CN117732701A - Surface coating process for plastic hardware products and automatic spraying production line - Google Patents
Surface coating process for plastic hardware products and automatic spraying production line Download PDFInfo
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- CN117732701A CN117732701A CN202410140042.9A CN202410140042A CN117732701A CN 117732701 A CN117732701 A CN 117732701A CN 202410140042 A CN202410140042 A CN 202410140042A CN 117732701 A CN117732701 A CN 117732701A
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- 238000005507 spraying Methods 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 239000003973 paint Substances 0.000 claims abstract description 57
- 239000007921 spray Substances 0.000 claims abstract description 47
- 238000007639 printing Methods 0.000 claims abstract description 43
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 238000003848 UV Light-Curing Methods 0.000 claims description 23
- 238000001723 curing Methods 0.000 claims description 18
- 241000533950 Leucojum Species 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002957 persistent organic pollutant Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000001788 irregular Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001548 drop coating Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention relates to a plastic hardware product surface coating process and equipment, wherein the coating process comprises the following steps: step a, cleaning and static electricity removing treatment of the surface of a workpiece: step b, spraying the surface of the workpiece by using a piezoelectric spray printing device special for paint and matching a manipulator; c, performing heat leveling to form a smooth paint film layer on the surface of the workpiece; step d, solidifying and shaping the workpiece through UV solidifying equipment; and e, detecting a finished product. According to the product paint spraying method and device, the piezoelectric type spray printing device is used for printing and spraying the product, so that the spraying precision can be improved, the problem that a non-spraying surface is covered by paint is avoided, the method and device are suitable for spraying various regular or irregular products, the paint is accurately covered on the surface of the product, the paint utilization rate can reach more than 99%, the production efficiency can be improved, the production cost is saved, and the emission is reduced and the environment is protected.
Description
Technical field:
the invention relates to the technical field of surface treatment processes and equipment, in particular to a plastic hardware product surface coating process and an automatic spraying production line.
The background technology is as follows:
at present, methods such as air spraying, electrostatic spraying and the like are mostly adopted for spraying paint on plastic and hardware surfaces, and the methods generally need to be carried out in a professional spray booth, so that extremely large paint mist can be generated in the spraying process, a large amount of purifying materials are required to be consumed for treatment, the paint utilization rate is low, the environmental pollution is large, and the harm to human bodies is large. Furthermore, in the spraying process, the surface of the workpiece is required to be covered with a film at the position where spraying is not required or covered and shielded by a die, so that defective products are easy to cause, the spraying precision is low, the process is complex, and the production efficiency is low.
In addition, ultraviolet curing processes are often used in surface treatment, wherein the processes firstly convey a workpiece to a curing furnace through a conveying mechanism and then carry out ultraviolet curing processing, UV energy is required to be high in curing process, but the temperature cannot be too high, in actual operation, a cooling device is required to be additionally arranged on a UV lamp for preventing the temperature from being too high, a simple air cooling mode is generally adopted, heat of the UV lamp is taken away through cold air, but the existing air cooling mode is difficult to regulate and control, and the temperature control accuracy is insufficient, so that the working condition of the UV lamp is unstable.
The invention comprises the following steps:
the invention aims to overcome the defects of the existing products and provides a plastic hardware product surface coating process and an automatic spraying production line.
The technical scheme adopted by the invention is as follows: the surface coating process of the plastic hardware product comprises the following steps:
step a, cleaning and static electricity removing treatment of the surface of a workpiece: cleaning the surface of a workpiece through snowflake purifying equipment to remove particles and organic pollutants attached to the surface of the workpiece; meanwhile, removing static electricity on the surface of the workpiece by utilizing ion wind;
b, transferring the workpiece treated in the step a to a spraying station through a manipulator, and spraying the surface of the workpiece by utilizing a piezoelectric type spraying device special for paint and the cooperation of the manipulator; the spraying operation adopts UV paint with the solid content of 40-50 percent;
c, transferring the workpiece to a hot leveling station for standing through a manipulator after the spraying of the workpiece is finished, and drying and leveling the surface of the workpiece by using baking equipment for 3-5min, wherein the hot leveling temperature is 50+/-5 ℃ so as to form a smooth paint film layer on the surface of the workpiece;
step d, transferring the workpiece from the hot leveling station to a UV curing station through a manipulator, and curing and shaping the workpiece through UV curing equipment;
and e, detecting a finished product.
