Manufacturing equipment for flame-retardant polyester yarn

Abstract

The invention belongs to the field of flame-retardant polyester yarn production, and particularly relates to flame-retardant polyester yarn manufacturing equipment which comprises a conveying mechanism, a cutting mechanism, a conveying mechanism, a cutting mechanism and a cutting mechanism. The cutting-off mechanism is installed above the conveying mechanism and used for conducting adjustable cutting on the flame-retardant polyester yarn conveyed by the conveying mechanism, the cutting-off mechanism comprises a U-shaped rod and a rotating rod cam, a cross-shaped groove is formed in the transverse end of the U-shaped rod, a cross-shaped block is slidably connected into the cross-shaped groove, one side of the cross-shaped block is fixedly connected with a transverse plate, and the other side of the cross-shaped block is fixedly connected with the rotating rod cam. The bottom of the transverse plate is fixedly connected with a cutter; and through the cutting mechanism, the cooling mechanism and the compensation mechanism, the comprehensive performance of the flame-retardant polyester yarn production equipment is remarkably improved. According to the cutting mechanism, accurate online adjustment of the transverse position of a cutter is achieved through sliding fit of a cross block and a U-shaped rod in combination with gear and rack transmission, the production requirements of different cutting lengths can be flexibly met without shutdown, and the production flexibility and efficiency of equipment are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of flame-retardant polyester filament production, specifically to a device for producing flame-retardant polyester filament. Background Technology

[0002] As a functional fiber that combines flame retardant properties with textile processing adaptability, the precise control of key processes in the production of flame-retardant polyester filament directly determines the stability of product quality. The flame-retardant polyester filament production equipment system mainly includes a flame-retardant polyester filament cutting device. This device is the core equipment connecting the spinning and post-processing stages, undertaking the crucial mission of precisely cutting continuous flame-retardant polyester filaments into short fibers of a predetermined length. The cutting process optimizes key processes; in particular, high-precision cutting tools and automated control ensure the uniformity of fiber segment length, improving production efficiency and product quality.

[0003] In existing technologies, during high-speed continuous cutting operations, the friction between the cutter and the fiber generates a large amount of heat, which can easily lead to high-temperature softening of the cutting edge and accelerated wear. This not only affects the quality of the cut but also shortens the service life of the cutter. Moreover, traditional equipment lacks online compensation functions for cutter wear and often relies on manual periodic disassembly, grinding, or replacement. This not only increases maintenance costs and downtime but also makes it difficult to ensure that the cutting edge is always in optimal working condition, affecting the consistency of product cutting length and quality stability. Summary of the Invention

[0004] To address the problem that existing technologies easily lead to high-temperature softening of the cutting edge and accelerated wear, this invention proposes a device for manufacturing flame-retardant polyester filaments.

[0005] The technical solution adopted by this invention to solve its technical problem is: a device for producing flame-retardant polyester yarn, comprising:

[0006] The conveying mechanism is used to transport the flame-retardant polyester filaments to the cutting mechanism for cutting.

[0007] A cutting mechanism, installed above a conveying mechanism, is used to adjustably cut the flame-retardant polyester filaments conveyed by the conveying mechanism. The cutting mechanism includes a U-shaped rod and a rotating rod cam. A cross-shaped groove is opened inside the transverse end of the U-shaped rod, and a cross block is slidably connected in the cross-shaped groove. A horizontal plate is fixedly connected to one side of the cross block, and a cutter is fixedly connected to the bottom of the horizontal plate. The horizontal plate changes the position between the cutter and the flame-retardant polyester filaments by moving the cross block on the U-shaped rod. The U-shaped rod rotates through the rotating rod and the cam, causing the cutter to move up and down reciprocally, thereby realizing the adjustable cutting of the flame-retardant polyester filaments.

[0008] The cooling mechanism is installed outside the conveying mechanism to cool the cutter during operation and prevent the cutting edge from softening due to excessive temperature.

[0009] The compensation mechanism, installed outside the conveying mechanism, is used to intermittently grind both sides of the cutter to compensate for cutting wear and avoid excessive wear of the cutter edge caused by continuous grinding.

