CN216688431U

CN216688431U - Efficient melt-blowing die

Info

Publication number: CN216688431U
Application number: CN202122941622.2U
Authority: CN
Inventors: 邱基甸; 邱君醒; 陈战; 陈建人
Original assignee: ZHEJIANG KEDA PACKING MACHINE FACTORY
Current assignee: ZHEJIANG KEDA PACKING MACHINE FACTORY
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-06-07
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses an efficient melt-blowing die, which belongs to the field of melt-blowing equipment and solves the problems that in the prior art, a high polymer hot melt wire sprayed out through a melt cavity flow passage is blown by hot air from two sides to be extruded towards the middle, the thickness of the produced melt-blown cloth is uneven, and the quality of the melt-blown cloth is poor. The utility model is mainly used for blowing air at two sides of a flow passage of the melting cavity and has the function of middle blowing, so that the produced melt-blown cloth has higher quality.

Description

Efficient melt-blowing die

Technical Field

The utility model relates to a melt-blowing device, in particular to a high-efficiency melt-blowing die.

Background

The melt-blown mould generally comprises a melt cavity runner for flowing the high polymer hot melt and a blowing port for conveying hot air to the high polymer hot melt, the hot air pulls the high polymer hot melt in a molten state to be sprayed to base cloth in a filament form, the high polymer hot melt is mutually adhered together by utilizing the self waste heat of the high polymer hot melt to form melt-blown cloth, but the existing blowing port is generally arranged on two sides of the melt cavity runner, the high polymer hot melt sprayed through the melt cavity runner can be blown by hot air at two sides to extrude towards the middle, the high polymer hot melt can be mutually adhered before contacting the base cloth, so that the produced melt-blown cloth has uneven thickness, and the quality of the melt-blown cloth is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an efficient melt-blowing die, overcomes the defects of the prior art, and has the function of blowing air from the middle part while blowing air from two sides of a flow passage of a melt cavity, so that the produced melt-blown cloth has higher quality.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides an efficient melt-blown mould, includes the die body, and the die body is equipped with the sprue that high polymer hot melt flows, the end of sprue is equipped with the spinning jet, forms left spinneret orifice and right spinneret orifice between the left and right both sides of spinning jet and the die body respectively, and left spinneret orifice, right spinneret orifice all communicate with the sprue, and the left side of left spinneret orifice is equipped with left side mouth of blowing, and the right side of right spinneret orifice is equipped with right side mouth of blowing, and the outer bottom surface of spinning jet is equipped with middle mouth of blowing, and middle mouth of blowing is located between left spinneret orifice and the right spinneret orifice.

Furthermore, at least one end face of the spinning nozzle is provided with an air inlet, and an air supply channel communicated with the air inlet and the middle air blowing port is arranged in the spinning nozzle.

Furthermore, the middle air blowing openings are arranged in plurality and are arranged along the axial direction of the spinning nozzle.

Furthermore, the middle air blowing opening is provided with one air blowing opening and extends along the axial direction of the spinning nozzle.

Furthermore, the die body comprises a left die body and a right die body, the left die body and the right die body are spliced and fixed, and the spinneret is clamped and fixed by the left die body and the right die body.

Furthermore, the left side wall of the spinning nozzle is provided with a left spinning groove, a left spinning hole is formed by splicing the left die body and the left spinning groove, a right spinning groove is formed in the right side wall of the spinning nozzle, and a right spinning hole is formed by splicing the right die body and the right spinning groove.

Furthermore, the left die body and the right die body are spliced to form a containing cavity for containing the spinning nozzle, the containing cavity is positioned at the tail end of the main flow channel, a left sub-flow channel and a right sub-flow channel are formed between the cavity wall of the containing cavity and the outer wall of the spinning nozzle, the left spinning hole is communicated with the main flow channel through the left sub-flow channel, and the right spinning hole is communicated with the main flow channel through the right sub-flow channel.

Further, the chamber wall of holding the chamber extends from left to right and is the arc and the projection on the vertical section perpendicular to spinneret axial is the major arc.

Furthermore, buffering lugs are arranged in the left sub-channel and the right sub-channel and are distributed at intervals along the axial direction of the spinning nozzle.

Furthermore, the buffering lug comprises a top lug facing the outlet of the main flow channel, a buffering groove facing the outlet of the main flow channel is formed in the top lug, and two ends of the buffering groove are communicated.

