阅读说明：本技术 一种针刺复合型防草布及其生产线和工艺 (Needling composite grass-prevention cloth and production line and process thereof ) 是由 王俊全 于 2019-09-16 设计创作，主要内容包括：本发明涉及一种针刺复合型防草布及其生产线和工艺,其包括配比原料、挤出膜片、水冷凝固、挤压凸点、膜片分切、牵伸胚丝、定型胚丝、编织成布、针刺复合、热分切和收卷这十一个步骤,该方法生产的防草布透水和透气性能良好,不易出现相互交错的扁丝之间缝隙被沙土堵塞的情况的效果。(The invention relates to a needling composite grass-prevention cloth and a production line and a process thereof, which comprises eleven steps of proportioning raw materials, extruding a membrane, solidifying by water condensation, extruding salient points, cutting the membrane, drafting a gray filament, shaping the gray filament, weaving into cloth, needling composite, hot cutting and rolling.)

1. The utility model provides a compound grass cloth that prevents of acupuncture, includes the cloth body, its characterized in that, the cloth body including mould and weave cloth and non-woven fabrics, mould and weave cloth and non-woven fabrics and pass through the acupuncture pressfitting and be connected, and the edge of cloth body cuts through hot slitting machine and forms the hot-melt limit, mould and weave cloth including the ribbon fiber, integrated into one piece has one row of convex closure on the ribbon fiber, the convex closure sets up along the ribbon fiber, mould and weave cloth and form by fore-and-aft ribbon fiber and horizontal ribbon fiber crisscross weaving each other.

2. A production process of a needle-punched composite grass cloth is characterized by comprising the following steps: the method comprises the following steps:

step 1: mixing the raw materials with color master batch after proportioning, so that the color master batch is uniformly distributed in the raw materials;

step 2: heating the mixed raw materials and extruding the raw materials into a diaphragm;

and step 3: cooling the membrane with water, and performing primary solidification;

and 4, step 4: uniformly extruding a plurality of rows of convex points on the surface of the membrane, wherein the straight line where each row of convex points is located is parallel to the transmission direction of the membrane, and the distances between two adjacent rows of convex points are equal;

and 5: cutting the film extruded with the salient points to form embryonic filaments, wherein each embryonic filament is provided with at least one row of salient points;

step 6: heating and drafting the blank filament to form a flat filament, and stretching the convex points on the flat filament to form convex hulls, wherein the cross sections of the convex hulls are larger than the convex points, and the thickness of the convex hulls is smaller than that of the convex points;

and 7: carrying out heat setting treatment on the flat filaments;

and 8: weaving the flat filaments into plastic woven cloth;

and step 9: carrying out needling and pressing on the plastic woven cloth and the non-woven cloth to fixedly connect the plastic woven cloth and the non-woven cloth to form a needling composite weed-proof cloth;

step 10: performing hot cutting on the needled composite grass-prevention cloth to ensure that the cut edge of the needled composite grass-prevention cloth is hot-melted and condensed into a hot-melted edge;

step 11: and rolling the cut needling composite grass prevention cloth to finish the processing.

3. The utility model provides a production line of compound grass cloth of preventing of acupuncture which characterized in that: comprises a stirrer, an extruder, a cooling water tank, an extrusion device, a cutting device, a heating oven, a shaping oven, a knitting machine, a needling machine, a hot slitting machine and a winding machine which are arranged in sequence; the extrusion device include the frame, rotate in the frame and install embossing roll and forming roll, be provided with a plurality of rings of suppression lugs on the surface of embossing roll, the axis of plane perpendicular to embossing roll at round suppression lug place, distance between two adjacent rings of suppression lugs equals, there is the space at the interval between embossing roll and the forming roll, the distance between one end that the embossing roll was kept away from to the suppression lug and the embossing roll is less than the distance between embossing roll and the forming roll, two adjacent rings of suppression lugs set the structure of crisscross each other.

