A waste material collection device for plastic extruders

Abstract

This utility model belongs to the field of plastic waste collection technology, and particularly relates to a waste collection device for plastic extruders. It includes a crushing box with a crushing roller assembly rotatably mounted on it. A crushing inlet is located on the upper side of the crushing box. A feeding box is fixedly mounted on the upper side of the crushing box, with a discharge outlet on one side and a feed inlet on the upper side. Sliding openings are located on both sides of the feeding box, and sliders are slidably installed in both sliding openings. This waste collection device for plastic extruders is further enhanced by a drive wheel rotating, which in turn drives a transmission wheel via a transmission belt. The transmission wheel drives a transmission rod, which in turn drives a striking cam. The striking cam strikes the lower side of a guide plate, and under the action of the sliders on both sides and the vibration spring, the guide plate vibrates, assisting in the conveying of plastic waste and preventing blockages that could affect crushing.

Description

Technical Field

[0001] This utility model belongs to the field of plastic waste collection technology, and in particular relates to a waste collection device for plastic extruders. Background Technology

[0002] In the field of plastic extrusion production, the efficient recycling and treatment of waste materials is a key link to improve raw material utilization and reduce production costs. For this purpose, it is necessary to use a special collection device to collect and pre-treat waste materials.

[0003] Chinese patent CN223354882U discloses a waste material collection device for plastic extruders. This patent solves the problem to some extent that traditional devices only collect but do not crush, and subsequent processing is time-consuming.

[0004] The aforementioned patent has the following problems: This patent has some drawbacks in its use. Specifically, the feed inlet of the device is close to the extrusion outlet of the plastic extruder, but the discharged residue is in an incompletely solidified state, being soft or semi-molten with low hardness and high viscosity. When passing through the guide plate and crushing roller, the residue easily adheres to the guide plate or wraps around the blades, causing a "material blockage" problem and preventing complete crushing. Therefore, we propose a residue collection device for plastic extruders. Utility Model Content

[0005] The purpose of this invention is to provide a waste material collection device for plastic extruders to solve the problems mentioned in the background art.

[0006] In view of this, the present invention provides a waste material collection device for a plastic extruder, including a crushing box, on which a crushing roller assembly is rotatably mounted, and a crushing opening is provided on the upper side of the crushing box; A feeding box is fixedly installed on the upper side of the crushing box. A discharge port is opened on one side of the feeding box, and a feed port is opened on the upper side of the feeding box. Sliding ports are opened on both sides of the feeding box. A slider is slidably installed in each of the two sliding ports. A guide plate is fixedly installed on the opposite surface of the two sliders. Vibration springs are fixedly installed on the upper and lower sides of the two sliders. The other end of the vibration spring is fixedly installed on the inner wall of the sliding port. A transmission rod is rotatably installed on the inner wall of the feeding box. A striking cam is fixedly installed on the surface of the transmission rod.

[0007] In this technical solution, the pulverizing roller assembly rotatably installed inside the pulverizing chamber consists of two pulverizing rollers. Both ends of the two pulverizing rollers extend out of the pulverizing chamber, and gears are fixedly installed on the same side of both pulverizing rollers. The two gears mesh with each other, causing the two pulverizing rollers to drive in opposite directions simultaneously to pulverize the plastic residue. A pulverizing port is opened on the upper side of the pulverizing chamber, communicating with the upper component. A feeding box is fixedly installed on the upper side of the pulverizing chamber, with a discharge port on one side connecting to the pulverizing port and a feed port on the upper side to receive the residue discharged from the extruder. A guide plate is installed at an angle to receive and guide the residue to slide towards the discharge port. Vibration springs are fixedly installed on both the upper and lower sides of each slider, with the other end of the vibration spring fixedly installed on the inner wall of the sliding port. The high-temperature softened plastic residue falls from the feed port into the feeding box and onto the inclined guide plate. The transmission rod drives the striking cam to rotate continuously. When the cam's protruding part rotates and strikes the lower side of the guide plate, it pushes the guide plate and slider to overcome the elastic force of the vibration spring and cause a short displacement. After the cam's raised portion rotates, the spring force of the vibration spring causes the guide plate to rebound quickly. This process generates high-frequency, low-amplitude mechanical vibration, which is transmitted to the plastic residue on the guide plate. This mechanical vibration effectively breaks the adhesion between the plastic residue and the guide plate surface, preventing the semi-molten residue from sticking to the plate or accumulating at the discharge port. At the same time, the vibration also allows the plastic residue to come into rapid contact with air, causing it to harden quickly and preventing it from adhering to the crushing roller assembly during crushing.

