CN114772342A - Fiber cloth strip feeding system suitable for weft laying machine - Google Patents

Abstract

The invention relates to a fiber cloth strip feeding system suitable for a weft laying machine, which comprises an unreeling device and a tensioning device. The fiber cloth strip is through unwinding device exhibition flat, the back of sending out, and in proper order around through rotatory roller set spare, gravity roller set spare and guide roller set spare. In the process of feeding the fiber cloth strips, the rotating roller assembly, the gravity roller assembly and the guide roller assembly perform circumferential rotating motion around the central axis of the fiber cloth strips all the time under the action of friction force of the fiber cloth strips, and the gravity roller assembly tensions the fiber cloth strips under the action of self gravity of the gravity roller assembly, so that the fiber cloth strips are maintained in a reasonable tensioning state all the time, and then the fiber cloth strips are continuously and stably fed into the weft laying machine, and the weft laying process is ensured to be smoothly implemented. In addition, the deflection angle of the gravity roller assembly can be changed along with the change of the feeding speed of the fiber cloth strips in a self-adaptive manner, so that the phenomenon that the fiber cloth strips are broken due to the action of excessive tension is avoided.

Description

Fiber cloth strip feeding system suitable for weft laying machine

Technical Field

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

Background

The carbon fiber is a novel material with the carbon content of more than 95 percent and has the characteristics of high strength and high modulus. The carbon fiber is formed by stacking organic fibers such as flake graphite microcrystals along the axial direction of the fiber, and the microcrystalline graphite material obtained by carbonization and graphitization treatment not only has the intrinsic characteristics of a carbon material, but also has the soft processability of textile fiber.

The fiber cloth is woven by carbon fibers, and the production process is as follows: the method comprises the steps of flattening carbon fiber bundles into flat-laid monofilament carbon fibers by a yarn unfolding machine, then bonding and forming into fiber cloth strips by using glue, then performing weft laying operation on the fiber cloth strips by using a weft laying machine, and then performing warp-weft cross weaving operation on the weft-laid fiber cloth strips by using a warp knitting machine to finally form the fiber cloth.

In the actual working process of the weft laying machine, the weft pulling mechanism is required to pull the fiber cloth strips to be cut to pass through the fiber cloth strip cutting mechanism, the left feeding mechanism and the right feeding mechanism in sequence. The fiber cloth strip cutting mechanism cuts off the tensioned fiber cloth strips, then the left feeding mechanism and the right feeding mechanism synchronously act to carry out weft laying operation on the tensioned fiber cloth strips, at the moment, two ends of the fiber cloth strips are respectively pressed and fixed into the left weft laying mechanism and the right weft laying mechanism, and the left weft laying mechanism and the right weft laying mechanism carry out synchronous displacement motion to send the weft laying fiber cloth strips into the warp knitting machine to carry out warp and weft knitting operation.

In the prior art, a fiber cloth strip feeding system mainly comprises an unwinding device and a tensioning device. Wherein the unwinding device is arranged upstream of the tensioning device and both cooperate to continuously feed the strip of fibrous fabric towards the weft laying machine. The unwinding device is used for unwinding the fiber cloth strip roll and feeding the fiber cloth strip roll to the tensioning device.

It is known that, according to common design knowledge, the tensioning device can take various designs to achieve tensioning of the fiber cloth strip, such as: chinese patent CN110129987A discloses a yarn tensioning mechanism of a warp knitting machine, which comprises a frame connected with the warp knitting machine by bolts, a distance sensor for detecting the sagging amplitude of the yarn, a tension wheel for winding the yarn, a speed-limiting mechanism for controlling the rotation speed of the tension wheel, and a controller for controlling the operation of the speed-limiting mechanism. The coaxial welding of take-up pulley has the pivot, and the frame still is connected with the pivoted motor of drive take-up pulley, and the motor uses the bolt fastening with the frame, and it is connected with the pivot through the speed reducer, and the pivot is connected with the frame upper end rotation, and the yarn twines two rings in the take-up pulley lateral wall. The distance sensor is fixed on the upper end surface of the frame by using bolts, the detection end of the distance sensor faces the lower end of the yarn, and the distance sensor is electrically connected with the controller. The working principle of the yarn tensioning mechanism of the warp knitting machine is roughly as follows: when the weaving speed of tricot machine reduces, and the take-up pulley still can produce the rotation under the effect of motor, pile up too much along with the take-up pulley keeps away from the yarn advancing direction one side this moment, the yarn can move down under the effect of gravity, distance sensor detects the distance between yarn and the distance sensor and is less than distance sensor preset's threshold value this moment, distance sensor feedback signal to controller, the work of controller control speed limiting mechanism slows down the slew velocity of take-up pulley, thereby the speed that the yarn removed has been reduced, make the yarn keep the tensioning, later the yarn no longer flagging, thereby make the difficult great change that takes place of the tensioning range of yarn. Although the technical scheme can be theoretically feasible, the practical application effect is extremely poor, and the reason is that: the stacking thickness of the yarn on the tension wheel is influenced by various factors such as the outer diameter of the tension wheel, the specification of the yarn, the winding arrangement mode and the tension degree, and the yarn in the feeding process is difficult to be always kept at a reasonable and stable tension degree. And at the initial stage of starting the warp knitting machine, the yarns cannot be wound on the tension wheel in time, so that the single line sags, and the distance sensor further sends a control signal to the speed limiting mechanism in error. Also as the chinese patent CN210763621U discloses a yarn tensioning device, comprising a transverse bracket, wherein the bottom side of the transverse bracket is fixedly connected with a U-shaped frame, both ends of the front side of the transverse bracket are respectively provided with a winding wheel and a yarn passing wheel, a large sliding block is slidably mounted in the U-shaped frame, a wheel shaft is arranged on the large sliding block, a tensioning wheel is rotatably sleeved on the wheel shaft, and the winding wheel, the tensioning wheel and the yarn passing wheel are sequentially connected with the same yarn in a transmission manner; be equipped with hollow groove on the big slider, sliding mounting has little slider in the hollow groove, and the take-up pulley is located the front side of little slider and big slider, the one end fixed connection of shaft is on little slider, fixedly connected with spring one between the top of little slider and the top inner wall of hollow groove, fixedly connected with spring two between the bottom of little slider and the bottom inner wall of hollow groove, the bottom of big slider is rotated and is connected with the screw rod, be provided with the screw hole on the bottom inner wall of U type frame, the bottom of screw rod runs through the screw hole and passes through threaded connection with the screw hole, and the fixed knob that is provided with on the bottom of screw rod. Through the application of the technical scheme, although the yarn in the feeding process can be effectively ensured to be always kept in a reasonable tensioning state, when the tensioning degree of the yarn needs to be adjusted, the screw rod needs to be frequently rotated to raise or lower the relative height position of the tensioning wheel, the application operation is very inconvenient, the rotating operation of the screw rod completely depends on the experience of workers, the requirements on the quality and the work responsibility of the workers are high, and the popularization and the promotion are not facilitated. Thus, a skilled person is required to solve the above problems.

