CN219028279U - Injection nozzle of injection molding machine - Google Patents
Injection nozzle of injection molding machine Download PDFInfo
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- CN219028279U CN219028279U CN202223348529.1U CN202223348529U CN219028279U CN 219028279 U CN219028279 U CN 219028279U CN 202223348529 U CN202223348529 U CN 202223348529U CN 219028279 U CN219028279 U CN 219028279U
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- injection nozzle
- injection
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- hole
- middle joint
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Abstract
The utility model discloses an injection nozzle of an injection molding machine, which comprises an injection nozzle cap, an ejector pin, an injection nozzle middle joint, a spring compression bar, a pressure spring and an injection nozzle body, wherein the two ends of the injection nozzle middle joint are in threaded connection with the injection nozzle cap and the injection nozzle body, the injection nozzle body is externally connected with a screw material pipe through threads, an injection through hole is formed in the end part of the injection nozzle cap, a spring compression bar mounting chute is radially formed in the middle part of the injection nozzle middle joint, the spring compression bar is inserted in the spring compression bar mounting chute, the injection nozzle body is sleeved with the pressure spring propped against the spring compression bar, an ejector pin mounting inner hole communicated with the spring compression bar mounting chute is axially formed in the front end of the injection nozzle middle joint, and the ejector pin capable of blocking the injection through hole is arranged in the ejector pin mounting inner hole; the nozzle middle joint is axially far from the center and is symmetrically provided with a plurality of plastic through holes. Through the mode, the automatic mixing device is simple in structure, can automatically filter unmelted plastic particles and impurities, can extrude and exhaust, is smooth in feeding and uniform in flow speed, and can achieve the effect of uniform mixing.
Description
Technical Field
The utility model relates to the technical field of injection molding machines, in particular to an injection nozzle of an injection molding machine.
Background
At present, the nozzle of the existing injection molding machine melts raw materials in the injection molding process, and then injection molding production is carried out on molten plastic melt, in the actual production process, some unmelted plastic which is difficult to avoid exists, is granular, can influence the quality of injection molding products by directly injecting into a mold, impurities exist in the plastic melt, and the existing nozzle is provided with no filter equipment, and the nozzle radius of the nozzle is narrow, so that the nozzle is easy to be blocked by the impurities in the plastic melt when the plastic melt is injected through the nozzle, the production efficiency is greatly reduced, and frequent cleaning is also required.
In the extrusion feeding process, the plastic melt is likely to generate tiny bubbles, so that bubbles or bulges are directly formed on injection molding products, the requirements of the precision injection molding products on the aspects are relatively high, and the common nozzle is difficult to meet the requirements of the precision injection molding production.
Based on the defects and shortcomings, the prior art needs to be improved, and an injection nozzle of an injection molding machine is designed.
Disclosure of Invention
The injection nozzle of the injection molding machine has the advantages that the injection nozzle is ingenious in design, can automatically filter unmelted plastic particles and impurities, can extrude and exhaust, is smooth in feeding and uniform in flow speed, can play a role in mixing uniformly, and is suitable for forming precise plastic parts.
In order to solve the technical problems, the utility model adopts a technical scheme that: the injection nozzle of the injection molding machine comprises a nozzle cap, a thimble, a nozzle middle joint, a spring compression bar, a pressure spring and a nozzle body, wherein external threads are arranged at two ends of the nozzle middle joint, the nozzle cap and the nozzle body are connected with each other through threads, the nozzle body is externally connected with a screw pipe through threads, the nozzle cap and the nozzle body are of an inner hollow structure, a glue injection through hole is formed in the end part of the nozzle cap, a spring compression bar mounting chute is radially arranged in the middle of the nozzle middle joint, the spring compression bar is inserted in the spring compression bar mounting chute, a pressure spring propped against the spring compression bar is sleeved on the nozzle body, a thimble mounting inner hole communicated with the spring compression bar mounting chute is axially arranged at the front end of the nozzle middle joint, and a thimble capable of blocking the glue injection through hole is arranged in the thimble mounting inner hole; the nozzle middle joint is axially far from the center and is symmetrically provided with a plurality of plastic through holes.
