Coating machine

Abstract

The utility model discloses a coating machine, which relates to the technical field of reinforcing steel bars and comprises a reinforcing steel bar body, a water-based cold zinc spraying coating and a weather-resistant water-based epoxy closed coating are sequentially coated outside the reinforcing steel bar body, the coating machine further comprises a support, a cylinder is fixedly connected onto the support, a partition plate is fixedly connected inside the cylinder, and the partition plate is fixedly connected onto the support. A partition plate is arranged in the cylinder, the interior of the cylinder is divided into a heating chamber and a coating chamber by the partition plate, rotating cylinders allowing a reinforcing steel bar body to penetrate through are rotationally arranged at the two ends of the cylinder, the rotating cylinder close to the heating chamber further penetrates through the partition plate, heating blocks are arranged in the heating chamber, and the heating blocks are fixedly connected to the corresponding rotating cylinders. According to the coating machine, the exterior of the steel bar body is sequentially coated with the water-based cold zinc spraying coating and the weather-resistant water-based epoxy closed coating, so that the anti-rust performance, the chemical corrosion resistance and the wear resistance of the steel bar are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bars, in particular to a coating machine. Background Art

[0002] Reinforced concrete structures are widely used in various engineering constructions due to their high strength and low cost. Their service performance directly affects the life of the foundation project. The corrosion of steel bars in harsh environments such as high temperature, high humidity, high salt, and wave splashing is an important reason for the decrease in durability and shortened service life of concrete structures. Therefore, on the basis of enhancing the anti-penetration ability of the concrete matrix, improving the corrosion resistance of steel bars is an effective measure to ensure the durability and safety of concrete structures in harsh environments.

[0003] The existing steel bar outer coating structure is relatively simple and it is difficult to effectively improve the corrosion resistance of the steel bar.

[0004] Therefore, it is necessary to propose a coating machine to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a coating machine to solve the problem in the prior art that the outer coating structure of the steel bar is relatively simple and it is difficult to effectively improve the corrosion resistance of the steel bar.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a composite coating structure of steel bars, comprising a steel bar body, the exterior of the steel bar body being coated with a water-based cold-sprayed zinc coating and a weather-resistant water-based epoxy sealing coating in sequence.

[0007] The utility model also discloses a coating machine for coating the above-mentioned composite coating structure, and also includes a support, to which a cylinder is fixedly connected, to which a partition is fixedly connected inside the cylinder, and the partition divides the inside of the cylinder into a heating chamber and a coating chamber, and rotating cylinders for the steel bar body to pass through are rotatably arranged at both ends of the cylinder, wherein a rotating cylinder close to the heating chamber also passes through the partition, and a heating block is arranged inside the heating chamber, and the heating block is fixedly connected to the corresponding rotating cylinder.

[0008] Preferably, the ends of the two rotating drums that are close to each other are fixedly connected to support plates, and a rotating shaft is rotatably connected between the two support plates. The rotating shaft is provided in two numbers and the two rotating shafts are respectively distributed on both sides of the steel bar body, and a coating roller is fixedly connected to the outside of the rotating shaft.

[0009] Preferably, a first gear is fixedly connected to the inner wall of the cylinder, a second gear is fixedly connected to the rotating shaft, and the first gear is meshingly connected to the second gear.

[0010] Preferably, a liquid cavity is opened inside the wall of the cylinder, and the liquid cavity is located at the top of the cylinder. A circular hole is opened on the inner wall of the top of the cylinder, and the circular hole is connected with the liquid cavity. A round rod is slidably arranged inside the circular hole, and the inner diameter of the circular hole is larger than the outer diameter of the round rod. A sealing block is fixedly connected to the top of the round rod, and a spring is fixedly connected between the sealing block and the inner wall of the liquid cavity, and the coating roller cooperates with the round rod.

[0011] Preferably, a recovery chamber is provided inside the wall of the cylinder, the recovery chamber is located at the bottom of the cylinder, a recovery hole is provided on the inner wall of the bottom of the cylinder, the recovery hole is connected to the recovery chamber, and a circulation device is provided between the liquid chamber and the recovery chamber.

[0012] Preferably, the support is provided in plurality, and coating of multiple steel bar bodies is performed simultaneously.

