Three-dimensional knitting tightening device, three-dimensional knitting device and knitting process

Abstract

The invention provides a three-dimensional weaving and tightening device, a three-dimensional weaving device and a weaving process, the three-dimensional weaving and tightening device comprises a mounting frame, and a plurality of mounting ports communicated with the inside and the outside of a frame opening are horizontally formed in a frame body along the plane where the frame opening is located in a penetrating manner; the plurality of wire tightening units are provided with wire penetrating holes and are arranged in the frame opening in a matrix mode according to rows and columns, the adjacent wire tightening units are movably spliced in the frame opening, and the plane where the hole opening of each wire penetrating hole is located is parallel to the plane where the frame opening is located; and the plurality of driving units are respectively and movably inserted into the plurality of mounting ports, and the power output end of each driving unit is respectively connected with the wire tightening units located at the edge of the matrix and is used for pushing the wire tightening units in each row to move in the row direction and the wire tightening units in each column to move in the column direction. The line tightening units in all rows and columns move according to the set path and force, it is ensured that each threading hole can achieve the ideal line tightening effect, manual intervention is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of three-dimensional weaving, and particularly relates to a three-dimensional weaving tight line device, a three-dimensional weaving device and a weaving process. BACKGROUND

[0002] Three-dimensional weaving has the advantages of complex structure near net forming, impact resistance, fatigue resistance and the like, and thus has been widely applied in the fields of aerospace and national defense and military industry. Moreover, the application of three-dimensional weaving has been no longer limited to these fields, and has gradually expanded to the fields of automobile, train, ship, wind power generation, sports equipment, life engineering and civil building and the like.

[0003] However, the production of three-dimensional weaving preforms at present mainly relies on manual tight line, which seriously restricts the production speed and increases the preparation cost of products. With the continuous expansion of the application field of three-dimensional weaving composite materials, the contradiction between large market demand and slow production speed, high cost and poor product performance stability is increasingly prominent, and manual tight line has become a bottleneck restricting the further development and application of three-dimensional weaving composite materials.

[0004] In view of this, the present application is proposed. SUMMARY

[0005] The present application aims to overcome the problem that the preparation of existing three-dimensional weaving preforms relies on manual tight line, and provides a three-dimensional tight line device with simple mechanical structure and strong universality, and proposes a design scheme and an operation method thereof.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the present application is as follows:

[0007] A three-dimensional weaving tight line device comprises:

[0008] A mounting frame, a plurality of mounting openings are horizontally and continuously provided on the frame body along the plane where the frame opening is located and communicate with the inside and outside of the frame opening;

[0009] A plurality of tight line units with threading holes are arranged in a matrix in the frame opening in rows and columns, and adjacent tight line units are movably spliced in the frame opening, and the plane where each threading hole is located is parallel to the plane where the frame opening is located;

[0010] A plurality of driving units are movably inserted into the plurality of mounting openings, and the power output ends of each driving unit are connected with the tight line units located at the edges of the matrix, for pushing each row of tight line units to move in the row direction and each column of tight line units to move in the column direction.

[0011] Further, the threading unit has a splicing part extending along a direction perpendicular to the central axis of the threading hole, and the splicing parts of adjacent threading units are movably spliced and movable along the direction in which the splicing part extends.

[0012] Further, the splicing part extends laterally along a direction perpendicular to the central axis of the threading hole to form a lateral splicing section, and extends along a direction perpendicular to the lateral splicing section to form a longitudinal splicing section, the lateral splicing sections of adjacent threading units are spliced to form a column of threading units, and the longitudinal splicing sections of adjacent threading units are spliced to form a row of threading units.

[0013] Preferably, the lateral splicing sections and the longitudinal splicing sections of the splicing part are connected end to end.

[0014] Preferably, at least two lateral splicing sections are parallel to each other and symmetric about the central axis of the threading hole, and at least two longitudinal splicing sections are parallel to each other and symmetric about the central axis of the threading hole.

[0015] Further, a plurality of mounting plates with through holes are stacked and arranged, and the through holes of each mounting plate are concentrically arranged to form the threading unit, and each through hole is stacked to form the threading hole of the threading unit, and the side parts of adjacent mounting plates of the threading unit are movably spliced.

[0016] Further, the mounting plate is a rectangular mounting plate, and the through hole on the rectangular mounting plate is eccentrically arranged, the center of each mounting plate and the center of each through hole are coplanarly arranged, and each adjacent mounting plate has a spacing, and the mounting plates and the spacing of adjacent threading units are spliced.

[0017] Further, the regions where the through holes of each adjacent mounting plate are located are stacked and arranged, the centers of each adjacent mounting plate are located on both sides of the central axis of the through hole, the centers of each adjacent mounting plate are located on the same side of the central axis of the through hole, and the side edges of each adjacent mounting plate are flushly arranged.

