CN204095065U - A kind of highlighted special needle - Google Patents
A kind of highlighted special needle Download PDFInfo
- Publication number
- CN204095065U CN204095065U CN201420244639.XU CN201420244639U CN204095065U CN 204095065 U CN204095065 U CN 204095065U CN 201420244639 U CN201420244639 U CN 201420244639U CN 204095065 U CN204095065 U CN 204095065U
- Authority
- CN
- China
- Prior art keywords
- needle
- utility
- model
- needle head
- head
- 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 - Lifetime
Links
- 238000010992 reflux Methods 0.000 claims abstract description 14
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a kind of highlighted special needle, comprise needle body and cone shape needle head; Described needle body is provided with reflux section near a section of needle head, and described reflux section diameter is less than the diameter of described needle body.By the way, the utility model can prevent from product, leave Bai Si or the sun print during injection moulding, can reduce injection pressure simultaneously.
Description
Technical field
The utility model relates to needle field, particularly relates to a kind of highlighted special needle.
Background technology
Existing needle is cylindrical, needle has feed chute, the gap of needle and hot mouth core cooperation place is too small, because needle feed chute is little during needle sealing, the cold plastics of needle head can not be return rapidly, when glue is filled in needle retrogressing, can the cold moulding material of needle head be filled in product, Bai Si or sun print can be left on product; Pressure during injection moulding is also very large, affects product quality.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of highlighted special needle, can prevent from product, leave Bai Si or the sun print during injection moulding, and product surface quality is good, can reduce injection pressure simultaneously.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: provide a kind of highlighted special needle, comprise needle body and cone shape needle head; Described needle body is provided with reflux section near a section of needle head, and described reflux section diameter is less than the diameter of described needle body.
Preferably, described needle head has backflash, described backflash is uniformly distributed along needle head is circumferential.
Preferably, intermediate incline is provided with between described reflux section and needle head.
The beneficial effects of the utility model are: the utility model can prevent from product, leave Bai Si or the sun print during injection moulding, improves the quality of products.
Accompanying drawing explanation
Fig. 1 is the structural representation of needle in prior art;
Structural representation when Fig. 2 is a kind of highlighted special needle sealing state of the utility model;
Structural representation when Fig. 3 is shown a kind of highlighted special needle plastic emitting state;
In accompanying drawing, the mark of each parts is as follows: 1, needle body; 2, needle head; 3, hot mouth core; 4, reflux section.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Refer to Fig. 1 to Fig. 3, the utility model embodiment comprises:
A kind of highlighted special needle, comprises needle body 1 and cone shape needle head 2; Described highlighted special needle is arranged in the inner chamber of hot mouth core 3, needle body 1 and needle head 2 move axially in hot mouth core 3, described needle body 1 is provided with reflux section 4 near a section of needle head 2, described reflux section 4 diameter is less than the diameter of described needle body 4, described needle head 2 has backflash, described backflash is uniformly distributed along needle head is circumferential, and be provided with intermediate incline between described reflux section 4 and needle head 2, intermediate incline engages with backflash.Needle head 2 and hot mouth core 3 cooperation place, owing to being provided with backflash and reflux section 4, so gap is very large, during needle sealing, because needle reflux section diameter is little, the cold plastics of needle head can be return rapidly, when glue is filled in needle retrogressing, can the cold moulding material strip of needle head be got back in TOP-TIP, during next filling, cold moulding material reheats in hot flow path, reinject in product, plastics temperature is consistent, so can not leave Bai Si or sun print on product, can also injection pressure be reduced simultaneously, improve the quality of products.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. a highlighted special needle, comprises needle body and cone shape needle head; Described needle body is provided with reflux section near a section of needle head, and described reflux section diameter is less than the diameter of described needle body; It is characterized in that: described needle head has some backflashes, described backflash is uniformly distributed along needle head is circumferential; Intermediate incline is provided with between described reflux section and needle head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244639.XU CN204095065U (en) | 2014-05-14 | 2014-05-14 | A kind of highlighted special needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244639.XU CN204095065U (en) | 2014-05-14 | 2014-05-14 | A kind of highlighted special needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204095065U true CN204095065U (en) | 2015-01-14 |
Family
ID=52263527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420244639.XU Expired - Lifetime CN204095065U (en) | 2014-05-14 | 2014-05-14 | A kind of highlighted special needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204095065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582784A (en) * | 2018-05-31 | 2018-09-28 | 天津职业技术师范大学 | A kind of 3D printing head for material extrusion molding |
-
2014
- 2014-05-14 CN CN201420244639.XU patent/CN204095065U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582784A (en) * | 2018-05-31 | 2018-09-28 | 天津职业技术师范大学 | A kind of 3D printing head for material extrusion molding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150114 |