Strip material cutting device and method suitable for automatic composite material tape laying equipment

Abstract

The invention discloses a strip cutting device suitable for automatic composite strip laying equipment. The strip cutting device comprises a cutting transverse moving base mechanism, a cutting transverse moving supporting plate assembly arranged on the cutting transverse moving base mechanism and a drag chain groove assembly. The cutting transverse moving base mechanism comprises a cutting base supporting frame and a cutter mounting plate which is arranged on one side of the cutting base supporting frame and extends outwards. The cutting transverse moving supporting plate assembly comprises two moving bases arranged on the cutter mounting plate, an ultrasonic cutting mechanism and a cutter adjusting mechanism, wherein the ultrasonic cutting mechanism and the cutter adjusting mechanism are arranged on the moving bases. The two movable bases are located on the two sides of the cutter mounting plate and arranged in a staggered mode with the length direction of the cutter mounting plate as the center line, and the two movable bases are connected end to end through a drag chain groove assembly to form closed-loop movement. The invention further provides a strip cutting method. According to the device provided by the invention, the required strip shape can be cut according to process requirements.

Description

Technical Field

[0001] The invention belongs to the field of composite material processing equipment, and in particular relates to a tape cutting device and method suitable for composite material automatic tape laying equipment. Background Art

[0002] During the tape laying process, the tape cutting device is generally used in conjunction with a detection device. The detection device provides tape position information to the tape cutting device, and the tape cutting device performs cutting operations.

[0003] Existing strip cutting devices usually adopt a straight up and down cutting method. The gap between the outer diameter of the cutter and the inner diameter of the strip base film must be kept small enough. The smaller the gap, the better the cutting effect. Therefore, the higher the strength required during the processing, assembly and debugging process. If the cutter vibrates slightly, it will affect the cutting quality.

[0004] In the existing tape laying head tape cutting device, during the laying process, the movement processes of various actuators have intersections, that is, during the laying process, the movement of each actuator must be carried out in sequence from the beginning to the end, and the operations between the actuators are not linked.

[0005] Patent document CN118596211A discloses a fiber reinforced composite cutting blade, which includes a main tool holder, a cutting assembly is arranged below the main tool holder, two groups of fixing plates are arranged on the main tool holder, and the cutting assembly is clamped between the two groups of fixing plates; the cutting assembly includes two groups of blade bodies, one side of which is provided with a fixing groove, and a cooling pipe is clamped in the fixing groove; a cooling assembly is arranged above the main tool holder, installed on the main tool holder, and connected to the cooling pipe; an assembly frame is arranged on the main tool holder, and the equipment connector is clamped in the assembly frame and further connected by an assembly bolt.

[0006] Patent document CN118404837A discloses a device and a control method capable of accurately controlling the angle of composite material plies. The device comprises a cutting part and an angle control console. The cutting part is arranged above the angle control console so as to be lifted and lowered. The angle control console comprises a console housing, a rotating worktable and a control mechanism. The rotating worktable is rotatably arranged and a 0° marking line is provided on the rotating worktable. The control mechanism comprises a rotating control part and a transmission control part. The rotating worktable can be adjusted at a fixed angle by operating the rotating control part. The composite material prepreg can be transmitted by operating the transmission control part. Summary of the invention

[0007] The object of the present invention is to provide a tape cutting device and method suitable for composite material automatic tape laying equipment, which can cut the required tape shape according to the process requirements.

[0008] In order to achieve the first object of the present invention, the following technical scheme is provided: a tape cutting device suitable for composite material automatic tape laying equipment, comprising a cutting transverse shifting base mechanism, a cutting transverse shifting support plate assembly arranged on the cutting transverse shifting base mechanism, and a drag chain slot assembly;

[0009] The cutting transverse shifting base mechanism comprises a cutting base support frame, and a cutter mounting plate extending outwardly from one side of the cutting base support frame;

[0010] The cutting transverse moving support plate assembly comprises two movable bases arranged on the cutter mounting plate, and an ultrasonic cutting mechanism and a cutter adjustment mechanism arranged on the movable bases;

[0011] The two mobile bases are located on both sides of the cutter mounting plate and are staggered with the length direction of the cutter mounting plate as the center line, and the two mobile bases are connected head to tail through a drag chain slot assembly to form a closed-loop movement.

