CN103331869A - Hot-sprue nozzle structure for accurate positioning of syringe parts - Google Patents
Hot-sprue nozzle structure for accurate positioning of syringe parts Download PDFInfo
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- CN103331869A CN103331869A CN2013102333993A CN201310233399A CN103331869A CN 103331869 A CN103331869 A CN 103331869A CN 2013102333993 A CN2013102333993 A CN 2013102333993A CN 201310233399 A CN201310233399 A CN 201310233399A CN 103331869 A CN103331869 A CN 103331869A
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- runner nozzle
- flange
- face
- flow path
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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 description 8
- 238000005266 casting Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract 3
- 239000003292 glue Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
- 239000000243 solution Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The invention relates to a hot-sprue nozzle structure for accurate positioning of syringe parts. The hot-sprue nozzle structure comprises a hot runner nozzle and a thermal insulation mat, and is characterized in the hot runner nozzle comprises a hollow spherical body or cone, a hollow cylinder and a flange close to the spherical body or cone; the part, in contact with injection molding resin, of the hollow cylinder is the hollow spherical body or cone; one side, close to the end face of a resin outlet in a hot runner device, of the hot runner nozzle is provided with a first circular table; the end face of one side, close to the flange, of the thermal insulation mat butts against an inner hole corresponding to the rear end of a cavity sprue, and the end face of one side, far away from the flange, of the thermal insulation mat butts against the end face, close to one side of the flange, of the first circular table; the flange and the part of the outer contour face of the first circular table tightly butt against the inner hole corresponding to the rear end of the cavity sprue; the end face of the first circular table of the hot runner nozzle is directly and tightly fitted with the end face of a splitter plate resin outlet in the hot runner device. The hot-sprue nozzle structure has the advantages that the situation that the hot runner nozzle generates position offset due to thermal expansion of the hot runner device can be avoided, and the purpose of accurate positioning is achieved.
Description
Technical field
The present invention relates to a kind of hot runner mould cast gate nozzle arrangements, be specifically related to a kind of cast gate nozzle arrangements of improved syringe part injection mo(u)lding hot runner mould.
Background technology
The pin-point gate nozzle that is used for hot runner mould, small and exquisite because of its volume, flexible topology waters young and is easy to break and cast gate place outward appearance is not eligible for repair etc. that characteristics are widely used, especially in the bigger syringe part of major diameter ratio is produced.
Parts such as syringe, sheath are because of the bigger characteristics of major diameter ratio, particularly a hot flow path device to the hot runner mould of 2 or 2 above hot-runner nozzles on (referring to Fig. 5-1, Fig. 5-2, Fig. 5-1 is a hot flow path device 1 with the 8 monolateral hot-runner nozzles that advance glue, Fig. 5-2 is hot flow path devices 1 with the 8 bilateral hot-runner nozzles that advance glue), to the hot-runner nozzle location of a cast gate claim, particularly along the radial direction of nozzle.Under normal conditions, hot-runner nozzle be by retention mechanism be directly installed on the hot flow path body or flow distribution plate that is connected with flow distribution plate (following with hot flow path body and flow distribution plate be connected or flow distribution plate is referred to as the hot flow path device), the hot flow path device in process of production, can take place self to expand because being heated, the hot-runner nozzle that is attached thereto is along with movement.At this moment, the cast gate concentricity of hot-runner nozzle and mould will be destroyed.If hot-runner nozzle is in injection moulding process, can not keep concentric with mould gate, during injection moulding, the resin flow balance can be destroyed, product may fly bad phenomenon such as silk after injection moulding is finished, cast gate and the hot mouth on the mould also can produce monolateral collision simultaneously, cause heat sharp-tongued bad, bad phenomenon such as not discharging; Because it is nozzle is connected with the hot flow path device by retention mechanism, very convenient during maintenance.
Summary of the invention
Technical problem to be solved by this invention is: at the problems referred to above provide can be when the injection moulding pinpoint hot runner nozzle structure.
In order to solve the problems of the technologies described above, the present invention by the following technical solutions:
A kind of pinpoint hot runner nozzle structure for syringe part, comprise hot-runner nozzle, heat insulating mattress, it is characterized in that: hot-runner nozzle comprises hollow spherical surface body or cone, hollow cylinder, flange near spherical surface body or cone, the contacted part of the cylinder of hollow and casting resin is hollow spherical surface body or cone, hot-runner nozzle is provided with first round platform near a side of the end face in the resin exit in the hot flow path device, be provided with second round platform at first round platform near flange one side, heat insulating mattress offsets near the end face endoporus corresponding with die cavity cast gate rear end of flange one side, heat insulating mattress offsets near flange one side end face away from flange one side end face and first round platform, flange, the part of the first round platform outer surface props up the corresponding endoporus in die cavity cast gate rear end tightly, the end face of hot-runner nozzle first round platform directly with the hot flow path device in the closely subsides mutually of end face in flow distribution plate resin exit.
