CN117867764A

CN117867764A - Needling equipment

Info

Publication number: CN117867764A
Application number: CN202410164213.1A
Authority: CN
Inventors: 蔡吉祥; 罗杰龙; 郑锦森
Original assignee: Xiamen Yanjan New Material Co Ltd
Current assignee: Xiamen Yanjan New Material Co Ltd
Priority date: 2024-02-05
Filing date: 2024-02-05
Publication date: 2024-04-12

Abstract

The invention discloses needling equipment, which comprises a needle roller mechanism and a clamping mechanism; the needle roller mechanism comprises at least one needle roller, a plurality of needles are convexly arranged on the peripheral wall of the needle roller at intervals, and barbs are arranged on the needles; the clamping mechanism comprises two clamping nets which are arranged at intervals, and the two clamping nets are used for clamping the fiber net; the net clamping device comprises a plurality of net belts, wherein each net belt is sequentially arranged in parallel, gaps are formed between adjacent net belts, and needles of the needle roller penetrate through the gaps; the needle roller is arranged on one side of the clamping mechanism, and when the needle roller rotates, the needles move through the gap and penetrate into the fiber web in the clamping mechanism. The movement mode of the invention is changed from the traditional up-down needling of the fiber web to the roller shaft rotation needling, the process speed can be increased from 5m/min-30m/min to 50m/min-300m/min of the traditional needling, and the production efficiency is greatly improved.

Description

Needling equipment

Technical Field

The invention relates to the technical field of non-woven fabric production equipment, in particular to needling equipment.

Background

The needling equipment is mainly used for repeatedly puncturing the fiber web through a needling needle with a certain shape and size so as to realize the processing treatment of the fiber web. Specifically, when the needles pierce the fiber net, certain compressive force is generated, so that the fibers in the fiber net are displaced and closed to form fluffy and soft non-woven fabric. At the same time, the thorn hooks on the thorn needles can generate displacement movement of the fibers on the surface and the subsurface of the fiber web, so that the fibers are interwoven together to form a non-woven product with certain strength, density and elasticity.

The processing method can improve the performance of the fiber web, and improve the physical characteristics of strength, density, elasticity and the like, so that the fiber web has better service performance. Needling machines are widely used in the production of various nonwoven materials, such as geotextiles, filter materials, insulating materials, decorative materials, and the like.

As shown in fig. 1, the conventional needling apparatus a is composed of a needle plate a1, a stripping plate b and a supporting plate c. The fiber net 3 enters a needling area through a net pressing roller d and a net combing curtain e, and a needle a2 is inlaid on a needle plate a1 and moves up and down along with the rotation of a main shaft a3 and an eccentric wheel a4 to pierce the fiber net 3. The supporting net plate c plays a role of supporting the fiber net 3, when the needling finishes the puncture processing and makes return movement, the fiber net 3 is carried by friction force to move together, the fiber net 3 is blocked by the stripping net plate b, so that the needling is smoothly withdrawn from the fiber net 3, and the stripping net plate b plays a role of stripping the fiber net 3. Holes corresponding to the positions of the needles are arranged on the stripping net plate b and the supporting net plate c so that the needles a2 can pass through. During needling, the web movement is conveyed forward by the output roll f. Because in the needling area, the needles need to pierce into the fiber web through the holes on the stripping plate b and the supporting plate c, the needles need to do up-and-down motion, the forward transmission speed of the fiber web is greatly influenced by the frequency of the up-and-down motion of the needles, and although the needling frequency reaches 800 times/min and even 3000 times/min, in order to keep the integrity of the fiber web, the process linear speed of the traditional needling equipment is only 5m/min-30m/min, and the production efficiency is lower.

Disclosure of Invention

The invention aims to provide needling equipment which has the advantages of high process speed and high production efficiency.

In order to achieve the above object, the solution of the present invention is:

a needling apparatus comprising a needle roller mechanism and a clamping mechanism;

the needle roller mechanism comprises at least one needle roller, a plurality of needles are convexly arranged on the peripheral wall of the needle roller at intervals, and barbs are arranged on the needles;

the clamping mechanism comprises two clamping nets which are arranged at intervals, and the two clamping nets are used for clamping the fiber net; the net clamping device comprises a plurality of net belts, wherein each net belt is sequentially arranged in parallel, gaps are formed between adjacent net belts, and needles of the needle roller penetrate through the gaps; the two clamping nets respectively control the two clamping nets through corresponding transmission mechanisms and clamp the fiber net to be transmitted forwards;

the needle roller is arranged on one side of the clamping mechanism, and when the needle roller rotates, the needles move through the gap and penetrate into the fiber web in the clamping mechanism.

