CN113752601B - Preparation method and preparation device for manufacturing polyurethane foam wound dressing - Google Patents
Preparation method and preparation device for manufacturing polyurethane foam wound dressing Download PDFInfo
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- CN113752601B CN113752601B CN202111037358.8A CN202111037358A CN113752601B CN 113752601 B CN113752601 B CN 113752601B CN 202111037358 A CN202111037358 A CN 202111037358A CN 113752601 B CN113752601 B CN 113752601B
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- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 85
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims description 28
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 239000000123 paper Substances 0.000 claims description 14
- 238000013016 damping Methods 0.000 claims description 13
- 238000000265 homogenisation Methods 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 12
- 239000004745 nonwoven fabric Substances 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 5
- 239000011086 glassine Substances 0.000 claims description 4
- 238000004659 sterilization and disinfection Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 abstract description 3
- 206010052428 Wound Diseases 0.000 description 14
- 208000027418 Wounds and injury Diseases 0.000 description 14
- 239000000758 substrate Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 8
- 235000017491 Bambusa tulda Nutrition 0.000 description 8
- 241001330002 Bambuseae Species 0.000 description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 8
- 239000011425 bamboo Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010030 laminating Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/425—Porous materials, e.g. foams or sponges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Mechanical Engineering (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Forests & Forestry (AREA)
- Dispersion Chemistry (AREA)
- Making Paper Articles (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention discloses a preparation method and a preparation device for manufacturing polyurethane foam wound dressing, and relates to the technical field of polyurethane foam dressing. The preparation method of the polyurethane foam wound dressing comprises three steps of mixing, cutting and pressing. The preparation device for manufacturing the polyurethane foam wound dressing comprises a base, wherein a sleeve winding mechanism, a feeding mechanism, a material injecting mechanism, a pressing mechanism, a material feeding box and a material storage cylinder are arranged on the base. The preparation method of the polyurethane foam wound dressing adopts a split structural design, is integrally formed in a bonding and pressing mode during manufacturing, is simple in steps and convenient to operate, and can be correspondingly adjusted according to the production requirements. The preparation device of the polyurethane foam wound dressing can perform batch operation, shortens the processing time, performs machine automation operation, reduces the input of manpower and lightens the labor burden of operators.
Description
Technical Field
The invention relates to the field of polyurethane foam dressing, in particular to a preparation method and a preparation device for manufacturing polyurethane foam wound dressing.
Background
The polyurethane foam wound dressing can promote wound healing, is popular in the market in recent years, and partial polyurethane foam wound dressing on the market is too complicated in terms of preparation method, for example, the patent with publication number of CN111748071A is complicated in steps, complex in operation and long in time consumption, and the curing steps are difficult to prepare in a large scale simultaneously, so that the preparation cost is high, the efficiency is reduced along with the reduction, the practicability is poor, most of devices can only process a small amount of dressing at a time in terms of preparation devices, the production efficiency is low, the practical benefit is influenced, the flexibility is poor, the sizes, the shapes and other specifications of the dressing are difficult to adjust, and popularization and use are not facilitated.
Disclosure of Invention
(One) solving the technical problems
The invention aims to provide a preparation method and a preparation device for manufacturing polyurethane foam wound dressing, which solve the problems in the background art.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: a method of making a polyurethane foam wound dressing comprising the steps of:
firstly, putting raw materials of a polyurethane foam dressing into a reaction kettle together for preheating to 48-60 ℃, obtaining a mixed material, putting the mixed material into a homogenizer for three-section homogenization, putting deionized water with the same amount for two times therebetween, and cooling and sterilizing after homogenization to obtain a dressing matrix;
Step two, using non-setting adhesive non-woven fabrics as dressing base materials, spreading the base materials, selecting pure cotton cloth blocks to press into hollow check rings, arranging a plurality of groups of check rings on the adhesive surface of the base materials in an array manner, and quantitatively extruding the dressing base materials obtained in the step one into the check rings in sequence;
And thirdly, coating an anti-sticking layer with the same size as the base material on the adhesive surface of the base material, pressing the anti-sticking layer and the base material to obtain a dressing monolith, cutting the dressing monolith into components with the specified size and shape by using a cutting machine, and performing a series of operations such as sterilization, disinfection, packaging and the like on the dressing monolith to obtain the polyurethane foam wound dressing.
