CN214830808U

CN214830808U - Melt-blown die head composite set

Info

Publication number: CN214830808U
Application number: CN202023303272.9U
Authority: CN
Inventors: 周海林; 杨茂圣
Original assignee: Zhenjiang Yunfeng Power Material Co ltd
Current assignee: Zhenjiang Yunfeng Power Material Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-23
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a melt-blown die head composite set, including extrusion tooling, extrusion tooling is connected with and spouts a die head, be equipped with the fuse-element runner in the extrusion tooling, fuse-element runner intercommunication has the subchannel, the subchannel includes the homogenization section of perpendicular setting and the leading-in section of annular distribution, it can dismantle and be connected with the orifice die head to spout a die head, it is ring shape to spout a die head and orifice die head, and the orifice die head setting is in a die head outside, it is equipped with the blowout runner of annular distribution in the die head to spout, it is equipped with the air flue to spout the interior symmetry of die head, it is equipped with the die point to spout a die head lateral surface, orifice die head medial surface is equipped with the round platform groove, form between round platform groove and the die point and pull the air cavity, the air cavity is pulled in the output intercommunication of air flue, orifice die head lateral surface is equipped with the spinneret orifice that communicates with the round platform groove. The utility model discloses can make things convenient for change die head subassembly and filter screen in the clearance, have simple structure, spout the even advantage of silk.

Description

Melt-blown die head composite set

Technical Field

The utility model relates to a melt and spout production technical field, concretely relates to melt and spout die head composite set.

Background

The melt-blown die head is mainly suitable for producing materials such as PET, PBT, PA, PP, PE, PTFE, PS, EMA, EVA, TPU, carbon fiber and the like, extruded high polymer melt is rapidly subjected to high-power stretching solidification forming through high-speed hot air flow, the polymer melt fine flow extruded from a spinneret orifice of the die head is drawn by high-speed hot air, superfine fibers are formed and sprayed on a collecting device, and then the superfine fibers are bonded by the melt-blown die head to form non-woven fabric, namely melt-blown fabric, and the melt-blown fabric is frequently used as a sound-absorbing and filtering material. Among the prior art, the spinneret orifice sets up on the spinneret of coplanar, there is the uneven condition of spinneret easily during melt-blown production, the quantity of spouting that leads to each spinneret orifice is inconsistent because the resistance or the air current size of spinneret orifice differ, and to different fibre and fiber size, need change corresponding die head, perhaps when needing regularly to clear up spinneret die head or filter screen, current die head system architecture is complicated, when clearing up the change to die head subassembly or filter screen, its dismantlement installation procedure is very refuted miscellaneous, be difficult to satisfy the operation requirement.

SUMMERY OF THE UTILITY MODEL

For solving the problem that proposes among the above-mentioned background art, the utility model provides a melt-blown die head composite set can make things convenient for in clearance change die head subassembly and filter screen, has simple structure, spouts the even advantage of silk.

The utility model provides a following technical scheme:

a combined device of a melt-blowing die head comprises an extrusion die, wherein the extrusion die is connected with a melt-blowing die head, the extrusion die is vertically arranged, the melt-blowing die head is fixedly connected below the extrusion die, a melt flow passage is arranged in the extrusion die and is communicated with a branch flow passage, the branch flow passage comprises a vertically arranged homogenizing section and a guide-in section which is annularly distributed, the melt-blowing die head is detachably connected with a jet orifice die head, the melt-blowing die head and the jet orifice die head are both annular, the jet orifice die head is arranged on the outer side of the melt-blowing die head, jet flow passages which are annularly distributed and are communicated with the branch flow passage are arranged in the melt-blowing die head, air passages are symmetrically arranged along the jet flow passage in the melt-blowing die head, the outer side surface of the melt-blowing die head is provided with an outward-protruded die tip, and the inner side surface of the jet orifice die head is provided with a circular truncated cone groove with a size larger than the die tip, a traction air cavity with the gradually reduced section size is formed between the circular platform groove and the die tip, the output end of the air passage is communicated with the traction air cavity, and a spinneret orifice communicated with the minimum caliber of the circular platform groove is arranged on the outer side surface of the spinneret orifice die head.

Preferably, the inner side surface of the spinning die head is provided with a filtering ring, the filtering ring is internally provided with a filtering cavity which is communicated with the air passage in an annular distribution manner, and a filter element is arranged in the filtering cavity.

Preferably, the input end of the filter cavity is communicated with an air pipe, the input end of the air pipe is connected with an air flow distributor, and the air flow distributor introduces high-speed hot air into the air pipe.

Preferably, a metering pump is installed at the tail end of the channel for inputting the melt flow channel into the branch flow channel.

