CN210211225U - Single point needle valve type cold nozzle - Google Patents
Single point needle valve type cold nozzle Download PDFInfo
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- CN210211225U CN210211225U CN201920802413.XU CN201920802413U CN210211225U CN 210211225 U CN210211225 U CN 210211225U CN 201920802413 U CN201920802413 U CN 201920802413U CN 210211225 U CN210211225 U CN 210211225U
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- nozzle
- valve needle
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Abstract
The utility model discloses a single-point needle valve type cold nozzle, wherein a cold runner is fixedly matched with a fixed cylinder thereof; the cold runner comprises a cold nozzle protective sleeve, a cold nozzle body, a cold nozzle core, a heat insulation cap and a valve needle, the heat insulation cap is sleeved on the cold nozzle core and is fixedly matched with the cold nozzle body, and the cold nozzle protective sleeve is sleeved on the cold nozzle body; the fixed cylinder comprises a cylinder flange, a main injection nozzle, a pressing block, an upper supporting plate, a cylinder body, a piston, a valve needle sleeve and a cylinder base; the piston is fixed with one end of a big end of the valve needle, the valve needle penetrates through the center of the cylinder body of the air cylinder and the center of the cold runner and is matched with the cold nozzle core, the cylinder body of the air cylinder is matched with the piston through a sealing ring, an upper supporting plate is matched with the cylinder body of the air cylinder and the piston through the sealing ring, a cylinder flange is sleeved outside the main injection nozzle, the cylinder flange is fixed with the cylinder body of the air cylinder, a valve needle sleeve is arranged on a cylinder base, and the valve needle sleeve. The utility model has the advantages of reasonable design, parts machining is simple, can control the temperature of material mouthful department more rationally.
Description
Technical Field
The utility model relates to a cold runner technical field among the injection moulding device, concretely relates to single-point needle valve formula cold nozzle.
Background
With the wide application of silica gel products in the industries of daily chemical industry, medical treatment, electronics, automobiles and the like, in order to realize the high-efficiency, high-quality and low-cost production of the silica gel processing industry, the liquid silica gel injection molding technology is rapidly developed.
At present, the price of the silica gel raw material is relatively high, and the silica gel can not be recycled after being cured, so that in order to reduce the waste of material and labor cost, the proportion of the amount of the glue in the runner system is larger, and the cold runner system of the liquid silica gel injection mold is relatively more applied to a small product mold. The application of the single-cavity structure mold limited by the product structure is few, so a novel cold runner system is urgently needed to fill the market.
To sum up, the utility model designs a single-point needle valve formula cold mouth.
SUMMERY OF THE UTILITY MODEL
To the not enough of existence on the prior art, the utility model aims at providing a single-point needle valve formula cold mouth, structural design is reasonable, and parts machining is simple, the temperature of control feed inlet department that can be more reasonable. The non-runner injection molding of the silica gel product is realized, and the application range of the liquid silica gel injection mold is wider.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the single-point needle valve type cold nozzle comprises a cold runner and a fixed cylinder, wherein the cold runner is fixedly matched with the fixed cylinder; the cold runner comprises a cold nozzle protective sleeve, a cold nozzle body, a cold nozzle core, a heat insulation cap and a valve needle, the heat insulation cap is sleeved on the cold nozzle core, the cold nozzle core is fixedly matched with the cold nozzle body, and the cold nozzle body is sleeved with the cold nozzle protective sleeve; the fixed cylinder comprises a cylinder flange, a main injection nozzle, a pressing block, an upper supporting plate, a cylinder body, a piston, a valve needle sleeve and a cylinder base; the piston is fixed with one end of a big end of the valve needle, the valve needle penetrates through the center of the cylinder body of the air cylinder and the center of the cold runner and is matched with the cold nozzle core, the cylinder body of the air cylinder is matched with the piston through a sealing ring, an upper supporting plate is matched with the cylinder body of the air cylinder and the piston through the sealing ring, a cylinder flange is sleeved outside the main injection nozzle, the cylinder flange is fixed with the cylinder body of the air cylinder, a valve needle sleeve is arranged on a cylinder base, and the valve needle sleeve.
Preferably, one end of the main nozzle is provided with a main hole, the other end of the main nozzle is provided with a herringbone supporting hole, and a sealing ring is arranged at the joint of the outer side of the supporting hole flow channel and the cylinder base.
Preferably, the cylinder base is provided with two cooling channels for inflow and outflow, cooling water enters through the cylinder base inflow channel, flows into the spiral groove of the cold nozzle body through the cold nozzle protective sleeve, enters the cold nozzle protective sleeve through the spiral groove on the other side of the cold nozzle body, and flows out through the cylinder base outflow channel.