[0012] The present invention drives the ultrasonic cutting mechanism to move horizontally relative to the transverse base assembly by driving the cutting transverse pallet assembly through a servo motor, and two ultrasonically driven blades with separate linear freedom and rotational freedom respectively cut the prepreg tape before paving into the shape required by the user. In addition, the telescopic cylinder driving assembly, the depth detection assembly and the cutting depth fine-tuning assembly work together, and the cutting depth assembly can be fine-tuned according to the depth information fed back by the depth detection assembly to achieve adjustable cutting depth.

[0013] Specifically, the cutting transverse shift base mechanism also includes a cutting transverse drive assembly that drives the cutting transverse shift support plate assembly to move transversely along the cutter mounting plate.

[0014] Specifically, the cutting transverse drive assembly includes a cutting transverse drive motor, a coupling, a precision locking nut, a bearing seat, a bearing end cover, a cutting transverse drive screw, a transverse tail bearing seat, a cutting transverse shift block and a screw tail end cover.

[0015] Specifically, the ultrasonic cutting mechanism includes an ultrasonic cutting mechanism mounting seat, an ultrasonic cutting drive motor, a bearing end cover, a drive worm, a bearing, a cutting knife, a drive turbine, a transducer drive shaft and a transducer connecting rod.

[0016] Specifically, the cutter adjustment mechanism includes a telescopic cylinder drive assembly, a cutting depth fine-tuning assembly, a depth detection assembly and a hydraulic buffer assembly arranged on a movable base.

[0017] Specifically, the telescopic cylinder drive assembly includes: an air pipe joint, an elliptical cylinder, a cylinder mounting bracket, a cylinder connecting plate and a cylinder tail bracket, wherein the cylinder tail bracket is fixedly installed on a mobile base, the cylinder connecting plate is fixedly installed above the cylinder tail bracket, the cylinder mounting bracket is fixedly installed between the cylinder connecting plates, the elliptical cylinder is fixedly installed inside the cylinder mounting bracket, and the air pipe joint is fixedly installed on the cylinder mounting bracket.

[0018] Specifically, the cutting depth fine-tuning assembly includes: an end adjustment knob, a guide clamping seat, an adjustment screw, a guide refined external threaded step pin, a guide copper sleeve, a handle screw, a guide light rod and a rod end limit bumper, wherein the guide clamping seat is fixedly mounted on a movable base, the guide copper sleeve and the guide clamping seat are transitionally matched, the guide light rod and the guide copper sleeve are clearance matched to form a rotating pair, the adjustment screw and the guide light rod are clearance matched to form a rotating pair, the adjustment screw and the end adjustment knob are clearance matched to form a rotating pair, and the guide refined external threaded step pin is fixed to the shaft end of the guide light rod.

[0019] In order to achieve the second object of the present invention, the following technical solution is provided: a tape cutting method is implemented by the above-mentioned tape cutting device suitable for composite material automatic tape laying equipment, which comprises:

[0020] According to the shape of the strip to be cut, the cutting knife assembly is driven to move horizontally and linearly through the transverse driving motor, and the cutting knife rotation motor is started to drive the cutting knife to rotate to cut the corresponding shape.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The cutting and rotating motions of the ultrasonic cutting blade are controlled by a servo motor, which can be linked with the central axis of the unwinding mechanism to perform interpolation motion and freely cut the required strip shape. The strip cutting device can adjust the cutting depth so as to achieve the effect of not damaging the cut fiber and the backing paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the strip cutting device provided in this embodiment;

[0024] Figure 2 A schematic diagram of a cutting and transverse shifting base mechanism provided in this embodiment;

[0025] Figure 3 A schematic diagram of a cutting lateral drive assembly provided in this embodiment;

[0026] Figure 4 A schematic diagram of a cutting and transverse shifting pallet assembly provided in this embodiment;

