CN115574579A - Air knife structure and copper foil anti-oxidation device - Google Patents
Air knife structure and copper foil anti-oxidation device Download PDFInfo
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- CN115574579A CN115574579A CN202211101223.8A CN202211101223A CN115574579A CN 115574579 A CN115574579 A CN 115574579A CN 202211101223 A CN202211101223 A CN 202211101223A CN 115574579 A CN115574579 A CN 115574579A
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- oxidation
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000011889 copper foil Substances 0.000 title claims abstract description 73
- 230000003064 anti-oxidating effect Effects 0.000 title claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 238000007664 blowing Methods 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 20
- 238000005192 partition Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 230000003139 buffering effect Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 210000005056 cell body Anatomy 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 3
- 238000001035 drying Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 13
- 239000011888 foil Substances 0.000 abstract description 6
- 238000002845 discoloration Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000002161 passivation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrolytic Production Of Metals (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses an air knife structure and a copper foil anti-oxidation device, comprising: an anti-oxidation tank (1), a liquid spraying pipe component (2), an anode plate component (3), a roller system transmission component (4) and a pair of air knife structures according to any one of claims 1 to 4, wherein the liquid spraying pipe component, the anode plate component and the roller system transmission component are arranged in the anti-oxidation tank, and the pair of air knife structures are positioned above the anti-oxidation tank. The invention has the advantages that an asymmetric flow dividing structure is adopted, the first air blowing groove blows liquid and dries quickly, the second air blowing groove blows and dries slowly, the drying effect is good, air blowing and drying are integrated, and the size of the whole structure of the foil forming machine is reduced; the copper foil and the air knife almost vertically penetrate through the copper foil, so that the influence of gravity is eliminated, the air blowing balance is good, and the copper foil shake is reduced; the distance between the anode plate and the copper foil is quickly adjustable, so that the anti-oxidation requirements of the copper foil under different thicknesses and different speeds can be met; after the structure is subjected to anti-oxidation treatment, the copper foil is baked at 150 ℃ for 30min without oxidation discoloration.
Description
Technical Field
The invention relates to the technical field of copper foil production equipment, in particular to an air knife structure and an electrolytic copper foil anti-oxidation device.
Background
The electrolytic copper foil is an important material for manufacturing Copper Clad Laminate (CCL), printed Circuit Board (PCB) and lithium ion battery. In the current high-speed development of the electronic information industry, the electrolytic copper foil is called a "neural network" for signal and power transmission and communication of electronic products.
The production of the electrolytic copper foil is a process combining thousands of tiny small links, and the anti-oxidation treatment of the qualified copper foil is a very critical process in all the process procedures. The method directly determines the performance of the copper foil on the terminal equipment, and more directly influences the performance and quality of the terminal equipment. In the copper foil production process, after a crude foil machine is stripped by a cathode roller, the semi-finished copper foil is subjected to anti-oxidation liquid spraying, passivation, liquid squeezing and hot air drying in sequence, and then the finished copper foil with the anti-oxidation effect can be obtained. In this process, a series of technical problems need to be solved in order to obtain a qualified product.
In the prior art, the anti-oxidation process of the electrolytic copper foil is to convey the electrolytic copper foil to an anti-oxidation tank, and perform anti-oxidation treatment on the electrolytic copper foil in the anti-oxidation tank, but the problems of short anti-oxidation time, poor anti-oxidation effect and the like are often existed. Meanwhile, the demand of customers on products is diversified, the copper foil with different thicknesses needs to be adjusted, the delivery period of the copper foil is short, and the corresponding equipment debugging time is reduced and is not slow at all when the products are replaced or the continuous production is carried out, so that an anti-oxidation device capable of realizing quick adjustment is urgently needed.
The anti-oxidation process needs to use an air knife to carry out hot air drying operation on the copper foil, the existing air knife structure cannot adjust the air speed, and the drying effect is poor.
