CN115584596B

CN115584596B - Spunlace fiber lapping cross mechanism and spunlace non-woven fabric production line

Info

Publication number: CN115584596B
Application number: CN202211097621.7A
Authority: CN
Inventors: 孟庆成; 曹松亭; 杨如新; 杨晓顺; 闵志斌; 王兆祥
Original assignee: Anhui Golden Spring Non Woven Fabrics Co ltd
Current assignee: Anhui Golden Spring Non Woven Fabrics Co ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-04-11
Anticipated expiration: 2042-09-08
Also published as: CN115584596A

Abstract

The invention discloses a spunlace fiber lapping cross mechanism which comprises a support frame, a support and two pressing mechanisms arranged above the support frame, wherein the two pressing mechanisms are positioned between a laying component and a first pressing roller and between the laying component; the pressing mechanism comprises a pressing plate and a pulling assembly for pulling the pressing plate, the pulling assembly comprises a sliding rod which is arranged in a sliding mode, one end of the sliding rod is provided with a chute, and one end of the pressing plate is arranged in the chute in a sliding mode through a connecting column; in the rotating process of the first pressing roller, the driving assembly drives the sliding rod to move so as to drive the pressing plate to move downwards along the chute and gradually press the two ends of the spunlace fibers. The spunlace fiber lapping cross mechanism provided by the invention can press the laid multilayer spunlace fibers, so that the condition of folds caused by air resistance can be greatly reduced during pressing, the uniformity of the spunlace fiber lapping cross mechanism is improved, and the subsequent pressing of the first pressing roller is facilitated.

Description

Spunlace fiber lapping cross mechanism and spunlace non-woven fabric production line

Technical Field

The invention relates to the technical field of non-woven fabric production, in particular to a spunlace fiber lapping cross mechanism and a spunlace non-woven fabric production line.

Background

As is known, when producing spunlace-limited non-woven fabrics, it is necessary to lay down the formed spunlace fibers to a certain thickness by a cross lapping machine, and then press the formed spunlace fibers by a isomorphic pressing roller, so that the layered fluffy spunlace-limited cotton is compacted to facilitate subsequent spunlace processing;

the defects of the prior art are as follows: among the prior art, when it falls to its stack alternately through the cross lapping machine, need carry out the laying that stacks through the mechanism of laying that sets up, but because laying the mechanism and do not stop laying for reciprocating motion, and when the whereabouts, receive the resistance of air again, so can so when the cellucotton whereabouts stack falls, the condition of the partial position fold appears to the shaping effect after greatly influenced pressing.

Disclosure of Invention

The invention aims to provide a spunlace fiber lapping cross mechanism and a spunlace non-woven fabric production line, so as to solve the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

a spunlace fiber lapping and crossing mechanism comprises a support frame and a support, wherein the support frame is provided with a laying component which reciprocates, the support frame is provided with a first pressing roller, and the spunlace fiber lapping and crossing mechanism further comprises two pressing mechanisms arranged above the support frame, and the two pressing mechanisms are positioned between the laying component and the first pressing roller;

the pressing mechanism comprises a pressing plate and a pulling assembly for pulling the pressing plate, the pulling assembly comprises a sliding rod which is arranged in a sliding mode, one end of the sliding rod is provided with a chute, and one end of the pressing plate is arranged in the chute in a sliding mode through a connecting column;

in the rotating process of the first pressing roller, the driving assembly drives the sliding rod to move so as to drive the pressing plate to move downwards along the chute and gradually press the two ends of the spunlace fibers.

Preferably, the driving assembly comprises a rotating shifting lever fixedly arranged on the first pressing roller, a stop block is arranged at one end of the sliding rod, and the rotating shifting lever can be driven to move in the rotating process of the first pressing roller so as to shift the stop block to slide.

Preferably, the connecting column is arranged on the pressing plate in a transverse sliding mode along a direction perpendicular to the conveying direction of the spunlace fibers, the upper end of the chute inclines towards the direction of the rotating deflector rod, and the other end of the connecting column is connected into the chute in a sliding mode.

Preferably, hold-down mechanism is still including rotating the articulated mast that sets up on the support frame and being on a parallel with the translation board of support frame, just the other end of articulated mast rotates and sets up on the translation board, and parallel arrangement between two articulated masts.

