CN214726139U - Spring type single-point needle valve hot runner nozzle - Google Patents
Spring type single-point needle valve hot runner nozzle Download PDFInfo
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- CN214726139U CN214726139U CN202120909928.7U CN202120909928U CN214726139U CN 214726139 U CN214726139 U CN 214726139U CN 202120909928 U CN202120909928 U CN 202120909928U CN 214726139 U CN214726139 U CN 214726139U
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- needle valve
- nozzle
- guide body
- hot runner
- cavity
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- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model belongs to the technical field of hot runner mold, especially, relate to a spring single-point needle valve hot runner nozzle. A spring single point needle valve hot runner nozzle, comprising: needle valve guide body, coaxial setting up the mainstream at needle valve guide body top chew the body and the coaxial nozzle cap that sets up in needle valve guide body bottom, the needle valve guide body includes the piston alignment jig, the chamber is held in the inside setting of needle valve guide body, go up and be connected through resilient means between the top of adjusting the chamber and the piston alignment jig, the bottom center department of piston alignment jig sets up the needle valve mount pad, the spiro union sets up the needle valve in the needle valve mount pad, the mainstream is chewed and is set up heating device on the body. The utility model provides a needle valve passes through screw thread fixed connection, and when the needle valve took place the skew or damaged, change that can be timely.
Description
Technical Field
The utility model belongs to the technical field of hot runner mold, especially, relate to a spring single-point needle valve hot runner nozzle.
Background
The needle valve type hot runner system is characterized in that a hot nozzle and a hot runner plate are arranged on an injection mould, and plastic is always kept in a molten state after coming out of a barrel of an injection molding machine by utilizing the heating principle. As a result, the water level of the product can be directly injected into the injection molding machine, so that when the finished product is demolded, the nozzle opening is closed due to the action of the needle valve, one or more water gaps are avoided, and no waste material is generated. The needle valve in the existing needle valve hot runner system is easy to break due to the action of repeated up-and-down motion which is required to be stopped, the maintenance needs to spend a large amount of time, and the molten plastic needs high temperature to maintain the molten state, but the existing needle valve hot runner system cannot provide a high-temperature environment for the whole process of the plastic.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
In order to overcome the defects, the utility model aims to provide a spring type single-point needle valve hot runner nozzle to solve the technical problem that a needle valve is easy to damage.
In order to achieve the purpose, the technical scheme provided by the application is as follows:
a spring single point needle valve hot runner nozzle, comprising: a needle valve guide body, a main stream nozzle body coaxially arranged at the top of the needle valve guide body and a nozzle cap coaxially arranged at the bottom of the needle valve guide body, the needle valve guide body comprises a piston adjusting frame, an accommodating cavity is arranged in the needle valve guide body, the piston adjusting frame is arranged in the accommodating cavity and divides the accommodating cavity into an upper adjusting cavity and a lower shunting cavity which are mutually independent, the top of the upper adjusting cavity is connected with the piston adjusting frame through an elastic device, the center of the bottom of the piston adjusting frame is provided with a needle valve mounting seat, the needle valve is screwed in the needle valve mounting seat, the main flow nozzle body comprises a main flow channel, the main flow channel is connected with the branch ports of the needle valve guide body through a plurality of branch channels, the flow dividing port is connected with the lower flow dividing cavity, the center of the nozzle cap is provided with an outflow port corresponding to the needle valve, and the main flow nozzle body is provided with a heating device.
Preferably, the needle valve guide body is in threaded connection with the main nozzle body.
Preferably, the nozzle cap is in threaded connection with the needle valve guide body.
Preferably, the outer end of the main stream nozzle body is provided with a heat-insulation lining plate, the heat-insulation lining plate is a heat-insulation asbestos plate, the main stream nozzle body is provided with a vacuum heat-insulation cavity, and the vacuum heat-insulation cavity is arranged inside the heat-insulation lining plate.
Preferably, the piston adjusting frame comprises a guide rod and a piston adjusting plate, wherein the guide rod is coaxially arranged with the needle valve guide body, the piston adjusting plate is perpendicular to the guide rod, and a sealing ring is arranged between the piston adjusting plate and the upper adjusting cavity.
