Preparation device and preparation process of sterile packaging film for medical apparatus and instruments

Abstract

The sterile packaging film preparation device comprises a machine base, a cross plate and a mounting roller arranged on the cross plate, a winding drum cabin is arranged on the outer wall, located on one side of a pressing roller assembly, of the machine base, a traction cabin is arranged on the outer wall, located on the other side of the pressing roller assembly, of the machine base, and a first through hole and a second through hole are formed in the two sides of a machine frame; a first driving assembly for driving the winding drum which is not wound with the film to slide to the mounting roller from the first through hole is arranged in the winding drum cabin, and a second driving assembly for pulling the mounting roller is arranged in the traction cabin; a plurality of roller components are arranged on the peripheral side of the mounting roller, a positioning assembly is arranged in the mounting roller and used for limiting rotation of the roller components after the winding drum movably sleeves the required position of the mounting roller, and a reset assembly is further arranged in the mounting roller and used for enabling the roller components to recover the initial rotating state. The winding drum can be quickly dismounted from the mounting roller, and a new winding drum can be quickly mounted on the mounting roller.

Description

Technical Field

[0001] The invention relates to the field of packaging film processing, in particular to a sterile packaging film preparation device for medical devices and a preparation process thereof. Background Art

[0002] Medical grade polyvinyl chloride film is generally a multi-layer co-extruded film with good softness, good toughness and elasticity, and can fit the shape of medical devices well.

[0003] When the existing film-making winding equipment is winding the film, the roll is installed on the winding equipment through the installation roller, and the film is wound on the roll. When the surface of the roll is completely wound, it is necessary to remove the installation roller and release the air pressure inside the installation roller so that the roll can be removed from the roller shaft, and then a new set of rolls is put on the installation roller again, and the air pressure is injected again to press the roll on the installation roller. Since the roll needs to be manually disassembled and replaced, the replacement process wastes manpower and time, resulting in a decrease in the film winding efficiency. Summary of the invention

[0004] The object of the present invention is to provide a device for preparing a sterile packaging film for medical devices to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for preparing aseptic packaging film for medical devices, comprising a machine base, a pressure wheel group slidably arranged on the front side of the machine base, and an ultrasonic cutting knife slidably arranged on the machine base from left to right, a cross plate is rotatably arranged on the inner side of the machine base, the cross plates are symmetrically arranged on both sides of the machine base, and a film winding roller assembly is arranged between the cross plates on both sides, the film winding roller assembly comprises a pressure roller and an installation roller, the machine base is provided with a roll cabin on the outer wall on one side of the pressure roller assembly, and a traction cabin is provided on the outer wall on the other side of the pressure roller assembly, and the rotation of the cross plate can drive the installation roller to move between the winding position and the unwinding position Switching, the frame is provided with a first through hole between the reel cabin and the pressure roller assembly, the first through hole and a group of mounting rollers are in a coaxial position when the mounting roller is in the unloading position, the frame is provided with a second through hole between the pressure roller assembly and the traction cabin, the second through hole is coaxially arranged with the first through hole, a first driving assembly for driving the reel of unwound film to slide from the first through hole to the mounting roller is provided in the reel cabin, an expanded hole is provided at the cross plate near one side of the reel cabin for the rotating connection of the mounting roller, a rotating connecting piece for the mounting roller for limiting the position is provided inside the expanded hole, and a second driving assembly for pulling the mounting roller is provided in the traction cabin; The outer peripheral side of the installation roller is provided with multiple groups of roller components, and the installation roller is provided with a positioning component for limiting the rotation of the roller component after the reel is moved and sleeved at the required position of the installation roller. The installation roller is also provided with a reset component for restoring the roller component to its initial state of rotation.

[0006] Preferably, the mounting roller is rotatably arranged on a cross plate, a tooth portion is provided on the side of the circumferential outer wall of the mounting roller close to the second through hole, a third motor is provided on the cross plate close to the second through hole, and the output end of the third motor extends into the cross plate and is connected to a gear disk meshing with the tooth portion.

[0007] Preferably, a material storage chamber for placing the reel is provided in the reel cabin, the first driving component includes a first motor, a first screw and a push plate, a driving chamber is provided at the bottom of the material storage chamber, a partition is provided between the material storage chamber and the driving chamber, the first motor is arranged in the driving chamber and the output end is fixedly connected to the first screw, a linkage plate is threadedly sleeved on the first screw, the push plate is arranged at the bottom of the material storage chamber and a connecting rod is connected to the linkage plate, the partition is provided with a rod groove for the connecting rod to slide horizontally, and a partition component is provided on one side of the reel cabin located at the bottom of the material storage chamber.

[0008] Preferably, the partition assembly includes a U-shaped plate and a first spring, and a slide groove for horizontal sliding of the U-shaped plate is provided on the inner wall of the storage chamber, one end of the first spring is fixed on the inner wall of the slide groove away from the frame, and the other side is against the U-shaped plate, and the first through hole opening is located at the bottom of the storage bin.

