CN209957085U - Double-pull cutting device of cloth paving machine - Google Patents

Abstract

A double-pull cutting device of a cloth paving machine belongs to the technical field of clothing machinery. Comprises a hanging rack which is hung on a lifting plate of a lower main machine of a cloth paving machine in a use state; the cloth guide mechanism is arranged on the hanging rack; the tool rest trolley is arranged on the hanging rack; the tool rest trolley driving mechanism is arranged on the hanging rack and connected with the tool rest trolley; a fabric cutting mechanism, this fabric cutting mechanism sets up on the knife rest dolly, characteristics: the cloth guide mechanism is arranged on the rack, and the cloth guide mechanism is arranged on the rack and is used for guiding the cloth to be cut. Because the cloth supporting roller is arranged at the position corresponding to the lower part of the cloth spreading mechanism, the cloth guided out by the cloth guiding mechanism is lifted to the position corresponding to the cloth cutting space by the cloth supporting roller to be cut by the cloth cutting mechanism, thereby meeting the double-control cutting requirement of the cloth spreading machine.

Description

Double pull cutting device for spreader

technical field

The utility model belongs to the technical field of garment machinery, in particular to a double-pulling and cutting device of a cloth spreading machine.

Background technique

The aforementioned double-pull cutting device is a double-pull cloth cutting device. Because the spreading machine can replace manual and realize automatic spreading, it can not only improve the operation efficiency, but also can significantly reduce the work intensity of online operators and save manpower (only check-in personnel), so it is favored by the clothing industry.

There is no lack of technical information about spreaders in the published Chinese patent documents, such as CN201416113Y (automatic cutting mechanism for spreaders), CN201416112Y (adjustable spreader for spreaders), CN201746160U (for spreaders) machine), CN104192632B (cloth spreader), CN204096720U (cloth feeding device of spreader), CN204096750U (improved structure of spreader), CN204198106U (cloth sweeper of spreader), CN104627715B (spreader of spreader) cloth adjusting mechanism), CN105129497B (an automatic cloth threading device on a cloth spreading machine), CN205040911U (a cloth spreading machine), CN207030593U (a simple cloth spreading machine) and CN207918145U (a cloth spreading machine), etc.

Normally, the spreader cuts the cloth only at the single-pull end position, for example, when the cloth is spread from right to left to a predetermined position. However, some users need to make the cloth spreader perform double-pull cutting due to process requirements, for example, when the cloth reaches a predetermined position from right to left and from left to left, the cutting is performed. Spreading from right to left is called forward spreading, while spreading from left to right is called reverse spreading. The position of the stationary bottom blade of the stationary knife can cut the cloth smoothly, while the latter is the opposite, because the cloth cannot be positioned between the aforementioned disc knife and the fixed bottom blade, so it is difficult to cut the cloth. Therefore, if the problem of inability to cut the cloth caused by the reverse spread cannot be eliminated, it will affect the function of the complete spreader. The technical solutions to be introduced below are generated under this background.

SUMMARY OF THE INVENTION

The task of the present invention is to provide a double-pull cutting device for a spreader that is helpful for satisfying the double-pull cutting requirements.

The task of the utility model is accomplished in this way. A double-pull and cutting device for a spreader includes a hanger, which hangs on the lifting plate of the lower main machine of the spreader when in use; a guide a cloth guide mechanism, which is arranged on the hanger; a tool rest trolley, which is movably arranged on the hanger; a tool rest trolley drive mechanism, which is set at the On the hanger and connected with the tool rest trolley; a cloth cutting mechanism, the cloth cutting mechanism is arranged on the tool rest trolley, and is characterized in that it also includes a cloth support roller, the cloth support roller is corresponding to the guide. The position below the cloth mechanism is set on the hanger, and the space between the cloth support roller and the cloth guide mechanism constitutes a cloth cutting space for the cloth cutting mechanism to cut cloth.

