CN202592688U - Screw for injection molding machine - Google Patents
Screw for injection molding machine Download PDFInfo
- Publication number
- CN202592688U CN202592688U CN 201220275390 CN201220275390U CN202592688U CN 202592688 U CN202592688 U CN 202592688U CN 201220275390 CN201220275390 CN 201220275390 CN 201220275390 U CN201220275390 U CN 201220275390U CN 202592688 U CN202592688 U CN 202592688U
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- screw
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- spiral
- screw rod
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- Expired - Fee Related
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a screw for an injection molding machine. The screw for the injection machine comprises a spiral sheet and a cylinder, wherein the spiral sheet extends along the axial direction of the cylinder and forms a spiral groove and a spiral edge with the cylinder. The screw is sequentially divided into a material inlet section, a compression section and a measuring section from material inlet to material outlet. The depth of the spiral groove of the material section is larger than that of the compression section, the depth of the spiral groove of the compression section gets shallower gradually, and the depth of the spiral groove of the measuring section is smaller than that of the compression section and keeps constant. The depth of the spiral groove gets shallower gradually from the material inlet section to the measuring section, so that the screw has a proper compression ratio, melt plastic is pushed in the spiral groove faster, the phenomenon of cut-out of the middle portion of the plastic during plasticizing is ensured to be caused, quality of plastic products is improved, the thickness of the spiral sheet is increased so that the strength of the screw is improved, the screw is prevented from being twisted off during the process of pushing the plastic, and service life of the screw is prolonged.
Description
Technical field
The utility model relates to a kind of injection machine accessory, relates in particular to a kind of injection machine and uses screw rod.
Background technology
Mould is the indispensable part of product manufacturing industry, and the quality of a secondary mould design directly has influence on the quality of product.
Extensive use screw rod in injection machine, general screw rod is divided into feeding section, compression section and metering section, and feeding section is used to carry the bulk material that gets into the unfused polymer in the barrel from feed arrangement; The compression section is used for constantly plastics being compressed, and is mixing, shears, and accomplishes plastics from the transformation of solid to liquid; Metering section is used for extruding liquid homogenizing further to level pressure from screw head.
Yet the structure of general screw rod directly has influence on the quality of product, and compression ratio designs unreasonable meeting and causes in injection moulding process, occurring cutout; Sometimes the thickness low LCL of flight is big; When pan feeding, receive bigger active force at pan feeding section screw rod, be easy to twist off; In addition, the degree of depth of the spiral grooves of feeding section, compression section and metering section also has very big influence.
In view of this, be necessary the screw rod of injection machine in the prior art is improved, to address the above problem.
The utility model content
The purpose of the utility model is to provide a kind of injection machine to use screw rod.
For realizing above-mentioned utility model purpose; The utility model provides a kind of injection machine to use screw rod; Comprise flight and cylinder; Said flight extends axially and forms spiral grooves and spiral shell rib with said cylinder along said cylinder, and said screw rod is divided into pan feeding section, compression section and metering section successively from being fed to discharging, and the degree of depth of the said compression section of spiral grooves depth ratio of said pan feeding section is big; The spiral grooves degree of depth of said compression section is by going deep into shallow gradual change, and the degree of depth of the said compression section of spiral grooves depth ratio of said metering section is little and remain unchanged.
As the further improvement of the utility model, said screw rod also comprises mixing section, and an end and the spiral grooves in the said mixing section and spiral shell rib that said mixing section is arranged at said metering section evenly are intervally arranged.
As the further improvement of the utility model, the thickness of said flight is 0.3 times of said cylinder external diameter.
Compared with prior art; The beneficial effect of the utility model is: the utility model through with spiral grooves from the pan feeding section to metering section by shoaling deeply gradually; Make screw rod obtain a proper compression ratio, thereby make the plastics of fusion in spiral grooves, accelerate to advance, guarantee that plastics the cutout phenomenon occurs at the plasticizing process middle part; Improve the quality of plastic product; And the thickness that increases flight has improved the intensity of screw rod, avoids screw rod in rotating the process that advances plastics, to be twisted off, and has prolonged the service life of screw rod.
Description of drawings
Fig. 1 is the structural representation of a kind of injection machine of the utility model with screw rod;
Among the figure: 1 flight, 2 cylinders, 3 spiral grooves, 4 mixing sections, 5 metering sections, 6 compression sections, 7 pan feeding sections.
The specific embodiment
Below in conjunction with each embodiment shown in the drawings the utility model is elaborated; But should be noted that; These embodiments are not the restriction to the utility model; The function that those of ordinary skills do according to these embodiments, method, or structural equivalent transformation or substitute all belong within the protection domain of the utility model.
