Waste paper packing machine for improving packing uniformity of waste paper

Abstract

The invention claims to protect a waste paper packer for improving the packing uniformity of waste paper. The waste paper packer comprises a compression cavity; the top face of the compression cavity is an open face, a pressing head is arranged at the position, right opposite to the compression cavity, of the machine frame, the pressing head is driven by a hydraulic cylinder to ascend and descend, and the pressing head is provided with a pressure applying face matched with the open face of the compression cavity. A stacking uniformity compensation structure is formed at the bottom of the compression cavity, the stacking uniformity compensation structure comprises an air inflation base, an air nozzle is arranged on the outer side of the air inflation base, and the air inflation base can be externally connected with an air supply device through the air nozzle; the surface of the inflatable base is covered with elastic glued nylon cloth; the gluing nylon cloth is of a preformed structure and can be maintained to be of an outwards-protruding arch-shaped structure under the condition that the inflation base is inflated for pressure maintaining. The waste paper recycling device is simple and compact in structure, low in manufacturing cost, small in occupied area and particularly suitable for being arranged in small and medium-sized recycling stations serving as waste paper recycling terminals.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection machinery, and in particular to a waste paper baler for improving the uniformity of waste paper baling. Background Art

[0002] As a recyclable resource, waste paper carries significant environmental and economic value. Making full use of waste paper can not only save a lot of plant fiber raw materials, energy consumption, and reduce production costs, but also help reduce solid waste emissions, thereby protecting our environment. This practice not only brings considerable economic benefits, but also has social and environmental benefits. In the process of waste paper recycling and treatment, the packaging link is particularly critical. It not only affects the storage and transportation efficiency of waste paper, but is also directly related to the quality of waste paper and the convenience of subsequent treatment.

[0003] In most cases, waste paper has a fluffy volume characteristic. If it is transported directly without compression, its transportation cost will increase significantly, which is not conducive to the recycling of waste paper. Therefore, waste paper packaging plays a vital role in the waste paper recycling and reuse process. The waste paper baler can squeeze the waste paper concentrated in the mold through external force under normal pressure, so as to obtain a compressed and compact waste paper block, significantly reducing its volume. This process has positive significance for the storage, transportation, packaging consumption and centralized processing of waste paper; the process of waste paper baling by the waste paper baler to pack the recycled waste paper materials not only reduces the space required for transportation, but also effectively saves the corresponding transportation costs, thereby bringing economic benefits to the enterprise.

[0004] The waste paper baling equipment in the prior art mostly uses hydraulic balers to baling waste paper, and the compactness and internal uniformity of the waste paper block directly determine the performance indicators of the hydraulic baler. Among them, the horizontal baler is known for its large tonnage pressure, good working stability, large baling size, efficient baling efficiency and easy automatic operation. However, it also has the defects of large structure size, high equipment cost and expensive maintenance cost, which limits its application in small and medium-sized garbage recycling stations.

[0005] Compared with horizontal balers, vertical balers have the advantages of compact structure, small footprint, and low equipment cost, and are more suitable for small and medium-sized garbage recycling stations. However, existing vertical balers usually adopt a top single pressure head structure, and perform compression operations in a closed compression chamber, and their baling pressure is relatively low. This results in the compression rate of waste paper being usually lower than that of horizontal balers, the packaging size being limited, and the efficiency of packaging is not as good as that of horizontal balers. In addition, considering the daily stacking operation habits, waste paper materials are stacked in an arched shape in the compression chamber, and the material stacking density in the middle position is higher than that of the surrounding areas. Since vertical balers are usually not equipped with a material equalization device and the pressure head is a flat design, the density of the middle part of the compressed waste paper block is often greater than that of the outer edge, resulting in insufficient internal uniformity. This unevenness will cause gaps to appear inside the waste paper block, affecting the packaging quality, and it is easy to cause loose packages during storage, transportation, and packaging, which in turn affects the subsequent processing and utilization efficiency of waste paper. Summary of the invention

[0006] The technical problem solved by the present invention is to provide a waste paper baler for improving the uniformity of waste paper baling. The existing vertical waste paper balers have relatively backward baling quality, low compaction degree and internal uniformity defects, and can be used to solve the defects in the above-mentioned technical background.