Further, the needle roller mechanism comprises at least two needle rollers, the needle rollers are arranged in parallel, and the needle rollers are arranged on the same side of the clamping mechanism or on two sides of the clamping mechanism respectively.

Further, the outer wall of the needle roller comprises a plurality of rows of needles which are circumferentially distributed and radially protruded, and the needles in each row of needles are mutually parallel and mutually spaced in the axial direction; the arrangement of the needles in the axial direction corresponds to the arrangement of the gaps of the mesh belts, and the needles are respectively positioned in the gaps of the mesh belts.

Further, the spacing between each two adjacent needles in the axial direction is the same or different; the width of each net belt is smaller than the interval of each needle at the corresponding position, so that each needle roller can move through each gap in a contraposition mode.

Further, the distance between the adjacent needles in the axial direction is 0.1mm-10mm.

Further, the lancet needle type is a triangular lancet, a tetragonal lancet, a fork lancet or a crown lancet.

Further, the needle roller comprises a plurality of sections of needle sleeves, the needle sleeves are coaxially spliced to form the needle roller, and a plurality of needles are embedded in the circumference of the needle sleeve.

Further, the needle roller comprises a plurality of sheets, and the sheets are coaxially spliced to form the needle roller; the sheet is provided with an annular area and a puncture needle area which are axially distributed, the annular area is an annular structure positioned on one side or two sides of the puncture needle area, the puncture area is also provided with an annular structure, and a plurality of puncture needles which are integrally formed with the sheet are circumferentially arranged on the periphery of the annular structure of the puncture area.

Further, the needle roller comprises a plurality of first sheets and a plurality of second sheets, each first sheet is in a circular shape, each second sheet is in a circular shape, and a plurality of needles which are integrally formed with the sheets are arranged on the periphery of the circular shape; the first sheet and the second sheet are spliced into the needle roller in an alternating distribution mode. After adopting the technical scheme, compared with the traditional needling mechanism, the invention adopts the needle roller mechanism to replace the traditional needle plate mechanism, the traditional upper and lower needling fiber net is changed into the roll shaft rotating needling in the movement mode, the needle roller pierces the fiber net, the hook thorns on the needle can bring the fiber net surface and some fibers in the fiber net to pass through the fiber net along with the needle so as to lead the fibers to move towards the thickness direction of the fiber net and intertwine each other in the movement process, when the needle rotates along with the needle roller to leave the fiber net, and the hook thorns on the needle are in the forward direction at the moment, the fibers are separated from the hook thorns and remain in the fiber net, the fiber displacement can not restore the original state, and the fibers are intertwined each other to form the needled non-woven fabric; in the application, the fiber web is driven by the needle roller to move forwards, and meanwhile, the clamping mechanism clamps the fiber web to move forwards, so that the process speed of needling the non-woven fabric is greatly accelerated, the limit of upper and lower needling and needle frequency on the process speed of needling is broken through, and the process speed can be increased to 50-300 m/min from 5-30 m/min of the traditional needling. Meanwhile, the stripping plate and the trawl board in the traditional needling are replaced by the net belt of the clamping mechanism, the defect that the traditional needling needles are limited by the stripping plate and the net holes of the net supporting plate to convey the fiber net forwards slowly is overcome, the needles in the needle roller mechanism can randomly puncture in the gaps between the net belts of the clamping mechanism, the needle roller mechanism and the clamping mechanism are not limited, the efficiency of the needling equipment is greatly improved, and the limitation of the technological speed of the traditional needling equipment is broken through.

