A membrane winding fixture, a membrane winding apparatus, and a membrane winding method.

Abstract

This application discloses a membrane roll winding fixture, a membrane winding apparatus, and a membrane winding method. The membrane roll winding fixture includes an end cap for mounting on at least one axial end of a membrane filament sleeve. The end cap has a shaft hole for inserting an axially rotating shaft. The end cap includes an outer ring portion and has a first state and a second state. In the first state, the outer ring portion partially or completely surrounds the sidewall of the membrane filament sleeve. In the second state, the outer ring portion exposes the outer sidewall. The membrane roll winding fixture can improve the finished quality of the membrane roll.

Description

Technical Field

[0001] This application relates to the field of membrane oxygenators, and in particular to a membrane winding fixture, membrane winding apparatus and membrane winding method. Background Technology

[0002] The oxygenator is the core component of extracorporeal membrane oxygenation (ECMO). Blood exchanges oxygen and carbon dioxide through the oxygenation membrane fibers in the oxygenator. In some current oxygenator manufacturing processes, oxygenation membrane fibers, provided in strip form, are first wound onto a membrane fiber sleeve to form a membrane roll; then end caps are installed at both ends of the membrane roll, and the ends of the membrane roll are sealed with adhesive; finally, the ends of the membrane roll are cut to expose the through holes on the end faces of the oxygenation membrane fibers to facilitate gas passage.

[0003] The quality of the membrane roll is one of the key factors affecting the quality of oxygenator products. During the process of removing the membrane roll from the shaft and installing the end caps, the wound membrane roll may become loose due to loss of fixation, and the operator is easily exposed to the roll during this process, causing contamination. Furthermore, due to the fragile structure of the oxygenated membrane fibers, the process of installing end caps at both ends of the membrane roll can easily damage them. These problems lead to a decrease in the quality of the membrane roll. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a membrane roll winding fixture, a membrane winding apparatus, and a membrane winding method. The membrane roll winding fixture can improve the finished quality of the membrane roll.

[0005] The membrane roll winding fixture provided in this application includes an end cap for mounting at at least one end of a membrane filament sleeve along the axial direction. The end cap has a shaft hole for passing through a rotating shaft along the axial direction. The end cap includes an outer ring portion and has a first state and a second state. In the first state, part or all of the outer ring portion surrounds the sidewall of the membrane filament sleeve. In the second state, the outer ring portion exposes the outer sidewall.

[0006] The membrane roll winding fixture provided in this application has at least the following technical advantages: The end cap is pre-installed on the end of the membrane filament sleeve before winding. At this time, the outer ring of the end cap is in a first state, maintaining the structure of the membrane filament sleeve. When the outer ring switches from the first state to the second state, on the one hand, this allows the outer ring to avoid the membrane filaments during the winding process, and the end of the membrane roll naturally enters the glue-filling cavity, eliminating the need to wait for the membrane roll to be wound before inserting the end cap, thus reducing the risk of membrane roll damage. On the other hand, this allows the outer ring to switch back to the first state after winding, securing the membrane roll as early as possible and reducing the risk of the membrane roll becoming loose. Furthermore, when the outer ring secures the membrane roll, a rotating shaft serves as the support for the membrane roll winding fixture. When removing the membrane roll winding fixture, the operator can grasp the outer ring, thus avoiding contact with the membrane roll. Therefore, the membrane roll winding fixture can improve the finished quality of the membrane roll.

[0007] According to some embodiments of this application, the end cap includes at least one of the following to switch between the first state and the second state: the outer ring portion is detachably mounted in the end cap; the outer ring portion is movably mounted in the end cap; the outer ring portion is made of a flexible deformable material.

[0008] According to some embodiments of this application, the film roll winding fixture includes two end caps, which are respectively used to be installed at both ends of the film filament sleeve.

[0009] According to some embodiments of this application, the outer ring portion can be flipped away from the membrane filament sleeve.

[0010] According to some embodiments of this application, the outer ring portion is made of a flexible and deformable material, the outer ring portion defines a non-outer ring portion in the end cap, and a weakening groove is provided at the junction of the outer ring portion and the non-outer ring portion.

[0011] According to some embodiments of this application, the end cap includes an inner ring portion connected to the outer ring portion, the inner ring portion being used for mounting on the membrane filament sleeve, and the inner ring portion having the shaft hole.

[0012] According to some embodiments of this application, the end cap includes a connecting portion, the outer edge of which is connected to the outer ring portion, and the inner edge of which is connected to the inner ring portion.

[0013] According to some embodiments of this application, the end cap includes an extension section that abuts against the end of the membrane fiber sleeve, the outer diameter of the extension section being the same as the outer diameter of the membrane fiber sleeve, so as to allow the extension section to carry the membrane roll.

[0014] According to some embodiments of this application, the end cap includes a third positioning structure connected to the membrane fiber sleeve, the third positioning structure being used to improve the coaxiality of the extension section and the membrane fiber sleeve.