Preferably, when the two sliding rods slide, the two pressing plates can be driven by the shaft rod assemblies to slide transversely outwards respectively, and when the two sliding rods slide, the translation plates are driven to translate obliquely forwards.

Preferably, the axostylus axostyle subassembly includes the sliding block that slides and set up along the long limit direction of pressure strip and the fixed slip post that sets up on the sliding block, just the slip post runs through to peg graft on the translation board, the helicla flute has been seted up on the outer wall of slip post, just fixedly connected with guide block in the translation board, just the guide block is pegged graft to in the helicla flute.

Preferably, in the process of the movement of the compression plate, the sliding column can be relatively rotated along the translation plate, so that the guide block can relatively slide in the guide groove, and the sliding column can be driven to move towards the direction of the translation plate while sliding, so as to drive the compression plate to transversely slide outwards.

Preferably, the sliding block further comprises a locking assembly arranged on the pressing plate, and after the pressing plate moves towards the direction of the translation plate, the locking assembly is driven to unlock, so that the sliding block can slide relative to the pressing plate.

Preferably, the locking assembly comprises a locking groove formed in the sliding block and a limiting block arranged on the compression plate in a sliding manner, an elastic piece is arranged between the limiting block and the compression plate, and the limiting block can be inserted into the locking groove under the elastic force of the elastic piece so as to limit the sliding of the sliding block;

the translation board is fixedly provided with an unlocking block matched with the limiting block, and the inclined plane arranged on the unlocking block is matched with the inclined plane arranged on the limiting block.

A spunlace nonwoven production line comprising any one of the spunlace fiber lapping cross-over mechanisms described above.

In the technical scheme, the spunlace fiber lapping cross mechanism and the spunlace non-woven fabric production line provided by the invention have the following beneficial effects:

according to the invention, through the arranged pressing mechanism, when the spunlace fibers are pressed, the pressing plate can be driven by the driving assembly to gradually move downwards, namely, the spunlace fibers below can be pressed, namely, the laid multi-layer spunlace fibers can be pressed in the pressing process, so that the wrinkling condition caused by air resistance can be greatly reduced, the uniformity of the spunlace fibers is improved, and the subsequent pressing of the first pressing roller is facilitated.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic structural diagram provided in an embodiment of the present invention;

FIG. 2 is a schematic top view of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pressing mechanism provided in an embodiment of the present invention;

FIG. 4 is a schematic view of a configuration of a pressing mechanism according to an embodiment of the present invention after pressing hydroentangled fibers;

FIG. 5 is a schematic structural diagram of a pressing plate, a sliding column and a sliding block according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a pressing plate and a translating plate according to an embodiment of the present invention;

fig. 7 is a schematic side view of a first pressing roller and a pressing mechanism according to an embodiment of the present invention;

fig. 8 is an exploded view of the pressing mechanism and the sliding rod according to the embodiment of the present invention;

fig. 9 is a schematic structural diagram of a pressing plate and a pressing plate according to an embodiment of the present invention;

FIG. 10 is an enlarged schematic view of a portion A according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a sliding column and a sliding block according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a limiting block according to an embodiment of the present invention;

fig. 13 is an enlarged schematic view of a point B provided in the embodiment of the present invention.

Description of reference numerals:

1. a support frame; 2. a second press roller; 3. a first press roller; 31. rotating the deflector rod; 4. a support; 5. a first transport rack; 51. a second transport rack; 6. a pressing mechanism; 61. a compression plate; 6101. a locking groove; 6121. a bevel; 62. a translation plate; 611. a sliding post; 6111. a helical groove; 6112. a slider; 612. a limiting block; 613. an elastic member; 621. a hinged column; 622. a guide block; 623. unlocking the block; 63. a slide bar; 631. a stopper; 614. a pressing plate; 615. connecting columns; 6141. limiting the supporting columns; 632. a chute; 6142. a stop block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Referring to fig. 1-13, a spunlace fiber lapping cross mechanism comprises a support frame 1 and a support 4, wherein the support 4 is provided with a reciprocating laying assembly, and the support frame 1 is provided with a first press roller 3: the two pressing mechanisms 6 are arranged above the supporting frame 1, and the two pressing mechanisms 6 are positioned between the laying component and the first pressing roller 3; the pressing mechanism 6 comprises a pressing plate 61 and a pulling assembly for pulling the pressing plate 61, the pulling assembly comprises a sliding rod 63 which is arranged in a sliding manner, a chute 632 is arranged at one end of the sliding rod 63, and one end of the pressing plate 61 is arranged in the chute 632 in a sliding manner through a connecting column 615; during the rotation of the first pressing roller 3, the driving assembly drives the sliding rod 63 to move, so as to drive the pressing plate 61 to move downwards along the chute 632 and gradually press the two ends of the spunlace fibers;