4. A production line of a needle-punched composite grass cloth according to claim 3, characterized in that: cutting device include cutting blade and accept the groove, cutting blade fixed mounting on the embossing roll, accept the groove and set up on the forming roll, cutting blade sets up to the ring form, and cutting blade's axis is located same straight line with the axis of embossing roll, be provided with round suppression lug at least between two adjacent cutting blade, it is annular groove to accept the groove, and the quantity of accepting the groove equals with cutting blade's quantity, and every cutting blade all has one to accept the groove rather than corresponding, cutting blade and the groove of accepting that corresponds with this cutting blade are located the coplanar, distance between cutting blade's edge and the embossing roll is greater than the distance between one end that the embossing roll was kept away from to the suppression lug and the embossing roll.

5. The production line of the needle-punched composite grass cloth as claimed in claim 4, wherein: the edge of the cutting blade is embedded in the bearing groove corresponding to the cutting blade.

6. A production line of a needle-punched composite grass cloth according to claim 3, characterized in that: the cross section of the pressing bump is oval, the long axis of the oval is parallel to the axis of the pressing roller, and the cross section of one end, connected with the pressing roller, of the pressing bump is larger than that of one end, far away from the pressing roller, of the pressing bump.

7. The production line of the needle-punched composite grass cloth as claimed in claim 4, wherein: the pressing roller is fixedly provided with a pressing gear, the forming roller is fixedly provided with a forming gear, the pressing gear and the forming gear are meshed with each other, and the reference circle diameter of the pressing gear is smaller than that of the forming gear.

8. The production line of the needle-punched composite grass cloth as claimed in claim 7, wherein: the frame on install two tensioning rollers, the tensioning roller is parallel with the embossing roll, and respectively be provided with one in the both sides of embossing roll, the height at two tensioning rollers all is less than the height at shaping roller place.

9. The production line of the needle-punched composite grass cloth of claim 8, characterized in that: the frame on install elasticity stop device, elasticity stop device respectively installs one at the both ends of tensioning roller, elasticity stop device includes the spacing guide rail of perpendicular to embossing roll, the equal fixed mounting in tensioning roller both ends has along the gliding stopper of spacing guide rail, installs the elastic component that is used for the pulling tensioning roller to keep away from the embossing roll on spacing guide rail.

10. The production line of the needle-punched composite grass cloth as claimed in claim 9, wherein: the length that is located the tensioning roller that the frame kept away from water cooling plant one side be greater than the length of embossing roll, fixed mounting has the separated time piece on this tensioning roller, separated time piece perpendicular to tensioning roller, the quantity of separated time piece equals with cutting blade's quantity, and the distance between two adjacent separated time pieces equals and is greater than the distance between two adjacent cutting blade, the edge of separated time piece sets to the sword mouth form.

Technical Field

The invention relates to the technical field of garden equipment, in particular to a needling composite grass-prevention cloth and a production line and a process thereof.

Background

At present, when crops are planted, weeds need to be prevented and treated, and the weeds are covered by grass prevention cloth in a common treatment method at present, and the grass prevention cloth shields sunlight in areas except the crops, so that the weeds cannot be subjected to photosynthesis, and the purpose of grass prevention is achieved. The method does not need to use herbicide, is ecological and environment-friendly, and gradually becomes a popular agricultural weed control mode. In the implementation process, dark woven cloth or water-permeable non-woven cloth or plastic film is usually used as the grass prevention cloth, the grass prevention cloth is paved on soil before planting, the grass prevention cloth is fixed on the ground through fixing pieces such as nails, an opening is formed in the planting position on the grass prevention cloth, crops are planted, and plants such as weeds and the like cannot grow at other parts due to the fact that the grass prevention cloth blocks sunlight.