[0027] Figure 5 A schematic diagram of the ultrasonic cutting mechanism provided in this embodiment;

[0028] Figure 6 A schematic diagram of a telescopic cylinder drive assembly provided for this embodiment;

[0029] Figure 7 A schematic diagram of a cutting depth fine-tuning assembly provided in this embodiment;

[0030] Figure 8 A schematic diagram of a drag chain trough assembly provided in this embodiment;

[0031] In the figure, 1. cutting transverse shift base mechanism; 11. cutter mounting plate; 12. cutting base support frame; 13. travel switch; 14. accordion protective cover; 15. end mounting plate; 16. cutting transverse drive assembly; 161. cutting transverse drive motor; 162. coupling; 163. precision locking nut; 164. bearing seat; 165. bearing end cover; 166. cutting transverse drive screw; 167. transverse tail bearing seat; 168. cutting transverse shift block; 169. screw tail end cover; 17. separate linear guide; 18. transverse shift slider; 19. mobile base; 2. cutting transverse shift support plate assembly; 21. ultrasonic cutting mechanism; 211. ultrasonic cutting mechanism mounting seat; 212. ultrasonic cutting drive motor; 213. bearing end cover; 214. drive worm; 215. bearing ; 216, cutting knife; 217, driving turbine; 218, transducer driving shaft; 219, transducer connecting rod; 22, telescopic cylinder driving assembly; 221, air pipe joint; 222, elliptical cylinder; 223, cylinder mounting bracket; 224, cylinder connecting plate; 225, cylinder tail bracket; 23, cutting depth fine-tuning assembly; 231, end adjustment knob; 232, guide clamping seat; 233, adjustment screw; 234, guide refined external thread step pin; 235, guide copper sleeve; 236, handle screw; 237, guide light rod; 238, rod end limit collision block; 24, depth detection assembly; 25, hydraulic buffer assembly; 4, drag chain slot assembly; 41, drag chain slot; 42, drag chain slot bracket; 43, drag chain; 44, drag chain auxiliary support bracket; 45, drag chain assembly bracket plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] The present embodiment provides a tape cutting device suitable for composite material fully automatic tape laying equipment. The servo motor drives the cutting transverse shifting pallet assembly to drive the ultrasonic cutting mechanism to move horizontally relative to the transverse shifting base assembly. Two ultrasonically driven blades with separate linear freedom and rotational freedom cut the prepreg tape before laying into the shape required by the user. The telescopic cylinder drive assembly, the depth detection assembly and the cutting depth fine-tuning assembly work together. The cutting depth assembly can be fine-tuned according to the depth information fed back by the depth detection assembly to achieve adjustable cutting depth.

[0034] More specifically Figure 1 As shown, the above-mentioned strip cutting device mainly includes: a cutting transverse moving base mechanism 1, a cutting transverse moving pallet assembly 2, and a drag chain trough assembly 4.

[0035] like Figure 2 As shown, the cutting transverse shifting base mechanism 1 mainly includes: a cutter mounting plate 11, a cutting base support frame 12, a travel switch 13, an accordion protective cover 14, an end mounting plate 15, a cutting transverse driving assembly 16, a separate linear guide rail 17, and a transverse shifting slider 18.

[0036] The cutter mounting plate 11 is fixedly mounted on the side of the cutting transverse shifting base mechanism 1, the cutting base support frame 12 is fixedly mounted on the other side of the cutting transverse shifting base mechanism 1, the travel switch 13 is fixedly mounted on the surface of the cutting base support frame 12, the end of the cutting transverse shifting base mechanism 1 of the end mounting plate 15, the cutting transverse drive assembly 16 is mounted on the outside of the end mounting plate 15, the separated linear guide rail 17 is fixedly mounted on the upper and lower parts of the cutting transverse shifting base mechanism 1, and the accordion protective cover 14 is arranged on the outside of the separated linear guide rail 17 and the cutting transverse drive assembly 16 to play a necessary protective role. The transverse sliding block 18 and the separated linear guide rail 17 are clearance-matched to form a sliding pair.