[0015] The film winding apparatus provided in this application includes an unwinding assembly and a winding assembly arranged in sequence, wherein the winding assembly includes the film winding fixture provided in this application.

[0016] According to some embodiments of this application, the unwinding assembly includes an unwinding roller and a first driver. The unwinding roller is used to carry a roll of film filaments, and the first driver is used to drive the unwinding roller to rotate to release the film filaments. The winding assembly includes a winding roller and a second driver. The film roll winding fixture is mounted on the winding roller, and the second driver is used to drive the winding roller to rotate to wind the film filaments.

[0017] According to some embodiments of this application, the film winding apparatus includes a web-correcting assembly, which includes a web-correcting table, a third driver, and a web-correcting detector. The winding assembly and the web-correcting detector are mounted on the web-correcting table. The web-correcting detector is located upstream of the winding assembly. The web-correcting detector is used to detect the axial offset of the strip on the winding roller. The third driver is capable of driving the web-correcting table to move axially in response to the offset of the strip to perform web correction.

[0018] According to some embodiments of this application, the film winding device includes a tensioning assembly, the tensioning assembly including a guide roller located between the unwinding assembly and the winding assembly, the guide roller being used to press against the film filaments.

[0019] According to some embodiments of this application, the tensioning assembly includes a pressure sensor and a controller. The pressure sensor is connected to the guide roller and is used to detect the force exerted by the membrane fibers on the guide roller. The pressure sensor is communicatively connected to the controller, which is capable of adjusting the driving speed of the first driver and / or the second driver in response to changes in the force on the guide roller.

[0020] According to some embodiments of this application, the film winding apparatus includes a tensioning assembly, the tensioning assembly including a controller, the controller being able to adjust the winding speed of the second driver in response to changes in the winding radius.

[0021] According to the membrane winding method provided in this application, the membrane winding method uses the membrane winding apparatus provided in this application, and the membrane winding method includes the following steps:

[0022] Install the oxygenator's membrane filament sleeve on the membrane roll winding fixture;

[0023] The end cap is switched to the second state so that the outer ring avoids the winding area of ​​the membrane fibers;

[0024] The membrane winding fixture rotates along the axis to wind the membrane filaments into a membrane roll;

[0025] The end cap is switched to the first state to reset the outer ring portion, press down on the outer periphery of the membrane roll and fix the membrane roll.

[0026] According to some embodiments of this application, during the winding of the membrane filaments, the axial position of the membrane winding fixture is adjusted to correct the deviation of the membrane filaments.

[0027] According to some embodiments of this application, during the winding of the membrane filaments, at least one of the following methods is used to control the tension of the membrane filaments: adjusting the winding speed of the membrane winding fixture; adjusting the feeding speed of the membrane filaments; adjusting the length of the conveying path of the membrane filaments.

[0028] The membrane winding apparatus provided in this application includes the membrane roll winding fixture of this application, and the membrane winding method provided in this application uses the membrane roll winding fixture of this application. Therefore, the membrane winding apparatus and the membrane winding method have the beneficial effects of the aforementioned membrane roll winding fixture, which will not be repeated here. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a three-dimensional schematic diagram of the membrane roll winding fixture of this application when the membrane filament sleeve is installed;

[0031] Figure 2 yes Figure 1 An explosion diagram;

[0032] Figure 3 This is a cross-sectional schematic diagram of the membrane roll winding fixture of this application when the membrane filament sleeve is installed;

[0033] Figure 4 yes Figure 3 A magnified view of a portion of region A in the middle;

[0034] Figure 5 This is a cross-sectional schematic diagram of the outer ring of the film roll winding tool according to an embodiment of this application after it has been flipped over;

[0035] Figure 6 This is a perspective schematic diagram of a film winding apparatus according to an embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the structure of the take-up roller in the film winding apparatus of this application embodiment;

[0037] Figure 8 This is a schematic flowchart of the film winding method according to an embodiment of this application.

[0038] Figure label:

[0039] First end cap 1000, first base 1100, first inner ring 1110, glue overflow cavity 1111, first channel 1112, second channel 1113, reinforcing rib 1114, positioning hole 1115, first shaft hole 1120, first cover 1200, first outer ring 1210, weakening groove 1211, extension section 1212, positioning ring 1213, glue filling hole 1214, first connecting part 1220, first chamber 1300.

[0040] Second end cap 2000, second base 2100, second inner ring portion 2110, second shaft hole 2120, second cover 2200, third cover 2300, second outer ring portion 2310.

[0041] Unwinding roller 3100, first clutch 3200,

[0042] Take-up roller 4100, main shaft 4110, first bushing 4120, second bushing 4130, collar 4140, second driver 4200, second clutch 4300, counter 4400.

[0043] Correction station 5100, correction detector 5200

[0044] Roller 6100, pressure sensor 6200, controller 6300, roller holder 6400

[0045] 9000 membrane fiber sleeve. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0047] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0049] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0050] Typically, the membrane filament sleeve 9000 is part of the oxygenator. The membrane roll winding fixture is used to engage with the end of the membrane filament sleeve 9000 so that the membrane filament sleeve 9000 can be mounted on the rotating shaft for winding. The membrane filament sleeve 9000 winds the oxygenated membrane filaments, provided in the form of a strip, onto its own outer surface to form the desired membrane roll.

