A baling press for baling scrap metal cans

Abstract

The application provides a packing machine for packing waste metal cans, which comprises a frame and a compression cylinder, wherein an openable compression cavity is arranged in the compression cylinder, and a compression head is arranged opposite to the compression cavity; at least two annular rotating seats are formed in the compression cavity, and a plurality of extrusion tooth blocks are formed on the inner annular surface of the rotating seats; a disc-shaped rotating seat is formed on the bottom surface of the cavity, and an annular protrusion is formed on the disc-shaped rotating seat, and a wavy secondary protrusion is formed on the top surface of the annular protrusion; the annular rotating seats and the disc-shaped rotating seat rotate synchronously; the rotating directions of two adjacent annular rotating seats at the upper and lower positions in the plurality of annular rotating seats are opposite; and the rotating direction of the disc-shaped rotating seat and the annular rotating seat at the lowermost position is opposite. The application can compress waste materials, press the irregular waste materials into cylindrical compression blocks, greatly reduce the volume of the waste materials, facilitate waste material treatment, and greatly reduce the waste material treatment cost.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery technology, specifically to a baling machine for packing waste metal cans. Background Technology

[0002] Metal cans, including aluminum cans, generate a large amount of waste during production, processing, and normal use. Randomly piling up these metal sheets takes up a lot of space and is inconvenient for centralized processing and transportation. Therefore, the secondary recycling of these waste metal cans after cleaning and sorting is of great significance in terms of resource conservation, shortening production cycles, and environmental protection.

[0003] In the recycling process of the aforementioned metal can waste, due to the lack of compression, this type of metal can waste has the disadvantages of large unit volume and light weight, which leads to a large space occupation when stacked, and is not conducive to cleaning the material area. It also results in problems such as small weight per loading and short loading cycle, leading to excessively high economic costs. Therefore, compressing and packaging this type of metal can waste is an important step in the recycling of this type of metal can waste, which has positive significance for the storage, transportation, packaging material consumption and centralized treatment of metal can waste.

[0004] Existing baling machines for compressing and baling metal can waste are mostly hydraulic devices with similar structures. They typically involve placing materials in a square-shaped cavity with open sides or top. Pressure is applied through an extrusion head on the open surface to compress the metal can waste into compacted material. This compression method is effective at high compression tonnages, but the compressed size is large and non-adjustable. Therefore, these high-tonnage hydraulic baling machines are mostly used in large-scale professional waste treatment plants or aluminum recycling plants. They are not suitable for end-users with small quantities of waste. Small-tonnage baling machines suitable for end-user compression and baling, when using the above method, produce compacted metal material with defects in compaction and internal uniformity, resulting in poor compression and difficulty in controlling package weight. This leads to frequent unpacking during storage, transportation, and packaging, which is detrimental to subsequent operations. Furthermore, unlike paper and plastic waste, metal can waste often develops sharp edges during compression, which can easily cause scratches when the package unpacks.

[0005] Therefore, it is necessary to improve this area compression packaging method and design a small-sized compression device that can achieve a high compression ratio and stability for waste materials generated during the production and recycling of metal cans, in order to meet the corresponding end-user needs. Summary of the Invention

[0006] The technical problem solved by the present invention is to provide a baling machine for baling waste metal cans, so as to overcome the defects in the above-mentioned technical background.

[0007] The technical problem solved by this invention is achieved by the following technical solution:

[0008] A baling machine for baling waste metal cans includes a frame and a compression cylinder. The compression cylinder includes an independently formed base and a cylinder body, which together form a compression chamber with an open top surface. The base is fixedly connected to the frame, and the cylinder body is an openable structure. The baling machine opens and closes the compression chamber by opening and closing the cylinder body. The frame is also equipped with a pressure head that matches the compression chamber. The pressure head is hydraulically driven to compress the contents of the compression chamber from the open surface.

