Precise metering feeding device for POY yarn production

Abstract

The utility model relates to POY silk production technical field, and disclose the accurate metering feeding device for POY silk production, including feeding frame, feed hopper, feeding cylinder and feeding drive mechanism, first POY silk raw materials are loaded into feed hopper when operating, the bottom end of feed hopper is installed in the placement groove of the top end of feeding frame, and is fixed through the threaded column passing through the support fixed washer ring bolt, and the stability is ensured, the bottom end of feed hopper is connected with feeding cylinder through feed inlet pipe, and the metering pump at the bottom can preliminarily meter raw materials, and the feeding cylinder is equipped with feeding spiral shaft and feeding spiral piece, and its end connects first bevel gear, and the front end passes through the support baffle of feeding frame, and the feeding drive mechanism contains transmission group and drive group, and the second bevel gear on the drive shaft is engaged with first bevel gear, and servo motor drives the drive shaft rotation through synchronous belt, after the device starts, the feeding spiral shaft rotates, and the feeding spiral piece pushes raw materials forward, and the metering pump continues to control the quantity, realizes the accurate feeding to the subsequent link.

Description

Technical Field

[0001] This utility model relates to the field of POY filament production technology, specifically to a precision metering and feeding device for POY filament production. Background Technology

[0002] POY yarn, or pre-oriented yarn, is an important intermediate product in chemical fiber production. Its production process involves multiple steps, including raw material melting, spinning, and cooling. A stable supply of raw materials is a key prerequisite for ensuring the quality of POY yarn. In the large-scale production of POY yarn, the stability of the raw material supply directly affects core process parameters such as spinning temperature and melt viscosity. If the raw material supply fluctuates, it can easily lead to quality problems such as uneven thickness and insufficient strength in the spun POY yarn. Therefore, a specialized feeding device is needed to achieve accurate metering and continuous delivery of raw materials to meet the strict requirements of process stability in POY yarn production.

[0003] Traditional POY filament production often employs manual or simple mechanical feeding methods. Manual feeding relies on the operator's experience to control the amount of raw materials fed, which is not only labor-intensive but also prone to fluctuations in raw material supply due to human error. Simple mechanical feeding devices lack precise metering structures and stable transmission systems, often resulting in blockages and supply interruptions during raw material transport. Furthermore, they are difficult to adjust the feeding speed flexibly according to production needs. These shortcomings not only lead to raw material waste and increased production costs but also frequently disrupt the POY filament production rhythm, resulting in decreased production efficiency. Therefore, we have proposed a precise metering feeding device for POY filament production. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a precise metering and feeding device for POY yarn production, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a precision metering and feeding device for POY yarn production, comprising:

[0006] The feeding rack, feeding hopper, and feeding cylinder are provided. The top of the feeding rack is provided with multiple feeding hoppers, the bottom of the feeding hoppers is provided with a feeding cylinder, the inside of the feeding cylinder is provided with a feeding screw shaft, the feeding screw shaft is provided with feeding screw blades, the feeding screw blades are provided inside the feeding cylinder, and the feeding cylinder is located inside the feeding rack.

[0007] The feeding drive mechanism is located inside the feeding rack. The feeding drive mechanism includes a transmission group and a drive group. The transmission group consists of a first bevel tooth and a second bevel tooth. The first bevel tooth and the second bevel tooth mesh with each other, and the first bevel tooth is connected to the end of the feeding screw shaft.

[0008] The drive unit consists of a drive shaft, a synchronous belt, and a servo motor. The second bevel gear is sleeved on the drive shaft, and one end of the drive shaft is connected to the output shaft of the servo motor via the synchronous belt.

[0009] Preferably, the top of the feeding rack has three equally spaced placement slots, and the outer side of the placement slots has multiple annularly distributed threaded posts, which are fixed to the top of the feeding rack.

[0010] Preferably, the bottom of the feeding rack has symmetrically distributed support legs on both sides, and the front end of the feeding rack has a support baffle, the two ends of which are fixedly connected to the support legs at the front end of the feeding rack.

