Vacuum suction and supply system for injection molding raw materials and control method

Abstract

The invention discloses an injection molding raw material vacuum sucking and feeding system and a control method, and relates to the technical field of feeding devices.The feeding system comprises a screening mechanism, a sucking mechanism, a drying mechanism, a hopper and a self-cleaning mechanism, the sucking mechanism is used for sucking injection molding raw materials in the hopper, the screening mechanism communicates with the sucking mechanism, and the drying mechanism communicates with the screening mechanism; the self-cleaning mechanism is fixedly connected with the screening mechanism, the hopper is in a barrel shape, a gathering plate is arranged on the hopper and is in a circular truncated cone shape, first vibrators are installed on the gathering plate and are arranged in the circumferential direction of the gathering plate, and the first vibrators are used for enabling injection molding raw materials to be horizontally arranged on the upper end face in the hopper and evenly distributed in the hopper. According to the feeding system, through the links of screening, material suction, drying and the like, a gathering plate is in a circular truncated cone shape and is provided with a first vibrator, so that injection molding raw materials are evenly distributed in a hopper, the fluidity of the raw materials is ensured, and accumulation or uneven distribution of the raw materials is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of feeding devices, in particular to an injection molding raw material vacuum suction feeding system and a control method. Background Art

[0002] With the continuous advancement of industrial automation technology, the injection molding industry has higher and higher requirements for raw material handling systems. Especially in a high-precision, high-efficiency production environment, how to ensure the uniform supply, precise control and efficient drying of raw materials has become an important factor in improving production efficiency and reducing costs. As a key link in injection molding, the traditional feeding method often relies on manual or simple mechanical transmission devices, which cannot achieve precise control of raw material flow and efficient grading. Therefore, with the increasing demand for high efficiency, automation and precise control, the feeding system is gradually developing in the direction of intelligence and precision, and integrated, modular and automated feeding systems are gradually becoming a trend.

[0003] Currently in the feeding system, the screening, drying and suction mechanisms are usually set up separately and have relatively simple functions. The screening system generally uses a single vibrating screening plate to sort the raw materials, but due to the unstable screening effect and uneven particle distribution, it often leads to low efficiency in subsequent links. Traditional suction systems also mostly rely on mechanical arms or simple suction devices to work, and cannot accurately control the flow rate and spacing during the suction process, thus affecting the amount and stability of raw materials. In addition, the drying mechanism generally uses a simple hot air drying method, but due to the uneven temperature and humidity during the drying process, it often leads to poor drying effect of the raw materials, which in turn affects the final injection molding quality.

[0004] With regard to the above technology, firstly, the traditional suction system is often unable to accurately control the distance and suction speed between the suction gun and the hopper, which is prone to uneven raw material suction or blockage, and cannot achieve seamless connection between particle screening and the suction process, resulting in low system efficiency. Secondly, the traditional cleaning function is insufficiently designed, resulting in raw material residue and equipment pollution, which in turn affects the continuity and stability of production. Finally, there is a lack of drying treatment for the material. Therefore, technical personnel in this field provide an injection molding raw material vacuum suction feeding system and control method to solve the problems raised in the above background. Summary of the invention

[0005] The object of the present invention is to provide a vacuum suction feeding system and a control method for injection molding raw materials to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions: The feeding system includes a screening mechanism, a suction mechanism, a drying mechanism, a hopper and a self-cleaning mechanism. The suction mechanism is used to suck the injection molding raw materials in the hopper. The screening mechanism is connected to the suction mechanism, the drying mechanism is connected to the screening mechanism, and the self-cleaning mechanism is tightly connected to the screening mechanism. The hopper is barrel-shaped, and a gathering plate is provided on the hopper. The gathering plate is truncated. A first vibrator is installed on the gathering plate, and the first vibrator is arranged circumferentially around the gathering plate. The first vibrator is used to make the injection molding raw materials in the hopper level on the upper end surface and evenly arranged inside.

[0007] By adopting the above technical solutions, the core function of the feeding system is to ensure the uniform supply of injection molding raw materials and improve production efficiency through screening, suction, drying and other links. As the raw material storage part, the hopper adopts a barrel-type structure and can accommodate a large amount of injection molding raw materials. A gathering plate is installed on the top of the hopper. The gathering plate is truncated cone-shaped and its design can guide the raw materials to concentrate in the central position to prevent uneven distribution of the raw materials in the hopper. A first vibrator is provided on the gathering plate, which is arranged along the circumference of the gathering plate. Through the vibration, the injection molding raw materials are evenly arranged in the hopper, and the fluidity of the raw materials is ensured to avoid the accumulation or uneven distribution of raw materials.

[0008] Furthermore, the screening mechanism includes a screening plate, a screening box, a cyclone separator, a screening motor, a transmission belt, a second vibrator, a rotating rod and an auxiliary unloading assembly. The screening box is connected to the suction mechanism, the screening box is connected to the cyclone separator, the cyclone separator is connected to the drying mechanism, and the screening motor is connected to the rotating rod, the rotating rod is connected to the transmission belt, the rotating rod is connected to the auxiliary unloading assembly, the second vibrator is fastened to the screening plate, and the transmission belt is in an eight-shaped shape.

