CN204198847U - Silica gel cable surface vacuum plating unit - Google Patents
Silica gel cable surface vacuum plating unit Download PDFInfo
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- CN204198847U CN204198847U CN201420557532.0U CN201420557532U CN204198847U CN 204198847 U CN204198847 U CN 204198847U CN 201420557532 U CN201420557532 U CN 201420557532U CN 204198847 U CN204198847 U CN 204198847U
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000000741 silica gel Substances 0.000 title claims abstract description 21
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 21
- 238000007747 plating Methods 0.000 title abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 62
- 239000011248 coating agent Substances 0.000 claims abstract description 58
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 21
- 229920000052 poly(p-xylylene) Polymers 0.000 claims abstract description 21
- 238000005086 pumping Methods 0.000 claims description 78
- 238000007789 sealing Methods 0.000 claims description 46
- 238000004804 winding Methods 0.000 claims description 20
- 238000001771 vacuum deposition Methods 0.000 claims description 12
- 239000007888 film coating Substances 0.000 claims description 10
- 238000009501 film coating Methods 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 230000008021 deposition Effects 0.000 abstract description 20
- 238000000151 deposition Methods 0.000 description 19
- 229920002379 silicone rubber Polymers 0.000 description 12
- 230000008901 benefit Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 239000004945 silicone rubber Substances 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013386 optimize process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002897 polymer film coating Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Physical Vapour Deposition (AREA)
Abstract
The utility model discloses a kind of silica gel cable surface vacuum plating unit, comprise vacuum chamber, pre-vacuum chamber, reeling-up reeling-out device and retracting device, pre-vacuum chamber comprises the upstream and downstream pre-vacuum chamber being separately positioned on vacuum chamber upstream and downstream, be provided with cable entries in the front end of the upstream pre-vacuum chamber adjacent with reeling-up reeling-out device, be provided with cable exits in the rear end of the downstream pre-vacuum chamber adjacent with retracting device; During coating equipment work, cable to be coated is discharged by reeling-up reeling-out device and enters pre-vacuum chamber and vacuum chamber by the opening on cable entries and baffle plate, when cable is in vacuum chamber, coated material forms coating at cable surface aggregate, the cable being formed with plated film leaves vacuum chamber and pre-vacuum chamber by opening and cable exits, and is received by retracting device.The utility model makes Parylene coated materials be deposited by intermittent type list stove and changes continous way deposition into, substantially increases plated film efficiency.
Description
Technical Field
The utility model relates to a coating machine, concretely relates to continuous coating machine of silica gel cable surface coating.
Background
In modern industry, the silicon rubber has wide application field, can be processed into pipes, sheets, films and special-shaped components as required, and can be used for manufacturing a plurality of model products and industrial matching products. The silicone tube is a linear high-molecular elastomer containing silicon-oxygen bonds, so that the silicone tube has high thermal stability, excellent ozone aging resistance, excellent oxygen aging resistance, excellent light aging resistance and excellent weather aging resistance, and simultaneously has excellent electrical insulation performance, excellent mildew resistance and high air permeability. The silicon rubber cable is suitable for power transmission lines for fixed laying or connecting cables for mobile electric appliances with the alternating current rated voltage of 0.6/1KV and below, has the characteristics of heat radiation resistance, cold resistance, acid and alkali resistance, corrosive gas resistance, water resistance and the like, is soft in cable structure, convenient to radiate, stable in electrical performance in high-temperature (high and cold) environment, outstanding in ageing resistance and long in service life, and is widely applied to industries such as metallurgy, electric power, petrifaction, electronics, automobile manufacturing and the like. Silicone rubber cables have the disadvantages of dry surfaces, high coefficients of friction, difficulty in automatic assembly or longer threads, and the need for surface modification to reduce surface energy to improve performance.
At present, the lubricity is improved by generally adopting a mode of coating talcum powder on the surface of silicon rubber; but also brings a series of problems of unstable lubrication effect, easy pollution to the environment and surrounding circuit board electronic components and the like. In recent years, parylene coating is adopted in foreign countries to improve the surface performance of silicone rubber. Parylene, a polymer of p-xylene, is a new conformal coating material developed for use in the mid sixties united states Union Carbide co. The molecular structure of the polymer can be classified into N type, C type, D type, HT type, etc. Each type has different characteristics, and the most suitable type of Parylene needs to be selected according to specific applications, wherein Parylene N has high dielectric strength and low dielectric constant which does not change along with frequency, the penetration capability of the coating is strongest, and the N type is usually adopted for silicone rubber modification.