Preferably, the ejection flow channel comprises a connecting section communicated with the introduction section and a horizontal section, and the horizontal section and the spinneret orifice are coaxially arranged.

Preferably, the upper end surface and the lower end surface of the spinning die head are both provided with a first flange, the upper end surface and the lower end surface of the spinning die head are both provided with a second flange, and the first flange is connected with the second flange through a bolt.

Preferably, the size and caliber of the flow channel of the homogenizing section, the introducing section and the connecting section are the same.

Preferably, the number of the branch flow passages, the ejection flow passages, and the spinneret holes is the same.

Preferably, the nozzle mould consists of two identical half rings fixedly connected through bolts.

The utility model has the advantages that: the circular structure is convenient for disassembling and separating the die head assembly, the orifice die head and the spinning die head can be separated by disassembling bolts at the connecting parts of the two semi-rings of the orifice die head and the edge between the first flange and the second flange, different fibers and melt-blown fabrics with different fiber sizes can be produced by replacing the corresponding orifice die head, the filter ring is arranged at the inner side of the spinning die head, and the filter ring is taken down by disassembling the air pipe to replace the filter core, thereby achieving the purpose of conveniently cleaning and replacing the die head assembly and the filter screen; the set sub-runners are matched with the jetting runners to extrude melt trickle, the air runners are matched with the traction air cavities to pull the melt trickle to jet filamentous fibers, so that the resistance of each spinneret orifice to the melt trickle is the same, the jetting pressure of air flow at the spinneret orifices is consistent, and the size and the length of the formed filamentous fibers are stable and uniform.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic structural view of the present invention viewed from the bottom.

The labels in the figure are: 1-extruding a die; 110-a melt channel; 120-branch channel; 121-a homogenization section; 122-a lead-in section; 130-a metering pump; 2-a spinning die head; 210-die tip; 220-a spray-out flow channel; 221-connecting segment; 222-a horizontal segment; 230-the airway; 240-a traction air cavity; 250-a first flange; 3-spraying a hole die head; 310-spinneret holes; 320-round platform groove; 330-a second flange; 4-a filter ring; 401-a filter chamber; 5-a gas flow distributor; 501-trachea.

Detailed Description

The technology in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, the embodiment provides a melt-blowing die head assembly, which includes an extrusion die 1, the extrusion die 1 is connected to a spinning die head 2, the extrusion die 1 is vertically disposed, the spinning die head 2 is fixedly connected below the extrusion die 1, a melt channel 110 is disposed in the extrusion die 1, the melt channel 110 is communicated with a branch channel 120, the branch channel 120 includes a vertically disposed homogenizing section 121 and an annularly disposed guiding section 122, the spinning die head 2 is detachably connected to a nozzle die head 3, the spinning die head 2 and the nozzle die head 3 are both annular, the nozzle die head 3 is disposed outside the spinning die head 2, the spinning die head 2 is disposed with annularly disposed nozzle channels 220 communicated with the branch channel 120, air channels 230 are symmetrically disposed along the nozzle channels 220 in the spinning die head 2, an outwardly protruding die tip 210 is disposed on an outer side surface of the spinning die head 2, a circular truncated cone 320 having a size larger than that of the die tip 210 is disposed on an inner side surface of the nozzle die head 3, a drawing air cavity 240 with the gradually reduced section size is formed between the circular truncated cone groove 320 and the die tip 210, the drawing air cavity 240 enhances the ejection pressure of air flow and promotes the formation of filiform fibers with stable and uniform size and length, the output end of the air passage 230 is communicated with the drawing air cavity 240, and the outer side surface of the orifice die head 3 is provided with an orifice 310 communicated with the minimum caliber of the circular truncated cone groove 320.

In this embodiment, the inner side surface of the spinneret die head 2 is provided with the filter ring 4, the filter ring 4 is internally and annularly provided with the filter cavity 401 communicated with the air passage 230, the filter cavity 401 is internally provided with the filter element, the input end of the filter cavity 401 is communicated with the air pipe 501, the input end of the air pipe 501 is connected with the air distributor 5, the air distributor 5 introduces high-speed hot air into the air pipe 501, the filter element is used as a terminal for filtering, and high-temperature air flow guided into the air passage 230 through the air distributor 5 and the air pipe 501 is purified.

In this embodiment, the metering pump 130 is installed at the end of the channel of the input branch channel 120 of the melt channel 110, and the melt stream output from the melt channel 110 is distributed to the branch channel 120 by the metering pump 130 in a timed and quantitative manner.