[0009] By adopting the above technical solution, the screen plate is placed obliquely in the screen box, and the screen holes are gradually reduced from top to bottom to ensure that the injection molding materials of different particles are separated layer by layer in order of size. The screen plate is provided with an inner flow surface. When the injection molding raw materials flow through, the inclined surface design of the inner flow surface effectively controls the flow of particles to prevent the mixing of over-large or under-sized particles. The screen box is the main container of the entire screening mechanism, which is equipped with screen plates, cyclone separators and other components to carry the flow and classification functions of the raw materials. By connecting with the suction mechanism, the flow of raw materials in the screening box is controlled and orderly. The cyclone separator uses the vortex effect of air flow to separate smaller particles from large particles, ensuring that particles of different sizes are subsequently dried and stored. The screening motor drives the rotating rod, which drives the screening plate to rotate through the transmission belt to control the flow size, enhance the efficiency of materials passing through the screening holes, and make the screening effect more precise. The transmission belt is arranged in an eight-shaped shape. The second vibrator provides the necessary vibration effect through a fast connection with the screening plate to ensure that the raw materials on the screening plate are fully screened, and the vibration method can effectively improve the screening efficiency of the raw materials. The rotating rod is connected to the screening motor and the transmission belt. The function of the rotating rod is to drive the vibration of the screening plate to make the screening effect more efficient. The auxiliary unloading component is mainly connected to the rotating rod through transmission to adjust the material flow rate to ensure that the screened material can smoothly enter the next processing link.

[0010] Furthermore, the screening mechanism also includes a screening plate, a connecting pipe, a first reflux pipe and a second reflux pipe. The screening plate is placed obliquely in the screening box. The screening plate is provided with screening holes. The screening holes decrease step by step from top to bottom. The screening plate is provided with an inner flow surface, which is an inclined surface. A flow point is provided between the screening plates. The flow point is used to control the particle size of the injection molding raw material flowing through. The screening box is connected to the connecting pipe, which is connected to the cyclone separator. The connecting pipe is gourd-shaped. The screening plate is located at the lower part of the cyclone separator. The first reflux pipe and the second reflux pipe are both connected to the screening box.

[0011] By adopting the above technical solution, the main function of the screening mechanism is to classify the particle size of the injection molding raw materials through a series of screening, reflow and separation processes. The screening plate is placed in the screening box at an angle to ensure that the material can slide smoothly when passing through the screening plate. The screening plate is provided with a series of screening holes of gradually decreasing size, which are gradually reduced from top to bottom, effectively separating the raw materials of different particle sizes. The design of the screening plate also provides an inner flow surface, which is an inclined surface, further optimizes the material flow process, avoids the stagnation of the material during the screening process, and thus improves the screening efficiency. During the screening process, the material will flow along the flow point of the screening plate. The function of the flow point is to further control the classification of the injection molding raw materials by adjusting the relationship between the flow rate and the particle size. Through these designs, the screening mechanism can accurately separate materials of different particle sizes according to the particle size of the injection molding raw materials. The screening box is connected to the connecting pipe to ensure that the screened materials can quickly flow into the cyclone separator for further processing. The connecting pipe is a gourd-shaped structure, which connects the screening box and the cyclone separator to ensure smooth flow of materials. The sieve plate is located at the bottom of the cyclone separator, which further ensures the flow direction and flow rate of the materials. The first return pipe and the second return pipe are connected to the screening box to return the materials that fail to pass through the screening holes during the screening process to the raw material box for repeated screening.

[0012] Furthermore, the suction mechanism includes a suction gun, a gathering component, a suction pipe, a spacing wheel, a spacing block, a spacing motor and a vacuum pump. The suction gun and the gathering component are tightly connected, the suction pipe and the suction gun are communicated, the suction pipe and the vacuum pump are communicated, the vacuum pump and the screening box are communicated, the spacing block and the hopper are tightly connected, the spacing motor and the spacing block are tightly connected, the spacing motor and the spacing wheel are transmission-connected, the indirect wheel and the suction gun are transmission-connected, the suction gun is vertically placed, and the spacing motor is used to control the spacing between the gathering plate and the muzzle of the suction gun.

[0013] By adopting the above technical scheme, the suction gun is placed vertically and can directly absorb the injection molding raw materials in the hopper. The suction gun is tightly connected to the gathering component to ensure the stability of the suction gun and the precise control of the raw material absorption process. The gathering component is composed of a gathering block, a gathering motor, a fixed plate, a rotating plate, etc., which is responsible for concentrating the injection molding raw materials to the entrance of the suction gun. The gathering motor drives the rotation of the fixed plate to gather the raw materials and make them enter the suction gun in a concentrated manner. The suction pipe is connected to the vacuum pump through the suction gun through the suction pipe and is connected to the screening box to ensure that the sucked raw materials can be smoothly transported to the subsequent links. The spacing wheel and the spacing block are controlled by the spacing motor. The spacing wheel and the spacing block adjust the spacing between the gathering plate and the suction gun muzzle to ensure that the suction process is smooth and there is no problem of excessive suction or blockage. The spacing motor adjusts the spacing wheel and the spacing block to control the distance between the gathering plate and the suction gun to ensure the accuracy and efficiency of the suction process. After the vacuum pump is started, the raw materials in the hopper are sucked through the suction gun and transported to the screening mechanism. The vacuum pump is connected to the screening box to ensure stable flow of raw materials.

[0014] Furthermore, the aggregation component includes an aggregation block, an aggregation motor, a fixed plate, a rotating plate, a sliding block, an auxiliary wheel, an auxiliary aggregation motor, a fan, a pressure sensor and a descending plate. The aggregation block is tightly connected to the suction gun, the fixed plate is tightly connected to the aggregation block, the rotating plate and the fixed plate are rotatably connected, the aggregation motor and the fixed plate are tightly connected, the sliding block and the fixed plate are slidably connected, the auxiliary aggregation motor and the sliding block are tightly connected, the auxiliary aggregation motor and the auxiliary wheel are transmission-connected, the fan is tightly connected to the aggregation plate, the fan is used to align the suction gun to assist in pressurization, the descending plate and the suction gun are tightly connected, and the pressure sensor and the descending plate are tightly connected.