After the technical scheme is adopted, the utility model has the following advantages: form left spinneret orifice and right spinneret orifice between left and right both sides and the die body through the spinneret respectively, can spout two rows of high polymer hot melt silks simultaneously, melt and spout efficiency and can double, and two rows of high polymer hot melt silks can form range upon range of effect moreover, and more even exquisiteness of spun hot melt dispersion is fine and smooth, and melt and spout the effect better, and the melt-blown cloth intensity that produces is better, the gas permeability is also better, has improved the quality of melt-blown cloth. The left side of left side spinneret orifice is equipped with left side mouth of blowing, and the right side of right side spinneret orifice is equipped with right side mouth of blowing, realizes both sides and bloies, under the high-speed air current effect of left side mouth of blowing and right side mouth of blowing, and left side spinneret orifice and right spinneret spun high polymer hot melt silk constantly rock along with the air current, make the fashioned high polymer hot melt silk more fine and smooth, distribute more evenly on attaching to the base cloth, ensure the quality of melt-blown cloth. In addition, the middle air blowing port is arranged on the outer bottom surface of the spinning nozzle and is positioned between the left spinning hole and the right spinning hole, so that the high polymer hot melt spun by the left spinning hole is blown to the base cloth by the left air blowing port and the middle air blowing port, and the high polymer hot melt spun by the right spinning hole is blown to the base cloth by the right air blowing port and the middle air blowing port, thereby effectively preventing the high polymer hot melt spun by the left spinning hole and the right spinning hole from being adhered before contacting the base cloth, ensuring the thickness of the produced melt-blown cloth to be uniform and ensuring the quality of the melt-blown cloth.

Drawings

The utility model will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of a high efficiency meltblown die of the present invention;

FIG. 2 is a cross-sectional view of a high efficiency meltblowing die of the utility model;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic drawing of a spinneret according to the present invention;

FIG. 5 is a schematic view of a spinneret according to the present invention (II);

FIG. 6 is a schematic view of a containment chamber of the present invention;

in the figure, 1, a die body; 100. a main flow channel; 101. an accommodating chamber; 11. a left mold body; 110. a left air blowing port; 111. a left branch runner; 12. a right mold body; 120. a right air blowing port; 121. a right branch runner; 20. a spinneret; 200. a left spinneret orifice; 201. a right spinneret orifice; 210. a middle air blowing port; 220. an air inlet; 230. an air supply channel; 240. a left spinneret groove; 241. a right spinning groove; 25. a buffer bump; 250. a top bump; 251. a buffer tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein.

It should be understood that, in various embodiments of the present invention, for example, the sequence numbers related to the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic thereof, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that in the present application, "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that, in the present invention, "a plurality" means two or more. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "comprises A, B and C" and "comprises A, B, C" means that A, B, C all comprise, "comprises A, B or C" means comprise one of A, B, C, "comprises A, B and/or C" means comprise any 1 or any 2 or 3 of A, B, C.

The technical solution of the present invention will be described in detail below with specific examples. The following specific embodiments may be optionally combined with or replaced by each other according to practical situations, and the same or similar concepts or processes may not be described in detail in some embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 6, the present invention provides a high efficiency melt-blowing mold, which includes a mold body 1, the mold body 1 is provided with a main flow passage 100 through which a high polymer hot melt flows, a spinneret 20 is provided at the end of the main flow passage 100, a left spinneret orifice 200 and a right spinneret orifice 201 are respectively formed between the left and right sides of the spinneret 20 and the mold body 1, the left spinneret orifice 200 and the right spinneret orifice 201 are both communicated with the main flow passage 100, the left side of the left spinneret orifice 200 is provided with a left air blowing port 110, the right side of the right spinneret orifice 201 is provided with a right air blowing port 120, the outer bottom surface of the spinneret 20 is provided with a middle air blowing port 210, the middle air blowing port 210 is located between the left spinneret orifice 200 and the right spinneret orifice 201, and the air blowing directions of the left air blowing port 110, the right air blowing port 120 and the middle air blowing port 210 can refer to three straight arrows in fig. 3.

According to the utility model, the left spinneret orifice 200 and the right spinneret orifice 201 are respectively formed between the left side and the right side of the spinneret 20 and the die body 1, so that two rows of high polymer hot fuses can be simultaneously sprayed, the melt-blowing efficiency can be doubled, the two rows of high polymer hot fuses can form a laminating effect, the sprayed hot melts are dispersed more uniformly and finely, the melt-blowing effect is better, the strength of the produced melt-blown fabric is better, the air permeability is better, and the quality of the melt-blown fabric is improved. The left side of left spinneret orifice 200 is equipped with left side mouth 110 of blowing, and the right side of right spinneret orifice 201 is equipped with right side mouth 120 of blowing, and under the high-speed air current effect of left side mouth of blowing and right side mouth of blowing, the high polymer hot melt silk of left side spinneret orifice 200 and right spinneret orifice 201 spun constantly rocks along with the air current, makes to adhere to the fashioned high polymer hot melt silk more fine and smooth on the base cloth, and it is more even to distribute. And the middle air blowing port 210 is arranged on the outer bottom surface of the spinneret 20, the middle air blowing port 210 is positioned between the left spinneret orifice 200 and the right spinneret orifice 201, so that the left air blowing port 110 and the middle air blowing port 210 blow the high polymer hot melt yarns sprayed from the left spinneret orifice 200 to the base cloth, and the right air blowing port 120 and the middle air blowing port 210 blow the high polymer hot melt yarns sprayed from the right spinneret orifice 201 to the base cloth, thereby effectively preventing the high polymer hot melt yarns sprayed from the left spinneret orifice 200 and the right spinneret orifice 201 from being adhered before contacting the base cloth, enabling the thickness of the produced melt-blown cloth to be uniform, and ensuring the quality of the melt-blown cloth.

