CN217258057U - Valve needle type hot runner nozzle - Google Patents
Valve needle type hot runner nozzle Download PDFInfo
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- CN217258057U CN217258057U CN202220342472.5U CN202220342472U CN217258057U CN 217258057 U CN217258057 U CN 217258057U CN 202220342472 U CN202220342472 U CN 202220342472U CN 217258057 U CN217258057 U CN 217258057U
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- nozzle
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- shell
- valve needle
- hot runner
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Abstract
The utility model discloses a valve pin formula hot runner nozzle, which comprises a mounting bas, the sprue has been seted up at the mountain end face middle part of mount pad, the below of mount pad is provided with the nozzle shell, the mounting groove has been seted up to the bottom face of nozzle shell, a plurality of and the communicating subchannel of mounting groove have been seted up to the up end of nozzle shell, the hollow needle of interior top lateral wall fixedly connected with of mounting groove, the surface sliding sleeve of hollow needle is equipped with the sealing piston piece, the bottom face fixedly connected with nozzle main part of sealing piston piece, the surface cover of nozzle main part is equipped with the spring, the surface below threaded connection of nozzle shell has the connection lid, and this nozzle not only can be convenient for open and close, has the effect that prevents the raw materials countercurrent simultaneously.
Description
Technical Field
The utility model relates to a nozzle technical field for the hot runner specifically is a valve pin formula hot runner nozzle.
Background
The existing single-point needle valve hot runner mold is driven by adopting a piston air pressure type, a piston is controlled by utilizing an air pressure mode, the piston is fixedly connected with a valve needle, the valve needle moves up and down while the piston is controlled, and the valve needle closes or opens a discharge hole. However, in the prior art, a valve needle is driven by means of air pressure of a piston, so that a mold is overlarge in size, complex in structure and high in manufacturing cost, and therefore, a valve needle type hot runner nozzle is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a valve pin type hot runner nozzle to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a valve needle type hot runner nozzle comprises an installation seat, wherein a main runner is arranged in the middle of the mountain end face of the installation seat, a nozzle shell is arranged below the installation seat, a mounting groove is formed in the bottom end face of the nozzle shell, a plurality of sub-runners communicated with the mounting groove are formed in the upper end face of the nozzle shell, a hollow valve needle is fixedly connected to the side wall of the inner top of the mounting groove, a sealing block is fixedly bonded to the bottom of the hollow valve needle, a plurality of feeding holes are formed in the outer surface of the middle upper portion of the hollow valve needle, a plurality of discharging holes are formed in the outer surface of the middle lower portion of the hollow valve needle, a sealing piston block is slidably sleeved on the outer surface of the hollow valve needle, a nozzle main body is fixedly connected to the bottom end face of the sealing piston block, a spring is sleeved on the outer surface of the nozzle main body, and the top end of the spring is fixedly connected with the bottom end face of the sealing piston block, the utility model discloses a nozzle shell, including nozzle shell, spring, connecting cover, sealing piston block, mounting groove, connecting cover, nozzle shell's surface below threaded connection has the connecting cover, the bottom of spring and the interior terminal lateral wall butt of connecting the cover, the through-hole has been seted up to the bottom face of connecting the cover, the below of through-hole is stretched out to the bottom of nozzle body, the inner wall sliding connection of sealing piston block and mounting groove, a plurality of spacing archs of the surface middle part fixedly connected with of hollow needle.
Preferably, the mounting seat is in threaded connection with the nozzle housing.
Preferably, the upper end face of the nozzle shell is integrally connected with an annular bulge, a sealing groove is formed in the bottom end face of the mounting seat, a sealing washer is arranged inside the sealing groove, and the annular bulge is abutted to the sealing washer.
Preferably, the diameter of the nozzle main body is larger than that of a through hole formed in the bottom end face of the connecting cover.
Preferably, the outer surface of the nozzle shell is provided with a heating sleeve, an annular cavity is formed in the heating sleeve, an electric heating wire is installed in an inner spiral sleeve of the annular cavity, a heat-conducting silica gel layer is fixedly bonded to the inner wall of the heating sleeve, and the inner wall of the heat-conducting silica gel layer is abutted to the outer wall of the nozzle shell.
Preferably, the outer surface of the connecting cover is fixedly connected with an internal thread cover, and the heating sleeve is in threaded connection with the internal thread cover.
