CN117166145A

CN117166145A - Guiding device of non-woven fabric manufacturing equipment and non-woven fabric manufacturing equipment

Info

Publication number: CN117166145A
Application number: CN202311355202.3A
Authority: CN
Inventors: 胡文燕; 曾庆长; 邱斌
Original assignee: Wuhan Zhongsen Medical Supplies Co ltd
Current assignee: Wuhan Zhongsen Medical Supplies Co ltd
Priority date: 2023-10-19
Filing date: 2023-10-19
Publication date: 2023-12-05

Abstract

The invention provides a guiding device of non-woven fabric manufacturing equipment and the non-woven fabric manufacturing equipment, which comprise a base, a needling column unit and a guiding component; the base is arranged on one side surface of the non-woven fabric and moves towards or away from the surface of the non-woven fabric; the needling units are distributed on the end face of the base, facing the non-woven fabric, along the extending direction of the non-woven fabric, and each needling unit synchronously moves towards or away from the surface of the non-woven fabric relative to the base, so that the distances between the sharp ends of the needling units and the surface of the non-woven fabric are the same; the guide component drives the needling units to synchronously move and lock the positions of the needling units; the needling units are mutually independent and synchronously move relative to the surface of the non-woven fabric, the connection line of the sharp ends of the needling units is adjusted to be parallel to the surface of the non-woven fabric according to the inclination angle of the non-woven fabric, the distances between the sharp ends of the needling units and the surface of the non-woven fabric are the same, the needling units can penetrate into the fiber web at the same time, and the inclination angle of the non-woven fabric and the horizontal plane is adapted.

Description

Guiding device of non-woven fabric manufacturing equipment and non-woven fabric manufacturing equipment

Technical Field

The invention relates to the technical field of non-woven fabrics, in particular to a guiding device of non-woven fabric manufacturing equipment and the non-woven fabric manufacturing equipment.

Background

Medical masks are increasingly demanded in the past, the global demand is still high, and the supply is seriously insufficient. The disposable mask is made of several materials: non-woven fabrics gauze mask, paper gauze mask, active carbon gauze mask, wherein non-woven fabrics gauze mask is one of the gauze mask types that demand is the biggest.

The needled non-woven fabric is one of the optional raw materials for manufacturing the non-woven fabric mask, and Chinese patent CN112056652A discloses a multifunctional protective mask which is manufactured by adopting the needled non-woven fabric. The principle of the needle-punched non-woven fabric process is to repeatedly puncture the web with barbed needles with triangular cross sections or other sharp-shaped cross sections. The barbs force the web surface and the local inner fibers into the web as they pass through the web. The original lofty web is compressed due to friction between the fibers. As the needles exit the web, the penetrated bundles of fibers break away from the barbs and remain in the web, so that many bundles of fibers entangle the web and can no longer return to the original loft state. After many needle-punching passes, a substantial amount of the fiber bundles are penetrated into the web, entangling the fibers in the web with each other, and thereby forming a needled nonwoven material having a strength and thickness.

The needling process of the non-woven fabric comprises a vertical needling method and an oblique needling method, wherein the vertical needling method refers to needling to penetrate into a fiber web along the vertical direction of the surface of the non-woven fabric; the oblique needling refers to needling to penetrate the web in a direction oblique to the surface of the nonwoven, and the oblique needling direction differs from the oblique needling direction of the surface of the nonwoven in terms of the thickness and quality of the final product.

Chinese patent CN114703606B discloses a needling apparatus for nonwoven production, which can find that the needling of the needling mechanism of the current needling machine is fixed, and if bevel needling is required, the needling machine needs to be customized according to the product. The reason for this is that, when the current needling machine adopts the bevel needling method, the surface of the nonwoven fabric is inclined to the horizontal plane along the extending direction thereof, and the needling still penetrates the fiber web along the plumb line direction; when the thickness and quality requirements of the product change, the inclination of the nonwoven fabric relative to the horizontal needs to be adjusted so that the inclination of the needled penetration into the web also needs to be changed, but this in turn results in the distances between the needled sharp ends of different rows and columns and the web being different from each other and the web cannot be penetrated simultaneously, and the needling machine needs to be re-customized to redirect the inclination of the needled penetration into the web.

Disclosure of Invention

In view of the above, the present invention provides a guide device for a nonwoven fabric manufacturing apparatus and a nonwoven fabric manufacturing apparatus, which are capable of solving the problem that the needling mechanism of the needling machine is fixed and the inclination angle of the needled web cannot be redirected according to the inclination angle of the nonwoven fabric with respect to the horizontal plane.

