CN112391688B - Melt and spout cloth extruder screw rod feed cylinder - Google Patents
Melt and spout cloth extruder screw rod feed cylinder Download PDFInfo
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- CN112391688B CN112391688B CN202011210363.XA CN202011210363A CN112391688B CN 112391688 B CN112391688 B CN 112391688B CN 202011210363 A CN202011210363 A CN 202011210363A CN 112391688 B CN112391688 B CN 112391688B
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- thread section
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- spiral thread
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a melt-blown fabric extruder screw charging barrel, which comprises a charging barrel sleeved outside a screw, wherein the screw comprises a central rotating shaft and a spiral thread section outside the central rotating shaft, the axial section of the spiral thread section comprises a working surface which is perpendicular to the axial central line of the central rotating shaft and used for extruding melt-blown fabric, the top surface and the back surface of the working surface, a flexible nesting sleeve is arranged between the outside of the central rotating shaft and the spiral thread section, a spiral groove is arranged in the flexible nesting sleeve, and the spiral thread section is connected with the central rotating shaft through the spiral groove embedded in the flexible nesting sleeve; the top surface of the axial cross section of the spiral thread section is inclined downwards from the working surface to the back surface, and a recessed backflow groove is formed in the working surface of the axial cross section of the spiral thread section. The invention can solve the problems that the screw charging barrel of the existing melt-blown fabric extruder has poor extrusion effect on melt-blown liquid and influences the extrusion efficiency.
Description
Technical Field
The invention relates to the technical field of manufacturing of medical mask production equipment, in particular to a screw charging barrel for a melt-blown fabric extruder.
Background
The existing screw charging barrel for the melt-blown fabric extruder generally comprises a charging barrel sleeved outside a screw, a central rotating shaft and a spiral thread section of the screw are integrated into a whole by the same metal material, the screw is generally processed into the spiral thread section by a round rod with large diameter by fine grinding, so that the axial section of the spiral thread section of the screw is generally rectangular vertical to the axial central line of the central rotating shaft, namely the screw comprises a working surface, a top surface and a back surface of the working surface, which are vertical to the axial central line of the central rotating shaft and used for extruding melt-blown fabric, and the spiral thread section on the screw extrudes the melt-blown fabric from one end of the charging barrel to the other end of the charging barrel by rotating the screw. When the melt-blown liquid is extruded by the spiral thread section with the rectangular axial section, the liquid surface is extruded by the rectangular thread, and the side surface of the rectangle, which is in contact with the liquid surface, is a plane, so that the melt-blown liquid easily enters the top surface of the thread rectangle, namely a gap between the charging barrel and the screw, and is difficult to extrude and convey by the thread with the rectangular axial section, so that when the screw rotates more, the melt-blown liquid remained in the charging barrel is more, the extrusion effect is poor, and the production efficiency is influenced.
Disclosure of Invention
The invention aims to solve the problem that the extrusion efficiency is influenced because the conventional melt-blown fabric extruder screw barrel has poor melt-blown fabric extruding effect.
In order to solve the problems, the technical scheme of the invention is as follows: the melt-blown fabric extruder screw barrel comprises a barrel sleeved outside a screw, wherein the screw comprises a central rotating shaft and a spiral thread section outside the central rotating shaft, the axial section of the spiral thread section comprises a working surface which is perpendicular to the axial central line of the central rotating shaft and used for extruding melt-blown fabric, the top surface and the back surface of the working surface, a flexible nesting sleeve is arranged between the outside of the central rotating shaft and the spiral thread section, a spiral groove is formed in the flexible nesting sleeve, and the spiral thread section is connected with the central rotating shaft through the spiral groove embedded in the flexible nesting sleeve; the top surface of the axial cross section of the spiral thread section is inclined downwards from the working surface to the back surface, and a recessed backflow groove is formed in the working surface of the axial cross section of the spiral thread section.
