A fiber strip feeding system suitable for weft laying machine

Abstract

The present invention relates to a fiber strip feeding system suitable for a weft laying machine, comprising a reeling device and a tensioning device. After the fiber strip is flattened and fed out by the reeling device, it is sequentially wound around a rotating roller assembly, a gravity roller assembly and a guide roller assembly. During the feeding process of the fiber strip, the rotating roller assembly, the gravity roller assembly and the guide roller assembly always perform circumferential rotation around their central axes under the action of the friction force of the fiber strip, and the gravity roller assembly tensions the fiber strip under the action of its own gravity, so that the fiber strip is always maintained in a reasonable tension state, thereby ensuring that the fiber strip is continuously and stably fed into the weft laying machine, ensuring that the weft laying process can be smoothly implemented. In addition, the swing angle of the gravity roller assembly can also be adaptively changed with the change of the feeding speed of the fiber strip to avoid the occurrence of the phenomenon that the fiber strip is broken due to excessive tension.

Description

Technical Field

[0001] The invention relates to the technical field of textile machinery and equipment manufacturing, in particular to a fiber cloth strip feeding system suitable for a weft laying machine. Background Art

[0002] Carbon fiber is a new type of material with a carbon content of more than 95% and high strength and high modulus. Carbon fiber is made of organic fibers such as flake graphite microcrystals stacked along the axial direction of the fiber. The microcrystalline graphite material obtained by carbonization and graphitization not only has the inherent intrinsic properties of carbon materials, but also has the softness and processability of textile fibers.

[0003] The fiber cloth is woven from carbon fiber, and its production process is roughly as follows: the carbon fiber bundle is flattened into a flat monofilament carbon fiber through a yarn spreading machine, and then, it is bonded into a fiber cloth strip by an adhesive, and then, the fiber cloth strip is laid by a weft laying machine, and then, the weft-laid fiber cloth strip is cross-woven by a warp knitting machine to finally form the fiber cloth.

[0004] In the actual working process of the weft laying machine, the weft pulling mechanism is required to pull the fiber strips to be cut through the fiber strip cutting mechanism, the left feeding mechanism, and the right feeding mechanism in sequence. The fiber strip cutting mechanism performs a cutting operation on the tensioned fiber strips, and then the left feeding mechanism and the right feeding mechanism act synchronously to perform a weft laying operation on the cut fiber strips. At this time, the two ends of the fiber strips are respectively pressed into and fixed to the left weft laying mechanism and the right weft laying mechanism. The left weft laying mechanism and the right weft laying mechanism perform synchronous displacement movements to feed the weft-laid fiber strips into the warp knitting machine to perform warp and weft weaving operations.

[0005] In the prior art, the fiber strip feeding system is mainly composed of an unwinding device and a tensioning device. The unwinding device is arranged upstream of the tensioning device, and the two work together to continuously input the fiber strip to the weft laying machine. The unwinding device is used to unwind the fiber strip roll and feed it to the tensioning device.

[0006] It is known that, according to design common sense, the tensioning device can adopt a variety of design structures to achieve the tensioning of the fiber cloth strips. For example: Chinese invention patent CN110129987A discloses a yarn tensioning mechanism of a warp knitting machine, including a frame connected to the warp knitting machine by bolts, a distance sensor for detecting the drooping amplitude of the yarn, a tensioning wheel for winding the yarn, a speed limiting mechanism for controlling the rotation speed of the tensioning wheel, and a controller for controlling the operation of the speed limiting mechanism. The tensioning wheel is coaxially welded with a rotating shaft, and the frame is also connected to a motor that drives the tensioning wheel to rotate. The motor is fixed to the frame by bolts, which is connected to the rotating shaft through a reducer. The rotating shaft is rotatably connected to the upper end of the frame, and the yarn is wrapped around the side wall of the tensioning wheel twice. The distance sensor is fixed to the upper end face of the frame by bolts, and its detection end faces the lower end of the yarn, and it is electrically connected to the controller. The working principle of the yarn tensioning mechanism of the warp knitting machine is as follows: when the weaving speed of the warp knitting machine is reduced, the tensioning wheel will still rotate under the action of the motor. At this time, as the yarn is piled up too much on the side of the tensioning wheel away from the yarn travel direction, the yarn will move downward under the action of gravity. At this time, the distance sensor detects that the distance between the yarn and the distance sensor is less than the threshold value preset by the distance sensor. The distance sensor feedbacks the signal to the controller, and the controller controls the speed limiting mechanism to work, slowing down the rotation speed of the tensioning wheel, thereby reducing the speed of the yarn movement, so that the yarn remains tensioned, and then the yarn no longer sags, so that the tensioning amplitude of the yarn is not easy to change significantly. Although the application of the above technical solution is theoretically feasible, the actual application effect is extremely poor. The reason is that the accumulation thickness of the yarn on the tensioning wheel is affected by multiple factors such as the outer diameter of the tensioning wheel, the yarn specifications, the winding arrangement method and the tension, and it is difficult to ensure that the yarn in the feeding process always maintains a reasonable and stable tension. Moreover, at the initial start-up stage of the warp knitting machine, the yarn "droops in a single line" because it fails to be wound onto the tensioning wheel in time, which causes the distance sensor to mistakenly send a control signal to the speed limiting mechanism. For another example, Chinese invention patent CN210763621U discloses a yarn tensioning device, comprising a transverse bracket, a U-shaped bracket fixedly connected to the bottom side of the transverse bracket, a winding wheel and a wire passing wheel are respectively arranged at two ends of the front side of the transverse bracket, a large slider is slidably installed in the U-shaped bracket, a wheel axle is arranged on the large slider, and a tensioning wheel is rotatably sleeved on the wheel axle, and the winding wheel, the tensioning wheel and the wire passing wheel are sequentially connected to the same yarn in a transmission manner; a hollow groove is arranged on the large slider, a small slider is slidably installed in the hollow groove, and the tensioning wheel is located at the front side of the small slider and the large slider, one end of the wheel axle is fixedly connected to the small slider, a spring 1 is fixedly connected between the top of the small slider and the top inner wall of the hollow groove, a spring 2 is fixedly connected between the bottom of the small slider and the bottom inner wall of the hollow groove, a screw is rotatably connected to the bottom of the large slider, a threaded hole is arranged on the bottom inner wall of the U-shaped bracket, the bottom end of the screw passes through the threaded hole and is threadedly connected to the threaded hole, and a rotating knob is fixedly arranged on the bottom end of the screw.Through the application of the above technical solution, although it can effectively ensure that the yarn in the feeding process is always kept in a reasonably tensioned state, when the tension of the yarn needs to be adjusted, the screw needs to be frequently rotated to increase or decrease the relative height position of the tensioning wheel, which is extremely inconvenient to operate, and the rotation of the screw depends entirely on the experience of the workers, which requires high quality and work responsibility of the workers, and is not conducive to popularization and promotion. Therefore, it is urgent for technical personnel to solve the above problems. Summary of the invention