[0008] In the above technical solution, further, a drive wheel is fixedly installed on one side of the crushing roller assembly, one end of the transmission rod extends to the outside of the feeding box and is fixedly installed with a transmission wheel, and the same drive belt is installed on the surface of the drive wheel and the transmission wheel.

[0009] In this technical solution, a drive wheel is fixedly installed on one side of the crushing roller assembly where plastic waste is collected. One end of the transmission rod, where plastic waste is collected, extends to the outside of the feeding box and is fixedly mounted with a transmission wheel. The same drive belt is fitted onto the surfaces of the drive wheel and the transmission wheel. When the crushing roller assembly is driven to rotate, it drives the drive wheel to rotate synchronously. The drive wheel transmits power to the transmission wheel via the drive belt, thereby driving the transmission rod and its striking cam to rotate. This simplifies the electrical control system and reduces cost and energy consumption.

[0010] Furthermore, in the above technical solution, ventilation openings are provided on both sides of the feeding box, and a primary fan and a secondary fan are fixedly installed in the ventilation openings respectively.

[0011] In this technical solution, four primary fans and two secondary fans are installed. After the primary and secondary fans are started, room temperature or cooled air is blown into the feeding box. This airflow is directly blown onto the hot, softened plastic residue falling from the feed inlet. Through forced convection heat transfer, the heat of the residue is quickly removed, causing its surface temperature to decrease, its hardness to increase, and its viscosity to decrease. This changes it from a semi-molten, viscous state to a harder, more brittle state, which is a prerequisite for preventing adhesion and a guarantee for smooth subsequent crushing.

[0012] In the above technical solution, an arc-shaped deceleration plate is further fixedly installed on the inner wall of the feeding box.

[0013] In this technical solution, some high-temperature waste material will first fall onto the arc-shaped deceleration plate, which can block the waste material from directly entering the lower part of the guide plate. Through the arc surface, it can slide down onto the guide plate below more smoothly and at a more suitable angle, thereby increasing the cooling time of air cooling and avoiding the waste material from splashing or accumulating unevenly due to direct high-speed impact.

[0014] In the above technical solution, a further step is to provide a sliding opening on one side of the crushing box, and a collection box is slidably installed inside the sliding opening.

[0015] In this technical solution, the plastic fragments crushed by the crushing roller assembly fall directly into the collection box below. When the collection box is nearly full, it can be pulled out directly from the sliding opening for cleaning or transfer, and then the empty box can be pushed back.

[0016] In the above technical solution, a drive motor is further fixedly installed on one side of the crushing box, and the output end of the drive motor is fixedly connected to the input end of the crushing roller assembly.

[0017] In this technical solution, the drive motor provides power to the entire device and directly drives the crushing roller assembly to rotate for crushing operations.

[0018] In the above technical solution, the primary fan is located above the secondary fan, and the arc-shaped deceleration plate is on the same horizontal plane as the secondary fan.

[0019] In this technical solution, the layout allows for a shorter residence time of the plastic residue on the curved deceleration plate, enabling rapid hardening by four primary fans before it enters the guide plate. Conversely, the longer residence time of the plastic residue on the guide plate allows for air-cooling hardening by two secondary fans, resulting in a more thorough and uniform cooling effect.