[0009] Preferably, the second driving assembly includes a second motor, a second screw rod, a connecting plate and an electromagnet. A connecting plate groove for horizontal sliding of the connecting plate is provided in the traction cabin. The second motor is fixed in the connecting plate groove and the output end is fixedly connected to the second screw rod. The second screw rod passes through the connecting plate and forms a threaded connection. The electromagnet is fixed on the connecting plate and is opposite to the second through hole and is used to form a connection with the mounting roller.

[0010] Preferably, the roller component includes a pressure wheel portion and a meshing portion, the roller component is axially provided with a rotating shaft, the outer side of the rotating shaft is provided with a one-way bearing, the outer ring of the one-way bearing is fixed in the mounting roller, and the inner ring is sleeved on the rotating shaft, the roller component is rotationally connected with the mounting roller through the one-way bearing, the positioning assembly includes a meshing rod arranged in the mounting roller, the meshing rod is provided with a plurality of groups corresponding to the number of roller components arranged on the same circumferential section of the mounting roller, the meshing rod is axially slidably arranged in the mounting roller along the mounting roller, each group of meshing rods is arranged in the mounting roller corresponding to a plurality of groups of roller components in the same axial direction of the mounting roller, the meshing rod is provided with local tooth units meshed with the plurality of meshing portions, the local tooth unit closest to the second through hole is meshed with the meshing portion closest to the second through hole in an initial state, and the other local tooth units are not meshed with the meshing portion in an initial state.

[0011] Preferably, the reset assembly includes side plates, a second spring, a screw and a hinged rod, the side plates are symmetrically arranged on both sides of the axial direction of the mounting roller and are located inside the mounting roller, the screw passes through the side plates on both sides and forms a rotating connection, the threaded sleeves on both sides of the screw are provided with shaft sleeves, the hinged rod is symmetrically arranged on both sides of each group of meshing rods and one end away from the meshing rods is respectively hinged to the shaft sleeves corresponding to the two sides, a hollow groove is arranged in the middle of the mounting roller, and plate grooves for sliding side plates are arranged at both ends of the hollow groove, the second spring is arranged in a side plate groove close to the first through hole and is used to resist the side plate, and the frame is also provided with a linkage assembly for driving the screw to rotate.

[0012] Preferably, the linkage assembly includes a linkage rod and a linkage shaft, the linkage shaft is rotatably arranged on a side of the installation roller close to the second through hole, one end of the linkage rod is fixedly connected to the screw, and the other end is inserted into the linkage shaft to form a sliding connection, the end of the electromagnet close to the screw is provided with a socket for inserting the linkage shaft, the outer shaft side of the linkage shaft is provided with a spiral groove, the inside of the socket is provided with a guide shaft matching the spiral groove, the side of the installation roller close to the second through hole is provided with an entrance groove for inserting the power supply magnet, the inner wall of the entrance groove is provided with a magnetic attraction portion that is magnetically attracted to the electromagnet, and a torsion spring is connected between the linkage shaft and the installation roller.

[0013] Preferably, a protrusion is provided on the side of the connecting plate opposite to the second through hole, a protrusion is provided on the protrusion, one end of the protrusion is inserted into the electromagnet, a limit plate is provided on the end of the protrusion inserted into the electromagnet, and a limit groove is provided in the electromagnet for the limit plate to slide horizontally.