[0007] Therefore, in view of the above-mentioned existing problems and defects, the designers of the present invention collected relevant information, conducted multiple evaluations and considerations, and continued to experiment and modify after many years of R&D experience in this industry, which ultimately led to the emergence of the fiber cloth strip feeding system suitable for the weft laying machine.

[0008] In order to solve the above technical problems, the present invention relates to a fiber strip feeding system suitable for a weft laying machine, comprising an unwinding device and a tensioning device. The unwinding device is arranged upstream of the tensioning device, and the two cooperate to continuously input the fiber strip to the weft laying machine. The unwinding device is used to unwind the fiber strip roll and feed it to the tensioning device. The tensioning device includes a first bracket, a tensioning unit and a guide roller assembly. The tensioning unit and the guide roller assembly are both supported by the first bracket. The guide roller assembly is arranged downstream of the tensioning unit to convey the fiber strip transferred from the tensioning unit to the weft laying machine in a directional manner. The tensioning unit includes a rotating roller assembly, a force transmission assembly and a gravity roller assembly. The rotating roller assembly is mounted on the first bracket and can freely perform self-rotation and rotation around its central axis. The gravity roller assembly is arranged on one side of the rotating roller assembly through the force transmission assembly, and it can freely perform self-rotation around its own central axis, and can also freely perform orbital motion around the central axis of the rotating roller assembly.

[0009] As a further improvement of the technical solution of the present invention, the rotating roller assembly includes a first rotating shaft assembly, a first supporting roller, a front circumferential rotating support portion, and a first rear circumferential rotating support portion. The front circumferential rotating support portion and the first rear circumferential rotating support portion are both assembled on the first bracket and arranged opposite to each other, and cooperate to achieve support for the first rotating shaft assembly. The first supporting roller is used for winding the fiber cloth strip, and is sleeved and fixed on the first rotating shaft assembly.

[0010] As a further improvement of the technical solution of the present invention, the front circumferential rotation support portion includes a first front bearing seat and a first front bearing. The first front bearing seat is detachably fixed to the front side wall of the first bracket. The first front bearing is embedded in the first front bearing seat and fits with the first rotating shaft assembly. The first rear circumferential rotation support portion includes a first rear bearing seat and a first rear bearing. The first rear bearing seat is detachably fixed to the rear side wall of the first bracket. The first rear bearing is embedded in the first rear bearing seat and fits with the first rotating shaft assembly.

[0011] As a further improvement of the technical solution of the present invention, the force transmission assembly is composed of a front force transmission subassembly and a rear force transmission subassembly. Among them, the front force transmission subassembly is arranged in front of the first supporting roller, and includes a front force transmission plate and a second front bearing. The rear force transmission subassembly is arranged behind the first supporting roller, and includes a rear force transmission plate and a second rear bearing. The front force transmission plate is sleeved on the first rotating shaft assembly by the second front bearing, and can freely perform circumferential rotation. The rear force transmission plate is sleeved on the first rotating shaft assembly by the second rear bearing, and can also freely perform circumferential rotation. The front force transmission plate and the rear force transmission plate are respectively arranged on the front and rear sides of the gravity roller assembly, and work together to support the gravity roller assembly.

[0012] As a further improvement of the technical solution of the present invention, the gravity roller assembly includes a second rotating shaft assembly and a second supporting roller. The front and rear ends of the first rotating shaft assembly are respectively and detachably fixed to the front force transmission plate and the rear force transmission plate in a one-to-one correspondence. The second supporting roller is also provided for the limiting cloth strip to be wound around, and is sleeved on the second rotating shaft assembly and can freely perform circumferential rotation around its central axis.

