Roller coating preparation device and method for heat insulation coating of cylindrical part

Abstract

The invention relates to the technical field of heat insulation coating preparation, and particularly discloses a roller coating preparation device for a heat insulation coating of a cylindrical part, the roller coating preparation device comprises a workbench, a heating assembly, a clamping assembly, two or more chuck sets, a driving motor, a protective tool and the like, the number of the chuck sets is two or more, and each chuck set comprises a plurality of multi-jaw chucks; each multi-jaw chuck clamps one cylindrical part, the multi-jaw chucks in different chuck groups can respectively clamp the cylindrical parts with different lengths, the heating assembly comprises a carrier and a heating plate group positioned on the carrier, the heating plate group and the chuck groups are correspondingly arranged in a matched manner, each heating plate is used for heating one cylindrical part, and the heating plate group is used for heating one cylindrical part. And the heating plates in different heating plate groups can respectively heat cylindrical parts with different lengths. The invention further provides a roller coating preparation method of the cylindrical part heat insulation coating. According to the invention, the uniformity and consistency of the heat insulation coating of the cylindrical part can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat-insulating coating preparation, and specifically provides a roller coating preparation device for a cylindrical part heat-insulating coating and a preparation method thereof. Background Art

[0002] Cylindrical parts usually refer to parts with a cylindrical shape. Cylindrical parts are widely used in many fields such as machinery manufacturing, aerospace, and automobile industry. The roller coating process of cylindrical parts is a technology used to apply paint on the inner surface of parts. It has the advantages of high paint utilization rate and good coating thickness consistency.

[0003] During the roller coating production process of cylindrical parts, due to the inconsistent adjustment of the spacing between the two ends of the roller coating machine's driving shaft and the driven shaft, the axis of the cylindrical shell cannot be adjusted to a horizontal state, which can easily cause the problem of uneven coating thickness. In addition, during roller coating, due to the insufficient roundness of the parts, irregular circles are formed, which will cause the cylindrical shell to jump when rolling, thereby affecting the leveling of the inner surface of the coating, and ultimately causing the prepared coating to have poor uniformity.

[0004] For roller coating of thermal insulation coatings on cylindrical parts, the existing preparation method is usually to place the cylindrical parts directly on the roller, and use limit devices at both ends. During the rolling coating process, the thermal insulation coating is first introduced into the inner cavity of the part, and then the roller rotates to drive the part to roll, so that the coating is coated on the inner cavity of the part. After a long period of rolling coating, when the coating solvent evaporates, the coating adheres to the inner cavity of the part.

[0005] The existing preparation methods have the following disadvantages: 1. The structure of the roller coating device is unreasonable, which may cause parts to fall off the roller, posing a safety hazard; 2. The coating uniformity after roller coating is not high, which may pose a quality hazard; 3. The roller coating time is long and the production efficiency is low. In order to avoid the above problems, it is necessary to design a roller coating preparation device and preparation method for the thermal insulation coating of cylindrical parts. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a roller coating preparation device and a preparation method for a thermal insulation coating of a cylindrical part, which can improve the uniformity and consistency of the thermal insulation coating of the cylindrical part, improve production safety, and improve production efficiency.

[0007] The present invention provides a roller coating preparation device for a cylindrical part heat insulation coating, which specifically comprises a workbench, on which a heating component and a clamping component located on the side of the heating component are arranged; the clamping component comprises a chuck group for clamping the cylindrical part and a driving motor for driving the cylindrical part to rotate; a protective device is arranged at one end of the cylindrical part close to the heating component, and the protective device prevents the coating in the cylindrical part from flowing out; The number of chuck groups is more than two groups arranged sequentially from top to bottom, each chuck group includes a plurality of multi-jaw chucks, each multi-jaw chuck clamps a cylindrical part, and the multi-jaw chucks in different chuck groups can clamp cylindrical parts of different lengths respectively; The heating assembly includes a carrier slidably arranged on a workbench and a heating plate group located on the carrier, and the heating plate group is matched with the chuck group and arranged accordingly; specifically, the number of the heating plate groups is more than two groups arranged in sequence from top to bottom, and each group of the heating plate groups includes multiple heating plates, and the heating plates heat the cylindrical parts on the outside of the cylindrical parts; each heating plate is used to heat a cylindrical part, and the heating plates in different heating plate groups can heat cylindrical parts of different lengths respectively.

