A squeezing device for an aseptic tube sealing machine

Abstract

This application discloses a squeezing device for an aseptic tube sealing machine, belonging to the field of aseptic tube sealing machines. The squeezing device includes a touch-screen machine base, a resistance heating base fixedly mounted on the touch-screen machine base, and a squeezing mechanism disposed on the resistance heating base. The resistance heating base has a fixed heating terminal on its top and a movable heating terminal located above the fixed heating terminal. This squeezing device for aseptic tube sealing machines utilizes a sliding structure between the lifting frame and the gantry to ensure the movable heating terminal rises and falls vertically, replacing the lever squeezing method and preventing uneven pressure on the catheter. Simultaneously, through closed-loop control of the pressure sensor and drive assembly, quantitative control of the squeezing force is achieved, avoiding human error. This solves the technical problems of unstable squeezing force and uncontrollable sealing effect in traditional manual operation, significantly reducing the risk of catheter-related infections and material loss rate.

Description

Technical Field

[0001] This application relates to the field of aseptic tube sealing machine technology, specifically a compression device for an aseptic tube sealing machine. Background Technology

[0002] A sterile catheter sealing machine is a device specifically designed for the medical field. It is mainly used to sterile seal the ends of catheters (such as intravenous catheters, central venous catheters, dialysis catheters, etc.) to prevent leakage of fluid inside the catheter and intrusion of external contaminants, while maintaining the sterility of the catheter system and reducing the risk of infection for patients.

[0003] Traditional compression mechanisms in aseptic tube sealing machines often employ manual or simple mechanical structures, such as lever compression. The compression force and position depend on manual operation, making it difficult to guarantee the uniformity and consistency of each compression. Excessive compression may lead to poor sealing, liquid leakage, or bacterial invasion, while excessive compression may damage the catheter material, such as deforming or breaking silicone catheters, increasing the risk of infection or shortening the catheter's lifespan.

[0004] Therefore, this application provides a squeezing device for an aseptic tube sealing machine to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a squeezing device for an aseptic tube sealing machine, which aims to solve the problem mentioned in the background art that the traditional squeezing mechanism of existing aseptic tube sealing machines relies on manual operation of lever squeezing, which makes it difficult to control the squeezing force and easily damages the pipeline and causes leakage.

[0006] To achieve the above objectives, this application provides the following technical solution: a compression device for an aseptic tube sealing machine, comprising a touch-screen machine base, a resistance heating base fixedly mounted on the touch-screen machine base, and a compression mechanism disposed on the resistance heating base. The resistance heating base has a fixed heating terminal at its top and a movable heating terminal located above the fixed heating terminal. The compression mechanism includes a gantry fixedly connected to the resistance heating base, a lifting frame fixedly connected to the movable heating terminal and movable towards or away from the fixed heating terminal, a pressure sensor fixedly mounted at the center of the top of the lifting frame, a lifting screw fixedly connected to the top of the pressure sensor and passing through the gantry, and a drive assembly fixedly mounted on the gantry for driving the lifting screw to move longitudinally. In this way, the sliding structure of the lifting frame and the gantry ensures that the movable heating terminal moves vertically, replacing the lever compression method and preventing uneven pressure on the catheter. Simultaneously, through closed-loop control of the pressure sensor and the drive assembly, quantitative control of the compression force is achieved, avoiding human error. This solves the technical problems of unstable compression force and uncontrollable sealing effect in traditional manual operation, significantly reducing the risk of catheter-related infections and material loss rate.

[0007] Preferably, the drive assembly includes a drive box fixedly connected to the gantry, a nut worm gear rotatably connected inside the drive box and screwed to the lifting screw, a worm gear rotatably connected inside the drive box and meshing with the nut worm gear, and a motor fixedly installed on the side of the drive box with its output shaft connected to the worm gear.

[0008] Preferably, the output end of the pressure sensor and the input end of the motor are both connected to the touch screen console.

[0009] Preferably, a fixing frame is fixedly connected to the resistive heating base and fitted outside the fixed heating terminal. V-shaped support openings are symmetrically arranged on both sides of the fixing frame, and the bottom groove of the V-shaped support opening is lower than the surface of the fixed heating terminal.

[0010] Preferably, the lifting frame has symmetrical clearance grooves on both sides to allow space for the V-shaped support opening.

[0011] Preferably, the gantry has sliding rod legs on both sides that are fixedly connected to the resistive heating base, and the lifting frame is slidably connected to the corresponding sliding rod legs on both sides.