[0013] As a further improvement of the technical solution of the present invention, the guide roller assembly includes a third rotating shaft assembly, a third supporting roller, a third front bearing and a third rear bearing. The third front bearing and the third rear bearing are respectively embedded in the front and rear side walls of the first bracket in a one-to-one correspondence, and cooperate to achieve support for the third rotating shaft assembly. The third supporting roller is used for winding the fiber cloth strip, and is sleeved and fixed on the third rotating shaft assembly.

[0014] As a further improvement of the technical solution of the present invention, the unwinding device includes a second bracket, a material unwinding component and a release paper rewinding unit. The material unwinding component is supported by the second bracket and flattens the fiber cloth strip by pulling force. The release paper rewinding unit is also supported by the second bracket and is used in conjunction with the rewinding device to collect the liner release paper peeled off from the fiber cloth strip.

[0015] As a further improvement of the technical solution of the present invention, the unwinding assembly includes a fourth rotating shaft assembly, an unwinding tray, a fourth front bearing and a fourth rear bearing. The fourth front bearing and the fourth rear bearing are respectively embedded in the front and rear side walls of the second bracket in a one-to-one correspondence, and cooperate to achieve support for the fourth rotating shaft assembly. The unwinding tray is wound with the fiber cloth strip to be unwound, and is sleeved and fixed on the fourth rotating shaft assembly.

[0016] As a further improvement of the technical solution of the present invention, the release paper winding unit includes a material collection drum, a fifth rotating shaft, a second rear circumferential rotating support part and a power part. The second rear circumferential rotating support part is assembled on the rear side wall of the second bracket to support the fifth rotating shaft. And the fifth rotating shaft is in a single-point cantilever posture. The fifth rotating shaft is used to support the material collection drum. The fifth rotating shaft is driven by the power part, and when the power part is started, the material collection drum follows the fifth rotating shaft to synchronously perform circumferential rotational motion to collect the liner release paper peeled off from the fiber cloth strip.

[0017] As a further improvement of the technical solution of the present invention, the second rear circumferential rotation support portion includes a second rear bearing seat and a fifth rear bearing. The second rear bearing seat is detachably fixed to the rear side wall of the second bracket. The fifth rear bearing is embedded in the second rear bearing seat and fits with the fifth rotation axis.

[0018] As a further improvement of the technical solution of the present invention, the power unit includes a support seat, a rotating motor and a synchronous belt transmission mechanism. The support seat is used to bear the rotating motor and is detachably fixed to the second bracket. The synchronous belt transmission mechanism is used to transmit the torsional moment to the fifth rotating shaft, and includes a first synchronous wheel, a second synchronous wheel and a synchronous belt that can be simultaneously sleeved with the first synchronous wheel and the second synchronous wheel. The first synchronous wheel is directly driven by the rotating motor, and the second synchronous wheel is sleeved and fixed on the fifth rotating shaft.

[0019] As a further improvement of the technical solution of the present invention, the release paper winding unit further includes a rotary ejector pin, which is used to limit the axial displacement freedom and circumferential deflection of the receiving drum and is also borne by the second bracket.

[0020] As a further improvement of the technical solution of the present invention, the rotary ejector part includes a linear motion element, a transition shaft, a second front circumferential rotation support part and a front conical shaft head. The linear motion element is used to drive the transition shaft to perform axial displacement movement, and it is detachably inserted on the front side of the second bracket. With the assistance of the second front circumferential rotation support part, the front conical shaft head is assembled on the transition shaft and can freely perform circumferential rotation movement around its central axis. Under the driving force of the linear motion element, the front conical shaft head performs axial displacement movement forward / backward to achieve / release the top contact with the front end of the receiving barrel.

[0021] As a further improvement of the technical solution of the present invention, the second front circumferential rotation support portion is a fifth front bearing assembled between the transition shaft and the front tapered shaft head.

[0022] As a further improvement of the technical solution of the present invention, the front end surface of the fifth rotating shaft continues to extend forward to form a rear conical push-up section. The rear conical push-up section is opposite to the front conical shaft head and cooperates to support the receiving barrel.

[0023] By adopting the above technical solution, the fiber strip is flattened and sent out by the unwinding device, and then passes through the rotating roller assembly, the gravity roller assembly and the guide roller assembly in sequence. During the feeding process of the fiber strip, the rotating roller assembly, the gravity roller assembly and the guide roller assembly always perform circumferential rotation around their central axis under the action of the friction force of the fiber strip, and the gravity roller assembly tensions the fiber strip under the action of its own gravity, so that the fiber strip is always maintained in a reasonable tension state, thereby ensuring that the fiber strip is continuously and stably fed into the weft laying machine, ensuring that the weft laying process can be smoothly implemented.

[0024] In practical applications, the fiber strip feeding system suitable for weft laying machines has achieved at least the following beneficial effects:

[0025] 1) Under the premise of ensuring reasonable tension of the fiber strips, the fiber strip feeding system has an extremely simple design structure, which is conducive to the implementation of manufacturing operations and has a low overall manufacturing cost;

[0026] 2) The fiber cloth strip feeding system can effectively tension the fiber cloth strip by utilizing the weight of the gravity roller assembly, and no human intervention is required during the whole process;

[0027] 3) As the feeding speed of the fiber strip changes, the yaw angle of the gravity roller assembly (i.e., the revolution angle of the gravity roller assembly relative to the rotating roller assembly) also changes adaptively to ensure that the fiber strip is always maintained at a reasonable tension state, thereby effectively and thoroughly preventing the fiber strip from being torn due to unreasonable tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1It is a schematic diagram of the actual application state of the fiber cloth strip feeding system suitable for the weft laying machine in the present invention.