Disclosure of Invention

In view of the above-mentioned problems and drawbacks, the present invention provides a fiber cloth strip feeding system for a weft insertion machine, which is obtained by collecting relevant information, evaluating and considering the relevant information, and performing experiments and modifications by a skilled person engaged in the industry.

In order to solve the technical problem, the invention relates to a fiber cloth strip feeding system suitable for a weft laying machine, which comprises an unreeling device and a tensioning device. The unwinding device is arranged upstream of the tensioning device and both cooperate to continuously feed the strip of fibrous fabric towards the weft laying machine. The unwinding device is used for unwinding the fiber cloth strip roll and feeding the fiber cloth strip roll to the tensioning device. 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 convey the fiber cloth strip transferred via 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 mounted on the first bracket and can freely perform self-rotation around the central axis thereof. The gravity roller assembly is arranged at one side of the rotating roller assembly by the force transmission assembly, and can freely perform self-rotation movement around the central axis of the gravity roller assembly and can also freely perform revolution movement around the central axis of the rotating roller assembly.

As a further improvement of the technical scheme of the invention, the rotating roller assembly comprises a first rotating shaft assembly, a first material supporting roller, a front circumferential rotating supporting part and a first rear circumferential rotating supporting part. The front circumferential rotation supporting part and the first rear circumferential rotation supporting part are assembled on the first bracket and are oppositely arranged and cooperate to realize the support of the first rotating shaft assembly. The first material supporting roller is used for winding the fiber cloth strip, and is sleeved and fixed on the first rotating shaft component.

As a further improvement of the technical scheme of the invention, the front circumferential rotation supporting part comprises a first front bearing seat and a first front bearing. The first front bearing seat is detachably fixed on the front side wall of the first support. The first front bearing is embedded on the first front bearing seat and is sleeved with the first rotating shaft assembly. The first rear circumferential rotation supporting part comprises a first rear bearing seat and a first rear bearing. The first rear bearing seat is detachably fixed on the rear side wall of the first support. The first rear bearing is embedded on the first rear bearing seat and is sleeved with the first rotating shaft assembly.

As a further improvement of the technical scheme of the invention, the force transmission assembly is composed of a front force transmission subassembly and a rear force transmission subassembly. The front force transmission subassembly is arranged in front of the first material supporting roller and comprises a front force transmission plate and a second front bearing. The rear force transmission subassembly is arranged behind the first material supporting roller and comprises a rear force transmission plate and a second rear bearing. The preposed force transmission plate is sleeved on the first rotating shaft component by the second preposed bearing and can freely execute circumferential rotating motion. The rear force transmission plate is sleeved on the first rotating shaft assembly through the second rear bearing and can also freely execute circumferential rotating motion. The front force transmission plate and the rear force transmission plate are respectively arranged at the front side and the rear side of the gravity roller assembly and cooperate to bear the gravity roller assembly.

As a further improvement of the technical scheme of the invention, the gravity roller assembly comprises a second rotating shaft assembly and a second material supporting roller. The front end part and the rear end part of the first rotating shaft component are respectively fixed with the front force transmission plate and the rear force transmission plate in a one-to-one correspondence and in a detachable mode. The second material supporting roller is also used for the limiting cloth strip to pass through, is sleeved on the second rotating shaft assembly and can freely perform circumferential rotating motion around the central axis of the second rotating shaft assembly.

As a further improvement of the technical scheme of the invention, the guide roller assembly comprises a third rotating shaft assembly, a third material supporting roller, a third front bearing and a third rear bearing. The third front bearing and the third rear bearing are respectively embedded on the front side wall and the rear side wall of the first support in a one-to-one correspondence manner, and cooperate with each other to support the third rotating shaft assembly. The third material supporting roller is used for winding the fiber cloth strip, and is sleeved and fixed on the third rotating shaft component.

