A manufacturing process and equipment for infusion sets

Abstract

This application relates to the technical field of medical infusion sets, and in particular to a manufacturing process and equipment for infusion sets. The manufacturing process includes cutting and shaping a filter membrane using a cutting and shaping device and pressing it into a filter base. Then, the filter base and filter cover are molded together to obtain a drug solution filter. The process involves assembling a regulator, a steel puncture needle, an air filter, and the drug solution filter. After leak detection, sealing and packaging, sterilization, and random sampling for warehousing, this application utilizes a method where, after cutting the filter membrane sheet from the outer tube, the inner tube directly adsorbs and holds the filter membrane sheet and pushes it downwards into the filter base. This achieves a one-time transfer of the filter membrane sheet, avoiding positioning errors caused by secondary movement of the filter membrane sheet, improving the assembly accuracy of the filter membrane and the overall quality of the infusion set.

Description

Technical Field

[0001] This application relates to the technical field of medical infusion sets, and in particular to a manufacturing process and equipment for infusion sets. Background Technology

[0002] Infusion sets are widely used medical devices in clinical treatment. When administering medication, infusion sets need to be equipped with a drug filter to filter out tiny insoluble impurities and reduce infusion reactions during the infusion process. A drug filter generally consists of a filter cover and a filter base. During production, the cut filter membrane needs to be transferred to the filter base before the filter cover and filter base are bonded together. Current production processes and equipment involve first cutting filter membrane sheets of suitable shape and size from the filter membrane roll, and then using a robot to grip and feed these sheets into the filter base. This process is not only complex and difficult to maintain, but also prone to accumulating mechanical errors during transfer, leading to misalignment of the filter membrane sheets when they are placed into the filter base, resulting in defective products with leaks. Summary of the Invention

[0003] To improve the quality of finished infusion sets, this application provides a manufacturing process and equipment for infusion sets, employing the following technical solution:

[0004] A filter assembly device includes a filter membrane feeding device, a cutting and extrusion device, and a base fixing device. The filter membrane feeding device includes a filter membrane discharge roller, a filter membrane tensioning roller, and a filter membrane receiving roller arranged sequentially. The cutting and extrusion device is located between the filter membrane tensioning roller and the filter membrane receiving roller. The cutting and extrusion device includes multiple parallel-arranged punching outer tubes. A first connecting plate is connected to the upper part of each punching outer tube. The first connecting plate is connected to a punching cylinder. Each punching outer tube contains a pushing inner tube. A second pushing inner tube is connected to the upper part of the pushing inner tube. The second connecting plate is connected to a membrane pushing cylinder. The lower end of the membrane pushing inner tube is provided with a perforated plate. The membrane pushing inner tube is provided with a first air guide tube. The two ends of the first air guide tube are respectively connected to the membrane pushing inner tube and a negative pressure generator. A punching seat is provided below the punching outer tube. The punching seat is provided with punching holes with a diameter smaller than or equal to the diameter of the punching outer tube inner tube. The base fixing device is provided below the punching seat. The membrane pushing inner tube is used to push the filter membrane single piece punched out by the punching outer tube into the filter base groove provided by the base fixing device.

[0005] By adopting the above technical solution, after the outer tube punches out the filter membrane sheet, the inner tube directly adsorbs and clamps the filter membrane sheet and pushes it downward into the filter base, realizing a one-time filter membrane sheet transfer operation, avoiding positioning errors caused by secondary movement of the filter membrane sheet, and improving the filter membrane assembly accuracy and product quality.

[0006] Optionally, a chip collection hopper is provided between the punching seat and the base fixing device, and a first end of a reset rod is connected to one side of the chip collection hopper, and a second end of the reset rod is connected to a driving device.

[0007] By adopting the above technical solution, the chip collection hopper is used to collect the dust generated when the outer tube punches the filter membrane, so as to avoid the dust from contaminating the filter base. When the inner tube pushes the filter membrane into the filter base, the drive device controls the chip collection hopper to avoid it.

