Filament placement head cut-off structure

Abstract

The invention discloses a cut-off structure of a fiber placement head. The cut-off structure comprises an assembly frame, a compaction roller, a yarn feeding guide assembly and a synchronous cut-off assembly. The yarn feeding guide assembly is fixedly assembled in the assembly frame and comprises a yarn feeding roller, and a yarn stopping roller is arranged on one side of the yarn feeding roller. The synchronous cut-off assembly is fixedly assembled between the yarn stopping roller and the compaction roller and comprises a plurality of upper cutters, a plurality of lower cutters are evenly distributed below the upper cutters, limiting cylinders are slidably assembled on the two sides of the upper cutters and the lower cutters, limiting ejector rods are slidably assembled in the limiting cylinders, and the limiting ejector rods are slidably assembled in the limiting cylinders. The ends, located outside the limiting cylinders, of the limiting ejector rods are fixedly connected with clamping and fixing air bag cushions. According to the fiber placement head cutting structure disclosed by the invention, through the arrangement of corresponding structures, the damage of friction to fiber tows is reduced, meanwhile, the to-be-cut fiber tows can be clamped and fixed, and the effect of cutting the fiber tows is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of filament laying heads, and particularly relates to a filament laying head cutting structure. Background Art

[0002] A filament winding machine is a composite material manufacturing device used to lay prepreg fiber bundles on a mold or substrate according to a preset path and tension. The filament laying head is the functional execution part of the automatic filament winding machine, mainly used to cooperate with the movement of the rotary tooling to achieve automatic filament winding. The filament laying head performs actions such as yarn feeding, yarn cutting, and yarn stopping during the filament laying process.

[0003] In the prior art, most of the filament laying head cutting structures are composed of a fixed cutter and a moving cutter. By setting a driving structure to control the lifting and moving of the moving cutter, the fixed cutter is used to cooperate with the cutting of the fiber bundle. The fixed cutter is mainly used to support and limit the fiber bundle. Although this method can achieve the cutting of the fiber bundle, in the actual application process, the friction between the fixed cutter and the fiber bundle will cause scratches on the fiber bundle, and the fiber bundle to be cut cannot be cut and limited, resulting in a poor cutting effect of the filament laying head cutting structure on the fiber bundle.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a filament laying head cutting structure.

[0005] The information disclosed in this background art section is only intended to enhance the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a filament laying head cutting structure, which can improve the cutting effect on the fiber bundle.

[0007] To achieve the above purpose, a specific embodiment of the present invention provides a filament laying head cutting structure, including: an assembly frame, a compaction roller, a yarn feeding guiding assembly, and a synchronous cutting assembly.

[0008] A compaction roller is rotatably assembled in the assembly frame.

[0009] The yarn feeding guiding assembly is fixedly assembled in the assembly frame. The yarn feeding guiding assembly includes a yarn feeding roller, the yarn feeding roller is rotatably assembled in the assembly frame, and a yarn stopping roller is arranged on one side of the yarn feeding roller, and the yarn stopping roller is rotatably connected to the assembly frame.

[0010] The synchronous cutting assembly is fixedly assembled between the yarn stopping roller and the compaction roller. The synchronous cutting assembly includes a plurality of upper cutting knives, and the plurality of upper cutting knives are all slidably assembled in the assembly frame. A plurality of lower cutting knives are evenly arranged below the plurality of upper cutting knives. The upper cutting knives and the lower cutting knives are arranged in cooperation. Limit cylinders are slidably assembled on both sides of the plurality of upper cutting knives and lower cutting knives. Limit ejector rods are slidably assembled in the plurality of limit cylinders. Clamping and fixing air cushion pads are fixedly connected to one ends of the limit ejector rods located outside the limit cylinders.

[0011] A pair of positive pressure cleaning mechanisms are assembled in the assembly frame. The pair of positive pressure cleaning mechanisms are respectively assembled outside the upper cutting knives and the lower cutting knives. The positive pressure cleaning mechanism is used for cleaning the cutting edges of the upper cutting knives and the lower cutting knives and cleaning impurities.

