Plastic bottle processing apparatus

Abstract

To provide a PET bottle processing apparatus for simultaneously performing a process for separating a cap, a label and other accessories from a bottle body of a PET bottle and a cleaning process in one apparatus.SOLUTION: The PET bottle processing apparatus 1 includes a case 2 having a substantially rectangular parallelepiped shape, and two rotary shafts 31,32 rotatably disposed in the case 2. A plurality of blade members 4 protrude radially outward from the outer peripheral surface of the rotating shaft 31,32. A cutting member 8 is fixed to the tip of the blade member. The blade members 4 form an annular array arranged on the outer circumferential surface of the rotating shaft 31,32 at equal intervals along the axial direction of the rotating shaft. The two rotating shafts 3132 and are arranged in parallel in the case 2, and rotate with a phase shift so that the positions of the blade member 4 and the cutting member 8 fixed to the rotating shaft 31 are different from the positions of the blade member 4 and the cutting member 8 fixed to the rotating shaft 32.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a plastic bottle processing device, and more particularly to a plastic bottle processing device that can simultaneously clean the inside and outside of used plastic bottles while removing the caps and labels from the bottle bodies. [Background technology]

[0002] PET bottles are subject to the Containers and Packaging Recycling Act, and many local governments and private companies collect them separately. Collected PET bottles are reused as raw materials for various resin products. The majority of PET bottles have a bottle body made of polyethylene terephthalate. However, the label, cap, and sealing ring are made of different materials. In addition, the drinking spout and handle may be made of materials other than polyethylene terephthalate. Therefore, before recycling, it is preferable to separate the polyethylene terephthalate bottle body from the components made of materials other than polyethylene terephthalate.

[0003] Also, in the case of PET bottles that have been used, they may be collected with juice or tea liquid still inside. They may also be collected with the outside dirty or with trash inside due to being left behind. Therefore, before reusing PET bottles, it is necessary to clean the inside and outside of the bottles.

[0004] Various devices have been proposed for separating attached components from the bottle body of a PET bottle and for cleaning the bottle. Patent Document 1 discloses a plastic bottle cutting and sorting device that, while the bottle is positioned by a holding mechanism, separates the bottle body and cuts off the cap with a cutting blade having a generally T-shaped cross section consisting of a horizontal cutting blade and a vertical cutting blade. Patent Document 2 discloses a multi-stage cleaning and dehydrating device for small PET bottle pieces that feeds the small pieces of cut PET bottles into a high-speed rotary washer for agitation and cleaning. Patent Document 3 also discloses a PET bottle fragment cleaning and sorting device that includes a vertical cutting circular saw device and a horizontal cutting circular saw device for cutting the PET bottle into pieces, and also includes a water tank for cleaning the PET bottles after cutting.

[0005] The inventor also invented a PET bottle processing device that can simultaneously clean the inside and outside of used PET bottles while removing the cap and label from the body, and disclosed this in Patent Document 4. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-35668 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-15636 [Patent Document 3] Japanese Patent Application Laid-Open No. 2007-276258 [Patent Document 4] Patent application No. 2023-062497 Summary of the Invention [Problem to be solved by the invention]

[0007] Conventionally known PET bottle processing equipment separates the process of separating the attached components from the bottle body and the process of cleaning it. Because the processing process is divided into multiple work steps, the entire process takes time and the entire equipment tends to be large.

[0008] The present invention was made in consideration of the current situation, and aims to solve the problem of providing a PET bottle processing device that can simultaneously perform the process of separating other attached parts from the polyethylene terephthalate PET bottle body and the cleaning process in a single device, thereby shortening the working time and making the entire device smaller. [Means for solving the problem]

[0009] The present invention relates to a PET bottle processing device. The PET bottle processing device of the present invention separates accessories from the bottle body and crushes the bottle. The PET bottle processing device of the present invention includes a substantially rectangular parallelepiped case having a PET bottle inlet on its upper surface and a first outlet on its lower surface for discharging the bottle body, two rotating shafts rotatably arranged within the case, multiple blade members protruding radially outward from the outer circumferential surface of the rotating shafts, and cutting members fixed to the tips of the blade members. The PET bottle processing device of the present invention has multiple blade members arranged at equal intervals on the outer circumferential surface at a predetermined distance from the end of the rotating shaft, thereby forming an annular array of blade members. The annular array of blade members is arranged at equal intervals along the axial direction of the rotating shaft, and the blade members are inclined at a predetermined angle relative to a radial cross section of the rotating shaft. The cutting member has multiple protrusions with acute-angled tips that protrude in the direction of rotation of the rotating shaft.

