A screening device for plastic particle manufacturing

Abstract

The utility model relates to the field of plastic particle production, especially a kind of screening device for plastic particle manufacturing, including collection frame, and the plugboard is inserted in collection frame front side, further include screening mechanism and poking mechanism, screening mechanism is located on the upside of collection frame, and poking mechanism is located inside screening mechanism. Swing frame is driven reciprocatingly by the cooperation of driving assembly and two reset springs, then the screening frame is allowed to carry out pendulum action by the meshing of first arc gear and second arc gear, in this process, plastic particles are screened by screening mesh, at the same time, arc plate is used to dredge screening mesh, to avoid the situation that plastic particles block screening mesh, and when screening frame swings, poking plate can stir plastic particles to speed up the whole screening process.

Description

Technical Field

[0001] This utility model relates to the field of plastic pellet production, and in particular to a screening device for manufacturing plastic pellets. Background Technology

[0002] Plastic granules are made from large pieces of plastic through melting, extrusion, and granulation processes. Plastic granules are the raw material for manufacturing plastic products. During the manufacturing process, screening devices are used to select qualified products to ensure the quality of plastic granule production. According to the patent document with publication number CN222844499U, by tightening the inner and outer loosening screw sleeves of the connecting screw, the corresponding screen holes of the inner and outer screen cylinders are staggered to change the size of the screened plastic particles. Then, the geared motor drives the outer and inner screen cylinders to rotate through the drive shaft to screen the qualified plastic particles. While the patent document describes a method for adjusting the size of plastic particles during screening by staggering the corresponding sieve holes on the inner and outer sieve cylinders, the staggered sieve holes result in irregular screening patterns. This can cause cylindrical plastic particles to get stuck in the adjusted sieve holes, leading to a decrease in screening speed. Additionally, the inner and outer tensioning sleeves of the connecting screw are prone to loosening during screening, resulting in uneven size of the screened plastic particles. Utility Model Content

[0003] The purpose of this invention is to provide a screening device for manufacturing plastic granules in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions: A screening device for manufacturing plastic pellets includes a collection rack with an insert plate inserted into the front side of the collection rack, and also includes a screening mechanism and a toggle mechanism. The screening mechanism is located on the upper side of the collection rack, and the toggle mechanism is located inside the screening mechanism. The screening mechanism includes a screening frame, a swing frame below the screening frame, a screening mesh plate inserted into the bottom of the screening frame, an arc plate inserted into the top of the swing frame, a first arc rack fixed to one end of the screening frame, a second arc rack meshing with the first arc rack fixed to one end of the swing frame, the swing frame rotatably connected inside the collection frame, the screening frame rotatably connected to the upper end of the collection frame, return springs fixed on both sides of the screening frame, the lower ends of the two return springs fixedly connected to the collection frame, and a drive assembly provided at the input end of the swing frame. The actuating mechanism includes an actuating shaft that passes through the screening frame. Both ends of the actuating shaft that extend out of the screening frame are fixed with concave seats, and an actuating plate is fixed in the middle of the actuating shaft.

[0005] Preferably, the top of the arc-shaped plate is fixed with multiple posts, and the screening screen plate has arc-shaped screen holes corresponding to the multiple posts.

[0006] Preferably, the lower end of the actuating plate is attached to the screening screen, and two concave seats are fixed on both sides of the collection rack.

[0007] Preferably, the screening rack has support rings on both sides, and the support rings are located inside the concave seat. The upper end of the collection rack is rotatably connected to the two support rings, and the two ends of the actuating shaft are rotatably connected to the center position of the two support rings.

[0008] Preferably, the drive assembly includes an arc gear, which is fixedly connected to the rotating shaft of the swing frame extending from the collection frame. A drive motor is provided on the rear side of the arc gear, and a crescent-shaped toothed gear that meshes with the arc gear is fixed at the output end of the drive motor.

[0009] Preferably, the side of the collection rack away from the drive motor has a screen replacement port for removing and inserting the screening screen and the arc plate.