[0037] like Figure 3As shown, the cutting transverse drive assembly mainly includes: a cutting transverse drive motor, a coupling, a precision locking nut, a bearing seat, a bearing end cover, a cutting transverse drive screw, a transverse tail bearing seat, a cutting transverse shift block, and a screw tail end cover.

[0038] The cutting transverse shifting pallet assembly 2 includes two movable bases symmetrically arranged on the cutting transverse shifting base mechanism 1 , and the two movable bases 19 are fixed by a drag chain assembly 4 .

[0039] like Figure 4 As shown, the cutting transverse shifting pallet assembly 2 mainly includes: an ultrasonic cutting knife mechanism 21, a telescopic cylinder driving assembly 22, a cutting depth fine-tuning assembly 23, a depth detection assembly 24 and a hydraulic buffer assembly 25, and precise cutting is achieved by the simultaneous operation of multiple actuators.

[0040] Furthermore, the ultrasonic cutting mechanism 21 is installed at the left front end of the transverse pallet assembly 2 to ensure that the cutting knife is in full contact with the surface of the material strip, the telescopic cylinder mechanism 22 is fixedly installed at the rear of the ultrasonic cutting mechanism 21, and the cutting depth fine-tuning assembly 23, the depth detection assembly 24 and the hydraulic buffer assembly 25 are fixedly installed at the right end of the transverse pallet assembly 2.

[0041] like Figure 5 The ultrasonic cutting mechanism 21 mainly includes: an ultrasonic cutting mechanism mounting base 211, an ultrasonic cutting drive motor 212, a bearing end cover 213, a drive worm 214, a bearing 215, a cutting knife 216, a drive turbine 217, a transducer drive shaft 218, and a transducer connecting rod 219.

[0042] Furthermore, the ultrasonic cutting drive motor 212 is fixed on the left side of the ultrasonic cutting mechanism 21, the bearing end cover 213 is installed at the end of the ultrasonic cutting mechanism mounting seat 211, the bearing 215 is installed with a clearance fit with the ultrasonic cutting mechanism mounting seat 211 to form a rotating pair, and the remaining components are all installed inside the ultrasonic cutting mechanism mounting seat 211, the driving worm 214 and the driving turbine 217 are matched to form a rotating pair connection, the transducer driving shaft 218 and the driving turbine 217 are clearance fit to form a rotating pair, and the transducer connecting rod 219 is fixedly installed on one side of the ultrasonic cutting mechanism mounting seat 211 to realize energy switching.

[0043] like Figure 6 As shown, the telescopic cylinder driving assembly 22 includes: an air pipe joint 221, an elliptical cylinder 222, a cylinder mounting bracket 223, a cylinder connecting plate 224, and a cylinder tail bracket 225.

[0044] More specifically, the cylinder tail bracket 223 is fixedly mounted on the mobile base 18, the cylinder connecting plate 224 is fixedly mounted above the cylinder tail bracket 225, the cylinder mounting bracket 225 is fixedly mounted between the cylinder connecting plates 224, the elliptical cylinder 222 is fixedly mounted inside the cylinder mounting bracket 223, and the air pipe joint 221 is fixedly mounted above the cylinder mounting bracket 223. The telescopic cylinder driving assembly 22 is connected to one end of the transducer connecting rod 219.

[0045] like Figure 7 As shown, the cutting depth fine-tuning assembly 23 includes: an end adjustment knob 231, a guide clamping seat 232, an adjustment screw 233, a guide refined external thread step pin 234, a guide copper sleeve 235, a handle screw 236, a guide light rod 237, and a rod end limit bumper 238.

[0046] More specifically, the guide clamping seat 232 is fixedly mounted on the mobile base 19, the guide copper sleeve 235 is transitionally matched with the guide clamping seat 232, the guide light rod 237 is clearance matched with the guide copper sleeve 235 to form a rotation pair, the adjustment screw 233 is clearance matched with the guide light rod 237 to form a rotation pair, the adjustment screw 233 is clearance matched with the end adjustment knob 231 to form a rotation pair, the guide refined external thread step pin 234 is fixed on the axial end of the guide light rod 237 to lock the guide light rod 237 to prevent its radial movement. The handle screw 236 is arranged above the guide clamping seat 232 and forms a rotation pair with it.

