CN114438565B - Electromagnetic shielding fabric electric brush nickel plating production equipment and method - Google Patents
Electromagnetic shielding fabric electric brush nickel plating production equipment and method Download PDFInfo
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- CN114438565B CN114438565B CN202210158763.3A CN202210158763A CN114438565B CN 114438565 B CN114438565 B CN 114438565B CN 202210158763 A CN202210158763 A CN 202210158763A CN 114438565 B CN114438565 B CN 114438565B
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/02—Tanks; Installations therefor
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/02—Heating or cooling
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
- C25D21/14—Controlled addition of electrolyte components
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
- C25D5/56—Electroplating of non-metallic surfaces of plastics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
Abstract
The invention discloses an electromagnetic shielding fabric electric brush nickel plating production device and method, wherein the device comprises a plating bath, a conveying component and a plating component, wherein plating solution is arranged in the plating bath; the conveying assembly comprises a blank reel and a receiving reel, one end of the blank is wound on the blank reel, and the other end of the blank is connected with the receiving reel after passing over the electroplating bath; the electroplating assembly comprises an anode plate, a cathode plate, a flow guide pipe, an electroplate device and an electroplating liquid circulating pump, wherein the anode plate and the cathode plate are arranged above the electroplating bath at intervals, the cathode plate is in contact connection with the blank, and a gap is reserved between the anode plate and the blank; one end of the flow guide pipe is positioned in the electroplating bath, one end of the electroplating device is communicated with the other end of the flow guide pipe, the other end of the electroplating device is provided with a continuous injection seam, the injection seam faces to a gap between the anode plate and the blank, and the electroplating liquid circulating pump is arranged on the flow guide pipe. The invention is applied to the technical field of electroplating, has simple equipment, high production efficiency and small environmental protection pressure for recycling the electroplating solution.
Description
Technical Field
The invention relates to the technical field of electroplating, in particular to an electromagnetic shielding fabric electric brush nickel plating production device and method.
Background
The electronic technology brings unprecedented convenience to work and life of people, and meanwhile, electromagnetic waves become electromagnetic pollution which cannot be ignored. Long-term and excessive electromagnetic radiation can cause direct injury to human body, and can induce cardiovascular diseases, diabetes, cancer mutation, etc. In addition, electromagnetic radiation also causes hidden danger to information safety, threatens the national politics, economy and military safety. Various electromagnetic shielding materials are developed, and an electromagnetic shielding fabric is one of the electromagnetic shielding materials.
The electromagnetic wave shielding fabric has good conductivity and can keep certain original characteristics of the fabric, so that the electromagnetic wave shielding fabric can be bonded and sewn, is easy to be manufactured into different geometric shapes to shield radiation sources, and is an ideal electromagnetic shielding material. According to different production and preparation technologies, at present, electromagnetic shielding fabrics mainly comprise metal wires and service yarn mixed fabrics, blended yarn fabrics, vacuum metal plating fabrics, copper sulfide fabrics, metal coating fabrics and chemical metal plating fabrics. Among them, the chemical plating metal fabric is especially flexible, good in air permeability and high in shielding effect, and is widely used.
At present, the fabric for electromagnetic shielding is generally treated by degreasing, roughening, activating, sensitizing, electroless copper plating, silver or nickel plating and the like, and has long process flow and low production efficiency. An electroplating line generally produces electromagnetic shielding fabrics at a rate on the order of centimeters per minute.
Disclosure of Invention
Aiming at the defect of low electroplating production efficiency of electromagnetic shielding fabrics in the prior art, the invention provides the production equipment and the method for plating the nickel by using the electromagnetic shielding fabrics with the electric brush, which not only can greatly improve the electroplating production efficiency of the shielding electroplating fabrics, but also have simple equipment and small environmental protection pressure for recycling the electroplating solution.
