CN115261799B - Surface layer vacuum coating process of temperature control valve - Google Patents
Surface layer vacuum coating process of temperature control valve Download PDFInfo
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- CN115261799B CN115261799B CN202210924989.XA CN202210924989A CN115261799B CN 115261799 B CN115261799 B CN 115261799B CN 202210924989 A CN202210924989 A CN 202210924989A CN 115261799 B CN115261799 B CN 115261799B
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- control valve
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- 238000001771 vacuum deposition Methods 0.000 title claims abstract description 52
- 239000002344 surface layer Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000000576 coating method Methods 0.000 claims abstract description 106
- 239000011248 coating agent Substances 0.000 claims abstract description 103
- 238000007599 discharging Methods 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 52
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims abstract description 21
- 239000007888 film coating Substances 0.000 claims abstract description 16
- 238000009501 film coating Methods 0.000 claims abstract description 16
- 238000007747 plating Methods 0.000 claims description 22
- 239000003973 paint Substances 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 15
- 239000011247 coating layer Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims description 4
- 238000003379 elimination reaction Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 230000037452 priming Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 238000000605 extraction Methods 0.000 abstract 1
- 238000009504 vacuum film coating Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
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- 230000002829 reductive effect Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
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- 238000001746 injection moulding Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a vacuum coating process for a surface layer of a temperature control valve, and belongs to the technical field of coating. The vacuum coating process for the surface layer of the temperature control valve comprises a coating box, wherein openings are formed in two sides of the coating box, sealing plates are arranged in the two openings, two partition plates are movably arranged in the coating box, a feeding cavity, a coating cavity and a discharging cavity are sequentially formed among two partition plates, the two sealing plates and a box body of the coating box, vacuum pumps are arranged on the upper sides of the feeding cavity, the coating cavity and the discharging cavity, material conveying mechanisms are arranged in the feeding cavity and the discharging cavity, the material conveying mechanisms are connected with the sealing plates, and a material feeding mechanism and a material discharging mechanism are arranged in the coating cavity and are connected with the partition plates; the invention maintains the excellent performance of the existing metal coating, ensures the accurate reflection of the temperature bulb to the indoor environment, completes the operation of taking and placing materials during the film coating, avoids the material placing and taking again and vacuum extraction after the vacuum film coating, reduces the operation time length and effectively improves the production quality and the production efficiency of the temperature control valve.
Description
Technical Field
The invention relates to the technical field of coating, in particular to a temperature control valve surface layer vacuum coating process.
Background
The temperature control valve controls the inlet flow of a heat exchanger, an air conditioning unit or other heat and cold utilization equipment and primary heat (cold) medium so as to control the outlet temperature of the equipment; when the load changes, the flow is regulated by changing the opening degree of the valve, so that the influence caused by load fluctuation is eliminated, and the temperature is restored to the set value. In the prior art, the temperature control valve adopts an electroplating process for electroplating a chromium metal layer on the surface layer of the temperature control valve, the electroplating process is a method for paving a metal layer on a conductor by utilizing the principle of electrolysis, the electroplating process refers to a surface processing method for forming a plating layer by taking a plated base metal as a cathode in a salt solution containing the pre-plated metal and depositing cations of the pre-plated metal in the plating solution on the surface of the base metal through electrolysis.
In the prior art, the invention patent with the patent application number of CN201911065185.3 discloses a vacuum coating process for a surface layer of a temperature control valve, and a layer of nonmetallic material with lower heat conduction coefficient is vacuum-evaporated and coated on the surface layer of the temperature control valve, so that the temperature control head not only maintains the excellent performance of the existing metal coating layer, but also ensures the accurate reflection of the temperature of the indoor environment by a temperature bulb. However, when the existing vacuum coating equipment is used for coating a film on a temperature control valve, the temperature control valve is placed on a container, a batch of containers with the temperature control valve are placed in a film coating machine for coating, after the film coating is finished, a cabin door is opened to take out the temperature control valve, and a vacuum pump needs to work for a long time each time to vacuumize the interior of the film coating machine by one switch operation, so that the film coating efficiency is influenced, a great amount of time is wasted, the film coating work efficiency of the temperature control valve is reduced, and the production efficiency of the temperature control valve is influenced.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a temperature control valve surface layer vacuum coating process.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a temperature control valve top layer vacuum coating process, includes the coating film case, the both sides of coating film case all are provided with the opening, two the opening part all is provided with the closing plate, the coating film incasement activity is provided with two baffles, two be formed gradually feed chamber, coating film chamber and ejection of compact chamber between baffle, two closing plate and the box of coating film case, the upside in feed chamber, coating film chamber and ejection of compact chamber all is provided with the vacuum pump, feed chamber and ejection of compact intracavity all are provided with feeding mechanism, feeding mechanism links to each other with the closing plate, the coating film intracavity is provided with feed mechanism, feed mechanism links to each other with the baffle.
