CN103331869B - A kind of pinpoint hot runner nozzle structure for syringe part - Google Patents
A kind of pinpoint hot runner nozzle structure for syringe part Download PDFInfo
- Publication number
- CN103331869B CN103331869B CN201310233399.3A CN201310233399A CN103331869B CN 103331869 B CN103331869 B CN 103331869B CN 201310233399 A CN201310233399 A CN 201310233399A CN 103331869 B CN103331869 B CN 103331869B
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- Prior art keywords
- hot
- runner
- face
- flange
- runner nozzle
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- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
nullThe present invention relates to a kind of pinpoint hot runner nozzle structure for syringe part，Including hot-runner nozzle、Heat insulating mattress，It is characterized in that: hot-runner nozzle includes hollow spherical surface body or cone、Hollow cylinder、Near spherical surface body or the flange of cone，The part that the cylinder of hollow contacts with casting resin is hollow spherical surface body or cone，The side of the end face at hot-runner nozzle resin outlet in hot-runner device is provided with the first round platform，The heat insulating mattress end face near the flange side endoporus corresponding with die cavity cast gate rear end offsets，Heat insulating mattress offsets near flange one side end face with the first round platform away from flange one side end face，Flange、The part of the first round platform outer surface props up the endoporus that die cavity cast gate rear end is corresponding tightly，The end face of hot-runner nozzle the first round platform directly with the flow distribution plate resin outlet in hot-runner device at end face be closely affixed.The invention have the advantage that hot-runner nozzle will not produce position skew because of hot-runner device thermal expansion, reach pinpoint purpose.
Description
Technical field
The present invention relates to a kind of hot runner mould runner nozzle structure, be specifically related to the runner nozzle structure of the syringe part injection mo(u)lding hot runner mould of a kind of improvement.
Background technology
For the pin-point gate nozzle of hot runner mould, because of its compact, flexible topology, cast gate little and be prone to break and at cast gate outward appearance need not to repair etc. feature be widely used, especially in the syringe part that major diameter ratio is bigger produces.
The parts such as syringe, sheath are because of the bigger feature of major diameter ratio, particularly on the hot-runner device hot runner mould to 2 or more than 2 hot-runner nozzles, (see Fig. 5-1, Fig. 5-2, Fig. 5-1 be a hot-runner device 1 with 8 monolateral enter glue hot-runner nozzle, Fig. 5-2 be a hot-runner device 1 with 8 bilateral enter glue hot-runner nozzle), the hot-runner nozzle of spot pouring mouth is positioned and claims, particularly along the radial direction of nozzle.Under normal conditions, hot-runner nozzle is to be directly installed on the hot flow path body being connected with flow distribution plate or flow distribution plate (below connection or the flow distribution plate of hot flow path body with flow distribution plate being referred to as hot-runner device) by retention mechanism, hot-runner device is in process of production, can occur self to expand because being heated, the hot-runner nozzle being attached thereto is along with movement.Now, hot-runner nozzle will be destroyed with the cast gate concentricity of mould.If hot-runner nozzle is in injection moulding process, can not keep concentric with mould gate, during injection, the mobile equilibrium of resin can be destroyed, product, after injection completes, may have bad phenomenon such as flying silk, and the cast gate on mould and hot mouth also can produce monolateral collision simultaneously, cause the bad phenomenon such as hot sharp-tongued bad, not discharging；Because nozzle is connected with hot-runner device by retention mechanism, extremely convenient during maintenance.
Summary of the invention
The technical problem to be solved is: for the problems referred to above provide can injection time pinpoint hot runner nozzle structure.