In a specific embodiment of the present invention, the hanger includes a trolley guide beam, a frame beam and a pair of hanging arms, and the trolley guide beam constitutes a trolley guide beam that penetrates from the left end to the right end of the trolley guide beam The lower parts of the front and rear cavity walls of the trolley guide beam cavity are folded toward each other to form a pair of trolley roller guide rails. The space between the pair of trolley roller guide rails constitutes a trolley give-away cavity. , the upper ends of a pair of hanging arms each form a hanging arm upper fixing seat, the upper fixing seat of the hanging arm is fixed with the trolley guide beam at a position corresponding to the upper part of the trolley guide beam, and the lower end of the pair of hanging arms faces the trolley guide beam. The lower part of the hanging arm is extended and a hook is formed on the upper part of the rear side of the pair of hanging arms. In the state of use, the hook is hung on the lifting plate of the lower main body, on the front side of the lower end of the pair of hanging arms and in the corresponding Each of the positions of the cloth cutting space is provided with a cavity for a fixed blade; the cloth guide mechanism is arranged between a pair of hanging arms, and the cloth support roller is fixed on the opposite side of the lower ends of the pair of hanging arms. between and corresponding to the front of the cavity for the fixed blade; the trolley of the tool rest together with the cloth cutting mechanism and the pair of trolley roller guide rails form a rolling pair; the drive mechanism of the tool rest trolley is arranged on the on the trolley guide beam.

In another specific embodiment of the present invention, the cloth guide mechanism includes a cloth guide plate fixing beam, a cloth guide plate, a cloth pressing plate, a lifting drive shaft of the cloth pressing plate, a drive shaft driving motor, and a cloth guide plate fixing beam. The beam is fixed between the opposite sides of the pair of hanging arms at the position above the rear side corresponding to the cloth support roller, the lower part of the length direction of the cloth guide plate is fixed with the cloth guide plate fixing beam, and the bottom of the cloth guide plate is fixed. The upper part in the longitudinal direction extends toward the rear and upper part of the clamping plate lifting drive shaft in an inclined state, and the clamping plate lifting driving shaft is rotatably arranged at the upper end of the pair of hanging arms at a position corresponding to the front side of the cloth guide plate In between, the right end of the lifting and lowering drive shaft of the cloth pressing plate extends to the right side of one of the pair of hanging arms located on the right side, and a drive shaft actuating block is fixed, and the cloth pressing plate and the cloth guide plate are fixed to the beam Correspondingly and located above the cloth guide plate, the cloth pressing plate is connected to the lifting and lowering drive shaft of the cloth pressing plate through the interlocking springs of the pressing plate distributed at intervals, and the driving motor of the driving shaft is located on the right side of the pair of hanging walls. The right side of a hanging wall is fixed and a cam for actuating the drive shaft actuating block is arranged on the drive motor shaft of the drive shaft drive motor; the cloth cutting space is formed in front of the cloth guide plate of the cloth guide plate between the side and the back side of the backing roller.

In yet another specific embodiment of the present invention, a flexible pressure cloth strip is provided on the side of the cloth pressure plate facing the cloth guide plate, and the flexible pressure cloth strip is a rubber strip or a nylon strip.

In yet another specific embodiment of the present utility model, the tool rest trolley includes a tool rest trolley body and a pair of roller seats, the tool rest trolley body corresponds to the trolley giving way cavity, and a pair of roller seats are fixed On the upper part of the trolley body of the tool rest, a pair of rollers are respectively rotatably arranged on the pair of roller seats, and the pair of rollers and the pair of trolley roller guide rails constitute a rolling pair; the tool set on the trolley guide beam The carriage trolley driving mechanism is connected with the upper part of the tool carriage carriage body; the cloth cutting mechanism is arranged on the lower part of the tool carriage carriage body.

In yet another specific embodiment of the present invention, the trolley driving mechanism for the tool rest includes a reduction box fixing frame, a trolley body driving reduction box, a trolley body driving motor, a driving wheel, a driven wheel, a driven wheel axle seat and a transmission belt , the reduction box fixing frame is fixed with the right end of the guide beam of the trolley, the driving motor of the trolley body is driven and matched with the driving reduction box of the trolley body, and the reduction box is driven by the trolley body together with the driving motor of the trolley body and the fixing frame of the reduction box. The output shaft of the reduction box of the box faces forward and corresponds to the right cavity opening of the guide beam cavity of the trolley. The driving wheel is fixed on the output shaft of the reduction box, and the driven wheel is fixed on the driven wheel axle seat through the driven wheel shaft. The driving wheel axle seat is fixed to the shield frame at the position corresponding to the left cavity opening of the trolley guide beam cavity, and the shield frame is fixed to the left end of the trolley guide beam. The trolley guide beam cavity is sleeved on the driven wheel at the rear, and the middle part of the transmission belt is connected with the upper part of the tool carrier trolley body.

