of the gate of the mold core is ensured, and the abrasion of the gate is reduced; the utility model is used for when the fine of engineering supplied materials increase glass, the yield of guaranteeing the product reduces the number of times of changing accessories simultaneously, therefore reaches the reduction mould cost.

Description

Needle valve hot nozzle for high-temperature material

Technical Field

The utility model relates to a technical field is chewed to the heat, specifically is a needle valve heat is chewed for high temperature material.

Background

Hot runner nozzles are end parts of hot runner systems that deliver plastic melt delivered from a manifold to a mold cavity for injection molding into a product. Most importantly, the temperature of the front end of the hot nozzle determines whether a cold material exists at a glue opening, and the hardness of many plastic products has high requirements at present, so that the use of engineering materials and high glass fibers is a trend, the requirements on the hot runner are higher and higher, and particularly the design requirement on the hot nozzle of the hot runner is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a needle valve heat is chewed for high temperature material to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a needle valve heat is chewed for high temperature material, is including chewing body, heater, chewing core, needle and thermal-insulated cap, the heater cup joints on chewing the body, chew the body and set up to the cavity structure, and the cavity embeds there is core and the needle of chewing, the needle is located and chews the core, the thermal-insulated cap setting is chewing core tip, be provided with the backwash tank on the needle, it also sets up to the cavity structure to chew the core.

As further optimization, the cavity of the chewing core is V-shaped, the inner diameter of the cavity close to the sprue is small, the flowing of rubber can be slowed down, the flowing of the rubber is smoother, and therefore the rubber enters a product through the sprue.

As further optimization, the cavity of the mouth body is designed into a step hole shape, so that the mouth core and the mouth core sleeve are convenient to assemble, meanwhile, the mouth core and the mouth body are coaxial through empty positioning, and the end part of the mouth core is abutted against the step of the cavity of the mouth body.

As further optimization, the detachable core cover of chewing that is provided with between the body of chewing and the core of chewing for the body is chewed in the location fixed, because chew the core cover and dismantle conveniently, make to chew the core and change more convenient.

As further optimization, the sprue at the lower end of the nozzle core is a straight through hole, and compared with a complex sprue structure, the straight through hole structure is convenient to design and process, the strength of the sprue of the mold core is ensured, and the abrasion of the sprue is reduced.

As further optimization, the nozzle core is made of wear-resistant material tungsten steel, the temperature of the molten flowing colloid in the nozzle core is high, the wear on the inner wall of the nozzle core is large, the tungsten steel material is high-temperature resistant and wear-resistant, the working state is stable under the working condition of high temperature and high wear, and the service life of the nozzle core can be prolonged.

The heat insulation cap is further optimized to be made of heat insulation material polyimide, the polyimide has high temperature resistance of more than 400 ℃, long-term use temperature range of-200-300 ℃, no obvious melting point on part, high insulation performance, good heat insulation effect and protection of external equipment and products.

Advantageous effects

The utility model provides a needle valve hot nozzle for high temperature material, the needle valve is provided with a backflow groove structure, thereby ensuring that the shearing force of the sizing material at the position is increased while the backflow of the sizing amount is ensured, and ensuring the temperature of the sizing material at the sprue; the gate of the valve needle is designed into a straight-through hole, so that the design and processing of a mold are facilitated, the strength of the gate of the mold core is ensured, and the abrasion of the gate is reduced; the utility model is used for when the fine of engineering supplied materials increase glass, the yield of guaranteeing the product reduces the number of times of changing accessories simultaneously, therefore reaches reduction mould cost.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is a schematic front structural view of the heater of the present invention;

fig. 3 is a schematic view of the front and side structures of the valve needle of the present invention.

Reference numerals

The nozzle comprises a nozzle body 1, a heater 2, a nozzle core 3, a valve needle 4, a heat insulation cap 5 and a nozzle core sleeve 6.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-3, a needle valve hot nozzle for high temperature materials, including a nozzle body 1, a heater 2, a nozzle core 3, a valve needle 4 and a heat insulation cap 5, the heater 2 is sleeved on the nozzle body 1, the nozzle body 1 is set to a cavity structure, and the nozzle core 3 and the valve needle 4 are arranged in the cavity, the valve needle 4 is located in the nozzle core 3, the heat insulation cap 5 is arranged at the end of the nozzle core 3, a backflow groove is arranged on the valve needle 4, so that the shearing force of the sizing material is increased while the glue amount is backflow, and the temperature of the sizing material at the sprue is also ensured, the nozzle core 3 is set to a cavity structure, the cavity of the nozzle core 3 is set to a V shape, and the inner diameter close to the sprue is small, so that the flow of the sizing material can be slowed down, and the sizing material can enter the product through the sprue, the cavity of the nozzle body 1 is set to be a stepped hole shape, the end of the nozzle core 3 is abutted against the step of the cavity of the nozzle body 1, so as to play a role of positioning and fixing, a nozzle core sleeve 6 is detachably arranged between the nozzle body 1 and the nozzle core 3, because the cavity has small hole and high requirements for strength and high processing difficulty of the sprue core, and the sprue core insert is convenient for processing, and the straight-through design; chew core 3 and adopt wear-resistant material tungsten steel to make, wear-resistant material that heat conductivility is good guarantees that the heat of chewing core 3 can the transmission part give valve needle 4, guarantees valve needle 4's temperature for the colloid keeps good mobility, and thermal-insulated cap 5 adopts thermal insulation material polyimide to make, and polyimide is high temperature resistant, has good heat-proof effect, plays thermal-insulated heat preservation effect, and equipment and product around the protection heat is chewed because of overheated damage.

The working principle is as follows: when the rubber material chewing machine is used, rubber material enters the nozzle body through the last part, the heater heats the rubber material to keep the flowability of the rubber material to pass through the nozzle core, and the structure on the upper part of the nozzle core is arranged to form a certain angle to slow down the flowing of the rubber material, so that the flowing of the rubber material is smoother, and the rubber material enters a product through the sprue.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a needle valve heat is chewed for high temperature material, is including chewing body (1), heater (2), chewing core (3), needle (4) and thermal-insulated cap (5), heater (2) cup joint on chewing body (1), it sets up to the cavity structure to chew body (1), and the cavity embeds there is core (3) and needle (4) of chewing, needle (4) are located and chew in core (3), thermal-insulated cap (5) set up and chewing core (3) tip, its characterized in that: the valve needle (4) is provided with a backflow groove, and the mouth core (3) is also provided with a cavity structure.

2. The needle valve heat nozzle for the high-temperature material as claimed in claim 1, wherein: the cavity of the mouth core (3) is V-shaped, and the inner diameter close to the sprue is small.

3. The needle valve heat nozzle for the high-temperature material as claimed in claim 1, wherein: the cavity of the mouth body (1) is designed to be a step hole shape, and the end part of the mouth core (3) is abutted against the step of the cavity of the mouth body (1).

4. The needle valve heat nozzle for the high-temperature material as claimed in claim 1, wherein: a chewing core sleeve (6) is detachably arranged between the chewing body (1) and the chewing core (3).

5. The needle valve heat nozzle for the high-temperature material as claimed in claim 4, wherein: the sprue at the lower end of the nozzle core (3) is a straight-through hole.

6. The needle valve heat nozzle for the high-temperature material as claimed in claim 4, wherein: the mouth core (3) is made of wear-resistant material tungsten steel.

7. The needle valve heat nozzle for the high-temperature material as claimed in claim 4, wherein: the heat insulation cap (5) is made of heat insulation material polyimide.