specifically, in this embodiment, the conveying direction of the laid spunlace fibers is as shown in the direction of arrow C in fig. 1, a first conveying net rack 5 and a second conveying net rack 51 are arranged on a support 4, the spunlace fibers are conveyed to the first conveying net rack 5 through the second conveying net rack 51, a laying component of the first conveying net rack 5 is arranged on the first conveying net rack 5, the spunlace fibers conveyed through the first conveying net rack 5 are reciprocally laid on the support frame 1 through the laying component, and then move towards the first pressing roll 3 and are compacted through the first pressing roll 3 and the second pressing roll 2, and the specific laying method and principle of the laying component are common knowledge and conventional technical means of those skilled in the art, and are not repeated.

According to the invention, through the arranged pressing mechanism 6, when the spunlace fibers are pressed, the pressing plate 61 can be driven by the driving assembly to gradually move downwards, namely, the spunlace fibers below can be pressed, namely, the laid multi-layer spunlace fibers can be pressed in the pressing process, so that the wrinkling condition caused by air resistance can be greatly reduced, the regularity of the fibers is improved, and the subsequent pressing of the first pressing roller 3 is facilitated.

Further, the driving assembly comprises a rotating deflector rod 31 fixedly arranged on the first pressing roller 3, and one end of the sliding rod 63 is provided with a stopper 631, so that in the rotating process of the first pressing roller 3, the rotating deflector rod 31 can be driven to move so as to move the stopper 631 to slide;

further, spliced pole 615 transversely slides along the direction that perpendicular to spunlace fibre was carried and sets up on pressure strip 61, the upper end of chute 632 is towards the direction slope that rotates driving lever 31, and the other end sliding connection of spliced pole 615 is in chute 632, it is specific, live the compression roller and rotate and set up on support frame 1, and drive through driving motor and rotate not shown in the figure, rotate through first compression roller 3 in this embodiment and drive pressure strip 61 and push down, can reduce its use of removing the driving source, improve device's functionality greatly, and the quantity of rotating driving lever 31 can be a plurality of, it is setting up on first compression roller 3 of circumference array, can realize carrying out periodic extrusion 631 to the dog, make slide bar 63 can carry out periodic slip 631.

Furthermore, the pressing mechanism 6 further includes a hinge post 621 rotatably disposed on the supporting frame 1 and a translation plate 62 parallel to the supporting frame 1, and the other end of the hinge post 621 is rotatably disposed on the translation plate 62 and is disposed in parallel between the two hinge posts 621.

Furthermore, while the two sliding rods 63 slide, the two pressing plates 61 can be driven by the respective shaft assemblies to slide laterally outward, and while sliding, the translation plate 62 is driven to translate obliquely forward. In this embodiment, through the articulated post 621 that sets up, the cooperation of structures such as translation board 62 and sliding block 6112 and slip post 611, can make when the pressure strip 61 moves down, it also can outwards slide, make two pressure strips 61 respectively to keeping away from the fibrous direction motion of water thorn, not only can press the water thorn is spacing promptly, and in addition when pressing, can drag the fibrous both ends of water thorn, so that the water thorn fibre that comes under the tiling is neat orderly more, the fibrous fold degree of whole water thorn that significantly reduces.

Further, the axostylus axostyle subassembly includes the sliding block 6112 and the fixed sliding column 611 that sets up on sliding block 6112 that slide setting along the long limit direction of pressure strip 61, and sliding column 611 runs through and pegs graft on translation board 62, has seted up helicla flute 6111 on the outer wall of sliding column 611, and fixedly connected with guide block 622 in translation board 62, and guide block 622 pegs graft to in the helicla flute 6111.