The technical scheme of the invention is realized as follows: the invention provides a guiding device of non-woven fabric manufacturing equipment, which comprises a base, a needling column unit and a guiding component; the base is arranged on one side surface of the non-woven fabric and moves towards or away from the surface of the non-woven fabric; the needling units are distributed on the end face of the base, facing the non-woven fabric, along the extending direction of the non-woven fabric, and each needling unit synchronously moves towards or away from the surface of the non-woven fabric relative to the base, so that the distances between the sharp ends of the needling units and the surface of the non-woven fabric are the same; the guide component drives the needling units to synchronously move and lock the positions of the needling units.

On the basis of the technical scheme, preferably, the guide assembly comprises a fixed part, a movable part, a limiting rod and a sliding pin; the end face of the base, which faces the non-woven fabric, is provided with a plurality of slots along the extending direction of the non-woven fabric, two ends of each slot extend along the moving direction of the needling units, and one end, far away from the non-woven fabric, of each needling unit is inserted in each slot in a one-to-one correspondence manner and moves along the slot; the fixed part and the movable part are arranged on the base and are positioned at two ends of the arrangement direction of the plurality of needling units; the movable part moves relative to the base along the moving direction of the needling column unit; at least one limiting rod is arranged on the side face of the needling unit in the arrangement direction, one end of the limiting rod is hinged with the fixing part, the other end of the limiting rod can rotate around the hinged part, and a sliding groove is formed in the limiting rod along the extending direction of the limiting rod; the sliding pins are arranged on the side surfaces of the needling units and the side surfaces of the movable parts in a one-to-one correspondence manner, and are inserted into the sliding grooves and move along the sliding grooves.

Still more preferably, the guide assembly further comprises a rotary drive mechanism and a screw; the rotary driving mechanism is arranged on the base and provided with a driving part; one end of the screw rod is connected with the driving part, and the other end of the screw rod extends along the moving direction of the needling column unit; the movable part is sleeved on the screw rod and is in threaded connection with the screw rod.

On the other hand, the invention also provides non-woven fabric manufacturing equipment, which comprises the guiding device of the non-woven fabric manufacturing equipment, a feeding end, a discharging end, a needling mechanism main body and a roller; the positions of the feeding end and the discharging end are fixed, and the part of the non-woven fabric between the feeding end and the discharging end is tensioned; the needling mechanism main body is provided with a base and drives the base to move along the plumb line direction, the sharp end of the needling unit faces to the non-woven fabric along the plumb line direction, and the needling unit synchronously moves along with the base and pierces or breaks away from the non-woven fabric; the roller is arranged between the feeding end and the discharging end and is clung to the surface of the non-woven fabric, the roller surface of the roller is clung to the surface of the non-woven fabric, and the roller moves along the plumb line to enable the surface of the non-woven fabric to be obliquely arranged relative to the horizontal plane and change the inclination angle.

On the basis of the technical scheme, preferably, the feeding end and the discharging end are arranged at the same end of the needling unit in the arrangement direction, and the discharging end is arranged right above the feeding end along the plumb line direction; the two rollers are arranged at the other end of the needling unit in the arrangement direction and far away from the feeding end or the discharging end, are simultaneously arranged on the surface of one side of the non-woven fabric facing the feeding end or the discharging end and tension the non-woven fabric, are arranged at intervals along the plumb line direction, move along the plumb line direction, and adjust the inclination angle of the non-woven fabric part between the roller and the feeding end or the non-woven fabric part between the roller and the discharging end and the horizontal plane; the needling mechanism body is provided with two bases along the plumb line direction, the two bases synchronously move, and needling units on the two bases respectively perform needling on the same surface or two surfaces of the non-woven fabric.

Still more preferably, the nonwoven fabric portion between the roll and the feed end and the nonwoven fabric portion between the roll and the discharge end are two working sections, respectively, and the inclination directions of the two working sections and the horizontal plane are opposite.

Still more preferably, when the two bases are positioned on the same facing end surfaces of the two working sections, the two bases synchronously move and the needling units on the two bases simultaneously perform needling on the two surfaces of the non-woven fabric; when the two bases are positioned on the end faces of the two working sections, which face opposite to each other, the two bases synchronously move and the needling units on the two bases are used for needling the same surface of the non-woven fabric respectively.

Still more preferably, the two rollers are moved in opposite directions simultaneously in the plumb line direction so that the inclination angles of the two work sections to the horizontal are the same.

Still more preferably, the inclination angle of the working section with respect to the horizontal plane is changed as the working section moves in the plumb line direction, and the inclination angle of the working section with respect to the horizontal plane is,

a＝ tan ^-1 ((B-A)/2L) (1)，

wherein a represents the inclination angle of the working section and the horizontal plane, A represents the distance between the two rollers along the plumb line direction, B represents the distance between the feeding end and the discharging end along the plumb line direction, and L represents the distance between the rollers and the feeding end or the discharging end along the horizontal direction.