Preferably, the material conveying mechanism comprises a first screw rod which is rotatably arranged in the coating box, a first sleeve is arranged on the first screw rod, the first sleeve is fixedly connected with the sealing plate, a first bevel gear is arranged at the bottom of the first screw rod, a second bevel gear is connected to the outer side of the first bevel gear in a meshed mode, a second screw rod is connected to the second bevel gear, the second screw rod is rotatably arranged in the coating box through a support, a second sleeve is arranged on the second screw rod, a material conveying plate is fixedly connected to the second sleeve, the material conveying mechanism further comprises a first motor fixedly arranged on the coating box, and the output end of the first motor penetrates through the coating box and is connected with the first screw rod.
Preferably, the feeding and discharging mechanism comprises fixed blocks fixedly arranged on the inner walls of two sides of the coating cavity, each fixed block is rotationally connected with a rotating rod at two ends, each rotating rod is provided with a chain wheel, two chains are arranged between the chain wheels, connecting pieces are arranged on two sides of the chains, two connecting pieces are arranged at one ends, far away from the chains, of the connecting pieces respectively and are provided with a feeding plate and a discharging plate, a second motor is arranged on the outer side of the coating box, and the output end of the second motor penetrates through the coating box and is connected with the rotating rods.
Preferably, the two connecting pieces comprise connecting blocks fixedly arranged on the chain, each connecting block is connected with a connecting rod, and the two connecting rods are respectively movably connected with the feeding plate and the discharging plate.
Preferably, the feeding and discharging mechanism further comprises reciprocating screw rods rotatably arranged at two sides of the film coating cavity, each reciprocating screw rod is connected with a third sleeve in a threaded mode, the third sleeves are connected with the partition plate, a fourth bevel gear is arranged at the bottom of each reciprocating screw rod, and a third bevel gear meshed and connected with the fourth bevel gear is arranged on each rotating rod.
Preferably, the feeding plate and the discharging plate are provided with first grooves matched with each other, the feeding plate in the feeding cavity is provided with second grooves matched with the feeding plate, and the feeding plate in the discharging cavity is provided with third grooves matched with the discharging plate.
Preferably, the feeding plate and the discharging plate are respectively provided with a moving block, the outer sides of the moving blocks are sleeved with sliding blocks, the moving blocks are slidably connected with the sliding blocks, the fixed blocks are provided with sliding grooves matched with the sliding blocks, and the sliding blocks are slidably connected in the sliding grooves.
Preferably, a plurality of sliding grooves are further formed in the coating box, and the sealing plate and the partition plate are both in sliding connection with the sliding grooves.
Preferably, the method comprises the following steps:
s1: cleaning the surface, namely cleaning the surface layer of the temperature control valve until the surface layer is free of impurities;
s2: static electricity elimination, namely carrying out antistatic treatment on the surface layer of the temperature control valve to eliminate static electricity;
s3: setting a coating cavity into a vacuum state through a vacuum pump, placing a temperature control valve to be coated in a container, taking in the temperature control valve by a feeding cavity, closing a sealing plate, setting the feeding cavity and a discharging cavity into vacuum, then feeding the temperature control valve in the feeding cavity into the coating cavity through a feeding and discharging mechanism for coating operation, heating a coating material under the vacuum condition, and gradually forming a nonmetallic coating layer with uniform thickness, wherein atoms and molecules of the coating material fly to the surface of the temperature control valve and are adsorbed;
s4: during the coating of the temperature control valves, the sealing plate is opened again, the next batch of temperature control valves to be coated are placed in the feeding cavity, then the sealing plate is closed, the feeding cavity and the discharging cavity are set to be in a vacuum state through the vacuum pump, then after the coating of the temperature control valves in the coating cavity is finished, the feeding and discharging mechanism acts to send the coated temperature control valves to the material conveying plate of the discharging cavity and the temperature control valves to be coated in the feeding cavity are connected into the coating cavity, and the batch of temperature control valves are subjected to coating operation;
s5: and (4) repeating the operation during the film coating in the step S4, enabling the material conveying mechanism to act, opening the sealing plate, enabling the temperature control valve to be coated to be arranged in the feeding cavity, enabling the temperature control valve arranged in the discharging cavity after film coating to be sent out by the material conveying plate, closing the sealing plate, and setting the feeding cavity and the discharging cavity to be in a vacuum state to wait for film coating of the temperature control valve in the next batch.