[0011] Preferably, the bottom cylindrical surface of the feeding hopper is provided with a ring-shaped support and fixing pad, the bottom end of the feeding hopper is installed inside the placement groove, and the threaded post passes through the support and fixing pad and is fixedly connected by bolts. The bottom of the feeding hopper is provided with a metering pump, which is located inside the feeding frame.

[0012] Preferably, the top end of the feeding cylinder is provided with a feeding inlet pipe, which is perpendicular to the feeding cylinder. Both the top end of the feeding inlet pipe and the bottom end of the feeding hopper are provided with flange connecting plates. The feeding inlet pipe is located at the bottom end of the feeding hopper, and the two flange connecting plates are fixedly connected by bolts.

[0013] Preferably, the end of the feeding screw shaft passes through the end of the feeding cylinder and is connected to a first conical tooth, the first conical tooth being located at the end of the feeding cylinder, and the front end of the feeding cylinder passing through a support baffle.

[0014] Preferably, a drive shaft is installed on the support legs on both sides of the bottom back of the feeding rack. Three equally spaced second conical teeth are sleeved on the drive shaft. The second conical teeth correspond to and mesh with the first conical teeth respectively. A protective frame is snapped onto the back of the feeding rack. The inner side of the protective frame is provided with the first conical teeth, the second conical teeth and the drive shaft.

[0015] Preferably, a fixed platform is provided on one side of the feeding rack, a servo motor is installed on the top of the fixed platform, one end of the drive shaft extends to the outside through the support leg, and the output shaft of the servo motor is connected to the side of the drive shaft extending to the outside by a synchronous belt.

[0016] Compared with the prior art, this utility model provides a precise metering and feeding device for POY yarn production, which has the following beneficial effects:

[0017] This precision metering and feeding device for POY filament production allows operators to load POY filament raw materials into the feeding hopper. The hopper is then securely mounted on the feeding frame via a placement groove, threaded post, and supporting retaining ring. A support baffle passing through the front of the feeding cylinder effectively prevents component movement during loading and conveying, ensuring feeding stability. A metering pump at the bottom of the feeding hopper precisely measures the raw materials. Combined with the stable conveying by the feeding screw shaft and screw blades inside the feeding cylinder, this ensures a uniform amount of raw materials delivered to subsequent stages per unit time, significantly improving the raw material supply for POY filament production. Precision is improved, reducing raw material waste and production errors. The protective frame on the back of the feeding rack encloses the first and second bevel teeth and the drive shaft, preventing external impurities from interfering with the coordinated operation of the transmission and drive groups, avoiding equipment failure, and ensuring operator safety and reducing the risk of accidents. At the same time, the servo motor drives the drive shaft to rotate through the synchronous belt, and the meshing transmission of the first and second bevel teeth achieves efficient operation of the feeding screw shaft. Furthermore, the feeding hopper and feeding cylinder are easily assembled through the flange connection of the feeding inlet pipe, which improves the overall feeding efficiency and maintenance convenience of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the feeding rack structure of this utility model.

[0022] In the diagram: 1. Feeding rack; 2. Feeding hopper; 3. Metering pump; 4. Feeding cylinder; 5. Feeding screw shaft; 6. Feeding screw blade; 7. First bevel tooth; 8. Second bevel tooth; 9. Drive shaft; 10. Protective frame; 11. Synchronous belt; 12. Servo motor; 13. Support fixing washer; 14. Feeding inlet pipe; 15. Threaded column; 16. Placement slot; 17. Support baffle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 A precision metering and feeding device for POY yarn production includes:

[0025] The feeding frame 1, feeding hopper 2 and feeding cylinder 4 are provided. The top of the feeding frame 1 is provided with multiple feeding hoppers 2. The bottom of the feeding hopper 2 is provided with a feeding cylinder 4. The inside of the feeding cylinder 4 is provided with a feeding screw shaft 5. The feeding screw shaft 5 is provided with feeding screw blades 6. The feeding screw blades 6 are located inside the feeding cylinder 4. The feeding cylinder 4 is located on the inner side of the feeding frame 1.