The hollow cylinder of described flange and hot-runner nozzle is split-type structural.
Described hot-runner nozzle is provided with two groups or more, and correspondence is arranged in the front and back of hot flow path device or peripheral region up and down.
A kind of pinpoint hot runner nozzle structure for syringe part, comprise hot-runner nozzle, heat insulating mattress, it is characterized in that: hot-runner nozzle comprises hollow spherical surface body or cone, hollow cylinder, flange near spherical surface body or cone 1, the contacted part of the cylinder of hollow and casting resin is hollow spherical surface body or cone, hot-runner nozzle is provided with first round platform near a side of the end face in the resin exit in the hot flow path device, be provided with second round platform at first round platform near flange one side, heat insulating mattress offsets near the end face endoporus corresponding with die cavity cast gate rear end of flange one side, heat insulating mattress offsets flange away from flange one side end face and first round platform near flange one side end face, the part of the first round platform outer surface props up the corresponding endoporus in die cavity cast gate rear end tightly; Between hot-runner nozzle and the hot flow path device contiguous block is arranged, contiguous block is partly or entirely in the hot flow path device, contiguous block closely contacts with the end face of first round platform away from flange one side, when contiguous block all in the hot flow path device, contiguous block overlaps with the end face in hot flow path device resin exit with the contact-making surface of the first round platform end face, when the contiguous block part is in the hot flow path device, the part of contiguous block is stretched out outside the hot flow path device, and this moment, the contact-making surface of contiguous block 11 and first round platform was positioned at outside the hot flow path device.
The present invention compared with prior art has following beneficial effect: heat insulating mattress offsets near the end face endoporus corresponding with the cast gate rear end of die cavity of flange one side, heat insulating mattress offsets near flange one side end face away from flange one side end face and first circle, makes hot-runner nozzle not move axially along it.Flange and first round platform are producing thermal expansion in the radial direction, flange, the part of the first round platform outer surface will prop up the corresponding endoporus in cast gate rear end of die cavity tightly, described like this hot-runner nozzle is axially and radially all be fixed, hot-runner nozzle overlaps with hot flow path device end face near an end in hot flow path device resin exit, hot-runner nozzle does not extend in the hot flow path device and is fastenedly connected with it, when the hot flow path device under heating condition thermal expansion takes place, only because of end-face friction, so hot-runner nozzle can not produce the position skew because of the thermal expansion of hot flow path device, reaches pinpoint purpose.
Description of drawings
Fig. 1 is the hot runner mould structure chart 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 hot runner mould structure chart of embodiment 2
Fig. 5-the 1st, the monolateral plane layout viewing that advances the hot-runner nozzle of glue of hot flow path device band 8
Fig. 5-the 2nd, the bilateral plane layout viewing that advances the hot-runner nozzle of glue of hot flow path device band 8.
The specific embodiment
Embodiment one:
Referring to Fig. 1, Fig. 2, Fig. 5-1, Fig. 5-2, hot runner mould comprises flow distribution plate 2, hot runner manifold 3, cavity plate 4, die cavity baffle plate 5 in front apron 1, the heat-flow device, reins in plate 6, core fixing plate 7, backboard 8, hot flow path device 9, contiguous block 11, hot-runner nozzle 12, pressing plate 13, heat insulating mattress 14, die cavity 15, reins in plate edge cover 16, core 17.
Referring to Fig. 3, hot-runner nozzle 12 comprises the flange 123 of hollow spherical surface body or cone 121, hollow cylinder 122, close spherical surface body or cone 121, and hollow cylinder 122 is hollow spherical surface body or cone 121 with the contacted part of injection-molded item.Hollow runs through whole cylinder, comprises spherical surface body or described cone.Hot-runner nozzle 12 is provided with two groups or more, and correspondence is arranged in the front and back of hot flow path device 9 or peripheral region up and down.
The outer of hollow cylinder 122 is near hollow spherical surface body or cone 121 1 sides, the flange 123 that an evagination is arranged, the full-size of flange 123 outer surfaces is less than the corresponding size of laying the endoporus at flange place in the cast gate rear end of die cavity, and flange 123 can be split-type structural with hollow cylinder 122.
Hot-runner nozzle 12 is provided with first round platform 124 near a side of the end face 127 in the resin exit in the hot flow path device 9, be provided with second round platform 125 at first round platform 124 near flange one side, second round platform 125 is less than first round platform, 124 diameters, but greater than the full-size of hollow cylinder 122.
