CN215242566U - Anti-leakage single valve nozzle - Google Patents
Anti-leakage single valve nozzle Download PDFInfo
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- CN215242566U CN215242566U CN202121552138.4U CN202121552138U CN215242566U CN 215242566 U CN215242566 U CN 215242566U CN 202121552138 U CN202121552138 U CN 202121552138U CN 215242566 U CN215242566 U CN 215242566U
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Abstract
The utility model relates to a hot runner technical field provides a single valve of antiseep is chewed, chew the body including the cylinder body and the heat of locating cylinder body one side, the single valve is chewed and is still included: the piston is arranged in the cylinder body; the valve needle penetrates through the cylinder body and extends into the hot nozzle body, and one side of the valve needle, which is far away from the hot nozzle body, is connected with a piston; the valve needle sleeve is sleeved in the cylinder body and sleeved outside the valve needle; the sealing piece is arranged in the cylinder body and sleeved outside the valve needle, and the sealing piece is positioned on one side, far away from the piston, of the valve needle sleeve. The utility model discloses at the in-process of moulding plastics, drive the needle motion at the piston, the relative needle cover motion of needle realizes chewing this internal runner switching to heat, has set up the sealing member in the bottom of needle cover, and at the in-process of the relative needle cover motion of needle, its sealing member is used for the sizing material of separation adhesion on the needle to drop, guarantees the cleanness on needle surface, has avoided the sizing material to pass through the fit clearance seepage of needle and needle cover and has gone out, and simple structure, low cost.
Description
Technical Field
The utility model relates to a hot runner technical field, more specifically say, relate to a single valve of antiseep is chewed.
Background
Liquid silica gel is a high-fluidity plastic material, because the valve needle drives through the piston and realizes the runner switching, has the fit clearance between valve needle cover and the valve needle, and the cooperation size of valve needle and valve needle cover has strict requirement, at the in-process of moulding plastics, when the valve needle cover with the valve needle cooperation improper condition that easily appears oozing gluey.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a single valve of antiseep is chewed to solve among the prior art valve needle cover and the valve needle cooperation technical problem who oozes the glue easily.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a single valve of antiseep is chewed, include the cylinder body and locate the body is chewed to the heat of cylinder body one side, the single valve is chewed and is still included:
the piston is arranged in the cylinder body;
the valve needle penetrates through the cylinder body and extends into the hot nozzle body, and one side, far away from the hot nozzle body, of the valve needle is connected with the piston;
the valve needle sleeve is sleeved in the cylinder body and is sleeved outside the valve needle;
the sealing element is arranged in the cylinder body and sleeved outside the valve needle, and the sealing element is positioned on one side, away from the piston, of the valve needle sleeve.
According to the anti-leakage single valve nozzle, the single valve nozzle further comprises a cushion block, the cushion block is arranged in the cylinder body and sleeved outside the valve needle, the cushion block is located on one side, away from the piston, of the valve needle sleeve and abutted against the valve needle sleeve, and the sealing element is limited through the cushion block.
According to the anti-leakage single valve nozzle, the cushion block is provided with the annular groove, the cushion block is abutted against the valve needle sleeve to form a first annular cavity, and a first sealing element included by the sealing element is arranged in the first annular cavity.
According to the anti-leakage single valve nozzle, a second annular cavity is arranged between the cushion block and the inner wall of the cylinder body, and the sealing element comprises a second sealing element arranged in the second annular cavity.
According to the anti-leakage single valve nozzle, the single valve nozzle further comprises a ball guide sleeve, and the ball guide sleeve is arranged on one side, far away from the valve needle, of the piston and is connected with the piston.
According to the anti-leakage single valve nozzle, the piston comprises a piston main body and a connecting part arranged on the piston main body, and the ball guide sleeve is sleeved outside the connecting part and is connected with the connecting part.