Preferably, the nozzle cap is axially provided with a glue injection through hole, a conical hole, a threaded hole and a nozzle middle joint butt joint hole in sequence.
Preferably, the nozzle body is axially and sequentially provided with a feed inlet, a second threaded hole and a second nozzle middle joint butt joint hole, and the feed inlet is gradually shortened along the aperture of the conveying direction.
Preferably, one end of the nozzle middle joint, which is close to the nozzle body, is provided with a cone part in an extending way, so that the plastic output from the nozzle body can be uniformly conveyed to each plastic through hole.
Compared with the prior art, the utility model has the beneficial effects that:
six plastic through holes have small pore diameters, and play a role in filtering unmelted particles and impurities in the plastic;
the symmetrical plastic through holes can play a role in mixing materials in the feeding process, and the plastic flow rate is uniform and the feeding is smooth;
before the cap of the nozzle ejects the glue, the pressure spring force props against the thimble through the spring pressing rod, the thimble blocks the glue ejecting through hole, the liquid plastic obtains larger pressure at the moment, the extrusion exhaust is carried out, the pressure reaches a set value, the spring pressing rod is pushed reversely, the thimble is loosened, and the glue ejecting through hole ejects the glue.
Drawings
FIG. 1 is a schematic view of a nozzle of an injection molding machine.
FIG. 2 is a schematic view showing an unfolding structure of an injection nozzle of an injection molding machine.
Fig. 3 is a cross-sectional view of an injection nozzle of an injection molding machine.
Fig. 4 is a partial cross-sectional view of an injection nozzle of an injection molding machine.
FIG. 5 is a schematic view of a middle nozzle section of an injection nozzle of an injection molding machine.
The nozzle comprises a nozzle cap (1), a nozzle cap (11), a glue injection through hole (12), a conical hole (13), a threaded hole (14) and a nozzle middle joint butt joint hole; 2. a thimble; 3. the middle joint of the nozzle, 31, a plastic through hole, 32, an ejector pin mounting inner hole, 33, a spring compression bar mounting chute, 30 and a cone part; 4. a spring compression bar; 5. a pressure spring; 6. the nozzle body, 61 feed inlet, 62, second screw hole, 63, second nozzle middle joint butt joint hole.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1 to 5, an embodiment of the present utility model includes:
the injection nozzle of the injection molding machine comprises a nozzle cap 1, a thimble 2, a nozzle middle joint 3, a spring compression rod 4, a pressure spring 5 and a nozzle body 6, wherein external threads are arranged at two ends of the nozzle middle joint 3, the nozzle cap 1 and the nozzle body 6 are connected with the two ends of the nozzle middle joint 3 through threads, the nozzle body 6 is externally connected with a screw pipe (not shown in the figure) through threads, the nozzle cap 1 and the nozzle body 6 are of hollow structures, the end part of the nozzle cap 1 is provided with a glue injection through hole 11, the middle part of the nozzle middle joint 3 is radially provided with a spring compression rod mounting chute 33, the spring compression rod 4 is inserted at the position of the spring compression rod mounting chute 33, the pressure spring 5 propped against the spring compression rod 4 is sleeved on the nozzle body 6, a thimble mounting inner hole 32 which is communicated with the spring compression rod mounting chute 33 is axially arranged at the front end of the nozzle middle joint 3, and the thimble 2 which can block the glue injection through hole 11 is arranged in the thimble mounting inner hole 32; the nozzle middle section 3 is axially far away from the center position and symmetrically provided with six plastic through holes 31, the six plastic through holes 31 are small in aperture, particles and impurities which are not melted in the plastic are filtered, and the symmetrical plastic through holes 31 can play a role in uniformly mixing materials in the feeding process, and the plastic flow velocity is uniform and the feeding is smooth.
The nozzle cap 1 is axially and sequentially provided with a glue injection through hole 11, a conical hole 12, a threaded hole 13 and a nozzle middle joint butt joint hole 14, the glue injection through hole 11 is used for injecting glue, the head of the thimble 2 is inserted into the conical hole 12, and the threaded hole 13 is used for being in threaded connection with the nozzle middle joint 3.