Preferably, the cold nozzle protective sleeve is sleeved on the outer side of the cold nozzle body, the large-diameter end of the cold nozzle protective sleeve is combined with the cold nozzle body in a welding mode, and the small-diameter end of the cold nozzle protective sleeve is matched with the cold nozzle body through a sealing ring.
Preferably, a Y-shaped sealing ring is arranged between the valve needle and the valve needle sleeve to prevent the silica gel from flowing out.
Preferably, the heat insulation cap is an SPE heat insulation cap.
The utility model discloses following beneficial effect has:
1. the single-point needle valve type cold nozzle adopts a double-spiral water channel design, so that a high-efficiency cooling effect can be provided;
2. all the sealing rings are made of high-temperature-resistant materials, so that the service life of the sealing rings in a working state is ensured;
3. the valve needle passes through the center of the cylinder body of the air cylinder and the center of the flow channel and is matched with the cold nozzle core of the mold, so that the glue inlet center and the injection center are coaxial, the transverse acting force of the valve needle on the gate and the inner wall of the mold when the piston in the air cylinder drives the valve needle to move is avoided, and the valve needle is more stable in operation.
4. The single-point valve needle type cold nozzle is simple in structure, easy in part machining and capable of controlling the temperature at a material port more reasonably.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a perspective view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is a schematic structural view of the cold runner of the present invention;
FIG. 4 is a schematic structural view of the main nozzle of the present invention;
fig. 5 is a schematic structural view of the piston of the present invention;
fig. 6 is a schematic structural view of the cold nozzle body of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1 to 6, the following technical solutions are adopted in the present embodiment: the single-point needle valve type cold nozzle comprises a cold runner 2 and a fixed cylinder 1, wherein the cold runner 2 is fixedly matched with the fixed cylinder 1; the cold runner 2 comprises a cold nozzle protective sleeve 21, a cold nozzle body 22, a cold nozzle core 23, a heat insulation cap 24 and a valve needle 25, wherein the heat insulation cap 24 is sleeved on the cold nozzle core 23, the cold nozzle core 23 is fixedly matched with the cold nozzle body 22, and the cold nozzle protective sleeve 21 is sleeved on the cold nozzle body 22; the fixed cylinder 1 comprises a cylinder flange 11, a main injection nozzle 12, a pressing block 13, an upper supporting plate 14, a cylinder body 15, a piston 16 and a valve needle sleeve 17, and the cylinder base 18 is arranged on the cylinder body; the piston 16 is fixed with the big head end of the valve needle 25, the valve needle 25 penetrates through the center of the cylinder body 15 and the center of the cold runner 2 and is matched with the cold nozzle core 23, a sealing ring is arranged between the cylinder body 15 and the piston 16, the upper supporting plate 14 is matched with the cylinder body 15 and the piston 16 through the sealing ring, the main nozzle 12 is sleeved with a cylinder flange 11, the cylinder flange 11 is fixed with the cylinder body 15, the cylinder base 18 is provided with a valve needle sleeve 17, and the valve needle sleeve 17 is sleeved on the valve needle 25.
It is worth noting that one end of the main nozzle 12 is provided with a main hole, the other end is provided with a herringbone supporting hole, and a sealing ring is arranged at the joint of the outer side of the supporting hole flow passage and the cylinder base 18.
It is worth noting that the cylinder base 18 is provided with two cooling channels for inflow and outflow, cooling water enters through the inflow channel of the cylinder base 18, flows into the spiral groove of the cold nozzle body 22 through the cold nozzle protective sleeve 21, enters the cold nozzle protective sleeve 21 through the spiral groove on the other side, and flows out through the outflow channel of the cylinder base 18.
It is worth noting that the cold nozzle protection sleeve 21 is arranged on the outer side of the cold nozzle body 22, the large-diameter end of the cold nozzle protection sleeve 21 is combined with the cold nozzle body 22 in a welding mode, and the small-diameter end of the cold nozzle protection sleeve 21 is matched with the cold nozzle body 22 through a sealing ring.
In addition, the thermal insulation cap 24 adopts an SPE thermal insulation cap.
This embodiment single-point needle valve formula cold mouth adopts the design of double helix water route, can provide high-efficient cooling effect, at whole injection moulding in-process for silica gel keeps being less than solidification temperature and the state that can flow in the runner, when the product drawing of patterns, makes the sizing material in the system runner still keep the liquid state, realizes the continuous injection moulding of mould, forms the processing state of basically not abandoning the sizing material. And the head of the single-point needle valve type cold nozzle is provided with a heat insulation cap to prevent the excessive temperature of the die from being transferred to the cold nozzle, so that the sizing material in the cold nozzle is solidified, and the temperature of the nozzle head can be controlled within 60 degrees through the mode. And the mould is provided with a heating accessory, so that the mould cavity is in a heating state, the cold and hot control is separated, the adjustment range of injection process parameters is enlarged, the product curing time is shortened, and the injection molding period is prolonged.
