A waste recovery device for high polymer foam box production

Abstract

The application discloses a kind of waste recovery equipment of polymer foam box production, it is related to plastic waste recovery technical field, including rack, rack is slidably connected with push plate, the lateral wall of rack is rotatably connected with the rotation roller of symmetrical distribution between push plate, each rotation roller is rotatably connected with several cutting knives for crushing material, each rotation roller is equipped with mounting sleeve at inlet end, each rotation roller is equipped with bearing at inlet end, each rotation roller is rotatable in push plate by bearing, rack is rotatably connected with rotary frame.The application ensures the stable high-speed operation of cutting knife by centrifugal locking mechanism, avoids loosening deviation, improves crushing effect;Combined with detachable transmission structure and linkage locking component, the tool is replaced simply and safely, and the maintenance cost is reduced;Overall design is compact, improve waste recovery efficiency, enhance equipment stability and safety.

Description

Technical Field

[0001] This invention relates to the field of plastic waste recycling technology, and in particular to a waste recycling device for the production of polymer foam boxes. Background Technology

[0002] Polymer foam materials (such as EPS and EPE) are widely used in packaging, construction, and logistics due to their lightweight, heat insulation, and cushioning properties. However, these materials have extremely high chemical stability and are difficult to degrade in the natural environment. If not disposed of properly, they can cause long-term pollution of soil and water bodies. Recycling is a key way to solve this environmental problem. By physically recycling waste foam into recycled particles, we can reduce the consumption of petroleum resources and promote the development of a circular economy.

[0003] In the physical recycling process, waste foam boxes from sources such as industrial waste and commercial packaging waste must first be collected, sorted according to material, color, and impurity content, and then crushed into small fragments by a crusher. However, existing foam crushers have significant shortcomings: crushers typically operate at high speeds of thousands of revolutions per minute, and the blades wear down quickly due to prolonged friction with the foam material, requiring frequent replacements and increasing maintenance costs. Although there have been attempts to improve the process by using highly wear-resistant materials or adjustable blades, self-sharpening technology is not yet widespread. Furthermore, the industry suffers from low blade standardization; blade specifications vary between manufacturers, and installation is complex. Replacement requires specialized tools or technicians, making the process cumbersome, extending maintenance time, increasing labor costs, and complicating spare parts inventory management.

[0004] Based on the above situation, there is an urgent need for a waste recycling device for the production of polymer foam boxes. Summary of the Invention

[0005] In order to overcome the shortcomings of existing foam crusher blades that are prone to dulling, complicated to replace, and have high maintenance costs, this invention provides a waste recycling device for polymer foam box production.

[0006] A waste recycling device for polymer foam box production includes a frame, a push plate slidably connected to the frame, symmetrically distributed rotating rollers rotatably connected between the side wall of the frame and the push plate, a plurality of cutting blades for crushing materials being keyed to each rotating roller, an installation sleeve being provided at the inlet end of each rotating roller, a bearing being provided at the inlet end of each rotating roller, and each rotating roller rotating within the push plate via the bearings. A rotating frame is rotatably connected to the frame, and a locking component is provided on the rotating frame to limit the position of the push plate.

[0007] Furthermore, it is particularly preferred that the locking assembly includes a fixed frame fixed to the rotating frame, and the frame is rotatably connected to symmetrically distributed rotating rods on the side near the push plate. Each rotating rod is connected to the frame with a torsion spring, and each torsion spring is wound around an adjacent rotating rod. Each push plate is fixed to a limiting plate on the side near the rotating rod, and each limiting plate and the push plate are provided with a sliding groove for the rotating rod to slide. Each rotating rod has a protrusion at its end, and the protrusion is located in an adjacent sliding groove.

[0008] Furthermore, it is particularly preferred that the frame has symmetrically distributed supports fixedly connected to the side away from the push plate, and motors are installed on the symmetrically distributed supports. A main connecting frame is keyed to the output shaft of each motor. A secondary connecting frame is fixedly connected to the end away from the bearing of each rotating roller. Several protruding teeth are provided along the circumferential direction on the side of the secondary connecting frame that is close to the main connecting frame, forming a detachable gear transmission structure. Adjacent secondary connecting frames and main connecting frames are engaged with each other by the protruding teeth.