[0008] Optionally, the driving device includes a fixed block and a first linkage mechanism provided in the cutting and output device. The reset rod passes through the fixed block, and a first spring is sleeved on the reset rod between the fixed block and the chip collection hopper. The second end of the reset rod is connected to the film pushing cylinder through the first linkage mechanism. The first linkage mechanism includes a guide wheel assembly provided in the cutting and output device. A first linkage rope is wound on the guide wheel assembly, and the two ends of the first linkage rope are respectively connected to the second end of the reset rod and the movable end of the film pushing cylinder.

[0009] By adopting the above technical solution, the chip collection bucket moves synchronously with the inner tube of the pusher under the action of the fixed block, the first spring and the first linkage mechanism, so as to avoid the inner tube of the pusher in time, simplifying the action mechanism and reducing costs.

[0010] Optionally, the negative pressure generator is equipped with a self-resetting toggle switch for controlling the opening and closing of the negative pressure generator, and a second linkage mechanism is connected between the handle of the self-resetting toggle switch and the movable end of the push-film cylinder.

[0011] By adopting the above technical solution, when the moving end of the pusher cylinder is pressed down, that is, when the inner tube of the pusher is pressed down into the filter base, the second linkage mechanism controls the negative pressure generator to stop working. At this time, since the filter membrane itself has filter holes, the filter membrane detaches from the perforated plate of the inner tube of the pusher and falls into the filter base.

[0012] Optionally, the base fixing device is fixed to the moving part of the lead screw moving device, and a mold closing device is provided near the moving path of the moving part of the lead screw moving device.

[0013] By adopting the above technical solution, the base fixing device switches positions under the control of the lead screw moving device, and enters the mold closing position after the filter membrane is filled.

[0014] Optionally, the mold closing device is located above the base fixing device. The mold closing device includes a mold closing pressure plate, and a mold closing push cylinder is connected to the upper part of the mold closing pressure plate. The bottom surface of the mold closing pressure plate is provided with multiple upper cover fixing seats arranged in parallel, and an adhesive applicator is provided outside the upper cover fixing seats.

[0015] Reference Figure 8Traditionally, the filter cover and filter base are bonded together by applying adhesive to the outer circumference of the filter cover and pressing it into the filter base. However, this process is difficult to control the amount of adhesive applied. Insufficient adhesive can lead to gaps and air leakage in the filter, while excessive adhesive can cause overflow, leaving residue inside the filter and affecting product quality.

[0016] By adopting the above technical solution, the mold-closing device first presses the filter cover and filter base together, and then the gluing device applies adhesive to bond them, reducing the risk of adhesive overflowing into the filter and improving product quality. Furthermore, the equipment in this application is particularly suitable for the mold-closing and bonding of a filter cover with a cylindrical outer wall connected to a conical outer wall and a filter base with a conical inner wall.

[0017] Optionally, a connecting shaft is provided between the upper cover fixing seat and the mold clamping plate. Both ends of the connecting shaft have protruding rings on their sides. Both the upper cover fixing seat and the mold clamping plate have annular grooves for rotatably connecting with the protruding rings. Friction-reducing devices are provided between the upper and lower sides of the connecting shaft and the annular grooves. The gluing device includes an annular rotating frame. A first gear ring is provided on the outer circumference of the annular rotating frame. The mold clamping plate has a first motor. The output shaft of the first motor has a first gear that meshes with the first gear ring. A vertical guide tube is provided inside the connecting shaft in the middle of the annular rotating frame. The upper end of the guide tube is connected to a glue feeding device. The lower end of the guide tube has an L-shaped guide tube. The guide tube extends through the connecting shaft and connects to the inner side of the annular rotating frame. A glue-applying roller is provided at the glue outlet at the lower end of the guide tube.

[0018] By adopting the above technical solution, the connecting shaft enables the clamping plate to apply pressure to the upper cover fixing seat, so that the filter upper cover and filter base are fully pressed together. At the same time, the connecting shaft can rotate with the glue guide tube without affecting the rotation and glue application action of the glue application device.

[0019] Optionally, the guide tube is fitted with an air supply pipe, the upper end of which is connected to a blower, and the lower end of which is provided with an L-shaped air outlet bend, the air outlet bend passing through the connecting shaft, and the lower end of the air outlet bend having an air outlet.