[0047] like Figure 8 As shown, the drag chain slot assembly 4 includes: a drag chain slot 41, a drag chain slot bracket 42, a drag chain 43, a drag chain auxiliary support bracket 44, and a drag chain assembly bracket plate 45.

[0048] More specifically, the side of the drag chain slot 41 is fixedly installed with the cutting base support frame 12, the drag chain slot bracket 42 is fixedly installed with the side of the drag chain slot 41, the drag chains 43 are connected to each other and stuck inside the drag chain slot 41, and the drag chain auxiliary support frame 44 is fixed on the upper part of the drag chain slot 41 to fix and press the drag chain 43 to prevent the drag chain 43 from detaching.

[0049] This embodiment also provides a strip cutting method, which is implemented by the strip cutting device provided in the above embodiment, and the specific process is as follows:

[0050] First, the handle screw is manually operated to adjust the cutting knife depth so as to cut the prepreg tape fibers without damaging the backing paper, and the fine-tuning accuracy reaches 0.01mm. After the manual adjustment of the cutting knife depth is completed, the cutting knife assembly is moved to the knife length measurement module (pneumatic retracted absolute length gauge) to measure the knife length. The depth detection assembly control system records the current knife length data. After that, when the equipment is turned on, the ultrasonic cutting knife mechanism will automatically detect the knife length. Because the knife tip wear exceeds the threshold set by the system, the system will issue a prompt, and the equipment operator will readjust the knife length or replace the cutter.

[0051] The transverse movement motor is started, and the transverse movement drive motor drives the lead screw to rotate, thereby driving the cutting knife assembly to move horizontally and linearly. At the same time, the cutting knife rotation motor is started, and the ultrasonic cutting drive motor drives the cutting knife to rotate.

[0052] The tape cutting device of the tape laying head is composed of two ultrasonically driven blades with independent linear freedom and rotational freedom, which are used to cut the prepreg tape before laying into the required shape. During the horizontal movement of the cutting and traversing pallet assembly, the travel switch will record its travel distance in real time, and the driving assembly will automatically stop working when it reaches the preset position.

[0053] A cutting pad with a certain rigidity is provided on the back of the prepreg tape for support during cutting, so as to better cut the tape. Since the material used for the cutting pad is a material with a special hardness and a very small friction coefficient with the backing paper, the ultrasonic cutting blade tip will not damage the blade when performing the cutting action after penetrating to a certain depth. The ultrasonic double-cutting blade cutting system has an automatic cleaning function. The ultrasonic cutting module is equipped with a cleaning brush, which uses a rotary brush for cleaning, which can effectively remove resin, fiber debris and other foreign objects that affect the cutting accuracy and quality on the cutting blade without damaging the blade. After the equipment has been running for a certain period of time, the operator can use this module to clean the blade.

[0054] In summary, the device provided in this embodiment is implemented by a ball screw and is equipped with a gap compensation system to ensure that the tolerance requirements are met. The cutting motion and rotation motion of the ultrasonic cutting blade are controlled by a servo, and can be linked with the central axis of the unwinding mechanism to perform interpolation motion and freely cut out the required strip shape. The strip cutting device can adjust the cutting depth so as to achieve the effect of not damaging the cut fiber and the backing paper.

[0055] At the same time, the diameter of the reel is measured by a laser distance sensor, and the torque of the reel mechanism is dynamically controlled according to the reel diameter to achieve precise and constant tension control. When the tape laying equipment is in the laying state, the unwinding device and the backing paper recovery device enter the position mode, and can cooperate with the double-knife cutting device to realize cutting position interpolation to achieve precise laying, thereby ensuring that the accuracy of the cut tape is controlled at ≤0.5mm.

