CN212582040U - Spinneret plate, spinneret die head and melt-blowing equipment - Google Patents

Abstract

The application discloses spinneret, spinneret die head and melt blown equipment. The spinneret plate comprises a plate body, a groove penetrating through the plate body, a plurality of capillary tubes arranged in the groove and a solder filled between the outer wall of each capillary tube and the inner wall of the groove, wherein the capillary tubes are fixed on the plate body through the solder. The spinneret plate is adopted by the spinneret die head and the melt-blowing equipment. The groove can be formed by one-step processing, the function of the spinneret plate is realized through a plurality of capillary tubes fixed in the groove, the processing difficulty of the spinneret plate is reduced, and the processing working hour can be shortened.

Description

Spinneret plate, spinneret die head and melt-blowing equipment

Technical Field

The utility model belongs to the technical field of the spinning and specifically relates to a melt-blown equipment is related to.

Background

The melt-blowing machine is one-step cloth-forming equipment which adopts a melt-blowing method to make resin slices or resin particles into a fiber web, and the prepared fiber web is generally used for the aspects of filter materials, oil absorption materials, sanitary materials and the like. The melt-blown die head is a key component of a melt-blown machine, and the uniformity of the melt-blown nonwoven fabric is closely related to the design and manufacture of the die head.

In the related technology, the spinneret plate is mainly designed to process spinneret holes with the aperture of 0.3-0.4 mm and the distance of 12-16 holes/cm on a plate. Thus, the fiber melt is extruded under high pressure and spun from the spinneret orifice. The spinneret holes are small in diameter and large in number, so that the processing difficulty is very high, the processing working hours are very long, and the improvement space exists.

SUMMERY OF THE UTILITY MODEL

In view of this, the application discloses a spinneret, aims at reducing the processing degree of difficulty of spinneret, shortens processing man-hour.

A spinneret for use in a meltblowing apparatus, comprising:

the plate body is provided with a groove in a penetrating manner;

a plurality of capillaries arranged in the groove; and

and the solder is filled between the outer wall of the capillary tube and the inner wall of the groove and fixes the capillary tube on the plate body.

Preferably, the groove includes:

a plurality of positioning grooves for positioning and installing the plurality of capillary tubes; and

and the communication grooves are alternately arranged with the positioning grooves and are in traversing communication with the positioning grooves according to a preset sequence.

Preferably, the plurality of positioning grooves are arranged in a line at predetermined intervals.

Preferably, the plurality of positioning grooves are distributed along a folding line.

Preferably, the positioning grooves are arranged along the circumference of a polygon.

Preferably, the positioning groove is a circular through hole with an inner diameter larger than the diameter of the capillary tube, and the communication groove is a long through hole with a width smaller than the diameter of the capillary tube; the communicating groove is communicated with the two adjacent positioning grooves along the length direction of the communicating groove;

the capillary tube and the corresponding positioning groove are arranged concentrically.

In other preferred embodiments, a plurality of sets of the grooves are formed in the plate body, and at least two capillaries are arranged in each set of the grooves.

Preferably, the groove includes:

at least two positioning grooves for positioning and installing the at least two groups of capillaries; and

and the communication grooves traverse and communicate the plurality of positioning grooves according to a preset sequence.

Preferably, the at least two positioning grooves are arranged in a line at a predetermined interval.

Preferably, the groove comprises at least 3 positioning grooves, and the at least 3 positioning grooves are distributed along a folding line.

Preferably, the groove comprises at least 3 positioning grooves, and the at least 3 positioning grooves are arranged along the circumferential direction of a polygon.

Preferably, the positioning groove is a circular through hole with an inner diameter larger than the diameter of the capillary tube, and the communication groove is a long through hole with a width smaller than the diameter of the capillary tube; the communicating groove is communicated with the two adjacent positioning grooves along the length direction of the communicating groove;

the capillary tube and the corresponding positioning groove are arranged concentrically.

The utility model also discloses a spout a die head, include:

the upper side of the support is provided with an airflow channel, and the middle part of the support is provided with a spinneret orifice;

the mounting piece is arranged on the upper side of the support and matched with the airflow channel;

a charging barrel arranged on the upper side of the mounting piece;

the middle parts of the charging barrel and the mounting part are communicated with the spinning nozzle, and the spinning die head further comprises the spinneret plate; the spinneret plate is fixed to the through part of the mounting piece, and the end part of the capillary is in butt joint with the spinneret orifice.