[0030] Figure 2 It is a three-dimensional schematic diagram of a fiber cloth strip feeding system suitable for a weft laying machine in the present invention.

[0031] Figure 3 It is a three-dimensional schematic diagram from one perspective of an unwinding device in a fiber cloth strip feeding system suitable for a weft laying machine according to the present invention.

[0032] Figure 4 yes Figure 3 Front view of .

[0033] Figure 5 yes Figure 4 AA section view.

[0034] Figure 6 It is a three-dimensional schematic diagram from another perspective of the unwinding device in the fiber cloth strip feeding system of the weft laying machine of the present invention.

[0035] Figure 7 It is a three-dimensional schematic diagram of a tensioning device in a fiber cloth strip feeding system suitable for a weft laying machine according to the present invention.

[0036] Figure 8 It is a three-dimensional schematic diagram of a tensioning unit in a fiber cloth strip feeding system suitable for a weft laying machine according to the present invention.

[0037] Fig. 9 yes Figure 8 Front view of .

[0038] Fig.10 yes Fig. 9 BB cross-sectional view.

[0039] Fig.11 yes Figure 7 Front view of .

[0040] Fig.12 yes Fig.11 CC cross-sectional view.

[0041] Fig.13 yes Fig.11 DD cross-sectional view.

[0042] 1-unwinding device; 11-second bracket; 12-unwinding assembly; 121-fourth rotating shaft assembly; 122-unwinding tray; 123-fourth front bearing; 124-fourth rear bearing; 13-release paper winding unit; 131-receiving drum; 132-fifth rotating shaft; 1321-rear conical push-top section; 133-second rear circumferential rotating support; 1331-second rear bearing seat; 1332-fifth Rear bearing; 134-power unit; 1341-support seat; 1342-rotating motor; 1343-synchronous belt transmission mechanism; 135-rotating ejector; 1351-cylinder; 1352-transition shaft; 1353-second front circumferential rotation support; 13531-fifth front bearing; 1354-front conical shaft head; 2-tensioning device; 21-first bracket; 22-tensioning unit; 221-rotating Roller assembly; 2211-first rotating shaft assembly; 2212-first supporting roller; 2213-front circumferential rotating support; 22131-first front bearing seat; 22132-first front bearing; 2214-first rear circumferential rotating support; 22141-first rear bearing seat; 22142-first rear bearing; 222-force transmission assembly; 2221-front force transmission subassembly; 22211-front - force transmission plate; 22212-second front bearing; 2222-rear force transmission sub-assembly; 22221-rear force transmission plate; 22222-second rear bearing; 223-gravity roller assembly; 2231-second rotating shaft assembly; 2232-second supporting roller; 23-guide roller assembly; 231-third rotating shaft assembly; 232-third supporting roller; 233-third front bearing; 234-third rear bearing. DETAILED DESCRIPTION

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] Figure 1The actual application state schematic diagram of the fiber cloth strip feeding system suitable for the weft laying machine in the present invention is shown. It can be seen that the weft laying machine used for weaving fiber cloth is mainly composed of a fiber cloth strip feeding system, a left feeding mechanism, a right feeding mechanism, a left weft laying mechanism, a right weft laying mechanism, a fiber cloth strip cutting mechanism and a weft pulling mechanism. Among them, the fiber cloth strip feeding system is used to flatten the fiber cloth roll and feed it to the fiber cloth strip cutting mechanism. The left feeding mechanism and the right feeding mechanism are oppositely arranged along the left and right directions, and the action process is kept synchronous, and they are used in conjunction with the fiber cloth strip cutting mechanism to receive the fiber cloth strips cut by the fiber cloth strip cutting mechanism, and press the left and right ends of the fiber cloth strip segment into the left weft laying mechanism and the right weft laying mechanism one by one. The weft pulling mechanism is used in conjunction with the fiber cloth strip feeding system, and is used to pull the fiber cloth strips released by the fiber cloth strip feeding system and guide them to the right feeding mechanism. In the actual working process of the weft laying machine, the weft pulling mechanism is required to pull the fiber strips to be cut through the fiber strip cutting mechanism, the left feeding mechanism, and the right feeding mechanism in sequence. The fiber strip cutting mechanism performs a cutting operation on the tensioned fiber strips, and then the left feeding mechanism and the right feeding mechanism synchronously act (perform displacement movement along the front and back directions) to perform a weft laying operation on the cut fiber strips. At this time, the two ends of the fiber strips are respectively pressed into and fixed to the left weft laying mechanism and the right weft laying mechanism. The left weft laying mechanism and the right weft laying mechanism perform synchronous displacement movement to feed the weft-laid fiber strips into the warp knitting machine to perform warp and weft weaving operations, and finally form a fiber cloth.

[0045] The following is a further detailed description of the present invention in conjunction with specific embodiments. Figure 2 The 3D schematic diagram of the fiber strip feeding system for the weft laying machine in the present invention is shown. It can be seen that it is mainly composed of an unwinding device 1 and a tensioning device 2. The unwinding device 1 is arranged upstream of the tensioning device 2, and the two work together to continuously input the fiber strip to the weft laying machine. The unwinding device 1 is used to unwind the fiber strip roll and feed it to the tensioning device 2.