[0007] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0008] A waste paper baler for improving waste paper baling uniformity, comprising a frame and a compression chamber arranged at the lower part of the frame;

[0009] The compression chamber is a square compression chamber, the top surface of the compression chamber is an open surface, the frame is provided with a pressure head at a position facing the open surface of the compression chamber, the pressure head is driven by a hydraulic cylinder to achieve lifting, and the pressure head has a pressure surface matching the open surface of the compression chamber;

[0010] The bottom of the compression chamber is formed with a stacking uniformity compensation structure, which includes an inflatable base, an air nozzle is arranged on the outside of the inflatable base, and an air supply device can be connected to the outside through the air nozzle; the surface of the inflatable base is covered with elastic rubber-coated nylon cloth; the rubber-coated nylon cloth is a preformed structure, which can maintain an outwardly convex arched structure when the inflatable base is inflated and pressure-maintained, and the center position of the compression chamber corresponds to the arch vertex;

[0011] When the stacking uniformity compensation structure performs the discharge process in the compression chamber, the inflation and uniformity compensation operations are performed simultaneously. The specific operation steps are as follows:

[0012] Before the discharge operation begins in the compression chamber and during the front stage of the discharge, the rubber-coated nylon cloth is maintained in a pressure-relief state. When the discharge volume in the compression chamber reaches 20% to 30% of its volume, the inflatable base immediately starts the continuous pressurization mechanism, causing the rubber-coated nylon cloth to be continuously inflated, and after tensioning, it forms an outward convex arch structure and maintains it until the discharge process is completed. After the discharge is completed, the rubber-coated nylon cloth is depressurized through the inflatable base, so that the surface of the waste paper material accumulated in the compression chamber returns to a flat state, and is ready to enter the pressure head compression operation process.

[0013] As a further limitation, the compression chamber is provided with a sliding door or a flip door on one side as a side opening structure, and the side opening structure enables the compressed waste paper blocks to be easily and quickly removed from the compression chamber, thereby improving the working efficiency of the baler.

[0014] As a further limitation, the ram is synchronously driven at the top by at least two independent hydraulic cylinders.

[0015] As a further limitation, an auxiliary pressure head is provided at the bottom of the compression chamber, and the auxiliary pressure head is driven by an independent hydraulic cylinder; the auxiliary pressure head can be delayed to start while the pressure head is compressing, and the pressure head is responsible for applying the main pressure to the upper part of the waste paper block, while the auxiliary pressure head applies the auxiliary pressure to the lower part of the waste paper block. Through this upper and lower coordinated compression method, the internal uniformity of the waste paper block can be effectively improved;

[0016] The pressure surface of the auxiliary pressure head is designed to be a concave structure adapted to the pressure surface of the pressure head.

[0017] As a further limitation, the cross-sectional curve of the rubber-coated nylon cloth passing through the center point in the inflated state is: y=dot sin(ax+b), wherein y is the vertical displacement of the rubber-coated nylon cloth, a is a preset constant, and x is the length direction coordinate of the inflatable base.

[0018] As a further limitation, a disc-shaped blind groove matching the rubber-coated nylon cloth is formed in the middle of the inflatable base, so that the rubber-coated nylon cloth can be converged into the disc-shaped blind groove after the rubber-coated nylon cloth is depressurized.

[0019] As a further limitation, the inflatable base is provided with a plurality of concentrically arranged annular nozzles, which can evenly spray airflow toward the inner surface of the coated nylon cloth to ensure that the inflatable base can evenly support the waste paper material during the inflation process, thereby improving the uniformity of the waste paper material block.

[0020] As a further limitation, the pressure surface of the pressure head and the bottom surface of the compression chamber are formed with threading grooves arranged at intervals; the threading grooves on the pressure head and the compression chamber are arranged relative to each other, so that the device uses metal wire or plastic belt at the threading groove position to bundle and pack the compressed waste paper blocks after the waste paper is compressed;

[0021] A strapping and baling machine matching the threading slot is arranged at the bottom of the frame, so that the compressed waste paper blocks can be automatically strapped and baled at the threading slot position by the strapping and baling machine using plastic strapping tape as strapping material.

