CN214982956U - Screw rod structure for injection molding machine - Google Patents
Screw rod structure for injection molding machine Download PDFInfo
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- CN214982956U CN214982956U CN202121055180.5U CN202121055180U CN214982956U CN 214982956 U CN214982956 U CN 214982956U CN 202121055180 U CN202121055180 U CN 202121055180U CN 214982956 U CN214982956 U CN 214982956U
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Abstract
The utility model provides a screw rod structure for injection molding machine, includes the body of rod and sets up the spiral arris on the body of rod, and the spiral arris divide into feeding section, melting section and ejection of compact section, and melting section spiral arris is two spiral arriss, and feeding section spiral arris is single spiral arris, is provided with spiral arris recess on the surface of feeding section spiral arris, and the screw direction and the spiral interval of spiral arris recess all keep unanimous with feeding section spiral arris, and the rear side wall of spiral arris recess is the inclined plane that exits easily after enabling the material that gets into spiral arris recess to melt. The utility model has the advantages that: the volume of getting into of increase material makes the material that gets into the feeding section receive bigger extrusion force to make the material melt more fast and flow forward than among the prior art, the spiral shell arris recess can avoid piling up in the spiral shell arris recess, withdraws from simultaneously backward can increase the mutual extrusion of material and increase the flow distance of material in the feeding section, make the material fully extrude the bubble, reach the state of evenly compacting.
Description
Technical Field
The utility model relates to a screw rod preparation technical field especially indicates a screw rod structure for injection molding machine.
Background
The present chinese utility model patent with a patent number CN201120358425.1 entitled "a screw rod for in injection molding machine" discloses a screw rod for in injection molding machine, including the body of rod, this body of rod comprises reinforced section, melting section, homogenization section, extrusion section in proper order reinforced section, melting section, homogenization section, extrusion section are last to be provided with spiral arris, its characterized in that respectively: the spiral rib comprises a first spiral rib section, a second spiral rib section and a third spiral rib section, the spiral rib of the second spiral rib section is double spiral ribs, and the distance between the double spiral ribs is 2-2.5 mm. The utility model has the advantages that: the screw homogenizing section is provided with double screw ridges, each double screw ridge comprises two complete screw ridges which are connected with each other, and the structure can enable materials to be heated uniformly when a screw machine barrel operates, so that the sol speed is increased, the materials are not easy to burn, and therefore, the extruded materials have no black spots. However, the screw is insufficient in material extrusion at the feed section when conveying the material, and therefore the structure of the screw needs to be further improved.
Disclosure of Invention
The utility model aims to solve the technical problem that an extrusion force that can increase the material and receive in feeding section department is provided to above-mentioned prior art current situation, makes the material get into molten state more fast, the effectual screw rod structure that is used for the injection molding machine of material treatment.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: this a screw rod structure for injection molding machine, including the body of rod and the spiral shell arris of setting on the body of rod, the spiral shell arris divide into feeding section, melting section and ejection of compact section, and melting section spiral shell arris is two spiral arriss, its characterized in that: the screw ridge of the feeding section is a single screw ridge, a screw ridge groove is formed in the outer surface of the screw ridge of the feeding section, the spiral direction and the spiral distance of the screw ridge groove are consistent with those of the screw ridge of the feeding section, and the rear side wall of the screw ridge groove is an inclined plane which enables materials entering the screw ridge groove to be easily withdrawn after being melted.
As an improvement, the axial section opening of the screw ridge groove is positioned in the middle of the top side of the axial section of the screw ridge of the feeding section, and the width of the axial section opening of the screw ridge groove is half of the width of the top side of the axial section of the screw ridge of the feeding section.
The further improvement is that the outer surface of the screw ridge of the feeding section is covered with a protective layer which can enhance the toughness and the wear resistance of the screw ridge of the feeding section.
The axial section of the screw edge of the feeding section is rectangular.
As an improvement, the melting section screw rib comprises a first screw rib and a second screw rib which are arranged at intervals, and the screw rib width of the second screw rib is smaller than that of the first screw rib.
In a further improvement, the distance between the first spiral edge and the second spiral edge of the corresponding spiral section is gradually increased.
In a further improvement, the axial sections of the first screw edge and the second screw edge are both rectangular, and the heights of the first screw edge and the second screw edge are the same.
The further improvement is that the spiral edges of the discharging section are single spiral edges, and the spiral edge spacing of the spiral edges of the discharging section is smaller than the spiral edge spacing of the second spiral edges.
In a further improvement, the end part of the second spiral edge is connected with the end part of the spiral edge of the discharging section.
In a further improvement, the end of the first screw rib is connected with the end of the screw rib of the feeding section.
