A coating and curing apparatus for catheter production

Abstract

The application discloses a kind of coating solidification equipment for catheter production, it is related to medical instrument technical field, coating solidification equipment is used to coating and solidification to catheter, coating solidification equipment includes moving mechanism, and moving mechanism is transversely equipped with several coating mechanisms, and coating mechanism includes liquid storage outer cylinder, liquid storage inner cylinder, liquid storage shelf and cylinder cover, liquid storage inner cylinder is equipped in liquid storage outer cylinder, cylinder cover is equipped on liquid storage outer cylinder, liquid storage outer cylinder is placed on liquid storage shelf, cylinder cover inside is equipped with air outlet ring groove and transition ring groove, and several transmission holes are transversely equipped between air outlet ring groove and transition ring groove, several air inlets are transversely equipped between transition ring groove and cylinder cover outer ring, and the inner ring of air outlet ring groove is equipped with inclined downward chamfer.The coating mechanism and solidification mechanism are integrated on the same moving mechanism in the application, and the whole process of coating and solidification can be completed once descending, without intermediate transfer and waiting to drip dry, and multiple stations work in parallel, whole row of catheter is handled simultaneously, realizes continuous operation, and improves production efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically a coating and curing device for catheter production. Background Technology

[0002] In interventional medicine, many catheter products require surface coatings such as hydrophilic lubricating coatings, anticoagulant coatings, or drug-eluting coatings to reduce friction during catheter insertion, minimize vascular damage, or enable local drug delivery. The uniformity, durability, and defect-free nature of the coating are crucial for ensuring the clinical performance of the catheter.

[0003] Currently, the mainstream process for coating conduits still uses dip coating: the entire conduit is vertically immersed in an open tank filled with coating liquid, ensuring complete submersion. It is then slowly lifted, allowing excess liquid to drip off due to gravity, and finally transferred to a separate curing oven or UV curing chamber for curing. This traditional method has the following significant drawbacks: Significant waste of coating liquid, as the dip coating tank needs to hold sufficient depth and volume of coating liquid to completely submerge the entire conduit; low production efficiency, as dip coating and curing are two separate processes; manual transfer of the conduit to curing equipment after dip coating, during which the coating surface is susceptible to contamination or sagging; and the inability to achieve continuous coating and curing operations, resulting in long batch production cycles. In some existing solutions attempting to integrate coating and curing, the heat source for curing is too close to the coated component, causing heat transfer that raises the temperature of the coating liquid inside the coating tank, accelerates solvent evaporation, and dynamically changes the viscosity and solids content of the coating liquid, severely impacting the batch stability of the coating quality. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of serious waste of coating liquid, low production efficiency, poor coating quality consistency and thermal interference during coating and curing in the prior art, and to propose a coating and curing equipment for conduit production.

[0005] To address the above problems, the present invention provides the following technical solution: A coating and curing device for catheter production, the coating and curing device is used to coat and cure catheters, the coating and curing device includes a moving mechanism, and a plurality of coating mechanisms are arranged laterally on the moving mechanism. The coating mechanism includes an outer liquid storage cylinder, an inner liquid storage cylinder, a liquid storage rack, and a cylinder cover. The outer liquid storage cylinder contains the inner liquid storage cylinder, and the outer liquid storage cylinder is equipped with a cylinder cover. The outer liquid storage cylinder is placed on the liquid storage rack. The moving mechanism includes a moving plate; The cylinder cover has an air outlet groove and a transition groove inside. There are several transmission holes circumferentially between the air outlet groove and the transition groove, and several air inlet holes circumferentially between the transition groove and the outer ring of the cylinder cover. The inner ring of the air outlet groove has a downward-sloping chamfer; One end of the conduit passes through the air outlet groove, and a liquid storage rack is provided on one side of the movable plate.

[0006] The outer ring of the conduit is coated and cured using a coating and curing device. First, the conduit is fixed in position. Then, a moving mechanism drives the coating mechanism to coat the conduit from top to bottom. When the moving plate moves, it drives the liquid storage rack to move up and down. The outer liquid storage cylinder is fixed on the liquid storage rack, and the inner liquid storage cylinder is placed inside the outer liquid storage cylinder. The inner liquid storage cylinder is filled with coating liquid. Since the conduit passes through the outer liquid storage cylinder, the inner liquid storage cylinder, and the cap, the coating mechanism can directly apply the coating liquid to the conduit when it moves. The air outlet groove inside the cap allows air to enter. The air enters the transition groove through the air inlet hole, and then enters the air outlet groove through the transfer hole. When the air is sprayed out from the air outlet groove, it forms an air curtain, which can pre-dry the conduit after coating. In addition, the chamfer in the air outlet groove causes the air to spray out diagonally downward, blowing off the excess coating liquid on the conduit, thereby reducing coating sagging and improving coating uniformity.

