Gluing device

Abstract

The utility model discloses a gluing device which comprises a gluing box, a dispensing head, a glue box, a glue supply device, a glue inlet pipe and a glue return pipe, wherein the gluing box is used as a gluing operation area of the medical catheter; the dispensing head is arranged in front of the gluing box and provided with a gluing hole and a barrier strip perpendicular to the axis, and an annular gluing groove is formed in the inner wall of the gluing hole. The glue supply device automatically supplies glue, the glue dispensing head automatically dispenses glue, the linear sliding table is used for automatically inserting and taking out medical catheters, all functional parts are matched with one another, and full-automatic glue dispensing operation of the medical catheters is achieved, so that the glue dispensing efficiency is remarkably improved, the production efficiency is improved, the dependence of manual operation is reduced, and the production cost is reduced; in addition, the glue spreading device further has the advantages of being uniform in glue spreading, convenient in glue amount adjustment, environment-friendly and the like.

Description

Technical Field

[0001] This utility model relates to the field of medical device processing equipment technology, specifically to an adhesive coating device. Background Technology

[0002] In the medical field, medical catheters are widely used in various medical procedures, including infusion, drainage, anesthesia, and monitoring. To ensure the safety and effectiveness of these procedures, the effective connection and sealing performance between the catheter and its connector are crucial. Improper connections can lead to leaks, infections, or other complications, resulting in adverse consequences for the patient.

[0003] The connection processes for medical catheters and connectors are mainly divided into two types: welding (such as high-frequency pressure welding and ultrasonic welding) and adhesive bonding (such as using adhesives like cyclohexanone and tetrahydrofuran). Welding offers better connection strength and sealing, but it requires more sophisticated equipment, and the connection may experience thermal deformation or performance changes. Adhesive bonding offers relatively lower connection strength, but it is sufficient to meet the requirements of low-pressure and low-flow-rate media in the medical field. It also has advantages such as lower equipment requirements, simpler operation, compatibility with various materials, and less heat-affected zone, making it more widely used.

[0004] In adhesive bonding, dispensing is a crucial step, typically performed manually with the aid of tools. For example, adhesive can be applied to the outer wall of a rotating conduit using a syringe, or by rolling the conduit's outer wall onto a sponge soaked in adhesive. However, during manual operation, workers often have inconsistent control over the amount and location of adhesive application, potentially leading to uneven adhesive thickness. This can affect bond strength and sealing performance, resulting in inconsistent product quality and increased quality risks. Furthermore, manual dispensing requires significant manpower and time, resulting in low production efficiency and potentially creating capacity bottlenecks in large-scale production.

[0005] To overcome the above problems, there is an urgent need to develop a new type of automatic dispensing device for medical catheters. Utility Model Content

[0006] To improve the safety and reliability of medical catheter and connector connections, and to increase dispensing efficiency, this invention provides a dispensing device.

[0007] The technical solution adopted by this utility model is as follows: A glue-applying device, comprising: a glue-applying box, serving as the glue-applying area for medical catheters; a glue-dispensing head, arranged in front of the glue-applying box, the glue-dispensing head having a glue-applying hole and a stop bar perpendicular to the axis, the inner wall of the glue-applying hole being provided with an annular glue-applying groove; a glue tank, used for storing glue; a glue-supplying device, used for intermittently supplying glue to the annular glue-applying groove; a glue inlet pipe, used for connecting the glue-supplying device and the glue-dispensing head; and a glue return pipe, used for connecting the glue-dispensing head and the glue tank.

[0008] Preferably, the dispensing head includes an outer tube and an inner tube that fit together. The outer tube has a first end wall and a first tube wall, and the inner tube has a second end wall and a second tube wall. A first hole is provided at the center of the first end wall, and a second hole is provided at the center of the second end wall. The first hole and the second hole together form the glue application hole. A glue inlet hole communicating with the glue inlet tube is provided on the first tube wall. An annular cavity between the first tube wall and the second tube wall forms a glue tank. The gap between the first end wall and the second end wall forms the annular glue application groove. A radial cut in the second tube wall forms a glue return port communicating with the glue return tube. The glue inlet hole, the glue tank, the annular glue application groove, and the glue return port are sequentially connected to form a glue inlet-glue application-glue return channel.