[0046] Figure 7 The present invention is a three-dimensional schematic diagram of a tensioning device in a fiber cloth strip feeding system for a weft laying machine. It can be seen that the tensioning device is mainly composed of a first bracket 21, a tensioning unit 22, and a guide roller assembly 23. The tensioning unit 22 and the guide roller assembly 23 are both supported by the first bracket 21. The guide roller assembly 23 is arranged downstream of the tensioning unit 22 to convey the fiber cloth strip transferred from the tensioning unit 22 to the weft laying machine in a directional manner. Figure 8As shown in the figure, the tensioning unit 22 includes a rotating roller assembly 221, a force transmission assembly 222 and a gravity roller assembly 223. The rotating roller assembly 221 is mounted on the first bracket 21 and can freely rotate around its central axis. The gravity roller assembly 223 is arranged on one side of the rotating roller assembly 221 through the force transmission assembly 222, and can freely rotate around its own central axis, and can also freely revolve around the central axis of the rotating roller assembly 221.

[0047] In the actual operation of the weft laying machine, the fiber strip is flattened and sent out by the unwinding device 1, and then passes through the rotating roller assembly 221, the gravity roller assembly 223 and the guide roller assembly 23 in sequence. In the process of feeding the fiber strip, the rotating roller assembly 221, the gravity roller assembly 223 and the guide roller assembly 23 always perform circumferential rotation around their central axis under the action of the friction force of the fiber strip, and the gravity roller assembly 223 tensions the fiber strip under the action of its own gravity, so that the fiber strip is always maintained in a reasonable tension state, thereby ensuring that the fiber strip is continuously and stably fed into the weft laying machine, ensuring that the weft laying process can be smoothly implemented.

[0048] In practical applications, the fiber strip feeding system suitable for weft laying machines has achieved at least the following beneficial effects:

[0049] 1) Under the premise of ensuring reasonable tension of the fiber strips, the fiber strip feeding system has an extremely simple design structure, which is conducive to the implementation of manufacturing operations and has a low overall manufacturing cost;

[0050] 2) The fiber cloth strip feeding system can effectively tension the fiber cloth strip by utilizing the weight of the gravity roller assembly 223, and no human intervention is required during the whole process.

[0051] In addition, it should be emphasized that as the feeding speed of the fiber cloth changes, the yaw angle of the gravity roller assembly 223 (i.e., the revolution angle of the gravity roller assembly 223 relative to the rotating roller assembly 221) also changes adaptively to ensure that the fiber cloth is always maintained at a reasonable tension state, thereby effectively and thoroughly preventing the fiber cloth from being torn due to unreasonable tension.

[0052] As a further refinement of the above rotating roller assembly structure, Figure 8 , 9As shown in Figures 10, the rotating roller assembly 221 is mainly composed of several parts such as the first rotating shaft assembly 2211, the first supporting roller 2212, the front circumferential rotating support part 2213 and the first rear circumferential rotating support part 214. Among them, the front circumferential rotating support part 2213 and the first rear circumferential rotating support part 2214 are both assembled on the first bracket 21 and are arranged opposite to each other, and work together to achieve support for the first rotating shaft assembly 2211. The first supporting roller 2212 is used for winding the fiber cloth strips, and is sleeved and fixed on the first rotating shaft assembly 2211. Fig.11 , 12 As shown in , the front circumferential rotation support part 2213 is mainly composed of a first front bearing seat 22131 and a first front bearing 22132. The first front bearing seat 22131 is detachably fixed to the front side wall of the first bracket 21. The first front bearing 22132 is embedded in the first front bearing seat 22131 and fits with the first rotating shaft assembly 2211. The first rear circumferential rotation support part 2214 is mainly composed of a first rear bearing seat 22141 and a first rear bearing 22142. The first rear bearing seat 22142 is detachably fixed to the rear side wall of the first bracket 21. The first rear bearing 22142 is embedded in the first rear bearing seat 22141 and also fits with the first rotating shaft assembly 2211. In this way, it is not only effectively ensured that the first supporting roller 2212 has good rotation sensitivity in practical applications, but also effectively prevents the first supporting roller 2212 from axial movement due to the unbalanced residual winding force of the fiber cloth.

[0053] like Figure 8 , 9As shown in 10, the force transmission component 222 is composed of a front force transmission sub-component 2221 and a rear force transmission sub-component 2222. The front force transmission sub-component 2221 is arranged in front of the first supporting roller 2212, and includes a front force transmission plate 22211 and a second front bearing 22212. The rear force transmission sub-component 2222 is arranged behind the first supporting roller 2212, and includes a rear force transmission plate 22221 and a second rear bearing 22222. The front force transmission plate 22221 is sleeved on the first rotating shaft component 2211 by means of the second front bearing 22212, and can freely perform circumferential rotation. The rear force transmission plate 22221 is also sleeved on the first rotating shaft component 2211 by means of the second rear bearing 22222, and can also freely perform circumferential rotation. The front force transmission plate 22211 and the rear force transmission plate 22221 are respectively arranged at the front and rear sides of the gravity roller assembly 223, and work together to bear the gravity roller assembly 223. In this way, on the one hand, under the premise of ensuring reliable and stable bearing of the gravity roller assembly 223, the design structure of the force transmission assembly 222 is effectively simplified, thereby reducing the difficulty of implementation and manufacturing cost; on the other hand, with the different rated feeding speeds of the fiber cloth strips, the front force transmission plate 22211 and the rear force transmission plate 22221 can be conveniently and quickly replaced, thereby changing the revolution radius of the gravity roller assembly 223, and finally ensuring that the fiber cloth strips at different speeds are always maintained in a reasonable tension state, which means that the scope of application of the fiber cloth strip feeding system is expanded.

