A splash-proof automatic metering, weighing and feeding system

Abstract

The present application relates to the technical field of annular load conveying, and specifically discloses a splash-proof automatic metering and weighing feeding system, which includes a processing table, a first conveyor belt, a second conveyor belt, a feeding mechanism, a cutting mechanism, and a weighing mechanism. The cutting mechanism includes a mounting frame, a cutting knife, and a lifting assembly. An electrostatic detection assembly for detecting the static electricity on the cutting knife, an electrostatic neutralization assembly for neutralizing the static electricity on the cutting knife, and a blowing assembly for blowing the ions generated by the electrostatic neutralization assembly towards the cutting knife are further arranged on the mounting frame. Driven by the lifting assembly, the electrostatic detection assembly detects the static electricity on the lifting cutting knife, and the lifting assembly drives the blowing assembly to blow the ions generated by the electrostatic neutralization assembly towards the cutting knife, so that the ions contact the cutting knife, realizing the removal of the static electricity on the cutting knife. Even if there is no static electricity on the cutting knife, the force generated by the wind can also be used to separate the polypropylene staple fiber adhering to the cutting knife from the cutting knife.

Description

Technical Field

[0001] This application relates to the technical field of annular load conveying, and particularly to a splash-proof automatic metering and weighing feeding system. Background Art

[0002] As an important part of modern industrial automation production lines, conveyor belts are widely used in the conveying of various materials. Such equipment is usually composed of a loop-running belt material and can continuously or intermittently transport materials from one location to another. The design of the conveyor belt aims to improve production efficiency, reduce manual handling costs, and ensure the smooth flow of materials on the production line. Whether in heavy industry, light industry, or the food processing industry, conveyor belts play an indispensable role and have become an essential part of modern production processes.

[0003] Taking the production and processing of polypropylene fibers as an example, in this process, the conveyor belt plays a crucial role. Polypropylene fibers, as an important synthetic fiber, are widely used in multiple fields such as textiles, packaging, and medical. In its production and processing process, first, the strip-shaped polypropylene fibers need to be smoothly conveyed to the next process through the conveyor belt. Subsequently, through the precise cutting of the cutting device, the continuous polypropylene fibers are cut into polypropylene staple fibers of a specific length. This step is crucial for the subsequent product quality and packaging process. After cutting, the polypropylene staple fibers will be evenly weighed to ensure that each batch of products meets the established weight standards, facilitating subsequent packaging and packing operations.

[0004] However, in the cutting process of polypropylene fibers, an issue that cannot be ignored is the generation of static electricity and the adhesion of materials. Due to the low conductivity and high resistivity of polypropylene fibers themselves, static electricity is easily generated during the cutting process due to factors such as friction and collision. Static electricity will not only cause the splashing and adhesion of polypropylene staple fibers, affecting the cutting effect and production efficiency. Even in the absence of static electricity, adhesion may occur during the cutting process due to the stickiness of the fibers. These problems will lead to unnecessary cutting of polypropylene staple fibers multiple times, ultimately resulting in the length and size of the products not meeting the production requirements, seriously affecting product quality and production efficiency. Therefore, solving this problem has become the key to improving the production and processing quality of polypropylene fibers. Summary of the Invention

[0005] In order to significantly reduce the possibility of splashing and adhesion of polypropylene fibers during the cutting process, this application provides a splash-proof automatic metering and weighing feeding system.

[0006] A splash-proof automatic metering and weighing feeding system provided by this application adopts the following technical solutions:

[0007] A splash-proof automatic metering and weighing feeding system, including a processing table, on which a first conveyor belt and a second conveyor belt for transporting polypropylene fibers are respectively arranged, and a feeding mechanism for feeding polypropylene fibers is arranged on the processing table. The first conveyor belt is used for transporting the short polypropylene fibers fed by the feeding mechanism;

[0008] A cutting mechanism for cutting the strip-shaped polypropylene fibers is further arranged on the processing table. A feeding channel is arranged at the discharging end of the first conveyor belt, and the lower end of the feeding channel is directly opposite to the second conveyor belt. A weighing mechanism for evenly weighing the short polypropylene fibers after feeding is arranged on the second conveyor belt;

[0009] The cutting mechanism includes a mounting frame, a cutting knife arranged on the mounting frame, and a lifting assembly for driving the cutting knife to lift along the height direction of the mounting frame. The following are also arranged on the mounting frame:

[0010] An electrostatic detection component for detecting the static electricity of the cutting knife during cutting;

[0011] An electrostatic neutralization component for neutralizing the static electricity of the cutting knife after cutting;

[0012] A blowing component for blowing the ions generated by the electrostatic neutralization component towards the cutting knife when the cutting knife rises.

[0013] By adopting the above technical solution, when the short polypropylene fibers need to be cut, the coiled strip-shaped polypropylene fibers are transported by the feeding mechanism, and then the cutting knife is driven by the lifting assembly to cut the polypropylene fibers, so that the strip-shaped polypropylene fibers are cut into short polypropylene fibers;

[0014] Driven by the lifting assembly, the cutting knife rises and falls along the mounting frame. At this time, the electrostatic detection component detects the static electricity on the cutting knife. During this process, the lifting assembly drives the blowing component to blow the ions generated by the electrostatic neutralization component towards the cutting knife, so that the ions contact the cutting knife and contact the ions with opposite charges on the cutting knife, realizing the removal of the static electricity on the cutting knife;

[0015] The blown air can blow the short polypropylene fibers attached to the cutting knife. Even if there is no static electricity on the cutting knife, the force generated by the air can also separate the short polypropylene fibers adhered to the cutting knife from the cutting knife.