In order to achieve the above purpose, the invention provides an electromagnetic shielding fabric brush nickel plating production device, which comprises a plating bath, a conveying component and a plating component, wherein the plating bath is internally provided with a plating solution;
the conveying assembly comprises a blank reel and a receiving reel, one end of the blank is wound on the blank reel, and the other end of the blank is connected with the receiving reel after passing over the electroplating bath;
the electroplating assembly comprises an anode plate, a cathode plate, a flow guide pipe, an electroplate device and an electroplating liquid circulating pump, wherein the anode plate and the cathode plate are arranged above the electroplating bath at intervals, the cathode plate is in contact connection with the blank, and a gap is reserved between the anode plate and the blank;
one end of the flow guide pipe is positioned in the electroplating bath, one end of the electroplating device is communicated with the other end of the flow guide pipe, a continuous injection seam is formed in the other end of the electroplating device, the injection seam faces the gap, and the electroplating liquid circulating pump is arranged on the flow guide pipe.
In another embodiment, the conveying assembly further comprises a first conveying roller, wherein the first conveying roller is arranged above the electroplating bath and is in contact connection with the blank;
the electroplating assembly further comprises a fixing rod and a flexible pad, the fixing rod is fixedly arranged above the electroplating bath, one end of the flexible pad is connected with the fixing rod, the cathode plate is arranged at the other end of the flexible pad, and the blank is clamped between the cathode plate and the first conveying roller.
In another embodiment, the plating assembly further includes a spacer disposed within the gap, the injection slot facing the spacer, the spacer being made of a water permeable and non-conductive material.
In another embodiment, the electroplating device is a hollow polygonal prism, the injection seam is formed on one edge of the polygonal prism, and a pipe joint capable of being connected with the flow guide pipe is arranged on the edge surface or the end surface of the polygonal prism.
In another embodiment, a partition board capable of dividing the electroplating bath into a first bath cavity and a second bath cavity is arranged in the electroplating bath;
the partition plate is provided with a through hole capable of communicating the first groove cavity and the second groove cavity, and the through hole is provided with an electroplating liquid filtering structure;
the cathode plate, the anode plate and the electroplate device are all positioned above the first groove cavity, one end of the flow guide pipe is positioned in the second groove cavity, and the other end of the flow guide pipe is connected with the electroplate device.
In another embodiment, the electromagnetic shielding fabric brush nickel plating production apparatus further comprises a main salt adjustment system comprising a main salt container, a main salt nozzle, and a compressed air source;
the outlet end of the main salt nozzle is positioned below the liquid level of the electroplating liquid in the second groove cavity, the inlet end of the main salt nozzle is positioned on the liquid level of the electroplating liquid in the second groove cavity, the inlet end of the main salt nozzle is connected with the main salt container through a first hose, and the inlet end of the main salt nozzle is connected with the compressed air source through a second hose.
In another embodiment, the electromagnetic shielding fabric brush nickel plating production equipment further comprises a heating tank, wherein heating water and a heater are arranged in the heating tank, and the electroplating tank is supported in the heating tank so as to heat the electroplating solution in the electroplating tank in a water bath manner.
In another embodiment, the electromagnetic shielding fabric brush nickel plating production device further comprises a cleaning water tank, wherein the blank is connected with the receiving scroll after passing through the upper part of the electroplating tank and the upper part of the cleaning water tank in sequence;
the upper part of the cleaning water tank is fixedly provided with a cleaning water pump and a cleaning nozzle, the outlet end of the cleaning nozzle faces the upper side surface and the lower side surface of the fabric subjected to brush plating, and the inlet end of the cleaning nozzle is connected with the cleaning water pump through a water pipe.
In another embodiment, the electromagnetic shielding fabric brush nickel plating production apparatus further comprises a hollow drying box provided at a position between the cleaning nozzle and the receiving reel;
the drying box is internally provided with a heating system, gaps which can only be used for the blanks to pass through are formed in the two ends of the drying box, and the blanks pass through the drying box and then are connected with the receiving scroll.