Chinese utility model patent publication No. CN207610521U discloses a novel air knife air supply arrangement, including anti-oxidation groove, guide roll, crowded liquid roller and coiling mechanism, the guide roll is located the copper foil output end department of handling through anti-oxidation groove, and crowded liquid roller next-door neighbour sets up in the upper portion of guide roll, still is equipped with air supply arrangement, air supply arrangement includes air heater, air knife and hot-blast main, and the air knife is located between crowded liquid roller and the coiling mechanism, and air supply arrangement heats the copper foil surface through the air knife by the hot-blast through the hot-blast main that the air heater produced, and the distance between anode plate and the copper foil can't be adjusted in the anti-oxidation groove of this patent, and the hot-blast also can't be adjusted that the air knife blew off.
The chinese utility model patent publication No. CN205803570U discloses an air knife device for a photovoltaic solder strip, which comprises an air knife holder, an air knife group and a high-pressure air source, wherein the air knife group is formed by combining two air knives; the air knife comprises an air knife body, an air inlet and an air duct; the air knife body consists of a semicircular section, a straight section and a conical section; the straight section of the air knife body is provided with an air inlet, and the air inlet is connected with a high-pressure air source through an air pipe; the air duct is communicated with the air inlet, penetrates through the straight section and the conical section of the air knife body, and an air outlet of the air duct is positioned at the bottom of the conical section; the air duct is a broken line type air duct. The high-pressure airflow blown out by the patent is easy to damage the surface of the copper foil.
Chinese utility model patent publication No. CN213067009U discloses a double air knife device, which comprises an air knife holder, a first air knife plate, a second air knife plate and a third air knife plate arranged on the air knife holder, and a first air inlet portion and a second air inlet portion arranged at both ends of the air knife holder, wherein the air knife holder is formed with an air inlet duct, a first air duct is formed between the first air knife plate and the second air knife plate, the first air duct has a first elongated air outlet, a second air duct is formed between the second air knife plate and the third air knife plate, the second air duct has a second elongated air outlet, the first air inlet portion is provided with a first air inlet, and the second air inlet portion is provided with a second air inlet; the first air knife board or the second air knife board protrudes a first turbulence part into the first air duct, and the second air knife board or the third air knife board protrudes a second turbulence part into the second air duct. Although this patent adopts two wind channels and two air outlets to prevent that the moisture that a air outlet brought up from spattering to through dry glass surface in the drying process, these two wind channels are the symmetric distribution, and the velocity of flow of wind is the same in two wind channels, though the air current is stable, nevertheless can't guarantee drying effect because the time of copper foil through the air outlet is very short.
Disclosure of Invention
The invention aims to solve the technical problems that an air knife structure in a copper foil anti-oxidation process is poor in drying effect, and the structure of an anti-oxidation groove cannot be adjusted in a fixed mode, so that the air knife structure and a copper foil anti-oxidation device are provided.
The technical scheme of the invention is as follows: a wind knife structure comprises a shell and a curved cavity body located in the shell, wherein a flow dividing structure for dividing the curved cavity body into two parts is arranged in the curved cavity body, the flow dividing structure comprises a partition plate, one end of the partition plate is connected with the bottom of the curved cavity body, the other end of the partition plate is externally provided with a special-shaped structure matched with the outline of the curved cavity body in an expanding mode, a first air duct and a second air duct are formed between the special-shaped structure and the cavity body, arc-shaped buffering portions which shrink inwards are arranged on two sides of the middle of the special-shaped structure, a first wind blowing groove and a second wind blowing groove which are communicated with the outside of the shell are formed between the tail end of the special-shaped structure and the cavity body, the parts of the special-shaped structure, close to the first wind blowing groove and the second wind blowing groove, shrink to form a first buffering area and a second buffering area respectively, the area of the first buffering area is smaller than the area of the second buffering area, and the width of the first wind blowing groove is smaller than the width of the second wind blowing groove.
The improvement of the scheme is that an air speed sensor is arranged in the first buffer area, and a temperature sensor is arranged in the second buffer area.
In the scheme, the special-shaped structure is in a downward inclined posture.
In the scheme, the width of the first blowing groove is 0.2 mm-0.5 mm, and the width of the second blowing groove is 0.8 mm-1.5 mm.