In a further embodiment of the present invention, during the movement of the pressing plate 61, the sliding column 611 can be relatively rotated along the translating plate 62, so that the guide block 622 can relatively slide in the guide slot, and at the same time, the sliding column 611 can be driven to move toward the translating plate 62, so as to drive the pressing plate 61 to slide laterally and outwardly. The pressing plate 61 mentioned in this embodiment slides laterally and outwardly, which means that the pressing plate 61 can slide outwardly relative to the support frame 1, so that the pressing plate 61 can also move in a direction away from the support frame 1 in a process of moving in the direction of the support frame 1, and the spunlace fibers can be tiled and pulled, thereby greatly reducing the wrinkle.

In a further embodiment of the present invention, the present invention further includes a locking assembly disposed on the pressing plate 61, and after the pressing plate 61 moves toward the translation plate 62, the locking assembly is driven to unlock, so that the sliding block 6112 can slide relative to the pressing plate 61.

In a further embodiment of the present invention, the locking assembly includes a locking groove 6101 formed on the sliding block 6112 and a limiting block 612 slidably disposed on the pressing plate 61, and an elastic member 613 is disposed between the limiting block 612 and the pressing plate 61, and under the elastic force of the elastic member 613, the limiting block 612 can be inserted into the locking groove 6101 to limit the sliding of the sliding block 6112; an unlocking block 623 which is matched with the limiting block 612 in the direction is fixedly arranged on the translation plate 62, and an inclined surface 6121 arranged on the unlocking block 623 is matched with an inclined surface 6121 arranged on the limiting block 612. After the pressing plate 61 moves towards the direction of the translation plate 62, the locking releasing block 623 is driven to be gradually inserted into the limiting block 612, so that the two inclined surfaces 6121 are abutted, the locking releasing block 623 can be driven to move towards the elastic element 613 to be separated from the locking groove 6101, and the pressing plate 61 and the sliding block 6112 can slide relatively.

Further, one end of the sliding rod 63 is provided with a spring, and the sliding rod 63 can have a tendency to move towards the hinge post 621 under the elastic force of the spring; and the articulated column 621 is provided with the torque spring on the articulated axle with the support frame 1 mutually, its elasticity can make articulated column 621 and support frame 1 be in the vertical state, concretely, in this embodiment, the spring that sets up on the slide bar 63 can make the slide bar 63 after rotating driving lever 31 and stirring the one end distance that dog 631 slided, the spring takes place to warp, after rotating driving lever 31 and breaking away from dog 631, under the elasticity of spring, slide bar 63 slides to the initial position in twinkling of an eye, and the torque spring that sets up on the articulated shaft of articulated column 621 and support frame 1 mutually also can impel articulated column 621 to move to the state of being perpendicular to support frame 1.

Specifically, one end of each of the two compression plates 61 close to the main compression roller is fixedly provided with a pressing plate 614 and is arranged at the lower end of the compression plate 61, the pressing thickness is between 0.6mm and 1mm, and by the arrangement of the pressing plates 614, when the compression plates 61 move towards the first compression roller 3, the pressing plates 614 arranged on the compression plates 61 at the two ends can respectively pull and press the spunlace fibers and then gradually move towards the first compression roller 3, that is, the pressing plates 614 can further press the spunlace fibers, and as the pressing plates 614 are thinner and are inserted between the support frames 1 of the first compression roller 3, the pressed spunlace fibers can be pressed when being conveyed to the lower part of the first compression roller 3, that is, the edge warping condition of the edge of the spunlace fibers can be greatly reduced, the flatness of the spunlace fibers is integrally improved, and the production quality is improved;

specifically, it is provided with spacing support column 6141 to rotate on the pressure board 614, and be provided with torque spring in the axis of rotation, its elasticity can make the one end of spacing support column 6141 support on separating the shelves piece 6142, inject gradually on first pressure roller 3 according to pressure board 614, first pressure roller 3 presses spacing support column 6141, make its spout internal motion of seting up along the below, namely, do not influence first use according to pressure roller 3, and the spacing support column 6141 that sets up in this application can real-timely support pressure board 614, make pressure board 614 under long-time use, can not take place the ascending deformation of transverse direction, the very big levelness of pressure board 614 is pressed in the improvement, be favorable to pressing it.