[0051] After winding, the film roll is cut off from the material strip, and the film roll loses the tension generated by the material strip. Therefore, it is necessary to constrain the film roll through other structures, otherwise the film roll will easily become loose.

[0052] After winding, the two ends of the membrane roll need to be sealed with adhesive, thus requiring the formation of adhesive filling cavities at both ends. Some current manufacturing processes choose to form the membrane roll first, and then insert the end caps into the membrane roll to form the filling cavity. During the insertion process, the inner and outer walls of the filling cavity may be damaged by the oxygenated membrane fibers.

[0053] The membrane roll winding fixture provided in this application includes an end cap for mounting at at least one axial end of a membrane filament sleeve 9000. The end cap has a shaft hole for inserting an axially rotating shaft. The end cap includes an outer ring portion and has a first state and a second state. In the first state, part or all of the outer ring portion surrounds the sidewall of the membrane filament sleeve 9000. In the second state, the outer ring portion exposes the outer sidewall.

[0054] Reference Figure 1 In this application, axial refers to the direction of the axis of the membrane filament sleeve 9000, and outer refers to the direction away from the axis in the radial direction of the membrane filament sleeve 9000.

[0055] In this application, since the outer ring portion can avoid the winding process, the end cap can be pre-installed on the end of the membrane fiber sleeve 9000 before winding. When the outer ring portion avoids the winding process, the end of the membrane fiber sleeve 9000 will be exposed radially, allowing the membrane roll to be wound smoothly without waiting for the membrane roll to be wound before inserting the end cap into the membrane roll, thus reducing the risk of membrane roll damage.

[0056] Pre-installing the end caps allows the outer ring to lock the membrane roll as early as possible after winding, eliminating the need to wait until the membrane filament sleeve 9000 is removed from the shaft before inserting the end caps into the roll, thus reducing the risk of the roll becoming loose. "Locking" can mean the outer ring abuts against the roll or presses the roll firmly.

[0057] Therefore, film roll winding fixtures can improve the quality of finished film rolls.

[0058] In some embodiments, the end cap includes at least one of the following to switch between a first state and a second state:

[0059] The outer ring is detachably installed in the end cap;

[0060] The outer ring is movably installed in the end cap;

[0061] The outer ring is made of a flexible and deformable material.

[0062] "Removable installation" means that the outer ring can adopt a quick-release structure design such as snap-fit, screw, or interlocking. In the first state, the outer ring is installed together with the non-outer ring part of the end cap to constrain the wound membrane roll. In the second state, the outer ring is removed from the end cap to avoid the movement path of the oxygen membrane filaments during winding.

[0063] "Modifiable installation" means that the outer ring can be switched between a first position and a second position by means of movement or swinging. In the first state, the outer ring is in the first position and can be used to constrain the wound membrane roll. In the second state, the outer ring is in the second position, thereby avoiding the movement path of the oxygen membrane filaments during winding.

[0064] The use of a flexible, deformable material allows the outer ring to be compressed or flipped, switching between a first position and a second position. In the first state, the outer ring is in the first position, and in the second state, it is in the second position, thus avoiding the movement path of the oxygen film filament during winding. The flexible, deformable material can be a polymer material with a certain degree of elasticity, such as silicone or rubber. The outer ring made of the flexible, deformable material can be combined with other parts of the end cap through injection molding or other common processes, or the end cap itself can be made of a flexible, deformable material.

[0065] Using flexible and deformable materials or employing a swinging motion allows the outer ring to flip away from the membrane sleeve 9000, thereby switching from the first state to the second state. The flipping method reduces the contact and collision between the outer ring and the surface of the membrane roll during the process of the outer ring returning from the second position to the first position, thus reducing damage to the membrane roll.

[0066] Reference Figure 1 and Figure 2 ,exist Figure 1 and Figure 2 In this embodiment, two end caps are respectively installed at both ends of the membrane filament sleeve 9000. The two end caps (defined as the first end cap 1000 and the second end cap 2000, respectively) switch between the first state and the second state in different ways.

[0067] The first end cap 1000 includes a first base 1100 and a first cover 1200. The first base 1100 has a shaft hole, which is a first shaft hole 1120. The first cover 1200 is sleeved on the first base 1100. The first cover 1200 is made of a flexible and deformable material and includes an outer ring portion, which is a first outer ring portion 1210. In a first state, the first outer ring portion 1210 covers the end of the membrane fiber sleeve 9000. In a second state, the first outer ring portion 1210 is flipped away from the membrane fiber sleeve 9000, so that the end of the membrane fiber sleeve 9000 is exposed.