In the present embodiment, the intermediate air blowing ports 210 are provided in plural and arranged in line in the axial direction of the spinneret 20. The high polymer thermal fuse ejected from the left and

right orifices

200 and 201 is effectively prevented from being stuck before contacting the base fabric by the plurality of intermediate air blowing ports 210.

It is to be understood that, in another embodiment, the intermediate blowing ports 210 are provided one and arranged to extend in the axial direction of the spinneret 20.

In order to continuously supply air to the intermediate air blowing port 210, in the present embodiment, an air inlet 220 is provided at one end surface of the spinneret 20, and an air supply passage 230 communicating the air inlet 220 and the intermediate air blowing port 210 is provided in the spinneret 20.

It is understood that in another embodiment, both end faces of the spinneret 20 are provided with air inlets 220.

In order to facilitate the installation and the disassembly of the spinning nozzle 20, the die body 1 comprises a left die body 11 and a right die body 12, the left die body 11 and the right die body 12 are fixedly spliced, and the spinning nozzle 20 is clamped and fixed by the left die body 11 and the right die body 12. The left die body 11 is fixed with the concatenation of right die body 12 and presss from both sides the spinning jet 20 tightly fixedly, does not need other fasteners to be connected with the spinning jet 20 to and when needs wash the maintenance to spinning jet 20, as long as loosen left die body 11 and right die body 12, can take out spinning jet 20 along the axial, the labour saving and time saving of getting up in the operation is very convenient.

The left side wall of the spinneret 20 is provided with a left spinneret groove 240, and a left spinneret hole 200 is formed by splicing the left die body 11 and the left spinneret groove 240. Form left spinneret orifice 200 through concatenation between left die body 11 and the left spinneret recess 240, be equivalent to divide into two parts with left spinneret orifice 200, partly is left spinneret recess 240 on the spinneret 20, and another part is left die body 11, and groove structure and left die body 11 are open structure, compare the pore structure and will process more easily, realize high accuracy processing moreover more easily, and the processing cost also can be lower.

In the same way, the right side wall of the spinneret 20 is provided with a right spinneret groove 241, and the right die body 12 and the right spinneret groove 241 are spliced to form a right spinneret hole 201. Specific effects can be seen in the left spinneret hole 200 described above.

In order to ensure that the spinneret 20 can be centered relative to the left die body 11 and the right die body 12, the left die body 11 and the right die body 12 are spliced to form a containing cavity 101 for containing the spinneret 20, the containing cavity 101 is located at the tail end of the main runner 100, a left branch runner 111 and a right branch runner 121 are formed between the cavity wall of the containing cavity 101 and the outer wall of the spinneret 20, the left spinneret holes 200 are communicated with the main runner 100 through the left branch runner 111, and the right spinneret holes 201 are communicated with the main runner 100 through the right branch runner 121. The left die body 11 and the right die body 12 are spliced to form the whole accommodating cavity 101, so that the processing is convenient, the finish processing of the accommodating cavity 101 is completed by one-time clamping, and the processing precision is ensured.

In order to reliably fix the spinneret 20 in the receiving chamber 101 and to eliminate the need for fastening members to connect the spinneret 20, the present embodiment is designed such that the wall of the receiving chamber 101 extends from left to right in an arc shape and a projection on a longitudinal section perpendicular to the axial direction of the spinneret 20 is a major arc. Such as the 240 deg. major arc shown in figure 6. The gravity influence of the spinneret 20 can be overcome by utilizing the major arc structure, the spinneret 20 is supported by the cavity wall of the containing cavity 101, so that the spinneret 20 can be fixed and reliable only by splicing the left die body 11 and the right die body 12, and the assembly is very convenient. In addition, the cavity wall of the accommodating cavity 101 is designed to be arc-shaped, and a left branch channel 111 and a right branch channel 121 which extend in arc-shaped form can be formed, so that the high polymer hot melt can flow into the left spinneret orifice 200 and the right spinneret orifice 201 more smoothly after flowing out of the main channel 100. It is understood that, instead of using an arc-shaped structure to support the spinneret 20, other structures, such as a V-shaped structure, an inverted trapezoid structure, etc., capable of overcoming the influence of gravity, may be used to fix the spinneret 20.