[0009] The compression chamber is a cylindrical cavity, and at least two annular rotating seats are formed in the direction of the cavity wall height corresponding to the inner side of the cylinder. The annular rotating seats have an inner ring surface that is flush with the compression chamber, and multiple extrusion teeth protruding towards the compression chamber side are formed on the inner ring surface of the annular rotating seats. A disc-shaped rotating seat is formed on the base corresponding to the bottom surface of the compression chamber, and an annular protrusion protruding towards the compression chamber side is formed on the disc surface of the disc-shaped rotating seat. The annular top surface of the annular protrusion has undulating wave-shaped secondary protrusions.

[0010] The annular rotary seat and the disc rotary seat are connected to an external power unit to drive their rotation. The annular rotary seat and the disc rotary seat rotate synchronously. Among the multiple annular rotary seats, the two annular rotary seats that are adjacent in upper and lower positions rotate in opposite directions. The disc rotary seat and the annular rotary seat at the lowest position rotate in opposite directions.

[0011] As a further definition, the cylinder comprises two independently formed semi-cylinders, each semi-cylinder having a semi-circular cross-section on the compression chamber side, the two semi-cylinders being assembled and connected on one side by a hinge, and having a staggered overlapping structure formed on the other side; the annular rotating seat comprises two semi-annular rotating seats, which are respectively matched and formed on the two semi-cylinders; the cylinder achieves the opening and closing of the compression chamber by the disassembly and overlapping combination of the two semi-cylinders;

[0012] The separation and overlapping of the cylinder and the annular rotating seat are achieved by hydraulic rods;

[0013] After the external power unit is turned off and released, the annular rotary seat returns to its initial position, and the compression cylinder separates and reassembles the semi-annular rotary seat and the semi-cylinder body in the initial position.

[0014] As a further limitation, the cylinder is a liftable structure, and the device opens and closes the compression chamber by lifting the cylinder.

[0015] As a further limitation, the compression cylinder is formed with combined reinforcing ribs, which include transverse ribs and longitudinal ribs, and the transverse ribs and the longitudinal ribs are formed in a grid pattern on the outer surface of the compression cylinder.

[0016] As a further limitation, the base has an annular stepped surface formed on its outer edge, and the cylinder has a matching annular groove formed on its bottom surface at the position corresponding to the annular stepped surface. The compression cylinder achieves the closure of the compression chamber at the connection position between the base and the cylinder through the cooperation of the annular stepped surface and the annular groove.

[0017] As a further limitation, the annular rotating seat and the extrusion tooth block are made of cast steel.

[0018] As a further limitation, the extrusion teeth and the wavy secondary protrusions are made of cast steel.

[0019] As a further limitation, the annular rotary seat and the disc rotary seat are driven by a combination of a hydraulic motor and a hydraulic pump as power units to achieve a low-speed, high-torque rotation effect.

[0020] As a further limitation, the extrusion teeth formed on the same annular rotary table are evenly spaced on the annular surface, while the extrusion teeth formed on adjacent annular rotary tables are staggered on the annular surface projection of the annular rotary table.

[0021] The extrusion teeth have the same tooth height, and the projections of the extrusion teeth on the compression chamber axis on the annular rotating seats that are adjacent in upper and lower positions have overlapping areas.

[0022] As a further limitation, the compression cylinder is also provided with a positioning ring, which is integrally formed with the compression cylinder and concentrically arranged in the upper part of the cylinder; the lower surface of the positioning ring is attached to the upper surface of the uppermost extrusion tooth block in the compression cylinder; and the inner diameter of the positioning ring is smaller than the inner diameter of the top surface contour circle of the uppermost extrusion tooth block in the compression cylinder during rotation.

[0023] The pressure head is circular, and its size is the same as the inner diameter of the positioning ring.

[0024] As a further limitation, the surface of the base is provided with a circular cross-shaped groove as a wire passage, so that after the waste metal can is compressed, the compressed waste metal can material blocks can be bundled and packaged at the wire passage position using metal wire or plastic strip.

[0025] The bottom of the frame is equipped with a strapping and baling machine that matches the wire threading groove, so that the compressed waste metal can block can be automatically strapped and baled at the wire threading groove position using plastic strapping as the strapping material.