[0007] Furthermore, the coating mechanism also includes an air pump, the outlet of which is equipped with an air pipe; The axis of the air inlet is tangent to the inner diameter of the transition ring groove; The air duct and the air inlet pipe are connected.

[0008] The air pump delivers air to the air inlet through the air pipe. Since the axis of the air inlet is tangent to the inner diameter of the transition ring groove, the air flows with the annular channel after entering the transition ring groove, making the air evenly distributed in the transition ring groove. Then, it enters the air outlet ring groove stably through the transfer hole, ensuring that the air curtain sprayed from the air outlet ring groove has uniformity and stability. This further optimizes the effect of blowing off excess coating liquid on the duct surface, while avoiding coating defects caused by uneven airflow.

[0009] Furthermore, a flexible connecting rope is provided below the cylinder cover, and an annular spoiler is provided below the flexible connecting rope; The annular spoiler is provided with minor interference flow holes, and minor interference flow needles are provided below the annular spoiler near the inner diameter. The conduit passes through an annular baffle, the outer diameter of which is smaller than the inner diameter of the liquid storage cylinder. The annular baffle is placed on the coating liquid surface inside the liquid storage cylinder.

[0010] The annular baffle is suspended below the cylinder cover by a flexible connecting rope. Its position can be automatically adjusted according to the liquid level of the coating liquid. When the coating mechanism is opened, closed or running, the coating liquid inside is prone to shaking. The annular baffle floats on the surface of the coating liquid, which can effectively reduce the bubble phenomenon caused by shaking. The design of the baffle hole makes the coating liquid form a uniform liquid flow distribution during the flow process, while the baffle needle further disperses any bubbles that may be formed, preventing bubbles from adhering to the surface of the conduit and causing coating defects.

[0011] Furthermore, the outer ring of the liquid storage cylinder is symmetrically provided with flat grooves, and the outer cylinder is provided with an annular frame; The liquid storage rack is equipped with a U-shaped opening, and symmetrical sliding inlets are provided on the outside of the U-shaped opening; The diameter of the U-shaped opening is smaller than the diameter of the ring frame, the diameter of the U-shaped opening is larger than the diameter of the outer ring of the liquid storage outer cylinder, and the distance between the sliding inlets is smaller than the diameter of the outer ring of the liquid storage outer cylinder. During installation: the flat groove and the sliding inlet are slidably connected; After installation: The outer cylinder of the liquid storage tank passes through the U-shaped opening, and the ring frame is placed on the U-shaped opening.

[0012] The outer reservoir cylinder is quickly installed and positioned via a combination of a flat groove and a sliding inlet. A ring-shaped frame ensures its stable placement on the U-shaped opening, preventing shaking or displacement during operation. This structure not only improves assembly efficiency but also enhances overall stability, providing reliable assurance for subsequent coating processes. Simultaneously, the U-shaped opening and sliding inlet effectively restrict the position of the outer reservoir cylinder. One side of the flat groove of the outer reservoir cylinder enters the U-shaped opening through the sliding inlet. After installation, the outer reservoir cylinder is rotated for secure positioning.

[0013] Furthermore, the outer ring of the liquid storage cylinder is provided with several observation grooves, the inner cylinder of the liquid storage cylinder is provided with a groove, and the groove is provided with a cross-shaped cut. The inner cylinder of the liquid storage cylinder is made of transparent silicone material.

[0014] The observation slot allows direct observation of the inner reservoir. The use of transparent silicone not only facilitates the observation of the remaining coating liquid inside the reservoir but also ensures excellent sealing performance. The recessed design at the bottom of the inner reservoir, combined with a cross-shaped cut in both directions, with only one point connecting the two cuts, allows the conduit to automatically pass through. This ensures a high level of sealing for conduits of different sizes, improving the seal between the conduit and the bottom of the inner reservoir and effectively preventing coating liquid spillage or contamination. This self-sealing structure, while ensuring coating accuracy, also significantly reduces the contact area between the coating liquid and the outside air, further minimizing the possibility of solvent evaporation.