Furthermore, the utility model also discloses a melt-blown equipment, include: the feeding mechanism, the heating device, the air heater and the air pressure device further comprise the spinning die head;

the heating device is butted with the feeding mechanism and is used for heating the spinning raw materials in the feeding mechanism to a molten state; the feeding mechanism is communicated to the charging barrel through a discharging hole; the air pressure device is matched with the air heater and used for blowing hot air into the air flow channel.

Among the aforementioned spinneret, spout a die head and melt-blown equipment, through set up the slot on the plate body, adopt a plurality of capillaries to arrange in the slot and fixed through the solder, utilize the mode of capillary formation a plurality of spinneret orifices, this slot can utilize processing methods such as wire-electrode cutting once cut shaping, the capillary can adopt the prefab, so, can avoid directly offering the problem that the processing degree of difficulty that a plurality of aperture spout silk holes caused is big, the length of process time on the plate body.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic block diagram of the structure of a meltblowing apparatus in a preferred embodiment.

FIG. 2 is a schematic cross-sectional view of a spinning die in a preferred embodiment.

Fig. 3 is a partially enlarged view of a portion a of fig. 2.

Fig. 4 is a schematic diagram of the structure of the spinneret in the spinneret die shown in fig. 2.

Fig. 5 is a broken view of the cross-sectional view of fig. 4 taken along the direction V-V.

Fig. 6 is a schematic view of a first embodiment of a plate body of the spinneret shown in fig. 2, showing grooves.

Fig. 7 is a schematic view of a second embodiment of a plate body, showing a channel.

Fig. 8 is a schematic structural view of a plate body in another preferred embodiment in the second embodiment.

Fig. 9 is a schematic view of a plate body in a third embodiment, showing a groove.

Reference numerals:

10 feed mechanism

20 heating device

30 spinneret die head

31 support

32 mounting

33 Cartridge

34 spinneret plate

40 air heater

50 air pressure device

60 discharge mechanism

100 melt blowing apparatus

311 airflow channel

312 spinning nozzle

321 penetrating part

341 plate body

342 groove

343 capillary tube

344 solder

3421 locating slot

3422 communicating groove

31a first wind deflector

31b second wind deflector

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

As shown in fig. 1, the melt blowing apparatus 100 includes a feeding mechanism 10, a heating device 20, a spinning die head 30, an air heater 40, an air pressure device 50, and a discharging mechanism 60.

The feed mechanism 10 is used to feed the spinning raw material. The heating device 20 is connected to the feeding mechanism 10, and is configured to heat the spinning raw material in the feeding mechanism 10 to a molten state. The feeding mechanism 10 feeds the spinning raw material in a molten state to the spinning die head 30. Meanwhile, the air pressure device 50 is used in cooperation with the air heater 40 to supply high-speed hot air to the spinning die 30. The spun raw material is blown and drawn by the spinning die head under the action of high-speed hot air to form superfine fibers, then the superfine fibers are gathered by a discharging mechanism 60, such as a web forming roller or a web forming curtain and the like to form a web, and finally the web is reinforced by self-bonding to form the melt-blown fiber non-woven fabric.

Referring also to fig. 2-3, die head 30 includes a support 31, a mounting member 32, a barrel 33, and a spinneret 34.

For example, the support 31 is vertically placed, an air flow passage 311 is provided on the upper side of the support 31, and a spinneret 312 is provided in the middle of the support 31. In a specific implementation, the support 31 may be configured as two wind shields. For example, the support 31 includes a first wind deflector 31a and a second wind deflector 31b, and the airflow channel 311 is provided on each of the first wind deflector 31a and the second wind deflector 31 b. The spinneret 312 is formed between the first wind deflector 31a and the second wind deflector 31 b.

The mounting member 32 is provided on the upper side of the support 31 and engages with the airflow passage 311. The cartridge 33 is provided on the upper side of the mounting member 32.

The middle portions of the cartridge 33 and the mounting member 32 are communicated with the spinning nozzle 312.

The spinneret plate 34 is fixed to the through portion of the mounting tool 32.

For example, in a specific implementation, a groove with a flush end surface is formed on the upper side of the support 31, and after the lower end surface of the mounting member 32 is attached to the end surface on the upper side of the support 31, the upper side of the groove is closed, so that the airflow passage 311 is formed. In addition, the air pressure device 50 is used in cooperation with the air heater 40 to blow high-speed hot air into the air flow passage 311.