At present, the needling composite grass-proof cloth is mainly made of raw materials into plastic flat wires, the flat wires are woven into plastic woven cloth, the plastic woven cloth and non-woven cloth are connected in a pressing mode through a needling machine, and then the edge of the grass-proof cloth is fixed through a hot slitting machine. The grass prevention cloth mainly enables water and air to pass through the gaps between the woven flat wires, but because the gaps between the plastic woven cloth are few, the water permeability and the air permeability of the grass prevention cloth are general, sand falls on the upper side of the grass prevention cloth after the grass prevention cloth is used for a period of time easily, gaps between the flat wires which are mutually staggered are blocked, and then water cannot permeate well, soil shielded by the grass prevention cloth cannot be watered well, and plant growth is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the needling composite grass-prevention cloth which has good water permeability and air permeability and is not easy to cause the condition that gaps among flat wires which are staggered with each other are blocked by sand; the second purpose of the invention is to provide a production process of the needled composite grass-prevention cloth, and the third purpose of the invention is to provide a production line of the needled composite grass-prevention cloth.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a compound grass cloth that prevents of acupuncture, includes the cloth body, its characterized in that, the cloth body including mould and weave cloth and non-woven fabrics, mould and weave cloth and non-woven fabrics and pass through the acupuncture pressfitting and be connected, and the edge of cloth body cuts through hot slitting machine and forms the hot-melt limit, mould and weave cloth including the ribbon fiber, integrated into one piece has one row of convex closure on the ribbon fiber, the convex closure sets up along the ribbon fiber, mould and weave cloth and form by fore-and-aft ribbon fiber and horizontal ribbon fiber crisscross weaving each other.

By adopting the technical scheme, the convex hulls are uniformly distributed on the flat wires for weaving the plastic woven cloth, when the plastic woven cloth is woven by using the flat wires, part of the convex hulls are positioned between the two flat wires which are staggered with each other, so that the gap between the two flat wires which are staggered with each other is increased, and the water permeability and the air permeability of the grass prevention cloth are effectively improved. When the sand falls to the upper side of the grass cloth, the sand can more easily penetrate through the gaps of the plastic woven cloth on the upper surface of the grass cloth, and the condition that the sand blocks the gaps among the flat wires which are staggered with each other is not easy to occur. The grass prevention cloth has strong water permeability and air permeability, and is beneficial to the normal growth of plants. And because under the effect of non-woven fabrics, even increased the gap size of plastic woven cloth upside, also be difficult for sunshine to see through the gap and pass whole grass cloth of preventing, still can normally play the effect of preventing the grass.

A production process of a needle-punched composite grass cloth is characterized by comprising the following steps: the method comprises the following steps:

step 1: mixing the raw materials with color master batch after proportioning, so that the color master batch is uniformly distributed in the raw materials;

step 2: heating the mixed raw materials and extruding the raw materials into a diaphragm;

and step 3: cooling the membrane with water, and performing primary solidification;

and 4, step 4: uniformly extruding a plurality of rows of convex points on the surface of the membrane, wherein the straight line where each row of convex points is located is parallel to the transmission direction of the membrane, and the distances between two adjacent rows of convex points are equal;

and 5: cutting the film extruded with the salient points to form embryonic filaments, wherein each embryonic filament is provided with at least one row of salient points;

step 6: heating and drafting the blank filament to form a flat filament, and stretching the convex points on the flat filament to form convex hulls, wherein the cross sections of the convex hulls are larger than the convex points, and the thickness of the convex hulls is smaller than that of the convex points;

and 7: carrying out heat setting treatment on the flat filaments;

and 8: weaving the flat filaments into plastic woven cloth;

and step 9: carrying out needling and pressing on the plastic woven cloth and the non-woven cloth to fixedly connect the plastic woven cloth and the non-woven cloth to form a needling composite weed-proof cloth;

step 10: performing hot cutting on the needled composite grass-prevention cloth to ensure that the cut edge of the needled composite grass-prevention cloth is hot-melted and condensed into a hot-melted edge;

step 11: and rolling the cut needling composite grass prevention cloth to finish the processing.