Preferably, the method further comprises priming paint spraying and finishing paint spraying, wherein before vacuum coating, the priming paint is uniformly sprayed on the plastic surface layer of the temperature control valve by adopting an atomization nozzle to form a smooth and flat surface for providing a coating substrate with extremely high flatness for subsequent vacuum coating; after the vacuum coating, the spray finishing paint is used for protecting the vacuum coating by forming a layer of finishing paint on the vacuum coating layer.
Compared with the prior art, the invention provides a temperature control valve surface layer vacuum coating process, which has the following beneficial effects:
1. according to the surface vacuum coating process of the temperature control valve, the operation of taking and discharging the temperature control valve to be coated is completed in the coating period, the operations of taking and discharging materials and extracting vacuum after vacuum coating are avoided, the operation and the vacuumizing time are effectively shortened, and therefore the production efficiency of the temperature control valve is improved.
2. According to the surface vacuum coating process of the temperature control valve, the feeding and discharging mechanism is arranged in the coating cavity, so that the temperature control valve after coating can be fed onto the material conveying plate of the discharging cavity and the temperature control valve to be coated in the feeding cavity is connected into the coating cavity when the feeding and discharging mechanism acts, and the transfer speed of the temperature control valve in the coating process is improved.
3. According to the vacuum coating process for the surface layer of the temperature control valve, the material conveying mechanisms are arranged in the material feeding cavity and the material discharging cavity, so that when the temperature control valve to be coated is placed in the material feeding cavity, the temperature control valve after coating can be moved out of the material discharging cavity, the taking and placing efficiency of the temperature control valve is further improved, and the production efficiency of products is improved.
4. According to the vacuum coating process for the surface layer of the temperature control valve, the nonmetallic coating layer is arranged on the outer side of the temperature control valve, so that the excellent performance of the existing metal coating layer is maintained, the accurate reflection of the temperature bulb on the indoor environment temperature is ensured, the requirements of EN215 standard 6.4.1.12 clause are met, and the production quality and the use effect of the temperature control valve are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of part A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic diagram of a cross-sectional structure of the present invention;
FIG. 5 is a schematic view of the structure of the feed chamber of the present invention;
FIG. 6 is a schematic diagram of a feeding and discharging mechanism according to the present invention;
FIG. 7 is an enlarged schematic view of portion B of FIG. 6 in accordance with the present invention;
FIG. 8 is a second schematic structural view of the feeding and discharging mechanism of the present invention;
FIG. 9 is a schematic view of the structure of the feeding plate and the discharging plate of the present invention;
FIG. 10 is an enlarged schematic view of portion C of FIG. 9 in accordance with the present invention;
FIG. 11 is a schematic view of the structure of the feeding plate and the feeding plate according to the present invention.
In the figure: 1. a film plating box; 2. a sealing plate; 3. a partition plate; 4. a feed chamber; 5. a film coating cavity; 6. a discharge cavity; 7. a vacuum pump; 8. a first screw rod; 801. a first sleeve; 802. a first bevel gear; 9. a second screw rod; 901. a second sleeve; 902. a second bevel gear; 10. a first motor; 11. a material conveying plate; 111. a second groove; 112. a third groove; 12. a fixed block; 121. a rotating lever; 1211. a third bevel gear; 122. a sprocket; 123. a chain; 13. a connecting piece; 131. a connecting block; 132. a connecting rod; 14. a feed plate; 15. a discharge plate; 16. a second motor; 17. a reciprocating screw rod; 171. a third sleeve; 172. a fourth bevel gear; 18. a first groove; 19. a sliding groove; 191. a sliding block; 192. a moving block; 20. and a sliding groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1:
referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, a temperature control valve surface layer vacuum coating process comprises a coating box 1, openings are formed in two sides of the coating box 1, sealing plates 2 are arranged at two openings, two partition plates 3 are movably arranged in the coating box 1, a feeding cavity 4, a coating cavity 5 and a discharging cavity 6 are sequentially formed between the two partition plates 3, the two sealing plates 2 and the box body of the coating box 1, vacuum pumps 7 are arranged on the upper sides of the feeding cavity 4, the coating cavity 5 and the discharging cavity 6, material conveying mechanisms are arranged in the feeding cavity 4 and the discharging cavity 6, the material conveying mechanisms are connected with the sealing plates 2, material feeding and discharging mechanisms are arranged in the coating cavity 5, and the material feeding and discharging mechanisms are connected with the partition plates 3.
Specifically, through all setting up the opening in the both sides of coating film case 1, make feed inlet and discharge gate separately set up, make the temperature control valve enter into directly discharging from the discharge gate from the feed inlet in, accomplish the operation to getting the blowing promptly during the coating film, avoid getting the material, extracting vacuum again after the vacuum coating film, reduce the operation duration, effectively improve the production quality and the production efficiency of temperature control valve.