[0008] Furthermore, the multi-jaw chuck is a three-jaw chuck, which includes three clamping jaws evenly arranged along a 360° direction, and at least three stepped clamping platforms are provided on the inner wall of the clamping jaws, and the clamping inner diameters of the clamping platforms increase successively from bottom to top.

[0009] Furthermore, the three-jaw chuck in the bottom group of chuck groups can clamp a length greater than the length of the cylindrical part clamped by the three-jaw chuck in the upper chuck group; the length of the heating plate in the bottom group of heating plates is greater than the length of the heating plate in the upper heating plate group.

[0010] Furthermore, the number of the chuck groups is three groups arranged sequentially from top to bottom, and the number of the heating plate groups is three groups arranged to match and correspond to the chuck groups.

[0011] Furthermore, a support frame for supporting the cylindrical parts in the bottom group of chuck groups is provided on the workbench; the support frame includes a middle accommodating groove 1 and an accommodating groove 2 perpendicular to the accommodating groove 1, and the accommodating groove 2 is arranged parallel to the axis of the cylindrical parts; support wheels are provided on both sides of the accommodating groove 2 and the support wheels are accommodated in the accommodating groove 1.

[0012] Furthermore, the protective gear comprises a feed through hole, and the feed through hole is matched with the inner hole of the cylindrical part; an anti-overflow platform is provided on the hole wall of the feed through hole extending inward.

[0013] Furthermore, a plurality of mounting grooves are evenly distributed on the overflow prevention platform, and the mounting grooves are fan-shaped groove structures; and the outer end surface of the protective gear includes a straight section.

[0014] Furthermore, the workbench is provided with a sliding track below the heating plate, the lower end of the carrier is matched with the sliding track and a slider is provided, and the carrier can drive the heating plate to slide on the sliding track toward the cylindrical part; a driving part is provided on the end of the carrier away from the cylindrical part.

[0015] A method for preparing a heat-insulating coating for a cylindrical part by rolling, comprising the following steps: S1: Install the protective gear on the cylindrical part; S2: Place the cylindrical part on the three-jaw chuck, and the cylindrical part is clamped and centered by the three-jaw chuck; S3: Prepare the heat-insulating coating according to the use requirements, and introduce the required amount of the heat-insulating coating into the inner cavity of the cylindrical part from the feed hole of the protective gear; S4: Pre-roll coating, start the drive motor, rotate the cylindrical part at a constant speed, and roll the thermal insulation coating evenly into the inner cavity of the cylindrical part; S5: Perform heating, and drive the heating component to move to the outside of the cylindrical part on the sliding track through the driving member; control the heating power and the heating distance between the heating component and the outer surface of the cylindrical part, and control the temperature of the surface of the cylindrical part; S6: Heat the roller coating, rotate the cylindrical part at a constant speed, and continue to heat the heating plate on the heating assembly until the thermal insulation coating stops flowing.

[0016] Furthermore, after the cylindrical part in S2 is clamped on the three-jaw chuck, the coaxiality of the position of the cylindrical part and the three-jaw chuck is ≤0.2mm; during the heating process, the mechanical equipment jump of the three-jaw chuck is ≤0.05mm, the rotation speed is 0-400rpm and the speed can be adjusted; when pre-rolling in S4, the uniform rotation time is 15min-30min.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects: the roller coating preparation device in this scheme has a simple and reasonable structure, simple operation, the cylindrical parts are not easy to fall off, the safety is high, the coating after roller coating is highly uniform, the quality is reliable, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of a roll coating preparation device provided according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a three-jaw chuck provided according to an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of a protective gear provided according to an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of a support frame provided according to an embodiment of the present invention.