[0022] Beneficial effects: The waste paper baler for improving the uniformity of waste paper packaging of the present invention has a compact structure, occupies a small space, and has an economical equipment cost, and is particularly suitable for use in small and medium-sized garbage recycling stations. By introducing an optimized stacking uniformity compensation structure, the distribution of waste paper materials in the compression chamber is more balanced, which significantly improves the uniformity and compaction effect of packaging. This not only reduces the gaps inside the waste paper blocks, but also effectively avoids the phenomenon of loose packages. In addition, the baler is easy to operate, easy to realize automated settings, and has a low maintenance cost, which can effectively improve the efficiency of subsequent processing and utilization of waste paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention.

[0024] Among them: 1. Hydraulic cylinder; 2. Hydraulic cylinder assembly frame; 3. Frame; 4. Pressure head; 5. Compression chamber; 6. Flip door lock; 7. Glued nylon cloth; 8. Disc-shaped blind groove; 9. Ring nozzle; 10. Inflatable buffer chamber; 11. Inflatable base; 12. Stable base; 13. Air nozzle; 14. Outward hinge; 15. Flip door; 16. Pressure head pressure surface. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention and to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the technical scheme in the embodiments of the present invention is clearly and completely described below in conjunction with specific illustrations.

[0026] This embodiment is only a part of the embodiments of the present invention, but represents all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed.

[0028] See also Figure 1 A preferred embodiment of a waste paper baler for improving the uniformity of waste paper baling is provided. In this embodiment, the structure of the vertical waste paper baling device is as follows: Figure 1 As shown, it includes a frame 3, which is a frame support, and a plurality of support leg structures are arranged at the bottom as a stable base 12. A hydraulic cylinder assembly frame 2 is formed on the upper part of the frame 3, and two groups of hydraulic cylinders 1 are assembled on the hydraulic cylinder assembly frame 2. The lower part of the two groups of hydraulic cylinders 1 is equipped with a pressure head 4. Through the synchronous operation of the two groups of hydraulic cylinders 1, the pressure head 4 can apply uniform pressure to the waste paper blocks stacked in the compression chamber 5.

[0029] The two groups of hydraulic cylinders 1 are connected to an external hydraulic unit, and the external hydraulic unit is used as a power source to drive the hydraulic cylinders 1 to move up and down. The two groups of hydraulic cylinders 1 move up and down synchronously to drive the pressure head 4 connected to the lower part to move up and down. The hydraulic cylinders 1 are connected to the control unit through a hydraulic system. The control unit performs precise motion control of the hydraulic cylinders 1 according to the preset program instructions to ensure that the pressure head 4 performs uniform compression operation on the waste paper block in the compression chamber 5.

[0030] The lower surface of the pressure head 4 is a pressure head pressure surface 16, and the pressure head pressure surface 16 can be designed according to actual needs to adapt to waste paper blocks of different thicknesses and densities. For example, multiple protrusions or grooves can be evenly designed on the pressure head pressure surface 16 to increase the contact area with the waste paper block, thereby improving the compression effect. In addition, the edge of the pressure head pressure surface 16 can also be designed to be a smooth transition to avoid damage to the waste paper block during the compression process.

[0031] In another embodiment, an auxiliary pressure head is provided at the bottom of the compression chamber 5. The auxiliary pressure head is driven by an independent hydraulic cylinder and works in conjunction with the pressure head 4 to apply auxiliary pressure to the waste paper block, thereby further improving the internal uniformity of the waste paper block. The pressure surface of the auxiliary pressure head is designed to be a concave structure that is compatible with the pressure surface of the pressure head 4, ensuring the uniformity of pressure distribution; the auxiliary pressure head is driven by an independent hydraulic cylinder and can be delayed while the pressure head 4 is compressing, so as to achieve auxiliary compression of the lower part of the waste paper block. This design not only improves the uniform compression effect of the waste paper block, but also reduces the gaps inside the waste paper block through an optimized compression process, thereby effectively avoiding the occurrence of loose packages.

