CN110961318A - Equipment and method for directly coating two surfaces of swelling membrane - Google Patents
Equipment and method for directly coating two surfaces of swelling membrane Download PDFInfo
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- CN110961318A CN110961318A CN201911391275.1A CN201911391275A CN110961318A CN 110961318 A CN110961318 A CN 110961318A CN 201911391275 A CN201911391275 A CN 201911391275A CN 110961318 A CN110961318 A CN 110961318A
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- 230000008961 swelling Effects 0.000 title claims abstract description 140
- 238000000576 coating method Methods 0.000 title claims abstract description 100
- 239000011248 coating agent Substances 0.000 title claims abstract description 98
- 239000012528 membrane Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 90
- 238000007599 discharging Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 238000013329 compounding Methods 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000007704 transition Effects 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 8
- 239000006255 coating slurry Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229920002799 BoPET Polymers 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000010073 coating (rubber) Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000002522 swelling effect Effects 0.000 description 2
- 238000010023 transfer printing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
- B32B37/0053—Constructional details of laminating machines comprising rollers; Constructional features of the rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides equipment and a method for directly coating two sides of a swelling film, which comprises a discharging deviation rectifying mechanism, wherein the discharging deviation rectifying mechanism is sleeved with the swelling film, the swelling film is guided into a coating mechanism through a plurality of first guide rollers and second guide rollers which are arranged at intervals, the swelling film is fed into an oven after being coated with slurry, and the dried swelling film is guided into a composite mechanism through the first guide rollers after entering a material receiving deviation rectifying mechanism; because the swelling membrane is tightly adhered with the original protective membrane on the B surface, when the slurry is coated on the swelling membrane, the swelling membrane is restrained by the adhesion of the original protective membrane on the B surface, and the swelling deformation can not occur. When the surface B is coated, the swelling membrane is tightly adhered to the surface A support membrane, and when the slurry is coated on the swelling membrane, the swelling membrane is bound by the adhesion of the surface A support membrane, so that the swelling membrane cannot expand and deform.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to equipment and a method for directly coating two surfaces of a swelling membrane.
Background
Swelling is the phenomenon that a high molecular polymer expands in volume in a solvent. For example, an ion exchange resin is a hydrophilic high molecular compound, and when a dry ion exchange resin is immersed in water, its volume is often increased. The film produced by using the ion exchange resin has swelling property, and the film with the swelling property is called swelling film for short.
In the industry such as fuel cells, solvent-containing slurry is needed to be coated on the A/B surfaces of a swelling membrane, and if the solvent-containing slurry is directly coated on the swelling membrane, the swelling membrane can expand and deform, so that the production quality requirement cannot be met. The existing production process is completed by a transfer printing mode, namely, slurry containing a solvent is coated on other films without swelling characteristics, and the coating is transferred to the swelling films by other technologies after the slurry is dried. The production process can avoid the problem of expansion deformation of the swelling membrane because the slurry is not directly coated on the swelling membrane, but the production process has the problems of complex working procedures, low production efficiency, poor adhesion between the coating and the swelling membrane after transportation and the like.
Disclosure of Invention
The invention aims to provide equipment and a method for directly coating two sides of a swelling membrane aiming at the defects of the prior art, so that the problems of swelling membrane expansion deformation, poor adhesion between a coating and the swelling membrane after transportation and the like are avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the device for directly coating two sides of the swelling film comprises a discharging deviation rectifying mechanism, wherein the discharging deviation rectifying mechanism is sleeved with the swelling film, the swelling film is guided into a coating mechanism through a plurality of first guide rollers and second guide rollers which are arranged at intervals, the swelling film is fed into an oven after being coated with slurry, and the dried swelling film is guided into a composite mechanism through the first guide rollers after entering a material receiving deviation rectifying mechanism;
the A-surface support film is sleeved in the A-surface support film discharging mechanism, the A-surface support film is guided into the composite mechanism through the first guide rollers arranged at intervals, the composite mechanism is used for compounding the swelling film and the A-surface support film, and the compounded swelling film is peeled off from the material receiving mechanism to complete material receiving of the semi-finished swelling film.