Example 2:
referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a temperature control valve surface layer vacuum coating process is the same as that of embodiment 1, further, the material conveying mechanism comprises a first screw rod 8 rotatably arranged in a coating box 1, a first sleeve 801 is arranged on the first screw rod 8, the first sleeve 801 is fixedly connected with a sealing plate 2, a first bevel gear 802 is arranged at the bottom of the first screw rod 8, a second bevel gear 902 is connected to the outer side of the first bevel gear 802 in a meshed manner, a second screw rod 9 is connected to the second bevel gear 902, the second screw rod 9 is rotatably arranged in the coating box 1 through a bracket, a second sleeve 901 is arranged on the second screw rod 9, a material conveying plate 11 is fixedly connected to the second sleeve 901, and the material conveying mechanism further comprises a first motor 10 fixedly arranged on the coating box 1, and the output end of the first motor 10 penetrates through the coating box 1 and is connected with the first screw rod 8.
Specifically, the output end of the first motor 10 is controlled to drive the first screw rod 8 to rotate by controlling the first motor 10 to operate, the first sleeve 801 on the first screw rod 8 moves upwards, the first sleeve 801 drives the sealing plate 2 to slide upwards in the coating box 1, openings on two sides of the coating box 1 are opened, the first screw rod 8 is meshed with the second bevel gear 902 on the second screw rod 9 through the first bevel gear 802 when rotating, the second screw rod 9 rotates, the second sleeve 901 on the outer side of the second screw rod drives the material conveying plate 11 to move out of the coating box 1, feeding of a temperature control valve to be coated and discharging of the temperature control valve after coating are achieved, the taking and placing efficiency of the temperature control valve is improved, and the production efficiency of products is improved.
Example 3:
referring to fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10 and fig. 11, a temperature control valve surface layer vacuum coating process is the same as that of embodiment 2, further, the feeding and discharging mechanism comprises fixed blocks 12 fixedly arranged on the inner walls of two sides of the coating cavity 5, two ends of each fixed block 12 are rotatably connected with rotating rods 121, a sprocket 122 is arranged on each rotating rod 121, a chain 123 is arranged between the two sprockets 122, two sides of the chain 123 are respectively provided with a connecting piece 13, one ends of the two connecting pieces 13 far away from the chain 123 are respectively provided with a feeding plate 14 and a discharging plate 15, the outer side of the coating box 1 is provided with a second motor 16, and the output end of the second motor 16 penetrates through the coating box 1 and is connected with the rotating rods 121.
Further, the two connecting pieces 13 each include a connecting block 131 fixedly arranged on the chain 123, each connecting block 131 is connected with a connecting rod 132, and the two connecting rods 132 are movably connected with the feeding plate 14 and the discharging plate 15 respectively.
Further, the feeding and discharging mechanism further comprises reciprocating screw rods 17 rotatably arranged at two sides of the film coating cavity 5, a third sleeve 171 is connected to each reciprocating screw rod 17 in a threaded mode, the third sleeve 171 is connected with the partition plate 3, a fourth bevel gear 172 is arranged at the bottom of the reciprocating screw rod 17, and a third bevel gear 1211 in meshed connection with the fourth bevel gear 172 is arranged on the rotating rod 121.
Further, the feeding plate 14 and the discharging plate 15 are provided with a first groove 18 matched with each other, the feeding plate 11 in the feeding cavity 4 is provided with a second groove 111 matched with the feeding plate 14, and the feeding plate 11 in the discharging cavity 6 is provided with a third groove 112 matched with the discharging plate 15.