[0020] The beneficial effects of this utility model are: 1. This waste material collection device for a plastic extruder uses a secondary fan to cool down the plastic waste material falling onto the guide plate in the feeding box, increasing its hardness. Then, the drive wheel rotates, which in turn drives the transmission wheel via a transmission belt. The transmission wheel drives the transmission rod, which in turn drives the striking cam. The striking cam strikes the lower side of the guide plate, and under the action of the sliders on both sides and the vibration spring, the guide plate vibrates, assisting in the conveying of the plastic waste material and preventing blockage that could affect crushing.

[0021] 2. The residual material collection device for plastic extruders uses a primary fan to cool the residual plastic material falling onto the arc-shaped deceleration plate and guides it to the upper part of the guide plate, preventing the residual plastic material from falling directly to the bottom of the guide plate without being cooled and hardened by air, thus preventing sticking and clogging. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 A magnified schematic diagram of the structure of region A; Figure 3 This is a cross-sectional structural diagram of the feeding box in this utility model; Figure 4 This is a schematic diagram of the structure of the crushing box and the collecting box in this utility model.

[0023] The markings in the diagram are as follows: 1. Crushing box; 2. Crushing roller assembly; 3. Drive wheel; 4. Drive belt; 5. Feeding box; 6. Drive motor; 7. Transmission wheel; 8. Slider; 9. Vibration spring; 10. Primary fan; 11. Secondary fan; 12. Arc-shaped deceleration plate; 13. Guide plate; 14. Transmission rod; 15. Striking cam; 16. Collection box. Detailed Implementation

[0024] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Example 1: This example provides a waste material collection device for a plastic extruder, including a crushing box 1, a crushing roller group 2 rotatably mounted on the crushing box 1, and a crushing opening on the upper side of the crushing box 1; Feeding box 5 is fixedly installed on the upper side of crushing box 1. A discharge port is opened on one side of feeding box 5, a feed port is opened on the upper side of feeding box 5, and sliding ports are opened on both sides of feeding box 5. A slider 8 is slidably installed in each of the two sliding ports. A guide plate 13 is fixedly installed on the opposite side of the two sliders 8. Vibration springs 9 are fixedly installed on the upper and lower sides of the two sliders 8. The other end of the vibration spring 9 is fixedly installed on the inner wall of the sliding port. A transmission rod 14 is rotatably installed on the inner wall of feeding box 5. A striking cam 15 is fixedly installed on the surface of transmission rod 14.

[0027] The crushing roller assembly 2, rotatably mounted inside the crushing chamber 1, consists of two crushing rollers. Both ends of the two crushing rollers extend out of the crushing chamber 1, and gears are fixedly installed on the same side of each crushing roller. The two gears mesh with each other, causing the two crushing rollers to drive in opposite directions simultaneously to crush the plastic residue. A crushing port is opened on the upper side of the crushing chamber 1, which communicates with the upper component. A feeding box 5 is fixedly installed on the upper side of the crushing chamber 1. One side has a discharge port that connects with the crushing port, and the upper side has a feed port for receiving the residue discharged from the extruder. A guide plate 13 is installed at an angle to receive and guide the residue to slide towards the discharge port. Vibration springs 9 are fixedly installed on the upper and lower sides of each slider 8. The other end of the vibration spring 9 is fixedly installed on the inner wall of the sliding port. The high-temperature softened plastic residue falls from the feed port into the feeding box 5 and onto the inclined guide plate 13. The transmission rod 14 drives the striking cam 15 to rotate continuously. When the cam's protruding part rotates and impacts the lower side of the guide plate 13, it pushes the guide plate 13 and slider 8 to undergo a short displacement against the elastic force of the vibration spring 9. After the cam's protruding part rotates, the elastic force of the vibration spring 9 causes the guide plate 13 to quickly rebound. This process generates high-frequency, micro-amplitude mechanical vibration, which is transmitted to the plastic residue on the guide plate 13. The mechanical vibration effectively breaks the adhesion between the plastic residue and the surface of the guide plate 13, preventing the semi-molten residue from sticking to the plate or accumulating at the discharge port. At the same time, the vibration also allows the plastic residue to quickly come into contact with the air, causing it to harden rapidly and preventing it from adhering to the crushing roller group 2 during crushing.