Further, drop feed mechanism includes the blowing axle, blowing axle driving motor is installed to one side of blowing axle, the spaced guiding axle that is equipped with under the blowing axle, the spaced detection sensor that rectifies that is equipped with under the guiding axle, the blowing axle driving motor the guiding axle the first detection sensor that rectifies all installs the support frame, the bottom of support frame is installed on the guide rail.
Further, a first deviation rectifying actuator is further installed on the supporting frame, and after receiving a signal output by the first deviation rectifying detection sensor, the first deviation rectifying actuator drives the supporting frame to move back and forth on the guide rail, so that the positions of the swelling membrane on the discharging shaft and the guide shaft are adjusted.
Further, the coating mechanism comprises a first coating plate and a second coating plate, the first coating plate and the second coating plate are attached through nuts, a feed port is formed in the side wall of the second coating plate, and the feed port is communicated with a gap between the first coating plate and the second coating plate; coating head driving cylinders are arranged at two ends of one side, away from the feed port, of the second coating plate;
the two sides of the surface of the first coating plate are provided with a mechanical dial indicator and a tight clearance adjusting differential screw rod, and the mechanical dial indicator and the tight clearance adjusting differential screw rod on the same side are arranged adjacently.
Further, a gap between the first coating plate and the second coating plate is tangentially arranged with the adjacent second guide roller.
Furthermore, the material receiving and deviation rectifying mechanism comprises a transition plate, transition rollers are arranged on two sides of the upper surface of the transition plate, a second deviation rectifying actuator is arranged on the lower surface of the transition plate, a second deviation rectifying detection sensor is arranged on one side of the second deviation rectifying actuator, and the second deviation rectifying actuator drives the transition plate to horizontally shake by taking the center of the transition plate as an axis after receiving a signal of the second deviation rectifying detection sensor.
Further, compound mechanism includes the soft roller of rubber coating, install the hard roller of steel under the soft roller of rubber coating, the hard roller driving motor of steel is installed to one side of the hard roller of steel, the soft roller of rubber coating with the hard roller of steel all installs actuating cylinder from the both ends of one side, the soft roller of rubber coating with the both sides of the adjacent department of the hard roller of steel all are equipped with interval adjusting screw.
Further, the stripping and receiving mechanism comprises an air expansion shaft, and one side of the air expansion shaft is provided with an air expansion shaft driving motor;
the stripping and receiving mechanisms are two and are respectively arranged on two sides of the first guide roller.
Further, a method for directly coating both sides of a swelling membrane, comprising the following steps:
s1, the swelling film enters a discharging deviation rectifying mechanism to finish discharging and rectifying of the swelling film;
s2, coating slurry on the surface A of the swelling film;
s3, drying in an oven;
s4, the swelling film enters a material receiving and deviation rectifying mechanism to finish the deviation rectification of the semi-finished swelling film;
s5, compounding surface A: the surface A of the swelling membrane and the surface A of the supporting membrane discharging mechanism pass through a compounding mechanism to complete surface A compounding;
s6, stripping the original protective film on the surface B by a stripping and receiving mechanism, and completing the receiving of the semi-finished swelling film;
s7, manually transferring the semi-finished swelling membrane to a discharging and deviation rectifying mechanism to finish discharging and deviation rectifying of the semi-finished swelling membrane;
s8, coating slurry on the surface B of the semi-finished swelling film;
s9, drying in an oven;
s10, enabling the swelling film to enter a material receiving and deviation rectifying mechanism to finish the deviation rectification of the finished swelling film;
s11, peeling the A-surface supporting film by the peeling and material receiving mechanism, and completing the material receiving of the finished swelling film.
Further, during compounding, the surface A of the swelling film covers the viscous surface of the surface A supporting film and simultaneously enters a compounding double-roller mechanism, so that the surface A compounding is completed;
the A-side support film is made of a PET film, and is back-glued on one side;
and the surface A of the swelling membrane is completely and correspondingly attached to the surface A of the supporting membrane.