In a more specific embodiment of the present invention, the driving pulley and the driven pulley are pulleys, the transmission belt is a belt, and the driving motor of the trolley body is a motor with a forward and reverse rotation function.

In a further specific embodiment of the present invention, the pulley is a synchronous pulley, and the belt is a synchronous belt.

In yet another specific embodiment of the present utility model, the cloth cutting mechanism includes a circular blade driving reduction box fixing frame, a circular blade driving motor, a circular blade driving reduction box, a circular blade and a fixed blade, and the circular blade driving deceleration The box fixing frame is fixed with the lower part of the trolley body of the tool rest, the circular blade driving motor is matched with the circular blade driving reduction box and is fixed by the circular blade driving reduction box together with the circular blade driving motor and the circular blade driving reduction box fixing frame. It is fixed with the power output shaft of the round blade drive reducer of the round blade drive reducer, the fixed blade is fixed with the round blade drive reducer fixing frame at the position corresponding to the rear side of the round blade, and the fixed blade edge of the fixed blade is the same as the round blade. The edges of the round blades are matched and correspond to the said cloth cutting space.

In a further specific embodiment of the present invention, a knife sharpener is provided on the fixed frame of the circular blade drive reduction box and at a position corresponding to the left side of the circular blade.

The technical solution provided by the utility model is that a cloth support roller is arranged at a position corresponding to the lower part of the spreading mechanism, so the cloth support roller lifts the cloth led out by the cloth guide mechanism to the space corresponding to the cloth cutting for cutting the cloth. The mechanism is cut off, so as to meet the double-control cut-off requirements of the spreader.

Description of drawings

FIG. 1 is a structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of the utility model being arranged on the lifting plate of the lower main body of the spreading machine.

Figure 3 is a schematic diagram of the spreading machine spreading from right to left.

Figure 4 is a schematic diagram of the spreading machine spreading from left to right.

Detailed ways

In order to be able to understand the technical essence and beneficial effects of the present invention more clearly, the applicant will give a detailed description by way of examples below, but the description of the examples is not a limitation to the solution of the present invention, any idea based on the present invention Equivalent transformations made only in form rather than substantive should be regarded as the scope of technical solutions of the present invention.

In the following description, all concepts related to the directionality or orientation of up, down, left, right, front and back are taken as examples of the position state of the picture being described, so it cannot be understood as a reference to the present invention. The special limitation of the technical solution provided by the utility model.

Referring to FIG. 1 and in conjunction with FIG. 2, a hanger 1 is shown, and the hanger 1 is hung on the lifting plate 21 of the lower main body 1 of the spreader shown in FIG. A cloth guide mechanism 3, which is arranged on the aforementioned hanger 1; shows a tool rest trolley 4, which is movably arranged on the aforementioned hanger 1; shows a tool rest trolley Drive mechanism 5, the tool carrier trolley drive mechanism 5 is provided on the aforementioned hanger 1 and connected with the aforementioned tool carrier trolley 4; the cloth cutting mechanism 6 is shown, and the cloth cutting mechanism 6 is provided on the aforementioned tool carrier trolley 4.

As the technical point of the technical solution provided by the present utility model: the structural system of the double-pull cutting device for the front pillow seat also includes a cloth support roller 7, and the cloth support roller 7 is located at the bottom corresponding to the aforementioned cloth guide mechanism 3. The position is set on the aforementioned hanger 1 and the space between the cloth support roller 7 and the cloth guide mechanism 3 constitutes a cloth cutting space 8 for the aforementioned cloth cutting mechanism 5 to cut cloth.

Since the aforementioned cloth support roller 7 has the function of being suspended by the cloth 9 shown in FIG. 1 , the cloth support roller 7 can also be called a cloth suspension roller.