Still more preferably, when the inclination angle of the working section with respect to the horizontal plane is changed, the movable portion is moved in the plumb line direction by a distance of,

d＝|h ¹ -h ² |＝ S×|tan(a ¹ )- tan(a ² ) | (2)，

h＝S×tan(a) (3)，

wherein d represents the moving distance of the movable part along the plumb line direction, h represents the height difference of the two ends of the arrangement direction of the plurality of needling units along the plumb line direction, and S represents the distance between the sharp ends of the two needling units along the horizontal direction.

The guiding device of the non-woven fabric manufacturing equipment and the non-woven fabric manufacturing equipment have the following beneficial effects compared with the prior art:

(1) The invention sets each needling unit to be mutually independent and synchronously move relative to the surface of the non-woven fabric, not only adjusts the connection line of the sharp ends of the needling units to be parallel to the surface of the non-woven fabric according to the inclination angle of the non-woven fabric, but also ensures that the spacing between the sharp ends of each needling unit and the surface of the non-woven fabric is the same so as to be capable of penetrating into the fiber web at the same time, realizes the redirection of each needling unit and can adapt to the inclination angle change of the non-woven fabric and the horizontal plane; through setting up the slide pin in the side of each acupuncture unit and movable part, and the slide pin slides and sets up in the spout of gag lever post, can drive each slide pin and remove in the spout when gag lever post free end rotates, again because each acupuncture unit and movable part can only follow the slot and remove, therefore the gag lever post rotates and can drive each acupuncture unit and movable part and remove to the equidistant equal proportion increase of distance that makes each acupuncture unit remove, realized the inclination adjustment of acupuncture unit sharp end line and horizontal plane, and realized the purpose that acupuncture unit sharp end is located same straight line all the time, make acupuncture unit sharp end line and non-woven fabrics surface parallel and with non-woven fabrics surface interval unanimity.

(2) According to the invention, the movable part is driven to move through the rotation of the screw, and the moving distance of the movable part is accurately controlled through the rotation turns of the screw, so that the lifting height of each needling unit is accurately regulated and controlled, and the inclination angle of the sharp end connecting line of each needling unit relative to the horizontal plane is accurately controlled.

(3) According to the invention, the non-woven fabric is tensioned through the feeding end and the discharging end with fixed positions, the inclination angle of the working section relative to the horizontal plane is convenient to adjust by the upward and downward movement of the roller, and when the non-woven fabric continuously advances, no matter how the inclination angle of the non-woven fabric changes, the needling column unit pierces the fiber web along the plumb line direction and meets the piercing angle requirement of the bevel needling process.

(4) According to the invention, the extending direction of the non-woven fabric is guided by the two rollers, so that the non-woven fabric is bent back, the two guiding devices are arranged up and down in the needling mechanism, and the two guiding devices can simultaneously needle different surfaces of the non-woven fabric through synchronous movement of the needling mechanism, or the two guiding devices can needle the same surface of the non-woven fabric twice through one up and down back and forth movement, so that the working efficiency is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a side view of a guide of the present invention;

fig. 2 is a side view of the nonwoven fabric manufacturing apparatus of the present invention;

FIG. 3 is a side view of another embodiment of the nonwoven fabric manufacturing apparatus of the present invention;

fig. 4 is a side view of still another embodiment of the nonwoven fabric manufacturing apparatus of the present invention.

In the figure: 1. a base; 101. a slot; 2. a needling column unit; 3. a guide assembly; 31. a fixing part; 32. a movable part; 33. a limit rod; 34. a slide pin; 35. a rotary driving mechanism; 36. a screw; 301. a chute; 4. a nonwoven fabric; 41. a working section; 5. a feed end; 6. a discharge end; 7. a needling mechanism body; 8. and (3) a roller.

Detailed Description

The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.

As shown in fig. 1, a guide device of a nonwoven fabric manufacturing apparatus of the present invention includes a base 1, a needling unit 2, and a guide assembly 3.

Wherein the base 1 is disposed on one of the surfaces of the non-woven fabric 4 and moves toward or away from the surface of the non-woven fabric 4. The base 1 is a main body to which the needling units 2 are mounted, and in the prior art, a plurality of needling units 2 are fixedly mounted on the base 1. In this case, however, the needling units 2 are movably mounted on the base 1 because the inclination angle between the needling surface formed by the needling units 2 and the horizontal plane needs to be adjusted.

