CN112501785A - Production method and production equipment of high-strength non-woven fabric - Google Patents
Production method and production equipment of high-strength non-woven fabric Download PDFInfo
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- CN112501785A CN112501785A CN202011178765.6A CN202011178765A CN112501785A CN 112501785 A CN112501785 A CN 112501785A CN 202011178765 A CN202011178765 A CN 202011178765A CN 112501785 A CN112501785 A CN 112501785A
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000005098 hot rolling Methods 0.000 claims abstract description 132
- 238000009987 spinning Methods 0.000 claims abstract description 85
- 239000002994 raw material Substances 0.000 claims abstract description 51
- 238000004804 winding Methods 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims description 39
- 238000001816 cooling Methods 0.000 claims description 26
- 230000001681 protective effect Effects 0.000 claims description 22
- 238000004140 cleaning Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 10
- 238000005491 wire drawing Methods 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 8
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 12
- 238000005096 rolling process Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/106—Filtering
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/08—Supporting spinnerettes or other parts of spinnerette packs
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to the technical field of non-woven fabric production, in particular to a production method and production equipment of high-strength non-woven fabric, which comprises the following steps of S1-S5: s1: preparing raw materials, slicing the raw materials, and storing the sliced raw materials in a raw material box; s2: feeding the raw materials in the raw material box into a screw extruder through a gas flow conveying device, and melting and feeding the raw materials into a filter by the screw extruder; s3: feeding the raw materials filtered by the filter into a spinning box, and ejecting the raw materials from a nozzle at an angle of 40-45 degrees or minus 40-minus 45 degrees through air flow drafting to perform cross lapping; s4: hot-rolling the web by a hot-rolling mill apparatus, S5: and winding the formed non-woven fabric into a roll and packaging by a winding machine. According to the invention, by arranging the spinning assembly, the tensile strength of the non-woven fabric can be improved by changing the angle of the spray head, the phenomenon that the thickness of the non-woven fabric is uneven due to the fact that reinforcing ribs are added on the non-woven fabric is prevented, the qualification rate of products is improved, the production cost is reduced, and waste is avoided.
Description
Technical Field
The invention relates to the technical field of non-woven fabric production, in particular to a production method and production equipment of high-strength non-woven fabric.
Background
The non-woven fabric is a fabric formed without spinning and weaving, is reinforced by adopting methods such as machinery, thermal bonding or chemistry and the like, is very convenient to cut and sew, is light in weight and easy to shape, is popular with manual enthusiasts, and has higher and higher strength requirement along with the development of modern social production, so that the production method and the production equipment of the high-strength non-woven fabric are particularly important.
The traditional method for increasing the tensile strength of the non-woven fabric is characterized in that the number of the filaments in unit area is increased to increase the tensile strength of the non-woven fabric, the number of the filaments is increased, the number of the nozzles is increased, the non-woven fabric is uneven in longitudinal and transverse tensile strength distribution after forming, reinforcing ribs are added to the non-woven fabric in another method, the thickness of the non-woven fabric is uneven due to the reinforcing ribs, the complexity of the production process is increased, the reject ratio of the product is increased, and the production cost is increased while waste is caused.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a production method and production equipment of high-strength non-woven fabric.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for producing a high-strength nonwoven fabric includes the following steps S1-S5:
s1: preparing raw materials, slicing the raw materials, and storing the sliced raw materials in a raw material box;
s2: feeding the raw materials in the raw material box into a screw extruder through a gas flow conveying device, and melting and feeding the raw materials into a filter by the screw extruder;
s3: feeding the raw materials filtered by the filter into a spinning box, ejecting the raw materials from a spinning assembly at an angle of 40-45 degrees or minus 40-minus 45 degrees through air flow drafting, and performing cross lapping;
s4: hot rolling the mixture into a net by a hot rolling mill device;
s5: and winding the formed non-woven fabric into a roll and packaging by a winding machine.
Preferably, the raw material in step S1 is polypropylene, and the step S4 further includes: compressing and flattening the hot-rolled web-formed non-woven fabric, conveying the compressed web-formed non-woven fabric to a cooling device for cooling, wherein the step S3 further comprises the following steps: the cold air box is used for cooling the spinning box.
Preferably, the production equipment of the high-strength non-woven fabric comprises two or more groups of raw material boxes, a feeding hole, a screw extruder, an edge material recovery screw extruder, a filter, a metering pump, a spinning box, a monomer suction device, a cold air box, a refrigerator, an air conditioning box, a cooling fan, a stretcher, a fiber web, an air compressor, an air draft fan, a web former, a web forming cloth, a hot rolling machine device, a cooling device, a winding machine and a spinning assembly;
wherein the angles of the filter, the metering pump, the spinning box, the monomer suction, the cold air box, the stretcher and the spinning assembly are 40-45 degrees or minus 40-minus 45 degrees.
