Feeding machine with high-efficiency filtering structure

Abstract

The utility model discloses a feeding machine with high -efficient filter structure relates to injection moulding production auxiliary equipment technical field, aims at solving the problem of poor filtering effect of existing feeding machine, need additional front -end processing, low production efficiency. It includes feeding machine body, feed pipe, feed hopper, support, still is equipped with door type frame, filter drum, coarse filter plate and guide plate. The filter drum circumferential side wall is fine filter screen, sets up obliquely downward, and the inside coaxial power shaft is equipped, and the power shaft circumferential side wall is evenly distributed with driving rod, and the fixed ring cooperation of driving rod and filter drum discharge port outside wall provides reliable framework structure for fine filter screen, and the power mechanism drive power shaft on door type frame, and the coarse filter plate is installed in the feed hopper inside upside, and the bottom is coarse filter screen. Power mechanism contains motor, power gear and driven gear, and the coarse filter plate is articulated and is equipped with vertical reciprocating movement mechanism, and the mechanism contains driving ring, synchronous rod and eccentric shaft. The utility model realizes the filter of many particle sizes sundries, promotes the efficiency and stability, and reduces the cost.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for injection molding production, and in particular to a feeding machine with a high-efficiency filtration structure. Background Technology

[0002] In the injection molding process, the injection molding machine needs to continuously and stably obtain plastic granule raw materials. As a core conveying device, the negative pressure vacuum feeder, with its advantages of good sealing and high conveying efficiency, is widely used in the automated conveying of plastic granules from storage devices to the injection molding machine hopper. Existing negative pressure vacuum feeders typically consist of a feeder body, a suction pipe, and a feed hopper connected to the end of the suction pipe. The feeder body integrates a dust filter to filter airborne dust and impurities during the negative pressure suction process, preventing dust from entering the injection molding machine and affecting product quality or damaging internal components.

[0003] However, in actual production scenarios, plastic granules are easily contaminated with various impurities during storage and transportation. These include fragments and powder clumps with particle sizes much smaller than normal plastic granules, or hard plastic lumps and metallic impurities with particle sizes larger than normal granules. Existing feeders rely solely on internal dust filters for filtration, which has significant limitations: Firstly, the filtration precision and structural design of the dust filters are only suitable for fine dust particles and cannot handle smaller fragments or larger impurities. This causes these impurities to enter the injection molding machine along with the plastic granules, potentially clogging the feed inlet and screw, and causing impurities and molding defects in the molded products, severely impacting the product qualification rate. Secondly, to solve these problems, the existing production process requires an additional pre-screening step, i.e., pre-treating the plastic granules manually or with independent screening equipment before feeding them into the feeder. This method not only increases production steps and labor costs but also prolongs the raw material transportation cycle and reduces overall production efficiency. Furthermore, the screening effect of independent screening equipment is easily affected by factors such as particle humidity and flow rate, making it difficult to guarantee screening stability and still posing a risk of impurity leakage.

[0004] In summary, existing negative pressure vacuum feeders for injection molding machines lack a targeted integrated filtration and screening structure, resulting in poor filtration performance, the need for additional pre-treatment, and low production efficiency when dealing with impurities of different particle sizes in plastic granules. An improvement solution is urgently needed to address these technical deficiencies. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a feeding machine with an integrated automatic filtering and screening structure in the feeding hopper of a feeding machine, which can filter impurities of different particle sizes, improve filtration efficiency and filtration effect, and has a high-efficiency filtration structure.

[0006] This utility model discloses a feeding machine with a high-efficiency filtration structure, comprising a feeding machine body, an inlet pipe connected to the input end of the feeding machine body, an inlet hopper connected to the input end of the inlet pipe, a support bracket for stable support of the inlet hopper, and further comprising...

[0007] A portal frame, with two vertical plates symmetrically installed on one side of the top of the feed hopper;

[0008] The filter barrel has a circumferential sidewall set as a fine filter screen to filter impurities smaller than the particle size. The fine filter screen is inclined downward from the feed inlet to the discharge outlet. A fixing ring is fixedly fitted on the outer sidewall of the discharge outlet of the fine filter screen. A power shaft is coaxially arranged inside the fine filter screen. Several driving rods are evenly distributed on the circumferential sidewall of the power shaft. The outer ends of the driving rods all pass through the filter screen and connect to the inner sidewall of the fixing ring. A through hole is provided through the sidewall of the top of the portal frame facing the fine filter screen. The power shaft is installed in the through hole through the bearing and extends through the through hole to the other side of the portal frame. A power mechanism for driving the power shaft to rotate is provided on the portal frame.