[0068] The difference between the second end cap 2000 and the first end cap 1000 is that the second end cap 2000 includes a second base 2100, a second cover 2200, and a third cover 2300, with the third cover 2300 having a second outer ring portion 2310. In the first state, the second cover 2200 is fitted onto the second base 2100, and the third cover 2300 covers the second cover 2200, with the outer edge of the second cover 2200 engaging the inner wall of the third cover 2300, and the second outer ring portion 2310 covering the end of the membrane fiber sleeve 9000. In the second state, the third cover 2300 is removed, exposing the end of the membrane fiber sleeve 9000.

[0069] Of course, the first cover 1200 and the first base 1100 can also be installed in other ways commonly used in related technologies, as can the second base 2100, the second cover 2200 and the third cover 2300.

[0070] Furthermore, in the embodiment of the first end cap 1000, the first outer ring portion 1210 is flipped over and the rotating shaft serves as the support for the film roll winding fixture. When the film roll winding fixture is removed, the operator can grasp the first outer ring portion 1210, thereby avoiding the operator from contacting the film roll and reducing the risk of the film roll being contaminated.

[0071] Furthermore, in some embodiments, the shaft hole of the end cap can also serve to connect the end cap and the rotating shaft and transmit torque. For example, a spline connection or interference fit connection can be used between the shaft hole and the rotating shaft, thereby simplifying the structure of the film roll winding fixture. Of course, in other embodiments, the shaft hole can also simply serve as a clearance hole for the rotating shaft, with other structures used to fix the film roll winding fixture and transmit torque.

[0072] For an embodiment where the outer ring uses a flexible, deformable material to achieve the flipping, for example... Figure 2 In an embodiment of the first end cap 1000, in order to improve the ease of operation of flipping, a weakening groove 1211 may be provided in the junction area between the outer ring portion and the non-outer ring portion of the end cap.

[0073] Specific reference Figure 2 The "non-outer ring portion" refers to the remaining part of the first end cap 1000 after removing the first outer ring portion 1210. In other words, the outer ring portion defines the non-outer ring portion within the end cap. The weakening groove 1211 reduces the thickness of the area where it is located, making it easier to flip at the location of the weakening groove 1211. Simultaneously, the weakening groove 1211 also provides a certain positioning effect, improving the positional consistency of the first outer ring portion 1210 during flipping and avoidance maneuvers.

[0074] For example, refer to Figure 3 and Figure 4 In one embodiment, the outer wall of the first end cap 1000 serves as the first outer ring portion 1210, and the weakening groove 1211 is located at the junction area between the outer wall of the first end cap 1000 and the rest of the first end cap 1000. Figure 5 This is a schematic diagram of the flexible and deformable first outer ring 1210 after it has been flipped over. (Refer to...) Figure 5 When flipped, the part corresponding to the weakening groove 1211 bends and deforms, making it easy for the first outer ring 1210 to flip outward.

[0075] It is understood that "part or all of the outer ring portion surrounds the sidewall of the membrane filament sleeve 9000". In other words, in some embodiments, the meaning of the first outer ring portion 1210 may not be limited to the outer sidewall of the first end cap 1000. Generally, the first outer ring portion 1210 and the part of the first end cap 1000 that is not the first outer ring portion 1210 can be distinguished according to the location of the weakening groove 1211.

[0076] In some embodiments, the end cap includes an inner ring portion connected to an outer ring portion. The inner ring portion is used to mount on the membrane fiber sleeve, and a pivot is provided in the inner ring portion. In some embodiments, the inner ring portion is partially inserted into the membrane fiber sleeve 9000, thereby also serving to support the end of the membrane fiber sleeve 9000, improving the rigidity of the membrane fiber sleeve 9000, and preventing deformation of the membrane fiber sleeve 9000 during winding.

[0077] For example, refer to Figure 2 and Figure 5 In some embodiments, the first base 1100 of the first end cap 1000 includes a first inner ring portion 1110, and a first shaft hole 1120 is formed in the middle of the first inner ring portion 1110. The second base 2100 of the second end cap 2000 includes a second inner ring portion 2110, and a second shaft hole 2120 is formed in the middle of the second inner ring portion 2110.

[0078] In some embodiments, the end cap further includes a connecting portion, the outer edge of which connects to an outer ring portion, and the inner edge of which connects to an inner ring portion. For example, see reference... Figure 3 as well as Figure 5 In an embodiment where the end cap is the first end cap 1000, the first cover 1200 includes a connecting portion, which is a first connecting portion 1220. A portion of the first connecting portion 1220 extends radially, thereby connecting the outer edge to the first outer ring portion 1210. An inner portion of the first connecting portion is fitted onto the first base 1100 and is combined with the first base 1100 by its own elasticity, thereby connecting the inner edge to the first inner ring portion 1110.

[0079] Of course, the inner ring and outer ring can also be connected without a connecting part, for example, continuing to refer to Figure 3 as well as Figure 5 In an embodiment where the end cap is the second end cap 2000, the second cover 2200 is fitted onto the second base 2100, and an annular slot is formed between the second cover 2200 and the second base 2100. A portion of the third cover 2300 is inserted into the slot, and the shape of the third cover 2300 matches the second cover 2200, thereby engaging with the second cover 2200.