Preferably, the web forming machine transmits the web forming speed data to two or more groups of stretching machines, the two or more groups of stretching machines find corresponding wire drawing speed and fineness data in the storage thereof according to the web forming speed data, and the two or more groups of stretching machines exchange data through the web forming machines to ensure that the speed and the fineness are the same, the stretching machines transmit the wire drawing speed and the fineness data to the spinning assembly, the spinning assembly finds corresponding optimal spinning temperature and spinning speed in the storage thereof according to the wire drawing speed and the fineness data of the stretching machines, the spinning assembly transmits the optimal spinning temperature data and actual spinning temperature data to the air conditioning box and the air compressor, the air conditioning box and the air compressor find corresponding optimal cooling running speed in the storage thereof according to the optimal spinning temperature data and the actual spinning temperature data, the spinning assembly transmits the spinning speed data to the metering pump, and the metering pump controls the filtering speed of the filter according to the spinning speed data, the filter controls the extrusion speed of the screw extruder and the rim charge recycling screw extruder to be matched with the running speed of the screw extruder, and controls the screw extruder to control the raw material box and the feed inlet to be matched with the running speed of the screw extruder;
the net forming machine transmits net forming speed data to the hot rolling machine device, the hot rolling machine device adjusts the hot rolling temperature and the hot rolling speed according to the net forming speed data, the hot rolling machine device transmits the hot rolling temperature and the hot rolling speed data to the cooling device, the cooling device finds the optimal operation speed of corresponding temperature reduction in the storage according to the hot rolling temperature and the hot rolling speed, the hot rolling machine device transmits the hot rolling speed data to the winding machine, and the winding machine controls the operation speed of the winding machine according to the hot rolling speed.
Preferably, the upper surface of the screw extruder is communicated with a feed inlet, the raw material box is communicated with the feed inlet through a pipeline, and the top of the stretcher is fixedly provided with a spinning assembly.
Preferably, the hot rolling mill device includes the hot rolling mill body, the one end of hot rolling mill body is provided with control panel, one side of hot rolling mill body is provided with the device of restrainting, the opposite side of hot rolling mill body is provided with cleaning device, the surface of hot rolling mill body is provided with storage device, control panel's surface is provided with protector.
Preferably, the bundling device comprises a bottom plate, supporting plates are symmetrically and fixedly mounted on the surface of the bottom plate, transverse plates are fixedly mounted between the supporting plates, limiting plates are symmetrically and slidably connected between the transverse plates, a threaded rod is rotatably connected between the supporting plates, a connecting block is sleeved on the surface of the threaded rod and fixedly connected with the limiting plates, a protective shell is fixedly mounted on one side of each supporting plate, one end of the threaded rod penetrates through the supporting plates and extends into the protective shell, a driven wheel is fixedly mounted at one end of the threaded rod, a motor is fixedly mounted in the protective shell, the output end of the motor is rotatably connected with a driving wheel, and the driving wheel is meshed with the;
cleaning device includes the curb plate, one side of hot rolling mill body is rotated and is connected with the curb plate, one side fixed mounting of curb plate has the arc piece, the outside of curb plate is rotated and is connected with the connecting rod, the outside of hot rolling mill body is rotated and is connected with hydraulic telescoping rod, hydraulic telescoping rod's one end and connecting rod fixed connection.
Preferably, the storage device comprises a storage box, the storage box is fixedly mounted on the surface of the hot rolling mill body, a magnetic strip is fixedly mounted on one side of the storage box, a rectangular plate is rotatably connected to the other side of the storage box, a winding reel is fixedly mounted on one side of the rectangular plate, and a handle is fixedly mounted on the other side of the rectangular plate;
the protection device comprises a protection shell, the surface of the control panel is connected with the protection shell in a rotating mode, a frame is fixedly mounted on the inner side of the protection shell, a pull ring is connected on the outer side of the protection shell in a rotating mode, and a filler strip is mounted on the surface of the control panel in a fixed mode.
Preferably, the threaded rod is rotatably connected with the supporting plate through a bearing, threads are symmetrically formed in the surface of the threaded rod, threaded holes are formed in the connecting block, and the threaded rod is meshed with the threaded holes.
Preferably, the curb plate rotates through pivot and hot rolling mill body to be connected, the inboard fixed mounting of arc piece has the brush hair, hot rolling mill body outside fixed mounting has the lug, hydraulic telescoping rod rotates through pivot and lug to be connected.
