CN114834948A - Carbon fiber widening wire cutting equipment - Google Patents

Abstract

The invention provides a carbon fiber widening wire cutting equipment, which solves the problem that the existing automatic cutting equipment is difficult to keep the ribbon-like raw materials in a tensioned and straight state, which is not conducive to the cutting work. In the invention, the pressure sensor is used to monitor the tension force of the carbon fiber stretching wire, and the pressure sensor is integrated into the guide roller mechanism, so that the space structure of the device is greatly simplified, the distance between the guide roller mechanism and the cutting mechanism is greatly shortened, and the The tension time of the carbon fiber stretched yarn before cutting is determined. Moreover, the cooperation of the pressure sensor and the controller can dynamically adjust the speed difference between the first servo motor and the traction drive in real time, so that the tensile strength of the carbon fiber stretched wire can always be kept constant, and the material properties of the cut carbon fiber stretched wire can be affected by long The influence of time stretching is greatly reduced, and the quality and performance of the carbon fiber stretched yarn after cutting is improved.

Description

A kind of carbon fiber spread wire cutting equipment

technical field

The invention relates to the field of carbon fiber widening wire cutting equipment, in particular to a carbon fiber widening wire cutting device.

Background technique

In the field of carbon fiber stretching wire processing, chopped carbon fiber stretching wire is used to combine with corresponding resin to prepare corresponding chopped sheet. To make the surface layer of luggage, sports equipment, automobiles and other parts.

Usually this kind of carbon fiber stretching wire is manually cut to the corresponding length. This method of cutting has low efficiency and high technical requirements for workers. Moreover, when the workers cut the stretching wire, due to the limitations of the process conditions, the hands and the The distance between the cutters is relatively short, which is prone to safety accidents.

Therefore, it is necessary to design an automatic cutting equipment to replace the automatic cutting of the ribbon-like material such as carbon fiber stretched silk. The current cutting equipment only has a wire feeding system, a pulling system, and a cutting system. When in use, it is difficult to adjust the ribbon in real time. Due to the tensile strength of the raw materials, only relying on the traction system to pull the ribbon-like materials forward will make it difficult for the ribbon-like materials to maintain a tension and straight state during the movement process, which is not conducive to the cutting work.

SUMMARY OF THE INVENTION

In order to solve the problem that the existing automatic cutting equipment in the background technology is difficult to keep the raw materials of the ribbon in a tensioned and straight state, which is not conducive to the cutting work, the present invention proposes a carbon fiber widening Wire cutting equipment.

The technical scheme of the present invention is: a carbon fiber widening wire cutting equipment, comprising a frame, the top of the frame is fixedly provided with a horizontally arranged large installation plate, and the installation large plate is fixed with a vertically arranged discharge end bracket, Traction end bracket, the traction end bracket is located on the right side of the discharge end bracket;

A first servo motor and a guide roller mechanism are fixed on the discharge end bracket, and a carbon fiber raw silk material disc is arranged on the output shaft of the first servo motor, and the carbon fiber raw silk material disc is coiled with carbon fiber stretching wires;

The guide roller mechanism includes a plurality of left and right spaced guide rollers and at least one tension roller. The tension roller is located between the left and right spaced guide rollers. The tension roller is provided with a pressure sensor. The pressure sensor is used to detect the tension of the carbon fiber stretching wire. pressure exerted by the roller;

The traction end bracket is provided with a traction paired roller mechanism and a traction drive mechanism used to drive the traction paired roller mechanism to rotate, and the traction drive mechanism is drive-connected with the traction paired roller mechanism;

A cutting mechanism is also fixed on the traction end bracket, and the cutting mechanism is located on the right side of the traction pairing roller mechanism;

The carbon fiber stretched filaments pass through the first guide roller, the tension roller and the second guide roller in turn in a zigzag shape, and then pass through the traction paired roller mechanism;

The first servo motor, the annular pressure sensor, the traction drive mechanism and the cutting mechanism are respectively connected to the controller for control, and the pressure sensor and the controller cooperate to adjust the speed difference between the first servo motor and the traction drive machine.