[0009] Furthermore, it is particularly preferred that the rotating frame is fixed to symmetrically distributed pressing frames on the side away from the fixed frame, and symmetrically distributed telescopic rods are fixed to the outer shell of each motor. A fixing ring is fixed between the telescopic ends of adjacent telescopic rods. Each fixing ring is fitted onto the adjacent main connecting frame, and each main connecting frame rotates within the fixing ring. Each fixing ring is provided with symmetrically distributed protrusions. Each pressing frame is provided with symmetrically distributed pressing feet on the side near the fixing ring, and each pressing foot is provided with an inclined surface that facilitates wedge-shaped pressing.

[0010] Furthermore, it is particularly preferred that each rotating roller has several sliding blocks circumferentially connected on the side near the mounting sleeve, and each sliding block is connected to the adjacent rotating roller with a spring, forming a centrifugal locking mechanism.

[0011] Furthermore, it is particularly preferred that each sliding block has a bevel on the side near the mounting sleeve, forming a wedge-shaped extrusion structure.

[0012] Furthermore, it is particularly preferred that the rack is provided with a transparent glass plate that serves as a visual observation window.

[0013] Furthermore, it is particularly preferred that the rotating frame is rotatably connected with a latch, and the frame has a locking lug on the side near the latch. The rotating frame is limited by the mechanical engagement of the latch and the locking lug.

[0014] Furthermore, it is particularly preferred that the rotating frame has symmetrically distributed inclined plates as a material guiding structure.

[0015] Beneficial effects: This invention, by incorporating a centrifugal locking mechanism, ensures the stability and reliability of the cutting blade during high-speed operation, preventing loosening and displacement caused by axial sliding, thus improving the crushing effect. Simultaneously, the equipment employs a detachable gear transmission structure and a linkage locking assembly, making blade replacement simple and safe, significantly reducing maintenance difficulty and costs. The overall structural design is compact and reasonable, not only improving waste recycling efficiency but also enhancing the stability and safety of equipment operation, demonstrating significant practicality and economy. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0018] Figure 3 This is a three-dimensional structural cross-sectional view of the rotating roller, cutting blade, and mounting sleeve of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the components of the present invention, such as the push plate, the fixing frame, and the rotating rod.

[0020] Figure 5 This is a three-dimensional structural diagram of the components of the present invention, such as the push plate, rotating rod, and torsion spring.

[0021] Figure 6 This is a three-dimensional structural cross-sectional view of the bracket, motor, and sub-connector frame of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the motor, auxiliary connecting frame, and main connecting frame.

[0023] Figure 8 This is a three-dimensional structural cross-sectional view of the components of the present invention, such as the pressing frame, telescopic rod, and fixing ring.

[0024] Figure 9 This is a three-dimensional structural cross-sectional view of the bracket, telescopic rod, and fixing ring of the present invention.

[0025] Figure 10 This is a three-dimensional structural cross-sectional view of the rotating roller, sliding block, and spring components of the present invention.

[0026] Figure 11 This is a three-dimensional structural diagram of the sliding block and spring of the present invention.

[0027] Figure 12 This is a three-dimensional structural diagram of the frame, transparent glass plate, and latches of the present invention.

[0028] In the diagram: 101, frame; 102, transparent glass plate; 103, rotating roller; 104, cutting blade; 105, mounting sleeve; 106, bearing; 107, rotating frame; 108, push plate; 1081, limiting plate; 109, fixed frame; 110, rotating rod; 111, torsion spring; 201, bracket; 202, motor; 203, auxiliary connecting frame; 204, main connecting frame; 301, pressing frame; 302, telescopic rod; 303, fixing ring; 401, sliding block; 402, spring; 501, latch. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0030] Example 1: A waste recycling device for the production of polymer foam boxes, such as Figures 1-4 As shown, the machine includes a frame 101 with a supporting body. The top of the frame is open, serving as a material inlet for feeding materials into it. The back plate of the frame 101 near the bottom opening serves as a discharge outlet for discharging the crushed materials. A push plate 108, which provides support and limit, is slidably connected to the frame 101. Symmetrically distributed rotating rollers 103 are rotatably connected between the side wall of the frame 101 and the push plate 108. Each rotating roller 103 is keyed with several cutting blades 104 for crushing materials. Each rotating roller 103 has an installation sleeve 105 at its inlet end to axially limit the cutting blades 104 on the rotating roller 103 and prevent the cutting blades 104 from shifting during rotation.