[0080] Understandably, the end cap and the membrane fiber sleeve 9000 enclose a cavity for accommodating the end of the membrane roll, for example in... Figure 2 In one embodiment, the first end cap 1000 and the membrane filament sleeve 9000 enclose a first chamber 1300, which can serve as a filling chamber in the oxygenator filling process.

[0081] Since the membrane roll needs to be cut at both ends after the glue sealing process to make the oxygenated membrane filaments axially aligned and expose their through holes, the existing oxygenator manufacturing process usually makes the axial dimension of the membrane roll larger than the dimension of the membrane filament sleeve 9000, so that the two ends of the membrane roll extend beyond the membrane filament sleeve 9000. This prevents damage to the membrane filament sleeve 9000 during the cutting of the membrane roll. Therefore, in some embodiments, the inner wall of the end cap (e.g., the inner wall of the first cover 1200 in the first end cap 1000, or the inner wall of the second cover 2200 in the second end cap 2000) is used to contact the membrane roll and provides support during subsequent cutting.

[0082] Taking the first end cap 1000 as an example, in some embodiments, the end cap further includes an extension section 1212, which is connected to the end of the membrane fiber sleeve 9000. The outer diameter of the extension section 1212 is the same as the outer diameter of the membrane fiber sleeve 9000 to allow the extension section to carry the membrane roll. The connection between the extension section 1212 and the membrane fiber sleeve 9000 can reduce the gap between the extension section 1212 and the membrane fiber sleeve 9000, avoiding local wrinkles, indentations or deformation of the membrane roll due to insufficient support.

[0083] To reduce coaxiality errors caused by installation and manufacturing errors, in some embodiments, the end cap further includes a third positioning structure. This third positioning structure is connected to the membrane fiber sleeve 9000 and is used to improve the coaxiality of the extension section 1212 and the membrane fiber sleeve 9000. Taking the first end cap 1000 as an example, refer to... Figure 4 The third positioning structure may include a positioning ring 1213. An annular positioning slot is formed on the end face of the membrane fiber sleeve 9000. The positioning ring 1213 is inserted into the positioning slot, thereby improving coaxiality. At this time, on the one hand, the first base 1100 is partially inserted into the membrane fiber sleeve 9000; on the other hand, the positioning ring 1213 mates with the positioning slot located on the end face of the membrane fiber sleeve 9000, achieving a dual positioning effect.

[0084] The design of the third positioning structure and extension section in the second end cover 2000 is similar to that of the first end cover 1000. The third positioning structure and extension section can also adopt other commonly used design methods in related technologies.

[0085] In another possible oxygenator manufacturing process, allowances can be left at both ends of the membrane fiber sleeve 9000 for cutting. During subsequent cutting, both ends of the membrane roll, along with both ends of the membrane fiber sleeve 9000, are cut off together. In this case, the membrane fiber sleeve 9000 can support the ends of the membrane roll. That is, the axial dimension of the membrane roll can also be less than or equal to the dimension of the membrane fiber sleeve 9000. Therefore, in some embodiments, the inner wall of the end cap does not directly support the membrane roll.

[0086] Taking the first end cap 1000 as an example, refer to... Figure 4 In some embodiments, the end cap further includes a glue-filling hole 1214, which is located on the outer wall of the chamber (i.e., the first chamber 1300) (i.e., the outer wall of the first cover 1200). The film roll winding fixture injects glue into the glue-filling cavity through the glue-filling hole 1214.

[0087] In some embodiments, the end cap further includes an overflow cavity 1111, which is connected to the glue filling cavity 1300. On the one hand, during the subsequent glue filling process, the overflow cavity 1111 can receive excess glue, ensuring that the glue level does not exceed the design height. On the other hand, the overflow cavity 1111 can also reduce the weight of the film roll winding fixture and reduce inertia, thereby facilitating speed control during winding.

[0088] An overflow cavity 1111 is formed in the first base 1100. In some embodiments, the end cap includes a connecting channel. The connecting channel communicates with the overflow cavity 1111 at one end near the membrane fiber sleeve 9000, and with the filling cavity 1300 at the other end away from the membrane fiber sleeve 9000. The connection position between the connecting channel and the overflow cavity 1111 is axially aligned with the design liquid level of the filling cavity 1300. When the design liquid level is not reached, the overflowing glue remains in the connecting channel. When the design liquid level is exceeded, the glue overflows from the connecting channel into the overflow cavity 1111. Since the cross-sectional area of ​​the connecting channel is smaller than that of the overflow cavity 1300, this design can reduce glue waste.

[0089] Reference Figure 4 In some embodiments, the connecting channel includes a first channel 1112 and a second channel 1113. The first channel 1112 extends axially, and the second channel 1113 extends radially. The first channel 1112 connects to the overflow cavity 1111, and the second channel 1113 connects the first channel 1112 and the filling cavity 1300.

