Automatic compression and packing equipment for waste paper

Abstract

This invention belongs to the field of automatic paper baling technology and discloses an automatic compression and baling device for waste paper. It includes a compression baler and weighing conveyor belts located on both sides of its feed inlet. One of the weighing conveyor belts is equipped with a tearing machine. A turntable is located in the center of the compression seat of the compression baler. The turntable has several circumferentially arranged insertion holes, into which rigid rollers are inserted. These rollers are inserted into the compressed waste paper bales as the compression seat compresses. One end of each rigid roller extends out of the compressed waste paper bale, and several ends of the rigid rollers are fitted with restraining straps for tightening. This invention feeds the paper into the compression baler via two separate feeding lines, feeding hard paper and soft paper in a weight ratio of approximately 3:7-4:6. By controlling the ratio of hard paper to soft paper, the baling density of the paper bales is increased, enhancing the strength and reliability of the bales shape, improving baling efficiency, and reducing damage during transportation.

Description

Technical Field

[0001] This invention belongs to the field of automatic paper packaging technology, specifically an automatic compression and packaging device for waste paper. Background Technology

[0002] Waste paper compression baling is used to compress paper bales before recycling and transportation, reducing their footprint and allowing for the transport of more bales within the same space, thus lowering transportation costs. Currently used waste paper compression baling lines employ multi-purpose compressors. These typically lack the ability to control the proportion of paper in the bales and are difficult to expand upon. The waste paper typically compressed includes cardboard, such as corrugated boxes, or ordinary toilet paper, printer paper, or ordinary book paper. Based on past experience with paper bale compression and transportation, we have found that when the proportion of cardboard in the bales is relatively high, even after compression of at least 180 tons, a high porosity can still occur, causing the bales to spring back or become loose. This can lead to defects such as loose bales or broken threads during transportation. The high breakage rate reduces transportation efficiency. Furthermore, severe loosening during transportation can even affect traffic and pose safety hazards.

[0003] Based on this, this application proposes an automatic compression and baling device for waste paper to overcome the above-mentioned defects. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides an automatic compression and baling device for waste paper.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic compression and baling device for waste paper, comprising a compression baler and weighing conveyor belts disposed on both sides of its feed inlet, wherein a tearing machine is disposed on one of the weighing conveyor belts, a turntable is disposed in the middle of the compression seat of the compression baler, the turntable is disposed with a plurality of circumferentially arranged insertion holes, and rigid rollers are inserted into the insertion holes and are inserted into the compressed waste paper bales as the compression seat compresses, one end of the rigid rollers extends out of the compressed waste paper bales, and the ends of the plurality of rigid rollers are fitted with restraining straps for tightening;

[0006] The extrusion seat is also equipped with a component for driving the turntable to rotate the rigid roller during the feeding process in the compression chamber;

[0007] The compression seat is also equipped with a second component for compressing waste paper.

[0008] Preferably, the weighing conveyor belts on both sides of the compression baler are used for feeding cardboard and thin paper, respectively, and the tearing machine is set on a weighing conveyor belt for feeding thin paper. The tearing machine is used to tear cardboard shells and cardboard balls.

[0009] Preferably, the shredder includes a mixing chamber, on which a dome is fixedly installed, and the mixing chamber also has an inlet and a barrier covering its outer side;

[0010] The mixing box is provided with a support, and a platform is installed on the support via a lifting mechanism. The platform is driven to move vertically up and down by the lifting mechanism. A truncated cone cap that can rotate on its inner side is slidably installed on the inner side of the platform. A paper-tearing mechanism is provided between the truncated cone cap and the mixing box. The paper-tearing mechanism includes a unit one fixed on the truncated cone cap and a unit two fixed on the mixing box. The teeth of the unit one and the unit two are opposite to each other.

[0011] The platform is also equipped with a second drive mechanism, which is used to drive the toothed ring fixed on the truncated cone cap to rotate.

[0012] Preferably, both Unit 1 and Unit 2 are configured as three-step structures, with each step of Unit 1 and Unit 2 vertically aligned and having the same width.

[0013] Preferably, the platform is provided with a slide rail, and the bottom of the outer edge of the truncated cone cap is provided with a slider, which is slidably mounted on the slide rail to support the rotation of the truncated cone cap on the platform.

[0014] Preferably, the mixing box includes a drive mechanism disposed outside it and a dispersing plate inside it. The drive shaft of the dispersing plate extends to the outside of the drive mechanism and is driven to the output end of the drive mechanism to drive the dispersing plate to tumble and further disperse the still connected cardboard and paper balls inside the mixing box.