[0015] Furthermore, the moving mechanism also includes a linear guide rail and a guide sleeve. The linear guide rail and the moving plate are slidably connected. The moving plate is provided with a guide sleeve, and the guide tube passes through the guide sleeve.

[0016] The guide sleeve precisely guides the movement of the conduit, ensuring its stability during coating and curing. The sliding connection between the linear guide rail and the moving plate allows the moving plate to move smoothly up and down, thus driving the coating mechanism. The guide sleeve not only improves the reliability of equipment operation but also effectively reduces uneven coating caused by mechanical vibration or misalignment. Furthermore, the inner wall of the guide sleeve is specially treated to have a low coefficient of friction, further reducing the resistance of the conduit during passage and ensuring smooth operation.

[0017] Furthermore, the coating and curing equipment also includes a curing mechanism, a fixing mechanism, a frame, and a control cabinet. The control cabinet is located on one side of the frame, and a linear guide rail is located inside the frame. Fixing mechanisms are symmetrically located at the upper and lower ends of the frame. Several curing mechanisms are arranged horizontally on the moving plate. The curing mechanisms are placed between the guide sleeve and the coating mechanism. The curing mechanisms are coaxially arranged with the guide sleeve and the coating mechanism, respectively. The two ends of the guide tube are respectively engaged with the fixing mechanisms on both sides.

[0018] The curing mechanism is used to heat-cure the coating on the surface of the coated conduit. The fixing mechanism is used to clamp and fix the conduit before coating to facilitate subsequent coating and curing operations. The frame is used to support and fix the entire equipment. The linear guide rail, fixing mechanism and control cabinet are all fixed on the frame. The control cabinet can control the operation of the entire process according to the preset program.

[0019] Furthermore, the curing mechanism includes a heat radiation sleeve and a fixing frame. The fixing frame is provided on one side of the movable plate, and the heat radiation sleeve is provided on the fixing frame. The heat radiation sleeve has a heating column inside, and the conduit passes through the heating column.

[0020] The heating column inside the heat radiation sleeve provides uniform heating to the conduit, ensuring consistent heating of the coating during curing and preventing curing defects caused by uneven temperature. The heating column can reach the set temperature quickly and precisely adjust the temperature, stably transferring heat to the conduit surface through the heat radiation sleeve, thereby improving curing efficiency. The mounting bracket not only provides stable support for the heat radiation sleeve but also ensures the coaxiality between the heating column and the conduit, further optimizing the curing effect. Furthermore, the air curtain generated by the cap between the heat radiation sleeve and the coating mechanism effectively isolates thermal interference during curing, preventing viscosity changes or excessive solvent evaporation due to temperature increases in the coating liquid, ensuring the stability of the coating quality.

[0021] Furthermore, the fixing mechanism includes a fixing plate, pneumatic clamps and guides. The fixing plate is fixed to the frame, and several pneumatic clamps and guides are arranged laterally on the fixing plate. The conduit passes through the pneumatic clamps and guides, and the guides and guide sleeves are coaxially arranged.

[0022] The pneumatic clamps achieve rapid clamping and releasing of the conduits through air pressure control. Their clamping force can be adjusted according to the conduit material and coating characteristics, thus avoiding surface damage or coating deformation due to excessive clamping. The guide design further enhances the stability of the conduits during the fixing process, maintaining coaxial alignment with the guide sleeve to ensure the conduits remain straight throughout the coating and curing process. The fixing plate is securely connected to the frame, providing reliable support for the pneumatic clamps and guides. This fixing method not only simplifies the conduit installation and removal process but also significantly improves production efficiency and reduces errors that may be caused by manual intervention. Furthermore, the coordinated operation of the fixing and moving mechanisms allows for the simultaneous processing of an entire row of conduits, further optimizing the equipment's continuous operation capability.