Parylene is prepared by a unique vacuum vapor deposition process that "grows" reactive small molecules on the substrate surface to produce a fully conformal polymer film coating that can be applied to surfaces of various shapes, including sharp edges, crevices, and interior surfaces. The 0.1-100 micron film coating prepared by room temperature deposition has the advantages of uniform thickness, compactness, no pinholes, transparency, no stress, no auxiliary agent, no damage to workpieces, excellent electrical insulation and protection, and good isolation and protection functions in severe environments such as salt spray, mould, humidity, corrosivity and the like.
The surface of the silicon rubber is modified by Parylene, and the silicon rubber has the following advantages: good dry lubrication properties; excellent barrier properties; friction and wear resistance, and surface marks are protected; the surface is smooth and is not stained with fiber and dirt; the swelling resistance is good; the compression resistance is good; the temperature application range is wide; and the service life is long.
The preparation process of the Parylene coating material comprises the evaporation of the raw material in the evaporation chamber and the cracking of the raw material after the evaporation in the cracking chamber into the monomer required for the polymerization reaction to occur on the surface of the product to be coated. The polymerization process of the Parylene monomer needs to be completed in the deposition chamber close to vacuum, which limits the application range of Parylene, i.e. the size of the part to be processed cannot exceed the volume of the deposition chamber, and the volume of the deposition chamber is not easily too large due to the power of the vacuum pump, usually about 70-100L. This makes the traditional coating machine unable to carry out continuous surface processing to hundreds of meters or even thousands of meters of silicone rubber cables.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can realize the continuous incessant coated coating machine of several hundred meters or longer silica gel cable, this coating machine has continuous deposit, the efficient advantage of coating film.
In order to achieve the above object, the utility model provides a silica gel cable surface vacuum coating machine, silica gel cable surface vacuum coating machine includes:
the vacuum chamber is provided with a raw material inlet for receiving the coating material and an air pumping port connected with the vacuum pump;
the device comprises a vacuum chamber, a pre-pumping chamber, a vacuum pump and a control device, wherein the pre-pumping chamber comprises an upstream pre-pumping chamber arranged at the upstream of the vacuum chamber and a downstream pre-pumping chamber arranged at the downstream of the vacuum chamber, the upstream pre-pumping chamber and the downstream pre-pumping chamber respectively comprise one-stage or multi-stage pre-pumping chambers, the pre-pumping chambers are respectively provided with a pre-pumping port connected with the vacuum pump, baffles are arranged between the adjacent vacuum chambers and the pre-pumping chambers and between the adjacent two pre-pumping chambers, and openings for cables to pass through are arranged on the; and
the winding and unwinding device is arranged at the upstream of the upstream pre-drawing chamber, the winding and unwinding device is arranged at the downstream of the downstream pre-drawing chamber, a cable inlet is formed in the front end of the upstream pre-drawing chamber adjacent to the winding and unwinding device, and a cable outlet is formed in the rear end of the downstream pre-drawing chamber adjacent to the winding and unwinding device; wherein,
when the coating machine works, the cables to be coated are released by the winding and unwinding device and enter the pre-drawing chamber and the vacuum chamber through the cable inlets and the openings in the baffle plates, when the cables are in the vacuum chamber, the coating materials are polymerized on the surfaces of the cables to form coatings, and the cables with the formed coatings leave the vacuum chamber and the pre-drawing chamber through the openings and the cable outlets and are received by the winding and unwinding device.
In a preferred embodiment, the opening of the barrier and the cable inlet and cable outlet are provided with a dynamic seal such that as the cable passes through the dynamic seal, the amount of air carried is reduced and a pressure drop is maintained across the barrier.