When the spunlace fiber pressing device is used, firstly, a plurality of layers of spunlace fibers are laid through the laying assembly, then the laid spunlace fibers are conveyed to the lower part of the first pressing roller 3 to be pressed, so that the spunlace fibers are compacted, specifically, when the spunlace fibers are conveyed, the first pressing roller 3 is driven to rotate through the arranged driving motor, the first pressing roller 3 drives the connected rotating deflector rod 31 to rotate while rotating, in the rotating process, the rotating deflector rod 31 abuts against the stop block 631, the stop block 631 is driven to move towards the direction of the first pressing roller 3, namely, the connected sliding rod 63 is driven to slide, so that the chute 632 is driven to synchronously move, and in the moving process:

one end of the connecting column 615 slides along the inclined groove 632 and drives the pressing plate 61 to slide, and in the sliding process, because the connecting column 615 slides along the inclined groove 632, the pressing plate 61 can be driven to gradually move downwards in the moving process.

In the process of sliding of the pressing plate 61, the sliding columns 611 connected to each other can be driven to move synchronously, that is, the translation plate 62 connected to the sliding columns 611 can be driven to move in the direction of the first pressing roller 3, that is, the translation plate 62 can move in the direction of the first pressing roller 3 synchronously, and at the same time, the hinge columns 621 also rotate, as shown in fig. 3, to be in an initial state, and then after the hinge columns 621 rotate, the device can move to the state shown in fig. 4, in the moving process, through the arrangement of the hinge columns 621 and the translation plate 62, not only the parallel between the pressing plate 61 and the support frame 1 can be always maintained, but also the stability of the pressing plate 61 during moving can be further improved, through the double guiding with the chute 632, the stable movement is realized, and the spunlace fibers can be pressed conveniently;

in the process of moving the translation plate 62, the sliding column 611 and the translation plate 62 rotate relatively, that is, the guide block 622 inserted in the spiral groove 6111 also moves relatively to the spiral groove 6111, that is, the sliding column 611 can gradually move in the direction away from the pressing plate 61 under the action of the spiral groove 6111 and the guide block 622, that is, the pressing plate 61 can be driven to move in the direction toward the translation plate 62, and the pressing plate 61 can slide downward in the direction toward the first pressing roller 3 and also slide in the direction away from the support frame 1, that is, the spunlace fibers can be pulled, the spunlace position can be laterally pulled outward, that is, the pressing plates 61 arranged at both ends respectively pull in the directions of arrows a and b in fig. 1, that is, the spunlace fibers can be pulled and laid flat, so that the first pressing roller 3 can compact the spunlace fibers;

in the process that the pressing plate 61 moves towards the translation plate 62, the unlocking block 623 arranged on the translation plate 62 gradually moves towards the direction of the limiting block 612, then, in the process of movement, the inclined surface 6121 arranged on the unlocking block 623 gradually presses the inclined surface 6121 arranged on the limiting block 612, i.e., under its pressing force, the stopper 612 can be moved toward the elastic member 613, so that the stopper 612 is gradually disengaged from the locking groove 6101, when the sliding block 6112 is completely out of the locking slot 6101, the sliding block 6112 is not locked by the positioning block 612, namely, the pressing plate 61 can slide, and then under the continuous sliding of the sliding rod 63, the pressing plate 61 can be driven to move forward to one end to displace, i.e. the pressing plate 61 is moved synchronously by a distance in the direction of the first pressing roller 3 in the pressed state, namely, the spunlace fibers at the pressing section are in a relatively flat state and enter the first pressing roller 3 for compaction, until the pressing plate 614 moves to the lower part of the first pressing roller 3, the rotating deflector rod 31 connected to the first pressing roller 3 is separated from the stop block 631, that is, the stopper 631 is not subjected to the pressing force of the lever any more, and then the slide bar 63 can be instantly restored to the initial state under the spring provided at one end of the slide bar 63, and the hinge post 621 is also returned to a state of being perpendicular to the support frame 1 by the elastic force of the torsion spring, that is, other structures can be restored to the initial state, and the sliding block 6112 moves to the position corresponding to the stopper 612, and under the setting of the rounded corner, the stopper 612 compresses first, then in sliding to locking groove 6101, lock it, then under the uniform velocity of first pressing roller 3 rotates, can drive next and rotate driving lever 31 and stir dog 631, drive according to above-mentioned principle, realize lasting pulling of spunlace fibre and pull the pressure.