[0014] A process for preparing a packaging film from a sterile packaging film for medical devices comprises the following steps: Step 1: Place the corona layer, the middle layer and the easy-peel layer in a three-layer co-extrusion cast film machine to obtain a three-layer composite film material; Step 2: The three-layer composite film material is subjected to thickness measurement, corona treatment, winding, plasticization, and slitting to obtain a packaging film for medical packaging.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By providing a reel compartment, reels can be stored, and a new set of reels can be pushed onto the mounting roller after the reels on the mounting roller are taken off by a first drive assembly in the reel compartment; A traction cabin is arranged on one side of the frame, and a second driving assembly is arranged in the traction cabin, so that the installation roller can be pulled out from the second through hole after the roll on the installation roller is wound with the packaging film, so that the roll wound with the packaging film falls and is transmitted to the collection position; A roller component is arranged on the installation roller, an engaging rod is arranged inside the installation roller, and a local gear unit engaged with the roller component is arranged on the engaging rod. When the reel is slidably mounted on the installation roller, the reel drives the roller component to rotate, and after the engaging rod is engaged with the gear component through the local gear unit and moves to a position where it cannot move, the roller component cannot continue to move, thereby limiting the reel to a position where the packaging film needs to be wound; When it is necessary to pull the installation roller into the traction cabin through the traction assembly, the screw can be driven to rotate through the cooperation of the guide shaft on the electromagnet and the spiral groove on the linkage shaft, so that the multiple sets of engaging rods move along the radial inner side of the installation roller, thereby disengaging the local tooth unit from the meshing with the roller component, making it easier to pull the installation roller out of the reel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the process flow of the packaging film of the present invention; Figure 2 It is a schematic diagram of the overall structure of the device of the present invention; Figure 3 is a schematic diagram of the present invention highlighting the drum cabin and the traction cabin; Figure 4 yes Figure 3 A magnified schematic diagram of part A; Figure 5 yes Figure 3 A magnified schematic diagram of part B; Figure 6 is a cross-sectional schematic diagram highlighting the electromagnet of the present invention; Figure 7 is a schematic cross-sectional view highlighting the interior of the mounting roller of the present invention; Figure 8 yes Figure 7 A magnified schematic diagram of part C; Fig. 9 yes Figure 7 The enlarged schematic diagram of the D part; Fig.10 It is a structural schematic diagram of the highlight roller component of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Machine base; 2. Pressing wheel group; 3. Ultrasonic cutting knife; 4. Cross plate; 5. Main rod; 6. Mounting roller; 7. Pressing roller; 8. Reel cabin; 9. Traction cabin; 10. Second through hole; 11. Tooth; 12. Third motor; 13. Tooth plate; 14. Rotating hole; 15. First through hole; 16. Expanding hole; 17. Tension spring; 18. Positioning plate; 19. Positioning slot plate; 20. Inclined surface; 21. Positioning slot; 22. Material storage chamber; 23. First driving assembly; 231. First motor; 232. First screw rod; 233. Push plate; 24. Driving chamber; 25. Partition plate; 26. Connecting rod; 27. Rod slot; 28. U-shaped plate; 29. ​​Slideway; 30. First spring; 31. Second driving assembly; 311 , the second motor; 312, the second screw rod; 313, the connecting plate; 314, the electromagnet; 32, the connecting plate groove; 33, the roller component; 331, the pressure wheel part; 332, the meshing part; 34, the rotating shaft; 35, the one-way bearing; 36, the meshing rod; 37, the local gear unit; 38, the side plate; 39, the second spring; 40, the screw rod; 41, the hinge rod; 42, the sleeve; 43, the hollow groove; 44, the plate groove; 45, the linkage rod; 46, the linkage shaft; 47, the socket; 48, the spiral groove; 49, the guide shaft; 50, the entrance groove; 51, the magnetic suction part; 52, the torsion spring; 53, the linkage rod groove; 54, the protrusion; 55, the protruding rod; 56, the limit plate; 57, the limit groove; 58, the third spring; 59, the linkage plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-10 , the present invention provides a technical solution: See also Figure 2A device for preparing aseptic packaging film for medical devices comprises a machine base 1, a pressing wheel group 2 slidably arranged on the front side of the machine base 1, and an ultrasonic cutting knife 3 slidably arranged on the machine base 1. A cross plate 4 is rotatably arranged inside the machine base 1. A main rod 5 is arranged in the middle of the cross plate 4. The main rod 5 is rotatably arranged on the frame. The rotation of the main rod 5 can drive the cross plate 4 to rotate. The rotation method of the main rod 5 is the existing technology. The cross plates 4 are symmetrically arranged on both sides of the machine base 1 and a film winding roller assembly is arranged between the cross plates 4 on both sides. The film winding roller assembly comprises a pressing roller 7 and a The mounting rollers 6 are symmetrically arranged with two groups of mounting rollers 6 and two groups of pressing rollers 7 on the cross plate 4. The pressing rollers 7 are used to provide a pressing force on the packaging film during the process of the packaging film being wound on the reel. The pressing rollers 7 are arranged adjacent to the mounting rollers 6. When one group of mounting rollers 6 has finished winding the packaging film, the ultrasonic cutting knife 3 will perform a transverse movement to cut the packaging film, and then move the pressing wheel group 2 toward one side of the mounting rollers 6. Under the fitting rotation of the pressing wheel group 2 and the mounting rollers 6, the packaging film will be completely fitted on the reel. The above is the prior art, so it will not be elaborated.

[0021] See also Figure 2 , 3 , a reel cabin 8 is provided on the outer wall of the machine base 1 on one side of the pressure roller 7 assembly, and a traction cabin 9 is provided on the outer wall on the other side of the pressure roller 7 assembly. The rotation of the cross plate 4 can drive the installation roller 6 to switch between the winding position and the unwinding position, wherein the installation roller 6 is located at the winding position to rotate and wind the installation film in the following manner: the installation roller 6 is rotatably arranged on the cross plate 4, and a tooth portion 11 is provided on the side of the circumferential outer wall of the installation roller 6 close to the second through hole 10, and a third motor 12 is provided on the cross plate 4 close to the second through hole 10. The output end of the third motor 12 extends into the cross plate 4 and is connected to a toothed disc 13 meshing with the toothed disc 11. It should be noted that: a rotating area for the toothed disc 13 and the toothed disc 11 to rotate is provided on the end face of the cross plate 4 close to the second through hole 10, and a rotating hole 14 for the installation roller 6 to rotate is provided on the side of the rotating area away from the second through hole 10. The inner wall of the rotating hole 14 is fitted with the outer wall of the installation roller 6, and the installation roller 6 can also slide axially in the rotating hole 14.