[0020] By adopting the above technical solution, the air supply pipe rotates along with the glue application device, and the air outlet accelerates the curing of the glue application position.

[0021] Optionally, the connecting shaft is provided with a Z-shaped feeding rod, and the peripheral wall of the connecting shaft is provided with an elongated groove. The upper end of the feeding rod passes through the elongated groove and is connected to a pressure plate. The pressure plate is sleeved on the connecting shaft. A fork rod is abutted above the pressure plate. A third parallel connecting plate is connected to the upper part of the fork rod. The third parallel connecting plate is connected to the movable end of the feeding push cylinder provided on the mold closing pressure plate.

[0022] By adopting the above technical solution, the feeding rod rotates with the gluing device, the feeding cylinder pushes the third connecting plate, and the third connecting plate presses the feeding rod down. The feeding rod moves down in the long groove, and the lower end of the feeding rod presses out the filter cover in the upper cover fixing seat, thus realizing the feeding.

[0023] An infusion set manufacturing process using the above-mentioned filter assembly equipment includes the following steps:

[0024] S1. Plastic granules are added to an injection molding machine to prepare a filter cover with a cylindrical outer wall connected to a conical outer wall and a filter base with a conical inner wall. The filter base is placed in a base fixing device, and the filter membrane is cut and pressed into the filter base by a cutting and cutting device. Then, the base fixing device is moved below the mold closing device, which presses the filter cover into the filter base. Then, the glue applicator fills the gap between the pressed filter cover and the filter base with adhesive to bond and shape them, thus obtaining a liquid filter.

[0025] S2. Assemble the regulator, steel puncture needle, air filter, and drug filter;

[0026] S3. Perform final assembly of all components;

[0027] S4. Perform leak detection on the assembled infusion set;

[0028] S5. After the infusion sets that pass the leak detection are sealed, packaged, and sterilized, they are randomly sampled and put into storage.

[0029] By adopting the above technical solution, the installation position of the filter membrane of the drug solution filter is more accurate and stable, and the residue of adhesive material in the drug solution filter is less likely to occur, thereby improving the quality of the catheter.

[0030] In summary, this application includes at least one of the following beneficial technical effects: After the filter membrane sheet is punched out by the outer tube, the inner tube directly adsorbs and clamps the filter membrane sheet and pushes it downward into the filter base, realizing a one-time filter membrane sheet transfer operation, avoiding positioning errors caused by secondary movement of the filter membrane sheet, and improving the filter membrane assembly accuracy and product quality. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of this application.

[0032] Figure 2 This is a schematic diagram of the cutting and output device of this application.

[0033] Figure 3 This is a schematic diagram of the internal structure of the cutting and output device of this application.

[0034] Figure 4 This is a schematic diagram of the punched outer tube structure of this application.

[0035] Figure 5 This is a schematic diagram of the mold closing device structure of this application.

[0036] Figure 6 This is a schematic diagram of the adhesive application structure of the mold closing device in this application.

[0037] Figure 7 This is a schematic diagram of the material feeding structure of the mold closing device in this application.

[0038] Figure 8 This is a schematic diagram of a traditional medicine filter structure.

[0039] Figure 9 This is a schematic diagram of the structure of the liquid filter in this application.