It is to be understood that the "upper side" and "lower side" are merely for convenience of description of the relative positional relationship of the holder 31, the mounting member 32, the barrel 33, and the spinneret 34 in the spinneret die 30, and do not absolutely limit the orientation of the respective components. When the orientation of the spinneret die head 30 is changed in a specific use situation, the orientations of the holder 31, the mounting member 32, the barrel 33, and the spinneret 34 can be adjusted as a whole, and only the aforementioned matching relationship is satisfied.

The barrel 33 is abutted to the feed mechanism 10, and after the heating device 20 heats the spinning raw material in the feed mechanism 10 to a molten state, the feed mechanism 10 feeds the spinning raw material in the molten state to the through portion of the mounting member 32. The air pressure device 50 and the air heater 40 are combined to blow high-speed hot air into the air flow passage 311, and the spinning raw material in the mounting member 32 enters the spinneret 34 through the penetrating portion thereof by the high-speed hot air. The spinning raw material is extruded and drawn by the spinneret 34 to form extremely fine fiber filaments, and the extremely fine fiber filaments are ejected from the spinneret 312.

Referring to fig. 4 to 8, the spinneret 34 includes a plate body 341, a groove 342, a plurality of capillaries 343, and a solder 344.

The groove 342 is not a solid body, but a through groove penetrating the plate body 341.

A plurality of capillaries 343 are arranged within the groove 342. The ends of the capillaries 343 interface with the orifices 312, and the capillaries 342 serve as orifices, and in particular embodiments, the plurality of capillaries 343 can be arranged at predetermined distances and locations depending on the spacing and position requirements of the filaments being ejected.

Solder 344 fills the space between the outer wall of the capillary 343 and the inner wall of the groove 342, and fixes the capillary 343 to the plate body 341.

By providing the groove 342 in the plate body 341 and arranging the plurality of capillaries 343 in the groove 342 and fixing them by the solder 344, the capillaries 343 having a small inner diameter can be directly used as orifices, and through-holes can be prevented from being processed one by one in the body 341. Meanwhile, the groove 342 can be formed by one-step cutting in a processing mode such as wire cutting, and the capillary tube 343 can be a prefabricated part, so that the problems of high processing difficulty and long processing time caused by directly forming a plurality of small-bore wire spraying holes on the plate body can be solved.

To achieve stable positioning, the positioning groove 3421 is a circular through hole with an inner diameter larger than the diameter of the capillary tube 343, and the capillary tube is concentrically arranged with the corresponding positioning groove. The communication groove 3422 is a long through hole having a width smaller than the diameter of the capillary 343, thereby realizing positioning and stopping of the capillary. The communicating groove 3422 communicates two adjacent positioning grooves 3421 along the length direction thereof.

The groove 342 of the plate 341 can be configured in various forms, which will be described in detail below with reference to specific embodiments and the accompanying drawings.

Example one

Referring to fig. 4 to 6, a groove 342 may be disposed on the plate body 341, and the groove 342 extends along the length direction of the plate body 341.

Specifically, the groove 342 includes a plurality of positioning grooves 3421 and a plurality of communicating grooves 3422. The positioning grooves 3421 are used for positioning and installing the capillary tubes 343, respectively. In a specific implementation, the capillary tubes 343 and the positioning grooves 3421 may be disposed in a one-to-one correspondence for convenient positioning.

The plurality of communicating grooves 3422 and the plurality of positioning grooves 3421 are alternately arranged, and the plurality of communicating grooves 3422 traverse and communicate with the plurality of positioning grooves 3421 in a predetermined order. Specifically, when there are N positioning grooves, the number of the communication grooves may be set to N-1, and two adjacent positioning grooves 3421 are communicated with each other through one communication groove 3422, where N is an integer greater than or equal to 3.

By providing the plurality of communicating grooves 3422, the plurality of positioning grooves 3421 can be communicated into a whole, so that when machining is performed, all the positioning grooves 3422 corresponding to one groove 342 can be machined by cutting at a time, and the processes of repeated positioning, tool setting, drilling and the like are avoided. Taking the linear cutting process as an example of the groove 342, the groove 342 is processed by only forming a through hole at the initial position on the plate 341, and then penetrating the through hole at the initial position of the wire electrode of the linear cutting machine, and then continuously cutting the plurality of positioning grooves 3421 through the communicating groove 3422.