In the above technical solution, a more specific solution may be: the backflow groove is an arc-shaped groove.
Further: the back surface of the axial section of the helical thread segment is inclined downwards from the top surface to form a wedge-shaped insert inserted into the flexible nested helical groove.
And further: the working surface of the axial cross section of the helical thread segment is inclined inwardly from the portion below the return groove.
And further: the flexible nesting is flexible nesting of elastic polyvinyl chloride.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the melt-blown fabric extruder screw barrel adopts a split screw, the central rotating shaft and the spiral thread section are connected by the flexible nesting, the extrusion effect of the spiral thread section is enhanced by the flexible force of the flexible nesting, the spiral thread sections with different axial sections can be replaced when different purposes are used, the universality is improved, or the whole screw does not need to be replaced when the easily worn spiral thread section is worn, only the spiral thread section is replaced, and the process difficulty and the cost are lower when only the spiral thread section is repaired than the whole screw; the backflow groove and the working face top on the working face are combined to be the highest position of the inclined top face, so that melt-blown liquid can flow back at the working face without overflowing to the top face, the inclination of the top face forms a backflow face, the melt-blown liquid is not easy to gather on the top face and is easy to be taken away by the next ring thread, and the design of the backflow groove and the inclined top face enables the working face top at the sharpest position to form a cutting edge to cut off the liquid level of the melt-blown liquid, the melt-blown liquid cut off on the working face is smoothly taken away, the extrusion effect of the melt-blown liquid is greatly improved, and the production efficiency is accelerated;
2. The backflow groove of the spiral thread section of the screw material cylinder of the melt-blown fabric extruder adopts the arc-shaped groove, so that the backflow effect is increased to the maximum extent, and the backflow obstruction is reduced; the back surface of the axial section of the spiral thread section is inclined downwards from the top surface to form a wedge-shaped insert inserted into the flexible nested spiral groove, so that the whole spiral thread section is convenient to disassemble and assemble; the working surface of the axial section of the spiral thread section is inclined inwards from the part below the reflux groove to form a reflux slope, so that the reflux amount is increased, and the extrusion effect is improved; the flexible nesting of the elastic polyvinyl chloride increases the elasticity of the nesting and ensures the connection strength of the nesting and the spiral thread section;
the melt-blown fabric extruder screw barrel is good in extrusion effect, good in universality, easy to maintain and process and easy to popularize.
Drawings
FIG. 1 is a front view of an embodiment of the invention;
FIG. 2 is an enlarged view at A of FIG. 1;
wherein: the device comprises a charging barrel 1, a central rotating shaft 2, an elastic nesting 3, a spiral groove 3-1, a spiral thread section 4, a working surface 4-1, a top surface 4-2, a back surface 4-3 and a reflux groove 4-4.
Detailed Description
The embodiments of the invention will be described in further detail with reference to the accompanying drawings:
the melt-blown fabric extruder screw charging barrel shown in figures 1 to 2 comprises a charging barrel 1 sleeved outside a screw, the screw comprises a central rotating shaft 2 and a spiral thread section 4 outside the central rotating shaft, a flexible nesting 3 is arranged between the outside of the central rotating shaft 2 and the spiral thread section 4, the flexible nesting 3 is provided with a spiral groove 3-1, the spiral thread section 4 is connected with the central rotating shaft 2 by embedding the spiral groove 3-1 of the flexible nesting, a split screw is adopted, the central rotating shaft 2 and the spiral thread section 4 are connected by the flexible nesting 3, the extrusion effect of the spiral thread section 4 is enhanced by the flexible force of the flexible nesting 3, the spiral thread sections 4 with different axial cross sections can be replaced when the screw sections with different purposes are used, the universality is improved, or the whole screw is not needed to be replaced when the easily worn spiral thread section is worn, only the spiral thread section is replaced, and the process difficulty of only repairing the spiral thread section is smaller than that of the whole screw, the cost is less.