Through adopting above-mentioned technical scheme, after raw materials and look female stirring, extrude into the diaphragm, later extrude the bump on the diaphragm, because the diaphragm is a whole, be convenient for extrude processing and go out the bump, later cut again. For convenience of processing, the membrane is usually thicker than the flat filament for weaving, so the blank filament obtained by cutting the membrane needs to be heated and drawn, the extruded convex points of the flat filament are drawn into convex hulls, the convex hulls are shaped at constant temperature to obtain stable flat filaments, and then the flat filaments are woven into plastic woven cloth. The plastic woven cloth is then needled and pressed with the non-woven cloth, so that the non-woven cloth and the plastic woven cloth are not bonded by glue and other substances, and gaps among the flat wires which are staggered with each other on the plastic woven cloth are well protected. At last, the edge of the needle-punched compound grass cloth is subjected to hot melting condensation to form a hot-melting edge, the plastic woven cloth is fixedly connected with the non-woven cloth, the plastic woven cloth is not easy to be connected with the non-woven cloth stably due to cutting of the edge of the cloth body, and the plastic woven cloth and the non-woven cloth are separated.

The invention is further configured to: the utility model provides a production line of compound grass cloth of preventing of acupuncture which characterized in that: comprises a stirrer, an extruder, a cooling water tank, an extrusion device, a cutting device, a heating oven, a shaping oven, a knitting machine, a needling machine, a hot slitting machine and a winding machine which are arranged in sequence; the extrusion device include the frame, rotate in the frame and install embossing roll and forming roll, be provided with a plurality of rings of suppression lugs on the surface of embossing roll, the axis of plane perpendicular to embossing roll at round suppression lug place, distance between two adjacent rings of suppression lugs equals, there is the space at the interval between embossing roll and the forming roll, the distance between one end that the embossing roll was kept away from to the suppression lug and the embossing roll is less than the distance between embossing roll and the forming roll, two adjacent rings of suppression lugs set the structure of crisscross each other.

By adopting the technical scheme, the stirrer is used for uniformly mixing the color cloth and the raw materials, then the mixed materials are added into the extruder, extruding the raw materials into a membrane, primarily cooling the extruded membrane through a cooling water pool to harden the soft membrane which is just extruded out, facilitating the extrusion of salient points by a subsequent extruding device, cutting the membrane into blank wires by a cutting device, softening and stretching the blank wires by a heating oven, then the flat yarn is shaped into flat yarn which can be used for weaving through a shaping oven for heat preservation, the flat yarn is woven into plastic woven cloth through woven cloth, the plastic woven cloth is processed by a needle machine, and finally, hot cutting the edge of the needled composite grass-proof cloth through a hot cutting slitting machine to form a hot melt edge, and finally rolling the hot melt edge through a rolling machine to finish processing. The forming roller in the extruding device is used for supporting the membrane to be extruded, and the pressing convex blocks arranged on the pressing roller are used for extruding convex points on the membrane. The positions of the processed salient points are staggered, and gaps are reserved between the pressing salient points and the pressing roller, so that the phenomenon that the membrane is damaged due to too deep pressing of the salient points is not easy to occur.

The invention is further configured to: cutting device include cutting blade and accept the groove, cutting blade fixed mounting on the embossing roll, accept the groove and set up on the forming roll, cutting blade sets up to the ring form, and cutting blade's axis is located same straight line with the axis of embossing roll, be provided with round suppression lug at least between two adjacent cutting blade, it is annular groove to accept the groove, and the quantity of accepting the groove equals with cutting blade's quantity, and every cutting blade all has one to accept the groove rather than corresponding, cutting blade and the groove of accepting that corresponds with this cutting blade are located the coplanar, distance between cutting blade's edge and the embossing roll is greater than the distance between one end that the embossing roll was kept away from to the suppression lug and the embossing roll.

By adopting the technical scheme, the cutting blade is arranged on the pressing roller, the bearing groove is arranged on the forming roller, and the cutting is carried out in the pressing process of the diaphragm to form the convex points, so that the structure is more compact, and the phenomenon of dislocation of the convex points on the cut embryonic filaments due to errors is not easy to occur; a row of salient points can be arranged on each embryonic filament. Because the distance between the edge of the cutting blade and the pressing roller is larger than the distance between one end of the pressing bump far away from the pressing roller and the pressing roller, when the bump is pressed, the film sheet is already cut by the cutting blade, the bump at the pressing position is not easy to appear, and the film sheet is not cut.