[0009] The coarse filter plate is installed on the upper side inside the feed hopper, and a coarse filter screen is provided at the bottom of the coarse filter plate to filter out impurities larger than the particle size of the material.

[0010] Guide plates are provided between the gantry frames to transfer the granular material in the filter barrel to the coarse filter plate.

[0011] Furthermore, the power mechanism includes a motor, which is mounted on the top of the gantry frame. A power gear is coaxially arranged at the output end of the motor, and a driven gear that meshes with the power gear is fixedly mounted on the power shaft. The diameter of the power gear is smaller than that of the driven gear.

[0012] Furthermore, the two ends of the coarse filter plate away from the gantry frame are hinged to the two vertical side walls opposite to the feed hopper, and a vertical reciprocating movement mechanism is provided at the top of the other side of the coarse filter plate.

[0013] Furthermore, the vertical reciprocating movement mechanism includes a drive ring, and two synchronizing rods are symmetrically arranged at the bottom of the outer circumference of the drive ring. The bottom ends of the two synchronizing rods are respectively connected to the top end of the coarse filter plate on the side away from the hinge. An eccentric shaft is provided on the side wall of the drive ring, which is facing the power shaft. The eccentric shaft passes through the drive ring and slides in contact with the drive ring. The eccentric shaft is mounted on the power shaft through a bearing.

[0014] Furthermore, a feeding pipe is coaxially provided at the feed end of the filter barrel. The diameter of the feeding pipe is the same as that of the filter barrel. A baffle is provided on the inner wall of the output side of the feeding pipe, and several sliding holes are provided through the edge of the baffle.

[0015] Furthermore, a support plate is installed on the side of the bracket facing the filter barrel, and a collection box for collecting filtered debris from the filter barrel is placed on top of the support plate.

[0016] Furthermore, several reinforcing ribs are evenly distributed on the annular sidewall of the fixed ring facing the feeding tube, and both the feeding tube and the fine filter screen are connected to the reinforcing ribs.

[0017] Furthermore, an auxiliary support plate is provided on the bottom end of the support plate away from the bracket.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. Solve the problem of filtering multi-sized impurities: Through the dual filtration design of fine and coarse filters, the fine filter can filter debris and powder clumps smaller than the particle size, while the coarse filter can intercept plastic lumps and metal impurities larger than the particle size. This overcomes the limitations of existing feeders that rely solely on dust filters, effectively preventing equipment blockage and product defects caused by impurities entering the injection molding machine, and significantly improving the pass rate of injection molded products.

[0020] 2. Improved Filtration Efficiency and Structural Stability: The fine filter screen of the filter barrel is inclined downwards from the inlet to the outlet. Together with the power shaft and drive rod, the drive rod and fixing ring provide a reliable skeleton structure for the fine filter screen, effectively preventing deformation due to particle impact or long-term use, ensuring the stability of the filtration channel. Simultaneously, the power shaft drives the entire skeleton structure to rotate, promoting uniform flow of particles within the fine filter screen and preventing localized particle accumulation and clogging, ensuring continuous and efficient filtration. The coarse filter plate achieves reciprocating oscillation through a vertical reciprocating mechanism, enhancing the screening effect of the coarse filter screen on particles, reducing impurity residue, and further improving overall filtration stability.

[0021] 3. Integrated design reduces production costs: The filter structure is directly integrated into the feed hopper of the feeder, eliminating the need for additional manual screening processes or independent screening equipment, shortening the raw material transportation cycle, and reducing labor and equipment investment costs; moreover, the power mechanism drives the filter barrel to rotate and the coarse filter plate to shake through gear transmission, requiring only a single motor to achieve dual filtration, simplifying the structure while reducing energy consumption.