[0015] By adopting the above technical solution, the gathering component is mainly used to gather the injection molding raw materials in the hopper and guide them to the suction gun for suction. The gathering block is fixed to the suction gun by a fastening connection to ensure that the suction gun always maintains a stable position to avoid displacement during the suction process. The gathering motor drives the rotating plate to rotate by fastening with the fixed plate. The rotating plate drives the gathering block to rotate by rotating to achieve the function of gathering the injection molding raw materials. In the gathering component, the sliding block is connected to the fixed plate by sliding. During the gathering process, the sliding block can slide up and down in the fixed plate to adjust the distance between the gathering block and the suction gun, further improving the gathering efficiency. The auxiliary gathering motor drives the sliding block to move, and is connected through the auxiliary wheel transmission, so that the displacement of the sliding block is more precise. At the same time, the auxiliary motor ensures the smooth movement of the sliding block. The fan is fastened to the gathering plate, and provides the additional suction required by the suction gun by wind boosting to prevent insufficient or unstable suction during the suction process. The design of the fan ensures the guidance of the airflow during the gathering work, further enhancing the gathering effect of the raw materials. The descending plate is connected to the suction gun to assist in controlling the flow rate of the raw materials, avoiding too much or too little raw materials entering the suction gun, and ensuring the smoothness of the suction process. At the same time, the pressure sensor is connected to the descending plate, which can monitor the descending speed of the raw materials and the position of the material surface in real time, ensuring that the raw material surface remains in the best position during the suction process, avoiding the problem of uneven suction or unstable suction caused by excessive or insufficient pressure, and realizing efficient aggregation and precise absorption of injection molding raw materials. Through the coordination of the aggregation motor, rotating plate and sliding block, the working distance and suction of the suction gun can be accurately controlled while ensuring the aggregation effect, avoiding production problems caused by uneven distribution of raw materials or unstable suction. The boosting effect provided by the fan makes the suction process more efficient, and the real-time monitoring of the pressure sensor ensures the smoothness and stability of the entire process. Finally, the aggregation component can effectively improve the working efficiency and reliability of the feeding system and reduce production stagnation caused by uneven suction or equipment failure.

[0016] Furthermore, the drying mechanism includes a drying box, an injection pipe, a preheating pipe, a circulation pump, a temperature and humidity sensor and a heating box. The injection pipe is connected to the drying box, the injection pipe is used for an external injection molding device, the preheating pipe is firmly connected to the drying box, the preheating pipe is connected to the circulation pump, the circulation pump is connected to the preheating pipe, the preheating pipe is connected to the heating box, and the temperature and humidity sensor is firmly connected to the drying box.

[0017] By adopting the above technical solution, the main function of the drying box is to dry the screened materials. The injection pipe is connected to the external injection molding device to ensure that the injection molding materials can be processed through the drying box. The preheating pipe transports hot air to the drying box through the circulation pump to improve the drying efficiency. The heating box provides a stable heat source to ensure the uniformity of material drying. The temperature and humidity sensor is used to monitor the temperature and humidity in the drying box in real time to ensure that the raw materials are dried under suitable conditions. The circulation pump ensures the circulation of the heating liquid in the drying box, helps to evenly distribute the hot air, and enhances the drying effect.

[0018] Furthermore, the self-cleaning mechanism includes a lifting hydraulic cylinder, a cleaning block, a cleaning wheel, a cleaning motor, a cleaning nozzle and an electric slide. The electric slide and the screening box are fastened together, the electric slide and the lifting hydraulic cylinder are transmission-connected, the lifting hydraulic cylinder and the cleaning block are transmission-connected, the cleaning motor and the cleaning block are fastened together, the cleaning motor and the cleaning wheel are transmission-connected, and the cleaning nozzle and the cleaning block are fastened together.

[0019] By adopting the above technical scheme, the lifting hydraulic cylinder and the cleaning block drive the cleaning block to move up and down in the screening box through the lifting hydraulic cylinder to clean the screening plate and other components. The cleaning motor and the cleaning wheel drive the cleaning wheel to rotate to clean the inside of the screening box to avoid accumulation of raw materials and affect the screening effect. The cleaning nozzle cooperates with the cleaning block, and the nozzle can spray cleaning liquid to thoroughly remove the residual materials in the screening box. The electric slide is used to move in the screening box to drive the cleaning block and the cleaning wheel to ensure the comprehensiveness of the cleaning process.

[0020] Furthermore, the auxiliary unloading component includes a transmission block, a lifting block, an auxiliary motor and an auxiliary belt. The rotating rod and the transmission block are transmission connected, the transmission block and the lifting block are transmission connected, the transmission block is crescent-shaped, the lifting block and the transmission block are abutted, the auxiliary motor and the lifting block are tightly connected, the auxiliary motor and the auxiliary belt are transmission connected, and auxiliary ribs are provided on the auxiliary belt.

[0021] By adopting the above technical solution, the transmission block is connected to the lifting block through a rotating rod, and cooperates with the auxiliary motor drive to adjust the flow rate of the raw material to ensure that the raw material can pass through the screening plate stably. The auxiliary belt is used for smooth transportation of the material. The auxiliary motor drives the belt transmission to ensure smooth material flow. The auxiliary motor drives the auxiliary belt to adjust the material flow rate and feeding accuracy.

[0022] Control methods include: Step 1: Put the injection molding raw materials into the hopper, gather the injection molding raw materials in the center through the gathering plate on the hopper, and evenly arrange the injection molding raw materials through the first vibrator; Step 2: Start the vacuum pump in the suction mechanism, suck the injection molding raw materials through the suction gun, and further gather the raw materials on both sides through the gathering component. At the same time, the spacing motor controls the spacing between the gathering plate and the suction gun muzzle, and the pressure sensor and the descending plate detect the descending material surface of the injection molding raw materials. At the same time, the fan is used to supplement the insufficient or unstable suction force; Step 3: The injection molding raw materials are screened in multiple stages according to the particle size through the screening plate in the screening mechanism to provide classifications of different particle sizes; Step 4: Control the flow rate of the injection molding raw material by opening and closing the auxiliary screening plate in the auxiliary unloading assembly; Step 5: Drying and storage of particles of different sizes after classification are provided by the drying mechanism for subsequent use by external devices.