[0018] Further, a connecting hole is formed around the through hole of the mounting plate, a plurality of connecting holes of the mounting plate are concentrically arranged, a connecting member of the threading unit is arranged on the connecting hole of each mounting plate, and the plurality of mounting plates are connected together to form the threading unit.

[0019] Further, the driving unit is a driving rod structure, one end of which is arranged in the frame opening to form a power output end connected with the threading unit, and the other end passes through the mounting opening of the frame body and is movably arranged on the frame body.

[0020] Preferably, the power output end is a plurality of plug-in teeth extending along the axial direction of the driving rod and inserted into the spacing formed by the side plate of the threading unit.

[0021] The application further provides a three-dimensional braiding device, comprising a braiding base and a braiding port, and further comprising the three-dimensional braiding tensioning device according to any one of the above technical solutions, which is arranged between the braiding base and the braiding port, and the yarns are braided at the braiding port by passing through the threading holes of the three-dimensional braiding tensioning device from the braiding base;

[0022] Preferably, the three-dimensional braiding tensioning device is arranged close to the braiding port.

[0023] Preferably, the frame port of the mounting frame of the three-dimensional braiding tensioning device is arranged in parallel with the braiding base.

[0024] The application further provides a braiding process of the three-dimensional braiding device according to the above technical solution, wherein the yarns of each carrier of the braiding base are braided at the braiding port by passing through the threading holes of the three-dimensional braiding tensioning device, and in the braiding process, each row and column of the tensioning units of the three-dimensional braiding tensioning device moves synchronously with each carrier of the braiding base.

[0025] Compared with the prior art, the application has the following beneficial effects.

[0026] By the power output of the driving unit, the application can realize the accurate control of the tensioning units, and each row and column of the tensioning units moves according to the set path and force, thereby ensuring that each threading hole can achieve the ideal tensioning effect. That is, the automatic operation of the driving unit reduces the manual intervention, the automatic tensioning process improves the production efficiency, avoids the instability in the manual operation, and improves the consistency and accuracy of the tensioning.

[0027] The three-dimensional braiding tensioning device of the application has the advantages of accurate control, uniform tensioning, automatic operation, rapid adjustment and stable performance, and significantly improves the production quality and efficiency of the three-dimensional braiding preform, thereby overcoming the various shortcomings in the prior art and providing solid technical support for large-scale and high-quality production of three-dimensional braided composite materials.

[0028] The specific embodiments of the application are described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings are part of the application and serve to provide a further understanding of the application, and the illustrative embodiments of the application and the description thereof serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the accompanying drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creating any creative labor. In the drawings:

[0030] Figure 1 It is a schematic diagram of the assembly structure of the three-dimensional braiding tensioning device of the application.

[0031] Figure 2 Assembling structure schematic diagram of the tight line unit of the present application;

[0032] Figure 3 Assembling structure schematic diagram of the mounting frame of the present application;

[0033] Figure 4 Assembling structure schematic diagram of the driving unit of the present application;

[0034] Figure 5 Assembling structure schematic diagram of the three-dimensional weaving device of the present application;

[0035] Figure 6 Schematic diagram of initial position arrangement of yarns of the 4*18 three-dimensional woven plate of the present application;

[0036] Figure 7 Schematic diagram of initial position arrangement of yarns of the three-dimensional woven double-channel plate of the present application.

[0037] In the figure:

[0038] 1, tight line unit; 11, threading hole; 12, first mounting plate; 121, through hole; 122, connecting hole; 123, first side edge of the first mounting plate; 124, second side edge of the first mounting plate; 125, third side edge of the first mounting plate; 126, fourth side edge of the first mounting plate; 13, second mounting plate; 131, first side edge of the second mounting plate; 132, second side edge of the second mounting plate; 14, third mounting plate; 141, first side edge of the third mounting plate; 142, third side edge of the third mounting plate; 15, fourth mounting plate; 16, fifth mounting plate; 17, sixth mounting plate; 18, seventh mounting plate; 19, eighth mounting plate; 2, mounting frame; 21, first frame body; 22, second frame body; 23, third frame body; 24, fourth frame body; 25, mounting port; 3, driving unit; 31, power output end; 311, plug-in tooth; 312, clamping part; 32, movable end; 4, interval between the next adjacent mounting plates; 5, weaving base plate; 6, weaving port; 7, preform; 8, yarn.

[0039] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments will be described clearly and completely below in combination with the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0041] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0042] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Embodiment 1,

[0044] As Figures 1 to 4 , the present embodiment provides a three-dimensional braiding wire tightening device. The three-dimensional braiding wire tightening device comprises a wire tightening unit 1, a mounting frame 2, and a driving unit 3. A plurality of mounting openings 25 are provided on the frame body of the mounting frame 2 along the plane of the frame opening, and are horizontally connected between the inside and outside of the frame opening. A plurality of wire tightening units 1 with wire holes 11 are arranged in a matrix in the frame opening, and the adjacent wire tightening units 1 are movably spliced in the frame opening, and the plane of each wire hole 11 is parallel to the plane of the frame opening. A plurality of driving units 3 are movably inserted into the plurality of mounting openings 25, and the power output end 31 of each driving unit 3 is connected to the wire tightening unit 1 located at the edge of the matrix, for pushing each row of wire tightening units 1 to move in the row direction, and each column of wire tightening units 1 to move in the column direction.

