CN210336735U - Needle valve device of hot runner mold with novel valve sleeve - Google Patents
Needle valve device of hot runner mold with novel valve sleeve Download PDFInfo
- Publication number
- CN210336735U CN210336735U CN201920473260.9U CN201920473260U CN210336735U CN 210336735 U CN210336735 U CN 210336735U CN 201920473260 U CN201920473260 U CN 201920473260U CN 210336735 U CN210336735 U CN 210336735U
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- valve
- valve needle
- needle
- sleeve
- hot runner
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Abstract
The utility model discloses a needle valve device of a hot runner mold with a novel valve sleeve, which comprises a cylinder cover plate, a valve needle cylinder, a valve needle body, a flow distribution plate, a hot nozzle and a hot runner plate; the valve needle cylinder is arranged on the cylinder cover plate; the front end of the valve needle cylinder is provided with the valve needle body; the hot nozzle is arranged on the hot runner plate; the splitter plate is provided with a mounting groove; the valve needle sleeve is in threaded sealing connection with the mounting groove; a valve needle hole is arranged in the valve needle sleeve; the valve needle hole comprises an avoidance section and a sealing section which are connected in sequence; the air avoiding section is in clearance fit with the valve needle body, and the sealing section is in interference fit with the valve needle body; and a gasket is arranged between the cylinder cover plate and the flow distribution plate. The utility model discloses reduce the appearance rate that needle body and needle cover blocked, improve the valve needle cover and the glue reliability of sealing of flow distribution plate, the effect of sealing the glue can not receive the influence of gasket again to improve the reliability and the security of system.
Description
Technical Field
The utility model relates to an injection mold field, in particular to needle valve device of novel valve barrel in hot runner mold area.
Background
Needle valves are a common structural component of injection molds. The most important part of the needle valve system of the hot runner mold is needle valve sealing glue: firstly, the valve needle and the mould core are sealed by glue, and secondly, the valve needle and the valve sleeve are self-sealed. The valve needle can contact with the flow distribution plate when passing through the flow distribution plate, and a transition piece is needed to seal glue at the moment so as to avoid the problem of glue leakage between the flow distribution plate and the valve needle.
Referring to fig. 1 and 2, a valve needle sleeve 1' of a conventional hot runner mold structure and a mounting structure thereof are shown. The center of the valve needle sleeve 1 'is provided with a pinhole penetrating through the valve needle sleeve 1', the sealing of the valve needle and the valve needle sleeve 1 'is realized through the pinhole, the valve needle sleeve 1' and the flow distribution plate 3 'press the valve needle sleeve 1' through the gasket 2 ', and the valve needle sleeve 1' is pressed on the flow distribution plate to realize the sealing of the valve needle sleeve 1 'and the flow distribution plate 3'. The above structure has the following disadvantages: 1. the contact surface of the valve needle and the valve needle sleeve 1 'is too large, so that the problem that the valve needle and the valve needle sleeve 1' are clamped easily occurs; 2. the valve needle sleeve 1 'must be pressed by the gasket 2' and the sealing requirement is high, otherwise the problem of glue leakage between the valve needle sleeve 1 'and the flow distribution plate 3' can occur.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a hot runner mold takes needle valve device of novel valve barrel adopts neotype needle cover structure, cooperation flow distribution plate and needle body, has solved the seal installation between needle body and the flow distribution plate and has sealed the problem of gluing.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a needle valve device of a hot runner mold with a novel valve sleeve comprises a cylinder cover plate, a valve needle cylinder, a valve needle body, a flow distribution plate, a hot nozzle and a hot runner plate; the valve needle cylinder is arranged on the cylinder cover plate; the front end of the valve needle cylinder is provided with the valve needle body, and the tail end of the valve needle body is connected with an output shaft of the valve needle cylinder; the front end of the valve needle body penetrates through the flow distribution plate and extends into the hot nozzle; the hot nozzle is arranged on the hot runner plate, the tail end of the hot nozzle is in sealing contact with the splitter plate, a glue injection hot runner is arranged on the splitter plate, and the glue injection hot runner is communicated with the hot nozzle; the splitter plate is provided with a mounting groove; the valve needle sleeve is arranged in the mounting groove and is in threaded sealing connection with the mounting groove; a valve needle hole is arranged in the valve needle sleeve; the valve needle hole comprises an avoidance section and a sealing section which are connected in sequence; the space avoiding section is positioned at one end close to the valve needle cylinder; the air avoiding section is in clearance fit with the valve needle body, and the sealing section is in interference fit with the valve needle body; a gasket is arranged between the cylinder cover plate and the flow distribution plate; the valve needle body passes through the shim and the valve needle sleeve.