Preferably, in the first step, the homogenization pressure of the first section of the homogenizer is 3.6-3.8MPa, the homogenization pressure of the second section is 0.8-1.0MPa, the homogenization pressure of the third section is 0.2-0.3MPa, and the dosage of deionized water added between the three sections is one tenth of the dosage of the raw material.
Preferably, the shape of the retainer ring in the second step may be any one of a circle and a square.
Preferably, the anti-sticking layer in the third step is glassine release paper, the dressing adopts a split structural design, and is integrally formed in a bonding and pressing mode during manufacturing, so that compared with a traditional dressing adopting a method, the method has the advantages of more simplified steps and convenience in operation.
The preparation facilities of manufacturing polyurethane foam wound dressing, including the base, be provided with cover on the base and roll up mechanism, feeding mechanism, annotate material mechanism, pressing mechanism, send workbin and storage section of thick bamboo, send the bottom of workbin and storage section of thick bamboo to be fixed mounting respectively has four sets of landing legs and four sets of branches, the bottom of landing leg and branch all with the top fixed connection of base, the top opening part screw thread of storage section of thick bamboo installs the cover, the top fixed mounting of cover has the handle, fixed mounting has the fixed station on the outer wall of storage section of thick bamboo.
Preferably, the cover is rolled up mechanism and is included support, separation blade, fender lid, damping telescopic link and rubber flitch, and the top of base and the equal fixed mounting in bottom of fixed station have a set of support and a set of damping telescopic link, and the front side of support rotates installs the loop bar, and the cover is equipped with the separation blade on the loop bar, and the front end screw thread of loop bar is installed and is kept off the lid, and the free end fixed mounting of damping telescopic link has the rubber flitch, carries out tensioning to the substrate, avoids it to appear the fold condition and influences dressing finished product quality in the course of working, is convenient for install and dismantle substrate and from type paper roll simultaneously.
Preferably, the feeding mechanism comprises a screw rod, support plates, fixed blocks, a partition plate, a push plate, a support and a first motor, wherein the screw rod is arranged above the feeding box, two groups of support plates are fixedly arranged at the top opening of the feeding box, the screw rod is rotatably arranged between the two groups of support plates, the fixed blocks are arranged on the screw rod in a threaded manner, the push plate is fixedly arranged at the bottom of the fixed blocks, nineteen groups of partition plates are fixedly arranged on the inner walls of the two sides of the feeding box, eighteen groups of blanking openings are arranged at the bottom of the feeding box, the blanking openings are arranged between the partition plates, the push plate is arranged on the inner side of each group of partition plates, the support is fixedly arranged on the outer wall of one side of the feeding box, the first motor is fixedly arranged at the top of the support, the output shaft of the first motor is fixedly connected with one end of the screw rod through a coupler, the check ring is stuck on a base material in batches, the processing time is shortened, the machine automation operation is reduced, and the labor burden of operators is lightened.
Preferably, the material injection mechanism comprises a material suction pump, a material suction pipe, a material conveying pipe, a manual valve, an electromagnetic valve, a material feeding pipe and a material injection head, wherein the material suction pump is fixedly arranged at the bottom of the material storage pipe, the material suction pipe is fixedly arranged at the input end of the material suction pump, one end of the material suction pipe is fixedly connected with the bottom of the material storage pipe, the material storage pipe is communicated with the inside of the material suction pipe, the material conveying pipe is fixedly arranged at the output end of the material suction pump, the manual valve and the electromagnetic valve are arranged on the material conveying pipe, the material conveying pipe is fixedly connected with the material feeding pipe, the material conveying pipe is communicated with the inside of the material feeding pipe, eighteen groups of open holes are formed in the bottom of the material feeding pipe, and the material injection head is fixedly arranged in the open holes.
