CN214111307U - Valve needle lower end positioning hot runner system - Google Patents
Valve needle lower end positioning hot runner system Download PDFInfo
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- CN214111307U CN214111307U CN202023262008.5U CN202023262008U CN214111307U CN 214111307 U CN214111307 U CN 214111307U CN 202023262008 U CN202023262008 U CN 202023262008U CN 214111307 U CN214111307 U CN 214111307U
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- valve needle
- valve
- needle
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- runner system
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Abstract
The utility model discloses a valve needle lower end positioning hot runner system, which comprises a valve needle, a splitter plate and a hot nozzle component; the flow distribution plate and the hot nozzle component are provided with communicated main flow channels, the discharge end of the hot nozzle component is provided with a valve needle sleeve, the valve needle sleeve is provided with a flow distribution channel communicated with the main flow channel and a positioning hole communicated with the valve needle hole, the flow distribution channel is communicated with the positioning hole, the valve needle penetrates through the positioning hole, and the valve needle and the positioning hole are in clearance fit. The utility model discloses will the locating part setting of needle can effectual improvement needle at the tip of needle, reduces the machining precision demand of whole needle mechanism to the subchannel also sets up the tip at the needle, can reduce the too early reposition of redundant personnel of fluid and the temperature loss that causes, and the not smooth problem of flow.
Description
Technical Field
The utility model belongs to the technical field of the mould, especially, relate to a hot runner system.
Background
The hot runner system is generally applied to an injection mold, and the plastic of a runner and a sprue is ensured to be kept in a molten state by a heating method, the hot runner system generally comprises a hot nozzle, a splitter plate, a temperature control box, accessories and the like, and the hot nozzle generally comprises two types: the hot nozzle form directly determines the selection of the hot runner system and the manufacture of a mould, so that the hot runner system is divided into an open hot runner system and a needle valve type hot runner system correspondingly;
the needle valve type hot runner system drives the movement of a valve needle through a pneumatic component to realize the control of the flow of the plastic fluid; in the prior art, the flow passages in the system are divided by the dividing plate and enter the valve needle hole after being divided, and the valve needle is generally longer, so that the processing requirements on the valve needle, the valve needle hole and other parts are very high in order to obtain a better fluid flowing effect, and the longer valve needle is difficult to avoid shaking when in use, so that the outflow of fluid is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a needle lower extreme location hot runner system, will the locating part setting of needle can effectual improvement needle stability at the tip of needle, reduces the machining precision demand of whole needle mechanism to the subchannel also sets up the tip at the needle, can reduce the too early reposition of redundant personnel of fluid and the temperature loss that causes to and the not smooth problem of flow.
In order to solve the technical problem, the utility model discloses a technical scheme of adoption as follows:
a hot runner system for positioning the lower end of a valve needle comprises the valve needle, a splitter plate and a hot nozzle assembly;
the flow distribution plate is arranged at one end of the hot nozzle component, the other end of the hot nozzle component is a discharge end, the flow distribution plate and the hot nozzle component are provided with communicated valve needle holes, the valve needle penetrates through the valve needle hole, and the valve needle can reciprocate along the axial direction of the valve needle;
the flow distribution plate and the hot nozzle assembly are provided with communicated main flow channels, the discharge end of the hot nozzle assembly is provided with a valve needle sleeve, the valve needle sleeve is provided with a flow distribution channel communicated with the main flow channel and a positioning hole communicated with the valve needle hole, the flow distribution channel is communicated with the positioning hole, the valve needle penetrates through the positioning hole, and the valve needle and the positioning hole are in clearance fit.
Further, the positioning hole is a stepped hole with two different diameters, wherein the smaller diameter portion is in clearance fit with the valve needle, and the larger diameter portion is communicated with the branch passage.
Further, the discharge end of the hot nozzle assembly is provided with a mounting hole, and the valve needle sleeve is fixedly mounted in the mounting hole.
Furthermore, a gap is formed between the outer side wall of the valve needle sleeve and the inner side wall of the mounting hole, a flange is arranged at one end, inserted into the mounting hole, of the valve needle sleeve, the locking piece is inserted into the gap and fixedly connected with the hot nozzle assembly, and the locking piece can abut against the flange to fix the valve needle sleeve.
Further, the valve needle sleeve is made of copper.
Further, the valve further comprises a cylinder assembly which is connected with the valve needle to drive the valve needle to reciprocate.