[0040] Explanation of reference numerals in the attached drawings: 1. Filter membrane feeding device; 11. Filter membrane discharge roller; 12. Filter membrane tensioning roller; 13. Filter membrane receiving roller; 2. Cutting and sheeting device; 21. First frame; 22. Punching cylinder; 221. First connecting plate; 23. Punching outer tube; 24. Membrane pushing inner tube; 241. Perforated plate; 25. Second connecting plate; 26. Membrane pushing cylinder; 27. First air guide pipe; 28. Negative pressure generator; 281. Self-resetting toggle switch; 29. ​​Second linkage mechanism; 20. Punching seat; 201. Punching hole; 3. Chip collection hopper; 31. Reset rod; 32. Fixing block; 33. First spring; 34. First linkage mechanism; 35. Guide wheel assembly; 36. First linkage rope; 4. Bottom 5. Screw moving device; 6. Mold closing device; 61. Second frame; 62. Mold closing pressure plate; 63. Mold closing push cylinder; 64. Top cover fixing seat; 65. Connecting shaft; 651. Convex ring; 66. Friction reduction device; 7. Gluing device; 71. Annular rotating frame; 711. First gear ring; 72. First motor; 721. First gear; 73. Glue guide tube; 731. Glue guide folding tube; 732. Gluing roller; 74. Air supply pipe; 741. Air outlet folding tube; 8. Material discharge rod; 81. Long groove; 82. Pressure plate; 83. Fork rod; 84. Third parallel connecting plate; 85. Material discharge push cylinder; 100. Filter top cover; 200. Filter base; 300. Filter membrane single piece. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0042] Reference Figure 1This application discloses a filter assembly device, including a filter membrane feeding device 1, a cutting and sheeting device 2, and a base fixing device 4. The filter membrane feeding device 1 includes a filter membrane discharge roller 11, a filter membrane tensioning roller 12, and a filter membrane receiving roller 13 arranged in sequence. Each roller includes a roller body and a roller shaft bracket supporting the roller body. The filter membrane receiving roller 13 is connected to a drive motor, which is used to drive the filter membrane receiving roller 13 to rotate so as to move the filter membrane.

[0043] Reference Figure 2 , Figure 4 A cutting and sheeting device 2 is provided between the filter membrane tensioning roller 12 and the filter membrane receiving roller 13. The cutting and sheeting device 2 includes a first frame 21, in which multiple parallel-arranged punching outer tubes 23 are provided. The upper part of the punching outer tubes 23 is connected to a first parallel connecting plate 221, which is connected to a punching cylinder 22. The punching cylinder 22 is fixed to the first frame 21. Each punching outer tube 23 is provided with a film pushing inner tube 24. The upper part of the film pushing inner tube 24 is connected to a second parallel connecting plate 25, which is connected to a film pushing cylinder 26. The film pushing cylinder 26 is fixed to the first frame 21. The lower end of the film pushing inner tube 24 is provided with a perforated plate 241. The film pushing inner tube 24 is provided with a first air guide pipe 27, the two ends of which are respectively connected to the film pushing inner tube 24 and a negative pressure generator 28. A punching seat 20 is provided below the punching outer tube 23, and the punching seat 20 is fixed to the first frame 21. The punching seat 20 is provided with a punching hole 201 with a diameter smaller than or equal to the inner diameter of the punching outer tube 23.

[0044] Reference Figure 3 Below the punching seat 20 is a chip collection hopper 3. A reset rod 31 is connected to one side of the chip collection hopper 3, and the second end of the reset rod 31 is connected to a drive device. The drive device includes a fixed block 32 and a first linkage mechanism 34 provided in the cutting and output device 2. The fixed block 32 is fixed to the first frame 21. The reset rod 31 passes through the fixed block 32. A first spring 33 is sleeved on the reset rod 31 between the fixed block 32 and the chip collection hopper 3. The second end of the reset rod 31 is connected to the film pushing cylinder 26 through the first linkage mechanism 34. The first linkage mechanism 34 includes a guide wheel assembly 35 provided in the cutting and output device 2. A first linkage rope 36 is wound on the guide wheel assembly 35. The two ends of the first linkage rope 36 are respectively connected to the second end of the reset rod 31 and the movable end of the film pushing cylinder 26.

[0045] Reference Figure 3A negative pressure generator 28 is mounted on the upper part of the first frame 21. The negative pressure generator 28 is equipped with a self-resetting toggle switch 281 for controlling the opening and closing of the negative pressure generator 28. A second linkage mechanism 29 is connected between the handle of the self-resetting toggle switch 281 and the movable end of the film-pushing cylinder 26. The second linkage mechanism 29 includes a second linkage rope and a guide wheel assembly. The guide wheel assembly is fixed to the first frame 21. The movable end of the film-pushing cylinder 26 moves downward, driving the second linkage rope to pull the handle of the self-resetting toggle switch 281, thereby controlling the self-resetting toggle switch 281 to open or close the negative pressure generator 28.