Preferably, the surface of receiver is seted up jaggedly, the rectangular plate rotates through pivot and receiver to be connected.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the invention, after raw materials are extruded by a screw extruder, the raw materials are filtered by a filter and enter a spinning box for spinning, at the moment, a cold air box can continuously cool the spinning box, then a stretcher can carry out air flow drafting on the spinning, then the spinning can be sprayed out by a spinning assembly, meanwhile, two groups of spray heads are in different angles and different orientations, the angle of the first spinning assembly is 40-45 degrees, the angle of the second spinning assembly is minus 40-minus 45 degrees, so that strand silk can be crossly laid, and by arranging the spinning assembly, the number of the silk in unit area can be increased by changing the angle of the spray heads, so that the density of the silk is increased, the contact area between the silk and the silk is increased, and the tensile strength of the non-woven fabric is improved; because the invention adopts two groups or upper spray heads with symmetrical angles in the positive and negative directions, the requirement on the coordination of each mechanical component is higher compared with the prior two groups or more than two groups of parallel spray heads, the condition that the longitudinal and transverse tensile strength is not uniformly distributed after the non-woven fabric is formed due to the increase of the number of the spray heads is avoided through the coordinated control of the temperature and the speed among the lapper, the stretcher, the spinning component and the hot rolling machine device, the phenomenon that the thickness of the non-woven fabric is not uniform is prevented, the qualification rate of products is improved, the production cost is reduced, and the waste is avoided
2. In the invention, the bundling device is arranged, before the hot rolling machine is used for hot rolling the cross-lapped non-woven fabric into a net, the cross-lapped non-woven fabric can pass through a channel formed by the transverse plate and the limiting plate, then the hot rolling machine body is used for hot rolling net forming treatment, so that the lapped non-woven fabric can be bundled before hot rolling, thereby achieving better hot rolling effect, and further improving the strength of the non-woven fabric, when the width of the non-woven fabric is changed, the motor can be started to drive the driving wheel to rotate, the driving wheel drives the driven wheel to rotate, so that the driven wheel drives the threaded rod to rotate, the threaded rod can drive the connecting block to move along the threaded rod in the rotating process, thereby driving the limiting plate to slide inwards along the transverse plate, thereby changing the width of the channel, and enabling the cross-lapped non-woven fabric to obtain better bundling, wherein the protective housing plays the effect of protection action wheel, follow driving wheel and motor, prevents that the staff from touching the gear and be injured, through setting up this receipts and restrainting the device, the non-woven fabrics after making alternately lapping can obtain receiving the bundle before the hot rolling, has improved the effect of the hot rolling finished cloth of hot rolling mill body, has further improved the intensity of non-woven fabrics.
3. In the invention, by arranging the cleaning device, when the rolling wheel of the hot rolling mill body needs to be cleaned, the hydraulic telescopic rod is started to retract, thereby driving the connecting rod to move and enabling the side plate to rotate, when the hydraulic telescopic rod is completely retracted, the side plate is attached to the hot rolling mill body, the bristles on the surface of the arc-shaped block are attached to the rolling wheel of the hot rolling mill body, the hot rolling mill body is started at the moment to enable the rolling wheel to rotate, the brush hair on the surface of the arc block can clean the rolling wheel, after the cleaning is finished, the hydraulic rod is started to extend, thereby pushing the side plate to rotate, enabling the side plate to be parallel to the ground, and then the hot rolling mill body can be normally used, through setting up this cleaning device, make things convenient for the staff can be quick clean the wheel of rolling to the hot rolling mill body, saved clean required time, and then improved the processing production efficiency of non-woven fabrics.
4. According to the storage device, when the connecting wire of the hot rolling mill body is too long and needs to be stored, the rectangular plate is pulled to rotate by using the handle, the storage box can be opened, then the too long connecting wire can be wound on the bobbin, after the storage of the too long connecting wire is completed, the rectangular plate can be rotated, the rectangular plate is attached to the storage box, the bobbin is stored into the storage box, the magnetic strip attracts the rectangular plate to prevent the rectangular plate from rotating randomly, the bobbin can be limited in the storage box along with the connecting wire, the connecting wire is protected, the notch of the storage box plays a role in facilitating the passing of the connecting wire, and due to the arrangement of the storage device, workers can conveniently store the connecting wire of the hot rolling mill body, the connecting wire is protected, and the practicability of the storage device is greatly improved.
5. In the invention, by arranging the protective device, after the parameters of the control panel are set, the protective shell can be rotated to be attached to the control panel, and the frame can be clamped at the outer side of the control panel, so that the position of the protective shell is fixed, the protective shell is prevented from being easily rotated, the control panel can be protected, the worker can be prevented from accidentally touching the control panel in the working process to influence the normal operation of the hot rolling mill body, wherein the filler strip plays a role in separating the protective shell from the control panel, the protective shell is prevented from pressing a button on the surface of the control panel to influence the normal use of the control panel, when the control panel needs to be used again, the protective shell can be driven to rotate by pulling the pull ring, can reuse control panel, through setting up this protector, make things convenient for the staff to protect control panel, prevent that control panel from receiving the mistake and touching, improved the stability of hot rolling mill body operation.
Drawings
FIG. 1 is a schematic view of a process structure of a method and an apparatus for producing a high strength nonwoven fabric according to the present invention;
FIG. 2 is a schematic structural diagram of a spinning assembly of a production method and a production device for a high-strength non-woven fabric
FIG. 3 is a schematic view showing the overall structure of a hot rolling mill apparatus for a method and an apparatus for producing a high-strength nonwoven fabric according to the present invention;
FIG. 4 is a schematic front view of a hot rolling machine of a high strength nonwoven fabric production method and production equipment according to the present invention
FIG. 5 is a rear view of the hot rolling device of the production apparatus and the method for producing a high strength nonwoven fabric according to the present invention
FIG. 6 is a schematic structural view of a hot rolling mill device of a method and an apparatus for producing a high strength nonwoven fabric according to the present invention
Fig. 7 is a schematic structural diagram of the interior of the protective shell of a hot rolling mill device of the production method and production equipment for high-strength non-woven fabric according to the present invention.
