Knitting equipment and knitting method

Abstract

The invention provides knitting equipment and a knitting method. The knitting equipment comprises a rack; the unwinding mechanism is arranged on the rack and comprises a first unwinding part and a second unwinding part, the first unwinding part is used for unwinding a first target object, and the second unwinding part is used for unwinding a second target object; the knitting mechanism is arranged on the rack and used for knitting the first target object and the second target object; the monitoring mechanism comprises a margin monitoring unit and a control unit, and the margin monitoring unit is used for monitoring the knitting margin of the first target object; the control unit is used for controlling start and stop of the first unwinding part according to the knitting allowance of the first target object. When the knitting equipment is used for knitting, the knitting allowance of the first target object can be controlled within a reasonable range, the problem that the tension of the first target object is too large due to the fact that the knitting allowance is too small is solved, the problem that the first target object is wound due to the fact that the knitting allowance is too large is also solved, the continuity of the whole knitting process can be effectively ensured, and the knitting efficiency is improved. And the weaving quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device manufacturing, and in particular to a weaving device and a weaving method for filtering or gas-liquid exchange. Background Art

[0002] Compared with hollow fiber membranes and spiral membranes, hollow fiber membranes have mature technology and simple component structure, and have a large specific surface area under the same volume. They are used in special fields such as water treatment filters, artificial kidneys, and artificial lungs.

[0003] Hollow fiber membranes have uneven fluid distribution during the preparation process. How to ensure that the liquid can flow evenly in the hollow fiber membrane components without dead corners is very important, which has become a difficult problem in the industry. Therefore, it is particularly important to arrange the membrane fibers before casting the components so that thousands of hollow fiber membrane fibers are evenly distributed.

[0004] In the prior art, when preparing hollow fiber membranes into components, one possible method is to weave the hollow fiber membrane filaments into a sheet-like woven structure in advance and then assemble them into components. However, in the process of weaving the hollow fiber membrane filaments into sheets, how to ensure that the hollow fiber membrane filaments are not entangled or broken has always been a difficult problem in the industry. Summary of the invention

[0005] The object of the present invention is to provide a weaving device and a weaving method, aiming to enable hollow fiber membrane filaments to be continuously weaved to form a sheet-like weaving structure.

[0006] To achieve the above-mentioned object, the present invention provides a weaving device, comprising: a frame, an unwinding mechanism, a weaving mechanism and a monitoring mechanism;

[0007] The unwinding mechanism is arranged on the frame, and comprises a first unwinding part and a second unwinding part, wherein the axial direction of the first unwinding part is perpendicular to the horizontal first direction, the first unwinding part is used to unwind the first target object, and the second unwinding part is located at the top of the braiding device and is used to unwind the second target object;

[0008] The weaving mechanism is arranged on the frame and is used for weaving the first target object and the second target object; and,

[0009] The monitoring mechanism includes a remainder monitoring unit and a control unit, wherein the remainder monitoring unit is configured to monitor the weaving remainder of the first target object; the control unit is communicated with the remainder monitoring unit and is configured to control the start and stop of the first unwinding section according to the weaving remainder of the first target object.

[0010] Optionally, the control unit is configured to control the first unwinding section to stop unwinding when the weaving allowance of the first target object reaches a first predetermined value, and to control the first unwinding section to unwind when the weaving allowance of the first target object reaches a second predetermined value; the second predetermined value is less than the first predetermined value.

[0011] Optionally, the braiding device further comprises a limiting back plate and a guide conveying assembly, wherein the limiting back plate is arranged on the frame and is perpendicular to the axial direction of the first unwinding portion, and the limiting back plate is located on a side of the first unwinding portion close to the braiding mechanism; the guide conveying assembly is arranged on the top of the limiting back plate, and the installation height of the guide conveying assembly is greater than the installation height of the first unwinding portion; the guide conveying assembly comprises a first guide conveying member and a second guide conveying member, and the first guide conveying member and the second guide conveying member are arranged along the first direction;

[0012] The first target object passes through the first guide conveyor and the second guide conveyor in sequence, and the portion of the first target object between the first guide conveyor and the second guide conveyor droops to form the lowest point of the droop;

[0013] A first predetermined height is set on the back plate, the first predetermined height is related to a first predetermined value of a weaving margin of the first target object, and the first predetermined height is lower than an installation height of the guide conveying assembly;

[0014] The margin monitoring unit includes a first height monitoring unit, and the first height monitoring unit is configured to monitor whether the knitting margin of the first target object reaches the first predetermined value by monitoring whether the lowest point of the first target object drooping reaches the first predetermined height.

[0015] Optionally, when the lowest point of the first target object drooping reaches the first predetermined height, the weaving margin of the first target object is equal to the first predetermined value;

[0016] The first height monitoring unit is arranged on the limiting back plate, and the installation height of the first height monitoring unit is a first predetermined height.

[0017] Optionally, the remaining amount monitoring unit further includes a duration monitoring unit, and the duration monitoring unit is used to monitor the duration of the first unwinding section stopping unwinding;

[0018] The control unit is configured to determine whether the duration of the first unwinding section stopping unwinding reaches a predetermined duration, and when the duration of the first unwinding section stopping unwinding reaches the predetermined duration, control the first unwinding section to start to unwind the first target object; when the duration of the first unwinding section stopping unwinding reaches the predetermined duration, the weaving allowance of the first target object reaches the second predetermined value.

[0019] Optionally, the remaining amount monitoring unit further includes a duration monitoring unit, and the duration monitoring unit is used to monitor the duration of the first unwinding section stopping unwinding;

[0020] The control unit is configured to calculate the weaving allowance of the first target object based on the duration of the first unwinding section stopping unwinding, the weaving speed of the weaving mechanism and the first predetermined value, and to determine whether the current weaving allowance of the first target object reaches the second predetermined value, and when the current weaving allowance of the first target object is equal to the second predetermined value, control the first unwinding section to start to unwind the first target object.

[0021] Optionally, a second predetermined height is set on the back plate, the second predetermined height is related to a second predetermined value of the weaving margin of the first target object, the second predetermined height is lower than the installation height of the guide conveying assembly, and higher than the first predetermined height;

[0022] The surplus monitoring unit further includes a second height monitoring unit, which is configured to monitor whether the knitting surplus of the first target object reaches the second predetermined value by monitoring whether the lowest point of the first target object drooping reaches the second predetermined height.

[0023] Optionally, when the lowest point of the first target object drooping reaches the second predetermined height, the weaving margin of the first target object is equal to the second predetermined value;

[0024] The second height monitoring unit is arranged on the limit back plate, and the installation height of the second height monitoring unit is the second predetermined height

[0025] Optionally, the difference between the second predetermined height and the installation height of the first height monitoring unit is 0.3m-0.8m.