[0019] The reference numerals therein include: workbench 1, three-jaw chuck 2, drive motor 3, protective gear 4, cylindrical part 5, carrier 6, heating plate 7, clamping claw 8, clamping platform 9, support frame 10, accommodating slot 1 11, accommodating slot 2 12, support wheel 13, feed through hole 14, anti-overflow platform 15, mounting slot 16, straight section 17, sliding rail 18, and drive member 19. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following Figure 1-4It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0021] A roller coating preparation device for a cylindrical part heat insulation coating, such as Figure 1 As shown, the workbench 1 includes a heating component and a clamping component located on the side of the heating component. Figure 1 On the left side, the support component is located Figure 1 On the right side, the clamping assembly includes a chuck group for clamping the cylindrical part 5 and a driving motor 3 for driving the cylindrical part 5 to rotate, and the heating assembly includes a carrier 6 slidably set on the workbench 1 and a heating plate group located on the carrier 6.

[0022] The number of chuck groups is more than two groups arranged sequentially from top to bottom, each chuck group includes a plurality of multi-jaw chucks, each multi-jaw chuck clamps a cylindrical part 5, and the multi-jaw chucks in different chuck groups can clamp cylindrical parts 5 of different lengths. Figure 1 , Figure 2 As shown, the multi-jaw chuck is a three-jaw chuck 2, which includes three clamping jaws 8 evenly arranged along a 360° direction, and at least three stepped clamping platforms 9 are provided on the inner wall of the clamping jaws 8, and the clamping inner diameters of the clamping platforms 9 increase successively from bottom to top.

[0023] There are three chuck groups arranged in sequence from top to bottom, and each chuck group is driven by a drive motor 3. The three-jaw chuck 2 can hold cylindrical parts 5 of different outer diameters through a stepped clamping platform 9, and has high versatility. At the same time, each group of three-jaw chucks 8 is driven by a different drive motor 3, which can further improve the concentricity and ensure the uniformity of the thermal insulation coating.

[0024] The three-jaw chuck 2 in the bottom group of chuck groups can clamp a length greater than the length of the cylindrical part 5 clamped by the three-jaw chuck 2 in the upper chuck group. The length of the heating plate 7 in the bottom group of heating plate groups is greater than the length of the heating plate 7 in the upper heating plate group. The chuck group in the present application can clamp cylindrical parts 5 of different lengths at the same time, further improving the versatility. At the same time, the bottom layer of chuck groups can clamp long cylindrical parts 5, and the cylindrical parts 5 in various scenarios can be processed with thermal insulation coatings.

[0025] like Figure 1 , Figure 4 As shown, a support frame 10 for supporting the cylindrical part 5 in the bottom group of chucks is provided on the workbench 1. The support frame 10 includes a middle receiving groove 11 and a receiving groove 2 12 perpendicular to the receiving groove 11. The receiving groove 2 12 is arranged parallel to the axis of the cylindrical part 5. The axis direction of the cylindrical part 5 is as shown in FIG. Figure 4As shown in the F direction, support wheels 13 are provided on both sides of the second accommodating groove 12 , and the support wheels 13 are accommodated in the first accommodating groove 11 . The support wheels 13 and the support frame 10 can stably support the long cylindrical part 5 .

[0026] The heating assembly includes a carrier 6 slidably arranged on the workbench 1 and a heating plate group located on the carrier 6. The heating plate group is matched with the chuck group. Specifically, the number of the heating plate groups is more than two groups arranged in sequence from top to bottom. In this embodiment, the heating plate groups are three groups matched with the chuck group. Each heating plate group includes multiple heating plates 7. The heating plates 7 heat the cylindrical part 5 on the outside of the cylindrical part 5. Each heating plate 7 is used to heat a cylindrical part 5. The heating plates 7 in different heating plate groups can heat cylindrical parts 5 of different lengths respectively. In this embodiment, the length and width of the heating plates 7 in the bottom layer of the heating plate group are relatively large to match the heating requirements of the bottom layer of the long cylindrical part 5.

[0027] A protective device 4 is provided at one end of the cylindrical part 5 close to the heating component, and the protective device 4 prevents the coating in the cylindrical part 5 from flowing out. Figure 3 As shown, the protective gear 4 specifically includes a feed through hole 14, which is matched with the inner hole of the cylindrical part 5. The hole wall of the feed through hole 14 is extended inwardly to be provided with an anti-overflow platform 15, which is used to prevent the thermal insulation coating in the cylindrical part 5 from flowing out. A plurality of mounting grooves 16 are evenly distributed on the anti-overflow platform 15, and the mounting grooves 16 are fan-shaped groove structures. The mounting grooves 16 are used to prevent the tooling from more conveniently installing the protective gear 4 on the cylindrical part 5. The outer end surface of the protective gear 4 includes a straight section 17. Since the outer end surface of the protective gear 4 is easy to wear and inconvenient to stack and store if it is a whole circle, the straight section 17 can make the protective gear 4 easy to place. At the same time, the outer end surface of the protective gear 4 is not easy to wear, which can improve the service life and quality of use.