[0023] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention isolates thermal interference through the air curtain blown out by the air outlet ring groove, ensuring the temperature of the coating liquid in the coating cylinder is stable, and the air curtain can pre-dry the newly coated conduit, thereby reducing coating sagging and improving coating uniformity. The baffle plate effectively inhibits the generation and adhesion of bubbles, avoids coating pinhole defects, improves coating quality, and reduces the defect rate. 2. This invention integrates the coating mechanism and the curing mechanism on the same moving mechanism, so that the coating and curing process can be completed in one downward movement without intermediate transfer or waiting for dripping. Moreover, multiple stations work in parallel, and the entire row of conduits is processed at the same time, realizing continuous operation and improving production efficiency. 3. The present invention has a self-sealing structure with a movable liquid storage inner cylinder and a front and back cross cut. The liquid storage inner cylinder only needs to hold a small amount of coating liquid, and the liquid does not come into open contact with the outside. The solvent evaporates very little, and it can be replenished when it is used up, with almost no waste. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the coating mechanism and curing mechanism of the present invention; Figure 3 This is a schematic diagram of the structure of the cap of the present invention; Figure 4 This is a cross-sectional view of the cap of the present invention; Figure 5 This is a schematic diagram of the internal structure of the coating mechanism and curing mechanism of the present invention; Figure 6 for Figure 5 A magnified view of part A of the view; Figure 7 This is a schematic diagram of the coating mechanism of the present invention.

[0025] In the diagram: 1. Coating mechanism; 11. Outer reservoir cylinder; 111. Observation slot; 112. Flat groove; 113. Annular frame; 12. Inner reservoir cylinder; 121. Positive and negative cross cuts; 13. Reservoir rack; 131. U-shaped opening; 132. Sliding inlet; 14. Cylinder cover; 141. Air outlet annular groove; 142. Transfer hole; 143. Transition annular groove; 144. Air inlet; 15. Air pump; 16. Air pipe; 17. Flexible connecting rope; 18. Annular baffle; 181. Baffle hole; 182. Baffle needle; 2. Conduit; 3. Moving mechanism; 31. Moving plate; 32. Linear guide rail; 33. Guide sleeve; 4. Curing mechanism; 41. Heat radiation sleeve; 42. Heating column; 43. Fixing frame; 5. Fixing mechanism; 51. Fixing plate; 52. Pneumatic clamp; 53. Guide component; 6. Frame; 7. Control cabinet. Detailed Implementation

[0026] The embodiments of the present invention will now be further described in conjunction with the accompanying drawings and examples.

[0027] Example: Figures 1-7 As shown, the present invention provides a technical solution: a coating and curing device for catheter production.

[0028] like Figures 1-3 As shown, a coating and curing device for conduit production is used to coat and cure conduit 2. The coating and curing device includes a moving mechanism 3, on which a plurality of coating mechanisms 1 are arranged laterally. The coating mechanism 1 includes an outer liquid storage cylinder 11, an inner liquid storage cylinder 12, a liquid storage rack 13, and a cylinder cover 14. The outer liquid storage cylinder 11 is provided with the inner liquid storage cylinder 12, and the outer liquid storage cylinder 11 is provided with the cylinder cover 14. The outer liquid storage cylinder 11 is placed on the liquid storage rack 13. The moving mechanism 3 includes a moving plate 31; The cylinder cover 14 is provided with an air outlet ring groove 141 and a transition ring groove 143 inside. A number of transmission holes 142 are provided circumferentially between the air outlet ring groove 141 and the transition ring groove 143. A number of air inlet holes 144 are provided circumferentially between the transition ring groove 143 and the outer ring of the cylinder cover 14. The inner ring of the air outlet groove 141 has a downward-sloping chamfer; One end of the conduit 2 passes through the air outlet ring groove 141, and a liquid storage rack 13 is provided on one side of the movable plate 31.

[0029] The outer ring of the conduit 2 is coated and cured using a coating and curing device. First, the conduit 2 is fixed in position. Then, the coating mechanism 1, driven by the moving mechanism 3, performs a top-to-bottom coating operation on the conduit 2. When the moving plate 31 moves, it causes the liquid storage rack 13 to move up and down. The outer liquid storage cylinder 11 is fixed on the liquid storage rack 13, and the inner liquid storage cylinder 12 is placed inside the outer liquid storage cylinder 11. The inner liquid storage cylinder 12 is filled with coating liquid. Since the conduit 2 passes through the outer liquid storage cylinder 11, the inner liquid storage cylinder 12, and the cap 14, the coating mechanism 1 can move freely during operation. The coating liquid is directly applied to the conduit 2. Air can be introduced into the air outlet groove 141 inside the cylinder cover 14. The air enters the transition groove 143 through the air inlet 144, and then enters the air outlet groove 141 through the transfer hole 142. When the air is sprayed out from the air outlet groove 141, it forms an air curtain, which can pre-dry the conduit 2 that has just been coated. In addition, the chamfer in the air outlet groove 141 causes the air to spray out obliquely downward, blowing off the excess coating liquid on the conduit 2, thereby reducing coating sagging and improving coating uniformity.