[0010] Preferably, the front side of the collection rack is provided with a discharge pipe, and the discharge pipe has an opening for inserting the plate.

[0011] The advantages compared to existing technologies are as follows: The swing frame is driven to rotate back and forth by the drive assembly and two return springs. Then, the first and second arc-shaped racks mesh to make the screening frame swing. During this process, plastic particles are screened by the screening screen, and the arc-shaped plate clears the screen to prevent plastic particles from clogging it. When the screening frame swings, the agitator can move the plastic particles to speed up the entire screening process. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a perspective view of a screening device for manufacturing plastic granules according to the present invention; Figure 2 This is a front view of a screening device for manufacturing plastic granules according to the present invention; Figure 3 This is a side view of a screening device for manufacturing plastic granules according to the present invention; Figure 4 yes Figure 2Sectional view at point AA; Figure 5 yes Figure 3 Sectional view at point BB; Figure 6 This is a schematic diagram of the drive component structure of a screening device for manufacturing plastic granules according to the present invention; Figure 7 This is a schematic diagram of the screening screen and swing frame structure of a screening device for manufacturing plastic granules according to the present invention; Figure 8 This is a schematic diagram of the first and second arc-shaped racks of the screening device for manufacturing plastic granules according to the present invention; Figure 9 This is a schematic diagram of the swing frame and the second arc-shaped rack structure of a screening device for manufacturing plastic granules according to the present invention.

[0014] The annotations in the attached figures are explained as follows: 1. Screening mechanism; 2. Collection rack; 3. Actuating mechanism; 4. Insert plate; 11. Screening rack; 111. First arc-shaped rack; 12. Screening mesh plate; 13. Arc plate; 14. Swinging frame; 141. Second arc-shaped rack; 15. Arc gear; 16. Crescent tooth gear; 17. Return spring; 18. Drive motor; 31. Actuating shaft; 32. Actuating plate; 33. Concave seat. Detailed Implementation

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-9 As shown, a screening device for manufacturing plastic granules includes a collection rack 2, with an insert plate 4 inserted into the front side of the collection rack 2, and also includes a screening mechanism 1 and a toggle mechanism 3. The screening mechanism 1 is located on the upper side of the collection rack 2, and the toggle mechanism 3 is located inside the screening mechanism 1.

[0017] In this embodiment: the screening mechanism 1 includes a screening frame 11, a swing frame 14 below the screening frame 11, a screening mesh plate 12 inserted into the bottom of the screening frame 11, an arc-shaped plate 13 inserted into the top of the swing frame 14, a plurality of posts fixed to the top of the arc-shaped plate 13, and arc-shaped sieve holes corresponding to the plurality of posts on the screening mesh plate 12. A first arc-shaped rack 111 is fixed to one end of the screening frame 11, and a second arc-shaped rack 141 meshing with the first arc-shaped rack 111 is fixed to one end of the swing frame 14. The swing frame 14 is rotatably connected inside the collection frame 2. The screen 11 is rotatably connected to the upper end of the collection rack 2. Both sides of the screen 11 are fixed with return springs 17. The lower ends of the two return springs 17 are fixedly connected to the collection rack 2. The input end of the swing frame 14 is equipped with a drive assembly. The screen plate 12 at the bottom of the screen 11 is used to screen plastic particles. At the same time, when the screen 11 of the swing frame 14 swings, the pin on the arc plate 13 will be inserted into the arc-shaped screen hole of the screen plate 12. Then, the plastic particles stuck in the arc-shaped screen hole can be pushed into the inside of the screen 11, so as to avoid a large number of plastic particles clogging the screen plate 12.