Preferably, the traction end bracket is provided with a vertically arranged telescopic mechanism with adjustable upper and lower lengths, and the movable end of the telescopic mechanism is fixedly connected to the traction drive mechanism;

The traction roller mechanism includes a traction roller and a driven roller. The mandrel of the traction roller is fixedly connected to the output shaft of the traction drive mechanism. The mandrel of the driven roller is vertically and fixedly connected to the traction end bracket. The driven roller is located directly below the traction roller. ;

The telescopic mechanism is used to adjust the thickness of the gap between the traction roller and the driven roller.

Preferably, the traction end bracket is fixedly provided with a second guide groove plate, and the upper part of the second guide groove plate is provided with a second guide groove that is transparent from left to right and has an upper opening, and the second guide groove plate is located in the traction roller mechanism and the cutting mechanism. between;

The carbon fiber stretched wire between the pulling pair roller mechanism and the cutting mechanism slides through the second guide groove in a horizontal state, and the bottom of the carbon fiber stretched wire in the second guide groove is in sliding contact with the groove bottom in the second guide groove.

Preferably, the guide roller mechanism includes a vertically arranged guide roller mounting plate, the guide roller mounting plate is detachably and fixedly connected to the discharge end bracket, and the guide roller mounting plate is sequentially provided with a first guide extending in the front-rear direction from left to right roller, tension roller and second guide roller;

The pressure sensor set on the tension roller is a ring pressure sensor, the shape pressure sensor is fixedly sleeved on the mandrel of the tension roller, and the ring pressure sensor is fixed on the guide roller mounting plate;

The mandrels of the first guide roller and the second guide roller are both vertically and fixedly connected with the guide roller mounting plate, the first guide roller and the second guide roller are arranged in a dislocation position from the tension roller, and the first guide roller and the second guide roller are Below the tension roller.

Preferably, a guide groove support extending to the left is fixed on the traction end support, a first guide groove plate is fixed on the top of the guide groove support, and the upper part of the first guide groove plate is provided with an upper opening and left and right transparent a guide groove;

The first guide groove plate is located between the guide roller mechanism and the traction paired roller mechanism, and the carbon fiber broadening wire between the guide roller mechanism and the traction paired roller mechanism slides through the first guide groove plate.

Preferably, both the first guide roller and the second guide roller are located below the tension roller;

The top of the left end of the first guide groove plate is provided with an arc-shaped chamfer extending from the right and bottom to the top. The expanded carbon fibers of the second guide roller can directly enter the first guide groove.

Preferably, the bottom of the carbon fiber broadening wire in the first guide groove is in sliding contact with the groove bottom of the first guide groove.

Preferably, the guide roller mounting plate is provided with a waist-shaped hole extending in the up-down direction, and the waist-shaped hole is provided with fastening bolts for fixing the guide roller mounting plate on the discharge end bracket, and the waist-shaped hole is connected with the fastening bolts. The bolts are used to adjust the upper and lower heights of the guide roller mounting plate.

Preferably, the output shaft of the first servo motor is fixedly connected with the rear end of the inflatable shaft, and the carbon fiber raw material disc is sleeved on the inflatable shaft.

Preferably, a tray is fixed on the traction end bracket, a collecting device is placed on the tray, the collecting device is a box structure with an upper opening, and the collecting device is located directly below the cutting mechanism.

The advantages of the present invention: the device uses a pressure sensor to monitor the tension force of the carbon fiber stretching wire, and integrates the pressure sensor into the guide roller mechanism, so that the space structure of the device can be greatly simplified, and the space occupied is smaller. The distance between the cutting mechanisms can be greatly shortened, reducing the length of tension of the carbon fiber spreader before cutting.

Moreover, the cooperation of the pressure sensor and the controller can dynamically adjust the speed difference between the first servo motor and the traction drive in real time, so that the tensile strength of the carbon fiber stretched wire can always be kept constant, so that the material properties of the cut carbon fiber stretched wire can be affected by long-term effects. The influence of time stretching is greatly reduced, and the quality performance of the carbon fiber stretched yarn after cutting is improved.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the three-dimensional structure schematic diagram of the main viewing angle of embodiment 1;

Fig. 2 is the three-dimensional structure schematic diagram of the rear view angle of Fig. 1;

Fig. 3 is the structural representation of the bottom view angle of the cutter mechanism in Fig. 1;

Fig. 4 is the structural representation of the upper cutter and the lower cutter in Fig. 3;

