CN215619594U - Injection molding machine nozzle and injection molding machine - Google Patents

Abstract

The utility model discloses a nozzle of an injection molding machine, which comprises a connecting part, a nozzle body, an adjusting device, a spring and a blocking part, wherein the connecting part is arranged on the nozzle body; the connecting portion is connected to one end of the nozzle body and configured to connect with an injection molding machine barrel; the adjusting device, the spring and the blocking part are arranged on the nozzle body; the spring is positioned between the adjusting device and the blocking part; the adjustment device and the blocking portion are configured to exert a pre-force on the spring; the position of the adjustment device on the nozzle body is adjustable; the nozzle is configured to open when the spring is compressed and to close when the spring is reset. Also discloses an injection molding machine of the nozzle. The utility model can adjust the prestress of the spring of the nozzle to adapt to different machine types and rubber materials, thereby more effectively preventing the occurrence of rubber flow.

Description

Injection molding machine nozzle and injection molding machine

Technical Field

The utility model relates to the technical field of injection molding machines, in particular to a nozzle of an injection molding machine and an injection molding machine using the nozzle of the injection molding machine.

Background

An injection molding machine is a main molding device for making thermoplastic plastics or thermosetting plastics into plastic products with various shapes by using a plastic molding die. Depending on the material used in the product, the injection molding machine will usually use different rubber compounds for the injection molding raw material. The compound becomes fluid when melted. Because different compounds have different physicochemical properties, they exhibit different viscosities when melted into a fluid. To prevent the gummosis phenomenon, the nozzle needs to lock the fluid. The common spring nozzle generates a non-return function through elasticity to prevent the glue flowing phenomenon. However, when different injection molding machines and different sizing materials are faced, the required injection molding pressures are different, and the rubber flowing phenomenon still occurs because the elasticity of the spring cannot be adjusted, namely the existing spring nozzle cannot adjust the flow stopping force along with the difference of the injection molding machines and the sizing materials, so that the quality of injection molding products is not high, and the production cost is increased.

Therefore, the technical personnel in the field are dedicated to develop a nozzle of an injection molding machine, which can adjust the non-return force according to different rubber materials, better prevent the rubber flowing phenomenon, improve the product quality and reduce the production cost.

SUMMERY OF THE UTILITY MODEL

In order to achieve the aim, the utility model provides a nozzle of an injection molding machine, which comprises a connecting part, a nozzle body, an adjusting device, a spring and a blocking part, wherein the connecting part is connected with the nozzle body; the connecting portion is connected to one end of the nozzle body and configured to connect with an injection molding machine barrel; the adjusting device, the spring and the blocking part are arranged on the nozzle body; the spring is positioned between the adjusting device and the blocking part; the adjustment device and the blocking portion are configured to exert a pre-force on the spring; the position of the adjustment device on the nozzle body is adjustable; the nozzle is configured to open when the spring is compressed and to close when the spring is reset.

Further, the outer surface of the nozzle body is provided with an external thread, and the adjusting device is an annular component meshed with the external thread.

Further, the adjusting means includes a hexagonal nut engaged with the external thread and a washer located between the hexagonal nut and the spring.

Further, the connecting portion includes a threaded portion configured to connect with an injection molding machine barrel and a flange at an end of the threaded portion.

Further, the blocking portion is an annular member that engages with the external thread.

Further, the blocking portion is fixed to the nozzle body.

Further, the blocking part is a boss arranged on the nozzle body, and the diameter of the boss is larger than the inner diameter of the spring.

Further, the spring is a belleville spring.

Further, the spring is a coil spring.

Further, this internal thimble seat, the material thimble of sealing that is equipped with of nozzle and be equipped with the discharge gate in the tip, the material thimble that seals slides and sets up in the thimble seat, material thimble one end and discharge gate matched with control seal material, the other end of material thimble is equipped with the stop part.

The utility model also provides an injection molding machine, which comprises the injection molding machine nozzle.