[0022] See also Figure 2 , 38. A frame is provided with a first through hole 15 between the roll cabin 8 and the pressure roller 7 assembly. When the mounting roller 6 is located at the unloading position, the first through hole 15 is in a coaxial position with a group of mounting rollers 6. A first driving assembly 23 is provided in the roll cabin 8 for driving the roll of the unwound film to slide from the first through hole 15 to the mounting roller 6. A cross plate 4 on one side of the roll cabin 8 is provided with an expansion hole 16 at the rotation connection of the mounting roller 6. The inner diameter of the expansion hole 16 is the same as the outer diameter of the roll, allowing the roll to be removed from the roll cabin 8 and pass through the expansion hole 16, and then slide onto the mounting roller 6. A rotating connection member for limiting the mounting roller 6 is provided inside the expansion hole 16, and the rotating connection member includes a tensioning spring 17 and positioning plates 18, multiple groups of positioning plates 18 are arranged along the circumferential side of the expansion hole 16, and positioning plate 18 grooves for the positioning plates 18 to slide radially along the expansion hole 16 are provided on the circumferential inner wall of the expansion hole 16, and positioning grooves 21 for one end of the positioning plate 18 to be inserted into are provided on the circumferential outer wall of the installation roller 6 located at the expansion hole 16, and inclined surfaces 20 are provided on both sides of one end of the positioning plate 18 inserted into the positioning groove 21, and the reel can be abutted against the inclined surfaces 20 to make the positioning plate 18 slide into the positioning plate 18 groove and thus slide onto the installation roller 6. When the installation roller 6 is winding the packaging film, the positioning plate 18 inserted into the positioning groove 21 can also limit the installation roller 6 to prevent the installation roller 6 from axial sliding.

[0023] See also Figure 2 , 3 A storage chamber 22 for placing a reel is provided in the reel cabin 8, and the first driving assembly 23 includes a first motor 231, a first screw rod 232 and a push plate 233. A driving chamber 24 is provided at the bottom of the storage chamber 22, and a partition 25 is provided between the storage chamber 22 and the driving chamber 24. The reel located at the bottom of the storage chamber 22 contacts the partition 25 and is coaxially opposite to the first through hole 15. The first motor 231 is arranged in the driving chamber 24 and the output end is fixedly connected to the first screw rod 232. A linkage plate 59 is threadedly sleeved on the first screw rod 232. The push plate 233 is arranged at the bottom of the storage chamber 22 and a connecting rod 26 is connected between the linkage plate 59. The partition 25 is provided with a rod groove 27 for the connecting rod 26 to slide horizontally. The first motor 231 drives the first screw rod 232 to rotate and moves the push plate 233 toward one side of the first through hole 15, so as to push the reel out of the storage chamber 22 to the mounting roller 6.

[0024] See also Figure 2 , 3When the push plate 233 pushes the reel out of the material storage chamber 22 and then slides back, the reel will not fall and interfere with the push plate 233, a partition assembly is provided on one side of the reel compartment 8 at the bottom of the material storage chamber 22, and the partition assembly includes a U-shaped plate 28 and a first spring 30. A slide groove 29 is provided on the inner wall of the material storage chamber 22 for the U-shaped plate 28 to slide horizontally. One end of the first spring 30 is fixed to the inner wall of the slide groove 29 on the side away from the frame, and the other side is against the U-shaped plate 28. When the push plate 233 pushes a group of reels out of the material storage chamber 22, the upper side of the U-shaped plate 28 will pop out and resist the reel on the upper side under the action of the first spring 30. After the push plate 233 pushes the reel to the outside of the material storage chamber 22 and returns to its initial position, the push plate 233 will be against the lower side of the U-shaped plate 28 and push the U-shaped plate 28 into the slide groove 29, so that a group of reels fall to the side of the push plate 233.

[0025] See also Figure 3 A second through hole 10 is provided on the frame between the pressure roller 7 assembly and the traction cabin 9. The second through hole 10 is coaxially arranged with the first through hole 15. A second driving assembly 31 for traction of the installation roller 6 is provided in the traction cabin 9. After the roll is wound with the packaging film, the second driving assembly 31 pulls the installation roller 6 into the traction cabin 9, so that the roll is separated from the installation roller 6 and falls. It should be noted that a collection box (located below the installation roller 6 at the unloading position) can be provided on the frame below the unloading position of the installation roller 6, so that the roll wound with the packaging film can fall into the collection box after being separated from the installation roller 6.

[0026] See also Figure 3 , 5 The second driving assembly 31 includes a second motor 311, a second screw rod 312, a connecting plate 313 and an electromagnet 314. A connecting plate groove 32 for horizontal sliding of the connecting plate 313 is provided in the traction cabin 9. The second motor 311 is fixed in the connecting plate groove 32 and the output end is fixedly connected to the second screw rod 312. The second screw rod 312 penetrates the connecting plate 313 and forms a threaded connection. The electromagnet 314 is fixed on the connecting plate 313 and is opposite to the second through hole 10 and is used to form a connection with the installation roller 6. When it is necessary to pull the installation roller 6 into the traction cabin 9, the electromagnet 314 is powered on, the electromagnet 314 will absorb the installation roller 6, and then the second motor 311 drives the second screw rod 312 to rotate, so that the connecting plate moves toward the side away from the second through hole 10, so that the installation roller 6 can be pulled into the traction cabin 9. After the installation roller 6 is pulled into the traction cabin 9, the reel on the installation roller 6 will abut against the inner wall of the frame and fall off the installation roller 6.