[0026] Beneficial effects: The structure of the baler for baling waste metal cans of the present invention facilitates lightweight and miniaturization. It can combine the pressure of the side and bottom surfaces for compression under low tonnage pressure, effectively ensuring compression efficiency and effect. It can compress small batches of waste metal cans to obtain small-sized cylindrical compressed bodies. Its operation is simple. When using it, put the waste metal cans that have been sorted into the compression chamber and then start the equipment. It is suitable for promotion in residential communities, and is especially suitable for use in small and medium-sized waste recycling stations as terminals. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the compression structure of a preferred embodiment of the present invention.

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the intermediate compression cylinder.

[0029] Figure 3 for Figure 2 A schematic diagram of the cross-section at position AA.

[0030] The components are: 1. First hydraulic rod; 2. First hydraulic rod support; 3. Frame; 4. Press head; 5. Compression cylinder; 6. Fixing buckle; 7. Combined reinforcing rib; 8. First hinge support; 9. Bundling and baling machine; 10. Stabilizing seat; 11. Second hydraulic rod support; 12. Second hinge support; 13. Second hydraulic rod; 14. Hinge; 15. Positioning ring; 16. Half cylinder; 17. Annular rotating seat; 18. Extrusion tooth block; 19. Wave-shaped secondary protrusion; 20. Annular protrusion; 21. Base. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention and to make the technical means, creative features, objectives, and effects of the present invention readily understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with specific illustrations.

[0032] This embodiment is merely a part of the embodiments of the present invention, and represents all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed.

[0034] See Figures 1-3 A preferred embodiment of a baling machine for baling waste metal cans is provided. In this embodiment, the baling machine for baling waste metal cans includes a frame 3. A first hydraulic rod support 2 is provided on the upper part of the frame 3, and a second hydraulic rod support 11 is provided on the right side. A compression cylinder 5 is provided on the lower part of the frame 3, and a cavity is pre-formed in the frame 3 at the bottom of the compression cylinder 5. A strapping baler 9 is provided in the cavity as a baling device.

[0035] In this embodiment, the compression cylinder 5 includes an independently formed base 21 and a cylinder body. The base 21 and the cylinder body are separable structures. The base 21 and the cylinder body together form a compression cavity with an open top surface. The pressure head 4, which is opposite to the compression cavity, is connected to the first hydraulic rod 1 and is fixedly mounted on the first hydraulic rod bracket 2 through the first hydraulic rod 1. The baler uses the pressure head 4 as a force-applying element and performs compression operations on the waste metal cans placed in the compression cavity through hydraulic drive on the open surface of the compression cavity.

[0036] The compression chamber inside the cylinder is cylindrical, and the cylinder includes two semi-cylinders 16, one front and one rear. These two semi-cylinders 16 are connected on the right side by upper and lower hinges 14. The rear semi-cylinder 16 is fixedly connected to the frame 3, while the front semi-cylinder 16 is movable and can be rotated to the right via the hinges 14 to open the corresponding compression chamber from the side. In this embodiment, to facilitate opening the front semi-cylinder 16, a first hinge support 8 is formed on the side wall of the movable semi-cylinder 16. A second hydraulic rod 13 is connected to the first hinge support 8. The other end of the second hydraulic rod 13 is connected to a second hydraulic rod bracket 11 via a second hinge support 12. The second hydraulic rod 13 is connected to an external hydraulic system, allowing the compression cylinder 5 to open and close from the side by traction of the connected semi-cylinder 16 during the extension and retraction of the second hydraulic rod 13 powered by hydraulic pressure.

[0037] In this embodiment, to improve the structural stability of the compression cylinder 5 after closure and to facilitate its closure under external force, a staggered overlapping structure is formed at the closing position of the two semi-cylinders 16 opposite to the hinge 14. Furthermore, upper and lower fixing buckles 6 are formed on the outer side of the closing position of the two semi-cylinders 16. The two semi-cylinders 16 are positioned by the staggered overlapping structure when closed by the second hydraulic rod 13, and are then fastened by the fixing buckles 6 after closure. To improve the overall structural strength of the compression cylinder 5 and its structural stability under hydraulic impact, combined reinforcing ribs 7 are formed on the outer walls of both semi-cylinders 16. These combined reinforcing ribs 7 include transverse ribs and longitudinal ribs, which are interwoven in a grid pattern on the outer surface of the two semi-cylinders 16 to serve as a sidewall reinforcement structure.