Drawings

FIG. 1 is a schematic front view of a conventional needling apparatus

FIG. 2 is a schematic front view of example 1 of the present invention;

FIG. 3 is a schematic top view of embodiment 1 of the present invention;

fig. 4 is a schematic perspective view of a needle roller of example 1 of the present invention;

FIG. 5 is a schematic front view of embodiment 2 of the present invention;

FIG. 6 is a schematic front view of embodiment 3 of the present invention;

FIG. 7 is a schematic front view of example 4 of the present invention;

fig. 8 is a schematic perspective view of a needle roller of example 5 of the present invention;

FIG. 9 is a cross-sectional view of the lancet of embodiment 5 of the present invention;

FIG. 10 is a schematic view showing the structure of a lancet portion of embodiment 5 of the present invention;

FIG. 11 is a schematic top view of example 6 of the present invention;

FIG. 12 is a schematic view of a first sheet of example 6 of the present invention;

FIG. 13 is a schematic view of a second sheet of example 6 of the present invention;

FIG. 14 is a schematic top view of a needle roller of example 7 of the present invention;

FIG. 15 is a sheet schematic of example 7 of the present invention;

FIG. 16 is a schematic view of a lancet of example 7 of the present invention;

FIG. 17 is a schematic view showing the structure of a lancet portion of embodiment 7 of the present invention;

FIG. 18 is a schematic diagram of example 8 of the present invention;

fig. 19 is a top view of example 8 of the present invention.

Description of the reference numerals:

a traditional needling device a, a needle plate a1, a needle a2, a main shaft a3, an eccentric wheel a4, a screen stripping plate b, a screen supporting plate c, a screen pressing roller d and a screen carding curtain e;

needle roller mechanism 1, needle roller 11, needle 111, barb 1111, needle sheath 112, first sheet 113, second sheet 114, sheet 115, annular protrusion 116, pitch B;

clamping mechanism 2, clamping net 21, net belt 211, gap A;

a fibrous web 3.

Detailed Description

In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.

Example 1

As shown in fig. 2 to 4, the present invention discloses a needling apparatus for a web, which has the following structure: comprising a needle roller mechanism 1 and a clamping mechanism 2.

The needle roller mechanism 1 comprises a needle roller 11, a plurality of needles 111 are convexly arranged on the peripheral wall of the needle roller 11 at intervals, and barbs 1111 are arranged on the needles 111.

The clamping mechanism 2 comprises two clamping nets 21 which are arranged at intervals, and the two clamping nets 21 are used for clamping the fiber web 3; the clip net 21 includes a plurality of net belts 211, each net belt 211 is arranged in parallel in turn and a gap a is formed between adjacent net belts 211, and the gap a is provided for the needles 111 of the needle roller 11 to pass through.

The two clamping nets 21 of the clamping mechanism 2 respectively control the two clamping nets 21 to clamp the fiber web 3 to be transmitted forwards through corresponding transmission mechanisms.

The needle roller 11 is arranged on one side of the holding mechanism 2, and when the web 3 is conveyed to the holding mechanism 2, two clamping nets 21 of the holding mechanism 2 clamp the web 3 to be conveyed to the needling area, and when the needle roller 11 on one side of the holding mechanism 2 rotates, the needles 111 move through the gap a and pierce the web 3 in the holding mechanism 2. By puncturing the web 3 with the spike 111, the spike may only pierce the web 3 part, or may pierce the web 3, or even the spike pierces two clamping webs in the clamping mechanism 2, the barbs 1111 on the spike 111 will shift the movement of the fibers in the web 3, entanglement will be formed between the fibers, and due to friction force, the web 3 will be carried along, the clamping web 21 will block the web 3, so that the spike 111 will smoothly withdraw from the web 3, preventing the web 3 from adhering to the needle roller 11, and it is seen that the clamping mechanism 2 plays a role in clamping the web, peeling the web and transporting the web during the needling process.

In the needling process, the fiber web 3 is pierced by the needle roller mechanism 1, and is conveyed by the clamping mechanism 2, so that a needled non-woven fabric is formed, the limit of the process speed of needling and needle frequency up and down in a traditional needle plate is broken through, the process speed of the invention can be increased from 5m/min-30m/min to 50m/min-300m/min in the traditional needling, and the production efficiency is effectively improved.

Referring to fig. 3, the outer wall of the needle roller 11 may include a plurality of rows of needles 111 circumferentially distributed and radially protruding, and the needles 111 in each row of needles 111 are axially parallel to each other and spaced apart from each other; the arrangement of the needles 111 in the axial direction corresponds to the arrangement of the gaps a of the respective mesh belts 211, and the respective needles 111 are aligned with the respective mesh belt gaps a.