[0090] In some embodiments, the end cap further includes a reinforcing rib 1114 located in the glue overflow cavity 1111. The reinforcing rib 1114 can improve the structural strength of the end cap and prevent the end cap from deforming, thus avoiding a decrease in dimensional accuracy. For example, it can prevent the positioning ring 1213 from being difficult to insert into the positioning slot due to deformation.

[0091] Understandably, the second end cap 2000 can adopt a similar potting design as the first end cap 1000.

[0092] In some embodiments, the end cap further includes a fourth positioning structure for connecting to a rotating shaft. This fourth positioning structure constrains the rotational freedom of the end cap on the shaft. The fourth positioning structure can, on the one hand, position the orientation of the end cap, for example, ensuring that the potting holes 1214 of both end caps face the same direction; on the other hand, it can transmit torque during rotation. (Refer to...) Figure 4 The fourth positioning structure can adopt a positioning hole 1115, which is located on the first base 1100. The axis of the positioning hole 1115 is not coaxial with the rotating shaft, so the rotational degree of freedom can be constrained by the positioning hole 1115.

[0093] Reference Figure 6 The film winding apparatus provided in this application includes an unwinding assembly and a winding assembly arranged in sequence, wherein the winding assembly includes the film winding fixture provided in this application.

[0094] The membrane winding apparatus provided in this application includes the membrane roll winding fixture provided in this application, and therefore has the beneficial effects provided by the membrane roll winding fixture, which will not be elaborated here.

[0095] In some embodiments, the unwinding assembly includes an unwinding roller 3100 and a first driver. The unwinding roller 3100 carries the roll of film filaments, and the first driver drives the unwinding roller 3100 to rotate to release the film filaments. The winding assembly includes a winding roller 4100 and a second driver 4200. A film roll winding fixture is mounted on the winding roller 4100, and the second driver 4200 drives the winding roller 4100 to rotate to wind the film filaments. It is understood that the winding roller 4100 is the shaft on which the film roll winding fixture is mounted.

[0096] Reference Figure 6 In some embodiments, the unwinding assembly further includes a first clutch 3200, through which a first driver (not shown) is driven to the unwinding roller 3100. The first clutch 3200 may be a magnetic powder clutch, thereby improving the response speed.

[0097] In some embodiments, the take-up roller 4100 includes a main shaft 4110 and a bushing. The bushing includes a first end and a second end spaced apart in the axial direction. A film roll winding fixture is mounted on the bushing, and the first and second ends limit the film roll winding fixture. For example, see reference to... Figure 7 In some embodiments, the bushing includes a first bushing 4120 and a second bushing 4130. The first bushing 4120 includes a first end, and the second bushing 4130 includes a second end. The first bushing 4120 and the second bushing 4130 are respectively inserted into the film roll winding fixture from both ends of the film filament sleeve 9000 and docked with each other, thereby positioning the film roll winding fixture in the axial direction.

[0098] In some embodiments, the bushing includes a fifth positioning structure that mates with a fourth positioning structure of the end cap 100. For example, see reference... Figure 7 The fifth positioning structure includes a positioning pin located at the first and second ends. The positioning pin is inserted into the positioning hole 121 of the end cover 100 to achieve positioning. Alternatively, in some other embodiments, the fifth positioning structure may also include a spline, etc.

[0099] In some embodiments, the take-up roller 4100 includes a collar 4140 fixed to the main shaft 4110, and a bushing fixed to the collar 4140, thereby axially positioning the bushing. (Refer to...) Figure 7 In some embodiments, the first bushing 4120 is fixed to the collar 4140 by screw fasteners.

[0100] Reference Figure 6 In some embodiments, the winding assembly includes a second clutch 4300, and a second driver 4200 is drivenly connected to the winding roller 4100 via the second clutch 4300. The second clutch 4300 may also be a magnetic powder clutch, and a belt drive may be used between the second driver 4200 and the second clutch 4300.

[0101] In some embodiments, the winding assembly includes a counter 4400 for detecting the number of turns of the tape. In some embodiments, the film winding device includes a display screen, and the counter 4400 is communicatively connected to the display screen, which displays the current number of turns in real time, facilitating the tracking and monitoring of the experimental process.

[0102] In some embodiments, the film winding apparatus includes a web-correcting assembly, which includes a web-correcting stage 5100, a third driver, and a web-correcting detector 5200. The winding assembly and the web-correcting detector 5200 are mounted on the web-correcting stage 5100. The web-correcting detector 5200 is located upstream of the winding assembly. The web-correcting detector 5200 is used to detect the axial offset of the strip on the spindle 4110. The third driver can drive the web-correcting stage 5100 to move axially in response to the offset of the strip in order to perform web correction.

[0103] exist Figure 6 In one embodiment, the deviation correction detector 5200 employs a photoelectric sensor. The photoelectric sensor includes a transmitter and a receiver arranged opposite each other. The material strip passes between the transmitter and the receiver. The position of the material strip is determined by whether it blocks the light signal emitted by the transmitter, thereby performing deviation correction. In other embodiments, the deviation correction detector 5200 may also employ a camera, which captures images of the material strip edge in real time, analyzes and predicts the deviation trend of the material strip, and thus performs deviation correction.