In the figure, 1. Rack, 2. Mounting large plate, 3. Unwinding mounting seat, 4. Air expansion shaft, 5. Carbon fiber raw material tray, 6. Servo motor mounting seat, 7. First servo motor, 8 , Guide roller mounting plate, 9, First guide roller, 10, Tension roller, 11, Second guide roller, 12, First guide groove plate, 13, First three-axis cylinder, 14, Servo motor mounting plate, 15, The second three-axis cylinder, 16, the traction roller, 17, the driven roller, 18, the second guide groove plate, 19, the three-axis cylinder mounting plate, 20, the upper cutter mounting seat, 21, the upper cutter, 2101, the upper Cutter base plate, 2102, Upper blade, 22, Lower cutter base, 2201, Lower cutter base plate, 2202, Lower blade, 23, Carbon fiber spreading wire, 24, Motor mounting plate, 25, Guide roller fixing plate, 26, Mounting support, 27. The second servo motor, 28, the square pass bracket, 29, the tray, 30, the collecting device.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Embodiment 1: A carbon fiber widening wire cutting equipment, as shown in Figure 1, includes a frame 1, the top of the frame 1 is fixed with a horizontally arranged installation large plate 2, and a vertical installation plate 2 is fixed on the large plate 2. Discharge end bracket and traction end bracket are provided, and the traction end bracket is located on the right side of the discharge end bracket.

The discharge end bracket includes a wire pay-off mounting seat 3 and a servo motor mounting seat 6 arranged vertically as shown in Figures 1 and 2 .

The wire feeding mounting seat 3 is of L-shaped plate structure, the bottom of the wire feeding mounting seat 3 is connected with the large mounting plate 2 by bolts, and the vertical plate of the wire feeding seat 3 is provided with front and rear transparent slots.

The servo motor mounting seat 6 is fixed on the rear side of the vertical plate of the wire unwinding mounting seat 3 by bolts, and a first servo motor 7 is fixed on the servo motor mounting seat 6, and the front end of the output shaft of the first servo motor 7 passes through the groove hole, and the front end of the output shaft of the first servo motor 7 is connected with the mandrel of the air expansion shaft 4 through the coupling, and the air expansion shaft 4 is provided with a carbon fiber raw silk material disc 5, and the carbon fiber raw silk material disc 5 is coiled with Carbon fiber spreading wire 23.

The size of the tension force between it and the carbon fiber raw material tray 5 can be quickly adjusted through the air expansion shaft, so as to achieve rapid fixing and disassembly of the carbon fiber raw material tray 5 .

A guide roller mounting plate 8 of a guide roller mechanism that is vertically arranged and extends to the right is provided on the vertical plate of the wire-feeding mounting base 3 . As shown in Figure 2, the guide roller mounting plate 8 is provided with a waist-shaped hole extending in the up-down direction, and the waist-shaped hole is provided with fastening bolts for fixing the guide roller mounting plate 8 on the discharge end bracket. The shaped holes and the fastening bolts are used to adjust the upper and lower heights of the guide roller mounting plate 8 , so as to adjust the size of the wrapping angle of the carbon fiber spreading wire 23 entering the guide roller 9 .

As shown in FIG. 1 , the guide roller mechanism further includes a first guide roller 9 , a tension roller 10 and a second guide roller 11 which are sequentially arranged on the guide roller mounting plate 8 from left to right.

As shown in FIG. 1 , a ring pressure sensor is fixedly sleeved on the mandrel of the tension roller 10, and the ring pressure sensor is fixed on the guide roller mounting plate 8; the mandrels of the first guide roller 9 and the second guide roller 11 are The guide roller mounting plate 8 is vertically and fixedly connected, the first guide roller 9 and the second guide roller 11 are arranged in a vertical dislocation with the tension roller 10 , and the first guide roller 9 and the second guide roller 11 are located below the tension roller 10 .

The first servo motor 7 and the annular pressure sensor are both controlled and connected to the controller (the controllers in this embodiment are all PLC controllers that can be programmed).

The traction end bracket is provided with a traction pairing roller mechanism and a traction driving mechanism for driving the traction pairing roller mechanism to rotate, and the traction driving mechanism is drivingly connected with the traction pairing roller mechanism.

Specifically, as shown in FIG. 1 , the traction end bracket includes a vertically arranged square-pass bracket 28 , the square-pass bracket 28 is two vertical frame structures arranged at left and right intervals, and the top of the square-pass bracket 28 is fixed by bolts with horizontally arranged The front side of the mounting support 26 is fixed with a motor mounting plate 24 having a T-shaped plate structure through bolts.