Example two:

as shown in fig. 4 and 5, in order to obtain a sufficient plasticizing effect for a sufficient time before the high polymer hot melt is sprayed, buffering protrusions 25 are provided in the left and right sub-runners 111 and 121, and the buffering protrusions 25 are spaced apart from each other in the axial direction of the spinneret 20. The high polymer hot melt in the left runner 111 and the right runner 121 is buffered by the buffering bump 25, the flowing speed of the high polymer hot melt is slowed down, the plasticizing time is prolonged, the plasticizing effect is better, and the quality of melt-blown cloth is ensured.

Specifically, the buffering bump 25 includes a top bump 250 facing the outlet of the main flow channel 100, and the top bump 250 increases the gap of the outlet of the main flow channel 100 after being reduced, so that when the high polymer hot melt passes through the top bump 250, the pressure applied to the high polymer hot melt is suddenly changed twice, and the adjacent local high polymer hot melt is kneaded, so that the high polymer hot melt sprayed from the spinneret orifice is more uniform. In order to prevent the top protrusion 250 from blocking the outlet of the main flow passage 100 and blocking the main flow passage 100, a buffer groove 251 facing the outlet of the main flow passage 100 is formed in the top protrusion 250, and both ends of the buffer groove 251 are penetrated. The buffer groove 251 can further buffer the high polymer hot melt, so that the high polymer hot melt flows more uniformly.

Other contents not described in this embodiment may refer to embodiment one.

In the utility model, the spinneret is matched with the lengths of the left die body and the right die body, and the axial direction of the spinneret is the length direction of the spinneret. The left and right directions mentioned in the present invention can be described with reference to fig. 2, which is for the convenience of description and clarity of the technical solution, and the directions in use are not limited. Other splicing modes related to the left mold body and the right mold body, the structure of the main flow channel, the structure for forming the left air blowing port and the right air blowing port and the like can refer to the prior art, and are not repeated herein. Other embodiments of the present invention than the preferred embodiments described above, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, should fall within the scope of the present invention defined in the claims.

Claims

1. The utility model provides an efficient melt-blown mould, includes the die body, and the die body is equipped with the sprue that high polymer hot melt flows, its characterized in that, the end of sprue is equipped with the spinning jet, forms left spinneret orifice and right spinneret orifice between the left and right both sides of spinning jet and the die body respectively, and left spinneret orifice, right spinneret orifice all communicate with the sprue, and the left side of left spinneret orifice is equipped with left air blowing mouth, and the right side of right spinneret orifice is equipped with right air blowing mouth, and the outer bottom surface of spinning jet is equipped with middle air blowing mouth, and middle air blowing mouth is located between left spinneret orifice and the right spinneret orifice.

2. The high efficiency melt blowing die of claim 1, wherein at least one end face of the spinneret is provided with an air inlet, and the spinneret is provided with an air supply passage communicating the air inlet and the intermediate air blowing port.

3. The high efficiency meltblown die according to claim 1, wherein said intermediate blowing openings are provided in plurality and arranged in an axial direction of the spinneret.

4. A high efficiency meltblown die according to claim 1, characterized in that said intermediate blowing openings are provided in one and along the axial extension of the spinneret.

5. The efficient melt blowing mold according to any one of claims 1 to 4, wherein the mold body comprises a left mold body and a right mold body, the left mold body and the right mold body are fixed in a splicing manner, and the spinneret is clamped and fixed by the left mold body and the right mold body.

6. The high efficiency meltblown die according to claim 5, wherein the left side wall of the spinneret has a left spinneret slot, the left die body and the left spinneret slot are connected to form a left spinneret hole, the right side wall of the spinneret has a right spinneret slot, and the right die body and the right spinneret slot are connected to form a right spinneret hole.

7. The efficient melt blowing die of claim 6, wherein the left die body and the right die body are spliced to form a containing cavity for containing the spinneret, the containing cavity is positioned at the tail end of the main runner, a left sub-runner and a right sub-runner are formed between the cavity wall of the containing cavity and the outer wall of the spinneret, the left spinneret holes are communicated with the main runner through the left sub-runner, and the right spinneret holes are communicated with the main runner through the right sub-runner.

8. The high efficiency meltblowing die of claim 7, wherein the cavity walls of the holding cavity extend from left to right in an arc shape and the projection on a longitudinal section perpendicular to the axial direction of the spinneret is a major arc.

9. The high efficiency meltblown die according to claim 7, wherein the left and right runners have cushion bumps therein, the cushion bumps being spaced axially along the spinneret.

10. A high efficiency melt blowing die as set forth in claim 9, wherein said cushion projection includes a top projection facing the outlet of the main flow passage, the top projection being provided with a cushion groove facing the outlet of the main flow passage, both ends of the cushion groove being perforated.