CN112501902A

CN112501902A - Automatic textile fabric cutting machine for extending fabric at cutting position

Info

Publication number: CN112501902A
Application number: CN202011552932.9A
Authority: CN
Inventors: 刘新
Original assignee: Nanjing Bofisi Garment Co ltd
Current assignee: Nanjing Bofisi Garment Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-03-16

Abstract

The invention discloses an automatic textile fabric cutting machine capable of extending cloth at a cutting position, which comprises a fabric cutting machine body, wherein a cutting machine translation cavity with a forward opening is arranged at the lower side in the fabric cutting machine body, a swing rotating shaft cavity which is positioned at the upper side of the cutting machine translation cavity and is bilaterally symmetrical is arranged in the fabric cutting machine body, and the right wall of the swing rotating shaft cavity at the left side and the left wall of the swing rotating shaft cavity at the right side are respectively and rotatably connected with bilaterally symmetrical swing rotating shafts.

Description

Automatic textile fabric cutting machine for extending fabric at cutting position

Technical Field

The invention relates to the technical field of textile fabric cutting machines, in particular to an automatic textile fabric cutting machine capable of extending fabric at a cutting position.

Background

Along with the development of society, the textile industry is becoming more mature to the process of tailorring of cloth, and when the textile mill was tailor the cloth, mostly the raw materials that is used for fixed width carries out the fixed length after tiling and tailors, and the suitability is very poor, in case the tiling cloth is longer because the department of tailorring can not obtain the abundant stretching, will influence and tailor the effect. Most of the existing textile mills cut the cloth with fixed length and width, once the cloth is longer, the cloth is difficult to be fully stretched due to the physical characteristics of the cloth, and the cutting effect is influenced.

Disclosure of Invention

In order to solve the problems, the embodiment designs an automatic textile fabric cutting machine for extending the fabric at the cutting part, which comprises a fabric cutting machine body, wherein a cutting machine translation cavity with a forward opening is arranged at the lower side in the fabric cutting machine body, a swing rotating shaft cavity which is positioned at the upper side of the cutting machine translation cavity and is bilaterally symmetrical is arranged in the fabric cutting machine body, a swing rotating shaft which is bilaterally symmetrical is respectively and rotatably connected with the right wall of the swing rotating shaft cavity at the left side and the left wall of the swing rotating shaft cavity at the right side, the left end surface and the right end surface of the swing rotating shaft at the left side and the right side respectively extend to the left side and the right side of the fabric cutting machine body and are respectively and fixedly connected with swing connecting rods which are bilaterally symmetrical, swing rods which are bilaterally symmetrical are respectively and fixedly connected with the right end surface and the left end surface, the swing rod is in threaded connection with the rotating sleeve, a rotating sleeve cavity is respectively arranged in the left rotating sleeve and the right rotating sleeve, the right wall and the right side of the rotating sleeve cavity are respectively and fixedly connected with vertically symmetrical guide sliding sleeve cylinders, a guide sliding sleeve cavity which is penetrated left and right is respectively arranged in the guide sliding sleeve, an extension motor is fixedly arranged in the swing rod on the right side, the left side of the extension motor is in power connection with an extension rotating shaft, the left end surface of the extension rotating shaft extends to the position between the left swing rod and the right swing rod, the axis of the left swing rod and the axis of the right swing rod are fixedly connected with a rotating disc, the upper side and the lower side of the left end surface and the right end surface of the rotating disc are respectively and fixedly connected with symmetrical power rods, the power rods respectively penetrate through the guide sliding sleeve cavity and extend into the rotating sleeve cavity, a, the cloth cutting machine is characterized in that a cutting machine capable of sliding left and right is arranged in the cutting machine translation cavity, a cutting motor is fixedly arranged in the cutting machine, the front end of the cutting motor is in power connection with a cutting rotating shaft, a cutting knife is fixedly connected with the axis of the front end face of the cutting rotating shaft, the cutting knife can cut cloth, a translation device is arranged on the rear side of the cutting machine and can assist the cutting knife in cutting the cloth, a swinging device is arranged in the swinging rotating shaft cavity and can control the swinging connecting rod to swing up and down, and then the swinging rod swings up and down.