[0026] Optionally, the difference between the first predetermined height and the installation height of the guide conveying assembly is 0.5m to 2m.

[0027] Optionally, the first guide conveying member includes a first shell, the first shell is provided with a first channel, a second channel and a third channel which are interconnected, the first channel, the second channel and the third channel are arranged in a Y-shaped structure; the first channel has a first opening, the second channel has a second opening, and the third channel has a third opening; the first opening and the second opening are both located above the third opening; the second opening is used to connect to an air source; the first target object passes through the first shell through the first opening and passes through the first shell through the third opening; and / or,

[0028] The second guide conveying member includes a second shell, and the second shell is provided with a fourth channel, a fifth channel, and a sixth channel that are interconnected, and the fourth channel, the fifth channel, and the sixth channel are arranged in a Y-shaped structure; the fourth channel has a fourth opening, the fifth channel has a fifth opening, and the sixth channel has a sixth opening; the fourth opening and the fifth opening are both located below the sixth opening; the fourth opening is closer to the first guide conveying member than the fifth opening, and the fifth opening is used to communicate with an air source; the first target object penetrates into the second shell through the fourth opening and passes out of the second shell from the sixth opening.

[0029] Optionally, the first unwinding portion is located on one side of the weaving mechanism, and an installation height of the first unwinding portion is less than or equal to an installation height of the weaving mechanism, and an installation height of the guide conveying assembly is greater than an installation height of the weaving mechanism.

[0030] Optionally, the weaving device further comprises a tension control mechanism disposed on the frame, and the tension control mechanism is used to control the tension of the second target object.

[0031] Optionally, the tension control mechanism comprises a fixing portion, a guide shaft and at least one elastic member, the fixing portion is connected to the frame, the guide shaft and the fixing portion are arranged opposite to each other at two ends of the elastic member, and the axis of the guide shaft is perpendicular to the axis of the first unwinding portion; the surface of the guide shaft is used to contact the second target object; one end of each elastic member is connected to the fixing portion, and the other end is connected to the guide shaft;

[0032] The tension control mechanism is configured such that when the tension of the second target object is less than or equal to a predetermined tension, an acute angle is formed between the extension direction of the elastic member and a reference plane; when the tension of the second target object reaches the predetermined tension, the second target object drives the guide shaft to move so that the acute angle formed by the extension direction of the elastic member and the reference plane is reduced, and the elastic member stores elastic potential energy; the reference plane is perpendicular to the axis of the first unwinding portion.

[0033] Optionally, the elastic member includes a torsion spring; the tension control mechanism further includes a torque monitoring unit, which is disposed on the torsion spring and is used to monitor the torque applied to the torsion spring, and further monitor the tension of the second target object.

[0034] To achieve the above object, the present invention also provides a weaving method, comprising the following steps:

[0035] Unwinding the first target object and the second target object respectively;

[0036] Using a weaving mechanism to weave the first target object and the second target object to obtain a sheet-like weaving structure, wherein the weaving speed of the weaving mechanism is less than the unwinding line speed of the first target object;

[0037] The start and stop of a first unwinding section for unwinding the first target object is controlled according to the knitting margin of the first target object.

[0038] Optionally, the step of controlling the start and stop of the first unwinding section for unwinding the first target object according to the weaving margin of the first target object includes:

[0039] When the knitting margin of the first target object reaches a first predetermined value, controlling the first unwinding part to stop unwinding;

[0040] When the weaving margin of the first target object reaches a second predetermined value, the first unwinding portion is controlled to unwind; and the second predetermined value is smaller than the first predetermined value.

[0041] Optionally, a first height monitoring unit is used to monitor whether the knitting allowance of the first target object reaches the first predetermined value.

[0042] Optionally, a predetermined time is determined according to the second predetermined value, the unwinding line speed of the first unwinding section and the weaving speed, and when the duration of the first unwinding section stopping unwinding reaches the predetermined time, the weaving margin of the first target object reaches the second predetermined value; or,

[0043] calculating the weaving margin of the first target object according to the weaving speed, the duration of the first unwinding section stopping unwinding, and the first predetermined value, and judging whether the weaving margin of the first target object reaches the second predetermined value; or,

[0044] A second height monitoring unit is used to monitor whether the knitting allowance of the first target object reaches the second predetermined value.

[0045] Optionally, the braiding method further comprises controlling the tension of the second target object, which is implemented as follows: the second target object enters the braiding mechanism after passing through the tension control mechanism, and the tension control mechanism comprises a guide shaft for contacting the second target object;

[0046] When the tension of the second target object reaches a preset tension, the guide shaft moves to shorten the moving path of the second target object, thereby reducing the tension of the second target object.

[0047] Compared with the prior art, the knitting device and knitting method of the present invention have the following advantages:

[0048] The aforementioned weaving device includes a frame, a reeling mechanism, a weaving mechanism and a monitoring mechanism; wherein the reeling mechanism is arranged on the frame and includes a first reeling part and a second reeling part, the axial direction of the first reeling part is perpendicular to the horizontal first direction, the first reeling part is used to reel the first target object, and the second reeling part is located at the top of the weaving mechanism and is used to reel the second target object; the weaving mechanism is arranged on the frame and is used to weave the first target object and the second target object; the monitoring mechanism includes a surplus monitoring unit and a control unit, the surplus monitoring unit is arranged on the frame and is configured to monitor the weaving surplus of the first target object; the control unit is connected to the surplus monitoring unit in communication and is configured to control the start and stop of the first reeling part according to the weaving surplus of the first target object. The first target object is, for example, a hollow fiber membrane filament, and the second target object is a weaving yarn. In this way, the hollow fiber membrane filament can be woven into a sheet-like weaving structure using the weaving device. In actual work, the hollow fiber membrane filament has a weaving allowance, and the unwinding line speed of the first unwinding section is also controlled according to the weaving allowance of the hollow fiber membrane filament, which can effectively regulate the weaving allowance of the hollow fiber membrane filament, so that the weaving allowance of the hollow fiber membrane filament is maintained within an appropriate range. There will be no problem of excessive tension of the hollow fiber membrane filament due to lack of weaving allowance, and no problem of entanglement of the hollow fiber membrane filament due to excessive weaving allowance. As a result, the hollow fiber membrane filament can be woven continuously and effectively, and the quality of the obtained sheet-like weaving structure is improved.

[0049] Furthermore, the weaving device also includes a tension control mechanism for controlling the tension of the second target object to avoid weaving interruption caused by breakage of the second target object due to excessive tension, and to reduce the problem of poor fabric quality caused by uneven tension of the second target object. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention.