[0032] In this embodiment, the lower part of the frame 3 is a compression chamber 5, which is a square compression chamber. The two sides of the compression chamber 5 are side panels fixedly connected to the frame 3. The side panels are used to limit the compression chamber 5 on both sides. The compression chamber 5 is provided with a front baffle and a rear baffle on the front and back sides respectively. The rear baffle is a fixed structure, similar to the side panels, and is used to perform fiber on the rear side of the compression chamber 5. The front baffle is a flip door 15 structure, which can be opened and closed by an outward hinge 14 while limiting the front of the compression chamber 5. The closed flip door 15 can be fastened and fixed by a flip door lock 6 provided on the opposite side of the corresponding outward hinge 14. In other embodiments, the flip door 15 can also be opened or closed by sliding left and right or up and down. The purpose is to form a closed cavity with an open top surface at the bottom of the compression chamber 5, so that the waste paper put into the compression chamber 5 can be compressed when the compression head 15 is pressed down.

[0033] The bottom of the compression chamber 5 is also provided with a stacking uniformity compensation structure, which includes an inflatable base 11 embedded in the bottom frame 3 of the compression chamber 5, and an air nozzle 13 is provided on one side of the inflatable base 11. The air nozzle 13 is used to connect to an external air compressor, and the air flow of the air nozzle 13 can be controlled by the air compressor power, thereby adjusting the inflation volume and inflation speed of the inflatable base 11. The top of the inflatable base 11 is covered with a rubber-coated nylon cloth 7, which is a preformed structure and has a certain elasticity. By covering the inflatable base 11, it can maintain an outwardly convex arched structure when the inflatable base 11 is inflated and pressure-maintained, and the arched vertex of the arched structure corresponds to the central position of the cross section of the compression chamber 5. In order to improve the uniformity of air distribution on the inner surface of the coated nylon cloth 7 by the inflatable base 11, a disc-shaped inflatable buffer chamber 10 is formed on the inflatable base 11, and three groups of annular nozzles 9 are concentrically arranged in an annular arrangement on the upper surface of the inflatable buffer chamber 10.

[0034] The coated nylon cloth 7 of this embodiment is mainly used to evenly distribute the waste paper materials put into the compression chamber 5 when the compression chamber 5 is discharged, so that there will be no stacking in the compression chamber 5, and it is closer to a block structure matching the volume of the compression chamber 5. Specifically:

[0035] Before the discharge operation starts in the compression chamber 5 and at the beginning of the discharge process, the rubber-coated nylon cloth 7 maintains a depressurized state, and the rubber-coated nylon cloth 7 is almost flat. In this state, the feeding operation continues in the compression chamber 5. When the feeding amount reaches 20% to 30% of the volume of the compression chamber 5, the inflatable base 11 immediately starts the continuous pressurization mechanism and continuously blows the inner side of the rubber-coated nylon cloth 7 through the annular nozzle 9. This process enables the rubber-coated nylon cloth 7 to simulate manual shaking of the material placed on its surface. During the shaking process, the convex middle part of the rubber-coated nylon cloth 7 can shake the material in the middle position to the outer edge, achieving one-time material uniformity.

[0036] After the air pressure in the inner sac cavity of the rubber-coated nylon cloth 7 reaches a stable state, the continuous inflation of the inflatable base 11 brings the rubber-coated nylon cloth 7 into the pressure-maintaining stage. In this stage, the rubber-coated nylon cloth 7 forms a stable convex arch structure and maintains this shape until the end of the discharge process. During this period, the annular nozzle 9 can evenly spray airflow to the inner surface of the rubber-coated nylon cloth to ensure that the inflatable base can evenly support the waste paper material during the inflation process, thereby improving the uniformity of the waste paper block. However, in the subsequent material input process, arched stacking may occur. In this case, after the discharge is completed, the rubber-coated nylon cloth 7 is depressurized through the inflatable base 10, so that the arched part in the middle of the waste paper material accumulated in the compression chamber is restored to a flat surface as the rubber-coated nylon cloth 7 is depressurized, thereby achieving secondary material equalization and preparing for the compression operation process entering the pressure head 4.

[0037] Through this optimized design, the arched structure of the rubberized nylon cloth 7 can more effectively push the material from the middle position to the edge, thereby reducing the unevenness of the material during the compression process. In addition, this specific curve shape of the rubberized nylon cloth 7 can also reduce the slippage of the material during the compression process, further improving the compression uniformity of the waste paper block. In practical applications, this optimized rubberized nylon cloth 7 can significantly improve the packaging efficiency and packaging quality of the waste paper baler, providing a more efficient and reliable packaging solution for the waste paper recycling industry.

