CN117183238A - Cold runner self-sealing main nozzle and use method thereof - Google Patents
Cold runner self-sealing main nozzle and use method thereof Download PDFInfo
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- CN117183238A CN117183238A CN202311208342.8A CN202311208342A CN117183238A CN 117183238 A CN117183238 A CN 117183238A CN 202311208342 A CN202311208342 A CN 202311208342A CN 117183238 A CN117183238 A CN 117183238A
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- 238000007789 sealing Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001746 injection moulding Methods 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000001739 rebound effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application relates to the technical field of rubber and plastic injection molding, in particular to a cold runner self-sealing type main nozzle and a use method thereof.
Description
Technical Field
The application relates to the technical field of rubber and plastic injection molding, in particular to a cold runner self-sealing main nozzle and a use method thereof.
Background
The cold runner system belongs to a fitting on a rubber injection mold, has the advantages of easy use, capability of meeting the appearance requirement of certain products, main nozzle is a component part of the cold runner system, during injection molding, a gun nozzle of an injection molding machine is abutted to a discharge port of the main nozzle, and the discharge port of the main nozzle is abutted to a cold runner system and another component part of a cold runner plate, and the defects of the main nozzle in the prior art are that after injection molding is finished, the gun nozzle of the injection molding machine is separated from the main nozzle, the main nozzle overflows from raw materials, the cold runner plate and the pressure loss inside the mold, the product reject ratio is high, and the production cost is increased.
Disclosure of Invention
In order to solve the problems of the prior art that after a gun nozzle and a main nozzle of an injection molding machine are separated, the main nozzle overflows rubber raw materials, the pressure in a cold flow plate and a mold is lost, the reject ratio of products is high, and the production cost is increased, the application provides a cold flow passage self-sealing main nozzle and a use method thereof.
The application provides a cold runner self-sealing main nozzle, which adopts the following technical scheme:
the utility model provides a cold runner self-sealing type main nozzle, includes main part, movable core, interior sleeve pipe, pressure cap, spring, interior sleeve pipe set up in the main part and run through the main part, interior sleeve pipe hole divide into upper strata hole and lower floor's hole, the aperture in upper strata hole is greater than the aperture in lower floor's hole, be equipped with runner and its tip lateral wall in the movable core be provided with the discharge gate of runner intercommunication, the movable core external diameter equals the aperture in lower floor's hole, the movable core wear to locate interior sleeve pipe hole just the discharge gate is located the lower floor's hole seals, the movable core keep away from the one end of discharge gate with the pressure cap is connected and is used for docking the big gun nozzle of injection molding machine, and through big gun nozzle effect movable core activity, the discharge gate is located the upper strata hole, spring one end connect in the main part outer wall, the other end is connected the pressure cap, returns to lower floor's hole through spring rebound effect movable core and seals the discharge gate.
Preferably, sealing rings are arranged between the two ends of the inner sleeve and the main body to form a sealed space for circulating hot oil or hot water, and the main body is provided with an oil inlet connector for connecting an output end of an external oil temperature machine to guide oil into the sealed space and an oil outlet connector for connecting an extraction end of the external oil temperature machine to circulate the hot oil in the sealed space to a molding temperature required by rubber or plastic.
Preferably, the oil inlet joint is connected with the oil outlet joint in a butt joint mode, and the oil outlet joint is connected with the oil outlet joint through a sealing ring.
Preferably, the press cap comprises a fixed disc, a nut and a bolt, wherein the movable core penetrates through the fixed disc, the side wall of the end portion of the movable core is fixedly connected with the fixed disc, the spring is connected with the fixed disc, the nut is fixed on the fixed disc and is aligned with the movable core, the bolt is in threaded connection with the nut, a hemispherical groove is formed in the end face of the bolt, and a feeding hole communicated with the flow passage is formed in the middle of the hemispherical groove corresponding to the bolt.
Preferably, the main body is provided with a threaded hole and is fixed on the cold flow plate through screws.
On the other hand, the application provides a use method of the cold runner self-sealing main nozzle, which adopts the following technical scheme:
the application method of the cold runner self-sealing main nozzle comprises the following steps:
step S1, introducing oil, wherein an oil temperature machine conveys the hot oil into the closed space to heat the inner sleeve, and simultaneously extracts the hot oil out of the closed space, and the hot oil circulates to ensure the temperature of the hot oil in the closed space;
s2, feeding, namely pushing the press cap by a gun nozzle of the injection molding machine, jacking and moving the movable core, moving the part of the discharge hole of the movable core from the lower hole to the upper hole, injecting raw materials into the movable core from the press cap by the injection molding machine, and injecting the raw materials into the cold flow plate from the discharge hole;
and S3, locking pressure, namely, after injection is finished, enabling a gun nozzle of the injection molding machine to leave, rebounding through a spring, retracting a part of a discharge hole arranged on the movable core to a lower layer hole to be closed, and locking the cold flow plate and the pressure in the mold.