The invention has the beneficial effects that: the two-side direct coating method can directly coat slurry containing a solvent on a swelling film, before the coating production of the surface A, the surface B of the swelling film is provided with an original protective film, the surface A of the swelling film is coated with a slurry coating, after the coating is dried, a layer of A-side supporting film with low viscosity is compounded on the coating of the surface A, so that the surface A of the swelling film is tightly adhered with the supporting film, then the original protective film of the surface B is peeled off for coating, and after the surface B coating is dried, the surface A supporting film on the surface A coating is peeled off;
when the surface A is coated, the swelling membrane is tightly adhered to the original protective membrane of the surface B, and when the slurry is coated on the swelling membrane, the swelling membrane is bound by the adhesion of the original protective membrane of the surface B, so that the swelling deformation cannot occur. When the surface B is coated, the swelling membrane is tightly adhered to the surface A support membrane, and when the slurry is coated on the swelling membrane, the swelling membrane is bound by the adhesion of the surface A support membrane, so that the swelling membrane cannot expand and deform. Because the A surface supporting film has the characteristic of low viscosity, the A surface supporting film can be bonded with the swelling film to play a role in supporting and protecting, and the coating on the swelling film can be prevented from being damaged when the A surface supporting film is peeled off.
Drawings
FIG. 1 is a schematic diagram of an apparatus for direct coating of both sides of a swollen membrane;
FIG. 2 is a schematic structural view of a discharge mechanism;
FIG. 3 is a perspective view of the coating mechanism;
FIG. 4 is one of the schematic side views of the coating mechanism;
FIG. 5 is a second schematic side view of the coating mechanism;
FIG. 6 is a schematic structural view of a material receiving deviation rectifying mechanism;
FIG. 7 is a schematic structural view of a compound mechanism;
FIG. 8 is a schematic structural view of the stripping and collecting mechanism;
FIG. 9 is a block diagram of the operation of a two-sided direct coating process for a swollen membrane;
FIG. 10 is a view showing the structure of the swollen membrane after peeling off the support membrane;
fig. 11 is a performance comparison diagram of a membrane electrode assembly unit cell.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, an apparatus for directly coating two sides of a swelling film includes a discharging deviation rectifying mechanism 1, a swelling film is sleeved on the discharging deviation rectifying mechanism 1, the swelling film is guided into a coating mechanism 2 through a plurality of first guide rollers 801 and second guide rollers 802 which are arranged at intervals, the swelling film is sent into an oven 3 after being coated with slurry, and the dried swelling film is sent into a material receiving deviation rectifying mechanism 4 and then is guided into a compounding mechanism 6 through the first guide rollers 801;
the A-surface support film is sleeved in the A-surface support film discharging mechanism 5, the A-surface support film is guided into the compounding mechanism 6 through the first guide rollers 801 arranged at intervals, the compounding mechanism 6 compounds the swelling film and the A-surface support film, and the compounded swelling film is subjected to material receiving, stripping and material receiving by the material receiving and receiving mechanism 7 to complete material receiving of the semi-finished swelling film.
Referring to fig. 2, the discharging mechanism 1 includes a discharging shaft 101, a discharging shaft driving motor 102 is installed on one side of the discharging shaft 101, guide shafts 103 are arranged under the discharging shaft 101 at intervals, first deviation-rectifying detection sensors 104 are arranged under the guide shafts 103 at intervals, supporting frames 105 are installed on the discharging shaft 101, the discharging shaft driving motor 102, the guide shafts 103 and the first deviation-rectifying detection sensors 104, and the bottoms of the supporting frames 105 are installed on guide rails 106.
The supporting frame 105 is further provided with a first deviation rectifying actuator 107, and after receiving the signal output by the first deviation rectifying detection sensor 104, the first deviation rectifying actuator 107 drives the supporting frame 105 to reciprocate on the guide rail 106, so as to adjust the positions of the swelling films on the discharging shaft 101 and the guide shaft 103.