As a further improvement of the technical scheme of the invention, the unreeling device comprises a second support, an emptying assembly and an isolation paper reeling unit. The discharging assembly is supported by the second support and is used for flattening the fiber cloth strips under the action of pulling force. The isolating paper winding unit is also supported by the second support and is matched with the winding device for collecting the liner isolating paper stripped from the fiber cloth strip.

As a further improvement of the technical scheme of the invention, the discharging assembly comprises a fourth rotating shaft assembly, a discharging disc, a fourth front bearing and a fourth rear bearing. The fourth front bearing and the fourth rear bearing are respectively embedded on the front side wall and the rear side wall of the second support in a one-to-one correspondence manner, and cooperate to support the fourth rotating shaft assembly. The fiber cloth strip to be unreeled is wound on the unreeling disc and sleeved and fixed on the fourth rotating shaft assembly.

As a further improvement of the technical scheme of the invention, the isolating paper winding unit comprises a material collecting barrel, a fifth rotating shaft, a second rear circumferential rotation supporting part and a power part. The second rear circumferential rotation support part is assembled on the rear side wall of the second bracket to support the fifth rotation shaft. And the fifth rotation axis assumes a single pivot cantilever attitude. The fifth rotating shaft is used for bearing the collecting barrel. The fifth rotating shaft is driven by the power part, and after the power part is started, the material receiving cylinder synchronously executes circumferential rotation motion along with the fifth rotating shaft so as to receive the liner release paper peeled from the fiber cloth strips.

As a further improvement of the technical scheme of the invention, the second rear circumferential rotation supporting part comprises a second rear bearing seat and a fifth rear bearing. The second rear bearing seat is detachably fixed on the rear side wall of the second bracket. The fifth rear bearing is embedded on the second rear bearing seat and is sleeved with the fifth rotating shaft.

As a further improvement of the technical scheme of the invention, the power part comprises a supporting seat, a rotating motor and a synchronous belt transmission mechanism. The supporting base is used for bearing the rotating motor and is detachably fixed on the second support. The synchronous belt transmission mechanism is used for transmitting the torsion moment to the fifth rotating shaft and comprises a first synchronous wheel, a second synchronous wheel and a synchronous belt which can be sleeved with the first synchronous wheel and the second synchronous wheel simultaneously. The first synchronizing wheel is directly driven by the rotating motor, and the second synchronizing wheel is sleeved on and fixed on the fifth rotating shaft.

As a further improvement of the technical scheme of the invention, the isolating paper winding unit also comprises a rotary thimble part. The rotary thimble part is used for limiting the axial displacement freedom degree and the circumferential deflection of the material collecting barrel and is also borne by the second bracket.

As a further improvement of the technical scheme of the invention, the rotary thimble part comprises a linear motion element, a transition shaft, a second front circumferential rotation supporting part and a front conical shaft head. The linear motion element is used for driving the transition shaft to perform axial displacement motion and is detachably inserted on the front side of the second bracket. Under the assistance of the second preposed circumferential rotation supporting part, the preposed conical shaft head is assembled on the transition shaft and can freely perform circumferential rotation movement around the central axis of the transition shaft. Under the action of the driving force of the linear motion element, the front conical shaft head performs axial displacement motion forwards/backwards so as to realize/remove the jacking touch on the front end part of the material receiving cylinder.

As a further improvement of the technical solution of the present invention, the second forward circumferential rotation supporting part is a fifth forward bearing assembled between the transition shaft and the forward tapered shaft head.

As a further improvement of the technical scheme of the invention, the front end surface of the fifth rotating shaft extends forwards continuously to form a rear conical ejection section. The rear conical ejection section is arranged opposite to the front conical shaft head and cooperates with the front conical shaft head to bear the material collecting barrel.

Through adopting above-mentioned technical scheme to set up, the fibre cloth is via unwinding device exhibition flat, the back of seeing off, and according to the preface around through rotatory roller set spare, gravity roller set spare and guide roll set spare. In the process of feeding the fiber cloth strips, the rotating roller assembly, the gravity roller assembly and the guide roller assembly perform circumferential rotating motion around the central axis of the fiber cloth strips all the time under the action of friction force of the fiber cloth strips, and the gravity roller assembly tensions the fiber cloth strips under the action of self gravity of the gravity roller assembly, so that the fiber cloth strips are maintained in a reasonable tensioning state all the time, the fiber cloth strips are further guaranteed to be continuously and stably fed into the weft laying machine, and the weft laying process is guaranteed to be smoothly implemented.

In practical application, the fiber cloth strip feeding system suitable for the weft laying machine has the following beneficial effects:

1) on the premise of ensuring the reasonable tensioning of the fiber cloth strips, the fiber cloth strip feeding system has a very simple design structure, is beneficial to executing manufacturing implementation operation, and has lower overall manufacturing cost;

2) the fiber cloth strip feeding system can effectively tension the fiber cloth strips by utilizing the self weight of the gravity roller assembly, and no artificial interference is needed in the whole process;

3) along with the change of the feeding speed of the fiber cloth strips, the deflection angle of the gravity roller assembly (namely the revolution angle of the gravity roller assembly relative to the rotating roller assembly) is also changed in a self-adaptive manner, so that the fiber cloth strips are ensured to be always maintained in a reasonable tension state, and the phenomenon that the fiber cloth strips are pulled apart due to unreasonable tension is effectively and thoroughly avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of the actual application of a fibre cloth strip supply system suitable for a weft laying machine according to the invention.

