CN114351329A - Film braiding machine - Google Patents

Abstract

The invention relates to a film knitting machine, which comprises a warp unreeling device, a guiding device, a shed device, an insertion device and a knitting reeling device, wherein the insertion device is arranged corresponding to a shed formed by the shed device; the warp unreeling shaft can keep constant tension of a warp film, and meanwhile, the warp unreeling shaft can also withdraw the film warp to close a shed; the weft insertion device can simultaneously complete weft insertion and beating-up actions, so that the production efficiency is improved; a plurality of weft yarns are unreeled and cut at one time to supply a plurality of fixed-length weft yarns.

Description

Film braiding machine

Technical Field

The invention belongs to the technical field of textile machines, and particularly relates to a film knitting machine.

Background

In CN101120128B and CN101120129B a new method and apparatus for weaving tape-like warps and wefts is described, which weaving process enables processing of different types of tape materials to make textile materials for a variety of technical applications, such as ballistic protection, conveyor belts, liquid drainage panels etc., but not only for composite applications. The warp and weft in the form of tape is used to make the engineering have never higher performance, but the warp in the weaving process is supplied with tension-free warp, the unreeling shaft is a common fixed support, and a plurality of tape rolls with different roll diameters are placed on the same fixed support, the design can adapt to different types of tape materials, and the tape, especially fiber tape, is prevented from being cut and deformed or easily gathered, but when the woven tape is a thin ultra-high molecular weight polyethylene film, the warp tape at the shuttle port cannot be completely flattened in a tension-free state, so that a weft insertion mechanism cannot normally enter the shuttle port, the quality of the fabric and the normal operation of the production are influenced, and the warp feeding device for supplying the tension-free warp with constant length in the design is complex in structure and is not beneficial to the stable and efficient operation of a weaving machine.

When the production method is used for spinning the ultra-high molecular weight polyethylene film, the method is not satisfactory in terms of labor amount, time consumption and failure rate and product quality, and is only used for fixed support of unreeling, so that the situation that long-time parking is caused due to too long material changing time is caused sometimes.

The textile machines using the slip shaft as the unwinding shaft in the prior art also have similar disadvantages, and in addition, when the slip shaft is used as the unwinding shaft, one slip shaft is used for unwinding a plurality of rolls of material, and only one roll diameter sensor can be installed, because the diameters of the rolls are difficult to be completely consistent in actual production, which causes inconsistent tension of the rolls on the same slip shaft.

In CN103429803B, a warp releasing device is described, which supplies warp for opening and taking-up and withdraws warp for closing shed through a movable contact surface of a rolling member, and has the advantages of measuring and controlling warp for opening shed and taking-up operation without clamping warp, overcoming the problems of warp tape sliding, fiber breakage, deformation caused by indentation, etc., but when the device is used for thinner ultra-high molecular weight polyethylene film warp, the warp tape is not consistent in tightness due to no tension or small tension, which may result in abnormal weft insertion, and at the same time, the flatness of the fabric is also affected.

In the prior art, the shedding is carried out by heald frames or rotors, which is carried out under high tension, which leads to abrasion of the warp yarns; the known weft yarn feeding devices can feed only a single weft yarn at a time.

The quality of products is seriously influenced by the above conditions, the production efficiency is reduced, the development of production and equipment modernization is restricted, and the demand for developing a new film warp yarn supply device which can improve the product quality and the labor efficiency and can reduce the labor intensity for production by technical personnel in the field is urgently needed.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provide a film knitting machine.

The technical scheme of the invention is as follows:

the utility model provides a film knitting machine, includes warp unwinding device, guider, shed device, insertion device, weaves the coiling mechanism, insertion device with the shed that the shed device formed corresponds the setting, insertion device includes latitudinal direction transport mechanism and sets up respectively main picker, left side picker, the right side picker of latitudinal direction transport mechanism below, latitudinal direction transport mechanism with be provided with elevating system between the main picker, latitudinal direction transport mechanism with correspond respectively between left side picker, the right side picker and be provided with displacement mechanism.