[0016] On the one hand, the static electricity in the cutting area is eliminated, making it difficult for the polypropylene staple fibers to adhere to the cutting blade due to static electricity, significantly reducing the splashing generated during the cutting of the polypropylene staple fibers. On the other hand, the blown air can blow off the polypropylene staple fibers adhering to the cutting blade due to pressing, thereby reducing the splashing and adhesion of the polypropylene staple fibers during the cutting process, reducing the secondary cutting of the polypropylene staple fibers, making the length and size of the cut polypropylene staple fibers meet the production requirements, and improving the product quality.

[0017] Optionally, the static electricity detection component includes two groups of static electricity detectors installed on the mounting frame and located on both sides of the first conveyor belt, and a controller electrically connected to the two static electricity detectors. The static electricity neutralization component and the lifting component are both electrically connected to the controller.

[0018] By adopting the above technical solution, after the cutting blade cuts the polypropylene fiber, at this time, the static electricity detector will detect the static electricity on the cutting blade, detect the magnitude of the static electricity, and transmit the data to the controller. The controller controls the static electricity neutralization component to spray ions, and the ions with opposite charges neutralize the static electricity, thereby removing the static electricity on the cutting blade, causing the polypropylene staple fibers adhering to the end of the cutting blade due to the static electricity generated during the cutting process to fall off from the end of the cutting blade. The polypropylene staple fibers falling on the first conveyor belt are conveyed by the first conveyor belt to outside the cutting station, avoiding the secondary cutting of the polypropylene staple fibers adhering to the cutting blade.

[0019] Optionally, the static electricity neutralization component includes two groups of ion generators arranged on the mounting frame and located on both sides of the first conveyor belt. The blowing component is provided with two groups corresponding to the two ion generators, and the two blowing components can blow the ions generated by the ion generators towards the end of the cutting blade.

[0020] By adopting the above technical solution, when the lifting component drives the cutting blade to move close to the static electricity neutralization component, the controller controls the two ion generators to generate ions. At the same time, when the lifting component moves up and down, it will automatically drive the blowing component to blow the ions, so that the ions can disperse onto the cutting blade and neutralize the static electricity on the cutting blade, thereby removing the static electricity on the cutting blade.

[0021] Optionally, the blowing component includes a piston cylinder, a piston plate, a connecting rod, an air inlet pipe, and an air outlet pipe. The piston cylinder is fixed to the side wall of the mounting frame, and the upper end of the piston cylinder is closed and the lower end is open. The piston plate is slidably and sealingly installed in the piston cylinder. One end of the connecting rod penetrates through the top of the piston cylinder and is fixedly connected to the piston plate. The connection between the connecting rod and the piston cylinder remains slidably sealed. The end of the connecting rod away from the piston plate is fixedly connected to the lifting part of the lifting component;

[0022] The intake pipe and the exhaust pipe are respectively communicated with the cavity of the piston cylinder above the piston plate. One-way valves for restricting the unidirectional flow of air are provided in both the intake pipe and the exhaust pipe, and the setting direction of the one-way valve is the same as the air flow direction in the intake pipe and the exhaust pipe;

[0023] A filter assembly for filtering the air entering the intake pipe and reducing the generation of static electricity is communicatedly provided on the intake pipe;

[0024] A gas guide cover is provided at the end of the exhaust pipe. A plurality of gas guide holes are opened on the gas guide cover, and each gas guide hole can blow the ions generated by the ion generator towards the cutting knife.

[0025] By adopting the above technical solution, when the lifting assembly drives the cutting knife to rise, the connecting rod will be driven to rise. The connecting rod drives the piston plate to compress the air in the upper cavity of the piston cylinder, increasing the air pressure in the upper cavity of the piston cylinder. At this time, the air in the upper cavity of the piston cylinder is blown out through the exhaust pipe, and through the guiding effect of the air guide cover on the air, the ions generated by the ion generator are blown, enabling the ions to float towards the cutting knife, thereby removing the static electricity on the cutting knife.

[0026] Optionally, the filter assembly includes a liquid storage tank and a gas guide pipe provided on the liquid storage tank. The liquid storage tank is filled with pure water. One end of the intake pipe is communicated with the cavity above the pure water in the liquid storage tank, one end of the gas guide pipe is inserted into the pure water, and the other end extends out of the liquid storage tank.

[0027] By adopting the above technical solution, when the connecting rod drives the piston plate to move away from the top of the piston cylinder, the air pressure in the upper cavity of the piston cylinder decreases at this time. Therefore, the external air enters the liquid storage tank through the gas guide pipe. The air entering through the gas guide pipe will first come into full contact with the pure water, thereby removing dust and other impurities in the air, preventing dust and other impurities in the air from being sprayed onto the cutting knife, causing pollution to the cutting knife and the polypropylene fiber, and the impurities may increase the friction between the cutting knife and the polypropylene fiber during the cutting process, resulting in more static electricity generation. On the other hand, the air after passing through the pure water contains a certain amount of moisture, and the moisture can be blown out through the exhaust pipe and the air guide cover, thereby increasing the environmental humidity around the cutting knife, further reducing the generation of static electricity.

[0028] Optionally, the lifting assembly includes a driving member, a bidirectional threaded rod, a guiding cylinder, and a limiting cylinder. The driving member is installed on the top of the mounting frame. The bidirectional threaded rod is coaxially fixed to the output end of the driving member. The guiding cylinder is slidably sleeved on the bidirectional threaded rod. The top of the cutting knife is fixedly connected to the lower end of the guiding cylinder, and a plug rod that is inserted and adapted to the thread on the bidirectional threaded rod is fixed on the inner wall of the guiding cylinder;

[0029] The limiting cylinder is fixed to the top of the mounting frame and is slidably sleeved outside the guiding cylinder. A rotational limiting structure is provided between the limiting cylinder and the guiding cylinder for restricting the free rotation of the guiding cylinder.