Furthermore, 3 valve needles are arranged, and the 3 valve needles are circumferentially and uniformly distributed by taking the axis of the hot nozzle as a center.
The utility model has the advantages that:
the utility model discloses a hot runner system will the locating part setting of needle is at the tip of needle, and the stability that can effectual improvement needle reduces the machining precision demand of whole needle mechanism to the subchannel also sets up the tip at the needle, can reduce the too early reposition of redundant personnel of fluid and the temperature loss who causes, and the not smooth problem of flow.
The positioning holes are used for respectively positioning and guiding two stepped holes with different diameters, the positioning holes have the functions of positioning the valve needle and a flow channel simply, the valve needle only contacts fluid at the end part to control the fluid, most of the fluid flows in the same flow channel in the hot nozzle, and the flowability is very good.
Still include the locking piece, come fixed mounting valve needle cover through the locking piece, the modular design of the product of being convenient for to the hot runner system of different specifications, only need to change the valve needle with the valve needle cover can, the valve needle cover need not process the structure of being connected with hot nozzle yet, and it is convenient to make.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic view of the overall structure of the valve needle and thermal nozzle assembly of the present invention;
fig. 2 is a cross-sectional view of the valve needle and thermal nozzle assembly of the present invention;
fig. 3 is a cross-sectional view of the valve needle sleeve of the present invention;
fig. 4 is an exploded view of the valve needle and thermal nozzle assembly of the present invention;
the parts in the drawings are marked as follows:
valve needle 1, manifold 2, thermal nozzle assembly 3, valve needle bore 31, primary flow passage 32, mounting bore 33, valve needle sleeve 4, manifold 41, locating hole 42, flange 43, locking piece 5 and cylinder assembly 6.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Example (b):
a valve pin lower end positioning hot runner system, as shown in fig. 1 to 4: the hot runner system comprises a valve needle 1, a flow distribution plate 2 and a hot nozzle component 3;
the flow distribution plate is arranged at one end of the hot nozzle component, the other end of the hot nozzle component is a discharge end, the flow distribution plate and the hot nozzle component are provided with a valve needle hole 31 which is communicated, the valve needle penetrates through the valve needle hole, and the valve needle can reciprocate along the axial direction of the valve needle;
the flow distribution plate and the hot nozzle component are provided with a main flow passage 32 communicated with each other, the discharge end of the hot nozzle component is provided with a valve needle sleeve 4, the valve needle sleeve is provided with a flow distribution passage 41 communicated with the main flow passage and a positioning hole 42 communicated with the valve needle hole, the flow distribution passage is communicated with the positioning hole, the valve needle penetrates through the positioning hole, and the valve needle is in clearance fit with the positioning hole.
The utility model discloses a hot runner system will the locating part setting of needle is at the tip of needle, and the stability that can effectual improvement needle reduces the machining precision demand of whole needle mechanism to the subchannel also sets up the tip at the needle, can reduce the too early reposition of redundant personnel of fluid and the temperature loss who causes, and the not smooth problem of flow.
In this embodiment, the needle is equipped with 3, 3 the needle with the axis of hot nozzle is central circumference equipartition, and the setting of 3 needles is favorable to in the even entering mould of fluid to there is not higher internal pressure, can prevent that the product of moulding plastics from producing the bad condition of gas pocket and wire drawing.
This embodiment is shown in fig. 2 and 3: the positioning hole is a stepped hole with two different diameters, wherein the part with the smaller diameter is in clearance fit with the valve needle, and the part with the larger diameter is communicated with the branch channel.
In brief, the positioning hole has the functions of positioning the valve needle and the flow channel, only the end part of the valve needle is contacted with fluid to control the fluid, most of the fluid flows in the same flow channel in the hot nozzle, and the fluidity is very good.
As shown in fig. 2 and 4: the discharge end of the hot nozzle assembly has a mounting hole 33 in which the valve needle sleeve is fixedly mounted.
A gap is formed between the outer side wall of the valve needle sleeve and the inner side wall of the mounting hole, a flange 43 is arranged at one end of the valve needle sleeve inserted into the mounting hole, the valve needle sleeve further comprises a locking piece 5, the locking piece is inserted into the gap and is fixedly connected with the hot nozzle assembly, the locking piece can be abutted against the flange to fix the valve needle sleeve, and in the embodiment, the locking piece and the hot nozzle assembly are in threaded connection.