Specifically, when the feeding and discharging mechanism does not work, the feeding plate 14, the discharging plate 15 and the feeding plates 11 on two sides are positioned on the same plane, and at the moment, the connecting piece 13 is arranged in the middle of the side edge of the chain 123, when the temperature control valve in the coating box 1 needs to be transported, the output end of the second motor 16 drives the rotating rod 121 to rotate by controlling the second motor 16, the chain wheel 122 is driven to drive the chain 123 when the rotating rod 121 rotates, the chain 123 drives the feeding plate 14 and the discharging plate 15 connected with the chain 123 to move through the connecting piece 13, the rotating rod 121 is meshed with the fourth bevel gear 172 through the third bevel gear 1211, the third sleeve 171 moves upwards on the reciprocating screw 17, the third sleeve 171 drives the partition plate 3 to move upwards, the feeding plate 14 moves along with the chain 123 through the connecting piece 13, the middle part of the side of the chain wheel 122 moves downwards to the lower side of the chain wheel 122 and continuously moves leftwards, so that the feeding plate 14 enters the feeding cavity 4 and is arranged on the lower side of the material conveying plate 11 of the cavity, along with the continuous operation of the second motor 16, the feeding plate 14 moves downwards to the middle part of the side of the other chain wheel 122 from the lower side of the chain wheel 122, at the moment, the feeding plate 14 is parallel to the material conveying plate 11, the feeding plate 14 contacts with a temperature control valve to be coated in the feeding cavity 4, the feeding plate 14 continuously drives along with the chain 123, and the feeding plate 14 moves to the upper side of the chain wheel 122 from the middle part of the side of the chain wheel 122 and supports the temperature control valve to be coated to move rightwards, so that the feeding plate 14 transfers the temperature control valve to be coated into the coating cavity 5; similarly, since the direction of movement of the discharging plate 15 is opposite to that of the feeding plate 14, the discharging plate 15 moves up from the middle of the left side edge of the chain 123 to drive the coated temperature control valve to move right continuously until the coated temperature control valve is fed into the discharging cavity 6, then the discharging plate 15 moves to the middle of the right side of the sprocket 122 along with the chain 123, at this time, the discharging plate 15 is parallel to the feeding plate 11 in the discharging cavity 6, the feeding plate 11 supports the coated temperature control valve, the discharging plate 15 which moves down continuously moves down to the lower side from the middle of the right side of the sprocket 122 and moves left continuously until the reciprocating screw 17 moves to the initial position, and the third sleeve 171 drives the partition plate 3 to move up and down in the continuous rotation process, so that the coating cavity 5 is sealed again.
Example 4:
referring to fig. 9 and 10, in a vacuum coating process for a surface layer of a temperature control valve, as in embodiment 3, further, moving blocks 192 are disposed on the feeding plate 14 and the discharging plate 15, sliding blocks 191 are sleeved outside the moving blocks 192, the moving blocks 192 are slidably connected to the sliding blocks 191, sliding grooves 19 matched with the sliding blocks 191 are formed in the fixed blocks 12, and the sliding blocks 191 are slidably connected in the sliding grooves 19.
Specifically, in the process of moving along with the chain 123, the discharging plate 15 and the feeding plate 14 drive the sliding block 191 to slide in the sliding groove 19 through the moving block 192, and in the process of moving up and down the discharging plate 15 and the feeding plate 14, the moving block 192 slides in the sliding block 191, so that the moving stability of the discharging plate 15 and the feeding plate 14 is improved.
Example 5:
referring to fig. 5, in a vacuum coating process for a surface layer of a temperature control valve, the same as in embodiment 4, further, a plurality of sliding grooves 20 are further formed in the coating box 1, and the sealing plate 2 and the partition plate 3 are both slidably connected in the sliding grooves 20.
Specifically, the sealing plate 2 and the partition plate 3 slide in the chute 20 all the time in the process of moving up and down in the film plating box 1, so that the moving stability of the sealing plate 2 and the partition plate 3 is improved, and the overall tightness of the film plating box 1 needs to be ensured due to the vacuum film plating mode, high-pressure-resistant and wear-resistant rubber pads can be adopted on the sealing plate 2 and the partition plate 3, so that the sealing effect of the film plating box 1 is ensured, which is the prior art known to the person skilled in the art, and is not repeated herein.
Example 6:
referring to fig. 1, 2, 4, 5 and 6, a temperature controlled valve surface layer vacuum coating process, similar to that of example 1, further comprises the following steps:
s1: cleaning the surface, namely cleaning the surface layer of the temperature control valve until the surface layer is free of impurities;
s2: static electricity elimination, namely carrying out antistatic treatment on the surface layer of the temperature control valve to eliminate static electricity;
s3: setting a coating cavity 5 in a vacuum state through a vacuum pump 7, placing a temperature control valve to be coated in a container, taking in the temperature control valve by a feeding cavity 4, closing a sealing plate 2, setting the feeding cavity 4 and a discharging cavity 6 in vacuum, then sending the temperature control valve in the feeding cavity 4 into the coating cavity 5 through a feeding and discharging mechanism to carry out coating operation, heating a coating material under the vacuum condition, and gradually forming a nonmetallic coating layer with uniform thickness by leading atoms and molecules of the coating material to fly to the surface of the temperature control valve and be adsorbed;
s4: during the coating of the temperature control valves, the sealing plate 2 is opened again, the next batch of temperature control valves to be coated are placed in the feeding cavity 4, then the sealing plate 2 is closed, the feeding cavity 4 and the discharging cavity 6 are set to be in a vacuum state through the vacuum pump 7, then after the coating of the temperature control valves in the coating cavity 5 is finished, the feeding and discharging mechanism acts to feed the coated temperature control valves to the material conveying plate 11 of the discharging cavity 6, and the temperature control valves to be coated in the feeding cavity 4 are connected into the coating cavity 5, so that the batch of temperature control valves are subjected to coating operation;
s5: in the film plating period of the step S4, the operation is repeated, the feeding mechanism acts, the sealing plate 2 is opened, the temperature control valve to be plated is arranged in the feeding cavity 4, the temperature control valve arranged in the discharging cavity 6 after film plating is sent out by the feeding plate 11, then the sealing plate 2 is closed, and the feeding cavity 4 and the discharging cavity 6 are set to be in a vacuum state to wait for the next batch of temperature control valve film plating.
