An automated screening and grading apparatus for plastic pellets

Abstract

The utility model provides a kind of automatic screening grading equipment of plastic granules, it is related to plastic granule screening technical field, including screening equipment main part, the outer surface of one side of screening equipment main part is provided with grading screening subassembly, the grading screening subassembly includes motor, the output end of motor is connected with connecting rod, the surface equidistance of connecting rod is connected with three groups first gear wheel.The utility model in when need to carry out grading screening to plastic granule, first pour it into the screening net in uppermost end, then start motor, so that the output end of motor can be driven three groups threaded rods to rotate by gear engagement mode, at this moment, three groups screening net can be driven back and forth by screw rotation mode, the grading screening of plastic granule is completed by the filter hole of different size of three groups screening net, finally, the broken material is collected by broken material box, avoid the problem that the existing screening mode is prone to cause grading precision to drop.

Description

Technical Field

[0001] This utility model relates to the field of plastic granule screening technology, and in particular to an automated screening and grading device for plastic granules. Background Technology

[0002] Plastic granules are semi-finished plastic products that exist in granular form. They are raw materials for molding processes such as extrusion, injection molding, blow molding, and foaming, and have a wide range of applications and classification systems.

[0003] As described in announcement number CN222115705U, a plastic granule screening device includes a screening box, two screening screens, a vibration mechanism, and two collection mechanisms. Both screening screens are inclinedly arranged within the screening box. Fixed plates are connected to both sides of each screening screen. A slot is provided on one side of each fixed plate, and a insertion mechanism is provided on the other side of the slot. The insertion mechanism includes a mounting plate, a groove, a first spring, an insert plate, and a first pull rod. The mounting plate is located on one side of the slot, the groove on one side of the mounting plate, and the first spring is connected to the inner wall of the groove. Therefore, by incorporating the vibration mechanism, the screening screens can be vibrated without direct connection to them. The insertion mechanism and limiting mechanism facilitate the disassembly of the screening screens, thereby simplifying maintenance and improving screening efficiency.

[0004] Although the patent simplifies the maintenance process of the screening screen through the insertion mechanism and the limiting mechanism, the existing inclined vibration screening method has a core problem: plastic particles may slip into the collection box prematurely due to the tilt angle of the screen and the effect of continuous vibration before the particle size classification is fully completed, resulting in a decrease in classification accuracy. Utility Model Content

[0005] The purpose of this invention is to solve the core problem of the existing inclined vibrating screening method, which is that plastic particles may slip into the collection box prematurely due to the tilt angle of the screen and the effect of continuous vibration before the particle size classification is fully completed, resulting in a decrease in classification accuracy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automated screening and grading device for plastic granules, comprising a screening device body, a grading and screening component disposed on one outer surface of the screening device body, the grading and screening component including a motor, a connecting rod connected to the output end of the motor, three sets of first gears equidistantly connected to the surface of the connecting rod, three sets of movable frames disposed inside the screening device body, positioning sliders connected to the front and rear ends of each set of movable frames, a block connected to one side of each set of movable frames, a screening screen disposed inside the movable frame, a threaded hole opened inside the block, a threaded rod disposed inside the threaded hole, a second gear connected to one side of the threaded rod, a bearing sleeve connected to the surface of the threaded rod near the second gear, a feeding rack connected to the bottom of each set of movable frames, and a waste box connected to the bottom of the screening device body.

[0007] Furthermore, the main body of the screening device is provided with positioning grooves at the positions that match each set of positioning sliders, and the threaded rod is connected to the block through a threaded hole.

[0008] Furthermore, the position and size of the first gear match the position and size of the second gear, and the first gear and the second gear form a meshing connection.

[0009] Furthermore, the motor is electrically connected to an external power source via a control switch.

[0010] Furthermore, a disassembly and unloading assembly is connected to the other side surface of the main body of the screening device. The disassembly and unloading assembly includes a slide rail, and a limit plate is provided inside the slide rail.

