CN212316291U

CN212316291U - Novel hot runner system for melt-blown mold

Info

Publication number: CN212316291U
Application number: CN202020814971.0U
Authority: CN
Inventors: 季海螺
Original assignee: Taizhou Huangyan Hongqi Plastic Mould Co ltd
Current assignee: Taizhou Huangyan Hongqi Plastic Mould Co ltd
Priority date: 2020-05-16
Filing date: 2020-05-16
Publication date: 2021-01-08
Anticipated expiration: 2030-05-16

Abstract

The utility model provides a novel melt and spout hot runner system for mould, its technical essential lies in, be equipped with the dashpot that leads to the groove intercommunication with the fuse-element between spinneret and the fixed plate, the last a plurality of nozzles that are equipped with of gating system, the lower extreme of nozzle stretches into in the dashpot, just the outer circumference radial distribution of lower extreme of nozzle has a plurality of jet orifices, the both sides that lie in the dashpot on spinneret and the fixed plate respectively are equipped with the heating pipe, gas inflow passageway is located the outside of heating pipe, lie in and be equipped with a plurality of separating groove between heating pipe and the gas inflow passageway in the spinneret, center on between spinneret and the fixed plate the dashpot is equipped with the sealing. The utility model has the advantages of spout the material quick even, the heating is stable even, and the leakproofness is good, and product quality is excellent, and work efficiency is high.

Description

Novel hot runner system for melt-blown mold

Technical Field

The utility model relates to the technical field of mold, in particular to novel melt and spout hot runner system for mould.

Background

The melt-blown method is a commonly used spinning method in the non-woven fabric manufacturing technology, generally, high-speed hot air with crossed directions is adopted to draw, solidify and form high polymers extruded from die holes, and the method is commonly used for producing non-woven fabrics such as polypropylene fibers, terylene and the like.

The melt-blown machine is a core component for manufacturing non-woven fabrics by a melt-blown method, wherein the melt-blown die head is also a core component for realizing high polymer wire drawing forming in the melt-blown machine, and the design of the melt-blown die head directly influences the length, uniformity, toughness, fineness and other aspects of wire drawing, thereby having decisive influence on the final cloth finished product.

The existing melt-blowing die head is only provided with a central nozzle, and the nozzle is only provided with a straight-through jet hole, so that the structure can cause that a melt is firstly jetted to the center of a melt through groove and then extends towards two ends, and the phenomena of low filling efficiency, uneven jetting and the like exist; in the existing melting die head, only two straight bar type heating pipes are arranged in a fixed plate or a spinneret plate, and the structure can cause uneven heating of a melt and seriously affect the product quality; in addition, poor sealing between the fixed plate and the spinneret plate can cause the melt to overflow, thereby affecting the service life of the die head.

Disclosure of Invention

To the deficiency in the prior art, an object of the utility model is to provide a novel melt and spout hot runner system for mould has and spouts the material quick even, and it is even to heat, and the leakproofness is good, and product quality is excellent, advantages such as work efficiency height.

The utility model discloses a following technical scheme realizes: a hot runner system for a novel melt-blown mold comprises an upper panel, a runner plate, a fixing plate, a spinneret plate and two wind-blocking plates which are arranged from top to bottom, wherein the hot runner system comprises a pouring system arranged between the upper panel and the runner plate and a melt through groove arranged in the spinneret plate along the length direction of the spinneret plate, a spinning gap is arranged between the two wind-blocking plates, spinning channels communicated with the spinning gap are respectively arranged between the two wind-blocking plates and the spinneret plate, the spinneret plate is provided with a plurality of spinning through holes communicated with the spinning channels and the melt through groove, a gas inflow channel communicated with the outside is arranged in the spinneret plate, a gas flow passage communicated with the spinning channels is arranged between the spinneret plate and each wind-blocking plate, and the spinneret plate is also provided with gas circulation through holes communicated with the gas inflow channel and the gas flow passage, the novel nozzle casting device is characterized in that a buffer groove communicated with a melt through groove is formed between the spinneret plate and the fixing plate, a plurality of nozzles are arranged on the casting system, the lower ends of the nozzles extend into the buffer groove, a plurality of jet holes are radially distributed on the outer circumference of the lower end of each nozzle, heating pipes are respectively arranged on the spinneret plate and the fixing plate and located on two sides of the buffer groove, a gas inflow channel is located on the outer side of each heating pipe, a plurality of separation grooves are formed between the heating pipes and the gas inflow channel in the spinneret plate, and a sealing piece is arranged between the spinneret plate and the fixing plate and surrounds the buffer groove.