[0030] By adopting the above technical solution, when the driving member operates, it drives the bidirectional threaded rod to rotate. Under the limitation of the insertion rod and the rotational limiting structure, the guiding cylinder can drive the cutter to move up and down, thereby realizing the cutting of polypropylene fibers.

[0031] Optionally, a sliding sleeve is slidably sleeved outside the cutter. A first elastic member is provided between the sliding sleeve and the cutter for enabling the sliding sleeve to move upward along the cutter. A push rod is provided at the top of the mounting frame for pushing against the sliding sleeve so that the lower end of the sliding sleeve wraps the end of the cutter.

[0032] Two groups of scraping assemblies for scraping the tip and side wall of the cutter are symmetrically arranged on the inner wall of the sliding sleeve near the lower end.

[0033] By adopting the above technical solution, when the guiding cylinder drives the cutter to cut polypropylene fibers, the first elastic member will drive the sliding sleeve to move upward, causing the end of the cutter to extend out of the sliding sleeve. At this time, the cutter can normally cut the polypropylene fibers.

[0034] When the guiding cylinder drives the cutter to rise, the push rod pushes the sliding sleeve, so that the lower end of the sliding sleeve wraps the cutter. During this process, the scraping assemblies can scrape the side wall and the end inclined surface of the cutter, thereby removing the polypropylene short fibers adhering to the cutter.

[0035] Optionally, the scraping assembly includes a pushing block slidably mounted on the inner wall of the sliding sleeve and a second elastic member for driving the pushing block to move towards the side wall of the cutter. A part of the surface of the pushing block close to the side wall of the cutter is set as a wedge-shaped inclined surface adapted to the inclined surface of the tip of the cutter, and a part is set as an end surface adapted to the side wall of the cutter.

[0036] An applying assembly for applying an antistatic agent to the inclined surface of the tip of the cutter and the side wall of the cutter is arranged in the pushing block.

[0037] By adopting the above technical solution, when the push rod drags the sliding sleeve to wrap the cutter, the second elastic member pushes the pushing block, so that the pushing block elastically abuts against the side wall and the inclined surface of the tip of the cutter. At this time, the applying assembly in the pushing block automatically applies an antistatic agent to the side wall and the inclined surface of the tip of the cutter, thereby making it less likely for static electricity to be generated on the surface of the cutter, further reducing the possibility of polypropylene short fibers adhering to the cutter due to static electricity, and improving the quality of the polypropylene short fibers after cutting.

[0038] Optionally, the smearing component includes a liquid storage chamber opened in the pushing block and a plurality of liquid delivery channels penetrating through the wedge-shaped inclined surface and the end surface of the pushing block. Each of the liquid delivery channels presents liquid delivery holes spaced apart on the wedge-shaped inclined surface and the end surface of the pushing block.

[0039] The liquid storage chamber is filled with an antistatic agent. Capillaries for delivering the antistatic agent in the liquid storage chamber to the wedge-shaped inclined surface and the end surface of the pushing block are arranged in each of the liquid delivery channels, and balls for hindering the continuous outflow of the antistatic agent are arranged at positions of the liquid delivery channels close to the wedge-shaped inclined surface and the end surface of the pushing block.

[0040] By adopting the above technical solution, when the pushing block elastically abuts against the side wall of the cutting knife and the inclined surface of the cutting knife tip, the antistatic agent in the liquid storage chamber automatically flows to the position of the balls under the action of the capillaries. Due to this design, the pushing block contacts the cutting knife, and the side wall of the cutting knife pushes the balls back into the feeding channels, so that the antistatic agent in the feeding channels can flow out, realizing the smearing of the side wall of the cutting knife and the inclined surface of the cutting knife tip, and reducing the possibility of static electricity generated during the cutting process of the cutting knife.

[0041] Optionally, the feeding mechanism includes a feeding roller rotatably installed on the processing table and located at the feeding end of the first conveyor belt, a power member coaxially fixed to the shaft end of the feeding roller, and an image recognition component arranged near the feeding end of the first conveyor belt of the cutting knife. A strip of polypropylene fiber is wound on the feeding roller. The image recognition component and the power member are electrically connected, and the power member drives the feeding roller to stop unwinding briefly when the image recognition component detects wrinkles at the end of the strip of polypropylene fiber.

[0042] By adopting the above technical solution, the power member can drive the feeding roller to rotate, so that the polypropylene fiber on the feeding roller is unwound onto the first conveyor belt, and the first conveyor belt conveys the polypropylene fiber. When the end of the polypropylene fiber moves below the image recognition component, the image recognition component can detect the state of the end of the polypropylene fiber.

[0043] If wrinkles appear at the end of the polypropylene staple fiber, at this time the power member stops running briefly. Driven by the first conveyor belt, the end of the polypropylene fiber will be straightened. At this time, the power member works again, so that the end of the polypropylene fiber conveyed under the cutting knife can always remain straight, reducing the cutting error of the cutting knife for the polypropylene staple fiber, avoiding undercutting or overcutting. Undercutting is more likely to cause the polypropylene staple fiber to splash due to static electricity or adhesion due to pressing, and overcutting will make the size of the cut polypropylene staple fiber not meet the production requirements and requires re-cutting, increasing the difficulty and complexity of the operation.