[0045] Specifically as Figure 1 and Figure 3 shown, the mounting frame 2 is a rectangular frame, which includes first frame body 21, second frame body 22, third frame body 23 and fourth frame body 24 which are parallel to each other; the first frame body 21, the second frame body 22, the third frame body 23 and the fourth frame body 24 form a rectangular mounting frame 2. A plurality of mounting openings 25 are provided on the first frame body 21, the second frame body 22, the third frame body 23 and the fourth frame body 24, respectively.

[0046] The mounting holes 25 on the first frame 21 and the second frame 22 are arranged from one end close to the fourth frame 24 to one end close to the third frame 23 in sequence, and the mounting holes 25 on the first frame 21 and the second frame 22 correspond to each other, the center axes of the corresponding mounting holes 25 are the same, and are arranged in parallel with the fourth frame 24. The mounting holes 25 on the third frame 23 and the fourth frame 24 are arranged from one end close to the first frame 21 to one end close to the second frame 22 in sequence, and the mounting holes 25 on the third frame 23 and the fourth frame 24 correspond to each other, the center axes of the corresponding mounting holes 25 are the same, and are arranged in parallel with the first frame 21.

[0047] The plurality of tensioning units 1 are arranged in a matrix in the frame opening, the number of rows of the matrix corresponds to the number of mounting holes 25 on the third frame 23 / the fourth frame 24, and the tensioning units 1 at both ends of each row of the tensioning units 1 are connected with the driving units 3 on the mounting holes 25 of the third frame 23 and the fourth frame 24 respectively, and the driving units 3 on the third frame 23 and the fourth frame 24 drive each row of the tensioning units 1 to move in a row direction.

[0048] The number of columns of the matrix corresponds to the number of mounting holes 25 on the first frame 21 / the second frame 22, and the tensioning units 1 at both ends of each column of the tensioning units 1 are connected with the driving units 3 on the mounting holes 25 of the first frame 21 and the second frame 22 respectively, and the driving units 3 on the first frame 21 and the second frame 22 drive each column of the tensioning units 1 to move in a column direction. The yarn 8 passes through the threading hole 11 of each tensioning unit 1, and the driving units 3 drive the tensioning units 1 to move in a row direction and a column direction, thereby driving the yarn 8 to move in a row direction and a column direction synchronously.

[0049] The driving unit 3 can be an electric driving unit 3 or a pneumatic driving unit 3. For example, a motor is used to provide driving force, and the power output end 31 of the driving unit 3 moves in the axial direction through the rotational movement of the motor, so as to push the tensioning unit 1 to move. For another example, an air cylinder is used to provide driving force, and the piston moves through compressed air, thereby pushing the power output end 31 of the driving unit 3 to move in the axial direction.

[0050] In the embodiment, one yarn 8 is arranged in the threading hole 11 of each tensioning unit 1, and the yarn 8 is responsible for positioning and movement. The power output end 31 is connected with the tensioning unit 1, and pushes the tensioning unit 1 and the weaving base plate 5 to move in the same rule in a row direction and a column direction synchronously, so that the movement rule of the yarn 8 is transmitted from the weaving base plate 5 to the weaving opening 6. The synchronous movement mechanism ensures that the yarn 8 always maintains a consistent tensioning state in the entire weaving process, and avoids the problems of uneven tension and path deviation.

[0051] In this embodiment, the mounting frame 2 provides a firm support structure, each tight line unit 1 and the driving unit 3 are integrated on the mounting frame 2, which ensures the stability of the whole system, the tight line unit 1 is movably spliced in the frame opening, and the movement in the row and column directions is realized under the driving action of the driving unit 3.

[0052] As an embodiment of this embodiment, the splicing mode between adjacent tight line units 1 can be selected:

[0053] Mode one: the tight line unit 1 is provided with a magnetic component, and the adjacent tight line units 1 are magnetically connected through the magnetic component, that is, the adjacent tight line units 1 are spliced through magnetic force. The driving unit 3 provides driving force to push the tight line unit 1, and the tight line unit 1 overcomes the magnetic force to realize the movement in the row and column directions. Through this magnetic connection mode, the adjacent tight line units 1 can be reliably spliced together and flexibly moved under the action of the driving unit 3, which ensures the stable operation and easy operation of the device.