Compared with the prior art, the beneficial effects of the utility model are that: the nozzle is convenient to use and simple in structure, during injection molding, injection molding raw materials enter the plurality of sub-runners through the main runner, then the injection molding raw materials enter the mounting groove through the plurality of sub-runners, the sealing piston block moves downwards under the pressure of the raw materials, the spring is compressed at the moment, the hollow valve rod is separated from the discharge hole of the nozzle main body, when the sealing piston block moves below the feed hole, the raw materials enter the hollow valve needle through the mounting groove, then the raw materials enter the nozzle main body through the discharge hole in the hollow valve needle, and finally the raw materials are sprayed out through the nozzle main body; the nozzle shell is connected with the mounting seat through threads, so that the nozzle shell is convenient to disassemble and assemble, and further, the nozzle shell is convenient to clean by personnel; the sealing performance of the installed nozzle shell can be improved by matching the annular bulge with the sealing washer; the nozzle can be heated through the heating sleeve, and then the blockage in the nozzle can be avoided.
Drawings
FIG. 1 is a schematic sectional elevation view of a main body structure of a valve needle type hot runner nozzle;
fig. 2 is a schematic front view of a main body structure of a valve needle type hot runner nozzle.
In the figure: 1-mounting seat, 2-heat-conducting silica gel layer, 3-nozzle shell, 4-branch channel, 5-mounting groove, 6-feeding hole, 7-limiting protrusion, 8-spring, 9-hollow valve needle, 10-discharging hole, 11-sealing block, 12-nozzle main body, 13-connecting cover, 14-internal thread cover, 15-sealing piston block, 16-electric heating wire, 17-annular cavity, 18-heating jacket, 19-annular protrusion, 20-sealing gasket and 21-main channel.
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 work belong to the protection scope of the present invention.
Example 1: referring to fig. 1-2, a valve needle type hot runner nozzle includes an installation seat 1, a main runner 21 is disposed in the middle of the mountain end surface of the installation seat 1, a nozzle housing 3 is disposed below the installation seat 1, a mounting groove 5 is disposed on the bottom end surface of the nozzle housing 3, a plurality of sub-runners 4 communicated with the mounting groove 5 are disposed on the upper end surface of the nozzle housing 3, a hollow valve needle 9 is fixedly connected to the side wall of the inner top of the mounting groove 5, a sealing block 11 is fixedly bonded to the bottom of the hollow valve needle 9, a plurality of feeding holes 6 are disposed on the outer surface of the middle upper portion of the hollow valve needle 9, a plurality of discharging holes 10 are disposed on the outer surface of the middle lower portion of the hollow valve needle 9, a sealing piston block 15 is slidably disposed on the outer surface of the hollow valve needle 9, a nozzle main body 12 is fixedly connected to the bottom end surface of the sealing piston block 15, and a spring 8 is disposed on the outer surface of the nozzle main body 12, the top of spring 8 and the bottom end face fixed connection of sealed piston piece 15, the surface below threaded connection of nozzle shell 3 has connection lid 13, the bottom of spring 8 and the interior terminal lateral wall butt of connecting lid 13, the through-hole has been seted up to the bottom end face of connecting lid 13, the below of through-hole is stretched out to the bottom of nozzle main part 12, the inner wall sliding connection of sealed piston piece 15 and mounting groove 5, a plurality of spacing archs 7 of the surface middle part fixedly connected with of hollow needle 9.
During injection molding, the injection molding raw material enters into a plurality of sub-runners 4 through a main runner 21, then the injection molding raw material enters into a mounting groove 5 through a plurality of sub-runners 4, the sealing piston block 15 moves downwards under the pressure of the raw material, at the moment, the spring 8 is compressed, the hollow valve rod 9 is separated from a discharge hole of the nozzle main body 12, the sealing piston block 15 moves below the feed hole 6, the raw material enters into the hollow valve needle 9 through the mounting groove 5, then the raw material enters into the nozzle main body 12 through the discharge hole 10 on the hollow valve needle 9, finally the raw material is sprayed out through the nozzle main body 12, when the main runner 21 does not feed, under the action of the spring 8, the sealing piston block 15 resets, at the moment, the feed hole 6 and the discharge hole on the nozzle main body 12 are blocked, the nozzle can be conveniently opened and closed, and simultaneously has the function of preventing the raw material from flowing backwards.
Wherein, mount pad 1 and 3 threaded connection of nozzle shell, through mount pad 1 and 3 threaded connection of nozzle shell, the dismouting nozzle shell 3 of being convenient for, and then the personnel of being convenient for wash nozzle shell 1.
The upper end face of the nozzle shell 3 is integrally connected with an annular bulge 19, a sealing groove is formed in the bottom end face of the mounting seat 1, a sealing washer 20 is arranged inside the sealing groove, and the annular bulge 19 is abutted to the sealing washer 20.
By the annular projection 19 cooperating with the sealing washer 20, the tightness of the nozzle housing 3 after installation is improved.
Wherein, the diameter of the nozzle main body 12 is larger than the diameter of a through hole arranged on the bottom end surface of the connecting cover 13.