In the hot runner system for the novel melt-blowing die, the heating pipes are rectangular, the lower edges of the heating pipes are positioned on two sides of the melt through groove and penetrate through the spinneret plate along the length direction of the spinneret plate, the upper edges of the heating pipes are positioned on two sides of the nozzle and embedded on the upper surface of the fixing plate along the length direction of the fixing plate, and two side edges of the heating pipes are embedded on two side walls of the spinneret plate and the fixing plate.

In the hot runner system for the novel melt-blowing die, the gas inflow channel is correspondingly arranged on the outer side of the lower edge of each heating pipe and penetrates through the spinneret plate along the length direction of the spinneret plate.

In the hot runner system for the novel melt-blowing die, the plurality of separation grooves are arranged at equal intervals along the length direction of the spinneret plate, and the separation grooves are formed by downwards sinking from the upper surface of the spinneret plate.

In the above hot runner system for the novel melt-blown mold, a receiving groove for receiving the sealing element is formed in the spinneret plate and the fixing plate, a gap exists between one side of the sealing element facing the buffer groove and the side corresponding to the receiving groove, and a sealing groove is recessed in the side direction of the sealing element.

In foretell novel melt and spout hot runner system for mould, the seal groove is including the first seal groove, second seal groove and the third seal groove of intercommunication, the third seal groove is close to buffer slot one side sets up, the cross-section of first seal groove and third seal groove is the rectangle setting, the cross-section of second seal groove is isosceles trapezoid and sets up, the cross-sectional area of third seal groove is greater than the cross-sectional area of first seal groove.

In foretell novel hot runner system for melt-blown mould, the gas flow leads to the chamber and leads to the chamber including first flow and leads to chamber, second flow and leads to the chamber, third crack and leads to the chamber, first flow leads to the chamber for certainly the upper surface undercut of deep bead forms and is close to gas circulation through-hole one side sets up, second flow leads to the chamber for certainly the relative inboard undercut in first flow leads to the chamber forms, third crack leads to the chamber intercommunication second flow lead to the chamber with it just is close to spout the passageway it sets up to lead to groove one side of the fuse-element.

In the hot runner system for the novel melt-blown mold, the pouring system is provided with four nozzles, and each nozzle is provided with four injection holes.

Compared with the prior art, the utility model profitable effect is: a plurality of nozzles are adopted, and a plurality of injection holes are radially distributed on the outer circumference of the lower end of each nozzle to realize quick and uniform filling of the sprayed materials; the rectangular heating pipe structure is adopted, so that uniform heating of the nozzle, the melt in the melt through groove and air is realized, the stability of the spinning quality is ensured, and the product quality is improved; be equipped with the sealing member between fixed plate and the spinneret, can promote sealing performance, prevent that the fuse-element is excessive, prolong the life of melt-blown die head to this design has simple structure, easily makes and practical efficient advantage.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is an enlarged view at B in fig. 3.