[0030] like Figures 3-4 As shown, the coating mechanism 1 also includes an air pump 15, and the outlet of the air pump 15 is provided with an air pipe 16; The axis of the air inlet 144 is tangent to the inner diameter of the transition annular groove 143; The air pipe 16 and the air inlet 144 are connected.

[0031] Air pump 15 delivers air to air inlet 144 through air pipe 16. Since the axis of air inlet 144 is tangent to the inner diameter of transition ring groove 143, the air flows with the annular channel after entering transition ring groove 143, making the air evenly distributed in transition ring groove 143. Then, it enters the outlet ring groove 141 stably through transfer hole 142, ensuring that the air curtain sprayed from outlet ring groove 141 has uniformity and stability, thereby further optimizing the effect of blowing off excess coating liquid on the surface of duct 2, while avoiding coating defects caused by uneven airflow.

[0032] like Figures 5-6 As shown, a flexible connecting rope 17 is provided below the cylinder cover 14, and an annular baffle 18 is provided below the flexible connecting rope 17. The annular spoiler 18 is provided with a minor interference flow hole 181, and the annular spoiler 18 is provided with a minor interference flow needle 182 at the lower part of the inner diameter. The conduit 2 passes through the annular baffle 18, the outer diameter of which is smaller than the inner diameter of the liquid storage cylinder 12. The annular baffle 18 is placed on the coating liquid surface inside the liquid storage cylinder 12.

[0033] The annular baffle 18 is suspended below the cylinder cover 14 by a flexible connecting rope 17. Its position can be automatically adjusted according to the liquid level of the coating liquid. When the coating mechanism 1 is opened, closed or running, the coating liquid inside is prone to shaking. The annular baffle 18 floats on the surface of the coating liquid, which can effectively reduce the bubble phenomenon caused by shaking. The design of the baffle hole 181 makes the coating liquid form a uniform liquid flow distribution during the flow process, while the baffle needle 182 further disperses the bubbles that may be formed, avoiding bubbles from adhering to the surface of the conduit 2 and causing coating defects.

[0034] like Figure 7 As shown, the outer ring of the liquid storage cylinder 11 is symmetrically provided with flat grooves 112, and the outer ring of the liquid storage cylinder 11 is provided with an annular frame 113; The liquid storage rack 13 is provided with a U-shaped opening 131, and symmetrical sliding inlets 132 are provided on the outside of the U-shaped opening 131; The diameter of the U-shaped opening 131 is smaller than the diameter of the ring frame 113, the diameter of the U-shaped opening 131 is larger than the outer ring diameter of the liquid storage outer cylinder 11, and the distance between the sliding inlets 132 is smaller than the outer ring diameter of the liquid storage outer cylinder 11. During installation: the flat groove 112 and the sliding inlet 132 are slidably connected; After installation: the outer cylinder 11 of the liquid storage tank passes through the U-shaped opening 131, and the ring frame 113 is placed on the U-shaped opening 131.

[0035] The liquid storage outer cylinder 11 is quickly installed and positioned through the cooperation of the flat groove 112 and the sliding inlet 132. The ring frame 113 ensures that it is stably placed on the U-shaped opening 131, preventing shaking or displacement during operation. This structure not only improves the assembly efficiency of the equipment but also enhances the overall stability, providing a reliable guarantee for the subsequent coating process. At the same time, the U-shaped opening 131 and the sliding inlet 132 can effectively restrict the position of the liquid storage outer cylinder 11. One side of the flat groove 112 of the liquid storage outer cylinder 11 enters the U-shaped opening 131 through the sliding inlet 132. After installation, the liquid storage outer cylinder 11 is rotated for secure positioning.