[0023] Compared with the prior art, the present invention has the following beneficial effects: The gathering component is mainly used to gather the injection molding raw materials in the hopper and guide them to the suction gun for suction. The gathering motor drives the rotating plate to rotate by fastening connection with the fixed plate. The rotating plate drives the gathering block to rotate by rotation to realize the function of gathering the injection molding raw materials. In the gathering component, the sliding block is connected to the fixed plate by sliding. During the gathering process, the sliding block can slide up and down in the fixed plate to adjust the distance between the gathering block and the suction gun, further improving the gathering efficiency. The auxiliary gathering motor drives the sliding block to move, and the auxiliary wheel transmission connection makes the displacement of the sliding block more precise. At the same time, the auxiliary motor ensures the smooth movement of the sliding block. The fan is fastened to the gathering plate and provides the additional suction required by the suction gun by wind boosting to prevent insufficient or unstable suction during the suction process. The descending plate is fastened to the suction gun to assist in controlling the flow speed of the raw materials to avoid too much or too little raw material entering the suction gun and ensure the stability of the suction process. The gathering component can effectively improve the working efficiency and reliability of the feeding system and reduce production stagnation caused by uneven suction or equipment failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the hopper structure of the present invention; Figure 3 It is a schematic diagram of the structure of the screening mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the screening plate of the present invention; Figure 5 It is a schematic diagram of the structure of the cyclone separator of the present invention; Figure 6 It is a schematic diagram of the structure of the suction mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the aggregation component of the present invention; Figure 8 It is a schematic diagram of the drying mechanism structure of the present invention; Fig. 9 This is a schematic diagram of the structure of the self-cleaning mechanism of the present invention; Fig.10 It is a schematic diagram of the structure of the auxiliary blanking component of the present invention.

[0025] In the figure: 1. screening mechanism; 11. screening plate; 1101. screening hole; 1102. inner flow surface; 1103. flow place; 12. screening box; 13. cyclone separator; 14. screening motor; 15. transmission belt; 16. second vibrator; 17. rotating rod; 18. auxiliary unloading assembly; 181. transmission block; 182. lifting block; 183. auxiliary motor; 184. auxiliary belt; 185. auxiliary rib; 19. screening plate; 110. connecting pipe; 111. first return pipe; 112. second return pipe; 2. suction mechanism; 21. suction gun; 22. gathering assembly; 221. gathering block; 222. gathering motor; 223. fixed Plate; 223, rotating plate; 224, sliding block; 225, auxiliary wheel; 226, auxiliary gathering motor; 227, fan; 228, pressure sensor; 229, descending plate; 23, suction pipe; 24, spacing wheel; 25, spacing block; 26, spacing motor; 27, vacuum pump; 3, drying mechanism; 31, drying box; 32, injection pipe; 33, preheating pipe; 34, circulation pump; 35, temperature and humidity sensor; 36, heating box; 4, hopper; 41, gathering plate; 42, first vibrator; 5, self-cleaning mechanism; 51, lifting hydraulic cylinder; 52, cleaning block; 53, cleaning wheel; 54, cleaning motor; 55, cleaning nozzle; 56, electric slide. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 - Fig.10 As shown, the present invention provides a vacuum suction feeding system and control method technical solution for injection molding raw materials: The feeding system includes a screening mechanism 1, a suction mechanism 2, a drying mechanism 3, a hopper 4 and a self-cleaning mechanism 5. The suction mechanism 2 is used to suck the injection molding raw materials in the hopper 4. The screening mechanism 1 is connected to the suction mechanism 2, the drying mechanism 3 is connected to the screening mechanism 1, and the self-cleaning mechanism 5 is tightly connected to the screening mechanism 1. The hopper 4 is barrel-shaped, and a gathering plate 41 is provided on the hopper 4. The gathering plate 41 is truncated cone-shaped, and a first vibrator 42 is installed on the gathering plate 41. The first vibrator 42 is arranged circumferentially around the gathering plate 41. The first vibrator 42 is used to make the injection molding raw materials in the hopper 4 have an upper end surface that is horizontal and evenly arranged inside.

[0028] By adopting the above technical solution, the core function of the feeding system is to ensure the uniform supply of injection molding raw materials and improve production efficiency through screening, suction, drying and other links. As the raw material storage part, the hopper 4 adopts a barrel-type structure and can accommodate a large amount of injection molding raw materials. A gathering plate 41 is installed on the top of the hopper 4. The gathering plate 41 is truncated cone-shaped and its design can guide the raw materials to be concentrated in the central position to prevent the raw materials from being unevenly distributed in the hopper 4. A first vibrator 42 is provided on the gathering plate 41. The vibrator is arranged circumferentially along the gathering plate 41. Through the vibration, the injection molding raw materials are evenly arranged in the hopper 4, and the fluidity of the raw materials is ensured to avoid the accumulation or uneven distribution of raw materials.

[0029] Furthermore, the screening mechanism 1 includes a screening plate 11, a screening box 12, a cyclone separator 13, a screening motor 14, a transmission belt 15, a second vibrator 16, a rotating rod 17 and an auxiliary unloading assembly 18. The screening box 12 is connected to the suction mechanism 2, the screening box 12 is connected to the cyclone separator 13, the cyclone separator 13 is connected to the drying mechanism 3, and the screening motor 14 is connected to the rotating rod 17 in a transmission connection, the rotating rod 17 is connected to the transmission belt 15 in a transmission connection, the rotating rod 17 is connected to the auxiliary unloading assembly 18 in a transmission connection, the second vibrator 16 is fastened to the screening plate 11, and the transmission belt 15 is in an eight-shaped shape.