[0028] like Figure 1 As shown, the workbench 1 is provided with a sliding track 18 located below the heating plate 7, and a slider is provided at the lower end of the carrier 6 to match the sliding track 18. The carrier 6 can drive the heating plate 7 to slide on the sliding track 18 toward the cylindrical part 5, and a driving member 19 is provided on the end of the carrier 6 away from the cylindrical part 5.

[0029] In this embodiment, each chuck group includes four three-jaw chucks 2, and each heating plate group includes four heating plates 7, including a total of 12 three-jaw chucks 2 and 12 heating plates 7, which can simultaneously roll-coat thermal insulation paint on 12 cylindrical parts 5.

[0030] A method for preparing a heat-insulating coating of a cylindrical part 5 by rolling, comprising the following steps: S1: First, blow the cylindrical part 5 clean with compressed air, sand the scratched parts with fine sandpaper and then blow them clean, clean any small amount of debris with a towel dipped in anhydrous ethanol, and install the protective gear 4 on the cylindrical part 5.

[0031] S2: Place the cylindrical part 5 on the three-jaw chuck 2, and clamp and center the cylindrical part 5 by the three-jaw chuck 2; after the cylindrical part 5 is clamped on the three-jaw chuck 2, the coaxiality of the position of the cylindrical part 5 and the three-jaw chuck 2 is ≤0.2mm.

[0032] S3: Prepare the heat-insulating coating according to the use requirements, and introduce the required amount of the heat-insulating coating into the inner cavity of the cylindrical part 5 from the feed through hole 14 of the protective gear 4.

[0033] S4: Pre-roll coating, start the driving motor 3, rotate the cylindrical part 5 at a constant speed, and roll the heat-insulating coating evenly into the inner cavity of the cylindrical part 5. When pre-roll coating is performed, the constant speed rotation time is 15 minutes to 30 minutes.

[0034] S5: Perform heating, and drive the heating assembly to move to the outside of the cylindrical part 5 on the sliding track 18 through the driving member 19; control the heating power and the heating distance between the heating assembly and the outer surface of the cylindrical part 5 to control the temperature of the surface of the cylindrical part 5.

[0035] S6: heating and rolling, rotating the cylindrical part 5 at a constant speed, and continuously heating the heating plate 7 on the heating assembly until the heat-insulating coating stops flowing.

[0036] The cylindrical part 5 is heated and cured while rolling, and the thermal insulation coating can be completely and evenly covered on the cylindrical part 5 through centrifugal force to prepare a thermal insulation coating with high uniformity. The reaction speed of the coating can be accelerated by heating, the production cycle can be shortened, and the production efficiency can be improved. During the heating process, the mechanical equipment jump of the three-jaw chuck 2 is ≤0.05mm, the rotation speed is 0~400rpm and the rotation speed can be adjusted.

[0037] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A roller coating preparation device for a cylindrical part thermal insulation coating, comprising a workbench, characterized in that: The workbench is provided with a heating component and a clamping component located on the side of the heating component; the clamping component includes a chuck group for clamping the cylindrical part and a driving motor for driving the cylindrical part to rotate; a protective device is provided at one end of the cylindrical part close to the heating component and the protective device prevents the coating in the cylindrical part from flowing out; The number of chuck groups is more than two groups arranged sequentially from top to bottom, each chuck group includes a plurality of multi-jaw chucks, each multi-jaw chuck clamps a cylindrical part, and the multi-jaw chucks in different chuck groups can clamp cylindrical parts of different lengths respectively; The heating assembly includes a carrier slidably arranged on a workbench and a heating plate group located on the carrier, and the heating plate group is matched with the chuck group and arranged accordingly; specifically, the number of the heating plate groups is more than two groups arranged in sequence from top to bottom, and each group of the heating plate groups includes multiple heating plates, and the heating plates heat the cylindrical parts on the outside of the cylindrical parts; each heating plate is used to heat a cylindrical part, and the heating plates in different heating plate groups can heat cylindrical parts of different lengths respectively.