[0026] The feeding drive mechanism is located inside the feeding rack 1. The feeding drive mechanism includes a transmission group and a drive group. The transmission group consists of a first bevel tooth 7 and a second bevel tooth 8. The first bevel tooth 7 and the second bevel tooth 8 mesh with each other, and the first bevel tooth 7 is connected to the end of the feeding screw shaft 5.

[0027] The drive assembly consists of a drive shaft 9, a synchronous belt 11, and a servo motor 12. The second bevel gear 8 is sleeved on the drive shaft 9, and one end of the drive shaft 9 is connected to the output shaft of the servo motor 12 through the synchronous belt 11.

[0028] Furthermore, the top of the feeding rack 1 is provided with three equidistant placement slots 16, and the outer side of the placement slots 16 is provided with multiple annularly distributed threaded posts 15. The threaded posts 15 are fixed to the top of the feeding rack 1, providing an installation positioning structure and a fixed foundation for the feeding hopper 2. The installation position of the feeding hopper 2 is determined by the three equidistant placement slots 16, and the multiple annularly distributed threaded posts 15 provide connection points for the subsequent fixing of the feeding hopper 2. This ensures that the feeding hopper 2 can be installed on the feeding rack 1 in an orderly and stable manner, and avoids positional deviation of the feeding hopper 2 during installation.

[0029] Furthermore, the bottom of the feeding rack 1 is provided with symmetrically distributed support legs on both sides, and the front end of the feeding rack 1 is provided with a support baffle 17. The two ends of the support baffle 17 are fixedly connected to the support legs at the front end of the feeding rack 1, which enhances the overall structural stability of the feeding rack 1 and provides front-end support for the feeding cylinder 4. The symmetrically distributed support legs can evenly bear the weight of the feeding rack 1 and the upper components, and the support baffle 17 is fixed to the support legs to form an additional support structure. This makes the feeding rack 1 less prone to shaking during the operation of the device, and at the same time provides stable support for the front end of the feeding cylinder 4, preventing the feeding cylinder 4 from tilting due to its own weight or the pressure of the raw material conveying.

[0030] Furthermore, the bottom cylindrical surface of the feeding hopper 2 is provided with a ring-shaped support and fixing pad 13. The bottom end of the feeding hopper 2 is installed inside the placement groove 16, and the threaded post 15 passes through the support and fixing pad 13 and is fixedly connected by bolts. A metering pump 3 is provided at the bottom of the feeding hopper 2. The metering pump 3 is located inside the feeding frame 1 to achieve stable fixation of the feeding hopper 2 on the feeding frame 1 and to give the device the function of preliminary metering of raw materials. The support and fixing pad 13 and the threaded post 15 are fixed by bolts to ensure that the feeding hopper 2 is installed firmly. The metering pump 3 is located at the bottom of the feeding hopper 2 to meter the flowing raw materials. This prevents the feeding hopper 2 from shaking or shifting when filling or conveying raw materials. At the same time, the metering pump 3 is used to initially control the amount of raw materials conveyed.

[0031] Furthermore, a feeding inlet pipe 14 is provided at the top end of the feeding cylinder 4. The feeding inlet pipe 14 is perpendicular to the feeding cylinder 4. Both the top end of the feeding inlet pipe 14 and the bottom end of the feeding hopper 2 are provided with flange connecting plates. The feeding inlet pipe 14 is located at the bottom end of the feeding hopper 2. The two flange connecting plates are fixedly connected by bolts to establish a raw material conveying channel between the feeding hopper 2 and the feeding cylinder 4, and to ensure the sealing and stability of the connection. The feeding inlet pipe 14 is vertically located at the top end of the feeding cylinder 4 and is fixed to the bottom end of the feeding hopper 2 by bolts through the flange connecting plates. This allows the raw material in the feeding hopper 2 to flow smoothly and leak-free into the feeding cylinder 4, avoiding the spillage of raw material during the conveying process and causing waste. At the same time, the flange connection facilitates subsequent disassembly and maintenance.