[0038] In order to ensure that the rubber-coated nylon cloth 7 is as flat as possible under the decompression state, the present embodiment designs a disc-shaped blind groove 8 in the center of the top surface of the inflatable base 11 to fit the rubber-coated nylon cloth 7. In this way, after the rubber-coated nylon cloth 7 is decompressed, it can naturally shrink into the disc-shaped blind groove 8 under the action of negative pressure.

[0039] In another embodiment, in order to further optimize the aforementioned two material balancing effects of the rubber-coated nylon cloth 7, the corresponding structural form of the rubber-coated nylon cloth 7 can be optimized twice. In this optimized state, the cross-sectional curve of the rubber-coated nylon cloth 7 passing through the center point in the inflated state is: y=dot sin(ax+b), wherein y is the vertical displacement of the rubber-coated nylon cloth, a is a preset constant, and x is the length direction coordinate of the inflatable base. This form of the rubber-coated nylon cloth 7 can better adapt to waste paper blocks of different thicknesses and densities, ensuring the uniform distribution of the waste paper blocks during the compression process.

[0040] In order to improve the physical strength and performance of the rubber-coated nylon cloth 7, the inner surface or outer surface of the rubber-coated nylon cloth 7 may be compounded with other high-strength composite materials.

[0041] During the compression process of the device of this embodiment, since the waste paper material in the compression chamber 5 is subjected to two times of material uniformity by the coated nylon cloth 7, the waste paper material in the compression chamber 5 is closer to the block structure of the compression chamber 5. Therefore, when the compression head 4 applies pressure, the internal structure of the waste paper block is relatively uniform, which helps to reduce the stress concentration inside the waste paper block during compression, thereby further ensuring the uniformity of compression and reducing the cracks and damage that may occur in the waste paper block during the compression process.

[0042] During the operation of the pressure head 4 compressing the material, in order to further improve the compression uniformity and compression effect under the condition of small tonnage pressure, a plurality of sensors are arranged on the inner wall of the compression chamber 5. These sensors can monitor the thickness and density distribution of the waste paper block in real time, and provide data support for the control unit to achieve more accurate compression control. At the same time, a plurality of pressure relief vents are also arranged at the bottom of the compression chamber 5. These vents can discharge the air inside the waste paper block during the compression process, reduce the formation of bubbles during compression, and thus improve the compression quality. In addition, during the compression process, the stacking uniformity compensation structure can also dynamically adjust the inner air pressure of the coated nylon cloth 7 according to the actual situation of the waste paper stacking, so as to achieve uniform distribution of the waste paper material in the compression chamber, thereby improving the internal uniformity of the waste paper block.

[0043] In order to better carry out the packaging operation, in another embodiment, threading grooves arranged at intervals can be formed on the pressure surface 16 of the pressure head and the bottom surface of the compression chamber 5; the threading grooves on the pressure surface 16 of the pressure head and the bottom surface of the compression chamber 5 are arranged relatively to each other; and a strapping and baling machine matching the above-mentioned threading grooves is embedded at the bottom of the frame 3 corresponding to the lower position of the compression chamber 5. When the above-mentioned compression process is completed, the compression head 15 retracts to the starting position, and the operator unlocks the flip door lock 6 and opens the flip door 15 through the outward hinge 14. The strapping and baling machine automatically straps and packs the compressed waste paper blocks at the threading groove position through plastic strapping tape for the strapping materials.

[0044] In another embodiment, if a strapping and baling machine is not provided, the compressed waste paper blocks can also be manually strapped and baled at the threading slot 7 by means of metal wire or plastic tape to obtain similarly packaged waste paper blocks.