1. An upper panel; 2. a runner plate; 3. a fixing plate; 4. a spinneret plate; 5. a wind deflector; 6. a pouring system; 7. spinning gaps; 8. a melt through groove; 9. a spinning channel; 10. a spinneret through hole; 11. a gas inflow channel; 12. a gas flow passage is communicated with the cavity; 121. a first flow through cavity; 122. a second flow through cavity; 123. A third crack through cavity; 13. a gas flow through hole; 14. a buffer tank; 15. a nozzle; 16. an injection hole; 17. heating a tube; 18. a separation tank; 19. a seal member; 20. accommodating grooves; 21. a void; 22. a sealing groove; 221. a first seal groove; 222. a second seal groove; 223. a third seal groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, the present embodiment provides a novel hot runner system for a melt-blown die, the melt-blown die includes an upper panel 1, a runner plate 2, a fixing plate 3, a spinneret plate 4 and two wind blocking plates 5, the hot runner system includes a gating system 6 disposed between the upper panel 1 and the runner plate 2 and a melt through groove 8 disposed in the spinneret plate 4 along a length direction of the spinneret plate 4, a spinning gap 7 is disposed between the two wind blocking plates 5, spinning channels 9 communicated with the spinning gap 7 are disposed between the two wind blocking plates 5 and the spinneret plate 4, a plurality of spinning through holes 10 communicated between the spinning channels 9 and the melt through groove 8 are disposed on the spinneret plate 4, an inflow gas channel 11 communicated with the outside is disposed in the spinneret plate 4, and a gas runner through cavity 12 communicated with the spinning channels 9 is disposed between the spinneret plate 4 and each wind blocking plate 5, and the spinneret plate 4 is also provided with a gas flow through hole 13 for communicating the gas inflow channel 11 with the gas flow channel through cavity 12.

The melt enters the melt through groove 8 and is sprayed to the spinning channel 9 through the spinning through holes 10, the gas enters the gas inflow channel 11 and is sprayed to the spinning channel 9 through the gas flow through holes 13 and the gas flow through cavity 12, the melt is rapidly stretched and thinned by a gas flow field formed by the two gases and is sprayed out from the spinning gap 7, and finally, fibers or fiber webs are formed. In the embodiment, 8 separation grooves are arranged between the heating pipe and the gas inflow channel in the spinneret plate; the gating system is an existing system, and the embodiment will not be explained.

Specifically, a buffer groove 14 communicated with the melt through groove 8 is arranged between the spinneret plate 4 and the fixing plate 3, a plurality of nozzles 15 are arranged on the gating system 6, the lower ends of the nozzles 15 extend into the buffer groove 14, a plurality of jet holes 16 are radially distributed on the outer circumference of the lower ends of the nozzles 15, heating pipes 17 are respectively arranged on the spinneret plate 4 and the fixing plate 3 and located on two sides of the buffer groove 14, the gas inflow channel 11 is located on the outer side of the heating pipes 17, a plurality of separation grooves 18 are arranged between the heating pipes 17 and the gas inflow channel 11 in the spinneret plate 4, and a sealing member 19 is arranged between the spinneret plate 4 and the fixing plate 3 and surrounds the buffer groove. In detail, the gating system 6 is provided with four nozzles 15 in total, and each nozzle 15 is provided with four injection holes 16. The arrangement of the plurality of nozzles 15 and the plurality of jet holes 16 enables the melt to be jetted in the peripheral direction in the buffer tank 14 and then flow into the melt through groove 8, so that the melt can be rapidly and uniformly jetted from the melt through groove 8.

In this embodiment, the heating pipes 17 are rectangular, the lower edges of the heating pipes 17 are located on two sides of the through groove 8 and penetrate through the spinneret plate 4 along the length direction of the spinneret plate 4, the upper edges of the heating pipes 17 are located on two sides of the nozzle 15 and are embedded on the upper surface of the fixing plate 3 along the length direction of the fixing plate 3, and two side edges of the heating pipes 17 are embedded on two side walls of the spinneret plate 4 and the fixing plate 3. The heating pipe 17 is arranged as above, so that the melt in the nozzle 15 and the melt through groove 8 can be subjected to supplementary heating or heat preservation, the melt temperature is kept stable, and the high polymer quality is stable.