[0010] Preferably, a rack and a connecting plate are fixedly connected to one side of the cross block and the U-bar, respectively. A rotating rod is rotatably connected to the top of the connecting plate via a bearing. A first gear and a hand ring are fixedly connected to the top and bottom of the rotating rod through the connecting plate, respectively. A first sprocket is fitted onto the outer ring of the rotating rod.

[0011] Preferably, the cross blocks are slidably connected to the U-rod within the cross-shaped groove, the first gear is meshed with the rack, and the top of the cutter and the bottom of the cross plate are both provided with connecting grooves to create communication.

[0012] Preferably, the cooling mechanism includes a circular plate fitted on a rotating rod, a short rod fixedly connected to the front of the circular plate, a pull rod rotatably connected to one side of the short rod via a bearing, a piston rod rotatably connected to the pull rod via a bearing, a piston fixedly connected to one side of the piston rod, a sealing cylinder fitted around the outer ring of the piston, a material extraction pipe and a material discharge pipe respectively fitted to the top and bottom of the sealing cylinder, and a U-shaped seat provided on the inner wall of both the material extraction pipe and the material discharge pipe.

[0013] Preferably, the inner cavity of the U-shaped seat is rotatably connected to a rotatable block via a bearing, the bottom of the rotatable block is fixedly connected to a baffle, the bottom of the extraction tube is fitted with a liquid storage box, the top of the liquid storage box is provided with a liquid filling groove, and the inner cavity of the liquid filling groove is provided with a sealing cover.

[0014] Preferably, a liquid delivery pipe is sleeved between the top of the discharge pipe and the bottom of the horizontal plate, and the liquid delivery pipe is made of a flexible hose.

[0015] Preferably, the compensation mechanism includes a connecting rod and a connecting frame. The outer rings of the connecting rod and the rotating rod are fitted with synchronous pulleys and cams. The two synchronous pulleys are externally connected to belts. The connecting frame has two hollow grooves. The inner cavities of the two hollow grooves are provided with T-shaped blocks. The tops of the two T-shaped blocks are fixedly connected to grinding blocks.

[0016] Preferably, the front sides of the two T-shaped blocks and the connecting frame are respectively provided with a first round seat and a second round seat, and a spiral spring is sleeved between the outer rings of the first round seat and the second round seat.

[0017] Preferably, the conveying mechanism includes a base, a fixed platform is fixedly connected to the top of the base, two long rods are rotatably connected to the inner cavity of the fixed platform through bearings, a conveyor belt is movably connected to the outside of the two long rods, a support plate is fixedly connected to the front of the fixed platform, a motor is provided on the front of the support plate, the output end of the motor is fixedly connected to one of the long rods, the fixed platform is rotatably connected to the connecting rod through bearings, and is fixedly connected to the connecting frame.

[0018] Preferably, the inner cavity of the fixed platform is rotatably connected to a round rod via a bearing. A rolling roller is fitted around the outer ring of one end of the round rod located inside the fixed platform. The outer rings of the round rod and the long rod are fitted with meshing second gears. A second sprocket is also fitted around the outside of the long rod. A chain is movably connected to the outside of the second sprocket and the first sprocket.

[0019] The advantages of this invention are:

[0020] 1. This invention significantly improves the overall performance of flame-retardant polyester filament production equipment through a cutting mechanism, a cooling mechanism, and a compensation mechanism. The cutting mechanism utilizes the sliding engagement of a cross block and a U-bar, combined with gear and rack transmission, to achieve precise online adjustment of the cutter's lateral position. This allows for flexible adaptation to different cutting length requirements without machine downtime, greatly improving the equipment's production flexibility and efficiency. Simultaneously, the built-in cooling mechanism, through a piston pump system driven by a rotating rod, precisely sprays coolant onto the cutter edge, effectively preventing the edge from softening due to high temperatures during high-speed cutting. This not only ensures the quality of the cut surface but also significantly extends the cutter's service life.