In the coating process, the caliber of the cleaning nozzle of the snow purifying device in the step a is 4-8mm, the spraying pressure is 4-8Bar, and CO is generated 2 The size of snowflake crystal is 0.3 μm-1 μm, the cleaning power is 1-2Kw, and the CO liquid loss is less than 0.8kg/min; the distance between the ion fan and the surface of the workpiece is 300mm plus or minus 50mm, the air output is 40-60CFM, and the coverage area is 40cm multiplied by 60cm 2 The ion balance (0 V+/-10V) of the surface of the product can be completed in less than 1.2 seconds;
the special piezoelectric spray printing device for the paint in the step b comprises an X-direction moving module, a Y-direction moving module arranged on the X-direction moving module and a Z-direction moving module arranged on the Y-direction moving module, wherein the X-direction moving module comprises two X-direction driving modules which are arranged in parallel and corresponding X-direction moving sliding tables, the Y-direction moving module is arranged on the two X-direction moving sliding tables, the Y-direction moving sliding table of the Y-direction moving module is provided with a longitudinal mounting surface and a transverse mounting surface, the Z-direction moving module is arranged on the longitudinal mounting surface, and a negative pressure paint supply assembly is arranged on the transverse mounting surface; the Z-direction moving sliding table of the Z-direction moving module is provided with a piezoelectric type spray printing head, the piezoelectric type spray printing head is connected with the negative pressure paint supply assembly, and the nozzle of the piezoelectric type spray printing head is arranged downwards; the injection angle of the nozzle has an included angle of 5-20 degrees with the vertical direction; the spraying environment is a ten-thousand-level clean room, the ambient temperature is 20 ℃, the humidity is 65%, and the thickness of the spray printing paint is set to be 16+/-1 mu m;
in the step d, the UV curing equipment adopts a UVT controllable UV light source, the curing energy is 400MJ, and the curing time is 10s, so as to ensure that the surface energy is absorbed to 12J/cm 2 。
The invention also provides an automatic spraying production line for plastic hardware product surface coating, which comprises an automatic manipulator arranged in the middle, and a feeding station, a spraying station, a hot leveling station and a UV curing station which are sequentially arranged around the automatic manipulator; wherein:
the feeding station is provided with a feeding positioning jig, the outer side of the feeding station is also provided with a workpiece surface cleaning station, and the workpiece surface cleaning station is internally provided with snowflake purifying equipment and an ion fan, and a conveying belt connected with the feeding station;
the special piezoelectric spray printing device for paint is arranged in the spraying station and comprises an X-direction moving module, a Y-direction moving module arranged on the X-direction moving module and a Z-direction moving module arranged on the Y-direction moving module, wherein the X-direction moving module comprises two X-direction driving modules which are arranged in parallel and corresponding X-direction moving sliding tables, the Y-direction moving module is arranged on the two X-direction moving sliding tables, the Y-direction moving sliding table of the Y-direction moving module is provided with a longitudinal mounting surface and a transverse mounting surface, the Z-direction moving module is arranged on the longitudinal mounting surface, and a negative pressure paint supply assembly is arranged on the transverse mounting surface; the Z-direction moving sliding table of the Z-direction moving module is provided with a piezoelectric type spray printing head, the piezoelectric type spray printing head is connected with the negative pressure paint supply assembly, and the nozzle of the piezoelectric type spray printing head is arranged downwards; the injection angle of the nozzle has an included angle of 5-20 degrees with the vertical direction;
the hot leveling station is provided with a baking furnace, a hot air circulating fan and an internal circulating fan, and the sprayed workpiece is dried through the baking furnace, so that the sprayed paint is primarily shaped to form a paint film; the baking oven is adopted to heat the air circulation fan and the internal circulation fan, so that the baking time can be shortened, the efficiency can be improved, and the internal circulation fan has the environment-friendly effects of energy conservation and emission reduction;
the UV curing station is provided with a UV curing machine, the UV curing machine comprises a case main body, an upper partition plate is arranged above the inside of the case main body and forms an air inlet chamber above the inside of the case main body, an air inlet is arranged on the outer wall of the air inlet chamber, and a high-efficiency filter communicated with the working area inside the case main body below is arranged in the middle of the upper partition plate; a first ultraviolet lamp and a second ultraviolet lamp are arranged at the top of an inner working area of the case main body and below the upper partition plate, and a main control box and an ultraviolet lamp power driver corresponding to the first ultraviolet lamp and the second ultraviolet lamp are arranged at the inner bottom of the case main body; the lamp housings of the first ultraviolet lamp and the second ultraviolet lamp are respectively connected with a ventilating duct, and temperature sensors are respectively arranged at the joints of the ventilating ducts and the lamp housings of the ultraviolet lamps and are electrically connected with a temperature controller arranged on the main control box; the ventilating duct is connected with an exhaust fan arranged at the bottom in the case main body, and the exhaust fan is also communicated with an exhaust pipe arranged outside the case main body; rotatable workpiece tables are also arranged below the inner working area of the case main body, the first ultraviolet lamp and the second ultraviolet lamp.