Fig. 2 is a schematic perspective view of a fiber cloth strip feeding system suitable for a weft laying machine according to the present invention.

Fig. 3 is a perspective view of a unwinding device in a fibre strip feeding system for a weft laying machine according to the invention.

Fig. 4 is a front view of fig. 3.

Fig. 5 is a sectional view a-a of fig. 4.

Fig. 6 is a perspective view from another perspective of a unwinding device in a fibre cloth strip feeding system for a weft laying machine according to the invention.

Fig. 7 is a schematic perspective view of a tensioning device in a fibre cloth strip feeding system suitable for a weft laying machine according to the invention.

Fig. 8 is a schematic perspective view of a tensioning unit of a fibre cloth strip supply system according to the invention, which is suitable for a weft laying machine.

Fig. 9 is a front view of fig. 8.

Fig. 10 is a sectional view taken along line B-B of fig. 9.

Fig. 11 is a front view of fig. 7.

Fig. 12 is a cross-sectional view C-C of fig. 11.

Fig. 13 is a cross-sectional view taken along line D-D of fig. 11.

1-an unwinding device; 11-a second support; 12-a discharge assembly; 121-a fourth rotating shaft assembly; 122-a discharge tray; 123-a fourth front bearing; 124-a fourth rear bearing; 13-a release paper winding unit; 131-a material collecting barrel; 132-a fifth axis of rotation; 1321-rear conical ejector section; 133-a second aft circumferential rotational support; 1331-a second rear bearing mount; 1332-fifth rear bearing; 134-a power section; 1341-a support base; 1342-a rotating electrical machine; 1343-synchronous belt drive mechanism; 135-rotating the thimble portion; 1351-cylinder; 1352-a transition shaft; 1353-a second forward circumferential rotational support; 13531-fifth front bearing; 1354-front conical shaft head; 2-a tensioning device; 21-a first scaffold; 22-a tensioning unit; 221-a rotating roll assembly; 2211-a first rotating shaft assembly; 2212-first carrier roller; 2213-front circumferential rotation support; 22131-first front bearing mount; 22132-first front bearing; 2214-a first aft circumferential rotation support; 22141-first rear bearing mount; 22142-first rear bearing; 222-a force transfer assembly; 2221-a front force transfer subassembly; 22211-front force transmission plate; 22212 — second front bearing; 2222-a rear force transfer subassembly; 22221-rear force transmission plate; 22222-second rear bearing; 223-a gravity roller assembly; 2231-a second rotating shaft assembly; 2232-a second carrier roller; 23-a guide roller assembly; 231-a third rotary shaft assembly; 232-a third material supporting roller; 233-a third front bearing; 234-third rear bearing.

Detailed Description

In the description of the present invention, it should be understood that the terms "front", "back", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Fig. 1 shows a schematic view of a practical application state of a fiber cloth strip feeding system suitable for a weft laying machine in the invention, and the weft laying machine for weaving fiber cloth mainly comprises the 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, a weft pulling mechanism and the like. The fiber cloth strip feeding system is used for flattening the fiber cloth roll and feeding the fiber cloth roll 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, the motion process is kept synchronous, and the left feeding mechanism and the right feeding mechanism are matched with the fiber cloth strip cutting mechanism to be applied so as to receive the fiber cloth strips cut off by the fiber cloth strip cutting mechanism and press the left end part and the right end part of the fiber cloth strip section into the left weft laying mechanism and the right weft laying mechanism in a one-to-one correspondence manner. The weft pulling mechanism is matched with the fiber cloth strip feeding system, and is used for pulling the fiber cloth strips released by the fiber cloth strip feeding system and guiding the fiber cloth strips to the right-arranged feeding mechanism. In the actual working process of the weft laying machine, the fiber cloth strips to be cut are pulled by the weft pulling mechanism to sequentially pass through the fiber cloth strip cutting mechanism, the left feeding mechanism and the right feeding mechanism. The fiber cloth strip cutting mechanism cuts off the tensioned fiber cloth strips, then the left feeding mechanism and the right feeding mechanism synchronously act (perform displacement motion along the front-back direction) to perform weft laying operation on the broken fiber cloth strips, at the moment, two ends of the fiber cloth strips are respectively pressed into and fixed in the left weft laying mechanism and the right weft laying mechanism, and the left weft laying mechanism and the right weft laying mechanism perform synchronous displacement motion to feed the weft laying fiber cloth strips into a warp knitting machine to perform warp and weft knitting operation, and finally fiber cloth is formed.

In the following, the disclosure of the present invention is further described in detail with reference to the specific embodiments, and fig. 2 shows a schematic perspective view of a fiber cloth strip feeding system suitable for a weft laying machine according to the present invention, which is mainly composed of an unwinding device 1 and a tensioning device 2. Wherein the unwinding device 1 is arranged upstream of the tensioning device 2 and both cooperate to continuously feed the strip of fibrous fabric towards the weft laying machine. The unwinding device 1 is used for unwinding a fiber cloth strip roll and feeding the fiber cloth strip roll to the tensioning device 2.