[0044] In summary, the present application includes at least one of the following beneficial technical effects:

[0045] When the polypropylene staple fiber needs to be cut, the winding polypropylene staple fiber in strip shape is conveyed by the feeding mechanism, and then the cutter is driven by the lifting component to cut the polypropylene fiber, so that the strip-shaped polypropylene fiber is cut into polypropylene staple fibers;

[0046] Driven by the lifting component, the cutter moves up and down along the mounting frame. At this time, the static electricity detection component detects the static electricity on the cutter. During this process, the lifting component drives the blowing component to blow the ions generated by the static electricity neutralization component towards the cutter, so that the ions contact the cutter and contact the ions with opposite charges on the cutter, realizing the removal of the static electricity on the cutter;

[0047] The blown air can blow the polypropylene staple fibers attached to the cutter. Even if there is no static electricity on the cutter, the force generated by the air can also separate the polypropylene staple fibers adhered to the cutter from the cutter; on the one hand, the static electricity in the cutting area is eliminated, making it difficult for the polypropylene staple fibers to adhere to the cutter due to static electricity, and greatly reducing the splashing generated during the cutting of the polypropylene staple fibers;

[0048] On the other hand, the blown air can blow off the polypropylene staple fibers adhered to the cutter due to pressing, so as to reduce the splashing and adhesion of the polypropylene staple fibers during the cutting process, reduce the secondary cutting of the polypropylene staple fibers, make the length and size of the cut polypropylene staple fibers meet the production requirements, and improve the product quality;

[0049] When the connecting rod drives the piston plate to move away from the top of the piston cylinder, the air pressure in the upper cavity of the piston cylinder decreases at this time. Therefore, the external air enters the liquid storage tank through the air duct. The air entering through the air duct will first make full contact with the pure water, so as to remove the solid particulate impurities such as dust in the air, avoid the impurities being sprayed onto the cutter, causing pollution to the cutter and the polypropylene fiber, and the solid particulate impurities such as dust may increase the friction between the cutter and the polypropylene fiber during the cutting process, resulting in more static electricity generation;

[0050] On the other hand, the air after passing through the pure water contains a certain amount of moisture, and the moisture can be blown out through the air outlet pipe and the air guide cover, so as to increase the environmental humidity around the cutter, thereby further reducing the generation of static electricity;

[0051] When the push rod drags the sliding sleeve to wrap the cutter, the second elastic member pushes the abutting block, so that the abutting block elastically abuts against the side wall and the tip inclined surface of the cutter. At this time, the coating component in the abutting block automatically coats the antistatic agent on the side wall and the tip inclined surface of the cutter, so that it is more difficult for static electricity to be generated on the surface of the cutter, further reducing the possibility of polypropylene staple fibers adhering to the cutter due to static electricity, and improving the quality of the cut polypropylene staple fibers;

[0052] When the pushing block elastically abuts against the side wall of the cutting knife and the inclined surface of the cutting knife tip, the antistatic agent in the liquid storage bin automatically flows to the ball under the action of the capillary tube. Due to this design, the pushing block contacts the cutting knife, and the side wall of the cutting knife pushes the ball back into the feeding channel, so that the antistatic agent in the feeding channel can flow out, realizing the coating of the side wall of the cutting knife and the inclined surface of the cutting knife tip, and reducing the possibility of static electricity generation during the cutting process of the cutting knife;

[0053] The power component can drive the unwinding roller to rotate, so that the polypropylene fiber on the unwinding roller is unwound onto the first conveyor belt. The first conveyor belt will convey the polypropylene fiber. When the end of the polypropylene fiber moves below the image recognition component, the image recognition component can detect the state of the end of the polypropylene fiber;

[0054] If there are wrinkles at the end of the polypropylene staple fiber, at this time the power component stops running briefly. Driven by the first conveyor belt, the end of the polypropylene fiber will be straightened. At this time, the power component works again, so that the end of the polypropylene fiber conveyed below the cutting knife can always remain straight, reducing the cutting error of the cutting knife for the polypropylene staple fiber, avoiding undercutting or overcutting. Undercutting is more likely to cause the polypropylene staple fiber to splash due to static electricity or adhesion due to pressing. Overcutting will make the size of the cut polypropylene staple fiber not meet the production requirements and requires re-cutting, increasing the difficulty and complexity of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0056] Figure 1 is the overall structural schematic diagram of the anti-splash type automatic metering and weighing feeding system in the embodiment of the present application;

[0057] Figure 2 is Figure 1 the cross-sectional view of the anti-splash type automatic metering and weighing feeding system in;

[0058] Figure 3 is Figure 2 the structural schematic diagram of the cutting mechanism in;

[0059] Figure 4 is Figure 3 the partial structural schematic diagram of the cutting mechanism in;

[0060] Figure 5 is Figure 4 the structural schematic diagram of the lifting component and the cutting knife in;

[0061] Figure 6 is Figure 5 Partial structural schematic diagram of the middle pushing block.

[0062] Reference numerals: 1, processing table; 11, first conveyor belt; 12, second conveyor belt; 13, blanking channel; 14, valve; 2, feeding mechanism; 21, feeding roller; 22, power member; 23, image recognition component; 3, cutting mechanism; 31, mounting bracket; 311, push rod; 32, cutting knife; 33, lifting component; 331, driving member; 332, bidirectional threaded rod; 333, guiding cylinder; 334, limiting cylinder; 34, static detection component; 35, static neutralization component; 36, blowing component; 361, piston cylinder; 362, piston plate; 363, connecting rod; 364, intake pipe; 365, outlet pipe; 4, weighing mechanism; 41, weighing bucket; 5, filtering component; 51, liquid storage tank; 52, air guide pipe; 6, air guide hood; 61, air guide hole; 7, sliding sleeve; 71, first elastic member; 8, scraping component; 81, pushing block; 82, second elastic member; 9, coating component; 91, liquid storage bin; 92, ball; 93, liquid delivery channel; 94, liquid delivery hole. Detailed implementation manners

[0063] The following Figures 1-6 is a further detailed description of the present application in conjunction with the attached drawings.

[0064] An embodiment of the present application discloses a splash-proof automatic metering and weighing feeding system.