The spacing B between axially adjacent needles 111 in this embodiment is the same, and may be 0.1mm to 10mm, and the width of each mesh belt 211 may be smaller than the spacing B between the needles 111 in the corresponding position, so that each needle roller 11 moves in alignment through each gap a.

Thus, when the needle roller 11 rotates, each needle 111 can be inserted into the gap a between the mesh belts 211 to pierce the web 3 inside the holding mechanism 2.

Example 2

As shown in fig. 5, the structure of this embodiment is substantially the same as that of embodiment 1 described above, with the main difference that: the needle roller mechanism 1 comprises two needle rollers 11, and the two needle rollers 11 are arranged on the same side of the upper side of the clamping mechanism 2 in parallel so as to improve the puncture efficiency and the puncture effect.

From this, through set up two needle rollers 11 in fixture 2 upside to needle 111 can puncture web 3, carries out the puncture to web 3 through two needle rollers 11 or a plurality of needle rollers 11, can make the fibre that forms web 3 follow the needle motion, and intertwine each other more evenly, combine more inseparably, and the mechanical properties of the needled non-woven fabrics of formation is better.

Example 3

As shown in fig. 6, the structure of this embodiment is substantially the same as that of embodiment 2 described above, with the main difference that: the needle roller mechanism 1 comprises two needle rollers 11, and the two needle rollers 11 are arranged on the same side of the lower side of the clamping mechanism 2 in parallel so as to improve the puncture efficiency and the puncture effect.

Thus, by providing two needle rollers 11 on the underside of the clamping mechanism 2, and the needles 111 can pierce the web 3 to move and align the fibers in the web 3, entanglement.

Example 4

As shown in fig. 7, the structure of this embodiment is substantially the same as that of embodiment 2 described above, with the main difference that: the needle roller mechanism 1 comprises four needle rollers 11, two needle rollers 11 are arranged on the lower side of the clamping mechanism 2 in parallel, the other two needle rollers 11 are arranged on the lower side of the clamping mechanism 2 in parallel, and the upper needle rollers 11 and the lower needle rollers 11 can be arranged in a staggered manner, so that the puncture efficiency and the puncture effect are improved.

Thus, by providing two needle rollers 11 on the upper and lower sides of the holding mechanism 2, respectively, and the needles 111 can pierce the web 3 from the upper and lower sides of the web 3 to move and align the fibers in the web 3, entanglement is achieved.

Example 5

As shown in fig. 8 to 10, the structure of the present embodiment is substantially the same as that of embodiment 1 described above, with the main difference that: the needle roller 11 comprises a plurality of needle sleeves 112, the needle sleeves 112 are coaxially spliced to form the needle roller 11, a plurality of needles 111 are circumferentially distributed on the needle sleeves 112, and each circumferentially adjacent needle 111 has a distance B. Thereby facilitating adjustment, maintenance, replacement, etc. of the structure of the needle roller 11.

The lancet 111 in this embodiment is a triangular lancet 111 with barbs 1111 on the three corners of the triangle by inserting the needle into the sleeve 112.

Example 6

As shown in fig. 11 to 13, the structure of the present embodiment is substantially the same as that of embodiment 1 described above, with the main difference that: the needle roller 11 includes a plurality of first sheets 113 and a plurality of second sheets 114, each first sheet 113 is in a circular shape, each second sheet 114 is in a circular shape and a plurality of needles 111 are provided on the circumference of the circular shape; the first sheet 113 and the second sheet 114 are alternately spliced to the needle roller 11. The first sheet 113 is disposed to be spaced apart from the two second sheets 114, and the spacing of the lancet needles 111 of the two second sheets 114 can be constituted, whereby the spacing B of axially adjacent lancet needles 111 can be easily adjusted by adjusting the replacement of the first sheet 113.

Example 7

As shown in fig. 14 to 17, the structure of the present embodiment is substantially the same as that of embodiment 1 described above, with the main difference that: the needle roller 11 may include a plurality of sheets 115, each sheet 115 is coaxially spliced to form the needle roller 11, the sheet 115 has an axially distributed annular region 116 and a needle region 117, the annular region 116 has an annular structure located at one or both sides of the axial direction of the needle region 117, the needle region 117 also has an annular structure, and a plurality of needles 111 integrally formed with the sheet 115 are circumferentially arranged around the annular structure of the needle region 117.

