A stepped crushing device for carton recycling processing line
By employing an openable crushing chamber, independent bearing design, and adaptive collection box, the problem of inconvenient product removal after crushing is solved, crushing efficiency and system lifespan are improved, and the automation and integration of the equipment are enhanced.
Patent Information
- Application Number
- CN202521923064.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-08
AI Technical Summary
The existing cardboard box recycling line uses a stepped shredder, which makes it difficult for workers to easily remove the shredded products after shredding, thus affecting work efficiency.
The design features an openable crushing chamber with an independently designed drive shaft and bearing housing for easy maintenance. The crushing gears can be customized in terms of tooth shape and spacing. The collection box is self-adjusting via limit springs and limit plates. The feed hopper and collection box are connected by a quick-release mechanism, and the drive belt transmits power evenly.
It enables convenient material cleaning and maintenance, improves crushing efficiency, extends the life of the transmission system, and enhances system integration and automation.
Smart Images

Figure CN224672763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cardboard box recycling technology, and in particular to a stepped crushing device for a cardboard box recycling line. Background Technology
[0002] A stepped cardboard shredder is a specialized device for processing cardboard waste. Its core function lies in using a stepped screen to achieve graded shredding and compression, effectively improving processing efficiency. The device mainly consists of a shredding chamber, a compression chamber, a dual shredding mechanism, and a compression mechanism. The shredding chamber contains a dual shredding mechanism that breaks down the cardboard through shearing and tearing. The compression mechanism, located below the shredding chamber, works in conjunction with the compression chamber to compress the material. A cardboard shredder, also known as a cardboard expansion cutter, is a device used to shred and break down paper products.
[0003] An existing stepped crushing device for cardboard box recycling lines makes it inconvenient for workers to easily remove the crushed products after the entire equipment has finished crushing and processing them, thus affecting the overall efficiency of the equipment in crushing and processing products. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a stepped crushing device for a cardboard box recycling line.
[0005] This utility model is achieved by the following technical solution: a stepped crushing device for a cardboard box recycling line, including a crushing box, a feeding hopper fixedly connected to the top of the crushing box, a drive shaft rotatably connected inside the crushing box, a pulley fixedly connected to the surface of the drive shaft rotatably connected, a drive belt connected to the surface of the pulley, and a drive shaft rotatably connected inside the pulley. A crushing gear is fixedly connected to the surface of the second drive shaft. A drive motor is fixedly connected to the rear end of the first drive shaft. A bearing frame is snapped into the bottom of the drive motor. Guide plates are fixedly connected to both ends of the inner wall of the crushing box. A collection box is slidably connected inside the crushing box. A rotating sleeve is fixedly connected to the front of the crushing box. A limit plate is rotatably connected inside the rotating sleeve. A fixed frame is fixedly connected to the rear end of the crushing box. A limit spring is fixedly connected inside the fixed frame.
[0006] Through the above technical solutions, the crushing box adopts an openable design, which makes it easy to clean residual materials or replace worn crushing gears. The independent bearing housing design of drive shaft one and drive shaft two allows for quick disassembly and repair when a single component fails, without the need to disassemble the entire equipment.
[0007] As a further improvement to the above solution, the second drive shaft is rotatably connected inside the crushing chamber, the rear end of the pulley is in contact with the front surface of the crushing chamber, and the drive belt is located on the front of the crushing chamber.
[0008] As a further improvement to the above scheme, the number of pulleys is set to two, and the two pulleys are symmetrically distributed on the left and right sides with the transmission belt as the center. The crushing gear is rotatably connected inside the crushing box.
[0009] Through the above technical solution, the crushing gear is installed on the two surfaces of the drive shaft. Its tooth shape and spacing can be customized according to the characteristics of the cardboard material. When the material comes into contact with the gear, the tooth tip first cuts into the cardboard to form a cut. Then, the adjacent tooth valleys generate shearing force to tear the paper into strips. Finally, the fiberization process is completed by the squeezing action of the gear meshing surface, realizing continuous operation from coarse crushing to fine crushing.
[0010] As a further improvement to the above scheme, the crushing gear is located at the bottom of the guide plate, and the number of the guide plates is set to two, which are symmetrically distributed on the left and right sides with the crushing box as the center.
[0011] As a further improvement to the above solution, the supporting frame is fixedly connected to the rear end of the crushing box, the rear end of the collection box is in contact with the front surface of the limiting spring, and the front surface of the collection box is in contact with the rear end surface of the limiting cross plate.
[0012] Through the above technical solutions, components such as the feed hopper and collection box are connected by universal flanges or quick-release buckles, which can be connected in series with other sorting and compression equipment to form a complete recycling line. Dust removal modules or metal separation devices can be added according to actual needs to improve system integration.