[0022] 4. Optimized feeding and debris collection process: The baffle and sliding hole design in the feeding pipe can control the speed and flow rate of the granules entering the filter barrel, avoiding a large amount of granules rushing in at once and affecting the filtration effect; the support plate on the bracket works in conjunction with the collection box to collect the debris filtered out by the fine filter screen in a timely manner, facilitating subsequent cleaning and keeping the production environment clean; the setting of reinforcing ribs and auxiliary support plates enhances the structural stability of the filter barrel and the load-bearing capacity of the support plate, respectively, and extends the service life of the equipment. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the installation structure of the baffle of this utility model;

[0025] Figure 3 This is the utility model Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0026] The following are labels in the attached diagram: 1. Feed pipe; 2. Feed hopper; 3. Support frame; 4. Gantry frame; 5. Fine filter screen; 6. Fixing ring; 7. Drive shaft; 8. Drive rod; 9. Coarse filter plate; 10. Coarse filter screen; 11. Motor; 12. Drive gear; 13. Driven gear; 14. Drive ring; 15. Synchronizing rod; 16. Eccentric shaft; 17. Feed pipe; 18. Baffle; 19. Slide hole; 20. Support plate; 21. Collection box; 22. Reinforcing rib; 23. Auxiliary support plate; 24. Guide plate. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] like Figures 1 to 3 As shown, the feeding machine with a high-efficiency filtration structure of this utility model includes a feeding machine body, an inlet pipe 1 connected to the input end of the feeding machine body, an inlet hopper 2 connected to the input end of the inlet pipe 1, a support bracket 3 for stable support of the inlet hopper 2, and also includes...

[0029] The gantry frame 4 has two vertical plates symmetrically installed on one side of the top of the feed hopper 2;

[0030] The filter barrel has a fine filter screen 5 on its circumferential sidewall for filtering impurities smaller than the particle size of the material. The fine filter screen 5 is inclined downward from the feed inlet to the discharge outlet. A fixing ring 6 is fixedly fitted on the outer sidewall of the discharge outlet of the fine filter screen 5. A power shaft 7 is coaxially arranged inside the fine filter screen 5. Several driving rods 8 are evenly distributed on the circumferential sidewall of the power shaft 7. The outer ends of the driving rods 8 all pass through the filter screen and connect to the inner sidewall of the fixing ring 6. A through hole is provided through the sidewall of the gantry frame 4 facing the fine filter screen 5. The power shaft 7 is installed in the through hole through the bearing and extends through the through hole to the other side of the gantry frame 4. A power mechanism for driving the power shaft 7 to rotate is provided on the gantry frame 4.

[0031] Coarse filter plate 9 is installed on the upper side inside the feed hopper 2. A coarse filter screen 10 is provided at the bottom of the coarse filter plate 9 to filter out impurities larger than the particle size of the material.

[0032] A guide plate 24 is provided between the portal frames 4 to transfer the granular material in the filter barrel to the coarse filter plate 9;

[0033] In this embodiment,

[0034] The main body of the feeding machine: As the core conveying equipment, its purpose is to transport the filtered plastic granules to the injection molding machine. Its function is to realize the automated conveying of raw materials from the feed hopper 2 to the injection molding machine. It is the power output and conveying core of the entire feeding process.

[0035] Feed pipe 1: Its purpose is to connect the feeder body and the feed hopper 2. Its function is to form a conveying channel for plastic granules, ensuring that the qualified granules filtered in the feed hopper 2 can smoothly enter the feeder body.

[0036] Feed hopper 2: Its purpose is to temporarily store the plastic granules to be filtered and to provide installation space for the coarse filter plate 9. Its function is to receive raw materials, cooperate with the coarse filter plate 9 to complete secondary filtration, and at the same time provide transition space for the granules to enter the feed pipe 1.

[0037] Support bracket 3: Its purpose is to support the feed hopper 2, and its function is to ensure the stability of the feed hopper 2 throughout the entire use process, so as to prevent the feed hopper 2 from shifting or tipping over due to factors such as equipment vibration and particle impact, and to provide a stable installation foundation for the subsequent filter structure.

[0038] Portal frame 4: Its purpose is to install the filter barrel and the power mechanism. Its function is to provide a stable support frame for components such as the filter barrel, the power shaft 7 and the motor 11, to ensure that the filter barrel is fixed in position during operation, and to provide reasonable space for the installation of the power mechanism to ensure smooth power transmission.