[0046] Reference Figure 1 , Figure 3 A base fixing device 4 is provided below the chip collection hopper 3. The inner membrane pusher tube 24 is used to push the filter membrane sheet 300 punched out by the outer punching tube 23 into the filter base 200 groove provided in the base fixing device 4. The base fixing device 4 is fixed to the moving part of the lead screw moving device 5. A mold closing device 6 is provided near the moving path of the moving part of the lead screw moving device 5. The lead screw moving device 5 controls the base fixing device 4 to move between the cutting and extruding device 2 and the mold closing device 6. When the base fixing device 4 moves away from under the mold closing device 6, the filter cover 100 is inserted from under the mold closing device 6. The front end of the lead screw moving device 5 is also provided with a filter base 200 feeding mechanism. The base fixing device 4 first fills the filter base 200 on the filter base 200 feeding mechanism, and then the lead screw moving device 5 pushes the base fixing device 4 to the bottom of the cutting and extruding device 2. After filling the filter membrane sheet 300, it is sent to the bottom of the mold closing device 6.

[0047] Reference Figure 5-6 The mold clamping device 6 is located above the base fixing device 4. The mold clamping device 6 includes a second frame 61 and a mold clamping pressure plate 62. A mold clamping push cylinder 63 is connected to the upper part of the mold clamping pressure plate 62 and is fixed to the second frame 61. The bottom surface of the mold clamping pressure plate 62 has multiple side-by-side upper cover fixing seats 64. The upper cover fixing seats 64 have filter upper cover 100 fixing grooves, and the filter upper cover 100 is interference-fitted with the inner hole of the fixing groove. The outer diameter of the upper cover fixing seat 64 is less than or equal to the outer diameter of the filter upper cover 100. The upper cover fixing seat 64 and the mold clamping plate 62 are connected by a connecting shaft 65. Both ends of the connecting shaft 65 have protruding rings 651 on their sides. Both the upper cover fixing seat 64 and the mold clamping plate 62 have annular grooves for rotatable connection with the protruding rings 651. Anti-friction devices 66 are provided between the upper and lower sides of the connecting shaft 65 and the annular grooves. The anti-friction devices 66 can be thrust bearings, anti-friction steel balls, or smooth protrusions on the contact surface to reduce friction. Because the glue application device 7 rotates at a low speed, the anti-friction device 66 reduces the torsional force on the mold clamping plate 62 and the upper cover fixing seat 64. This allows the connecting shaft 65 to rotate with the glue application device 7 when the mold clamping plate 62 presses down on the upper cover fixing seat 64 via the connecting shaft 65, while the upper cover fixing seat 64 does not rotate.

[0048] Reference Figure 6-7 The glue application device 7, located outside the upper cover fixing seat 64, includes an annular rotating frame 71. A first gear ring 711 is located on the outer periphery of the annular rotating frame 71. A first motor 72 is located on the mold clamping plate 62. The output shaft of the first motor 72 has a first gear 721 that meshes with the first gear ring 711. A vertical glue guide tube 73 is located inside the connecting rotating shaft 65 in the middle of the annular rotating frame 71. A rotating sealing ring is located at the upper end of the glue guide tube 73, and a glue feeding device is connected to the rotating sealing ring. An L-shaped glue guide bend 731 is located at the lower end of the glue guide tube 73. The glue guide bend 731 extends through the connecting rotating shaft 65 and connects to the inner side of the annular rotating frame 71. A glue application roller 732 is located at the glue outlet at the lower end of the glue guide bend 731. An air supply outer pipe 74 is fitted onto the glue guide tube 73. A sealing outer sleeve is located at the upper end of the air supply outer pipe 74. The lower bottom surface of the sealing outer sleeve is rotatably connected to the outer edge of the upper end of the air supply outer pipe 74. The sealing outer sleeve does not rotate and is connected to a blower. The lower end of the air supply pipe 74 is provided with an L-shaped air outlet bend 741, which extends through the connecting shaft 65 and has an air outlet at its lower end. A Z-shaped feed rod 8 is provided inside the connecting shaft 65. A long groove 81 is provided on the circumferential wall of the connecting shaft 65. The upper end of the feed rod 8 extends through the long groove 81 and connects to a pressure plate 82. The pressure plate 82 is fitted onto the connecting shaft 65. A fork 83 abuts against the upper part of the pressure plate 82. Anti-friction steel balls are provided on the bottom surface of the fork 83. A third connecting plate 84 is connected to the upper part of the fork 83. The third connecting plate 84 is connected to the movable end of the feed push cylinder 85 provided on the mold closing pressure plate 62.