[0031] Each rotating roller 103 is equipped with a bearing 106 at its inlet end. Each rotating roller 103 rotates within the push plate 108 via the bearing 106, reducing friction during rotation. A rotating frame 107 is rotatably connected to the frame 101. The rotating frame 107 covers the top of the frame 101. Symmetrically distributed inclined plates are provided inside the rotating frame 107 as a material guiding structure. Gravity is used to guide the material to slide precisely into the cutting area between the two rotating rollers 103, ensuring that the material can enter the crushing station in a timely manner, improving crushing efficiency and material utilization, so as to fully and uniformly crush the material.

[0032] like Figure 4 and Figure 5As shown, specifically, it also includes a fixed frame 109 fixed to the rotating frame 107. The frame 101 has symmetrically distributed rotating rods 110 on the side near the push plate 108, which serve as transmission and limiting functions. Each rotating rod 110 is connected to the frame 101 with a torsion spring 111 that provides reset power. Each torsion spring 111 is wound around the adjacent rotating rod 110 to form an elastic constraint structure. The push plate 108 has a limiting plate 1081 fixed to the side near the rotating rod 110, which serves as linkage limiting. Each limiting plate 1081 and the push plate 108 are provided with a sliding groove for the rotating rod 110 to slide, forming a sliding guide mechanism.

[0033] Each rotating rod 110 has a protruding post at its end, which is located in an adjacent sliding groove to form a sliding fit structure, thereby realizing the motion association between the rotating rod 110 and the push plate 108. When the rotating frame 107 covers the frame 101, the fixing frame 109 will abut against the rotating rod 110 to make it fit tightly against the side wall of the frame 101, so that the torsion spring 111 is always in a torsional energy storage state. Thus, the push plate 108 is firmly locked in the working position by the cooperation of the protruding post and the sliding groove, preventing it from shifting during equipment operation.

[0034] Example 2: Based on Example 1, such as Figure 6 and Figure 7 As shown, specifically, the frame 101 has symmetrically distributed brackets 201 fixed on the side away from the push plate 108, which serve as mounting bases for stable support of the drive components. Each symmetrically distributed bracket 201 is equipped with a motor 202 that provides rotational power. Each motor 202 has a main connecting frame 204 that transmits power on its output shaft, ensuring efficient power output. Each rotating roller 103 has a secondary connecting frame 203 fixed on the end away from the bearing 106 for receiving power. The secondary connecting frame 203 and the main connecting frame 204 are provided with several protruding teeth along the circumferential direction on the side that are close to each other, forming a detachable gear transmission structure. Adjacent secondary connecting frames 203 and main connecting frames 204 are engaged with each other through the protruding teeth to achieve stable power transmission from the motor 202 to the rotating roller 103, while also facilitating subsequent separation and maintenance.

[0035] like Figure 8 and Figure 9As shown, specifically, the rotating frame 107 is fixed to the symmetrically distributed pressing frame 301 on the side away from the fixed frame 109, serving as a linkage control component to transmit the opening and closing action of the rotating frame 107; each motor 202 has a symmetrically distributed telescopic rod 302 fixed to its housing, which serves as an elastic support structure to achieve axial telescopic adjustment. A return spring (built-in, not shown) is connected between the telescopic end and the fixed end to provide a reset spring force. A fixed ring 303 is fixed between the telescopic ends of adjacent telescopic rods 302 to serve as a connection and guide. Each fixed ring 303 is sleeved on the adjacent main connecting frame 204 to form a sliding support structure. Each main connecting frame 204 rotates within the fixed ring 303 to ensure smooth rotation without jamming.

[0036] Each fixed ring 303 has symmetrically distributed protrusions, which serve as force-bearing components to receive pressing force. Each pressing frame 301 has symmetrically distributed pressure feet on the side near the fixed ring 303, and each pressure foot has an inclined surface to facilitate wedge-shaped pressing, forming a limiting structure. When the rotating frame 107 covers the frame 101, each pressing frame 301 abuts against the protrusions of the adjacent fixed ring 303 through its pressure feet, so that the telescopic end of the telescopic rod 302 is in a stretched state. The fixed ring 303 pushes the main connecting frame 204 and the auxiliary connecting frame 203 to mesh tightly, ensuring that the power transmission is not disconnected.

[0037] like Figure 10 and Figure 11 As shown, specifically, each rotating roller 103 has several sliding blocks 401 that automatically lock on the side near the mounting sleeve 105, circumferentially connected. Each sliding block 401 is connected to an adjacent rotating roller 103 by a spring 402 that provides a restoring force, forming a centrifugal locking mechanism. When the rotating roller 103 rotates, under the action of centrifugal force, the sliding block 401 will overcome the spring force of the spring 402 and be thrown out, extending from the rotating roller 103, thereby firmly locking the mounting sleeve 105 and preventing axial sliding during high-speed rotation. This prevents the cutting blade 104 from becoming loose or shifting, ensuring the stability and crushing effect of the crushing operation.