The through hole of hot-runner nozzle is communicated with hot flow path device 9 resin exits.Form step between first round platform 124 and second round platform 125, second round platform 125 and the hollow cylinder 122.The heat insulating mattress 14 that one annular is arranged between second round platform, 125 outer surfaces and die cavity 15 endoporus.Heat insulating mattress 14 offsets near the end face endoporus corresponding with die cavity cast gate rear end of flange one side, and heat insulating mattress 14 offsets near flange one side end face away from flange 123 1 side end faces and first round platform 124.The part of flange 123, first round platform, 124 outer surfaces props up the corresponding endoporus in die cavity cast gate rear end tightly, makes hot-runner nozzle 12 axially and all be fixed in the radial direction.
For the ease of changing hot-runner nozzle 12, a contiguous block 11 is arranged between hot-runner nozzle 12 and the hot flow path device 9, in the middle of the contiguous block 11 a contiguous block through hole is arranged, the contiguous block through hole communicates with hot-runner nozzle and hot flow path device respectively.Pressing plate 13 is fixed on contiguous block 11 in the hot flow path device by securing member.Contiguous block 11 can be partly or entirely in hot flow path device 9.Contiguous block 11 closely contacts with the end face 126 of hot-runner nozzle first round platform away from flange one side, when contiguous block 11 all in hot flow path device 9, contiguous block 11 overlaps with the end face 127 in hot flow path device 9 resin exits with the contact-making surface of the first round platform end face 126, when contiguous block 11 parts are in hot flow path device 9, the part of contiguous block 11 is stretched out outside hot flow path device 9, and this moment, the contact-making surface of contiguous block 11 and first round platform 124 was positioned at outside the hot flow path device 9.
Hollow in hollow in the hollow of the resin passage of hot flow path device 9, contiguous block 11 and hot-runner nozzle 12 cylinders and 12 1 sections spherical surface body of hot-runner nozzle or the cone 121 constitutes complete, a leak free path.Resin is by hot flow path device 9, contiguous block 11, and hot-runner nozzle 12 enters the die cavity of mould.
Thermal expansion can take place in hot-runner nozzle 12 and contiguous block 11 under the condition of heating, because contiguous block 11 is fixed in the hot flow path device and can not moves by pressing plate 13, contiguous block 11 will push hot-runner nozzle 12 and move to the mould gate direction, contiguous block 11 extruding tightly is the contacted first round platform end face 126 with it, and make the opposite side of first round platform near the end face extruding heat insulating mattress 14 tightly of mould gate, at this moment, the other end of heat insulating mattress will be tightly against the corresponding endoporus in die cavity cast gate rear end.Hot-runner nozzle can not be mobile at the axial direction of hot-runner nozzle.Meanwhile, flange 123 and first round platform 124 are producing thermal expansion in the radial direction, and the part of flange 123, first round platform, 124 outer surfaces will prop up the corresponding endoporus in die cavity cast gate rear end tightly.This moment, hot-runner nozzle 12 was axially and all be fixed in the radial direction, so the position of hot-runner nozzle also is fixed, thereby reached pinpoint purpose.
Closely contact with the end face 126 of hot-runner nozzle first round platform away from flange one side owing to contiguous block 11 in the present embodiment, so hot-runner nozzle 12 does not extend in the hot flow path device 9 near an end in hot flow path device 9 resin exits, when hot flow path device 9 under heating condition thermal expansion takes place, because hot-runner nozzle 12 has only end face 126 and contiguous block 11 to fit tightly, only because of end-face friction, so hot-runner nozzle 12 can not produce the position skew because of 9 thermal expansions of hot flow path device, reaches pinpoint purpose.Since hot-runner nozzle 12 and hot flow path device 9 between be provided with contiguous block 11, so hot-runner nozzle is more easily changed.After pressing plate 13 dismountings, remove contiguous block 11, just can easier change hot-runner nozzle.
Embodiment two:
Referring to Fig. 4, in the present embodiment, the end face of first round platform of hot-runner nozzle 12 126 directly with the hot flow path device in the closely subsides mutually of end face 127 in flow distribution plate 2 resin exits.Other parts and principle are the same, repeat no more here.
Equally, because the end face 126 direct end faces 127 with hot flow path device 9 resin exits of hot-runner nozzle first round platform closely paste mutually, so hot-runner nozzle 12 does not extend in the hot flow path device 9 near an end in hot flow path device 9 resin exits, when hot flow path device 9 under heating condition thermal expansion takes place, because hot-runner nozzle 12 has only end face 126 and the end face 127 of hot flow path device 9 to fit tightly, only because of end-face friction, so hot-runner nozzle 12 can not produce the position skew because of 9 thermal expansions of hot flow path device, reaches pinpoint purpose.