According to the anti-leakage single valve nozzle, the single valve nozzle further comprises a cylinder cover, a first cavity is formed in one side, close to the cylinder body, of the cylinder cover, the connecting portion, provided with the ball guide sleeve in a sleeved mode, can move in the first cavity, and the ball guide sleeve is limited through a first cavity wall.
According to the anti-leakage single valve nozzle, a gasket is arranged on one side, away from the piston main body, of the ball guide sleeve, the gasket is connected with the connecting part, and the gasket is used for limiting the ball guide sleeve.
According to the anti-leakage single valve nozzle, one side of the piston, which is close to the valve needle, is provided with a second cavity, a connecting convex part is arranged in the second cavity, a connecting concave part is correspondingly arranged on the valve needle, and the connecting convex part is arranged in the connecting concave part so as to connect the valve needle to the piston.
According to the anti-leakage single valve nozzle, the single valve nozzle further comprises a pressing cap, and the valve needle sleeve is fixed in the cylinder body through the pressing cap.
The utility model provides a beneficial effect that single valve of antiseep was chewed lies in at least:
the utility model provides a single valve of antiseep is chewed, at the in-process of moulding plastics, drive the needle motion at the piston, the relative needle cover of needle moves, realize chewing this internal runner switching to heat, the sealing member has been set up in the bottom of needle cover, at the in-process of the relative needle cover motion of needle, its sealing member is used for the sizing material of separation adhesion on the needle to drop, guarantee the cleanness on needle surface, the fit clearance seepage of sizing material through needle and needle cover has been avoided going out, and simple structure, low cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of an anti-leakage single valve nozzle provided in an embodiment of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
fig. 3 is an enlarged schematic view of part B of fig. 1.
Wherein, in the figures, the respective reference numerals:
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Liquid silica gel is a high-fluidity plastic material, because the valve needle drives through the piston and realizes the runner switching, has the fit clearance between valve needle cover and the valve needle, and the cooperation size of valve needle and valve needle cover has strict requirement, at the in-process of moulding plastics, when the valve needle cover with the valve needle cooperation improper condition that easily appears oozing gluey.
Meanwhile, when the piston deflects in the reciprocating motion, the valve needle is also deflected under the influence of the piston, so that the valve needle and the valve needle sleeve are not concentric in motion, and the dynamic fit size precision is reduced to cause glue leakage.
Referring to fig. 1, the present embodiment provides an anti-leakage single valve nozzle 100, including a cylinder 20 and a hot nozzle body 10 disposed on one side of the cylinder 20, where the single valve nozzle 100 further includes: a piston 21, the piston 21 being provided in the cylinder 20; a valve needle 30, wherein the valve needle 30 penetrates through the cylinder 20 and extends into the hot nozzle body 10, and the piston 21 is connected to one side of the valve needle 30 away from the hot nozzle body 10; the valve needle sleeve 22 is arranged in the cylinder body 20, and the valve needle sleeve 22 is sleeved outside the valve needle 30; and the sealing element 23 is arranged in the cylinder body 20 and sleeved outside the valve needle 30, and the sealing element 23 is positioned on one side of the valve needle sleeve 22 far away from the piston 21.
The working principle and technical effects of the anti-leakage single valve nozzle 100 provided by the embodiment are as follows:
the single valve mouth 100 of antiseep that this embodiment provided, in the process of moulding plastics, drive the motion of needle 30 at piston 21, the relative needle cover 22 motion of needle 30, the realization is to the opening and closing of hot sprue 10 ingate, sealing member 23 has been set up in the bottom of needle cover 22, in the relative needle cover 22 motion's of needle 30 in-process, its sealing member 23 is used for the separation to adhere the sizing material on needle 30 and drops, guarantee the cleanness on needle 30 surface, the cooperation clearance seepage of sizing material through needle 30 and needle cover 22 has been avoided, and simple structure, low cost.