The motor mounting plate 24 is provided with an adjustment slot and a shaft slot extending in the up-down direction and transparent to the front and rear.

The rear part of the motor mounting plate 24 is provided with a traction drive mechanism. The traction drive mechanism in this embodiment adopts the second servo motor 27 as shown in FIG. 2 . 27 bolts. The output shaft of the second servo motor 27 slides up and down and passes through the shaft groove.

The front end of the output shaft of the second servo motor 27 is connected to the rear end of the mandrel of the pulling roller 16 through a coupling.

A driven roller 17 is provided just below the pulling roller 16 , and the rear end of the mandrel of the driven roller 17 is fixedly connected to the lower part of the motor mounting plate 24 .

The pulling roller 16 and the driven roller 17 cooperate with each other and are driven by the second servo motor 27 to pull the carbon fiber stretching filaments 23 .

The motor mounting plate 24 is provided with a vertically arranged telescopic mechanism with adjustable upper and lower lengths. The telescopic mechanism is used to adjust the thickness of the gap between the traction roller 16 and the driven roller 17 . The telescopic mechanism in this embodiment adopts the first three-axis cylinder 13 as shown in FIG. 1 and FIG. 2 , the first three-axis cylinder 13 is a stroke-adjustable cylinder, and the cylinder body of the first three-axis cylinder 13 is connected to the cylinder through bolts. The upper part of the motor mounting plate 24 is fixedly connected.

A bearing is fixedly connected to the lower end of the first three-axis cylinder 13 , and the bearing is sleeved on the output shaft of the second servo motor 27 . The first three-axis cylinder 13 is controlled and connected to the controller.

The right side of the motor mounting plate 24 is fixedly provided with a cutting mechanism, and the cutting mechanism is located on the right side of the traction paired roller mechanism.

As shown in FIG. 1 and FIG. 3 , the cutting mechanism includes two three-axis cylinder mounting plates 19 that are vertically fixed on the right side of the motor mounting plate 24 and arranged at intervals in the front and rear. The right side of the three-axis cylinder mounting plate 19 is fixed with There is a second three-axis cylinder 15 , the lower end of the second three-axis cylinder 15 is fixedly provided with an upper cutter mounting seat 20 , and the bottom of the upper cutter mounting seat 20 is fixedly provided with an upper cutter 21 .

As shown in FIG. 4 , the upper cutter 21 includes an upper cutter base plate 2101 with an L-shaped plate structure, an upper blade 2102 is fixedly arranged on the left side of the upper cutter base plate 2101 , and the lower end of the upper blade 2102 is provided with a direction from right to left, from right to left. Slanted blade set with a downward and upward slope.

The upper cutter base plate 2101 is fixed to the bottom of the upper cutter mounting seat 20 by bolts.

The cutting mechanism also includes a lower cutter 22. As shown in FIG. 4, the lower cutter 22 includes a lower cutter base plate 2201 with a flat plate structure and a lower blade 2202 fixed on the right end of the lower cutter base plate 2201. Left, slanted blade set sloping from top to bottom.

The lower cutter base plate 2201 is fixed on the bottom of the second guide slot plate 18 , the lower blade 2202 is located on the right side of the second guide slot plate 18 , and the lower blade 2202 and the upper blade 2102 are corresponding up and down.

The upper part of the second guide groove plate 18 is provided with a second guide groove that is transparent to the left and right and has an upper opening, and the second guide groove plate 18 is located between the pulling pair roller mechanism and the cutting mechanism.

The carbon fiber stretching wire 23 between the pulling pair roller mechanism and the cutting mechanism slides through the second guide groove in a horizontal state, and the bottom of the carbon fiber stretching wire 23 in the second guiding groove is in sliding contact with the groove bottom in the second guiding groove.

In order to guide and adjust the motion state of the carbon fiber stretching wire 23 between the guide roller mechanism and the traction roller mechanism, as shown in FIG. 1 , the left side of the motor mounting plate 24 is fixed with a guide groove bracket extending to the left, The top of the guide groove bracket is fixedly provided with a first guide groove plate 12, and the upper part of the first guide groove plate 12 is provided with a first guide groove with an upper opening and left and right transparent.