The coil stock is sleeved on the discharging shaft 101, and the discharging shaft driving motor 102 rotates to drive the discharging shaft 101 to rotate; the discharging shaft driving motor 102 is controlled by a servo motor torque mode;
a first deviation-rectifying detection sensor 104 for detecting the edge position of the swollen membrane and feeding back to a first deviation-rectifying actuator 107;
the first deviation-rectifying actuator 107 adjusts the position of the swelling membrane according to the position feedback of the first deviation-rectifying detection sensor 104, so that the swelling membrane is positioned in the center of the equipment.
That is, the discharge shaft 101 reciprocates in the width direction of the swollen film, thereby centering the swollen film.
Referring to fig. 3, 4 and 5, the coating mechanism 2 includes a first coating plate 201 and a second coating plate 202, the first coating plate 201 and the second coating plate 202 are attached to each other by a nut, a side wall of the second coating plate 202 is provided with a feed port 303, and the feed port 303 is communicated with a gap between the first coating plate 201 and the second coating plate 202; coating head driving cylinders 204 are arranged at two ends of one side, away from the feed port 303, of the second coating plate 202;
the two sides of the surface of the first coating plate 201 are both provided with a mechanical dial indicator 205 and a tight clearance adjusting differential screw 206, and the mechanical dial indicator 205 and the tight clearance adjusting differential screw 206 on the same side are arranged adjacently.
The gap between the first coating plate 201 and the second coating plate 202 is arranged tangentially to the adjacent second guide roller 802.
Wherein, the mechanical dial indicator 205 is used for detecting the position of the die head from the coating roller;
the tight clearance adjustment differential screw 206 will produce a displacement difference of 0.05mm per revolution, with a resolution up to 1 um.
The coating head drives the air cylinder 204 for popping up the coating mechanism 2 from the swollen film on the second guide roller 802.
In addition, the coating material is poured from the feed opening 203, flows into the gap where the first coating plate 201 and the second coating plate 202 are connected, the coating material extruded from the gap between the first coating plate 201 and the second coating plate 202 is tangentially coated on the swelling film because the second guide roller 802 adjacent to the coating mechanism 2 is tangential to the gap between the first coating plate 201 and the second coating plate 202, and the swelling film is sleeved on the second guide roller 802, so that the second guide roller 802 is rotated to uniformly coat the coating material on the swelling film.
Referring to fig. 6, the material receiving and deviation rectifying mechanism 4 includes a transition plate 401, transition rollers 402 are disposed on two sides of the upper surface of the transition plate 401, a second deviation rectifying actuator 403 is mounted on the lower surface of the transition plate 401, a second deviation rectifying sensor 404 is mounted on one side of the second deviation rectifying actuator 403, and the second deviation rectifying actuator 403 drives the transition plate 401 to horizontally swing around the center of the movement track of the transition plate 401 as an axis after receiving a signal of the second deviation rectifying sensor 404.
And a second deviation-rectifying detection sensor 404 for detecting the edge position of the swelling film and feeding back to the deviation-rectifying actuator.
And a second deviation-rectifying actuator 403 for adjusting the position of the swelling film to the center of the apparatus according to the position feedback of the second deviation-rectifying detection sensor 404.
A transition roll 402 for conveying the swollen film.
Referring to fig. 7, the composite mechanism 6 includes a rubber-covered soft roller 601, a steel hard roller 602 is installed right below the rubber-covered soft roller 601, a steel hard roller driving motor 603 is installed on one side of the steel hard roller 602, adjusting cylinders 604 are installed at two ends of a side of the rubber-covered soft roller 601 away from the steel hard roller 602, and space adjusting screws 605 are installed on two sides of a position where the rubber-covered soft roller 601 and the steel hard roller 602 are adjacent to each other.