[0021] 2. This invention achieves intermittent automatic sharpening of the cutting edge through a compensation mechanism that links the synchronous pulley and the cam. This mechanism performs micro-sharpening compensation during the cutter's non-working periods, combined with the constant flexible pressure provided by the spiral spring, effectively maintaining the sharpness of the cutting edge while preventing excessive wear. With strict synchronization between the conveying mechanism and the cutting action, the entire system can maintain stable cutting accuracy and product consistency during long-term continuous operation, significantly reducing maintenance frequency and production costs. It is particularly suitable for high-load, high-quality continuous industrial production environments. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the cutting mechanism of the present invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0026] Figure 4 This is a schematic diagram of the cooling mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point C;

[0028] Figure 6 This is a schematic diagram of the conveying mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the compensation mechanism of the present invention;

[0030] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B.

[0031] In the diagram: 100, conveying mechanism; 101, base; 102, fixed platform; 103, long rod; 104, conveyor belt; 105, support plate; 106, motor; 107, round rod; 108, rolling roller; 109, second gear; 110, second sprocket; 111, chain; 200, cutting mechanism; 201, U-shaped rod; 202, rotating rod; 203, cam; 204, cross-shaped groove; 205, cross block; 206, horizontal plate; 207, cutter; 208, rack; 209, connecting plate; 210, rotating rod; 211, first gear; 212, wristband; 213, first sprocket; 214. 300. Communicating groove; 301. Cooling mechanism; 302. Circular plate; 303. Short rod; 304. Pull rod; 305. Piston; 306. Sealing cylinder; 307. Feeding pipe; 308. Discharge pipe; 309. U-shaped seat; 310. Rotatable block; 311. Baffle; 312. Liquid storage box; 313. Liquid delivery pipe; 400. Compensation mechanism; 401. Connecting rod; 402. Connecting frame; 403. Synchronous pulley; 404. Protruding disc; 405. Belt; 406. Hollow groove; 4061. T-shaped block; 407. Grinding block; 408. First circular seat; 409. Second circular seat; 410. Scroll spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1 and Figure 2 as well as Figure 3 As shown, an apparatus for producing flame-retardant polyester filament includes:

[0034] The conveying mechanism 100 is used to convey the flame-retardant polyester filaments to the cutting mechanism 200 for cutting.

[0035] A cutting mechanism 200, installed above the conveying mechanism 100, is used for adjustable cutting of the flame-retardant polyester filaments conveyed by the conveying mechanism 100. The cutting mechanism 200 includes a U-shaped rod 201, a rotating rod 202, and a cam 203. A cross-shaped groove 204 is formed inside the transverse end of the U-shaped rod 201. A cross block 205 is slidably connected within the cross-shaped groove 204. A horizontal plate 206 is fixedly connected to one side of the cross block 205, and a cutter 207 is fixedly connected to the bottom of the horizontal plate 206. The horizontal plate 206 moves on the U-shaped rod 201 via the cross block 205, changing the position between the cutter 207 and the flame-retardant polyester filaments. The U-shaped rod 201 rotates via the rotating rod 202 and the cam 203, causing the cutter 207 to move. 7. The blade moves up and down, thus achieving adjustable cutting of flame-retardant polyester filament; a rack 208 and a connecting plate 209 are fixedly connected to one side of the cross block 205 and the U rod 201, respectively. The top of the connecting plate 209 is rotatably connected to a rotating rod 210 through a bearing. The top and bottom of the rotating rod 210 are fixedly connected to the first gear 211 and the hand ring 212 through the connecting plate 209, respectively. The outer ring of the rotating rod 202 is fitted with a first sprocket 213; the cross blocks 205 are all slidably connected to the U rod 201 in the cross groove 204. The first gear 211 is meshed with the rack 208. The top of the cutter 207 and the bottom of the horizontal plate 206 are both provided with connecting grooves 214 to create communication.