[0051] Figure 1 It is a schematic structural diagram of a hollow fiber membrane fabric woven by a weaving device provided according to an embodiment of the present invention;

[0052] Figure 2 is a front view of a knitting device provided according to an embodiment of the present invention;

[0053] Figure 3 is a side view of a knitting device provided according to an embodiment of the present invention;

[0054] Figure 4 is an enlarged schematic diagram of point A of the weaving device shown in 3;

[0055] Figure 5 is a rear view of a knitting device provided according to an embodiment of the present invention, showing a first height monitoring unit;

[0056] Figure 6 yes Figure 5 An enlarged schematic diagram of the braiding device provided at point B;

[0057] Figure 7 yes Figure 5 An enlarged schematic diagram of the braiding device provided at position C;

[0058] Figure 8 1 is a rear view of a weaving device provided according to an embodiment of the present invention, showing a first height monitoring unit and a second height monitoring unit.

[0059] [Description of reference numerals is as follows]:

[0060] 110-hollow fiber membrane, 111-parallel section, 112-fold section, 120-woven yarn, 1000-frame, 2000-unwinding mechanism, 2100-first unwinding section, 2200-second unwinding section, 3000-weaving mechanism, 4110-first height monitoring unit, 4111-first transmitting section, 4112-first receiving section, 4120-second height monitoring unit, 4121-second transmitting section, 4122- second receiving part, 5000-tension control mechanism, 5100-fixing part, 5200-guide shaft, 5300-elastic member, 6000-limiting back plate, 7000-guide conveying assembly, 7100-first guide conveying member, 7110-first opening, 7120-second opening, 7130-third opening, 7200-second guide conveying member, 7210-fourth opening, 7220-fifth opening, 7230-sixth opening, DETAILED DESCRIPTION

[0061] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, and only the components related to the present invention are shown in the figure instead of being drawn according to the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be a random change, and the component layout type may also be more complicated.

[0062] In addition, each embodiment of the following description has one or more technical features, but this does not mean that the user of the present invention must implement all the technical features in any embodiment at the same time, or can only implement part or all of the technical features in different embodiments separately. In other words, under the premise that implementation is possible, those skilled in the art can selectively implement part or all of the technical features in any embodiment according to the disclosure of the present invention and according to the design specifications or implementation requirements, or selectively implement a combination of part or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.

[0063] As used in this specification, the singular forms "one", "an", and "the" include plural objects, and the plural form "a plurality" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise, and the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be a connection between two elements or an interactive relationship between two elements. Relational terms such as the terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate or imply relative importance or implicitly indicate the number of technical features indicated. It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In order to make the purpose, advantages and features of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings. It should be noted that the drawings are all in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar components.

[0065] One of the purposes of the present invention is to provide a weaving device, which is used to weave a first target object and a second target object so that the first target object and the second target object together form a sheet-like weaving structure. The first target object and the second target object can be linear or filamentary objects, specifically, Figure 1 As shown, the first target object may be the hollow fiber membrane 110, and the second target object may be the braided yarn 120. This article will take the first target object being the hollow fiber membrane 110 and the second target object being the braided yarn 120 as an example for introduction, but those skilled in the art may modify the following description to adapt it to the case where the first target object is not the hollow fiber membrane 110 and the second target object is not the braided yarn 120.

[0066] In addition, the material of the hollow fiber membrane 110 includes but is not limited to at least one of polypropylene, polyethylene, polytetramethyl isopentene, polyethersulfone, polysulfone, polyester, polytetrafluoroethylene, and polyvinylidene fluoride. The material of the braided yarn 120 is polypropylene, polyester, nylon, or cotton. Initially, a plurality of braided yarns 120 together form a braided wire, and the specification of the braided wire is 10-100D, 12-300F.

[0067] Please refer to Figure 1 The hollow fiber membrane 110 includes a plurality of parallel segments 111 and a plurality of return segments 112. The plurality of parallel segments 111 are arranged radially (at Figure 1 The parallel segments 111 are arranged in a vertical direction (i.e., in the up-down direction) in sequence, and two radially adjacent parallel segments 111 are arranged in a weft direction (i.e., in the up-down direction). Figure 1 The two ends (laterally, i.e., left and right) of the parallel section 111 are connected by the folding section 112, and the two radially adjacent folding sections 112 are located at the two ends of the parallel section 111 in the weft direction. In other words, a single hollow fiber membrane filament 111 forms a continuous folding body. A plurality of the braided yarns 120 are arranged in sequence in the weft direction, and each of the braided yarns 120 is interwoven with all the parallel sections 111 in sequence in the radial direction, so that the hollow fiber membrane filament 110 will not spread out, and the hollow fiber membrane 110 and the braided yarns 120 together form the sheet-like braided structure. The distance between the two adjacent braided yarns 120 in the weft direction can be 2 mm to 10 mm. It should be understood that the width and length of the braided knitted structure can be set as needed. When the sheet-like knitted structure is used to prepare a hollow fiber membrane assembly, there is no need for casting and sealing, and there will be no glue leakage into the hollow fiber membrane filament.

[0068] Please refer to Figure 2 , Figure 3 and Figure 5The braiding device includes a frame 1000, a reeling mechanism 2000, a braiding mechanism 3000 and a monitoring mechanism (not marked in the figure). The reeling mechanism 2000 is arranged on the frame 1000 and includes a first reeling part 2100 and a second reeling part 2200. The first reeling part 2100 is axially aligned with a first horizontal direction (such as Figure 2 The first unwinding section 2100 is perpendicular to the first unwinding section 2100 (indicated by the arrow S in the figure), and the wound hollow fiber membrane filament 110 is provided on the first unwinding section 2100. The first unwinding section 2100 is used to unwind the hollow fiber membrane filament 110. The second unwinding section 2200 is located at the top of the weaving device, and preferably the axial direction of the second unwinding section 2200 is parallel to the first direction. The second unwinding section 2200 is used to unwind the braiding yarn 120. The weaving mechanism 3000 is used to weave the released hollow fiber membrane filament 110 and the braiding yarn 120, so that the hollow fiber membrane filament 110 and the braiding yarn 120 together form a sheet-like braiding structure as shown in 1. The monitoring mechanism includes a remainder monitoring unit and a control unit. The remainder monitoring unit is configured to monitor the braiding remainder of the hollow fiber membrane filament 110. The control unit is in communication connection with the remainder monitoring unit, and is configured to control the start and stop of the first unwinding section 2100 according to the weaving remainder of the hollow fiber membrane 110 .