[0009] Preferably, the return port is arranged in a vertically downward direction.

[0010] Preferably, the return port is located inside the glue application box, and the glue flows back to the glue application box through the return port. The glue application box is connected to the glue tank.

[0011] Preferably, the outer tube has a third hole that expands outward relative to the first hole, and the inner tube has a fourth hole that expands outward relative to the second hole.

[0012] Preferably, the stop bar is disposed within the fourth hole.

[0013] Preferably, the second pipe wall is provided with an annular piston portion near the tail end, and the outer peripheral wall of the annular piston portion is sealed and axially slidingly engaged with the inner peripheral wall of the first pipe wall; the tail end of the second pipe wall is provided with a flange ring portion.

[0014] Preferably, a plurality of the dispensing heads are arranged at equal intervals and at equal heights in front of the glue coating box.

[0015] Preferably, the glue supply device includes a glue-pressing piston and a glue-pressing cylinder, the glue-pressing piston is connected between the glue tank and the glue inlet pipe, and the glue-pressing cylinder drives the glue-pressing piston to draw in the glue.

[0016] Preferably, the glue applicator and the glue tank are integrally mounted on a horizontal linear slide, and slide back and forth linearly along the axis of the glue applicator hole as the linear slide moves.

[0017] This utility model has the following beneficial effects:

[0018] 1. High-efficiency dispensing: By designing a unique glue inlet-coating-return channel, medical catheters can be inserted into the glue coating hole to achieve high-efficiency dispensing, significantly improving dispensing efficiency, reducing reliance on manual operation, and accelerating production speed;

[0019] 2. Uniform adhesive application: The annular adhesive application groove ensures that the adhesive is evenly applied around the circumference of the medical catheter, avoiding the problem of uneven adhesive thickness caused by manual operation, improving connection strength and sealing performance, and enhancing the overall quality stability of the product.

[0020] 3. Adjustment function: The width of the annular glue application groove is adjustable, allowing for adjustments according to glue application needs to achieve the best glue application effect;

[0021] 4. Fully automated operation: The glue supply device automatically supplies glue, the glue dispensing head automatically applies glue, and the linear slide table realizes the automatic insertion and removal of medical catheters. It can achieve full automation, reduce labor costs, and is also environmentally friendly and efficient. Attached Figure Description

[0022] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0023] Figure 2 This is a schematic diagram of the assembly and disassembly of an embodiment of the present utility model (the linear slide is omitted).

[0024] Figure 3 This is a schematic diagram of the assembly of the dispensing head and the coating box in an embodiment of this utility model.

[0025] Figure 4 This is a three-dimensional schematic diagram of the dispensing head in an embodiment of this utility model.

[0026] Figure 5 This is a left-side view of the dispensing head in an embodiment of this utility model.

[0027] Figure 6 This is a cross-sectional view of the dispensing head in an embodiment of this utility model.

[0028] Figure 7 This is a schematic diagram illustrating the adhesive application principle of an embodiment of this utility model.

[0029] Medical catheter 1;

[0030] Glue application box 2;

[0031] Dispensing head 3, glue application hole 301, baffle 302, annular glue application groove 303, outer tube 304, inner tube 305, first end wall 306, first tube wall 307, second end wall 308, second tube wall 309, first hole 310, second hole 311, glue inlet hole 312, glue tank 313, glue return port 314, third hole 315, fourth hole 316, annular piston part 317, flange ring part 318;

[0032] Glue box 4;

[0033] Adhesive supply device 5, adhesive pressing piston 501, adhesive pressing cylinder 502;

[0034] Inlet hose 6;

[0035] Return hose 7;