Claims (6)
1. pinpoint hot runner nozzle structure that is used for syringe part, comprise hot-runner nozzle (12), heat insulating mattress (14), it is characterized in that: hot-runner nozzle (12) comprises hollow spherical surface body or cone (121), hollow cylinder (122), flange (123) near spherical surface body or cone (121), the cylinder of hollow (122) is hollow spherical surface body or cone (121) with the contacted part of casting resin, hot-runner nozzle (12) is provided with first round platform (124) near a side of the end face (127) in the resin exit in the hot flow path device (9), be provided with second round platform (125) at first round platform (124) near flange one side, heat insulating mattress (14) offsets near the end face endoporus corresponding with die cavity cast gate rear end of flange (123) one sides, heat insulating mattress (14) offsets near flange (123) one side end faces away from flange (123) one side end faces and first round platform (124), flange (123), the part of first round platform (124) outer surface props up the corresponding endoporus in die cavity cast gate rear end tightly, the end face (126) of hot-runner nozzle first round platform directly with hot flow path device (9) in the closely subsides mutually of end face (127) in flow distribution plate (2) resin exit.
2. a kind of pinpoint hot runner nozzle structure for syringe part as claimed in claim 1 is characterized in that: described flange (123) is split-type structural with the hollow cylinder (122) of hot-runner nozzle (12).
3. a kind of pinpoint hot runner nozzle structure for syringe part as claimed in claim 1, it is characterized in that: described hot-runner nozzle (12) is provided with two groups or more, and correspondence is arranged in the front and back of hot flow path device (9) or peripheral region up and down.
4. pinpoint hot runner nozzle structure that is used for syringe part, comprise hot-runner nozzle (12), heat insulating mattress (14), it is characterized in that: hot-runner nozzle (12) comprises hollow spherical surface body or cone (121), hollow cylinder (122), flange (123) near spherical surface body or cone (121), the cylinder of hollow (122) is hollow spherical surface body or cone (121) with the contacted part of casting resin, hot-runner nozzle (12) is provided with first round platform (124) near a side of the end face (127) in the resin exit in the hot flow path device (9), be provided with second round platform (125) at first round platform (124) near flange one side, heat insulating mattress (14) offsets near the end face endoporus corresponding with die cavity cast gate rear end of flange (123) one sides, heat insulating mattress (14) offsets flange (123) away from flange (123) one side end faces and first round platform (124) near flange (123) one side end faces, the part of first round platform (124) outer surface props up the corresponding endoporus in die cavity cast gate rear end tightly; Between hot-runner nozzle (12) and the hot flow path device (9) contiguous block (11) is arranged, contiguous block (11) is partly or entirely in hot flow path device (9), contiguous block (11) closely contacts with the end face (126) of first round platform away from flange one side, when contiguous block (11) all in hot flow path device (9), contiguous block (11) overlaps with the end face (127) in hot flow path device (9) resin exit with the contact-making surface of the first round platform end face (126), when contiguous block (11) part is in hot flow path device (9), the part of contiguous block (11) is stretched out outside hot flow path device (9), and contiguous block this moment (11) is positioned at outside the hot flow path device (9) with the contact-making surface of first round platform (124).
5. a kind of pinpoint hot runner nozzle structure for syringe part as claimed in claim 2 is characterized in that: described flange (123) is split-type structural with the hollow cylinder (122) of hot-runner nozzle (12).
6. a kind of pinpoint hot runner nozzle structure for syringe part as claimed in claim 1, it is characterized in that: described hot-runner nozzle (12) is provided with two groups or more, and correspondence is arranged in the front and back of hot flow path device (9) or peripheral region up and down.
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 true CN103331869A (en) | 2013-10-02 |
| CN103331869B CN103331869B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0346900A2 (en) * | 1988-06-17 | 1989-12-20 | 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 |
| US4923387A (en) * | 1989-02-14 | 1990-05-08 | Gellert Jobst U | Injection molding system having a valve member with a ribbed insulative portion |
| 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 |
-
2013
- 2013-06-09 CN CN201310233399.3A patent/CN103331869B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0346900A2 (en) * | 1988-06-17 | 1989-12-20 | 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 |
| US4923387A (en) * | 1989-02-14 | 1990-05-08 | Gellert Jobst U | Injection molding system having a valve member with a ribbed insulative portion |
| 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 |
|---|---|
| CN103331869B (en) | 2016-09-28 |
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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 |