[0069] In an embodiment of the present invention, the unwinding line speed of the first unwinding section 2100 is greater than the weaving speed of the weaving mechanism 3000. The weaving speed of the weaving mechanism 3000 can be characterized by the length of the hollow fiber membrane filament 1100 fed into the weaving mechanism 3000 per unit time. In this way, within a certain time period, the weaving allowance of the hollow fiber membrane filament 110 is the difference between the length of the hollow fiber membrane filament 110 released by the first unwinding section 2100 and the length of the hollow fiber membrane filament 110 fed into the weaving mechanism 3000 within this time period. In other words, the weaving allowance of the hollow fiber membrane filament 110 is jointly determined by the unwinding line speed of the first unwinding section 2100, the weaving speed of the weaving mechanism 3000, the unwinding time of the first unwinding section 2100, and the weaving time of the weaving mechanism 3000. For example, when the first unwinding section 2100 and the weaving mechanism 3000 are both running continuously, the weaving allowance of the hollow fiber membrane 110 gradually increases with the extension of the running time; when the first unwinding section 2100 stops running and the weaving mechanism 3000 continues running, the weaving allowance of the hollow fiber membrane 110 gradually decreases.

[0070] The hollow fiber membrane filament 110 has static electricity. If the braiding margin of the hollow fiber membrane filament 110 is too large, the released hollow fiber membrane filament 110 is prone to entanglement, and then breakage and other problems may occur. When the braiding margin of the hollow fiber membrane filament 110 is reduced to zero, if the braiding mechanism 3000 continues to weave, the tension of the hollow fiber membrane filament 110 will increase, which may also cause the hollow fiber membrane filament 110 to break or the sheet braiding structure to have uneven tightness. Reserving an appropriate braiding margin can ensure that the tightness of the hollow fiber membrane filament 110 is at the same level throughout the whole process of being weaved, which is a weaving difficulty in the industry. To this end, the control unit in the embodiment of the present invention controls the start and stop of the first unwinding section 2100 according to the weaving allowance of the hollow fiber membrane filament 110, which can effectively avoid the problem of the weaving allowance of the hollow fiber membrane filament 110 being too large or too small, thereby enabling the hollow fiber membrane filament 110 to be woven continuously and improving the quality of the obtained sheet-like woven structure 100.

[0071] In an embodiment of the present invention, the control unit is configured to control the first unwinding unit 2100 to stop unwinding when the braiding margin of the hollow fiber membrane 110 reaches a first predetermined value, and control the first unwinding unit 2200 to stop unwinding when the braiding margin of the hollow fiber membrane 110 reaches a second predetermined value. The second predetermined value is less than the first predetermined value.

[0072] Furthermore, the weaving equipment also includes a tension control mechanism 5000, which is arranged on the frame 1000 and is used to control the tension of the weaving yarn 120, so that the tension of each weaving yarn 120 is within an appropriate range, thereby avoiding the problem that the quality of the sheet weaving structure is affected by excessive tension of the weaving yarn 120, and further avoiding the problem that the weaving yarn 120 breaks due to excessive tension, thereby causing weaving interruption.

[0073] Combination Figures 2 to 4 The knitting mechanism 3000 includes a plurality of crochet needles, and the plurality of crochet needles are arranged in a horizontal direction. In this paper, the arrangement direction of the plurality of crochet needles is referred to as the first direction. In practice, the number of the crochet needles is Figure 1 The number of braiding yarns 120 shown corresponds to each other, and each hook needle is responsible for braiding the hollow fiber membrane filaments 110 and the braiding yarns 120 together on the corresponding warp threads.

[0074] Next, this article will describe the optional structure and working mode of the weaving device through specific embodiments.

[0075] <Example 1>

[0076] Please continue to refer to Figure 2 , Figure 3 and Figure 5 In the embodiment of the present invention, the first unwinding portion 2100 is disposed on one side of the braiding mechanism 3000, and the installation height of the first unwinding portion 2100 is less than or equal to the installation height of the braiding mechanism 3000. The installation height of the second unwinding portion 2200 is greater than the installation height of the braiding mechanism 3000. Preferably, the second unwinding portion 2200 is located directly above the braiding mechanism 3000.

[0077] To ensure that the hollow fiber membrane 110 can be smoothly fed into the braiding mechanism 3000, please refer to Figure 5 , the braiding device further includes a limiting back plate 6000 and a guide conveying assembly 7000. The limiting back plate 6000 is a solid plate body arranged perpendicular to the axial direction of the first unwinding part 2100. The limiting back plate 6000 is arranged on the frame 1000. The guide conveying assembly 7000 is arranged on the top of the limiting back plate 6000, and the installation height of the guiding conveying assembly 7000 is higher than the installation height of the first unwinding part 2100, and further higher than the installation height of the braiding mechanism 3000. The guiding conveying assembly 7000 includes a first guiding conveying member 7100 and a second guiding conveying member 7200, and the first guiding conveying member 7100 and the second guiding conveying member 7200 are arranged along the first direction. In the first direction, the first guiding conveying member 7100 is closer to the first unwinding part 2100 than the second guiding conveying member 7200. The hollow fiber membrane 110 released by the first unwinding portion 2100 first passes through the first guide conveying member 7100 , then passes through the second guide conveying member 7200 , and is then fed into the weaving mechanism 3000 .

[0078] Please refer to Figure 6 , the first guide conveying member 7100 can be a three-way structure. Specifically, the first conveying member 7100 includes a first shell (not marked in the figure), and the first shell is provided with a first channel, a second channel and a third channel that are interconnected. The first channel, the second channel and the third channel are arranged in a Y-shaped structure, and the first channel has a first opening 7110, the second channel has a second opening 7120, and the third channel has a third opening 7130. The first opening 7110 and the second opening 7120 are both located above the third opening 7130. Please refer to Figure 7The second guide conveying member 7200 may also be a three-way structure, which includes a second shell, and the second shell is provided with a fourth channel, a fifth channel and a sixth channel that are interconnected. The fourth channel, the fifth channel and the sixth channel are arranged in a Y-shaped structure, and the fourth channel has a fourth opening 7210, the fifth channel has a fifth opening 7220, and the sixth channel has a sixth opening 7230. The fourth opening 7210 and the fifth opening 7220 are both located below the sixth opening 7230, and the fourth opening 7210 is closer to the first guide conveying member 7100 than the fifth opening 7220.

[0079] The hollow fiber membrane 110 passes through the first opening 7110 into the first shell, passes through the third opening 7130 into the first shell, then passes through the fourth opening 7210 into the second shell, and passes through the sixth opening 7230 into the second shell. In other words, the hollow fiber membrane 110 is partially located between the first guide conveyor 7100 and the second guide conveyor 7200. When the hollow fiber membrane 110 has a braiding margin, the portion of the hollow fiber membrane 110 located between the first guide conveyor 7100 and the second guide conveyor 7200 hangs down.