The nonwoven fabric 4 in this case refers to the raw material web from which the nonwoven fabric 4 is made.

The needling unit 2 is a long column structure, each column is needled to form a column unit, and the column extending direction of the needling unit 2 is generally perpendicular to the extending direction of the nonwoven fabric 4. The plurality of needling units 2 are distributed on the end surface of the base 1 facing the non-woven fabric 4 along the extending direction of the non-woven fabric 4, the sharp ends of the plurality of needling units 2 form a needling surface, and when the plurality of needling units 2 synchronously move downwards, the whole needling surface can penetrate into the fiber web of the non-woven fabric 4 at the same time, so that the needling surface is parallel to the surface of the non-woven fabric 4; however, when the inclination angle between the surface of the non-woven fabric 4 and the horizontal plane is changed, the needling installation position in the traditional needling machine is fixed and cannot move up and down, so that the needling surface position in the traditional needling machine is always kept unchanged; in this embodiment, the needling units 2 always move synchronously towards or away from the surface of the nonwoven fabric 4 relative to the base 1, and the moving distance of each needling unit 2 increases or decreases in equal proportion, so that the distance between the sharp ends of the needling units 2 and the surface of the nonwoven fabric 4 is the same, and the angle of inclination of the formed needling surface with the horizontal plane can be changed accordingly, thereby realizing the redirection of each needling unit 2 to adapt to the angle of inclination of the nonwoven fabric 4.

The guide assembly 3 drives the plurality of needling units 2 to synchronously move and lock the positions of the needling units 2.

In a preferred embodiment shown in fig. 1, in order to realize the function of the guide assembly 3, specifically, the guide assembly 3 includes a fixed portion 31, a movable portion 32, a stopper rod 33, and a slide pin 34.

Wherein, a plurality of slots 101 are arranged on the end face of the base 1, which faces the non-woven fabric 4, along the extending direction of the non-woven fabric 4, two ends of each slot 101 extend along the moving direction of the needling units 2, one end, which is far away from the non-woven fabric 4, of each needling unit 2 is inserted into each slot 101 in a one-to-one correspondence manner and moves along the slot 101, and the needling units 2 are limited to move up and down only without moving left and right through the slots 101, so that the distance between the adjacent needling units 2 is kept unchanged.

The fixed part 31 and the movable part 32 are arranged on the base 1 and are positioned at two ends of the arrangement direction of the plurality of needling units 2; the movable portion 32 moves relative to the base 1 in the moving direction of the needling train unit 2, and a guide rail may be provided on the side of the base 1 to limit the moving path of the movable portion 32.

At least one limiting rod 33 is disposed on the side of the arrangement direction of the plurality of needling units 2, the side of the arrangement direction of the plurality of needling units 2 is actually the row end of the single needling unit 2, and the limiting rods 33 are disposed on both sides of the arrangement direction of the plurality of needling units 2 to achieve an accurate control effect. One end of the limiting rod 33 is hinged with the fixing part 31, the other end of the limiting rod 33 can rotate around the hinged part, and a sliding groove 301 is formed in the limiting rod 33 along the extending direction of the limiting rod 33.

The sliding pins 34 are arranged on the side surface of each needling unit 2 and the side surface of the movable part 32 in a one-to-one correspondence manner, and each sliding pin 34 is inserted into the sliding groove 301 and moves along the sliding groove 301.

Through the above technical solution, when the free end of the stop lever 33 rotates, the sliding pin 34 is clamped in the sliding groove 301, so that the sliding pin 34 can be rotated by the stop lever 33 to generate a pushing force on the inner wall of the sliding groove 301, and meanwhile, because the sliding pin 34 is fixed on each needling unit 2 or movable portion 32, each needling unit 2 or movable portion 32 can only move along the slot 101, the rotation of the stop lever 33 drives each needling unit 2 or movable portion 32 to move along the slot 101; the movement height of each needling unit 2 is limited by the limiting rod 33, the distance of the needling unit 2 moving up and down is larger as the needling unit 2 is nearer to the free end of the limiting rod 33, the distance of the needling unit 2 moving up and down is smaller as the needling unit 2 is farther from the free end of the limiting rod 33, and the movement distance of each needling unit 2 is equal-proportion increased or decreased under the limitation of the limiting rod 33. Meanwhile, although the horizontal distance of each needling unit 2 is limited by the sliding groove 301 and is not changed, the height of the sliding pin 34 on each needling unit 2 is increased or decreased, so that the sliding pin 34 moves along the sliding groove 301 in the process, and does not prevent each needling unit 2 from only moving up and down.