[0027] See also Figure 2 , 10A plurality of roller components 33 are provided on the outer peripheral side of the mounting roller 6. The roller components 33 can rotate in the initial state. The inner wall of the reel contacts the roller component 33 to reduce the friction of sliding on the mounting roller 6. A positioning component is provided inside the mounting roller 6 to limit the rotation of the roller component after the reel is moved and sleeved at the required position of the mounting roller 6. A reset component is also provided inside the mounting roller 6 to restore the roller component to its initial state of rotation.

[0028] See also Figure 3 , 7 -10, the roller component 33 includes a pressure wheel portion 331 and an engaging portion 332, the roller component 33 is axially provided with a rotating shaft 34, the rotating shaft 34 is sleeved with a one-way bearing 35 on the outside, the outer ring of the one-way bearing 35 is fixed in the mounting roller 6, and the inner ring is sleeved on the rotating shaft 34, the roller component 33 is rotatably connected with the mounting roller 6 through the one-way bearing 35, the positioning assembly includes an engaging rod 36 arranged in the mounting roller 6, and the engaging rod 36 is provided with a plurality of groups corresponding to the number of roller components 33 arranged on the same circumferential section of the mounting roller 6, the engaging rod 36 is axially slidably arranged in the mounting roller 6, each group of engaging rods 36 is arranged in the mounting roller 6 corresponding to the plurality of groups of roller components 33 in the same axial direction of the mounting roller 6, and the engaging rod 36 is provided with a local tooth unit 37 meshing with the plurality of groups of engaging portions 332, which is closest to the second through hole 10 In the initial state, the local tooth unit 37 on one side is meshed and connected with the meshing portion 332 on the side closest to the second through hole 10, and the other local tooth units 37 are not meshed and connected with the meshing portion 332 in the initial state. In this way, when the roll slides to the last group of roller components 33 and continues to slide, the rotation of the roller component 33 will drive the meshing rod 36 to move through the meshing of the local tooth units 37. When the meshing rod 36 moves a certain distance, all the local tooth units 37 are meshed with the meshing portions 332 at the corresponding positions. When the meshing rod 36 moves to the leftmost side and cannot move further, all the roller components 33 will also be unable to rotate, thereby limiting the roll to the current position. Under the action of the one-way bearing 35, the meshing rod 36 will not move to the other side, thereby keeping the roll stably in the position of winding the packaging film.

[0029] See also Figure 3 , Figure 7-10In order to pull the installation roller 6 into the traction cabin 9 and to separate the wound reel from the installation roller 6 when it is needed, a reset assembly is provided, which includes a side plate 38, a second spring 39, a screw 40 and a hinged rod 41. The side plates 38 are symmetrically arranged on both sides of the axial direction of the installation roller 6 and are located inside the installation roller 6. The screw 40 penetrates the side plates 38 on both sides and forms a rotation connection. The threaded sleeves on both sides of the screw 40 are provided with shaft sleeves 42. The hinged rod 41 is symmetrically arranged on both sides of each group of meshing rods 36 and one end away from the meshing rod 36 is respectively connected to the two sides of the meshing rod 36. The corresponding shaft sleeve 42 is hingedly arranged, a hollow groove 43 is arranged in the middle of the mounting roller 6, and plate grooves 44 for the side plate 38 to slide are arranged at both ends of the hollow groove 43. The second spring 39 is arranged in the groove of the side plate 38 close to the first through hole 15 and is used to resist the side plate 38. After the engaging rod 36 moves inward along the installation radius and the local tooth unit 37 is disengaged from the engaging portion 332, the side plate 38 and all the engaging rods 36 are pushed to the right as a whole under the action of the second spring 39, so as to facilitate the next installation of the reel on the mounting roller 6.

[0030] See also Figure 3 , Figure 7-10 The frame is also provided with a linkage component for driving the screw 40 to rotate, the linkage component includes a linkage rod 45 and a linkage shaft 46, the linkage shaft 46 is rotatably arranged on the side of the installation roller 6 close to the second through hole 10, one end of the linkage rod 45 is fixedly connected to the screw 40, and the other end is inserted into the linkage shaft 46 to form a sliding connection, and a linkage rod groove 53 for the linkage rod 45 to slide is arranged on one side of the linkage shaft 46, wherein the linkage rod 45 is non-cylindrical, and a socket 47 for the linkage shaft 46 to be inserted into the end of the electromagnet 314 close to the screw 40, a spiral groove 48 is arranged on the outer shaft side of the linkage shaft 46, and a guide shaft 49 matching the spiral groove 48 is arranged inside the socket 47, an entrance groove 50 for inserting the power supply magnet 314 is arranged on the side of the installation roller 6 close to the second through hole 10, and a magnetic attraction portion 51 that is magnetically attracted to the electromagnet 314 is arranged on the inner wall of the entrance groove 50, and the linkage shaft 46 and A torsion spring 52 is connected between the mounting rollers 6. When the electromagnet 314 is energized, the electromagnet 314 is sucked into the entrance groove 50 by the magnetic attraction portion 51. The guide shaft 49 in the electromagnet 314 will slide in the spiral groove 48 and drive the linkage shaft 46 to rotate. The rotation of the linkage shaft 46 will drive the screw 40 to rotate through the linkage rod 45. The rotation of the screw 40 will drive the shaft sleeves 42 on both sides to move toward the side away from each other, and drive the meshing rod 36 to move along the radial inner side of the mounting roller 6 through the hinge rod 41, so that when the electromagnet 314 pulls the mounting roller 6 into the traction cabin 9, the reel falls off from the mounting roller 6. It should be noted that: some of the roller assemblies are rotatably set on the mounting roller 6 through the one-way bearing 35, and the remaining roller assemblies are directly rotatably connected to the mounting roller 6 through the rotating shaft 34, so as to prevent the reel from falling off the mounting roller 6 when the mounting roller 6 is pulled into the traction cabin 9.