[0036] Specifically, the rotating rod 202 is continuously rotated by power from the conveying mechanism, which in turn drives the cam 203 on it to rotate at high speed. The cam 203 is a mechanical element with a specific profile. When its protruding part rotates to contact the driven part of the U-rod 201, it will lift the U-rod 201, causing it to move upward. When the protruding part of the cam 203 rotates away, the U-rod 201 moves downward rapidly under its own gravity or the action of the reset device. This cycle repeats, and the continuous rotation of the cam 203 is converted into the high-intensity, high-frequency up-and-down reciprocating motion of the U-rod 201. The horizontal plate 206 slides into the cross-shaped groove 204 on the inner side of the U-rod 201 via the cross block 205. This cross-shaped fit ensures that the horizontal plate 206 and the cutter 207 can only move vertically along the axis of the U-rod 201 without rotation or loosening, thus ensuring the rigidity and stability of the cutting. Therefore, the up-and-down reciprocating motion of the U-rod 201 is transmitted to the horizontal plate 206 and the cutter 207 at its bottom without loss. At the moment the cutter 207 descends, its sharp blade acts with a huge impact force on the flame-retardant polyester filament that is passing by at a constant speed, instantly shearing it. The upward movement of the cutter 207 makes room for the next cut. When producing polyester filament segments of different lengths, there is no need to stop the machine to change molds or adjust the equipment layout. Simply adjust the lateral position of the cutter 207 relative to the polyester filament path and manually rotate the hand ring 212. The hand ring 212 drives the rotating rod 210 to rotate. The rotating rod 210 is mounted on the connecting plate 209 through bearings to ensure smooth rotation. The first gear 211 at the top of the rotating rod 210 rotates accordingly. The first gear 211 meshes with the rack 208 fixed on the side of the cross block 205, converting the rotational motion into gear motion. With 208 precise linear movements, the rack 208 drives the cross block 205 to slide laterally within the cross-shaped groove 204 of the U-bar 201. Since the cutter 207 is fixed to the cross block 205 through the horizontal plate 206, the entire cutting execution unit, including the cross block 205, the horizontal plate 206, and the cutter 207, moves laterally together. The drop point of the cutter 207 is precisely adjusted. For example, adjusting the cutter 207 forward in the conveying direction will result in a longer cut wire segment, while adjusting it backward will result in a shorter wire segment. This adjustment can be made while the equipment is running, realizing flexible manufacturing with uninterrupted production.

[0037] The cooling mechanism 300 is installed outside the conveying mechanism 100 to cool the cutter 207 during operation and prevent the blade from softening due to excessive temperature.

[0038] The compensation mechanism 400 is installed outside the conveying mechanism 100 and is used to intermittently grind both sides of the cutter 207 to compensate for cutting wear, so as to avoid excessive wear of the cutting edge of the cutter 207 due to continuous grinding.

[0039] like Figure 4 and Figure 5As shown, the cooling mechanism 300 includes a circular plate 301 fitted onto a rotating rod 202. A short rod 302 is fixedly connected to the front of the circular plate 301. A pull rod 303 is rotatably connected to one side of the short rod 302 via a bearing. A piston rod 304 is rotatably connected to the pull rod 303 via a bearing. A piston 305 is fixedly connected to one side of the piston rod 304. A sealing cylinder 306 is fitted around the outer ring of the piston 305. A material extraction pipe 307 and a material discharge pipe 308 are respectively fitted to the top and bottom of the sealing cylinder 306. Both the inner walls of the 07 and the discharge pipe 308 are provided with U-shaped seats 309; the inner cavities of the U-shaped seats 309 are rotatably connected to rotatable blocks 310 via bearings, and the bottom of the rotatable blocks 310 is fixedly connected with baffles 311; the bottom of the suction pipe 307 is fitted with a liquid storage box 312, the top of the liquid storage box 312 is provided with a liquid filling groove, and the inner cavity of the liquid filling groove is provided with a sealing cover; a liquid delivery pipe 313 is fitted between the top of the discharge pipe 308 and the bottom of the horizontal plate 206, and the liquid delivery pipe 313 is made of a flexible hose material.

