CN202062609U - Guiding sleeve structure of valve needle for hot runner - Google Patents
Guiding sleeve structure of valve needle for hot runner Download PDFInfo
- Publication number
- CN202062609U CN202062609U CN2011200278841U CN201120027884U CN202062609U CN 202062609 U CN202062609 U CN 202062609U CN 2011200278841 U CN2011200278841 U CN 2011200278841U CN 201120027884 U CN201120027884 U CN 201120027884U CN 202062609 U CN202062609 U CN 202062609U
- Authority
- CN
- China
- Prior art keywords
- guide pin
- pin bushing
- needle guide
- guiding sleeve
- discharging portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Provided is a guiding sleeve structure of a valve needle for a hot runner. Two ends of the guiding sleeve structure are respectively provided with an upper end portion and a lower end portion, and a plastic runner and a guiding hole runner are arranged inside the guiding sleeve structure. The plastic runner is provide with a feeding portion and a discharge portion which are vertically crossed, a bending portion is formed between the feeding portion and the discharge portion, and the bending portion is provided with an inner bending face and an outer bending face. The guiding sleeve structure is characterized in that a longitudinal section surface of the plastic runner is in a shape of a reversed L, a cross section of the plastic runner is in a shape of a circle, the feeding portion of the plastic runner is arranged in a radial direction of a guiding sleeve of the valve needle, and an material inlet is formed on an annular wall surface of the guiding sleeve of the valve needle. The discharge portion is arranged in an axial direction of the guiding sleeve of the valve needle, a material outlet is formed at the lower end portion of the guiding sleeve of the valve needle, and the sectional area of the bending portion is the same with that of the feeding portion and the discharge portion. The guiding hole runner axially penetrates through and is formed in the guiding sleeve of the valve needle from the upper end portion of the guiding sleeve of the valve needle and axially communicated with the discharge portion of the plastic runner. Fusion plastics in the plastic runner can smoothly flow into the discharge portion from the feeding portion of the plastic runner through the bending portion, and no accumulation occurs.
Description
Technical field
The utility model relates to injection-moulding plastic, promptly force required moulding material capacity to enter closed model and be placed in flow regulator in the gate channel, particularly relate to a kind of molten plastic hot runner needle guide pin bushing structure of flowing of portion within it swimmingly that makes by geat.
Background technology
The several M313588 number novel patent cases of TaiWan, China certificate number have been announced a kind of hot runner, it comprises a upper cylinder body, a lower cylinder body and a needle assembly, described upper cylinder body inside is formed with a room, and radially runs through at interval at the upper cylinder body side and to be provided with on one air admission hole road and air inlet duct once; Described lower cylinder body and described upper cylinder body are provided with at interval, described lower cylinder body radially wears and is formed with a plastic passages, and axially being equiped with a needle guide pin bushing, described needle guide pin bushing also runs through with respect to a side of the plastic passages of described lower cylinder body and forms the plastic passages that a section is inverted L shape; Described needle assembly is located in described upper cylinder body and the described lower cylinder body, drives a needle by a piston and moves back and forth, with the whether discharging of the molten plastic that flows between the plastic passages that is controlled at the needle guide pin bushing.
Wherein, the plastic passages of described needle guide pin bushing has a feeder and a discharging portion that intersects vertically, be formed with a kink between described feeder and the described discharging portion, it has an inner bending face and an outer bending side, for the molten plastic in the plastic passages that makes described lower cylinder body can stably flow in the plastic passages of needle guide pin bushing, the feeder of the plastic passages of described needle guide pin bushing, discharging portion must be designed to identical with the sectional area at kink place.
Yet, in the needle guide pin bushing of general prior art, the one inner bending face at described kink place is rectangular, another outer bending side is the cambered surface that radius of curvature is φ/2, wherein φ is the diameter of section of described feeder and described discharging portion, make that the sectional area at plastic passages kink place of described needle guide pin bushing can be less than the sectional area of its feeder and discharging portion, together with the kink place the formed dead angle, right angle of inner bending face, cause molten plastic smooth and easyly to flow, even the generation molten plastic is piled up, and then influence follow-up ejection formation, therefore, the hot runner needle guide pin bushing structure of above-mentioned prior art needs further improvement.
Summary of the invention
Technical problem to be solved in the utility model, be to remedy the sectional area of the sectional area of bending place in the plastic passages of needle guide pin bushing of above-mentioned prior art less than the straight tube place, cause molten plastic can't be in plastic passages smooth and easy mobile defective, a kind of hot runner needle guide pin bushing structure is provided.
Technical problem of the present utility model is solved by the following technical programs.
This hot runner needle guide pin bushing structure, its two ends are respectively a upper end and a bottom, and are formed with a plastic passages and a guiding duct in inside.Described plastic passages has a feeder and a discharging portion that intersects vertically, and is formed with a kink between described feeder and the described discharging portion, and it has an inner bending face and an outer bending side.
The characteristics of this hot runner needle guide pin bushing structure are:
The section of described plastic passages is inverted L shape, and the cross section is rounded, described plastic passages feeder is along the radially setting of needle guide pin bushing, on the ring wall face of needle guide pin bushing, be formed with a feeding mouth, described discharging portion is along the axial setting of needle guide pin bushing, be formed with a discharging opening in the bottom of needle guide pin bushing, described feeder is identical with the sectional area of discharging portion, the radius of curvature of the inner bending face of described kink is 1mm, the radius of curvature of described outer bending side is (1+ φ) mm, wherein φ is the diameter of section of described feeder and described discharging portion, and promptly the sectional area at kink place is identical with the sectional area of feeder and discharging portion.