Further, in the automatic spraying production line, the following steps are included: the first ultraviolet lamp and the second ultraviolet lamp are arranged in a vertical state. The case body is provided with a pneumatic lifting door which can be opened and closed. The case main body is also provided with an observation window capable of perspective the inside. The bottom of the case main body is also provided with a standby air inlet and a standby air inlet valve.
According to the product paint spraying method and device, the piezoelectric type spray printing device is used for printing and spraying the product, so that the spraying precision can be improved, the problem that a non-spraying surface is covered by paint is avoided, the method and device are suitable for spraying various regular or irregular products, the paint is accurately covered on the surface of the product, the paint utilization rate can reach more than 99%, the production efficiency can be improved, the production cost is saved, and the emission is reduced and the environment is protected.
Description of the drawings:
FIG. 1 is a schematic diagram of the overall layout of a production line of the present invention;
fig. 2 and 3 are schematic structural diagrams of a piezoelectric jet printing device and schematic jet angle diagrams of jet printing head nozzles according to the present invention
Fig. 4 to 7 are schematic structural views of a curing machine according to the present invention.
The specific embodiment is as follows:
the invention will be further described with reference to specific examples and figures.
The invention relates to a plastic hardware product surface coating process, which is implemented by depending on a production line shown in fig. 1 in combination with the process shown in fig. 1, and comprises the following steps:
step a, cleaning and static electricity removing treatment of the surface of a workpiece: cleaning the surface of a workpiece through snowflake purifying equipment to remove particles and organic pollutants attached to the surface of the workpiece; meanwhile, removing static electricity on the surface of the workpiece by utilizing ion wind;
b, transferring the workpiece treated in the step a to a spraying station through a manipulator, and spraying the surface of the workpiece by utilizing a piezoelectric type spraying device special for paint and the cooperation of the manipulator; the spraying operation adopts UV paint with the solid content of 40-50 percent;
c, transferring the workpiece to a hot leveling station for standing through a manipulator after the spraying of the workpiece is finished, and drying and leveling the surface of the workpiece by using baking equipment for 3-5min, wherein the hot leveling temperature is 50+/-5 ℃ so as to form a smooth paint film layer on the surface of the workpiece;
step d, transferring the workpiece from the hot leveling station to a UV curing station through a manipulator, and curing and shaping the workpiece through UV curing equipment;
and e, detecting a finished product.