In a preferred embodiment, the dynamic sealing structure comprises a sealing seat, a sealing nut and a sealing gasket, the sealing seat is fixedly installed on the baffle, the sealing nut is matched with the sealing seat, the sealing gasket is arranged between the sealing nut and the sealing seat, the sealing seat and the sealing gasket are provided with holes matched with the diameter of the cable in size, and the cable passes through the holes of the dynamic sealing structure and penetrates through the baffle. In a preferred embodiment, the gasket is made of a rubber material and the diameter of the hole of the gasket is slightly smaller than the diameter of the cable.
In a preferred embodiment, the dynamic sealing structure is provided with a smooth surface in contact with the cable.
In a preferred embodiment, the vacuum chamber is provided with a plurality of pumping ports, and/or the pre-pumping chamber is provided with a plurality of pre-pumping ports.
In a preferred embodiment, the cable is a silicone rubber cable of hundreds of meters to thousands of meters.
In a preferred embodiment, two stages of pre-pumping chambers are arranged at the upstream and the downstream of the vacuum chamber, two ends of the vacuum chamber are respectively connected with one end of the second stage upstream pre-pumping chamber and one end of the second stage downstream pre-pumping chamber, and the other ends of the second stage upstream pre-pumping chamber and the second stage downstream pre-pumping chamber are respectively connected with the first stage upstream pre-pumping chamber and the first stage downstream pre-pumping chamber.
In a preferred embodiment, the air pressure in the vacuum chamber is less than the air pressure in the second stage upstream and downstream pre-pumping chambers, the air pressure in the second stage upstream and downstream pre-pumping chambers is less than the air pressure in the first stage upstream and downstream pre-pumping chambers, and the air pressure in the first stage upstream and downstream pre-pumping chambers is less than the air pressure of the atmospheric environment.
In a preferred embodiment, the air pressure in the vacuum chamber is kept between 10Pa and 30Pa, the air pressure in the second-stage pre-pumping chamber is kept between 30Pa and 200Pa, and the air pressure in the first-stage pre-pumping chamber is kept between 200Pa and 1200 Pa.
In a preferred embodiment, the coating material is Parylene.
In a preferred embodiment, the vacuum chamber is provided with a measuring port externally connected with an air pressure sensor, and the measuring port is used for measuring the air pressure in the vacuum chamber.
In a preferred embodiment, the cable keeps a tension state during the running process, and the reeled-out device and the reeling-in device control the uniform movement.
In a preferred embodiment, the cable has a running speed of about 60 to 200 m/h.
In a preferred embodiment, the deposition rate of the coating on the surface of the cable is about 10-30 um/h.
The utility model also provides a method of carrying out continuous coating film to the cable surface, the method includes the step:
(1) providing the silica gel cable surface vacuum coating machine as described above;
(2) vacuumizing the vacuum chamber and the pre-pumping chamber by a vacuum pump to ensure that the air pressure of the atmospheric environment, the air pressure in the pre-pumping chamber and the air pressure in the vacuum chamber are in a decreasing relation, and the vacuum degree required by film coating is achieved in the vacuum chamber;
(3) providing a coating material to the vacuum chamber of a coater;
(4) the cable to be coated is provided by a winding and unwinding device, continuously enters the pre-pumping chamber and the vacuum chamber, leaves the vacuum chamber after the coating is finished in the vacuum chamber, and returns to the atmospheric environment through the downstream pre-pumping chamber to be received by the winding and unwinding device.
In a preferred embodiment, when the coating machine is provided with a multi-stage pre-pumping chamber, the closer the coating machine is to the vacuum chamber, the lower the air pressure of the pre-pumping chamber is.
The utility model discloses make Parylene material coating change continuous type deposit into by intermittent type formula single-furnace deposit, the pressure differential of atmosphere and real empty room has been slowed down in the design of taking out room and dynamic seal structure in advance, has realized that the product lasts business turn over deposit cavity, has improved coating film efficiency greatly.
Drawings
FIG. 1a is a top view of a continuous coater for coating a surface of a silica gel cable according to an embodiment of the present invention;
FIG. 1b is a front view of a continuous coater for coating the surface of a silica gel cable according to an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1 a.
Detailed Description
The inventor develops a set of continuous coating system capable of coating the surface of a silicone rubber cable with any length through extensive and intensive research and reasonable vacuum structure design, can realize the winding and unwinding of two ends of the cable in the atmospheric environment, and simultaneously completes the rapid and continuous coating of Parylene on the surface of the cable in a vacuum chamber.