[0031] See also Figure 3 ,5 6, a protrusion 54 is provided on the side of the connecting plate 313 opposite to the second through hole 10, a protrusion 55 is provided on the protrusion 54, one end of the protrusion 55 is inserted into the electromagnet 314, and a limit plate 56 is provided on the end of the protrusion 55 inserted into the electromagnet 314, and a limit groove 57 for the limit plate 56 to slide horizontally is provided in the electromagnet 314, and a third spring 58 is provided in the limit groove 57. After the installation roller 6 is pulled to the traction cabin 9 and the reel falls off, the installation roller 6 is pushed to the unloading position of the frame by the electromagnet 314, so that the electromagnet When the iron 314 is powered off, the linkage shaft 46 will rotate back under the action of the torsion spring 52, and the spiral groove 48 and the guide shaft 49 will push the electromagnet 314 toward the side of the protrusion 54 to disengage the electromagnet 314 from the entrance groove 50, so that the installation roller 6 can subsequently move to the coiling position through the cross plate 4, wherein the outer end of the electromagnet 314 can be set to a conical surface, so that the cross plate 4 can be against the outer wall of the electromagnet 314 when it rotates to the unloading position next time, so that the electromagnet 314 can continue to be stuck in the entrance groove 50.

[0032] See also Figure 1-10 When the device is in use, the storage cavity 22 of the reel compartment 8 is filled with reels. When a group of mounting rollers 6 are located at the unloading position and need to be inserted with reels, the first motor 231 is started, and the first motor 231 drives the first screw rod 232 to rotate. The rotation of the first screw rod 232 will drive the push plate 233 to move toward one side of the first through hole 15 and push a group of reels out of the first through hole 15. When the reels are pushed out, the upper part of the U-shaped plate 28 pops out under the action of the first spring 30 and resists the upper reel to prevent the reel from falling.

[0033] After the reel passes through the first through hole 15, it continues to move and will pass through the expanded hole 16. The reel and the inclined surface 20 of the positioning plate 18 will abut against each other, and the positioning plate 18 will slide into the groove of the positioning plate 18. Since the other end of the mounting roller 6 cooperates with the rotating hole 14 and will not move axially under the abutment of the electromagnet 314, the reel will slide on the mounting roller 6 after passing through the positioning plate 18. The reel continues to slide and will be sleeved on the roller component 33 of the mounting roller 6 and continue to move through the roller component 33. When the reel moves to the last group of roller components 33 and continues to move, the local tooth unit 37 on the meshing rod 36 will mesh with the meshing portion 332. The movement of the reel drives the roller component 33 to rotate, thereby driving the engaging rod 36 to move toward the left side. When the reel continues to move on the mounting roller 6 and the engaging rod 36 moves to the leftmost position and cannot move further, the roller component 33 cannot continue to rotate due to the meshing action of the local tooth unit 37 and the engaging portion 332, thereby positioning the reel at the current position (the position of the winding packaging film). Then, the first motor 231 drives the first screw rod 232 to reverse, and moves the push plate 233 toward the side of the U-shaped plate 28, pushing the U-shaped plate 28 into the slide groove 29, so that one of the reels on the upper side of the U-shaped plate 28 falls onto the partition 25.

[0034] After the roll is installed, after the roll on the installation roller 6 at the winding position has finished winding the packaging film, the ultrasonic cutting knife 3 cuts the packaging film, and presses the packaging film on the surface of the roll through the pressure wheel group 2 and rotates to make the head of the packaging film fit together, and then the installation roller 6 at the unloading position and the installation roller 6 at the winding position are driven to switch positions through the rotation of the cross plate 4. When the installation roller 6 after winding moves to the unloading position, the second motor 311 is started, and the second motor 311 drives the second screw rod 312 to rotate. The rotation of the second screw rod 312 drives the connecting plate 313 to move. The movement of the connecting plate 313 will drive the electromagnet 314 to move toward one side of the installation roller 6, and the electromagnet 314 is energized. The electromagnet 314 will be magnetically attracted by the magnetic attraction part 51 and enter the entrance groove 50. Under the cooperation of the guide shaft 49 in the electromagnet 314 and the spiral groove 48 on the linkage shaft 46, the linkage shaft 46 will be driven to rotate, and the linkage shaft 46 drives the screw through the linkage rod 45 When the second gear 310 is in the state of rotation, the second motor 311 drives the second lead screw 312 to rotate in the reverse direction, and drives the electromagnet 314 to move toward the inner side of the frame, thereby pushing the mounting roller 6 to the unloading position again.

