Coating system for a tubular instrument

Abstract

The utility model discloses a kind of coating processing systems of tubular instrument, including rack, the rack is sequentially from front to rear soaking zone, airing zone and solidification zone, rack is provided with a plurality of hangers above three processing areas, the hanger of soaking zone is further connected with lifting mechanism;Soaking zone is provided with coating container, at least one stirring rod is provided in the coating container, the stirring rod is located coating container bottom;Airing zone is provided with recovery container, recovery container and coating container between are provided with reflux pipe;Solidification zone is provided with a plurality of evenly arranged UV lamps, the UV lamp is located rack side face.Integration of three processing areas, the whole flow process processing of catheter processing can be realized.The stirring rod in the coating container of soaking zone can agitate coating, promote the flow of fluid in coating, accelerate the elimination of bubble in coating, also can avoid the stratification and deposition of coating, can reduce the problem and illness of pipe body coating coating, improve the efficiency of coating processing.

Description

Technical Field

[0001] This utility model relates to the field of medical device processing equipment, and more particularly to a coating processing system for tubular instruments. Background Technology

[0002] In the field of medical devices, various types of catheters are widely used. Catheters are usually thin tubes made of medical consumables that can be inserted into cavities in the body (blood vessels, organs) to input or output liquids or gases, and to assist in other operations. According to their function, catheters can be divided into various types such as interventional catheters, digestive tract catheters, respiratory catheters, urinary system catheters, drainage tubes, sheaths, insertion tubes, etc. Different catheters usually have a hydrophilic coating on their outer surface to help them enter the body.

[0003] Currently, the general process for applying hydrophilic coatings to pipes involves pouring the hydrophilic coating into a container, immersing the pipe in the coating, drying the fully soaked pipe on a drying rack, and finally transferring it to a UV curing cabinet for UV curing.

[0004] The above coating process has many problems. For example, when the solution is poured into the container, many small air bubbles are introduced. Because the coating solution is viscous, these small air bubbles do not float to the surface. As a result, when the coating is applied to the pipe, these air bubbles adhere to the pipe surface. After the coating cures, they form bubble marks on the outer surface of the pipe, and the adhesion of the coating in this location is also compromised. Furthermore, the solvent for the coating is generally a volatile substance such as ethanol. During the immersion coating process, the solvent exposed to air continuously evaporates, causing uneven viscosity between the upper and lower layers of the solution. The viscous solution forms lumps that adhere to the pipe, leading to poor coating accumulation after curing. Summary of the Invention

[0005] In order to overcome at least one of the technical problems of the prior art, the present invention provides a coating processing system for a tubular instrument that can reduce paint bubbles and improve paint coating efficiency.

[0006] A coating processing system for tubular instruments is provided, including a frame, which consists of an immersion zone, a drying zone, and a curing zone from front to back. Several hangers are mounted on the frame above the three processing zones, and the hangers in the immersion zone are connected to a lifting mechanism. A coating container is provided in the immersion zone, and at least one stirring rod is installed inside the coating container at its bottom. A recovery container is provided in the drying zone, and a return pipe is installed between the recovery container and the coating container. Several uniformly arranged UV lamps are provided in the curing zone, located on the side of the frame.

[0007] The aforementioned coating system for tubular instruments offers at least the following advantages: By integrating three processing zones, it enables the entire process of tubular instrument fabrication. The stirring rod within the coating container in the immersion zone agitates the coating, promoting fluid flow, accelerating the elimination of air bubbles, and preventing coating stratification and deposition. Positioning the stirring rod at the bottom accelerates the movement of coating material deposited at the bottom and reduces the entry of gas into the coating solution during agitation. The stirring rod reduces problems and defects in the coating of the tubular body, improving the efficiency of coating processing.

[0008] In some embodiments of the coating system for the aforementioned tubular instrument, the coating container is provided with a liquid inlet, which is inclined and positioned on the side of the coating container. Coating is added into the coating container through the liquid inlet, allowing for the addition of replenished coating or solvent at any time. The inclined liquid inlet causes the added liquid to flow along the inner wall of the container, reducing the impact of the addition and minimizing the entry of gas into the solution during the addition process.

[0009] In some embodiments of the coating processing system for the aforementioned tubular instruments, a transport mechanism is further provided on the frame. The transport mechanism includes a drive device and a conveying device. The conveying device is connected to the moving end of the drive device, and the drive device drives the conveying device to move along the frame. Hangers are mounted on the conveying device, and a lifting mechanism is provided between each hanger and the conveying device. The automated transport mechanism can automatically move the tube body within three processing areas, realizing automated coating processing and improving the efficiency of the coating process.

[0010] In some embodiments of the coating processing system for the aforementioned tubular instruments, a filter screen is installed inside the return pipe. This filters out impurities from the recycled coating, preventing impurities from adhering to the pipe body and reducing defective products in the coating processing.