[0039] Filter canister: Its purpose is to carry the fine filter screen 5 and achieve primary filtration. Its function is to hold the plastic particles to be filtered, so that the particles can fully contact the fine filter screen 5 inside the canister, and complete the filtration of impurities smaller than the particle size. It is the core carrier for primary filtration.

[0040] Fine filter screen 5: Its purpose is to filter impurities smaller than the particle size in plastic granules. Its function is to intercept small impurities such as debris and powder agglomerates, preventing them from entering subsequent stages with the granules, and ensuring that the granules entering the coarse filter plate 9 undergo preliminary screening of small impurities first.

[0041] Fixing ring 6: Its purpose is to be fitted on the outer wall of the outlet of fine filter screen 5. Its functions are: first, to cooperate with the driving rod 8 to form the skeleton structure of fine filter screen 5 and prevent fine filter screen 5 from deforming; second, to fix the shape of the outlet of fine filter screen 5 and ensure that the granules can flow out of the outlet stably, and avoid the discharge obstruction caused by the deformation of fine filter screen 5.

[0042] The purpose of the drive shaft 7 is to install the drive rod 8 and transmit power. Its functions are: first, to provide a mounting carrier for the drive rod 8 and to construct a skeleton structure through the evenly distributed drive rod 8; second, to rotate under the drive of the power mechanism, so as to drive the skeleton structure and the fine filter screen 5 to rotate synchronously, and to push the granules to flow in the fine filter screen 5. At the same time, it provides installation and rotation support for the eccentric shaft 16.

[0043] Drive rod 8: Its purpose is to connect the drive shaft 7 and the fixed ring 6. Its function is to cooperate with the fixed ring 6 to form a reliable skeleton structure for the fine filter screen 5, preventing the fine filter screen 5 from deforming under the impact of particles, gravity or long-term use, and ensuring the stability of the filter pore size and overall shape of the fine filter screen 5.

[0044] Bearing at power shaft 7: Its purpose is to be installed between the top through hole of the portal frame 4 and the power shaft 7. Its function is to reduce the friction between the power shaft 7 and the portal frame 4 when the power shaft 7 rotates, reduce power loss, ensure smooth rotation of the power shaft 7, avoid jamming or damage to the power shaft 7 due to excessive friction, and ensure the stable operation of the frame structure.

[0045] Power mechanism: Its purpose is to provide power for the rotation of the power shaft 7. Its function is to output power through the motor 11 and drive the power shaft 7 to rotate through gear transmission. It is the power source for the rotation of the entire filter barrel skeleton structure and the flow of granules.

[0046] Guide plate 24: Guide plate 24 can smoothly guide the granules filtered by fine filter screen 5 to the top of coarse filter screen 10.

[0047] As a preferred embodiment of the above, the power mechanism includes a motor 11, which is mounted on the top of the gantry frame 4. A power gear 12 is coaxially arranged at the output end of the motor 11, and a driven gear 13 that meshes with the power gear 12 is fixedly mounted on the power shaft 7. The diameter of the power gear 12 is smaller than the diameter of the driven gear 13.

[0048] In this embodiment,

[0049] Motor 11: Its purpose is to provide power. Its function is to serve as the core power source of the power mechanism. It outputs torque to drive the power gear 12 to rotate, providing initial power for the operation of the power shaft 7, the frame structure and the reciprocating movement mechanism of the coarse filter plate 9. It is the starting point of the entire equipment power system.

[0050] Power gear 12: Its purpose is to transmit power to motor 11. Its function is to connect coaxially with the output end of motor 11 and transmit the torque of motor 11 to driven gear 13. Power transmission is achieved through gear meshing. At the same time, because its own diameter is smaller than that of driven gear 13, it plays a role in speed reduction and adjusts the speed of power shaft 7.

[0051] Driven gear 13: Its purpose is to receive the power of the drive gear 12 and drive the drive shaft 7 to rotate. Its function is to be mounted on the drive shaft 7 and mesh with the drive gear 12 to transmit power to the drive shaft 7. It works with the drive gear 12 to achieve speed reduction transmission, so that the drive shaft 7 rotates at a suitable speed, which ensures the smooth flow of the granules and avoids damage to the equipment due to excessive speed.