[0012] In one or more embodiments of the present invention, a driving motor is fixedly assembled on the outer side of the assembly frame. The output shaft of the driving motor is in transmission connection with the yarn feeding roller. The driving motor plays a role in providing power. By controlling the operation of the driving motor, the yarn feeding roller is rotationally driven, so as to facilitate the yarn feeding process of the tow. A plurality of evenly distributed yarn feeding wheels are assembled on one side of the yarn feeding roller. The tow is assisted in yarn feeding through the plurality of yarn feeding wheels.

[0013] In one or more embodiments of the present invention, a plurality of evenly distributed yarn stopping wheels are arranged on one side of the yarn stopping roller. The tow is stopped from feeding through the cooperation of the plurality of yarn stopping wheels and the yarn stopping roller. Wheel frames are rotatably assembled on the outer sides of the plurality of yarn feeding wheels and the yarn stopping wheels. The wheel frames are used for assembling and limiting the yarn feeding wheels or the yarn stopping wheels.

[0014] In one or more embodiments of the present invention, multiple groups of evenly distributed control cylinders are arranged on one side of the plurality of wheel frames facing away from the yarn feeding wheels or the yarn stopping wheels. The multiple groups of control cylinders are fixedly assembled in the assembly frame. The piston rods of the multiple groups of control cylinders are fixedly connected to the wheel frames. By controlling the intake of the multiple groups of control cylinders, the piston rods of the control cylinders are telescopically moved, so as to facilitate the movement control of the yarn feeding wheels or the yarn stopping wheels.

[0015] In one or more embodiments of the present invention, multiple groups of evenly distributed driving cylinders are arranged on the sides of the plurality of upper cutting knives and lower cutting knives facing away from each other. By controlling the intake of the driving cylinders, the telescopic rods of the driving cylinders are driven and controlled, so as to facilitate the lifting movement control of the upper cutting knives and the lower cutting knives. A cylinder assembly frame is fixedly assembled on the outer sides of the multiple groups of driving cylinders. The cylinder assembly frame is fixedly connected to the inner wall of the assembly frame. The cylinder assembly frame plays a role in assembling and fixing the multiple groups of driving cylinders.

[0016] In one or more embodiments of the present invention, on one side where multiple groups of the driving cylinders are close to each other, cylinder piston rods are slidably assembled. The cylinder piston rods play a role in assembling and fixing the connecting plate and controlling its movement. At one end of the cylinder piston rods located outside the driving cylinders, connecting plates are fixedly connected, and multiple upper cutting knives and lower cutting knives are fixedly connected to the connecting plates. The connecting plates assemble and fix the upper cutting knives, lower cutting knives or the limiting cylinders.

[0017] In one or more embodiments of the present invention, at one end of multiple limiting ejector rods located inside the limiting cylinders, piston plates are fixedly connected. The piston plates play a role in supporting and fixing the limiting ejector rods and limiting their movement. A return spring is fixedly connected between the piston plates and the limiting cylinders. The piston plates are supported and reset by the contraction and reset of the return spring.

[0018] In one or more embodiments of the present invention, on one side where multiple clamping and fixing air cushions are close to each other, clamping pads are fixedly connected. By setting the clamping pads, the stability of the clamping and fixing air cushions for clamping and fixing the fiber tow is improved.

[0019] In one or more embodiments of the present invention, the horizontal height of the clamping and fixing air cushions on both sides of multiple upper cutting knives is lower than the lower end height of the upper cutting knives, and the horizontal height of the clamping and fixing air cushions on both sides of multiple lower cutting knives is higher than the top end height of the lower cutting knives. This facilitates the clamping and fixing air cushions to act on the fiber tow prior to the upper cutting knives and lower cutting knives during the movement of the cylinder piston rods, improving the subsequent cutting effect on the fiber tow.

[0020] In one or more embodiments of the present invention, the clamping and fixing air cushions are hollow, an exhaust passage is provided in the limiting ejector rods, and the clamping and fixing air cushions are communicated with the limiting cylinders through the exhaust passage. This facilitates the air in the limiting cylinders to be transported into the clamping and fixing air cushions along the exhaust passage during the compression of the limiting ejector rods, thereby improving the effect of the clamping and fixing air cushions in supporting and limiting the fiber tow through the expansion of the clamping and fixing air cushions.