[0038] Each sliding block 401 has an inclined surface on the side near the mounting sleeve 105, forming a wedge-shaped extrusion structure. When the sliding block 401 is thrown out under the action of centrifugal force, the sliding block 401 can press the mounting sleeve 105 against the cutting blade 104 through the inclined surface, forming an axial preload, thereby reliably limiting the cutting blade 104 on the rotating roller 103 and ensuring that the cutting blade 104 always maintains a precise cutting position during the crushing process.

[0039] like Figure 12As shown, specifically, the frame 101 is equipped with a transparent glass plate 102 as a visual observation window, allowing operators to monitor the material crushing status, progress, and internal operation of the equipment in real time, facilitating timely detection and handling of abnormalities. A locking buckle 501 for quick locking is rotatably connected to the rotating frame 107. The frame 101 has a locking lug on the side near the locking buckle 501 for secure locking. Through the mechanical engagement of the locking buckle 501 and the locking lug, the rotating frame 107 is firmly fixed to the frame 101, preventing accidental opening of the rotating frame 107 during operation, ensuring operational safety, and guaranteeing the sealing of the feed channel.

[0040] Working principle: Initial standby state: The latch 501 engages with the locking lug of the frame 101, locking the rotating frame 107 to the top of the frame 101. At this time, the fixed frame 109 presses against the rotating rod 110 to make it close to the frame 101, and the torsion spring 111 maintains pre-torsion stored energy; the protrusion of the rotating rod 110 is embedded in the groove of the limiting plate 1081 and the push plate 108, and the push plate 108 provides support and axial limit for the rotating roller 103 through the bearing 106. At the same time, the pressing foot of the pressing frame 301 stretches the telescopic rod 302 to the right through the protrusion of the fixed ring 303, so that the main connecting frame 204 and the secondary connecting frame 203 are tightly engaged, and the equipment is in the ready-to-start state.

[0041] Crushing operation process: After starting the motor 202, the output shaft drives the rotating roller 103 to rotate through the meshing secondary connecting frame 203 and the main connecting frame 204. When the rotating roller 103 rotates at high speed, the sliding block 401 is thrown out by the centrifugal force overcoming the elastic force of the spring 402. Its inclined surface presses against the mounting sleeve 105 to form axial pre-tightening, ensuring that the cutting blade 104 rotates with the roller without axial displacement under the action of the key connection.

[0042] Workers feed waste material into the rotating frame 107, where it is guided by an inclined plate into the cutting area between two sets of cutting blades 104, where it is pulverized by the high-speed rotating blades. During the operation, the pulverization status can be monitored in real time through a transparent glass plate 102, and the pulverized material is discharged from the bottom outlet.

[0043] As described in the background art, with prolonged operation of the cutting blade 104, the blade experiences long-term friction with the foam material, causing the cutting edge to become dull quickly and requiring replacement. The specific operation is as follows: Turn off the motor 202, and the main connecting frame 204 stops rotating. Turn the locking buckle 501 clockwise to disengage it from the locking lug, flipping open the rotating frame 107, causing the fixed frame 109 and the pressing frame 301 to flip together. After the fixed frame 109 disengages from the rotating rod 110, under the elastic force of the torsion spring 111, the rotating rod 110 flips upward, pushing the push plate 108 to slide to the right and disengage from the bearing 106 through the cooperation of the protrusion and the slide groove, leaving the right end of the rotating roller 103 open.

[0044] After the pressing frame 301 flips over, its pressing foot disengages from the protrusion of the fixing ring 303. The telescopic rod 302 retracts to the left under the action of the return spring, causing the fixing ring 303 and the main connecting frame 204 to move to the left, so that the main connecting frame 204 disengages from the protrusion of the auxiliary connecting frame 203. The power transmission at the right end of the rotating roller 103 is interrupted, ensuring the safety of tool changing. Even if the motor 202 is accidentally started, the rotating roller 103 will not rotate.

[0045] After the rotating roller 103 stops rotating, the sliding block 401 is reset under the elastic force of the spring 402 and no longer presses against the mounting sleeve 105. Push the mounting sleeve 105 to the right to disengage it from the rotating roller 103, push out the old cutting blades 104 one by one, and then put in the new cutting blades 104 one by one. After that, put the mounting sleeve 105 back in its original position.