In summary, the beneficial technical effects of the application are as follows:
1. the gun nozzle of the injection molding machine pushes the pressing cap, so that the movable core moves, the part of the discharge hole of the movable core moves to the upper layer hole of the inner sleeve, unlocking and sealing are carried out, the injection molding machine injects raw materials into the movable core and shoots the cold flow plate from the discharge hole to realize injection molding, the part of the discharge hole of the spring rebound movable core retracts to the lower layer hole of the inner sleeve to be sealed again, the pressure in the raw materials, the cold flow plate and the mold is locked, the reject ratio of products is reduced, and the production cost is reduced.
2. And hot oil is introduced into the closed space to circularly heat the inner sleeve, so that the rubber raw material is not easy to cool and condense to block the movable core, the circulation is smooth, and the two diversion grooves are respectively arranged on the diversion sleeve and are respectively in butt joint with the oil inlet joint and the oil outlet joint, so that the hot oil can conveniently circularly flow.
Drawings
FIG. 1 is a schematic diagram of the whole structure of a cold runner self-sealing main nozzle of the present application.
FIG. 2 is an exploded view of a cold runner self-sealing main nozzle of the present application.
FIG. 3 is a block diagram of the steps of a method of using a cold runner self-sealing main nozzle of the present application.
Reference numerals: 1. a main body; 11. a mounting block; 111. a threaded hole; 12. an outer sleeve; 13. an oil outlet joint; 14. an oil inlet joint; 2. a movable core; 21. a discharge port; 3. an inner sleeve; 4. pressing the cap; 41. a fixed plate; 42. a nut; 43. a bolt; 431. hemispherical grooves; 432. a feed hole; 5. a spring; 6. a seal ring; 61. a seal ring; 7. a diversion sleeve; 71. and a diversion trench.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The application provides a cold runner self-sealing type main nozzle, which comprises a main body 1, a movable core 2, an inner sleeve 3, a press cap 4 and a spring 5, wherein the main body 1 comprises a mounting block 11 and an outer sleeve 12, one end of the outer sleeve 12 is fixedly connected with the surface of the mounting block 11, the mounting plate is provided with an opening communicated with the inner hole of the outer sleeve 12 in a butt joint way, the inner sleeve 3 penetrates through the inner hole of the outer sleeve 12 and the opening arranged on the mounting block 11, a sealing ring 6 is arranged between the inner sleeve 3 and one end of the outer sleeve 12 far away from the mounting block 11 and between the top of the mounting block 11 and surrounds the inner sleeve 3 and the outer sleeve 12 to form a closed space for containing hot oil, the sealing ring 6 is provided with an annular groove and is provided with a sealing ring 61 in the annular groove, the inner hole of the inner sleeve 3 is divided into an upper layer hole and a lower layer hole, the aperture of the upper layer hole is larger than the aperture of the lower layer hole, the upper layer hole corresponds to the position of the mounting block 11, the movable core 2 moves in the inner sleeve 3, the outer diameter of the lower layer hole is equal to the aperture of the upper layer hole, a runner is arranged in the movable core 2, a plurality of discharge holes 21 communicated with the runner are arranged on the side wall of one end of the movable core 2, one end of the movable core 4 is arranged in a ring, one end of the movable core 21, one end is far away from the runner is connected with the press cap 4 and is positioned at one end of the press cap 4 is far from the outer sleeve 11 and is in a state of the end of the spring 5, and is positioned at the end of the sealing cap 4 is in a state far from the sealing cap 5 is connected with the upper end of the upper layer 4 and is in a state is positioned at the end of the upper end of the sealing cap 11.
Further, a diversion sleeve 7 is arranged between the outer sleeve 12 and the inner sleeve 3, one end of the diversion sleeve 7 is fixedly connected with the sealing ring 6 between the mounting block 11 and the inner sleeve 3, two diversion trenches 71 extending along the length direction of the diversion sleeve 7 are formed in the diversion sleeve 7, a gap is formed between the other end of the diversion sleeve 7 and the other sealing ring 6 for heat supply oil circulation, an oil inlet joint 14 and an oil outlet joint 13 are arranged on the side wall of the mounting block 11, the oil inlet joint 14 is used for connecting the output end of an external oil temperature machine and is abutted to one diversion trench 71, the oil outlet joint 13 is used for connecting the extraction end of the external oil temperature machine and is abutted to the other diversion trench 71, and the temperature in the inner sleeve 3 is kept by heat circulation.
Further, the press cap 4 comprises a fixed disc 41, a nut 42 and a bolt 43, the movable core 2 penetrates through the disc 41, the side wall of the end portion of the movable core is fixedly connected with the disc 41, the spring 5 is connected with the disc 41, the nut 42 is fixed on the disc 41 and is in threaded connection with the movable core 2, the bolt 43 is in threaded connection with the nut 42, a hemispherical groove 431 which is convenient to butt joint with a gun nozzle of an injection molding machine is formed in the end face of the bolt 43, a feeding hole 432 which is communicated with a runner is formed in the middle of the hemispherical groove 431 corresponding to the bolt 43, and raw materials are conveniently injected into the runner of the movable core 2 by the injection molding machine.