Specifically, when cleaning the surface of the temperature control valve: the cleaning water can be adopted for washing and cleaning, the PH value of the cleaning water is between 6.5 and 7.5, the PH value is preferably 7.0, and the concentration of chloride ions in the water is 25ppm; when in flushing, the axis of the temperature control valve is perpendicular to the water flow direction and rotates at a constant speed around the axis so that each surface is fully contacted with the water flow section, the speed of the water flow is between 6.0 and 7.0m/s, and the flushing time is between 3.0 and 5.0 s; after the flushing is finished, air drying is carried out, preferably compressed air is adopted for air drying, the air flow from a compressor is maintained within 15 m/s-20 m/s, the air drying time of a temperature control valve is not less than 5min, and no impurities, flying dust and greasy dirt are attached to the surface appearance;
eliminating static electricity: the environment is humidified through the humidifier, the relative humidity of the environment is increased to 65%, the complete elimination of static electricity is ensured, and adverse effects of vacuum coating are avoided;
vacuum coating: heating and evaporating a non-metal plating material such as paint, particularly paint with low heat conductivity coefficient, to be formed into a film under vacuum condition so as to reduce or avoid heat conduction to the surface of the temperature control valve through the valve body, and interfering or influencing the accurate reflection of the temperature bulb to the environment; the melting point of the nonmetallic plating material is lower than that of the plastic surface layer, (the plastic surface layer of the temperature control valve is prevented from being heated, melted and deformed), and the method comprises the following three steps: (1) Pumping the vacuum degree in the coating chamber to be not higher than 10 < -2 > Pa, heating the nonmetallic plating material such as paint to be formed into a film under the vacuum condition, gradually evaporating the nonmetallic plating material after being heated, and allowing a large number of atoms and molecules to be gasified or changed in liquid-gas phase to escape from the surface of the liquid or solid plating material and simultaneously performing Brownian movement to be diffused in the coating chamber; (2) The gaseous atoms and molecules are dispersed in vacuum, and the atoms and molecules close to the surface layer of the temperature control valve are adsorbed on the surface layer of the temperature control valve, so that the concentration gradient of the atoms and molecules in the space between the nonmetallic plating material and the temperature control valve is sequentially reduced, and the atoms and molecules continuously fly to the temperature control valve; (3) The atoms and molecules of the nonmetallic plating material are deposited and grown on the surface layer of the temperature control valve to finally form the uniform nonmetallic plating layer with extremely high uniformity.
According to the invention, the water temperature influence test calculation is carried out by referring to the EN215 standard performance curve, so that the vacuum coating process of the surface layer of the temperature control valve can not only keep the excellent performance of the existing metal coating chromium layer, but also meet the requirements of EN215 standard 6.4.1.12 clause, namely, the test function of the temperature bulb is not influenced, after water at 30 ℃ passes through the valve, the temperature change of the water causes the temperature change of the valve body temperature bulb of the temperature control valve to be not more than 1 ℃, the excellent performance of the existing metal coating layer is kept, and the accurate reflection of the temperature bulb on the indoor environment temperature is ensured.
Example 7:
referring to fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, a process for vacuum coating a surface layer of a temperature control valve is the same as that of embodiment 6, and further comprises a primer spraying process and a top coating process, wherein before vacuum coating, the primer spraying process adopts an atomizing nozzle to uniformly spray the atomized primer on a plastic surface layer of the temperature control valve to form a smooth and flat surface for providing a coating substrate with extremely high flatness for subsequent vacuum coating; after the vacuum coating, the spray finishing paint is used for protecting the vacuum coating by forming a layer of finishing paint on the vacuum coating layer.