The injection molding machine nozzle provided by the utility model has the following technical effects: through adjusting device, can adjust the prestressing force of applying on the spring to match different models and different sizing materials, adapt to different injection pressure demands, can compress the spring effectively, open the nozzle, and the spring has better non-return effect under the prestressing force effect, effectively prevents the emergence of flowing glue.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of the injection molding machine nozzle of the present invention;

fig. 2 is a cross-sectional view of a preferred embodiment of the injection molding machine nozzle of the present invention.

The nozzle comprises a nozzle body, a nozzle, a connecting part, a threaded part, a flange, a nozzle body, a male thread, a boss, a discharge hole, a regulating device, a hexagonal nut, a gasket, a spring, a sealing ejector pin, a needle seat and a blocking part, wherein the nozzle body comprises 100 parts, 10 parts, 11 parts, a threaded part, 12 parts, 20 parts, the male thread is 21 parts, the boss is 22 parts, the discharge hole is 23 parts, the regulating device is 30 parts, the hexagonal nut is 31 parts, the gasket is 32 parts, the spring is 40 parts, the sealing ejector pin is 42 parts, the needle seat is 43 parts, and the blocking part is 50 parts.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Some exemplary embodiments of the utility model have been described for illustrative purposes, and it is to be understood that the utility model may be practiced otherwise than as specifically described.

The spring nozzle has a one-way non-return function, and comprises the following specific components: in the injection molding process of the injection molding machine, the spring is compressed under the action of injection molding pressure of the spring nozzle, so that the nozzle is opened, and the rubber material is injected into a mold from the nozzle; when the injection molding is finished, the injection molding pressure disappears, and the spring returns to the original position under the action of the elastic force, so that the nozzle is closed, and the purpose of preventing glue flowing is achieved. The spring nozzles of the prior art use springs whose pre-load is constant (pre-load may be the elastic pressure generated when the spring is in a compressed state), and the spring is compressed only when the injection pressure is greater than the pre-load. However, different machines have different injection pressures, and when different rubber materials are used, the required injection pressure is different due to the different viscosity of the melted rubber materials, and the use of the spring nozzle with constant pre-stress may result in the injection pressure being less than the pre-stress, and the spring cannot be compressed to open the nozzle; if the prestress is reduced, the non-return effect is poor, and the purpose of preventing glue flowing cannot be achieved.

The injection molding machine nozzle provided by the utility model is improved on the basis of the existing spring nozzle, so that the prestress of the spring can be adjusted to match different machine types and different sizing materials, the balance between injection molding pressure and prestress is achieved, the spring can be effectively compressed, the nozzle is opened, and the spring has a better non-return effect under the prestress action.

As shown in fig. 1, the present invention provides a nozzle 100 of an injection molding machine, which includes a connecting portion 10, a nozzle body 20, an adjusting device 30, a spring 40, and a blocking portion 50. The nozzle body 20 comprises a discharge port 23, and the internal structure of the nozzle body 20 can be the structure of any spring nozzle in the prior art, and has a non-return function under the action of a spring. The specific form of the structure is not to be construed as limiting the utility model.

A connection 10 is provided at the end of the nozzle body 20 opposite the discharge port 23 for connecting the nozzle 100 to an injection molding machine cartridge. In some embodiments, the connecting portion 10 includes a threaded portion 11 and a flange 12, the threaded portion 11 being screwed into a corresponding mounting location of the injection molding machine, the flange 12 being located at an end of the threaded portion 11. It should be understood that other attachment structures capable of attaching the nozzle 100 to an injection molding machine may be equally suitable for use in the present invention.

The adjusting device 30 and the spring 40 are sleeved at the middle position of the nozzle body 20, the spring 40 is positioned between the adjusting device 30 and the blocking part 50, and under the action of the adjusting device 30 and the blocking part 50, a pre-force is exerted on the spring 40. Wherein the position of the adjusting means 30 on the nozzle body 20 is adjustable, by positioning the adjusting means 30 at different positions on the nozzle body 20, different pre-forces can be applied to the spring 40, thereby achieving an adjusting pre-load.

In some embodiments, the adjusting device 30 and the spring 40 are provided with an external thread 21 at the position of the nozzle body 20, the adjusting device 30 is a ring-shaped part sleeved on the external thread 21, the ring-shaped part is meshed with the external thread 21, and the position of the ring-shaped part on the nozzle body 20 can be changed by rotating the ring-shaped part, so as to achieve the effect of adjusting the pre-load force.