In order to achieve the above purpose, the invention also provides a method for producing the electromagnetic shielding fabric electric brush nickel plating, which adopts the electromagnetic shielding fabric electric brush nickel plating production equipment, selects a blank as a polymer fiber fabric, and covers copper or nickel metal layers on two side surfaces or one side surface of the blank through chemical plating or magnetron sputtering, wherein the thickness of the blank is not more than 0.1mm, and the method specifically comprises the following steps:
preparing electroplating liquid, wherein parameters are as follows: 280-340g/L of nickel sulfate, 20-40g/L of carboxylic acid, 40g/L of glycine and the balance of water;
setting the current density between anode plate and cathode plate to 5-12A/dm 2 The winding linear speed of the receiving reel is 8-12m/min, the temperature of the electroplating solution is 30-60 ℃, and the Ph value is 0.6-1.2;
calculating the adding speed of the main salt according to the current magnitude and the current efficiency, checking the adding amount of the main salt according to the quality difference between the blank after plating and before plating to adjust the adding speed of the main salt, and titrating and modulating the Ph value of the electroplating solution at regular time, wherein the value range of the current efficiency is 93-96%.
Compared with the prior art, the production equipment and the method for plating the nickel on the electromagnetic shielding fabric through the electric brush have the following beneficial technical effects:
1. electroplating is carried out in a brush plating mode, so that the production efficiency of electroplating of shielding electroplated fabrics can be greatly improved;
2. the relatively closed drying system is adopted, so that the heat loss can be greatly reduced, and the drying efficiency is improved;
3. the compressed air nozzle is adopted to spray out the main salt, so that the dissolution of the main salt can be greatly accelerated, and the double effects of stabilizing the concentration of the main salt and stirring the air are achieved;
4. the water bath heating mode is adopted, so that the temperature constant temperature performance of the electroplating solution is good, and the stable-quality fabric coating can be obtained;
5. the electroplating solution after brush plating is treated by adopting an electroplating solution filtering structure in the electroplating bath, so that harmful impurities and impurity precipitation in the electroplating solution can be removed rapidly, the maintenance frequency of the electroplating solution is reduced, and the production efficiency is improved;
6. the electroplating solution formula of single main salt is adopted, so that the difficulty of accurate regulation and control of the nickel ion concentration of the electroplating solution is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an electromagnetic shielding fabric brush nickel plating production device in an embodiment of the invention;
fig. 2 is a schematic structural diagram of a main salt system according to an embodiment of the present invention.
Reference numerals: plating bath 1, plating solution 101, first chamber 102, second chamber 103, partition 104, and plating solution filtering structure 105; a blank reel 201, a receiving reel 202, a first transfer roller 203, a second transfer roller 204; anode plate 301, cathode plate 302, flow guide 303, electroplate 304, electroplating liquid circulating pump 305, fixing rod 306, flexible pad 307, and separator 308; a main salt nozzle 401, a main salt container 402, a compressed air source 403, a first hose 404, a second hose 405; a heating tank 5, heating water 501, a heater 502, and a stay 503; a washing water tank 6 and washing water 601; a cleaning water pump 701 and a cleaning nozzle 702; a drying oven 801, a heating system 802; blank 9.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the 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.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; the device can be mechanically connected, electrically connected, physically connected or wirelessly connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
Fig. 1-2 show an electromagnetic shielding fabric brush nickel plating production device disclosed in this embodiment, which mainly comprises a plating bath 1, a conveying component and a plating component. Wherein, the electroplating bath 1 is internally provided with an electroplating solution 101, and the electroplating solution 101 comprises 280-340g/L of nickel sulfate, 20-40g/L of carboxylic acid, 40g/L of glycine and the balance of water.