In the scheme, the shell is made of aluminum alloy, and the outer surface of the shell is coated with a heat-insulating material.
Copper foil anti oxidation device includes: the device comprises an anti-oxidation groove, a liquid spraying pipe assembly, an anode plate assembly, a roller system transmission assembly and a pair of air knife structures, wherein the liquid spraying pipe assembly, the anode plate assembly and the roller system transmission assembly are arranged in the anti-oxidation groove, and the pair of air knife structures are positioned above the anti-oxidation groove.
In the scheme, the anti-oxidation groove comprises a groove body, the liquid spraying pipe assembly and the roller system transmission assembly are installed between two side edges of the groove body, an overflow plate located behind the roller system transmission assembly is arranged in the groove body, a liquid discharge port located in front of the overflow plate and a return pipe located behind the overflow plate are arranged at the bottom of the groove body, and a front cover plate, a middle cover plate and a rear cover plate are installed above the groove body.
In the above scheme the spray pipe subassembly includes the spray pipe, the valve is passed through to the one end of spray pipe and is linked together with the external world, and other end seal installs the end cap, the rigid coupling has fan-shaped regulating plate on the spray pipe, the arc wall has been seted up on the fan-shaped regulating plate, the arc wall passes through the screw and is connected with the cell body.
In the above scheme, the anode plate assembly comprises a lower anode plate and an upper anode plate, the lower anode plate comprises a horizontal plate, two ends of the horizontal plate are respectively and fixedly connected with a first vertical plate, a waist-shaped groove which is vertically distributed is formed in the first vertical plate, the upper anode plate comprises a horizontal plate and second vertical plates which are positioned at two ends of the horizontal plate, and the second vertical plates are connected with the waist-shaped groove in a matched mode through screws.
In the above scheme, roller system drive assembly includes conductive roller and auxiliary roller, the conductive roller is installed on first bearing frame, action wheel, speed reducer and servo motor are installed to the one end of conductive roller, the auxiliary roller is installed on the second bearing frame, the one end of auxiliary roller is installed from the driving wheel, it is connected with the action wheel transmission through the belt to follow the driving wheel.
The improvement of above-mentioned scheme is still including crowded liquid roller subassembly, crowded liquid roller subassembly is including the crowded liquid roller that is located roller system drive assembly rear, crowded liquid roller both ends are installed on third bearing frame, third bearing frame outside rigid coupling has the slider, slider sliding connection has horizontal guide rail, horizontal guide rail outside rigid coupling has the mounting panel, the cylinder is equipped with on the mounting panel, the ejector pad is equipped with on the piston rod of cylinder, the ejector pad is just right with third bearing frame's side.
The invention has the beneficial effects that an asymmetric flow dividing structure is adopted, the first air blowing groove blows liquid and dries quickly, the second air blowing groove blows dry slowly, the drying effect is good, the air blowing and the drying are integrated, and the size of the whole structure of the crude foil machine is reduced; the copper foil and the air knife almost vertically penetrate through the copper foil, so that the influence of gravity is eliminated, the air blowing balance is good, and the vibration of the copper foil is reduced; the angle of the liquid spraying pipe is adjustable, the liquid spraying direction can be adjusted during production, the flow rate is adjustable, and the anti-oxidation effect can be ensured; the distance between the anode plate and the copper foil is quickly adjustable, so that the anti-oxidation requirements of the copper foil under different thicknesses and different speeds can be met; after the structure is subjected to anti-oxidation treatment, the copper foil is baked at 150 ℃ for 30min without oxidation discoloration.