[0065] Referring to Figure 1 and Figure 2 , a splash-proof automatic metering and weighing feeding system includes a processing table 1, a first conveyor belt 11 and a second conveyor belt 12 for transporting polypropylene fibers are respectively arranged on the processing table 1, and a feeding mechanism 2 for feeding polypropylene fibers is arranged on the processing table 1. The first conveyor belt 11 is used for transporting the polypropylene staple fibers fed by the feeding mechanism 2;

[0066] A cutting mechanism 3 for cutting the strip-shaped polypropylene fibers is further arranged on the processing table 1. A blanking channel 13 is arranged at the blanking end of the first conveyor belt 11. The lower end of the blanking channel 13 is opposite to the second conveyor belt 12, and a weighing mechanism 4 for evenly weighing the polypropylene staple fibers after blanking is arranged on the second conveyor belt 12.

[0067] Referring to Figure 2 , Figure 3 and Figure 4, the cutting mechanism 3 includes a mounting frame 31, a cutting knife 32 disposed on the mounting frame 31, and a lifting assembly 33 for driving the cutting knife 32 to move up and down along the height direction of the mounting frame 31. An electrostatic detection assembly 34 for detecting the static electricity of the cutting knife 32 during cutting, an electrostatic neutralization assembly 35 for neutralizing the static electricity of the cutting knife 32 after cutting, and a blowing assembly 36 for blowing the ions generated by the electrostatic neutralization assembly 35 towards the cutting knife 32 when the cutting knife 32 rises are further disposed on the mounting frame 31.

[0068] The following is a detailed explanation of all the above-mentioned mechanisms in turn:

[0069] Referring to Figure 1 and Figure 2 , the feeding mechanism 2 includes a feeding roller 21 rotatably mounted on the processing table 1 and located at the loading end of the first conveyor belt 11, a power member 22 coaxially fixed to the shaft end of the feeding roller 21, and an image recognition assembly 23 disposed near the loading end of the first conveyor belt 11 of the cutting knife 32.

[0070] The feeding roller 21 is wound with strip-shaped polypropylene fibers. The power member 22 is a reduction motor, and in other embodiments, a stepping motor or a servo motor can also be used, etc. The image recognition assembly 23 is electrically connected to the reduction motor. The image recognition assembly 23 includes a fixing frame and a plurality of image sensors disposed on the fixing frame. The image sensors are electrically connected to the reduction motor;

[0071] The reduction motor can drive the feeding roller 21 to rotate, so that the polypropylene fibers on the feeding roller 21 are unwound onto the first conveyor belt 11. The first conveyor belt 11 will convey the polypropylene fibers. When the end of the polypropylene fibers moves below the image sensor, the image sensor can detect the state of the end of the polypropylene fibers;

[0072] If there are wrinkles at the end of the polypropylene staple fibers, the reduction motor will stop running briefly at this time. Driven by the first conveyor belt 11, the end of the polypropylene fibers will be straightened. At this time, the reduction motor works again, so that the end of the polypropylene fibers conveyed below the cutting knife 32 can always remain straight, reducing the cutting error of the cutting knife 32 on the polypropylene staple fibers, avoiding undercutting or overcutting. Undercutting is more likely to cause the polypropylene staple fibers to splash due to static electricity or adhesion due to pressing. Overcutting will make the size of the cut polypropylene staple fibers not meet the production requirements and requires re-cutting, increasing the difficulty and complexity of the operation.

[0073] When the polypropylene fibers pass through the image sensor, they will reach the mounting frame 31 and pass through the mounting frame 31 via the first conveyor belt 11. At this time, driven by the telescopic assembly, the cutting knife 32 will continuously cut the passing polypropylene fibers, cutting the strip-shaped polypropylene fibers into polypropylene staple fibers that meet the requirements.

[0074] Due to the nature of polypropylene staple fiber itself, it is prone to generate static electricity during the cutting process due to friction with the cutting knife 32. To reduce the splashing of polypropylene staple fiber caused by static electricity and the adhesion of polypropylene staple fiber on the cutting knife 32, the static electricity detection component 34 will detect the static electricity on the cutting knife 32, and then neutralize the static electricity on the cutting knife 32 through the static electricity neutralization component 35 to eliminate the defects caused by static electricity.

[0075] Specifically, referring to Figure 3 and Figure 4 , the static electricity detection component 34 includes two groups of static electricity detectors installed on the mounting frame 31 and located on both sides of the first conveyor belt 11, and a controller electrically connected to the two static electricity detectors. The static electricity neutralization component 35 and the lifting component 33 are both electrically connected to the controller.

[0076] The static electricity neutralization component 35 includes two groups of ion generators arranged on the mounting frame 31 and located on both sides of the first conveyor belt 11. There are two groups of blowing components 36 corresponding to the two ion generators, and the two blowing components 36 can blow the ions generated by the ion generators towards the end of the cutting knife 32.

[0077] After the cutting knife 32 cuts the polypropylene fiber, at this time, the static electricity detector will detect the static electricity on the cutting knife 32, detect the magnitude of the static electricity, and transmit the data to the controller. The controller controls the ion generator to eject ions, and the ions with opposite charges neutralize the static electricity, thereby removing the static electricity on the cutting knife 32, so that the polypropylene staple fiber adhering to the end of the cutting knife 32 due to static electricity generated during the cutting process falls from the end of the cutting knife 32, and the polypropylene staple fiber falling on the first conveyor belt 11 is conveyed by the first conveyor belt 11 outside the cutting station, avoiding the secondary cutting of the polypropylene staple fiber adhering to the cutting knife 32.