[0036] Linear slide 8. Detailed Implementation

[0037] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0038] In the embodiments, such as Figures 1-3 The image shows a glue-applying device, comprising: a glue-applying box 2, serving as the glue-applying area for a medical catheter 1; a dispensing head 3, positioned in front of the glue-applying box 2, the dispensing head 3 having a glue-applying hole 301 and a baffle 302 perpendicular to the axis, the inner wall of the glue-applying hole 301 having an annular glue-applying groove 303; a glue tank 4 for storing glue; a glue supply device 5 for intermittently supplying glue to the annular glue-applying groove 303; a glue inlet pipe 6 for connecting the glue supply device 5 and the dispensing head 3; and a glue return pipe 7 for connecting the dispensing head 3 and the glue tank 4. In this embodiment, the dispensing head 3, with its annular glue-applying groove 303, can apply glue 360° from the outer circumference of the medical catheter 1, resulting in high glue-applying efficiency and avoiding uneven glue thickness issues caused by manual operation, thus improving connection strength and sealing performance. The baffle 302 in the dispensing head 3 positions the axial position of the medical catheter 1, thereby ensuring consistent glue application. The adhesive supply device 5 can be a piston pump, peristaltic pump, or pneumatic piston, etc., to provide periodic intermittent adhesive supply to the dispensing head 3, which facilitates automated control. This embodiment, through the cooperation of various functional components, achieves fully automated adhesive application for the medical catheter 1, significantly improving dispensing efficiency, reducing reliance on manual operation, increasing production efficiency, and lowering production costs.

[0039] In the embodiments, such as Figures 4-7As shown, the dispensing head 3 includes an outer tube 304 and an inner tube 305 that fit together. The outer tube 304 has a first end wall 306 and a first tube wall 307, and the inner tube 305 has a second end wall 308 and a second tube wall 309. A first hole 310 is provided at the center of the first end wall 306, and a second hole 311 is provided at the center of the second end wall 308. The first hole 310 and the second hole 311 together form a glue application hole 301. The first tube wall 307 is provided with a connection to the glue inlet tube 6. The glue inlet 312 is open, and the annular cavity between the first tube wall 307 and the second tube wall 309 forms a glue tank 313. The gap between the first end wall 306 and the second end wall 308 forms an annular glue coating groove 303. The radial cut of the second tube wall 309 forms a glue return port 314 that communicates with the glue return pipe 7. The glue inlet 312, glue tank 313, annular glue coating groove 303, and glue return port 314 are sequentially connected to form a glue inlet-glue coating-glue return channel. In this embodiment, a concentrically assembled outer tube 304 and inner tube 305 are used to form a double-layer sleeve structure. A complete glue inlet-glue storage-glue coating-glue return channel is formed inside the double-layer sleeve. The structure uses a double-layer sleeve to reduce the processing difficulty of the overall structure and also ensures the reliability of the dispensing head 3 itself. At the same time, the width of the annular glue coating groove 303 can be adjusted by the axial sliding of the outer tube 304 and the inner tube 305, that is, the adjustment of the width of the dispensing head 303. Figure 7 The distance D in the middle allows for adjustment of the amount of adhesive applied as needed to achieve the best adhesive effect and ensure the connection strength and sealing performance of the medical catheter 1.

[0040] In the embodiments, such as Figures 4-6 As shown, the glue return port 314 is arranged in a vertically downward direction. The glue return port 314 is located at a lower position to facilitate the backflow of glue, avoid glue blockage, and help maintain the smooth flow of glue channels.

[0041] In the embodiments, such as Figure 3 , Figure 7 As shown, the glue return port 314 is located inside the glue application box 2. Glue flows back to the glue application box 2 through the glue return port 314, and the glue application box 2 is connected to the glue tank 4. This structure effectively prevents glue leakage and ensures that excess glue flows smoothly back to the glue tank 4 for reuse, avoiding waste.