[0013] Preferably, the support is provided in two pieces, and the water-based cold-sprayed zinc coating and the weather-resistant water-based epoxy sealing coating are coated in sequence.

[0014] Technical effects and advantages of the utility model:

[0015] 1. The utility model improves the rust resistance, chemical corrosion resistance and wear resistance of the steel bar by coating the water-based cold-sprayed zinc coating and the weather-resistant water-based epoxy sealing coating on the outside of the steel bar body in sequence;

[0016] 2. A heating chamber is set up to heat the steel bar body before coating to increase its surface temperature, which can improve the fluidity of the coating and reduce the occurrence of defects such as bubbles and shrinkage holes;

[0017] 3. When the coating roller rotates around the steel bar body, since the first gear is meshed with the second gear, the second gear drives the coating roller to rotate through the rotating shaft, thereby improving the coating effect;

[0018] 4. When the coating roller rotates around the steel bar body, when it rotates to the top of the cylinder, it squeezes the round rod to slide upward, and a gap appears between the sealing block and the round hole. The paint drips onto the coating roller through the gap. When the coating roller rotates to a position offset from the liquid cavity, the restoring force of the spring drives the sealing block to reset and close the round hole to ensure uniformity of material discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the composite coating structure of the steel bar of the utility model.

[0020] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure in the middle.

[0021] Figure 3This is a schematic diagram of the structure of the coating machine of the utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the cylinder, heating chamber and coating chamber of the utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the cylinder and coating roller of the utility model.

[0024] Figure 6 For this utility model Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0025] Figure 7 This is a schematic diagram of the coating roller and the first gear structure of the utility model.

[0026] Figure 8 This is a schematic structural diagram of Example 3 of the utility model.

[0027] Fig. 9 This is a schematic structural diagram of Example 4 of the utility model.

[0028] In the figure: 1. support; 2. cylinder; 3. partition; 4. heating chamber; 5. coating chamber; 6. heating block; 7. rotating drum; 8. support plate; 9. rotating shaft; 10. coating roller; 11. first gear; 12. second gear; 13. liquid chamber; 14. recovery chamber; 15. round hole; 16. round rod; 17. sealing block; 18. spring; 19. circulation device; 20. recovery hole; 21. steel bar body; 22. water-based cold-sprayed zinc paint coating; 23. weather-resistant water-based epoxy sealing coating. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1, the utility model provides as follows Figure 1 The composite coating structure of a steel bar shown in the figure comprises a steel bar body 21, the exterior of which is coated with a water-based cold-sprayed zinc coating 22 and a weather-resistant water-based epoxy sealing coating 23. Specifically, before coating, the steel bar body 21 needs to be polished, and its surface cleanliness reaches Sa3 level and the roughness is 30μm-80μm;

[0031] The water-based cold-sprayed zinc coating 22 has a thickness of 40μm-80μm. It uses water-based cold-sprayed zinc. It is a high-solid heavy-duty anti-corrosion coating composed of a water-based modified fusion agent, zinc powder, water, additives, etc. It has the following main characteristics: excellent anti-rust performance; excellent weather resistance; strong adhesion and good recoating performance; convenient construction, low VOC content, safe, environmentally friendly and non-toxic;

[0032] The weather-resistant water-based epoxy closed coating 23 has a thickness of 40 μm-80 μm and uses an epoxy closed primer, which is a primer product containing epoxy resin and has strong waterproof and weather-resistant properties. It can isolate the entry of air and moisture, increase the service life of the coating, and protect the underlying material from damage. At the same time, it can also improve the adhesion, chemical corrosion resistance and wear resistance of the coating, making the coating more durable. At the same time, it prevents comprehensive damage caused by factors such as light, heat, wind and rain, bacteria, etc., such as fading, discoloration, cracking, powdering and strength reduction, so as to achieve the purpose of protecting the steel bar body 21.

[0033] The utility model improves the rust resistance, chemical corrosion resistance and wear resistance of the steel bar by sequentially coating the water-based cold-sprayed zinc coating 22 and the weather-resistant water-based epoxy sealing coating 23 on the outside of the steel bar body 21.