Preferably, the elastic means is a spring.
Preferably, the number of the branch channels is 2-8.
Has the advantages that:
the needle valve in the utility model is fixedly connected through the thread, and can be replaced in time when the needle valve is distorted or damaged; through setting up heating device, vacuum heat preservation chamber and heat preservation welt, can be effectual assurance needle valve hot runner nozzle be in the high temperature state, avoid the plastic low temperature state that solidifies to appear.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a view showing a usage state of the present invention;
reference numerals:
1. the nozzle comprises a main flow nozzle body, 2 parts of an upper adjusting cavity, 3 parts of a heating device, 4 parts of an elastic device, 5 parts of a guide rod, 6 parts of a piston adjusting plate, 7 parts of a branch flow port, 8 parts of a lower branch flow cavity, 9 parts of a nozzle cap, 10 parts of a needle valve, 11 parts of a needle valve mounting seat, 12 parts of a needle valve guide body, 13 parts of a branch flow channel, 14 parts of a vacuum heat preservation cavity, 15 parts of a heat preservation lining plate, 16 parts of an outflow port, 17 parts of a sealing ring and 18 parts of a main flow channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
A spring single point needle valve hot runner nozzle, comprising: a needle valve guide body 12, a main nozzle body 1 coaxially arranged at the top of the needle valve guide body 12 and a nozzle cap 9 coaxially arranged at the bottom of the needle valve guide body 12, the needle valve guide body 12 comprises a piston adjusting frame, an accommodating cavity is arranged inside the needle valve guide body 12, the piston adjusting frame is arranged in the accommodating cavity and divides the accommodating cavity into an upper adjusting cavity 2 and a lower shunting cavity 8 which are mutually independent, the piston adjusting frame comprises a guide rod 5 which is coaxially arranged with the needle valve guide body 12 and a piston adjusting plate 6 which is vertical to the guide rod 5, a sealing ring 17 is arranged between the piston adjusting plate 6 and the upper adjusting cavity 2, the piston adjusting frame can move up and down in the upper adjusting cavity 2 and can prevent plastic cement from upwards permeating into the upper adjusting cavity 2, the top of the upper adjusting cavity 2 is connected with the piston adjusting plate 6 through an elastic device 4, and the elastic device 4 is a spring.
The bottom center department of piston regulating plate 6 sets up needle valve mount pad 11, threaded connection sets up needle valve 10 in the needle valve mount pad 11, and needle valve 10 detachable sets up, when needle valve 10 takes place the damage, can be quick change needle valve 10, need not to shut down, more need not to change whole needle valve hot runner nozzle, has practiced thrift manufacturing cost.
The main flow chews body 1 and includes a sprue 18, set up several subchannel 7 on the lateral wall of needle valve guide 12, sprue 18 is connected with the subchannel 7 of needle valve guide 12 through several subchannel 13, subchannel 13 sets up 2-8, subchannel 7 is connected with lower reposition of redundant personnel chamber 8, the center department of nozzle cap 9 sets up the egress opening 16 corresponding with needle valve 10, molten state's plastic is by sprue 18 through subchannel 13 during the reposition of redundant personnel chamber 8 flows in through subchannel 7, when the egress opening 16 of needle valve 10 upwards removal nozzle cap 9 was opened, the plastic flowed into next grade equipment by the egress opening.
The inside center department of the body 1 is chewed to the mainstream sets up the internal thread connection corresponding with needle valve guide 12, the outside external screw thread that corresponds with the internal thread of the body 1 is chewed to the top of needle valve guide 12, set up the external screw thread on the nozzle cap 9, the bottom of needle valve guide 12 sets up the internal thread corresponding with the external screw thread on the nozzle cap 9, through threaded connection, convenient dismantlement, simple structure between the body 1 is chewed to the mainstream, needle valve guide 12 and the nozzle cap 9.