[0032] Furthermore, the end of the feeding screw shaft 5 passes through the end of the feeding cylinder 4 and is connected to a first conical tooth 7. The first conical tooth 7 is located at the end of the feeding cylinder 4, and the front end of the feeding cylinder 4 passes through the support baffle 17 to provide a power connection interface for the feeding screw shaft 5 and further enhance the installation stability of the feeding cylinder 4. The connection of the first conical tooth 7 to the end of the feeding screw shaft 5 facilitates cooperation with the transmission assembly to obtain power, while the front end of the feeding cylinder 4 passing through the support baffle 17 further fixes its position. This ensures that the feeding screw shaft 5 can receive power through the first conical tooth 7 to achieve rotation, while also ensuring that both the front and rear ends of the feeding cylinder 4 are effectively supported, thereby improving its structural stability during the raw material conveying process.

[0033] Furthermore, a drive shaft 9 is installed on the support legs on both sides of the bottom back of the feed rack 1. Three equally spaced second bevel teeth 8 are sleeved on the drive shaft 9. The second bevel teeth 8 correspond to and mesh with the first bevel teeth 7 respectively. A protective frame 10 is snapped onto the back of the feed rack 1. The inner side of the protective frame 10 is provided with the first bevel teeth 7, the second bevel teeth 8 and the drive shaft 9, which constitutes the power transmission structure between the transmission group and the drive group and protects the transmission components. The second bevel teeth 8 on the drive shaft 9 mesh with the first bevel teeth 7 to realize power transmission. The protective frame 10 wraps around the transmission components to provide protection. This ensures that the power can be effectively transmitted from the drive shaft 9 to the feed screw shaft 5, while preventing external impurities from entering the transmission components and affecting the meshing accuracy, avoiding transmission failure, and ensuring the safety of the operator.

[0034] Furthermore, a fixed platform is provided on one side of the feeding rack 1, and a servo motor 12 is installed on the top of the fixed platform. One end of the drive shaft 9 extends to the outside through the support leg, and the output shaft of the servo motor 12 is connected to the side of the drive shaft 9 that extends to the outside through a synchronous belt 11, providing a power source for the device and realizing the effective transmission of power to the drive shaft 9. The servo motor 12 is installed on the fixed platform to ensure stable operation, and the power is transmitted to the drive shaft 9 through the synchronous belt 11. It provides stable and controllable power to the drive shaft 9, enabling the drive shaft 9 to drive the second bevel gear 8 to rotate stably, thereby ensuring the stable speed of the feeding screw shaft 5 and providing power guarantee for the uniform conveying of raw materials.

[0035] Structural Description:

[0036] Feed rack 1: It is the basic support structure of the device. It has three equidistant placement slots 16 and annular threaded column 15 at the top, symmetrical support legs on both sides at the bottom, and a support baffle 17 at the front end for installing and fixing components such as feed hopper 2 and feed cylinder 4 to ensure the stability of the overall structure.

[0037] Feeding hopper 2: It is a raw material storage component. The bottom cylindrical surface has a supporting and fixing pad ring 13. The bottom end is installed in the placement slot 16 of the feeding rack 1 and fixed by the threaded column 15. The bottom is connected to the metering pump 3 and the feeding cylinder 4 to realize raw material storage and preliminary quantity control.

[0038] Metering pump 3: JN series spinning pump is used and installed at the bottom of feeding hopper 2 and inside feeding rack 1. It is a raw material metering structure that can measure the raw material flowing out of feeding hopper 2, control the conveying volume, provide a guarantee for accurate feeding, and reduce raw material waste and production errors.

[0039] Feeding cylinder 4: It is a raw material conveying channel, located inside the feeding frame 1. It has a vertical feeding inlet pipe 14 at the top end and a support baffle 17 at the front end. It has a feeding screw shaft 5 inside and is connected to the feeding hopper 2 through a flange to achieve stable conveying of raw materials.