[0013] As a further improvement to the above scheme, the number of the rotating sleeve and the limiting horizontal plate is set to two, and the two rotating sleeves and the limiting horizontal plate are symmetrically distributed on the left and right sides with the crushing box as the center.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a collection box that is slidably connected inside the crushing chamber. Its rear part contacts a limiting spring, while its front part is constrained by a limiting horizontal plate inside a rotating sleeve. As the amount of debris in the collection box gradually increases, the spring pressure pushes the collection box to move backward until it triggers the blocking action of the limiting horizontal plate, prompting the operator to empty it in time. This adaptive adjustment mechanism avoids frequent manual monitoring and improves collection efficiency.
[0015] This invention features symmetrically distributed wheels centered on the transmission belt, which transmit the power of the drive motor synchronously to the two transmission shafts on both sides via belt drive. This ensures uniform force on the crushing gears, avoids uneven gear wear or bearing overload caused by torque deviation, and extends the service life of the transmission system. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the side anatomical structure of the present invention; Figure 3 This is a schematic diagram of the frontal anatomical structure of the present invention; Figure 4 This is a schematic diagram of the structure of this utility model from a bottom view.
[0017] Explanation of key symbols: 1. Crushing box; 2. Feed hopper; 3. Drive shaft one; 4. Pulley; 5. Drive belt; 6. Drive shaft two; 7. Crushing gear; 8. Drive motor; 9. Bearing frame; 10. Guide plate; 11. Collection box; 12. Rotating sleeve; 13. Limiting plate; 14. Fixing frame; 15. Limiting spring. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0019] Example 1
[0020] Please combine Figure 1-4 The step-type crushing device for a cardboard box recycling line in this embodiment includes a crushing box 1, a feeding hopper 2 fixedly connected to the top of the crushing box 1, a drive shaft 3 rotatably connected inside the crushing box 1, a pulley 4 fixedly connected to the surface of the drive shaft 3, a drive belt 5 connected to the surface of the pulley 4, and a drive shaft 6 fixedly connected inside the pulley 4. A crushing gear 7 is fixedly connected to the surface of the second drive shaft 6. A drive motor 8 is fixedly connected to the rear end of the first drive shaft 3. A bearing frame 9 is snapped into the bottom of the drive motor 8. Guide plates 10 are fixedly connected to both ends of the inner wall of the crushing box 1. A collection box 11 is slidably connected inside the crushing box 1. A rotating sleeve 12 is fixedly connected to the front of the crushing box 1. A limit plate 13 is rotatably connected inside the rotating sleeve 12. A fixed frame 14 is fixedly connected to the rear end of the crushing box 1. A limit spring 15 is fixedly connected inside the fixed frame 14. By setting the collection box 11 to be slidably connected inside the crushing box 1, its rear part is in contact with the limit spring 15, and its front part is constrained by the limit plate 13 inside the rotating sleeve 12. When the debris in the collection box 11 gradually increases, the spring pressure pushes the collection box 11 to move backward until it triggers the blocking action of the limit plate 13, prompting the operator to empty it in time. The adaptive adjustment mechanism avoids frequent manual monitoring and improves collection efficiency.
[0021] The crushing box 1 adopts an openable design, which makes it easy to clean residual materials or replace worn crushing gears 7. The independent bearing housing design of drive shaft 1 3 and drive shaft 2 6 allows for quick disassembly and repair when a single component fails, without the need to disassemble the entire equipment.
[0022] The drive shaft 6 is rotatably connected inside the crushing box 1, the rear end of the pulley 4 is in contact with the front surface of the crushing box 1, and the drive belt 5 is located on the front of the crushing box 1.
[0023] The number of pulleys 4 is set to two, and the two pulleys 4 are symmetrically distributed on the left and right sides with the transmission belt 5 as the center. The crushing gear 7 is rotatably connected inside the crushing box 1.
[0024] The crushing gear 7 is installed on the surface of the drive shaft 6. Its tooth shape and spacing can be customized according to the characteristics of the cardboard material. When the material comes into contact with the gear, the tooth tip first cuts into the cardboard to form a cut. Then, the adjacent tooth valleys generate shearing force to tear the paper into strips. Finally, the fiberization process is completed through the squeezing action of the gear meshing surface, realizing continuous operation from coarse crushing to fine crushing.