Specifically, when vacuum coating is carried out on the surface layer of the temperature control valve, a layer of primer is sprayed on the surface layer of the temperature control valve in advance, and then vacuum coating operation is carried out; because the temperature control valve is provided with a plastic surface layer, the flatness of the surface layer often does not meet the requirements of a vacuum coating process, and the reason is that: on one hand, air bubbles and organic gas can remain in an injection molding process of the plastic surface layer during manufacturing, and on the other hand, water vapor in air can be sucked during placing, so that the surface flatness of the temperature control valve is insufficient due to the combined effect; the bonding force between the subsequent coating layer and the plastic surface layer is increased by spraying the primer; secondly, in order to seal the temperature control valve matrix, the influence of plastic gassing on the quality of a coating layer in the subsequent coating process is reduced; thirdly, the smoothness of the plastic surface layer is further improved. Specifically, when the primer is sprayed, the atomized primer is uniformly sprayed on the surface layer of the temperature control valve by adopting an atomization nozzle in a windless environment at the temperature of 20 ℃ in a normal temperature environment, so that a smooth and flat surface is formed, bubbles and blisters existing in the temperature control valve are prevented from being generated by the formation of the primer, and a coating matrix with extremely high flatness is provided for vacuum coating. After the temperature control valve is coated, the surface paint is sprayed, namely, a layer of surface paint is formed on the vacuum coating layer, so that the vacuum coating is protected, and the nonmetallic coating layer which is easy to scratch, easy to pollute and not wear-resistant is prevented from being damaged in the use process. After the primer or the finish paint is sprayed, a temperature control valve of the undried paint layer is placed into a baking oven to be dried, the drying of the paint layer is accelerated, the baking temperature in the baking oven is 60-80 ℃, and the baking time is optimal for 2-3 hours, so that the optimal paint layer is obtained.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The vacuum coating process for the surface layer of the temperature control valve is characterized in that openings are formed in two sides of a coating box (1), sealing plates (2) are arranged at the openings, two partition plates (3) are movably arranged in the coating box (1), a feeding cavity (4), a coating cavity (5) and a discharging cavity (6) are sequentially formed among the partition plates (3), the two sealing plates (2) and the box body of the coating box (1), vacuum pumps (7) are arranged on the upper sides of the feeding cavity (4), the coating cavity (5) and the discharging cavity (6), feeding mechanisms are arranged in the feeding cavity (4) and the discharging cavity (6), the feeding mechanisms are connected with the sealing plates (2), feeding mechanisms are arranged in the coating cavity (5), and the feeding mechanisms are connected with the partition plates (3);
the material conveying mechanism comprises a first screw rod (8) which is rotatably arranged in a film plating box (1), a first sleeve (801) is arranged on the first screw rod (8), the first sleeve (801) is fixedly connected with a sealing plate (2), a first bevel gear (802) is arranged at the bottom of the first screw rod (8), a second bevel gear (902) is connected to the outer side of the first bevel gear (802) in a meshed manner, a second screw rod (9) is connected to the second bevel gear (902), the second screw rod (9) is rotatably arranged in the film plating box (1) through a bracket, a second sleeve (901) is arranged on the second screw rod (9), a material conveying plate (11) is fixedly connected to the second sleeve (901), the material conveying mechanism further comprises a first motor (10) which is fixedly arranged on the film plating box (1), and the output end of the first motor (10) penetrates through the film plating box (1) and is connected with the first screw rod (8);
the feeding and discharging mechanism comprises fixed blocks (12) fixedly arranged on the inner walls of two sides of a coating cavity (5), two ends of each fixed block (12) are respectively connected with a rotating rod (121) in a rotating mode, a chain wheel (122) is arranged on each rotating rod (121), a chain (123) is arranged between the two chain wheels (122), connecting pieces (13) are respectively arranged on two sides of the chain (123), one ends, far away from the chain (123), of the two connecting pieces (13) are respectively provided with a feeding plate (14) and a discharging plate (15), a second motor (16) is arranged on the outer side of the coating box (1), and the output end of the second motor (16) penetrates through the coating box (1) and is connected with the rotating rods (121);
the feeding and discharging mechanism further comprises reciprocating screw rods (17) rotatably arranged at two sides of the film coating cavity (5), each reciprocating screw rod (17) is connected with a third sleeve (171) in a threaded mode, the third sleeves (171) are connected with the partition plate (3), a fourth bevel gear (172) is arranged at the bottom of each reciprocating screw rod (17), and a third bevel gear (1211) meshed with the fourth bevel gear (172) is arranged on each rotating rod (121);
the feeding plate (14) and the discharging plate (15) are provided with first grooves (18) which are matched with each other, the feeding plate (11) in the feeding cavity (4) is provided with second grooves (111) which are matched with the feeding plate (14), and the feeding plate (11) in the discharging cavity (6) is provided with third grooves (112) which are matched with the discharging plate (15);