[0011] In some embodiments of the coating processing system for the aforementioned tubular instruments, the drying zone is further equipped with a heating device, and a heat insulation device is provided between the drying zone and the soaking zone. The heating device helps the coating dry faster and prevents the adhesion of impurities during the drying process, while the heat insulation device separates the coating container and prevents the coating inside the container from hardening.

[0012] In some embodiments of the coating processing system for the aforementioned tubular instruments, a light-shielding plate is provided between the curing zone and the drying zone, and the light-shielding plate is located on both sides of the frame. The light-shielding plate reduces the amount of UV light entering the drying zone, prevents the tubing in the drying zone from being irradiated by UV rays, ensures that the coating thickness of each tubing is consistent, and improves the processing yield of the tubing.

[0013] In some embodiments of the coating system for the aforementioned tubular instrument, the stirring rod is horizontally positioned inside the coating container, and the stirring rod is equipped with helical blades. The horizontal placement of the stirring rod at the bottom of the coating container ensures full contact with the coating, while the helical blades improve stirring efficiency and prevent gas from entering the liquid surface and generating bubbles.

[0014] In some embodiments of the coating system for the aforementioned tubular instruments, the conveying device of the frame includes a conveyor chain, the driving device includes a drive motor and a drive wheel connected to each other, the drive wheel is connected to the conveyor chain, the frame is also provided with a conveyor track plate, and the lifting device includes a lifting cylinder mounted on the mounting plate, with multiple clamping components at the bottom of the mounting plate. Multiple workpieces can be mounted at once using the clamping components, and the conveying device transports the workpieces along the conveyor track for coating processing, making the entire process more automated and efficient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0017] Figure 2 This is a front view of the frame of the preferred embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the stirring rod in a preferred embodiment of the present invention. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Reference Figures 1 to 3 A coating system for tubular instruments includes a frame 100, which comprises, from front to back, an immersion zone 110, a drying zone 120, and a curing zone 130. Several hangers are mounted on the frame 100 above the three processing zones. The hangers in the immersion zone 110 are also connected to a lifting mechanism. The frame 100 suspends the tubing, and the lifting mechanism in the immersion zone 110 controls the tubing to move downwards into the coating solution. After immersion, the tubing is raised again. The entire system integrates the three processing steps of coating, enabling the complete coating process for conduits within the system, thus improving processing efficiency.

[0022] The soaking zone 110 is equipped with a paint container 200, and at least one stirring rod 210 is installed inside the paint container 200, located at the bottom of the paint container 200. The drying zone 120 is equipped with a recovery container 300, and a return pipe 310 is installed between the recovery container 300 and the paint container 200. The curing zone 130 is equipped with several evenly arranged UV lamps 400, located on the side of the frame 100. The pipe is first soaked and coated in the paint container 200 in the soaking zone 110, and then the pipe is moved to the drying zone 120 to dry the paint, wherein the recovery container 300 can collect the paint and transfer it back to the paint container 200. Finally, the dried pipe is moved to the curing zone 130, and the UV lamps are turned on to cure the paint with UV irradiation.

[0023] The stirring rod 210 inside the paint container 200 agitates the paint, promoting its flow, accelerating the elimination of air bubbles, and preventing stratification and sedimentation. Specifically, the stirring rod 210's placement at the bottom accelerates the movement of paint deposited at the bottom. Furthermore, agitating the paint at the bottom prevents excessive changes in the liquid level and reduces the amount of gas entering the paint solution during agitation, thus minimizing bubble formation. (See attached diagram.) Figure 1 In this embodiment, three stirring rods 210 are provided. Depending on the actual container size, the number of stirring rods 210 can be one, two, or four, etc. The stirring rods 210 are evenly spaced inside the paint container 200. To improve stirring efficiency, refer to the attached... Figure 3The stirring rod 210 is horizontally positioned inside the paint container 200. The stirring rod 210 is also equipped with spiral blades 220. The spiral blades 220 can fully contact the paint, improving stirring efficiency. The horizontal positioning drives the solution to move up and down, ensuring thorough stirring of the deposited paint while preventing excessive surface agitation and thus avoiding gas ingress. The stirring rod 210 reduces problems and defects in paint coating and improves the efficiency of paint processing.

[0024] During the entire production process, air bubbles are most easily introduced when the paint is poured into the paint container 200 and during paint addition. To avoid air bubble formation, a liquid inlet 230 is provided on the paint container 200, and the liquid inlet 230 is inclined and positioned on the side of the paint container 200. Paint is added into the paint container 200 through the liquid inlet 230, allowing for the addition of paint or solvent at any time. The inclined liquid inlet 230 causes the added liquid to be poured into the container along the inner wall, reducing the impact of liquid pouring and minimizing the amount of gas entering the solution during the addition process.