[0010] In the PET bottle processing device of the present invention, it is preferable that the inner surface of the top surface of the case has a plurality of rows of acute-angled triangular projections that protrude downward.

[0011] In the PET bottle processing device of the present invention, it is preferable that a plurality of rows of acute triangular projections projecting toward the center of the case are arranged on the inside of the side of the case.

[0012] The PET bottle treatment device of the present invention preferably has a water inlet on the top surface of the case for supplying water, and a second outlet on the bottom surface of the case for discharging accessories together with water.

[0013] The present invention also provides a method for treating PET bottles. The method for treating PET bottles of the present invention is a method for treating PET bottles by supplying water and discharging accessories together with the water. A method for treating PET bottles using the PET bottle treating device of the present invention, comprising the steps of: a component separation process in which two rotating shafts inside the case are rotated at high speed, causing the blade members and cutting members of the rotating shafts to come into contact with the PET bottles, peeling off the labels from the PET bottles, removing the caps, and releasing the contents; A cleaning process in which the PET bottle body is cleaned with cleaning water supplied in a shower from the water supply port. a conveying step in which the PET bottle body is conveyed by a blade member to an upper first outlet, and accessories other than the PET bottle body are conveyed along the underside of the case to a lower second outlet together with cleaning water; The PET bottle processing method of the present invention is characterized in that the component separating step, the cleaning step, and the transporting step are carried out simultaneously. [Effects of the Invention]

[0014] In the PET bottle processing machine of the present invention, the blade member on one rotating shaft and the blade member on the other rotating shaft and the cutting member at their tip rotate at a predetermined distance, so that the blade member and the cutting member peel off the cap and label from the bottle body and partially cut the PET bottle. At the same time, water for cleaning is supplied from the water inlet at the top, allowing the PET bottle to be washed.

[0015] The PET bottle processing device of the present invention can be fixed in an inclined position relative to the installation surface so that the first outlet side is higher than the second outlet side. By supplying cleaning water from the water inlet on the top surface, a constant water flow is generated on the underside of the case. Materials removed from the PET bottle bodies are carried by this water flow to the second outlet and then discharged to the outside. This configuration eliminates the need for the conventional process of separating and sorting the PET bottles and accessories, allowing for efficient separation of the PET bottle bodies and accessories.

[0016] The PET bottle processing device of the present invention is equipped with at least one of an acute-angled triangular top protrusion provided on the inside of the top surface of the case and an acute-angled triangular side protrusion provided on the inside of the side of the case, so that it can cut and divide PET bottles of various capacities into sufficiently small pieces. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a side view of the PET bottle processing apparatus of the present invention. [Figure 2] FIG. 2 is a top view of two rotating shafts of the PET bottle processing device. [Figure 3] FIG. 3 is a cross-sectional view of the PET bottle processing device. [Figure 4] FIG. 4 is a plan view showing an example of the shape of the cutting member. DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the PET bottle processing device of the present invention will be described in detail below with reference to the drawings.

[0019] Fig. 1 shows a side view of a PET bottle processing device 1 of the present invention. The PET bottle processing device 1 comprises a case 2 and two rotating shafts 31 and 32 rotatably arranged within the case 2. Fig. 2 shows a top view of the two rotating shafts of the PET bottle processing device 1. The rotating shafts 31 and 32 are equipped with a plurality of blade members 4 that protrude radially outward from their outer circumferential surfaces. A cutting member 8 is fixed to the tip of each blade member 4.