Illustration of the drawings:
1. a raw material box; 2. a feed inlet; 3. a screw extruder; 4. an edge material recovery screw extruder; 5. a filter; 6. a metering pump; 7. a spinning box; 8. pumping the monomer; 9. a cold air box; 10. a freezer; 11. an air conditioning cabinet; 12. a cooling fan; 13. a stretcher; 14. a fiber web; 15. an air compressor; 16. an air draft fan; 17. a web former; 18. forming a mesh cloth; 19. a hot rolling mill device; 191. a hot mill body; 192. a control panel; 193. a bundling device; 1931. a base plate; 1932. a support plate; 1933. a transverse plate; 1934. a limiting plate; 1935. a threaded rod; 1936. connecting blocks; 1937. a protective shell; 1938. a driven wheel; 1939. a motor; 19310. a driving wheel; 194. a cleaning device; 1941. a side plate; 1942. an arc-shaped block; 1943. a connecting rod; 1944. a hydraulic telescopic rod; 195. a storage device; 1951. a storage box; 1952. a magnetic strip; 1953. a rectangular plate; 1954. a bobbin; 1955. a handle; 196. a guard; 1961. a protective shell; 1962. a frame; 1963. a pull ring; 1964. a filler strip; 20. a cooling device; 21. a winding machine; 22. and a spinning assembly.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
As shown in fig. 1 to 7, the present invention provides a method for producing a high-strength nonwoven fabric, comprising the following steps S1 to S5:
s1: preparing a raw material, namely polypropylene, slicing the raw material and storing the sliced raw material in a raw material box 1;
s2: feeding the raw materials in the raw material box 1 into a screw extruder 3 through a gas flow conveying device, and melting and feeding the raw materials into a filter 5 by the screw extruder 3;
s3: the raw materials filtered by the filter 5 are sent into a spinning box 7, a cold air box 9 is used for cooling the spinning box 7, and the raw materials are ejected out of a spinning assembly 22 at an angle of 40-45 degrees or minus 40-minus 45 degrees through air flow drafting to be crossly lapped;
s4: hot rolling the non-woven fabric into a net by a hot rolling mill device 19, compressing, flattening and conveying the non-woven fabric into a cooling device 20 for cooling;
s5: the formed nonwoven fabric is wound into a roll and packed by a winder 21.
A production device of high-strength non-woven fabric comprises two or more groups of raw material boxes 1, a feeding hole 2, a screw extruder 3, an edge material recovery screw extruder 43, a filter 5, a metering pump 6, a spinning box 7, a monomer suction 8, a cold air box 9, a refrigerator 10, an air conditioning box 11, a cooling fan 12, a stretcher 13, a fiber web 14, an air compressor 15, an air draft fan 16, a web former 17, a web forming fabric 18, a hot rolling mill device 19, a cooling device 20, a winding machine 21 and a spinning assembly 22, wherein the upper surface of the screw extruder 3 is communicated with the feeding hole 2, the raw material boxes 1 are communicated with the feeding hole 2 through a pipeline, and the spinning assembly 22 is fixedly installed at the top of the stretcher 13;
wherein the angles of the filter 5, the metering pump 6, the spinning box 7, the monomer suction 8, the cold air box 9, the stretcher 13 and the spinning assembly 22 are 40-45 degrees or minus 40-minus 45 degrees.
The web former 17 transmits the web forming speed data to two or more groups of drawmills 13, the two or more groups of drawmills 13 find corresponding wiredrawing speed and fineness data in the storage thereof according to the web forming speed data, and the two or more groups of drawmills 13 exchange data through the web former 17 to ensure that the speed and the fineness are the same, the drawmills 13 transmit the wiredrawing speed and the fineness data to the spinning assembly 22, the spinning assembly 22 finds corresponding optimal spinning temperature and spinning speed in the storage thereof according to the wiredrawing speed and the fineness data of the drawmills 13, the spinning assembly 22 transmits the optimal spinning temperature data and the actual spinning temperature data to the air conditioning box 11 and the air compressor 15, the air conditioning box 11 and the air compressor 15 find corresponding optimal cooling running speed in the storage thereof according to the optimal spinning temperature data and the actual spinning temperature data, the spinning assembly 22 transmits the spinning speed data to the metering pump 6, the metering pump 6 controls the filtering speed of the filter 5 according to the spinning speed data, the filter 5 controls the extruding speed of the screw extruder 3 and the rim charge recycling screw extruder 4 to be matched with the running speed of the filter, and the screw extruder 3 controls the raw material box 1 and the feed port 2 to be matched with the running speed of the filter;
the web former 17 transmits web forming speed data to a hot rolling mill device 19, the hot rolling mill device 19 adjusts the hot rolling temperature and the hot rolling speed according to the web forming speed data, the hot rolling mill device 19 transmits the hot rolling temperature and the hot rolling speed data to a cooling device 20, the cooling device 20 finds the optimal operation speed of corresponding temperature reduction in storage according to the hot rolling temperature and the hot rolling speed, the hot rolling mill device 19 transmits the hot rolling speed data to a winder 21, and the winder 21 controls the operation speed according to the hot rolling speed
According to the invention, after raw materials are extruded by a screw extruder 3, the raw materials are filtered by a filter 5 and enter a spinning box 7 for spinning, at the moment, a cold air box 9 can continuously cool the spinning box 7, then a stretcher 13 can carry out air flow drafting on the spinning, then the spinning can be sprayed out by spinning components 22, meanwhile, two groups of nozzles are in different angles and different orientations, the angle of the first spinning component 22 is 40-45 degrees, the angle of the second spinning component 22 is minus 40-minus 45 degrees, so that filaments can be crossly lapped, and the tensile strength of the formed non-woven fabric is detected, as shown in table 1, table 1 is the longitudinal and transverse drafting rates of the product, and as shown in table 1, table 1 is the longitudinal and transverse drafting rates of the product
As can be seen from Table 1, the longitudinal and transverse tensile strength ratio of the non-woven fabric is close to 1:1, so that the number of the yarns in unit area can be increased by changing the angle of the spray head through arranging the spinning assembly 22, the density of the yarns is increased, the contact area between the yarns is increased, the condition that the longitudinal and transverse tensile strength is unevenly distributed after the non-woven fabric is formed due to the increase of the number of the spray heads is avoided, the tensile strength of the non-woven fabric is improved, meanwhile, the phenomenon that the thickness of the non-woven fabric is uneven due to the fact that reinforcing ribs are added on the non-woven fabric is prevented, the qualification rate of products is improved, the production cost is reduced, and.