In the coating process, the caliber of the cleaning nozzle of the snow purifying device in the step a is 4-8mm, the spraying pressure is 4-8Bar, and CO is generated 2 The size of snowflake crystal is 0.3 μm-1 μm, the cleaning power is 1-2Kw, and the CO liquid loss is less than 0.8kg/min; the distance between the ion fan and the surface of the workpiece is 300mm plus or minus 50mm, the air output is 40-60CFM, and the coverage area is 40cm multiplied by 60cm 2 The ion balance (0 V+/-10V) of the surface of the product can be completed in less than 1.2 seconds;
the spraying environment of the special piezoelectric type spray printing device for the paint in the step b is a ten-thousand-level clean room, the environment temperature is 20 ℃, the humidity is 65%, and the thickness of the spray printing paint is set to be 16+/-1 mu m;
in the step d, the UV curing equipment adopts a UVT controllable UV light source, the curing energy is 400MJ, and the curing time is 10s, so as to ensure that the surface energy is absorbed to 12J/cm 2 。
As shown in fig. 1, the automatic spraying production line for surface coating of plastic hardware products comprises an automatic manipulator 10 arranged in the middle, and a feeding station 20, a spraying station 30, a heat leveling station 40 and a UV curing station 50 which are sequentially arranged around the automatic manipulator 10, wherein the four stations are arranged in a rectangular shape and distributed around the automatic manipulator 10; wherein:
the feeding station 20 is provided with a feeding positioning jig 2, a workpiece surface cleaning station 60 is arranged on the outer side of the feeding positioning jig, and snowflake purifying equipment 3 and an ion fan 4 and a conveying belt 21 connected with the feeding station 20 are arranged in the workpiece surface cleaning station 60; the workpiece disc with the workpiece is firstly placed into a workpiece surface cleaning station 20, and the surface of the workpiece is cleaned by a snowflake cleaning device 3 and an ion blower 4 to remove pollutants and particles attached to the surface of the workpiece and remove static electricity;
referring to fig. 2 and 3, the spraying station 30 is provided with a piezoelectric spray printing device 5 special for paint, the piezoelectric spray printing device 5 includes an X-direction moving module 51, a Y-direction moving module 52 mounted on the X-direction moving module 51, and a Z-direction moving module 53 mounted on the Y-direction moving module 52, wherein: the X-direction moving module 51 includes two X-direction driving modules 511 and corresponding X-direction moving sliding tables 512, and the two X-direction driving modules 511 are arranged in parallel through four supporting seats 513; the Y-moving module 52 is mounted on two X-moving sliding tables 512, the Y-moving sliding table 521 of the Y-moving module 52 has a longitudinal mounting surface 5211 and a transverse mounting surface 5212, the Z-moving module 53 is mounted on the longitudinal mounting surface 5211, and the negative pressure paint supply assembly 54 is mounted on the transverse mounting surface 5212; the piezoelectric spray printing head 55 is installed on the Z-direction moving sliding table 531 of the Z-direction moving module 53, the piezoelectric spray printing head 55 is connected with the negative pressure paint supply assembly 54, paint is supplied to the piezoelectric spray printing head 55 through the external paint supply tank of the negative pressure paint supply assembly 54 and the like, and the position is jointly moved along with the piezoelectric spray printing head 55 in the horizontal direction, and the nozzle of the piezoelectric spray printing head 55 is downwards arranged.
Referring to fig. 3, the spray angle of the spray nozzle 551 of the piezoelectric spray printing head 55 has an included angle of 5 ° to 20 ° with respect to the vertical direction. Therefore, the arc-shaped surface, the stepped surface and other irregular surfaces or drop surfaces can be sprayed under the cooperation of the automatic manipulator 1, and the spraying precision is high and the error is small.