Set up heating device 3 on the body is chewed to the mainstream, heating device 3 sets up in the inside of subchannel 13, the outside of subchannel 13 sets up vacuum heat preservation chamber 14, heating device 3 includes several heater strips, heats the plastic in the needle valve hot runner nozzle, the outer end that the body 1 was chewed to the mainstream sets up heat preservation welt 15, heat preservation welt 15 is heat preservation asbestos board, the mainstream is chewed and is set up vacuum heat preservation chamber 14 on the body 1, vacuum heat preservation chamber 14 sets up in heat preservation welt 15's inside, heat preservation welt 15 is first heat preservation device, and vacuum heat preservation chamber 14 is the second heat preservation device, and two heat preservation devices can reduce the heat consumption of needle valve hot runner nozzle to reduce heating device's power, reduced manufacturing cost.
The utility model discloses a sprue flows into the plastic of fusibility through the subchannel down in the reposition of redundant personnel chamber, because the self weight of piston alignment jig and needle valve drives the spring and moves down, make the needle valve close the egress opening of nozzle cap is sealed, back fused plastic gets into down in the reposition of redundant personnel chamber, because constantly there is the plastic to get into, make the piston alignment jig shift up, thereby drive the needle valve and shift up, make the plastic of molten condition flow out from the egress opening, the plastic in reposition of redundant personnel intracavity flows when the completion of moulding plastics, the needle valve is plugged up the egress opening once more under the dead weight of needle valve and piston alignment jig, close, thereby once having accomplished and having moulded plastics.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. A spring single point needle valve hot runner nozzle, comprising: a needle valve guide body, a main stream nozzle body coaxially arranged at the top of the needle valve guide body and a nozzle cap coaxially arranged at the bottom of the needle valve guide body, it is characterized in that the needle valve guide body comprises a piston adjusting frame, an accommodating cavity is arranged in the needle valve guide body, the piston adjusting frame is arranged in the accommodating cavity and divides the accommodating cavity into an upper adjusting cavity and a lower shunting cavity which are mutually independent, the top of the upper adjusting cavity is connected with the piston adjusting frame through an elastic device, the center of the bottom of the piston adjusting frame is provided with a needle valve mounting seat, the needle valve is screwed in the needle valve mounting seat, the main flow nozzle body comprises a main flow channel, the main flow channel is connected with the branch ports of the needle valve guide body through a plurality of branch channels, the flow dividing port is connected with the lower flow dividing cavity, the center of the nozzle cap is provided with an outflow port corresponding to the needle valve, and the main flow nozzle body is provided with a heating device.
2. The spring type single point needle valve hot runner nozzle of claim 1, wherein the needle valve guide body is in threaded connection with the main nozzle body.
3. The spring type single point needle valve hot runner nozzle of claim 1, wherein the nozzle cap and the needle valve guide body are in threaded connection.
4. The spring type single-point needle valve hot runner nozzle according to claim 1, wherein a heat preservation lining plate is arranged at the outer end of the main stream nozzle body, the heat preservation lining plate is a heat preservation asbestos plate, a vacuum heat preservation cavity is arranged on the main stream nozzle body, and the vacuum heat preservation cavity is arranged inside the heat preservation lining plate.
5. The spring type single-point needle valve hot runner nozzle of claim 1, wherein the piston adjusting frame comprises a guide rod and a piston adjusting plate, the guide rod and the piston adjusting plate are coaxially arranged with the needle valve guide body, the piston adjusting plate is perpendicular to the guide rod, and a sealing ring is arranged between the piston adjusting plate and the upper adjusting cavity.
6. The spring type single point needle valve hot runner nozzle of claim 1, wherein the resilient means is a spring.
7. The spring type single point needle valve hot runner nozzle of claim 1, wherein 2-8 sub-runners are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120909928.7U CN214726139U (en) | 2021-04-29 | 2021-04-29 | Spring type single-point needle valve hot runner nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120909928.7U CN214726139U (en) | 2021-04-29 | 2021-04-29 | Spring type single-point needle valve hot runner nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214726139U true CN214726139U (en) | 2021-11-16 |
Family
ID=78615024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120909928.7U Active CN214726139U (en) | 2021-04-29 | 2021-04-29 | Spring type single-point needle valve hot runner nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214726139U (en) |
-
2021
- 2021-04-29 CN CN202120909928.7U patent/CN214726139U/en active Active
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