Described guiding duct is axially run through by the upper end of needle guide pin bushing and is molded in the needle guide pin bushing, and axially communicates with the discharging portion of described plastic passages.
Technical problem of the present utility model is solved by following further technical scheme.
Described φ value is 5mm～30mm.
The beneficial effect that the utility model is compared with the prior art is:
The sectional area at the kink place of the plastic passages of the utility model needle guide pin bushing is identical with the sectional area at feeder and discharging portion place, molten plastic in the plastic passages of the needle guide pin bushing of hot runner lower cylinder body, can be swimmingly flow in the discharging portion through kink, can not produce accumulation by the feeder of plastic passages.
Description of drawings
Fig. 1 is the stereogram of the utility model specific embodiment;
Fig. 2 is the axial section of the utility model specific embodiment;
Fig. 3 is that the utility model specific embodiment is applied in the axial section in the hot runner.
The specific embodiment
Below in conjunction with the specific embodiment and contrast accompanying drawing the utility model is described.
The needle guide pin bushing of this specific embodiment as shown in Figure 3 is arranged in the lower cylinder body (30) of hot runner, lower cylinder body (30) radially wears and is formed with a plastic passages (31), it is rounded duct, a cross section, the two ends of needle guide pin bushing are respectively a upper end and a bottom, and be formed with a plastic passages (10) and a guiding duct (20) in inside, wherein the section of plastic passages (10) is inverted L shape, and the cross section is rounded, comprise a feeder (11), one discharging portion (12) and a kink (13), feeder (11) is along the radially setting of needle guide pin bushing (10), on the ring wall face of needle guide pin bushing (10), be formed with a feeding mouth, feeding mouth communicates with the plastic passages (31) of lower cylinder body (30), the vertical feeder (11) of discharging portion (12), axial setting along needle guide pin bushing (10), bottom at needle guide pin bushing (10) is formed with a discharging opening, the sectional area of the sectional area of feeder (11) and discharging portion (12) and the plastic passages (31) of lower cylinder body (30) is identical, kink (13) is formed between feeder (11) and the discharging portion (12), it has an inner bending face (131) and an outer bending side (132), the radius of curvature (R1) of the inner bending face (131) of kink (13) is 1mm, the radius of curvature (R2) of outer bending side (132) is (1+ φ) mm, wherein φ is the diameter of section (D1 of feeder (11) and discharging portion (12), D2), its value is for 5mm～30mm, and promptly the sectional area located of kink (13) is identical with the sectional area of feeder (11) and discharging portion (12).Guiding duct (20) is axially run through by the upper end of needle guide pin bushing and is molded in the needle guide pin bushing, and axially communicate with the discharging portion (12) of the plastic passages (10) of needle guide pin bushing, guiding duct (20) can be for a needle (40) closely and can be arranged in therebetween with relatively moving, and be provided with along the discharging portion (12) of needle guide pin bushing kink (11).
The plastic passages (31) of the plastics that are molten condition through lower cylinder body (30) flows in the plastic passages (10) of needle guide pin bushing, can be swimmingly flowed in the discharging portion (12) through kink (13) by the feeder (11) of plastic passages (10), can not produce accumulation.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design, make some alternative or obvious modification that are equal to; and performance or purposes are identical, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.
Claims (2)
1. hot runner needle guide pin bushing structure, its two ends are respectively a upper end and a bottom, and are formed with a plastic passages and a guiding duct in inside.Described plastic passages has a feeder and a discharging portion that intersects vertically, and is formed with a kink between described feeder and the described discharging portion, and it has an inner bending face and an outer bending side, it is characterized in that:
The section of described plastic passages is inverted L shape, and the cross section is rounded, described plastic passages feeder is along the radially setting of needle guide pin bushing, on the ring wall face of needle guide pin bushing, be formed with a feeding mouth, described discharging portion is along the axial setting of needle guide pin bushing, be formed with a discharging opening in the bottom of needle guide pin bushing, described feeder is identical with the sectional area of discharging portion, the radius of curvature of the inner bending face of described kink is 1mm, the radius of curvature of described outer bending side is (1+ φ) mm, wherein φ is the diameter of section of described feeder and described discharging portion, and promptly the sectional area at kink place is identical with the sectional area of feeder and discharging portion;
Described guiding duct is axially run through by the upper end of needle guide pin bushing and is molded in the needle guide pin bushing, and axially communicates with the discharging portion of described plastic passages.
2. hot runner needle guide pin bushing structure as claimed in claim 1 is characterized in that:
Described φ value is 5mm～30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200278841U CN202062609U (en) | 2011-01-26 | 2011-01-26 | Guiding sleeve structure of valve needle for hot runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200278841U CN202062609U (en) | 2011-01-26 | 2011-01-26 | Guiding sleeve structure of valve needle for hot runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202062609U true CN202062609U (en) | 2011-12-07 |
Family
ID=45056486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200278841U Expired - Fee Related CN202062609U (en) | 2011-01-26 | 2011-01-26 | Guiding sleeve structure of valve needle for hot runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202062609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278255A (en) * | 2018-10-08 | 2019-01-29 | 柳道万和(苏州)热流道系统有限公司 | Plug |
| TWI731238B (en) * | 2018-04-27 | 2021-06-21 | 南亞塑膠工業股份有限公司 | Manufacturing method of polyvinyl chloride molded articles |
-
2011
- 2011-01-26 CN CN2011200278841U patent/CN202062609U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI731238B (en) * | 2018-04-27 | 2021-06-21 | 南亞塑膠工業股份有限公司 | Manufacturing method of polyvinyl chloride molded articles |
| CN109278255A (en) * | 2018-10-08 | 2019-01-29 | 柳道万和(苏州)热流道系统有限公司 | Plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120126 |