[0054] Mode two: the adjacent tight line units 1 are spliced through the mortise and tenon structure, that is, the mortise part of one tight line unit 1 is spliced with the tenon part of another adjacent tight line unit 1, and the mortise and tenon connection forms the movement track of the adjacent row or column tight line units 1, so that the tight line unit 1 can realize row and column movement.

[0055] Mode three: the tight line unit 1 has a splicing part outside the threading hole 11, which is arranged along a direction perpendicular to the central axis of the threading hole 11; preferably, the tight line unit 1 is alternately provided with a splicing groove and a splicing convex, and the splicing groove and the splicing convex both extend along a direction perpendicular to the central axis of the threading hole 11; the splicing groove and the splicing convex of the adjacent tight line units 1 are movably spliced together and can move along the direction in which the splicing groove and the splicing convex extend.

[0056] The splicing groove and the splicing convex are alternately arranged on the tight line unit 1, so that the adjacent tight line units 1 can be embedded with each other, and the splicing groove and the splicing convex extend along a direction perpendicular to the central axis of the threading hole 11, so that the tight line unit 1 can move along a predetermined path, preventing the tight line unit 1 from sliding laterally during movement, effectively ensuring the directionality and stability of the tight line unit 1 movement, and ensuring the accuracy of the movement path.

[0057] Further, the splicing part extends transversely along a direction perpendicular to the central axis of the threading hole 11 to form a transverse splicing segment, and extends along a direction perpendicular to the transverse splicing segment to form a longitudinal splicing segment. The transverse splicing segments of the adjacent tight line units 1 are spliced into column tight line units 1, and the longitudinal splicing segments of the adjacent tight line units 1 are spliced into row tight line units 1, each column tight line unit 1 and row tight line unit 1 forms a matrix; each column tight line unit 1 can move along its longitudinal splicing segment, and each row tight line unit 1 can move along its transverse splicing segment.

[0058] Preferably, the transverse splicing segments and the longitudinal splicing segments of the splicing part are connected end to end. Further preferably, at least two transverse splicing segments are parallel to each other and symmetric about the central axis of the threading hole 11, and at least two longitudinal splicing segments are parallel to each other and symmetric about the central axis of the threading hole 11.

[0059] The splicing part is designed as transverse splicing segments and longitudinal splicing segments, and the splicing segments of adjacent tight line units move along the transverse and longitudinal directions respectively. Through this clear directional design, the movement path of the tight line unit is effectively controlled, avoiding the path deviation caused by multi-directional movement, and ensuring the stability of the movement path.

[0060] The rows of tight line units 1 and the columns of tight line units 1 form a matrix, ensuring that each tight line unit 1 follows a fixed path when moving. This matrix structure ensures that the movement path remains consistent throughout the process, which helps to achieve precise control and stable movement path.

[0061] Further, the transverse splicing segments and the longitudinal splicing segments are symmetric about the central axis of the threading hole 11. This symmetric design makes the force on the tight line unit uniform when moving, reducing the problem of structural deviation or unstable movement path caused by asymmetric force. At least two transverse splicing segments are parallel to each other, and at least two longitudinal splicing segments are parallel to each other. This parallel design further ensures the tightness of splicing and the stability of movement.

[0062] In this embodiment, the tight line unit 1 can be formed in various ways, for example:

[0063] Method one: the tight line unit 1 is a complete block structure, the central region of the block structure is provided with a threading hole 11, and the side wall of the block structure is provided with transverse splicing segments and longitudinal splicing segments.

[0064] Method two: the tight line unit 1 is formed by a plurality of mounting plates; specifically, as shown in Figure 2 , a plurality of mounting plates with through holes 121 are stacked and arranged concentrically to form the tight line unit 1, the through holes 121 are stacked to form the threading hole 11 of the tight line unit, and the side parts of adjacent mounting plates are movably spliced.

[0065] Further, the mounting plate is a rectangular mounting plate, the through hole 121 on the rectangular mounting plate is eccentrically arranged, the center of each mounting plate and the center of each through hole 121 are coplanarly arranged, and there is a spacing between each adjacent mounting plate, i.e. the spacing 4 between the adjacent mounting plates. The adjacent mounting plates and the adjacent mounting plates are spliced by inserting the spacing 4. Preferably, the corners of each mounting plate are rounded. Among them, the two mounting plates in direct contact are adjacent mounting plates, and the two mounting plates with one mounting plate in between are adjacent mounting plates.

[0066] by Figure 2 For example, the tensioning unit 1 is formed by a first mounting plate 12, a second mounting plate 13, a third mounting plate 14, a fourth mounting plate 15, a fifth mounting plate 16, a sixth mounting plate 17, a seventh mounting plate 18, an eighth mounting plate 19, and two mounting plates located below the eighth mounting plate 19. The first mounting plate 12 and the second mounting plate 13 are arranged adjacent to each other, and the first mounting plate 12 and the third mounting plate 14 are arranged next to each other.