[0040] Feeding screw shaft 5: Located inside the feeding cylinder 4, with its end passing through the feeding cylinder 4 and connected to the first bevel tooth 7. The shaft is equipped with feeding screw blades 6, which receive the power transmitted by the first bevel tooth 7 to rotate and drive the feeding screw blades 6 to push the raw material to move. It is the core component of the conveying system.

[0041] Feeding spiral blade 6: Fixed on the feeding spiral shaft 5, located inside the feeding cylinder 4, it rotates with the feeding spiral shaft 5 and can smoothly push the raw material in the feeding cylinder 4 to the front end, ensuring uniform material delivery, and working with the metering pump 3 to improve the feeding accuracy.

[0042] First bevel tooth 7: Connected to the end of the feeding screw shaft 5 and the end of the feeding cylinder 4, it meshes with the second bevel tooth 8 and is a power transmission component, transmitting the power of the second bevel tooth 8 to the feeding screw shaft 5, so that the feeding screw shaft 5 obtains rotational power;

[0043] The second bevel tooth 8 is sleeved on the drive shaft 9, with three equidistantly distributed, and meshes with the corresponding first bevel tooth 7. It is a key component of the transmission group. After receiving the power from the drive shaft 9, it transmits the power to the first bevel tooth 7 through meshing, thus realizing power transmission.

[0044] Drive shaft 9: Installed on the support leg at the bottom back of the feed rack 1, one end of which passes through the support leg and is connected to the timing belt 11. Three second bevel teeth 8 are fitted on it, receiving power from the servo motor 12 and driving the second bevel teeth 8 to rotate, thus providing power to the transmission group.

[0045] Protective frame 10: It is snapped onto the back of the feed rack 1, and the inner side wraps the first bevel tooth 7, the second bevel tooth 8 and the drive shaft 9. It is a protective structure to prevent external impurities from interfering with the transmission components, avoid malfunctions, and ensure the safety of operators.

[0046] Synchronous belt 11: Connects the output shaft of servo motor 12 to the extension end of drive shaft 9. It is a power transmission link that smoothly transmits the power of servo motor 12 to drive shaft 9, ensuring the stable speed of drive shaft 9.

[0047] Servo motor 12: Installed on the top of the fixed platform on one side of the feeding rack 1, it is the power source of the device. It transmits stable and controllable power to the drive shaft 9 through the synchronous belt 11, ensuring the stable speed of the feeding screw shaft 5 and realizing the uniform conveying of raw materials.

[0048] Support and fixing pad ring 13: It is in the shape of a ring and is located on the cylindrical surface at the bottom of the feeding hopper 2. The threaded post 15 passes through it and is used with bolts to fix the feeding hopper 2, thereby enhancing the installation firmness of the feeding hopper 2 and preventing it from shaking and shifting during raw material filling and conveying.

[0049] Feed inlet pipe 14: It is vertically installed at the top of the end of the feed cylinder 4, with flange connecting plates at both ends. The top end is connected to the bottom end of the feed hopper 2 and fixed by bolts to establish a raw material conveying channel, ensuring that the raw material flows into the feed cylinder 4 without leakage, and is easy to disassemble and maintain.

[0050] Threaded column 15: Fixed at the top of the feeding rack 1 and outside the placement groove 16, it is distributed in a ring. After passing through the support fixing pad ring 13, it is fixed with bolts to provide a fixed connection point for the feeding hopper 2, ensuring that the feeding hopper 2 is installed firmly and in a precise position.

[0051] Placement slot 16: It is set at the top of the feeding rack 1, with three equally spaced slots, for the bottom of the feeding hopper 2 to be installed, providing installation positioning for the feeding hopper 2, avoiding the installation position of the feeding hopper 2 being offset, and ensuring that the feeding hopper 2 and the feeding cylinder 4 are accurately connected.

[0052] Support baffle 17: Both ends are connected to the front support legs of the feeding frame 1, and the front end of the feeding cylinder 4 passes through it. This not only enhances the stability of the feeding frame 1, but also provides support for the front end of the feeding cylinder 4, preventing the feeding cylinder 4 from tilting due to weight or pressure, and ensuring stable conveying.