Furthermore, the displacement mechanism comprises a longitudinal translator and vertical lifters arranged on the lower portion of the longitudinal translator, the longitudinal translators are arranged on the latitudinal conveying mechanisms on the left side and the right side of the main picker respectively, and the vertical lifters are correspondingly arranged on the upper portions of the left side picker and the right side picker respectively.

Furthermore, a weft cutting and conveying device is arranged on the side edge of the shed, the weft cutting and conveying device comprises a conveying belt and a weft unwinding roller, the conveying belt is parallel to warp yarns, the weft unwinding roller is arranged on one side of the input end of the conveying belt, the weft unwinding direction of the weft unwinding roller is orthogonal to the direction of the conveying belt, a weft cutting machine corresponding to the weft unwinding roller is arranged on the side edge of the conveying belt, and the output end of the conveying belt is correspondingly arranged below the weft inserting device.

Furthermore, the warp unreeling device comprises at least two bases and warp unreeling shaft supports respectively arranged on the bases at intervals, warp unreeling shafts are arranged on the warp unreeling shaft supports, a torque motor is arranged at one end of each warp unreeling shaft, and the warp unreeling shafts between the bases are correspondingly arranged in a staggered mode.

Furthermore, the shed device comprises two warp yarn dispersing mechanisms arranged side by side, each warp yarn dispersing mechanism comprises a supporting beam and a telescopic mechanism arranged on the lower portion of the supporting beam, supporting rods are arranged on the upper portion of the supporting beam at intervals, guide rollers are arranged on the top ends of the supporting rods, and the supporting rods on the two warp yarn dispersing mechanisms are correspondingly arranged in a staggered mode.

Preferably, latitudinal direction transport mechanism includes the guide rail, the guide rail comprises guide rail groove and the slide rail that the embedding set up in the guide rail inslot, main pickup passes through elevating system sets up the lower part of slide rail sets up respectively main pickup both sides the left side pickup the right side pickup passes through respectively displacement mechanism sets up the lower part of slide rail, the guide rail groove sets up on latitudinal direction conveying support.

Preferably, the main pickup, the left side pickup and the right side pickup are all suckers.

The invention has the positive effects that:

1. the unwinding technology of multi-axis unwinding is provided, and one warp unwinding shaft is used for placing a roll of material, so that the material can be conveniently fed; the warp unreeling shaft can keep constant tension of a warp film, namely the unreeling application of the torque motor: in the conveying process, the torque motor applies tension to the warp yarn opposite to the transmission direction, and simultaneously, as the winding diameter is reduced, the torque is reduced, so that the tension of the warp yarn is kept constant; meanwhile, the warp unreeling shaft can also withdraw the film warp to close the shed, namely the reeling effect of the torque motor; the motor is partially in a locked-rotor state after shed formation and during the next shed formation;

2. the top end of the warp yarn dispersing mechanism is provided with the guide roller, so that the abrasion to warp yarns is avoided, and the adaptability to the material of the warp yarns is wider;

3. the weft insertion device can simultaneously complete weft insertion and beating-up actions, so that the production efficiency is improved;

4. a plurality of weft yarns are unreeled and cut at one time to supply a plurality of fixed-length weft yarns.

Drawings

Fig. 1 is a schematic view of the whole working structure of the braiding machine in the invention.

Fig. 2 is a schematic structural diagram of the unwinding device in the present invention.

FIG. 3 is a schematic view of the warp yarn dispersing mechanism of the present invention.

FIG. 4 is a schematic diagram of the weft picking structure after the weft is cut in the invention.

Fig. 5 is one of the schematic structural views of an insertion device according to the invention.

Fig. 6 shows a second embodiment of the insertion device according to the invention.

Fig. 7 is a schematic top view of the weft cutting and weft picking and inserting structure of the weaving machine of the present invention.

FIG. 8 is a schematic structural diagram of a composite device according to the present invention.