The hot leveling station 40 is provided with a baking furnace 6, a hot air circulating fan 7 and an internal circulating fan 8, and the sprayed workpiece is dried through the baking furnace 6, so that the sprayed paint is primarily shaped to form a paint film; the baking furnace 6 is adopted to heat the air circulating fan 7 and the internal circulating fan 8, so that the baking time can be shortened, the efficiency can be improved, and the internal circulating fan 8 has the environment-friendly effects of energy conservation and emission reduction;
referring to fig. 4-7, the UV curing station 50 is provided with a UV curing machine 9, the UV curing machine 9 includes a chassis body 91, and the inner wall of the working area inside the chassis body 91 is provided with or coated with a reflective material; wherein: an upper partition plate 911 is arranged above the inside of the case main body 91, an air inlet chamber 9100 is formed above the upper partition plate 911, an air inlet 9101 is arranged on the outer wall of the air inlet chamber 9100, and a high-efficiency filter 92 communicated with the working area inside the lower case main body 91 is arranged in the middle of the upper partition plate 911; after air enters the air inlet chamber 9100 from the air inlet 9101, clean air enters the working area of the curing machine after passing through the high efficiency filter 92; a first ultraviolet lamp 931 and a second ultraviolet lamp 932 are installed at the top of the inner working region of the cabinet body 91 and below the upper partition plate 911, and a main control box 93 and an ultraviolet lamp power driver 933 corresponding to the first ultraviolet lamp 931 and the second ultraviolet lamp 932 are installed at the inner bottom of the cabinet body 91; the lamp housings of the first ultraviolet lamp 931 and the second ultraviolet lamp 932 are respectively connected with a ventilating duct 941, the connection parts of the ventilating ducts 941 and the lamp housings of the ultraviolet lamps are respectively provided with a temperature sensor 934, the temperature sensors 934 are electrically connected with a temperature controller 935 arranged on the main control box 93, and the temperature controller 935 can set working temperature according to requirements; the ventilation duct 941 is connected to an exhaust fan 94 installed at the bottom of the main body 91, and the exhaust fan 94 is further connected to an exhaust duct 942 provided outside the main body 91; the clean cold air entering from the top dissipates heat and controls temperature to the two ultraviolet lamps above, and the hot air is pumped out of the exhaust tube 942 through the exhaust fan 94; the working temperature of the ultraviolet lamp can be measured in real time through the temperature controller 935 and the temperature sensor 934, so that the lamp temperature is adjusted by controlling the air quantity and the air speed of the exhaust fan 94 according to the requirement, the automatic control is realized, the working temperature of the ultraviolet lamp is stable, and a better curing effect is obtained; a rotatable workpiece table 95 is further installed below the first ultraviolet lamp 931 and the second ultraviolet lamp 932 in the inner working region of the case main body 91; when the device works, a workpiece is placed on the rotatable workpiece table 95 and driven by the rotatable workpiece table 95 to rotate, and solidification is carried out under dynamic conditions, so that solidification time and effect of each part of the workpiece are more uniform, and the product quality is ensured;
further, the first ultraviolet lamp 931 and the second ultraviolet lamp 932 are arranged in a vertical state, i.e. one is arranged along the length direction, one is arranged along the width direction, and the rotatable workpiece table 95 and the reflective inner wall of the working area are dynamically arranged below the first ultraviolet lamp 931 and the second ultraviolet lamp 932, so that the workpieces can be uniformly illuminated everywhere, uniform solidification is realized, and different workpiece processing requirements can be met.
Further, the casing body 91 is provided with a retractable pneumatic lifting door 912, and the pneumatic lifting door 912 is opened to place and take out the workpiece, and the pneumatic lifting door 912 is closed in operation.
Further, the case body 91 is further provided with an observation window 913 capable of viewing the inside, so as to observe the solidification of the internal workpiece when needed;
further, a standby air inlet and a standby air inlet valve 914 are further arranged at the bottom of the case main body 91, and are opened when needed, so that the environment temperature of the workpiece is adjusted by air inlet from the lower part, and the inside can be quickly cooled by opening when the machine is stopped, so that equipment is protected. An orifice plate 915 is provided between the inner working area and the bottom area of the casing main body 91.
In the spray printing process, a pattern required by spray printing can be preset in a spray printer, a mechanical arm is adopted to realize that a product is put into a printing station of a spray printer device, a printing program of the spray printer is debugged, and the product is subjected to paint printing and spray coating through a spray head of the spray printer according to the spray ink pattern; the procedure matching can be carried out through a robot, so that each surface of the 3D product can be uniformly printed with the spraying paint. The spray printing process can realize high-drop coating, can realize 25mm drop coating for an arc-shaped curved surface, and can assist a flexible robot to adjust a product to finish surface coating for a right-angle anisotropic surface, wherein the drop can reach 50mm; the flying speed of the paint drops is high and reaches 10-12 m/s, the spray positioning is accurate, the spray printing angle error is as small as 1.3mrad, which is equivalent to the fact that the ejected paint drops can fall at a large target center of 10cm outside 50 meters, and the drop point precision of the paint drops is greatly ensured due to the small spray error.