1, the aforementioned hanger 1 includes a trolley guide beam 11, a frame cross beam 12 and a pair of hanging arms 13. The trolley guide beam 11 forms a trolley guide beam cavity 111 that penetrates from the left end of the trolley guide beam 11 to the right end. , the lower parts of the front and rear cavity walls of the trolley guide beam cavity 111 are folded toward each other to form a pair of trolley roller guide rails 112, the space between the pair of trolley roller guide rails 112 is formed as a trolley give-away cavity 1121, and the frame beam 12 is arranged on the trolley In the guide beam cavity 111 , the upper ends of the pair of hanging arms 13 each form a hanging arm upper fixing seat 131 . 11 is fixed, and the lower ends of the pair of hanging arms 13 extend toward the bottom of the trolley guide beam 11 and a hook 132 is formed on the upper part of the rear side of the pair of hanging arms 13. On the lifting plate 21 of the lower main body 2, a fixed blade caving cavity 133 is respectively provided on the front side of the lower end of the pair of hanging arms 13 and at the position corresponding to the aforementioned cloth cutting space 8; the aforementioned cloth guide mechanism 3 is arranged in a pair of Between the hanging arms 13, the aforementioned cloth support roller 7 is fixed between the opposite sides of the lower ends of the pair of hanging arms 13 and corresponds to the front of the aforementioned fixed blade vacancy cavity 133; the aforementioned tool rest trolley 4 together with the aforementioned cloth cutting mechanism 6 and the aforementioned pair of trolley roller guide rails 112 form a rolling pair; the aforementioned tool rest trolley driving mechanism 5 is arranged on the aforementioned trolley guide beam 11 .

1, the aforementioned cloth guide mechanism 3 includes a cloth guide plate fixing beam 31, a cloth guide plate 32, a cloth press plate 33, a cloth press plate lifting drive shaft 34, a drive shaft drive motor 35, and a cloth guide plate fixing beam 31. The upper position corresponding to the rear side of the aforementioned cloth support roller 7 is fixed between the opposite sides of the aforementioned pair of hanging arms 13 , the lower part of the length direction of the cloth guide plate 32 is fixed to the cloth guide plate fixing beam 31 , and the cloth guide plate 32 The upper part in the longitudinal direction of the upper part extends in an inclined state toward the rear and upper part of the clamping plate lifting drive shaft 34. Between the upper ends of the arms 13, the right end of the lifting and lowering drive shaft 34 of the cloth pressing plate extends to the right side of the right hanging arm of the pair of hanging arms 13, and a drive shaft actuating block 341 is fixed. The pressing plate 33 Corresponding to the aforementioned cloth guide plate fixing beam 31 and located above the cloth guide plate 32 , the cloth press plate 33 is connected to the aforementioned cloth press plate lifting drive shaft 34 through the press plate linkage springs 331 distributed at intervals, and the drive shaft drives the motor 35 It is fixed to the right side of the one of the pair of hanging walls 13 located on the right side, and a drive motor shaft (not shown in the figure) of the drive shaft drive motor 35 is provided with an actuator for actuating the drive shaft. The cam of the moving block 341 ; the aforementioned cloth cutting space 8 is formed between the front side 321 of the cloth guide plate of the cloth guide plate 32 and the rear side of the aforementioned cloth support roller 7 .

As shown in FIG. 1 , the upper surface of the cloth guide fixing beam 31 is inclined. Specifically, the cloth guide fixing beam 31 is fixed between the pair of hanging arms 13 in a state inclined from top to bottom. FIG. 1 shows the first fixing screw I3311 of the cloth clamp linkage spring 331 whose upper end is fixed with the cloth clamp lifting drive shaft 34 and the cloth clamp plate linkage whose lower end is fixed with the cloth clamp plate 33 . Reed second screw II3312.