It should be noted that, the principle of the needling apparatus is that the needling surface of the nonwoven fabric 4 is treated by driving each needling unit 2, so that only the sharp end of needling is required to be inserted into the nonwoven fabric 4 without pressing the surface of the nonwoven fabric 4, and the nonwoven fabric 4 is soft, so that the reaction force to needling can be regarded as almost nonexistent, and therefore, even though the present embodiment presses each needling unit 2 into the nonwoven fabric 4 by the stopper rod 33 against the slide pin 34, the problem that the stopper rod 33 is damaged by a strong reaction force does not normally occur.

In a preferred embodiment shown in fig. 1, in order to accurately control the moving distance of the needling units 2, thereby precisely controlling the inclination angle of the needling surface formed by the sharp ends of each needling unit 2, the guide assembly 3 further includes a rotation driving mechanism 35 and a screw 36.

Wherein the rotation driving mechanism 35 is provided on the base 1 and has a driving portion; the rotation driving mechanism 35 may be a rotary motor.

One end of the screw 36 is connected with the driving part and the other end extends along the moving direction of the needling column unit 2; the movable portion 32 is sleeved on the screw 36 and is in threaded connection with the screw 36, and the moving distance of the movable portion 32 can be accurately controlled by converting the rotation number of the screw 36 into the moving distance of the movable portion 32.

As shown in fig. 2, the apparatus for manufacturing a non-woven fabric according to the present invention includes the guiding device of the apparatus for manufacturing a non-woven fabric according to any one of the embodiments, and further includes a feeding end 5, a discharging end 6, a needling mechanism body 7, and a roller 8.

The feeding end 5 and the discharging end 6 are respectively located before and after the needling process, the feeding end 5 sends the web as the raw material of the nonwoven fabric 4 into the needling process and passes through the needling unit 2 to be needled, the discharging end 6 receives the web subjected to needling treatment to be subjected to subsequent processes to obtain the final product, and the feeding end 5 and the discharging end 6 comprise a large number of conventional standard devices in the art, and the present case does not relate to improvement of the processes of the feeding end 5 and the discharging end 6, so the specific structures of the feeding end 5 and the discharging end 6 are not described in detail. In this embodiment, the positions of the feeding end 5 and the discharging end 6 are fixed, and the portion of the nonwoven fabric 4 between the feeding end 5 and the discharging end 6 is tensioned.

The needling mechanism main body 7 is the main body of the whole needling machine in practice, mainly comprises a supporting mechanism for installing the base 1 and a driving device for driving the supporting mechanism and the base 1 to move, and since the scheme does not relate to the improvement of the main operation principle and the mechanical structure of the needling machine, but only relates to the improvement of the guiding principle and the structure of the penetration angle of each needling unit 2, the specific structure of the needling mechanism main body 7 is not described in detail, but is simply described as that the base 1 is arranged on the needling mechanism main body 7 and drives the base 1 to move along the plumb line direction, the sharp end of the needling unit 2 faces the non-woven fabric 4 along the plumb line direction, and the needling unit 2 synchronously moves along with the base 1 and penetrates or breaks away from the non-woven fabric 4.

The roller 8 is arranged between the feeding end 5 and the discharging end 6 and is tightly attached to the surface of the non-woven fabric 4, and the roller 8 can tighten the non-woven fabric 4 so that the surface of the non-woven fabric 4 is kept flat and is convenient to carry out needling treatment, so that the roller surface of the roller 8 is tightly attached to the surface of the non-woven fabric 4; however, in this embodiment, the roller 8 also has an effect of adjusting the inclination angle between the surface of the non-woven fabric 4 and the horizontal plane, and the roller 8 moves along the plumb line to enable the surface of the non-woven fabric 4 to be inclined relative to the horizontal plane and change the inclination angle, and the principle is that the positions of the feeding end 5 and the discharging end 6 are fixed and invariable, which is equivalent to the fact that the height of one end of the non-woven fabric 4 is invariable, and the roller 8 moves up and down to enable the height of the other end of the non-woven fabric 4 to be relatively changed, so that the non-woven fabric 4 has the inclination angle.