Example 2: referring to fig. 1-2, a valve needle type hot runner nozzle is different from embodiment 1 in that a heating jacket 18 is disposed on an outer surface of a nozzle housing 3, an annular cavity 17 is disposed inside the heating jacket 18, an electric heating wire 16 is spirally sleeved inside the annular cavity 17, a heat-conducting silica gel layer 2 is fixedly bonded to an inner wall of the heating jacket 18, and an inner wall of the heat-conducting silica gel layer 2 abuts against an outer wall of the nozzle housing 3.
The nozzle can be heated by the heating sleeve 18, and the blockage inside the nozzle can be avoided.
Further, an internal thread cover 14 is fixedly connected to the outer surface of the connecting cover 13, and the heating jacket 18 is screwed with the internal thread cover 14.
The heating jacket 18 can be conveniently disassembled and assembled by connecting the heating jacket 18 with the internal thread cover 14 in a threaded manner.
In the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for convenience of describing the structural relationship of each component or element of the present invention, and are not specific to any component or element of the present invention, and are not to be construed as limiting the present invention.
Claims (6)
1. A valve needle type hot runner nozzle comprises a mounting seat (1) and is characterized in that: the injection nozzle is characterized in that a main flow channel (21) is formed in the middle of the mountain end face of the mounting seat (1), a nozzle shell (3) is arranged below the mounting seat (1), a mounting groove (5) is formed in the bottom end face of the nozzle shell (3), a plurality of branch flow channels (4) communicated with the mounting groove (5) are formed in the upper end face of the nozzle shell (3), a hollow valve needle (9) is fixedly connected to the side wall of the inner top of the mounting groove (5), a sealing block (11) is fixedly bonded to the bottom of the hollow valve needle (9), a plurality of feed holes (6) are formed in the outer surface of the middle upper portion of the hollow valve needle (9), a plurality of discharge holes (10) are formed in the outer surface of the middle lower portion of the hollow valve needle (9), a sealing piston block (15) is slidably sleeved on the outer surface of the hollow valve needle (9), and a nozzle main body (12) is fixedly connected to the bottom end face of the sealing piston block (15), the outer surface cover of nozzle main part (12) is equipped with spring (8), the top of spring (8) and the bottom end face fixed connection of sealed piston piece (15), the surface below threaded connection of nozzle shell (3) has connection lid (13), the bottom of spring (8) and the interior bottom end lateral wall butt of connecting lid (13), the through-hole has been seted up to the bottom end face of connecting lid (13), the below of through-hole is stretched out to the bottom of nozzle main part (12), the inner wall sliding connection of sealed piston piece (15) and mounting groove (5), the surface middle part fixed connection of hollow needle (9) has a plurality of spacing archs (7).
2. The valve pin type hot runner nozzle according to claim 1, wherein: the mounting seat (1) is in threaded connection with the nozzle shell (3).
3. The valve pin type hot runner nozzle according to claim 2, wherein: the up end integration of nozzle shell (3) is connected with annular arch (19), the seal groove has been seted up to the bottom face of mount pad (1), and the internally mounted of seal groove has seal ring (20), annular arch (19) and seal ring (20) butt.
4. The valve pin type hot runner nozzle according to claim 3, wherein: the diameter of the nozzle main body (12) is larger than that of a through hole formed in the bottom end face of the connecting cover (13).
5. The valve pin type hot runner nozzle according to claim 4, wherein: the utility model discloses a nozzle, including nozzle shell (3), nozzle shell (3) surface is provided with heating jacket (18), toroidal cavity (17) have been seted up to the inside of heating jacket (18), the inside spiral shell of toroidal cavity (17) is equipped with electric heating wire (16), the inner wall of heating jacket (18) is fixed to be bonded has heat conduction silica gel layer (2), the inner wall and the nozzle shell (3) outer wall butt of heat conduction silica gel layer (2).
6. The valve pin type hot runner nozzle according to claim 5, wherein: the outer surface of the connecting cover (13) is fixedly connected with an internal thread cover (14), and the heating sleeve (18) is in threaded connection with the internal thread cover (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220342472.5U CN217258057U (en) | 2022-02-18 | 2022-02-18 | Valve needle type hot runner nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220342472.5U CN217258057U (en) | 2022-02-18 | 2022-02-18 | Valve needle type hot runner nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217258057U true CN217258057U (en) | 2022-08-23 |
Family
ID=82856393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220342472.5U Active CN217258057U (en) | 2022-02-18 | 2022-02-18 | Valve needle type hot runner nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217258057U (en) |
-
2022
- 2022-02-18 CN CN202220342472.5U patent/CN217258057U/en active Active
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