Preferably, the translation device is located including the intercommunication the translation slider connecting rod spout of cutting machine translation chamber rear side, translation slider connecting rod spout rear side intercommunication is equipped with the lead screw chamber, lead screw chamber left side wall internal fixation is equipped with translation motor, translation motor right-hand member face power is connected with the lead screw, be equipped with the translation slider that can the horizontal slip in the lead screw intracavity, terminal surface fixedly connected with translation slider connecting rod before the translation slider, terminal surface fixedly connected in before the translation slider connecting rod the cutting machine rear end face, translation slider left end face with fixedly connected with encircle between the lead screw chamber left side wall in the reset spring of lead screw, the front side is equipped with the screw thread slider chamber in the translation slider, be equipped with gliding screw thread slider around can in the screw thread slider intracavity, screw thread slider rear end face fixedly connected with connects the rope, screw thread slider rear end face with fixedly connected with between the screw thread slider chamber rear wall in the screw thread slider bullet of connecting the rope bullet in the screw thread slider of rope A spring.

Preferably, the threaded sliding block cavity is inclined towards the left front of the right rear box, and the friction force between the left wall and the right wall of the threaded sliding block cavity and the left end face and the right end face of the threaded sliding block are balanced with the friction force of the threaded sliding block spring.

Preferably, a contact switch cavity is arranged in the translation sliding block and located on the rear side of the threaded sliding block cavity, a contact sliding plate capable of sliding left and right is arranged in the contact switch cavity, a contact sliding plate spring is fixedly connected between the left end face of the contact sliding plate and the left wall of the contact switch cavity, a first contact switch is fixedly connected to the right end face of the contact sliding plate, and a second contact switch right opposite to the first contact switch is fixedly arranged on the right wall of the contact switch cavity.

Preferably, the rear side of the screw rod cavity is provided with a driven slide block cavity, a driven slide block capable of sliding left and right is arranged in the driven slide block cavity, the connecting rope is fixedly connected to the left end face of the driven slide block, the left end face of the driven slide block and the left wall of the driven slide block cavity are fixedly connected with one another and encircle the driven slide block spring of the connecting rope, and the spring elasticity of the driven slide block is far smaller than that of the threaded slide block spring.

Preferably, the swinging device comprises lifting rope chutes respectively communicated with the upper sides of the left and right swinging rotating shaft cavities, the upper sides of the left and right lifting rope chutes are respectively communicated with lifting sliding plate cavities provided with bilateral symmetry, swinging cranks are fixedly sleeved on the outer circular surfaces of the left and right swinging rotating shafts in the swinging rotating shaft cavities, the left and right two end surfaces of the swinging cranks and the left and right two walls of the swinging rotating shaft cavities are fixedly connected with swinging crank springs surrounding the swinging rotating shafts, the upper sides of the left and right swinging cranks are hinged with hinged blocks, the upper end surfaces of the left and right hinged blocks are fixedly connected with lifting ropes with bilateral symmetry, lifting sliding plates capable of sliding up and down are respectively arranged in the left and right lifting sliding plate cavities, the left and right lifting ropes respectively penetrate through the left and right lifting rope chutes and are fixedly connected with the lower end surfaces of the left and right lifting sliding plates, and lifting electromagnets which are bilaterally symmetrical are respectively and fixedly arranged in the upper walls of the left and right lifting slide plate cavities.

Preferably, a cloth rolling cylinder cavity with a backward opening is formed in the rear side in the cloth cutting machine body, a cloth rolling cylinder rotating shaft is connected between the left wall and the right wall of the cloth rolling cylinder cavity in a rotating mode, cloth is fixedly sleeved on the outer circular surface of the cloth rolling cylinder rotating shaft, and a cloth guide cavity is formed in the cloth rolling cylinder cavity and communicated with the cloth outlet.

The invention has the beneficial effects that: the device can assist a user in laying and cutting cloth by changing the position of the oscillating rod, firstly the oscillating rod is oscillated to the lower limit position to further stretch the cloth cutting position and cut the cloth, so that the phenomenon that the cloth is wrinkled due to insufficient stretching in the cutting process and the cutting quality is influenced is prevented, and meanwhile, the device can automatically change the position of the oscillating rod and prevent the cloth laying of the user from being influenced.

Drawings

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

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

FIG. 3 is a schematic diagram of B-B in FIG. 1.

Fig. 4 is an enlarged schematic view of C in fig. 3.