By adopting the above technical solution, the process of bevel needling is redesigned, which is different from the prior art in that the nonwoven fabric 4 is generally conveyed in a horizontal direction in the prior art, and then each needling is set to be inclined toward the nonwoven fabric 4, and the needling mechanism is moved in an inclined manner to insert the needling into the web of the nonwoven fabric 4 along the bevel. However, the difficulty of the existing technology is that the non-woven fabric 4 is continuously and sectionally moved all the time, and the non-woven fabric 4 is needled every time one end of the non-woven fabric 4 is moved, and when the needling mechanism is obliquely moved to enable the needling to be inserted into the non-woven fabric 4 along an oblique angle in the existing oblique angle needling technology, the moving path of the needling mechanism is oblique lines and requires longer moving time, and the length of the part of the non-woven fabric 4 inserted by the needling mechanism is also longer, if the needling mechanism does not drive the needling to separate from the non-woven fabric 4, the non-woven fabric 4 starts to move again, so that the surface of the non-woven fabric 4 is scratched by the needling, and therefore, a longer pause is required to ensure that the needling is completely separated from the non-woven fabric 4 every time the needling is performed. However, in this embodiment, since the nonwoven fabric 4 is disposed obliquely, and each needling unit 2 always moves along the plumb line and pierces the nonwoven fabric 4, the movement path of each needling unit 2 is a vertical straight line, so that the movement time is shorter than the oblique line path of the conventional device, and because the nonwoven fabric 4 is disposed obliquely, the nonwoven fabric 4 can still be bevel needled when each needling unit 2 is inserted by moving vertically, so that the time required for single needling by the needling mechanism is greatly shortened.

In a preferred embodiment shown in fig. 3, in order to further improve the efficiency of the needling process, the following means are employed in this embodiment.

Wherein, feed end 5 and discharge end 6 set up the same end of the direction of laying at acupuncture row unit 2, and discharge end 6 sets up directly over feed end 5 along plumb line direction. Two rollers 8 set up at the other end of the direction of laying of acupuncture row unit 2 and keep away from feed end 5 or discharge end 6, and two rollers 8 set up simultaneously at the non-woven fabrics 4 towards one side surface of feed end 5 or discharge end 6 and taut non-woven fabrics 4, and two rollers 8 set up along plumb line direction interval. The non-woven fabric 4 is led by the two rollers 8 to extend from the feeding end 5 to one direction, then is bent and returns to extend towards the feeding end 5, and finally is output from the discharging end 6 right above the feeding end 5.

Each roller 8 moves along the plumb line direction and adjusts the inclination angle of the non-woven fabric 4 part between the roller 8 and the feeding end 5 or the non-woven fabric 4 part between the roller 8 and the discharging end 6 with the horizontal plane.

The needling mechanism main body 7 is provided with two bases 1 along the plumb line direction, the two bases 1 synchronously move, and the needling column units 2 on the two bases 1 respectively perform needling on the same surface or two surfaces of the non-woven fabric 4.

In this embodiment, the portion of the nonwoven fabric 4 between the roll 8 and the feed end 5 and the portion of the nonwoven fabric 4 between the roll 8 and the discharge end 6 are two working sections 41, respectively, and the two working sections 41 are inclined in opposite directions to the horizontal plane.

If the two bases 1 are located on the same facing end face of the two working sections 41, the two bases 1 are now actually facing two different surfaces of the nonwoven fabric 4, respectively, since the nonwoven fabric 4 is bent back to extend. Therefore, the two bases 1 synchronously move and the needling units 2 on the two bases 1 simultaneously perform needling on two surfaces of the non-woven fabric 4, and the two bases 1 can be simultaneously driven to move by one step through the needling mechanism main body 7, so that the simultaneous needling on two working sections 41 positioned on two different surfaces of the non-woven fabric 4 can be realized.

In a preferred embodiment shown in fig. 2, in comparison with the previous embodiment, if two bases 1 are located on opposite facing end faces of the two work sections 41, then the two bases 1 are actually facing the same surface of the nonwoven fabric 4 at the same time. Therefore, the two bases 1 are moved synchronously, and the needling units 2 on the two bases 1 are caused to needle the two work sections 41 on the same surface of the nonwoven fabric 4, respectively.

In a preferred embodiment shown in fig. 4, the present invention can actually perform needling operations at different angles in the two working sections 41, but in this embodiment, the two rollers 8 move in opposite directions along the plumb line direction at the same time, so that the inclination angle of the two working sections 41 with respect to the horizontal plane is the same.

Because the inclination angle of the working section 41 and the horizontal plane is changed after the roller 8 positioned on the working section 41 moves along the plumb line direction, the principle of the scheme is that the inclination angle of the non-woven fabric 4 is controlled by the up-and-down movement of the roller 8, in order to quickly know the inclination angle of the non-woven fabric 4, the inclination angle of the working section 41 and the horizontal plane can be converted by the Pythagorean theorem,

a＝ tan ^-1 ((B-A)/2L) (1)，

where a represents the inclination angle of the working section 41 to the horizontal, a represents the distance between the two rollers 8 in the plumb line direction, B represents the distance between the feed end 5 and the discharge end 6 in the plumb line direction and remains unchanged, and L represents the distance between the rollers 8 and the feed end 5 or the discharge end 6 in the horizontal direction and remains unchanged.