[0067] Furthermore, the areas where the through holes 121 of each adjacent mounting plate are located are stacked, the centers of each adjacent mounting plate are located on both sides of the central axis of the through hole 121, the centers of each subsequent adjacent mounting plate are located on the same side of the central axis of the through hole 121, and the sides of each subsequent adjacent mounting plate are flush.

[0068] Taking the first mounting plate 12, the second mounting plate 13, and the third mounting plate 14 as an example, the centers of the first mounting plate 12 and the second mounting plate 13 are located on both sides of the central axis of the through hole 121, and the centers of the first mounting plate 12 and the third mounting plate 14 are located on the same side of the central axis of the through hole 121. The second mounting plate 13 is sandwiched between the first mounting plate 12 and the third mounting plate 14, and the first mounting plate 12 and the third mounting plate 14 are separated by the second mounting plate 13 to form a secondary adjacent mounting plate interval 4.

[0069] Furthermore, the first side 123 of the first mounting plate, the fourth side 126 of the first mounting plate, and the first side 131 of the second mounting plate are parallel to each other; the second side 124 of the first mounting plate, the third side 125 of the first mounting plate, and the second side 132 of the second mounting plate are parallel to each other; and the first side 123 of the first mounting plate and the first side 141 of the third mounting plate are aligned vertically.

[0070] In this embodiment, the interval 4 between adjacent mounting plates forms the movement path of the tensioning unit 1, ensuring that the tensioning unit 1 can move along a predetermined trajectory. This design keeps the movement path straight, reducing instability caused by path deviation. Furthermore, the sides of adjacent mounting plates are aligned, such as the first side 123 of the first mounting plate and the first side 141 of the third mounting plate being aligned vertically. This alignment design ensures that the tensioning unit 1 maintains a consistent direction during movement, further guaranteeing the straightness and stability of the movement path.

[0071] The adjacent mounting plates are interlocked with the mounting plates of the adjacent tensioning unit 1 via a spacing of 4. This design not only ensures stable splicing of the tensioning unit 1 but also provides excellent support and fixation during movement. Through the spacing of 4 and the interlocking design, the tensioning unit 1 effectively reduces swaying and offset during movement, ensuring stable system operation. The splicing design maintains tight contact between the tensioning units 1, increasing the overall stability and reliability of the system.

[0072] Furthermore, in this invention, connecting holes 122 are formed around the through holes 121 of each mounting plate, specifically as follows: Figure 2 As shown, four connecting holes 122 are formed around the through hole 121. The connecting holes 122 of the several mounting plates are arranged concentrically, and the connectors of the tensioning unit 1 are passed through the connecting holes 122 of each mounting plate to connect the several mounting plates together to form the tensioning unit 1.

[0073] Alternatively, each mounting plate may be integrally molded.

[0074] In this invention, connecting holes 122 are made around the through holes 121 of each mounting plate, and multiple mounting plates are connected together using connectors to form a tensioning unit 1. This design not only enhances the structural stability and robustness but also simplifies the assembly and disassembly process, improving operational efficiency. The concentrically arranged connecting holes 122 ensure precise alignment of each mounting plate during connection, reducing problems caused by installation errors. Precise alignment improves the accuracy of the tensioning unit 1 during operation, ensuring high quality in the weaving process. Through the design of the connecting holes 122 and connectors, each mounting plate can be evenly stressed, avoiding deformation or damage caused by localized stress concentration. This even stress distribution characteristic improves the durability and stability of the equipment. Furthermore, the connecting holes 122 reduce the weight of each mounting plate, thereby reducing the weight of the tensioning unit 1, making it easier for the tensioning unit 1 to float between the braiding base 5 and the braiding opening 6.

[0075] In one embodiment of this invention, the drive unit 3 is a drive rod structure, with one end located inside the frame opening to form a power output end 31 connected to the tensioning unit 1, and the other end passing through the mounting opening 25 of the frame and movably mounted on the frame. Preferably, the power output end 31 consists of a plurality of insertion teeth 311 extending along the axial direction of the drive rod, which are inserted at intervals 4 with the next adjacent mounting plates formed by the side mounting plates of the tensioning unit 1.

[0076] Furthermore, the power output end 31 of the drive unit 3 has a radially protruding locking portion 312. A plurality of insertion teeth 311 extend axially outward from the end face of the locking portion 312 along the drive rod structure. The power output end 31 is located inside the frame of the mounting frame 2, and the locking portion 312 abuts against the inner wall of the frame. The other end of the drive rod structure opposite to the power output end 31 passes through the mounting opening 25 and is located on the outer side of the mounting frame 2. The other end of the drive rod structure opposite to the power output end 31 is connected to an external power source, such as a motor output shaft or a cylinder. The motor output shaft or cylinder pushes the drive rod structure along the mounting opening 25 towards the inside of the frame opening or drives the drive rod structure from the inside of the frame opening to the outside of the frame opening.