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.
Continuous coating machine for silica gel cable surface coating
Fig. 1a and 1b are a top view and a front view of a continuous coating machine for coating the surface of a silica gel cable according to an embodiment of the present invention. As shown in fig. 1a-1b, the continuous coating machine for silica gel cable surface coating of the present invention comprises a vacuum chamber 1, a winding and unwinding device 4 and a winding and unwinding device 12, wherein two stages of pre-pumping chambers are respectively disposed at the upstream and downstream of the vacuum chamber 1, i.e. a first stage pre-pumping chamber 2a, 2b and a second stage pre-pumping chamber 3a, 3 b. The unwinding means 4 and the winding means 12 are arranged upstream and downstream of the first-stage pre-extraction chamber 2a and the first-stage pre-extraction chamber 2b, respectively.
The adjacent vacuum chambers and the pre-pumping chamber are sealed by baffle structures, and only openings allowing the cables 5 to pass are reserved. As shown, a cable entry 10 is provided in the front baffle 16a of the first stage pre-pump chamber 2a, and a cable exit 11 is provided in the rear baffle 16b of the first stage pre-pump chamber 2 b.
The vacuum chamber 1 is provided with a raw material inlet 6 for receiving a Parylene monomer from the coating material preparation device, the vacuum chamber and the pre-pumping chamber are respectively provided with a pumping port 9 and a pre-pumping port 8 which are connected with a vacuum pump, and the vacuum chamber is also provided with a measuring port which is externally connected with an air pressure sensor and is used for measuring the air pressure in the vacuum chamber. In the continuous working process of the film coating machine, the vacuum pump continuously vacuumizes the vacuum chamber and the pre-pumping chamber, so that air brought by the movement of the cable can be continuously pumped out, and the pressure in the vacuum chamber and the pre-pumping chamber is further ensured to meet the working requirement all the time.
When the coating machine works, a cable 5 to be coated is released from the winding and unwinding device 4 at a constant speed, enters the first-stage pre-pumping chamber 2a through the cable inlet 10, and then sequentially enters the second-stage pre-pumping chamber 3a and the vacuum chamber 1 through the openings between the baffles, and when the cable advances in the vacuum chamber 1, the Parylene monomers in the vacuum chamber 1 are adsorbed on the surface of the cable and polymerized with each other to form a continuous and complete Parylene molecular structure, and a lubricating protective layer is formed on the surface of the cable. The cable is continuously advanced in the vacuum chamber, and the cable with the formed coating passes through the downstream pre-drawing chamber, comes out of the cable outlet 11, is guided by the guide wheel 17 of the winding device 12 and is wound on the compression wheel 18.
FIG. 2 is an enlarged view of the dynamic seal on the baffle of FIG. 1 a. As shown in fig. 2, the dynamic sealing structure comprises a sealing seat 13, a sealing nut 14 and a sealing gasket 15, wherein the sealing seat 13 is fixedly mounted on the baffle, the sealing nut 14 is matched with the sealing seat 13, an opening with the size matched with the diameter of the cable is formed in the sealing nut and the sealing seat, the sealing gasket 15 is arranged between the sealing nut 14 and the sealing seat 13, the aperture of the sealing gasket is slightly smaller than the diameter of the cable, and the interference fit between the sealing gasket and the cable is beneficial to ensuring the effectiveness of dynamic sealing. Through the unique axial dynamic sealing design, the leakage amount of gas can be ensured not to exceed an acceptable range when the cable enters and exits the vacuum chamber and the pre-pumping chamber.
Preferably, the gasket 15 is made of a rubber material. It should be noted that the surfaces of the gland nut 14, the gland seat 13 and the bore of the gasket are smooth so that the cable can pass through the dynamic seal smoothly without damaging the lubricating coating already formed on the surface of the cable.
In the illustrated embodiment, two stages of pre-pumping chambers are respectively provided upstream and downstream of the vacuum chamber 1, wherein the air pressure in the vacuum chamber 1 is maintained between 10Pa and 30Pa, the air pressure in the first stage pre-pumping chambers 2a and 2b is maintained between 30Pa and 200Pa, and the air pressure in the second stage pre-pumping chambers 3a and 3b is maintained between 200Pa and 1200 Pa. In fact, the utility model discloses a continuous coating machine of silica gel cable surface coating also can be provided with 3 grades or the room of taking out in advance more than the tertiary to reach more ideal evacuation effect.