The first guide groove plate 12 is located between the guide roller mechanism and the traction paired roller mechanism, and the carbon fiber spreading wire 23 between the guide roller mechanism and the traction paired roller mechanism slides through the first guide groove plate 12 .

The top of the left end of the first guide groove plate 12 is provided with an arc-shaped chamfer extending from the right and bottom to the top. The arc-shaped chamfer at the left end of the first guide groove plate 12 abuts against the bottom of the second guide roller 11 to The carbon fiber widening filaments 23 bypassing the second guide roller 11 can directly enter the first guide groove.

The bottom of the carbon fiber spreading wire 23 in the first guide groove is in sliding contact with the groove bottom of the first guide groove.

The square pass bracket 28 is placed on the tray 29 . In order to make the upper and lower heights of the tray 29 adjustable, the square through bracket 28 in this embodiment is provided with a tray adjustment hole that is transparent to the front and rear and extends in the up and down direction. The bolts are used to fix the tray 29 on the square pass bracket 28 .

The height adjustment of the tray 29 is realized by adjusting the upper and lower positions of the tray fastening bolts in the tray adjustment holes.

A collecting device 30 is placed on the tray 29, the collecting device 30 is a box structure with an upper opening, and the collecting device 30 is located directly below the cutting mechanism. The collecting device 30 is used to collect the expanded carbon fiber filaments 23 cut by the cutting mechanism.

The carbon fiber stretched filaments 23 pass through the first guide roller 9, the tension roller 10 and the second guide roller 11 in turn in a zigzag shape, and then pass through the traction paired roller mechanism.

The traction drive mechanism and the cutting mechanism are respectively connected to the controller for control, and the annular pressure sensor and the controller cooperate to adjust the speed difference between the first servo motor 7 and the second servo motor 27, so as to make the carbon fiber raw material disc 5 and the traction pair of rollers The carbon fiber stretching wire 23 between the mechanisms can always be in a state of tension and straightness, so as to achieve the purpose of constant tension of the carbon fiber stretching wire 23, so as to avoid the bending and falling off of the carbon fiber stretching wire 23 during the movement process, which is not conducive to cutting. Work progress and shape yield control after cutting.

Principle of use: When working, first power on each servo motor and cylinder to reset to the neutral position.

Then, the expanded carbon fiber raw material disc 5 is placed on the corresponding position of the air expansion shaft 4, and the air expansion shaft 4 is ventilated and tightened, so that the carbon fiber raw silk material disc 5 is quickly fixed on the air expansion shaft 4.

Then, the carbon fiber widening filaments 23 are passed through the guide roller 9 , the tension roller 10 , and the guide roller 11 in order from left to right in an S-shape.

Then, the carbon fiber stretching wires 23 are passed through the corresponding first guide grooves of the first guide groove plate 12 .

Then, after reset, the second three-axis cylinder 15 makes the driven servo motor 27 in a retracted state, and passes the carbon fiber stretching wire 23 passing through the first guide groove through the gap between the pulling roller 16 and the driven roller 17 .

Then, the carbon fiber stretching filaments 23 passing through the middle of the traction roller 16 and the driven roller 17 are passed through the second guide groove of the second guide groove plate 18 and between the upper cutter 21 and the lower cutter 22 in turn. At this time, the second and third The shaft cylinder 15 drives the upper cutter 21 to be in a retracted state to complete the preparation for threading.

Then, the first three-axis air cylinder 13 is ventilated and pressed down, so that the traction roller 16 and the driven roller 17 are tightly squeezed, and at the same time, the second servo motor 27 drives the traction roller 16 and the driven roller 17 to rotate, and the traction of the carbon fiber stretching wire 23 is completed. .

Then, the second three-axis air cylinder 15 drives the upper cutter 21 to move downward, and cooperates with the lower cutter 22 to complete the short cutting of the carbon fiber stretching wire 23, and the cut carbon fiber stretching wire 23 falls into the collecting device 30, thereby completing the entire carbon fiber. The short cutting process of the spreading wire 23.