Please join shown in Figure 1; The utility model provides a kind of injection machine to use screw rod; Comprise flight 1 and cylinder 2; Said flight 1 extends axially and forms spiral grooves 3 and spiral shell ribs with said cylinder 2 along said cylinder 2, and said screw rod is divided into pan feeding section 7, compression section 6, metering section 5 and mixing section 4 successively from being fed to discharging, and the degree of depth of the said compression section 6 of spiral grooves 3 depth ratios of said pan feeding section 7 is big; Thereby spiral grooves 3 degree of depth of said compression section 6 produce compression ratio by going deep into shallow gradual change; The compression ratio of screw rod is 2.5:1 in the utility model, and said screw rod can guarantee in plasticizing process, not occur cutout, packing phenomenon in this compression ratio range, and the quality of plastic product is provided.The degree of depth of the said compression section 6 of spiral grooves 3 depth ratios of said metering section 5 is little and remain unchanged.Said compression section 6 can be with the molten plastic compacting, for extruding the pressure that provides certain.The thickness of said flight 1 is 0.3 times of said cylinder 2 external diameters, has improved the intensity of screw rod.An end and the spiral grooves 3 in the said mixing section 4 and spiral shell rib that said mixing section 4 is arranged at said metering section evenly are intervally arranged.
The listed a series of detailed description of preceding text only is specifying to the feasibility embodiment of the utility model; They are not the protection domain in order to restriction the utility model, allly do not break away from equivalent embodiment or the change that the utility model skill spirit done and all should be included within the protection domain of the utility model.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned example embodiment, and under the situation of spirit that does not deviate from the utility model or essential characteristic, can realize the utility model with other concrete form.Therefore; No matter from which point; All should regard embodiment as exemplary; And be nonrestrictive, the scope of the utility model is limited accompanying claims rather than above-mentioned explanation, therefore is intended to the implication of the equivalents that drops on claim and all changes in the scope are included in the utility model.Should any Reference numeral in the claim be regarded as limit related claim.
In addition; Describing according to embodiment though should be appreciated that this specification, is not that each embodiment only comprises an independently technical scheme; This narrating mode of specification only is for clarity sake; Those skilled in the art should make specification as a whole, and the technical scheme among each embodiment also can form other embodiments that it will be appreciated by those skilled in the art that through appropriate combination.
Claims (3)
1. an injection machine is used screw rod; Comprise flight and cylinder; Said flight extends axially and forms spiral grooves and spiral shell rib with said cylinder along said cylinder, and said screw rod is divided into pan feeding section, compression section and metering section successively from being fed to discharging, it is characterized in that: the degree of depth of the said compression section of spiral grooves depth ratio of said pan feeding section is big; The spiral grooves degree of depth of said compression section is by going deep into shallow gradual change, and the degree of depth of the said compression section of spiral grooves depth ratio of said metering section is little and remain unchanged.
2. injection machine according to claim 1 is used screw rod, it is characterized in that: said screw rod also comprises mixing section, and an end and the spiral grooves in the said mixing section and spiral shell rib that said mixing section is arranged at said metering section evenly are intervally arranged.
3. injection machine according to claim 1 is used screw rod, it is characterized in that: the thickness of said flight is 0.3 times of said cylinder external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275390 CN202592688U (en) | 2012-06-12 | 2012-06-12 | Screw for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275390 CN202592688U (en) | 2012-06-12 | 2012-06-12 | Screw for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202592688U true CN202592688U (en) | 2012-12-12 |
Family
ID=47310270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220275390 Expired - Fee Related CN202592688U (en) | 2012-06-12 | 2012-06-12 | Screw for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202592688U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717497A (en) * | 2012-06-12 | 2012-10-10 | 无锡天惠塑机有限公司 | Screw for injection molding machine |
| CN103921415A (en) * | 2014-03-22 | 2014-07-16 | 肖加云 | Planet mulling screw head |
| CN109897658A (en) * | 2019-04-12 | 2019-06-18 | 成都益海环保技术研究院(有限合伙) | A kind of device using cow dung production steel carbon |
-
2012
- 2012-06-12 CN CN 201220275390 patent/CN202592688U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717497A (en) * | 2012-06-12 | 2012-10-10 | 无锡天惠塑机有限公司 | Screw for injection molding machine |
| CN103921415A (en) * | 2014-03-22 | 2014-07-16 | 肖加云 | Planet mulling screw head |
| CN103921415B (en) * | 2014-03-22 | 2016-07-13 | 积康螺杆制造（上海）股份有限公司 | A kind of planet kneading screw rod head |
| CN109897658A (en) * | 2019-04-12 | 2019-06-18 | 成都益海环保技术研究院(有限合伙) | A kind of device using cow dung production steel carbon |
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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: 20121212 Termination date: 20130612 |