The axial section of the spiral thread section 4 comprises a working surface 4-1 which is perpendicular to the axial central line of the central rotating shaft 2 and used for extruding the melt-blown liquid, a top surface 4-2 and a back surface 4-3 of the working surface, the top surface 4-2 of the axial section of the spiral thread section 4 inclines downwards from the working surface 4-1 to the back surface 4-3, a concave backflow groove 4-4 is arranged on the working surface 4-1 of the axial section of the spiral thread section 4, the backflow groove 4-4 on the working surface and the top of the working surface are the highest position of the inclined top surface, so that the melt-blown liquid can flow back at the working surface 4-1 without overflowing to the top surface 4-2, the inclination of the top surface 4-2 forms a backflow surface, the melt-blown liquid is not easy to gather at the top surface 4-2 and is easy to be taken away by the next ring thread, and the backflow groove 4-4 and the inclined top surface 4-2 are designed, the working surface top at the sharpest position forms a cutting edge to cut off the melt-blown liquid level, so that the melt-blown liquid cut off on the working surface is smoothly taken away, the extrusion effect of the melt-blown liquid is greatly improved, and the production efficiency is accelerated.
The reflux groove 4-4 is an arc groove, which increases the reflux effect to the utmost extent and reduces the reflux obstruction. The back surface 4-3 of the axial section of the spiral thread section is inclined downwards from the top surface 4-2 to form a wedge-shaped insert inserted into the flexible nested spiral groove 3-1, so that the whole spiral thread section can be conveniently disassembled and assembled. The working surface 4-1 of the axial section of the spiral thread section inclines inwards from the part below the backflow groove 4-4, namely inclines towards the back surface to form a backflow slope, the backflow amount is increased, and the extrusion effect is improved. The flexible nesting 3 is flexible nesting of elastic polyvinyl chloride, and the flexible nesting of the elastic polyvinyl chloride increases the elasticity of the nesting and ensures the connection strength of the nesting and the spiral thread section.
The melt-blown fabric extruder screw barrel is good in extrusion effect, good in universality, easy to maintain and process and easy to popularize.
Claims (2)
1. The utility model provides a melt-blown fabric extruder screw rod feed cylinder, includes the feed cylinder of screw rod overcoat, the screw rod includes central pivot and its external screw thread section, the axial cross-section of screw thread section is including the perpendicular to the axial centerline of central pivot is used for extruding the working face of melt-blown liquid, the back of top surface and working face, its characterized in that: a flexible nesting sleeve is arranged between the outside of the central rotating shaft and the spiral thread section, a spiral groove is formed in the flexible nesting sleeve, and the spiral thread section is connected with the central rotating shaft through the spiral groove embedded in the flexible nesting sleeve; the top surface of the axial section of the spiral thread section is downwards inclined from the working surface to the back surface, and a recessed backflow groove is formed in the working surface of the axial section of the spiral thread section;
the reflux groove is an arc-shaped groove;
the back surface of the axial section of the spiral thread section is inclined downwards from the top surface to form a wedge-shaped insert inserted into the flexible nested spiral groove;
the working surface of the axial cross section of the helical thread segment is inclined inwardly from the portion below the return groove.
2. The meltblown fabric extruder screw cartridge of claim 1, wherein: the flexible nesting is flexible nesting of elastic polyvinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210363.XA CN112391688B (en) | 2020-11-03 | 2020-11-03 | Melt and spout cloth extruder screw rod feed cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011210363.XA CN112391688B (en) | 2020-11-03 | 2020-11-03 | Melt and spout cloth extruder screw rod feed cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112391688A CN112391688A (en) | 2021-02-23 |
| CN112391688B true CN112391688B (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011210363.XA Active CN112391688B (en) | 2020-11-03 | 2020-11-03 | Melt and spout cloth extruder screw rod feed cylinder |
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| CN112391688A (en) | 2021-02-23 |
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