The adjusting cylinder 604 is used for realizing the closing and the bouncing actions of the rubber coating soft roller 601 and the steel hard roller 602 through the extension and the retraction of the adjusting cylinder 604;
an adjusting screw 605 for adjusting the gap between the rubber-coated soft roller and the steel hard roller;
the steel hard roll driving motor 603 is a servo motor or a variable frequency motor.
Referring to fig. 8, the stripping and receiving mechanism 7 includes an air shaft 701, and an air shaft driving motor 702 is disposed on one side of the air shaft 701;
referring to fig. 1, there are two peeling and collecting mechanisms 7, and the two peeling and collecting mechanisms 7 are respectively disposed on two sides of the first guide roller 801.
Example one
Referring to fig. 9, a method for directly coating both sides of a swelling film includes the following steps:
s1, the swelling film enters a discharging deviation rectifying mechanism to finish discharging and rectifying of the swelling film;
s2, coating slurry on the surface A of the swelling film;
the discharging deviation rectifying mechanism 1 is composed of a first deviation rectifying detection sensor 104 and a first deviation rectifying actuator 107, wherein the first deviation rectifying detection sensor 104 is used for detecting the position of the swelling film, and if the position is not in the center of the equipment, the position of the swelling film is adjusted by the first deviation rectifying actuator 107 to be in the center of the equipment.
The coating of the surface A of the swelling film and the coating of the surface B adopt a slit type extrusion coating mode;
s3, drying in an oven;
the heating mode is hot air heating; the length of the oven is determined by the coating speed, the coating thickness and the volatilization performance of the solvent; the good drying effect is obtained by adjusting the temperature of the oven, the height of the hot air outlet from the swelling membrane, the hot air inlet amount and the air exhaust amount.
S4, the swelling film enters a material receiving and deviation rectifying mechanism 4 to finish the deviation rectification of the semi-finished swelling film;
the material receiving deviation rectifying mechanism is composed of a second deviation rectifying actuator 403 and a second deviation rectifying detection sensor 404, the second deviation rectifying detection sensor 404 is used for detecting the position of the swelling film, and if the position is not in the center of the equipment, the position of the swelling film is adjusted by the second deviation rectifying actuator 403 to be in the center of the equipment.
S5, compounding surface A: the A surface of the swelling membrane and the A surface of the supporting membrane discharging mechanism pass through a compounding mechanism 6 to complete the compounding of the A surface;
the A surface of the swelling film covers the viscous surface of the A surface supporting film and simultaneously enters the compounding mechanism 6, and the equipment obtains a good compounding effect by adjusting the gap between the rubber-coated soft roller 601 and the steel hard roller 602, so that the compounding of the A surface is completed.
S6, peeling the original protective film on the surface B by the peeling and material receiving mechanism 7, and completing material receiving of the semi-finished swelling film;
s7, manually transferring the semi-finished swelling membrane to a discharging and deviation rectifying mechanism 1 to finish discharging and deviation rectifying of the semi-finished swelling membrane;
s8, coating slurry on the surface B of the semi-finished swelling film;
s9, drying in an oven;
s10, enabling the swelling film to enter a material receiving and deviation rectifying mechanism to finish the deviation rectification of the finished swelling film;
s11, peeling the A-surface supporting film by the peeling and material receiving mechanism 7, and completing the material receiving of the finished swelling film.
The surface A supporting film and the material are PET films, and the single surface is back glued, and the surface A supporting film has the characteristic of low viscosity, so that the coating on the swelling film cannot be damaged when the surface A supporting film is peeled off.
And the surface A of the swelling membrane is completely and correspondingly attached to the surface A of the supporting membrane. Otherwise, swelling may occur at the position where the support membrane and the swollen membrane are detached.
Referring to fig. 10, when the surface a is coated, since the swelling film is tightly adhered to the original protective film of the surface B, when the slurry is coated on the swelling film, the swelling film is restrained by the adhesion of the original protective film of the surface B, and no expansion deformation occurs. When the surface B is coated, the swelling membrane is tightly adhered to the surface A support membrane, and when the slurry is coated on the swelling membrane, the swelling membrane is bound by the adhesion of the surface A support membrane, so that the swelling membrane cannot expand and deform. Because the A-side supporting film has the characteristic of low viscosity, the A-side supporting film can be bonded with the swelling film to play a role in supporting and protecting, and can also avoid damaging the coating on the swelling film when the A-side supporting film is peeled off
The coating equipment adopts roll-to-roll slit type extrusion coating composite integrated equipment, so that the composite and coating integrated continuous production is realized.
Comparative examples
Spraying the first catalyst slurry on the surface A of the proton exchange membrane by adopting a spraying method;
coating the second catalyst slurry on a transfer printing medium, and drying;
and (3) attaching the dried transfer medium to the proton exchange membrane sprayed with the first catalyst slurry, wherein the surface of the transfer medium sprayed with the second catalyst faces to the B surface of the proton exchange membrane which is not sprayed, covering a protective film on the A surface of the proton exchange membrane sprayed with the first catalyst slurry, and stripping the transfer medium after hot pressing by adopting a hot transfer process to obtain the fuel cell membrane electrode.
As shown in fig. 11, when the first example is compared with the comparative example, it can be seen that after hot pressing at a certain temperature and pressure, the performance is not significantly changed, but the catalyst layer is not easily peeled off after hot pressing;
it can be seen from the first embodiment and the comparative example that the battery performance of the present technical solution is superior to that of the comparative example.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An apparatus for direct coating of both sides of a swollen membrane, characterized by: the device comprises a discharging deviation rectifying mechanism (1), wherein a swelling film is sleeved on the discharging deviation rectifying mechanism (1), the swelling film is guided into a coating mechanism (2) through a plurality of first guide rollers (801) and second guide rollers (802) which are arranged at intervals, slurry is coated on the swelling film and then sent into an oven (3), and the dried swelling film enters a material receiving deviation rectifying mechanism (4) and then is guided into a composite mechanism (6) through the first guide rollers (801);
the A-surface support film is sleeved in the A-surface support film discharging mechanism (5), the A-surface support film is guided into the composite mechanism (6) through the first guide rollers (801) arranged at intervals, the composite mechanism (6) is used for compounding the swelling film and the A-surface support film, and the compounded swelling film is subjected to material receiving, stripping and material receiving mechanism (7) to complete material receiving of the semi-finished swelling film.
2. The apparatus according to claim 1, wherein the apparatus for direct coating of both sides of the swollen membrane comprises: drop feed mechanism (1) is including blowing axle (101), blowing axle driving motor (102) is installed to one side of blowing axle (101), spaced guiding axle (103) that is equipped with under blowing axle (101), spaced being equipped with first detection sensor (104) of rectifying under guiding axle (103), blowing axle (101) blowing axle driving motor (102) guiding axle (103) first detection sensor (104) of rectifying all install support frame (105), install on guide rail (106) the bottom of support frame (105).
3. The apparatus according to claim 2, wherein the apparatus for direct coating of both sides of the swollen membrane comprises: the supporting frame (105) is further provided with a first deviation rectifying actuator (107), and after the first deviation rectifying actuator (107) receives a signal output by the first deviation rectifying detection sensor (104), the supporting frame (105) is driven to move back and forth on the guide rail (106), so that the positions of the swelling films on the discharging shaft (101) and the guide shaft (103) are adjusted.
4. The apparatus according to claim 1, wherein the apparatus for direct coating of both sides of the swollen membrane comprises: the coating mechanism (2) comprises a first coating plate (201) and a second coating plate (202), the first coating plate (201) and the second coating plate (202) are attached through nuts, a feed port (303) is formed in the side wall of the second coating plate (202), and the feed port (303) is communicated with a gap between the first coating plate (201) and the second coating plate (202); coating head driving cylinders (204) are arranged at two ends of one side, away from the feed port (303), of the second coating plate (202);
the two sides of the surface of the first coating plate (201) are respectively provided with a mechanical dial indicator (205) and a tight clearance adjusting differential screw (206), and the mechanical dial indicator (205) and the tight clearance adjusting differential screw (206) on the same side are arranged adjacently.