[0104] In some embodiments, the film winding apparatus includes a tensioning assembly, which includes a guide roller 6100 located between the unwinding assembly and the take-up assembly. The guide roller 6100 is used to press against the film filaments. The guide roller 6100 tensions the roll of film filaments, thereby ensuring that the film filaments are wound onto the take-up roller 4100 in a state that meets design requirements.

[0105] The tensioning assembly may include multiple guide rollers 6100, the surface of which may have a protective layer to prevent damage to the passing material belt. For example, the guide rollers 6100 may be sponge rollers.

[0106] In some embodiments, the tensioning assembly includes a pressure sensor 6200 and a controller 6300. The pressure sensor 6200 is connected to the guide roller 6200 and is used to detect the force exerted by the film filament on the guide roller 6200. The pressure sensor 6200 is communicatively connected to the controller 6300, which can adjust the driving speed of the first driver and / or the second driver 4200 in response to changes in the force on the guide roller 6100. That is, when the tension is too high, the unwinding speed is made greater than the winding speed to release more material roll faster; conversely, when the tension is too low, the winding speed is made greater than the unwinding speed to wind up excess material roll faster, thereby compensating for changes in tension.

[0107] For example, refer to Figure 6 In some embodiments, the tensioning assembly includes a roller holder 6400, on which rollers 6100 are mounted. Three rollers 6100 are spaced apart in the conveying direction of the belt, with the middle roller 6100 located on one side of the belt and the other two rollers 6100 located on the other side, thereby applying pressure to the belt. A pressure sensor 6200 is connected to the middle roller 6100 to detect pressure changes caused by variations in belt tension.

[0108] In addition, the tensioning assembly can also compensate for tension through the movement of the guide roller 6100. That is, the guide roller 6100 changes the conveying path of the roll by increasing or decreasing its movement, thereby buffering or releasing the roll. When the tension is too high, the guide roller 6100 releases the roll to compensate; when the tension is too low, the guide roller buffers the roll to compensate. The movement of the guide roller 6100 can be controlled by a component capable of applying a constant force to maintain a constant tension; for example, a cylinder can be used.

[0109] In some embodiments, the controller 6300 can also adjust the winding speed of the second driver 4200 in response to changes in the winding radius, thereby keeping the winding linear speed stable. Specifically in Figure 6 In this embodiment, the controller 6300 is divided into a first control unit and a second control unit. The first control unit is responsible for adjusting the unwinding speed of the first driver in response to changes in the force on the guide roller 6200, and the second control unit adjusts the winding speed of the second driver 4200 in response to changes in the winding radius. During operation, the second control unit first performs an open-loop preliminary adjustment of the tension, and then the first control unit performs a closed-loop precise adjustment of the tension.

[0110] The membrane winding method and the membrane winding apparatus provided in this application are used according to the membrane winding method provided in this application.

[0111] Reference Figure 8 The membrane winding method includes the following steps:

[0112] Step S100: Install the oxygenator's membrane filament sleeve 9000 on the membrane roll winding fixture;

[0113] Step S200: The end cap is switched to the second state so that the outer ring avoids the winding area of ​​the membrane fibers;

[0114] Step S300: The membrane winding fixture rotates along the axis to wind the membrane filaments into a membrane roll;

[0115] Step S400: Switch the end cap to the first state to reset the outer ring, press down on the outer periphery of the membrane roll and fix the membrane roll.

[0116] The membrane winding method provided in this application uses the membrane roll winding fixture provided in this application, and therefore has the beneficial effects provided by the membrane roll winding fixture, which will not be elaborated here.

[0117] In some embodiments, step S100 further includes inserting a film roll winding fixture equipped with a film filament sleeve 9000 into a take-up roller 4100. Specifically, firstly, a collar 4140 is installed on the main shaft 4110, then a first bushing 4120, a film roll winding fixture equipped with a film filament sleeve 9000, and a second bushing 4130 are sequentially inserted into the main shaft 4110, and finally the second bushing 4130 is tightened with a nut to complete the installation.

[0118] In some embodiments, during the winding of the membrane filaments, the axial position of the membrane winding fixture is adjusted to correct the deviation of the membrane filaments.

[0119] Referring to the previous description, the axial position of the film roll winding fixture can be adjusted using the 5100 alignment table.

[0120] In some embodiments, during the winding of the membrane filaments, at least one of the following methods is used to control the tension of the membrane filaments:

[0121] Adjust the winding speed of the film roll winding fixture;

[0122] Adjust the feeding speed of the membrane fibers;

[0123] Adjust the length of the membrane fiber transport path.

[0124] Referring to the previous description, the winding speed and / or feeding speed can be adjusted by the controller 6300, and the length of the film filament conveying path can be adjusted by the movable guide roller 6100.

[0125] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0126] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order shown in the operation diagrams. For example, depending on the functions / operations involved, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of this application are provided by way of example to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and sub-operations described as part of a larger operation are executed independently.