[0036] like Figure 7 As shown, the outer cylinder 11 of the liquid storage is provided with several observation grooves 111 around its outer circumference, and the inner cylinder 12 of the liquid storage is provided with a groove, and the groove is provided with a cross-shaped cut 121. The inner cylinder 12 of the liquid storage is made of transparent silicone.

[0037] The inner reservoir 12 can be directly observed through the observation slot 111. The use of transparent silicone not only facilitates the observation of the remaining amount of coating liquid inside the inner reservoir 12, but also ensures its excellent sealing performance. The design of the groove at the bottom of the inner reservoir 12, combined with the positive and negative cross-shaped cuts 121, with only one point connecting the two cuts, allows the conduit 2 to automatically pass through the cross-shaped cuts 121. Conduits 2 of different sizes can achieve a high sealing effect, improving the sealing between the conduit 2 and the bottom of the inner reservoir 12, thereby effectively preventing the coating liquid from overflowing or contaminating. This self-sealing structure, while ensuring coating accuracy, also significantly reduces the contact area between the coating liquid and the outside air, further reducing the possibility of solvent evaporation.

[0038] like Figures 1-2 As shown, the moving mechanism 3 also includes a linear guide rail 32 and a guide sleeve 33. The linear guide rail 32 and the moving plate 31 are slidably connected. The moving plate 31 is provided with a guide sleeve 33, and the guide tube 2 passes through the guide sleeve 33.

[0039] The guide sleeve 33 precisely guides the movement of the conduit 2, ensuring its stability during coating and curing. The sliding connection between the linear guide rail 32 and the moving plate 31 allows the moving plate 31 to move smoothly up and down, thereby driving the coating mechanism 1. The guide sleeve 33 not only improves the reliability of equipment operation but also effectively reduces uneven coating caused by mechanical vibration or misalignment. Furthermore, the inner wall of the guide sleeve 33 is specially treated to have a low coefficient of friction, further reducing the resistance of the conduit 2 during its movement and ensuring smooth operation.

[0040] like Figure 1 As shown, the coating and curing equipment also includes a curing mechanism 4, a fixing mechanism 5, a frame 6, and a control cabinet 7. The control cabinet 7 is located on one side of the frame 6. A linear guide rail 32 is located inside the frame 6. Fixing mechanisms 5 are symmetrically located at the upper and lower ends of the frame 6. Several curing mechanisms 4 are arranged horizontally on the moving plate 31. The curing mechanism 4 is placed between the guide sleeve 33 and the coating mechanism 1. The curing mechanism 4 is coaxially arranged with the guide sleeve 33 and the coating mechanism 1 respectively. The two ends of the conduit 2 are respectively engaged with the fixing mechanisms 5 on both sides.

[0041] The curing mechanism 4 is used to heat-cure the coating on the surface of the coated conduit 2. The fixing mechanism 5 is used to clamp and fix the conduit 2 before coating so that subsequent coating and curing operations can be carried out. The frame 6 is used to support and fix the entire equipment. The linear guide rail 32, the fixing mechanism 5 and the control cabinet 7 are all fixed on the frame 6. The control cabinet 7 can control the operation of the entire process flow according to the preset program.

[0042] like Figure 5As shown, the curing mechanism 4 includes a heat radiation sleeve 41 and a fixing frame 43. The fixing frame 43 is provided on one side of the moving plate 31, and the heat radiation sleeve 41 is provided on the fixing frame 43. The heat radiation sleeve 41 is provided with a heating column 42 inside, and the conduit 2 passes through the heating column 42.

[0043] The heating column 42 inside the heat radiation sleeve 41 can uniformly heat the conduit 2, ensuring consistent heating of the coating during curing and avoiding curing defects caused by uneven temperature. The heating column 42 can reach the set temperature in a short time and precisely adjust the temperature, stably transferring heat to the surface of the conduit 2 through the heat radiation sleeve 41, thereby improving curing efficiency. The fixing bracket 43 not only provides stable support for the heat radiation sleeve 41 but also ensures the coaxiality between the heating column 42 and the conduit 2, further optimizing the curing effect. In addition, the air curtain generated by the cap 14 between the heat radiation sleeve 41 and the coating mechanism 1 effectively isolates thermal interference during the curing process, preventing viscosity changes or excessive solvent evaporation of the coating liquid due to temperature increases, and ensuring the stability of coating quality.