[0030] By adopting the above technical scheme, the screening plate 11 is placed obliquely in the screening box 12, and the screening holes 1101 are gradually reduced from top to bottom to ensure that the injection molding materials of different particles are separated layer by layer in order of size. The screening plate 11 is provided with an inner flow surface 1102. When the injection molding raw materials flow through, the inclined surface design of the inner flow surface 1102 effectively controls the flow of particles to prevent the mixing of over-large or under-sized particles. The screening box 12 is the main container of the entire screening mechanism 1, and contains the screening plate 11, cyclone separator 13 and other components, which bear the flow and classification functions of the raw materials. By being connected with the suction mechanism 2, the flow of raw materials in the screening box 12 is controlled and orderly. The cyclone separator 13 uses the vortex effect of the air flow to separate smaller particles from larger particles, ensuring that particles of different sizes are subsequently dried and stored. The screening motor 14 drives the rotating rod 17, which drives the screening plate 11 to rotate through the transmission belt 15 to control the size of the flow 1103, thereby enhancing the efficiency of the material passing through the screening hole 1101 and making the screening effect more precise. The transmission belt 15 is arranged in an eight-shaped shape. The second vibrator 16 provides the necessary vibration effect by being fastened to the screening plate 11 to ensure that the raw materials on the screening plate 11 are fully screened, and the vibration method can effectively improve the screening efficiency of the raw materials. The rotating rod 17 is connected to the screening motor 14 and the transmission belt 15. The function of the rotating rod 17 is to drive the vibration of the screening plate 11 to make the screening effect more efficient. The auxiliary unloading component 18 is mainly connected to the rotating rod 17 through transmission to adjust the material flow rate to ensure that the screened material can smoothly enter the next processing link.

[0031] Furthermore, the screening mechanism 1 also includes a screening plate 19, a connecting pipe 110, a first reflux pipe 111 and a second reflux pipe 112. The screening plate 11 is tilted in the screening box 12. The screening plate 11 is provided with screening holes 1101, and the screening holes 1101 gradually decrease from top to bottom. The screening plate 11 is provided with an inner flow surface 1102, and the inner flow surface 1102 is an inclined surface. A flow point 1103 is provided between the screening plates 11, and the flow point 1103 is used to control the particle size of the injection molding raw material flowing through. The screening box 12 is connected to the connecting pipe 110, and the connecting pipe 110 is connected to the cyclone separator 13. The connecting pipe 110 is gourd-shaped, and the screening plate 19 is located at the lower part of the cyclone separator 13. The first reflux pipe 111 and the second reflux pipe 112 are both connected to the screening box 12.

[0032] By adopting the above technical solution, the main function of the screening mechanism 1 is to classify the particle size of the injection molding raw materials through a series of screening, reflux and separation processes. The screening plate 11 is placed obliquely in the screening box 12 to ensure that the material can slide smoothly when passing through the screening plate 11. The screening plate 11 is provided with a series of screening holes 1101 of gradually decreasing size, and these screening holes 1101 are gradually reduced from top to bottom, effectively separating raw materials of different particle sizes. The design of the screening plate 11 is also provided with an inner flow surface 1102, which is an inclined surface, further optimizes the material flow process, avoids the stagnation of the material during the screening process, and thus improves the screening efficiency. During the screening process, the material will flow along the flow part 1103 of the screening plate 11. The function of the flow part 1103 is to further control the classification of the injection molding raw materials by adjusting the relationship between the flow rate and the particle size. Through these designs, the screening mechanism 1 can accurately separate materials of different particle sizes according to the particle size of the injection molding raw materials. The screening box 12 is connected to the connecting pipe 110 to ensure that the screened material can quickly flow into the cyclone separator 13 for further processing. The connecting pipe 110 is a gourd-shaped structure, which serves as a connection between the screening box 12 and the cyclone separator 13 to ensure smooth flow of materials. The sieve plate 19 is located at the bottom of the cyclone separator 13, further ensuring the flow direction and flow rate of the material. The first return pipe 111 and the second return pipe 112 are connected to the screening box 12 to return the material that fails to pass through the screening hole 1101 during the screening process to the raw material box for repeated screening.

[0033] Furthermore, the suction mechanism 2 includes a suction gun 21, a gathering component 22, a suction pipe 23, a spacing wheel 24, a spacing block 25, a spacing motor 26 and a vacuum pump 27. The suction gun 21 is fastened to the gathering component 22, the suction pipe 23 is communicated with the suction gun 21, the suction pipe 23 is communicated with the vacuum pump 27, the vacuum pump 27 is communicated with the screening box 12, the spacing block 25 is fastened to the hopper 4, the spacing motor 26 is fastened to the spacing block 25, the spacing motor 26 is transmission-connected to the spacing wheel 24, the spacing wheel is transmission-connected to the suction gun 21, the suction gun 21 is vertically placed, and the spacing motor 26 is used to control the spacing between the gathering plate 41 and the muzzle of the suction gun 21.