In order to solve above-mentioned technical problem, the present invention by the following technical solutions:
nullA kind of pinpoint hot runner nozzle structure for syringe part，Including hot-runner nozzle、Heat insulating mattress，It is characterized in that: hot-runner nozzle includes hollow spherical surface body or cone、Hollow cylinder、Near spherical surface body or the flange of cone，The part that the cylinder of hollow contacts with casting resin is hollow spherical surface body or cone，The side of the end face at hot-runner nozzle resin outlet in hot-runner device is provided with the first round platform，It is provided with the second round platform near flange side at the first round platform，The heat insulating mattress end face near the flange side endoporus corresponding with die cavity cast gate rear end offsets，Heat insulating mattress offsets near flange one side end face with the first round platform away from flange one side end face，Flange、The part of the first round platform outer surface props up the endoporus that die cavity cast gate rear end is corresponding tightly，The end face of hot-runner nozzle the first round platform directly with the flow distribution plate resin outlet in hot-runner device at end face be closely affixed.
Described flange is split-type structural with the hollow cylinder of hot-runner nozzle.
Described hot-runner nozzle is provided with two groups or more, before and after correspondence is arranged in hot-runner device or upper and lower peripheral region.
A kind of pinpoint hot runner nozzle structure for syringe part, including hot-runner nozzle, heat insulating mattress, it is characterized in that: hot-runner nozzle includes hollow spherical surface body or cone, hollow cylinder, near spherical surface body or the flange of cone 1, the part that the cylinder of hollow contacts with casting resin is hollow spherical surface body or cone, the side of the end face at hot-runner nozzle resin outlet in hot-runner device is provided with the first round platform, it is provided with the second round platform near flange side at the first round platform, the heat insulating mattress end face near the flange side endoporus corresponding with die cavity cast gate rear end offsets, heat insulating mattress offsets near flange one side end face with the first round platform away from flange one side end face, flange, the part of the first round platform outer surface props up the endoporus that die cavity cast gate rear end is corresponding tightly；A contiguous block is had between hot-runner nozzle and hot-runner device, contiguous block is partly or entirely in hot-runner device, contiguous block and the first round platform are in close contact away from the end face of flange side, when contiguous block is all in hot-runner device, the contact surface of contiguous block and the first round platform end face overlaps with the end face at hot-runner device resin outlet, when contiguous block part is in hot-runner device, a part for contiguous block is stretched out outside hot-runner device, and now the contact surface of contiguous block 11 and the first round platform is positioned at outside hot-runner device.
The present invention compared with prior art has the advantages that the heat insulating mattress end face near the flange side endoporus corresponding with the cast gate rear end of die cavity offsets, heat insulating mattress offsets near flange one side end face with the first circle away from flange one side end face so that hot-runner nozzle can not move axially along.Flange and the first round platform produce thermal expansion in radial directions, flange, the part of the first round platform outer surface will prop up the endoporus that the cast gate rear end of die cavity is corresponding tightly, the most described hot-runner nozzle is the most all being fixed, hot-runner nozzle one end at hot-runner device resin outlet overlaps with hot-runner device end face, hot-runner nozzle is fastenedly connected with it in not extending into hot-runner device, when hot-runner device occurs thermal expansion in a heated condition, only because of end-face friction, so hot-runner nozzle will not produce position skew because of hot-runner device thermal expansion, reach pinpoint purpose.
Accompanying drawing explanation
Fig. 1 is the die structure of hot runner figure of embodiment 1
Fig. 2 is the partial enlarged drawing of Fig. 1
Fig. 3 is the structural representation of hot-runner nozzle
Fig. 4 is the die structure of hot runner figure of embodiment 2
Fig. 5-1 be hot-runner device band 8 monolateral enter glue the planar arrangement figure of hot-runner nozzle
Fig. 5-2 be hot-runner device band 8 bilateral enter glue the planar arrangement figure of hot-runner nozzle.
Detailed description of the invention
Embodiment one:
Seeing Fig. 1, Fig. 2, Fig. 5-1, Fig. 5-2, hot runner mould includes the flow distribution plate 2 in front apron 1, heat-flow device, hot runner manifold 3, cavity plate 4, die cavity baffle plate 5, strangles plate 6, core fixing plate 7, backboard 8, hot-runner device 9, contiguous block 11, hot-runner nozzle 12, pressing plate 13, heat insulating mattress 14, die cavity 15, strangles that plate is bushing 16, core 17.