[0018] In this embodiment: the actuating mechanism 3 includes an actuating shaft 31, which passes through the screening frame 11. Both ends of the actuating shaft 31 extending out of the screening frame 11 are fixed with concave seats 33. An actuating plate 32 is fixed in the middle of the actuating shaft 31. The lower end of the actuating plate 32 is in contact with the screening mesh plate 12. The two concave seats 33 are respectively fixed on both sides of the collection frame 2. Both sides of the screening frame 11 are provided with support rings, and the support rings are located inside the concave seats 33. The upper end of the collection frame 2 is rotatably connected to the two support rings. The two ends of the actuating shaft 31 are rotatably connected to the center of the two support rings. The two ends of the actuating shaft 31 are fixed by the two concave seats 33. At this time, when the screening frame 11 swings, the actuating shaft 31 does not rotate with the screening frame 11. Instead, the actuating plate 32 will actuate the plastic particles at the bottom of the screening frame 11 when the screening frame 11 swings, so as to prevent the plastic particles from accumulating in the same position of the screening mesh plate 12.

[0019] In this embodiment: the drive assembly includes an arc gear 15, which is fixedly connected to the rotating shaft of the swing frame 14 extending from the collection frame 2. A drive motor 18 is provided on the rear side of the arc gear 15. A crescent-shaped gear 16 that meshes with the arc gear 15 is fixed to the output end of the drive motor 18. The rotating part of the drive motor 18 drives the crescent-shaped gear 16 to rotate, which in turn drives the arc gear 15 to mesh. The arc gear 15 drives the swing frame 14 to rotate. At the same time, the second arc-shaped rack 141 on the swing frame 14 meshes with the first arc-shaped rack 111, from... This causes the screening frame 11 to flip as well. At the same time, the return springs 17 on both sides of the screening frame 11 bend. As the crescent gear 16 rotates, when the swing frame 14 rotates to a certain angle, the arc gear 15 no longer meshes with the crescent gear 16. At this time, the two return springs 17 drive the screening frame 11 to start resetting in the opposite direction. Then, the first arc rack 111 meshes with the second arc rack 141 to make the swing frame 14 reset synchronously. Then the arc gear 15 resets to the initial state. When the crescent gear 16 rotates to mesh with the arc gear 15 again, the screening frame 11 starts the next round of pendulum motion.

[0020] In this embodiment: the collecting rack 2 has a screen changing port on the side away from the drive motor 18 for pulling out and inserting the screening screen 12 and the arc plate 13. The front side of the collecting rack 2 is provided with a discharge pipe, and the discharge pipe has a socket for inserting the insert plate 4. By pulling out or inserting the insert plate 4, the screened plastic particles in the collecting rack 2 can be discharged from the discharge pipe. At the same time, the screen changing port of the collecting rack 2 can be used to facilitate the simultaneous replacement of the screening screen 12 and the arc plate 13, thereby quickly screening particles of different sizes.