[0012] Preferably, the active heating terminal is connected to the resistive heating base via a spring wire.

[0013] This sterile tube sealing machine uses a compression device. The sliding structure of the lifting frame and the gantry ensures that the active heating terminal rises and falls vertically, replacing the lever compression method and preventing uneven pressure on the catheter. At the same time, through the closed-loop control of the pressure sensor and the drive component, the compression force is quantitatively controlled, avoiding human operation errors. This solves the technical problems of unstable compression force and uncontrollable sealing effect in traditional manual operation, and significantly reduces the risk of catheter-related infection and material loss rate.

[0014] The extrusion device of this aseptic tube sealing machine can achieve micron-level displacement adjustment of the lifting screw through stepper motor control. The self-locking function prevents the active heating terminal from rebounding due to the reaction force of the catheter during the extrusion process, ensuring sealing stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the extrusion device for an aseptic tube sealing machine;

[0016] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0017] Figure 3 This is a schematic diagram of the internal structure of the drive box of a compression device for a sterile tube sealing machine.

[0018] In the picture:

[0019] 1. Touch screen control unit;

[0020] 2. Resistance heating base; 21. Fixed heating terminal; 22. Movable heating terminal; 221. Spring wire; 23. Fixing frame; 231. V-shaped support;

[0021] 3. Extrusion mechanism; 31. Gantry; 311. Slide rod support leg; 32. Lifting frame; 321. Clearance groove; 33. Lifting screw; 34. Pressure sensor;

[0022] 35. Drive assembly; 351. Drive box; 352. Nut and worm gear; 353. Worm; 354. Motor. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] This embodiment provides a compression device for an aseptic tube sealing machine, such as... Figures 1-3 As shown, the extrusion device for the aseptic tube sealing machine includes a touch-screen machine base 1, a resistance heating base 2 fixedly mounted on the touch-screen machine base 1, and an extrusion mechanism 3 disposed on the resistance heating base 2. The resistance heating base 2 has a fixed heating terminal 21 at its top and a movable heating terminal 22 located above the fixed heating terminal 21. The extrusion mechanism 3 includes a gantry 31 fixedly connected to the resistance heating base 2, a lifting frame 32 fixedly connected to the movable heating terminal 22 and movable toward or away from the fixed heating terminal 21, a pressure sensor 34 fixedly mounted at the center of the top of the lifting frame 32, a lifting screw 33 fixedly connected to the top of the pressure sensor 34 and passing through the gantry 31, and a drive assembly 35 fixedly mounted on the gantry 31 for driving the lifting screw 33 to move longitudinally.

[0025] In use, the operator places the tubing between the fixed heating terminal 21 and the movable heating terminal 22, and sets the extrusion parameters, pressure threshold, heating temperature, etc., through the touch control panel 1. The drive assembly 35 drives the lifting screw 33 to move downward, which in turn moves the lifting frame 32 to bring the movable heating terminal 22 closer to the fixed heating terminal 21. The pressure sensor 34 monitors the extrusion pressure in real time. When the set threshold is reached, a signal is sent to the drive assembly 35 to stop moving. The resistance heating base 2 starts heating simultaneously to complete the aseptic sealing operation. Afterward, the drive assembly 35 drives the lifting screw 33 to move upward, which in turn moves the lifting frame 32 to move the movable heating terminal 22 away from the fixed heating terminal 21. Finally, the sealed tubing can be removed.

[0026] Specifically, the drive assembly 35 includes a drive box 351 fixedly connected to the gantry 31, a nut worm gear 352 rotatably connected inside the drive box 351 and screwed to the lifting screw 33, a worm 353 rotatably connected inside the drive box 351 and meshing with the nut worm gear 352, and a motor 354 fixedly installed on the side of the drive box 351 with its output shaft connected to the worm 353. The motor 354 drives the worm 353 to rotate, which in turn drives the nut worm gear 352 to rotate. The internal thread of the nut worm gear 352 meshes with the lifting screw 33, driving the lifting screw 33 to rise and fall vertically along the sliding support leg 311 of the gantry 31. The self-locking characteristic of the worm gear structure ensures that the lifting screw 33 will not slip due to external force after stopping. Through the stepping control of the motor 354, the micron-level displacement adjustment of the lifting screw 33 can be realized. The self-locking function prevents the active heating terminal 22 from rebounding due to the reaction force of the guide tube during the extrusion process, ensuring sealing stability.