[0052] As a preferred embodiment of the above, the two ends of the coarse filter plate 9 on the side away from the gantry frame 4 are hinged to the two vertical side walls opposite to the feed hopper 2, and a vertical reciprocating movement mechanism is provided at the top of the other side of the coarse filter plate 9.

[0053] The vertical reciprocating movement mechanism includes a drive ring 14. Two synchronous rods 15 are symmetrically arranged at the bottom of the outer circumference of the drive ring 14. The bottom ends of the two synchronous rods 15 are respectively connected to the top of the side of the coarse filter plate 9 away from the hinge. An eccentric shaft 16 is provided on the side wall of the drive ring 14 of the power shaft 7. The eccentric shaft 16 passes through the drive ring 14 and slides in contact with the drive ring 14. The eccentric shaft 16 is mounted on the power shaft 7 by bearings.

[0054] In this embodiment,

[0055] Coarse filter plate 9: Its purpose is to install the coarse filter screen 10 and carry the granules that have undergone primary filtration. Its function is to provide an installation base for the coarse filter screen 10, allowing the granules flowing out of the filter barrel to undergo secondary filtration on the coarse filter plate 9. At the same time, through its own reciprocating shaking, it enhances the screening effect of the coarse filter screen 10. It is the core installation carrier for secondary filtration.

[0056] Coarse filter screen 10: Its purpose is to filter out impurities larger than the particle size in plastic granules. Its function is to intercept larger impurities such as plastic lumps and metal impurities, and prevent them from entering the feed pipe 1 and the feeder body, so as to avoid clogging the equipment or affecting the quality of injection molded products, and complete the final impurity screening.

[0057] Drive ring 14: Its purpose is to connect the synchronizing rod 15 and the eccentric shaft 16. Its function is to receive the reciprocating power transmitted by the eccentric shaft 16, convert the circular motion of the eccentric shaft 16 into its own vertical reciprocating motion, and then transmit the power to the coarse filter plate 9 through the synchronizing rod 15. It is a key component for power conversion and transmission.

[0058] Synchronizing rod 15: Its purpose is to connect the driving ring 14 and the coarse filter plate 9. Its function is to synchronously transmit the vertical reciprocating motion of the driving ring 14 to the side of the coarse filter plate 9 away from the hinge end, so as to ensure that the coarse filter plate 9 can swing up and down with the movement of the driving ring 14. It is the direct transmission component that drives the coarse filter plate 9 to move.

[0059] Eccentric shaft 16: Its purpose is to be installed on the power shaft 7 and drive the drive ring 14 to move. Its function is to drive the drive ring 14 to reciprocate in the vertical direction when it rotates with the power shaft 7 due to its own eccentric design. It converts the circumferential rotation of the power shaft 7 into the linear reciprocating motion of the drive ring 14, which is the power source for the reciprocating swaying of the coarse filter plate 9.

[0060] The bearing at eccentric shaft 16 is installed between the power shaft 7 and the eccentric shaft 16. Its function is to reduce the friction between the eccentric shaft 16 and the power shaft 7 when the eccentric shaft 16 rotates, ensure that the eccentric shaft 16 rotates flexibly, avoid the eccentric shaft 16 from jamming or excessive wear due to excessive friction, ensure that the drive ring 14 can perform stable reciprocating motion, and thus ensure the shaking effect of the coarse filter plate 9.

[0061] As a preferred embodiment of the above, the feed end of the filter barrel is coaxially provided with a feeding pipe 17, the diameter of the feeding pipe 17 is the same as the diameter of the filter barrel, and a baffle 18 is provided on the inner side wall of the output side of the feeding pipe 17, and a plurality of sliding holes 19 are provided through the edge of the baffle 18.

[0062] A support plate 20 is installed on the side of the bracket 3 facing the filter barrel, and a collection box 21 for collecting filter debris from the filter barrel is placed on the top of the support plate 20.

[0063] The fixing ring 6 has several reinforcing ribs 22 evenly distributed on the annular sidewall facing the feeding tube 17, and the feeding tube 17 and the fine filter screen 5 are both connected to the reinforcing ribs 22.

[0064] An auxiliary support plate 23 is provided on the bottom end of the support plate 20 away from the bracket 3;

[0065] In this embodiment,

[0066] Feed pipe 17: Its purpose is to connect the external raw material supply equipment and the filter barrel. Its function is to guide the plastic particles to be filtered into the filter barrel, provide a stable channel for the particles to enter the filter barrel, and prevent the particles from splashing or scattering when entering the filter barrel.