The transport assembly includes a stock reel 201 and a receiving reel 202, one end of the stock 9 being wound around the stock reel 201, and the other end being connected to the receiving reel 202 after passing over the plating tank 1. The blank 9 is a polymer fabric, the blank 9 is a composite fiber fabric which is coated with copper or nickel on one or two surfaces of the fabric through chemical plating or magnetron sputtering, and the width of the blank 9 is not less than 1000mm. The blank reel 201 is made of plastic and the blank reel 201 is attached with damping means so that the blank 9 is kept in tension during transport. The receiving spool 202 is made of a polymeric material or a metallic structural material. In this embodiment, the conveying assembly is driven by a variable frequency motor, the variable frequency motor is in transmission connection with the receiving reel 202, and the control mode adopts a control mode that the linear speed of the conductive fabric of the receiving reel 202 is constant, so that the conveying route of the fabric from the blank reel 201 to the electroplating bath 1 to the cleaning water tank 6 to the receiving reel 202 is realized.
In the specific implementation process, the electromagnetic shielding fabric brush nickel plating production device further comprises a bracket, the blank reel 201 and the receiving reel 202 are respectively connected to two sides of the bracket through bearings in a rotating way, the axes of the blank reel 201 and the receiving reel 202 are parallel, and the electroplating bath 1 is located between the blank reel 201 and the receiving reel 202. The plating tank 1 may be fixedly connected with the bracket or externally arranged.
The electroplating assembly comprises a power supply, an anode plate 301, a cathode plate 302, a flow guide pipe 303, an electroplate device 304 and an electroplating solution circulating pump 305, wherein the anode plate 301 is a rectangular plate made of graphite or other inert conductive materials and is electrically connected with the anode of the power supply. Cathode plate 302 is a copper sheet or foil, which is connected to the negative electrode of the power supply, and the length of the copper sheet or foil is not less than the fabric width of blank 9. The power supply adopts a direct current power supply or a pulse power supply, and the magnitude of the power supply current is larger than the product of the area of the anode plate 301 and the current density required by the electroplating process. The anode plate 301 and the cathode plate 302 are arranged above the electroplating bath 1 at intervals, the cathode plate 302 is contacted with the blank 9, and a gap is reserved between the anode plate 30 and the blank 9. The anode plate 301 is in parallel relation with the web of blank 9, the thickness of the gap between the web of blank 9 and the anode plate 301 is 5-20mm, preferably 10mm, and the web is lower than the anode plate 301. One end of the flow guiding pipe 303 is positioned in the electroplating bath 1, one end of the electroplating device 304 is communicated with the other end of the flow guiding pipe 303, a continuous injection seam is arranged at the other end of the electroplating device 304, the injection seam faces to a gap between the anode plate 301 and the blank 9, the electroplating liquid circulating pump 305 is an acid-resistant pump, and the electroplating liquid circulating pump 305 is arranged on the flow guiding pipe 303. In a specific implementation, the electroplate 304 is made of a polymer or polymer-based composite material, and the electroplate 304 is a hollow polygonal prism, such as a triangular prism; the injection slot is arranged on one edge of the polygonal prism, the width of the injection slot is not more than 2mm, and the length of the injection slot is not less than the length of the anode plate 301. The edge surface or end surface of the polygonal prism is provided with a pipe joint, the pipe joint is externally connected with a pressure water outlet of the electroplating liquid circulating pump 305 by adopting a hose, and a water inlet of the electroplating liquid circulating pump 305 is connected with the diversion pipe 303.