[0080] Theoretically, the hollow fiber membrane 110 can move in the first shell under the action of gravity. However, when the braiding margin of the hollow fiber membrane 110 is small, the gravity of the part of the hollow fiber membrane 110 between the first guide conveyor 7100 and the second guide conveyor 7200 is small, which may not be enough to drive the hollow fiber membrane 110 to move smoothly in the first shell, and it is also easy to cause the hollow fiber membrane 110 to get stuck or even break. In view of this, the second opening 7120 is used to connect to an external air source. In this way, the airflow provided by the external air source can be used to provide a driving force to drive the hollow fiber membrane 110 to move in the first shell. In addition, the fifth opening 7220 is also connected to the external air source to provide an airflow through the external air source to provide a driving force to the hollow fiber membrane 110, and drive the hollow fiber membrane 110 to move smoothly in the second shell.

[0081] Please refer back to Figure 5 The margin monitoring unit includes a first height monitoring unit 4110, and the first height monitoring unit 4110 is used to monitor whether the weaving margin of the hollow fiber membrane 110 reaches the first predetermined value.

[0082] The portion of the hollow fiber membrane 110 located between the first guide conveyor 7100 and the second guide conveyor 7200 has a lowest point due to drooping, and the height of the lowest point is directly related to the weaving allowance of the hollow fiber membrane 110. Specifically, the greater the height of the lowest point, the smaller the weaving allowance of the hollow fiber membrane 110, and the smaller the height of the lowest point, the greater the weaving allowance of the hollow fiber membrane 110. Thus, a first predetermined height can be determined according to the first predetermined value, and the first predetermined height is lower than the installation height of the guide conveyor 7000. When the weaving allowance of the hollow fiber membrane 110 is equal to the first predetermined value, the lowest point reaches the first predetermined height; when the weaving allowance of the hollow fiber membrane 110 is greater than the first predetermined value, the lowest point is lower than the first predetermined height, so that the hollow fiber membrane 110 is partially located below the first predetermined height. When the braiding margin of the hollow fiber membrane 110 is less than the first predetermined value, the lowest point is higher than the first predetermined height, that is, the hollow fiber membrane 110 is higher than the first predetermined height.

[0083] Therefore, the first height monitoring unit 4110 can monitor whether the braiding allowance of the hollow fiber membrane 110 reaches the first predetermined value by monitoring whether the lowest point of the sagging of the hollow fiber membrane 110 reaches the first predetermined height.

[0084] Optionally, the first height monitoring unit 4110 is disposed on the limiting back plate 6000, and its installation height is the first predetermined height. The first height monitoring unit 4110 is used to directly monitor whether the lowest point of the hollow fiber membrane 110 drooping reaches the position corresponding to the first predetermined height. In an optional implementation, Figure 5 As shown, the first height monitoring unit 4110 includes a split first transmitting unit 4111 and a first receiving unit 4112, wherein the first transmitting unit 4111 and the second receiving unit 4112 are arranged along the first direction and are preferably arranged on opposite sides of the guide conveying assembly 7000. The first transmitting unit 4111 is used to transmit a target signal, and the first receiving unit 4112 is used to receive the target signal transmitted by the first transmitting unit 4111. The target signal is, for example, infrared light, ultrasonic wave, etc.

[0085] When the braiding allowance of the hollow fiber membrane 110 is less than the first predetermined value, the hollow fiber membrane 110 is located above the first height monitoring unit 4110, and the first receiving unit 4112 receives the target signal emitted by the first transmitting unit 4111. When the braiding allowance of the hollow fiber membrane 110 is greater than or equal to the first predetermined value, the hollow fiber membrane 110 partially passes between the first transmitting unit 4111 and the first receiving unit 4112, and blocks the propagation of the target signal emitted by the first transmitting unit 4111, so that the target signal cannot be propagated to the first receiving unit 4112, and the first receiving unit 4112 cannot receive the target signal. In other words, in this embodiment, it can be judged whether the braiding allowance of the hollow fiber membrane 110 reaches the first predetermined value based on whether the first receiving unit 4112 receives the target signal, and when the first receiving unit 4112 cannot receive the target signal, the control unit controls the first unwinding unit 2100 to stop unwinding. That is, the first height monitoring unit 4110 monitors the critical stop point of the first unwinding section 2100 by monitoring the relationship between the lowest point and the first predetermined height.

[0086] Alternatively, the first transmitting part is integrated with the first receiving part (not shown in the figure). Thus, viewed in the first direction, the first height monitoring unit may be arranged on one side of the guide conveying assembly. When the weaving allowance of the hollow fiber membrane filament is less than the first predetermined value, the hollow fiber membrane filament is located above the first height monitoring unit, which will not block the target signal emitted by the first transmitting part, so the target signal is emitted in a direction away from the first transmitting part, and the first receiving part cannot receive the target signal. When the weaving allowance of the hollow fiber membrane filament reaches the first predetermined value, the hollow fiber membrane filament is partially located on one side of the first height monitoring unit, the target signal emitted by the first reflecting part is blocked and reflected by the hollow fiber membrane filament, and the first receiving part receives the target signal reflected by the hollow fiber membrane filament.

[0087] It should be noted that since the limiting back plate 6000 is a solid plate, the part of the hollow fiber membrane 110 located between the first guide conveying member 7100 and the second guide conveying member 7200 cannot swing in the direction perpendicular to the limiting back plate 6000. This ensures that when the weaving allowance of the hollow fiber membrane 110 is greater than the first predetermined value, the hollow fiber membrane 110 can effectively block the target signal.

[0088] In addition, according to actual conditions, the difference between the first predetermined height and the installation height of the guide conveying assembly 7000 should be within a suitable range, which can generally be 0.5m to 2m. If the difference between the first predetermined height and the installation height of the guide conveying assembly 7000 is greater than 2m, the hollow fiber membrane 110 is prone to entanglement and curling. If the difference between the first predetermined height and the installation height of the guide conveying assembly 7000 is less than 0.5m, the control reaction time of the control unit is extremely high, and even the control unit cannot control the first unwinding part 2100 to stop unwinding in time.

[0089] Optionally, after the first unwinding section 2100 stops unwinding, the remainder monitoring unit also indirectly monitors the weaving remainder of the hollow fiber membrane 110 by monitoring the duration of the first unwinding section 2100 stopping unwinding.

[0090] Specifically, the remaining amount monitoring unit further includes a duration monitoring unit (not shown in the figure), which is used to monitor the duration of the first unwinding unit 2100 stopping unwinding. The duration monitoring unit can be a timer, which is used to start timing when the first unwinding unit 2100 stops unwinding, and stop timing when the first unwinding unit 2100 restarts to unwind again.