[0040] Specifically, the rotating rod 202 drives the disc 301 to rotate. The eccentrically mounted short rod 302 is converted into a planar composite motion of the pull rod 303. The other end of the pull rod 303 is hinged to the piston rod 304 through a bearing, further converting the rotational motion into linear reciprocating motion of the piston rod 304 and the piston 305 within the sealing cylinder 306. The piston 305 moves backward, increasing the volume of the inner cavity of the sealing cylinder 306 and creating a negative pressure. At this time, the baffle 311 in the U-shaped seat 309 at the bottom of the extraction pipe 307 is pushed open by the external atmospheric pressure under the action of pressure difference and rotates around the rotatable block 310. Coolant is drawn from the storage box 312 into the inner cavity of the sealing cylinder 306. At the same time, the baffle 311 at the inlet of the discharge pipe 308 is subjected to its own weight and internal negative pressure. The bottom is tightly closed to prevent air from entering or liquid from flowing back. The piston 305 moves forward, compressing the coolant inside the sealing cylinder 306, causing a sudden increase in pressure. At this time, the baffle 311 at the suction pipe 307 is pressed shut to prevent liquid backflow, while the baffle 311 at the discharge pipe 308 is forced open by the high-pressure liquid, forcing the coolant out. The discharged high-pressure coolant enters the delivery pipe 313 through the discharge pipe 308. The delivery pipe 313 uses a flexible hose material such as Teflon or rubber, allowing it to bend and move with the moving cross plate 206 and cutter 207 without tangling or breaking. The coolant is finally sprayed directly and precisely onto the cutting edge area of ​​the cutter 207 through the connecting groove 214 at the top of the cross plate 206 and cutter 207. This targeted spraying ensures maximum cooling efficiency and minimal liquid consumption, thereby maintaining long-term stable operation of the equipment and reducing manual maintenance.

[0041] like Figure 7 and Figure 8As shown, the compensation mechanism 400 includes a connecting rod 401 and a connecting frame 402. The outer rings of the connecting rod 401 and the rotating rod 202 are fitted with synchronous pulleys 403 and cams 404. The two synchronous pulleys 403 are externally connected to belts 405. The connecting frame 402 has two hollow grooves 406. The inner cavities of the two hollow grooves 406 are provided with T-shaped blocks 4061. The tops of the two T-shaped blocks 4061 are fixedly connected with grinding blocks 407. The front sides of the two T-shaped blocks 4061 and the connecting frame 402 are respectively provided with a first round seat 408 and a second round seat 409. A spiral spring 410 is fitted between the outer rings of the first round seat 408 and the second round seat 409.

[0042] Specifically, a synchronous pulley 403 is mounted on the rotating rod 202. Power is transmitted to the synchronous pulley 403 on another connecting rod 401 via a belt 405. The belt 405 transmission ensures strict synchronization of the rotational speeds between the two shafts and also has a buffering and vibration-damping effect. On the connecting rod 401, a cam 404 rotates synchronously with the synchronous pulley 403. This is a non-circular cam-shaped structure. When the protruding part of the cam 404 rotates to the contact position with the T-block 4061, it pushes the T-block 4061 to connect... The grinding block 407 (usually an oilstone or diamond grinding block) on top of the T-block 4061 slides laterally within the hollow groove 406 of the frame 402, and then approaches the side edge of the cutter 207. A spiral spring 410 is provided between the T-block 4061 and the connecting frame 402. The spring is pre-compressed. When the cam 404 pushes the T-block 4061, the spiral spring 410 is further compressed, and its stored elastic potential energy is converted into a constant and gentle pressure on the grinding block 407, so that the grinding block 407 is closely attached to the beveled edge of the cutter 207 for grinding. This elastic pressure avoids damage to the cutting edge from rigid impacts, and the grinding amount is uniform and controllable. When the protruding part of the cam 404 rotates away, the pushing force on the T-block 4061 disappears. At this time, the compressed spiral spring 410 quickly releases its elastic potential energy, driving the T-block 4061 and the grinding block 407 to quickly retract and separate from the cutter 207. The profile of the cam 404 is designed to trigger a brief grinding action only when the cutter 207 is in a non-cutting state near the top dead center. This intermittent working mode realizes intelligent compensation of performing a micro-grinding once every N cuts, which not only maintains the sharpness of the cutting edge, but also minimizes the unnecessary consumption of the grinding block 407 and the cutter 207.