In this embodiment, the anode plate 301, the cathode plate 302, the flow guide 303, the electroplating device 304 and the electroplating solution circulating pump 305 are all fixedly arranged on the bracket, and the two ends of the anode plate 301 in the length direction can be optionally fixed on the electroplating tank 1. Further specifically, the conveying assembly further includes a first conveying roller 203, the first conveying roller 203 is rotatably connected to the bracket through a bearing and located above the plating tank 1, and the first conveying roller 203 is in contact connection with the blank 9. The electroplating assembly further comprises a fixing rod 306 and a flexible pad 307, wherein the fixing rod 306 is made of a rigid material, the fixing rod 306 is fixedly arranged on the bracket and located above the electroplating bath 1, the flexible pad 307 is made of a rubber material, one end of the flexible pad 307 is connected with the fixing rod 306, a copper sheet or a copper foil connected with a negative electrode of a power supply is adhered to the other end of the flexible pad 307, and the blank 9 is clamped between the cathode plate 302 and the first conveying roller 203. In the specific implementation process, the number of the first conveying rollers 203 is two, the two first conveying rollers 203 have a height difference and are axially parallel to the axes of the blank reel 201 and the receiving reel 202, the first conveying rollers 203 are made of polymer or polymer-based composite materials, and the blank 9 is clamped between the cathode plate 302 and the first conveying roller 203 with higher height, namely, the middle part of the copper sheet or copper foil serving as the anode plate 301 is tangential to the first conveying roller 203.
The electroplating assembly also includes a spacer 308 as a preferred embodiment, the spacer 308 being positioned in the gap between the anode plate 301 and the blank 9 and being fixedly connected to the anode plate 301 and in contact with the blank 9. By providing the spacer 308, the spacing between the anode plate 301 and the fabric blank is 5-20mm, and the fabric is positioned lower than the anode plate 301. The injection slit faces the separator 308 between the anode plate 301 and the blank 9, and the separator 308 is made of a water-permeable and non-conductive material, for example, a fabric made of animal hair or a brush, a non-woven fabric, a polymer fabric, or the like, and the separator 308 is made of a polymer fabric.
In this embodiment, a partition board 104 capable of dividing the plating tank 1 into a first tank cavity 102 and a second tank cavity 103 is disposed in the plating tank 1, a cathode plate 302, an anode plate 301 and a plating vessel 304 are all disposed above the first tank cavity 102, one end of a flow guiding pipe 303 is disposed in the second tank cavity 103, and the other end is connected with the plating vessel 304. The through holes which can be communicated with the first groove cavity 102 and the second groove cavity 103 are formed in the partition plate 104, the distance between the through holes and the bottoms of the two groove cavities is not smaller than 20mm, and the through holes are provided with the electroplating liquid filtering structure 105, and the electroplating liquid filtering structure 105 is in a form of a filter screen or active carbon or both the filter screen and the active carbon and is used for treating the electroplating liquid 101 after brush plating, so that harmful impurities and impurity precipitation in the electroplating liquid 101 can be removed rapidly, the maintenance frequency of the electroplating liquid 101 is reduced, and the production efficiency is improved.
In the embodiment, the electromagnetic shielding fabric brush nickel plating production equipment further comprises a main salt adjusting system so as to realize the stability of nickel ion concentration. Specifically, the main salt adjusting system includes a main salt container 402, a main salt nozzle 401, and a compressed air source 403, where the compressed air source 403 may be an air compressor or a high-pressure air bottle, and both the main salt container 402 and the compressed air source 403 may be fixedly disposed on a bracket. The main nozzle is fixed on the inner wall of the electroplating bath 1 in a mechanical way such as a clamp connection or a bolt connection, and the outlet end of the main salt nozzle 401 is positioned below the liquid level of the electroplating solution 101 in the second tank cavity 103, the inlet end of the main salt nozzle 401 is positioned on the liquid level of the electroplating solution 101 in the second tank cavity 103, the inlet end of the main salt nozzle 401 is connected with the main salt container 402 through a first hose 404, the inlet end of the main salt nozzle 401 is connected with the compressed air source 403 through a second hose 405, and the first hose 404 and the second hose 405 are both made of polymer materials or polymer-based composite materials. The main salt container 402 is internally provided with nickel sulfate particles, and the maximum size of the particles is not more than 0.2mm, so that the main salt is added in the form of nickel sulfate particles, and the main salt is sprayed out by adopting a compressed air nozzle, so that the dissolution of the main salt can be greatly accelerated, and the double effects of stabilizing the concentration of the main salt and stirring air are achieved. In a specific implementation, the difference between the highest position of the main salt in the main salt container 402 and the height of the inlet end of the main nozzle is not greater than 50mm, and the outlet tip of the main salt nozzle 401 is made of polymer material. It should be noted that the adding speed of the main salt is calculated according to the current magnitude and the current efficiency of the power supply, the adding speed is adjusted by checking the adding amount of the main salt at regular time according to the quality difference between the fabric after plating and before plating, and the Ph value of the brush plating solution is titrated and adjusted at regular time. The calculation method of the adding speed of the main salt is a conventional technical means in the art, so in this embodiment, a description thereof will not be repeated.