Preferably, the pressing mechanism comprises a mounting frame, rubber pressing rollers, a second motor, belt pulleys, belts and gears, two groups of mounting frames and a group of second motors are fixedly mounted at the top of the base, two groups of rubber pressing rollers are rotatably mounted between the two groups of mounting frames, one end of one group of rubber pressing rollers extends to the front of the mounting frame and is fixedly provided with one group of belt pulleys, an output shaft of the second motor is fixedly provided with one group of belt pulleys through a shaft coupling, the two groups of belt pulleys are sleeved with belts, the two groups of belt pulleys are connected through belt transmission, the other ends of the two groups of rubber pressing rollers extend to the rear of the mounting frame and are fixedly provided with one group of gears, and the two groups of gears are meshed.
(III) beneficial effects
Compared with the prior art, the invention provides the preparation method and the preparation device for manufacturing the polyurethane foam wound dressing, which have the following beneficial effects:
1. According to the preparation method of the polyurethane foam wound dressing, the dressing is integrally formed in a split type structural design in a pasting and pressing mode during manufacturing, compared with a traditional dressing method, the preparation method is simpler in steps, convenient to operate, capable of correspondingly adjusting the shape and the specification of the dressing according to production requirements, high in flexibility and wide in application range, meets various requirements of different manufacturers on products, simultaneously reduces damage to active ingredients in various raw materials by adopting a low-temperature means during processing of the raw materials in the dressing, and meanwhile utilizes a three-section homogenizing method to pressurize, mix and stir the raw materials, so that the components are guaranteed to be evenly mixed, the risk of reducing dressing effects due to uneven mixing is avoided, the quality of the dressing is guaranteed, and the dressing is suitable for mass production.
2. This preparation facilities of polyurethane foam wound dressing uses through the cooperation of screw rod, the baffle, push pedal and first motor, can paste the retaining ring on the substrate in batches, the processing time consuming has been shortened, machine automation operation has reduced the input of manpower, operating personnel's work burden has been alleviateed, simultaneously can also adjust retaining ring quantity and interval, satisfy different production requirements, through the suction pump, the conveying pipe, manual valve, solenoid valve and annotate the cooperation use of stub bar, can carry out the material loading simultaneously and handle, further the production machining efficiency of this dressing has been promoted, can also adjust extrusion volume and extrusion time interval, the flexibility is high, through the separation blade, the shielding lid, damping telescopic link, rubber pressfitting roller and the cooperation use of second motor, can carry out tensioning treatment to the substrate, avoid its fold condition to appear in the course of working and influence dressing finished product quality, be convenient for simultaneously install and dismantle the substrate and from the type paper roll, can carry out dressing production processing operation continuously, the sales volume of the device has been promoted indirectly.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of the portion A of the present invention;
FIG. 3 is a top view of the feeder box of the present invention;
FIG. 4 is an enlarged view of section B of the present invention;
FIG. 5 is an enlarged view of section C of the present invention;
Fig. 6 is a top view of the laminating roller of the present invention.
In the figure: base 1, set up mechanism 2, support 201, separation blade 202, fender lid 203, damping telescopic link 204, rubber flitch 205, feeding mechanism 3, screw 301, extension board 302, fixed block 303, baffle 304, push pedal 305, support 306, first motor 307, injection mechanism 4, suction pump 401, suction pipe 402, feed pipe 403, manual valve 404, solenoid valve 405, feed cylinder 406, injection head 407, press mechanism 5, mounting bracket 501, rubber press roller 502, second motor 503, belt pulley 504, belt 505, gear 506, feed box 6, support leg 7, storage cylinder 8, cylinder lid 9, support rod 10, fixed table 11.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: a method of making a polyurethane foam wound dressing comprising the steps of:
