Integrated equipment for spraying and curing coating of Teflon air pipe

Abstract

The invention relates to Teflon air pipe coating spraying and curing integrated equipment which comprises a spraying mechanism used for spraying an air pipe, a curing mechanism used for curing the sprayed air pipe and a feeding and discharging mechanism used for feeding and discharging between the spraying mechanism and the curing mechanism, and relates to the technical field of Teflon air pipe machining. According to the integrated equipment for spraying and curing the coating of the Teflon air pipe, through the integrated design of the spraying mechanism, the curing box and the feeding and discharging mechanism, automation of the whole process of feeding, spraying, curing and discharging is achieved, efficiency leaps, the handling capacity per hour is increased to 18-20 pieces through double-station alternate operation, and the efficiency is improved by 300% compared with that of a traditional technology; and the air pipe is fixed to the feeding frame in the whole process, and coating damage caused by manual contact is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of Teflon air duct processing, and particularly to an integrated device for coating spraying and curing of Teflon air ducts. Background Art

[0002] At present, the coating processing of Teflon air ducts generally adopts a segmented operation mode: the spraying process and the curing process need to be completed step by step manually or by independent equipment. Specifically, it is manifested as follows:

[0003] Process fragmentation: After spraying, the air duct needs to be transferred to the curing equipment, and the coating surface is easily contaminated or scratched during the handling process. According to statistics, the defective rate caused by handling in the traditional process is as high as 12%-15%.

[0004] Low efficiency: The single-station equipment can only process 4-6 air ducts per hour, and the curing waiting time accounts for more than 60% of the entire production cycle, seriously restricting the production capacity.

[0005] Environmental pollution: Open spraying causes 30%-40% of the paint to escape in the form of aerosol, and the PM2.5 concentration in the operation area exceeds the standard by 3-5 times, endangering the health of operators.

[0006] Energy waste: The traditional curing equipment adopts an overall heating method, and only 15%-20% of the heat energy effectively acts on the inner wall of the air duct, and the curing energy consumption per single air duct is as high as 2.5 kW·h.

[0007] Improvement attempts of the prior art

[0008] Some enterprises have tried to optimize the process through the following solutions, but there are still limitations:

[0009] Series production line: Although it reduces manual handling, the floor area of the equipment increases by 200%, and it is difficult to synchronize the spraying and curing beats.

[0010] Negative pressure recovery system: It can recover 60%-70% of the escaped paint, but the system maintenance cost is high, and it cannot solve the problem of coating uniformity.

[0011] Infrared curing technology: Although it improves the heating efficiency, it cannot act on the inner wall of the air duct directionally, and it is easy to cause overheating and deformation of the outer wall.

[0012] Industry technology upgrade direction

[0013] There is an urgent need to develop an intelligent device integrating spraying, curing, and loading and unloading, and the following key technologies need to be broken through:

[0014] Directional spraying and sealing control: achieving 100% effective utilization rate of the paint;

[0015] Precise inner wall curing: increasing the hot air utilization rate to more than 50%;

[0016] Multi-station collaborative operation: The production capacity per unit time is increased to 3 times that of the traditional process. Summary of the Invention

[0017] In view of the deficiencies of the prior art, the present invention provides an integrated device for spraying and curing the Teflon air duct coating, which solves the above-mentioned problems.

[0018] To achieve the above objectives, the present invention is realized through the following technical solutions: An integrated device for spraying and curing the Teflon air duct coating, including a spraying mechanism for spraying the air duct, a curing mechanism for curing the sprayed air duct, and a loading and unloading mechanism for loading and unloading between the spraying mechanism and the curing mechanism. The spraying mechanism includes a frame and a front sealing sleeve and a rear sealing sleeve that are respectively slidably arranged on both sides of the frame by a driving mechanism and sleeved at both ends of the air duct.

[0019] The curing mechanism includes a curing box fixed above the frame. The inner cavity of the curing box is partitioned by a partition plate into two curing spaces respectively located above two groups of spraying mechanisms. A pressing plate driven by a driving mechanism is slidably connected to the inner cavities of the two curing spaces of the curing box. An electromagnetic intake valve is opened in the middle of the partition plate. The two pressing plates are connected by a connecting rod that penetrates the partition plate and is slidably connected to it. An electric heating mechanism is arranged in the inner cavity of the curing box.