[0042] In the embodiments, such as Figure 6 As shown, the outer tube 304 has a third hole 315 that expands outward relative to the first hole 310, and the inner tube 305 has a fourth hole 316 that expands outward relative to the second hole 311. Both the third hole 315 and the fourth hole 316 are tapered holes, concentrically arranged with the first hole 310 and the second hole 311. The third hole 315 and the fourth hole 316 serve to assist the backflow of glue. The third hole 315 also assists in the insertion of the medical catheter 1. The baffle 302 is disposed in the fourth hole 316 and serves to axially position the medical catheter 1.

[0043] In the embodiments, such as Figure 6 As shown, the second pipe wall 309 has an annular piston portion 317 near its tail end. The outer peripheral wall of the annular piston portion 317 is sealed and axially slides against the inner peripheral wall of the first pipe wall 307. A flange ring portion 318 is provided at the tail end of the second pipe wall 309. The annular piston portion 317 and the first pipe wall 307 of the outer pipe 304 ensure good sealing performance, preventing glue leakage when the width of the annular adhesive groove 303 is adjusted by axial sliding between the outer pipe 304 and the inner pipe 305. The flange ring portion 305 provides an operating and fixing point for the axial sliding of the inner pipe 305, facilitating the adjustment and fixation of the inner pipe 305's position.

[0044] In the embodiments, such as Figure 2 , Figure 3 As shown, several dispensing heads 3 are arranged at equal intervals and heights in front of the dispensing box 2. This structure can simultaneously dispense adhesive onto multiple medical catheters 1, resulting in high production efficiency, good batch-to-batch product consistency, and suitability for mass production.

[0045] In the embodiments, such as Figure 2 As shown, the glue supply device 5 includes a pressure piston 501 and a pressure cylinder 502. The pressure piston 501 is connected between the glue tank 4 and the glue inlet pipe 6. The pressure cylinder 502 drives the pressure piston 501 to draw glue. One-way valves are provided between the glue tank 4 and the pressure piston 501, and between the pressure piston 501 and the glue inlet pipe 6. This embodiment uses a pneumatic piston type glue supply device 5, which is a simple and reliable glue supply device. By extending and retracting the pressure cylinder 502, the pressure piston 501 is driven to draw glue, thereby realizing the periodic intermittent glue supply to the dispensing head 3.

[0046] In the embodiments, such as Figure 1 As shown, the glue applicator 2 and the glue tank 4 are integrally mounted on a horizontal linear slide 8, and slide back and forth linearly along the axis of the glue applicator hole 301. During the glue applicator operation, the medical catheter 1 needs to be inserted into the glue applicator head 3. In this embodiment, the insertion and removal of the medical catheter 1 are achieved by keeping the medical catheter 1 stationary while the glue applicator head 3 moves. Its advantage lies in simplifying the movement trajectory of the medical catheter 1, thereby simplifying the delivery device of the medical catheter 1, and achieving the goal of simplifying the logistics transfer device of automated equipment and reducing equipment costs.

[0047] like Figure 7 As shown, the steps for applying adhesive to the outer wall of the medical catheter 1 using the device of this embodiment are as follows:

[0048] Step 1: Adjust the axial position of the inner tube 304 to the correct position and control the annular glue coating groove 303 to the specified width.

[0049] Step 2: Deliver the medical catheter 1 into position and align it with the glue application hole 301. The linear slide 8 drives the glue application box 2 and the glue tank 4 to move towards the linear slide 8, so that the medical catheter 1 is inserted into the glue application hole 2 until the front end of the medical catheter 1 touches the stop bar 302.

[0050] Step 3: Start the glue supply device 5. The pressure cylinder 502 extends and presses down the pressure piston 501, pushing the glue into the glue inlet pipe 6, and then along the glue inlet hole 3 of the glue dispensing head 2, the glue tank 4, and the annular glue coating groove 5. Figure 7 Apply glue in the direction of the solid arrow; excess glue is collected through the glue return port 6. Figure 7 The direction of the dashed arrow.

[0051] Step 4: The glue supply device 5 stops supplying glue, and the pressure cylinder 502 retracts to drive the pressure piston 501 to draw the glue from the glue tank 4 into the pressure piston 501 for the next glue application.