In a preferred embodiment shown in fig. 4, when the inclination angle of the working section 41 with respect to the horizontal plane is changed, since the principle of the present case is to control the up-and-down movement of each needling column unit 2 by the up-and-down movement of the movable portion 32, so that the inclination angle of the formed needling surface is changed, the movement distance of the movable portion 32 in the plumb line direction can be calculated by the pythagorean theorem,

d＝|h ¹ -h ² |＝ S×|tan(a ¹ )- tan(a ² ) | (2)，

h＝S×tan(a) (3)，

where d represents the moving distance of the movable portion 32 along the plumb line direction, h represents the height difference along the plumb line direction between the two ends of the arrangement direction of the plurality of needling units 2, and S represents the horizontal distance between the sharp ends of the two needling units 2 along the arrangement direction of the needling units 2, which is kept unchanged.

When the working section 41 is in the initial state, the inclination angle of the working section 41 with the horizontal plane is a ¹ At this time, the angle of inclination of the needling surface formed by each needling unit 2 is also a ¹ At this time, the height difference along the plumb line of the sharp ends of the two needling units 2 at the two ends of the needling units 2 in the arrangement direction is h ¹ The method comprises the steps of carrying out a first treatment on the surface of the When the inclination angle of the horizontal plane of the working section 41 is adjusted to a ² At this time, the angle of inclination of the needling surface formed by each needling unit 2 is also a ² At this time, the height difference along the plumb line of the sharp ends of the two needling units 2 at the two ends of the needling units 2 in the arrangement direction is h ² The method comprises the steps of carrying out a first treatment on the surface of the Since the change in the inclination angle of the working section 41 is small in practice, d represents the moving distance of the movable portion 32 in the plumb line direction, and can be approximately regarded as the distance that the sharp end of the needling unit 2 near the movable portion 32 moves when switching between the two states.

It should be noted that, since the up-down movement height of the movable portion 32 and the maximum movement distance of the needling unit 2 are actually different, and the mechanical structure itself has a large error range, the purpose of the formula in this case is to describe the principle of acquiring the corresponding parameters.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. A guiding device of a non-woven fabric manufacturing device, characterized in that: comprises a base (1), a needling unit (2) and a guide assembly (3);

the base (1) is arranged on one side surface of the non-woven fabric (4) and moves towards or away from the surface of the non-woven fabric (4);

the needling units (2) are distributed on the end face of the base (1) facing the non-woven fabric (4) along the extending direction of the non-woven fabric (4), and each needling unit (2) synchronously moves towards or away from the surface of the non-woven fabric (4) relative to the base (1) so that the distances between the sharp ends of the needling units (2) and the surface of the non-woven fabric (4) are the same;

the guide assembly (3) drives the needling units (2) to synchronously move and lock the positions of the needling units (2).

2. The guide device of a nonwoven fabric manufacturing apparatus according to claim 1, wherein: the guide assembly (3) comprises a fixed part (31), a movable part (32), a limit rod (33) and a sliding pin (34);

a plurality of slots (101) are formed in the end face, facing the non-woven fabric (4), of the base (1) along the extending direction of the non-woven fabric (4), two ends of each slot (101) extend along the moving direction of the needling units (2), and one end, far away from the non-woven fabric (4), of each needling unit (2) is inserted into each slot (101) in a one-to-one correspondence manner and moves along each slot (101);

the fixed part (31) and the movable part (32) are arranged on the base (1) and positioned at two ends of the needling units (2) in the arrangement direction;

the movable part (32) moves relative to the base (1) along the moving direction of the needling column unit (2);

at least one limiting rod (33) is arranged on the side face of the plurality of needling units (2) in the arrangement direction, one end of the limiting rod (33) is hinged with the fixing part (31) and the other end of the limiting rod can rotate around the hinged part, and a sliding groove (301) is formed in the limiting rod (33) along the extending direction of the limiting rod (33);

the sliding pins (34) are arranged on the side surface of each needling unit (2) and the side surface of the movable part (32) in a one-to-one correspondence manner, and each sliding pin (34) is inserted into the sliding groove (301) and moves along the sliding groove (301).

3. The guide device of a nonwoven fabric manufacturing apparatus according to claim 2, wherein: the guide assembly (3) further comprises a rotary driving mechanism (35) and a screw rod (36);

the rotary driving mechanism (35) is arranged on the base (1) and is provided with a driving part;

one end of the screw rod (36) is connected with the driving part, and the other end of the screw rod extends along the moving direction of the needling column unit (2);

the movable part (32) is sleeved on the screw rod (36) and is in threaded connection with the screw rod (36).