[0025] The crushing gear 7 is located at the bottom of the guide plate 10. There are two guide plates 10, which are symmetrically distributed on the left and right sides with the crushing box 1 as the center. The wheels are symmetrically distributed on the left and right sides with the transmission belt 5 as the center. The power of the drive motor 8 is synchronously transmitted to the two transmission shafts 6 on both sides through the belt drive, which ensures that the crushing gear 7 is subjected to uniform force and avoids uneven gear wear or bearing overload caused by torque deviation. At the same time, it extends the service life of the transmission system.
[0026] The supporting frame 9 is fixedly connected to the rear end of the crushing box 1. The rear end of the collection box 11 is in contact with the front surface of the limiting spring 15, and the front surface of the collection box 11 is in contact with the rear end surface of the limiting plate 13.
[0027] Components such as feed hopper 2 and collection box 11 are all connected by universal flanges or quick-release buckles, which can be connected in series with other sorting and compression equipment to form a complete recycling line. Dust removal modules or metal separation devices can be added according to actual needs to improve system integration.
[0028] The number of rotating sleeves 12 and limiting horizontal plates 13 is set to two, and the two rotating sleeves 12 and limiting horizontal plates 13 are symmetrically distributed on the left and right sides with the crushing box 1 as the center.
[0029] The implementation principle of the stepped shredding device for a cardboard box recycling line in this embodiment is as follows: A collection box 11 is slidably connected to the inside of the shredding box 1, with its rear part in contact with the limiting spring 15 and its front part constrained by the limiting horizontal plate 13 inside the rotating sleeve 12. When the debris in the collection box 11 gradually increases, the spring pressure pushes the collection box 11 to move backward until it triggers the blocking action of the limiting horizontal plate 13, prompting the operator to empty it in time. The adaptive adjustment mechanism avoids frequent manual monitoring and improves collection efficiency. By setting the wheels to be symmetrically distributed on the left and right sides with the transmission belt 5 as the center, the power of the drive motor 8 is synchronously transmitted to the two transmission shafts 6 on both sides through belt transmission, ensuring that the shredding gear 7 is subjected to uniform force, avoiding uneven gear wear or bearing overload caused by torque deviation, and extending the service life of the transmission system.
[0030] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A stepped crushing device for a cardboard box recycling line, characterized in that, The device includes a crushing box (1), a feeding hopper (2) is fixedly connected to the top of the crushing box (1), a drive shaft (3) is rotatably connected inside the crushing box (1), a pulley (4) is fixedly connected to the surface of the drive shaft (3), a drive belt (5) is connected to the surface of the pulley (4), and a drive shaft (6) is fixedly connected inside the pulley (4). A crushing gear (7) is fixedly connected to the surface of the second transmission shaft (6). A drive motor (8) is fixedly connected to the rear end of the first transmission shaft (3). A bearing frame (9) is snapped into the bottom of the drive motor (8). A flow guide plate (10) is fixedly connected to both the left and right ends of the inner wall of the crushing box (1). A collection box (11) is slidably connected inside the crushing box (1). A rotating sleeve (12) is fixedly connected to the front of the crushing box (1). A limiting cross plate (13) is rotatably connected inside the rotating sleeve (12). A fixed frame (14) is fixedly connected to the rear end of the crushing box (1). A limiting spring (15) is fixedly connected inside the fixed frame (14).
2. The stepped crushing device for a cardboard box recycling line as described in claim 1, characterized in that: The second drive shaft (6) is rotatably connected inside the crushing box (1), the rear end of the pulley (4) is in contact with the front surface of the crushing box (1), and the drive belt (5) is located on the front of the crushing box (1).
3. The stepped crushing device for a cardboard box recycling line as described in claim 1, characterized in that: The number of pulleys (4) is set to two, and the two pulleys (4) are symmetrically distributed on the left and right sides with the transmission belt (5) as the center. The crushing gear (7) is rotatably connected inside the crushing box (1).
4. The stepped crushing device for a cardboard box recycling line as described in claim 1, characterized in that: The crushing gear (7) is located at the bottom of the flow guide plate (10). The number of the flow guide plates (10) is set to two, and the two flow guide plates (10) are symmetrically distributed on the left and right sides with the crushing box (1) as the center.
5. The stepped crushing device for a cardboard box recycling line as described in claim 1, characterized in that: The supporting frame (9) is fixedly connected to the rear end of the crushing box (1), the rear end of the collection box (11) is in contact with the front surface of the limiting spring (15), and the front surface of the collection box (11) is in contact with the rear end surface of the limiting cross plate (13).
6. The stepped crushing device for a cardboard box recycling line as described in claim 1, characterized in that: The number of the rotating sleeve (12) and the limiting horizontal plate (13) is set to two, and the two rotating sleeves (12) and the limiting horizontal plate (13) are symmetrically distributed on the left and right sides with the crushing box (1) as the center.