firstly, putting raw materials of a polyurethane foam dressing into a reaction kettle together for preheating, obtaining a mixed material after preheating to 48-60 ℃, putting the mixed material into a homogenizer for three-section homogenization, wherein the homogenization pressure of the first section of the homogenizer is 3.6-3.8MPa, the homogenization pressure of the second section of the homogenizer is 0.8-1.0MPa, the homogenization pressure of the third section of the homogenizer is 0.2-0.3MPa, the dosage of deionized water added during the three sections of homogenization is one tenth of the dosage of the raw materials, putting equal deionized water for two times during the homogenization, and cooling and sterilizing to obtain a dressing matrix;
Step two, using non-setting adhesive non-woven fabric as a dressing substrate, spreading the substrate, selecting pure cotton cloth to press into hollow check rings, wherein the check rings can be any one of round or square, arranging a plurality of groups of check rings in an array on the adhesive surface of the substrate, and quantitatively extruding the dressing substrate obtained in the step one into the check rings in sequence;
Step three, the anti-sticking layer with the same size as the base material is covered on the adhesive surface of the base material, the anti-sticking layer is glassine release paper, the anti-sticking layer and the glassine release paper are pressed, the dressing monolith is obtained after pressing, the dressing monolith is cut into components with the specified size and shape by using a cutting machine, the components are sterilized, disinfected, packaged and the like, the polyurethane foam wound dressing is obtained, the dressing adopts a split type structural design, the dressing is integrally formed in a pasting and pressing mode during manufacturing, compared with the method adopted by the traditional dressing, the steps are more simplified, the operation is convenient, the shape and the specification of the dressing can be correspondingly adjusted according to production requirements, various requirements of different manufacturers on products are met, the flexibility is high, the application range is wide, meanwhile, the damage to the effective components in various raw materials is reduced by adopting a low-temperature means during processing the raw materials in the dressing, meanwhile, the raw materials are uniformly mixed under pressure by using a three-section homogenizing method, the risks that the effect of the dressing is reduced due to the mixing of the components are avoided, and the quality of the dressing is ensured.
The preparation facilities of manufacturing polyurethane foam wound dressing, including base 1, be provided with on the base 1 and overlap book mechanism 2, feeding mechanism 3, annotate material mechanism 4, pressing mechanism 5, feeder box 6 and storage section of thick bamboo 8, the bottom of feeder box 6 and storage section of thick bamboo 8 is fixed mounting respectively has four sets of landing legs 7 and four sets of branches 10, the bottom of landing leg 7 and branch 10 all with the top fixed connection of base 1, the top opening part screw thread of storage section of thick bamboo 8 is installed cover 9, the top fixed mounting of cover 9 has the handle, fixed mounting has fixed station 11 on the outer wall of storage section of thick bamboo 8.
The sleeve winding mechanism 2 comprises a support 201, a baffle 202, a baffle cover 203, a damping telescopic rod 204 and a rubber flitch 205, wherein a group of support 201 and a group of damping telescopic rods 204 are fixedly arranged at the top of the base 1 and the bottom of the fixed table 11, a sleeve rod is rotatably arranged on the front side of the support 201, the baffle 202 is sleeved on the sleeve rod, the baffle cover 203 is arranged at the front end thread of the sleeve rod, and the rubber flitch 205 is fixedly arranged at the free end of the damping telescopic rod 204.
The feeding mechanism 3 comprises a screw 301, support plates 302, a fixed block 303, partition plates 304, a push plate 305, a support 306 and a first motor 307, wherein the screw 301 is arranged above the feeding box 6, two groups of support plates 302 are fixedly arranged at the top opening of the feeding box 6, the screw 301 is rotatably arranged between the two groups of support plates 302, the screw 301 is provided with the fixed block 303 in a threaded manner, the push plate 305 is fixedly arranged at the bottom of the fixed block 303, nineteen groups of partition plates 304 are fixedly arranged on the inner walls of the two sides of the feeding box 6, eighteen groups of blanking openings are formed in the bottom of the feeding box 6, the blanking openings are arranged between the partition plates 304 of each group, the push plate 305 is arranged on the inner side of the partition plates 304 of each group, the support 306 is fixedly arranged on the outer wall of one side of the feeding box 6, the first motor 307 is fixedly arranged at the top of the support 306, and the output shaft of the first motor 307 is fixedly connected with one end of the screw 301 through a coupling.