This embodiment comes fixed mounting valve needle cover through the locking piece, and the modular design of the product of being convenient for to the hot runner system of different specifications, only need to change the needle with the valve needle cover can, the valve needle cover need not process and hot nozzle connection's structure yet, makes the convenience.
In this embodiment, the valve needle cover is made of copper, and the copper material has fast heat conduction and good heat storage, and can ensure the temperature of fluid, thereby ensuring the fluidity of the fluid.
The present embodiment further comprises a cylinder assembly 6 connected to the valve needle for driving the reciprocating movement of the valve needle.
The working principle of the utility model is as follows:
the positioning part of the valve needle is arranged at the end part of the valve needle in the hot runner system, so that the stability of the valve needle can be effectively improved, the processing precision requirement of the whole valve needle mechanism is reduced, and the branch flow passage is also arranged at the end part of the valve needle, so that the problems of temperature loss and unsmooth flow caused by premature flow distribution of fluid can be reduced.
The positioning holes are used for respectively positioning and guiding two stepped holes with different diameters, the positioning holes have the functions of positioning the valve needle and a flow channel simply, the valve needle only contacts fluid at the end part to control the fluid, most of the fluid flows in the same flow channel in the hot nozzle, and the flowability is very good.
Come fixed mounting valve needle cover through the locking piece, the modular design of the product of being convenient for to the hot runner system of different specifications, only need to change the needle with the valve needle cover can, the valve needle cover also need not process and hot nozzle connection's structure, and it is convenient to make.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the same principle as the present invention.
Claims (7)
1. The utility model provides a needle lower extreme location hot runner system which characterized in that: comprises a valve needle (1), a splitter plate (2) and a hot nozzle component (3);
the flow distribution plate is arranged at one end of the hot nozzle component, the other end of the hot nozzle component is a discharge end, the flow distribution plate and the hot nozzle component are provided with communicated valve needle holes (31), the valve needle penetrates through the valve needle holes, and the valve needle can reciprocate along the axial direction of the valve needle;
the flow distribution plate and the hot nozzle assembly are provided with a main flow passage (32) communicated with each other, the discharge end of the hot nozzle assembly is provided with a valve needle sleeve (4), the valve needle sleeve is provided with a flow distribution passage (41) communicated with the main flow passage and a positioning hole (42) communicated with the valve needle hole, the flow distribution passage is communicated with the positioning hole, the valve needle penetrates through the positioning hole, and the valve needle is in clearance fit with the positioning hole.
2. The valve pin lower end positioning hot runner system of claim 1, wherein: the positioning hole is a stepped hole with two different diameters, wherein the part with the smaller diameter is in clearance fit with the valve needle, and the part with the larger diameter is communicated with the branch channel.
3. The valve pin lower end positioning hot runner system of claim 2, wherein: the discharge end of the hot nozzle assembly is provided with a mounting hole (33), and the valve needle sleeve is fixedly mounted in the mounting hole.
4. The valve pin lower end positioning hot runner system of claim 3, wherein: the valve needle sleeve comprises a valve needle sleeve body and is characterized in that a gap is formed between the outer side wall of the valve needle sleeve body and the inner side wall of the mounting hole, a flange (43) is arranged at one end, inserted into the mounting hole, of the valve needle sleeve body, the valve needle sleeve body further comprises a locking piece (5), the locking piece is inserted into the gap and is fixedly connected with the hot nozzle assembly, and the locking piece can abut against the flange to fix the valve needle sleeve body.
5. The valve pin lower end positioning hot runner system of claim 1, wherein: the valve needle cover is made of copper.
6. The valve pin lower end positioning hot runner system of claim 1, wherein: the valve further comprises a cylinder assembly which is connected with the valve needle to drive the valve needle to reciprocate.
7. The valve pin lower end positioning hot runner system of any one of claims 1 to 6, wherein: the needle is equipped with 3, 3 the needle use the axis of hot nozzle is central circumference equipartition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023262008.5U CN214111307U (en) | 2020-12-29 | 2020-12-29 | Valve needle lower end positioning hot runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023262008.5U CN214111307U (en) | 2020-12-29 | 2020-12-29 | Valve needle lower end positioning hot runner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214111307U true CN214111307U (en) | 2021-09-03 |
Family
ID=77486019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023262008.5U Active CN214111307U (en) | 2020-12-29 | 2020-12-29 | Valve needle lower end positioning hot runner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214111307U (en) |
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2020
- 2020-12-29 CN CN202023262008.5U patent/CN214111307U/en active Active
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