[0011] Furthermore, magnetic sliders are connected to the front and rear surfaces of the limiting plate, and magnetic grooves are provided on the inner walls of the front and rear ends of the movable frame.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, when it is necessary to classify and screen plastic granules, they are first poured into the top screening screen. Then, the motor is turned on, so that the output end of the motor can drive three sets of threaded rods to rotate simultaneously through gear meshing. At this time, the three sets of screening screens can be moved back and forth by the rotation of the threads. The plastic granules are classified and screened through the filter holes of different sizes of the three sets of screening screens. The final fragments are collected through the fragment box, avoiding the problem that the existing screening method is prone to causing a decrease in classification accuracy.

[0014] 2. In this utility model, after the screening and grading of the material is completed, the limiting plate can be pulled out, and then the screening screen can be pulled outward so that its magnetic slider can be pulled out from the magnetic groove to complete the disassembly. After that, the particles screened out in each screening screen can be poured out and collected, which improves the convenience of disassembly and assembly. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of an automated screening and grading device for plastic granules is provided for this utility model.

[0016] Figure 2 This utility model presents a three-dimensional structural diagram of an automated screening and grading device for plastic granules from another angle.

[0017] Figure 3 A cross-sectional structural diagram of an automated screening and grading device for plastic granules is provided for this utility model.

[0018] Figure 4 This invention provides a first partially exploded structural diagram of an automated screening and grading device for plastic granules.

[0019] Figure 5 This is a second partially exploded structural diagram of an automated screening and grading device for plastic granules proposed in this utility model.

[0020] Legend: 1. Main body of screening equipment; 2. Grading and screening component; 201. Motor; 202. Connecting rod; 203. First gear; 204. Moving frame; 205. Positioning slider; 206. Block; 207. Screening mesh; 208. Threaded hole; 209. Threaded rod; 210. Second gear; 211. Bearing sleeve; 212. Discharge rack; 213. Crushed material box; 3. Disassembly and assembly of discharging and unloading component; 301. Slide rail; 302. Limiting plate; 303. Magnetic suction slide; 304. Magnetic suction slider. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1, such as Figure 1 - Figure 4As shown, this utility model provides a CNC tooling fixture for producing plastic shells, including a screening equipment body 1. A grading and screening component 2 is provided on one outer surface of the screening equipment body 1. The grading and screening component 2 includes a motor 201, with a connecting rod 202 connected to the output end of the motor 201. Three sets of first gears 203 are equidistantly connected to the surface of the connecting rod 202. Three sets of movable frames 204 are provided inside the screening equipment body 1. Positioning sliders 205 are connected to the front and rear ends of each set of movable frames 204. A block 206 is connected to one side of each set of movable frames 204. A screening screen 207 is provided inside the movable frame 204. A threaded hole 208 is opened inside the block 206, and a threaded rod 209 is provided inside the threaded hole 208. A second gear 210 is connected to one side of the threaded rod 209. A bearing sleeve 211 is connected to the surface of the threaded rod 209 near the second gear 210. A feeding rack 212 is connected to the bottom of each set of moving frames 204. A crushed material box 213 is connected to the bottom of the screening equipment body 1. A positioning groove is opened at the position where the screening equipment body 1 matches each set of positioning sliders 205. The threaded rod 209 is threadedly connected to the block 206 through the threaded hole 208. The position and size of the first gear 203 match the position and size of the second gear 210. The first gear 203 and the second gear 210 are meshed. The motor 201 is electrically connected to an external power source through a control switch.

[0024] The effect achieved by the entire embodiment 1 is that, when screening plastic granules, they can first be poured into the uppermost screening screen 207, and then the motor 201 is turned on, so that the output end of the motor 201 can drive the connecting rod 202 to rotate forward. When the connecting rod 202 rotates forward, it will also drive the three sets of first gears 203 to mesh and rotate with the second gears 210 simultaneously. In turn, the three sets of threaded rods 209 will rotate forward simultaneously through the gear meshing. When the threaded rods 209 rotate forward, they will also rotate in the opposite direction through the threaded hole 208 and the block 206. At this time, the three sets of threaded rods can be driven to rotate forward through the rotation of the threads. The screening screen 207 moves toward the second gear 210. At the same time, the positioning slider 205 of the moving frame 204 also slides in the positioning groove to improve stability during back-and-forth movement. Then, the motor 201 will start the direction rotation function, thereby driving the three sets of threaded rods 209 to reverse through the reverse function. This will drive the moving frame 204 to move in the opposite direction. Through the back-and-forth movement, the different sizes of filter holes of the three sets of screening screens 207 can complete the grading and screening of plastic granules. The final fragments will be collected through the fragment box 213. This avoids the problem that the existing screening method is prone to causing a decrease in grading accuracy.