Fig. 7 shows a schematic perspective view of a tensioning device in a fibre strip feed system according to the invention for a weft laying machine, which is composed mainly of a first frame 21, a tensioning unit 22 and a guide roller assembly 23. Wherein the tension unit 22 and the guide roller assembly 23 are both supported by the first bracket 21. A guide roller assembly 23 is arranged downstream of the tensioning unit 22 to convey the fibre cloth strip turned in via the tensioning unit 22 directionally to the weft laying machine. As shown in fig. 8, the tension unit 22 includes a rotating roller assembly 221, a force transmitting assembly 222, and a gravity roller assembly 223. The rotating roller assembly 221 is mounted on the first bracket 21 and can freely perform self-rotation about its central axis. The gravity roller assembly 223 is disposed at one side of the rotation roller assembly 221 by means of the force transmission assembly 222, and it can freely perform a self-rotation motion around its central axis, and can freely perform a revolution motion around the central axis of the rotation roller assembly 221.

In the actual operation of the weft laying machine, the fiber cloth strip is flattened by the unwinding device 1, is sent out, and sequentially passes through the rotating roller assembly 221, the gravity roller assembly 223 and the guide roller assembly 23. In the process of feeding the fiber cloth strips, the rotating roller assembly 221, the gravity roller assembly 223 and the guide roller assembly 23 perform circumferential rotating motion around the central axis of the fiber cloth strips all the time under the action of friction force of the fiber cloth strips, and the gravity roller assembly 223 tensions the fiber cloth strips under the action of self gravity of the gravity roller assembly 223, so that the fiber cloth strips are maintained in a reasonable tensioning state all the time, and then the fiber cloth strips are continuously and stably fed into the weft laying machine, and the weft laying process is smoothly implemented.

In practical application, the fiber cloth strip feeding system suitable for the weft laying machine has the following beneficial effects:

1) on the premise of ensuring the reasonable tensioning of the fiber cloth strips, the fiber cloth strip feeding system has a very simple design structure, is beneficial to executing manufacturing implementation operation, and has lower overall manufacturing cost;

2) the fiber cloth strip feeding system has the advantages that the effective tensioning of the fiber cloth strips can be realized by utilizing the self weight of the gravity roller assembly 223, and the whole process does not need manual interference.

In addition, it should be emphasized that, along with the change of the feeding speed of the fiber cloth strip, the deflection 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) is also adaptively changed to ensure that the fiber cloth strip is always maintained in a reasonable tension state, thereby effectively and completely preventing the fiber cloth strip from being torn off due to the unreasonable tension.

As a further refinement of the above-described structure of the rotating roller assembly, as shown in fig. 8, 9 and 10, the rotating roller assembly 221 is mainly composed of several parts, such as a first rotating shaft assembly 2211, a first backing roller 2212, a front circumferential rotation support 2213, and a first rear circumferential rotation support 214. The forward and backward rotation supports 2213 and 2214 are assembled on the first bracket 21 and face each other, and cooperate to support the first rotating shaft assembly 2211. The first material supporting roller 2212 is used for the fiber cloth strip to wind around, and is sleeved and fixed on the first rotating shaft assembly 2211. As shown in fig. 11, 12, the forward circumferential rotation support 2213 is mainly composed of a first forward bearing seat 22131 and a first forward bearing 22132. The first front bearing housing 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 is sleeved with the first rotating shaft assembly 2211. The first rear circumferential rotation support 2214 is mainly constituted by a first rear bearing block 22141 and a first rear bearing 22142. The first rear bearing housing 22142 is detachably fixed to the rear side wall of the first bracket 21. The first rear bearing 22142 is embedded on the first rear bearing block 22141 and is also sleeved with the first rotating shaft assembly 2211. Therefore, the first material supporting roller 2212 is effectively ensured to have good rotation sensitivity in practical application, and the phenomenon that the first material supporting roller 2212 axially moves due to the action of uneven residual winding force of the fiber cloth is effectively avoided.

As shown in fig. 8, 9, 10, the force transmission assembly 222 is comprised of a front force transmission subassembly 2221 and a rear force transmission subassembly 2222. The front force transmission subassembly 2221 is arranged in front of the first material supporting roller 2212, and comprises a front force transmission plate 22211 and a second front bearing 22212. A rear force transfer subassembly 2222 is disposed behind the first stripper roll 2212, which includes a rear force transfer plate 22221 and a second rear bearing 22222. The front force transmission plate 22221 is sleeved on the first rotating shaft assembly 2211 by the second front bearing 22212, and can freely perform circumferential rotation motion. The rear force transmission plate 22221 is also sleeved on the first rotating shaft assembly 2211 through the second rear bearing 22222, and can also freely perform circumferential rotation. The front and rear force transfer plates 22211 and 22221 are disposed at the front and rear sides of the gravity roller assembly 223, respectively, and cooperate to burden the gravity roller assembly 223. Therefore, on the one hand, on the premise of ensuring reliable and stable burden on the force transfer roller component 223, the design structure of the force transfer component 222 is effectively simplified, and further the implementation difficulty and the manufacturing cost are reduced; on the other hand, along with the difference of the rated feeding speed of the fiber cloth strip, the replacement operation can be conveniently and quickly performed on the front force transmission plate 22211 and the rear force transmission plate 22221, so as to change the revolution radius of the gravity roller assembly 223, and finally ensure that the fiber cloth strip in each speed state is always maintained in a reasonable tension state, which means the expansion of the application range of the fiber cloth strip feeding system.