As shown in fig. 3 to 7, the present invention provides a high strength non-woven fabric device, which comprises a hot rolling mill body 191, wherein one end of the hot rolling mill body 191 is provided with a control panel 192, one side of the hot rolling mill body 191 is provided with a bundling device 193, the other side of the hot rolling mill body 191 is provided with a cleaning device 194, the surface of the hot rolling mill body 191 is provided with a receiving device 195, and the surface of the control panel 192 is provided with a protection device 196.
The specific arrangement and function of the beam-receiving device 193, the cleaning device 194, the receiving device 195 and the shielding device 196 will be described in detail below.
As shown in fig. 4 and 7, the bundling device 193 comprises a bottom plate 1931, support plates 1932 are symmetrically and fixedly installed on the surface of the bottom plate 1931, transverse plates 1933 are fixedly installed between the support plates 1932, limiting plates 1934 are symmetrically and slidably connected between the transverse plates 1933, the non-woven fabric after cross lapping can pass through a channel formed by the transverse plates 1933 and the limiting plates 1934, then hot rolling and lapping are carried out by using a hot rolling mill body 191, the lapped non-woven fabric can be bundled before hot rolling, so that a better hot rolling effect is achieved, the strength of the non-woven fabric is improved, a threaded rod 1935 is rotatably connected between the support plates 1932, the threaded rod 1935 is rotatably connected with the support plates 1932 through a bearing, threads are symmetrically arranged on the surface of the threaded rod 1935, a connecting block 1936 is sleeved on the surface of the threaded rod 1935, a threaded hole is formed in the connecting block 1936, the threaded rod 193, one side fixed mounting of backup pad 1932 has a protective housing 1937, protective housing 1937 plays protection action wheel 19310, from the effect of driving wheel 1938 and motor 1939, prevent that the staff from touching the gear and be injured, the one end of threaded rod 1935 runs through backup pad 1932 and extends to inside the protective housing 1937, the one end fixed mounting of threaded rod 1935 has from driving wheel 1938, the inside fixed mounting of protective housing 1937 has motor 1939, motor 1939's output rotation is connected with action wheel 19310, starter motor 1939, make motor 1939 drive action wheel 19310 and rotate, make action wheel 19310 drive from driving wheel 1938 and rotate, threaded rod 1938 drives threaded rod 1935 and rotate in-process can drive connecting block 1936 and remove along threaded rod 1935, thereby drive limiting plate 1934 along diaphragm 1933 inward sliding, thereby change the width of passageway, action wheel 19310 meshes with from driving wheel 1938.
The effect that its whole receipts device 193 reached does, through setting up receipts device 193, before using the hot rolling mill to carry out the hot rolling net-forming to the non-woven fabrics after the cross lapping, can pass the passageway that diaphragm 1933 and limiting plate 1934 formed with the non-woven fabrics after the cross lapping, then use hot rolling mill body 191 to carry out the hot rolling net-forming and handle, make the non-woven fabrics after the lapping can obtain the receipts before the hot rolling, thereby reach better hot rolling effect, and then improve the intensity of non-woven fabrics, when the width of non-woven fabrics has changed to some extent, can start motor 1939, make motor 1939 drive action wheel 19310 and rotate, make action wheel 19310 drive follow driving wheel 1938 and rotate, thereby make follow driving wheel 1938 drive threaded rod 1935 rotate the in-process can drive connecting block 1936 and remove along the threaded rod 1935 mutually, thereby the limiting plate drives limiting plate 1934 and inwards slides along diaphragm 1933, thereby change the width of passageway, make the non-woven fabrics after the alternately lapping can obtain better receipts and restraint the effect, wherein protective housing 1937 plays protection action wheel 19310, follows driving wheel 1938 and motor 1939's effect, prevents that the staff from touching the gear and be injured, through setting up this receipts and restraint device 193, makes the non-woven fabrics after the alternately lapping can obtain before the hot rolling and restraint, has improved the effect of the hot rolling finished cloth of hot rolling mill body 191, has further improved the intensity of non-woven fabrics.