4. A nonwoven fabric manufacturing apparatus comprising the guide device of the nonwoven fabric manufacturing apparatus according to any one of claims 1 to 3, characterized in that: the needling machine also comprises a feeding end (5), a discharging end (6), a needling mechanism main body (7) and a roller (8);

the positions of the feeding end (5) and the discharging end (6) are fixed, and the part of the non-woven fabric (4) between the feeding end (5) and the discharging end (6) is tensioned;

the needling mechanism comprises a needling mechanism main body (7), wherein a base (1) is arranged on the needling mechanism main body (7) and drives the base (1) to move along the plumb line direction, the sharp end of a needling unit (2) faces to a non-woven fabric (4) along the plumb line direction, and the needling unit (2) synchronously moves along with the base (1) and pierces or breaks away from the non-woven fabric (4);

the roller (8) is arranged between the feeding end (5) and the discharging end (6) and is clung to the surface of the non-woven fabric (4), the roller surface of the roller (8) is clung to the surface of the non-woven fabric (4), and the roller (8) moves along a plumb line to enable the surface of the non-woven fabric (4) to be obliquely arranged relative to a horizontal plane and change the inclination angle.

5. The nonwoven fabric manufacturing apparatus according to claim 4, wherein:

the feeding end (5) and the discharging end (6) are arranged at the same end of the needling unit (2) in the arrangement direction, and the discharging end (6) is arranged right above the feeding end (5) along the plumb line direction;

the two rollers (8) are arranged at the other end of the needling unit (2) in the arrangement direction and far away from the feeding end (5) or the discharging end (6), the two rollers (8) are simultaneously arranged on one side surface of the non-woven fabric (4) facing the feeding end (5) or the discharging end (6) and tension the non-woven fabric (4), the two rollers (8) are arranged at intervals along the plumb line direction, each roller (8) moves along the plumb line direction, and the inclination angle between the non-woven fabric (4) part between the roller (8) and the feeding end (5) or the non-woven fabric (4) part between the roller (8) and the discharging end (6) and the horizontal plane is adjusted;

two bases (1) are arranged on the needling mechanism main body (7) along the plumb line direction, the two bases (1) synchronously move, and needling units (2) on the two bases (1) are used for needling the same surface or two surfaces of the non-woven fabric (4) respectively.

6. The nonwoven fabric manufacturing apparatus according to claim 5, wherein: the non-woven fabric (4) part between the roller (8) and the feeding end (5) and the non-woven fabric (4) part between the roller (8) and the discharging end (6) are respectively two operation sections (41), and the inclination directions of the two operation sections (41) and the horizontal plane are opposite.

7. The nonwoven fabric manufacturing apparatus according to claim 6, wherein: when the two bases (1) are positioned on the end faces of the two working sections (41) with the same orientation, the two bases (1) synchronously move and the needling units (2) on the two bases (1) simultaneously perform needling on the two surfaces of the non-woven fabric (4);

when the two bases (1) are positioned on the end faces of the two working sections (41) facing oppositely, the two bases (1) synchronously move, and the needling units (2) on the two bases (1) are used for needling the same surface of the non-woven fabric (4) respectively.

8. The nonwoven fabric manufacturing apparatus according to claim 6, wherein: the two rollers (8) move in opposite directions along the plumb line direction simultaneously, so that the inclination angles of the two working sections (41) and the horizontal plane are the same.

9. The nonwoven fabric manufacturing apparatus according to claim 8, wherein: after the roller (8) positioned on the working section (41) moves along the plumb line direction, the inclination angle of the working section (41) and the horizontal plane is changed, the inclination angle of the working section (41) and the horizontal plane is as follows,

a＝ tan ^-1 ((B-A)/2L) (1)，

wherein a represents the inclination angle of the working section (41) and the horizontal plane, A represents the distance between the two rollers (8) along the plumb line direction, B represents the distance between the feeding end (5) and the discharging end (6) along the plumb line direction, and L represents the distance between the rollers (8) and the feeding end (5) or the discharging end (6) along the horizontal direction.

10. The nonwoven fabric manufacturing apparatus according to claim 9, wherein: when the inclination angle between the working section (41) and the horizontal plane is changed, the moving distance of the movable part (32) along the plumb line direction is as follows,

d＝|h ¹ -h ² |＝ S×|tan(a ¹ )- tan(a ² ) | (2)，

h＝S×tan(a) (3)，

wherein d represents the moving distance of the movable part (32) along the plumb line direction, h represents the height difference of two ends of the needling column units (2) along the plumb line direction, and S represents the distance between the sharp ends of the two needling column units (2) along the horizontal direction.