In this embodiment, the gas inflow passage 11 is correspondingly formed outside the lower side of each heating pipe 17 and is formed to penetrate the spinneret 4 along the longitudinal direction of the spinneret 4. The gas inflow channel 11 is arranged as above, so that sufficient air inlet volume can form high-speed air flow, and the fineness and the uniformity of drawn wires are ensured.

In the present embodiment, the plurality of separation grooves 18 are formed at equal intervals along the length direction of the spinneret plate 4, and the separation grooves 18 are formed by being recessed downward from the upper surface of the spinneret plate 4. The separation groove 18 is mainly provided to separate the heating pipe 17 from the gas inflow channel 11, so as to prevent the heat of the heating pipe 17 from being conducted to the outside to cause temperature reduction, and has a certain heat preservation effect.

In the present embodiment, a receiving groove 20 is formed in the spinneret plate 4 and the fixing plate 3 for receiving the sealing member 19, a gap 21 is formed between a side of the sealing member 19 facing the buffer groove 14 and a side corresponding to the receiving groove 20, and a sealing groove 22 is recessed in the side of the sealing member 19. The sealing groove 22 comprises a first sealing groove 221, a second sealing groove 222 and a third sealing groove 223 which are communicated with each other, the third sealing groove 223 is arranged close to one side of the buffer groove 14, the sections of the first sealing groove 221 and the third sealing groove 223 are arranged in a rectangular mode, the section of the second sealing groove 222 is arranged in an isosceles trapezoid mode, and the section area of the third sealing groove 223 is larger than that of the first sealing groove 221. The sealing member 19 is specifically configured as described above, the melt in the nozzle 15 is ejected into the buffer slot 14 from the ejection hole 16, and since there is a gap between the upper surface of the spinneret plate 4 and the lower surface of the fixing plate 3, the melt overflows from the gap, the overflowing melt enters the receiving groove 20 and flows into the sealing groove 22 of the sealing member 19, and the upper and lower sides of the sealing member 19 are expanded by the expansion force to the upper and lower sides and closely adhere to the fixing plate 3 and the spinneret plate 4, thereby achieving the sealing function.

In this embodiment, the gas flowing through cavity 12 includes a first flowing through cavity 121, a second flowing through cavity 122, and a third slit through cavity 123, the first flowing through cavity 121 is formed by downward sinking from the upper surface of the wind deflector 5 and is disposed near one side of the gas flowing through hole 13, the second flowing through cavity 122 is formed by downward sinking from the opposite inner side of the first flowing through cavity 121, and the third slit through cavity 123 communicates the second flowing through cavity 122 and the spinning channel 9 and is disposed near one side of the melt through groove 8. The gas flow through-chamber 12 is arranged as described above, and the gas flows from the first flow through-chamber 121 to the second flow through-chamber 122, and flows from the third slit through-chamber 123 to the spinning channel 9 after being heated by the heating tube 17, thereby forming a high-speed high-temperature gas flow.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. A novel hot runner system for a melt-blown mold comprises an upper panel (1), a runner plate (2), a fixing plate (3), a spinneret plate (4) and two wind blocking plates (5) which are arranged from top to bottom, wherein the hot runner system comprises a pouring system (6) arranged between the upper panel (1) and the runner plate (2) and a melt through groove (8) arranged in the spinneret plate (4) and formed along the length direction of the spinneret plate (4), a spinning gap (7) is arranged between the two wind blocking plates (5), spinning channels (9) communicated with the spinning gap (7) are respectively arranged between the two wind blocking plates (5) and the spinneret plate (4), a plurality of spinning through holes (10) communicated between the spinning channels (9) and the melt through groove (8) are arranged on the spinneret plate (4), and a gas inflow channel (11) communicated with the outside is arranged in the spinneret plate (4), a gas flow passage through cavity (12) communicated with a spinning channel (9) is arranged between the spinneret plate (4) and each wind shield (5), a gas circulation through hole (13) communicated with a gas inflow channel (11) and the gas flow passage through cavity (12) is also arranged on the spinneret plate (4), the spinneret plate is characterized in that a buffer groove (14) communicated with a melt through groove (8) is arranged between the spinneret plate (4) and the fixing plate (3), a plurality of nozzles (15) are arranged on the casting system (6), the lower ends of the nozzles (15) extend into the buffer groove (14), a plurality of jet holes (16) are radially distributed on the outer circumference of the lower ends of the nozzles (15), heating pipes (17) are respectively arranged on the spinneret plate (4) and the fixing plate (3) at two sides of the buffer groove (14), and the gas inflow heating pipe channel (11) is arranged at the outer side of the buffer groove (17), a plurality of separation grooves (18) are formed in the spinneret plate (4) and located between the heating pipe (17) and the gas inflow channel (11), and sealing elements (19) are arranged between the spinneret plate (4) and the fixing plate (3) and surround the buffer groove (14).