[0025] The frame 100 is also equipped with a transport mechanism, which includes a drive device and a conveying device. The conveying device is connected to the moving end of the drive device. The drive device drives the conveying device to move along the frame. The hangers are mounted on the conveying device, and a lifting mechanism is provided between each hanger and the conveying device.

[0026] A filter screen is installed inside the return pipe 310. The filter screen filters out impurities in the recycled paint, preventing impurities from sticking to the pipe body and reducing defective products in the paint processing.

[0027] The drying zone 120 is also equipped with a heating device, and a heat insulation device is provided between the drying zone 120 and the soaking zone 110. The heating device helps the paint dry faster and prevents impurities from adhering during the drying process, while the heat insulation device separates the paint container and prevents the paint inside the container from hardening.

[0028] A light-shielding sheet is provided between the curing zone 130 and the drying zone 120, and the light-shielding sheet is located on both sides of the frame 100. The light-shielding sheet reduces the amount of UV light entering the drying zone 120, preventing the pipes in the drying zone 120 from being cured by UV irradiation, so that the pipes can be fully leveled and dried, ensuring that the coating thickness of each pipe is consistent and improving the processing yield of the pipes.

[0029] The conveying device of the frame 100 includes a conveyor chain 140, and the driving device includes a drive motor and a drive wheel 150 connected to each other. The drive wheel 150 is connected to the conveyor chain 140. The frame 100 is also provided with a conveyor track 160, within which the conveyor chain 140 moves. The hanger includes a mounting plate 170, and the lifting device includes a lifting cylinder 180 mounted on the mounting plate 170. Multiple clamping elements 190 are provided at the bottom of the mounting plate 170. The output end of the drive motor is connected to the drive wheel 150. During processing, the drive motor starts, causing the drive wheel 150 to rotate, which in turn causes the conveyor chain 140 connected to the drive wheel 150 to rotate. The conveyor chain 140 moves along the conveyor track 150, moving the connected hanger between different processing areas. Multiple workpieces can be mounted at once using the clamping elements 190. The conveying device transports the workpieces along the conveyor track 160 for coating processing, making the entire processing process more automated and efficient.

[0030] The above is a detailed description of the preferred embodiments of the present utility model. The described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. Other embodiments that can be obtained are all within the protection scope of the present utility model.

Claims

1. A coating system for tubular instruments, characterized in that: include The frame (100) consists of a soaking area (110), a drying area (120) and a curing area (130) from front to back. Several hanging racks are provided on the frame (100) above the three processing areas. The hanging racks in the soaking area (110) are also connected to a lifting mechanism. The soaking zone (110) is provided with a paint container (200), and at least one stirring rod (210) is provided inside the paint container (200), the stirring rod (210) being located at the bottom of the paint container (200); The drying area (120) is equipped with a recycling container (300), and a return pipe (310) is provided between the recycling container (300) and the paint container (200). The curing zone (130) is provided with a number of uniformly arranged UV lamps (400), which are located on the side of the frame (100).

2. The coating system for tubular instruments according to claim 1, characterized in that: The paint container (200) is provided with a liquid inlet (230), which is inclinedly disposed on the side of the paint container (200).

3. The coating system for tubular instruments according to claim 1, characterized in that: The frame (100) is also provided with a transport mechanism, which includes a drive device and a conveying device. The conveying device is connected to the moving end of the drive device. The drive device drives the conveying device to move along the frame. The hangers are set on the conveying device, and each hanger is provided with a lifting mechanism between it and the conveying device.

4. The coating system for tubular instruments according to claim 1, characterized in that: A filter screen is installed inside the return pipe (310).

5. The coating system for tubular instruments according to claim 1, characterized in that: The drying area (120) is also equipped with a heating device, and a heat insulation device is provided between the drying area (120) and the soaking area (110).

6. The coating system for tubular instruments according to claim 1, characterized in that: A light-shielding sheet is provided between the curing zone (130) and the drying zone (120), and the light-shielding sheet is located on both sides of the frame (100).

7. The coating system for tubular instruments according to claim 1, characterized in that: The stirring rod (210) is arranged horizontally inside the paint container (200), and the stirring rod (210) is provided with spiral blades (220).

8. The coating system for tubular instruments according to claim 3, characterized in that: The conveying device of the frame (100) includes a conveying chain (140), the driving device includes a drive motor and a drive wheel (150) connected to each other, the drive wheel (150) is connected to the conveying chain (140), the frame (100) is also provided with a conveying track (160), the conveying chain (140) moves in the conveying track (160), the hanger includes a mounting plate (170), the lifting device includes a lifting cylinder (180) provided on the mounting plate (170), and a plurality of clamping parts (190) are provided at the bottom of the mounting plate (170).

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