[0049] An infusion set manufacturing process using the above-mentioned filter assembly equipment includes the following steps:

[0050] S1. Add the plastic granules to the injection molding machine, as per [reference]. Figure 9 A filter cover 100 with a cylindrical outer wall connected to a conical outer wall and a filter base 200 with a conical inner wall are prepared. The filter base 200 is placed in the base fixing device 4. The filter membrane is cut into shape by the punching outer tube 23 of the cutting device 2 and adsorbed onto the membrane pushing inner tube 24. The membrane pushing inner tube 24 is further pressed down to press the cut filter membrane single piece 300 directly into the filter base 200. Then, the base fixing device 4 is moved below the mold closing device 6. The mold closing device 6 presses the filter cover 100 into the filter base 200. Then, the adhesive application device 7 fills the gap on the upper side of the pressed filter cover 100 and the filter base 200 with adhesive to bond and shape them, thus obtaining a liquid filter.

[0051] S2. Assemble the regulator, steel puncture needle, air filter, and drug filter.

[0052] S3. Perform final assembly of all components.

[0053] S4. Perform leak detection on the assembled infusion set.

[0054] S5. After the infusion sets that pass the leak detection are sealed, packaged, and sterilized, they are randomly sampled and put into storage.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A filter assembly device, characterized in that: The system includes a filter membrane feeding device (1), a cutting and sheeting device (2), and a base fixing device (4). The filter membrane feeding device (1) includes a filter membrane discharge roller (11), a filter membrane tensioning roller (12), and a filter membrane receiving roller (13) arranged in sequence. The cutting and sheeting device (2) is located between the filter membrane tensioning roller (12) and the filter membrane receiving roller (13). The cutting and sheeting device (2) includes multiple parallel-arranged punching outer tubes (23). The upper part of the punching outer tube (23) is connected to a first parallel connecting plate (221). The first parallel connecting plate (221) is connected to a punching cylinder (22). Each punching outer tube (23) is provided with a film pushing inner tube (24). The upper part of the film pushing inner tube (24) is connected to a second parallel connecting plate (25). A plate (25) is connected to a membrane-pushing cylinder (26). The lower end of the membrane-pushing inner tube (24) is provided with a perforated plate (241). The membrane-pushing inner tube (24) is provided with a first air guide pipe (27). The two ends of the first air guide pipe (27) are respectively connected to the membrane-pushing inner tube (24) and a negative pressure generator (28). A punching seat (20) is provided below the punching outer tube (23). The punching seat (20) is provided with a punching hole (201) with a diameter greater than or equal to the inner diameter of the punching outer tube (23). The base fixing device (4) is provided below the punching seat (20). The membrane-pushing inner tube (24) is used to push the filter membrane single piece (300) punched out by the punching outer tube (23) into the filter base (200) groove provided by the base fixing device (4).

2. The filter assembly equipment according to claim 1, characterized in that: A chip collection hopper (3) is provided between the punching seat (20) and the base fixing device (4). A reset rod (31) is connected to the first end of one side of the chip collection hopper (3), and the second end of the reset rod (31) is connected to the driving device.

3. The filter assembly equipment according to claim 2, characterized in that: The driving device includes a fixed block (32) and a first linkage mechanism (34) provided in the cutting and output device (2). The reset rod (31) passes through the fixed block (32). A first spring (33) is sleeved on the reset rod (31) between the fixed block (32) and the chip collection hopper (3). The second end of the reset rod (31) is connected to the film pushing cylinder (26) through the first linkage mechanism (34). The first linkage mechanism (34) includes a guide wheel assembly (35) provided in the cutting and output device (2). A first linkage rope (36) is wound on the guide wheel assembly (35). The two ends of the first linkage rope (36) are respectively connected to the second end of the reset rod (31) and the movable end of the film pushing cylinder (26).