When the drive shaft driving motor 35 is working, the aforementioned cam is driven by the drive motor shaft, and the aforementioned drive shaft actuating block 341 is actuated by the cam, so that the pressing plate lifting drive shaft 34 rotates an angle, at this time, the pressing plate lifts and lowers The drive shaft 34 drives the cloth press plate 33 to lift upward through the cloth press plate linkage spring 331 , the cloth press plate 33 leaves the cloth guide plate 32 , and the cloth 9 is guided downward from the cloth guide plate 32 . Conversely, when the aforementioned cam does not act on the drive shaft actuating block 341, the cloth clamp plate lift drive shaft 34 does not rotate, and the cloth clamp plate 33 is in a state of pressing the cloth 9 between the cloth clamp plate 33 and the cloth guide plate 32. The cloth setting is stopped, and in this state, the cloth cutting mechanism 6 performs cloth cutting.

As a preferred solution, a flexible cloth pressing strip 332 is provided on the side of the cloth pressing plate 33 facing the cloth guide plate 32 , and the flexible pressing cloth strip 332 is a rubber strip or a nylon strip to reflect a good cloth pressing effect.

Continuing with FIG. 1 , the aforementioned tool rest trolley 4 includes a tool rest trolley body 41 and a pair of roller seats 42 . The tool rest trolley body 41 corresponds to the aforementioned trolley cavities 1121 , and a pair of roller seats 42 are fixed on the tool rest trolley. On the upper part of the main body 41, a pair of rollers 421 are rotatably arranged on the pair of roller seats 42, and the pair of rollers 421 and the aforementioned pair of trolley roller guide rails 112 form a rolling pair; The trolley driving mechanism 5 is connected with the upper part of the aforementioned tool carrier trolley body 41 ; the aforementioned cloth cutting mechanism 6 is arranged on the lower portion of the tool carrier trolley body 41 .

Still referring to Fig. 1, the aforementioned tool carrier trolley drive mechanism 5 includes a reduction box fixing frame 51, a trolley body drive reduction box 52, a trolley body drive motor 53, a driving wheel 54, a driven wheel 55, a driven wheel axle seat 56 and a transmission belt 57, deceleration The box fixing frame 51 is fixed with the right end of the aforementioned trolley guide beam 11 by screws. The trolley body drive motor 53 is drivingly matched with the trolley body drive reduction box 52, and the trolley body drives the reduction box 52 together with the trolley body drive motor 53 and the reduction box fixing frame 51. Fixing, the output shaft 521 of the reduction box 52 driven by the trolley body faces forward and corresponds to the right cavity opening of the guide beam cavity 111 of the trolley. The driving wheel 54 is fixed on the output shaft 521 of the reduction box, and the driven wheel 55 passes through the driven wheel shaft. It is fixed on the driven wheel axle seat 56, and the driven wheel axle seat 56 is fixed with the shield frame 561 at the position corresponding to the left cavity opening of the trolley guide beam cavity 111, and the shield frame 561 is connected to the trolley guide beam 11 through screws. The left end of the drive belt 57 is fixed, one end of the drive belt 57 is sleeved on the driving wheel 54, the other end is sleeved on the driven wheel 55 after passing through the aforementioned trolley guide beam cavity 111 and the aforementioned frame guide beam 12, and the middle of the drive belt 57 passes through the drive belt The fixing screw 571 is connected to the upper part of the aforementioned tool rest carriage body 41 .

In this embodiment, the aforementioned driving pulley 54 and the driven pulley 55 are pulleys, the aforementioned transmission belt 57 is a belt, the aforementioned trolley body drive motor 53 is a motor with a forward and reverse rotation function; the aforementioned pulley is a synchronous pulley, and the aforementioned The belt is a timing belt.

When the trolley body drive motor 53 works, it drives the trolley body to drive the reduction box 52, the output shaft 521 of the reduction box for the trolley body to drive the reduction box 52 drives the driving wheel 54, the driving wheel 54 drives the transmission belt 57, and the transmission belt 57 drives the aforementioned The trolley body 41 of the tool rest is driven by the trolley body 41 of the tool rest to drive the cloth cutting mechanism 6 to be described below. Since the trolley body driving motor 53 is a motor with a forward and reverse rotation function, the tool rest trolley body 41 can reciprocate left and right.