[0035] When the installation roller 6 is located at the unloading position again, the electromagnet 314 is powered off. Under the action of the torsion spring 52, the linkage shaft 46 will reverse and push the electromagnet 314 out of the entrance groove 50 through the cooperation of the guide shaft 49 and the spiral groove 48, so that the cross plate 4 can drive the installation roller 6 at the unloading position to move to the coiling position.

[0036] See also Figure 1 , a process for preparing a sterile packaging film for medical devices, comprising the following steps: Step 1: Place the corona layer, the middle layer and the easy-peel layer in a three-layer co-extrusion cast film machine to obtain a three-layer composite film material; Step 2: The three-layer composite film material is subjected to thickness measurement, corona treatment, winding, plasticization and slitting to obtain a packaging film for medical packaging, wherein the film is wound and the roll is replaced by a new roll using the above-mentioned sterile packaging film preparation device for medical devices.

[0037] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preparing aseptic packaging film for medical devices, comprising a machine base (1), a pressing wheel group (2) slidably arranged on the front side of the machine base (1), and an ultrasonic cutting knife (3) slidably arranged on the machine base (1) to the left and right, a cross plate (4) rotatably arranged inside the machine base (1), the cross plates (4) are symmetrically arranged on both sides of the machine base (1), and a film winding roller assembly is arranged between the cross plates (4) on both sides, characterized in that: The film winding roller assembly comprises a pressure roller (7) and a mounting roller (6); the machine base (1) is provided with a reel cabin (8) on the outer wall of one side of the pressure roller (7) assembly, and a traction cabin (9) is provided on the outer wall of the other side of the pressure roller (7) assembly; the cross plate (4) rotates to drive the mounting roller (6) to switch between the winding position and the unwinding position; the frame is provided with a first through hole (15) between the reel cabin (8) and the pressure roller (7) assembly; when the mounting roller (6) is in the unwinding position, the first through hole (15) and a group of mounting rollers (6) are in a coaxial position; the frame is located between the pressure roller (7) assembly and the traction cabin (9 ), the second through hole (10) is coaxially arranged with the first through hole (15), a first driving component (23) is arranged in the reel cabin (8) for driving the reel of unwound film to slide from the first through hole (15) to the mounting roller (6), an expansion hole (16) is arranged at the cross plate (4) on one side of the reel cabin (8) for the mounting roller (6) to be rotatably connected, a rotatable connecting member for the mounting roller (6) to be used for limiting the position is arranged inside the expansion hole (16), and a second driving component (31) for traction of the mounting roller (6) is arranged in the traction cabin (9); A plurality of groups of roller components (33) are provided on the outer peripheral side of the installation roller (6), a positioning assembly is provided inside the installation roller (6) for limiting the rotation of the roller assembly after the reel is moved and sleeved at a required position of the installation roller (6), and a reset assembly is also provided inside the installation roller (6) for restoring the roller assembly to an initial state of rotation.

2. The device for preparing a sterile packaging film for medical devices according to claim 1, characterized in that: The mounting roller (6) is rotatably mounted on the cross plate (4); a tooth portion (11) is provided on a side of the circumferential outer wall of the mounting roller (6) close to the second through hole (10); a third motor (12) is provided on the cross plate (4) close to the second through hole (10); an output end of the third motor (12) extends into the cross plate (4) and is connected to a toothed disc (13) meshing with the tooth portion (11).

3. The device for preparing a sterile packaging film for medical devices according to claim 1, characterized in that: The reel cabin (8) is provided with a material storage chamber (22) for placing a reel, the first driving assembly (23) comprises a first motor (231), a first screw rod (232) and a push plate (233), the bottom of the material storage chamber (22) is provided with a driving chamber (24), a partition plate (25) is provided between the material storage chamber (22) and the driving chamber (24), the first motor (231) is arranged in the driving chamber (24) and the output end is fixedly connected to the first screw rod (232), a linkage plate (59) is threadedly sleeved on the first screw rod (232), the push plate (233) is arranged at the bottom of the material storage chamber (22) and a connecting rod (26) is connected to the linkage plate (59), the partition plate (25) is provided with a rod groove (27) for the connecting rod (26) to slide horizontally, and a partition assembly is provided on one side of the reel cabin (8) located at the bottom of the material storage chamber (22).

4. The device for preparing a sterile packaging film for medical devices according to claim 3, characterized in that: The partition assembly comprises a U-shaped plate (28) and a first spring (30); a slide groove (29) for the U-shaped plate (28) to slide horizontally is provided on the inner wall of the material storage chamber (22); one end of the first spring (30) is fixed to the inner wall of the slide groove (29) away from the frame, and the other end is against the U-shaped plate (28); the opening of the first through hole (15) is located at the bottom of the material storage bin.