the feeding plate (14) and the discharging plate (15) are respectively provided with a moving block (192), the outer sides of the moving blocks (192) are sleeved with sliding blocks (191), the moving blocks (192) are connected onto the sliding blocks (191) in a sliding mode, the fixed blocks (12) are provided with sliding grooves (19) matched with the sliding blocks (191), and the sliding blocks (191) are connected into the sliding grooves (19) in a sliding mode;
the temperature control valve surface layer vacuum coating process comprises the following steps of:
s1: cleaning the surface, namely cleaning the surface layer of the temperature control valve until the surface layer is free of impurities;
s2: static electricity elimination, namely carrying out antistatic treatment on the surface layer of the temperature control valve to eliminate static electricity;
s3: setting a coating cavity (5) in a vacuum state through a vacuum pump (7), placing a temperature control valve to be coated in a container, taking in the temperature control valve by a feeding cavity (4), then closing a sealing plate (2), setting the feeding cavity (4) and a discharging cavity (6) in vacuum, then sending the temperature control valve in the feeding cavity (4) into the coating cavity (5) through a feeding and discharging mechanism for coating operation, heating a coating material under the vacuum condition, and gradually forming a nonmetallic coating layer with uniform thickness by leading atoms and molecules of the coating material to fly to the surface of the temperature control valve and be adsorbed;
s4: during the coating of the temperature control valve, the sealing plate (2) is opened again, the next batch of temperature control valve to be coated is placed in the feeding cavity (4), then the sealing plate (2) is closed, the feeding cavity (4) and the discharging cavity (6) are set to be in a vacuum state through the vacuum pump (7), and then after the coating of the temperature control valve in the coating cavity (5) is finished, the feeding and discharging mechanism acts to send the coated temperature control valve to the material conveying plate (11) of the discharging cavity (6) and to connect the temperature control valve to be coated in the feeding cavity (4) into the coating cavity (5), so that coating operation is performed;
s5: and (3) repeating the operation during the film coating in the step S4, enabling the material conveying mechanism to act, opening the sealing plate (2), enabling the temperature control valve to be coated to be arranged in the feeding cavity (4), enabling the temperature control valve arranged in the discharging cavity (6) after film coating to be sent out by the material conveying plate (11), closing the sealing plate (2), and setting the feeding cavity (4) and the discharging cavity (6) to be in a vacuum state and waiting for the next batch of temperature control valve film coating.
2. The vacuum coating process for the surface layer of the temperature control valve according to claim 1, wherein the two connecting pieces (13) comprise connecting blocks (131) fixedly arranged on a chain (123), each connecting block (131) is connected with a connecting rod (132), and the two connecting rods (132) are respectively movably connected with the feeding plate (14) and the discharging plate (15).
3. The vacuum coating process for the surface layer of the temperature control valve according to claim 1, wherein a plurality of sliding grooves (20) are further formed in the coating box (1), and the sealing plate (2) and the partition plate (3) are both in sliding connection with the sliding grooves (20).
4. The process for vacuum coating a surface layer of a temperature control valve according to claim 1, further comprising priming paint spraying and finishing paint spraying, wherein before vacuum coating, the priming paint is uniformly sprayed on the plastic surface layer of the temperature control valve by adopting an atomization nozzle to form a smooth and flat surface for providing a coating substrate with extremely high flatness for subsequent vacuum coating; after the vacuum coating, the spray finishing paint is used for protecting the vacuum coating by forming a layer of finishing paint on the vacuum coating layer.
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| GB1604056A (en) * | 1977-01-06 | 1981-12-02 | Mitsubishi Electric Corp | Process for forming reflective metallic film and thermal absorption film on inner surface of face panel and apparatus therefor |
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| CN110629167A (en) * | 2019-11-08 | 2019-12-31 | 江西艾芬达暖通科技股份有限公司 | Surface layer vacuum coating process for temperature control valve |
| CN212800526U (en) * | 2020-07-22 | 2021-03-26 | 派珂纳米科技(苏州)有限公司 | Horizontal vacuum coating machine |
| CN213476141U (en) * | 2020-09-16 | 2021-06-18 | 维达力实业(深圳)有限公司 | Film coating equipment |
| CN214655228U (en) * | 2020-12-16 | 2021-11-09 | 武汉摩擦力信息技术有限公司 | Continuous multi-cavity vacuum coating machine |
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| GB1604056A (en) * | 1977-01-06 | 1981-12-02 | Mitsubishi Electric Corp | Process for forming reflective metallic film and thermal absorption film on inner surface of face panel and apparatus therefor |
| CN209397258U (en) * | 2018-12-07 | 2019-09-17 | 沈阳爱科斯科技有限公司 | Continuous vacuum coating device and coating system |
| CN110629167A (en) * | 2019-11-08 | 2019-12-31 | 江西艾芬达暖通科技股份有限公司 | Surface layer vacuum coating process for temperature control valve |
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