Drawings
FIG. 1 is a schematic view of an apparatus for preventing oxidation of an electrolytic copper foil;
FIG. 2 is a schematic view of the structure of an oxidation preventing tank;
FIG. 3 is a schematic structural view of a liquid spray tube assembly;
fig. 4 is a schematic structural view of an oxidation-preventing anode plate assembly;
FIG. 5 is a schematic structural view of a roller train drive assembly;
FIG. 6 is a schematic structural view of a wringing roller assembly;
FIG. 7 is a sectional view of the structure of the hot air knife;
FIG. 8 is a sectional view of a preferred embodiment of the hot air duct;
in the figure, 1, an anti-oxidation groove, 11, a groove body, 12, an overflow plate, 13, a front cover plate, 14, a middle cover plate, 15, a rear cover plate, 16, a waste liquid pipe, 17, a return pipe, 2, a liquid spraying pipe assembly, 21, a liquid spraying pipe, 22, a sector adjusting plate, 23, a plug, 24, a valve, 3, an anode plate assembly, 31, a lower anode plate, 32, an upper anode plate, 33, a screw, 4, a roller system transmission assembly, 41, a conductive roller, 42, an auxiliary roller, 43, a first bearing seat, 44, a second bearing seat, 45, a driven wheel, 46, a belt, 47 and a speed reducer, 48, a servo motor, 5, a liquid squeezing roller assembly, 51, a liquid squeezing roller, 52, a third bearing seat, 53, a sliding block, 54, a guide rail, 55, a mounting plate, 56, an air cylinder, 57, a pushing block, 58, rubber, 6, an air knife, 61, a shell, 62, a curved cavity, 63, a partition plate, 64, a first air duct, 65, a second air duct, 66, a special-shaped structure, 67, a first buffer area, 68, a second buffer area, 69, a first air blowing groove, 610, a second air blowing groove, 611, an air speed sensor, 612, a temperature sensor, 7 and copper foil.
Detailed Description
The technical solution of the present invention is clearly and completely described below with reference to the following embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments based on the embodiments in the present invention, without any inventive work, will be apparent to those skilled in the art from the following description.
As shown in fig. 1, the electrolytic copper foil oxidation preventing device comprises an oxidation preventing tank 1, a liquid spraying pipe assembly 2 is arranged at a side hole of the oxidation preventing tank, an anode plate assembly 3 is arranged at the middle part of the tank, a roller system transmission assembly 4 is arranged in the tank, a liquid squeezing roller assembly 5 is closely arranged behind the roller system transmission assembly, copper foil upwards passes through symmetrically arranged air knives 6, the copper foil 7 is stripped by a cathode roller and then enters the oxidation preventing tank, the copper foil horizontally passes through the anode plate and passes through a roller system transmission assembly which is arranged in the oxidation preventing tank and used for transmitting the copper foil, the roller system transmission assembly is slightly immersed in oxidation preventing liquid, the copper foil bypasses the roller system transmission assembly and is transmitted to the air knives, the roller system transmission assembly comprises a plurality of transmission rollers, and the copper foil is approximately vertically and upwards transmitted to the air knives.
And the electrolytic copper foil is conveyed to the anti-oxidation tank and then conveyed by a roller system transmission assembly in the anti-oxidation tank, and the electrolytic copper foil is conveyed out of the anti-oxidation tank to an air knife drying process after bypassing the roller system transmission assembly. The electrolytic copper foil is conveyed in the anti-oxidation tank through the roller system transmission assembly, so that the anti-oxidation time of the electrolytic copper foil in the anti-oxidation tank is prolonged, and the anti-oxidation performance of the electrolytic copper foil is improved.
As shown in fig. 2, preferably, the anti-oxidation groove is formed by welding transparent plastics, a groove body 11 of the anti-oxidation groove is provided with a roller system abdicating groove and a liquid spraying pipe mounting hole, an overflow partition plate 12 is arranged on the rear side of the groove body, a row of uniformly distributed overflow holes are formed in the overflow partition plate, the bottom of the groove body is formed by splicing four plates, a waste liquid pipe 16 is arranged at a liquid drainage port, the waste liquid pipe is the lowest position of the liquid filling groove, a circulation port is formed in the rear of the overflow partition plate, a return pipe 17 for preventing oxidation liquid is arranged below the overflow partition plate, the anti-oxidation groove comprises a front cover plate 13, a middle cover plate 14 and a rear cover plate 15, the three cover plates are provided with mounting and dismounting handles, the bottom welding baffle is limited, and the anti-oxidation groove is convenient to maintain, take and place by adopting a snap-in assembly.