As a preferred scheme of the utility model, the gasket is made of high temperature resistant rubber; the gasket is of a disc-shaped structure and is sleeved on the valve needle sleeve.
As a preferred scheme of the utility model, install the heater on the hot mouth, the heater heats the hot mouth.
As a preferred scheme of the utility model, the length of sealing section is 6-10 mm.
As a preferred scheme of the utility model, the length of seal segment is 8.5 mm.
As an optimized proposal of the utility model, the space avoiding section is 0.25mm between the valve needle hole and the needle valve body.
As an optimized proposal of the utility model, the valve needle sleeve is of a cylinder structure and is provided with a ladder convex ring on the outer wall in the middle of the valve needle sleeve.
Through the technical scheme, the utility model discloses technical scheme's beneficial effect is: the utility model discloses rational in infrastructure, improve the needle hole of needle cover, reduce the appearance rate that needle body and needle cover blocked, through the institutional advancement of needle cover, improve the needle cover and flow distribution plate seal the glue reliability, the effect of sealing the glue can not receive the influence of gasket again to improve the reliability and the security of system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a prior art valve needle sleeve.
Fig. 2 is a schematic view of a mounting structure of a prior art valve needle sleeve.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a schematic structural diagram of the valve needle sleeve of the present invention.
Fig. 5 is a schematic view of the mounting structure of the valve needle sleeve of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1 ', 2 ' and 3 ' are respectively a valve needle sleeve, a gasket and a flow distribution plate in the prior art.
1. Cylinder cover plate 2, valve needle cylinder 3, valve needle body
4. Splitter plate 5, gasket 6, valve needle sleeve
7. And (4) heating the mouth.
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 efforts belong to the protection scope of the present invention.
Examples
With reference to fig. 1, the utility model discloses a needle valve device of hot runner mold area novel valve barrel for on the hot runner mold needle valve system, including cylinder cover plate 1, needle cylinder 2, needle body 3, flow distribution plate 4, hot mouth 7 and hot runner plate. The valve needle cylinder 2 is mounted on the cylinder cover plate 1. The front end of the valve needle cylinder 2 is provided with a valve needle body 3, and the tail end of the valve needle body 3 is connected with an output shaft of the valve needle cylinder 2. The front end of the valve needle body 3 penetrates through the flow distribution plate 4 and extends into the hot nozzle 7. The hot nozzle 7 is arranged on the hot runner plate, the tail end of the hot nozzle 7 is in sealing contact with the splitter plate 4, the splitter plate 4 is provided with a glue injection hot runner, and the glue injection hot runner is communicated with the hot nozzle 7. The splitter plate 4 is provided with a mounting groove. The valve needle sleeve 6 is arranged in the mounting groove, and the valve needle sleeve 6 is in threaded sealing connection with the mounting groove. In order to improve the sealing and glue sealing effect, the valve needle sleeve 6 is of a cylinder structure, and a stepped convex ring is arranged on the outer wall in the middle of the valve needle sleeve 6. A valve needle hole is arranged in the valve needle sleeve 6. The valve needle hole comprises an avoidance section and a sealing section which are connected in sequence. The space avoiding section is positioned at one end close to the valve needle cylinder 2; keep away empty section and 3 clearance fit of needle body, sealed section and 3 interference fit of needle body. A gasket 5 is arranged between the cylinder head plate 1 and the flow distribution plate 4. The needle body 3 passes through the gasket 5 and the needle cover 6. Preferably, the gasket 5 is made of high temperature resistant rubber; the gasket 5 is a disc-shaped structure and is sleeved on the valve needle sleeve 6.
In order to improve the injection molding effect and avoid the injection glue condensation to block the hot nozzle 7, a heater is arranged on the hot nozzle 7 and heats the hot nozzle 7.
On the basis of ensuring the sealing effect of the valve needle body 3 and the valve needle sleeve 6, in order to improve the smoothness of the movement of the valve needle body 3, the length of the sealing section is preferably 6-10mm, and is preferably 8.5 mm. Meanwhile, in the clearance section, the distance between the needle hole and the needle valve body is 0.25 mm.