[0038] And see Figure 2 The schematic diagram of the compression cylinder 5 shows that four annular rotating seats 17 are formed on the inner wall of the compression chamber inside the compression cylinder 5. These four annular rotating seats 17 are spaced apart in the height direction inside the compression cylinder 5. The annular rotating seats 17 are embedded in the pre-grooved positions on the inner side wall of the compression cylinder 5 and can rotate around the axis of the compression cylinder 5 at the pre-grooved positions. In order to cooperate with the two half-cylinders 16 that make up the cylinder body of the compression cylinder 5, the annular rotating seats 17 include two semi-annular rotating seats, which are respectively matched and formed on the two half-cylinders. When the cylinder body realizes the opening and closing of the compression chamber by splitting and overlapping the two half-cylinders 16, the annular rotating seats 17 can be turned back to the initial position so that the opening position and hinge position of the annular rotating seats 17 overlap with the opening position and hinge position of the two half-cylinders 16. Then, the compression cylinder can be split and combined with the semi-annular rotating seats 17 and the half-cylinders 16 in the initial position.

[0039] In this embodiment, each of the four annular rotary seats 17 has eight extrusion teeth 18 formed on its inner ring surface. The extrusion teeth 18 on different annular rotary seats 17 have the same size and shape and are all made of cast steel. The extrusion teeth 18 formed on the same annular rotary seat 17 are evenly spaced on the inner ring surface of the annular rotary seat 17. The extrusion teeth 18 formed on adjacent annular rotary seats 17 are staggered on the annular surface projection of the annular rotary seat 17. The projections of the staggered extrusion teeth 18 on the axis of the compression chamber have overlapping areas, so that when the adjacent annular rotary seats 17 are driven to rotate by a combination of hydraulic motor and hydraulic pump as the power unit, there is no extrusion blind zone when the upper and lower sets of extrusion teeth 18 are extruded similarly.

[0040] A positioning ring 15 is also formed on the side wall of the compression chamber above the annular rotary seat 17. This positioning ring 15 is integrally formed with the two semi-cylinders 16 that make up the compression cylinder. When the semi-cylinders 16 are closed, they are concentrically positioned in the upper part of the compression cylinder. The lower surface of the positioning ring 15 abuts against the upper surface of the uppermost extrusion tooth block 18 inside the compression cylinder, so that when the corresponding extrusion tooth block 18 rotates with the corresponding annular rotary seat 17, it abuts against the upper surface of the outline circle drawn by the extrusion tooth block 18. The inner diameter of the positioning ring 15 is smaller than the inner diameter of the outline circle drawn by the extrusion tooth block 18 when it rotates with the corresponding annular rotary seat 17. The pressure head 4 is circular, and its size is consistent with the inner diameter of the corresponding positioning ring 15, so that when the pressure head 4 presses down, it can... Figure 2 The material is pressed into the compression chamber as shown, and the amount of material fed at one time can be controlled by adjusting the height of the positioning ring 15.

[0041] The compression cylinder 5 has a disc-shaped rotating seat formed on the base 21 corresponding to the bottom surface of the compression chamber. The disc-shaped rotating seat has an annular protrusion 20 protruding towards the compression chamber side on its disc surface, and a wave-shaped secondary protrusion 19 with undulating upper and lower surfaces is formed on the annular top surface of the annular protrusion. The wave-shaped secondary protrusion 19, like the extrusion tooth block 18, is made of cast steel material with good structural strength, and the base 21 is also driven to rotate by a combination of hydraulic motor and hydraulic pump as the power unit.

[0042] In this embodiment, the annular rotary seat 17 and the disc rotary seat 21, driven by a combination of hydraulic motor and hydraulic pump, operate synchronously. Among the four annular rotary seats 17, the two annular rotary seats 17 that are adjacent in the upper and lower positions rotate in opposite directions; while the disc rotary seat 21 rotates in opposite directions to the annular rotary seat 17 that is at the lowest position.