[0078] Referring to Figure 3 and Figure 4 , the blowing component 36 includes a piston cylinder 361, a piston plate 362, a connecting rod 363, an air inlet pipe 364 and an air outlet pipe 365. The piston cylinder 361 is fixed to the side wall of the mounting frame 31, and the upper end of the piston cylinder 361 is closed and the lower end is open. The piston plate 362 is slidably and sealingly installed in the piston cylinder 361. One end of the connecting rod 363 passes through the top of the piston cylinder 361 and is fixedly connected to the piston plate 362. The connection part of the connecting rod 363 and the piston cylinder 361 maintains sliding seal. The end of the connecting rod 363 away from the piston plate 362 is fixedly connected to the lifting part of the lifting component 33.

[0079] The air inlet pipe 364 and the air outlet pipe 365 are respectively communicated with the cavity of the piston cylinder 361 above the piston plate 362. Check valves for restricting the one-way flow of air are arranged in both the air inlet pipe 364 and the air outlet pipe 365, and the setting direction of the check valve is the same as the air flow direction in the air inlet pipe 364 and the air outlet pipe 365.

[0080] The air inlet pipe 364 is connected to a filter assembly 5 for filtering the air entering the air inlet pipe 364 and reducing the generation of static electricity. Figure 3 and Figure 4 The filter assembly 5 includes a liquid storage tank 51 and an air guide pipe 52 arranged on the liquid storage tank 51. The liquid storage tank 51 is filled with pure water. One end of the air inlet pipe 364 is connected to the cavity above the pure water in the liquid storage tank 51. One end of the air guide pipe 52 is inserted into the pure water, and the other end extends out of the liquid storage tank 51.

[0081] When the connecting rod 363 drives the piston plate 362 to move away from the top of the piston cylinder 361, the air pressure in the upper cavity of the piston cylinder 361 decreases, so the external air enters the liquid storage tank 51 through the air duct 52. The air entering through the air duct 52 will first be fully in contact with the pure water, thereby removing solid particulate impurities such as dust in the air, preventing impurities from being sprayed onto the cutter 32, causing contamination of the cutter 32 and contamination of the polypropylene fiber, and solid particulate impurities such as dust may increase the friction between the cutter 32 and the polypropylene fiber during the cutting process, thereby causing more static electricity to be generated.

[0082] On the other hand, the air after passing through the purified water contains a certain amount of moisture, which can be blown out through the air outlet pipe 365 and the air guide cover 6 to increase the environmental humidity around the cutter 32, thereby further reducing the generation of static electricity.

[0083] In order to make the airflow ejected from the air outlet pipe 365 be ejected onto the cutter 32 more evenly, an air guide cover 6 is provided at the end of the air outlet pipe 365, and a plurality of air guide holes 61 are opened on the air guide cover 6. Each air guide hole 61 can blow the ions generated by the ion generator more evenly toward the cutter 32, so that the static electricity at various places of the cutter 32 can be evenly eliminated.

[0084] Reference Figure 3 , Figure 4 and Figure 5 The lifting assembly 33 includes a driving member 331, a bidirectional threaded rod 332, a guide cylinder 333 and a limit cylinder 334. The driving member 331 is installed on the top of the mounting frame 31. The bidirectional threaded rod 332 is coaxially fixed to the output end of the driving member 331. The guide cylinder 333 is slidably sleeved on the bidirectional threaded rod 332. The top of the cutter 32 is fixedly connected to the lower end of the guide cylinder 333, and an insertion rod that is plugged in and adapted to the thread on the bidirectional threaded rod 332 is fixed on the inner wall of the guide cylinder 333.

[0085] The limiting cylinder 334 is fixed to the top of the mounting frame 31 and is slidably sleeved outside the guiding cylinder 333. A rotational limiting structure for restricting the free rotation of the guiding cylinder 333 is provided between the limiting cylinder 334 and the guiding cylinder 333. The rotational limiting structure includes a limiting groove opened on the inner wall of the limiting cylinder 334 and a guiding rod correspondingly arranged on the outer peripheral wall of the guiding cylinder 333. The guiding rod is slidably inserted into the guiding groove, and the guiding groove can limit the rotation of the guiding rod, so that the guiding cylinder 333 cannot rotate freely, thereby realizing the movement of the guiding cylinder 333 and driving the cutter 32 to move up and down.

[0086] Referring to Figure 4 and Figure 5 , a sliding sleeve 7 is slidably sleeved outside the cutter 32. A first elastic member for moving the sliding sleeve 7 upward along the cutter 32 is provided between the sliding sleeve 7 and the cutter 32. The first elastic member uses a spring. The first elastic member can drive the sliding sleeve 7 to move upward, so that the cutter 32 leaks out of the sliding sleeve 7. A push rod 311 for pushing against the sliding sleeve 7 is provided at the top of the mounting frame 31, so that the lower end of the sliding sleeve 7 wraps the end of the cutter 32.

[0087] When the cutter 32 moves downward, the cutter 32 always extends out of the sliding sleeve 7. At this time, the cutter 32 can cut the polypropylene fiber. When the cutter 32 moves upward to a certain height, the push rod 311 pushes the sliding sleeve 7 to move downward, so that the sliding sleeve 7 wraps the cutter 32.

[0088] Two sets of scraping assemblies 8 for scraping the tip and side wall of the cutter 32 are symmetrically arranged on the inner wall of the sliding sleeve 7 near the lower end.

[0089] Referring to Figure 5 and Figure 6 , the scraping assembly 8 includes a pushing block 81 slidably installed on the inner wall of the sliding sleeve 7 and a second elastic member 82 for driving the pushing block 81 to move towards the side wall of the cutter 32. The second elastic member 82 uses a spring. A part of the surface of the pushing block 81 close to the side wall of the cutter 32 is set as a wedge-shaped inclined surface adapted to the inclined surface of the tip of the cutter 32, and a part is set as an end surface adapted to the side wall of the cutter 32. And a coating assembly 9 for coating the anti-static agent on the inclined surface of the tip of the cutter 32 and the side wall of the cutter 32 is arranged in the pushing block 81.