[0021] Compared with the prior art, a fiber placement head cutting structure disclosed in the present invention reduces the damage to the fiber tow caused by friction through the setting of corresponding structures. At the same time, it can clamp and fix the fiber tow to be cut, improving the cutting effect on the fiber tow. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a three-dimensional view of the first-angle partial structure of a fiber placement head cutting structure in an embodiment of the present invention;

[0024] Figure 2 It is a three-dimensional view of the second-angle partial structure of a fiber placement head cutting structure in an embodiment of the present invention;

[0025] Figure 3 It is Figure 2 a schematic diagram of the structure at position A in

[0026] Figure 4 It is a front view sectional view of a fiber placement head cutting structure in an embodiment of the present invention;

[0027] Figure 5 It is Figure 4 a schematic diagram of the structure at position B in

[0028] Figure 6 It is a three-dimensional view of a fiber placement head cutting structure in an embodiment of the present invention;

[0029] Figure 7 It is Figure 6 a schematic diagram of the structure at position C in

[0030] Figure 8 It is another three-dimensional view of a fiber placement head cutting structure in an embodiment of the present invention.

[0031] Main reference numeral description:

[0032] 1 - Assembly frame, 101 - Compaction roller, 2 - Yarn feeding guide assembly, 201 - Yarn feeding roller, 202 - Yarn stopping roller, 203 - Driving motor, 204 - Yarn feeding wheel, 205 - Yarn stopping wheel, 206 - Wheel frame, 207 - Control cylinder, 3 - Synchronous cutting assembly, 301 - Upper cutting knife, 302 - Lower cutting knife, 303 - Limiting cylinder, 304 - Limiting ejector rod, 305 - Clamping and fixing airbag pad, 306 - Driving cylinder, 307 - Cylinder assembly frame, 308 - Cylinder piston rod, 309 - Connecting plate, 310 - Piston plate, 311 - Return spring, 312 - Clamping pad, 4 - Positive pressure cleaning mechanism, 401 - Assembly exhaust plate, 402 - Cleaning air nozzle, 403 - Delivery air nozzle, 404 - Adjusting rotating shaft, 405 - Driving gear, 406 - Driving gear, 407 - Adjusting motor. Detailed implementation manners

[0033] To enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with 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, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1 to 8 shown, a filament head cutting structure in an embodiment of the present invention includes: an assembly frame 1, a compaction roller 101, a yarn feeding and guiding assembly 2, and a synchronous cutting assembly 3.

[0035] As Figure 1 shown, the compaction roller 101 is rotatably assembled in the assembly frame 1. The fiber filament bundle is compacted by the rotation of the compaction roller 101.

[0036] As Figure 4 shown, the yarn feeding and guiding assembly 2 is fixedly assembled in the assembly frame 1. The yarn feeding and guiding assembly 2 includes a yarn feeding roller 201, and the yarn feeding roller 201 is rotatably assembled in the assembly frame 1. The limited filament bundle is fed by the yarn feeding roller 201.

[0037] As Figure 4 shown, a yarn stopping roller 202 is arranged on one side of the yarn feeding roller 201, and the yarn stopping roller 202 is rotatably connected to the assembly frame 1. The fiber filament bundle is guided and stopped by the yarn stopping roller 202.

[0038] As Figures 1 to 2 shown, a driving motor 203 is fixedly assembled outside the assembly frame 1, and the output shaft of the driving motor 203 is in transmission connection with the yarn feeding roller 201. The driving motor 203 serves to provide power. By controlling the operation of the driving motor 203, the yarn feeding roller 201 is rotationally driven, so as to facilitate the feeding of the filament bundle.

[0039] As Figure 4 shown, a plurality of evenly distributed yarn feeding wheels 204 are assembled on one side of the yarn feeding roller 201. The filament bundle is assisted in feeding by the plurality of yarn feeding wheels 204.

[0040] As Figure 4 shown, a plurality of evenly distributed yarn stopping wheels 205 are arranged on one side of the yarn stopping roller 202. The filament bundle is stopped by the cooperation of the plurality of yarn stopping wheels 205 and the yarn stopping roller 202.

[0041] As Figure 4 shown, a wheel frame 206 is rotatably assembled on the outer sides of the plurality of yarn feeding wheels 204 and the yarn stopping wheels 205. The yarn feeding wheels 204 or the yarn stopping wheels 205 are assembled and limited by the wheel frame 206.