2. The roller coating preparation device for cylindrical parts thermal insulation coating according to claim 1 is characterized in that: The multi-jaw chuck is a three-jaw chuck, which includes three clamping jaws evenly arranged along a 360° direction. At least three stepped clamping platforms are provided on the inner wall of the clamping jaws, and the clamping inner diameters of the clamping platforms increase successively from bottom to top.

3. The roller coating preparation device for the thermal insulation coating of cylindrical parts according to claim 2 is characterized in that: The three-jaw chuck in the bottom chuck group can clamp a longer length of the cylindrical part clamped by the three-jaw chuck in the upper chuck group; the length of the heating plate in the bottom heating plate group is longer than the length of the heating plate in the upper heating plate group.

4. The roller coating preparation device for the thermal insulation coating of cylindrical parts according to claim 3 is characterized in that: The workbench is provided with a support frame for supporting the cylindrical parts in the bottom group of chuck groups; the support frame includes a middle accommodating groove 1 and an accommodating groove 2 perpendicular to the accommodating groove 1, and the accommodating groove 2 is arranged parallel to the axis of the cylindrical parts; support wheels are provided on both sides of the accommodating groove 2 and the support wheels are accommodated in the accommodating groove 1.

5. The roller coating preparation device for the thermal insulation coating of the cylindrical parts according to claim 4 is characterized in that: The number of the chuck groups is three groups arranged sequentially from top to bottom, and the number of the heating plate groups is three groups arranged corresponding to the chuck groups.

6. The roller coating preparation device for the thermal insulation coating of cylindrical parts according to claim 5 is characterized in that: The protective device comprises a feed through hole, and the feed through hole is matched with the inner hole of the cylindrical part; an anti-overflow platform is provided on the hole wall of the feed through hole extending toward the inside.

7. The roller coating preparation device for the thermal insulation coating of cylindrical parts according to claim 6 is characterized in that: The anti-overflow platform is evenly distributed with a plurality of mounting grooves, and the mounting grooves are fan-shaped groove structures; the outer end surface of the protective gear includes a straight section.

8. The roller coating preparation device for the thermal insulation coating of cylindrical parts according to claim 7 is characterized in that: The workbench is provided with a sliding track below the heating plate, the lower end of the carrier is matched with the sliding track and a slider is provided, and the carrier can drive the heating plate to slide on the sliding track toward the cylindrical part; a driving part is provided on the end of the carrier away from the cylindrical part.

9. A method for preparing a heat-insulating coating on a cylindrical part by roller coating, wherein the heat-insulating coating is roller coated on the cylindrical part by using the roller coating preparation device according to claim 8, characterized in that: The steps include: S1: Install the protective gear on the cylindrical part; S2: Place the cylindrical part on the three-jaw chuck, and the cylindrical part is clamped and centered by the three-jaw chuck; S3: Prepare the heat-insulating coating according to the use requirements, and introduce the required amount of the heat-insulating coating into the inner cavity of the cylindrical part from the feed hole of the protective gear; S4: Pre-roll coating, start the drive motor, rotate the cylindrical part at a constant speed, and roll the thermal insulation coating evenly into the inner cavity of the cylindrical part; S5: Perform heating, and drive the heating component to move to the outside of the cylindrical part on the sliding track through the driving member; control the heating power and the heating distance between the heating component and the outer surface of the cylindrical part, and control the temperature of the surface of the cylindrical part; S6: Heat the roller coating, rotate the cylindrical part at a constant speed, and continue to heat the heating plate on the heating assembly until the thermal insulation coating stops flowing.

10. The method for preparing the heat-insulating coating of a cylindrical part by roller coating according to claim 9, characterized in that: After the cylindrical part is clamped on the three-jaw chuck in S2, the coaxiality between the cylindrical part and the three-jaw chuck is ≤0.2mm; during the heating process, the mechanical equipment jump of the three-jaw chuck is ≤0.05mm, the rotation speed is 0~400rpm and the speed can be adjusted; when pre-rolling in S4, the uniform rotation time is 15min~30min.

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