[0067] Baffle 18: Its purpose is to be installed on the inner side wall of the output side of the feed pipe 17. Its function is to control the speed and flow rate of the granules entering the filter barrel, so as to avoid the instantaneous large amount of granules entering the filter barrel, which would lead to insufficient filtration of the fine filter screen 5 and granule accumulation and blockage. This ensures that the filtration process proceeds in an orderly manner. Moreover, the baffle 18 prevents the staff from directly feeding the granules into the tail end of the fine filter screen 5, or even directly feeding the granules through the fine filter screen 5 and letting them fall directly onto the coarse filter plate 9, thus improving the reliability of use.

[0068] Sliding hole 19: Its purpose is to provide a passage for the granules, so that the plastic granules can enter the filter barrel evenly and slowly from the feed pipe 17. It works with the baffle 18 to achieve flow control, ensuring that each part of the granules can fully contact the fine filter screen 5, thereby improving the initial filtration effect.

[0069] Support plate 20: Its purpose is to support the collection box 21. Its function is to provide a stable platform for the collection box 21, ensuring that the collection box 21 can be accurately positioned below the fine filter screen 5 to receive the filtered fine debris, while preventing the collection box 21 from directly contacting the ground or the bracket 3, which facilitates subsequent cleaning of debris.

[0070] Collection box 21: Its purpose is to collect the impurities filtered out by fine filter screen 5. Its function is to temporarily store impurities smaller than the particle size, such as debris and powder agglomerates, to prevent impurities from scattering and polluting the production environment. At the same time, it is convenient for staff to clean it regularly to ensure the continuous high efficiency of the filtration process.

[0071] Reinforcing rib 22: Its purpose is to connect the fixing ring 6, the feeding pipe 17 and the fine filter screen 5. Its function is to enhance the connection strength between the three, further strengthen the skeleton structure of the fine filter screen 5 composed of the driving rod 8 and the fixing ring 6, prevent the connection between the feeding pipe 17 and the fine filter screen 5 from loosening or deformation due to vibration and particle impact, and improve the overall structural stability of the filter barrel.

[0072] Auxiliary support plate 23: Its purpose is to provide auxiliary support for support plate 20. Its function is to enhance the load-bearing capacity of support plate 20, prevent support plate 20 from bending and deforming due to excessive force after placing collection box 21 and debris, and ensure that support plate 20 always remains horizontal and stable, providing reliable support for collection box 21.

[0073] The technical problem solved by this utility model is to filter and remove impurities from granules. In actual use, if the cleanliness of the granules is poor, a dust collection mechanism can be installed near the fine filter screen 5 and the coarse filter plate 9 during the filtration and impurity removal stage. The dust collection mechanism can perform preliminary dust removal. In conjunction with the filtration and impurity removal structure of this utility model, a better filtration effect of the feeder can be achieved. The dust collection mechanism can be flexibly selected according to the actual cleanliness of the granules and the requirements.

[0074] The working principle of this utility model is as follows:

[0075] First, start the motor 11. The output of the motor 11 drives the power gear 12 to rotate. The power gear 12 drives the power shaft 7 to rotate by meshing with the driven gear 13. When the power shaft 7 rotates, it drives the fine filter screen 5 skeleton structure, which is composed of the driving rod 8 and the fixed ring 6, to rotate synchronously. The skeleton structure ensures the stability of the fine filter screen 5 and pushes the plastic particles entering the filter barrel from the feeding pipe 17 to move evenly inside the fine filter screen 5. The fine filter screen 5 filters out impurities smaller than the particle size, and the impurities fall into the collection box 21 below. The particles flow out from the outlet of the fine filter screen 5 and are transferred to the coarse filter plate 9 by the guide plate 24. On the other hand, the eccentric shaft 16 on the power shaft 7 rotates with the power shaft 7, driving the driving ring 14 to reciprocate vertically. The driving ring 14 drives the coarse filter plate 9 to swing up and down away from the hinge end through the synchronous rod 15. The coarse filter screen 10 at the bottom of the coarse filter plate 9 filters out impurities larger than the particle size. The filtered qualified particles fall into the feed hopper 2, and then enter the feeder body through the feed pipe 1. Finally, the feeder body transports the particles to the injection molding machine, completing the entire raw material feeding process with filtration function.