As shown in fig. 5 and 6, the cleaning device 194 includes a side plate 1941, a side plate 1941 is rotatably connected to one side of the hot rolling mill body 191, the side plate 1941 is rotatably connected to the hot rolling mill body 191 through a rotating shaft, an arc block 1942 is fixedly installed to one side of the side plate 1941, bristles are fixedly installed on the inner side of the arc block 1942, a hydraulic telescopic rod 1944 is started to retract the hydraulic telescopic rod 1944, so as to drive the connecting rod 1943 to move, the side plate 1941 rotates, when the hydraulic telescopic rod 1944 is completely retracted, the side plate 1941 fits the hot rolling mill body 191, bristles on the surface of the arc block 1942 fit the rolling wheel of the hot rolling mill body 191, at this time, the hot rolling mill body 191 is started to rotate, bristles on the surface of the arc block 1942 clean the rolling wheel, a connecting rod 1943 is rotatably connected to the outer side of the side plate 1, a hydraulic telescopic rod 1944 is rotatably connected to the outer side of the hot, the hydraulic telescoping rod 1944 is rotatably connected with the bump through a rotating shaft, and one end of the hydraulic telescoping rod 1944 is fixedly connected with the connecting rod 1943.
The whole cleaning device 194 has the advantages that by arranging the cleaning device 194, when the rolling wheel of the hot rolling mill body 191 needs to be cleaned, the hydraulic telescopic rod 1944 is started to retract the hydraulic telescopic rod 1944 so as to drive the connecting rod 1943 to move and enable the side plate 1941 to rotate, when the hydraulic telescopic rod 1944 is completely retracted, the side plate 1941 is attached to the hot rolling mill body 191, the bristles on the surface of the arc-shaped block 1942 are attached to the rolling wheel of the hot rolling mill body 191, the hot rolling mill body 191 is started at the moment so as to enable the bristles on the surface of the arc-shaped block 1942 to clean the rolling wheel, after cleaning is completed, the hydraulic rod is started to extend so as to push the side plate 1941 to rotate, the side plate 1941 is parallel to the ground, the hot rolling mill body 191 can be normally used at the moment, and by arranging the cleaning device, workers can conveniently clean the rolling wheel of the hot rolling mill body 191 quickly, so that the time required by cleaning is saved, and further improves the processing production efficiency of the non-woven fabric.
As shown in fig. 5 and 6, the receiving device 195 includes a receiving box 1951, a receiving box 1951 is fixedly installed on the surface of the hot rolling mill body 191, a notch is opened on the surface of the receiving box 1951, a magnetic strip 1952 is fixedly installed on one side of the receiving box 1951, a rectangular plate 1953 is rotatably connected to the other side of the receiving box 1951, the rectangular plate 1953 is rotatably connected to the receiving box 1951 through a rotating shaft, a bobbin 1954 is fixedly installed on one side of the rectangular plate 1953, when the connecting wire of the hot rolling mill body 191 is too long and needs to be stored, the too long connecting wire is wound on the bobbin 1954, and after the storage of the too long connecting wire is completed, the rectangular plate 1953 is rotated to fit the rectangular plate 1953 with the receiving case 1951, the bobbin 1954 is received in the receiving case 1951, the handle 1955 is fixedly mounted on the other side of the rectangular plate 1953, and the receiving case 1951 is opened by rotating the rectangular plate 1953 by pulling the handle 1955.
The whole storage device 195 has the effects that through the arrangement of the storage device 195, when the connecting wire of the hot rolling mill body 191 is too long and needs to be stored, the rectangular plate 1953 is pulled to rotate by using the handle 1955, the storage box 1951 can be opened, then the overlong connecting wire can be wound on the bobbin 1954, after the overlong connecting wire is stored, the rectangular plate 1953 can be rotated to be attached to the storage box 1951, the bobbin 1954 is stored in the storage box 1951, at the moment, the magnetic strip 1952 attracts the rectangular plate 1953 to prevent the rectangular plate 1953 from rotating randomly, the bobbin 1954 can be limited in the storage box 1951 together with the connecting wire, the connecting wire is protected, wherein the gap of the storage box 1951 plays a role of facilitating the passing of the connecting wire, and through the arrangement of the storage device 195, workers can conveniently store the connecting wire of the hot rolling mill body 191, the connecting wire is protected, and the practicability of the device is greatly improved.
As shown in fig. 4 and 6, the protection device 196 includes a protection shell 1961, the surface of the control panel 192 is rotatably connected with the protection shell 1961, a rim 1962 is fixedly installed on the inner side of the protection shell 1961, the protection shell 1961 can be rotated to make the protection shell 1961 fit the control panel 192, the rim 1962 is clamped on the outer side of the control panel 192, so that the position of the protection shell 1961 is fixed, the protection shell 1961 is prevented from easily rotating, the control panel 192 can be protected, a worker can be prevented from accidentally touching the control panel 192 during working to affect the normal operation of the hot rolling mill body 191, the outer side of the protection shell 1961 is rotatably connected with a pull ring 1963, the protection shell 1961 can be rotated by pulling the pull ring 1963, the control panel 192 can be used again, a backing strip 1964 is fixedly installed on the surface of the control panel 192, the backing strip 1964 plays a role of separating the protection shell 1961 from the control panel 192, and prevents the protection shell 1961 from pressing a button, affecting normal use of the control panel 192.