[0054] In order to achieve the same design purpose, the gravity roller assembly 223 and the guide roller assembly 23 can also refer to the rotating roller assembly 221 for structural design, as follows:

[0055] like Fig. 9 , 10 As shown in the figure, the gravity roller assembly 223 is mainly composed of a second rotating shaft assembly 2231 and a second supporting roller 2232. The front and rear ends of the first rotating shaft assembly 2211 are respectively and detachably fixed to the front force transmission plate 22221 and the rear force transmission plate 22221. The second supporting roller 2232 is also wound around the limiting cloth strip, which is sleeved on the second rotating shaft assembly 2231 and can freely perform circumferential rotation around its central axis.

[0056] like Fig.11 , 13As shown in the figure, the guide roller assembly 23 is mainly composed of a third rotating shaft assembly 231, a third supporting roller 232, a third front bearing 233 and a third rear bearing 234. The third front bearing 233 and the third rear bearing 234 are respectively embedded in the front and rear side walls of the first bracket 21 in a one-to-one correspondence, and cooperate to achieve support for the third rotating shaft assembly 231. The third supporting roller 232 is used for winding the fiber cloth strip, and is sleeved and fixed on the third rotating shaft assembly 231.

[0057] Furthermore, by Fig.11 , 12 It can also be clearly seen from the figure that the first rotating shaft assembly 2211 is a combination, which is composed of two rotating shaft segments respectively inserted into the first front bearing 22132 and the first rear bearing 22142. And the two ends of the first supporting roller 2212 are respectively welded to achieve fixation with the two rotating shaft segments. Fig. 9 , 10 As shown in FIGS. 11 and 13 , the second rotating shaft assembly 2231 and the third rotating shaft assembly 231 also perform structural design operations with reference to the first rotating shaft assembly 2211 .

[0058] In order to avoid entanglement between the layers of the wound fiber strips during the unwinding process, the liner paper that acts as a liner needs to be wound in synchronously during the winding process of the fiber strips. In this way, a large amount of liner paper will inevitably fall off the fiber strips during the unwinding process. In traditional operations, special winding equipment is usually used to collect the liner paper, which requires high procurement costs and occupies additional production space. In view of this, Figure 3 The three-dimensional schematic diagram of the unwinding device in the fiber cloth strip feeding system suitable for the weft laying machine of the present invention is shown. It can be seen that it is mainly composed of several parts such as the second bracket 11, the unwinding component 12 and the isolation paper winding unit 13. Among them, the unwinding component 12 is supported by the second bracket 11, and the fiber cloth strip is flattened by the pulling force. The isolation paper winding unit 13 is also supported by the second bracket 11, and is arranged directly below the unwinding component 12 to collect the liner isolation paper peeled off from the fiber cloth strip. By adopting the above technical solution, the unwinding device 1 has both the fiber cloth strip unwinding function and the liner isolation paper winding function, thereby greatly simplifying the design structure of the fiber cloth strip feeding system and reducing its manufacturing cost.

[0059] like Figure 4 , 5As shown in , 6, the unloading assembly 12 is mainly composed of several parts such as the fourth rotating shaft assembly 121, the unloading tray 122, the fourth front bearing 123 and the fourth rear bearing 124. Among them, the fourth front bearing 123 and the fourth rear bearing 124 are respectively embedded in the front and rear side walls of the second bracket 11 in a one-to-one correspondence, and work together to achieve the support of the fourth rotating shaft assembly 121. The unloading tray 122 is wound with the fiber cloth strip to be unwound, and is sleeved and fixed on the fourth rotating shaft assembly 121. In this way, it is not only effectively ensured that the unloading tray 122 has good rotation sensitivity in actual application, thereby ensuring that the fiber cloth strip unloading operation can be smoothly implemented, but also effectively avoids the occurrence of axial movement of the unloading tray 122 due to the unbalanced lateral force during the unwinding process of the fiber cloth.

[0060] As is known, according to design common sense, the release paper winding unit 13 can adopt a variety of design structures to realize the collection operation of the liner release paper. However, an implementation scheme with a simple design structure, easy manufacturing and implementation, and convenient for later maintenance operations is recommended, as follows: Figure 4 , 5 As shown in , 6, the release paper winding unit 13 is mainly composed of a receiving drum 131, a fifth rotating shaft 132, a second rear circumferential rotating support part 133 and a power part 134. Among them, the second rear circumferential rotating support part 133 is assembled on the rear side wall of the second bracket 11 to support the fifth rotating shaft 132. And the fifth rotating shaft 132 is in a single-point cantilever posture. The fifth rotating shaft 132 is used to support the receiving drum 131. The fifth rotating shaft 132 is driven by the power part 134, and when the power part 134 is started, the receiving drum 131 follows the fifth rotating shaft 132 to synchronously perform circumferential rotation to collect the liner release paper peeled off from the fiber cloth strip.

[0061] Furthermore, by Figure 4 , 5 As shown in the figure, the second rear circumferential rotation support part 133 includes a second rear bearing seat 1331 and a fifth rear bearing 1332. The second rear bearing seat 1331 is detachably fixed to the rear side wall of the second bracket 11. The fifth rear bearing 1332 is embedded in the second rear bearing seat 1331 and fits with the fifth rotating shaft 132. In this way, under the premise of ensuring that the release paper winding unit 13 has a very simple design structure, it is effectively ensured that the receiving drum 131 has good rotation sensitivity in actual application, thereby ensuring that the liner release paper receiving operation can be smoothly implemented.