As shown in fig. 3, preferably, the liquid spraying pipe 21 of the liquid spraying pipe assembly is made of plastic, a plurality of circular holes with the diameter of 1.5-3mm are uniformly distributed on the liquid spraying pipe assembly, the liquid spraying covering surface of the liquid spraying pipe assembly exceeds the width of copper foil, the tail end of the liquid spraying pipe assembly is welded with a fan-shaped adjusting plate 22 and a sealing plug 23, an arc-shaped groove is formed in the fan-shaped adjusting plate and is fixed on the side surface of an anti-oxidation groove through screws so as to adjust the liquid spraying angle to meet the passivation requirement of the copper foil, and a valve 24 is arranged on the liquid inlet side of the liquid spraying pipe assembly and is preferably a manual ball valve to control the liquid inlet flow under different process parameters.
As shown in fig. 4, the anode plate assembly includes a lower anode plate 31 and an upper anode plate 32, the lower anode plate includes a horizontal plate, two ends of the horizontal plate are respectively and fixedly connected with a first vertical plate, the first vertical plate is provided with a waist-shaped groove vertically distributed, the upper anode plate includes a horizontal plate and a second vertical plate located at two ends of the horizontal plate, and the second vertical plate is connected with the waist-shaped groove through a screw. The upper anode plate moves in the range of the waist-shaped groove of the lower anode plate, the distance between the anode plate and the foil surface can be quickly adjusted, and the upper anode plate is screwed by a screw 33 after being adjusted to a proper distance according to the process requirements and the product requirements.
As shown in fig. 5, the roller system transmission assembly comprises two or more guide rollers, a conductive roller 41 is fixed by a first bearing seat 43, a driving wheel 44 and a speed reducer 47 are installed at one end of the conductive roller, the speed reducer is connected with a servo motor 48, a secondary roller 42 is fixed by a second bearing seat 44, a driven wheel 45 is installed at one end of the conductive roller, and the belt wheels are connected and driven by a belt 46.
As shown in fig. 6, in the liquid squeezing roller assembly, a liquid squeezing roller 51 is roll-surface-coated with rubber, the thickness of the rubber is 10-20mm, and the shore a is 40-55 degrees, third bearing seats 52 are mounted at two ends of the liquid squeezing roller, four threaded holes are formed in the bearing seats and are connected with a sliding block 53, the sliding block is sleeved on a guide rail 54 and moves horizontally, the guide rail is fixed on a mounting plate 55, a stroke-adjustable air cylinder 56 is further mounted on the mounting plate, a piston rod at the rear end of the air cylinder is provided with a nut for adjusting the stroke to adapt to different mounting positions, a push block 57 is mounted on a piston rod at the front end of the air cylinder, a rubber sheet 58 is mounted on the push block in a bonding or screw connection mode, the hardness of the rubber sheet is lower than the rubber coating hardness of the liquid squeezing roller, and the air cylinder is provided with a pressure regulating valve. The push block is opposite to the side face of the third bearing seat.
The two air knives are symmetrically arranged on two sides of the copper foil, and air blowing openings of the two air knives are slightly downward. The air knife has an internal structure as shown in fig. 7, a shell 61 made of aluminum alloy, an outer surface coated with heat insulating material, and a curved cavity in the shell, wherein a flow dividing structure for dividing the curved cavity into two parts is arranged in the curved cavity, the curved cavity 62 is divided into two asymmetric parts, the flow dividing structure comprises a partition plate 63 with one end connected with the bottom of the curved cavity, the other end of the partition plate is externally expanded with a special-shaped structure matched with the profile of the curved cavity, two sides of the middle part of the special-shaped structure are provided with arc-shaped buffer parts which shrink inwards, a first air duct 64 and a second air duct 65 are formed between the special-shaped structure and the cavity, the first air duct and the second air duct are bent in path, a first air blowing groove 69 and a second air blowing groove 610 which are communicated with the outside of the shell are formed between the tail end of the special-shaped structure and the cavity, the part of the special-shaped structure, which is close to the first air blowing groove and the second air blowing groove, contracts to form a first buffer area 67 and a second buffer area 68 respectively, the first buffer area 67 is connected with the first air blowing groove 69, the area of the first buffer area is smaller than that of a semicircle, the second buffer area 68 is connected with the second air blowing groove 610, the area of the second buffer area is larger than that of the semicircle, the step of the air outlet side of the second buffer area is slightly higher than that of the semicircle, the width of the first air blowing groove is 0.2-0.5mm, and the width of the second air blowing groove is 0.8-1.5mm.