[0090] Referring to Figure 6 , the coating assembly 9 includes a liquid storage chamber 91 opened in the pushing block 81 and a plurality of liquid delivery channels 93 penetrating through the wedge-shaped inclined surface and the end surface of the pushing block 81. Each liquid delivery channel 93 presents liquid delivery holes 94 spaced apart on the wedge-shaped inclined surface and the end surface of the pushing block 81.

[0091] An antistatic agent is installed in the liquid storage bin 91. Capillaries for transporting the antistatic agent in the liquid storage bin 91 to the wedge-shaped inclined surface and end surface of the pushing block 81 are arranged in each liquid delivery channel 93, and a ball 92 for hindering the continuous outflow of the antistatic agent is arranged at a position of the liquid delivery channel 93 close to the wedge-shaped inclined surface and end surface of the pushing block 81.

[0092] After being cut by the cutter 32, the first conveyor belt 11 transports the cut polypropylene staple fibers into the blanking channel 13, and the polypropylene staple fibers are evenly weighed by the weighing mechanism 4.

[0093] Specifically, referring to Figure 1 and Figure 2 , the weighing mechanism 4 includes a plurality of pressure sensors evenly and spacedly arranged on the second conveyor belt 12 and weighing buckets 41 placed on the corresponding pressure sensors. The blanking channels 13 correspond to the weighing buckets 41 one by one, and a valve 14 for blocking the cut polypropylene staple fibers is arranged in the blanking channel 13.

[0094] When weighing is required, the valve 14 is controlled to open, and the polypropylene staple fibers on the first conveyor belt 11 fall from the discharge end into the blanking channel 13 and then into the corresponding weighing bucket 41. After being measured by the pressure sensor, the weight of the polypropylene staple fibers in the weighing bucket 41 reaches the packaging requirement. At this time, the valve 14 is closed, and the weighing bucket 41 is driven to move by the second conveyor belt 12, and then the next weighing bucket 41 is packaged, so as to realize the even distribution of the cut polypropylene staple fibers, which is convenient for subsequent packaging of the polypropylene staple fibers.

[0095] The implementation principle of the splash-proof automatic metering and weighing feeding system in the embodiment of the present application is as follows: When the polypropylene staple fibers need to be cut, the winding mechanism 2 is used to transport the wound strip-shaped polypropylene staple fibers, and then the cutter 32 is driven by the lifting assembly 33 to cut the polypropylene fibers, so that the strip-shaped polypropylene fibers are cut into polypropylene staple fibers;

[0096] Driven by the lifting assembly 33, the cutter 32 moves up and down along the mounting frame 31. At this time, the static electricity detection assembly 34 detects the static electricity on the cutter 32. During this process, the lifting assembly 33 drives the blowing assembly 36 to blow the ions generated by the static electricity neutralization assembly 35 towards the cutter 32, so that the ions contact the cutter 32 and contact the ions with opposite charges on the cutter 32, realizing the removal of the static electricity on the cutter 32;

[0097] The blown air can blow the polypropylene staple fibers attached to the cutter 32. Even if there is no static electricity on the cutter 32, the force generated by the air can also separate the polypropylene staple fibers adhered to the cutter 32 from the cutter 32.

[0098] On the one hand, the static electricity in the cutting area is eliminated, making it difficult for the polypropylene staple fibers to adhere to the cutting knife 32 due to static electricity, significantly reducing the splashing generated during the cutting of the polypropylene staple fibers. On the other hand, the blown air can blow off the polypropylene staple fibers adhered to the cutting knife 32 due to pressing, thereby reducing the splashing and adhesion of the polypropylene staple fibers during the cutting process, reducing the secondary cutting of the polypropylene staple fibers, making the length and size of the cut polypropylene staple fibers meet the production requirements, and improving the quality of the product.