[0015] Preferably, the bottom of the mixing box is provided with a discharge cylinder, the inside of the discharge cylinder is provided with a material blocking grid, the baffle shaft of the material blocking grid extends to the outer end of the discharge cylinder and is equipped with a drive switch for opening the material blocking grid to discharge material onto the weighing conveyor belt.

[0016] Preferably, each of the four corners of the bracket is provided with a spring rod for elastically supporting the platform upwards and for aligning vertically as a guide.

[0017] Preferably, the top of the dome is an arc-shaped dome.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This invention utilizes a two-line feeding system, delivering cardboard and soft paper in a weight ratio of approximately 3:7-4:6 to the compression baler. By controlling the ratio of cardboard to soft paper, the baling density is increased, enhancing the sturdiness and reliability of the bales, improving baling efficiency, and reducing damage during transportation.

[0020] The paper shredder separates the hard and soft paper, breaking up the hard paper structure to compensate for potential deficiencies in the soft paper. It also prevents the soft paper from clumping together, which would reduce its fiber bonding efficiency. Through the relative rotation between unit one and unit two, the waste paper is compressed between them, tearing it and altering its structure, thus improving fiber utilization. It is then fed onto a weighing conveyor belt for transport. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the compression packaging production line of the present invention;

[0022] Figure 2 This is a diagram of the internal structure of the compressor of the present invention;

[0023] Figure 3 This is a schematic diagram of the extrusion seat structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the packaging block of the present invention;

[0025] Figure 5 This is a front view of the packaging block of the present invention;

[0026] Figure 6 This is a schematic diagram of the tearing machine of the present invention;

[0027] Figure 7 This is a front view of the tearing machine of the present invention;

[0028] Figure 8 This is a side view of the tearing machine of the present invention;

[0029] Figure 9 This is a top view of the tearing machine of the present invention;

[0030] Figure 10 This is a bottom view of the present invention;

[0031] Figure 11 This is a partial structural cross-sectional view of the tearing machine of the present invention;

[0032] Figure 12 For the present invention Figure 11 Enlarged schematic diagram of part A;

[0033] Figure 13 This is a schematic diagram of the structure of unit two of the present invention.

[0034] In the diagram: 100, Compression baler; 101, Extrusion seat; 1011, Turntable; 1012, Insertion hole; 1013, Rigid roller; 1014, Restraint belt; 102, Component 1; 103, Component 2; 200, Weighing conveyor belt; 300, Shredder; 301, Mixing box; 3011, Drive mechanism 1; 3012, Dispersion plate; 3013, Inlet; 302, Discharge cylinder; 3021, Material blocking grid; 3022, Drive switch; 303, Support; 3031, Lifting mechanism; 3032, Spring rod; 304, Platform; 305, Round truncated cone cap; 3051, Slide rail; 3052, Slider; 306, Dome; 307, Gear ring; 308, Drive mechanism 2; 309, Paper tearing mechanism; 3091, Unit 1; 3092, Unit 2. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 5 As shown, the present invention provides an automatic compression and baling device for waste paper, including a compression baler 100 and weighing conveyor belts 200 arranged on both sides of its feed inlet. A tearing machine 300 is arranged on one of the weighing conveyor belts 200. A turntable 1011 is arranged in the middle of the compression seat 101 of the compression baler 100. A plurality of circumferentially arranged insertion holes 1012 are arranged on the turntable 1011. A rigid roller 1013 is inserted into the insertion hole 1012 and is inserted into the compressed waste paper bale as the compression seat 101 compresses. One end of the rigid roller 1013 extends out of the compressed waste paper bale, and the ends of the plurality of rigid rollers 1013 are fitted with restraining straps 1014 for tightening.

[0037] The extrusion seat 101 is also provided with a component 102 for driving the turntable 1011 to drive the rigid roller 1013 to rotate during the feeding process in the compression chamber;

[0038] The compression seat 101 is also equipped with a component 2 103 for compressing waste paper.