[0127] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A film roll winding fixture, characterized in that, include: An end cap is provided for mounting at at least one axial end of a membrane fiber sleeve. The end cap has a shaft hole for passing through a rotating shaft along the axial direction. The end cap includes an outer ring portion and has a first state and a second state. In the first state, part or all of the outer ring portion surrounds the sidewall of the membrane fiber sleeve. In the second state, the outer ring portion exposes the sidewall of the membrane fiber sleeve.

2. The film roll winding fixture according to claim 1, characterized in that, The end cap includes at least one of the following to switch between the first state and the second state: The outer ring portion is detachably installed in the end cap; The outer ring portion is movably installed in the end cap; The outer ring is made of a flexible, deformable material.

3. The film roll winding fixture according to claim 1, characterized in that, The membrane roll winding fixture includes two end caps, which are respectively used to install at both ends of the membrane filament sleeve.

4. The film roll winding fixture according to claim 1, characterized in that, The outer ring can be flipped away from the membrane filament sleeve.

5. The film roll winding fixture according to claim 4, characterized in that, The outer ring portion is made of a flexible and deformable material. The outer ring portion defines a non-outer ring portion in the end cap. A weakening groove is provided at the junction of the outer ring portion and the non-outer ring portion.

6. The film roll winding fixture according to claim 1, characterized in that, The end cap includes an inner ring portion connected to the outer ring portion. The inner ring portion is used to be installed on the membrane filament sleeve, and the shaft hole is formed in the inner ring portion.

7. The film roll winding fixture according to claim 6, characterized in that, The end cap includes one or more connecting portions, the outer edge of which is connected to the outer ring portion, and the inner edge of which is connected to the inner ring portion.

8. The film roll winding fixture according to claim 1, characterized in that, The end cap includes an extension section that abuts against the end of the membrane fiber sleeve. The outer diameter of the extension section is the same as the outer diameter of the membrane fiber sleeve to allow the extension section to carry the membrane roll.

9. The film roll winding fixture according to claim 8, characterized in that, The end cap includes a third positioning structure, which is connected to the membrane fiber sleeve. The third positioning structure is used to improve the coaxiality of the extension section and the membrane fiber sleeve.

10. A membrane winding device, characterized in that, It includes an unwinding assembly and a winding assembly arranged in sequence, wherein the winding assembly includes the film roll winding fixture according to any one of claims 1 to 9.

11. The film winding apparatus according to claim 10, characterized in that, The unwinding assembly includes an unwinding roller and a first driver. The unwinding roller is used to carry the roll of film filaments. The first driver is used to drive the unwinding roller to rotate to release the film filaments. The winding assembly includes a winding roller and a second driver. The film roll winding fixture is mounted on the winding roller. The second driver is used to drive the winding roller to rotate to wind the film filaments.

12. The film winding apparatus according to claim 11, characterized in that, The film winding device includes a web-correcting assembly, which includes a web-correcting table, a third driver, and a web-correcting detector. The winding assembly and the web-correcting detector are mounted on the web-correcting table. The web-correcting detector is located upstream of the winding assembly. The web-correcting detector is used to detect the axial offset of the material strip on the winding roller. The third driver is capable of driving the web-correcting table to move axially in response to the offset of the material strip to perform web correction.

13. The film winding apparatus according to claim 11, characterized in that, The film winding device includes a tensioning assembly, which includes a guide roller located between the unwinding assembly and the winding assembly, and the guide roller is used to press against the film filaments.

14. The film winding apparatus according to claim 13, characterized in that, The tensioning assembly includes a pressure sensor and a controller. The pressure sensor is connected to the guide roller and is used to detect the force exerted by the membrane fibers on the guide roller. The pressure sensor is communicatively connected to the controller, which can adjust the driving speed of the first driver and / or the second driver in response to changes in the force on the guide roller.

15. The film winding apparatus according to claim 11, characterized in that, The film winding device includes a tensioning assembly, which includes a controller that can adjust the winding speed of the second driver in response to changes in the winding radius.

16. A membrane winding method, characterized in that, The membrane winding method uses the membrane winding apparatus according to any one of claims 10 to 15, and the membrane winding method includes the following steps: Install the membrane filament sleeve of the oxygenator on the membrane roll winding fixture; The end cap is switched to the second state so that the outer ring avoids the winding area of ​​the membrane fibers; The membrane winding fixture rotates along the axis to wind the membrane filaments into a membrane roll; The end cap is switched to the first state to reset the outer ring portion, press down on the outer periphery of the membrane roll and fix the membrane roll.

17. The film winding method according to claim 16, characterized in that, During the winding of the membrane filaments, the axial position of the membrane winding fixture is adjusted to correct the deviation of the membrane filaments.

18. The film winding method according to claim 16, characterized in that, During the winding of the membrane fibers, the tension of the membrane fibers is controlled using at least one of the following methods: Adjust the winding speed of the film roll winding fixture; Adjust the feeding speed of the membrane fibers; Adjust the length of the transport path of the membrane filaments.

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