[0056] In addition, the terms "upper", "lower", "inner", "outer", "front", "rear" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Unless otherwise specifically stated, the relative steps, numerical expressions and values ​​of the components and steps described in these embodiments do not limit the scope of the present invention.

[0057] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

[0058] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A tape cutting device suitable for composite material automatic tape laying equipment, characterized in that: It includes a cutting and transverse shifting base mechanism, a cutting and transverse shifting support plate assembly arranged on the cutting and transverse shifting base mechanism, and a drag chain slot assembly; The cutting transverse shifting base mechanism comprises a cutting base support frame, and a cutter mounting plate extending outwardly from one side of the cutting base support frame; The cutting transverse moving support plate assembly comprises two movable bases arranged on the cutter mounting plate, and an ultrasonic cutting mechanism and a cutter adjustment mechanism arranged on the movable bases; The two mobile bases are located on both sides of the cutter mounting plate and are staggered with the length direction of the cutter mounting plate as the center line, and the two mobile bases are connected head to tail through a drag chain slot assembly to form a closed-loop movement.

2. The tape cutting device suitable for composite material automatic tape laying equipment according to claim 1 is characterized in that: The cutting transverse shifting base mechanism also includes a cutting transverse shifting driving assembly for driving the cutting transverse shifting supporting plate assembly to move transversely along the cutter mounting plate.

3. The tape cutting device suitable for composite material automatic tape laying equipment according to claim 2 is characterized in that: The cutting transverse drive assembly includes a cutting transverse drive motor, a coupling, a precision locking nut, a bearing seat, a bearing end cover, a cutting transverse drive screw, a transverse tail bearing seat, a cutting transverse shift block and a screw tail end cover.

4. The tape cutting device suitable for composite material automatic tape laying equipment according to claim 1, characterized in that: The ultrasonic cutting mechanism comprises an ultrasonic cutting mechanism mounting seat, an ultrasonic cutting driving motor, a bearing end cover, a driving worm, a bearing, a cutting knife, a driving turbine, a transducer driving shaft and a transducer connecting rod.

5. The tape cutting device suitable for composite material automatic tape laying equipment according to claim 1, characterized in that: The cutter adjustment mechanism comprises a telescopic cylinder driving assembly, a cutting depth fine-tuning assembly, a depth detection assembly and a hydraulic buffer assembly which are arranged on a movable base.

6. The tape cutting device suitable for composite material automatic tape laying equipment according to claim 5, characterized in that: The telescopic cylinder drive assembly includes: an air pipe joint, an elliptical cylinder, a cylinder mounting bracket, a cylinder connecting plate and a cylinder tail bracket, wherein the cylinder tail bracket is fixedly mounted on a mobile base, the cylinder connecting plate is fixedly mounted above the cylinder tail bracket, the cylinder mounting bracket is fixedly mounted between the cylinder connecting plates, the elliptical cylinder is fixedly mounted inside the cylinder mounting bracket, and the air pipe joint is fixedly mounted on the cylinder mounting bracket.

7. The tape cutting device suitable for composite material automatic tape laying equipment according to claim 5, characterized in that: The cutting depth fine-tuning assembly includes: an end adjustment knob, a guide clamping seat, an adjustment screw, a guide refined external threaded step pin, a guide copper sleeve, a handle screw, a guide light rod and a rod end limit bumper, wherein the guide clamping seat is fixedly mounted on a movable base, the guide copper sleeve and the guide clamping seat are transitionally matched, the guide light rod and the guide copper sleeve are clearance matched to form a rotating pair, the adjustment screw and the guide light rod are clearance matched to form a rotating pair, the adjustment screw and the end adjustment knob are clearance matched to form a rotating pair, and the guide refined external threaded step pin is fixed to the shaft end of the guide light rod.

8. A strip cutting method, characterized in that: The method is realized by a tape cutting device suitable for composite material automatic tape laying equipment as claimed in any one of claims 1 to 7, which comprises: According to the shape of the strip to be cut, the cutting knife assembly is driven to move horizontally and linearly through the transverse driving motor, and the cutting knife rotation motor is started to drive the cutting knife to rotate to cut the corresponding shape.

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