In one embodiment, the single valve nozzle 100 further includes a spacer 24, the spacer 24 is disposed in the cylinder 20 and sleeved outside the valve needle 30, the spacer 24 is located on a side of the valve needle sheath 22 away from the piston 21 and abuts against the valve needle sheath 22, and the sealing element 23 is limited by the spacer 24. The cushion block 24 is arranged to enable the sealing element 23 to be stably fixed below the valve needle sleeve 22 in a limiting manner, so that the rubber is prevented from leaking out through the fit clearance between the valve needle 30 and the valve needle sleeve 22.
In one embodiment, referring to fig. 2, an annular groove is formed on the spacer block 24, a first annular cavity 241 is formed after the spacer block 24 abuts against the valve needle sleeve 22, and the first sealing element 231 included in the sealing element 23 is disposed in the first annular cavity 241. The first sealing element 231 is disposed in the first annular cavity 241, so that the first sealing element 231 is stably fixed below the needle sleeve 22 to prevent the glue from leaking out through the fit gap between the needle 30 and the needle sleeve 22.
In one embodiment, a second annular cavity 242 is provided between the head block 24 and the inner wall of the cylinder 20, and the seal 23 includes a second seal 232 disposed in the second annular cavity 242. The second sealing element 232 is disposed in the second annular cavity 242, so that the second sealing element 232 is stably fixed under the needle sleeve 22 to prevent the glue from leaking out through the fit gap between the needle 30 and the needle sleeve 22.
In one embodiment, an annular groove is formed on the spacer block 24, a first annular cavity 241 is formed after the spacer block 24 abuts against the valve needle sleeve 22, and a first sealing element 231 included in the sealing element 23 is arranged in the first annular cavity 241; a second annular cavity 242 is formed between the head block 24 and the inner wall of the cylinder 20, and the sealing member 23 including the second sealing member 232 is disposed in the second annular cavity 242.
The first sealing element 231 is arranged in the first annular cavity 241, so that the first sealing element 231 can be stably fixed below the valve needle sleeve 22 in a limited manner, the second sealing element 232 is arranged in the second annular cavity 242, so that the second sealing element 232 can be stably fixed below the valve needle sleeve 22 in a limited manner, and through the combined action of the first sealing element 231 and the second sealing element 232, the glue can be better prevented from leaking out through the fit gap between the valve needle 30 and the valve needle sleeve 22.
In one embodiment, referring to fig. 1, in order to solve the technical problem that the piston is deflected during the reciprocating motion, the valve needle 30 is also deflected by the influence of the piston, so that the valve needle and the valve needle sleeve are not concentric in motion. The scheme adopted is that the single valve nozzle 100 further comprises a ball guide sleeve 25, and the ball guide sleeve 25 is arranged on one side of the valve needle 30 far away from the piston 21 and connected with the piston 21. The ball guide sleeve 25 is additionally arranged at the upper end of the piston 21, so that the motion balance of the piston 21 can be ensured, the valve needle 30 is always concentric with the valve needle sleeve 22 in the motion process, and the problem of glue leakage caused by the reduction of the matching precision in the motion process is avoided.
In one embodiment, the piston 21 includes a piston body 211 and a connecting portion 212 disposed on the piston body 211, and the ball guide sleeve 25 is sleeved outside the connecting portion 212 and connected to the connecting portion 212. Optionally, the connecting portion 212 is disposed at a middle portion of the piston main body 211.
In one embodiment, with continuing reference to fig. 1, the single valve nozzle 100 further includes a cylinder head 40, a first cavity 41 is disposed on a side of the cylinder head 40 close to the cylinder block 20, the connecting portion 212 on which the ball guide sleeve 25 is mounted is movable in the first cavity 41, and the ball guide sleeve 25 is limited by a first cavity wall.
In the process that the piston 21 drives the valve needle 30 to move, the first cavity position 41 serves as a movement space of the connecting part 212 provided with the ball guide sleeve 25 in a sleeved mode, meanwhile, the ball guide sleeve 25 is limited by the wall of the first cavity position, the ball guide sleeve 25 can be stably sleeved on the connecting part 212, the movement balance of the piston 21 can be guaranteed, the valve needle 30 and the valve needle sleeve 22 can be kept concentric all the time in the moving process, and the problem of glue leakage caused by reduction of matching precision in the moving process is solved.