4. The filter assembly equipment according to claim 1, characterized in that: The negative pressure generator (28) is equipped with a self-resetting toggle switch (281) for controlling the opening and closing of the negative pressure generator (28). A second linkage mechanism (29) is connected between the handle of the self-resetting toggle switch (281) and the movable end of the push-film cylinder (26).

5. The filter assembly equipment according to claim 1, characterized in that: The base fixing device (4) is fixed to the moving part of the lead screw moving device (5), and a mold closing device (6) is provided near the moving path of the moving part of the lead screw moving device (5).

6. The filter assembly equipment according to claim 5, characterized in that: The mold closing device (6) is located above the base fixing device (4). The mold closing device (6) includes a mold closing pressure plate (62). A mold closing push cylinder (63) is connected to the upper part of the mold closing pressure plate (62). A plurality of upper cover fixing seats (64) are arranged in parallel on the bottom surface of the mold closing pressure plate (62). An adhesive applicator (7) is provided outside the upper cover fixing seat (64).

7. The filter assembly equipment according to claim 6, characterized in that: A connecting shaft (65) is provided between the upper cover fixing seat (64) and the mold clamping plate (62). Both ends of the connecting shaft (65) have protruding ring portions (651). Both the upper cover fixing seat (64) and the mold clamping plate (62) have annular grooves for rotatably connecting with the protruding ring portions (651). Friction-reducing devices (66) are provided between the upper and lower sides of the connecting shaft (65) and the annular grooves. The gluing device (7) includes an annular rotating frame (71). A first toothed ring (711) is provided on the outer periphery of the annular rotating frame (71), and the mold clamping plate (62) has a first toothed ring (711). A motor (72) is provided with a first gear (721) on the output shaft of the first motor (72) meshing with the first gear ring (711). A vertical guide tube (73) is provided in the connecting shaft (65) in the middle of the annular rotating frame (71). The upper end of the guide tube (73) is connected to a glue feeding device. The lower end of the guide tube (73) is provided with an L-shaped guide tube (731). The guide tube (731) passes through the connecting shaft (65) and connects to the inner side of the annular rotating frame (71). The lower end of the guide tube (731) has a glue outlet provided with a glue roller (732).

8. The filter assembly equipment according to claim 7, characterized in that: The guide tube (73) is fitted with an air supply pipe (74). The upper end of the air supply pipe (74) is connected to a blower. The lower end of the air supply pipe (74) is provided with an L-shaped air outlet bend (741). The air outlet bend (741) passes through the connecting shaft (65). The lower end of the air outlet bend (741) is provided with an air outlet.

9. The filter assembly equipment according to claim 8, characterized in that: The connecting shaft (65) is provided with a Z-shaped feeding rod (8). The connecting shaft (65) has a long groove (81) on its peripheral wall. The upper end of the feeding rod (8) passes through the long groove (81) and is connected to a pressure plate (82). The pressure plate (82) is sleeved on the connecting shaft (65). A fork rod (83) is abutted above the pressure plate (82). A third parallel connecting plate (84) is connected to the upper part of the fork rod (83). The third parallel connecting plate (84) is connected to the movable end of the feeding push cylinder (85) provided on the mold closing pressure plate (62).

10. A manufacturing process for an infusion set using the filter assembly equipment described in claim 1, characterized in that, Includes the following steps: S1. Plastic granules are added to an injection molding machine to prepare a filter cover with a cylindrical outer wall connected to a conical outer wall and a filter base with a conical inner wall. The filter base is placed in a base fixing device, and the filter membrane is cut and pressed into the filter base by a cutting and cutting device. Then, the base fixing device is moved below the mold closing device, which presses the filter cover into the filter base. Then, the glue applicator fills the gap between the pressed filter cover and the filter base with adhesive to bond and shape them, thus obtaining a liquid filter. S2. Assemble the regulator, steel puncture needle, air filter, and drug filter; S3. Perform final assembly of all components; S4. Perform leak detection on the assembled infusion set; S5. After the infusion sets that pass the leak detection are sealed, packaged, and sterilized, they are randomly sampled and put into storage.

Images