In some embodiments, the adjustment device 30 includes a hex nut 31 that engages the external threads 21 of the nozzle body 20 and a washer 32, the washer 32 being located between the spring 40 and the hex nut 31. The washer 32 may have a larger diameter than the hexagonal nut 31. The pre-load adjusting function is achieved by adjusting the position of the hexagon nut 31.

In some embodiments, the stop 50 may be a ring-shaped member that is fitted over the external thread 21 and engages with the external thread 21, and the adjustment of the preload may also be achieved by adjusting the position of the stop 50. In some embodiments, the barrier 50 is a component that is fixedly connected to the nozzle body 20. In some embodiments, a boss 22 may be provided on the nozzle body 20 near the external thread 21, the boss 22 having a diameter greater than the inner diameter of the spring 40, thereby functioning as a stopper.

The spring 40 may be selected from any one of a coil spring, a belleville spring, or other resilient member.

In some embodiments, the blocking portion 50 may be a pin, the nozzle body is provided with an ejector pin seat 43, a sealing material ejector pin 42, and a discharge hole 23 at an end portion, the sealing material ejector pin 42 is slidably disposed in the ejector pin seat 43, one end of the sealing material ejector pin 42 is matched with the discharge hole 23 to control discharging, and the other end of the sealing material ejector pin 42 is provided with the blocking portion 50. The blocking portion 50 pushes down the sealing thimble 42 under the pressure of the spring, so that a pre-tightening force is generated between the sealing thimble 42 and the discharge hole 23, thereby controlling the flow rate of the discharged material. Simultaneously, the quantity of spring can set up a plurality ofly, and preferred, the spring is the belleville spring, can adopt a plurality of belleville spring stacks to exert pressure to the stop part for seal material thimble 42 produces the pretightning force, through this kind of mode, makes the accommodation of sizing material can be wider, also does benefit to daily production and adjusts, has improved the satisfaction of customer to the product by a wide margin.

The utility model also provides an injection molding machine, which comprises the injection molding machine nozzle 100. The injection molding machine can be a horizontal injection molding machine or a vertical injection molding machine.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. A nozzle of an injection molding machine is characterized by comprising a connecting part, a nozzle body, an adjusting device, at least one spring and a blocking part; the connecting portion is connected to one end of the nozzle body and configured to connect with an injection molding machine barrel; the adjusting device, the spring and the blocking part are arranged on the nozzle body; the spring is positioned between the adjusting device and the blocking part; the adjustment device and the blocking portion are configured to exert a pre-force on the spring; the position of the adjustment device on the nozzle body is adjustable; the nozzle is configured to open when the spring is compressed and to close when the spring is reset.

2. An injection molding machine nozzle as claimed in claim 1, wherein an outer surface of said nozzle body is provided with external threads, and said adjusting means is an annular member engaging with said external threads.

3. An injection molding machine nozzle as claimed in claim 2, wherein said adjustment means comprises a hex nut engaged with said external threads and a washer located between said hex nut and said spring.

4. The injection molding machine nozzle of claim 1, wherein said coupling portion comprises a threaded portion configured to couple with an injection molding machine barrel and a flange at an end of said threaded portion.

5. The injection molding machine nozzle of claim 2, wherein said blocking portion is an annular member that engages said external threads.

6. An injection molding machine nozzle as claimed in claim 2, wherein said blocking portion is fixed to said nozzle body.

7. The injection molding machine nozzle of claim 2, wherein said blocking portion is a boss provided on said nozzle body, said boss having a diameter greater than an inner diameter of said spring.

8. The injection molding machine nozzle of claim 1, wherein said spring is a belleville spring or a coil spring.

9. The nozzle of an injection molding machine according to claim 1, wherein a thimble seat, a sealing thimble and a discharge port are arranged in the nozzle body, the sealing thimble is slidably arranged in the thimble seat, one end of the sealing thimble is matched with the discharge port to control sealing, and the other end of the sealing thimble is provided with a blocking portion.

10. An injection molding machine comprising an injection molding machine nozzle according to any one of claims 1 to 9.

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