In an embodiment, referring to fig. 1, a washer 26 is disposed on a side of the ball guide sleeve 25 away from the piston main body 211, the washer 26 is connected to the connecting portion 212, and the washer 26 is used for limiting the ball guide sleeve 25, so that the ball guide sleeve 25 can be stably sleeved on the connecting portion 212, and the balance of the movement of the piston 21 can be ensured, so that the valve needle 30 and the valve needle sleeve 22 are kept concentric during the movement, and the problem of glue leakage caused by the decrease of the matching precision during the movement is avoided.
Alternatively, the washer 26 is coupled to the coupling portion 212 by a first screw 261, so that the washer 26 is stably coupled to the coupling portion 212.
In one embodiment, referring to fig. 3, a second cavity 2111 is disposed at a side of the piston 21 close to the valve needle 30, a connecting protrusion 2112 is disposed in the second cavity 2111, a connecting recess 31 is correspondingly disposed on the valve needle 30, and the connecting protrusion 2112 is disposed in the connecting recess 31 to connect the valve needle 30 to the piston 21. The needle 30 can be stably coupled to the piston 21 by the engagement of the coupling protrusion 2112 and the coupling recess 31.
In one embodiment, with continued reference to fig. 1, the single valve nozzle 100 further comprises a pressing cap 27, and the valve needle sleeve 22 is fixed in the cylinder 20 through the pressing cap 27. The pressing cap 27 is provided to stably fix the valve needle sheath 22 in the cylinder body 20.
In one embodiment, with continued reference to fig. 1, the single valve nozzle 100 further comprises a main nozzle 50, the main nozzle 50 being disposed above the cylinder head 40 and connected to the cylinder head 40. Optionally, the main nozzle 50 is connected to the cylinder head 40 by a second screw.
In one embodiment, with continued reference to FIG. 1, the single valve nozzle 100 further includes a splitter post 60, the splitter post 60 being assembled within the cylinder 20. After the piston 21 is assembled with the valve needle 30, the valve needle is installed in the cylinder body 20, at this time, the flow passage hole of the cylinder cover 40 is aligned with the position of the flow dividing column 60, the installation is completed, and the rubber material flows into the flow passage through the main nozzle 50 and is converged into the flow passage of the hot nozzle body 10 through the flow dividing column 60.
In one embodiment, with continued reference to fig. 1, the single valve nozzle 100 further comprises a water carrying sleeve 70, and the water carrying sleeve 70 is assembled with the hot nozzle body 10 and connected with the cylinder 20 by a third screw. The circulating cooling water in the water conveying sleeve 70 ensures that the silica gel is not solidified in advance in the flow channel of the hot nozzle body 10, and then is injected into the mold cavity through the glue outlet of the hot nozzle body 10.
In one embodiment, with continued reference to fig. 1, the single-valve nozzle 100 further includes a heat-insulating cap 11 disposed at an end of the hot nozzle body 10 and connected to the hot nozzle body 10, wherein the heat-insulating cap is used for blocking heat of the mold and preventing the glue from being solidified by heating.