[0027] Specifically, the output of the pressure sensor 34 and the input of the motor 354 are both connected to the touch screen machine 1. The pressure sensor 34 monitors the squeezing force of the lifting frame 32 on the guide tube in real time and transmits the data to the touch screen machine 1 in analog / digital signals. The touch screen machine 1 has a built-in PID algorithm that compares the set pressure threshold with the real-time pressure value and dynamically adjusts the speed or starts and stops of the motor 354.

[0028] Furthermore, a fixing frame 23 is fixedly connected to the resistive heating base 2 and is fitted outside the fixing heating terminal 21. V-shaped support openings 231 are symmetrically arranged on both sides of the fixing frame 23. The bottom groove of the V-shaped support opening 231 is lower than the surface of the fixing heating terminal 21. When the tube is placed, the V-shaped inclined surface automatically centers and positions itself, providing initial positioning for the tube.

[0029] It should be noted that the lifting frame 32 has symmetrical clearance grooves 321 on both sides to allow the V-shaped support opening 231 to make way; this avoids mechanical interference between the lifting frame 32 and the fixed frame 23.

[0030] Specifically, the gantry 31 has sliding rod legs 311 fixedly connected to the resistive heating base 2 on both sides, and the lifting frame 32 is slidably connected to the corresponding sliding rod legs 311 on both sides; the lifting frame 32 is restricted to move only in the vertical direction to prevent horizontal deviation, and the sliding connection reduces vibration transmission during equipment operation and improves the signal stability of the pressure sensor 34.

[0031] It should be noted that the movable heating terminal 22 is connected to the resistance heating base 2 via a spring wire 221; one end of the spring wire 221 is fixed to the resistance heating base 2, and the other end is connected to the movable heating terminal 22, which automatically extends and retracts as the movable heating terminal 22 rises and falls, maintaining electrical connection.

[0032] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. An extrusion device for aseptic tube sealing machine, comprising a touch machine table (1), a resistance heating base (2) fixedly installed on the touch machine table (1), and an extrusion mechanism (3) arranged on the resistance heating base (2), characterized in that: The top of the resistance heating base (2) has a fixed heating terminal (21) and a movable heating terminal (22) located above the fixed heating terminal (21). The extrusion mechanism (3) includes a gantry (31) fixedly connected to the resistance heating base (2), a lifting frame (32) fixedly connected to the movable heating terminal (22) and moving closer to or away from the fixed heating terminal (21), a pressure sensor (34) fixedly installed at the center of the top of the lifting frame (32), a lifting screw (33) fixedly connected to the top of the pressure sensor (34) and passing through the gantry (31), and a drive assembly (35) fixedly installed on the gantry (31) for driving the lifting screw (33) to move longitudinally.

2. The extrusion device for aseptic tube sealing machine according to claim 1, characterized in that: The drive assembly (35) includes a drive box (351) fixedly connected to the gantry (31), a nut worm gear (352) rotatably connected inside the drive box (351) and screwed to the lifting screw (33), a worm (353) rotatably connected inside the drive box (351) and meshing with the nut worm gear (352), and a motor (354) fixedly installed on the side of the drive box (351) and whose output shaft is connected to the worm (353).

3. The extrusion device for aseptic tube sealing machine according to claim 2, characterized in that: The output end of the pressure sensor (34) and the input end of the motor (354) are both connected to the touch screen console (1).

4. The extrusion device for aseptic tube sealing machine according to claim 3, characterized in that: The resistive heating base (2) is fixedly connected to a fixed frame (23) that is fitted outside the fixed heating terminal (21). The fixed frame (23) has V-shaped support openings (231) symmetrically arranged on both sides. The bottom groove of the V-shaped support opening (231) is lower than the surface of the fixed heating terminal (21).

5. The extrusion device for aseptic tube sealing machines according to claim 4, characterized in that: The lifting frame (32) has symmetrical relief grooves (321) on both sides for making way for the V-shaped support opening (231).

6. The extrusion device for aseptic tube sealing machines according to claim 5, characterized in that: The gantry (31) has sliding rod legs (311) on both sides that are fixedly connected to the resistive heating base (2), and the lifting frame (32) is slidably connected to the corresponding sliding rod legs (311) on both sides.

7. The extrusion device for aseptic tube sealing machines according to claim 6, characterized in that: The active heating terminal (22) is connected to the resistive heating base (2) via a spring wire (221).

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