[0077] The power output end 31 has a radially protruding snap-fit ​​portion 312 at its end, ensuring that the power output end 31 can firmly abut against the inner wall of the frame and prevent it from coming out of the mounting port 25 during movement. The insertion teeth 311 extend outward along the axial direction of the drive rod structure and are tightly inserted into the mounting plate of the tensioning unit 1 at a distance of 4, ensuring that the drive unit 3 can effectively transmit power and improve the reliability of the overall structure.

[0078] Example 2

[0079] like Figure 5 As shown, this embodiment provides a three-dimensional knitting device. The three-dimensional knitting device includes a knitting base 5 and a knitting opening 6. The knitting base 5 is located at the bottom of the entire knitting device, providing basic support and guidance for yarn arrangement, carrying the yarn carriers and yarns 8, and ensuring that the yarns 8 move along a predetermined path. The yarn carriers are mounted on the knitting base, and each yarn carrier controls the movement of one yarn, arranging the yarns along a predetermined path through four steps. The yarns 8 pass through the yarn carriers and are fixed between the knitting base 5 and the knitting opening 6, interlacing and forming a preform 7 during the knitting process. The knitting opening 6 is located above or to the side of the knitting base 5, providing space and guidance for the yarns 8 to be knitted, guiding and fixing the position of the yarns 8, and ensuring that the yarns 8 maintain the correct path and tension during movement.

[0080] The process of weaving yarn is as follows:

[0081] Step 1: The yarn carrier moves along the direction of travel and arranges the yarn 8 in the predetermined position.

[0082] Step 2: The yarn carrier moves along the column direction to interweave and arrange the yarns 8.

[0083] Step 3: The yarn carrier moves in the opposite direction to continue arranging the yarn 8.

[0084] Step 4: The yarn carrier moves in the opposite column direction to complete one cycle.

[0085] Cyclic movement: the carrier returns to the initial state after every four steps, completing a weaving cycle of the preform. One machine cycle generates one cell of the preform. During the weaving process, the yarns 8 interweave with each other, the preform enters the locked state, and as the number of interweaving stitches increases, the yarn bending degree increases, the preform gradually tightens, and the yarn tension gradually increases. The carrier moves accurately along the predetermined trajectory on the plane, causing many fibers arranged in the same direction to interweave with each other to form a net-like overall structure, and finally the interweaving surface is tightened to form a preform of different shapes.

[0086] The three-dimensional weaving device in the embodiment further comprises a three-dimensional weaving tensioning device of the application, which is arranged between the weaving base 5 and the weaving port 6, and the yarn 8 is woven at the weaving port 6 after passing through the threading hole 11 of the three-dimensional weaving tensioning device from the weaving base 5. Preferably, the three-dimensional weaving tensioning device is arranged close to the weaving port. More preferably, the frame opening of the mounting frame of the three-dimensional weaving tensioning device is arranged in parallel with the weaving base.

[0087] Specifically, the tensioning unit 1 of the three-dimensional weaving tensioning device corresponds to the arrangement of the carriers on the weaving base 5 one by one, each carrier controls the movement of one yarn, and the yarn is arranged according to the predetermined path through four-step movement. Synchronously, each tensioning unit 1 carries its own yarn 8 and moves synchronously according to the movement law of the weaving base 5, so that the movement law of the yarn 8 is transmitted from the weaving base 5 to the weaving port 6, avoiding interweaving, winding and bonding of the yarn 8, thereby realizing the automatic tensioning function. At the same time, the control of the weaving angle can be realized by adjusting the distance between the three-dimensional weaving tensioning device and the weaving port 6.

[0088] Further, the mounting frame 2 of the three-dimensional weaving tensioning device is similar in shape to the weaving base 5 and is also a rectangular structure, and the area of the frame opening of the mounting frame 2 is smaller than that of the weaving base 5. The mounting frame 2 is suspended above the weaving base 5, and the yarn passes through each tensioning unit 1 arranged in the frame opening of the mounting frame 2 from the weaving base 5 to form the preform 7 at the weaving port 6.

[0089] Further, the three-dimensional weaving device comprises a mounting bracket arranged with one end on the plane where the weaving base 5 is located and with the other end extending towards the weaving port 6, and the mounting frame 2 is arranged on the mounting bracket and is located between the weaving base 5 and the weaving port 6. Each tensioning unit 1 can move longitudinally and transversely in the frame opening of the mounting frame 2. Alternatively, to avoid affecting the formation of the stitch, each tensioning unit 1 is preferably designed to float between the weaving base 5 and the weaving port 6 and to move longitudinally and transversely.

[0090] Embodiment 3,

[0091] The embodiment provides a weaving process of a three-dimensional weaving device, and the weaving process of the embodiment is woven by using the weaving device. Figure 6 The weaving steps are as follows:

[0092] The yarns are arranged in the weaving base 5 with 5 rows and 19 columns, and the initial position of the yarns is arranged as shown in the figure. Figure 6 Among them, A1-1 column (the same column as A2-1 column), A1-19 column (the same column as A2-19 column), B1-1 row (the same row as B2-1 row), and B1-5 row (the same row as B2-5 row) are edge yarns and do not move during the weaving process.