[0020] The case 2 is formed of a flat upper surface 2a, a pair of flat side surface portions 2b, and a flat lower surface 2c, and has an overall appearance of a roughly rectangular parallelepiped. The upper surface 2a of the case 2 is provided with one or more water inlets 21 and a PET bottle inlet 22. A first discharge outlet 23 for discharging the bottle bodies of treated PET bottles is provided at the end of the lower surface 2c of the case 2 opposite the PET bottle inlet 22. A second discharge outlet 24 is provided on the lower surface 2c of the case 2 opposite the first discharge outlet 23 and below the PET bottle inlet 22. The entire case 2 is formed of steel.

[0021] The two rotating shafts 31, 32 of the PET bottle processing device are formed from cylindrical steel material, and each has a plurality of blade members 4 protruding radially outward from the outer circumferential surface. One end portion 31a, 32a of each of the two rotating shafts 31, 32 is connected to a driving means 5 disposed outside the case 2, and the two rotating shafts 31, 32 are rotated by the driving means 5. The other end portions 31b, 32b of each of the two rotating shafts 31, 32 are engaged with the case 2.

[0022] Figure 3 shows a cross-sectional view of the PET bottle processing device 1. The shape and arrangement of the blade member 4 will be described with reference to Figures 2 and 3. The most preferable shape of the blade member 4 is a rectangular parallelepiped, with adjacent faces forming right angles.

[0023] A preferred arrangement of the blade members 4 will be described in more detail. A plurality of blade members 4 are fixed on the outer circumferential surfaces at a predetermined distance from the ends of the rotating shafts 31, 32. In other words, the plurality of blade members 4 are arranged at equal intervals along the outer periphery of the radial cross section of the rotating shafts 31, 32. Such an arrangement of the plurality of blade members 4 is referred to as an annular array 40 of the blade members 4. The annular array 40 of the blade members 4 is arranged in multiple rows at equal intervals along the axial direction of the rotating shafts 31, 32.

[0024] 2 and 3 show an embodiment in which each annular array 40 of blade members 4 includes two blade members 4, with the two blade members 4 forming an angle of 180° with respect to each other. This is an example, and the number of blade members 4 included in the annular array 40 may be three or more. When the annular array 40 includes three blade members, the angles between the blade members are preferably uniformly spaced at 120°. Similarly, when the annular array 40 includes four blade members, the angles between the blade members are preferably uniformly spaced at 90°. In this manner, the multiple blade members 4 are arranged at equal intervals along the periphery of the radial cross section of the rotation shafts 31 and 32.

[0025] Here, the blade members 4 in one annular array 40 are arranged so as to protrude in a direction different from the blade members 4 in adjacent annular arrays 40. Preferably, they protrude in the direction of the bisector of the angle formed by the two blade members 4 included in adjacent annular arrays 40. For example, as shown in FIG. 2, if an annular array 40 includes two blade members 4 and the angle formed by them is 180°, it is preferable that the blade members 4 in the adjacent annular arrays 40 protrude in a direction perpendicular to the blade members 4 in the annular arrays 40 before and after them.

[0026] Furthermore, the blade members 4 are inclined at an angle of 10° to 45° with respect to a cross section in the radial direction of the rotating shafts 31 and 32. The inclination of the blade member 4 arranged on the rotating shaft 31 is opposite to the inclination of the blade member 4 arranged on the rotating shaft 32. The biggest difference between the blade member 4 arranged on the rotating shaft 31 and the blade member 4 arranged on the rotating shaft 32 is the direction of the inclination, and other arrangements and shapes are substantially the same.

[0027] The two rotating shafts 31, 32 are arranged inside the case 2 so as to be parallel to each other and spaced apart by a distance that is shorter than twice the length of the blade members 4. To prevent the blade members 4 arranged on the rotating shaft 31 from coming into contact with the blade members 4 arranged on the rotating shaft 32, the driving means 5 that rotates each of the rotating shafts 31, 32 controls the phases of the rotating shafts 31 and 32 to be shifted so that the angle at which the blade members 4 fixed to one rotating shaft protrude in the radial direction differs from the angle at which the blade members 4 fixed to the other rotating shaft protrude in the radial direction.

[0028] A cutting member 8 is fixed to the tip of every blade member 4. Figure 4(a) shows the most suitable cutting member 8. The cutting member 8 is made of a metal plate with a uniform thickness throughout, and has an outline similar to a windmill-shaped shuriken.