Seeing Fig. 3, hot-runner nozzle 12 includes hollow spherical surface body or cone 121, hollow cylinder 122, close spherical surface body or the flange 123 of cone 121, and the part that hollow cylinder 122 contacts with injection-molded item is hollow spherical surface body or cone 121.Hollow runs through whole cylinder, including spherical surface body or described cone.Hot-runner nozzle 12 is provided with two groups or more, before and after correspondence is arranged in hot-runner device 9 or upper and lower peripheral region.
The outer of hollow cylinder 122 is near hollow spherical surface body or cone 121 side, there is the flange 123 of an evagination, the full-size of flange 123 outer surface is less than the size of the corresponding endoporus laying flange in cast gate rear end of die cavity, and flange 123 and hollow cylinder 122 can be split-type structurals.
The side of the end face 127 at the hot-runner nozzle 12 resin outlet in hot-runner device 9 is provided with the first round platform 124, the second round platform 125 it is provided with near flange side at the first round platform 124, second round platform 125 is less than the first round platform 124 diameter, but is more than the full-size of hollow cylinder 122.
The through hole of hot-runner nozzle connects at hot-runner device 9 resin outlet.Step is formed between first round platform 124 and second round platform the 125, second round platform 125 and hollow cylinder 122.The heat insulating mattress 14 of an annular is had between second round platform 125 outer surface and die cavity 15 endoporus.The heat insulating mattress 14 end face near the flange side endoporus corresponding with die cavity cast gate rear end offsets, and heat insulating mattress 14 offsets near flange one side end face with the first round platform 124 away from flange 123 1 side end face.The part of flange the 123, first round platform 124 outer surface props up the endoporus that die cavity cast gate rear end is corresponding tightly so that hot-runner nozzle 12 is all fixed on axially and radially direction.
For the ease of changing hot-runner nozzle 12, having in the middle of a contiguous block 11, contiguous block 11 and have a contiguous block through hole between hot-runner nozzle 12 and hot-runner device 9, contiguous block through hole communicates with hot-runner nozzle and hot-runner device respectively.Contiguous block 11 is fixed in hot-runner device by pressing plate 13 by securing member.Contiguous block 11 can be partly or entirely in hot-runner device 9.Contiguous block 11 is in close contact away from the end face 126 of flange side with hot-runner nozzle the first round platform, when contiguous block 11 is all in hot-runner device 9, contiguous block 11 overlaps with the end face 127 at hot-runner device 9 resin outlet with the contact surface of the first round platform end face 126, when contiguous block 11 part is in hot-runner device 9, a part for contiguous block 11 is stretched out outside hot-runner device 9, and now the contact surface of contiguous block 11 and the first round platform 124 is positioned at outside hot-runner device 9.
Hollow in hollow in the resin passage of hot-runner device 9, the hollow of contiguous block 11 and hot-runner nozzle 12 cylinder and 12 1 sections of spherical surface body of hot-runner nozzle or cone 121 constitutes a path complete, leak free.Resin is entered the die cavity of mould by hot-runner device 9, contiguous block 11, hot-runner nozzle 12.
Hot-runner nozzle 12 and contiguous block 11 can occur thermal expansion under conditions of heating, in being fixed on hot-runner device due to contiguous block 11 by pressing plate 13 immovable, extruding hot-runner nozzle 12 is moved by contiguous block 11 to mould gate direction, the first round platform end face 126 that contiguous block 11 extruding tightly contacts therewith, and make the opposite side of the first round platform near the end face extruding heat insulating mattress 14 tightly of mould gate, now, the other end of heat insulating mattress will the endoporus corresponding against die cavity cast gate rear end tightly.Hot-runner nozzle will be able to not move on the axial direction of hot-runner nozzle.Meanwhile, flange 123 and the first round platform 124 produce thermal expansion in radial directions, and the part of flange the 123, first round platform 124 outer surface will prop up the endoporus that die cavity cast gate rear end is corresponding tightly.Now hot-runner nozzle 12 is all fixed on axially and radially direction, and therefore the position of hot-runner nozzle is also fixed, thus reaches pinpoint purpose.