[0093] (1) Moving the odd columns and the even columns by staggering;

[0094] That is, A1-3, A1-5, A1-7, A1-9, A1-11, A1-13, A1-15, and A1-17 columns are moved in the same direction by one displacement distance, that is, moved downward by one cell from B1-1 row to B1-2 row; A2-2, A2-4, A2-6, A2-8, A2-10, A2-12, A2-14, A2-16, and A2-18 columns are moved in the opposite direction by one displacement distance, that is, moved upward by one cell from B1-5 row to B1-4 row.

[0095] (2) Moving the even rows and the odd rows by staggering;

[0096] That is, B1-2 and B1-4 rows are moved in the same direction by one displacement distance, that is, moved rightward by one cell from A1-1 column to A1-2 column; B2-3 row is moved in the opposite direction by one displacement distance, that is, moved leftward by one cell from A1-19 column to A1-18 column.

[0097] (3) Moving the even columns and the odd columns by staggering;

[0098] That is, A1-2, A1-4, A1-6, A1-8, A1-10, A1-12, A1-14, A1-16, and A1-18 columns are moved in the same direction by one displacement distance, that is, moved downward by one cell from B1-1 row to B1-2 row; A2-3, A2-5, A2-7, A2-9, A2-11, A2-13, A2-15, and A2-17 columns are moved in the opposite direction by one displacement distance, that is, moved upward by one cell from B1-5 row to B1-4 row.

[0099] (4) Moving the odd rows and the even rows by staggering;

[0100] B1-3 is moved in the same direction by a displacement distance, that is, B1-3 is moved right by one cell from A1-1 to A1-2; B2-2 and B2-4 are moved in the opposite direction by a displacement distance, that is, B2-2 and B2-4 are moved left by one cell from A1-19 to A1-18;

[0101] (5) Repeat steps (1)-(4) to obtain a 4*18 three-dimensional woven plate.

[0102] In this embodiment, each wire tightening unit 1 of the three-dimensional weaving wire tightening device is moved in synchronization according to the weaving path according to steps (1)-(5) by rows and columns.

[0103] Example 4,

[0104] The embodiment provides a weaving process of a three-dimensional weaving device, and the weaving process of the embodiment is woven by using the weaving device of the application. Specifically, the embodiment weaves a woven plate with two channels in the middle, and the weaving process is combined with Figure 7 , and the weaving steps are as follows:

[0105] The yarns are arranged in the range of the 10-row 60-column weaving base 5, and the middle two channels are not arranged with yarns. The specific initial yarn arrangement diagram is shown in Figure 7 , wherein A1-1, A2-1, A1-60, A2-60, B1-1, B2-1, B1-10 and B2-10 are edge yarns and do not move during weaving.

[0106] (1) Move the columns other than the edge columns up and down; that is, move the columns other than A1-1 and A1-60 up and down;

[0107] (2) Move the rows other than the edge rows and the empty area occupied rows left and right; that is, move B1-2, B2-3, B1-8 and B2-9 rows left and right;

[0108] (4) Move the columns at the edge of the empty area up and down; that is, move A2-11, A1-22, A2-39 and A1-50 columns up and down;

[0109] (5) Move all the rows occupied by the empty area left and right; that is, move B1-4, B2-5, B1-6 and B2-7 rows left and right;

[0110] (6) up and down staggered movement of other columns except the edge columns and the vacancy area occupied columns; that is, up and down staggered movement of A1-2, A2-3, A1-4, A2-5, A1-6, A2-7, A1-8, A2-9, A1-10, A2-23, A1-24, A2-25, A1-26, A2-27, A1-28, A2-29, A1-30, A2-31, A1-32, A2-33, A1-34, A2-35, A1-36, A2-37, A1-38, A2-51, A1-52, A2-53, A1-54, A2-55, A1-56, A2-57, A1-58 and A2-59, to realize the movement of the 34 columns;

[0111] (7) left and right staggered movement of the rows of the edge of the vacancy area; that is, left and right staggered movement of B2-4 and B1-7;

[0112] (8) up and down staggered movement of the non-edge columns occupied by the vacancy area; that is, up and down staggered movement of A1-12, A2-13, A1-14, A2-15, A1-16, A2-17, A1-18, A2-19, A1-20, A2-21, A1-40, A2-41, A1-42, A2-43, A1-44, A2-45, A1-46, A2-47, A1-48 and A2-49, to realize the movement of the 20 columns;

[0113] (9) left and right staggered movement of other rows except the edge rows; that is, left and right staggered movement of B2-2, B1-3, B1-5, B2-6, B2-8 and B1-9, to realize the movement of the 6 rows;

[0114] (10) repeating steps (1) to (9) to obtain a plate with double channels.