[0021] Working principle: In use, firstly, the corresponding screening screen 12 is inserted into the bottom of the screening frame 11 according to the size of the plastic particles to be screened. At the same time, the arc plate 13 is also inserted into the upper side of the swing frame 14 along with the screening screen 12. Then, the plastic particles to be screened are poured into the screening frame 11, and then the insert plate 4 is inserted into the insertion hole of the discharge pipe to block it. Then, the rotating part of the drive motor 18 drives the crescent gear 16 to rotate, and the rotation of the crescent gear 16 drives the arc gear 15 to mesh. The swing frame 14 is rotated by the arc gear 15, and the second arc rack 141 on the swing frame 14 meshes with the first arc rack 111, thereby rotating the screening frame 11 as well. During this process, the return springs 17 on both sides of the screening frame 11 bend. As the crescent gear 16 rotates, when the swing frame 14 rotates to a certain angle, the arc gear 15 no longer meshes with the crescent gear 16, and the two return springs 17 drive the screening frame 11 to begin reversing and resetting. Then, the first arc rack 111 and the first arc rack 111 rotate... The engagement of the second arc-shaped rack 141 causes the swing frame 14 to rotate and reset synchronously. At this time, the arc-shaped gear 15 follows the swing frame 14 back to its initial state. When the drive motor 18 drives the crescent-shaped gear 16 to rotate and re-engage with the arc-shaped gear 15, the screening frame 11 immediately begins the next round of pendulum motion. When the screening frame 11 performs the pendulum motion, the plastic particles inside it will also swing back and forth. At the same time, the screening mesh plate 12 at the bottom of the screening frame 11 screens the plastic particles. When the screening frame 11 swings, the arc plate 13... The insert will be inserted into the arc-shaped screen hole of the screening screen plate 12, and then the plastic particles stuck in the arc-shaped screen hole will be pushed into the inside of the screening frame 11, so as to avoid a large number of plastic particles clogging the screening screen plate 12. At the same time, since the two concave seats 33 fix the two ends of the actuating shaft 31, the actuating shaft 31 does not rotate with the screening frame 11 when the pendulum moves. Instead, the actuating plate 32 will move the plastic particles at the bottom of the screening frame 11 when the pendulum moves, so as to prevent the plastic particles from accumulating in the same position of the screening screen plate 12.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A screening device for manufacturing plastic granules, comprising a collection rack (2), wherein a plate (4) is inserted into the front side of the collection rack (2), characterized in that: It also includes a screening mechanism (1) and a toggle mechanism (3), wherein the screening mechanism (1) is located on the upper side of the collection rack (2) and the toggle mechanism (3) is located inside the screening mechanism (1); The screening mechanism (1) includes a screening frame (11), a swing frame (14) is provided below the screening frame (11), a screening mesh plate (12) is inserted into the bottom of the screening frame (11), an arc plate (13) is inserted into the top of the swing frame (14), a first arc rack (111) is fixed at one end of the screening frame (11), a second arc rack (141) is fixed at one end of the swing frame (14) and meshes with the first arc rack (111), the swing frame (14) is rotatably connected inside the collection frame (2), the screening frame (11) is rotatably connected to the upper end of the collection frame (2), a return spring (17) is fixed on both sides of the screening frame (11), the lower ends of the two return springs (17) are fixedly connected to the collection frame (2), and a drive assembly is provided at the input end of the swing frame (14). The actuating mechanism (3) includes an actuating shaft (31), which passes through the screening frame (11). Both ends of the actuating shaft (31) extending out of the screening frame (11) are fixed with concave seats (33), and an actuating plate (32) is fixed in the middle of the actuating shaft (31).

2. The screening device for manufacturing plastic granules according to claim 1, characterized in that: The top of the arc plate (13) is fixed with multiple inserts, and the screening mesh plate (12) is provided with arc-shaped screen holes corresponding to the multiple inserts.

3. The screening device for manufacturing plastic granules according to claim 1, characterized in that: The lower end of the actuating plate (32) is attached to the screening screen (12), and the two concave seats (33) are fixed on both sides of the collection rack (2).

4. The screening device for manufacturing plastic granules according to claim 1, characterized in that: The screening rack (11) is provided with support rings on both sides, and the support rings are located inside the concave seat (33). The upper end of the collection rack (2) is rotatably connected to the two support rings, and the two ends of the actuating shaft (31) are rotatably connected to the center position of the two support rings.

5. A screening device for manufacturing plastic granules according to claim 1, characterized in that: The drive assembly includes an arc gear (15), which is fixedly connected to the pivot of the swing frame (14) extending out of the collection frame (2). A drive motor (18) is provided on the rear side of the arc gear (15), and a crescent toothed gear (16) that meshes with the arc gear (15) is fixed at the output end of the drive motor (18).

6. The screening device for manufacturing plastic granules according to claim 5, characterized in that: The collection rack (2) has a screen replacement port on the side away from the drive motor (18) for pulling out and inserting the screening screen (12) and the arc plate (13).

7. The screening device for manufacturing plastic granules according to claim 1, characterized in that: The collection rack (2) has a discharge pipe on its front side, and the discharge pipe has an opening for inserting the insert plate (4).

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