All the sealing rings of the embodiment are made of high-temperature-resistant materials, so that the service life of the sealing rings in the working state is ensured. Valve needle and needle cover adopt the material tolerance cooperation that hardness is high, have better antifriction, can lead positive valve needle vertical motion when guaranteeing to seal the glue, avoid the unilateral friction needle cover of valve needle and the easy phenomenon of locking of valve needle, simultaneously flow very well because of silica gel, so be equipped with Y type sealing washer between valve needle and valve needle cover, prevent that the sizing material from spilling over.
The valve needle of the specific embodiment passes through the center of the cylinder body of the air cylinder and the center of the flow channel and is matched with the cold nozzle core, so that the glue inlet center and the injection center are coaxial, the transverse acting force of the valve needle on the gate and the inner wall of the mold when the piston in the air cylinder drives the valve needle to move is avoided, and the valve needle is more stable in operation.
The single-point valve needle type cold nozzle of the embodiment has the advantages of simple structure, easy part processing and more reasonable control of the temperature at the material port. Realizes the runner-free injection molding of the silica gel product, leads the application range of the liquid silica gel injection mold to be wider,
the basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The single-point needle valve type cold nozzle is characterized by comprising a cold runner (2) and a fixed cylinder (1), wherein the cold runner (2) is fixedly matched with the fixed cylinder (1); the cold runner (2) comprises a cold nozzle protective sleeve (21), a cold nozzle body (22), a cold nozzle core (23), a heat insulation cap (24) and a valve needle (25), wherein the heat insulation cap (24) is sleeved on the cold nozzle core (23), the cold nozzle core (23) is fixedly matched with the cold nozzle body (22), and the cold nozzle protective sleeve (21) is sleeved on the cold nozzle body (22); the fixed cylinder (1) comprises a cylinder flange (11), a main nozzle (12), a pressing block (13), an upper supporting plate (14), a cylinder body (15), a piston (16), a valve needle sleeve (17) and a cylinder base (18); piston (16) fixed with needle (25) major part one end, needle (25) pass cylinder body (15) center and cold runner (2) center, and with cold mouth core (23) cooperation, cylinder body (15) cooperate through sealing washer and piston (16), go up backup pad (14) and pass through sealing washer and cylinder body (15) and piston (16) cooperation, it has cylinder flange (11) to mainly penetrate mouth (12) overcoat, cylinder flange (11) are fixed with cylinder body (15), cylinder base (18) are equipped with valve needle cover (17), valve needle cover (17) cover is established on needle (25).
2. The single-point needle valve type cold nozzle as claimed in claim 1, wherein the main nozzle (12) is provided with a main hole at one end and a herringbone branch hole at the other end, and a sealing ring is arranged at the joint of the outer side of the branch hole flow passage and the cylinder base (18).
3. The single-point needle valve type cold nozzle as claimed in claim 1, wherein the cylinder base (18) is provided with an inflow channel and an outflow channel, and cooling water enters through the cylinder base inflow channel, flows into the spiral groove of the cold nozzle body (22) through the cold nozzle protection sleeve, enters the cold nozzle protection sleeve (21) through the spiral groove on the other side, and flows out through the cylinder base outflow channel.
4. The single-point needle valve type cold nozzle as claimed in claim 1, wherein the cold nozzle protective sleeve (21) is arranged outside the cold nozzle body (22), the large diameter end of the cold nozzle protective sleeve (21) is welded with the cold nozzle body (22), and the small diameter end of the cold nozzle protective sleeve (21) is matched with the cold nozzle body (22) through a sealing ring.
5. The single-point needle valve cold nozzle as claimed in claim 1, wherein said cold nozzle body (22) is designed with a double spiral waterway.
6. The single-point needle valve cold nozzle as defined in claim 1, wherein said thermal insulating cap (24) is a low thermal conductivity SPE thermal insulating cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920802413.XU CN210211225U (en) | 2019-05-30 | 2019-05-30 | Single point needle valve type cold nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920802413.XU CN210211225U (en) | 2019-05-30 | 2019-05-30 | Single point needle valve type cold nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN210211225U true CN210211225U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920802413.XU Active CN210211225U (en) | 2019-05-30 | 2019-05-30 | Single point needle valve type cold nozzle |
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| CN (1) | CN210211225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320099A (en) * | 2021-07-07 | 2021-08-31 | 广东柳道热流道系统有限公司 | Anti-leakage single valve nozzle |
-
2019
- 2019-05-30 CN CN201920802413.XU patent/CN210211225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320099A (en) * | 2021-07-07 | 2021-08-31 | 广东柳道热流道系统有限公司 | Anti-leakage single valve nozzle |
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