The invention is further configured to: the edge of the cutting blade is embedded in the bearing groove corresponding to the cutting blade.

Through adopting above-mentioned technical scheme, because the edge setting of cutting blade is in accepting the inslot, can be more firm cut the diaphragm, the difficult incomplete phenomenon of cutting that appears.

The invention is further configured to: the cross section of the pressing bump is oval, the long axis of the oval is parallel to the axis of the pressing roller, and the cross section of one end, connected with the pressing roller, of the pressing bump is larger than that of one end, far away from the pressing roller, of the pressing bump.

By adopting the technical scheme, when the pressing bump is used for pressing the film piece, the pressed bump is in an oval shape. The film is cut into a blank filament, and the blank filament is stretched by a subsequent heating oven to become a flat filament. In the process of stretching into the flat filament, the oval-shaped salient points on the blank filament are gradually stretched, so that the stretched salient points can be more similar to a circle, the distribution of the salient points on the woven plastic woven cloth is more uniform, and the quality of the plastic woven cloth woven by using the flat filament is improved.

The invention is further configured to: the pressing roller is fixedly provided with a pressing gear, the forming roller is fixedly provided with a forming gear, the pressing gear and the forming gear are meshed with each other, and the reference circle diameter of the pressing gear is smaller than that of the forming gear.

By adopting the technical scheme, when the forming gear rotates for one turn, the number of turns of the pressing roller is more. Because the protruding points needed to be pressed on the membrane need to be dense, the protruding points are not easy to be too sparse in the process of stretching the embryonic filament, and the situation of increasing the size of the pores on the plastic woven cloth cannot be achieved. The structure can simply press dense convex points on the membrane, and the structure can reduce the number of pressing blocks on the pressing roller, so that the pressing roller can be processed more easily.

The invention is further configured to: the frame on install two tensioning rollers, the tensioning roller is parallel with the embossing roll, and respectively be provided with one in the both sides of embossing roll, the height at two tensioning rollers all is less than the height at shaping roller place.

Through adopting above-mentioned technical scheme, because the embossing roll compares in the forming roll, the pivoted is faster, and the diaphragm needs follow the forming roll and carry, consequently through being provided with the tensioning roller, makes the diaphragm tightly laminate with the forming roll to make the diaphragm not carry along the embossing roll in the lump, thereby it is faster to reach the embossing roll pivoted than the forming roll, and then extrude the purpose of more intensive bump on the diaphragm.

The invention is further configured to: the frame on install elasticity stop device, elasticity stop device respectively installs one at the both ends of tensioning roller, elasticity stop device includes the spacing guide rail of perpendicular to embossing roll, the equal fixed mounting in tensioning roller both ends has along the gliding stopper of spacing guide rail, installs the elastic component that is used for the pulling tensioning roller to keep away from the embossing roll on spacing guide rail.

Through adopting above-mentioned technical scheme, make the tensioning roller can remove along limit guide to through being provided with the elastic component, the elastic component can play the effect of buffering, makes the tensioning roller be difficult for resulting in the fracture because of the tension is too tight, has effectively reduced the cracked phenomenon of diaphragm.

The invention is further configured to: the length that is located the tensioning roller that the frame kept away from water cooling plant one side be greater than the length of embossing roll, fixed mounting has the separated time piece on this tensioning roller, separated time piece perpendicular to tensioning roller, the quantity of separated time piece equals with cutting blade's quantity, and the distance between two adjacent separated time pieces equals and is greater than the distance between two adjacent cutting blade, the edge of separated time piece sets to the sword mouth form.

By adopting the technical scheme, after the diaphragm passing through the pressing roller is cut into the embryonic fibers, the embryonic fibers are respectively arranged between the two adjacent thread separating sheets, so that the embryonic fibers can be well separated, the phenomenon that the embryonic fibers are wound together due to the fact that the embryonic fibers are arranged in parallel is not easy to occur, and the yield is improved. The yarn dividing sheet can achieve a certain cutting effect, further cuts the uncut blank yarn, and is not easy to break the blank yarn which is not cut completely due to the fact that the edge of the yarn dividing sheet is blunt.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the grass-prevention cloth produced by the method has good water permeability and air permeability, and the condition that gaps among the flat wires which are staggered with each other are blocked by sand is not easy to occur;

2. the blank wire can be well cut apart, the phenomenon that the blank wire is wound together and the phenomenon that the blank wire is broken are not easy to occur, and subsequent processing is facilitated.