[0028] Example 2: This example provides a waste material collection device for a plastic extruder. In addition to the technical solutions of the above examples, it also has the following technical features: a drive wheel 3 is fixedly installed on one side of the crushing roller group 2, one end of the transmission rod 14 extends to the outside of the feeding box 5 and a transmission wheel 7 is fixedly installed thereon, and the same drive belt 4 is installed on the surfaces of the drive wheel 3 and the transmission wheel 7.

[0029] A drive wheel 3 is fixedly installed on one side of the crushing roller assembly 2 where plastic waste is collected. One end of the transmission rod 14, where plastic waste is collected, extends to the outside of the feeding box 5 and is fixedly installed with a transmission wheel 7. A drive belt 4 is fitted onto the surfaces of the drive wheel 3 and the transmission wheel 7. When the crushing roller assembly 2 is driven to rotate, it drives the drive wheel 3 to rotate synchronously. The drive wheel 3 transmits power to the transmission wheel 7 via the drive belt 4, thereby driving the transmission rod 14 and its striking cam 15 to rotate. This simplifies the electrical control system and reduces cost and energy consumption.

[0030] Example 3: This example provides a waste material collection device for a plastic extruder. In addition to the technical solutions of the above examples, it also has the following technical features: ventilation openings are provided on both sides of the feeding box 5, and a primary fan 10 and a secondary fan 11 are fixedly installed in the ventilation openings respectively.

[0031] Four primary fans (10) and two secondary fans (11) are installed. After the primary fans (10) and secondary fans (11) are started, they blow room temperature or cooled air into the feeding box (5). This airflow blows directly onto the hot, softened plastic residue falling from the feed inlet. Through forced convection heat transfer, the heat of the residue is quickly carried away, reducing its surface temperature, increasing its hardness, and decreasing its viscosity. This changes it from a semi-molten, viscous state to a harder, more brittle state, which is a prerequisite for preventing adhesion and a guarantee for smooth subsequent crushing.

[0032] Example 4: This example provides a waste material collection device for a plastic extruder. In addition to the technical solutions of the above examples, it also has the following technical features: an arc-shaped slowing plate 12 is fixedly installed on the inner wall of the feeding box 5.

[0033] Some of the high-temperature waste material will first fall onto the arc-shaped deceleration plate 12, which can block the waste material from directly entering the lower part of the guide plate 13. Through the arc surface, it can slide more smoothly and at a more suitable angle onto the guide plate 13 below, thereby increasing the cooling time of the air-cooled system and preventing the waste material from splashing or accumulating unevenly due to direct high-speed impact.

[0034] Example 5: This example provides a waste material collection device for a plastic extruder. In addition to the technical solutions of the above examples, it also has the following technical features: a sliding opening is provided on one side of the crushing box 1, and a collection box 16 is slidably installed in the sliding opening.

[0035] The plastic fragments crushed by the crushing roller assembly 2 fall directly into the collection box 16 below. When the collection box 16 is full, it can be pulled out directly from the sliding opening for cleaning or transfer, and then the empty box can be pushed back.

[0036] Example 6: This example provides a waste material collection device for a plastic extruder. In addition to the technical solutions of the above examples, it also has the following technical features: a drive motor 6 is fixedly installed on one side of the crushing box 1, and the output end of the drive motor 6 is fixedly connected to the input end of the crushing roller group 2.

[0037] Among them, the drive motor 6 provides power to the entire device and directly drives the crushing roller group 2 to rotate for crushing operations.

[0038] Example 7: This example provides a waste material collection device for a plastic extruder. In addition to the technical solutions of the above examples, it also has the following technical features: the primary fan 10 is located above the secondary fan 11, and the arc-shaped deceleration plate 12 is on the same horizontal plane as the secondary fan 11.