When the corresponding capillaries 343 are correspondingly positioned in the positioning grooves 3422, the grooves 342 are filled with solder 344, and the capillaries 343 are fixed on the plate 341 by brazing, thereby forming the spinneret plate 34 with a spinning function.

In a preferred embodiment, the plurality of positioning grooves 3421 may be arranged in a straight line at predetermined intervals.

It can be understood that, in this embodiment, the plurality of positioning grooves 3421 and the plurality of communicating grooves 3422 may also be communicated with through grooves having the same width, that is, the positioning grooves 3421 and the communicating grooves 3422 do not need to be separately provided, so that the capillary 343 to be fixed may also be positioned in the groove 342 in the form of jig-assisted positioning, and then the filling and welding of the solder 344 may be completed, and the concept of the present application may also be implemented.

Example two

Fig. 7 shows another embodiment of the groove 342 on the plate 341. In the second embodiment, the plate body 341 may be provided with a groove 342, and the embodiment is substantially the same as the first embodiment except that the plurality of positioning grooves 3421 are distributed along a folding line in the second embodiment.

Correspondingly, when the groove 342 is machined, a linear cutting mode can be adopted for machining, only one through hole needs to be formed in the initial position of the plate body 341 for machining the groove 342, then the wire electrode of the linear cutting machine penetrates through the through hole in the initial position, the wire electrode can penetrate through the communicating groove 3422 to continuously cut the plurality of positioning grooves 3421, and the wire electrode is controlled to move along the folding line on the basis of the first embodiment.

In this embodiment, the positioning grooves 3421 are located at the inflection point of the folding line.

Referring to fig. 8, in a preferred embodiment, a plurality of positioning grooves 3421 may be formed between the inflection points of the folding line. The requirement of continuously cutting the groove 342 can be satisfied according to the situation.

In other embodiments, the positioning grooves 3421 may also be arranged along the circumference of a polygon, or arranged along a spiral line, and the like, and in the same way, only the requirement of continuously cutting the groove 342 needs to be satisfied, and no description is given.

EXAMPLE III

Referring to fig. 9, the third embodiment is substantially the same as the first and second embodiments, except that in the third embodiment, a plurality of sets of grooves 342 are formed on the plate body 341, and at least two capillaries are arranged in each set of grooves 342.

The implementation of each trench 342 can adopt any one of the first embodiment or the second embodiment, and is not described herein again.

Correspondingly, when only one groove is formed on the spinneret plate 34 corresponding to the plate body 341, the spinneret plate 34 may be manufactured as follows.

The plate body 341 is continuously cut to form a groove 342 penetrating through the plate body 341.

A plurality of capillaries 343 prepared in advance are arranged in the groove 342.

Solder is filled between the outer wall of the capillary 343 and the inner wall of the groove 342, and the capillary 343 is soldered to the plate body 341, that is, the outer wall of the capillary 343 is fixed to the inner wall of the groove 342 by solder. The capillaries 343 serve as orifices in the spinneret 34, and it will be readily appreciated that the bore diameters of the capillaries 343 are selected to be of a size compatible with the spinning fibers to be processed. The capillary 343 may be prepared in advance and used directly as a finished product.

In a specific implementation, the step of continuously cutting the plate body 341 to form the groove 342 penetrating through the plate body 341 may specifically include the following steps:

a through hole is formed in a preset initial cutting position of the plate body 341;

penetrating an electrode wire of the linear cutting machine through the through hole and setting a tool;

the wire cutting machine is started and the groove 342 is cut out continuously according to a predetermined trajectory.

In this way, the groove 342 can be continuously machined by one initial positioning.

Preferably, the length of the plurality of capillaries 343 prepared in advance is larger than the depth of the groove 342; the step of arranging a plurality of capillary tubes 343 prepared in advance in the groove 342 includes:

clamping one end of each capillary tube on a jig;

the other ends of the plurality of capillaries extend into the groove to be flush with the outer edge of the groove 342.

Thus, the length of the capillary tube 343 is greater than the depth of the groove 342, one end of the capillary tube is flush with the outer edge of the groove 342, and the other end of the capillary tube extends out of the groove 342, so that the capillary tube can be clamped on a jig.

Accordingly, after the step of brazing the capillary 343 to the plate body 341, the method may further include the steps of:

a portion of the plurality of capillaries 343 that extend beyond the grooves 342 is cut away. It will be appreciated that the excess may be cut off entirely or only part of the length may be cut off as required. The operation of polishing, deburring and the like can be assisted after the cutting.