[0091] A predetermined duration is pre-stored in the control unit, and the control unit is in communication connection with the duration monitoring unit, and is configured to determine whether the duration of the first unwinding section 2100 stopping unwinding reaches the predetermined duration, and when the duration of the first unwinding section 2100 stopping unwinding reaches the predetermined duration, control the first unwinding section 2100 to restart to unwind the hollow fiber membrane 110. The predetermined duration is calculated based on the unwinding line speed of the first unwinding section 2100, the weaving speed of the weaving mechanism 3000, and the second predetermined value, so that when the duration of the first unwinding section 2100 stopping unwinding reaches the predetermined duration, the weaving margin of the hollow fiber membrane 110 reaches the second predetermined value.

[0092] Typically, when the braiding margin of the hollow fiber membrane 110 reaches the second predetermined value, the lowest point of the hollow fiber membrane 110 between the first guide conveyor 7100 and the second guide conveyor 7200 is at a second predetermined height, and the difference between the second predetermined height and the first predetermined height is 0.3m to 0.8m. In this case, if the unwinding line speed of the first unwinding section 2100 is less than or equal to 30m / min, the predetermined time length may be 1s to 10s.

[0093] Furthermore, the knitting device further includes a combing mechanism (not marked in the figure), which is arranged between the tension control mechanism 5000 and the second unwinding part 2200, and is used to disperse the multiple knitting yarns 120 released by the second unwinding part 2200, so that the multiple knitting yarns 120 are separated. The specific structure of the combing mechanism can refer to the prior art and is not described in detail here.

[0094] Please refer to Figure 4 The tension control mechanism 5000 includes a fixing portion 5100, a guide shaft 5200 and at least one elastic member 5300. The fixing portion 5100 is connected to the frame 1000 and remains relatively stationary with the frame 1000. The guide shaft 5200 and the fixing portion 5100 are arranged opposite to each other at two ends of the elastic member 5300, and the axis of the guide shaft 5200 is perpendicular to the axis of the first unwinding portion 2100 and parallel to the axial direction of the second unwinding portion 2200 (that is, the axis of the guide shaft 5200 is parallel to the limiting back plate 6000), and the surface of the guide shaft 5200 is used to contact the braided yarn 120. One end of each elastic member 5300 is connected to the fixing portion 5100, and the other end is connected to the guide shaft 5200. Thus, one end where the guide shaft 5300 is located is the free end of the tension control mechanism 5000.

[0095] The tension control mechanism 5000 is arranged between the braiding mechanism 3000 and the second unwinding part 2200. The braiding yarn 120 released by the second unwinding part 2200 is fed into the braiding mechanism 5000 after passing through the tension control mechanism 5000. A reference plane is defined, and the reference plane is perpendicular to the axis of the first unwinding part 2100, that is, the reference plane is parallel to the limiting back plate 6000, or the reference plane is parallel to the axial direction of the second unwinding part 2200. When the tension of the braiding yarn 120 is less than or equal to the predetermined tension, an acute angle α is formed between the extension direction of the elastic member 5300 and the reference plane. When the tension of the braiding yarn 120 is greater than the predetermined tension, the braiding yarn 120 drives the guide shaft 5300 to move, so that the angle of the acute angle α formed by the extension direction of the elastic member 5300 and the reference plane is reduced, which shortens the moving path of the braiding yarn 120, thereby reducing the tension of the braiding yarn 120. The extending direction of the elastic member 5300 refers to the extending direction of the connection line between the two ends of the elastic member 5300 .

[0096] Optionally, the tension control mechanism 5000 may further include a tension monitoring unit (not shown in the figure), and the tension monitoring unit is preferably connected to a display device for communication. The tension monitoring unit can quantitatively obtain the tension value of the braided yarn 120, and the display device is used to display the tension value of the braided yarn 120. In practice, the tension of the braided yarn 120 is expected to be between 0-5N. In some cases, after the control of the tension control mechanism 5000, the tension of the braided yarn 120 may still be greater than 5N. At this time, the operator can intuitively understand the tension value of the braided yarn 120 through the display device, and judge whether it is necessary to perform an intervention operation according to the actual situation.

[0097] In an optional implementation, the elastic member 5300 includes a torsion spring, and there is a quantitative relationship between the torque applied to the torsion spring and the tension of the braided yarn 120. The tension monitoring unit is, for example, a torque sensor, which is disposed on the torsion spring and is used to monitor the torque applied to the torsion spring, and the tension of the braided yarn 120 can be obtained based on the quantitative relationship.

[0098] It should be noted that when the elastic member 5300 includes a torsion spring, the torsion spring includes a spring body 5310 and two torsion arms 5320 connected to the spring body 5310, and the two torsion arms 5320 are parallel to each other. One end of one of the torsion arms 5320 away from the spring body 5310 is connected to the fixing portion 5100, and the other end of the torsion arm 5320 away from the spring body 5310 is connected to the guide shaft 5200. The extension direction of the elastic member 5300 refers to the extension direction of the two torsion arms 5320.

[0099] In addition, when the number of the braided yarns 120 is small, the number of the tension control mechanism 5000 may be one, and it may include a plurality of elastic members 5300, and the plurality of elastic members 5300 are arranged at intervals along the axial direction of the guide shaft 5200. When the number of the braided yarns 120 is large, the number of the tension control mechanism 5000 is preferably multiple, and the plurality of tension control mechanisms 5000 are arranged in sequence along the axial direction of the guide shaft 5200, and each tension control mechanism 5000 is used to control the tension of at least one braided yarn 120.

[0100] The components included in the weaving mechanism 3000 and the arrangement of each component can be referred to the prior art and will not be described in detail here.

[0101] <Example 2>

[0102] The hardware structure of the knitting device provided in this embodiment is the same as that of the knitting device provided in the first embodiment, and the difference lies in the configuration of the control unit.

[0103] In this embodiment, the control unit does not pre-store the predetermined time length, but is configured to calculate the weaving allowance of the hollow fiber membrane filament 110 in real time according to the duration of the first unwinding section 2100 stopping unwinding, the first predetermined value and the weaving speed of the weaving mechanism 3000, and judge whether the current weaving allowance of the hollow fiber membrane filament 110 reaches the second predetermined value, and then determine whether it is necessary to restart the first unwinding section 2100 according to the judgment result.

[0104] <Example 3>

[0105] The difference between this embodiment and the first and second embodiments is that a second predetermined height is set on the back plate 6000, and the second predetermined height is related to the second predetermined value of the braiding margin of the hollow fiber membrane filament 110, and the second predetermined height is lower than the installation height of the guide conveying assembly 7000, and higher than the first predetermined height. The margin monitoring unit also includes a second height monitoring unit 4120, which monitors whether the braiding margin of the hollow fiber membrane filament 110 reaches the second predetermined value by monitoring whether the lowest point of the drooping of the hollow fiber membrane filament 110 reaches the second predetermined height. And the control unit is in communication connection with the second height monitoring unit 4120.