[0039] This layout allows for a shorter residence time of residual plastic material on the curved deceleration plate 12, enabling rapid hardening using four primary fans 10 before it enters the guide plate 13. Conversely, the longer residence time of residual plastic material on the guide plate 13 allows for air-cooling hardening using two secondary fans 11, resulting in a more thorough and uniform cooling effect.

[0040] Working principle: When the device is in use, the feed port on the upper side of the feeding box 5 is first attached to the extrusion area of ​​the plastic extruder. As the plastic is continuously extruded, some excess material will be squeezed out through the extrusion port and enter the feeding box 5 through the feed port. Start the primary fan 10, the secondary fan 11 and the drive motor 6. The secondary fan 11 cools down the plastic residue falling into the guide plate 13 in the feeding box 5 to increase its hardness. The primary fan 10 cools down the plastic residue falling into the arc-shaped deceleration plate 12 and guides it to the upper part of the guide plate 13, thereby gathering the plastic residue on the upper part of the guide plate 13. The output of the drive motor 6 drives the crushing roller group 2 to rotate. The crushing roller group 2 crushes and collects the incoming hardened plastic residue while driving the drive wheel 3 to rotate. The drive wheel 3 drives the transmission wheel 7 to rotate through the transmission belt. The transmission wheel 7 drives the transmission rod 14 to rotate. The transmission rod 14 drives the striking cam 15 to rotate. The striking cam 15 strikes the lower side of the guide plate 13. Under the action of the sliders 8 on both sides and the vibration spring 9, the guide plate 13 vibrates, which helps to transport the plastic residue and prevents it from getting blocked. After crushing, the remaining plastic material enters the collection box 16 for collection. After crushing is completed, the collection box 16 is removed to complete the collection of the remaining material.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application is not limited to the specific embodiments described above; the specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many other modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application. (Plastic waste collection.)

Claims

1. A waste material collection device for a plastic extruder, characterized in that, include: A crushing box (1) is provided with a crushing roller assembly (2) rotatably mounted on the crushing box (1), and a crushing opening is provided on the upper side of the crushing box (1). Feeding box (5), the feeding box (5) is fixedly installed on the upper side of crushing box (1), the feeding box (5) has a discharge port on one side, the feeding box (5) has a feed inlet on the upper side, the feeding box (5) has sliding ports on both sides, the two sliding ports are slidably installed with sliders (8), the opposite surfaces of the two sliders (8) are fixedly installed with guide plates (13), the upper and lower sides of the two sliders (8) are fixedly installed with vibration springs (9), the other end of the vibration springs (9) is fixedly installed on the inner wall of the sliding port, the inner wall of the feeding box (5) is rotatably installed with a transmission rod (14), the surface of the transmission rod (14) is fixedly installed with a striking cam (15), the two sides of the feeding box (5) are provided with ventilation ports, the ventilation ports are respectively fixedly installed with a primary fan (10) and a secondary fan (11), and the inner wall of the feeding box (5) is fixedly installed with an arc-shaped deceleration plate (12).

2. The waste material collection device for a plastic extruder according to claim 1, characterized in that, A drive wheel (3) is fixedly installed on one side of the crushing roller group (2), and one end of the transmission rod (14) extends to the outside of the feeding box (5) and is fixedly installed with a transmission wheel (7). The drive wheel (3) and the transmission wheel (7) are fitted with the same drive belt (4).

3. The waste material collection device for a plastic extruder according to claim 1, characterized in that, A sliding opening is provided on one side of the crushing box (1), and a collection box (16) is slidably installed in the sliding opening.

4. The waste material collection device for a plastic extruder according to claim 1, characterized in that, A drive motor (6) is fixedly installed on one side of the crushing box (1), and the output end of the drive motor (6) is fixedly connected to the input end of the crushing roller group (2).

5. A waste material collection device for a plastic extruder according to claim 1, characterized in that, The primary fan (10) is located above the secondary fan (11), and the arc-shaped deceleration plate (12) is on the same horizontal plane as the secondary fan (11).

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