In the prior art, a material to be coated is integrally placed in a deposition chamber, the deposition chamber is vacuumized and then coated, and after coating is completed, gas is filled into the deposition chamber and the coated material is taken out. And the design of the pre-pumping chamber ensures that a pre-pumping vacuum environment with step-type change is formed between the atmospheric environment and the vacuum chamber, avoids overlarge pressure difference, ensures that the cable can continuously and stably move in the atmosphere, the pre-pumping chamber and the vacuum chamber, changes inefficient intermittent coating into efficient continuous coating, and simultaneously keeps the vacuum degree in the vacuum chamber not more than 30 Pa.
The cable 5 keeps a certain tension in the process of advancing, and is controlled by the reeling and unreeling device 4 and the reeling and unreeling device 12 to move at a constant speed. It should be noted that in order to ensure the integrity and effectiveness of the coating on the cable surface, the cable should not be routed too fast, and in a specific embodiment, the routing speed is preferably not more than 80 m/h. The cable rapidly advances in the vacuum chamber, and the concentration of the Parylene monomer in the vacuum chamber is kept relatively stable, so that a coating layer with uniform thickness can be formed on the cable.
The improvement of the deposition rate can effectively improve the wiring speed and further improve the working efficiency of the film plating machine. The optimized process is adopted, the plasma modification treatment is carried out on the surface of the cable, the adsorbability of gas monomers on the surface of silicon rubber is enhanced, and the rapid deposition of Parylene can be realized, so that the film coating efficiency of the cable is improved, wherein the deposition rate can reach 20 um/h.
Advantages of the invention
As mentioned above the utility model discloses a continuous coating machine of silica gel cable surface coating has following advantage compared in the coating machine among the prior art:
because of the limitation of the power of the vacuum pump, the volume of a deposition chamber of a film coating machine in the prior art is limited to about 70-100L, and the film coating process flow is that the material to be coated is integrally put into the deposition chamber, the film coating is carried out after vacuumizing is carried out, after the film coating is finished, gas is filled into the deposition chamber, and the coated material is taken out, so that the application range of a coated object is limited, and the utility model changes the intermittent single-furnace deposition into the continuous deposition for the coating of Parylene material; the novel film plating machine is provided with the pre-pumping chamber and the dynamic sealing structure, so that the pressure difference between the atmosphere and the vacuum chamber is reduced, the product can continuously enter and exit the deposition chamber, and the vacuum degree of the deposition chamber is kept in a range meeting the requirements; the coating machine simultaneously adopts optimized process parameters, realizes the rapid deposition of the Parylene material, and greatly increases the coating efficiency.
Along with the continuous expansion of trades such as china's electric power industry, data communication industry, urban rail transit industry, automobile industry and shipbuilding to the demand scale of cable, corresponding cable surface modification market is also very huge, adopts the utility model discloses a cable surface coating continuous film coating machine carries out surface modification to the cable and can satisfy lubricated effect stability when, improves coating efficiency greatly, and economic benefits estimates to the annual output value can reach several tens of millions.
The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.
Claims (9)
1. The utility model provides a silica gel cable surface vacuum coating machine which characterized in that, silica gel cable surface vacuum coating machine includes:
the vacuum chamber is provided with a raw material inlet for receiving the coating material and an air pumping port connected with the vacuum pump;
the device comprises a vacuum chamber, a pre-pumping chamber, a vacuum pump and a control device, wherein the pre-pumping chamber comprises an upstream pre-pumping chamber arranged at the upstream of the vacuum chamber and a downstream pre-pumping chamber arranged at the downstream of the vacuum chamber, the upstream pre-pumping chamber and the downstream pre-pumping chamber respectively comprise one-stage or multi-stage pre-pumping chambers, the pre-pumping chambers are respectively provided with a pre-pumping port connected with the vacuum pump, baffles are arranged between the adjacent vacuum chambers and the pre-pumping chambers and between the adjacent two pre-pumping chambers, and openings for cables to pass through are arranged on the; the winding and unwinding device is arranged at the upstream of the upstream pre-drawing chamber, the winding and unwinding device is arranged at the downstream of the downstream pre-drawing chamber, a cable inlet is formed in the front end of the upstream pre-drawing chamber adjacent to the winding and unwinding device, and a cable outlet is formed in the rear end of the downstream pre-drawing chamber adjacent to the winding and unwinding device; wherein,
when the film coating machine works, cables to be coated are released by the winding and unwinding device and enter the pre-drawing chamber and the vacuum chamber through the cable inlets and the openings in the baffle plate, when the cables are in the vacuum chamber, the coating materials are polymerized on the surfaces of the cables to form coatings, and the cables with the formed coatings leave the vacuum chamber and the pre-drawing chamber through the openings and the cable outlets and are received by the winding device.