[0034] Embodiment 2, the utility model provides as follows Figure 2 to Figure 9 The coating machine shown is used for coating the composite coating structure, and also includes a support 1, a cylinder 2 is fixedly connected to the support 1, and a partition 3 is fixedly connected inside the cylinder 2. The partition 3 divides the inside of the cylinder 2 into a heating chamber 4 and a coating chamber 5.

[0035] Both ends of the cylinder 2 are rotatably provided with rotating cylinders 7 for the steel bar body 21 to pass through, wherein one rotating cylinder 7 near the heating chamber 4 also passes through the partition 3. A heating block 6 is provided inside the heating chamber 4, and the heating block 6 is fixedly connected to the corresponding rotating cylinder 7.

[0036] The heating chamber 4 is provided to heat the steel bar body 21 before coating, so as to increase its surface temperature and improve the fluidity of the coating, thereby reducing the generation of defects such as bubbles and shrinkage cavities.

[0037] The ends of the two rotating drums 7 that are close to each other are fixedly connected with support plates 8, and a circular opening is opened on the support plate 8 for the steel bar body 21 to pass through. A rotating shaft 9 is rotatably connected between the two support plates 8. There are two rotating shafts 9, and the two rotating shafts 9 are respectively distributed on both sides of the steel bar body 21. A coating roller 10 is fixedly connected to the outside of the rotating shaft 9, and the coating roller 10 is set to coat the steel bar body 21.

[0038] In addition, a driving device (not shown in the figure) is arranged between one of the rotating drums 7 and the outer wall of the cylinder 2, including a motor, gears and other structures, which is used to drive the two coating rollers 10 to rotate around the steel bar body 21 through the rotating drum 7, support plate 8 and other structures. The driving device is an existing common technology and will not be described here.

[0039] In order to make the coating roller 10 rotate around the steel bar body 21 and also rotate on its own, thereby improving the coating uniformity, a first gear 11 is fixedly connected to the inner wall of the cylinder 2, and a second gear 12 is fixedly connected to the rotating shaft 9, and the first gear 11 is meshedly connected with the second gear 12. When the coating roller 10 rotates around the steel bar body 21, since the first gear 11 is meshedly connected with the second gear 12, the second gear 12 drives the coating roller 10 to rotate on its own through the rotating shaft 9, thereby improving the coating effect.

[0040] A liquid cavity 13 is provided inside the wall of the cylinder 2, into which the paint is injected. The liquid cavity 13 is located at the top of the cylinder 2. A circular hole 15 is provided on the inner wall of the top of the cylinder 2. A plurality of circular holes 15 are provided, and the circular holes 15 are connected with the liquid cavity 13. In order to ensure uniformity of the coating material feeding, a round rod 16 is slidably provided inside the circular hole 15. The inner diameter of the circular hole 15 is larger than the outer diameter of the circular rod 16. A sealing block 17 is fixedly connected to the top of the circular rod 16. A spring 18 is fixedly connected between the sealing block 17 and the inner wall of the liquid cavity 13. The coating roller 10 cooperates with the circular rod 16.

[0041] When the coating roller 10 rotates around the steel bar body 21, when it rotates to the top position of the cylinder 2, it squeezes the round rod 16 to slide upward, and a gap appears between the sealing block 17 and the round hole 15. The paint drips onto the coating roller 10 through the gap. When the coating roller 10 rotates to a position offset from the liquid chamber 13, the resetting elastic force of the spring 18 drives the sealing block 17 to reset and close the round hole 15 to ensure the uniformity of the material feeding.

[0042] Next, the coating roller 10 performs coating treatment on the steel bar body 21;

[0043] In the specific use process, two coating machines can be provided, the first one is used to coat the water-based cold-sprayed zinc paint coating 22, and after it is dried, the second coating machine coats the weather-resistant water-based epoxy sealing coating 23 on its outside.

[0044] In order to improve the utilization rate of the paint, a recovery chamber 14 is provided inside the wall of the cylinder 2, and the recovery chamber 14 is located at the bottom of the cylinder 2. A recovery hole 20 is provided on the inner wall of the bottom of the cylinder 2, and the recovery hole 20 is connected to the recovery chamber 14. During the coating process, the dripping paint will enter the interior of the recovery chamber 14 through the recovery hole 20, which is convenient for recycling. In addition, a circulation device 19 is provided between the liquid chamber 13 and the recovery chamber 14, including a material pump, a filter box and other structures, to recycle the dripping paint.