The whole protection device 196 achieves the effects that by arranging the protection device 196, after the parameters of the control panel 192 are set, the protection shell 1961 can be rotated to enable the protection shell 1961 to be attached to the control panel 192, at the moment, the frame 1962 can be clamped outside the control panel 192, the position of the protection shell 1961 is fixed, the protection shell 1961 is prevented from easily rotating, the control panel 192 can be protected, a worker can be prevented from accidentally touching the control panel 192 in the working process to influence the normal operation of the hot rolling mill body 191, the cushion strip 1964 plays a role in separating the protection shell 1961 from the control panel 192, the protection shell 1961 is prevented from pressing a button on the surface of the control panel 192 to influence the normal use of the control panel 192, when the control panel 192 needs to be used again, the protection shell 1961 can be driven to rotate by pulling the pull ring 1963, the control panel 192 can be used again, and by arranging the protection device 196, make things convenient for the staff to protect control panel 192, prevent that control panel 192 from receiving the mistake and touching, improved the stability of hot rolling mill body 191 operation.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes by using the technical contents disclosed in the above description to other fields, but any simple modification, equivalent change and change made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. A production method of high-strength non-woven fabric is characterized by comprising the following steps: includes the following steps S1-S5:
s1: preparing raw materials, slicing the raw materials, and storing the sliced raw materials in a raw material box (1);
s2: feeding the raw materials in the raw material box (1) into a screw extruder (3) through a gas flow conveying device, wherein the screw extruder (3) melts and feeds the raw materials into a filter (5);
s3: the raw material filtered by the filter (5) is sent into a spinning box (7), and is ejected out from a spinning assembly (22) at an angle of 40-45 degrees or minus 40-minus 45 degrees through air flow drafting, and cross lapping is carried out;
s4: hot rolling the web by a hot rolling mill (19);
s5: the formed non-woven fabric is wound into a roll and packed by a winding machine (21).
2. A method for producing a high-strength nonwoven fabric according to claim 1, characterized in that: the raw material in the step S1 is polypropylene, and the step S4 further includes: the method for compressing and flattening the hot-rolled web-formed non-woven fabric is conveyed to a cooling device (20) for cooling, and the step S3 further comprises the following steps: the cold air box (9) is used for cooling the spinning box (7).
3. The apparatus for producing a high-strength nonwoven fabric according to claim 1, wherein: the device comprises two or more groups of raw material boxes (1), a feeding hole (2), a screw extruder (3), an edge material recovery screw extruder (4), a filter (5), a metering pump (6), a spinning box (7), a monomer suction (8), a cold air box (9), a refrigerator (10), an air conditioning box (11), a cooling fan (12), a stretcher (13), a fiber web (14), an air compressor (15), an air draft fan (16), a web former (17), a web forming fabric (18), a hot rolling machine device (19), a cooling device (20), a winding machine (21) and a spinning assembly (22);
wherein the angles of the filter (5), the metering pump (6), the spinning box (7), the monomer suction (8), the cold air box (9), the stretcher (13) and the spinning assembly (22) are 40-45 degrees or minus 40-minus 45 degrees.
4. The apparatus for producing a high-strength nonwoven fabric according to claim 3, wherein: the web forming machine (17) transmits web forming speed data to two or more groups of stretching machines (13), the two or more groups of stretching machines (13) find corresponding wiredrawing speed and fineness data in the storage thereof according to the web forming speed data, the two or more groups of stretching machines (13) exchange data through the web forming machine (17) to ensure that the speed and the fineness are the same, the stretching machines (13) transmit the wiredrawing speed and the fineness data to the spinning assembly (22), the spinning assembly (22) finds corresponding optimal spinning temperature and optimal spinning speed in the storage thereof according to the wiredrawing speed and the fineness data of the stretching machines (13), the spinning assembly (22) transmits optimal spinning temperature data and actual spinning temperature data to the air conditioning box (11) and the air compressor (15), the air conditioning box (11) and the air compressor (15) find corresponding optimal operation speed for cooling in the storage thereof according to the optimal spinning temperature data and the actual spinning temperature data, the spinning assembly (22) transmits spinning speed data to the metering pump (6), the metering pump (6) controls the filtering speed of the filter (5) according to the spinning speed data, the filter (5) controls the extruding speed of the screw extruder (3) and the rim charge recycling screw extruder (4) to be matched with the running speed of the screw extruder, and the screw extruder (3) is controlled to control the raw material box (1) and the feed inlet (2) to be matched with the running speed of the screw extruder;
the net forming machine (17) transmits net forming speed data to a hot rolling machine device (19), the hot rolling machine device (19) adjusts the hot rolling temperature and the hot rolling speed of the hot rolling machine device according to the net speed data, the hot rolling machine device (19) transmits the hot rolling temperature and the hot rolling speed data to a cooling device (20), the cooling device (20) finds the optimal operation speed of corresponding temperature reduction in storage according to the hot rolling temperature and the hot rolling speed, the hot rolling machine device (19) transmits the hot rolling speed data to a winding machine (21), and the winding machine (21) controls the operation speed of the winding machine device according to the hot rolling speed.