In the figure: the device comprises a warp unwinding device (10), a base (11), a warp unwinding shaft support (12), a warp unwinding shaft (13) and a torque motor (14);

a guide device (20), a guide roller (21), a floating roller (22), a warp guide roller (23) and a back press roller (24);

a shed device (30), a supporting beam (31), a telescopic mechanism (32), a supporting rod (33) and a guide roller (34);

the weft insertion device comprises a weft insertion device (40), a weft conveying mechanism (41), a main picker (42), a left picker (43), a right picker (44), a lifting mechanism (45), a displacement mechanism (46), a longitudinal translator (47), a vertical lifter (48), a guide rail groove (411), a slide rail (412) and a weft conveying support (413);

the weft cutting device comprises a weft cutting and conveying device (50), a conveying belt (51), a weft unreeling roller (52), a weft cutting beam (53), a cutting knife (54), a suction cup (55) and a cutting unreeling suction cup track (56); a braiding and winding device (60);

a press roller (70), a pattern roller (71), a bulge (72) and a heating plate (73).

Detailed Description

Exemplary embodiments of the present invention will hereinafter be described in detail with reference to the accompanying drawings, and the embodiments described below by reference to the drawings are exemplary and intended to explain the present invention and are not to be construed as limiting the present invention.

In addition, it should be noted that in order to avoid obscuring the present invention with unnecessary detail, only the device structure closely related to the present invention is depicted in the drawings and the description, and the representation and description of the parts and processes which are not relevant to the present invention and known to those of ordinary skill in the art are omitted.

The first embodiment is as follows: as shown in fig. 1 and 2, the film knitting machine comprises a warp unwinding device 10, a guide device 20, a shedding device 30, an insertion device 40 and a knitting winding device 60, wherein the insertion device 40 is arranged corresponding to a shed formed by the shedding device 30.

The warp unwinding device 10 comprises four bases 11 and warp unwinding shaft brackets 12 respectively arranged on each base 11 at intervals, warp unwinding shafts 13 and torque motors 14 are arranged on the square winding shaft brackets 12, the warp unwinding shafts 13 are connected with driving shafts of the torque motors 14, and the warp unwinding shafts 13 on the four bases 11 are correspondingly arranged in a staggered mode.

The warp unwinding shaft 13 of the warp unwinding device 10 is mainly used for loading a warp film and individually unwinding to supply warps respectively to facilitate downstream shed formation and fabric take-up, and the warp unwinding device 10 can also retract the warps to facilitate shed closing, wherein the warps are supplied in the form of a film rather than a yarn. Unreel alone and reduced the operation degree of difficulty, improved production efficiency. Meanwhile, the direct-current torque motor is adopted, constant tension is provided for the film warps, the plain weave fabric manufactured based on the warp feeding device is high in flatness and compact in structure, and the quality of products is guaranteed.

The warp unreeling shafts 13 are used as warp supply sources to place warp film rolls, the warp unreeling shafts 13 are air expansion shafts, preferably cantilever type air expansion shafts, each warp unreeling shaft 13 can independently place a roll of warp film, air inflation and air deflation of the cantilever type air expansion shafts are controlled by an electromagnetic control valve, roll loading or roll changing time is saved, and rapid loading or material changing is achieved.

The warp unreeling shaft bracket 12 is also provided with a reeling diameter measuring device, the reeling diameter measuring device preferably adopts an ultrasonic sensor, the ultrasonic sensor is arranged on the base 11 right below each warp unreeling shaft 13 and is mainly used for measuring the reeling diameter of a warp film roll in real time and feeding back signals to a controller of the film braiding machine, and the controller realizes the change of a driving shaft of a torque motor and the warp unreeling shaft 13 by adjusting the voltage of the torque motor with the reeling characteristic so as to keep the tension of the warp film constant.

The torque motor 14 is in control connection with the ultrasonic sensor through the controller, in the warp film conveying process, the torque motor 14 applies tension opposite to the unwinding direction of the warp film through the controller, and along with the reduction of the warp film winding diameter, the ultrasonic sensor feeds back to the controller, so that the output torque of the torque motor 14 of the warp unwinding shaft 13 can be reduced, and the tension in the warp film running process is kept constant.

Here, the position of the warp unwinding shaft bracket 12 on the base 11 can be adjusted correspondingly according to the warp film rolls with different widths to adapt to the placement, and the warp dispersing mechanisms 3a and 3b with corresponding widths are replaced correspondingly, so as to obtain fabrics with different widths.

The number of warp let-off spool supports 12 is not limited to that shown in figure 2 and the number of warp let-off spool supports 12 can be increased or decreased to weave fabrics of different widths or to weave fabrics of the same width using film warps of different widths.

The auxiliary deviation correcting device is a commonly-used known technology, and comprises technical contents disclosed before opening, such as the analysis and application of a deviation correcting mechanism of a flexible film winding and conveying system, or corresponding technical contents disclosed by Zhao Mei Ning, and the like, such as the document name of an automatic deviation correcting device and a control system of a film of a sterile bag machine.

The guiding device 20 is mainly used for guiding warp yarn films and comprises a guiding roller 21 and a floating roller 22, wherein the guiding device 20 is arranged at the downstream of each warp yarn unreeling shaft 13, as shown in figure 1; a dancer roller 22, arranged between the two guide rollers 21, for absorbing or buffering the influence of a tension jump of the warp film on the stability of the corresponding warp film.

The guide roller 21 is also provided with a limiting ring for limiting the position deviation of each warp film on the guide roller and facilitating the positioning of warps during material changing; the limiting rings are specifically arranged on the guide roller 21 close to the warp unreeling shaft 13, and the distance between two adjacent limiting rings can be adjusted to adapt to film warps with different widths.

The guide rollers 21 are chrome-plated steel rollers and can rotate freely, so that the resistance of the film in the operation process is reduced. The surface is treated with chrome plating to increase the surface finish, corrosion resistance and wear resistance in order to reduce the resistance and damage of the guide roll 4 to the film warp.

The floating roller 22 is made of steel, the surface of the floating roller is subjected to chrome plating treatment, and the floating roller 22 is mainly used for storing a located warp film and absorbing or buffering the influence of tension jump on warp stability.

In order to avoid the influence of the fact that the same warp unwinding shaft unwinds a plurality of warps simultaneously (such as the tension of each warp is not easy to adjust and control and is not coordinated), and to make the textile machine compact, simple and easy to operate and relatively low in cost, the warp unwinding device 10 is designed according to the following principle: (i) using a direct current torque motor to independently control each film warp, namely the number of the warp unreeling shafts 13 is consistent with the number of the warp; (ii) the warp unreeling shaft 13 is staggered up and down and back and forth, and the film warps from the warp unreeling shaft 13 are divided into two groups by the guide rollers 21 as shown in fig. 1, so that the two groups of warps eject the warps upwards alternately to form the shed under the action of the warp dispersing mechanisms 3a and 3b of the shedding device 30.

As shown in fig. 1 and 3, the shedding device 30 includes two warp yarn dispersing mechanisms 3a and 3b arranged side by side, each warp yarn dispersing mechanism includes a supporting beam 31 and a telescoping mechanism 32 respectively arranged at the lower part of the supporting beam 31, supporting rods 33 are arranged at intervals at the upper part of the supporting beam 31, guide rollers 34 are arranged at the top ends of the supporting rods 33, and the supporting rods 33 on the two warp yarn dispersing mechanisms are correspondingly staggered. In the present embodiment, the stretching mechanism 32 is an air cylinder, wherein a warp guide roller 23 and a back pressure roller 24 are respectively disposed upstream and downstream of the shedding device 30 in the warp unwinding direction. In the prior art, shedding needs to be performed under high tension through a heald frame form or a rotor form, the heald frame or the rotor can cause abrasion of warp strips to affect the appearance and the performance of the fabric, shedding can be performed under the condition of low tension or even no tension by using warp dispersing mechanisms 3a and 3b, and the guide roller 34 rotates along with the advance or retraction of the warp strips, so that static friction is not generated, abrasion of the warp strips is not generated, the appearance of the fabric is good, and the performance is stable.

On the next insertion device, the problem of the weft thread dropping due to gravity when the weft thread strip is inserted horizontally into the shed is improved because in the prior art, the weft thread drops due to gravity when the weft thread strip is inserted vertically into the shed, but the effect is still not ideal. For example, CN 10112012B, which adopts a new gripper head suitable for positively driven rapier system and negatively driven gripper system, which directly accommodates the whole width of the front part of the weft tape in its mouth and holds the weft tape flat, and which can insert tape-like wefts of different widths, thicknesses, materials and structures in the same fabric in a flat and non-deformed state, but when the warp tapes are thin (less than 30 μm) or wide (more than 100mm), for example, ultra-high molecular weight polyethylene tapes with width of 120mm and thickness of 20 μm are inserted into the shed as weft, the weft length direction will be curled or wrinkled to affect the fabric quality, and the problem of sagging due to gravity still exists, and gravity sagging will directly cause the length of the inserted weft to be lengthened, thereby affecting beating-up.

According to another method disclosed in the comparison document USP5455107, a reed is used to beat up the tape-like weft, which results in a transverse deformation of the weft and warp yarns, eventually resulting in the formation of gaps or openings in the fabric; according to a further comparative example, USP6450208, a set of rollers is used, which, by their rotary motion, align the weft at the fell, the rollers, when they rotate, tend only to contact and align the preceding belts, since they slide transversely over the latter, i.e. there is no guarantee that the weft can be correctly placed at the fell each time; in addition, CN101120128 describes a vertical weft tape arranging device, which clamps weft tape and sends the weft tape to the cloth fell after the weft gripper sends the weft into the shed, and although the device can send the weft tape to the cloth fell smoothly, the device reduces the weaving efficiency because it is separated from the weft insertion device.

Therefore, in the insertion device 40 provided in the present invention, as shown in fig. 4, 5, and 6, the insertion device 40 includes a weft transport mechanism 41, and a main pickup 42, a left side pickup 43, and a right side pickup 44 that are respectively provided below the weft transport mechanism 41, a lift mechanism 45 is provided between the weft transport mechanism 41 and the main pickup 42, and displacement mechanisms 46 are respectively provided between the weft transport mechanism 41 and the left side pickup 43, and the right side pickup 44 in correspondence. In the present embodiment, the main pick-up 42, the left pick-up 43 and the right pick-up 44 are all suction plates or suction cups for smoothly sucking the fixed-length weft tapes at the same time, so that the problem of gravity sag is solved, and meanwhile, curling and wrinkling are also avoided.

After the main picker 42, the left picker 43 and the right picker 44 pick up the fixed-length weft yarn, the weft-length weft yarn is inserted into the shed by the weft transfer mechanism 41, the main picker 42 releases the weft yarn after reaching a specified position, and the left picker 43 and the right picker 44 keep suction so that the weft yarn is kept in a tension state.

The weft conveying mechanism 41 comprises a guide rail, the guide rail is composed of a guide rail groove 411 and a slide rail 412 embedded in the guide rail groove, the main picker 42 is arranged at the lower part of the slide rail 412 through a lifting mechanism 45, the left side picker 43 and the right side picker 44 which are respectively arranged at two sides of the main picker 42 are respectively arranged at the lower part of the slide rail 412 through a displacement mechanism 46, the guide rail groove 411 is arranged on a weft conveying support 413, the weft conveying mechanism 41 is mainly used for supporting and moving the displacement mechanism 46 on the whole, so that the displacement mechanism 46 can penetrate and contract to move along the weft direction, and after a shed is formed, the slide rail 412 is inserted into the shed along the weft direction to convey fixed-length weft yarns to a specified position to complete weft insertion.

The displacement mechanism 46 includes a longitudinal translator 47 and vertical lifters 48 provided at a lower portion of the longitudinal translator 47, the longitudinal translators 47 are respectively provided on the latitudinal transport mechanisms 41 on the left and right sides of the main picker 42, and the vertical lifters 48 are respectively provided at upper portions of the left side picker 43 and the right side picker 44. In this embodiment, the lifting mechanism 45, the longitudinal translator 47, and the vertical lifter 48 are all cylinders, and after the longitudinal translator 47 moves in the winding direction to deliver the weft yarns to the fell, the left side picker 43 and the right side picker 44 release the weft yarns to complete beating-up, and the inserting action and the beating-up action are consecutive without a time interval in the middle, thereby improving the weaving efficiency. The left side picker 43, the main picker 42 and the right side picker 44 fall onto the fixed-length weft yarns through the downward falling of the lifting mechanism 45 and the vertical lifter 48 in the displacement mechanism 46, the fixed-length weft yarns are completely and flatly adsorbed and lifted for picking, after the sliding rail 412 is inserted into a shed along the weft direction and finishes the adsorption of the main picker 42, the longitudinal translator 47 moves forwards, and meanwhile, the vertical lifter 48 moves downwards, so that the fixed-length weft yarns are driven to finish the beating-up action.

As shown in fig. 7, a weft cutting and conveying device 50 is disposed at a side edge of the shed, the weft cutting and conveying device includes a conveying belt 51 disposed parallel to the warp and a weft unwinding roller 52 disposed at an input end side of the conveying belt 51, a weft unwinding direction of the weft unwinding roller is orthogonal to a conveying direction, a weft cutting machine corresponding to the weft unwinding roller 52 is disposed at an upper side of the conveying belt 51, and an output end of the conveying belt 51 is correspondingly disposed at a lower side of the weft insertion device 40. The weft cutting and conveying device 50 is mainly used for cutting the package weft at a fixed length and conveying the package weft to corresponding positions, so that the left picker 43, the main picker 42 and the right picker 44 can pick up the package weft in an absorption manner.

The weft cutting machine comprises a cutting beam 53 and a cutting track 56, wherein a cutting knife 54 is arranged on one side of the cutting beam 53, and a weft unwinding stretching suction cup 55 is arranged on the cutting track 56.

The woven film can be bonded together by a combining device before being rolled, wherein the combining comprises fixing the warp yarns and the weft yarns of the fabric into a whole by hot melting, ultrasonic waves or other modes. The composite device comprises a press roll 70 and a pattern roll 71, wherein heating plates 73 are arranged in the pattern roll at intervals, bulges 72 are arranged on the arc-shaped surfaces of the heating plates 73, and the composite device is correspondingly arranged between the back press roll 24 and the weaving and winding device 60. As shown in fig. 8.

The weaving and winding device 60 mainly winds up the woven film through a winding roller.

During the knitting operation of the film knitting machine, the controller:

(1) firstly, film warps are provided by a warp unwinding device 10;

(2) the warp film is ejected upwards by a warp yarn dispersing mechanism 3a to form a shed;

(3) the weft insertion device 40 conveys the cut fixed-length film weft yarns to the lower parts of the corresponding left picker 43, main picker 42 and right picker 44 through the conveying belt 51, descends through the corresponding lifting mechanism 45 and vertical lifter 48, picks up the fixed-length film weft yarns, completely inserts the fixed-length film weft yarns into the shed in a weft-wise manner through the sliding rail 412, releases the fixed-length film weft yarns picked up by the middle main picker 42 through the controller, namely the fixed-length film weft yarns are only adsorbed and fixed by the left picker 43 and the right picker 44 at the left end and the right end, and then drives the fixed-length film weft yarns to move along the unwinding direction of warp yarns through the longitudinal translator 47, so that the fixed-length film weft yarns are conveyed to the rear edges of the fixed-length film weft yarns to finish the beating-up action;

(4) crimping the woven fabric, wherein the length of each crimp is the width of the weft yarn;

(5) the warp yarn dispersing mechanism 3a moves downwards, and meanwhile, the located warp yarns are drawn back by the corresponding warp yarn unreeling shaft 13 to be ejected, so that the shed is closed, and meanwhile, the corresponding warp yarns are ejected upwards by the warp yarn dispersing mechanism 3b to form the shed again;

(6) repeating the steps (3) and (4);

(7) the next loop steps (1) to (6) are performed to continuously manufacture plain woven fabric. Before the step (4), namely before the fabric is wound by the weaving winding device (60), the woven fabric is subjected to edge sealing treatment: the warp yarns on two sides of the fabric and the corresponding weft yarns are fixed to form selvedges through heat melting, ultrasonic waves or other methods so as to prevent the warp yarns and the weft yarns from relative displacement to cause the fabric to be loose.

In this embodiment, the warp and weft are both ultra-high molecular weight polyethylene films, and the corresponding parameters of the ultra-high molecular weight polyethylene films at least satisfy one or more of the following:

the width is more than 50 mm;

the thickness is less than 0.1 mm;

breaking strength of more than 10 g/denier;

tensile modulus is more than 1000 g/denier;

elongation at break is 5% or less.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the concepts of the present invention are all within the scope of protection defined by the claims.

Claims (7)

1. A film knitting machine comprises a warp unwinding device (10), a guiding device (20), a shedding device (30), an insertion device (40) and a knitting winding device (60), wherein the insertion device (40) is arranged corresponding to a shed formed by the shedding device (30), and the film knitting machine is characterized in that: insert weft installation (40) including latitudinal direction transport mechanism (41) and set up respectively main pickup (42), left side pickup (43), right side pickup (44) of latitudinal direction transport mechanism (41) below, latitudinal direction transport mechanism (41) with be provided with elevating system (45) between main pickup (42), latitudinal direction transport mechanism (41) with it is provided with displacement mechanism (46) to correspond respectively between left side pickup (43), the right side pickup (44).

2. The film knitting machine as claimed in claim 1, characterized by: the displacement mechanism (46) comprises a longitudinal translator (47) and vertical lifters (48) arranged on the lower portion of the longitudinal translator (47), the longitudinal translators (47) are respectively arranged on the weft conveying mechanisms (41) on the left side and the right side of the main picker (42), and the vertical lifters (48) are respectively and correspondingly arranged on the upper portions of the left picker (43) and the right picker (44).

3. The film knitting machine as claimed in claim 1, characterized by: the weft cutting device comprises a conveying belt (51) arranged in parallel with warps and a weft unwinding roller (52) arranged on one side of the input end of the conveying belt (51), the weft unwinding direction of the weft unwinding roller is orthogonal to the conveying belt direction, a weft cutting machine corresponding to the weft unwinding roller (52) is arranged on the side of the conveying belt (51), and the output end of the conveying belt (51) is correspondingly arranged below the weft inserting device (40).

4. The film knitting machine as claimed in claim 1, characterized by: the warp unreeling device (10) comprises at least two bases (11) and warp unreeling shaft supports (12) arranged on the bases (11) at intervals respectively, warp unreeling shafts (13) are arranged on the warp unreeling shaft supports (12), torque motors (14) are arranged at one end portions of the warp unreeling shafts (13), and the warp unreeling shafts (13) between the bases (11) are correspondingly arranged in a staggered mode.

5. The film knitting machine as claimed in claim 1, characterized by: the shed device (30) comprises two warp yarn dispersing mechanisms arranged side by side, each warp yarn dispersing mechanism comprises a supporting beam (31) and a telescopic mechanism (32) arranged on the lower portion of the supporting beam (31), supporting rods (33) are arranged on the upper portion of the supporting beam (31) at intervals, guide rollers (34) are arranged on the top ends of the supporting rods (33), and the supporting rods (33) on the two warp yarn dispersing mechanisms are correspondingly arranged in a staggered mode.

6. The film knitting machine as claimed in claim 1, characterized by: latitudinal direction transport mechanism (41) includes the guide rail, the guide rail comprises guide rail groove (411) and slide rail (412) that the embedding set up at the guide rail inslot, main pickup (42) pass through elevating system (45) set up the lower part of slide rail (412) sets up respectively main pickup (42) both sides left side pickup (43) right side pickup (44) pass through respectively displacement mechanism (46) set up the lower part of slide rail (412), guide rail groove (411) sets up on latitudinal direction conveying support (413).

7. The film knitting machine as claimed in claim 1, characterized by: the main pickup device (42), the left pickup device (43) and the right pickup device (44) are suction cups.

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