[0076] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A feeding machine with a high-efficiency filtration structure, comprising a feeding machine body, wherein an inlet pipe (1) is connected to the input end of the feeding machine body, an inlet hopper (2) for feeding material is connected to the input end of the inlet pipe (1), and a support (3) is provided for the inlet hopper (2) to provide stable support thereto, characterized in that, It also includes, A portal frame (4) has two vertical plates symmetrically installed on one side of the top of the feed hopper (2); The filter barrel has a circumferential sidewall set as a fine filter screen (5) for filtering impurities smaller than the particle size. The fine filter screen (5) is inclined downward from the feed port to the discharge port. A fixing ring (6) is fixedly fitted on the outer sidewall of the discharge port of the fine filter screen (5). A power shaft (7) is coaxially arranged inside the fine filter screen (5). Several driving rods (8) are evenly distributed on the circumferential sidewall of the power shaft (7). The outer ends of the driving rods (8) all pass through the filter screen and connect to the inner sidewall of the fixing ring (6). A through hole is provided through the sidewall of the top of the portal frame (4) facing the fine filter screen (5). The power shaft (7) is installed in the through hole through the bearing. The power shaft (7) extends through the through hole to the other side of the portal frame (4). A power mechanism for driving the power shaft (7) to rotate is provided on the portal frame (4). Coarse filter plate (9) is installed on the upper side inside the feed hopper (2). A coarse filter screen (10) is provided at the bottom of the coarse filter plate (9) to filter out impurities larger than the particle size of the material. A guide plate (24) is provided between the gantry frames (4) to transfer the granules in the filter barrel to the coarse filter plate (9).

2. The feeding machine with a high-efficiency filtration structure as described in claim 1, characterized in that, The power mechanism includes a motor (11), which is mounted on the top of the gantry frame (4). A power gear (12) is coaxially arranged at the output end of the motor (11). A driven gear (13) that meshes with the power gear (12) is fixedly mounted on the power shaft (7). The diameter of the power gear (12) is smaller than the diameter of the driven gear (13).

3. The feeder with a high-efficiency filtration structure as described in claim 1, characterized in that, The two ends of the coarse filter plate (9) away from the gantry frame (4) are hinged to the two vertical side walls opposite to the feed hopper (2), and the top of the other side of the coarse filter plate (9) is provided with a vertical reciprocating movement mechanism.

4. The feeder with a high-efficiency filtration structure as described in claim 3, characterized in that, The vertical reciprocating movement mechanism includes a drive ring (14). Two synchronous rods (15) are symmetrically arranged at the bottom of the outer circumference of the drive ring (14). The bottom ends of the two synchronous rods (15) are respectively connected to the top of the side of the coarse filter plate (9) away from the hinge. An eccentric shaft (16) is provided on the side wall of the drive ring (14) of the power shaft (7). The eccentric shaft (16) passes through the drive ring (14) and slides in contact with the drive ring (14). The eccentric shaft (16) is mounted on the power shaft (7) by bearings.

5. The feeder with a high-efficiency filtration structure as described in claim 1, characterized in that, The feed end of the filter barrel is coaxially provided with a feeding pipe (17), the diameter of the feeding pipe (17) is the same as the diameter of the filter barrel, and a baffle (18) is provided on the inner side wall of the output side of the feeding pipe (17), and several sliding holes (19) are provided through the edge of the baffle (18).

6. The feeder with a high-efficiency filtration structure as described in claim 1, characterized in that, The bracket (3) has a support plate (20) installed on the side facing the filter bucket, and a collection box (21) for collecting filter debris from the filter bucket is placed on the top of the support plate (20).

7. The feeder with a high-efficiency filtration structure as described in claim 5, characterized in that, The fixed ring (6) has several reinforcing ribs (22) evenly distributed on the annular sidewall facing the feeding pipe (17). The feeding pipe (17) and the fine filter screen (5) are both connected to the reinforcing ribs (22).

8. The feeder with a high-efficiency filtration structure as described in claim 6, characterized in that, An auxiliary support plate (23) is provided on the side of the bottom of the support plate (20) away from the bracket (3).

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