[0042] As shown Figure 4 in FIG. 1, on one side of multiple wheel carriers 206 facing away from the yarn feeding wheel 204 or the yarn stopping wheel 205, multiple groups of evenly distributed control cylinders 207 are evenly arranged. Multiple groups of control cylinders 207 are fixedly assembled in the assembly frame 1, and the piston rods of multiple groups of control cylinders 207 are fixedly connected to the wheel carrier 206. By controlling the intake of multiple groups of control cylinders 207, the piston rods of the control cylinders 207 are telescopically moved, so as to facilitate the movement control of the yarn feeding wheel 204 or the yarn stopping wheel 205.

[0043] As shown Figures 2 to 3 in FIG. 2, the synchronous cutting assembly 3 is fixedly assembled between the yarn stopping roller 202 and the compaction roller 101. The synchronous cutting assembly 3 includes multiple upper cutting knives 301, and multiple upper cutting knives 301 are all slidably assembled in the assembly frame 1. Multiple lower cutting knives 302 are evenly arranged below the multiple upper cutting knives 301, and the upper cutting knives 301 and the lower cutting knives 302 are arranged in cooperation. The fiber filament is cut through the cooperation of multiple upper cutting knives 301 and lower cutting knives 302.

[0044] As shown Figures 2 to 5 in FIG. 3, on the sides of multiple upper cutting knives 301 and lower cutting knives 302 facing away from each other, multiple groups of evenly distributed driving cylinders 306 are evenly arranged. By controlling the intake of the driving cylinders 306, the telescopic rods of the driving cylinders 306 are driven and controlled, so as to facilitate the lifting and moving control of the upper cutting knives 301 and the lower cutting knives 302.

[0045] As shown Figures 2 to 5 in FIG. 4, a cylinder assembly frame 307 is fixedly assembled outside multiple groups of driving cylinders 306, and the cylinder assembly frame 307 is fixedly connected to the inner wall of the assembly frame 1. The cylinder assembly frame 307 plays a role in assembling and fixing multiple groups of driving cylinders 306.

[0046] As shown Figures 2 to 5 in FIG. 5, on the sides of multiple groups of driving cylinders 306 close to each other, cylinder piston rods 308 are all slidably assembled. The cylinder piston rods 308 play a role in assembling and fixing and moving control of the connecting plate 309.

[0047] As shown Figures 2 to 5 in FIG. 6, at one end of the cylinder piston rod 308 located outside the driving cylinder 306, a connecting plate 309 is fixedly connected, and multiple upper cutting knives 301 and lower cutting knives 302 are all fixedly connected to the connecting plate 309. The connecting plate 309 plays a role in assembling and fixing the upper cutting knives 301, the lower cutting knives 302 or the limiting cylinder 303.

[0048] As shown Figures 2 to 5As shown in the figure, on both sides of multiple upper cutting knives 301 and lower cutting knives 302, limit cylinders 303 are slidably assembled. The limit cylinders 303 play a role in assembling and limiting the position of the limit ejector rods 304 and guiding their movement. Multiple limit ejector rods 304 are slidably assembled within the multiple limit cylinders 303. The limit ejector rods 304 play a role in assembling and fixing the clamping and fixing airbag pads 305 and controlling their movement.

[0049] Specifically, the clamping and fixing airbag pad 305 is hollowly arranged, and an exhaust passage is provided in the limit ejector rod 304. The clamping and fixing airbag pad 305 is communicated with the limit cylinder 303 through the exhaust passage. This facilitates the air within the limit cylinder 303 being conveyed along the exhaust passage into the clamping and fixing airbag pad 305 during the compression of the limit ejector rod 304, thereby improving the effect of the clamping and fixing airbag pad 305 in supporting and limiting the fiber tow through its expansion.

[0050] As Figures 2 to 5 shown in the figure, at one end of multiple limit ejector rods 304 located within the limit cylinders 303, piston plates 310 are fixedly connected. The piston plates 310 play a role in supporting and fixing the limit ejector rods 304 and limiting their movement.

[0051] As Figures 2 to 5 shown in the figure, a return spring 311 is fixedly connected between the piston plate 310 and the limit cylinder 303. The contraction and reset of the return spring 311 support and reset the piston plate 310.