With reference to fig. 1-5, compared with the prior art, the present invention is provided with 2 key improvements: 1. the contact surface between the valve needle body 3 and the valve needle sleeve 6 is changed into the contact length of 8.5mm, and the rest contact surfaces are separated by 0.25mm, so that the occurrence rate of the clamping of the valve needle and the valve sleeve can be reduced, and the movement resistance of the valve needle is also reduced; 2. the valve needle sleeve 6 and the flow distribution plate 4 are sealed by adopting a thread structure, the valve needle sleeve 6 is locked with the flow distribution plate 4 through threads, so that the plane at the lower part of the threads is in contact with the flow distribution plate 4 to be sealed, the sealing reliability of the valve needle sleeve 6 and the flow distribution plate 4 can be improved, the sealing effect cannot be influenced by the gasket 5, and the reliability of the system is improved.
Through the above-mentioned specific embodiment, the beneficial effects of the utility model are that: the utility model discloses rational in infrastructure, improve the needle hole of needle cover 6, reduce the appearance rate that needle body 3 and needle cover 6 blocked, through the institutional advancement of needle cover 6, improve the glue reliability of sealing of needle cover 6 and flow distribution plate 4, the effect of sealing the glue can not receive gasket 5's influence again yet to improve the reliability and the security of system.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A needle valve device of a hot runner mold with a novel valve sleeve is characterized by comprising a cylinder cover plate, a valve needle cylinder, a valve needle body, a flow distribution plate, a hot nozzle and a hot runner plate; the valve needle cylinder is arranged on the cylinder cover plate; the front end of the valve needle cylinder is provided with the valve needle body, and the tail end of the valve needle body is connected with an output shaft of the valve needle cylinder; the front end of the valve needle body penetrates through the flow distribution plate and extends into the hot nozzle; the hot nozzle is arranged on the hot runner plate, the tail end of the hot nozzle is in sealing contact with the splitter plate, a glue injection hot runner is arranged on the splitter plate, and the glue injection hot runner is communicated with the hot nozzle; the splitter plate is provided with a mounting groove; the valve needle sleeve is arranged in the mounting groove and is in threaded sealing connection with the mounting groove; a valve needle hole is arranged in the valve needle sleeve; the valve needle hole comprises an avoidance section and a sealing section which are connected in sequence; the space avoiding section is positioned at one end close to the valve needle cylinder; the air avoiding section is in clearance fit with the valve needle body, and the sealing section is in interference fit with the valve needle body; a gasket is arranged between the cylinder cover plate and the flow distribution plate; the valve needle body passes through the shim and the valve needle sleeve.
2. The hot runner mold needle valve assembly with novel valve sleeve as claimed in claim 1, wherein said gasket is made of high temperature resistant rubber; the gasket is of a disc-shaped structure and is sleeved on the valve needle sleeve.
3. The hot runner mold needle valve assembly with the novel valve sleeve as claimed in claim 2, wherein a heater is mounted on the hot nozzle, and the heater heats the hot nozzle.
4. The hot runner mold needle valve assembly with novel valve sleeve as claimed in claim 3 wherein the length of the sealing section is 6-10 mm.
5. The hot runner mold needle valve assembly with novel valve sleeve as claimed in claim 4 wherein the length of the sealing section is 8.5 mm.
6. The hot runner mold needle valve assembly with novel valve sleeve as claimed in claim 5, wherein in said evacuation section, the distance between said needle valve hole and said needle valve body is 0.25 mm.
7. The hot runner mold needle valve device with the novel valve sleeve as claimed in claim 5, wherein the valve sleeve is in a cylinder structure, and a stepped convex ring is arranged on the middle outer wall of the valve sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473260.9U CN210336735U (en) | 2019-04-09 | 2019-04-09 | Needle valve device of hot runner mold with novel valve sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920473260.9U CN210336735U (en) | 2019-04-09 | 2019-04-09 | Needle valve device of hot runner mold with novel valve sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210336735U true CN210336735U (en) | 2020-04-17 |
Family
ID=70179696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920473260.9U Expired - Fee Related CN210336735U (en) | 2019-04-09 | 2019-04-09 | Needle valve device of hot runner mold with novel valve sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210336735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220221079A1 (en) * | 2019-05-22 | 2022-07-14 | Fujikoki Corporation | Flow channel switching valve |
-
2019
- 2019-04-09 CN CN201920473260.9U patent/CN210336735U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220221079A1 (en) * | 2019-05-22 | 2022-07-14 | Fujikoki Corporation | Flow channel switching valve |
| US11754195B2 (en) * | 2019-05-22 | 2023-09-12 | Fujikoki Corporation | Flow channel switching valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 Termination date: 20210409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |