CN117324195A - Coating die head structure with flow direction changed by cavity - Google Patents
Coating die head structure with flow direction changed by cavity Download PDFInfo
- Publication number
- CN117324195A CN117324195A CN202311297479.5A CN202311297479A CN117324195A CN 117324195 A CN117324195 A CN 117324195A CN 202311297479 A CN202311297479 A CN 202311297479A CN 117324195 A CN117324195 A CN 117324195A
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- Prior art keywords
- cavity
- coating
- gasket
- flow balance
- lip
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- 239000011248 coating agent Substances 0.000 title claims abstract description 80
- 238000000576 coating method Methods 0.000 title claims abstract description 80
- 239000002002 slurry Substances 0.000 claims abstract description 82
- 239000011247 coating layer Substances 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 41
- 230000010354 integration Effects 0.000 claims description 5
- 239000006255 coating slurry Substances 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 241001133184 Colletotrichum agaves Species 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
-
- 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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve
-
- 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
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
- G01B11/0625—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating with measurement of absorption or reflection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
- G01B11/0683—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating measurement during deposition or removal of the layer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses a coating die head structure with a cavity capable of changing flow direction, which comprises an upper die and a lower die, wherein a first gasket is arranged between the upper die and the lower die, the lower die is provided with a feed inlet and a cavity, the first gasket is in a shape of a '[', a slit is formed between the upper die and the lower die at an opening of the first gasket, an upper lip is arranged on the front surface of the upper die, a lower lip corresponding to the upper lip is arranged on the front surface of the lower die, a lip discharging from the slit is formed among the first gasket, the upper lip and the lower lip, a flow balance block is arranged at the bottom of the first gasket, and the cavity is divided into a first sub-cavity and a second sub-cavity by the flow balance block: after the slurry enters the first sub-cavity, the slurry flows towards the two ends of the first sub-cavity and enters the second sub-cavity from the two ends, so that the problem that the thickness of the coating layer is light on two sides and heavy in the middle is solved.
Description
Technical Field
The invention relates to the technical field of lithium electric coating die heads, in particular to a coating die head structure with a cavity capable of changing flow direction.
Background
The lithium electric coating die head is characterized in that lithium electric slurry enters a die head cavity from a die head feed inlet, and then the lithium electric slurry is coated on a lithium electric foil running at a constant speed from a die head slit lip, so that a pole piece of a lithium battery is obtained, and the coating die head has the following problems in the prior art:
1. only one feed port enters the cavity for storing the slurry from the middle of the die head, which leads to inconsistent speeds of two sides and the middle of the coating in wide coating, and thus leads to light two sides and heavy middle of the thickness of the coating layer;
2. the flow speed of the slurry cannot be controlled according to the viscosity of the slurry, so that the thickness of a coating surface using slurries with different viscosities is uneven;
3. the gaskets with different thicknesses are required to be manually replaced, the coating flow rate cannot be adjusted in real time, and the flow rate after the gaskets are replaced is ensured to meet the requirement;
4. the thicknesses of the two sides and the middle of the coating surface cannot be monitored in real time, and the automatic control of the flow balance blocks cannot be realized so that the thicknesses of the two sides and the middle of the coating surface are uniform.
Disclosure of Invention
The invention aims to provide a coating die head structure with a cavity capable of changing flow direction, so as to solve the problems that in the background art, slurry flow rates with different viscosities are different, the thickness of a coating surface is uneven, gaskets are manually replaced, and the coating flow rate cannot be adjusted in real time.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a coating die head structure that cavity changed flow direction, includes mould and lower mould, go up the mould with be equipped with first gasket between the lower mould, the lower mould is equipped with feed inlet and cavity, the feed inlet with the cavity is mutually circulated, the feed inlet is used for supplying coating thick liquids to get into the cavity, first gasket is "[" shape, the opening part of first gasket makes go up the mould with form the slit between the lower mould, the cavity with the slit is linked together for coating thick liquids circulation.
The upper die is provided with an upper lip on the front surface, the lower die is provided with a lower lip corresponding to the upper lip on the front surface, a lip discharging from the slit is formed between the first gasket, the upper lip and the lower lip, slurry flows to the lip through the slit after entering the cavity from the feeding port, and the first gasket ensures that the slurry flows out from the lip.
The bottom of first gasket is equipped with the flow balance piece, the flow balance piece will the cavity divide into first minute chamber and second minute chamber, first gasket with be fixed connection between the flow balance piece, the flow balance piece with there is the clearance bottom the cavity, the flow balance piece with there is the breach at the both ends of cavity, through the clearance with the breach realizes the circulation between first minute chamber with the second minute chamber.
After the slurry enters the first sub-cavity from the feeding hole, the slurry in the first sub-cavity flows into the second sub-cavity through the gap and the notch, and flows to the lip through the slit, so that the speed difference between the slurry at two sides in the second sub-cavity and the slurry in the middle flows to the lip through the slit is reduced.
The flow balance block is arranged into three sections, the height of the flow balance block at any section can be adjusted, the width of the gap can be flexibly adjusted, the flow of slurry in the first sub-cavity to the second sub-cavity through the gap is changed, namely the flow speed of the slurry flowing from the middle slurry in the second sub-cavity to the lip through the slit is changed.
In an embodiment one, the flow balance block of each section is composed of a pressing block, a second gasket and a partition plate, the second gasket is detachably connected with the pressing block, the second gasket is detachably connected with the partition plate, and the pressing block is connected with the partition plate through the second gasket.
When slurries with different viscosities are used, the gap between the partition plate and the bottom of the cavity can be changed by changing the second gaskets with different thicknesses, so that the amount of the slurries in the first subchamber flowing into the second subchamber from the gap is changed, namely the speed of the slurries in the first subchamber flowing into the second subchamber from the gap is changed, and the speed of the slurries on two sides in the second subchamber flowing into the lip through the slit is equal to the speed of the middle slurry flowing into the lip through the slit.
In the second embodiment, the flow balance block of each section is composed of a pressing block, an elastic gasket and a partition plate, wherein the pressing block is fixedly connected with the elastic gasket, and the elastic gasket is fixedly connected with the partition plate.
The flow balance block comprises a flow balance block, wherein a partition plate is arranged on the flow balance block, a groove is arranged in the partition plate of each section, one side surface of the groove is a rack surface, the other side surface of the groove is a smooth surface, a gear is arranged in the groove, teeth of the gear are meshed with grooves of the rack surface, an interlocking matching relationship is formed between the teeth of the gear and the grooves of the rack surface, and the gear can drive the partition plate to move up and down.
The lower die back plate is provided with a motor, the center of the motor is provided with a rotating shaft, the lower die back plate is fixedly connected with the motor, the rotating shaft is connected with the other end of the motor, which is connected with the gear, the rotating shaft is fixedly connected with the gear, and the rotating shaft is perpendicular to the lower die back plate.
The grooves are formed in the two ends of each section in the partition board of the flow balance block, the gears are arranged at the two ends of each section in the partition board of the flow balance block, and the partition board is prevented from being unbalanced and toppled.
The elastic gasket is made of elastic materials, the elastic change is automatically adjusted according to the up-and-down movement degree of the partition plate, and the top and the bottom of the groove limit the up-and-down movement range of the partition plate.
The upper die is provided with a chip and a plurality of laser sensors, the plurality of laser sensors are arranged according to the positions of the flow balance blocks of each section, and the coating surface of each section corresponds to one section of the flow balance blocks and one laser sensor.
The laser sensor can emit laser beams, the laser beams can be reflected after passing through a coating layer, the laser sensor receives the reflected beams, and the laser sensor measures the signal integral value of the reflected beams through an energy integration algorithm to obtain the intensity of the reflected beams.
The chip obtains the thickness of a coating layer by processing the intensity of the reflected light beam, wherein the stronger the intensity of the reflected light beam is, the thicker the coating layer is, and the weaker the intensity of the reflected light beam is, the thinner the coating layer is.
The working flow of the motor comprises the following steps of S1: a plurality of laser sensors emit laser beams, the laser beams are reflected on a coating surface to generate reflected beams;
step S2: the laser sensors respectively receive the reflected light beams, the laser sensors calculate signal integral values of the reflected light beams through an energy integral algorithm to obtain the intensity of the reflected light beams, and the chip processes the intensity of the reflected light beams to obtain the thickness of a coating surface of each section;
step S3: the chip obtains a target section with different coating surface thickness from other sections by comparing the coating surface thickness of each section;
step S4: judging whether the coating surface of the target section is thicker than the coating surfaces of the other sections;
step S5: and if the coating surface of the target section is thicker than the coating surfaces of other sections, controlling the motor corresponding to the target section to rotate reversely, so that the gap between the flow balance block and the bottom of the cavity is reduced, and if the coating surface of the target section is thinner than the coating surfaces of other sections, controlling the motor corresponding to the target section to rotate positively, so that the gap between the flow balance block and the bottom of the cavity is enlarged.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Compared with the prior art, the invention has the beneficial effects that:
1. dividing the die head cavity into two parts, so that slurry can flow from two ends of the first sub cavity to the second sub cavity, thereby improving the flow velocity at two ends of the lip, and further solving the problem of light and heavy thickness at two sides of the coating surface;
2. the flow balance blocks are arranged in a multi-section mode, any section of flow balance block can be adjusted, the speed of the slurry can be flexibly adjusted according to the slurries with different viscosities, and the thickness of a coating surface is uniform;
3. the gap width between the electric control flow balance block and the bottom of the cavity can be accurately controlled, so that the thickness uniformity of the coating surface is realized;
4. the thickness of the coating surface is monitored in real time in a sectionalized mode by adopting a sensor, the gap width between the flow balance block and the bottom of the cavity is controlled in an automatic sectionalized mode, and closed-loop control is achieved to enable the thickness of the coating surface to be uniform.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention;
FIG. 3 is a schematic view of a portion of the structure of the present invention;
FIG. 4 is a schematic view of a portion of a structure of a first embodiment of the present invention;
FIG. 5 is a schematic diagram of a portion of a second embodiment of the present invention;
FIG. 6 is a schematic diagram of a portion of a second embodiment of the present invention;
FIG. 7 is a schematic diagram of a portion of a second embodiment of the present invention;
fig. 8 is a flowchart of the second embodiment of the present invention.
Wherein, 1, upper mould; 2. a lower die; 3. a first gasket; 4. a feed inlet; 5. a cavity; 6. a slit; 7. an upper lip; 8. a lower lip; 9. a lip; 10. a flow balance block; 11. a first subchamber; 12. a second subchamber; 13. a gap; 14. a notch; 15. briquetting; 16. a second gasket; 17. a partition plate; 18. an elastic pad; 19. a groove; 20. a rack surface; 21. a smooth surface; 22. a gear; 23. a motor; 24. a rotating shaft; 25. a chip; 26. a laser sensor; 101. a first section; 102. a second section; 103. and a third section.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus consistent with some aspects of the disclosure as detailed in the accompanying claims.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. 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. 1-3, a coating die head structure with a flow direction changed for a cavity in an embodiment of the present invention includes an upper die 1 and a lower die 2, a first gasket 3 is disposed between the upper die 1 and the lower die 2, the lower die 2 is provided with a feed inlet 4 and a cavity 5, the feed inlet 4 and the cavity 5 are in communication with each other, the feed inlet 4 is used for allowing coating slurry to enter the cavity 5, the first gasket 3 is in a "[ -shape, a slit 6 is formed between the upper die 1 and the lower die 2 at an opening of the first gasket 3, and the cavity 5 is in communication with the slit 6 for allowing the coating slurry to circulate.
The front of the upper die 1 is provided with an upper lip 7, the front of the lower die 2 is provided with a lower lip 8 corresponding to the upper lip 7, a lip 9 discharging from the slit 6 is formed between the first gasket 3, the upper lip 7 and the lower lip 8, slurry flows to the lip 9 through the slit 6 after entering the cavity 5 from the feed inlet 4, and the first gasket 3 ensures that the slurry flows out from the lip 9.
The bottom of first gasket 3 is equipped with flow balance piece 10, first gasket 3 with be fixed connection between the flow balance piece 10, flow balance piece 10 will cavity 5 divide into first minute chamber 11 and second minute chamber 12, flow balance piece 10 with there is clearance 13 bottom of cavity 5, flow balance piece 10 with there is breach 14 at the both ends of cavity 5, through clearance 13 with breach 14 realizes the circulation between first minute chamber 11 with the second minute chamber 12.
After the slurry enters the first sub-cavity 11 from the feed inlet 4, the slurry in the first sub-cavity 11 flows into the second sub-cavity 12 through the gap 13 and the notch 14, and then flows to the lip 9 through the slit 6.
The slurry in the first sub-chamber 11 flows from the middle part of the first sub-chamber 11 to the two ends of the first sub-chamber 11 and then flows into the second sub-chamber 12 from the notch 14, so that the amount of the slurry in the first sub-chamber 11 flowing into the second sub-chamber 12 from the gap 13 can be reduced, the pressure of the slurry in the first sub-chamber 11 flowing into the second sub-chamber 12 through the gap 13 is reduced, the speed of the slurry flowing into the second sub-chamber 12 through the gap 13 is further reduced, the slurry flowing into the two sides of the second sub-chamber 12 from the notch 14 is increased, the pressure of the slurry flowing into the lip 9 from the two sides of the second sub-chamber 12 through the slit 6 is increased, the speed of the slurry flowing into the lip 9 from the two sides of the second sub-chamber 12 through the slit 6 is increased, and the difference between the speed of the slurry flowing into the lip 9 from the two sides of the second sub-chamber 12 and the middle slurry flowing into the lip 9 through the slit 6 is reduced, and the thickness of the coating surface is the same as the thickness of the middle is realized. The working mode solves the problem that in the prior art, only one feeding hole enters a cavity for storing slurry from the middle of a die head, and the speeds of two sides and the middle of a coating are inconsistent in wide coating, so that the thickness of the coating layer is light at two sides and heavy at the middle.
When using slurries of different viscosities, the velocity of the slurry flowing from the middle of the first sub-chamber 11 to the two ends of the first sub-chamber 11 after flowing into the first sub-chamber 11 from the feed inlet 4 will vary with the viscosity of the slurry, i.e. the amount of slurry flowing into the second sub-chamber 12 from the gap 14 will vary with the viscosity of the slurry, which results in the velocity of slurry flowing from the two sides of the second sub-chamber 12 through the slit 6 to the lip 9 will vary with the viscosity of the slurry.
When slurries of different viscosities are used, the speed of the slurry in the first subchamber 11 flowing from the gap 13 to the second subchamber 12 will vary with the viscosity of the slurry, i.e. the amount of slurry in the first subchamber 11 flowing through the gap 13 to the second subchamber 12 will also vary with the viscosity of the slurry, which results in a speed of the slurry flowing from the intermediate slurry in the second subchamber 12 through the slit 6 to the lip 9 will vary with the viscosity of the slurry.
When the speeds of the slurry on both sides in the second subchamber 12 and the slurry in the middle flowing to the lip 9 through the slit 6 are different, the thickness of the coating surface on both sides and the thickness of the middle are different.
The flow balance block 10 is set to be three-section (see fig. 3, wherein 101 is a first section, 102 is a second section, and 103 is a third section), the height of the flow balance block 10 in any section can be adjusted, the width of the gap 13 between the flow balance block 10 and the cavity 5 in any section can be flexibly adjusted, and the amount of slurry flowing into the second sub-cavity 12 from the first sub-cavity 11 through the gap 13 is changed, namely, the speed of slurry flowing into the lip 9 from the middle slurry in the second sub-cavity 12 through the slit 6 is changed. The working mode solves the problem that the flow speed of the slurry cannot be controlled according to the viscosity of the slurry, so that the thickness of a coating surface of the slurry with different viscosities is uneven in the prior art.
Referring to fig. 4, in the first embodiment, the flow balance block 10 of each section is composed of a pressing block 15, a second gasket 16 and a partition plate 17, the second gasket 16 is detachably connected with the pressing block 15, the second gasket 16 is fixedly connected with the partition plate 17, and by replacing the second gasket 16 with different thickness, the gap 13 between the partition plate 17 and the bottom of the cavity 5 can be changed, so that the amount of slurry in the first sub-cavity 11 flowing into the second sub-cavity 12 from the gap 13 is changed, that is, the speed of slurry in the first sub-cavity 11 flowing into the second sub-cavity 12 from the gap 13 is changed.
When a slurry with low viscosity is used, the phenomenon that the thickness of the coating surface is heavy on both sides and light on the middle is easy to occur, namely, the slurry on both sides in the second subchamber 12 flows to the lip 9 through the slit 6 at a higher speed than the slurry on the middle flows to the lip 9 through the slit 6, the gap 13 between the baffle 17 and the bottom of the chamber 5 can be enlarged by using the thin second gasket 16, the amount of the slurry in the first subchamber 11 flowing into the second subchamber 12 from the gap 13 is increased, namely, the slurry in the first subchamber 11 flows to the second subchamber 12 through the gap 13 at a higher speed, and the slurry on both sides in the second subchamber 12 flows to the lip 9 through the slit 6 at a same speed as the slurry on the middle flows to the lip 9 through the slit 6.
When the slurry with high viscosity is used, the phenomenon that the slurry on both sides of the thickness of the coating layer is light and heavy in the middle is easy to occur, namely, the slurry on both sides in the second sub-cavity 12 flows to the lip 9 through the slit 6 at a slower speed than the slurry on the middle flows to the lip 9 through the slit 6, by using the thick second gasket 16, the gap 13 between the partition 17 and the bottom of the cavity 5 can be made smaller, the amount of the slurry in the first sub-cavity 11 flowing into the second sub-cavity 12 from the gap 13 is reduced, namely, the slurry in the first sub-cavity 11 flows to the second sub-cavity 12 through the gap 13 at a slower speed, and the slurry on both sides in the second sub-cavity 12 flows to the lip 9 through the slit 6 at a slower speed than the slurry on the middle flows to the lip 9 through the slit 6.
Referring to fig. 5-7, in the second embodiment, each flow balance block 10 is composed of a pressing block 15, an elastic gasket 18 and a partition plate 17, the pressing block 15 is fixedly connected with the elastic gasket 18, the elastic gasket 18 is fixedly connected with the partition plate 17, grooves 19 are formed in two ends of each partition plate 17 of each flow balance block 10, one side surface of each groove 19 is a rack surface 20, the other side surface of each groove 19 is a smooth surface 21, a gear 22 is arranged in each groove 19, teeth of the gear 22 are meshed with grooves of the rack surface 20, an interlocking matching relationship is formed between teeth of the gear 22 and grooves of the rack surface 20, the gear 22 can drive the partition plate 17 to move up and down, and the gears 22 are arranged at two ends of each partition plate 17 to prevent the unbalanced partition plate 17 from toppling.
The lower die 2 back plate is provided with a motor 23, the center of the motor 23 is provided with a rotating shaft 24, the lower die 2 back plate is fixedly connected with the motor 23 so as to prevent the motor 23 from rotating, the rotating shaft 24 rotates, the other end of the rotating shaft 24 connected with the motor 23 is connected with the gear 22, the rotating shaft 24 is fixedly connected with the gear 22, the rotating shaft 24 is perpendicular to the lower die 2 back plate, and each section of flow balance block 10 is controlled by two motors 23 to move up and down through the partition plate 17 of the flow balance block 10.
When the motor 23 is started, the rotation shaft 24 rotates, the rotation shaft 24 drives the gear 22 to rotate, the gear 22 and the rack surface 20 drive the partition 17 to move up and down, the elastic gasket 18 is made of elastic materials, the elastic gasket 18 automatically adjusts elastic change according to the up-and-down movement degree of the partition 17, and the top and the bottom of the groove 19 limit the up-and-down movement range of the partition 17, namely limit the adjustment range of the gap 13 between the flow balance block 10 and the cavity 5.
When the motor 23 rotates positively, the rotating shaft 24 drives the gear 22 to rotate positively, the gear 22 and the rack surface 20 enable the partition 17 to move upwards, the elastic gasket 18 is compressed, the gap 13 between the flow balance block 10 and the cavity 5 is enlarged, when the motor 23 rotates reversely, the rotating shaft 24 drives the gear 22 to rotate reversely, the gear 22 and the rack surface 20 enable the partition 17 to move downwards, the elastic gasket 18 stretches, and the gap 13 between the flow balance block 10 and the cavity 5 is reduced.
The upper die 1 is provided with a chip 25 and three laser sensors 26, the three laser sensors 26 are arranged according to the positions of the flow balance blocks 10 of each section, each section of coating surface corresponds to one section of the flow balance block 10 and one laser sensor 26, the flow balance block 10 is used for adjusting the gap 13 of the corresponding section, namely adjusting the thickness of the coating surface, and the laser sensors 26 are used for monitoring the thickness of the coating surface of the corresponding section.
The laser sensor 26 may emit a laser beam, the laser beam may reflect after passing through a coating layer, the laser sensor 26 receives the reflected beam, the laser sensor 26 measures a signal integral value of the reflected beam through an energy integration algorithm, so that the intensity of the reflected beam may be obtained, the chip 25 obtains the thickness of the coating layer by processing the intensity of the reflected beam, the stronger the intensity of the reflected beam, the thicker the coating layer, the weaker the intensity of the reflected beam, and the thinner the coating layer.
The chip 25 compares the thicknesses of the coating surfaces monitored by the plurality of laser sensors 26, when the thickness of the coating surface of a certain section is different from the thicknesses of the coating surfaces of other sections, the size of the gap 13 is controlled by adjusting the gap 13 between the flow balance block 10 of the certain section and the cavity 5, and the chip 25 controls the forward and backward rotation of the two motors 23 of the flow balance block 10 of the certain section. The working mode solves the problem that the thicknesses of the two sides and the middle of the coating surface cannot be monitored in real time and the automatic control of the flow balance weight 10 cannot be realized so that the thicknesses of the two sides and the middle of the coating surface are uniform in the prior art.
Referring to fig. 8, the operation flow of the motor 23 includes step S1: a plurality of the laser sensors 26 emit laser beams that are reflected at the coating level, producing reflected beams;
step S2: the plurality of laser sensors 26 receive the reflected light beams, the laser sensors 26 measure signal integral values of the reflected light beams through an energy integration algorithm to obtain intensities of the reflected light beams, and the chips 25 process the intensities of the reflected light beams to obtain thickness of a coating surface of each section;
step S3: the chip 25 obtains a target segment different from the coating surface thickness of the other segments by comparing the coating surface thickness of each segment;
step S4: judging whether the coating surface of the target section is thicker than the coating surfaces of the other sections;
step S5: and if the coating surface of the target section is thicker than the coating surfaces of the other sections, controlling the motor 23 of the target section to rotate reversely, so that the gap 13 between the flow balance block 10 and the bottom of the cavity 5 is reduced, and if the coating surface of the target section is thinner than the coating surfaces of the other sections, controlling the motor 23 of the target section to rotate forwardly, so that the gap 13 between the flow balance block 10 and the bottom of the cavity 5 is enlarged.
The thickness measurement technique in the step S2 may also be implemented by using an existing laser thickness measurement sensor.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and its embodiments have been described above with no limitation, and the embodiments of the present invention are shown in the drawings, and the actual content is not limited thereto, so that those skilled in the art, without departing from the spirit of the invention, should not creatively design similar structural means and examples to the technical solutions to fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a coating die head structure that cavity changed flow direction, its characterized in that includes upper mould (1) and lower mould (2), be equipped with first gasket (3) between upper mould (1) and lower mould (2), lower mould (2) are equipped with feed inlet (4) and cavity (5), feed inlet (4) with cavity (5) circulation each other, feed inlet (4) are used for supplying coating slurry to get into cavity (5), first gasket (3) are "[" shape, the opening part of first gasket (3) makes form slit (6) between upper mould (1) and lower mould (2), cavity (5) are linked together with slit (6) for coating slurry circulation;
an upper lip (7) is arranged on the front surface of the upper die (1), a lower lip (8) corresponding to the upper lip (7) is arranged on the front surface of the lower die (2), a lip (9) discharging from the slit (6) is formed among the first gasket (3), the upper lip (7) and the lower lip (8), slurry flows to the lip (9) through the slit (6) after entering the cavity (5) from the feed inlet (4), and the first gasket (3) ensures that the slurry flows out from the lip (9);
the bottom of first gasket (3) is equipped with flow balance piece (10), flow balance piece (10) will cavity (5) divide into first minute chamber (11) and second minute chamber (12), first gasket (3) with be fixed connection between flow balance piece (10), flow balance piece (10) with clearance (13) exist in the bottom of cavity (5), flow balance piece (10) with gap (14) exist at the both ends of cavity (5), through clearance (13) with gap (14) are realized first minute chamber (11) with circulation between second minute chamber (12).
2. A cavity flow-altering coating die structure as in claim 1, wherein said flow balancing mass (10) is multi-segmented.
3. The coating die head structure with a flow direction changed according to claim 2, wherein in the first embodiment, each flow balance block (10) is composed of a pressing block (15), a second gasket (16) and a partition plate (17), the second gasket (16) is detachably connected with the pressing block (15), the second gasket (16) is detachably connected with the partition plate (17), and the pressing block (15) is connected with the partition plate (17) through the second gasket (16).
4. The coating die head structure with the flow direction changed according to claim 2, characterized in that in the second embodiment, the flow balance block (10) is set to be multiple sections, each section of the flow balance block (10) is composed of a pressing block (15), an elastic gasket (18) and a partition plate (17), the pressing block (15) is fixedly connected with the elastic gasket (18), and the elastic gasket (18) is fixedly connected with the partition plate (17);
a groove (19) is formed in the partition plate (17) of each flow balance block (10), one side surface of the groove (19) is a rack surface (20), the other side surface of the groove (19) is a smooth surface (21), a gear (22) is arranged in the groove (19), teeth of the gear (22) are meshed with grooves of the rack surface (20), and an interlocking matching relationship is formed between the teeth of the gear (22) and the grooves of the rack surface (20);
the lower die (2) backplate is equipped with motor (23), motor (23) center is equipped with axis of rotation (24), lower die (2) backplate with motor (23) are fixed connection, axis of rotation (24) with the other end that motor (23) are connected with gear (22), axis of rotation (24) with gear (22) are fixed connection, axis of rotation (24) perpendicular to lower die (2) backplate.
5. A cavity flow direction changing coating die structure according to claim 4, wherein said grooves (19) are provided at both ends in said partition (17) of said flow balance block (10) of each segment, and said gears (22) are provided at both ends in said partition (17) of said flow balance block (10) of each segment.
6. A cavity flow direction changing coating die structure according to claim 4, wherein said elastic pad (18) is made of an elastic material, said elastic pad (18) automatically adjusts an elastic change according to the degree of up-and-down movement of said partition plate (17), and the top and bottom of said groove (19) limit the range of up-and-down movement of said partition plate (17).
7. The die structure according to claim 4, wherein the upper die (1) is provided with a chip (25) and a plurality of laser sensors (26), the plurality of laser sensors (26) are arranged according to the position of the flow balance block (10) of each section, and each section of coating surface corresponds to one section of the flow balance block (10) and one laser sensor (26).
8. A cavity flow-altering coating die structure as in claim 7, wherein said laser sensor (26) emits a laser beam, said laser beam being reflected after passing through a coating surface, said laser sensor (26) receiving the reflected beam, said laser sensor (26) measuring a signal integral value of said reflected beam by an energy integration algorithm to obtain an intensity of said reflected beam;
the chip (25) obtains a thickness of a coating layer by processing the intensity of the reflected light beam, the stronger the intensity of the reflected light beam, the thicker the coating layer, the weaker the intensity of the reflected light beam, and the thinner the coating layer.
9. A cavity-altering flow-direction coating die structure according to claim 7, characterized in that the workflow of the motor (23) comprises the steps S1: a plurality of said laser sensors (26) emitting laser beams, said laser beams being reflected at the coating level, resulting in reflected beams;
step S2: the laser sensors (26) respectively receive the reflected light beams, the laser sensors (26) calculate signal integral values of the reflected light beams through an energy integration algorithm to obtain intensities of the reflected light beams, and the chip (25) processes the intensities of the reflected light beams to obtain the thickness of a coating surface of each section;
step S3: the chip (25) obtains a target section different from the coating surface thickness of other sections by comparing the coating surface thickness of each section;
step S4: judging whether the coating surface of the target section is thicker than the coating surfaces of the other sections;
step S5: and if the coating surface of the target section is thicker than the coating surfaces of other sections, controlling the motor (23) corresponding to the target section to rotate reversely, so that the gap (13) between the flow balance block (10) and the bottom of the cavity (5) is reduced, and if the coating surface of the target section is thinner than the coating surfaces of other sections, controlling the motor (23) corresponding to the target section to rotate forwardly, so that the gap (13) between the flow balance block (10) and the bottom of the cavity (5) is enlarged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311297479.5A CN117324195A (en) | 2023-10-08 | 2023-10-08 | Coating die head structure with flow direction changed by cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311297479.5A CN117324195A (en) | 2023-10-08 | 2023-10-08 | Coating die head structure with flow direction changed by cavity |
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| CN117324195A true CN117324195A (en) | 2024-01-02 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050126589A1 (en) * | 2003-06-25 | 2005-06-16 | Shigenari Horie | Cleaning device of slit nozzle for coating and coating apparatus |
| US20060201630A1 (en) * | 2004-12-03 | 2006-09-14 | Nordson Corporation | Rotary application head and labelling installation for application of labels |
| CN108686894A (en) * | 2018-08-17 | 2018-10-23 | 江西鸿格科技有限公司 | The precise extruding mold head of coating machine |
| CN109939897A (en) * | 2019-04-30 | 2019-06-28 | 江西鸿格科技有限公司 | The precise extruding mold head of coating machine |
| CN213102968U (en) * | 2020-07-27 | 2021-05-04 | 惠州市赢合科技有限公司 | Coating die head capable of adjusting cavity pressure in vertical direction |
| CN214917719U (en) * | 2020-10-10 | 2021-11-30 | 上海卡耐新能源有限公司 | Coating mechanism and battery coating equipment |
| CN215313639U (en) * | 2021-06-23 | 2021-12-28 | 宁德中能电子设备有限公司 | Semicircular layering mechanism for improving coating surface density |
| CN216880143U (en) * | 2022-01-25 | 2022-07-05 | 深圳市曼恩斯特科技股份有限公司 | Coating die head and coating device |
| CN217989837U (en) * | 2022-07-14 | 2022-12-09 | 深圳市曼恩斯特科技股份有限公司 | Coating die head and coating machine |
| KR20230078488A (en) * | 2021-11-26 | 2023-06-02 | 주식회사 엘지에너지솔루션 | Slot die coater |
-
2023
- 2023-10-08 CN CN202311297479.5A patent/CN117324195A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050126589A1 (en) * | 2003-06-25 | 2005-06-16 | Shigenari Horie | Cleaning device of slit nozzle for coating and coating apparatus |
| US20060201630A1 (en) * | 2004-12-03 | 2006-09-14 | Nordson Corporation | Rotary application head and labelling installation for application of labels |
| CN108686894A (en) * | 2018-08-17 | 2018-10-23 | 江西鸿格科技有限公司 | The precise extruding mold head of coating machine |
| CN109939897A (en) * | 2019-04-30 | 2019-06-28 | 江西鸿格科技有限公司 | The precise extruding mold head of coating machine |
| CN213102968U (en) * | 2020-07-27 | 2021-05-04 | 惠州市赢合科技有限公司 | Coating die head capable of adjusting cavity pressure in vertical direction |
| CN214917719U (en) * | 2020-10-10 | 2021-11-30 | 上海卡耐新能源有限公司 | Coating mechanism and battery coating equipment |
| CN215313639U (en) * | 2021-06-23 | 2021-12-28 | 宁德中能电子设备有限公司 | Semicircular layering mechanism for improving coating surface density |
| KR20230078488A (en) * | 2021-11-26 | 2023-06-02 | 주식회사 엘지에너지솔루션 | Slot die coater |
| CN216880143U (en) * | 2022-01-25 | 2022-07-05 | 深圳市曼恩斯特科技股份有限公司 | Coating die head and coating device |
| CN217989837U (en) * | 2022-07-14 | 2022-12-09 | 深圳市曼恩斯特科技股份有限公司 | Coating die head and coating machine |
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