5. The device for preparing a sterile packaging film for medical devices according to claim 1, characterized in that: The second driving assembly (31) comprises a second motor (311), a second screw rod (312), a connecting plate (313) and an electromagnet (314); a connecting plate groove (32) for the connecting plate (313) to slide horizontally is provided in the traction cabin (9); the second motor (311) is fixed in the connecting plate groove (32) and an output end is fixedly connected to the second screw rod (312); the second screw rod (312) passes through the connecting plate (313) and forms a threaded connection; the electromagnet (314) is fixed on the connecting plate (313) and is opposite to the second through hole (10) and is used to form a connection with the mounting roller (6).

6. The device for preparing a sterile packaging film for medical devices according to claim 5, characterized in that: The roller component (33) comprises a pressure wheel portion (331) and an engagement portion (332); the roller component (33) is axially provided with a rotating shaft (34); the rotating shaft (34) is sleeved with a one-way bearing (35); the outer ring of the one-way bearing (35) is fixed in the installation roller (6); the inner ring is sleeved on the rotating shaft (34); the roller component (33) is rotationally connected to the installation roller (6) via the one-way bearing (35); the positioning assembly comprises an engagement rod (36) arranged in the installation roller (6); the engagement rod (36) is provided with a plurality of roller components (33) arranged on the same circumferential section of the installation roller (6) The meshing rod (36) is slidably arranged in the mounting roller (6) along the axial direction of the mounting roller (6), and each group of meshing rods (36) corresponds to a plurality of groups of roller components (33) arranged in the mounting roller (6) in the same axial direction of the mounting roller (6). The meshing rod (36) is provided with a local tooth unit (37) meshing with the plurality of groups of meshing portions (332). The local tooth unit (37) closest to the second through hole (10) is meshed with the meshing portion (332) closest to the second through hole (10) in an initial state, and the other local tooth units (37) are not meshed with the meshing portion (332) in an initial state.

7. The device for preparing a sterile packaging film for medical devices according to claim 6, characterized in that: The reset assembly comprises a side plate (38), a second spring (39), a screw rod (40) and a hinge rod (41); the side plates (38) are symmetrically arranged on both sides of the axial direction of the mounting roller (6) and are located inside the mounting roller (6); the screw rod (40) penetrates the side plates (38) on both sides and forms a rotation connection; the threaded sleeves on both sides of the screw rod (40) are provided with shaft sleeves (42); the hinge rod (41) is symmetrically arranged on both sides of each group of meshing rods (36) and one end away from the meshing rods (36) is respectively hinged to the shaft sleeves (42) corresponding to the two sides; a hollow groove (43) is arranged in the middle of the mounting roller (6); plate grooves (44) for the side plates (38) to slide are arranged at both ends of the hollow groove (43); the second spring (39) is arranged in the groove of the side plate (38) close to the first through hole (15) and is used to abut against the side plate (38); and a linkage assembly for driving the screw rod (40) to rotate is also provided on the frame.

8. The device for preparing a sterile packaging film for medical devices according to claim 7, characterized in that: The linkage assembly comprises a linkage rod (45) and a linkage shaft (46). The linkage shaft (46) is rotatably arranged on a side of the installation roller (6) close to the second through hole (10). One end of the linkage rod (45) is fixedly connected to the screw rod (40), and the other end is inserted into the linkage shaft (46) to form a sliding connection. An end of the electromagnet (314) close to the screw rod (40) is provided with a socket (47) for inserting the linkage shaft (46). An outer shaft side of the linkage shaft (46) is provided with a spiral groove (48). A guide shaft (49) matching the spiral groove (48) is provided inside the socket (47). An entrance groove (50) for inserting the power supply magnet (314) is provided on a side of the installation roller (6) close to the second through hole (10). A magnetic attraction portion (51) that is magnetically attracted to the electromagnet (314) is provided on the inner wall of the entrance groove (50). A torsion spring (52) is connected between the linkage shaft (46) and the installation roller (6).

9. The device for preparing a sterile packaging film for medical devices according to claim 8, characterized in that: A protrusion (54) is provided on the side of the connecting plate (313) opposite to the second through hole (10), a protrusion (55) is provided on the protrusion (54), one end of the protrusion (55) is inserted into the electromagnet (314), a limit plate (56) is provided on the end of the protrusion (55) inserted into the electromagnet (314), and a limit groove (57) for the limit plate (56) to slide horizontally is provided in the electromagnet (314).

10. A process for preparing a sterile packaging film for medical devices, using the sterile packaging film preparation device for medical devices according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the corona layer, the middle layer and the easy-peel layer in a three-layer co-extrusion cast film machine to obtain a three-layer composite film material; Step 2: The three-layer composite film material is subjected to thickness measurement, corona treatment, winding, plasticization, and slitting to obtain a packaging film for medical packaging, wherein the film is wound and replaced by the sterile packaging film preparation device for medical devices according to any one of claims 1 to 9.

Images