In this embodiment, the lancet 111 is integrally formed with the sheet 115, is simple to manufacture, is not easily dropped, and as shown in fig. 16 and 17, the lancet 111 is a quadrangular lancet 111 having barbs 1111 at four corners of the quadrangle.

Example 8

As shown in fig. 18 and 19, the structure of this embodiment is substantially the same as that of embodiment 1 described above, with the main difference that: the distance B between each axially adjacent needles 111 on the needle roller 11 of the needle roller mechanism 1 of the present embodiment is different, and the gap A between the mesh belts 211 at the corresponding positions is also adjusted and changed accordingly.

For example, in this embodiment, the spacing B between adjacent needles 111 in the axial direction from left to right in the drawing may be 0.5mm for B1, 0.8mm for B2, 1mm for B3, 1.2mm for B4, 1.4mm for B5, 1.6mm for B6, 0.3mm for A1, 0.6mm for A2, 0.8mm for A3, 1mm for A4, 1.2mm for A5, and 1.3mm for A6 for each gap A of the upper clip 21 of the corresponding clip mechanism 2; while each gap A of the lower clip net 21 may be 0.3mm for A1', 0.6mm for A2', 0.7mm for A3', 0.9mm for A4', 1.1mm for A5', and 1.3mm for A6'.

In this embodiment, the length of the needles 111 may be used to penetrate the web 3 to enhance the penetration.

In this embodiment, the cross section of the mesh belt 211 may be circular, elliptical, or polygonal, and the polygonal includes triangle, rectangle, square, trapezoid, hexagon, etc.

In summary, by arranging the needle roller mechanism 1 and the clamping mechanism 2, the fiber web 3 is clamped by the two clamping webs 21 to be rapidly conveyed, and the needle roller mechanism 1 is matched for needling, so that the problem of limitation of the needling process speed is broken through.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above examples, and all technical solutions belonging to the scope of the present invention belong to the scope of the present invention.

For example, the lancet 111 needle type in the embodiment of the present invention may also be a fork lancet 111 or a crown lancet 111.

Claims

1. A needling apparatus characterized in that:

comprises a needle roller mechanism and a clamping mechanism;

2. A needling apparatus as defined in claim 1, wherein: the needle roller mechanism comprises at least two needle rollers, the needle rollers are arranged in parallel, and the needle rollers are arranged on the same side of the clamping mechanism or on two sides of the clamping mechanism respectively.

3. A needling apparatus as defined in claim 1, wherein: the outer wall of the needle roller comprises a plurality of rows of needles which are circumferentially distributed and radially protruded, and the needles in each row of needles are mutually parallel and mutually spaced in the axial direction; the arrangement of the needles in the axial direction corresponds to the arrangement of the gaps of the mesh belts, and the needles are respectively positioned in the gaps of the mesh belts.

4. A needling apparatus as defined in claim 3, wherein: the spacing between each two adjacent needles in the axial direction is the same or different; the width of each net belt is smaller than the interval of each needle at the corresponding position, so that each needle roller can move through each gap in a contraposition mode.

5. A needling apparatus as defined in claim 4, wherein: the distance between the adjacent needles in the axial direction is 0.1mm-10mm.

6. A needling apparatus as defined in claim 1, wherein: the needle type of the puncture needle is a triangle puncture needle, a quadrangle puncture needle, a fork puncture needle or a crown puncture needle.

7. A needling apparatus as defined in claim 1, wherein: the needle roller comprises a plurality of sections of needle sleeves, the needle sleeves are coaxially spliced to form the needle roller, and a plurality of needles are embedded in the circumference of the needle sleeve.

8. A needling apparatus as defined in claim 1, wherein: the needle roller comprises a plurality of sheets, and the sheets are coaxially spliced to form the needle roller; the sheet is provided with an annular area and a puncture needle area which are axially distributed, the annular area is an annular structure positioned on one side or two sides of the puncture needle area, the puncture area is also provided with an annular structure, and a plurality of puncture needles which are integrally formed with the sheet are circumferentially arranged on the periphery of the annular structure of the puncture area.

9. A needling apparatus as defined in claim 1, wherein: the needle roller comprises a plurality of first sheets and a plurality of second sheets, each first sheet is in a circular shape, each second sheet is in a circular shape, and a plurality of needles which are integrally formed with the sheets are arranged on the periphery of the circular shape; the first sheet and the second sheet are spliced into the needle roller in an alternating distribution mode.