[0106] Specifically, please refer to Figure 8 When the lowest point of the hollow fiber membrane 110 droops reaches the second predetermined height, the braiding margin of the hollow fiber membrane 110 is the second predetermined value. The second height monitoring unit 4120 is disposed on the limiting back plate 6000, and the installation height of the second height monitoring unit 4120 is the second predetermined height.

[0107] In an optional implementation, the second height monitoring unit 4120 may include a split second transmitting unit 4121 and a split second receiving unit 4122, and the second transmitting unit 4121 and the second receiving unit 4122 are arranged along the first direction and are arranged on opposite sides of the guide conveying assembly 7000.

[0108] When the braiding margin of the hollow fiber membrane 110 is greater than or equal to the second predetermined value, the hollow fiber membrane 110 is partially located between the second transmitting part 4121 and the second receiving part 4122, and blocks the propagation of the target signal emitted by the second transmitting part 4121, so that the target signal cannot be propagated to the second receiving part 4122, and the second receiving part 4122 cannot receive the target signal. When the braiding margin of the hollow fiber membrane 110 is less than the second predetermined value, the hollow fiber membrane 110 is located above the second height monitoring unit 4110, and the second receiving part 4122 receives the target signal emitted by the second transmitting part 4121. That is, in this embodiment, it can be judged whether the braiding margin of the hollow fiber membrane 110 reaches the second predetermined value according to whether the second receiving part 4122 receives the target signal, and the control unit controls the first unwinding part 2100 to restart when the second receiving part 4112 can receive the target signal. In other words, the second height monitoring unit 4110 in this embodiment monitors the restart critical point of the first unwinding section 2100 by monitoring the relationship between the lowest point and the second predetermined height.

[0109] Alternatively, the second transmitting part is integrated with the second receiving part (not shown in the figure). Thus, viewed in the first direction, the second height monitoring unit may be arranged on one side of the guide conveying assembly. When the weaving allowance of the hollow fiber membrane filament is greater than the second predetermined value, the hollow fiber membrane filament is partially located on one side of the first height monitoring unit, the target signal emitted by the second reflecting part is blocked and reflected by the hollow fiber membrane filament, and the second receiving part receives the target signal reflected by the hollow fiber membrane filament. When the weaving allowance of the hollow fiber membrane filament is less than the second predetermined value, the hollow fiber membrane filament is located above the second height monitoring unit, which will not block the target signal emitted by the second transmitting part, so the target signal is emitted in a direction away from the second transmitting part, and the second receiving part cannot receive the target signal.

[0110] Furthermore, a second object of the present invention is to provide a knitting method based on the aforementioned knitting device. The knitting method comprises the following steps S100, S200, S300 and S400.

[0111] The step S100 includes unwinding the first target object by using the first unwinding unit 2100. The step S200 includes unwinding the second target object by using the second unwinding unit 2200. The step S300 includes weaving the first target object and the second target object by using the weaving mechanism 3000 to obtain a sheet-like weaving structure. The step S400 includes controlling the start and stop of the first unwinding unit 2100 according to the weaving margin of the first target object. The specific implementation method of each step can be referred to the above text and will not be repeated here.

[0112] It should be noted that the barrel installed on the first unwinding part 2100 includes a roller and the hollow fiber membrane 110, the hollow fiber membrane 110 is stacked and obliquely wound on the roller, and the hollow fiber membrane 110 has segments arranged on each layer, each segment is inclined relative to the axis of the roller, and the segments on two adjacent layers cross each other. The advantage of this is that it can prevent the hollow fiber membrane located on the roller from getting stuck and unable to be released.

[0113] Although the present invention is disclosed as above, it is not limited thereto. Those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A weaving device, characterized in that: include: Frame, unwinding mechanism, weaving mechanism and monitoring mechanism; The unwinding mechanism is arranged on the frame, and comprises a first unwinding part and a second unwinding part, wherein the axial direction of the first unwinding part is perpendicular to the horizontal first direction, the first unwinding part is used to unwind the first target object, and the second unwinding part is located at the top of the braiding device and is used to unwind the second target object; The weaving mechanism is arranged on the frame and is used for weaving the first target object and the second target object; and, The monitoring mechanism includes a remainder monitoring unit and a control unit, wherein the remainder monitoring unit is configured to monitor the weaving remainder of the first target object; the control unit is communicated with the remainder monitoring unit and is configured to control the start and stop of the first unwinding section according to the weaving remainder of the first target object.

2. The braiding device according to claim 1, characterized in that: The control unit is configured to control the first unwinding section to stop unwinding when the weaving allowance of the first target object reaches a first predetermined value, and to control the first unwinding section to unwind when the weaving allowance of the first target object reaches a second predetermined value; the second predetermined value is smaller than the first predetermined value.

3. The braiding device according to claim 2, characterized in that: The braiding device further comprises a limiting back plate and a guide conveying assembly, wherein the limiting back plate is arranged on the frame and is perpendicular to the axial direction of the first unwinding part, and the limiting back plate is located on a side of the first unwinding part close to the braiding mechanism; the guide conveying assembly is arranged on the top of the limiting back plate, and the installation height of the guide conveying assembly is greater than the installation height of the first unwinding part; the guide conveying assembly comprises a first guide conveying member and a second guide conveying member, and the first guide conveying member and the second guide conveying member are arranged along the first direction; The first target object passes through the first guide conveyor and the second guide conveyor in sequence, and the portion of the first target object between the first guide conveyor and the second guide conveyor droops to form the lowest point of the droop; A first predetermined height is set on the back plate, the first predetermined height is related to a first predetermined value of a weaving margin of the first target object, and the first predetermined height is lower than an installation height of the guide conveying assembly; The margin monitoring unit includes a first height monitoring unit, and the first height monitoring unit is configured to monitor whether the knitting margin of the first target object reaches the first predetermined value by monitoring whether the lowest point of the first target object drooping reaches the first predetermined height.

4. The braiding device according to claim 3, characterized in that: When the lowest point of the first target object drooping reaches the first predetermined height, the weaving margin of the first target object is equal to the first predetermined value; The first height monitoring unit is arranged on the limiting back plate, and the installation height of the first height monitoring unit is a first predetermined height.