Drawings

FIG. 1 is a schematic view of the structure of a cloth body;

FIG. 2 is a flow chart of the present production process;

FIG. 3 is a schematic view of a production line of the needle-punched composite grass protection cloth;

FIG. 4 is a schematic view of the structure of the pressing device and the slitting device;

fig. 5 is an enlarged schematic view of a portion a in fig. 4.

In the figure, 1, a cloth body; 11. plastic woven cloth; 12. non-woven fabrics; 13. hot melting edge; 14. flattening the filaments; 15. a convex hull; 2. a frame; 21. pressing rollers; 22. pressing the bumps; 23. pressing the gear; 3. a forming roller; 31. forming a gear; 4. a cutting blade; 41. a receiving groove; 5. a tension roller; 51. a long roll; 52. a short roll; 6. an elastic limiting device; 61. limiting a guide rail; 611. a straight rod; 612. a limiting groove; 613. a limiting block; 62. an elastic member; 7. and a wire distributing sheet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the needle-punched composite grass cloth comprises a cloth body 1, wherein the cloth body 1 comprises a plastic woven cloth 11 and a non-woven cloth 12, the plastic woven cloth 11 is tightly attached to the non-woven cloth 12, and a hot-melt edge 13 is arranged at the edge of the cloth body 1. The plastic woven cloth 11 comprises flat wires 14 which are woven together in a staggered mode, a row of convex hulls 15 are integrally formed on the flat wires 14, and the convex hulls 15 are arranged along the flat wires 14.

Referring to fig. 2, the production process of the needle-punched composite grass cloth disclosed by the invention comprises the following steps:

step 1, proportioning raw materials, namely mixing a polypropylene raw material for preparing the plastic woven cloth 11 with color master batch in a proportioning manner, so that the color master batch is uniformly distributed in the polypropylene raw material;

step 2, extruding a diaphragm, namely adding the mixed polypropylene raw material into a feed hopper of an extruder, heating the polypropylene raw material, and then extruding the polypropylene raw material into the diaphragm through a die at an extrusion port of the extruder;

step 3, water condensation and solidification, namely cooling the extruded diaphragm by water through a water cooling device, so that the diaphragm which is just extruded and has higher temperature is primarily solidified, and subsequent processing is facilitated;

step 4, extruding the salient points, namely uniformly extruding a plurality of rows of the salient points on the preliminarily solidified membrane through an extruding device, wherein the straight line where one row of the salient points is located is parallel to the transmission direction of the membrane, and the distances between two adjacent rows of the salient points are equal;

step 5, cutting the diaphragm, wherein after the salient points are extruded on the diaphragm, the diaphragm is cut through a cutting device to form a plurality of blank wires, and each blank wire is provided with at least one row of salient points;

step 6, drafting the blank filament, wherein the blank filament is drafted through a heating oven to form a flat filament 14, and the salient points on the flat filament 14 are stretched to form convex hulls 15, the cross sections of the convex hulls 15 are larger than the salient points, and the thickness of the convex hulls 15 is smaller than that of the salient points;

step 7, shaping the embryonic filaments, and carrying out heating shaping treatment on the embryonic filaments by a shaping oven;

step 8, weaving into cloth, and weaving the flat filaments 14 into the plastic woven cloth 11 through a weaving machine;

step 9, needle-punching compounding, namely laminating the plastic woven fabric 11 and the PET non-woven fabric 12, and performing needle-punching lamination through a needle-punching machine to form needle-punching compound weed-proofing cloth, so that the plastic woven fabric 11 and the non-woven fabric 12 are not bonded by other binders;

step 10, hot slitting, namely slitting the needled composite grass-prevention cloth through a hot slitting machine, so that the cut edge of the needled composite grass-prevention cloth is subjected to hot melting condensation to form a hot-melting edge 13 which is difficult to separate;

and 11, rolling, namely rolling the cut needle-punched composite grass-prevention cloth to finish processing.