[0039] The compression baling equipment of this application is equipped with two weighing conveyor belts 200. Instead of mixing waste paper onto a single weighing conveyor belt 200, the waste paper is fed onto the compression baler 100 along two separate lines, with cardboard and soft paper fed into the baler 100 in a weight ratio of approximately 3:7-4:6. The cardboard maintains the overall block structure of the compressed waste paper, while the soft paper fills the gaps between the cardboard pieces to prevent large cavities, thereby increasing the density of the compressed waste paper blocks. After multiple compression tests, it was found that when the weight percentage of cardboard exceeded 50%, although the overall frame strength of the compressed block increased, the relatively high proportion of cardboard led to increased void ratio. At this point, the low proportion of soft paper resulted in insufficient filling of voids, reducing the overall density and the weight of the paper bale per compression. Consequently, the baling efficiency decreased despite the increased resilience of the paper bale. This is because the fibrous structure of hard paper, such as corrugated cardboard, is prone to springback under high pressure, while soft paper can suppress deformation through adhesive wrapping. When the proportion of hard paper is high, its springback ability exceeds the restraining ability of soft paper, leading to increased porosity, causing the bale to loosen or the edges to crack. Compression using a mixture of hard and soft paper in the aforementioned ratio can increase density by approximately 15%-20% compared to traditional paper bales. Furthermore, the soft paper fibers can reduce the breakage rate during transportation because they can absorb more vibration energy, reducing the damage to the bale from transport impacts.

[0040] The compressor's internal plate was modified by inserting wooden sticks evenly. The materials used, depending on site conditions, can include cardboard tubes. These sticks are used to rotate and mix the cardboard and soft paper, ensuring a relatively uniform distribution. The cardboard tubes also have an internal lining to further enhance structural stability. The restraint straps can be replaced with adhesive tape. Alternatively, this design can be omitted, and simply mixing the cardboard and soft paper in the correct ratio is sufficient.

[0041] The two weighing conveyor belts 200 mentioned above can be combined into one, and after adjusting the ratio, they can be placed on one weighing conveyor belt 200.

[0042] like Figure 1 As shown, the weighing conveyor belts 200 on both sides of the compression baler 100 are used for feeding cardboard and thin paper, respectively. The tearing machine 300 is set on one of the weighing conveyor belts 200 for feeding thin paper and is used to tear cardboard shells and cardboard balls.

[0043] This baling equipment feeds cardboard and thin paper into the compression baler separately, in a specific ratio. The thin paper includes the thinner sheets from the original waste paper and a softer, smaller mixture of shredded cardboard and paper wads. The cardboard and paper wads are torn apart by a shredder 300 and then fed onto a weighing conveyor belt 200 into the compression baler 100. This mixing process makes the compressed bales more compact.

[0044] like Figures 6-11 As shown, the shredder 300 includes a mixing box 301, a dome 306 fixedly installed on the mixing box 301, and an inlet 3013 and a enclosure covering its outside.

[0045] A support 303 is provided on the mixing box 301. A platform 304 is installed on the support 303 via a lifting mechanism 3031. The platform 304 is driven to move vertically up and down by the lifting mechanism 3031. A truncated cone cap 305 that can rotate on its inner side is slidably installed on the inner side of the platform 304. A paper-pulling mechanism 309 is provided between the truncated cone cap 305 and the mixing box 301. The paper-pulling mechanism 309 includes a unit 1 3091 fixed on the truncated cone cap 305 and a unit 2 3092 fixed on the mixing box 301. The teeth of the unit 1 3091 and the unit 2 3092 are opposite to each other.

[0046] The platform 304 is also equipped with a second drive mechanism 308, which is used to drive the gear ring 307 fixed on the truncated cone cap 305 to rotate.

[0047] The lifting mechanism 3031 installed on the platform can lift the platform 304 upwards, thereby pulling the truncated cone cap 305 and unit 3091 therein upwards. The lifting mechanism 3031 is driven by a parallelogram linkage mechanism and a cylinder to lift the relevant components mounted on the platform 304 upwards. Paper is fed inwards from the top of the truncated cone cap 305, and then distributed to the surrounding areas through the dome 306. The paper falls between unit 3091 and unit 3092 through the space between the truncated cone cap 305 and the dome 306. The drive mechanism 308 drives the gear ring 307 to rotate the truncated cone cap 305 and unit 3091, and unit 3091 and unit 3092 compress and tear the paper. Furthermore, the lifting mechanism 3031 drives the platform 304, the round cap 305, and unit one 3091 to move up and down reciprocally. This causes the distance between unit one 3091 and unit two 3092 to change in real time, compressing and tearing the paper material or loosening the torn paper material for passage. The paper material flows outwards to the enclosure. Figure 11 and 12 The part not shown is blocked and then enters the mixing chamber 301 through the inlet 3013.

[0048] like Figure 11 and Figure 12 As shown, both Unit 1 3091 and Unit 2 3092 are set in a three-step shape, and each step of Unit 1 3091 and Unit 2 3092 is vertically aligned and has the same width.