5. The braiding device according to claim 3 or 4, characterized in that: The remaining amount monitoring unit further includes a duration monitoring unit, and the duration monitoring unit is used to monitor the duration of the first unwinding part stopping unwinding; The control unit is configured to determine whether the duration of the first unwinding section stopping unwinding reaches a predetermined duration, and when the duration of the first unwinding section stopping unwinding reaches the predetermined duration, control the first unwinding section to start to unwind the first target object; when the duration of the first unwinding section stopping unwinding reaches the predetermined duration, the weaving allowance of the first target object reaches the second predetermined value.

6. The braiding device according to claim 3 or 4, characterized in that: The remaining amount monitoring unit further includes a duration monitoring unit, and the duration monitoring unit is used to monitor the duration of the first unwinding part stopping unwinding; The control unit is configured to calculate the weaving allowance of the first target object based on the duration of the first unwinding section stopping unwinding, the weaving speed of the weaving mechanism and the first predetermined value, and to determine whether the current weaving allowance of the first target object reaches the second predetermined value, and when the current weaving allowance of the first target object is equal to the second predetermined value, control the first unwinding section to start to unwind the first target object.

7. The braiding device according to claim 3 or 4, characterized in that: A second predetermined height is set on the back plate, the second predetermined height is related to a second predetermined value of the weaving margin of the first target object, the second predetermined height is lower than the installation height of the guide conveying assembly and higher than the first predetermined height; The margin monitoring unit further includes a second height monitoring unit, which is configured to monitor whether the knitting margin of the first target object reaches the second predetermined value by monitoring whether the lowest point of the first target object drooping reaches the second predetermined height.

8. The braiding device according to claim 7, characterized in that: When the lowest point of the first target object drooping reaches the second predetermined height, the weaving margin of the first target object is equal to the second predetermined value; The second height monitoring unit is disposed on the limiting back plate, and the installation height of the second height monitoring unit is the second predetermined height. The second height monitoring unit is used to monitor whether the lowest point of the first target object reaches the second predetermined height.

9. The braiding device according to claim 7, characterized in that: The difference between the second predetermined height and the installation height of the first height monitoring unit is 0.3m-0.8m.

10. The braiding device according to claim 3 or 4, characterized in that: The difference between the first predetermined height and the installation height of the guide conveying assembly is 0.5m to 2m.

11. The braiding device according to claim 3, characterized in that: The first guide conveying member comprises a first shell, the first shell is provided with a first channel, a second channel and a third channel which are interconnected, and the first channel, the second channel and the third channel are arranged in a Y-shaped structure; The first channel has a first opening, the second channel has a second opening, and the third channel has a third opening; the first opening and the second opening are both located above the third opening; The second opening is used to connect to a gas source; The first target object passes through the first shell through the first opening and passes through the first shell through the third opening; and / or, The second guide conveying member includes a second shell, and the second shell is provided with a fourth channel, a fifth channel, and a sixth channel that are interconnected, and the fourth channel, the fifth channel, and the sixth channel are arranged in a Y-shaped structure; the fourth channel has a fourth opening, the fifth channel has a fifth opening, and the sixth channel has a sixth opening; the fourth opening and the fifth opening are both located below the sixth opening; the fourth opening is closer to the first guide conveying member than the fifth opening, and the fifth opening is used to communicate with an air source; the first target object penetrates into the second shell through the fourth opening and passes out of the second shell from the sixth opening.

12. The braiding device according to claim 3, characterized in that: The first unwinding portion is located at one side of the weaving mechanism, and the installation height of the first unwinding portion is less than or equal to the installation height of the weaving mechanism, and the installation height of the guide conveying assembly is greater than the installation height of the weaving mechanism.

13. The braiding device according to claim 1, characterized in that: The braiding device further comprises a tension control mechanism disposed on the frame, and the tension control mechanism is used to control the tension of the second target object.

14. The braiding device according to claim 13, characterized in that The tension control mechanism comprises a fixing part, a guide shaft and at least one elastic member, wherein the fixing part is connected to the frame, the guide shaft and the fixing part are arranged opposite to each other at two ends of the elastic member, and the axis of the guide shaft is perpendicular to the axis of the first unwinding part; the surface of the guide shaft is used to contact the second target object; one end of each elastic member is connected to the fixing part, and the other end is connected to the guide shaft; The tension control mechanism is configured such that when the tension of the second target object is less than or equal to a predetermined tension, an acute angle is formed between the extension direction of the elastic member and the reference plane; When the tension of the second target object reaches the predetermined tension, the second target object drives the guide shaft to move so that the acute angle formed by the extension direction of the elastic member and the reference plane is reduced, and the elastic member stores elastic potential energy; the reference plane is perpendicular to the axis of the first unwinding portion.

15. The braiding device according to claim 14, characterized in that The elastic member includes a torsion spring; the tension control mechanism further includes a torque monitoring unit, which is arranged on the torsion spring and is used to monitor the torque applied to the torsion spring, and further monitor the tension of the second target object.

16. A weaving method, characterized in that: The steps include: Unwinding the first target object and the second target object respectively; Using a weaving mechanism to weave the first target object and the second target object to obtain a sheet-like weaving structure, wherein the weaving speed of the weaving mechanism is less than the unwinding line speed of the first target object; The start and stop of a first unwinding section for unwinding the first target object is controlled according to the knitting margin of the first target object.

17. The knitting method according to claim 16, characterized in that: The step of controlling the start and stop of the first unwinding section for unwinding the first target object according to the knitting margin of the first target object comprises: When the knitting margin of the first target object reaches a first predetermined value, controlling the first unwinding part to stop unwinding; When the weaving margin of the first target object reaches a second predetermined value, the first unwinding portion is controlled to unwind; and the second predetermined value is smaller than the first predetermined value.

18. The knitting method according to claim 17, characterized in that: A first height monitoring unit is used to monitor whether the knitting margin of the first target object reaches the first predetermined value.

19. The knitting method according to claim 17, characterized in that: A predetermined time is determined according to the second predetermined value, the unwinding line speed of the first unwinding section and the weaving speed, and when the first unwinding section stops unwinding for the predetermined time, the weaving margin of the first target object reaches the second predetermined value; or, calculating the weaving margin of the first target object according to the weaving speed, the duration of the first unwinding section stopping unwinding, and the first predetermined value, and judging whether the weaving margin of the first target object reaches the second predetermined value; or, A second height monitoring unit is used to monitor whether the knitting allowance of the first target object reaches the second predetermined value.

20. The knitting method according to claim 16, characterized in that: The braiding method further includes controlling the tension of the second target object, which is implemented as follows: the second target object enters the braiding mechanism after passing through the tension control mechanism, and the tension control mechanism includes a guide shaft for contacting the second target object; When the tension of the second target object reaches a preset tension, the guide shaft moves to shorten the moving path of the second target object, thereby reducing the tension of the second target object.

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