Referring to fig. 3, a production line of a needle-punched composite grass cloth comprises a stirrer, an extruder, a cooling water tank, an extrusion device, a cutting device, a heating oven, a setting oven, a knitting machine, a needle machine, a hot slitting machine and a winding machine which are arranged in sequence. The stirring machine is used for realizing the uniform mixing of the colored cloth and the raw materials, then the mixed materials are added into the extruder and extruded into a film, then the extruded film is primarily cooled through the cooling water tank, the soft film which is just extruded is hardened, the convex points are extruded by the subsequent extruding device conveniently, the cutting device is used for cutting the film into blank wires, then the blank wires are softened and stretched through the heating oven, then the blank wires are heat-preserved and shaped through the shaping oven, the blank wires 14 which can be used for weaving are formed, the flat wires 14 are woven into the plastic woven cloth 11 through the woven cloth, the plastic woven cloth 11 is in needle punching and pressing fit with the non-woven cloth 12 under the processing of the needle punching machine to form the needle punching composite grass-proof cloth, finally, the edge of the needle punching composite grass-proof cloth is hot-cut through the hot cutting and slitting machine, a hot melt edge 13 is formed by rolling, and finally the processing can be finished. The forming roller 3 in the pressing device is used for supporting the membrane to be pressed, and the pressing convex blocks 22 arranged on the pressing roller 21 are used for extruding convex points on the membrane. The positions of the processed salient points are staggered, and gaps are formed between the pressing salient points 22 and the pressing roller 21, so that the phenomenon that the membrane is damaged due to too deep pressing of the salient points is not easy to occur.

Referring to fig. 4 and 5, the extrusion device comprises a frame 2, a pressing roller 21 and a forming roller 3 are rotatably mounted on the frame 2, the length of the pressing roller 21 is equal to that of the forming roller 3, the pressing roller 21 is positioned right above the forming roller 3, and a plurality of circles of pressing lugs 22 are welded on the outer surface of the pressing roller 21. The plane of one circle of pressing lugs 22 is perpendicular to the axis of the pressing roller 21, the distance between two adjacent circles of pressing lugs 22 is equal, and the two adjacent circles of pressing lugs 22 are arranged in a staggered mode. The cross section of the pressing bump 22 is oval, the long axis of the oval is parallel to the axis of the pressing roller 21, and the cross section of one end, close to the pressing roller 21, of the pressing bump 22 is always larger than that of one end, far away from the pressing roller 21. A gap is arranged between the forming roller 3 and the pressing roller 21, and the distance between the forming roller 3 and the pressing roller 21 is larger than the distance between one end of the pressing bump 22 far away from the pressing roller 21 and the pressing roller 21. One end of the pressing roller 21 is fixedly provided with a pressing gear 23, one end of the forming roller 3 is fixedly provided with a forming gear 31, the pressing gear 23 and the forming gear 31 are mutually attached, and the reference circle diameter of the pressing gear 23 is smaller than that of the forming gear 31.

Referring to fig. 4 and 5, a cutting device including a cutting blade 4 and a receiving groove 41 is provided on the pressing roller 21 and the forming roller 3. Cutting blade 4 is ring shape and fixed mounting on embossing roll 21, and cutting blade 4's axis and embossing roll 21's axis are located same straight line, all are provided with a cutting blade 4 between two adjacent rings of suppression lugs 22 and embossing roll 21's both ends department, and the distance between two adjacent cutting blade 4 equals. The forming roller 3 is provided with receiving grooves 41, the receiving grooves 41 are annular grooves, the number of the receiving grooves 41 is equal to the number of the cutting blades 4, each cutting blade 4 corresponds to one receiving groove 41, the cutting blades 4 and the corresponding receiving grooves 41 are located in the same plane, and the edges of the cutting blades 4 are embedded in the corresponding receiving grooves 41.