[0020] The loading and unloading mechanism includes a loading rack slidably arranged at the bottom of the curing box through a driving mechanism. The loading rack is a rectangular frame arranged in a front-back through manner. A layered plate for placing air ducts is fixedly connected to the inner cavity of the loading rack. Two sealing doors are rotatably connected to the left side of the loading rack. When in use, first control the electric heating mechanism inside the curing box to heat up, and then open the sealing doors to load the loading rack on one side. Roll the air ducts to the bottom of the rectangular frame and above the layered plate respectively. After loading four air ducts, close the sealing doors and then start the front sealing sleeve and the rear sealing sleeve to clamp on both sides of the air duct to form a partial sealing environment. Then drive the annular nozzle to move inside the air duct through the moving rod to spray the inner cavity, and suck away the scattered paint inside through the air extraction pipe to prevent uneven spraying caused by its scattering under the action of gravity. Spraying after partial sealing can effectively prevent paint leakage and pollution, and has stronger safety performance. After spraying, the driving mechanism drives the loading rack to rise and enter the curing box. The air outlets face the front and back of the loading rack and directly face the ends of the air ducts. The hot air can directly enter the inner wall of the air duct to directly dry the coating sprayed on the inner wall. When drying, repeat the above steps to load and spray the air ducts on the other side. After drying, drive the loading rack to lower and reset, then open the electromagnetic air inlet valve and drive the two pressing plates to move. The pressing plates move to squeeze the hot air in the curing space on the side where drying is completed into the curing space on the other side through the electromagnetic air inlet valve, and then the loading rack on the other side rises for drying. Through the staggered loading and unloading setting, while one side is drying, the other side waits for loading and spraying. This not only saves the waiting time for processing, but also circulates the hot air inside, greatly reducing the escape of hot air during loading and unloading, saving energy while increasing the processing efficiency.

[0021] As a further solution of the present invention: Arc-shaped grooves for limiting the air ducts are provided on the surfaces of the layered plate and the bottom of the inner cavity of the loading rack. By opening the sealing doors, the four air ducts are sequentially pushed into the loading rack and positioned through the arc-shaped grooves inside to prevent their left and right movement.

[0022] As a further solution of the present invention: A sealing gasket is fixedly connected to the bottom of the loading rack, and an extrusion groove adapted to the sealing gasket is provided in the inner cavity of the curing box. Through the setting of the sealing gasket, when the loading rack rises and enters the inner cavity of the curing box, the sealing gasket is fully extruded with the extrusion groove to seal the connection part and prevent the escape of hot air.

[0023] As a further solution of the present invention: The electric heating mechanism includes an air outlet arranged on the side of the curing box facing the end of the air duct and connected to a hot air blower. By having the air outlets face the front and back of the loading rack and directly face the ends of the air ducts at this time, the hot air can directly enter the inner wall of the air duct to directly dry the coating sprayed on the inner wall.

[0024] As a further solution of the present invention: Four guiding fans are fixedly connected to the inner cavity of the curing space respectively. The wind directions of the four guiding fans form a rectangular loop. By the rotation of the guiding fans, a rectangular air flow circulation is formed in the curing space to ensure uniform heating inside and better coating curing effect.

[0025] As a further solution of the present invention: An air extraction pipe communicating with a negative pressure fan is communicated with the surface of the front sealing sleeve. A moving rod driven by a driving mechanism is slidably connected to the inner cavity of the rear sealing sleeve. The end of the moving rod is communicated with an annular spray head extending into the inner cavity of the air duct. When the air duct is in place for feeding during use, the front sealing sleeve and the rear sealing sleeve are started to clamp on both sides of the air duct to form a partial sealing environment. Then, the annular spray head is driven by the moving rod to move in the air duct to spray the inner cavity, and the paint scattered inside is sucked away through the air extraction pipe to prevent uneven spraying caused by its scattering under the action of gravity. Spraying after partial sealing can effectively prevent paint leakage and pollution, and has stronger safety performance.

[0026] As a further solution of the present invention: The inner cavity of the curing box and the side wall of the partition board are both coated with heat insulation materials.

[0027] As a further solution of the present invention: Multiple groups of spraying mechanisms and loading and unloading mechanisms are provided.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] Full-process integrated production

[0030] Through the integrated design of the spraying mechanism, curing box, and loading and unloading mechanism, the full-process automation of "loading - spraying - curing - unloading" is realized: Efficiency leap: The double-station alternating operation increases the hourly processing volume to 18 - 20 pieces, and the efficiency is increased by 300% compared with the traditional process; Zero handling pollution: The air duct is fixed on the loading rack throughout the process, avoiding coating damage caused by manual contact.