[0043] The operation of compressing and baling waste metal cans using the baling machine for baling waste metal cans in this embodiment is as follows:

[0044] S1 first cleans the compression chamber and resets the pressure head 4 using the first hydraulic rod 1. After cleaning the compression chamber, the compression cylinder 5 is closed by pushing with the second hydraulic rod 13, and then the fixing buckle 6 is fastened to obtain a complete compression chamber.

[0045] S2 inserts the scrap metal can into the compression chamber through the opening in the middle of the positioning ring 15. During the insertion of the scrap metal can, the annular rotating seat 17 and the disc rotating seat 21 are controlled to rotate synchronously to ensure that the scrap metal can remains uniform in the compression chamber and fills the entire compression chamber.

[0046] S3 controls the pressure head 4 to press down to compress the waste metal can in the compression chamber. During the compression operation, the annular rotating seat 17 and the disc rotating seat 21 continue to rotate. After the pressure head 4 is pressed down to the lower plane position of the positioning ring 15, it resets.

[0047] S4 cycles through feeding and step S3 until the top surface of the compressed waste metal can block obtained by non-metallic can compression reaches the position of positioning ring 15; at this time, the compressed waste metal can block has better compaction and uniformity.

[0048] After S5 resets the first hydraulic rod 1, it opens the fixing buckle 6 and opens the compression cylinder 5 through the second hydraulic rod 13, thus completing one compression cycle by taking out the compressed waste metal can block.

[0049] Based on the above workflow, the baler of this embodiment can compress waste materials, pressing irregular waste metal cans into compressed waste metal can blocks, which can greatly reduce the volume of waste materials, facilitate waste disposal, and thus greatly reduce waste disposal costs. During the compression process, the compressed waste metal can blocks need to be compressed multiple times by the pressure head 4. During each compression, the extrusion teeth 18 and the wavy secondary protrusions 19 can squeeze the compressed waste metal can blocks from the sides and bottom, ensuring the compaction and uniformity of the compressed waste metal can blocks. At the same time, through the extrusion of the extrusion teeth 18 and the rotation and grinding of the base 21, the sharp edges generated on the outer surface of the compressed waste metal can blocks can be effectively reduced, ensuring safety during subsequent operations. In addition, since the baler of this embodiment performs multi-directional extrusion compression in the compression chamber of the compression cylinder 5, it can increase the compaction of the compressed waste metal can blocks by squeezing them together with the extrusion of the side extrusion teeth 18 when the front pressure is relatively small, and improve the internal uniformity of the compressed waste metal can blocks by redistributing the internal structure through the bottom extrusion of the wavy secondary protrusions 19.

[0050] To further improve the performance of this embodiment, the base 21, which is a separable structure, has an annular stepped surface formed on its outer edge, and the compression cylinder 5 has a matching annular groove formed on its bottom surface at the position corresponding to the annular stepped surface. The compression cylinder 5 achieves the sealing of the compression chamber at the connection position between the base 21 and the cylinder by the cooperation of the annular stepped surface and the annular groove to prevent the waste metal can from getting stuck in the connection position during the compression process.

[0051] Under the technical conditions of the present invention, the compressed waste metal can block is cylindrical and is retained on the surface of the base 21. In order to facilitate the bundling operation, the surface of the base 21 is provided with a cross-shaped groove with a circular shape as a wire groove. The wire groove can be used to bundle and pack the compressed waste metal can block with metal wire or plastic strip.

[0052] To further ensure safety, operators should wear cut-resistant gloves when bundling and packaging the cylindrical waste metal cans using wire or plastic straps.

[0053] To further improve the ease of operation, automatic packaging can be performed using a strapping and packaging machine 9 formed at the bottom of the base 21.