The material injection mechanism 4 comprises a material suction pump 401, a material suction pipe 402, a material delivery pipe 403, a manual valve 404, an electromagnetic valve 405, a material feeding cylinder 406 and a material injection head 407, wherein the material suction pump 401 is fixedly arranged at the bottom of the material storage cylinder 8, the material suction pipe 402 is fixedly arranged at the input end of the material suction pump 401, one end of the material suction pipe 402 is fixedly connected with the bottom of the material storage cylinder 8, the material storage cylinder 8 is communicated with the interior of the material suction pipe 402, the material delivery pipe 403 is fixedly arranged at the output end of the material suction pump 401, the manual valve 404 and the electromagnetic valve 405 are arranged on the material delivery pipe 403, the material feeding cylinder 406 is fixedly connected with one end of the material feeding pipe 403, the material feeding pipe 403 is communicated with the interior of the material feeding cylinder 406, eighteen groups of holes are formed in the bottom of the material feeding cylinder 406, the material injection head 407 is fixedly arranged in the holes, the pressing mechanism 5 comprises a mounting frame 501, a rubber pressing roller 502, a second motor 503, a belt 504 and a gear 506, the top of the base 1 is fixedly provided with two groups of mounting frames 501 and a group of second motors 503, two groups of rubber laminating rollers 502 are rotatably arranged between the two groups of mounting frames 501, one end of one group of rubber laminating rollers 502 extends to the front of the mounting frame 501 and is fixedly provided with a group of belt pulleys 504, the output shaft of the second motor 503 is fixedly provided with a group of belt pulleys 504 through a coupler, the two groups of belt pulleys 504 are sleeved with a belt 505, the two groups of belt pulleys 504 are in transmission connection through the belt 505, the other ends of the two groups of rubber laminating rollers 502 extend to the rear of the mounting frame 501 and are fixedly provided with a group of gears 506, the two groups of gears 506 are meshed, the check rings can be pasted on a base material in batches, the processing time consumption is shortened, the machine automation operation is reduced, the labor burden of operators is reduced, the number and interval of the check rings can be adjusted simultaneously, the different production requirements are met, through the cooperation of inhaling material pump 401, conveying pipe 403, manual valve 404, solenoid valve 405 and annotate stub bar 407 and use, can carry out the material loading simultaneously and handle the multiunit substrate, further promoted the production machining efficiency of this dressing, can also adjust extrusion volume and extrusion time interval, the flexibility is high, through the cooperation of separation blade 202, keep off the lid 203, damping telescopic link 204, rubber pressfitting roller 502 and second motor 503 use, can carry out tensioning to the substrate and handle, avoid it to appear the fold condition and influence dressing finished product quality in the course of working, be convenient for simultaneously install and dismantle substrate and from the type paper roll, can carry out dressing production and processing operation continuously, and then improve holistic economic benefits.
Working principle: unscrewing two groups of baffle covers 203, taking down baffle plates 202 from sleeve bars, inserting non-adhesive non-woven fabric rollers and release paper rollers into the two groups of sleeve bars respectively, sleeving back the baffle plates 202, screwing down the baffle covers 203, clamping the baffle covers 203 on the rollers, lifting the free ends of damping telescopic rods 204, attaching rubber flitch 205 to the rollers, sequentially arranging prefabricated check rings in a feeding box 6, opening a cylinder cover 9, pouring prefabricated dressing into a storage cylinder 8, covering the cylinder cover 9, pulling the non-adhesive non-woven fabric on the non-adhesive non-woven fabric rollers, penetrating the non-adhesive non-woven fabric rollers between the two groups of rubber press-fit rollers 502 sequentially through the bottoms of the feeding box 6 and the storage cylinder 8, pulling release paper on the release paper rollers, penetrating the release paper between the two groups of rubber press-fit rollers 502, clamping the release paper and the non-adhesive non-woven fabric by the rubber press-fit rollers 502, the second motor 503 is controlled to start to drive the two groups of rubber laminating rollers 502 to reversely rotate, the release paper and the non-adhesive non-woven fabric are pulled to the outer side of the device, the first motor 307 is controlled to start to drive the screw 301 to rotate, the push plate 305 moves transversely under the blocking of the partition plate 304 and the driving action of the screw 301 and pushes out the retainer ring arranged in the retainer ring from the blanking opening, the retainer ring falls on the non-adhesive non-woven fabric to finish fixing, when the retainer ring moves to the lower part of the injection head 407, the suction pump 401 is controlled to start, dressing in the storage cylinder 8 is discharged from the injection head 407 through the feed pipe 403, the dressing is extruded into the retainer ring, the feeding is finished, the retainer ring on the base material continues to move, the release paper is coated on the base material, and the dressing monolith is obtained after the lamination through the two groups of rubber laminating rollers 502.