[0034] By adopting the above technical solution, the suction gun 21 is placed vertically and can directly absorb the injection molding raw materials in the hopper 4. The suction gun 21 is tightly connected to the gathering component 22, ensuring the stability of the suction gun 21 and the precise control of the raw material absorption process. The gathering component 22 is composed of a gathering block 221, a gathering motor 222, a fixed plate 223, a rotating plate 223, etc., which is responsible for concentrating the injection molding raw materials to the entrance of the suction gun 21. The gathering motor 222 drives the rotation of the fixed plate 223 to gather the raw materials and make them concentrate into the suction gun 21. The suction pipe 23 is connected to the vacuum pump 27 through the suction gun 21 and the screening box 12. The spacing wheel 24 and the spacing block 25 are connected to ensure that the sucked raw materials can be smoothly transported to the subsequent links. The spacing wheel 24 and the spacing block 25 are controlled by the spacing motor 26. The spacing wheel 24 and the spacing block 25 adjust the distance between the gathering plate 41 and the muzzle of the suction gun 21 to ensure that the suction process is smooth and there is no problem of excessive suction or blockage. The spacing motor 26 adjusts the spacing wheel 24 and the spacing block 25 to control the distance between the gathering plate 41 and the suction gun 21 to ensure the accuracy and efficiency of the suction process. After the vacuum pump 27 is started, the raw materials in the hopper 4 are sucked through the suction gun 21 and transported to the screening mechanism 1. The vacuum pump 27 is connected to the screening box 12 to ensure stable flow of raw materials.

[0035] Furthermore, the aggregation component 22 includes an aggregation block 221, an aggregation motor 222, a fixed plate 223, a rotating plate 223, a sliding block 224, an auxiliary wheel 225, an auxiliary aggregation motor 226, a fan 227, a pressure sensor 228 and a descending plate 229. The aggregation block 221 is fastened to the suction gun 21, the fixed plate 223 is fastened to the aggregation block 221, the rotating plate 223 is rotatably connected to the fixed plate 223, the aggregation motor 222 is fastened to the fixed plate 223, the sliding block 224 is slidably connected to the fixed plate 223, the auxiliary aggregation motor 226 is fastened to the sliding block 224, the auxiliary aggregation motor 226 is transmission-connected to the auxiliary wheel 225, the fan 227 is fastened to the aggregation plate 41, the fan 227 is used to align the suction gun 21 to assist in pressurization, the descending plate 229 is fastened to the suction gun 21, and the pressure sensor 228 is fastened to the descending plate 229.

[0036] By adopting the above technical solution, the gathering component 22 is mainly used to gather the injection molding raw materials in the hopper 4 and guide them to the suction gun 21 for suction. The gathering block 221 is fixed to the suction gun 21 by a fastening connection to ensure that the suction gun 21 always maintains a stable position to avoid displacement during the suction process. The gathering motor 222 drives the rotating plate 223 to rotate by fastening with the fixed plate 223. The rotating plate 223 drives the gathering block 221 to rotate by rotating, thereby realizing the function of gathering the injection molding raw materials. In the gathering component 22, the sliding block 224 is connected to the fixed plate 223 by sliding. During the gathering process, the sliding block 224 can slide up and down in the fixed plate 223, thereby adjusting the distance between the gathering block 221 and the suction gun 21, and further improving the gathering efficiency. The auxiliary gathering motor 226 drives the sliding block 224 to move, and is connected through the auxiliary wheel 225 to make the displacement of the sliding block 224 more accurate. At the same time, the auxiliary motor 183 ensures the smooth movement of the sliding block 224. The fan 227 is tightly connected to the gathering plate 41, and provides the additional suction required by the suction gun 21 by means of wind pressure boosting, so as to prevent the situation of insufficient or unstable suction during the suction process. The design of the fan 227 ensures the guidance of the airflow when the gathering block 221 is working, and further enhances the gathering effect of the raw materials. The descending plate 229 is tightly connected to the suction gun 21 to assist in controlling the flow speed of the raw materials, avoid too much or too little raw materials entering the suction gun 21, and ensure the stability of the suction process. At the same time, the pressure sensor 228 is connected to the descending plate 229, which can monitor the descending speed of the raw materials and the position of the material surface in real time, ensure that the raw material surface is kept in the best position during the suction process, avoid the problem of uneven suction or unstable suction caused by excessive or too low pressure, and realize the efficient gathering and precise suction of the injection molding raw materials. Through the cooperation of the gathering motor 222, the rotating plate 223 and the sliding block 224, the working distance and suction of the suction gun 21 can be accurately adjusted while ensuring the gathering effect, avoiding production problems caused by uneven distribution of raw materials or unstable suction. The boosting effect provided by the fan 227 makes the suction process more efficient, and the real-time monitoring of the pressure sensor 228 ensures the smoothness and stability of the entire process. Ultimately, the aggregation component 22 can effectively improve the working efficiency and reliability of the feeding system and reduce production stagnation caused by uneven suction or equipment failure.

[0037] Furthermore, the drying mechanism 3 includes a drying box 31, an injection pipe 32, a preheating pipe 33, a circulation pump 34, a temperature and humidity sensor 35 and a heating box 36. The injection pipe 32 is connected to the drying box 31, the injection pipe 32 is used for an external injection molding device, the preheating pipe 33 is firmly connected to the drying box 31, the preheating pipe 33 is connected to the circulation pump 34, the circulation pump 34 is connected to the preheating pipe 33, the preheating pipe 33 is connected to the heating box 36, and the temperature and humidity sensor 35 is firmly connected to the drying box 31.

[0038] By adopting the above technical solution, the main function of the drying box 31 is to dry the screened materials. The injection pipe 32 is connected to the external injection molding device to ensure that the injection molding materials can be processed through the drying box 31. The preheating pipe 33 transports hot air to the drying box 31 through the circulation pump 34 to improve the drying efficiency. The heating box 36 provides a stable heat source to ensure the uniformity of material drying. The temperature and humidity sensor 35 is used to monitor the temperature and humidity in the drying box 31 in real time to ensure that the raw materials are dried under suitable conditions. The circulation pump 34 ensures the circulation of the heating liquid in the drying box 31, helps the hot air to be evenly distributed, and enhances the drying effect.