Further, screw holes 111 are provided at four corners of the mounting block 11 and fixed to the cold flow plate by screws.
The utility model provides a practical method of a cold runner self-sealing main nozzle aiming at the main nozzle, which comprises the following steps:
and S1, introducing oil, and conveying the hot oil into the closed space by an oil temperature machine to heat the inner sleeve, and simultaneously extracting the hot oil out of the closed space, wherein the hot oil circulates to ensure the temperature of the hot oil in the closed space.
Step S2, feeding, pushing and pressing the cap 4 by the gun nozzle top of the injection molding machine, jacking and moving the movable core 2, moving the part of the discharge hole 21 arranged on the movable core 2 from the lower layer hole in the inner sleeve 3 to the upper layer hole, injecting raw materials into the movable core 2 from the cap 4 by the injection molding machine, and injecting the raw materials into the cold flow plate from the discharge hole 21.
And S3, locking pressure, namely, after injection is finished, enabling a gun nozzle of the injection molding machine to leave, rebounding through a spring 5, retracting a part of a discharge hole 21 arranged on the movable core 2 to a lower layer hole in the inner sleeve 3 to be closed, and locking the pressure in the cold flow plate and the mold.
Thus, the injection molding operation is finished for one time, the product yield is high, and the production cost is reduced.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A cold runner self-sealing type main nozzle is characterized in that: including main part, activity core, interior sleeve pipe, press cap, spring, interior sleeve pipe set up in the main part and run through the main part, interior sleeve pipe hole divide into upper hole and lower floor's hole, the aperture in upper hole is greater than the aperture in lower floor's hole, be equipped with the runner in the activity core and its tip lateral wall be provided with the discharge gate of runner intercommunication, activity core external diameter equals the aperture in lower floor's hole, the activity core wear to locate interior sleeve pipe hole just the discharge gate is located the lower floor's hole seals, the activity core keep away from the one end of discharge gate with press cap is connected and is used for docking the big gun mouth of injection molding machine, and through big gun mouth effect activity core activity, the discharge gate is located the upper hole, spring one end connect in main part outer wall, the other end is connected press cap, rebound effect activity core through the spring returns to lower floor's hole and seals the discharge gate.
2. A cold runner self-sealing main nozzle as claimed in claim 1, wherein: sealing rings are arranged between the two ends of the inner sleeve and the main body to form a sealed space for circulating hot oil or hot water, and the main body is provided with an oil inlet connector for connecting an output end of an external oil temperature machine to guide oil into the sealed space and an oil outlet connector for connecting an extraction end of the external oil temperature machine to circulate the hot oil in the sealed space to a molding temperature required by rubber or plastic.
3. A cold runner self-sealing main nozzle as claimed in claim 2, wherein: the oil inlet joint is in butt joint with one guide groove, and the oil outlet joint is in butt joint with the other guide groove.
4. A cold runner self-sealing main nozzle as claimed in claim 1, wherein: the pressing cap comprises a fixed disc, a nut and a bolt, wherein the movable core penetrates through the fixed disc, the side wall of the end portion of the movable core is fixedly connected with the fixed disc, the spring is connected with the fixed disc, the nut is fixed on the fixed disc and is aligned with the movable core, the bolt is in threaded connection with the nut, a hemispherical groove is formed in the end face of the bolt, and a feeding hole which is communicated with the flow passage is formed in the middle of the hemispherical groove and corresponds to the bolt.
5. A cold runner self-sealing main nozzle as claimed in claim 1, wherein: the main body is provided with a threaded hole and is fixed on the cold flow plate through screws.
6. The application method of the cold runner self-sealing main nozzle is characterized by comprising the following steps of:
step S1, introducing oil, wherein an oil temperature machine conveys the hot oil into the closed space to heat the inner sleeve, and simultaneously extracts the hot oil out of the closed space, and the hot oil circulates to ensure the temperature of the hot oil in the closed space;
s2, feeding, namely pushing the press cap by a gun nozzle of the injection molding machine, jacking and moving the movable core, moving the part of the discharge hole of the movable core from the lower hole to the upper hole, injecting raw materials into the movable core from the press cap by the injection molding machine, and injecting the raw materials into the cold flow plate from the discharge hole;
and S3, locking pressure, namely, after injection is finished, enabling a gun nozzle of the injection molding machine to leave, rebounding through a spring, retracting a part of a discharge hole arranged on the movable core to a lower layer hole to be closed, and locking the cold flow plate and the pressure in the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311208342.8A CN117183238A (en) | 2023-09-19 | 2023-09-19 | Cold runner self-sealing main nozzle and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311208342.8A CN117183238A (en) | 2023-09-19 | 2023-09-19 | Cold runner self-sealing main nozzle and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117183238A true CN117183238A (en) | 2023-12-08 |
Family
ID=88994013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311208342.8A Pending CN117183238A (en) | 2023-09-19 | 2023-09-19 | Cold runner self-sealing main nozzle and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117183238A (en) |
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2023
- 2023-09-19 CN CN202311208342.8A patent/CN117183238A/en active Pending
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