[0053] Working Principle: First, raw material is loaded. The operator loads POY yarn into the feeding hopper 2. The feeding hopper 2 serves as the initial storage component for the raw material. Its installation and fixation rely on the structural support of the feeding frame 1. The top of the feeding frame 1 has three equidistantly distributed placement slots 16. The bottom of the feeding hopper 2 is installed correspondingly inside the placement slots 16. Simultaneously, the annular support and fixing pad 13 on the cylindrical surface at the bottom of the feeding hopper 2 is passed through by multiple annularly distributed threaded posts 15 on the outer side of the placement slots 16 at the top of the feeding frame 1, and then fixed with bolts. This ensures the stability of the feeding hopper 2 on the feeding frame 1, preventing the feeding stability from being affected by shaking after loading. The raw material is stored in the feeding hopper. After hopper 2, the material needs to enter the subsequent conveying stage. The bottom end of hopper 2 is connected to the feeding cylinder 4 through the feeding inlet pipe 14. The feeding inlet pipe 14 is perpendicular to the feeding cylinder 4, and both its top and the bottom end of hopper 2 are equipped with flange connecting plates. The two flange connecting plates are fixed with bolts, allowing the raw material in hopper 2 to smoothly enter the feeding cylinder 4 through the feeding inlet pipe 14. At the same time, the metering pump 3 installed at the bottom of hopper 2 will perform preliminary metering of the raw material before it enters the feeding cylinder 4. The metering pump 3 is located inside the feeding frame 1, forming a continuous feeding path with hopper 2 and feeding cylinder 4. The feeding cylinder 4 serves as the raw material conveying channel, and its interior is equipped with... The feeding screw shaft 5 and feeding screw blades 6 are the core components for conveying raw materials. The end of the feeding screw shaft 5 passes through the end of the feeding cylinder 4 and is connected to a first bevel tooth 7, which is located at the end of the feeding cylinder 4. The front end of the feeding cylinder 4 passes through the support baffle 17 at the front end of the feeding frame 1. The two ends of the support baffle 17 are fixedly connected to the support legs at the front end of the feeding frame 1, further enhancing the stability of the feeding cylinder 4 after installation. The conveying power of the raw material in the feeding cylinder 4 comes from the feeding drive mechanism, which consists of a transmission group and a drive group. The transmission group consists of the first bevel tooth 7 and the second bevel tooth 8. The drive shaft 9 is installed on the support legs on both sides of the back of the bottom end of the feeding frame 1. Three equally spaced second bevel teeth 8 are fitted on the feeder 1, and the second bevel teeth 8 respectively mesh with the first bevel teeth 7 on the corresponding feed cylinder 4, forming a key connection point for power transmission; at the same time, a protective frame 10 is snapped onto the back of the feeder 1, which encloses the first bevel teeth 7, the second bevel teeth 8 and the drive shaft 9, playing a protective role, avoiding external impurities from interfering with the transmission process, and also ensuring operational safety. The power source of the drive group is a servo motor 12. A fixed platform is provided on one side of the feeder 1, and the servo motor 12 is installed on the top of the fixed platform. One end of the drive shaft 9 extends to the outside through the support leg, and the output shaft of the servo motor 12 is connected to the side of the drive shaft 9 that extends to the outside through a synchronous belt 11.When the device is started, the servo motor 12 operates, driving the drive shaft 9 to rotate via the synchronous belt 11. The drive shaft 9 then drives the second bevel gear 8 to rotate, which in turn drives the first bevel gear 7 to rotate through meshing. The first bevel gear 7 then drives the feeding screw shaft 5 to rotate inside the feeding cylinder 4. When the feeding screw shaft 5 rotates, the feeding screw blades 6 on its surface push the POY filament raw material in the feeding cylinder 4 towards the front end of the feeding cylinder 4. During this process, the metering pump 3 at the bottom of the feeding hopper 2 continuously and precisely controls the raw material flow rate, ensuring that the amount of raw material delivered to the subsequent POY filament production stage remains stable per unit time, ultimately achieving precise metering and feeding.