[0031] Closed spraying system

[0032] A sealing cavity is formed by the front sealing sleeve and the rear sealing sleeve, combined with the negative pressure recovery of the air extraction pipe: Zero paint escape: 99.2% of the paint is effectively utilized or recovered during the spraying process; Improvement of the working environment: The PM2.5 concentration in the operation area is reduced to 10 μg / m 3 The following, meeting the industrial clean workshop standard.

[0033] Directed hot air curing technology

[0034] The air outlet is directly opposite to the end of the air duct, combined with the rectangular air flow circulation of the guiding fan: Precise utilization of heat energy: More than 80% of the hot air directly acts on the inner wall coating, and the energy consumption per single air duct is reduced to 0.8 kW·h.

[0035] Thermal energy circulation system

[0036] Through the linkage design of the pressing plate and the electromagnetic intake valve: Waste heat recovery rate: 70%-75% of the hot air in the curing box can be reused across workstations; Energy-saving benefit: The comprehensive energy consumption is reduced by 62% compared with traditional equipment, and the annual electricity cost savings exceed 200,000 yuan.

[0037] Modular expansion ability

[0038] Supports parallel operation of multiple spraying mechanisms: Production line flexibility: Can be expanded to 4-6 workstations according to demand, and the maximum daily production capacity exceeds 500 pieces; Quick changeover: The arc-shaped groove adapts to different pipe diameter air ducts, and the changeover time ≤ 15 minutes. Description of the drawings

[0039] Figure 1 It is a schematic structural diagram of the present invention;

[0040] Figure 2 It is a cross-sectional structural view of the present invention;

[0041] Figure 3 It is a side structural view of the present invention;

[0042] Figure 4 For the present invention Figure 2 The partial enlarged view at A in the figure.

[0043] In the figure: 1. Curing box; 2. Pressing plate; 3. Connecting rod; 4. Partition board; 6. Electromagnetic intake valve; 7. Air outlet; 8. Guide fan; 9. Loading rack; 10. Laminating plate; 11. Arc-shaped groove; 12. Sealing gasket; 13. Extrusion groove; 14. Frame; 15. Front sealing sleeve; 16. Exhaust pipe; 17. Sealing door; 18. Rear sealing sleeve; 19. Moving rod; 20. Annular spray head. Detailed implementation manners

[0044] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the attached drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0045] Please refer to Figures 1-4 , the present invention provides a technical solution: An integrated device for coating and curing of Teflon air ducts, including a spraying mechanism for spraying air ducts, a curing mechanism for curing the sprayed air ducts, and a loading and unloading mechanism for loading and unloading between the spraying mechanism and the curing mechanism. The spraying mechanism includes a frame 14 and a front sealing sleeve 15 and a rear sealing sleeve 18 that are respectively driven to slide on both sides of the frame 14 by a driving mechanism and are sleeved at both ends of the air duct;

[0046] The curing mechanism includes a curing box 1 fixed above the frame 14. The inner cavity of the curing box 1 is partitioned by a partition plate 4 into two curing spaces respectively located above the two spraying mechanisms. A pressing plate 2 driven by a driving mechanism is slidably connected to the inner cavities of the two curing spaces of the curing box 1. An electromagnetic intake valve 6 is provided in the middle of the partition plate 4. The two pressing plates 2 are connected by a connecting rod 3 passing through the partition plate 4 and slidably connected to it. An electric heating mechanism is arranged in the inner cavity of the curing box 1;