[0039] Furthermore, the self-cleaning mechanism 5 includes a lifting hydraulic cylinder 51, a cleaning block 52, a cleaning wheel 53, a cleaning motor 54, a cleaning nozzle 55 and an electric slide. The electric slide is fastened to the screening box 12, the electric slide is transmission-connected to the lifting hydraulic cylinder 51, the lifting hydraulic cylinder 51 is transmission-connected to the cleaning block 52, the cleaning motor 54 is fastened to the cleaning block 52, the cleaning motor 54 is transmission-connected to the cleaning wheel 53, and the cleaning nozzle 55 is fastened to the cleaning block 52.

[0040] By adopting the above technical scheme, the lifting hydraulic cylinder 51 and the cleaning block 52 drive the cleaning block 52 to move up and down in the screening box 12 through the lifting hydraulic cylinder 51 to clean the screening plate 11 and other components. The cleaning motor 54 and the cleaning wheel 53 drive the cleaning wheel 53 to rotate to clean the inside of the screening box 12 to avoid accumulation of raw materials and affect the screening effect. The cleaning nozzle 55 cooperates with the cleaning block 52, and the nozzle can spray cleaning liquid to thoroughly remove the residual materials in the screening box 12. The electric slide is used to move in the screening box 12 to drive the cleaning block 52 and the cleaning wheel 53 to ensure the comprehensiveness of the cleaning process.

[0041] Furthermore, the auxiliary unloading component 18 includes a transmission block 181, a lifting block 182, an auxiliary motor 183 and an auxiliary belt 184. The rotating rod 17 is connected to the transmission block 181, the transmission block 181 is connected to the lifting block 182, the transmission block 181 is crescent-shaped, the lifting block 182 is abutted against the transmission block 181, the auxiliary motor 183 is fixedly connected to the lifting block 182, the auxiliary motor 183 is connected to the auxiliary belt 184, and the auxiliary belt 184 is provided with an auxiliary rib 185.

[0042] By adopting the above technical solution, the transmission block 181 is connected to the lifting block 182 through the rotating rod 17, and cooperates with the auxiliary motor 183 to drive the flow rate of the raw material to ensure that the raw material can stably pass through the screening plate 11. The auxiliary belt 184 is used for smooth transportation of the material. The auxiliary motor 183 drives the belt transmission to ensure smooth flow of the material. The auxiliary motor 183 drives the auxiliary belt 184 to adjust the material flow rate and feeding accuracy.

[0043] The working principle of the present invention is as follows: after the raw materials enter the screening box 12 through the hopper 4, the screening plate 11 classifies the raw materials according to the particle size, and the smaller particles are connected to the drying mechanism 3 through the cyclone separator 13 for subsequent drying and processing. The cooperation of the second vibrator 16 and the screening motor 14 enables the raw materials on the screening plate 11 to be effectively vibrated, ensuring the accuracy of particle classification, avoiding material accumulation and uneven screening, and after starting the vacuum pump 27, the suction gun 21 starts to absorb the raw materials in the hopper 4, and concentrates the materials through the gathering component 22 to avoid uneven distribution of the raw materials. The spacing motor 26 ensures a smooth suction process by adjusting the distance between the gathering plate 41 and the suction gun 21, and detects the material surface through the pressure sensor 228 to avoid uneven suction. The cooperation of the cleaning motor 54 and the cleaning wheel 53 can effectively remove the residual material in the screening mechanism 1, ensure the cleanliness and efficient operation of the equipment, reduce the workload of manual cleaning, and improve the degree of automation of the system. The auxiliary unloading component 18, driven by the auxiliary motor 183, accurately controls the flow rate of the raw materials to avoid accumulation of raw materials after screening or excessive flow rate, thereby ensuring the smooth progress of subsequent processing.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A vacuum suction feeding system for injection molding raw materials, characterized in that: The feeding system comprises a screening mechanism (1), a suction mechanism (2), a drying mechanism (3), a hopper (4) and a self-cleaning mechanism (5); the suction mechanism (2) is used to suck the injection molding raw material in the hopper (4); the screening mechanism (1) is connected to the suction mechanism (2); the drying mechanism (3) is connected to the screening mechanism (1); the self-cleaning mechanism (5) is tightly connected to the screening mechanism (1); the hopper (4) is barrel-shaped; a gathering plate (41) is provided on the hopper (4); the gathering plate (41) is truncated; a first vibrator (42) is installed on the gathering plate (41); the first vibrator (42) is arranged circumferentially around the gathering plate (41); the first vibrator (42) is used to arrange the injection molding raw material in the hopper (4) so ​​that the upper end surface is horizontal and the inside is evenly arranged.

2. The vacuum suction feeding system for injection molding raw materials according to claim 1, characterized in that: The screening mechanism (1) comprises a screening plate (11), a screening box (12), a cyclone separator (13), a screening motor (14), a transmission belt (15), a second (16) rotating rod (17) and an auxiliary material discharge assembly (18); the screening box (12) is connected to the material suction mechanism (2); the screening box (12) is connected to the cyclone separator (13); the cyclone separator (13) is connected to the drying mechanism (3); the screening, the screening motor (14) and the rotating rod (17) are transmission-connected; the rotating rod (17) and the transmission belt (15) are transmission-connected; the rotating rod (17) and the auxiliary material discharge assembly (18) are transmission-connected; the second vibrator (16) and the screening plate (11) are tightly connected; and the transmission belt (15) is in an eight-shaped shape.