[0052] As Figures 2 to 5 shown in the figure, at one end of the limit ejector rods 304 located outside the limit cylinders 303, clamping and fixing airbag pads 305 are fixedly connected. The clamping and fixing airbag pads 305 cooperate to clamp and fix the fiber tow to be cut.

[0053] As Figures 2 to 5 shown in the figure, on one side where multiple sets of clamping and fixing airbag pads 305 are adjacent to each other, clamping pads 312 are fixedly connected. By providing the clamping pads 312, the stability of the clamping and fixing airbag pads 305 in clamping and fixing the fiber tow is improved.

[0054] Specifically, the horizontal height of the clamping and fixing airbag pads 305 on both sides of the multiple upper cutting knives 301 is lower than the lower end height of the upper cutting knives 301, and the horizontal height of the clamping and fixing airbag pads 305 on both sides of the multiple lower cutting knives 302 is higher than the top end height of the lower cutting knives 302. This facilitates the clamping and fixing airbag pads 305 acting on the fiber tow prior to the upper cutting knives 301 and lower cutting knives 302 during the movement of the cylinder piston rod 308. The effect of subsequent cutting of the fiber tow is improved.

[0055] As Figures 2 to 5As shown, a pair of positive pressure cleaning mechanisms 4 are assembled in the assembly frame 1, and the pair of positive pressure cleaning mechanisms 4 are respectively assembled on the outside of the upper cutter 301 and the lower cutter 302, and the positive pressure cleaning mechanisms 4 are used to clean the cutting edges of the upper cutter 301 and the lower cutter 302 and remove impurities.

[0056] like Figures 2 to 5 As shown, the positive pressure cleaning mechanism 4 includes a pair of assembly exhaust plates 401, which are symmetrically arranged on both sides of the upper cutter 301. The assembly exhaust plates 401 play the role of assembling and fixing the multiple cleaning gas nozzles 402 and conducting the gas.

[0057] like Figures 2 to 5 As shown, a pair of exhaust plates 401 are fixedly connected to a side close to each other with multiple groups of evenly distributed cleaning air nozzles 402. The multiple groups of cleaning air nozzles 402 can output compressed air to clean the cutting edges of the upper cutter 301 and the lower cutter 302 by blowing air.

[0058] like Figures 2 to 5 As shown, a pair of assembly exhaust plates 401 are fixedly connected to opposite sides with a delivery air nozzle 403 , so as to facilitate the delivery of compressed air into the assembly exhaust plates 401 through the delivery air nozzle 403 .

[0059] like Figures 6 to 7 As shown, both sides of a pair of assembly exhaust plates 401 are fixedly connected with adjustment shafts 404, and the adjustment shafts 404 are rotatably connected to the assembly frame 1. The assembly exhaust plates 401 are adjusted in angle by rotating the adjustment shafts 404, so as to facilitate the adjustment of the blowing angles of the multiple groups of cleaning air nozzles 402.

[0060] like Figures 6 to 7 As shown, one end of the adjustment shaft 404 outside the assembly frame 1 is fixedly connected to a driving gear 405. The driving gear 405 plays a role of rotationally driving the adjustment shaft 404. A pair of transmission gears 406 are meshed between the driving gears 405. The pair of driving gears 405 are controlled by the pair of transmission gears 406, so that the pair of driving gears 405 can rotate at opposite rotation angles under the action of the pair of transmission gears 406.

[0061] like Figure 8 As shown, a pair of adjusting motors 407 are fixedly connected to one side of the assembly frame 1 away from the transmission gear 406, and the output shafts of the adjusting motors 407 are in transmission connection with the adjusting shaft 404. The adjusting motors 407 provide power, and the adjusting shaft 404 is driven to rotate by controlling the operation of the adjusting motors 407.

[0062] During specific use, the yarn feeding roller 201 can be driven to rotate by controlling the operation of the driving motor 203, and the fiber filament bundle can be guided and conveyed through the cooperation of the yarn feeding roller 201 and multiple yarn feeding wheels 204, and the yarn stopping roller 202 and multiple yarn stopping wheels 205. Subsequently, the extension of the cylinder piston rod 308 can be controlled by controlling the intake of the driving cylinder 306. As the cylinder piston rod 308 extends, multiple clamping and fixing airbag pads 305 can clamp and fix the fiber filament bundle.