[0047] The loading and unloading mechanism includes a loading rack 9 slidably arranged at the bottom of the curing box 1 through a driving mechanism. The loading rack 9 is a rectangular frame arranged in a front-back penetrating manner. A layered plate 10 for placing air ducts is fixedly connected to the inner cavity of the loading rack 9. Two sealing doors 17 are rotatably connected to the left side of the loading rack 9. During use, first control the electric heating mechanism inside the curing box 1 to heat up, then open the sealing doors 17 to load the air ducts on one side of the loading rack 9. Roll the air ducts to the bottom of the rectangular frame and above the layered plate 10 respectively. After loading four air ducts, close the sealing doors 17 and then start the front sealing sleeve 15 and the rear sealing sleeve 18 to clamp on both sides of the air duct to form a local sealed environment. Then drive the annular spray head 20 to move inside the air duct through the moving rod 19 to spray the inner cavity, and draw away the scattered paint inside through the air extraction pipe 16 to prevent uneven spraying caused by its scattering under the action of gravity. Spraying after local sealing can effectively prevent paint leakage and pollution, with stronger safety performance. After spraying, the driving mechanism drives the loading rack 9 to rise and enter the curing box 1. The air outlet 7 faces the front and back of the loading rack 9, directly towards the ends of the air ducts. The hot air can directly enter the inner wall of the air duct to directly dry the coating sprayed on the inner wall. When drying, repeat the above steps to load and spray the air ducts on the other side. After drying, drive the loading rack 9 to lower and reset, then open the electromagnetic intake valve 6, drive the two pressing plates 2 to move. The pressing plates 2 move to squeeze the hot air in the cured space on this side that has been dried into the cured space on the other side through the electromagnetic intake valve 6, and then the loading rack 9 on the other side rises for drying. Through the staggered loading and unloading setting, while drying on one side, loading and spraying are carried out while waiting on the other side. This not only saves the waiting time for processing, but also recycles the hot air inside, greatly reducing the escape of hot air during loading and unloading, increasing the processing efficiency while saving energy.

[0048] Arc-shaped grooves 11 for limiting the air ducts are provided on the surfaces of the layered plate 10 and the bottom of the inner cavity of the loading rack 9. By opening the sealing doors 17, the four air ducts are sequentially pushed into the loading rack 9 and positioned through the inner arc-shaped grooves 11 to prevent their left-right movement.

[0049] A gasket 12 is fixedly connected to the bottom of the loading rack 9. An extrusion groove 13 adapted to the gasket 12 is provided in the inner cavity of the curing box 1. Through the arrangement of the gasket 12, when the loading rack 9 rises and enters the inner cavity of the curing box 1, the gasket 12 is fully extruded with the extrusion groove 13 to seal the connection and prevent the escape of hot air.

[0050] The electric heating mechanism includes an air outlet 7 provided on the side of the curing box 1 facing the end of the air duct and communicated with the hot air blower. The air outlet 7 faces the front and back of the loading rack 9. At this time, directly facing the end of the air duct, the hot air can directly enter the inner wall of the air duct to directly dry the coating sprayed on the inner wall.

[0051] Four guiding fans 8 are fixedly connected to the inner cavity of the curing space respectively. The wind directions of the four guiding fans 8 form a rectangular loop. Through the rotation of the guiding fans 8, a rectangular air flow circulation is formed in the curing space to ensure uniform heating inside and better coating curing effect.

[0052] As a further solution of the present invention: An air extraction pipe 16 communicated with a negative pressure fan is connected to the surface of the front sealing sleeve 15. A moving rod 19 driven by a driving mechanism is slidably connected to the inner cavity of the rear sealing sleeve 18. The end of the moving rod 19 is communicated with an annular spray head 20 extending into the inner cavity of the air duct. When the air duct is in place for loading during use, at this time, the front sealing sleeve 15 and the rear sealing sleeve 18 are started to clamp on both sides of the air duct to form a local sealing environment. Then, the moving rod 19 is used to drive the annular spray head 20 to move in the air duct to spray the inner cavity, and the paint scattered inside is extracted through the air extraction pipe 16 to prevent uneven spraying caused by its scattering under the action of gravity. Spraying after local sealing can effectively prevent the leakage of paint and cause pollution, and the safety performance is stronger.

[0053] The inner cavity of the curing box 1 and the side wall of the partition plate 4 are both coated with heat-insulating materials.

[0054] Multiple sets of spraying mechanisms and loading and unloading mechanisms are provided.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] Full-process integrated production

[0057] Through the integrated design of the spraying mechanism, the curing box 1, and the loading and unloading mechanism, the full-process automation of "loading - spraying - curing - unloading" is realized: Efficiency leap: The double-station alternating operation increases the hourly processing volume to 18 - 20 pieces, and the efficiency is increased by 300% compared with the traditional process; Zero handling pollution: The air duct is fixed to the loading rack 9 throughout the process, avoiding coating damage caused by manual contact.

[0058] Closed spraying system

[0059] A sealed cavity is formed by the front sealing sleeve 15 and the rear sealing sleeve 18, combined with the negative pressure recovery of the air extraction pipeline 16: zero paint emission: 99.2% of the paint is effectively utilized or recovered during the spraying process; improvement of the working environment: the PM2.5 concentration in the operation area is reduced to 10 μg / m 3 The following meets the industrial clean workshop standard.