2. The silicone cable surface vacuum coater of claim 1, wherein the openings of the baffles and the cable inlets and cable outlets are provided with dynamic sealing structures, so that the carrying amount of air is reduced and a certain pressure drop is maintained across the baffles when the cables pass through the dynamic sealing structures.
3. The vacuum coating machine for the surfaces of silica gel cables as claimed in claim 2, wherein the dynamic sealing structure comprises a sealing seat, a sealing nut and a sealing gasket, the sealing seat is fixedly mounted on the baffle, the sealing nut is matched with the sealing seat, the sealing gasket is arranged between the sealing nut and the sealing seat, the sealing seat and the sealing gasket are provided with holes with the size matched with the diameter of the cable, and the cable passes through the baffle through the holes of the dynamic sealing structure.
4. The silicone cable surface vacuum coating machine of claim 2, wherein the dynamic seal structure is provided with a smooth surface that contacts the cable.
5. The vacuum coating machine for the surfaces of silica gel cables as claimed in claim 1, wherein the vacuum chamber is provided with a plurality of pumping ports, and/or the pre-pumping chamber is provided with a plurality of pre-pumping ports.
6. The vacuum coating machine for the surfaces of silica gel cables as claimed in claim 1, wherein two stages of pre-pumping chambers are arranged at the upstream and downstream of the vacuum chamber, two ends of the vacuum chamber are respectively connected with one end of the second stage of pre-pumping chamber at the upstream and downstream, and the other end of the second stage of pre-pumping chamber at the upstream and downstream is respectively connected with the first stage of pre-pumping chamber at the upstream and downstream.
7. The silicone cable surface vacuum coating machine of claim 6, wherein the air pressure in the vacuum chamber is less than the air pressure in the second stage upstream and downstream pre-pumping chambers, the air pressure in the second stage upstream and downstream pre-pumping chambers is less than the air pressure in the first stage upstream and downstream pre-pumping chambers, and the air pressure in the first stage upstream and downstream pre-pumping chambers is less than the air pressure of the atmospheric environment.
8. The silicone cable surface vacuum coater of claim 1, wherein the coating material is Parylene.
9. The vacuum coating machine for the surfaces of silica gel cables as claimed in claim 6, wherein the air pressure in the vacuum chamber is maintained between 10Pa and 30Pa, the air pressure in the second-stage pre-pumping chamber is maintained between 30Pa and 200Pa, and the air pressure in the first-stage pre-pumping chamber is maintained between 200Pa and 1200 Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420557532.0U CN204198847U (en) | 2014-09-25 | 2014-09-25 | Silica gel cable surface vacuum plating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420557532.0U CN204198847U (en) | 2014-09-25 | 2014-09-25 | Silica gel cable surface vacuum plating unit |
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| Publication Number | Publication Date |
|---|---|
| CN204198847U true CN204198847U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420557532.0U Expired - Fee Related CN204198847U (en) | 2014-09-25 | 2014-09-25 | Silica gel cable surface vacuum plating unit |
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| Country | Link |
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| CN (1) | CN204198847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213095A (en) * | 2014-09-25 | 2014-12-17 | 昆山彰盛奈米科技有限公司 | Continuous coating device for coating layer on surface of cable and method thereof |
-
2014
- 2014-09-25 CN CN201420557532.0U patent/CN204198847U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213095A (en) * | 2014-09-25 | 2014-12-17 | 昆山彰盛奈米科技有限公司 | Continuous coating device for coating layer on surface of cable and method thereof |
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