In this embodiment, the ejection flow channel 220 includes a connection section 221 and a horizontal section 222 communicated with the introduction section 122, and the horizontal section 222 and the spinneret holes 310 are coaxially disposed to ensure a reasonable levelness, so that the resistance of the spinneret holes 310 to the melt trickle is the same, and uniform spinning is promoted.

In this embodiment, the upper and lower end surfaces of the spinneret die head 2 are provided with first flanges 250, the upper and lower end surfaces of the orifice die head 3 are provided with second flanges 330, the first flanges 250 and the second flanges 330 are connected by bolts, the orifice die head 3 is formed by fixedly connecting two identical half rings by bolts, the orifice die head 3 can be separated from the spinneret die head 2 by disassembling the bolts at the connecting positions of the two half rings of the orifice die head 3 and the edges of the first flanges 250 and the second flanges 330, and the meltblown fabrics with different fibers and fiber sizes can be produced by replacing the corresponding orifice die heads 2,

in this embodiment, in order to ensure a stable pressure condition between the extrusion die 1 and the spinneret die 2 and uniform dispersion of the melt stream, the sizes and the calibers of the flow passages of the homogenizing section 121, the introducing section 122 and the connecting section 221 are set to be the same.

In this embodiment, the number of the branch channels 120, the ejection channels 220, and the spinneret holes 310 is the same, and the extruded melt passes through the melt channel 110, the branch distribution of the metering pump 130, the branch channels 120, and the ejection channels 220 in sequence, and finally the uniform filamentous fibers are ejected from the spinneret holes 310.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The combined device of the melt-blown die head comprises an extrusion die (1), wherein the extrusion die (1) is connected with a spinning die head (2), and is characterized in that: the extrusion die (1) is vertically arranged, the spinning die head (2) is fixedly connected below the extrusion die (1), a melt runner (110) is arranged in the extrusion die (1), the melt runner (110) is communicated with a sub-runner (120), the sub-runner (120) comprises a vertically arranged homogenizing section (121) and a guide-in section (122) which is annularly distributed, the spinning die head (2) is detachably connected with a spraying hole die head (3), the spinning die head (2) and the spraying hole die head (3) are both annular, the spraying hole die head (3) is arranged at the outer side of the spinning die head (2), the spraying runner (220) which is annularly distributed and communicated with the sub-runner (120) is arranged in the spinning die head (2), air passages (230) are symmetrically arranged along the spraying runner (220) in the spinning die head (2), and an outward convex die tip (210) is arranged on the outer side surface of the spinning die head (2), the inner side surface of the spray hole die head (3) is provided with a circular truncated cone groove (320) with the size larger than that of the die tip (210), a traction air cavity (240) with the cross section size gradually reduced is formed between the circular truncated cone groove (320) and the die tip (210), the output end of the air passage (230) is communicated with the traction air cavity (240), and the outer side surface of the spray hole die head (3) is provided with a spray hole (310) communicated with the minimum caliber of the circular truncated cone groove (320).

2. A meltblowing die assembly in accordance with claim 1, wherein: the inner side surface of the spinning die head (2) is provided with a filtering ring (4), filtering cavities (401) communicated with the air passages (230) are annularly distributed in the filtering ring (4), and filter elements are arranged in the filtering cavities (401).

3. A meltblowing die assembly in accordance with claim 2, wherein: the input end of the filter cavity (401) is communicated with an air pipe (501), the input end of the air pipe (501) is connected with an air flow distributor (5), and the air flow distributor (5) introduces high-speed hot air into the air pipe (501).

4. A meltblowing die assembly in accordance with claim 1, wherein: and a metering pump (130) is arranged at the tail end of the channel of the melt channel (110) which is input into the sub-channel (120).

5. A meltblowing die assembly in accordance with claim 1, wherein: the ejection flow channel (220) comprises a connecting section (221) communicated with the leading-in section (122) and a horizontal section (222), and the horizontal section (222) and the spinneret orifice (310) are coaxially arranged.

6. A meltblowing die assembly according to claim 5, wherein: the homogenizing section (121) has the same size and caliber as the flow channel of the introducing section (122) and the connecting section (221).

7. A meltblowing die assembly in accordance with claim 1, wherein: the spinneret die head is characterized in that first flanges (250) are arranged on the upper end face and the lower end face of the spinneret die head (2), second flanges (330) are arranged on the upper end face and the lower end face of the spinneret die head (3), and the first flanges (250) are connected with the second flanges (330) through bolts.

8. A meltblowing die assembly in accordance with claim 1, wherein: the number of the branch flow passages (120), the ejection flow passages (220), and the spinneret holes (310) is the same.

9. A meltblowing die assembly in accordance with claim 1, wherein: the orifice die head (3) is formed by fixedly connecting two identical semi-rings through bolts.