[0052] Step 5: The linear slide 8 moves the glue application box 2 and the glue tank 4 away from the linear slide 8, and the medical catheter 1 is pulled out from the glue application hole 2. The glue application operation is completed, and the medical catheter 1 is transferred to the next process.

[0053] During the above-mentioned glue application process, the glue supply device 5 automatically supplies glue, the glue dispensing head 3 automatically applies glue, and the linear slide 8 realizes the automatic insertion and removal of the medical catheter 1. The process can achieve full automation, reduce production costs, and has the characteristics of being environmentally friendly and efficient.

[0054] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A glue-applying device, characterized in that, include: The glue application box (2) serves as the glue application area for the medical catheter (1); A dispensing head (3) is arranged in front of the glue box (2). The dispensing head (3) has a glue hole (301) and a baffle (302) perpendicular to the axis. The inner wall of the glue hole (301) is provided with an annular glue groove (303). Glue box (4), used for storing glue; The glue supply device (5) provides glue intermittently during the cycle of the annular glue coating tank (303); The glue inlet tube (6) is used to connect the glue supply device (5) and the glue dispensing head (3). The return tube (7) is used to connect the dispensing head (3) and the glue tank (4).

2. The adhesive applicator according to claim 1, characterized in that, The dispensing head (3) includes an outer tube (304) and an inner tube (305) that are inserted and fitted together. The outer tube (304) has a first end wall (306) and a first tube wall (307), and the inner tube (305) has a second end wall (308) and a second tube wall (309). The first end wall (306) has a first hole (310) at its center, and the second end wall (308) has a second hole (311) at its center. The first hole (310) and the second hole (311) together form the adhesive application hole (301). The first pipe wall (307) is provided with a glue inlet hole (312) communicating with the glue inlet pipe (6). The annular cavity between the first pipe wall (307) and the second pipe wall (309) forms a glue tank (313). The gap between the first end wall (306) and the second end wall (308) forms the annular glue coating groove (303). The radial cut of the second pipe wall (309) forms a glue return port (314) communicating with the glue return pipe (7). The glue inlet hole (312), the glue tank (313), the annular glue coating groove (303) and the glue return port (314) are connected in sequence to form a glue inlet-glue coating-glue return channel.

3. The adhesive applicator according to claim 2, characterized in that, The return port (314) is arranged in a vertically downward direction.

4. The adhesive applicator according to claim 2 or 3, characterized in that, The return port (314) is located inside the glue box (2). Glue flows back to the glue box (2) through the return port (314). The glue box (2) is connected to the glue tank (4).

5. The adhesive applicator according to claim 2, characterized in that, The outer tube (304) has a third hole (315) that expands outward relative to the first hole (310), and the inner tube (305) has a fourth hole (316) that expands outward relative to the second hole (311).

6. The adhesive applicator according to claim 5, characterized in that, The stop bar (302) is disposed in the fourth hole (316).

7. The adhesive applicator according to claim 2, characterized in that, The second pipe wall (309) is provided with an annular piston part (317) near the tail end. The outer peripheral wall of the annular piston part (317) is sealed and axially slidingly engaged with the inner peripheral wall of the first pipe wall (307). The tail end of the second pipe wall (309) is provided with a flange ring part (318).

8. The adhesive applicator according to claim 1, characterized in that, Several dispensing heads (3) are arranged at equal intervals and heights in front of the glue box (2).

9. The adhesive applicator according to claim 1, characterized in that, The glue supply device (5) includes a glue-pressing piston (501) and a glue-pressing cylinder (502). The glue-pressing piston (501) is connected between the glue tank (4) and the glue inlet pipe (6). The glue-pressing cylinder (502) drives the glue-pressing piston (501) to draw in the glue.

10. The adhesive applicator according to claim 1, characterized in that, The glue application box (2) and the glue tank (4) are integrally installed on a horizontal linear slide (8), and slide back and forth in a straight line along the axis of the glue application hole (301) as the linear slide (8) moves.

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