During the whole cutting process, the annular pressure sensor installed on the mandrel of the tension roller 10 monitors the tension force of the carbon fiber stretching wire 23 itself represented by the pressure exerted by the carbon fiber stretching wire 23 on the tension roller 10 in real time. Adjust the speed difference between the first servo motor 7 and the traction drive in real time (if the pressure is too large, adjust the speed of the first servo motor 7 and the second servo motor 27 at the same time to reduce the difference between the first servo motor 7 and the second servo motor 27. The speed difference between the two can balance the tensile strength of the carbon fiber stretching wire 23. On the contrary, if the pressure is too small, the speed of the first servo motor 7 and the second servo motor 27 will be increased at the same time, and the first servo motor 7 and the second servo motor will be increased. The speed difference between the motors 27), so that the carbon fiber stretching wire 23 between the carbon fiber raw wire material disc 5 and the traction roller mechanism can always be in a tensioned and straight state, so as to achieve the purpose of constant tension of the carbon fiber stretching wire 23. The phenomenon of bending and falling off of the carbon fiber widening wire 23 during the movement is avoided, which is not conducive to the cutting work and the control of the shape qualification rate after cutting.

The device uses an annular pressure sensor to monitor the tension of the carbon fiber stretching wire 23, and integrates the annular pressure sensor into the guide roller mechanism, so that the space structure of the device can be greatly simplified and the space occupied is smaller. The guide roller mechanism is integrated into the cutting mechanism The distance between them is greatly shortened, which reduces the tension time of the carbon fiber stretching wire 23 before cutting, and the tensile strength of the carbon fiber stretching wire 23 can always be kept constant, so that the material properties of the cut carbon fiber stretching wire 23 are affected. The influence of long-time tensioning is greatly reduced, and the quality and performance of the carbon fiber stretched filaments 23 after being cut are improved.

Embodiment 2: A carbon fiber stretched wire cutting device. In this embodiment, the first guide roller 9 and the second guide roller 11 are both located above the tension roller 10, and in this embodiment, the first guide groove plate 12 is not. The other structure is the same as that of the first embodiment.

Embodiment 3: A carbon fiber stretched wire cutting device. In this embodiment, the guide roller mechanism includes four guide rollers and two tension rollers 10 arranged at intervals on the left and right, and the two tension rollers 10 are arranged at intervals between the four guide rollers. At the same time, one of the tension rollers 10 is provided with an annular pressure sensor. Other structures are the same as those of Embodiment 1.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the present invention is to be defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the claimed equivalents are embraced within the invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (10)

1. The utility model provides a carbon fiber stretch yarn cutting equipment which characterized in that: the device comprises a rack (1), wherein a horizontally arranged large mounting plate (2) is fixedly arranged at the top of the rack (1), a vertically arranged discharge end support and a traction end support are fixedly arranged on the large mounting plate (2), and the traction end support is positioned on the right side of the discharge end support;

a first servo motor (7) and a guide roller mechanism are fixedly arranged on the discharging end support, a carbon fiber precursor tray (5) is arranged on an output shaft of the first servo motor (7), and a carbon fiber widening yarn (23) is wound in the carbon fiber precursor tray (5);

the guide roller mechanism comprises a plurality of guide rollers arranged at intervals left and right and at least one tension roller (10), the tension roller (10) is positioned between the guide rollers arranged at intervals left and right, a pressure sensor is arranged on the tension roller (10), and the pressure sensor is used for detecting the pressure applied to the tension roller (10) by the carbon fiber widening yarns (23);

the traction end bracket is provided with a traction roller aligning mechanism and a traction driving mechanism for driving the traction roller aligning mechanism to rotate, and the traction driving mechanism is in transmission connection with the traction roller aligning mechanism;

a cutting mechanism is also fixedly arranged on the traction end bracket and is positioned on the right side of the traction roller pair mechanism;

the carbon fiber widening yarn (23) sequentially rounds a first guide roller (9), a tension roller (10) and a second guide roller (11) in a shape of a Chinese character 'ji', and then passes through a traction roll-aligning mechanism;

the first servo motor (7), the annular pressure sensor, the traction driving mechanism and the cutting mechanism are respectively in control connection with the controller, and the pressure sensor is matched with the controller to adjust the rotating speed difference between the first servo motor (7) and the traction driving mechanism.