In summary, the present embodiment provides a leakproof single valve nozzle 100, which includes a cylinder 20 and a hot nozzle body 10 disposed on one side of the cylinder 20, and the single valve nozzle 100 further includes: a piston 21, the piston 21 being provided in the cylinder 20; a valve needle 30, wherein the valve needle 30 penetrates through the cylinder 20 and extends into the hot nozzle body 10, and the piston 21 is connected to one side of the valve needle 30 away from the hot nozzle body 10; the valve needle sleeve 22 is arranged in the cylinder body 20, and the valve needle sleeve 22 is sleeved outside the valve needle 30; and the sealing element 23 is arranged in the cylinder body 20 and sleeved outside the valve needle 30, and the sealing element 23 is positioned on one side of the valve needle sleeve 22 far away from the piston 21. The single valve mouth 100 of antiseep that this embodiment provided, in the process of moulding plastics, drive the motion of needle 30 at piston 21, the relative needle cover 22 motion of needle 30, the realization is to the opening and closing of hot sprue 10 ingate, sealing member 23 has been set up in the bottom of needle cover 22, in the relative needle cover 22 motion's of needle 30 in-process, its sealing member 23 is used for the separation to adhere the sizing material on needle 30 and drops, guarantee the cleanness on needle 30 surface, the cooperation clearance seepage of sizing material through needle 30 and needle cover 22 has been avoided, and simple structure, low cost.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a single-valve of antiseep is chewed, includes the cylinder body and locates the body is chewed to the heat of cylinder body one side, its characterized in that, the single-valve is chewed and still is included:
the piston is arranged in the cylinder body;
the valve needle penetrates through the cylinder body and extends into the hot nozzle body, and one side, far away from the hot nozzle body, of the valve needle is connected with the piston;
the valve needle sleeve is sleeved in the cylinder body and is sleeved outside the valve needle;
the sealing element is arranged in the cylinder body and sleeved outside the valve needle, and the sealing element is positioned on one side, away from the piston, of the valve needle sleeve.
2. The anti-leakage single valve according to claim 1, further comprising a spacer block, wherein the spacer block is disposed in the cylinder and sleeved outside the valve needle, the spacer block is located on a side of the valve needle sleeve away from the piston and abutted against the valve needle sleeve, and the sealing member is limited by the spacer block.
3. The single valve of claim 2, wherein the cushion block has an annular groove, the cushion block abuts against the valve needle sleeve to form a first annular cavity, and the first sealing element of the sealing element is disposed in the first annular cavity.
4. The single valve mouth of claim 2 or 3, wherein a second annular cavity is provided between said spacer and said cylinder inner wall, and said sealing member comprises a second sealing member provided in said second annular cavity.
5. The anti-leakage single valve nozzle according to claim 1, further comprising a ball guide sleeve, wherein the ball guide sleeve is arranged on one side of the valve needle far away from the piston and connected with the piston.
6. The single valve of claim 5, wherein the piston comprises a piston body and a connecting portion disposed on the piston body, and the ball guide is sleeved outside the connecting portion and connected to the connecting portion.
7. The anti-leakage single valve nozzle according to claim 6, further comprising a cylinder cover, wherein a first cavity is formed in one side of the cylinder cover close to the cylinder body, the connecting portion provided with the ball guide sleeve can move in the first cavity, and the ball guide sleeve is limited by a first cavity wall.
8. The single valve mouth of claim 6, wherein a gasket is disposed on a side of the ball guide away from the piston body, the gasket is connected to the connecting portion, and the gasket is used for limiting the ball guide.
9. The single valve of claim 1, wherein a second cavity is formed at a side of the piston adjacent to the valve needle, and a connecting protrusion is formed in the second cavity and corresponds to a connecting recess formed in the valve needle, and the connecting protrusion is formed in the connecting recess to connect the valve needle to the piston.
10. The leak-proof single valve according to claim 1, further comprising a pressing cap, wherein said valve needle sleeve is fixed in said cylinder by said pressing cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121552138.4U CN215242566U (en) | 2021-07-07 | 2021-07-07 | Anti-leakage single valve nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121552138.4U CN215242566U (en) | 2021-07-07 | 2021-07-07 | Anti-leakage single valve nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN215242566U true CN215242566U (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121552138.4U Active CN215242566U (en) | 2021-07-07 | 2021-07-07 | Anti-leakage single valve nozzle |
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| Country | Link |
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| CN (1) | CN215242566U (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***有限公司 | Anti-leakage single valve nozzle |
-
2021
- 2021-07-07 CN CN202121552138.4U patent/CN215242566U/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***有限公司 | Anti-leakage single valve nozzle |
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