[0044] like Figure 2 As shown, the fixing mechanism 5 includes a fixing plate 51, a pneumatic clamp 52 and a guide 53. The fixing plate 51 is fixed on the frame 6. Several pneumatic clamps 52 and guides 53 are arranged horizontally on the fixing plate 51. The conduit 2 passes through the pneumatic clamps 52 and guides 53. The guides 53 and the guide sleeve 33 are coaxially arranged.

[0045] The pneumatic clamp 52 achieves rapid clamping and releasing of the conduit 2 through air pressure control. Its clamping force can be adjusted according to the material and coating characteristics of the conduit 2, thus avoiding surface damage or coating deformation due to excessive clamping. The guide 53 further enhances the stability of the conduit 2 during the fixing process, maintaining coaxiality with the guide sleeve 33 to ensure the conduit 2 remains straight throughout the coating and curing process. The fixing plate 51 is securely connected to the frame 6, providing reliable support for the pneumatic clamp 52 and the guide 53. This fixing method not only simplifies the installation and disassembly process of the conduit 2 but also significantly improves production efficiency and reduces errors that may be caused by manual intervention. Furthermore, the coordinated operation of the fixing mechanism 5 and the moving mechanism 3 allows for the simultaneous processing of an entire row of conduits 2, further optimizing the equipment's continuous operation capability.

[0046] Working principle of the invention: After the coating and curing equipment is started, the control cabinet 7 controls the operation of the entire process flow according to the preset program. First, the conduit 2 is fixed on the fixing mechanism 5. The pneumatic clamp 52 achieves a stable clamping of the conduit 2 through air pressure adjustment, while the guide 53 ensures that the conduit 2 remains coaxial with the coating mechanism 1 and the curing mechanism 4. Subsequently, the moving mechanism 3 drives the coating mechanism 1 to perform coating operations from top to bottom. During this process, the air curtain blown out by the air outlet ring groove 141 pre-dries the area that has just been coated, effectively reducing sagging and improving coating uniformity. In addition, the annular baffle 18 floats on the liquid surface of the liquid storage cylinder 12 and automatically adjusts its position with the flow of the coating liquid. The baffle holes 181 and baffle needles 182 on it work together to suppress the generation and adhesion of air bubbles and avoid pinhole defects in the coating. After the coating is completed, the conduit 2 enters the curing stage. The heating column 42 inside the heat radiation sleeve 41 evenly transfers heat to the surface of the conduit 2, so that the coating cures quickly. Because the coating mechanism 1 and the curing mechanism 4 are integrated on the same moving mechanism 3, the conduit 2 can complete the entire process without intermediate transfer, significantly improving production efficiency. Furthermore, the equipment adopts a multi-station parallel design, allowing the entire row of conduits 2 to undergo coating and curing simultaneously, further optimizing continuous operation capabilities. Through the coordinated work of each mechanism, the equipment achieves efficient and high-quality coating and curing operations for the conduits 2, meeting the stringent requirements of modern industry for coating quality and production efficiency.

[0047] The above description is merely a preferred embodiment of the present invention. Any modifications and / or equivalent substitutions and / or improvements made within the scope of the technical solutions claimed in the claims of this application should be included within the protection scope of the present invention. The protection scope of this application is determined by the technical solutions in the claims and their equivalents, and is not limited by the specific description in the specification.

Claims

1. A coating and curing apparatus for producing conduits, the coating and curing apparatus being used to coat and cure conduits (2), characterized in that: The coating and curing equipment includes a moving mechanism (3), and a plurality of coating mechanisms (1) are arranged laterally on the moving mechanism (3). The coating mechanism (1) includes an outer liquid storage cylinder (11), an inner liquid storage cylinder (12), a liquid storage rack (13), and a cylinder cover (14). The outer liquid storage cylinder (11) is provided with the inner liquid storage cylinder (12), and the outer liquid storage cylinder (11) is provided with a cylinder cover (14). The outer liquid storage cylinder (11) is placed on the liquid storage rack (13). The moving mechanism (3) includes a moving plate (31); The cylinder cover (14) is provided with an air outlet groove (141) and a transition groove (143) inside. A plurality of transmission holes (142) are provided circumferentially between the air outlet groove (141) and the transition groove (143). A plurality of air inlet holes (144) are provided circumferentially between the transition groove (143) and the outer ring of the cylinder cover (14). The inner ring of the air outlet groove (141) is provided with a downward-sloping chamfer; One end of the conduit (2) passes through the air outlet groove (141), and a liquid storage rack (13) is provided on one side of the movable plate (31).