Claims (5)
1. The preparation device for manufacturing polyurethane foam wound dressing is characterized in that: the automatic feeding device comprises a base (1), wherein a sleeve winding mechanism (2), a feeding mechanism (3), a material injecting mechanism (4), a pressing mechanism (5), a feeding box (6) and a material storage barrel (8) are arranged on the base (1), four groups of supporting legs (7) and four groups of supporting rods (10) are respectively and fixedly arranged at the bottoms of the feeding box (6) and the material storage barrel (8), the bottoms of the supporting legs (7) and the supporting rods (10) are fixedly connected with the top of the base (1), a barrel cover (9) is arranged at the thread at the top opening of the material storage barrel (8), a handle is fixedly arranged at the top of the barrel cover (9), and a fixing table (11) is fixedly arranged on the outer wall of the material storage barrel (8);
The pressing mechanism (5) comprises a mounting frame (501), rubber pressing rollers (502), a second motor (503), belt pulleys (504), belts (505) and gears (506), wherein two groups of mounting frames (501) and one group of second motors (503) are fixedly arranged at the top of the base (1), two groups of rubber pressing rollers (502) are rotatably arranged between the two groups of mounting frames (501), one end of one group of rubber pressing rollers (502) extends to the front of the mounting frame (501) and is fixedly provided with one group of belt pulleys (504), the output shaft of the second motor (503) is fixedly provided with one group of belt pulleys (504) through a coupler, the two groups of belt pulleys (504) are sleeved with belts (505), the two groups of belt pulleys (504) are in transmission connection through the belts (505), the other ends of the two groups of rubber pressing rollers (502) extend to the rear of the mounting frame (501) and are fixedly provided with one group of gears (506), and the two groups of gears (506) are meshed with each other.
The winding mechanism (2) comprises a support (201), a baffle (202), a baffle cover (203), a damping telescopic rod (204) and a rubber flitch (205), wherein a group of supports (201) and a group of damping telescopic rods (204) are fixedly arranged at the top of the base (1) and the bottom of the fixed table (11), the front side of the support (201) is rotatably provided with a sleeve rod, the sleeve rod is sleeved with the baffle (202), the baffle cover (203) is arranged at the front end thread of the sleeve rod, and the rubber flitch (205) is fixedly arranged at the free end of the damping telescopic rod (204);
The feeding mechanism (3) comprises a screw rod (301), support plates (302), fixing blocks (303), partition plates (304), a push plate (305), a support (306) and a first motor (307), wherein the screw rod (301) is arranged above the feeding box (6), two groups of support plates (302) are fixedly arranged at the top opening of the feeding box (6), the screw rod (301) is rotatably arranged between the two groups of support plates (302), the fixing blocks (303) are arranged on the screw rod (301) in a threaded manner, the push plate (305) is fixedly arranged at the bottom of the fixing blocks (303), nineteen groups of partition plates (304) are fixedly arranged on the inner walls of two sides of the feeding box (6), eighteen groups of blanking openings are formed in the bottom of the feeding box (6), the blanking openings are arranged between the partition plates (304), the push plate (305) is arranged on the inner side of each group of partition plates (304), the support (306) is fixedly arranged on the outer wall of one side of the feeding box (6), the top of the support (306) is fixedly arranged on the first motor (307), and the output shaft of the first motor (307) is fixedly connected with one end of the screw rod (301) through a coupling;
The feeding mechanism (4) comprises a suction pump (401), a suction pipe (402), a feeding pipe (403), a manual valve (404), an electromagnetic valve (405), a feeding pipe (406) and a feeding head (407), wherein the suction pump (401) is fixedly arranged at the bottom of the feeding pipe (8), the suction pipe (402) is fixedly arranged at the input end of the suction pump (401), one end of the suction pipe (402) is fixedly connected with the bottom of the feeding pipe (8), the feeding pipe (403) is fixedly arranged at the output end of the suction pump (401), the feeding pipe (403) is fixedly connected with the manual valve (404) and the electromagnetic valve (405), the feeding pipe (403) is fixedly connected with the feeding pipe (406), the feeding pipe (403) is communicated with the inside of the feeding pipe (406), an eighteen-group opening is formed in the bottom of the feeding pipe (406), and the feeding head (407) is fixedly arranged in the opening.