In this embodiment, electromagnetic shielding fabric brush nickel plating production facility still includes heating tank 5, sets up heating water 501 and heater 502 in the heating tank 5, and plating bath 1 supports and establishes in heating tank 5 to carry out the water bath heating to plating bath 101 in the plating bath 1, adopt the water bath heating mode, make plating bath 101 temperature constant temperature performance good, be favorable to obtaining the fabric coating of stable quality. Wherein, the heater 502 is an electric heating rod, and the heating tank 5 is coated with a heat insulation material. In an embodiment wherein the heating tank 5 is made of a polymer or polymer-based composite material, the plating tank 1 employs a plurality of pillars 503 standing on the bottom of the heating tank 5. The lower part and the tank bottom of the electroplating tank 1 are made of glass, the upper end of the glass is higher than the water level heated by the water bath, the upper part of the electroplating tank 1 is made of polymer materials, and the upper part and the lower part of the electroplating tank 1 are connected in a cementing mode.
In this embodiment, the electromagnetic shielding fabric brush nickel plating production apparatus further includes a cleaning water tank 6, a cleaning system and a drying system, wherein the cleaning water tank 6 is used for recovering cleaning water 601 left by the cleaning system in the cleaning process. The cleaning water tank 6 is made of a polymer or polymer-based composite material, and is provided adjacent to the plating vessel 1 or the heating vessel 5, or a part of the heating vessel 5 may be directly used as the cleaning water tank 6. The blank 9 passes through the upper part of the plating tank 1 and the upper part of the cleaning water tank 6 in this order, and is then connected to the receiving reel 202. In a specific implementation process, two second conveying rollers 204 are arranged above the cleaning water tank 6, the two second conveying rollers 204 are rotatably connected with the bracket through bearings, a height difference is formed between the two second conveying rollers 204, the axial direction of the two second conveying rollers is parallel to the axes of the blank reel 201 and the receiving reel 202, and the second conveying rollers 204 are also made of polymer or polymer-based composite materials. The cleaning system is arranged between the first second conveying roller 204 and the second conveying roller 204 and is used for cleaning the fabric of the blank 9 after brush plating; a drying system is provided between the second transfer roller and the receiving reel 202 for drying the washed fabric of blanks 9.
In this embodiment, the cleaning system includes a cleaning water pump 701 and a cleaning nozzle 702 fixedly disposed above the cleaning water tank 6, the cleaning water pump 701 and the cleaning nozzle 702 are both fixedly disposed on the support, and the outlet end of the cleaning nozzle 702 faces the upper and lower sides of the fabric after being brush-plated, the inlet end of the cleaning nozzle 702 is connected to the outlet end of the cleaning water pump 701 through a water pipe, and the water source of the cleaning water pump 701 uses the water for cleaning the fabric after being treated.