In a specific implementation, the step of filling solder 344 between the outer wall of the capillary 343 and the inner wall of the groove 342, and brazing the capillary 343 to the plate body may specifically include the following steps:

putting solder 344 to the position of the groove 342;

heating the solder 344 and the corresponding position of the capillary 343 until the solder 344 melts;

the space between the outer wall of the capillary 343 and the inner wall of the groove 342 is filled with molten solder 344 to weld the capillary 343 and the plate body 341.

Accordingly, when the plurality of grooves 342 are formed on the plate body 341, the spinneret plate 34 may be manufactured as follows.

A plurality of groups of grooves 342 penetrating through the plate body 341 are formed by cutting on the plate body;

at least two capillaries 343 arranged within each set of grooves 342;

solder 344 is filled between the outer wall of the capillary 343 and the inner wall of the corresponding groove 342, and the capillary 343 is soldered to the plate body 341.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A spinneret plate for use in a meltblowing apparatus, comprising:

the plate body is provided with a groove in a penetrating manner;

a plurality of capillaries arranged in the groove; and

and the solder is filled between the outer wall of the capillary tube and the inner wall of the groove and fixes the capillary tube on the plate body.

2. The spinneret plate according to claim 1, wherein said grooves comprise:

a plurality of positioning grooves for positioning and installing the plurality of capillary tubes; and

and the communication grooves are alternately arranged with the positioning grooves and are in traversing communication with the positioning grooves according to a preset sequence.

3. The spinneret plate of claim 2, wherein: the positioning grooves are arranged on a straight line at preset intervals.

4. The spinneret plate according to claim 2 wherein said plurality of positioning slots are distributed along a fold line.

5. The spinneret plate according to claim 2 wherein said plurality of positioning slots are arranged along the circumference of a polygon.

6. A spinneret according to any one of claims 2 to 5, wherein: the positioning groove is a circular through hole with the inner diameter larger than the diameter of the capillary tube, and the communication groove is a long through hole with the width smaller than the diameter of the capillary tube; the communicating groove is communicated with the two adjacent positioning grooves along the length direction of the communicating groove;

the capillary tube and the corresponding positioning groove are arranged concentrically.

7. The spinneret plate according to claim 1, wherein a plurality of sets of said grooves are provided in said plate body, and wherein at least two capillaries are arranged in each set of said grooves.

8. The spinneret plate according to claim 7, wherein said grooves comprise:

at least two positioning grooves for positioning and installing the at least two groups of capillaries; and

and the communication grooves traverse and communicate the plurality of positioning grooves according to a preset sequence.

9. The spinneret plate of claim 8, wherein: the at least two positioning grooves are arranged on a straight line according to a preset distance.

10. The spinneret plate of claim 8, wherein: the slot includes 3 at least constant head tanks, just 3 at least constant head tanks distribute along a broken line.

11. The spinneret plate of claim 8, wherein: the groove comprises at least 3 positioning grooves, and the at least 3 positioning grooves are arranged along the circumferential direction of a polygon.

12. The spinneret plate according to any one of claims 8-11, wherein: the positioning groove is a circular through hole with the inner diameter larger than the diameter of the capillary tube, and the communication groove is a long through hole with the width smaller than the diameter of the capillary tube; the communicating groove is communicated with the two adjacent positioning grooves along the length direction of the communicating groove;

the capillary tube and the corresponding positioning groove are arranged concentrically.

13. A spinning die comprising:

the upper side of the support is provided with an airflow channel, and the middle part of the support is provided with a spinneret orifice;

the mounting piece is arranged on the upper side of the support and matched with the airflow channel;

a charging barrel arranged on the upper side of the mounting piece;

the barrel and the mounting member having a central portion communicating with the spinneret orifice, wherein the spinneret die head further comprises the spinneret plate according to any one of claims 1-12; the spinneret plate is fixed to the through part of the mounting piece, and the end part of the capillary is in butt joint with the spinneret orifice.

14. A meltblowing apparatus comprising: the spinning die comprises a feeding mechanism, a heating device, an air heater and an air pressure device, and is characterized by further comprising the spinning die head as claimed in claim 13;

the heating device is butted with the feeding mechanism and is used for heating the spinning raw materials in the feeding mechanism to a molten state; the feeding mechanism is communicated to the charging barrel through a discharging hole; the air pressure device is matched with the air heater and used for blowing hot air into the air flow channel.

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