For the same design purpose, the gravity roller assembly 223 and the guide roller assembly 23 can also perform structural design with reference to the rotating roller assembly 221, as follows:

as shown in fig. 9 and 10, the gravity roller assembly 223 is mainly composed of a second rotating shaft assembly 2231, a second carrier roller 2232, and the like. The front and rear end portions of the first rotating shaft assembly 2211 are detachably fixed to the front force transmission plate 22221 and the rear force transmission plate 22221 in a one-to-one correspondence manner. The second material supporting roller 2232 is also used for the cloth strip to pass around, and is sleeved on the second rotating shaft component 2231 and can freely perform the circumferential rotation around the central axis thereof.

As shown in fig. 11 and 13, the guide roller assembly 23 is mainly composed of a third rotating shaft assembly 231, a third material supporting roller 232, a third front bearing 233, a third rear bearing 234, and the like. The third front bearings 233 and the third rear bearings 234 are respectively embedded on the front and rear sidewalls of the first bracket 21 in a one-to-one correspondence, and cooperate to support the third rotating shaft assembly 231. The third material supporting roller 232 is used for the fiber cloth strip to wrap around, and is sleeved and fixed on the third rotating shaft assembly 231.

As can be seen clearly in fig. 11 and 12, the first rotating shaft assembly 2211 is a combined unit, which is composed of two rotating shaft segments inserted into the first front bearing 22132 and the first rear bearing 22142, respectively. And two end parts of the first material supporting roller 2212 are respectively fixed with the two rotary shaft sections in a welding mode. As shown in fig. 9, 10, 11, and 13, the second and third rotating shaft assemblies 2231 and 231 also perform structural design operations with reference to the first rotating shaft assembly 2211.

In order to avoid the entanglement problem between the wound fiber cloth layers in the unwinding process, a liner release paper serving as a liner release paper needs to be synchronously wound in the process of performing the winding operation on the fiber cloth. Therefore, a large amount of liner release paper is bound to be separated from the fiber cloth strip in the unwinding process. In the traditional operation, a special winding device is usually matched to collect the liner isolation paper, so that higher purchase cost needs to be invested, and an additional production field needs to be occupied. In view of this, fig. 3 shows a schematic perspective view of a unwinding device in a fiber cloth strip feeding system of a weft insertion machine according to the present invention, which is mainly composed of a second frame 11, a unwinding assembly 12, and a release paper winding unit 13. The discharging component 12 is supported by the second support 11, and is used for flattening the fiber cloth strips under the action of pulling force. The release paper winding unit 13 is also supported by the second support 11 and disposed right below the unwinding assembly 12 to collect the release paper liner peeled off from the fiber cloth strip. By adopting the technical scheme, the unreeling device 1 has the functions of unreeling the fiber cloth strips and reeling the liner isolation paper, so that the design structure of a fiber cloth strip feeding system is greatly simplified, and the manufacturing cost is reduced.

As shown in fig. 4, 5 and 6, the discharging assembly 12 is mainly composed of a fourth rotating shaft assembly 121, a discharging tray 122, a fourth front bearing 123, a fourth rear bearing 124, and so on. The fourth front bearing 123 and the fourth rear bearing 124 are respectively embedded on the front and rear sidewalls of the second bracket 11 in a one-to-one correspondence, and cooperate to support the fourth rotating shaft assembly 121. The fiber cloth strips to be unreeled are wound on the unreeling tray 122 and are sleeved and fixed on the fourth rotating shaft assembly 121. Therefore, the material placing tray 122 is effectively ensured to have good rotation sensitivity in practical application, so that the material placing operation of the fiber cloth strips is ensured to be smoothly carried out, and the phenomenon that the material placing tray 122 axially moves due to unbalanced lateral force in the fiber cloth unreeling process is effectively avoided.

As is known, the release paper winding unit 13 may adopt various design structures according to common design knowledge to realize the operation of winding the liner release paper, but an embodiment is proposed herein that has a simple design structure, is easy to manufacture and implement, and facilitates the maintenance operation later, as follows: as shown in fig. 4, 5, and 6, the separator winding unit 13 is mainly composed of a receiving cylinder 131, a fifth rotating shaft 132, a second rear circumferential rotation support 133, and a power unit 134. The second rear circumferential rotation supporting portion 133 is assembled on the rear sidewall of the second bracket 11 to support the fifth rotation shaft 132. And the fifth rotation shaft 132 assumes a single fulcrum cantilever attitude. The fifth rotating shaft 132 is used to support the material receiving barrel 131. The fifth rotating shaft 132 is driven by the power part 134, and when the power part 134 is activated, the material receiving cylinder 131 performs a circumferential rotation motion synchronously with the fifth rotating shaft 132 to receive the liner release paper peeled off from the fiber cloth strip.

As can be seen from fig. 4 and 5, the second rear circumferential rotation support 133 includes a second rear bearing seat 1331 and a fifth rear bearing 1332. Wherein the second rear bearing block 1331 is detachably fixed to the rear sidewall of the second bracket 11. The fifth rear bearing 1332 is embedded in the second rear bearing seat 1331, and is sleeved with the fifth rotating shaft 132. Thus, on the premise of ensuring the isolation paper rolling unit 13 to have a very simple design structure, the receiving cylinder 131 is effectively ensured to have good rotation sensitivity in practical application, and the receiving operation of the liner isolation paper is further ensured to be smoothly performed.

As shown in fig. 5, the power unit 134 for driving the fifth rotating shaft 132 mainly includes a support 1341, a rotating motor 1342, and a timing belt drive mechanism 1343. The supporting seat 1341 is used for supporting the rotating motor 1342, and is detachably fixed on the second bracket 11. The synchronous belt transmission mechanism 1343 is used for transmitting a torsional moment to the fifth rotating shaft 132, and includes a first synchronous wheel, a second synchronous wheel, and a synchronous belt capable of being sleeved with the first synchronous wheel and the second synchronous wheel. The first synchronizing wheel is directly driven by the rotating motor 1342, and the second synchronizing wheel is sleeved on and fixed to the fifth rotating shaft 132. As is known, the synchronous belt drive mechanism 1343 has no relative sliding phenomenon in practical applications, and the belt length remains unchanged all the time, so that the synchronous belt drive mechanism has good transmission ratio stability and high transmission efficiency, so as to ensure that the material receiving barrel 131 can rotate stably and reliably, thereby realizing timely receiving of the liner spacer paper.

As shown in fig. 4, 5, and 6, the separator winding unit 12 is further provided with a rotary thimble portion 135. The rotating thimble 135 is used to limit the freedom of axial displacement and circumferential runout of the material receiving cylinder 131, and is also borne by the second frame 11. The rotary thimble portion 135 is mainly composed of a cylinder 1351, a transition shaft 1352, a second front circumferential rotation support portion 1353, a front conical head 1354 and the like. The cylinder 1351 is used to drive the transition shaft 1352 to perform an axial displacement motion, and is detachably inserted on the front side of the second frame 11. With the assistance of the second forward circumferential rotation support 1353, the forward conical stub shaft 1354 is thus assembled to the transition shaft 1352 and is free to perform a circumferential rotational movement about its central axis. The second forward circumferential rotational support 1353 is preferably a fifth forward bearing 13531 assembled between the transition shaft 1352 and the forward conical stub shaft 1354. Under the driving force of the cylinder 1351, the front conical shaft head 1354 performs an axial displacement movement forwards/backwards to realize/release the top touch of the front end part 131 of the material receiving cylinder. As is apparent from fig. 4 and 5, the front end surface of the fifth rotary shaft 132 continues to extend forward to form a rear tapered ejector 1321. The rear tapered ejector section 1321 is located opposite the front tapered stub shaft 1354 and cooperates to bear the material receiving barrel 131. In practice, the forward conical stub shaft 1354 and the rearward conical ejector section 1321 cooperate to provide a load to the take-up drum 131. Therefore, on one hand, the assembly difficulty of the winding drum 131 is effectively reduced, and the replacement operation of the fully loaded winding drum 131 is conveniently and quickly executed after the liner isolation paper is wound; on the other hand, the winding drum 131 is always kept in a stable posture in the circumferential rotation process, which is specifically characterized by small radial runout and axial runout, and finally, the winding process of the liner release paper is smoothly and stably implemented.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (15)

1. A fiber cloth strip feeding system suitable for a weft laying machine comprises an unwinding device and a tensioning device; the unwinding device is arranged upstream of the tensioning device and cooperates with the tensioning device to continuously feed the strip of fibrous fabric towards the weft laying machine; the unwinding device is used for unwinding a fiber cloth strip roll and feeding the fiber cloth strip roll to the tensioning device, and is 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 at the downstream of the tensioning unit so as to directionally convey the fiber cloth strips transferred by 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 mounted on the first bracket and can freely perform self-rotation around the central axis of the rotating roller assembly; the gravity roller assembly is arranged at one side of the rotary roller assembly by the force transmission assembly, and can freely perform self-rotation movement around the central axis of the gravity roller assembly and can also freely perform revolution movement around the central axis of the rotary roller assembly.

2. A fiber cloth strip feeding system suitable for a weft laying machine according to claim 1, characterized in that the rotating roller assembly comprises a first rotating shaft assembly, a first supporting roller, a front circumferential rotating support part and a first rear circumferential rotating support part; the front circumferential rotation supporting part and the first rear circumferential rotation supporting part are assembled on the first bracket, are oppositely arranged and cooperate to realize the support of the first rotating shaft assembly; the first material supporting roller is used for winding the fiber cloth strips, and is sleeved and fixed on the first rotating shaft assembly.

3. A fiber cloth strip feeding system suitable for a weft laying machine according to claim 2, characterized in that the front circumferential rotation support comprises a first front bearing seat and a first front bearing; the first front bearing seat is detachably fixed on the front side wall of the first bracket; the first front bearing is embedded on the first front bearing seat and is sleeved with the first rotating shaft assembly; the first rear circumferential rotation supporting part comprises a first rear bearing seat and a first rear bearing; the first rear bearing seat is detachably fixed on the rear side wall of the first support; the first rear bearing is embedded on the first rear bearing seat and is sleeved with the first rotating shaft assembly.

4. A system for feeding a fibre cloth strip for a weft laying machine according to claim 3, characterised in that the force transfer assembly is formed by a front force transfer subassembly and a rear force transfer subassembly; the front force transmission subassembly is arranged in front of the first material supporting roller and comprises a front force transmission plate and a second front bearing; the rear force transmission subassembly is arranged behind the first material supporting roller and comprises a rear force transmission plate and a second rear bearing; the front force transmission plate is sleeved on the first rotating shaft assembly by virtue of the second front bearing and can freely perform circumferential rotating motion; the rear force transmission plate is sleeved on the first rotating shaft assembly through the second rear bearing and can also freely perform circumferential rotating motion; the front force transmission plate and the rear force transmission plate are respectively arranged at the front side and the rear side of the gravity roller assembly and cooperate to bear the gravity roller assembly.

5. A fibre cloth strip feeding system suitable for a weft laying machine according to claim 4, characterized in that the gravity roller assembly comprises a second rotating shaft assembly and a second material supporting roller; the front end part and the rear end part of the first rotating shaft component are respectively fixed with the front force transmission plate and the rear force transmission plate in a one-to-one correspondence and detachable manner; the second material supporting roller is also used for the passing of the limiting cloth strip, is sleeved on the second rotating shaft assembly and can freely perform circumferential rotating motion around the central axis of the second rotating shaft assembly.

6. A fiber cloth strip feeding system suitable for a weft laying machine according to claim 1, characterized in that the guide roller assembly comprises a third rotating shaft assembly, a third material supporting roller, a third front bearing and a third rear bearing; the third front bearings and the third rear bearings are respectively embedded on the front side wall and the rear side wall of the first bracket in a one-to-one correspondence manner, and cooperate with each other to support the third rotating shaft assembly; the third material supporting roller is used for winding the fiber cloth strips, and is sleeved and fixed on the third rotating shaft assembly.

7. The fiber cloth strip supply system suitable for the weft laying machine according to any one of claims 1 to 6, wherein the unwinding device comprises a second bracket, a discharging assembly and a barrier paper winding unit; the discharging assembly is supported by the second support and is used for flattening the fiber cloth strips under the action of pulling force; the isolating paper winding unit is also supported by the second support and is matched with the winding device for use so as to collect the liner isolating paper stripped from the fiber cloth strips.

8. The fiber cloth strip feeding system suitable for the weft laying machine according to claim 7, wherein the discharging assembly comprises a fourth rotating shaft assembly, a discharging tray, a fourth front bearing and a fourth rear bearing; the fourth front bearings and the fourth rear bearings are respectively embedded on the front side wall and the rear side wall of the second bracket in a one-to-one correspondence manner, and cooperate with each other to support the fourth rotating shaft assembly; the fiber cloth strips to be unreeled are wound on the unreeling disc and sleeved and fixed on the fourth rotating shaft assembly.

9. The fiber cloth strip feeding system suitable for the weft laying machine according to claim 7, wherein the release paper winding unit comprises a material collecting barrel, a fifth rotating shaft, a second rear circumferential rotating support part and a power part; the second rear circumferential rotation supporting part is assembled on the rear side wall of the second bracket to support the fifth rotation shaft; and the fifth rotating shaft presents a single-pivot cantilever posture; the fifth rotating shaft is used for bearing the material collecting barrel; the fifth rotating shaft is driven by the power part, and after the power part is started, the material receiving cylinder synchronously executes circumferential rotation motion along with the five rotating shafts so as to receive the liner release paper peeled from the fiber cloth strips.

10. A fibre cloth strip feeding system suitable for a weft laying machine according to claim 9, characterised in that the second rear circumferential support comprises a second rear bearing block, a fifth rear bearing; the second rear bearing block is detachably fixed on the rear side wall of the second bracket; the fifth rear bearing is embedded on the second rear bearing seat and is sleeved with the fifth rotating shaft.

11. A fiber cloth strip feeding system suitable for a weft laying machine according to claim 9, characterized in that the power part comprises a supporting seat, a rotating motor and a synchronous belt transmission mechanism; the supporting seat is used for bearing the rotating motor and is detachably fixed on the second bracket; the synchronous belt transmission mechanism is used for transmitting a torsional moment to the fifth rotating shaft and comprises a first synchronous wheel, a second synchronous wheel and a synchronous belt which can be sleeved with the first synchronous wheel and the second synchronous wheel simultaneously; the first synchronizing wheel is directly driven by the rotating motor, and the second synchronizing wheel is sleeved and fixed on the fifth rotating shaft.

12. The fiber cloth strip feeding system suitable for the weft laying machine according to claim 9, wherein the release paper winding unit further comprises a rotary thimble portion; the rotary thimble portion is used for limiting the axial displacement freedom degree and the circumferential deflection of the material receiving barrel, and is also borne by the second support.

13. A fiber cloth strip feeding system suitable for a weft laying machine according to claim 12, characterized in that the rotary thimble portion comprises a linear motion element, a transition shaft, a second forward circumferential rotation support and a forward conical nose; the linear motion element is used for driving the transition shaft to perform axial displacement motion and is detachably inserted on the front side of the second bracket; under the auxiliary action of the second preposed circumferential rotation supporting part, the preposed conical shaft head is assembled on the transition shaft and can freely perform circumferential rotation movement around the central axis of the transition shaft; under the driving force of the linear motion element, the front conical shaft head performs axial displacement movement forwards/backwards to realize/release the jacking contact on the front end part of the material collecting barrel.

14. A fibre cloth strip feed system for a weft laying machine according to claim 13, characterised in that the second forward circumferential support is a fifth forward bearing assembled between the transition shaft and the forward conical nose.

15. A fiber cloth strip feeding system suitable for a weft laying machine according to claim 13, characterized in that a rear conical ejection section is formed by extending forward from the front end face of the fifth rotating shaft; the rear conical ejection section is opposite to the front conical shaft head and is cooperated to bear the material collecting barrel.

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