The present embodiment is in close contact away from the end face 126 of flange side with hot-runner nozzle the first round platform due to contiguous block 11, therefore one end that hot-runner nozzle 12 is at hot-runner device 9 resin outlet does not extend in hot-runner device 9, when hot-runner device 9 occurs thermal expansion in a heated condition, owing to hot-runner nozzle 12 only end face 126 fits tightly with contiguous block 11, only because of end-face friction, so hot-runner nozzle 12 will not produce position skew because of hot-runner device 9 thermal expansion, reach pinpoint purpose.Owing to being provided with contiguous block 11 between hot-runner nozzle 12 and the 9 of hot-runner device, therefore hot-runner nozzle is easier to change.After pressing plate 13 is removed, remove contiguous block 11, just can easier change hot-runner nozzle.
Embodiment two:
See Fig. 4, in the present embodiment, the end face of the first round platform of hot-runner nozzle 12 126 directly with flow distribution plate 2 resin outlet in hot-runner device at end face 127 be closely affixed.Other parts with principle ibid, repeat no more here.
Equally, due to hot-runner nozzle the first round platform end face 126 directly with hot-runner device 9 resin outlet at end face 127 be closely affixed, therefore one end that hot-runner nozzle 12 is at hot-runner device 9 resin outlet does not extend in hot-runner device 9, when hot-runner device 9 occurs thermal expansion in a heated condition, owing to the end face 127 of hot-runner nozzle 12 only end face 126 with hot-runner device 9 fits tightly, only because of end-face friction, so hot-runner nozzle 12 will not produce position skew because of hot-runner device 9 thermal expansion, reach pinpoint purpose.
Claims (6)
- null1. the pinpoint hot runner nozzle structure for syringe part，Including hot-runner nozzle (12)、Heat insulating mattress (14)，It is characterized in that: hot-runner nozzle (12) includes hollow spherical surface body or cone (121)、Hollow cylinder (122)、Near spherical surface body or the flange (123) of cone (121)，The part that the cylinder (122) of hollow contacts with casting resin is hollow spherical surface body or cone (121)，The side of the end face (127) at the hot-runner nozzle (12) resin outlet in hot-runner device (9) is provided with the first round platform (124)，It is provided with the second round platform (125) near flange side at the first round platform (124)，The endoporus that the end face of close flange (123) side of heat insulating mattress (14) is corresponding with die cavity cast gate rear end offsets，Heat insulating mattress (14) offsets near flange (123) side end face with the first round platform (124) away from flange (123) side end face，Flange (123)、The part of the first round platform (124) outer surface props up the endoporus that die cavity cast gate rear end is corresponding tightly，The end face (126) of hot-runner nozzle the first round platform directly with flow distribution plate (2) resin outlet in hot-runner device (9) at end face (127) be closely affixed.
- A kind of pinpoint hot runner nozzle structure for syringe part, it is characterised in that: described flange (123) is split-type structural with the hollow cylinder (122) of hot-runner nozzle (12).
- A kind of pinpoint hot runner nozzle structure for syringe part, it is characterized in that: described hot-runner nozzle (12) is provided with two groups or more, before and after correspondence is arranged in hot-runner device (9) or upper and lower peripheral region.