[0025] Example 2, as Figure 1 and Figure 5As shown, the other side surface of the main body 1 of the screening equipment is connected to the disassembly and unloading assembly 3. The disassembly and unloading assembly 3 includes a slide rail 301. The slide rail 301 is provided with a limit plate 302. The front and rear end surfaces of the limit plate 302 are connected to magnetic sliders 304. The front and rear end inner walls of the movable frame 204 are provided with magnetic grooves 303.

[0026] The effect achieved by the entire embodiment 2 is that the limiting plate 302 can limit the three sets of screening nets 207, preventing the screening nets 207 from accidentally sliding out. The screening nets 207 are fixed inside the movable frame 204 by magnetic slider 304 and magnetic groove 303, which facilitates disassembly and improves the convenience of disassembly and assembly.

[0027] Working principle: When it is necessary to classify and screen plastic granules, first pour them into the top screening screen 207, then turn on the motor 201, so that the output end of the motor 201 can drive the three sets of threaded rods 209 to rotate simultaneously through gear meshing. At this time, the rotation of the threads can drive the three sets of screening screens 207 to move back and forth. The plastic granules are classified and screened through the filter holes of the three sets of screening screens 207 of different sizes. The final fragments are collected through the fragment box 213, avoiding the problem of reduced classification accuracy caused by existing screening methods. After the screening and classification are completed, the limiting plate 302 can be pulled out, and then the screening screen 207 can be pulled outward so that its magnetic slider 304 can be pulled out from the magnetic sliding groove 303 to complete the disassembly. Then, the granules screened in each screening screen 207 can be poured out and collected, which improves the convenience of disassembly and assembly.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. An automated screening and grading device for plastic granules, comprising a screening device body (1), characterized in that: A grading and screening component (2) is provided on one outer surface of the main body (1) of the screening device. The grading and screening component (2) includes a motor (201), the output end of which is connected to a connecting rod (202). Three sets of first gears (203) are equidistantly connected to the surface of the connecting rod (202). The main body (1) of the screening equipment has three sets of movable frames (204) inside. Each set of movable frames (204) has a positioning slider (205) connected to its front and rear ends. Each set of movable frames (204) has a block (206) connected to one side. The interior of each movable frame (204) is equipped with... A screening screen (207) is provided. A threaded hole (208) is opened inside the block (206). A threaded rod (209) is provided inside the threaded hole (208). A second gear (210) is connected to one side of the threaded rod (209). A bearing sleeve (211) is connected to the surface of the threaded rod (209) near the second gear (210). A feeding rack (212) is connected to the bottom of each set of moving frames (204). A crushed material box (213) is connected to the bottom of the screening equipment body (1).

2. The automated screening and grading equipment for plastic granules according to claim 1, characterized in that: The main body (1) of the screening device is provided with a positioning groove at the position that matches each group of positioning sliders (205), and the threaded rod (209) is connected to the block (206) through the threaded hole (208).

3. The automated screening and grading equipment for plastic granules according to claim 2, characterized in that: The position and size of the first gear (203) match the position and size of the second gear (210), and the first gear (203) and the second gear (210) form a meshing connection.

4. The automated screening and grading equipment for plastic granules according to claim 3, characterized in that: The motor (201) is electrically connected to an external power source via a control switch.

5. The automated screening and grading equipment for plastic granules according to claim 1, characterized in that: The other side surface of the main body (1) of the screening equipment is connected to a disassembly and unloading assembly (3), which includes a slide rail (301) and a limit plate (302) is provided inside the slide rail (301).

6. The automated screening and grading equipment for plastic granules according to claim 5, characterized in that: The front and rear surfaces of the limiting plate (302) are connected to magnetic sliders (304), and the front and rear inner walls of the movable frame (204) are provided with magnetic grooves (303).

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