Fig. 5 is an enlarged schematic view of D in fig. 3.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an automatic textile fabric cutting machine for extending fabric at a cutting position, which comprises a fabric cutting machine body 11, wherein a cutting machine translation cavity 31 with a forward opening is arranged at the inner lower side of the fabric cutting machine body 11, a swinging rotating shaft cavity 37 which is positioned at the upper side of the cutting machine translation cavity 31 and is bilaterally symmetrical is arranged in the fabric cutting machine body 11, the right wall of the swinging rotating shaft cavity 37 at the left side and the left wall of the swinging rotating shaft cavity 37 at the right side are respectively and rotatably connected with bilaterally symmetrical swinging rotating shafts 38, the left end surface and the right end surface of the left swinging rotating shaft 38 and the right swinging rotating shaft 38 respectively extend to the left side and the right side of the fabric cutting machine body 11 and are respectively and fixedly connected with bilaterally symmetrical swinging connecting rods 39, the right end surface and the left end surface of the swinging connecting rod 39 at the left side are respectively and, the swing rod 40 and the rotating sleeve 45 are in threaded connection, a rotating sleeve cavity 44 is arranged in each of the left rotating sleeve 45 and the right rotating sleeve cavity 44, the right wall and the right side of the rotating sleeve cavity 44 are respectively and fixedly connected with a vertically symmetrical guide sliding sleeve 46, a guide sliding sleeve cavity 47 which penetrates left and right is arranged in each guide sliding sleeve 46, an extension motor 41 is fixedly arranged in each swing rod 40 on the right side, the left side of the extension motor 41 is in power connection with an extension rotating shaft 42, the left end surface of the extension rotating shaft 42 extends to the left and right two swing rods 40, a rotating disc 43 is fixedly connected with the axle center of each swing rod 40, symmetrical power rods 48 are respectively and fixedly connected with the upper side and the lower side of the left and right end surfaces of the rotating disc 43, the power rods 48 on the left side and right side respectively penetrate through the guide sliding sleeve cavity 47 and extend into the rotating sleeve cavity 44, a cloth outlet 54 which is positioned on the lower side of the translation cavity 31 of the cutting machine and, the cloth cutting machine is characterized in that a cutting machine 33 capable of sliding left and right is arranged in the cutting machine translation cavity 31, a cutting motor 34 is fixedly arranged in the cutting machine 33, the front end of the cutting motor 34 is in power connection with a cutting rotating shaft 35, the axis of the front end face of the cutting rotating shaft 35 is fixedly connected with a cutting knife 36, the cutting knife 36 can cut cloth, a translation device 101 is arranged on the rear side of the cutting machine 33, the translation device 101 can assist the cutting knife 36 to cut the cloth, swing devices 102 are arranged in the left swing rotating shaft cavity 37 and the right swing rotating shaft cavity 37, the swing devices 102 can control the swing connecting rods 39 to swing up and down, and then the left swing rod 40 and.

Beneficially, the translation device 101 includes a translation slider link chute 30 disposed at the rear side of the translation cavity 31 of the cutting machine, a screw rod cavity 12 is disposed at the rear side of the translation slider link chute 30, a translation motor 13 is fixedly disposed in the left wall of the screw rod cavity 12, a screw rod 14 is dynamically connected to the right end face of the translation motor 13, a translation slider 15 capable of sliding left and right is disposed in the screw rod cavity 12, a translation slider link 32 is fixedly connected to the front end face of the translation slider 15, the front end face of the translation slider link 32 is fixedly connected to the rear end face of the cutting machine 33, a return spring 23 surrounding the screw rod 14 is fixedly connected between the left end face of the translation slider 15 and the left wall of the screw rod cavity 12, a threaded slider cavity 16 is disposed at the inner front side of the translation slider 15, a threaded slider 17 capable of sliding front and rear is disposed in the threaded slider cavity 16, and a connecting rope 18 is fixedly connected to the, a threaded slider spring 19 surrounding the connecting rope 18 is fixedly connected between the rear end face of the threaded slider 17 and the rear wall of the threaded slider cavity 16.

Advantageously, the threaded slider cavity 16 is arranged to incline left and right of the rear box, and the friction force between the left and right walls of the threaded slider cavity 16 and the left and right end faces of the threaded slider 17 is balanced with the friction force of the threaded slider spring 19.

Advantageously, a contact switch cavity 25 is arranged in the translational slide block 15 and located at the rear side of the threaded slide block cavity 16, a contact sliding plate 26 capable of sliding left and right is arranged in the contact switch cavity 25, a contact sliding plate spring 27 is fixedly connected between the left end surface of the contact sliding plate 26 and the left wall of the contact switch cavity 25, a first contact switch 28 is fixedly connected to the right end surface of the contact sliding plate 26, and a second contact switch 29 opposite to the first contact switch 28 is fixedly arranged on the right wall of the contact switch cavity 25.

Beneficially, a driven slider cavity 20 is arranged at the rear side of the lead screw cavity 12, a driven slider 21 capable of sliding left and right is arranged in the driven slider cavity 20, the connecting rope 18 is fixedly connected to the left end surface of the driven slider 21, a driven slider spring 22 surrounding the connecting rope 18 is fixedly connected between the left end surface of the driven slider 21 and the left wall of the driven slider cavity 20, and the elastic force of the driven slider spring 22 is far smaller than that of the threaded slider spring 19.

Beneficially, the swinging device 102 comprises two lifting rope chutes 58 respectively communicated with the left side and the right side of the swinging rotating shaft cavity 37, two lifting rope chutes 58 on the left side and the right side are respectively communicated with lifting sliding plate cavities 59 provided with bilateral symmetry, two lifting rope chutes 58 on the right side and the left side are located in the swinging rotating shaft cavity 37, a swinging crank 55 is fixedly sleeved on the outer circular surface of the swinging rotating shaft 38, two swinging cranks 55 are arranged on the left side and the right side, two end surfaces and two left sides of the swinging crank 55 are fixedly connected between two left and right walls of the swinging rotating shaft cavity 37, a swinging crank spring 56 surrounding the swinging rotating shaft 38 is fixedly connected with the left side and the right side, a hinging block 57 is hinged on the upper side of the swinging crank 55, two left and right sides are fixedly connected with lifting ropes 61 on the left side and the right side, two left and right sides are respectively provided with lifting sliding plates 60 capable of sliding up and down in the lifting And lifting electromagnets 63 which are bilaterally symmetrical are respectively and fixedly arranged in the upper walls of the left lifting slide plate cavity 59 and the right lifting slide plate cavity on the lower end surface.

Beneficially, a cloth rolling cylinder cavity 50 with a backward opening is arranged at the rear side in the cloth cutting machine body 11, a cloth rolling cylinder rotating shaft 51 is rotatably connected between the left wall and the right wall of the cloth rolling cylinder cavity 50, a cloth 52 is fixedly sleeved on the outer circular surface of the cloth rolling cylinder rotating shaft 51, and a cloth guide cavity 53 is communicated between the cloth rolling cylinder cavity 50 and the cloth outlet 54.

The following will describe in detail the steps of an automatic textile fabric cutting machine for spreading the fabric at the cutting position with reference to fig. 1 to 5:

in an initial state, the left and right swing crank springs 56 enable protruding ends of the left and right swing cranks 55 to face downwards, the left and right swing rods 40 are located at upper limit positions, the left and right lifting sliding plates 60 are located at lower limit positions, the translation sliding block 15 is located at a left limit position in the screw rod cavity 12, the contact sliding plate spring 27 enables the contact sliding plate 26 to be located at a left limit position, the threaded sliding block spring 19 enables a front end face of the threaded sliding block 17 to abut against an outer circular surface thread of the screw rod 14, the driven sliding block 21 is located at a right limit position in the driven sliding block cavity 20, and the left and right rotating sleeves 45 are close.

When the cloth cutting machine works, a user manually rotates cloth 52 and enables the cloth 52 to extend into a cloth outlet 54 through a cloth guide cavity 53 so as to be conveniently tiled on a cutting table surface, the user fixes the cloth 52 on the cutting table surface through auxiliary cutting equipment, an extension motor 41 is started, the extension motor 41 drives an extension rotating shaft 42 to rotate, the extension rotating shaft 42 drives a rotating disc 43 to rotate, and further drives power rods 48 on the left side and the right side to rotate, the power rods 48 on the left side and the right side drive rotating sleeves 45 to rotate, a swinging rod 40 enables the left rotating sleeve 45 and the right rotating sleeve 45 to be mutually separated through threads, and further enables the left power rod 48 and the right power rod 48 to relatively slide in a guide sliding sleeve cavity 47, meanwhile, a lifting electromagnet 63 is electrified, the lifting electromagnet 63 drives a left lifting sliding plate 60 and a right lifting sliding plate 60 to upwards slide through magnetic force, the left lifting sliding plate 60 and the right, the left and right lifting ropes 61 drive the left and right hinged blocks 57 to swing upwards, the left and right hinged blocks 57 drive the left and right swinging cranks 55 to swing upwards and twist the left and right swinging crank springs 56, so as to twist the left and right swinging rotating shafts 38, the left and right swinging rotating shafts 38 swing the left and right swinging rods 40 to the lower limit position through the left and right swinging connecting rods 39, the left and right swinging rods 40 press the cloth 52 and elastically deform the cloth 52, at this time, the translation motor 13 is started, the translation motor 13 drives the screw rod 14 to rotate, the screw rod 14 slides the screw slider 17 rightwards through the screw thread, the screw slider 17 drives the translation slider 15 to slide rightwards and stretch the return spring 23, the screw slider 17 drives the driven slider 21 to slide leftwards through the connecting rope 18, the driven slider 21 slides leftwards and compresses the driven slider spring 22, the translation slider 15 drives the translation slider connecting rod 32 to, the translational slide block connecting rod 32 drives the cutting machine 33 to slide rightwards, meanwhile, the cutting motor 34 is started, the cutting motor 34 drives the cutting rotating shaft 35 to rotate, the cutting rotating shaft 35 drives the cutting knife 36 to rotate, and further cuts the cloth 52, when the translational slide block 15 moves to the right limit position in the screw rod cavity 12, the elastic force of the driven slide block spring 22 is larger than that of the threaded slide block spring 19, the driven slide block 21 drives the threaded slide block 17 to slide forwards through the connecting rope 18 and compress the threaded slide block spring 19, the rear end face of the threaded slide block spring 19 is separated from the thread on the outer circumferential face of the screw rod 14, at the moment, the translational slide block 15 loses thread constraint, the reset spring 23 drives the translational slide block 15 to slide leftwards rapidly, because the translational slide block 15 is in an overweight state at the moment, the contact slide plate 26 slides rightwards and stretches, and then the left and right two lifting electromagnets 63 are powered off, the left and right two lifting slide plate springs 62 drive the lifting slide plate 60 to slide downwards, the swinging crank spring 56 makes the protruding end of the swinging crank 55 swing downwards through elastic force, the left and right two swinging cranks 55 drive the left and right two swinging rotating shafts 38 to rotate, the left and right two swinging connecting rods 39 drive the left and right two swinging rods 40 to swing upwards, when the return spring 23 drives the translation slider 15 to slide to a left limit position, static friction between the left and right two end surfaces of the threaded slider 17 and the left and right two walls of the threaded slider cavity 16 is converted into dynamic friction, and the threaded slider spring 19 makes the rear end surface of the threaded slider 17 reengage with the thread of the outer circular surface of the screw 14 through elastic force.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an automatic weaving fabric cutting machine of extension cutting department cloth, includes the fabric cutting fuselage, its characterized in that: the cloth cutting machine is characterized in that a cutting machine translation cavity with a forward opening is arranged at the lower side in the cloth cutting machine body, a swing rotating shaft cavity which is positioned at the upper side of the cutting machine translation cavity and is bilaterally symmetrical is arranged in the cloth cutting machine body, the right wall and the right side of the swing rotating shaft cavity are respectively and rotationally connected with a swing rotating shaft which is bilaterally symmetrical, the left end surface and the right end surface of the swing rotating shaft extend to the left side and the right side of the cloth cutting machine body respectively and are respectively and fixedly connected with swing connecting rods which are bilaterally symmetrical, the right end surface and the right end surface of the swing connecting rod are respectively and fixedly connected with swing rods which are bilaterally symmetrical, the outer circular surfaces of the left swing rod and the right swing sleeve are respectively sleeved with a rotating sleeve which is bilaterally symmetrical, the swing rods are in threaded connection with the rotating sleeve, rotating sleeve cavities are arranged in the left rotating sleeve and the right sleeve, a left and a right penetrating guide sliding sleeve cavities are arranged in the guide sliding sleeve, a right side extension motor is fixedly arranged in the swinging rods, the left side of the extension motor is in power connection with an extension rotating shaft, the left end surface of the extension rotating shaft extends to a left and a right two swinging rods, and the axis of the swinging rods is fixedly connected with a rotating disc, the upper and lower sides of the left and the right end surfaces of the rotating disc are respectively and fixedly connected with symmetrical power rods, the power rods on the left and the right sides respectively penetrate through the guide sliding sleeve cavities and extend into the rotating sleeve cavities, a cloth outlet which is positioned on the lower side of the translation cavity of the cutting machine and has a forward opening is arranged in the cloth cutting machine body, a cutting machine capable of sliding left and right is arranged in the translation cavity of the cutting machine, a cutting motor is fixedly arranged in the cutting machine, the front, the cloth cutting machine is characterized in that the cutting knife can cut cloth, a translation device is arranged on the rear side of the cutting machine and can assist the cutting knife in cutting the cloth, swing devices are arranged in the cavities of the left swing rotating shaft and the right swing rotating shaft and can control the swing connecting rods to swing up and down, and then the left swing connecting rod and the right swing connecting rod swing up and down.

2. An automatic fabric cutting machine for spreading the cut fabric as claimed in claim 1, wherein: the translation device comprises a translation sliding block connecting rod sliding chute communicated with the rear side of the translation cavity of the cutting machine, a screw rod cavity is communicated with the rear side of the sliding chute of the connecting rod of the translation sliding block, a translation motor is fixedly arranged in the left wall of the screw rod cavity, the right end face of the translation motor is dynamically connected with a screw rod, a translation sliding block capable of sliding left and right is arranged in a screw rod cavity, the front end surface of the translation sliding block is fixedly connected with a translation sliding block connecting rod, the front end surface of the translation sliding block connecting rod is fixedly connected with the rear end surface of the cutting machine, a return spring surrounding the screw rod is fixedly connected between the left end surface of the translation sliding block and the left wall of the screw rod cavity, a threaded slide block cavity is arranged at the inner front side of the translation slide block, a threaded slide block capable of sliding back and forth is arranged in the threaded slide block cavity, the rear end face of the threaded sliding block is fixedly connected with a connecting rope, and a threaded sliding block spring surrounding the connecting rope is fixedly connected between the rear end face of the threaded sliding block and the rear wall of the threaded sliding block cavity.

3. An automatic fabric cutting machine for spreading the cut fabric as claimed in claim 2, wherein: the threaded sliding block cavity is arranged to incline towards the left front of the right rear box, and the friction force between the left wall and the right wall of the threaded sliding block cavity and the left end face and the right end face of the threaded sliding block are balanced with the friction force of the threaded sliding block spring.

4. An automatic fabric cutting machine for spreading the cut fabric as claimed in claim 1, wherein: the contact switch device is characterized in that a contact switch cavity is arranged in the translation sliding block and located on the rear side of the threaded sliding block cavity, a contact sliding plate capable of sliding left and right is arranged in the contact switch cavity, a contact sliding plate spring is fixedly connected between the left end face of the contact sliding plate and the left wall of the contact switch cavity, a first contact switch is fixedly connected to the right end face of the contact sliding plate, and a second contact switch right opposite to the first contact switch is fixedly arranged on the right wall of the contact switch cavity.

5. An automatic fabric cutting machine for spreading the cut fabric as claimed in claim 2, wherein: the lead screw chamber rear side is equipped with the follower slide block chamber, the follower slide block intracavity is equipped with the follower slide block of ability horizontal slip, connect rope fixed connection in the follower slide block left end face, the follower slide block left end face with fixedly connected with encircle between the follower slide block chamber left wall in connect the follower slide block spring of rope, follower slide block spring elasticity is far less than thread slider spring elasticity.

6. An automatic fabric cutting machine for spreading the cut fabric as claimed in claim 1, wherein: the swinging device comprises lifting rope chutes respectively communicated with the upper sides of the left and right swinging rotating shaft cavities, the upper sides of the left and right lifting rope chutes are respectively communicated with lifting sliding plate cavities provided with bilateral symmetry, the outer circular surfaces of the left and right swinging rotating shafts positioned in the swinging rotating shaft cavities are fixedly sleeved with swinging cranks, the left and right two left end surfaces of the swinging cranks and the left and right two walls of the swinging rotating shaft cavities are fixedly connected with swinging crank springs surrounding the swinging rotating shafts, the upper sides of the left and right swinging cranks are hinged with hinged blocks, the upper end surfaces of the left and right hinged blocks are fixedly connected with lifting ropes which are bilateral symmetry, lifting sliding plates capable of sliding up and down are arranged in the left and right lifting sliding plate cavities, and the left and right lifting ropes respectively penetrate through the left and right two lifting rope chutes and are fixedly connected with the lower end surfaces of the, and lifting electromagnets which are bilaterally symmetrical are respectively and fixedly arranged in the upper walls of the left and right lifting slide plate cavities.

7. An automatic fabric cutting machine for spreading the cut fabric as claimed in claim 1, wherein: the fabric cutting machine is characterized in that a fabric rolling cylinder cavity with a backward opening is formed in the rear side in the fabric cutting machine body, a fabric rolling cylinder rotating shaft is rotatably connected between the left wall and the right wall of the fabric rolling cylinder cavity, a fabric is fixedly sleeved on the outer circular surface of the fabric rolling cylinder rotating shaft, and a fabric guide cavity is communicated with the fabric outlet.