[0062] Depend on Figure 5As shown in the figure, the power unit 134 used to drive the fifth rotating shaft 132 is mainly composed of a support seat 1341, a rotating motor 1342 and a synchronous belt transmission mechanism 1343. Among them, the support seat 1341 is used to bear the rotating motor 1342, and it is detachably fixed to the second bracket 11. The synchronous belt transmission mechanism 1343 is used to transmit the torsional moment to the fifth rotating shaft 132, and it includes a first synchronous wheel, a second synchronous wheel and a synchronous belt that can be simultaneously mounted with the first synchronous wheel and the second synchronous wheel. The first synchronous wheel is directly driven by the rotating motor 1342, and the second synchronous wheel is mounted and fixed on the fifth rotating shaft 132. It is known that the synchronous belt transmission mechanism 1343 has no relative sliding phenomenon in actual application, and the belt length remains unchanged, with good transmission ratio stability and high transmission efficiency, so as to ensure that the receiving drum 131 can rotate smoothly and reliably, thereby realizing the timely collection of the liner isolation paper.

[0063] Furthermore, by Figure 4 , 5 As shown in 6, the release paper winding unit 12 is further provided with a rotary ejector 135. The rotary ejector 135 is used to limit the axial displacement freedom and circumferential deflection of the receiving barrel 131, and is also borne by the second bracket 11. The rotary ejector 135 is mainly composed of several parts such as a cylinder 1351, a transition shaft 1352, a second front circumferential rotation support 1353 and a front conical shaft head 1354. The cylinder 1351 is used to drive the transition shaft 1352 to perform axial displacement movement, and it is detachably inserted on the front side of the second bracket 11. With the assistance of the second front circumferential rotation support 1353, the front conical shaft head 1354 is assembled on the transition shaft 1352, and can freely perform circumferential rotation movement around its central axis. The second front circumferential rotation support 1353 is preferably a fifth front bearing 13531 assembled between the transition shaft 1352 and the front conical shaft head 1354. Under the driving force of the cylinder 1351, the front conical shaft head 1354 performs axial displacement movement forward / backward to achieve / release the contact with the front end portion 131 of the receiving barrel. Figure 4 , 5As shown in the figure, it can be clearly seen that the front end surface of the fifth rotating shaft 132 continues to extend forward to form a rear conical push-up section 1321. The rear conical push-up section 1321 is arranged relative to the above-mentioned front conical shaft head 1354, and cooperates to support the material receiving drum 131. In practical applications, the front conical shaft head 1354 and the rear conical push-up section 1321 cooperate to achieve the support of the winding drum 131. In this way, on the one hand, the difficulty of assembling the winding drum 131 is effectively reduced, and after the liner release paper is rolled up, it is convenient and quick to perform a new operation on the fully loaded winding drum 131; on the other hand, the winding drum 131 is always kept in a stable posture during the circumferential rotation process, which is specifically manifested in that the radial runout and axial movement are small, and finally ensure that the winding process of the liner release paper can be implemented smoothly and steadily.

[0064] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fiber strip feeding system suitable for a weft laying machine, comprising a reeling device and a tensioning device; the reeling device is arranged upstream of the tensioning device, and the two cooperate to continuously input the fiber strip to the weft laying machine; the reeling device is used to unwind the fiber strip roll and feed it to the tensioning device, characterized in that: The tensioning device comprises a first bracket, a tensioning unit and a guide roller assembly; the tensioning unit and the guide roller assembly are both supported by the first bracket; the guide roller assembly is arranged downstream of the tensioning unit to directionally transport the fiber cloth strips transferred from the tensioning unit to the weft laying machine; the tensioning unit comprises a rotating roller assembly, a force transmission assembly and a gravity roller assembly; the rotating roller assembly is installed on the first bracket and can freely rotate around its central axis; the gravity roller assembly is arranged on one side of the rotating roller assembly through the force transmission assembly, and can freely rotate around its own central axis, and can also freely revolve around the central axis of the rotating roller assembly; The rotating roller assembly includes a first rotating shaft assembly, a first supporting roller, a front circumferential rotating support portion and a first rear circumferential rotating support portion; the front circumferential rotating support portion and the first rear circumferential rotating support portion are both assembled on the first bracket and are arranged opposite to each other, and cooperate to achieve support for the first rotating shaft assembly; the first supporting roller is used for winding the fiber cloth strip, and is sleeved and fixed on the first rotating shaft assembly; The guide roller assembly includes a third rotating shaft assembly, a third supporting roller, a third front bearing and a third rear bearing; the third front bearing and the third rear bearing are respectively and one by one embedded in the front and rear side walls of the first bracket, and cooperate to achieve support for the third rotating shaft assembly; the third supporting roller is used for winding the fiber cloth strip, and is sleeved and fixed on the third rotating shaft assembly.

2. The fiber strip feeding system for a weft laying machine according to claim 1, characterized in that: The front circumferential rotation support part includes a first front bearing seat and a first front bearing; the first front bearing seat is detachably fixed to the front side wall of the first bracket; the first front bearing is embedded in the first front bearing seat and fits with the first rotating shaft assembly; the first rear circumferential rotation support part includes a first rear bearing seat and a first rear bearing; the first rear bearing seat is detachably fixed to the rear side wall of the first bracket; the first rear bearing is embedded in the first rear bearing seat and fits with the first rotating shaft assembly.