Continue to see Fig. 1, the aforementioned cloth cutting mechanism 6 comprises a circular blade drive reduction box fixing frame 61, a circular blade driving motor 62, a circular blade driving reduction box 63, a circular blade 64 and a fixed blade 65. The circular blade driving reduction box fixing frame 61 and The lower part of the aforementioned tool rest trolley body 41 is fixed, the circular blade drive motor 62 is driven and matched with the circular blade drive reduction box 63 and is fixed by the circular blade drive reduction box 63 together with the circular blade drive motor 62 and the circular blade drive reduction box fixing frame 61. The blade 64 is fixed with the circular blade driving reduction box power output shaft 631 of the circular blade driving reduction box 63 , and the stationary blade 65 is fixed with the circular blade driving reduction box fixing frame 61 at a position corresponding to the rear side of the circular blade 64 . The stationary blade 65 The fixed blade edge 651 is matched with the circular blade edge of the circular blade 64 and corresponds to the aforementioned cloth cutting space 8 .

Preferably, a knife sharpener 611 is provided on the aforementioned circular blade drive reduction box fixing frame 61 and at a position corresponding to the left side of the aforementioned circular blade 64 . When sharpening the circular blade 64 , just manually press the sharpener 611 , so that the grinding wheel on the sharpening stand 611 contacts the circular blade edge of the circular blade 64 , and the circular blade 64 rotates to achieve sharpening.

In the aforementioned structural system of the cloth cutting mechanism 6, the circular blade drive reduction box 63 can be omitted, and the circular blade 64 can be directly fixed on the circular blade driving motor shaft of the circular blade driving motor 62, and the circular blade driving motor 62 is driven by the motor 62. The seat is on the motor seat fixing frame evolved from the round blade drive reduction box fixing frame 61.

When the cloth 9 is to be cut, then the trolley body 41 and the cloth cutting mechanism 6 are moved under the work of the aforementioned trolley body drive motor 53, and the circular blade drive motor 62 works to drive the circular blade drive reduction box 63. The circular blade drives the reduction box power output shaft 631 to rotate the circular blade 64 fixed thereon. Under the cooperation of the fixed blade 65, the cloth 9 is cut by the cooperation of the circular blade blade and the fixed blade blade 651.

Please refer to FIG. 2 . FIG. 2 shows the lower main machine 2 of the spreading machine set on the spreading table 10 and the lifting plate 21 located on the right side of the lower main machine 2 . The lifting plate 21 is provided with a lifting plate hanging column 211 , the hooks 132 of the aforementioned pair of hanging arms 13 are hung on the hanging column 211 .

Please refer to FIG. 3 , the cloth 9 drawn from the cloth roll shown in FIG. 2 is guided to the cloth guide plate 32 by the spreading mechanism, and the spreading machine spreads the cloth from right to left. During the process, the cloth 9 can always correspond between the circular blade 64 and the fixed blade 65, so the cloth support roller 7 does not work. After the cloth is cut by the cloth cutting mechanism 6, the spreader moves a distance to the left to make the broken cloth fall naturally, and then the spreader returns to the set position to start laying the cloth and align it with the layered cloth. For the convenience of explanation, the applicant shows the trajectory line 911 where the cut cloth 91 falls and the spreader lays a new layer of cloth 92 to the right in FIG. 3 .

Please refer to FIG. 4 , the spreading machine spreads from left to right, and the spreading state is reverse spreading. During the reverse spreading process, the aforementioned support roller 7 works, specifically: the spreading machine reaches the predetermined level from left to right. Position, the cloth 9 is blocked by the cloth support roller 7, and the cloth cutting mechanism 6 cuts the cloth. After the cloth cutting is completed, the cloth spreader continues to move to the right for a certain distance, so that the cloth falls flat on the layer cloth, and the cloth spreader moves in the reverse direction to the predetermined position. Position, place the cloth, and after the cloth is aligned with the layer cloth, the spreader moves to the left and enters the normal laying state. In the same way, in FIG. 4 , the applicant shows the trajectory line 911 where the cut cloth 91 falls and the spreader lays a new layer of cloth 92 to the left.

To sum up, the technical solution provided by the present invention makes up for the shortcomings in the prior art, successfully completes the invention task, and faithfully fulfills the technical effect stated by the applicant in the above technical effect column.