[0046] Push the push plate 108 back to its original position to the left. The rotating rod 110 flips downward and fits against the frame 101, and the torsion spring 111 returns to its initial state. Flip the rotating frame 107 forward so that it covers the frame 101 and fasten the locking buckle 501. The fixing frame 109 again presses against the rotating rod 110, locking the position of the push plate 108, and the right end of the rotating roller 103 closes. At the same time, the pressing frame 301 flips back to its original position, and the inclined surface of its pressing foot presses against the protrusion of the fixing ring 303, pushing the fixing ring 303 and the main connecting frame 204 to the right, so that the main connecting frame 204 engages with the protrusion of the auxiliary connecting frame 203. The telescopic rod 302 extends, the return spring returns to its initial state, and the rotating roller 103 is reconnected to the output shaft of the motor 202, allowing the crushing operation to continue.

[0047] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A waste recycling device for polymer foam box production, comprising a frame (101), characterized in that: A push plate (108) is slidably connected to the frame (101). A symmetrically distributed rotating roller (103) is rotatably connected between the side wall of the frame (101) and the push plate (108). Each rotating roller (103) is keyed with several cutting blades (104) for crushing materials. Each rotating roller (103) is provided with an installation sleeve (105) at its inlet end. Each rotating roller (103) is provided with a bearing (106) at its inlet end. Each rotating roller (103) rotates in the push plate (108) through the bearing (106). A rotating frame (107) is rotatably connected to the frame (101). The rotating frame (107) is provided with a locking component that limits the position of the push plate (108). The locking assembly includes a fixed frame (109) fixed to the rotating frame (107). The frame (101) is rotatably connected to symmetrically distributed rotating rods (110) on the side near the push plate (108). Each rotating rod (110) is connected to the frame (101) with a torsion spring (111). Each torsion spring (111) is wound around the adjacent rotating rod (110). The push plate (108) is fixed to a limiting plate (1081) on the side near the rotating rod (110). Each limiting plate (1081) and the push plate (108) are provided with a sliding groove for the rotating rod (110) to slide. Each rotating rod (110) has a protrusion at its end, which is located in the adjacent sliding groove. The frame (101) has symmetrically distributed brackets (201) fixed on the side away from the push plate (108). Motors (202) are installed on the symmetrically distributed brackets (201). A main connecting frame (204) is keyed to the output shaft of each motor (202). A secondary connecting frame (203) is fixed to the end of each rotating roller (103) away from the bearing (106). Several protruding teeth are provided along the circumferential direction on the side of the secondary connecting frame (203) and the main connecting frame (204) that are close to each other, forming a detachable gear transmission structure. The adjacent secondary connecting frames (203) and the main connecting frame (204) are engaged by the protruding teeth. The rotating frame (107) is fixed to the symmetrically distributed pressing frame (301) on the side away from the fixed frame (109). The outer shell of each motor (202) is fixed with symmetrically distributed telescopic rods (302). The telescopic ends of adjacent telescopic rods (302) are fixed with fixed rings (303). Each fixed ring (303) is sleeved on the adjacent main connecting frame (204). Each main connecting frame (204) rotates in the fixed ring (303). Each fixed ring (303) is provided with symmetrically distributed protrusions. Each pressing frame (301) is provided with symmetrically distributed press feet on the side close to the fixed ring (303). Each press foot is provided with an inclined surface that facilitates wedge-shaped pressing. Each rotating roller (103) has several sliding blocks (401) circumferentially connected on the side near the mounting sleeve (105). Each sliding block (401) is connected to the adjacent rotating roller (103) by a spring (402), forming a centrifugal locking mechanism.

2. The waste recycling equipment for polymer foam box production as described in claim 1, characterized in that: Each sliding block (401) has a bevel on the side near the mounting sleeve (105) to form a wedge-shaped extrusion structure.

3. The waste recycling equipment for polymer foam box production as described in claim 2, characterized in that: The rack (101) is provided with a transparent glass plate (102) that serves as a visual observation window.

4. The waste recycling equipment for polymer foam box production as described in claim 3, characterized in that: The rotating frame (107) is rotatably connected to a latch (501). The frame (101) has a lock nose on the side near the latch (501). The rotating frame (107) is limited by the mechanical engagement of the latch (501) and the lock nose.

5. The waste recycling equipment for polymer foam box production as described in claim 4, characterized in that: The rotating frame (107) has symmetrically distributed inclined plates inside, which serve as material guiding structures.

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