Referring to fig. 4 and 5, two tension rollers 5 are fixedly mounted on the frame 2, the two tension rollers 5 are parallel to the pressing roller 21, the tension rollers 5 are divided into a long roller 51 and a short roller 52, the length of the short roller 52 is greater than that of the pressing roller 21, the length of the long roller 51 is greater than that of the short roller 52, the short roller 52 is located on one side of the frame 2 close to the water cooling device, the long roller 51 is located on one side of the frame 2 far away from the water cooling device, and the heights of the tension rollers 5 are lower than that of the forming roller 3. Four elastic limiting devices 6 are fixedly arranged on the frame 2, and the elastic limiting devices 6 are respectively arranged at two ends of the long roller 51 and the short roller. The elastic stopper 6 includes a stopper rail 61 and an elastic member 62. The limiting guide rail 61 is vertically arranged, the limiting guide rail 61 is a straight rod 611, a limiting groove 612 is formed in the side face, close to the tensioning roller 5, of the straight rod 611, the limiting groove 612 is a dovetail groove, limiting blocks 613 are fixedly mounted at two ends of the tensioning roller 5, the cross section of each limiting block 613 is equal to that of the corresponding limiting groove 612, and the limiting blocks 613 slide along the sliding guide rail. The elastic member 62 is a spring, one end of the spring is fixedly connected to the lower end of the position-limiting guide rail 61, and the other end of the spring is fixedly connected to the position-limiting block 613 located in the position-limiting guide rail 61. After the film sheet is cooled by the water cooling device, it is passed around the lower side of the short roll, then passed around the upper side of the forming roll 3, and finally passed around the lower side of the long roll 51. Under the action of the spring, the two tensioning rollers 5 tension the membrane and make it closely fit with the upper side of the forming roller 3. Because the embossing roll 21 compares in the forming roll 3, the pivoted is faster, and the diaphragm needs follow the forming roll 3 and carry, consequently through being provided with tensioning roller 5, makes the diaphragm tightly laminate with the forming roll 3 to make the diaphragm not carry along embossing roll 21 in the lump, thereby reach embossing roll 21 pivoted faster than forming roll 3, extrude the purpose of more intensive bump on the diaphragm.

Referring to fig. 4 and 5, the thread separating pieces 7 are welded to the lower side edge of the long roller 51, the thread separating pieces 7 are perpendicular to the long roller 51, the number of the thread separating pieces 7 is equal to that of the cutting blades 4, and the edges of the thread separating pieces 7 are all arranged in a knife-edge shape. The middle point of the long roller 51 and the middle point of the pressing roller 21 are positioned in the same plane perpendicular to the pressing roller 21, and the distance between two adjacent branching sheets 7 is larger than the distance between two adjacent cutting blades 4. The wire dividing sheet 7 can achieve a certain splitting effect, further split the uncut embryonic filament, and reduce the probability of the embryonic filament fracture.

When the needling composite grass-prevention cloth is manufactured, raw materials are stirred and extruded into a membrane, then salient points are extruded out of the membrane through an extrusion device, and the membrane is cut through a cutting device to form embryonic fibers, and the embryonic fibers are woven into the plastic woven cloth 11 through a weaving machine after being stretched and shaped. In the woven fabric 11, the protruding points are formed on the flat filaments 14, and when the woven fabric is woven, a part of the protruding points are located between the two interlaced flat filaments 14, so that the gap between the two interlaced flat filaments 14 is increased. It can effectively improve this prevent grass cloth's the ability of permeating water and air permeability, when sand and soil fell to prevent grass cloth upside, can make sand and soil more easy pass prevent that grass cloth upper surface moulds the space of weaving cloth 11. The grass-prevention cloth produced by the method has good water permeability and air permeability, and the condition that gaps among the flat wires 14 which are staggered with each other are blocked by sandy soil is not easy to occur. And because under the effect of non-woven fabrics 12, even the gap size of the upper side of the plastic woven fabric 11 is increased, the sunshine is not easy to penetrate through the whole grass-proof fabric through the gap, and the grass-proof function can still be normally achieved.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.