[0045] In another embodiment, the device further includes a control unit for controlling the lifting and lowering movement of the pressure head and the inflation process of the inflation base. The control unit monitors the pile height and density distribution of the waste paper in real time through sensors, and automatically adjusts the pressure strategy of the pressure head and the inflation volume of the inflation base to ensure the uniformity and efficiency of the waste paper packaging process.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A waste paper baler for improving the uniformity of waste paper packaging, characterized in that: It includes a frame and a compression chamber arranged at the lower part of the frame; The compression chamber is a square compression chamber, the top surface of the compression chamber is an open surface, and the frame is provided with a pressure head at a position facing the open surface of the compression chamber. The pressure head is driven by a hydraulic cylinder to achieve lifting and lowering, and the pressure head has a pressure surface that matches the open surface of the compression chamber; The bottom of the compression chamber is formed with a stacking uniformity compensation structure, which includes an inflatable base, an air nozzle is provided on the outside of the inflatable base, and an external air supply device can be connected to the air nozzle; the surface of the inflatable base is covered with elastic rubberized nylon cloth; the rubberized nylon cloth is a pre-formed structure that can maintain an outwardly convex arched structure when the inflatable base is inflated and pressure is maintained, and the center position of the compression chamber corresponds to the arch apex; When the stacking uniformity compensation structure performs the discharge process in the compression chamber, it simultaneously performs the inflation and uniformity compensation operations. The specific operation steps are as follows: Before the discharge operation begins in the compression chamber and during the front part of the discharge process, the rubber-coated nylon cloth is maintained in a pressure-relief state. When the discharge volume in the compression chamber reaches 20% to 30% of its volume, the inflatable base immediately starts the continuous pressurization mechanism, causing the rubber-coated nylon cloth to be continuously inflated, and after tensioning, it forms an outward convex arch structure and maintains it until the discharge process is completed; after the discharge is completed, the rubber-coated nylon cloth is depressurized through the inflatable base, so that the surface of the waste paper material accumulated in the compression chamber returns to a flat state and is ready to enter the pressure head compression operation process.

2. The waste paper baler for improving waste paper baling uniformity according to claim 1, characterized in that: The compression chamber is provided with a sliding door or a flip door on one side as a side opening structure, and the side opening structure enables the compressed waste paper material block to be conveniently and quickly removed from the compression chamber.

3. The waste paper baler for improving waste paper baling uniformity according to claim 1, characterized in that: The pressure head is synchronously driven by at least two independent hydraulic cylinders at the top.

4. The waste paper baler for improving waste paper baling uniformity according to claim 1, characterized in that: An auxiliary pressure head is provided at the bottom of the compression chamber and is driven by an independent hydraulic cylinder. The auxiliary pressure head can be delayed in starting while the pressure head is compressing. The pressure head is responsible for applying the main pressure to the upper part of the waste paper block, while the auxiliary pressure head applies auxiliary pressure to the lower part of the waste paper block.

5. The waste paper baler for improving waste paper baling uniformity according to claim 4, characterized in that: The pressure surface of the auxiliary pressure head is designed to be a concave structure adapted to the pressure surface of the pressure head.

6. The waste paper baler for improving waste paper baling uniformity according to claim 1, characterized in that: The cross-sectional curve of the rubber-coated nylon cloth passing through the center point in the inflated state is: y=dot sin(ax+b), wherein y is the vertical displacement of the rubber-coated nylon cloth, a is a preset constant, and x is the longitudinal coordinate of the inflatable base.

7. The waste paper baler for improving waste paper baling uniformity according to claim 1, characterized in that: A dish-shaped blind groove matching the rubber-coated nylon cloth is formed in the middle of the inflatable base, so that the rubber-coated nylon cloth can be retracted into the dish-shaped blind groove after the pressure of the rubber-coated nylon cloth is released.

8. The waste paper baler for improving waste paper baling uniformity according to claim 1, characterized in that: The inflatable base is provided with a plurality of concentrically arranged annular nozzles, and the annular nozzles can evenly spray airflow toward the inner surface of the rubberized nylon cloth.

9. The waste paper baler for improving waste paper baling uniformity according to claim 1, characterized in that: The pressure surface of the pressure head and the bottom surface of the compression chamber are formed with spaced-apart wire grooves; the wire grooves on the pressure head and the compression chamber are arranged relative to each other, so that after the waste paper is compressed, the equipment can use metal wire or plastic belt at the position of the wire groove to bundle and pack the compressed waste paper blocks.

10. The waste paper baler for improving waste paper baling uniformity according to claim 9, characterized in that: A strapping and baling machine matching the wire threading slot is provided at the bottom of the frame, so that the compressed waste paper blocks can be automatically strapped and baled at the wire threading slot using the strapping and baling machine with plastic strapping tape as the strapping material.

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