In this embodiment, the drying system includes a hollow drying oven 801 and a heating system 802 provided inside the drying oven 801, and the drying oven 801 is fixedly provided on a stand at a position between the second conveying roller 204 and the receiving reel 202. The two ends of the drying box 801 are provided with gaps and/or operation windows which can only pass through the blanks 9, the heating system 802 is a hot fan arranged in the drying box 801, so that the upper surface and the lower surface of the fabric of the blanks 9 can be simultaneously dried in an electric hot air mode, and the blanks 9 pass through the drying box 801 through the gaps and are connected with the receiving scroll 202. By adopting the relatively closed drying system, the heat loss can be greatly reduced, and the drying efficiency can be improved.
It should be noted that, in the present embodiment, the blank reel 201, the receiving reel 202, the first conveying roller 203 and the second conveying roller 204 may also be directly fixed on a bearing seat outside the plating tank 1 or the cleaning tank by adopting bearings, and the height between the bearing seat and the plating tank 1 or the inner cavity of the cleaning tank is higher than the height of the liquid level in the tank by adopting a movable baffle to isolate the plating liquid 101 from the cleaning water.
On the basis of the electromagnetic shielding fabric electric brush nickel plating production equipment, the embodiment also discloses an electromagnetic shielding fabric electric brush nickel plating production method, wherein the electromagnetic shielding fabric electric brush nickel plating production equipment is adopted, a blank 9 is selected as a polymer fiber fabric, the surfaces of two sides or a single side of the blank 9 are covered with copper or nickel metal layers through chemical plating or magnetron sputtering, the thickness of the blank 9 is not more than 0.1mm, and the method specifically comprises the following steps:
the plating solution 101 was prepared with the following parameters: 280-340g/L of nickel sulfate, 20-40g/L of carboxylic acid, 40g/L of glycine and the balance of water;
setting the current density between the anode plate 301 and the cathode plate 302 to be 5-12A/dm 2 The winding linear speed of the receiving reel 202 is 8-12m/min, the temperature of the electroplating solution 101 is 30-60 ℃, and the Ph value is 0.6-1.2;
calculating the adding speed of the main salt according to the current magnitude and the current efficiency, checking the adding amount of the main salt according to the quality difference between the plated blank 9 and the before-plating to adjust the adding speed of the main salt, and titrating and modulating the Ph value of the electroplating solution 101 at regular time, wherein the value range of the current efficiency is 93-96%.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. The production equipment for plating the nickel on the electromagnetic shielding fabric through the electric brush is characterized by comprising an electroplating bath, a conveying assembly and an electroplating assembly, wherein the electroplating bath is internally provided with electroplating liquid;
the conveying assembly comprises a blank reel and a receiving reel, one end of the blank is wound on the blank reel, and the other end of the blank is connected with the receiving reel after passing over the electroplating bath;
the electroplating assembly comprises an anode plate, a cathode plate, a flow guide pipe, an electroplate device and an electroplating liquid circulating pump, wherein the anode plate and the cathode plate are arranged above the electroplating bath at intervals, the cathode plate is in contact connection with the blank, and a gap is reserved between the anode plate and the blank;
one end of the flow guide pipe is positioned in the electroplating bath, one end of the electroplating device is communicated with the other end of the flow guide pipe, a continuous injection seam is formed in the other end of the electroplating device, the injection seam faces the gap, and the electroplating liquid circulating pump is arranged on the flow guide pipe.
2. The electromagnetic shielding fabric brush nickel plating production apparatus of claim 1, wherein the transport assembly further comprises a first transfer roller, the first transfer roller is disposed above the plating bath and the first transfer roller is in contact with the blank;
the electroplating assembly further comprises a fixing rod and a flexible pad, the fixing rod is fixedly arranged above the electroplating bath, one end of the flexible pad is connected with the fixing rod, the cathode plate is arranged at the other end of the flexible pad, and the blank is clamped between the cathode plate and the first conveying roller.
3. The electromagnetic shielding fabric brush nickel plating production apparatus of claim 1, wherein the plating assembly further comprises a spacer disposed within the gap, the injection slot facing the spacer, the spacer being made of a water permeable and non-conductive material.