The nozzle body 6 is axially and sequentially provided with a feed inlet 61, a second threaded hole 62 and a second nozzle middle joint butt joint hole 63, the aperture of the feed inlet 61 is gradually shortened along the conveying direction, and the plastic passing speed is improved.
One end of the nozzle middle section 3, which is close to the nozzle body 6, is provided with a cone part 30 in an extending way, so that plastic output from the nozzle body 6 can be uniformly conveyed to all plastic through holes 31.
When the injection nozzle of the injection molding machine works, high-temperature molten plastic is extruded into the inner cavity of the injection nozzle body 6 and enters the inner cavity of the injection nozzle cap 1 through the plastic through hole 31 of the injection nozzle middle joint 3 to form a space with the thimble 2, the space is gathered in the conical hole 12 area, the extrusion exhaust can be realized in the process, when the pressure is gathered to a set value, the pressure pushes the spring pressing rod 4 back, so that the liquid plastic obtains higher pressure at the moment, the thimble 2 is loosened, the high-temperature molten plastic is injected into a mold through the injection through hole 11 at the end part of the injection nozzle cap 1, an injection molding process is completed, and then the return stroke enters the next injection molding process.
The injection nozzle of the injection molding machine has ingenious design, can automatically filter unmelted plastic particles and impurities, can extrude and exhaust, has smooth feeding and uniform flow velocity, can play a role in mixing, and is suitable for molding precise plastic parts.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (4)
1. An injection nozzle of an injection molding machine is characterized in that: the injection nozzle of the injection molding machine comprises an injection nozzle cap, an ejector pin, an injection nozzle middle joint, a spring compression bar, a pressure spring and an injection nozzle body, wherein external threads are arranged at two ends of the injection nozzle middle joint, the injection nozzle cap and the injection nozzle body are connected with the threads at two ends of the injection nozzle middle joint, the injection nozzle body is externally connected with a screw pipe through threads, the injection nozzle cap and the injection nozzle body are of hollow structures, the end part of the injection nozzle cap is provided with an injection through hole, the middle part of the injection nozzle middle joint is radially provided with a spring compression bar installation chute, the spring compression bar is inserted into the spring compression bar installation chute, the injection nozzle body is sleeved with a pressure spring propped against the spring compression bar, the front end of the injection nozzle middle joint is axially provided with an ejector pin installation inner hole communicated with the spring compression bar installation chute, and the ejector pin capable of blocking the injection through hole is arranged in the ejector pin installation inner hole; the nozzle middle joint is axially far from the center and is symmetrically provided with a plurality of plastic through holes.
2. An injection molding machine nozzle as defined in claim 1, wherein: the nozzle cap is axially and sequentially provided with a glue injection through hole, a conical hole, a threaded hole and a nozzle middle joint butt joint hole.
3. An injection molding machine nozzle as defined in claim 1, wherein: the nozzle body is axially and sequentially provided with a feed inlet, a second threaded hole and a second nozzle middle joint butt joint hole, and the aperture of the feed inlet is gradually shortened along the conveying direction.
4. An injection molding machine nozzle as defined in claim 1, wherein: one end of the nozzle middle joint, which is close to the nozzle body, extends outwards and is provided with a cone part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223348529.1U CN219028279U (en) | 2022-12-13 | 2022-12-13 | Injection nozzle of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223348529.1U CN219028279U (en) | 2022-12-13 | 2022-12-13 | Injection nozzle of injection molding machine |
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| Publication Number | Publication Date |
|---|---|
| CN219028279U true CN219028279U (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223348529.1U Active CN219028279U (en) | 2022-12-13 | 2022-12-13 | Injection nozzle of injection molding machine |
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| CN (1) | CN219028279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117087096A (en) * | 2023-08-26 | 2023-11-21 | 青岛佳友模具科技有限公司 | Vertical injection molding device for injection mold |
-
2022
- 2022-12-13 CN CN202223348529.1U patent/CN219028279U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117087096A (en) * | 2023-08-26 | 2023-11-21 | 青岛佳友模具科技有限公司 | Vertical injection molding device for injection mold |
| CN117087096B (en) * | 2023-08-26 | 2024-03-26 | 青岛佳友模具科技有限公司 | Vertical injection molding device for injection mold |
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