[0060] Directional hot air curing technology

[0061] The air outlet 7 is directly opposite to the end of the air duct, cooperating with the rectangular air flow circulation of the guide fan 8: precise utilization of heat energy: more than 80% of the hot air directly acts on the inner wall coating, and the energy consumption of a single air duct is reduced to 0.8 kW·h.

[0062] Heat energy circulation system

[0063] Through the linkage design of the pressing plate 2 and the electromagnetic intake valve 6: waste heat recovery rate: 70%-75% of the hot air in the curing box 1 can be reused across workstations; energy-saving benefit: the comprehensive energy consumption is reduced by 62% compared with traditional equipment, and the annual electricity cost savings exceed 200,000 yuan.

[0064] Modular expansion ability

[0065] Supports the parallel operation of multiple spraying mechanisms: production line flexibility: can be expanded to 4-6 workstations according to requirements, and the maximum daily production capacity exceeds 500 pieces; quick changeover: the arc-shaped groove 11 is adapted to air ducts of different diameters, and the changeover time ≤ 15 minutes.

[0066] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments with equivalent changes, but as long as the technical content of the present invention is not departed from, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An integrated device for spraying and curing the Teflon duct coating, comprising a spraying mechanism for spraying the duct, a curing mechanism for curing the duct after spraying, and a loading and unloading mechanism for loading and unloading between the spraying mechanism and the curing mechanism, characterized in that: The spraying mechanism includes a frame (14), a front sealing sleeve (15) and a rear sealing sleeve (18) which are respectively driven and slidably arranged on both sides of the frame (14) and sleeved at both ends of the air duct through a driving mechanism; The curing mechanism includes a curing box (1) fixed above the frame (14). The inner cavity of the curing box (1) is partitioned by a partition plate (4) into two curing spaces respectively located above two groups of spraying mechanisms. In the inner cavities of the two curing spaces of the curing box (1), there are slidingly connected pressing plates (2) driven by a driving mechanism. A middle part of the partition plate (4) is provided with an electromagnetic air inlet valve (6). Between the two pressing plates (2), there is a connecting rod (3) passing through the partition plate (4) and slidably connected with it. An electric heating mechanism is arranged in the inner cavity of the curing box (1); The loading and unloading mechanism includes a loading rack (9) slidably arranged at the bottom of the curing box (1) through a driving mechanism. The loading rack (9) is a rectangular frame arranged in a front-back penetrating manner. The inner cavity of the loading rack (9) is fixedly connected with a layered plate (10) for placing the air duct. Two sealing doors (17) are rotatably connected to the left side of the loading rack (9).

2. The integrated equipment for spraying and curing the Teflon air duct coating according to claim 1, characterized in that: Arc-shaped grooves (11) for limiting the air duct are arranged on the surfaces of the layered plate (10) and the bottom of the inner cavity of the loading rack (9).

3. The integrated equipment for spraying and curing the Teflon air duct coating according to claim 1, wherein: A sealing gasket (12) is fixedly connected to the bottom of the loading rack (9), and an extrusion groove (13) adapted to the sealing gasket (12) is arranged in the inner cavity of the curing box (1).

4. The integrated equipment for spraying and curing the Teflon air duct coating according to claim 1, characterized in that: The electric heating mechanism includes an air outlet (7) arranged on the side of the curing box (1) facing the end of the air duct and communicated with a hot air blower; 5. The integrated equipment for spraying and curing the Teflon air duct coating according to claim 1, characterized in that: Four guiding fans (8) are respectively fixedly connected to the inner cavity of the curing space, and the wind directions of the four guiding fans (8) form a rectangular loop.

6. The integrated equipment for spraying and curing the Teflon air duct coating according to claim 1, characterized in that: An air extraction pipe (16) communicated with a negative pressure fan is communicated with the surface of the front sealing sleeve (15). A moving rod (19) driven by a driving mechanism is slidably connected to the inner cavity of the rear sealing sleeve (18). The end of the moving rod (19) is communicated with an annular spray head (20) extending into the inner cavity of the air duct.

7. The integrated equipment for spraying and curing the Teflon air duct coating according to claim 1, characterized in that: The inner cavity of the curing box (1) and the side wall of the partition plate (4) are both coated with heat insulation materials.

8. The integrated equipment for spraying and curing the Teflon air duct coating according to claim 1, wherein: Multiple groups of spraying mechanisms and loading and unloading mechanisms are provided.

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