[0043] like Figure 1 and Figure 6As shown, the conveying mechanism 100 includes a base 101, a fixed platform 102 fixedly connected to the top of the base 101, two long rods 103 rotatably connected to the inner cavity of the fixed platform 102 via bearings, a conveyor belt 104 movably connected to the outside of the two long rods 103, a support plate 105 fixedly connected to the front of the fixed platform 102, a motor 106 provided on the front of the support plate 105, the output end of the motor 106 fixedly connected to one of the long rods 103, the fixed platform 102 rotatably connected to the connecting rod 401 via bearings, and fixedly connected to the connecting frame 402; a round rod 107 rotatably connected to the inner cavity of the fixed platform 102 via bearings, a rolling roller 108 fitted around the outer ring of one end of the round rod 107 located inside the fixed platform 102, a second gear 109 meshing with each other fitted around the outer rings of the round rod 107 and the long rod 103, a second sprocket 110 also fitted around the outside of the long rod 103, and a chain 111 movably connected to the outside of the second sprocket 110 and the first sprocket 213.

[0044] Specifically, when the motor 106 is started, its output shaft begins to rotate at a preset speed. The long rod 103, which is directly connected to the motor 106, also begins to rotate. Since the two long rods 103 are linked through the conveyor belt 104, the other long rod 103 also rotates synchronously. The conveyor belt 104 begins to circulate under the action of friction. The flame-retardant polyester filaments placed on the surface of the conveyor belt 104 make a precise linear feed motion with the conveyor belt 104. While the active long rod 103 rotates, the second sprocket 110, which is fixedly installed at its shaft end, rotates accordingly. The second sprocket 110 transmits power precisely to the first sprocket 213 of the cutting mechanism 200 through the chain 111. The first sprocket 213 is keyed to the rotating rod 202, thereby transmitting the rotational power from the conveying mechanism 100. The cutting mechanism 200 is transmitted without delay, ensuring strict synchronization between the cutting action and the conveying speed. A second gear 109 is also installed on one of the long rods 103, which meshes with another second gear 109 installed on the round rod 107. This meshing relationship transmits the rotation of the long rod 103 in the opposite or same direction, depending on the design, to the round rod 107. The rolling roller 108 installed on one end of the round rod 107 inside the fixed table 102 rotates accordingly, applying a slight clamping force to the polyester filament. This not only assists in the conveying but also prevents the lightweight or elastic flame-retardant polyester filament from jumping, deviating, or tangling due to high speed or vibration during the conveying process, ensuring that the filament always enters the cutting area in a straight and stable posture.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A manufacturing apparatus for flame retardant polyester yarns, characterized by, Include: Conveying mechanism (100) for conveying flame-retardant polyester yarn to cutting mechanism (200) for cutting; Cutting mechanism (200) is installed above conveying mechanism (100), used for adjustable cutting of flame-retardant polyester yarn conveyed by conveying mechanism (100), the cutting mechanism (200) includes U rod (201), rotating rod (202) cam (203), the cross-shaped slot (204) is formed in the cross-shaped slot (204) in the transverse end of the U rod (201), the cross-shaped slot (204) is slidably connected with cross block (205), one side of the cross block (205) is fixedly connected with horizontal plate (206), the bottom of the horizontal plate (206) is fixedly connected with cutter (207), the horizontal plate (206) moves on the U rod (201) through the cross block (205) to change the position between the cutter (207) and the flame-retardant polyester yarn, and the U rod (201) is rotated through the rotating rod (202) and the cam (203), so that the cutter (207) reciprocates up and down, so as to realize adjustable cutting of flame-retardant polyester yarn; Cooling mechanism (300) is installed outside the conveying mechanism (100), used for cooling cutter (207) during operation, to avoid high temperature of cutting edge softening due to high temperature; Compensation mechanism (400) is installed outside the conveying mechanism (100), used for intermittent polishing on both sides of the cutter (207) to compensate for cutting wear, to avoid excessive wear of the cutting edge of the cutter (207) due to continuous polishing.

2. A device for making flame retardant polyester yarn as claimed in claim 1, wherein: The cross block (205) and one side of the U rod (201) are fixedly connected with rack (208) and connecting plate (209) respectively, the top of the connecting plate (209) is rotatably connected with rotating rod (210) through bearing, the top and bottom of the rotating rod (210) are fixedly connected with first gear (211) and hand ring (212) penetrating the connecting plate (209) respectively, the outer ring of the rotating rod (202) is sleeved with first sprocket (213).