[0054] In another embodiment, unlike the two half-cylinders 16 that make up the cylinder body of the compression cylinder 5, the cylinder body can be replaced by a liftable structure. Its usage effect and operation steps are similar. It is only necessary to keep the pressure head 4 pressed against the surface of the formed waste metal can compressed block when removing the waste metal can compressed block. Then, lift the cylinder body to remove the waste metal can compressed block from the cylinder body of the compression cylinder 5 and keep it on the base 21. Then, control the pressure head 4 to reset to complete the removal of the waste metal can compressed block.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A baling machine for baling waste metal cans, characterized in that, The equipment includes a frame and a compression cylinder. The compression cylinder includes an independently formed base and a cylinder body. The base and the cylinder body form a compression cavity with an open top surface. The base is fixedly connected to the frame. The cylinder body is an openable structure. The packaging machine opens and closes the compression cavity by opening and closing the cylinder body. The frame is also equipped with a pressure head that matches the compression chamber. The pressure head is hydraulically driven to compress the contents of the compression chamber from an open surface. The compression chamber is a cylindrical cavity, and at least two annular rotating seats are formed in the direction of the cavity wall height corresponding to the inner side of the cylinder. The annular rotating seats have an inner ring surface that is flush with the compression chamber, and multiple extrusion teeth protruding towards the compression chamber side are formed on the inner ring surface of the annular rotating seats. A disc-shaped rotating seat is formed on the base corresponding to the bottom surface of the compression chamber, and an annular protrusion protruding towards the compression chamber side is formed on the disc surface of the disc-shaped rotating seat. The annular top surface of the annular protrusion has undulating wave-shaped secondary protrusions. The annular rotary seat and the disc rotary seat are connected to an external power unit to drive their rotation. The annular rotary seat and the disc rotary seat rotate synchronously. Among the multiple annular rotary seats, the two annular rotary seats that are adjacent in upper and lower positions rotate in opposite directions. The disc rotary seat and the annular rotary seat at the lowest position rotate in opposite directions.

2. The baling machine for baling waste metal cans according to claim 1, characterized in that, The cylinder comprises two independently formed semi-cylinders. The cross-section of each semi-cylinder on the compression chamber side is semi-circular. The two semi-cylinders are assembled and connected on one side by a hinge, and a staggered overlapping structure is formed on the other side. The annular rotating seat comprises two semi-annular rotating seats, which are respectively matched and formed on the two semi-cylinders. The cylinder realizes the opening and closing of the compression chamber by the disassembly and overlapping combination of the two semi-cylinders.

3. The baling machine for baling waste metal cans according to claim 2, characterized in that, The separation and assembly of the cylinder and the annular rotating seat are achieved by hydraulic rods.

4. The baling machine for baling waste metal cans according to claim 2, characterized in that, After the external power unit is turned off and released, the annular rotary seat returns to its initial position, and the compression cylinder separates and reassembles the semi-annular rotary seat and the semi-cylinder body in the initial position.

5. The baling machine for baling waste metal cans according to claim 1, characterized in that, The cylinder is a liftable structure, and the equipment opens and closes the compression chamber by lifting the cylinder.

6. The baling machine for baling waste metal cans according to claim 1, characterized in that, The compression cylinder is formed with combined reinforcing ribs, which include transverse ribs and longitudinal ribs. The transverse ribs and longitudinal ribs are formed in a grid pattern on the outer surface of the compression cylinder.

7. The baling machine for baling waste metal cans according to claim 1, characterized in that, The base has an annular stepped surface formed on its outer edge, and the cylinder has a matching annular groove formed on its bottom surface at the position corresponding to the annular stepped surface. The compression cylinder achieves the closure of the compression chamber at the connection position between the base and the cylinder through the cooperation of the annular stepped surface and the annular groove.

8. The baling machine for baling waste metal cans according to claim 1, characterized in that, The extrusion teeth formed on the same annular rotating base are evenly spaced on the annular surface, while the extrusion teeth formed on adjacent annular rotating bases are staggered on the annular surface projection of the annular rotating base. The extrusion teeth have the same tooth height, and the projections of the extrusion teeth on the compression chamber axis on the annular rotating seats that are adjacent in upper and lower positions have overlapping areas.

9. The baling machine for baling waste metal cans according to claim 1, characterized in that, The compression cylinder is also provided with a positioning ring, which is integrally formed with the compression cylinder and concentrically set in the upper part of the cylinder. The lower surface of the positioning ring is attached to the upper surface of the uppermost extrusion tooth block in the compression cylinder. The inner diameter of the positioning ring is smaller than the inner diameter of the top surface contour circle of the uppermost extrusion tooth block in the compression cylinder during rotation. The pressure head is circular and its size is consistent with the inner diameter of the positioning ring.

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