- null4. the pinpoint hot runner nozzle structure for syringe part，Including hot-runner nozzle (12)、Heat insulating mattress (14)，It is characterized in that: hot-runner nozzle (12) includes hollow spherical surface body or cone (121)、Hollow cylinder (122)、Near spherical surface body or the flange (123) of cone (121)，The part that the cylinder (122) of hollow contacts with casting resin is hollow spherical surface body or cone (121)，The side of the end face (127) at the hot-runner nozzle (12) resin outlet in hot-runner device (9) is provided with the first round platform (124)，It is provided with the second round platform (125) near flange side at the first round platform (124)，The endoporus that the end face of close flange (123) side of heat insulating mattress (14) is corresponding with die cavity cast gate rear end offsets，Heat insulating mattress (14) offsets near flange (123) side end face with the first round platform (124) away from flange (123) side end face，Flange (123)、The part of the first round platform (124) outer surface props up the endoporus that die cavity cast gate rear end is corresponding tightly；A contiguous block (11) is had between hot-runner nozzle (12) and hot-runner device (9), contiguous block (11) is partly or entirely in hot-runner device (9), contiguous block (11) is in close contact away from the end face (126) of flange side with the first round platform, when contiguous block (11) is all in hot-runner device (9), contiguous block (11) overlaps with the end face (127) at hot-runner device (9) resin outlet with the contact surface of the first round platform end face (126), when contiguous block (11) part is in hot-runner device (9), a part for contiguous block (11) is stretched out at hot-runner device (9) outward, now contiguous block (11) is positioned at outside hot-runner device (9) with the contact surface of the first round platform (124).
- A kind of pinpoint hot runner nozzle structure for syringe part, it is characterised in that: described flange (123) is split-type structural with the hollow cylinder (122) of hot-runner nozzle (12).
- A kind of pinpoint hot runner nozzle structure for syringe part, it is characterized in that: described hot-runner nozzle (12) is provided with two groups or more, before and after correspondence is arranged in hot-runner device (9) or upper and lower peripheral region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310233399.3A CN103331869B (en) | 2013-06-09 | 2013-06-09 | A kind of pinpoint hot runner nozzle structure for syringe part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310233399.3A CN103331869B (en) | 2013-06-09 | 2013-06-09 | A kind of pinpoint hot runner nozzle structure for syringe part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103331869A CN103331869A (en) | 2013-10-02 |
| CN103331869B true CN103331869B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310233399.3A Expired - Fee Related CN103331869B (en) | 2013-06-09 | 2013-06-09 | A kind of pinpoint hot runner nozzle structure for syringe part |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651213A (en) * | 2004-02-05 | 2005-08-10 | 日本韮沙株式会社 | Valve nozzle |
| US20050191382A1 (en) * | 2004-02-28 | 2005-09-01 | Swen Spuller | Injection molding tool |
| CN203371740U (en) * | 2013-06-09 | 2014-01-01 | 林作钱 | Hot sprue nozzle structure for accurate positioning of syringe component |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1274368A (en) * | 1988-06-17 | 1990-09-25 | Jobst Ulrich Gellert | Injection molding system with insertable insulating ring |
| US4919606A (en) * | 1988-12-21 | 1990-04-24 | Gellert Jobst U | Injection molding rack and pinion valve pin actuating mechanism |
| CA1292848C (en) * | 1989-02-14 | 1991-12-10 | Jobst Ulrich Gellert | Injection molding system having a valve member with a ribbed insulative portion |
-
2013
- 2013-06-09 CN CN201310233399.3A patent/CN103331869B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1651213A (en) * | 2004-02-05 | 2005-08-10 | 日本韮沙株式会社 | Valve nozzle |
| US20050191382A1 (en) * | 2004-02-28 | 2005-09-01 | Swen Spuller | Injection molding tool |
| CN203371740U (en) * | 2013-06-09 | 2014-01-01 | 林作钱 | Hot sprue nozzle structure for accurate positioning of syringe component |
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| Publication number | Publication date |
|---|---|
| CN103331869A (en) | 2013-10-02 |
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Effective date of registration: 20220725 Address after: 317500 No. 24, Shengyang Road, Shitang Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Zhejiang Qianxiguang Plastic Mold Co.,Ltd. Address before: 317513 Yannan village, Shitang Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: Lin Zuoqian |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |