CN116180424A - Automatic clamping fixed-length cloth cutting machine - Google Patents

Abstract

The invention discloses an automatic clamping fixed-length cloth cutting machine, which comprises: the frame is provided with over-and-under type accepting mechanism and cutting mechanism on the frame, is provided with unreeling mechanism in the rear side of frame, over-and-under type accepting mechanism includes: the conveying belt is connected with the four lifting seats, and each lifting seat is connected with the four connected first triaxial commutators through screws; the cutting mechanism includes: the three-shaft reversing machine comprises two vertical seats, wherein two synchronous belt groups and sliding rails are respectively arranged on the two vertical seats, the two synchronous belt groups are connected with a third three-shaft reversing machine, a sliding seat is respectively arranged in the two sliding rails in a sliding clamping mode, the sliding seat is connected with the synchronous belt groups, a cloth spreading component is arranged between the two sliding seats, a cloth pressing component is arranged on the rear side of the cloth spreading component, and a cutting component is arranged on a mounting plate in the cloth pressing component. The invention not only can realize automatic clamping and fixed-length cutting, but also can adjust the height of the conveying belt to ensure that the cloth can be orderly stacked and improve the bearing capacity of the conveying belt.

Description

Automatic clamping fixed-length cloth cutting machine

Technical Field

The invention relates to the technical field of cloth cutting, in particular to an automatic clamping fixed-length cloth cutting machine.

Background

When producing medical instruments such as surgical hole towels, protective clothing and the like, the medical disposable non-woven fabrics are required to be cut, and then sewn according to the production process. Currently, there are two general structures of cloth cutting machines on the market, one of which is as follows: a cloth cutting machine of CN208167395U, the cloth cutting machine comprising: the cloth cutting machine comprises a frame, wherein a placing plate is arranged on the frame, two pressing plates are symmetrically arranged on the placing plate, a guide frame is arranged on the placing plate, a cutter frame is arranged on the guide frame in a sliding manner, a cutting knife is arranged on the cutter frame in a rotating manner, long grooves which correspond to the cutting knife up and down are arranged on the placing plate, a worker pulls cloth on a cloth roll to the placing plate, then the two pressing plates are pressed on two sides of the cloth, then the cutting knife is lowered, the cutting knife stretches into the long grooves, then the cutting knife is enabled to cut the cloth by the sliding cutter frame, the efficiency of the cloth cutting machine with the structure is low, the cut cloth needs to be taken down from the placing plate once, and the cut cloth is easy to skew when being pulled manually, so that the cut end part of the cut cloth is uneven easily; and the other is as bulletin number: according to the technical cloth fixed-length cutting device of CN216274944U, when the technical cloth is cut to a fixed length, cloth is wound around from the top of the guide wheel and horizontally passes through the space between the moving blocks on two sides of the vertical position, the cutting mechanism is driven by starting one side of the fixed-length cutting device to clamp the cloth and cut to a fixed length, the rotating circle number of the threaded rod is driven by starting the servo motor to control the moving distance of the moving blocks relative to the connecting column, when the two moving blocks for clamping the cloth pull the cloth to the position with the set length, the cutting mechanism is driven by starting the other side of the fixed-length cutting device to clamp the cloth and cut to a fixed length, and the cut cloth falls outside or is placed in a peripheral frame through the blanking opening.

Disclosure of Invention

The invention aims to provide an automatic clamping fixed-length cloth cutting machine which can automatically clamp cloth to perform fixed-length cutting work, cut cloth can be orderly stacked on a conveying belt, and when the height of the cloth stack on the conveying belt prevents the sliding action of a sliding plate in a cloth spreading mechanism, the cloth stack can automatically descend to avoid the sliding plate.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: automatic centre gripping fixed length fabric cutting machine includes: the frame is provided with over-and-under type accepting mechanism and cutting mechanism on the frame, is provided with unreeling mechanism in the rear side of frame, over-and-under type accepting mechanism includes: the two belt rollers of the conveying belt are respectively and rotatably arranged in four lifting seats, a screw rod is respectively and threadedly connected in each lifting seat, each screw rod is respectively connected with a longitudinal output shaft of one first triaxial commutator, the four first triaxial commutators are connected with the machine base, the two first triaxial commutators positioned at the front side are connected through a first connecting rod, the two first triaxial commutators positioned at the rear side are also connected through a first connecting rod, the two first triaxial commutators positioned at any left side and any right side are connected with a second triaxial commutators through a second connecting rod, and the second triaxial commutators are connected with a first speed reducing motor; the cutting mechanism includes: the belt clamping device comprises two vertical seats arranged on a machine base, wherein the two vertical seats are respectively positioned on the left side and the right side of a conveying belt, a gap is reserved between the two vertical seats and the conveying belt, the two vertical seats are higher than the conveying belt, a synchronous belt group and a sliding rail are respectively arranged on the two vertical seats, a driving pulley in the two synchronous belt groups is connected with a third triaxial commutator through a third connecting rod, the third triaxial commutator is connected with a second gear motor, a sliding seat is respectively clamped in the two sliding rails in a sliding manner, belt clamps are arranged on the sliding seats, the belt clamps are clamped on synchronous belts in synchronous belt groups on the same side, the two sliding seats upwards extend out of the vertical seats after penetrating through the corresponding gaps, a cloth pulling assembly is arranged between the two sliding seats, and the cloth pulling assembly comprises: the sliding plate that links to each other with two sliding seats is provided with a plurality of first arms of grabbing at the rear end equidistance interval of sliding plate, goes up and down at the sliding plate and is provided with first clamp plate, is provided with a plurality of first arms of grabbing at the rear end equidistance interval of first clamp plate, and first arm of grabbing is equidistant, equilong with first arm of grabbing down, and first arm of grabbing aligns from top to bottom with first arm of grabbing down, is provided with the cloth pressing subassembly at the rear side of cloth pressing subassembly, the cloth pressing subassembly includes: the mounting panel that sets up between two stands, the mounting panel is located the rear side of sliding plate, the front end equidistance interval at the mounting panel is provided with a plurality of second lower grab arms, the second lower grab arms is high with the first lower grab arm on the sliding plate equal to, and crossing wrong, it is provided with the second clamp plate to go up and down at the mounting panel, the rear end of second clamp plate upwards bends and is provided with the backplate, through smooth circular arc transitional coupling between backplate and the second clamp plate, be provided with a plurality of second at the front end equidistance interval of second clamp plate and go up grab arms, the second is gone up grab arms and second lower grab arms equal width, equilong, the second is gone up grab arms and is gone up grab arms down to align with the second, be provided with on the mounting panel and cut the subassembly, it includes to cut the subassembly: the left and right directions are set up the rodless cylinder on the mounting panel, are connected with the cutting seat on the slider of rodless cylinder, are provided with the cutting knife on the cutting seat, and the cutting knife links to each other with fourth gear motor.

Further, the automatic clamping fixed-length cloth cutting machine, wherein the unreeling mechanism comprises: the support is provided with an air expansion shaft, the air expansion shaft is connected with a third gear motor, a first positioning ring is sleeved on the air expansion shaft, a transition shaft is arranged on the front side of the air expansion shaft, a second positioning ring is sleeved on the transition shaft, and the right end wall of the first positioning ring is aligned with the right end wall of the second positioning ring.

Further, the automatic clamping fixed-length cloth cutting machine is characterized in that the first positioning ring is a rubber sleeve ring, a countersunk screw hole is formed in the second positioning ring, a countersunk screw is connected in the countersunk screw hole in a threaded mode, and the countersunk screw is immersed in the countersunk screw hole and abuts against the transition shaft.

Further, the automatic clamping fixed-length fabric cutting machine, wherein the rear ends of the two vertical seats are provided with a deviation rectifying and tensioning mechanism, and the deviation rectifying and tensioning mechanism comprises: the automatic ratchet mechanism comprises two upright seats, a rotating seat, a ratchet wheel, pawls and a double-shaft deviation correcting rod, wherein the rear ends of the two upright seats are respectively provided with the rotating seat, the double-shaft deviation correcting rod is rotatably arranged in the two rotating seats, the left end and the right end of the double-shaft deviation correcting rod are respectively provided with a baffle, the right wall of the baffle positioned at the left side is aligned with the right end wall of the second positioning ring, the ratchet wheel is arranged at any end of the double-shaft deviation correcting rod, the pawls are rotatably arranged on the upright seats at the same side with the ratchet wheel, and the pawls are downwards buckled on the ratchet wheel.

Further, the automatic clamping fixed-length cloth cutting machine is characterized in that a first vertical plate is arranged on the left side and the right side of the sliding plate respectively, a first transverse plate is arranged between the two first vertical plates, three first lifting cylinders are arranged on the first transverse plate at intervals, a first connecting block is arranged on piston rods of the three first lifting cylinders respectively, and the three first connecting blocks are connected with the first pressing plate.

Further, the automatic clamping fixed-length cloth cutting machine is characterized in that a second vertical plate is arranged on the left side and the right side of the mounting plate respectively, a second transverse plate is arranged between the two second vertical plates, three second lifting cylinders are arranged on the second transverse plate at intervals, a second connecting block is arranged on piston rods of the three second lifting cylinders respectively, the three second connecting blocks are connected with a second pressing plate, a rodless cylinder is arranged between the two second vertical plates, an adjusting guide rail is further arranged between the two second vertical plates, the adjusting guide rail is located above the rodless cylinder, a proximity switch is arranged on the guide block in a sliding mode, a threaded through hole is formed in the guide block, and a set screw is tightly fixed on the adjusting guide rail after penetrating through the guide block.

Further, the automatic clamping fixed-length fabric cutting machine is characterized in that rubber plates are arranged on the top walls of the sliding plate and the first lower grabbing arms, rubber plates are arranged on the bottom walls of the first pressing plate and the first upper grabbing arms, rubber plates are arranged on the top walls of the mounting plate and the second lower grabbing arms, and rubber plates are arranged on the bottom walls of the second pressing plate and the second upper grabbing arms.

Further, the automatic clamping fixed-length cloth cutting machine is characterized in that a reinforcing plate is connected between every two adjacent lifting seats.

Further, the automatic clamping fixed-length cloth cutting machine is characterized in that a supporting plate is arranged between the two vertical seats, and the second gear motor is fixed on the supporting plate.

The invention has the advantages that: in the cutting process, except that the cloth is required to be manually pulled into a space between the mounting plate and the second pressing plate to be clamped when a new cloth roll is mounted each time, the cloth is automatically clamped, pulled out and cut in a fixed length during the subsequent fixed length cutting operation, each first lower gripping arm on the sliding plate in the cloth pulling assembly extends into a gap between two corresponding adjacent second lower gripping arms respectively, then three first lifting cylinders are started to drive the first pressing plate to move downwards, each first upper gripping arm on the first pressing plate passes through the gap between the two corresponding connected second upper gripping arms and then is pressed by the corresponding first lower gripping arms, the automatic fixed length pulling is realized by driving two synchronous belt groups to drive the sliding plate and the first pressing plate on the sliding plate to move forwards quantitatively through a second speed reducing motor, and the automatic cutting is realized by driving a rotating cutting knife to cut the cloth through a rodless cylinder driving sliding block in the cutting assembly, so that the cut cloth is accurate in size and the cut cloth quality can be ensured to be level; through adjusting conveyor belt's height can make have the best blanking distance between conveyor belt and the cloth, guarantees that the cloth that cuts out can neatly pile up on conveyor belt, can reduce conveyor belt's height when the too high removal action that influences the sliding plate in the granny rag subassembly of cloth that stacks on conveyor belt again to dodge the sliding plate, do not influence the action of granny rag subassembly, and then improve conveyor belt's bearing capacity.

Drawings

Fig. 1 is a schematic structural view of an automatic clamping fixed-length fabric cutting machine according to the present invention.

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

Fig. 3 is a schematic view of the structure in the front view direction in fig. 2.

Fig. 4 is a schematic structural view of the elevating receiving mechanism in fig. 1.

Fig. 5 is a schematic view of the structure in the front view direction in fig. 4.

Fig. 6 is a schematic structural view of the cutting mechanism in fig. 1.

Fig. 7 is a schematic view of the structure in the front view direction in fig. 6.

Fig. 8 is a partially enlarged schematic view of the structure in the direction a in fig. 6.

Fig. 9 is a partially enlarged schematic view of the B direction in fig. 6.

Detailed Description

The technical scheme of the invention is further described below with reference to the attached drawings and the preferred embodiments.

As shown in fig. 1 to 9, the automatic clamping fixed-length cloth cutting machine of the present invention comprises: the machine base 1, be provided with over-and-under type accepting mechanism and cutting mechanism on machine base 1, be provided with unreeling mechanism at the rear side of machine base 1, over-and-under type accepting mechanism includes: in the conveying belt 2, two belt rollers 21 of the conveying belt 2 are respectively and rotatably arranged in four lifting seats 3, namely, the left end and the right end of the belt roller 21 at the front side in the conveying belt 2 are respectively and rotatably arranged in two lifting seats 3 at the front side, the left end and the right end of the belt roller 21 at the rear side in the conveying belt 2 are respectively and rotatably arranged in two lifting seats 3 at the rear side, a reinforcing plate 31 is connected between every two adjacent lifting seats 3, the reinforcing plate 31 can increase the connection strength between the two adjacent lifting seats 3, the four lifting seats 32 are equal in height, so that the conveying belt 31 is kept parallel, a screw rod 32 is respectively and threadedly connected in each lifting seat 3, each screw rod 32 is respectively connected with a longitudinal output shaft of one first three-axis reverser 33, the four first three-axis reversers 33 are connected with the machine base 1, the two first three-axis reversers 33 at the front side are connected through a first connecting rod 34, the two first three-axis commutators 33 at the rear side are also connected through a first connecting rod 34, a second connecting rod 35 is respectively connected to the two first three-axis commutators 33 at the right side, the two second connecting rods 35 are connected with a second three-axis commutators 36, the second three-axis commutators 36 are connected with a first gear motor, the first gear motor is fixed on the machine base 1, when the first gear motor drives the second three-axis commutators 36 to rotate, the second three-axis commutators 36 simultaneously drive the two first three-axis commutators 33 at the right side to rotate through the two second connecting rods 35, the two first three-axis commutators 33 at the right side respectively drive the two first three-axis commutators 33 at the left side to simultaneously rotate through the respectively connected first connecting rods 34, thus the four first three-axis commutators 33 can simultaneously drive the respectively connected screw rods 32 to rotate, the screws 32 drive the lifting seats 3 connected with each other to realize synchronous lifting through the screw transmission effect, so that the lifting of the conveying belt 2 is realized.

The cutting mechanism includes: the two vertical seats 4 are arranged on the machine base 1, the two vertical seats 4 are respectively positioned at the left side and the right side of the conveying belt 2, a gap 22 is reserved between the two vertical seats 4 and the conveying belt 2, the two vertical seats 4 are higher than the conveying belt 2, a synchronous belt group 41 and a sliding rail 42 are respectively arranged on the two vertical seats 4, the sliding rail 42 is positioned below the synchronous belt group 41, driving pulleys in the two synchronous belt groups 41 are respectively connected with a third connecting rod 411, the two third connecting rods 411 are connected with a third three-shaft commutator 43, the third three-shaft commutator 43 is connected with a second reducing motor, when the second reducing motor drives the third three-shaft commutator 43 to rotate, the third three-shaft commutator 43 can drive the two third connecting rods 411 to rotate simultaneously, the two third connecting rods 411 can drive the driving pulleys connected with the synchronous belt groups 41 to move synchronously and in the same direction, a supporting plate 44 is arranged between the two vertical seats 4, the supporting plate 44 can improve the connection strength between the two vertical seats 4, a second gear motor is fixed on the supporting plate 44, one sliding seat 45 is respectively and slidably clamped in the two sliding rails 42, a belt clamp 451 is arranged on the sliding seat 45, the belt clamp 451 is clamped on a synchronous belt in the synchronous belt group 41 at the same side, the two sliding seats 45 penetrate through corresponding gaps 22 and extend upwards from the vertical seats 4, a cloth pulling assembly is arranged between the two sliding seats 45, the cloth pulling assembly comprises a sliding plate 5 connected with the two sliding seats 45, a plurality of first lower grabbing arms 51 are arranged at equal intervals at the rear end of the sliding plate 5, rubber plates are respectively arranged on the top walls of the sliding plate 5 and the first lower grabbing arms 51, a first vertical plate 52 is respectively arranged on the left side and the right side of the sliding plate 5, a first transverse plate 53 is arranged between the two first vertical plates 52, three first lifting cylinders 54 are arranged on the first transverse plate 53 at intervals, a first connecting block is respectively arranged on piston rods of the three first lifting cylinders 54, a first pressing plate 55 is arranged among the three first connecting blocks, a plurality of first upper grabbing arms 56 are arranged at equal intervals at the rear end of the first pressing plate 55, rubber plates are arranged on the bottom walls of the first pressing plate 55 and the first upper grabbing arms 56, the first upper grabbing arms 56 and the first lower grabbing arms 51 are equal in width and equal in length, the first upper grabbing arms 56 are aligned up and down with the first lower grabbing arms 51, and when the two synchronous band groups 41 move synchronously and in the same direction, the sliding seats 45 connected with the sliding plates can be driven to move synchronously and in the same direction, so that the sliding plates 5 and the first pressing plates 55 on the sliding plates 5 are driven to move forwards and backwards; a cloth pressing assembly is arranged at the rear side of the cloth spreading assembly, and the cloth pressing assembly comprises: the mounting plate 6 arranged between the two vertical seats 4, the mounting plate 6 is positioned at the rear side of the sliding plate 5, a plurality of second lower gripping arms 61 are arranged at the front end of the mounting plate 6 at equal intervals, the second lower gripping arms 61 are equal in height and staggered with the first lower gripping arms 51 on the sliding plate 5, rubber plates are arranged on the top walls of the mounting plate 6 and the second lower gripping arms 61, a second vertical plate 62 is respectively arranged on the left side and the right side of the mounting plate 6, a second transverse plate 63 is arranged between the two second vertical plates 62, three second lifting cylinders 64 are arranged on the second transverse plate 63 at intervals, a second connecting block is respectively arranged on piston rods of the three second lifting cylinders 64, a second pressing plate 65 is arranged between the three second connecting blocks, a guard plate is arranged at the rear end of the second pressing plate 65 upwards, a plurality of second upper gripping arms 66 are arranged between the guard plate and the second pressing plate 65 at equal intervals through smooth circular arc transition connection, a plurality of second upper gripping arms 66 are arranged on the bottom walls of the second pressing plate 65 and the second upper gripping arms 66, a second upper gripping arms 66 are arranged between the second pressing plate 65 and the second upper gripping arms 66 and the second lifting arms 66 at equal intervals, a second gripping arm 66 and the second upper gripping arms 61 and the second lower gripping arms 61 are arranged at equal in length and equal to each other, and the second gripping arms are bent and the second gripping arms are arranged between the second gripping arms and the second gripping arms are equal in length and the second lifting arms 66 are equal in length and equal to each cut. The left and right directions are set up the rodless cylinder 7 between two second risers 62, the rodless cylinder 7 is located the top of the second clamp plate 65, be connected with the cutting seat 72 on the slider 71 of rodless cylinder 7, be provided with the cutting knife 73 on cutting seat 72, the cutting knife 73 links to each other with the fourth gear motor 74, still be provided with the regulating rail 75 between two second risers 62, regulating rail 75 is located the top of rodless cylinder 7, slide and block and be equipped with a guide block 76 in regulating rail 75, be provided with proximity switch 77 on guide block 76, be provided with the screw through-hole on guide block 76, threaded connection has holding screw 78 in the screw through-hole, holding screw 78 passes the guide block 76 and then fixes on regulating rail 75.

The rear ends of the two vertical seats 4 are provided with a deviation rectifying and tensioning mechanism, and the deviation rectifying and tensioning mechanism comprises: the cloth feeding device comprises a swivel seat 8, a ratchet wheel 81, a pawl 82 and a double-shaft deviation rectifying rod 83, wherein the rear ends of the two vertical seats 4 are respectively provided with the swivel seat 8, the double-shaft deviation rectifying rod 83 is rotationally arranged in the two swivel seats 8, the left end and the right end of the double-shaft deviation rectifying rod 83 are respectively provided with a baffle 831, any end of the double-shaft deviation rectifying rod 83 is provided with the ratchet wheel 81, the pawl 82 is rotationally arranged on the vertical seat 4 on the same side with the ratchet wheel 81, the pawl 82 is downwards buckled on the ratchet wheel 81, when the cloth is wound on the double-shaft deviation rectifying rod 83 from an unreeling mechanism, the double-shaft deviation rectifying rod 83 needs to be rotated to a position higher than a mounting plate 6, and therefore, when the cloth stretches into a position between the mounting plate 6 and a second pressing plate 65 from top to bottom, the cloth only contacts with a smooth arc between the second pressing plate 65 and the baffle, and the smooth arc does not damage the surface of the cloth.

The unreeling mechanism comprises: the support 9 arranged at the rear side of the stand 1, the inflatable shaft 91 is arranged on the support 9, the inflatable shaft 91 is connected with the third gear motor 92, the inflatable shaft 91 is sleeved with the first positioning ring 93, the first positioning ring 93 is a rubber sleeve ring, so that after the inflatable shaft 91 is inflated and raised, the first positioning ring 93 can be unfolded along with the raised portion of the inflatable shaft 91, the front side of the inflatable shaft 91 is provided with the transition shaft 94, the transition shaft 94 is sleeved with the second positioning ring 95, the second positioning ring 95 is provided with a countersunk head screw hole, countersunk head screw 96 is connected with the countersunk head screw hole in a threaded manner, the countersunk head screw 96 is immersed in the countersunk head screw hole and is abutted against the transition shaft 94, the right end wall of the first positioning ring 93 is aligned with the right end wall of the second positioning ring 95, and the right end wall of the baffle 831 positioned at the left side in the double-shaft correcting rod 83 is aligned with the right end wall of the second positioning ring 95.

The working principle is as follows: the worker firstly places the cloth roll on the air expansion shaft 91, the left side wall of the cloth roll is abutted against the first positioning ring 93, then the cloth on the cloth roll is wound on the top of the transition shaft 94, the left end of the cloth is abutted against the second positioning ring 95, then downwards wound on the bottom of the shaft below the double-shaft deviation rectifying rod 83, upwards wound on the top of the shaft above the double-shaft deviation rectifying rod 83, the left end of the cloth in the double-shaft deviation rectifying rod 83 is abutted against the left baffle 831, and then forwards stretches into the space between the mounting plate 6 and the second pressing plate 65, in the process, the transition shaft 94 plays a role in tensioning and rectifying the cloth between the double-shaft deviation rectifying rod 83 and the air expansion shaft 91, the three second lifting cylinders 64 drive the second pressing plate 65 to move downwards, the second upper gripping arms 66 on the second pressing plate 65 are matched with the second lower gripping arms 61 on the mounting plate 6 to press the cloth, then the double-shaft deviation correcting rod 83 is pulled backwards to tension the cloth on the double-shaft deviation correcting rod 83, the ratchet wheel 81 is matched with the pawl 82 to prevent the double-shaft deviation correcting rod 83 from resetting forwards, then the position of the proximity switch 77 is adjusted according to the width of the cloth, the proximity switch 77 moves along the adjusting guide rail 75 to enable the right end of the proximity switch 77 to be aligned up and down, and then the cloth is locked through the set screw 78.

The second gear motor is started to drive the two synchronous belt groups 41 to move after synchronous phase, the two synchronous belt groups 41 drive the sliding plate 5 and the first pressing plate 55 on the sliding plate 5 to move backwards until each first lower gripping arm 51 on the sliding plate 5 stretches into a gap between the corresponding two adjacent second lower gripping arms 61 respectively, each first lower gripping arm 51 is positioned below the pressed cloth, simultaneously, three first lifting cylinders 54 are started to drive the first pressing plate 55 to move downwards, each first upper gripping arm 56 on the first pressing plate 55 passes through the gap between the corresponding two connected second upper gripping arms 66 and then is matched with the corresponding first lower gripping arm 51 to press the cloth, then the second pressing plate 65 moves upwards to loosen the cloth, the second gear motor drives the sliding plate 5 and the first pressing plate 55 to move forwards through the two synchronous belt groups 41 and the sliding seat 45, the sliding plate 5 and the first pressing plate 55 can pull the cloth forwards, when the length of the pulled cloth is the required length, the sliding plate 5 and the first pressing plate 55 are stopped, the second upper gripping arm 66 on the second pressing plate 65 moves downwards to be matched with the second lower gripping arm 61 on the mounting plate 6 to press the cloth again, then the rodless cylinder 7 drives the sliding block 71 to drive the cutting seat 72 and the cutting knife 73 to move rightwards, the cutting knife 73 rotates at a high speed through the fourth reducing motor 74 in the moving process, the cutting knife 73 rotating at a high speed can cut the cloth in the moving process, the action of the rodless cylinder 7 is stopped when the proximity switch 77 senses the sliding block 71, the cutting knife 73 completes the cutting work of the cloth, the cutting knife 73 resets after the cutting is completed, the rear end of the cut cloth falls on the conveying belt 2, then the first pressing plate 55 moves upwards to release the cloth, the front end of the cut cloth also falls on the conveying belt 2, thus, the cut cloth falls on the conveyor belt 2 completely, the fixed length cutting is repeated, when a large number of cloths are stacked on the conveyor belt 2, the first gear motor is started, and the first gear motor drives the four lifting seats 3 to simultaneously descend through the second three-axis reverser 36, the second connecting rod 35, the first connecting rod 34 and the first three-axis reverser 33, so that the conveyor belt 2 descends, the cloth stacking is prevented from excessively high, the cloth pulling action of the sliding plate 5 and the first pressing plate 55 and the cutting action of the cutting knife 73 are prevented, and finally the conveyor belt 2 is started to convey the cut cloth.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims (9)

1. Automatic centre gripping fixed length fabric cutting machine includes: the frame, its characterized in that: the machine base is provided with a lifting type bearing mechanism and a cutting mechanism, the rear side of the machine base is provided with an unreeling mechanism, and the lifting type bearing mechanism comprises: the two belt rollers of the conveying belt are respectively and rotatably arranged in four lifting seats, a screw rod is respectively and threadedly connected in each lifting seat, each screw rod is respectively connected with a longitudinal output shaft of one first triaxial commutator, the four first triaxial commutators are connected with the machine base, the two first triaxial commutators positioned at the front side are connected through a first connecting rod, the two first triaxial commutators positioned at the rear side are also connected through a first connecting rod, the two first triaxial commutators positioned at any left side and any right side are connected with a second triaxial commutators through a second connecting rod, and the second triaxial commutators are connected with a first speed reducing motor; the cutting mechanism includes: the belt clamping device comprises two vertical seats arranged on a machine base, wherein the two vertical seats are respectively positioned on the left side and the right side of a conveying belt, a gap is reserved between the two vertical seats and the conveying belt, the two vertical seats are higher than the conveying belt, a synchronous belt group and a sliding rail are respectively arranged on the two vertical seats, a driving pulley in the two synchronous belt groups is connected with a third triaxial commutator through a third connecting rod, the third triaxial commutator is connected with a second gear motor, a sliding seat is respectively clamped in the two sliding rails in a sliding manner, belt clamps are arranged on the sliding seats, the belt clamps are clamped on synchronous belts in synchronous belt groups on the same side, the two sliding seats upwards extend out of the vertical seats after penetrating through the corresponding gaps, a cloth pulling assembly is arranged between the two sliding seats, and the cloth pulling assembly comprises: the sliding plate that links to each other with two sliding seats is provided with a plurality of first arms of grabbing at the rear end equidistance interval of sliding plate, goes up and down at the sliding plate and is provided with first clamp plate, is provided with a plurality of first arms of grabbing at the rear end equidistance interval of first clamp plate, and first arm of grabbing is equidistant, equilong with first arm of grabbing down, and first arm of grabbing aligns from top to bottom with first arm of grabbing down, is provided with the cloth pressing subassembly at the rear side of cloth pressing subassembly, the cloth pressing subassembly includes: the mounting panel that sets up between two stands, the mounting panel is located the rear side of sliding plate, the front end equidistance interval at the mounting panel is provided with a plurality of second lower grab arms, the second lower grab arms is high with the first lower grab arm on the sliding plate equal to, and crossing wrong, it is provided with the second clamp plate to go up and down at the mounting panel, the rear end of second clamp plate upwards bends and is provided with the backplate, through smooth circular arc transitional coupling between backplate and the second clamp plate, be provided with a plurality of second at the front end equidistance interval of second clamp plate and go up grab arms, the second is gone up grab arms and second lower grab arms equal width, equilong, the second is gone up grab arms and is gone up grab arms down to align with the second, be provided with on the mounting panel and cut the subassembly, it includes to cut the subassembly: the left and right directions are set up the rodless cylinder on the mounting panel, are connected with the cutting seat on the slider of rodless cylinder, are provided with the cutting knife on the cutting seat, and the cutting knife links to each other with fourth gear motor.

2. The automatic clamping fixed length cloth cutting machine of claim 1, wherein: the unreeling mechanism comprises: the support is provided with an air expansion shaft, the air expansion shaft is connected with a third gear motor, a first positioning ring is sleeved on the air expansion shaft, a transition shaft is arranged on the front side of the air expansion shaft, a second positioning ring is sleeved on the transition shaft, and the right end wall of the first positioning ring is aligned with the right end wall of the second positioning ring.

3. The automatic clamping fixed length cloth cutting machine of claim 2, wherein: the first positioning ring is a rubber sleeve ring, a countersunk screw hole is formed in the second positioning ring, a countersunk screw is connected in the countersunk screw hole in a threaded mode, and the countersunk screw is immersed in the countersunk screw hole and abuts against the transition shaft.

4. The automatic clamping fixed length cloth cutting machine of claim 2, wherein: the rear ends of the two vertical seats are provided with a correction tensioning mechanism, and the correction tensioning mechanism comprises: the automatic ratchet mechanism comprises two upright seats, a rotating seat, a ratchet wheel, pawls and a double-shaft deviation correcting rod, wherein the rear ends of the two upright seats are respectively provided with the rotating seat, the double-shaft deviation correcting rod is rotatably arranged in the two rotating seats, the left end and the right end of the double-shaft deviation correcting rod are respectively provided with a baffle, the right wall of the baffle positioned at the left side is aligned with the right end wall of the second positioning ring, the ratchet wheel is arranged at any end of the double-shaft deviation correcting rod, the pawls are rotatably arranged on the upright seats at the same side with the ratchet wheel, and the pawls are downwards buckled on the ratchet wheel.

5. The automatic clamping fixed length cloth cutting machine according to claim 1 or 2 or 3 or 4, wherein: the left side and the right side of the sliding plate are respectively provided with a first vertical plate, a first transverse plate is arranged between the two first vertical plates, three first lifting cylinders are arranged on the first transverse plate at intervals, a first connecting block is respectively arranged on piston rods of the three first lifting cylinders, and the three first connecting blocks are connected with the first pressing plate.

6. The automatic clamping fixed length cloth cutting machine of claim 5, wherein: the left side and the right side of mounting panel are provided with a second riser respectively, be provided with the second diaphragm between two second risers, be provided with three second lift cylinder on the second diaphragm interval, be provided with a second connecting block respectively on the piston rod of three second lift cylinder, three second connecting block links to each other with the second clamp plate, the rodless cylinder sets up between two second risers, still be provided with the regulation guide rail between two second risers, the regulation guide rail is located the top of rodless cylinder, the slip card is equipped with a guide block in the regulation guide rail, be provided with proximity switch on the guide block, be provided with the screw thread through-hole on the guide block, threaded connection has set screw in the screw thread through-hole, set screw passes the guide block and tightly fixes on the regulation guide rail after.

7. The automatic clamping fixed length cloth cutting machine of claim 1, wherein: the upper wall of the sliding plate and the upper wall of the first lower grabbing arm are respectively provided with a rubber plate, the bottom walls of the first pressing plate and the first upper grabbing arm are respectively provided with a rubber plate, the upper walls of the mounting plate and the second lower grabbing arm are respectively provided with a rubber plate, and the bottom walls of the second pressing plate and the second upper grabbing arm are respectively provided with a rubber plate.

8. The automatic clamping fixed length cloth cutting machine of claim 1, wherein: a reinforcing plate is connected between every two adjacent lifting seats.

9. The automatic clamping fixed length cloth cutting machine of claim 1, wherein: a supporting plate is arranged between the two vertical seats, and a second gear motor is fixed on the supporting plate.

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