According to the invention, the overall structure of the UV curing machine is reasonable in layout, the working temperature of the ultraviolet lamp can be measured in real time through the temperature controller and the temperature sensor, so that the lamp temperature is regulated by controlling the air quantity and the air speed of the exhaust fan according to the requirements, automatic control is realized, the working temperature of the ultraviolet lamp is stable, a better curing effect is obtained, and the UV curing machine is suitable for the processing requirements of spraying and curing of workpieces with various specifications and sizes.
In summary, according to the product paint spraying method provided by the invention, the piezoelectric type spray printing device is used for printing and spraying the product, so that the spraying precision can be improved, the problem that the non-spraying surface is covered by paint is avoided, the method is suitable for spraying various regular or irregular products, the paint is accurately covered on the surface of the product, the paint utilization rate can reach more than 99%, the production efficiency can be improved, the production cost is saved, and the emission is reduced and the environment is protected.
Claims (7)
1. A plastic hardware product surface coating process is characterized in that: the coating process comprises the following steps:
step a, cleaning and static electricity removing treatment of the surface of a workpiece: cleaning the surface of a workpiece through snowflake purifying equipment to remove particles and organic pollutants attached to the surface of the workpiece; meanwhile, removing static electricity on the surface of the workpiece by utilizing ion wind;
b, transferring the workpiece treated in the step a to a spraying station through a manipulator, and spraying the surface of the workpiece by utilizing a piezoelectric type spraying device special for paint and the cooperation of the manipulator; the spraying operation adopts UV paint with the solid content of 40-50 percent;
c, transferring the workpiece to a hot leveling station for standing through a manipulator after the spraying of the workpiece is finished, and drying and leveling the surface of the workpiece by using baking equipment for 3-5min, wherein the hot leveling temperature is 50+/-5 ℃ so as to form a smooth paint film layer on the surface of the workpiece;
step d, transferring the workpiece from the hot leveling station to a UV curing station through a manipulator, and curing and shaping the workpiece through UV curing equipment;
and e, detecting a finished product.
2. The plastic hardware product surface coating process according to claim 1, wherein:
the caliber of a cleaning nozzle of the snow purifying device in the step a is 4-8mm, the spraying pressure is 4-8Bar, and CO is generated 2 The size of snowflake crystal is 0.3 μm-1 μm, the cleaning power is 1-2Kw, and the CO liquid loss is less than 0.8kg/min; the distance between the ion fan and the surface of the workpiece is 300mm plus or minus 50mm, the air output is 40-60CFM, and the coverage area is 40cm multiplied by 60cm 2 The ion balance (0 V+/-10V) of the surface of the product can be completed in less than 1.2 seconds;
the special piezoelectric spray printing device for the paint in the step b comprises an X-direction moving module, a Y-direction moving module arranged on the X-direction moving module and a Z-direction moving module arranged on the Y-direction moving module, wherein the X-direction moving module comprises two X-direction driving modules which are arranged in parallel and corresponding X-direction moving sliding tables, the Y-direction moving module is arranged on the two X-direction moving sliding tables, the Y-direction moving sliding table of the Y-direction moving module is provided with a longitudinal mounting surface and a transverse mounting surface, the Z-direction moving module is arranged on the longitudinal mounting surface, and a negative pressure paint supply assembly is arranged on the transverse mounting surface; the Z-direction moving sliding table of the Z-direction moving module is provided with a piezoelectric type spray printing head, the piezoelectric type spray printing head is connected with the negative pressure paint supply assembly, and the nozzle of the piezoelectric type spray printing head is arranged downwards; the injection angle of the nozzle has an included angle of 5-20 degrees with the vertical direction; the spraying environment is a ten-thousand-level clean room, the ambient temperature is 20 ℃, the humidity is 65%, and the thickness of the spray printing paint is set to be 16+/-1 mu m;
in the step d, the UV curing equipment adopts a UVT controllable UV light source, the curing energy is 400MJ, and the curing time is 10s, so as to ensure that the surface energy is absorbed to 12J/cm 2 。
3. The utility model provides an automatic spraying production line of plastic hardware product surface coating which characterized in that: the automatic spraying production line comprises an automatic manipulator arranged in the middle, and a feeding station, a spraying station, a hot leveling station and a UV curing station which are sequentially arranged around the automatic manipulator; wherein the method comprises the steps of