[0099] The above are all optional embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A splash-proof automatic metering, weighing and feeding system, characterized in that: It includes a processing table (1), on which a first conveyor belt (11) and a second conveyor belt (12) for transporting polypropylene fibers are respectively arranged. A feeding mechanism (2) for feeding polypropylene fibers is arranged on the processing table (1), and the first conveyor belt (11) is used to transport the polypropylene fibers fed by the feeding mechanism (2). A cutting mechanism (3) for cutting the strip-shaped polypropylene fibers is further arranged on the processing table (1). A blanking channel (13) is arranged at the blanking end of the first conveyor belt (11), and the lower end of the blanking channel (13) is opposite to the second conveyor belt (12). A weighing mechanism (4) for evenly weighing the cut polypropylene staple fibers is arranged on the second conveyor belt (12). The cutting mechanism (3) includes a mounting frame (31), a cutting knife (32) arranged on the mounting frame (31), and a lifting assembly (33) for driving the cutting knife (32) to lift along the height direction of the mounting frame (31). The following are also arranged on the mounting frame (31): An electrostatic detection component (34) for detecting the static electricity of the cutting knife (32) during cutting. An electrostatic neutralization component (35) for neutralizing the static electricity of the cutting knife (32) after cutting. The electrostatic neutralization component (35) includes two ion generators arranged on the mounting frame (31) and located on both sides of the first conveyor belt (11). A blowing component (36) for blowing the ions generated by the electrostatic neutralization component (35) towards the cutting knife (32) when the cutting knife (32) rises. The blowing component (36) includes an air inlet pipe (364) and an air outlet pipe (365). A filtering component (5) for filtering the air entering the air inlet pipe (364) and reducing the generation of static electricity is communicatedly arranged on the air inlet pipe (364). The filtering component (5) includes a liquid storage tank (51) and a gas guide pipe (52) arranged on the liquid storage tank (51). Pure water is filled in the liquid storage tank (51). One end of the air inlet pipe (364) is communicated with the cavity above the pure water in the liquid storage tank (51), and one end of the gas guide pipe (52) is inserted into the pure water and the other end extends out of the liquid storage tank (51). A sliding sleeve (7) is slidably sleeved outside the cutting knife (32). A first elastic member for enabling the sliding sleeve (7) to move upward along the cutting knife (32) is arranged between the sliding sleeve (7) and the cutting knife (32). A push rod (311) for pushing against the sliding sleeve (7) is arranged at the top of the mounting frame (31) so that the lower end of the sliding sleeve (7) wraps the end of the cutting knife (32). Two scraping components (8) for scraping the tip and the side wall of the cutting knife (32) are symmetrically arranged on the inner wall of the sliding sleeve (7) near the lower end. The blowing component (36) further includes a piston cylinder (361), a piston plate (362), and a connecting rod (363). The piston cylinder (361) is fixed to the side wall of the mounting bracket (31), and the upper end of the piston cylinder (361) is closed and the lower end is open. The piston plate (362) is slidably and sealingly installed in the piston cylinder (361). One end of the connecting rod (363) penetrates through the top of the piston cylinder (361) and is fixedly connected to the piston plate (362). The connection between the connecting rod (363) and the piston cylinder (361) remains slidably sealed. The end of the connecting rod (363) away from the piston plate (362) is fixedly connected to the lifting part of the lifting component (33). The air inlet pipe (364) and the air outlet pipe (365) are respectively communicated with the cavity of the piston cylinder (361) above the piston plate (362). Check valves for restricting the unidirectional flow of air are provided in both the air inlet pipe (364) and the air outlet pipe (365), and the setting direction of the check valve is the same as the air flow direction in the air inlet pipe (364) and the air outlet pipe (365). A gas guide cover (6) is provided at the end of the air outlet pipe (365). A plurality of gas guide holes (61) are opened on the gas guide cover (6), and each gas guide hole (61) can blow the ions generated by the ion generator towards the cutting knife (32).

2. The splash-proof automatic metering and weighing feeding system according to claim 1, wherein: The static electricity detection component (34) includes two static electricity detectors installed on the mounting bracket (31) and located on both sides of the first conveyor belt (11), and a controller electrically connected to the two static electricity detectors. The static electricity neutralization component (35) and the lifting component (33) are both electrically connected to the controller.

3. The splash-proof automatic metering and weighing feeding system according to claim 1, characterized in that: Two blowing components (36) are provided corresponding to the two ion generators, and the two blowing components (36) can blow the ions generated by the ion generator towards the end of the cutting knife (32).

4. A splash-proof automatic metering and weighing feeding system according to claim 1, characterized in that: The lifting component (33) includes a driving member (331), a bidirectional threaded rod (332), a guiding cylinder (333), and a limiting cylinder (334). The driving member (331) is installed on the top of the mounting bracket (31). The bidirectional threaded rod (332) is coaxially fixed to the output end of the driving member (331). The guiding cylinder (333) is slidably sleeved on the bidirectional threaded rod (332). The top of the cutting knife (32) is fixedly connected to the lower end of the guiding cylinder (333), and a plug rod adapted to be inserted into the thread on the bidirectional threaded rod (332) is fixed on the inner wall of the guiding cylinder (333). The limiting cylinder (334) is fixed to the top of the mounting bracket (31) and is slidably sleeved outside the guiding cylinder (333). A rotational limiting structure for restricting the free rotation of the guiding cylinder (333) is provided between the limiting cylinder (334) and the guiding cylinder (333).

5. The splash-proof automatic metering and weighing feeding system according to claim 1, characterized in that: The scraping assembly (8) includes a pushing block (81) slidably mounted on the inner wall of the sliding sleeve (7) and a second elastic member (82) for driving the pushing block (81) to move towards the side wall of the cutting knife (32). One part of the surface of the pushing block (81) close to the side wall of the cutting knife (32) is set as a wedge-shaped inclined surface adapted to the tip inclined surface of the cutting knife (32), and part of it is set as an end surface adapted to the side wall of the cutting knife (32). A coating assembly (9) for coating an antistatic agent on the tip inclined surface and the side wall of the cutting knife (32) is arranged in the pushing block (81).

6. The splash-proof automatic metering and weighing feeding system according to claim 5, characterized in that: The coating assembly (9) includes a liquid storage chamber (91) opened in the pushing block (81) and a plurality of liquid supply channels (93) penetrating through the wedge-shaped inclined surface and the end surface of the pushing block (81). Each of the liquid supply channels (93) presents liquid supply holes (94) spaced apart on the wedge-shaped inclined surface and the end surface of the pushing block (81). The liquid storage chamber (91) is filled with an antistatic agent. Capillaries for transporting the antistatic agent in the liquid storage chamber (91) to the wedge-shaped inclined surface and the end surface of the pushing block (81) are arranged in each of the liquid supply channels (93), and balls (92) for hindering the continuous outflow of the antistatic agent are arranged at positions of the liquid supply channels (93) close to the wedge-shaped inclined surface and the end surface of the pushing block (81).

7. The splash-proof automatic metering and weighing feeding system according to claim 1, wherein: The feeding mechanism (2) includes a feeding roller (21) rotatably mounted on the processing table (1) and located at the feeding end of the first conveyor belt (11), a power member (22) coaxially fixed to the shaft end of the feeding roller (21), and an image recognition assembly (23) arranged near the feeding end of the first conveyor belt (11) of the cutting knife (32). A strip of polypropylene fiber is wound on the feeding roller (21). The image recognition assembly (23) and the power member (22) are electrically connected. When the image recognition assembly (23) detects wrinkles at the end of the strip of polypropylene fiber, the power member (22) drives the feeding roller (21) to stop feeding briefly.

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