2. The hot runner system for the novel melt-blowing die according to claim 1, wherein the heating pipes (17) are rectangular, the lower edges of the heating pipes (17) are located on two sides of the melt through groove (8) and penetrate through the spinneret plate (4) along the length direction of the spinneret plate (4), the upper edges of the heating pipes (17) are located on two sides of the nozzle (15) and are embedded on the upper surface of the fixing plate (3) along the length direction of the fixing plate (3), and two side edges of each heating pipe (17) are embedded on two side walls of the spinneret plate (4) and the fixing plate (3) respectively.

3. The hot runner system for a novel melt blowing die as claimed in claim 2, wherein the gas inflow channel (11) is correspondingly provided outside the lower side of each heating pipe (17) and is provided through the spinneret plate (4) along the length direction of the spinneret plate (4).

4. The hot runner system for a novel melt blowing die as claimed in claim 3, wherein a plurality of the separation grooves (18) are provided at regular intervals along the length direction of the spinneret plate (4), and the separation grooves (18) are formed by being depressed downward from the upper surface of the spinneret plate (4).

5. The hot runner system for the novel melt-blowing die according to claim 1, wherein a receiving groove (20) is formed in the spinneret plate (4) and the fixing plate (3) for receiving the sealing element (19), a gap (21) is formed between one side of the sealing element (19) facing the buffer groove (14) and the corresponding side of the receiving groove (20), and the side of the sealing element (19) is recessed with a sealing groove (22).

6. The hot runner system for the novel melt blowing die according to claim 5, wherein the sealing groove (22) comprises a first sealing groove (221), a second sealing groove (222) and a third sealing groove (223) which are communicated with each other, the third sealing groove (223) is arranged near one side of the buffer groove (14), the cross sections of the first sealing groove (221) and the third sealing groove (223) are arranged in a rectangular shape, the cross section of the second sealing groove (222) is arranged in an isosceles trapezoid shape, and the cross sectional area of the third sealing groove (223) is larger than that of the first sealing groove (221).

7. The hot runner system for the novel melt blowing die according to claim 4, wherein the gas flowing through cavity comprises a first flowing through cavity (121), a second flowing through cavity (122) and a third crack through cavity (123), the first flowing through cavity (121) is formed by downwards sinking from the upper surface of the wind shield (5) and is arranged close to one side of the gas flowing through hole (13), the second flowing through cavity (122) is formed by downwards sinking from the opposite inner side of the first flowing through cavity (121), and the third crack through cavity (123) is communicated with the second flowing through cavity (122) and the spinning channel (9) and is arranged close to one side of the melt through groove (8).

8. The hot runner system for a novel melt blowing die according to claim 1, wherein the gating system (6) is provided with four nozzles (15), and each nozzle (15) is provided with four injection holes (16).