[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision metering and feeding device for POY yarn production, characterized in that, include: The feeding rack (1), feeding hopper (2) and feeding cylinder (4) are provided. The top of the feeding rack (1) is provided with multiple feeding hoppers (2), and the bottom of the feeding hopper (2) is provided with a feeding cylinder (4). The inside of the feeding cylinder (4) is provided with a feeding screw shaft (5), and a feeding screw blade (6) is provided on the feeding screw shaft (5). The feeding screw blade (6) is provided inside the feeding cylinder (4), and the feeding cylinder (4) is provided on the inner side of the feeding rack (1). The feeding drive mechanism is set inside the feeding rack (1). The feeding drive mechanism includes a transmission group and a drive group. The transmission group consists of a first bevel tooth (7) and a second bevel tooth (8). The first bevel tooth (7) and the second bevel tooth (8) mesh with each other, and the first bevel tooth (7) is connected to the end of the feeding screw shaft (5). The drive unit consists of a drive shaft (9), a synchronous belt (11) and a servo motor (12). The second bevel tooth (8) is sleeved on the drive shaft (9). One end of the drive shaft (9) is connected to the output shaft of the servo motor (12) through the synchronous belt (11).

2. The precision metering and feeding device for POY yarn production according to claim 1, characterized in that, The top of the feeding rack (1) has three equally spaced placement slots (16), and the outside of the placement slots (16) has multiple annularly distributed threaded posts (15), which are fixed to the top of the feeding rack (1).

3. The precision metering and feeding device for POY yarn production according to claim 1, characterized in that, The bottom of the feeding rack (1) is provided with symmetrically distributed support legs on both sides, and the front end of the feeding rack (1) is provided with a support baffle (17), the two ends of the support baffle (17) being fixedly connected to the support legs at the front end of the feeding rack (1).

4. The precision metering and feeding device for POY yarn production according to claim 1, characterized in that, The bottom cylindrical surface of the feeding hopper (2) is provided with a ring-shaped support and fixing pad (13). The bottom end of the feeding hopper (2) is installed inside the placement groove (16), and the threaded column (15) passes through the support and fixing pad (13) and is fixedly connected by bolts. The bottom of the feeding hopper (2) is provided with a metering pump (3), which is located inside the feeding rack (1).

5. The precision metering and feeding device for POY yarn production according to claim 1, characterized in that, The top end of the feeding cylinder (4) is provided with a feeding inlet pipe (14), which is perpendicular to the feeding cylinder (4). The top end of the feeding inlet pipe (14) and the bottom end of the feeding hopper (2) are both provided with flange connecting plates. The feeding inlet pipe (14) is located at the bottom end of the feeding hopper (2), and the two flange connecting plates are fixedly connected by bolts.

6. The precision metering and feeding device for POY yarn production according to claim 1, characterized in that, The end of the feeding screw shaft (5) passes through the end of the feeding cylinder (4) and is connected to a first conical tooth (7). The first conical tooth (7) is located at the end of the feeding cylinder (4), and the front end of the feeding cylinder (4) passes through the support baffle (17).

7. The precision metering and feeding device for POY yarn production according to claim 6, characterized in that, The feeder (1) has a drive shaft (9) installed on the support legs on both sides of the bottom back. The drive shaft (9) is fitted with three equally spaced second bevel teeth (8). The second bevel teeth (8) correspond to and mesh with the first bevel teeth (7). The back of the feeder (1) is fitted with a protective frame (10). The inner side of the protective frame (10) is provided with the first bevel teeth (7), the second bevel teeth (8) and the drive shaft (9).

8. The precision metering and feeding device for POY yarn production according to claim 7, characterized in that, The feeding rack (1) has a fixed platform on one side, and a servo motor (12) is installed on the top of the fixed platform. One end of the drive shaft (9) extends to the outside through the support leg, and the output shaft of the servo motor (12) is connected to the side of the drive shaft (9) extending to the outside through a synchronous belt (11).

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