Hot air blown in by the hot air blower respectively enters the two chambers of the curved cavity separated by the partition plate and is blown out along the first air channel and the second air channel, and in order to adjust parameters of the hot air blower in real time, thereby achieving the drying effect and reducing the damage to the surface of the copper foil, as shown in fig. 8, the invention has the preferred embodiment that an air speed sensor is arranged in the first buffer area, and a temperature sensor is arranged in the second buffer area. The air speed sensor and the temperature sensor are in signal connection with the air heater, the air speed in the first air channel and the temperature in the second air channel can be monitored in real time through the air speed sensor and the temperature sensor, the air speed and the temperature can meet the requirements, and therefore the drying effect is achieved, and the damage to the surface of the copper foil is reduced.
The invention has the following characteristics:
1. the copper foil horizontally passes through the anti-oxidation tank, the soaking span is large, the passivation time is long at the same speed, and the effect is better;
2. the size of the anode slot in the vertical direction is reduced by more than 400mm, so that foil threading and inspection in production and replacement and overhaul of equipment are facilitated;
3. the anode tank body is made of transparent materials, so that the running condition can be observed, the sealing cover is convenient to take and place, and the operation is time-saving and labor-saving;
4. the anti-oxidation waste liquid is discharged, and the waste slag at the bottom of the anti-oxidation trough is conveniently and thoroughly cleaned;
5. the anti-oxidation backflow mode can effectively improve the circulation speed of the anti-oxidation liquid and ensure the ion concentration;
6. the angle of the liquid spraying pipe is adjustable through a fan-shaped adjusting plate, the liquid spraying direction can be adjusted during production, the flow is adjustable, and the anti-oxidation effect can be ensured;
7. the distance between the anode plate and the copper foil is quickly adjustable, so that the anti-oxidation requirement of the copper foil under different thicknesses and different speeds can be met;
8. after the structure anti-oxidation treatment, the copper foil is baked at 150 ℃ for 30min without oxidation discoloration;
9. the transmission roller system does not need to be completely immersed in anti-oxidation liquid, shaft head sealing is omitted, and cost and maintenance workload are greatly reduced;
10. the roller systems are driven by a belt, and the auxiliary roller becomes a driving force, so that the influence of the original driven roller on the copper foil is eliminated;
11. the liquid squeezing roller is horizontally installed, so that the installation difficulty is reduced, and the influence of the self weight of the roller on the copper foil is eliminated;
12. the constant pressure adjustment of the liquid squeezing roller is more timely and reliable than manual adjustment, so that the labor is saved, and automatic adjustment is realized;
13. the copper foil and the air knife almost vertically penetrate through the copper foil, so that the influence of gravity is eliminated, the air blowing balance is good, and the copper foil shake is reduced;
14. the double-groove air knife has the advantages that the first air blowing groove blows liquid and dries quickly, the second air blowing groove blows dry slowly, and the drying effect is good;
15. the blowing and drying are integrated, so that the size of the whole structure of the foil forming machine is reduced.
Claims (10)
1. The air knife structure is characterized by comprising a shell and a curved cavity (62) positioned in the shell, wherein a flow dividing structure for dividing the curved cavity into two parts is arranged in the curved cavity, the flow dividing structure comprises a partition plate (63) with one end connected with the bottom of the curved cavity, the other end of the partition plate is externally expanded with a special-shaped structure (66) matched with the outline of the curved cavity, a first air duct (64) and a second air duct (65) are formed between the special-shaped structure and the cavity, arc-shaped buffering parts which contract inwards are arranged on two sides of the middle part of the special-shaped structure, a first air blowing groove (69) and a second air blowing groove (610) which are communicated with the outside of the shell are formed between the tail end of the special-shaped structure and the cavity, parts of the special-shaped structure, which are close to the first air blowing groove and the second air blowing groove, are contracted to form a first buffering area (67) and a second buffering area (68) respectively, the area of the first buffering area is smaller than the area of the second buffering area, and the width of the first air blowing groove is smaller than the width of the second air blowing groove.