[0063] After clamping and fixing, the clamping and fixing airbag pad 305 can drive the limit ejector rod 304 to move under an external force, thereby compressing the return spring 311. Subsequently, the fiber filament bundle can be cut by the cooperation of the upper cutter 301 and the lower cutter 302.

[0064] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0065] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wire placing head cutting structure, characterized in that: include: An assembly frame, in which a compaction roller is rotatably mounted; A yarn feeding guide assembly is fixedly mounted in the assembly frame, the yarn feeding guide assembly comprises a yarn feeding roller, the yarn feeding roller is rotatably mounted in the assembly frame, a yarn stopping roller is arranged on one side of the yarn feeding roller, and the yarn stopping roller is rotatably connected to the assembly frame; A synchronous cutting assembly is fixedly mounted between the yarn stopping roller and the compacting roller, the synchronous cutting assembly comprises a plurality of upper cutters, the plurality of upper cutters are slidably mounted in an assembly frame, a plurality of lower cutters are arranged below the plurality of upper cutters, the upper cutters and the lower cutters are matched with each other, both sides of the plurality of upper cutters and the lower cutters are slidably mounted with limiting cylinders, the plurality of limiting cylinders are slidably mounted with limiting push rods, and one end of the limiting push rod located outside the limiting cylinder is fixedly connected with a clamping and fixing airbag cushion; A pair of positive pressure cleaning mechanisms are installed inside the cutter, and a pair of positive pressure cleaning mechanisms are installed on the outer sides of the upper cutter and the lower cutter respectively. The positive pressure cleaning mechanisms are used to clean the cutting edges of the upper cutter and the lower cutter and remove impurities.

2. A wire placing head cutting structure according to claim 1, characterized in that: A driving motor is fixedly mounted on the outer side of the assembly frame, and an output shaft of the driving motor is drivingly connected to a yarn feeding roller. A plurality of evenly distributed yarn feeding wheels are mounted on one side of the yarn feeding roller.

3. A wire placing head cutting structure according to claim 2, characterized in that: A plurality of evenly distributed yarn stopping wheels are arranged on one side of the yarn stopping roller, and wheel frames are rotatably mounted on the outer sides of the plurality of yarn feeding wheels and the yarn stopping wheels.

4. A wire placing head cutting structure according to claim 3, characterized in that: A plurality of evenly distributed control cylinders are arranged on one side of the wheel frames away from the yarn feeding wheel or the yarn stopping wheel. The plurality of control cylinders are fixedly assembled in the assembly frame, and the piston rods of the plurality of control cylinders are fixedly connected to the wheel frames.

5. The wire placing head cutting structure according to claim 1, characterized in that: A plurality of groups of evenly distributed driving cylinders are arranged on the side opposite to the lower cutting knives, and a cylinder assembly frame is fixedly assembled on the outer side of the plurality of groups of driving cylinders, and the cylinder assembly frame is fixedly connected to the inner wall of the assembly frame.

6. A wire placing head cutting structure according to claim 5, characterized in that: The close sides of the multiple groups of driving cylinders are all slidably equipped with cylinder piston rods, and the ends of the cylinder piston rods located outside the driving cylinders are fixedly connected to a connecting plate, and the multiple upper cutters and lower cutters are fixedly connected to the connecting plate.

7. The wire placing head cutting structure according to claim 1, characterized in that: One end of each of the plurality of limit push rods located in the limit cylinder is fixedly connected to a piston plate, and a return spring is fixedly connected between the piston plate and the limit cylinder.

8. The wire placing head cutting structure according to claim 1, characterized in that: The sides of the plurality of groups of clamping and fixing airbag cushions that are close to each other are all fixedly connected with clamping pads.

9. The wire placing head cutting structure according to claim 1, characterized in that: The horizontal heights of the airbag cushions clamped and fixed on both sides of the multiple upper cutters are lower than the lower end height of the upper cutters, and the horizontal heights of the airbag cushions clamped and fixed on both sides of the multiple lower cutters are higher than the top end height of the lower cutters.

10. The wire placing head cutting structure according to claim 1, characterized in that: The clamping and fixing airbag cushion is hollow, the limiting push rod and the piston plate are provided with exhaust passages, and the clamping and fixing airbag cushion and the limiting cylinder are communicated with each other through the exhaust passages.

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