4. The device for producing the electric brush nickel plating of the electromagnetic shielding fabric according to claim 1, wherein the electroplate device is a hollow polygonal prism, the injection seam is formed on one edge of the polygonal prism, and a pipe joint capable of being connected with the flow guide pipe is arranged on the edge surface or the end surface of the polygonal prism.
5. The electromagnetic shielding fabric brush nickel plating production equipment according to claim 1 or 2 or 3 or 4, wherein a partition board capable of dividing the plating tank into a first tank cavity and a second tank cavity is arranged in the plating tank;
the partition plate is provided with a through hole capable of communicating the first groove cavity and the second groove cavity, and the through hole is provided with an electroplating liquid filtering structure;
the cathode plate, the anode plate and the electroplate device are all positioned above the first groove cavity, one end of the flow guide pipe is positioned in the second groove cavity, and the other end of the flow guide pipe is connected with the electroplate device.
6. The electromagnetic shielding fabric brush nickel plating production apparatus of claim 5, further comprising a main salt conditioning system comprising a main salt container, a main salt nozzle, and a compressed air source;
the outlet end of the main salt nozzle is positioned below the liquid level of the electroplating liquid in the second groove cavity, the inlet end of the main salt nozzle is positioned on the liquid level of the electroplating liquid in the second groove cavity, the inlet end of the main salt nozzle is connected with the main salt container through a first hose, and the inlet end of the main salt nozzle is connected with the compressed air source through a second hose.
7. The apparatus for producing the brush nickel plating for electromagnetic shielding fabrics according to claim 1, 2, 3 or 4, further comprising a heating tank, wherein heating water and a heater are arranged in the heating tank, and the plating tank is supported in the heating tank so as to heat the plating solution in the plating tank in a water bath.
8. The electromagnetic shielding fabric brush nickel plating production apparatus according to claim 1 or 2 or 3 or 4, further comprising a washing tank, wherein the blank is connected to the receiving reel after passing over the plating tank and over the washing tank in order;
the upper part of the cleaning water tank is fixedly provided with a cleaning water pump and a cleaning nozzle, the outlet end of the cleaning nozzle faces the upper side surface and the lower side surface of the fabric subjected to brush plating, and the inlet end of the cleaning nozzle is connected with the cleaning water pump through a water pipe.
9. The electromagnetic shielding fabric brush nickel plating production apparatus of claim 8, further comprising a hollow drying box disposed at a position between the cleaning nozzle and the receiving reel;
the drying box is internally provided with a heating system, gaps which can only be used for the blanks to pass through are formed in the two ends of the drying box, and the blanks pass through the drying box and then are connected with the receiving scroll.
10. The method for producing the electric brush nickel plating of the electromagnetic shielding fabric is characterized in that the production equipment for producing the electric brush nickel plating of the electromagnetic shielding fabric is adopted, a blank is selected as a polymer fiber fabric, copper or nickel metal layers are covered on two side surfaces or one side surface of the blank through chemical plating or magnetron sputtering, the thickness of the blank is not more than 0.1mm, and the method specifically comprises the following steps:
preparing electroplating liquid, wherein parameters are as follows: 280-340g/L of nickel sulfate, 20-40g/L of carboxylic acid, 40g/L of glycine and the balance of water;
setting the current density between anode plate and cathode plate to 5-12A/dm 2 The winding linear speed of the receiving reel is 8-12m/min, the temperature of the electroplating solution is 30-60 ℃, and the Ph value is 0.6-1.2;
calculating the adding speed of the main salt according to the current magnitude and the current efficiency, checking the adding amount of the main salt according to the quality difference between the blank after plating and before plating to adjust the adding speed of the main salt, and titrating and modulating the Ph value of the electroplating solution at regular time, wherein the value range of the current efficiency is 93-96%.
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| US1974441A (en) * | 1929-10-09 | 1934-09-25 | Celluloid Corp | Process and apparatus for electroplating |
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