[0049] Unit 1 (3091) and Unit 2 (3092) are both three-tiered steps. Paper material falls onto these steps and is pressed downwards by Unit 1 (3091), simultaneously pressing the paper material onto the steps. The downward movement of Unit 1 (3091) and the opposing movement of Unit 2 (3092) further compress the paper material, and their relative rotation tears the paper. The teeth on Units 1 (3091) and 2 (3092) are reverse-toothed. The three-tiered design allows for the covering of relatively large pieces of paper for tearing and disassembly, improving efficiency. Furthermore, the layered arrangement of the three tiers allows cardboard or wads of paper to be placed between adjacent tiers, expanding the disassembly area.

[0050] like Figure 7 As shown, a slide rail 3051 is provided on the platform 304, and a slider 3052 is provided at the bottom of the outer edge of the truncated cone cap 305. The slider 3052 is slidably mounted on the slide rail 3051 to support the truncated cone cap 305 to rotate on the platform 304.

[0051] The slide rail 3051 and slider 3052 provide movable support for the truncated cone cap 305 on the platform 304, allowing the truncated cone cap 305 to slide and rotate along a circular trajectory on the slide rail 3051 via the slider 3052.

[0052] like Figure 11 As shown, the mixing box 301 includes a drive mechanism 3011 disposed on the outside and a dispersing plate 3012 disposed inside. The drive shaft of the dispersing plate 3012 extends to the outside of the drive mechanism 3011 and is driven to connect to the output end of the drive mechanism 3011, so as to drive the dispersing plate 3012 to tumble and further disperse the still connected cardboard and paper balls inside the mixing box 301.

[0053] The dispersing plate 3012 is rotatably disposed inside the mixing box 301, and its main shaft extends to the outside of the mixing box 301. The output shaft of the drive mechanism 3011 located above it is driven downward to the main shaft of the dispersing plate 3012. The dispersing plate 3012 is driven to rotate by the drive mechanism 3011, thereby stirring inside the mixing box 301, breaking up the still connected cardboard and paper balls, making them looser and relatively uniform.

[0054] like Figure 7 , Figure 10 and Figure 11 As shown, a discharge cylinder 302 is provided at the bottom of the mixing box 301. A material blocking grid 3021 is provided inside the discharge cylinder 302. The baffle shaft of the material blocking grid 3021 extends to the outer end of the discharge cylinder 302 and is equipped with a drive switch 3022 for opening the material blocking grid to discharge material onto the weighing conveyor belt 200.

[0055] The drive switch 3022 consists of rotatable baffles, each with a shaft extending from the mixing tank 301 to the outside. A small cantilever is fixedly inserted into each shaft, driving the baffle to rotate. When the cantilever is vertical, the baffle is horizontal, and the connection between the two sides of each baffle blocks the discharge cylinder 302. A sliding plate is provided on the cantilever, with a perforation for the cantilever to pass through. When the sliding plate moves horizontally, it tilts the cantilever until it opens, allowing the paper material to fall onto the weighing conveyor belt 200.

[0056] like Figures 6-8 As shown, each of the four corners of the bracket 303 is provided with a spring rod 3032 for elastically supporting the platform 304 upwards and for aligning the vertical guide.

[0057] Spring rods 3032 are supported at the four corners of platform 304. The spring rods 3032 provide upward support to platform 304 from below and guide its vertical movement, preventing translational deviation. The springs on the spring rods 3032 provide upward elastic force, reducing the load on platform 304 when it moves upward, thus assisting the lifting mechanism 3031 in bearing the weight of components on platform 304. Furthermore, they act as a buffer during platform 304 descent, preventing the lifting mechanism 3031 from disengaging due to excessive load.

[0058] like Figure 11 As shown, the top of dome 306 is a dome.

[0059] The dome 306 features a rounded top to evenly distribute the paper material to all areas around the outer periphery of the paper-pulling mechanism 309 during inward feeding, preventing accumulation in any single location. The surface of the dome 306 is smooth and free of pits, bumps, or other obstacles, preventing any obstruction to the sliding material.

[0060] Working principle and usage process of this invention:

[0061] Cardboard and soft paper are transported separately on two weighing conveyor belts 200 to the compression baler 100, where they are compressed and baled according to a weight ratio between 3:7 and 4:6. Alternatively, waste paper with a pre-distributed ratio can be uniformly fed to the compression baler 100 via the weighing conveyor belt 200 for compression and baling.