5. The apparatus for producing a high-strength nonwoven fabric according to claim 3, wherein: the upper surface of the screw extruder (3) is communicated with a feed inlet (2), the raw material box (1) is communicated with the feed inlet (2) through a pipeline, and the top of the stretcher (13) is fixedly provided with a spinning component (22).
6. The apparatus for producing a high-strength nonwoven fabric according to claim 3, wherein: the hot rolling mill device (19) comprises a hot rolling mill body (191), a control panel (192) is arranged at one end of the hot rolling mill body (191), a bundling device (193) is arranged on one side of the hot rolling mill body (191), a cleaning device (194) is arranged on the other side of the hot rolling mill body (191), a storage device (195) is arranged on the surface of the hot rolling mill body (191), and a protection device (196) is arranged on the surface of the control panel (192).
7. The apparatus for producing a high-strength nonwoven fabric according to claim 6, wherein: the beam-closing device (193) comprises a bottom plate (1931), the surface symmetry fixed mounting of bottom plate (1931) has backup pad (1932), fixed mounting has diaphragm (1933) between backup pad (1932), symmetry sliding connection has limiting plate (1934) between diaphragm (1933), it is connected with threaded rod (1935) to rotate between backup pad (1932), the surface cover of threaded rod (1935) is equipped with connecting block (1936), connecting block (1936) and limiting plate (1934) fixed connection, one side fixed mounting of backup pad (1932) has protective housing (1937), the one end of threaded rod (1935) is run through backup pad (1932) and is extended to inside protective housing (1937), the one end fixed mounting of threaded rod (1935) has from driving wheel (1938), the inside fixed mounting of protective housing (1937) has motor (1939), the output of motor (1939) rotates and is connected with action wheel (19310), the driving wheel (19310) is meshed with the driven wheel (1938);
cleaning device (194) includes curb plate (1941), one side of hot rolling mill body (191) is rotated and is connected with curb plate (1941), one side fixed mounting of curb plate (1941) has arc piece (1942), the outside of curb plate (1941) is rotated and is connected with connecting rod (1943), the outside of hot rolling mill body (191) is rotated and is connected with hydraulic telescoping rod (1944), the one end and the connecting rod (1943) fixed connection of hydraulic telescoping rod (1944).
8. The apparatus for producing a high-strength nonwoven fabric according to claim 6, wherein: the accommodating device (195) comprises an accommodating box (1951), the accommodating box (1951) is fixedly installed on the surface of the hot rolling mill body (191), a magnetic strip (1952) is fixedly installed on one side of the accommodating box (1951), a rectangular plate (1953) is rotatably connected to the other side of the accommodating box (1951), a bobbin (1954) is fixedly installed on one side of the rectangular plate (1953), and a handle (1955) is fixedly installed on the other side of the rectangular plate (1953);
the protection device (196) comprises a protection shell (1961), the surface of the control panel (192) is rotatably connected with the protection shell (1961), the inner side of the protection shell (1961) is fixedly provided with a frame (1962), the outer side of the protection shell (1961) is rotatably connected with a pull ring (1963), and the surface of the control panel (192) is fixedly provided with a pad strip (1964).
9. The apparatus for producing a high-strength nonwoven fabric according to claim 7, wherein: the threaded rod (1935) is rotationally connected with the supporting plate (1932) through a bearing, threads are symmetrically formed in the surface of the threaded rod (1935), a threaded hole is formed in the connecting block (1936), and the threaded rod (1935) is meshed with the threaded hole; curb plate (1941) rotate with hot rolling mill body (191) through the pivot and are connected, the inboard fixed mounting of arc piece (1942) has the brush hair, hot rolling mill body (191) outside fixed mounting has the lug, hydraulic telescoping rod (1944) rotate with the lug through the pivot and are connected.
10. The apparatus for producing a high-strength nonwoven fabric according to claim 8, wherein: the surface of receiver (1951) is seted up jaggedly, rectangular plate (1953) are connected with receiver (1951) rotation through the pivot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011178765.6A CN112501785A (en) | 2020-10-29 | 2020-10-29 | Production method and production equipment of high-strength non-woven fabric |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011178765.6A CN112501785A (en) | 2020-10-29 | 2020-10-29 | Production method and production equipment of high-strength non-woven fabric |
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| CN112501785A true CN112501785A (en) | 2021-03-16 |
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| CN202011178765.6A Pending CN112501785A (en) | 2020-10-29 | 2020-10-29 | Production method and production equipment of high-strength non-woven fabric |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529282A (en) * | 2021-07-26 | 2021-10-22 | 大连塑研塑料科技开发有限公司 | Method and device for cross gridding reciprocating motion of three-dimensional silk pad handpiece template |
-
2020
- 2020-10-29 CN CN202011178765.6A patent/CN112501785A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529282A (en) * | 2021-07-26 | 2021-10-22 | 大连塑研塑料科技开发有限公司 | Method and device for cross gridding reciprocating motion of three-dimensional silk pad handpiece template |
| CN113529282B (en) * | 2021-07-26 | 2023-02-03 | 大连塑研塑料科技开发有限公司 | Method and device for cross gridding reciprocating motion of three-dimensional silk pad handpiece template |
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