Further, the present invention also provides a spunlace nonwoven fabric production line, which includes the spunlace fiber lapping crossing mechanism, and therefore, the spunlace nonwoven fabric production line provided in the present invention should also have the same beneficial effects as above, which are not described in detail.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a water thorn fibre lapping cross mechanism, includes support frame (1) and support (4), just support (4) are provided with reciprocating motion's the subassembly of laying, just be provided with first compression roller (3) on support frame (1), its characterized in that: the two pressing mechanisms (6) are arranged above the support frame (1), and the two pressing mechanisms (6) are positioned between the laying component and the first pressing roller (3);

the pressing mechanism (6) comprises a pressing plate (61) and a pulling assembly for pulling the pressing plate (61), the pulling assembly comprises a sliding rod (63) which is arranged in a sliding mode, one end of the sliding rod (63) is provided with a chute (632), and one end of the pressing plate (61) is arranged in the chute (632) in a sliding mode through a connecting column (615);

in the rotating process of the first pressing roll (3), the driving component drives the sliding rod (63) to move so as to drive the pressing plate (61) to move downwards along the inclined groove (632) and gradually press the two ends of the spunlace fibers;

the connecting column (615) is arranged on the pressing plate (61) in a transverse sliding mode along the direction perpendicular to the conveying direction of the spunlace fibers, the upper end of the inclined groove (632) inclines towards the direction of the rotating deflector rod (31), and the other end of the connecting column (615) is connected in the inclined groove (632) in a sliding mode.

2. A hydroentangled fibre-laying crossmember according to claim 1, characterized in that the driving assembly comprises a rotary dog (31) fixedly arranged on the first pressing roller (3), and the sliding rod (63) has a stop (631) at one end, which during rotation of the first pressing roller (3) can move the rotary dog (31) to slide the stop (631).

3. A hydroentangled fibre-laydown crossmechanism according to claim 1, characterized in that the hold-down mechanism (6) further comprises a hinged post (621) rotatably arranged on the support frame (1) and a translating plate (62) parallel to the support frame (1), and the other end of the hinged post (621) is rotatably arranged on the translating plate (62) and parallel between the two hinged posts (621).

4. A hydroentangling fiber lapping cross-mechanism according to claim 1, characterized in that the two pressing plates (61) can be respectively driven to slide laterally outward by the shaft assemblies while the two sliding rods (63) slide, and the translation plate (62) is driven to translate obliquely forward while sliding.

5. A hydroentangling fiber lapping crossing mechanism according to claim 4, wherein the shaft assembly comprises a sliding block (6112) slidably disposed along the long side direction of the hold-down plate (61) and a sliding post (611) fixedly disposed on the sliding block (6112), the sliding post (611) is inserted into the translation plate (62) in a penetrating manner, the outer wall of the sliding post (611) is provided with a spiral groove (6111), the translation plate (62) is fixedly connected with a guide block (622) therein, and the guide block (622) is inserted into the spiral groove (6111).

6. A hydroentangling fiber lapping cross mechanism according to claim 5, characterized in that during the movement of the pressing plate (61), the sliding column (611) is relatively rotated along the translation plate (62) to relatively slide the guide block (622) in the guide slot, and at the same time, the sliding column (611) is driven to move toward the translation plate (62) to slide the pressing plate (61) laterally and outwardly.

7. A hydroentangled fibre-laying cross-mechanism according to claim 6, characterized in that it further comprises a locking assembly, arranged on the pressing plate (61), which, after the movement of the pressing plate (61) towards the translation plate (62), actuates the locking assembly to unlock so that the sliding block (6112) can slide relative to the pressing plate (61).

8. A hydroentangled fiber lapping cross mechanism according to claim 7, characterized in that the locking assembly comprises a locking groove (6101) opened on the sliding block (6112) and a stopper (612) slidingly arranged on the pressing plate (61), and an elastic member (613) is arranged between the stopper (612) and the pressing plate (61), and under the elasticity of the elastic member (613), the stopper (612) can be inserted into the locking groove (6101) to limit the sliding of the sliding block (6112);

an unlocking block (623) which is matched with the limiting block (612) in the direction is fixedly arranged on the translation plate (62), and an inclined plane (6121) arranged on the unlocking block (623) is matched with the inclined plane (6121) arranged on the limiting block (612).

9. A hydroentangled nonwoven production line, characterized in that it comprises a hydroentangled fiber lapping cross-mechanism according to any one of claims 1 to 8.