[0062] The platform 304 is lifted upwards via a lifting mechanism 3031, which in turn lifts the truncated cone cap 305 and its unit 3091 upwards. The lifting mechanism 3031, driven by a parallelogram linkage and a cylinder, lifts the relevant components mounted on the platform 304. Paper is fed inwards from the top of the truncated cone cap 305, then distributed outwards via the dome 306. The paper falls between the truncated cone cap 305 and the dome 306, landing between unit 3091 and unit 3092. The drive mechanism 308 drives the gear ring 307 to rotate the truncated cone cap 305 and unit 3091, causing unit 3091 and unit 3092 to compress and tear the paper. Furthermore, the lifting mechanism 3031 drives the platform 304, the round cap 305, and the unit 1 3091 to move up and down repeatedly, so the distance between the unit 1 3091 and the unit 2 3092 changes in real time, which can compress and tear the paper material or loosen the torn paper material for passage.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic compression and baling device for waste paper, comprising a compression baler (100) and weighing conveyor belts (200) disposed on both sides of its feed inlet, wherein a shredder (300) is disposed on one of the weighing conveyor belts (200), characterized in that: The compression baler (100) has a turntable (1011) in the middle of the compression seat (101). The turntable (1011) has several circumferentially arranged insertion holes (1012). A rigid rod (1013) is inserted into the insertion hole (1012) and is inserted into the compressed waste paper bale as the compression seat (101) compresses. One end of the rigid rod (1013) extends out of the compressed waste paper bale, and the ends of several rigid rods (1013) are fitted with restraint straps (1014) for tightening. The extrusion seat (101) is also provided with a component (102) for driving the turntable (1011) to drive the rigid roller (1013) to rotate during the feeding process in the compression chamber; The compression seat (101) is also provided with a second component (103) for compressing waste paper. The weighing conveyor belts (200) on both sides of the compression baler (100) are used to feed cardboard and soft paper respectively. The cardboard and soft paper are fed into the compression baler in a weight ratio of 3:7-4:

6. The tearing machine (300) is set on a weighing conveyor belt (200) for feeding thin paper. The tearing machine (300) is used to tear cardboard shells and cardboard balls. The tearing machine (300) includes a mixing box (301), on which a dome (306) is fixedly installed. The mixing box (301) is also provided with an inlet (3013) and a barrier covering its outside. A support (303) is provided on the mixing box (301). A platform (304) is installed on the support (303) via a lifting mechanism (3031). The platform (304) is driven to move vertically up and down by the lifting mechanism (3031). A truncated cone cap (305) that can rotate on its inner side is slidably installed on the inner side of the platform (304). A paper-tearing mechanism (309) is provided between the truncated cone cap (305) and the mixing box (301). The paper-tearing mechanism (309) includes a unit one (3091) fixed on the truncated cone cap (305) and a unit two (3092) fixed on the mixing box (301). The teeth of the unit one (3091) and the unit two (3092) are opposite to each other. The platform (304) is also provided with a second driving mechanism (308), which is used to drive the toothed ring (307) fixed on the truncated cone cap (305) to rotate; Unit 1 (3091) and Unit 2 (3092) are both set in a three-step shape, and each step of Unit 1 (3091) and Unit 2 (3092) is vertically aligned and has the same width.

2. The automatic compression and baling equipment for waste paper according to claim 1, characterized in that: The platform (304) is provided with a slide rail (3051), and the bottom of the outer edge of the truncated cone cap (305) is provided with a slider (3052). The slider (3052) is slidably installed on the slide rail (3051) to support the truncated cone cap (305) to rotate on the platform (304).

3. The automatic compression and baling equipment for waste paper according to claim 2, characterized in that: The mixing box (301) includes a drive mechanism (3011) disposed on its exterior and a dispersing plate (3012) disposed inside it. The drive shaft of the dispersing plate (3012) extends to the exterior of the drive mechanism (3011) and is driven to connect with the output end of the drive mechanism (3011) to drive the dispersing plate (3012) to tumble and further disperse the still connected cardboard and paper balls inside the mixing box (301).

4. The automatic compression and baling equipment for waste paper according to claim 3, characterized in that: The bottom of the mixing box (301) is provided with a discharge cylinder (302), and the discharge cylinder (302) is provided with a material blocking grid (3021). The baffle shaft of the material blocking grid (3021) extends to the outer end of the discharge cylinder (302) and is equipped with a drive switch (3022) for opening the material blocking grid to discharge material onto the weighing conveyor belt (200).

5. An automatic compression and baling device for waste paper according to claim 1, characterized in that: Each of the four corners of the bracket (303) is provided with a spring rod (3032) for elastically supporting the platform (304) upwards and aligning the vertical guide.

6. The automatic compression and baling equipment for waste paper according to claim 1, characterized in that: The top of the dome (306) is an arc-shaped dome.

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