3. The vacuum suction feeding system for injection molding raw materials according to claim 2, characterized in that: The screening mechanism (1) further comprises a sieve plate (19) connecting pipe (110), a first return pipe (111) and a second return pipe (112); the sieve plate (11) is placed obliquely in the sieve box (12); sieve holes (1101) are provided on the sieve plate (11); the sieve holes (1101) decrease in size from top to bottom; an inner flow surface (1102) is provided on the sieve plate (11); the inner flow surface (1102) is an inclined surface; the sieve plate (11 ) is provided with a flow place (1103), the flow place (1103) is used to control the particle size of the injection molding raw material flowing through, the screening box (12) is connected to the connecting pipe (110), the connecting pipe (110) is connected to the cyclone separator (13), the connecting pipe (110) is gourd-shaped, the screening plate (19) is located at the bottom of the cyclone separator (13), and the first return pipe (111) and the second return pipe (112) are both connected to the screening box (12).

4. The vacuum suction feeding system for injection molding raw materials according to claim 3, characterized in that: The suction mechanism (2) comprises a suction gun (21), a gathering component (22), a suction pipe (23), a spacing wheel (24), a spacing block (25), a spacing motor (26) and a vacuum pump (27); the suction gun (21) and the gathering component (22) are tightly connected; the suction pipe (23) and the suction gun (21) are in communication; the suction pipe (23) and the vacuum pump (27) are in communication; the vacuum pump (27) and the screening box (12) are in communication; the spacing block (25) and the hopper (4) are tightly connected; the spacing motor (26) and the spacing block (25) are tightly connected; the spacing motor (26) and the spacing wheel (24) are in transmission connection; the indirect wheel and the suction gun (21) are in transmission connection; the suction gun (21) is placed vertically; and the spacing motor (26) is used to control the distance between the gathering plate (41) and the muzzle of the suction gun (21).

5. The vacuum suction feeding system for injection molding raw materials according to claim 4, characterized in that: The gathering assembly (22) comprises a gathering block (221), a gathering motor (222), a fixed plate (223), a rotating plate (223), a sliding block (224), an auxiliary wheel (225), an auxiliary gathering motor (226), a fan (227), a pressure sensor (228) and a descending plate (229); the gathering block (221) and the suction gun (21) are fastened together, the fixed plate (223) and the gathering block (221) are fastened together, the rotating plate (223) and the fixed plate (223) are rotatably connected, and the gathering motor (22 2) is tightly connected to the fixed plate (223), the sliding block (224) is slidably connected to the fixed plate (223), the auxiliary focusing motor (226) is tightly connected to the sliding block (224), the auxiliary focusing motor (226) is transmission-connected to the auxiliary wheel (225), the fan (227) is tightly connected to the focusing plate (41), the fan (227) is used to align the suction gun (21) to assist in pressurization, the descending plate (229) is tightly connected to the suction gun (21), and the pressure sensor (228) is tightly connected to the descending plate (229).

6. The vacuum suction feeding system for injection molding raw materials according to claim 5, characterized in that: The drying mechanism (3) comprises a drying box (31), an injection pipe (32), a preheating pipe (33), a circulation pump (34), a temperature and humidity sensor (35) and a heating box (36); the injection pipe (32) is connected to the drying box (31); the injection pipe (32) is used for connecting an external injection molding device; the preheating pipe (33) is firmly connected to the drying box (31); the preheating pipe (33) is connected to the circulation pump (34); the circulation pump (34) is connected to the preheating pipe (33); the preheating pipe (33) is connected to the heating box (36); and the temperature and humidity sensor (35) is firmly connected to the drying box (31).

7. The vacuum suction feeding system for injection molding raw materials according to claim 6, characterized in that: The self-cleaning mechanism (5) comprises a lifting hydraulic cylinder (51), a cleaning block (52), a cleaning wheel (53), a cleaning motor (54), a cleaning nozzle (55) and an electric slide (56); the electric slide (56) is fixedly connected to the screening box (12); the electric slide (56) is transmission-connected to the lifting hydraulic cylinder (51); the lifting hydraulic cylinder (51) is transmission-connected to the cleaning block (52); the cleaning motor (54) is fixedly connected to the cleaning block (52); the cleaning motor (54) is transmission-connected to the cleaning wheel (53); and the cleaning nozzle (55) is fixedly connected to the cleaning block (52).

8. The vacuum suction feeding system for injection molding raw materials according to claim 7, characterized in that: The auxiliary unloading component (18) comprises a transmission block (181), a lifting block (182), an auxiliary motor (183) and an auxiliary belt (184); the rotating rod (17) and the transmission block (181) are transmission-connected; the transmission block (181) and the lifting block (182) are transmission-connected; the transmission block (181) is crescent-shaped; the lifting block (182) and the transmission block (181) are abutted; the auxiliary motor (226) (183) and the lifting block (182) are fastened and connected; the auxiliary motor (183) and the auxiliary belt (184) are transmission-connected; and the auxiliary belt (184) is provided with an auxiliary rib (185).

9. The control method of the vacuum suction feeding system for injection molding raw materials according to claim 8, characterized in that: The control method comprises: Step 1: placing the injection molding raw material into the hopper (4), centrally gathering the injection molding raw material using a gathering plate (41) on the hopper (4), and evenly arranging the injection molding raw material using a first vibrator (42); Step 2: Start the vacuum pump (27) in the suction mechanism (2), suck the injection molding raw material through the suction gun (21), and further gather the raw materials on both sides through the gathering component (22), and at the same time control the distance between the gathering plate (41) and the muzzle of the suction gun (21) through the spacing motor (26), and detect the descending material surface of the injection molding raw material through the pressure sensor (228) and the descending plate (229), and at the same time supplement the insufficient or unstable suction force through the fan (227); Step 3: The injection molding raw material is screened in multiple stages according to the particle size by the screening plate (11) in the screening mechanism (1), thereby providing classifications of different particle sizes; Step 4: Controlling the flow rate of the injection molding raw material by opening and closing the auxiliary screening plate (11) in the auxiliary material discharge assembly (18); Step 5: Drying and storage of particles of different sizes after classification are provided by the drying mechanism (3) for subsequent use by external devices.

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