2. The air knife structure according to claim 1, characterized in that a wind speed sensor (611) is arranged in the first buffer area, and a temperature sensor (612) is arranged in the second buffer area.
3. The air knife structure of claim 1, wherein the shaped structure is in a downwardly inclined posture.
4. The air knife structure of claim 1, wherein the first air blowing grooves have a width of 0.2 mm to 0.5mm, and the second air blowing grooves have a width of 0.8 mm to 1.5mm.
5. Copper foil anti oxidation device, characterized by: the method comprises the following steps: the oxidation prevention tank (1), the liquid spraying pipe assembly (2), the anode plate assembly (3), the roller system transmission assembly (4) and a pair of air knife structures according to any one of claims 1 to 4, wherein the liquid spraying pipe assembly, the anode plate assembly and the roller system transmission assembly are arranged in the oxidation prevention tank, and the pair of air knife structures are positioned above the oxidation prevention tank.
6. The copper foil oxidation preventing device of claim 5, wherein: the anti-oxidation groove comprises a groove body (11), the liquid spraying pipe assembly and the roller system transmission assembly are installed between two side edges of the groove body, an overflow plate (12) located behind the roller system transmission assembly is arranged in the groove body, a waste liquid pipe (16) located in front of the overflow plate and a return pipe (17) located behind the overflow plate are arranged at the bottom of the groove body, and a front cover plate (13), a middle cover plate (14) and a rear cover plate (15) are installed above the groove body.
7. The copper foil oxidation preventing device of claim 5, wherein: the spray pipe subassembly includes spray pipe (21), valve (24) and external intercommunication are passed through to spray pipe's one end, and other end seal installs end cap (23), the rigid coupling has fan-shaped regulating plate (22) on the spray pipe, the arc wall has been seted up on the fan-shaped regulating plate, the arc wall passes through the screw and is connected with the cell body.
8. The copper foil oxidation preventing device of claim 5, wherein: the anode plate assembly comprises a lower anode plate (31) and an upper anode plate (32), the lower anode plate comprises a horizontal plate, two ends of the horizontal plate are fixedly connected with first vertical plates respectively, waist-shaped grooves which are vertically distributed are formed in the first vertical plates, the upper anode plate comprises a horizontal plate and second vertical plates which are located at two ends of the horizontal plate, and the second vertical plates are connected with the waist-shaped grooves in a matched mode through screws.
9. The copper foil oxidation preventing device of claim 5, wherein: roller is drive assembly includes conductive roller (41) and auxiliary roller (42), the conductive roller is installed on first bearing frame (43), action wheel, speed reducer (47) and servo motor (48) are installed to the one end of conductive roller, the auxiliary roller is installed on second bearing frame (44), from driving wheel (45) are installed to the one end of auxiliary roller, it is connected with the action wheel transmission through belt (46) to follow the driving wheel.
10. The copper foil oxidation preventing device of claim 5, wherein: still include crowded liquid roller set spare (5), crowded liquid roller set spare is including crowded liquid roller (51) that is located roller system drive assembly rear, install on third bearing frame (52) crowded liquid roller both ends, third bearing frame outside rigid coupling has slider (53), slider sliding connection has horizontal guide rail (54), horizontal guide rail outside rigid coupling has mounting panel (55), cylinder (56) are equipped with on the mounting panel, ejector pad (57) are equipped with on the piston rod of cylinder, the ejector pad is just right with third bearing frame's side.
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| CN202211101223.8A CN115574579B (en) | 2022-09-09 | 2022-09-09 | Air knife structure and copper foil oxidation preventing device |
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| CN202211101223.8A CN115574579B (en) | 2022-09-09 | 2022-09-09 | Air knife structure and copper foil oxidation preventing device |
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| CN115574579B (en) | 2023-12-08 |
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