Compared with the prior art, the utility model has the advantages of: through increasing the recess on the spiral shell arris, under the condition that does not change the screw rod occupation volume in the barrel, increase the entering volume of material, make the material that gets into the feeding section receive bigger extrusion force, thereby make the material melt more fast and flow forward among the prior art, the material that gets into spiral shell arris recess can withdraw from spiral shell arris recess along the back lateral wall of spiral shell arris recess when flowing, avoid piling up in spiral shell arris recess, withdraw from backward simultaneously and increase the mutual extrusion of material and increase the flow distance of material in the feeding section, make the material fully extrude the bubble, reach the state of evenly compacting.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line D-D of FIG. 2;
fig. 4 is an enlarged view of a portion I in fig. 3.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 4, the screw structure for an injection molding machine of the present embodiment includes a rod body 1 and a screw ridge disposed on the rod body 1, the screw ridge is divided into a feeding section a, a melting section B and a discharging section C, the melting section screw ridge is a double screw ridge, the feeding section screw ridge 11 is a single screw ridge, a screw ridge groove 111 is disposed on an outer surface of the feeding section screw ridge 11, both a spiral direction and a spiral pitch of the screw ridge groove 111 are consistent with those of the feeding section screw ridge 11, and a rear side wall of the screw ridge groove 111 is an inclined surface which enables a material entering the screw ridge groove 111 to be easily withdrawn after being melted.
The axial cross-sectional opening of the flight groove 111 is located in the middle of the top side of the axial cross-section of the feed section flight 11, and the width of the axial cross-sectional opening of the flight groove 111 is one half of the width of the top side of the axial cross-section of the feed section flight 11. The outer surface of the feed section flight 11 is covered with a protective layer 112 that enhances the feed section flight toughness and wear resistance. The feed section flight 11 is rectangular in axial cross-section.
The melting section screw rib comprises a first screw rib 12 and a second screw rib 13 which are arranged at intervals, and the screw rib width of the second screw rib 13 is smaller than that of the first screw rib 12. The distance between the first and second ridges 12, 13 of the corresponding spiral section gradually increases. The axial cross sections of the first screw rib 12 and the second screw rib 13 are both rectangular, and the heights of the first screw rib 12 and the second screw rib 13 are the same. The discharging section screw ribs 14 are single screw ribs, and the screw rib spacing of the discharging section screw ribs 14 is smaller than the screw rib spacing of the second screw ribs 13. The end of the second screw edge 13 is connected with the end of the discharging section screw edge 14. The end of the first flight 12 is connected to the end of the feed section flight 11.
Claims (10)
1. The utility model provides a screw rod structure for injection molding machine, includes the body of rod (1) and sets up the spiral shell arris on the body of rod (1), the spiral shell arris divide into feeding section (A), melting section (B) and ejection of compact section (C), and melting section spiral shell arris is two spiral shell arriss, its characterized in that: the feeding section screw rib (11) is a single screw rib, a screw rib groove (111) is formed in the outer surface of the feeding section screw rib (11), the spiral direction and the spiral distance of the screw rib groove (111) are consistent with those of the feeding section screw rib (11), and the rear side wall of the screw rib groove (111) is an inclined surface which enables materials entering the screw rib groove (111) to be easily withdrawn after being melted.
2. The screw structure according to claim 1, wherein: the axial section opening of the screw ridge groove (111) is positioned in the middle of the top side of the axial section of the screw ridge (11) of the feeding section, and the width of the axial section opening of the screw ridge groove (111) is half of the width of the top side of the axial section of the screw ridge (11) of the feeding section.
3. The screw structure according to claim 2, wherein: the outer surface of the feed section screw rib (11) is covered with a protective layer (112) which can enhance the toughness and the wear resistance of the feed section screw rib.
4. The screw structure according to claim 2, wherein: the axial cross section of the screw edge (11) of the feeding section is rectangular.
5. The screw structure according to any one of claims 1 to 3, wherein: the melting section screw rib comprises a first screw rib (12) and a second screw rib (13) which are arranged at intervals, and the screw rib width of the second screw rib (13) is smaller than that of the first screw rib (12).
6. The screw structure according to claim 4, wherein: the distance between the first and second ridges (12, 13) of the respective spiral sections increases.
7. The screw structure according to claim 5, wherein: the axial sections of the first screw rib (12) and the second screw rib (13) are both rectangular, and the heights of the first screw rib (12) and the second screw rib (13) are the same.
8. The screw structure according to claim 4, wherein: the discharging section screw ribs (14) are single screw ribs, and the screw rib spacing of the discharging section screw ribs (14) is smaller than the screw rib spacing of the second screw ribs (13).
9. The screw structure according to claim 8, wherein: the end part of the second spiral rib (13) is connected with the end part of the discharge section spiral rib (14).
10. The screw structure according to claim 7, wherein: the end part of the first screw rib (12) is connected with the end part of the feed section screw rib (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121055180.5U CN214982956U (en) | 2021-05-17 | 2021-05-17 | Screw rod structure for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121055180.5U CN214982956U (en) | 2021-05-17 | 2021-05-17 | Screw rod structure for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214982956U true CN214982956U (en) | 2021-12-03 |
Family
ID=79131421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121055180.5U Active CN214982956U (en) | 2021-05-17 | 2021-05-17 | Screw rod structure for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214982956U (en) |
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2021
- 2021-05-17 CN CN202121055180.5U patent/CN214982956U/en active Active
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