The feeding station is provided with a feeding positioning jig, the outer side of the feeding station is also provided with a workpiece surface cleaning station, and the workpiece surface cleaning station is internally provided with snowflake purifying equipment and an ion fan, and a conveying belt connected with the feeding station;
the special piezoelectric spray printing device for paint is arranged in the spraying station and comprises an X-direction moving module, a Y-direction moving module arranged on the X-direction moving module and a Z-direction moving module arranged on the Y-direction moving module, wherein the X-direction moving module comprises two X-direction driving modules which are arranged in parallel and corresponding X-direction moving sliding tables, the Y-direction moving module is arranged on the two X-direction moving sliding tables, the Y-direction moving sliding table of the Y-direction moving module is provided with a longitudinal mounting surface and a transverse mounting surface, the Z-direction moving module is arranged on the longitudinal mounting surface, and a negative pressure paint supply assembly is arranged on the transverse mounting surface; the Z-direction moving sliding table of the Z-direction moving module is provided with a piezoelectric type spray printing head, the piezoelectric type spray printing head is connected with the negative pressure paint supply assembly, and the nozzle of the piezoelectric type spray printing head is arranged downwards;
the injection angle of the nozzle has an included angle of 5-20 degrees with the vertical direction;
the hot leveling station is provided with a baking furnace, a hot air circulating fan and an internal circulating fan;
the UV curing station is provided with a UV curing machine, the UV curing machine comprises a case main body, an upper partition plate is arranged above the inside of the case main body and forms an air inlet chamber above the inside of the case main body, an air inlet is arranged on the outer wall of the air inlet chamber, and a high-efficiency filter communicated with the working area inside the case main body below is arranged in the middle of the upper partition plate; a first ultraviolet lamp and a second ultraviolet lamp are arranged at the top of an inner working area of the case main body and below the upper partition plate, and a main control box and an ultraviolet lamp power driver corresponding to the first ultraviolet lamp and the second ultraviolet lamp are arranged at the inner bottom of the case main body; the lamp housings of the first ultraviolet lamp and the second ultraviolet lamp are respectively connected with a ventilating duct, and temperature sensors are respectively arranged at the joints of the ventilating ducts and the lamp housings of the ultraviolet lamps and are electrically connected with a temperature controller arranged on the main control box; the ventilating duct is connected with an exhaust fan arranged at the bottom in the case main body, and the exhaust fan is also communicated with an exhaust pipe arranged outside the case main body; rotatable workpiece tables are also arranged below the inner working area of the case main body, the first ultraviolet lamp and the second ultraviolet lamp.
4. The automated spraying production line for surface coating of plastic hardware product according to claim 3, wherein: the first ultraviolet lamp and the second ultraviolet lamp are arranged in a vertical state.
5. The automated spraying production line for surface coating of plastic hardware product according to claim 3, wherein: the case body is provided with a pneumatic lifting door which can be opened and closed.
6. The automated spraying production line for surface coating of plastic hardware product according to claim 3, wherein: the case main body is also provided with an observation window capable of perspective the inside.
7. The automated spraying production line for surface coating of plastic hardware product according to claim 3, wherein: the bottom of the case main body is also provided with a standby air inlet and a standby air inlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140042.9A CN117732701A (en) | 2024-01-31 | 2024-01-31 | Surface coating process for plastic hardware products and automatic spraying production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410140042.9A CN117732701A (en) | 2024-01-31 | 2024-01-31 | Surface coating process for plastic hardware products and automatic spraying production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117732701A true CN117732701A (en) | 2024-03-22 |
Family
ID=90252979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410140042.9A Pending CN117732701A (en) | 2024-01-31 | 2024-01-31 | Surface coating process for plastic hardware products and automatic spraying production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117732701A (en) |
-
2024
- 2024-01-31 CN CN202410140042.9A patent/CN117732701A/en active Pending
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