2. A method of making a polyurethane foam wound dressing using the apparatus of claim 1, comprising the steps of:
firstly, putting raw materials of a polyurethane foam dressing into a reaction kettle together for preheating to 48-60 ℃, obtaining a mixed material, putting the mixed material into a homogenizer for three-section homogenization, putting deionized water with the same amount for two times therebetween, and cooling and sterilizing after homogenization to obtain a dressing matrix;
Step two, using non-setting adhesive non-woven fabrics as dressing base materials, spreading the base materials, selecting pure cotton cloth blocks to press into hollow check rings, arranging a plurality of groups of check rings on the adhesive surface of the base materials in an array manner, and quantitatively extruding the dressing base materials obtained in the step one into the check rings in sequence;
And thirdly, coating an anti-sticking layer with the same size as the base material on the adhesive surface of the base material, pressing the anti-sticking layer and the base material to obtain a dressing monolith, cutting the dressing monolith into components with the specified size and shape by using a cutting machine, and performing a series of operations such as sterilization, disinfection, packaging and the like on the dressing monolith to obtain the polyurethane foam wound dressing.
3. The method of making a polyurethane foam wound dressing of claim 2, wherein: in the first step, the homogenizing pressure of the first section of the homogenizing machine is 3.6-3.8MPa, the homogenizing pressure of the second section is 0.8-1.0MPa, the homogenizing pressure of the third section is 0.2-0.3MPa, and the dosage of deionized water added between the three sections of homogenizing is one tenth of the dosage of the raw material.
4. The method of making a polyurethane foam wound dressing of claim 2, wherein: the shape of the retainer ring in the second step can be any one of round or square.
5. The method of making a polyurethane foam wound dressing of claim 2, wherein: and in the third step, the anti-sticking layer is glassine release paper.
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| CN202111037358.8A CN113752601B (en) | 2021-09-06 | 2021-09-06 | Preparation method and preparation device for manufacturing polyurethane foam wound dressing |
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| CN202111037358.8A CN113752601B (en) | 2021-09-06 | 2021-09-06 | Preparation method and preparation device for manufacturing polyurethane foam wound dressing |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225665A (en) * | 2014-09-30 | 2014-12-24 | 南阳市汇博生物技术有限公司 | Organic polyurethane foam dressing and preparation method thereof |
| CN110664615A (en) * | 2019-10-23 | 2020-01-10 | 安徽金牛药械股份有限公司 | Plaster band-aid manufacturing equipment |
| CN210145093U (en) * | 2019-05-07 | 2020-03-17 | 河南福润药业有限公司 | A medicine subsides synthesizer for cold compress production and processing usefulness |
| CN211168717U (en) * | 2019-10-29 | 2020-08-04 | 江西金力永磁科技股份有限公司 | High-speed general square piece material loading machine |
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2021
- 2021-09-06 CN CN202111037358.8A patent/CN113752601B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225665A (en) * | 2014-09-30 | 2014-12-24 | 南阳市汇博生物技术有限公司 | Organic polyurethane foam dressing and preparation method thereof |
| CN210145093U (en) * | 2019-05-07 | 2020-03-17 | 河南福润药业有限公司 | A medicine subsides synthesizer for cold compress production and processing usefulness |
| CN110664615A (en) * | 2019-10-23 | 2020-01-10 | 安徽金牛药械股份有限公司 | Plaster band-aid manufacturing equipment |
| CN211168717U (en) * | 2019-10-29 | 2020-08-04 | 江西金力永磁科技股份有限公司 | High-speed general square piece material loading machine |
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