3. A device for making flame retardant polyester yarn as claimed in claim 2, wherein: The cross block (205) is connected with the U rod (201) by sliding in the cross-shaped slot (204), the first gear (211) is engaged with the rack (208), and the top of the cutter (207) and the bottom of the horizontal plate (206) are provided with a communication groove (214) in communication.

4. The apparatus for manufacturing flame retardant polyester yarn according to claim 3, wherein: The cooling mechanism (300) includes a disc (301) sleeved on the rotating rod (202), the front surface of the disc (301) is fixedly connected with a short rod (302), one side of the short rod (302) is rotatably connected with a pull rod (303) through a bearing, the pull rod (303) is rotatably connected with a piston rod (304) through a bearing, one side of the piston rod (304) is fixedly connected with a piston (305), the outer ring of the piston (305) is sleeved with a sealing cylinder (306), the top and bottom of the sealing cylinder (306) are sleeved with a material suction pipe (307) and a discharge pipe (308) respectively, the inner walls of the material suction pipe (307) and the discharge pipe (308) are provided with U-shaped seats (309).

5. A device for making flame retardant polyester yarn as claimed in claim 4, wherein: The inner cavities of the U-shaped seats (309) are rotationally connected with rotatable blocks (310) through bearings, the bottoms of the rotatable blocks (310) are fixedly connected with baffle plates (311), the bottom of the material drawing pipe (307) is sleeved with a liquid storage box (312), the top of the liquid storage box (312) is provided with a liquid filling groove, and the inner cavity of the liquid filling groove is provided with a sealing cover.

6. A device for making flame retardant polyester yarn as claimed in claim 5, wherein: The top of the material discharging pipe (308) and the bottom of the horizontal plate (206) are sleeved with a liquid conveying pipe (313) made of a flexible soft pipe material.

7. A device for making flame retardant polyester yarn as claimed in claim 1, wherein: The compensation mechanism (400) comprises a connecting rod (401) and a connecting frame (402), the outer rings of the connecting rod (401) and the rotating rod (202) are sleeved with synchronous pulleys (403) and convex plates (404), the outer parts of the two synchronous pulleys (403) are movably connected with a belt (405), the connecting frame (402) is provided with two hollow grooves (406), the inner cavities of the two hollow grooves (406) are provided with T-shaped blocks (4061), and the tops of the two T-shaped blocks (4061) are fixedly connected with grinding blocks (407).

8. A device for making flame retardant polyester yarn as claimed in claim 7, wherein: The front surfaces of the two T-shaped blocks (4061) and the connecting frame (402) are respectively provided with a first circular seat (408) and a second circular seat (409), and the outer rings of the first circular seat (408) and the second circular seat (409) are sleeved with spiral springs (410).

9. A device for making flame retardant polyester yarn as claimed in claim 1, wherein: The conveying mechanism (100) comprises a base (101), the top of the base (101) is fixedly connected with a fixed table (102), the inner cavity of the fixed table (102) is rotationally connected with two long rods (103) through bearings, the outer parts of the two long rods (103) are movably connected with a conveying belt (104), the front surface of the fixed table (102) is fixedly connected with a supporting plate (105), the front surface of the supporting plate (105) is provided with a motor (106), the output end of the motor (106) is fixedly connected with one of the long rods (103), the fixed table (102) is rotationally connected with the connecting rod (401) through a bearing and is fixedly connected with the connecting frame (402).

10. A device for making flame retardant polyester yarn as claimed in claim 9, wherein: The inner cavity of the fixed table (102) is rotationally connected with a circular rod (107) through a bearing, the outer ring of one end of the circular rod (107) inside the fixed table (102) is sleeved with a rolling roller (108), the outer rings of the circular rod (107) and the long rod (103) are sleeved with second gears (109) that are in mesh with each other, the outer part of the long rod (103) is further sleeved with a second sprocket (110), and the outer part of the second sprocket (110) and the first sprocket (213) are movably connected with a chain (111).

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