[0115] In step (1) of the embodiment, the rows and columns of the yarns are marked, and the rows and columns of the edge of the vacancy area are marked, to facilitate the smooth progress of the weaving process. In the embodiment, the three-dimensional weaving tight line device moves in accordance with the rows and columns synchronously according to the weaving path of steps (1)-(10) by each tight line unit 1.

[0116] The above only describes the preferred embodiments of the present application and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, to obtain equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A three-dimensional braided tensioning device, characterized by: include: The frame has several mounting openings that connect the inside and outside of the frame opening, horizontally extending through the plane where the frame opening is located. Several tensioning units with threading holes are arranged in a matrix in rows and columns within the frame opening, and adjacent tensioning units can be movably spliced ​​together within the frame opening. The plane where each threading hole is located is parallel to the plane where the frame opening is located. Several drive units are movably inserted into several of the mounting ports, and the power output end of each drive unit is connected to the tensioning unit located at the edge of the matrix, for driving each row tensioning unit to move in the row direction and each column tensioning unit to move in the column direction.

2. A three-dimensional braided tension string device according to claim 1, wherein: The outer side of the thread hole of the tensioning unit has a splicing part that extends along a direction perpendicular to the central axis of the thread hole. The splicing parts of adjacent tensioning units can be movably spliced ​​together and can move along the direction of the splicing part.

3. A three-dimensional braiding tensioning device according to claim 2, characterized in that: The splicing part extends laterally along the direction perpendicular to the central axis of the thread hole to form a horizontal splicing segment, and extends along the direction perpendicular to the horizontal splicing segment to form a vertical splicing segment. The horizontal splicing segments of adjacent tensioning units are spliced ​​together to form a column tensioning unit, and the vertical splicing segments of adjacent tensioning units are spliced ​​together to form a row tensioning unit. Preferably, the horizontal splicing segment and the vertical splicing segment of the splicing part are connected end to end; Preferably, at least two transverse splicing segments are parallel to each other and symmetrical about the central axis of the threading hole, and at least two longitudinal splicing segments are parallel to each other and symmetrical about the central axis of the threading hole.

4. A three-dimensional braided tensioning device according to any one of claims 2-3, characterized in that: Several mounting plates with through holes are stacked and arranged, and the through holes of each mounting plate are concentrically arranged to form the tensioning unit. The stacked through holes form the threading hole of the tensioning unit, and the sides of the mounting plates of adjacent tensioning units can be movably spliced ​​together.

5. A three-dimensional braided tension string device according to claim 4, wherein: The mounting plate is a rectangular mounting plate with eccentrically arranged through holes. The center of each mounting plate and the center of each through hole are coplanar. There is a gap between each adjacent mounting plate. The mounting plates of adjacent tensioning units are interlocked and spliced.

6. A three-dimensional braided tension string device according to claim 5, wherein: The areas containing the through holes of each adjacent mounting plate are stacked together. The centers of each adjacent mounting plate are located on both sides of the central axis of the through hole. The centers of each subsequent adjacent mounting plate are located on the same side of the central axis of the through hole, and the sides of each subsequent adjacent mounting plate are flush.

7. A three-dimensional braided tension string device according to claim 6, wherein: Connection holes are formed around the through holes of the mounting plate. The connection holes of several mounting plates are concentrically arranged. The connectors of the tensioning unit are passed through the connection holes of each mounting plate, and the several mounting plates are connected together to form the tensioning unit.

8. A three-dimensional braided tensioning device according to any one of claims 5 to 7, wherein: The drive unit is a drive rod structure, one end of which is located inside the frame opening to form a power output end and connect to the tensioning unit, and the other end passes through the mounting opening of the frame and is movably mounted on the frame. Preferably, the power output end consists of several insertion teeth extending axially along the drive rod, which are inserted at intervals into the mounting plate on the side of the tensioning unit.

9. A three-dimensional braiding apparatus comprising a braiding bed and a braiding mouth, characterized by: It also includes a three-dimensional braiding tensioning device as described in any one of claims 1-8, wherein the three-dimensional braiding tensioning device is disposed between the braiding base and the braiding opening, and the yarn passes through the threading hole of the three-dimensional braiding tensioning device from the braiding base and is braided at the braiding opening; Preferably, the three-dimensional braiding tensioning device is located near the braiding opening; Preferably, the frame opening of the three-dimensional knitting tight line device mounting frame is arranged in parallel with the knitting base plate.

10. A braiding process for a three-dimensional braid as claimed in claim 9, characterized in that: The yarns of the carriers of the knitting base plate are knitted at the knitting opening through the threading holes of the three-dimensional knitting tight line device, and the rows and columns of the three-dimensional knitting tight line device and the carriers of the knitting base plate are synchronously moved during the knitting process.

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