Claims (10)

1. A double-pulling and cutting device for a spreader, comprising a hanger (1), which hangs on a lift plate (21) of a lower main machine (2) of the spreader when in use A cloth guide mechanism (3), the cloth guide mechanism (3) is arranged on the hanger (1); On the frame (1); a tool rest trolley drive mechanism (5), the tool rest trolley drive mechanism (5) is arranged on the hanger (1) and connected with the tool rest trolley (4); (6), the cloth cutting mechanism (6) is arranged on the tool rest trolley (4), and is characterized in that it further comprises a cloth support roller (7), the cloth support roller (7) is corresponding to the cloth guide The position below the mechanism (3) is set on the hanger (1), and the space between the cloth support roller (7) and the cloth guide mechanism (3) is configured for the cloth cutting mechanism (6) to cut Cloth cutting space (8). 2. The double-pulling and cutting-off device of a cloth spreading machine according to claim 1, characterized in that the hanger (1) comprises a trolley guide beam (11), a frame beam (12) and a pair of hanging arms ( 13), the trolley guide beam (11) constitutes a trolley guide beam cavity (111) that penetrates from the left end to the right end of the trolley guide beam (11), and the lower parts of the front and rear cavity walls of the trolley guide beam cavity (111) are folded toward each other and extended. A pair of trolley roller guide rails (112) are formed, and the space between the pair of trolley roller guide rails (112) is formed as a trolley relinquishment cavity (1121), and the frame beam (12) is arranged in the trolley guide beam cavity (111). The upper ends of the hanging arms (13) are each formed with a hanging arm upper fixing seat (131), and the hanging arm upper fixing seat (131) is fixed to the trolley guide beam (11) at a position corresponding to the upper part of the trolley guide beam (11). , and the lower ends of the pair of hanging arms (13) extend toward the bottom of the trolley guide beam (11) and a hook (132) is formed on the upper part of the rear side of the pair of hanging arms (13). The hooks (132) are hung on the lifting plate (21) of the lower main unit (2), and are respectively provided on the front sides of the lower ends of the pair of hanging arms (13) and at positions corresponding to the cloth cutting spaces (8). There is a space (133) for a fixed blade; the cloth guide mechanism (3) is arranged between a pair of hanging arms (13), and the cloth support roller (7) is fixed on the pair of hanging arms (13). between the opposite sides of the lower ends and corresponding to the front of the fixed blade accommodating cavity (133); the tool rest trolley (4) together with the cloth cutting mechanism (6) and the pair of trolley roller guide rails ( 112) Constitute a rolling pair; the tool carrier trolley driving mechanism (5) is arranged on the trolley guide beam (11). 3. The double-pulling and cutting device of a cloth spreading machine according to claim 2, characterized in that the cloth guide mechanism (3) comprises a cloth guide plate fixing beam (31), a cloth guide plate (32), a cloth pressing plate (33), the cloth clamping plate lifting drive shaft (34), the drive shaft drive motor (35), and the cloth guide plate fixing beam (31) are fixed on the upper side corresponding to the rear side of the cloth support roller (7). Between the opposite sides of the pair of hanging arms (13), the lower part in the longitudinal direction of the cloth guide plate (32) is fixed to the cloth guide plate fixing beam (31), and the upper part in the longitudinal direction of the cloth guide plate (32) is inclined The state extends toward the rear and upper side of the cloth clamping plate lifting and lowering drive shaft (34), and the cloth clamping plate lifting and lowering drive shaft (34) is rotatably arranged on the pair of hanging plates at a position corresponding to the front side of the cloth guide plate (32). Between the upper ends of the arms (13), the right end of the lifting and lowering drive shaft (34) of the cloth pressing plate extends to the right side of one of the pair of hanging arms (13) located on the right, and a drive shaft actuating block is fixed. (341), the cloth clamp plate (33) corresponds to the cloth guide plate fixing beam (31) and is located above the cloth guide plate (32), and the cloth clamp plate (33) is linked to the springs ( 331) is connected to the lifting and lowering drive shaft (34) of the cloth clamp, and the drive shaft drive motor (35) is fixed to the right side of the one of the pair of hanging arms (13) located on the right and is fixed on the right side of the hanging arm (13). The drive motor shaft of the drive shaft drive motor (35) is provided with a cam for actuating the drive shaft actuating block (341); the cloth cutting space (8) is formed by the cloth guide of the cloth guide plate (32). between the front side (321) of the plate and the rear side of the backing roller (7). 