2. The coating and curing equipment for conduit production according to claim 1, characterized in that: The coating mechanism (1) also includes an air pump (15), and the outlet of the air pump (15) is provided with an air pipe (16). The axis of the air inlet (144) is tangent to the inner diameter of the transition annular groove (143); The air pipe (16) and the air inlet (144) are connected.

3. The coating and curing equipment for conduit production according to claim 2, characterized in that: A flexible connecting rope (17) is provided below the cylinder cover (14), and an annular baffle (18) is provided below the flexible connecting rope (17). The annular spoiler (18) is provided with a few interference flow holes (181), and the annular spoiler (18) is provided with a few interference flow needles (182) near the inner diameter below the annular spoiler (18). The conduit (2) passes through the annular baffle (18), the outer diameter of which is smaller than the inner diameter of the liquid storage cylinder (12), and the annular baffle (18) is placed on the coating liquid surface inside the liquid storage cylinder (12).

4. The coating and curing equipment for conduit production according to claim 3, characterized in that: The outer ring of the liquid storage cylinder (11) is symmetrically provided with flat grooves (112), and the outer ring of the liquid storage cylinder (11) is provided with an annular frame (113). The liquid storage rack (13) is provided with a U-shaped opening (131), and sliding inlets (132) are symmetrically provided on the outside of the U-shaped opening (131). The diameter of the U-shaped opening (131) is smaller than the diameter of the ring frame (113), the diameter of the U-shaped opening (131) is larger than the outer ring diameter of the liquid storage outer cylinder (11), and the distance between the sliding inlets (132) is smaller than the outer ring diameter of the liquid storage outer cylinder (11). During installation: the flat groove (112) and the sliding inlet (132) are slidably connected; After installation: the liquid storage outer cylinder (11) passes through the U-shaped opening (131), and the ring frame (113) is placed on the U-shaped opening (131).

5. The coating and curing equipment for conduit production according to claim 4, characterized in that: The outer cylinder (11) of the liquid storage is provided with several observation grooves (111) around its outer circumference, and the bottom of the inner cylinder (12) of the liquid storage is provided with a groove, and the groove is provided with a cross cut (121) in both directions. The inner cylinder (12) of the liquid storage is made of transparent silicone material.

6. The coating and curing equipment for conduit production according to claim 5, characterized in that: The moving mechanism (3) also includes a linear guide rail (32) and a guide sleeve (33). The linear guide rail (32) and the moving plate (31) are slidably connected. The moving plate (31) is provided with a guide sleeve (33), and the conduit (2) passes through the guide sleeve (33).

7. The coating and curing equipment for conduit production according to claim 6, characterized in that: The coating and curing equipment also includes a curing mechanism (4), a fixing mechanism (5), a frame (6) and a control cabinet (7). The control cabinet (7) is provided on one side of the frame (6). A linear guide rail (32) is provided inside the frame (6). The fixing mechanisms (5) are symmetrically provided at the upper and lower ends of the frame (6). Several curing mechanisms (4) are provided horizontally on the moving plate (31). The curing mechanism (4) is placed between the guide sleeve (33) and the coating mechanism (1). The curing mechanism (4) is coaxially arranged with the guide sleeve (33) and the coating mechanism (1) respectively. The two ends of the conduit (2) are respectively engaged with the fixing mechanisms (5) on both sides.

8. The coating and curing equipment for conduit production according to claim 7, characterized in that: The curing mechanism (4) includes a heat radiation sleeve (41) and a fixing frame (43). The fixing frame (43) is provided on one side of the moving plate (31). The heat radiation sleeve (41) is provided on the fixing frame (43). The heating column (42) is provided inside the heat radiation sleeve (41). The conduit (2) passes through the heating column (42).

9. A coating and curing device for conduit production according to claim 8, characterized in that: The fixing mechanism (5) includes a fixing plate (51), a pneumatic clamp (52) and a guide (53). The fixing plate (51) is fixed on the frame (6). Several pneumatic clamps (52) and guides (53) are arranged horizontally on the fixing plate (51). The conduit (2) passes through the pneumatic clamps (52) and guides (53). The guides (53) and guide sleeves (33) are coaxially arranged.

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