2. The carbon fiber stretched yarn cutting apparatus according to claim 1, wherein: the traction end bracket is provided with a vertically arranged telescopic mechanism with adjustable vertical length, and the movable end of the telescopic mechanism is fixedly connected with the traction driving mechanism;

the traction roll-aligning mechanism comprises a traction roll (16) and a driven roll (17), a mandrel of the traction roll (16) is fixedly connected with an output shaft of the traction driving mechanism, a mandrel of the driven roll (17) is vertically and fixedly connected with a traction end support, and the driven roll (17) is positioned right below the traction roll (16);

the telescopic mechanism is used for adjusting the thickness of a gap between the traction roller (16) and the driven roller (17).

3. The carbon fiber spread yarn cutting apparatus according to claim 1 or 2, wherein: a second guide groove plate (18) is fixedly arranged on the traction end support, a second guide groove which is through from left to right and is provided with an upper opening is formed in the upper part of the second guide groove plate (18), and the second guide groove plate (18) is positioned between the traction roller aligning mechanism and the cutting mechanism;

the carbon fiber stretching wire (23) between the traction double-roller mechanism and the cutting mechanism slides in a horizontal state to pass through the second guide groove, and the bottom of the carbon fiber stretching wire (23) in the second guide groove is in sliding contact with the groove bottom in the second guide groove.

4. The carbon fiber spread yarn cutting apparatus according to claim 1 or 2, wherein: the guide roller mechanism comprises a guide roller mounting plate (8) which is vertically arranged, the guide roller mounting plate (8) is detachably and fixedly connected with the discharging end support, and a first guide roller (9), a tension roller (10) and a second guide roller (11) which extend along the front-back direction are sequentially arranged on the guide roller mounting plate (8) from left to right;

the pressure sensor arranged on the tension roller (10) is an annular pressure sensor which is fixedly sleeved on a mandrel of the tension roller (10), and the annular pressure sensor is fixedly arranged on the guide roller mounting plate (8);

the mandrels of the first guide roller (9) and the second guide roller (11) are vertically and fixedly connected with the guide roller mounting plate (8), the first guide roller (9) and the second guide roller (11) are vertically arranged in a staggered mode with the tension roller (10), and the first guide roller (9) and the second guide roller (11) are located below the tension roller (10).

5. The carbon fiber spread yarn cutting apparatus according to claim 4, wherein: a guide groove support extending towards the left is fixedly arranged on the traction end support, a first guide groove plate (12) is fixedly arranged at the top of the guide groove support, and a first guide groove with an upper opening and a through left and right is formed in the upper part of the first guide groove plate (12);

the first guide groove plate (12) is positioned between the guide roller mechanism and the traction roller pair mechanism, and the carbon fiber widening yarns (23) between the guide roller mechanism and the traction roller pair mechanism slide through the first guide groove plate (12).

6. The carbon fiber spread yarn cutting apparatus according to claim 5, wherein: the first guide roller (9) and the second guide roller (11) are both positioned below the tension roller (10);

the top of the left end of the first guide groove plate (12) is provided with an arc chamfer extending from the total right and the bottom upwards, and the arc chamfer at the left end of the first guide groove plate (12) abuts against the bottom of the second guide roller (11) so that the carbon fiber widening yarn (23) bypassing the second guide roller (11) can directly enter the first guide groove.

7. The carbon fiber stretched yarn cutting apparatus according to claim 6, wherein: the bottom of the carbon fiber widening yarn (23) in the first guide groove is in sliding contact with the groove bottom of the first guide groove.

8. The carbon fiber spread yarn cutting apparatus as claimed in claim 1, 2, 5, 6 or 7, wherein: waist-shaped holes extending along the vertical direction are formed in the guide roll mounting plates (8), fastening bolts used for fixing the guide roll mounting plates (8) on the discharging end support penetrate through the waist-shaped holes, and the waist-shaped holes are matched with the fastening bolts to adjust the vertical height of the guide roll mounting plates (8).

9. The carbon fiber spread yarn cutting apparatus as claimed in claim 1, 2, 5, 6 or 7, wherein: an output shaft of the first servo motor (7) is fixedly connected with the rear end of the air expansion shaft (4), and the carbon fiber precursor material disc (5) is sleeved on the air expansion shaft (4).

10. The carbon fiber spread yarn cutting apparatus as claimed in claim 1, 2, 5, 6 or 7, wherein: a tray (29) is fixedly arranged on the traction end support, a collecting device (30) is placed on the tray (29), the collecting device (30) is of a box body structure with an upper opening, and the collecting device (30) is located under the cutting mechanism.

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