[0045] Embodiment 3, the support 1 is provided in multiple numbers, and other corresponding structures are provided in multiple groups, and multiple steel bar bodies 21 are coated at the same time, and there are at least two coating machines, refer to Figure 8 As shown, a plurality of supports 1 are arranged side by side, and coating operations can be performed on a plurality of steel bar bodies 21 at the same time, thereby improving processing efficiency.

[0046] In Example 4, two supports 1 are provided, and other corresponding structures are provided in two groups, and the water-based cold-sprayed zinc coating 22 and the weather-resistant water-based epoxy sealing coating 23 are applied in sequence, referring to Fig. 9 As shown, the cylinders 2 of the two coating machines are arranged coaxially.

[0047] The first one is coated with a water-based cold-sprayed zinc coating 22, and the second one is coated with a weather-resistant water-based epoxy sealing coating 23. At the same time, the second internal heating chamber 4 can dry the water-based cold-sprayed zinc coating 22, and then coat the weather-resistant water-based epoxy sealing coating 23, thereby improving the processing efficiency.

Claims

1. A coating machine, characterized in that: A composite coating structure for coating steel bars, the composite coating structure comprising a steel bar body (21), the exterior of the steel bar body (21) being coated with a water-based cold-sprayed zinc coating (22) and a weather-resistant water-based epoxy sealing coating (23) in sequence, the coating machine comprising a support (1), a cylinder (2) being fixedly connected to the support (1), a partition (3) being fixedly connected to the interior of the cylinder (2), the partition (3) dividing the interior of the cylinder (2) into a heating chamber (4) and a coating chamber (5), rotating cylinders (7) for the steel bar body (21) to pass through being rotatably arranged at both ends of the cylinder (2), wherein a rotating cylinder (7) close to the heating chamber (4) also passes through the partition (3), a heating block (6) being arranged inside the heating chamber (4), and the heating block (6) being fixedly connected to the corresponding rotating cylinder (7).

2. A coating machine according to claim 1, characterized in that: A support plate (8) is fixedly connected to one end of the two rotating drums (7) close to each other, and a rotating shaft (9) is rotatably connected between the two supporting plates (8). The rotating shaft (9) is provided in two numbers, and the two rotating shafts (9) are respectively distributed on both sides of the steel bar body (21), and a coating roller (10) is fixedly connected to the outside of the rotating shaft (9).

3. A coating machine according to claim 2, characterized in that: A first gear (11) is fixedly connected to the inner wall of the cylinder (2), a second gear (12) is fixedly connected to the rotating shaft (9), and the first gear (11) is meshingly connected with the second gear (12).

4. A coating machine according to claim 3, characterized in that: A liquid cavity (13) is provided inside the wall of the cylinder (2), and the liquid cavity (13) is located at the top of the cylinder (2). A circular hole (15) is provided on the inner wall of the top of the cylinder (2), and the circular hole (15) is communicated with the liquid cavity (13). A round rod (16) is slidably provided inside the circular hole (15), and the inner diameter of the circular hole (15) is larger than the outer diameter of the round rod (16). A sealing block (17) is fixedly connected to the top of the round rod (16), and a spring (18) is fixedly connected between the sealing block (17) and the inner wall of the liquid cavity (13), and the coating roller (10) cooperates with the round rod (16).

5. A coating machine according to claim 4, characterized in that: A recovery chamber (14) is provided inside the wall of the cylinder (2), and the recovery chamber (14) is located at the bottom of the cylinder (2). A recovery hole (20) is provided on the inner wall of the bottom of the cylinder (2), and the recovery hole (20) is connected to the recovery chamber (14). A circulation device (19) is provided between the liquid chamber (13) and the recovery chamber (14).

6. A coating machine according to claim 1, characterized in that: The support (1) is arranged in plurality, and a plurality of steel bar bodies (21) are coated simultaneously.

7. A coating machine according to claim 1, characterized in that: The support (1) is provided in two pieces, and is coated with a water-based cold-sprayed zinc coating (22) and a weather-resistant water-based epoxy sealing coating (23) in sequence.

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