4. The double-pull cutting device of a cloth spreading machine according to claim 3, characterized in that a compliant cloth pressing strip (332) is provided on the side of the cloth pressing plate (33) facing the cloth guide plate (32). ), the flexible pressing cloth strip (332) is a rubber strip or a nylon strip. 5. The double-pull cutting device of a cloth spreading machine according to claim 2, characterized in that the tool rest trolley (4) comprises a tool rest trolley body (41) and a pair of roller seats (42), the tool rest trolley The main body (41) corresponds to the trolley relinquishment cavity (1121), a pair of roller seats (42) are fixed on the upper part of the tool carrier trolley body (41), and are respectively rotatably arranged on the pair of roller seats (42). There is a pair of rollers (421), and the pair of rollers (421) and the pair of trolley roller guide rails (112) form a rolling pair; the tool rest trolley drive mechanism (5) arranged on the trolley guide beam (11) ) is connected with the upper part of the tool rest trolley body (41); the cloth cutting mechanism (6) is arranged on the lower part of the tool rest trolley body (41). 6. The double-pull cutting device of a spreader according to claim 5, characterized in that the trolley driving mechanism (5) for the tool rest comprises a reduction box fixing frame (51), a trolley body driving a reduction box (52), a trolley The main body drive motor (53), the driving wheel (54), the driven wheel (55), the driven wheel axle seat (56) and the transmission belt (57), the reduction box fixing frame (51) and the right end of the trolley guide beam (11) Fixed, the trolley body drive motor (53) and the trolley body drive reduction box (52) are in driving cooperation and are fixed by the trolley body drive reduction box (52) together with the trolley body drive motor (53) and the reduction box fixing frame (51), the trolley body The output shaft (521) of the reduction box for driving the reduction box (52) faces forward and corresponds to the right cavity opening of the guide beam cavity (111) of the trolley, and the driving wheel (54) is fixed on the output shaft (521) of the reduction box, The driven wheel (55) is fixed on the driven wheel axle seat (56) through the driven wheel axle, and the driven wheel axle seat (56) is in the position corresponding to the left cavity opening of the trolley guide beam cavity (111) and the shield frame ( 561) is fixed, and the shield frame (561) is fixed with the left end of the trolley guide beam (11). 111) The rear is sleeved on the driven wheel (55) and the middle part of the transmission belt (57) is connected with the upper part of the tool rest trolley body (41). 7. The double-pulling and cutting-off device of a spreader according to claim 6, characterized in that the driving pulley (54) and the driven pulley (55) are pulleys, the transmission belt (57) is a belt, and the The trolley body drive motor (53) is a motor with a forward and reverse rotation function. 8 . The double-pull and cutting device of a spreader according to claim 7 , wherein the pulley is a synchronous pulley, and the belt is a synchronous belt. 9 . 9. The double-pulling and cutting-off device of a cloth spreading machine according to claim 5, characterized in that the cloth cutting mechanism (6) comprises a circular blade driving reduction box fixing frame (61), a circular blade driving motor (62), a circular blade driving motor (62), a circular blade driving motor (62), a circular blade driving The blade drive reduction box (63), the circular blade (64) and the fixed blade (65), the circular blade driving reduction box fixing frame (61) is fixed with the lower part of the tool rest trolley body (41), the circular blade driving motor (62) ) is matched with the circular blade drive reduction box (63) and is fixed by the circular blade driving reduction box (63) together with the circular blade driving motor (62) and the circular blade driving reduction box fixing frame (61). The circular blade driving reduction box power output shaft (631) of the blade driving reduction box (63) is fixed, and the stationary blade (65) is connected to the circular blade driving reduction box fixing frame (61) at a position corresponding to the rear side of the circular blade (64). Fixed, the fixed blade edge (651) of the fixed blade (65) is matched with the circular blade edge of the circular blade (64) and corresponds to the cloth cutting space (8). 10. The double-pull cutting device of a spreader according to claim 9, characterized in that it is on the circular blade drive reduction box fixing frame (61) and on the left side corresponding to the circular blade (64) The position is provided with a sharpener (611).

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