5. The apparatus according to claim 4, wherein the two-sided direct coating apparatus comprises: the gap between the first coating plate (201) and the second coating plate (202) is arranged tangentially to the adjacent second guide roller (802).
6. The apparatus according to claim 1, wherein the apparatus for direct coating of both sides of the swollen membrane comprises: the material receiving and deviation rectifying mechanism (4) comprises a transition plate (401), transition rollers (402) are arranged on two sides of the upper surface of the transition plate (401), a second deviation rectifying actuator (403) is installed on the lower surface of the transition plate (401), a second deviation rectifying detection sensor (404) is installed on one side of the second deviation rectifying actuator (403), and the second deviation rectifying actuator (403) drives the transition plate (401) to horizontally shake by taking the motion track center of the transition plate (401) as an axis after receiving a signal of the second deviation rectifying detection sensor (404).
7. The apparatus according to claim 1, wherein the apparatus for direct coating of both sides of the swollen membrane comprises: the compound mechanism (6) comprises a rubber-coated soft roller (601), a steel hard roller (602) is installed under the rubber-coated soft roller (601), a steel hard roller driving motor (603) is installed on one side of the steel hard roller (602), adjusting cylinders (604) are installed at two ends of one side, away from the steel hard roller (602), of the rubber-coated soft roller (601), and spacing adjusting screws (605) are arranged on two sides of the adjacent position of the steel hard roller (602).
8. The apparatus according to claim 1, wherein the apparatus for direct coating of both sides of the swollen membrane comprises: the stripping and receiving mechanism (7) comprises an air expansion shaft (701), and one side of the air expansion shaft (701) is provided with an air expansion shaft driving motor (702);
the stripping and receiving mechanisms (7) are two, and the stripping and receiving mechanisms (7) are respectively arranged on two sides of the first guide roller (801).
9. A method for directly coating both sides of a swollen membrane, which is characterized by comprising the following steps:
s1, the swelling film enters a discharging deviation rectifying mechanism (1) to finish discharging and rectifying of the swelling film;
s2, coating slurry on the surface A of the swelling film;
s3, drying in an oven;
s4, the swelling film enters a material receiving and deviation rectifying mechanism (4) to finish the deviation rectification of the semi-finished swelling film;
s5, compounding surface A: the A surface of the swelling membrane and the A surface of the supporting membrane discharging mechanism pass through a compounding mechanism (6) to complete A surface compounding;
s6, stripping the original protective film on the surface B by a stripping and material receiving mechanism (7), and completing material receiving of the semi-finished swelling film;
s7, manually transferring the semi-finished swelling membrane to a discharging deviation rectifying mechanism (1) to finish discharging and deviation rectifying of the semi-finished swelling membrane;
s8, coating slurry on the surface B of the semi-finished swelling film;
s9, drying in an oven;
s10, enabling the swelling film to enter a material receiving and deviation rectifying mechanism to finish the deviation rectification of the finished swelling film;
s11, peeling the A-surface supporting film by the peeling and material receiving mechanism (7), and completing the material receiving of the finished swelling film.
10. The method of claim 9, wherein the two-side direct coating of the swollen membrane comprises: during compounding, the surface A of the swelling film covers the viscous surface of the surface A supporting film and enters a compounding counter roll mechanism simultaneously, so that the surface A compounding is completed;
the A-side support film is made of a PET film, and is back-glued on one side;
and the surface A of the swelling membrane is completely and correspondingly attached to the surface A of the supporting membrane.
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| CN201911391275.1A CN110961318A (en) | 2019-12-30 | 2019-12-30 | Equipment and method for directly coating two surfaces of swelling membrane |
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| CN201911391275.1A CN110961318A (en) | 2019-12-30 | 2019-12-30 | Equipment and method for directly coating two surfaces of swelling membrane |
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Application publication date: 20200407 |