3. The fiber strip feeding system for a weft laying machine according to claim 2, characterized in that: The force transmission component is composed of a front force transmission sub-component and a rear force transmission sub-component; wherein, the front force transmission sub-component is arranged in front of the first supporting roller, and includes a front force transmission plate and a second front bearing; the rear force transmission sub-component is arranged behind the first supporting roller, and includes a rear force transmission plate and a second rear bearing; the front force transmission plate is mounted on the first rotating shaft component by means of the second front bearing, and can freely perform circumferential rotation movement; the rear force transmission plate is mounted on the first rotating shaft component by means of the second rear bearing, and can also freely perform circumferential rotation movement; the front force transmission plate and the rear force transmission plate are respectively arranged on the front and rear sides of the gravity roller component, and work together to support the gravity roller component.

4. The fiber strip feeding system for a weft laying machine according to claim 3, characterized in that: The gravity roller assembly includes a second rotating shaft assembly and a second supporting roller; the front and rear ends of the first rotating shaft assembly are respectively and detachably fixed to the front force transmission plate and the rear force transmission plate in a one-to-one correspondence; the second supporting roller is also for the limiting cloth strip to be wound around, it is sleeved on the second rotating shaft assembly, and can freely perform circumferential rotational motion around its central axis.

5. The fiber strip feeding system for a weft laying machine according to any one of claims 1 to 4, characterized in that: The unwinding device includes a second bracket, a material unwinding component and a release paper winding unit; the material unwinding component is supported by the second bracket and flattens the fiber cloth strip with the aid of a pulling force; the release paper winding unit is also supported by the second bracket and is used in conjunction with the release paper winding unit to collect the liner release paper peeled off the fiber cloth strip.

6. The fiber strip feeding system for a weft laying machine according to claim 5, characterized in that: The unloading assembly includes a fourth rotating shaft assembly, a unloading tray, a fourth front bearing and a fourth rear bearing; the fourth front bearing and the fourth rear bearing are respectively and one by one embedded in the front and rear side walls of the second bracket, and cooperate to achieve support for the fourth rotating shaft assembly; the unloading tray is wound with the fiber cloth strip to be unwound, and is sleeved and fixed on the fourth rotating shaft assembly.

7. The fiber strip feeding system for a weft laying machine according to claim 5, characterized in that: The release paper winding unit includes a receiving drum, a fifth rotating shaft, a second rear circumferential rotating support part and a power part; the second rear circumferential rotating support part is assembled on the rear side wall of the second bracket to support the fifth rotating shaft; and the fifth rotating shaft presents a single-point cantilever posture; the fifth rotating shaft is used to support the receiving drum; the fifth rotating shaft is driven by the power part, and when the power part is started, the receiving drum follows the five rotating shafts to synchronously perform circumferential rotation movement to collect the liner release paper peeled off from the fiber cloth strip.

8. The fiber strip feeding system for a weft laying machine according to claim 7, characterized in that: The second rear circumferential rotation support portion includes a second rear bearing seat and a fifth rear bearing; the second rear bearing seat is detachably fixed to the rear side wall of the second bracket; the fifth rear bearing is embedded in the second rear bearing seat and fits with the fifth rotation axis.

9. The fiber strip feeding system for a weft laying machine according to claim 7, characterized in that: The power unit includes a support base, a rotating motor and a synchronous belt transmission mechanism; the support base is used to bear the rotating motor and is detachably fixed to the second bracket; the synchronous belt transmission mechanism is used to transmit torsional torque toward the fifth rotating shaft, and includes a first synchronous wheel, a second synchronous wheel and a synchronous belt that can be simultaneously mounted with the first synchronous wheel and the second synchronous wheel; the first synchronous wheel is directly driven by the rotating motor, and the second synchronous wheel is mounted on and fixed to the fifth rotating shaft.

10. The fiber strip feeding system for a weft laying machine according to claim 7, characterized in that: The release paper winding unit also includes a rotary ejector needle portion; the rotary ejector needle portion is used to limit the axial displacement freedom and circumferential deflection of the receiving drum, and is also borne by the second bracket.

11. The fiber strip feeding system for a weft laying machine according to claim 10, characterized in that: The rotary ejector part includes a linear motion element, a transition shaft, a second front circumferential rotation support part and a front conical shaft head; the linear motion element is used to drive the transition shaft to perform axial displacement movement, and is detachably inserted on the front side of the second bracket; With the assistance of the second front circumferential rotation support, the front conical shaft head is assembled on the transition shaft and can freely perform circumferential rotation around its central axis; Under the action of the driving force of the linear motion element, the front conical shaft head performs axial displacement movement forward / backward to achieve / release the contact with the front end of the receiving barrel.

12. The fiber strip feeding system for a weft laying machine according to claim 11, characterized in that: The second front circumferential rotation support portion is a fifth front bearing assembled between the transition shaft and the front tapered shaft head.

13. The fiber strip feeding system for a weft laying machine according to claim 11, characterized in that: The front end surface of the fifth rotating shaft continues to extend forward to form a rear conical pushing section; the rear conical pushing section is arranged opposite to the front conical shaft head and cooperates with each other to support the receiving barrel.

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