[0029] The cutting member 8 has a plurality of protrusions 81. While FIG. 4 shows the cutting member 8 having eight protrusions 81, the number of protrusions 81 can be any number equal to or greater than two. The protrusions 81 have two linear end sides 8a, 8b, which form an acute angle at the tip. The protrusions 81 are fixed to the tip of the blade member 4 so that the tip protrudes in the direction of rotation of the rotating shafts 31, 32.

[0030] In the PET bottle processing device 1 of this embodiment, upper surface protrusions 11, each shaped like an acute triangle and protruding downward, are arranged in multiple rows on the inside of the upper surface 2a of the case 2. The upper surface protrusions 11 are formed from a metal plate having a uniform thickness throughout. While Fig. 1 shows 11 rows of upper surface protrusions 11, the number of rows can be changed as needed depending on the length of the case.

[0031] 3, the shape of the top surface protrusion 11 located at the center of the top surface portion 2a is an isosceles triangle. On the other hand, the top surface protrusion 11 located near the side surface portion 2b of the case 2 is preferably formed as a right triangle or an acute triangle with the hypotenuse located at the center.

[0032] Furthermore, the PET bottle processing device 1 of this embodiment is equipped with a plurality of side projections 12 extending from both sides of the side surface 2b of the case 2 toward the top surface 2a. Each side projection 12 is formed from a metal plate of uniform thickness and has an acute-angled triangular shape. Each side projection 12 is positioned higher than the rotational path of the cutting member 81 and is separated from the cutting member 8 by a predetermined distance.

[0033] The spacing between the top projections 11 can be wider the closer to the PET bottle inlet 22 and narrower the closer to the first discharge outlet 23. Similarly, the spacing between the side projections 12 in the rotation axis direction can also be wider the closer to the PET bottle inlet 22 and narrower the closer to the first discharge outlet 23. Because there are many PET bottle bodies that have not yet been torn near the PET bottle inlet 22, a wider spacing between the top projections 11 and the side projections 12 improves the separation effect of the PET bottle bodies and accessories. On the other hand, the closer to the first discharge outlet 23, the more the PET bottle bodies are split, so the spacing between the top projections 11 and the side projections 12 becomes narrower. This prevents the PET bottle bodies from passing between the top projections 11 and the side projections 12 without being processed.

[0034] In a preferred embodiment, the rotating shaft 31 rotates clockwise when viewed from the driving means 5, and the rotating shaft 32 rotates counterclockwise when viewed from the driving means 5. The blade member 4 and cutting member 8 arranged on the rotating shaft 31 and the blade member 4 and cutting member 8 arranged on the rotating shaft 32 repeatedly move toward and away from each other without coming into contact with each other, striking the PET bottle to partially tear it open and separate other attached members from the bottle body.

[0035] Furthermore, when the protrusion 81 of the cutting member 8 approaches the tip of the top surface protrusion 11 or the tip of the side surface protrusion 12 by rotation, the PET bottle is partially torn and other attached members are separated from the bottle body of the PET bottle.

[0036] The shape of the blade member 4 is important for efficiently separating other accessories from the bottle body of the PET bottle. The right-angled corners of the rectangular blade member 4 are suitable for separating the bottle body from the accessories, and at the same time, they can separate the accessories from the bottle body without shredding the bottle body more than necessary.

[0037] One or more water inlets 21 are provided on the top surface 2a of the case 2. By supplying water from the water inlets 21, it is possible to wash PET bottles inside the case 2. A PET bottle insertion port 22 is provided on one end of the top surface 2a of the case 2.

[0038] The PET bottle processing device 1 of this embodiment is equipped with an angle adjustment means that can fix the case 2 in an inclined state with respect to the installation surface G so that the first discharge outlet 23 side of the case 2 is higher than the second discharge outlet 24 side. The angle adjustment means is composed of a support 6 and a hinge 61 attached to a base 10 that mounts the case 2 and the drive unit 5. The hinge 61 of the angle adjustment means is located at the end of the case 2 where the PET bottle insertion port 22 is provided, and the support 6 is located at the end of the case 2 where the first discharge outlet 23 is provided. The support 6 has multiple holes for fixing the base 10, and the angle of the case 2 can be adjusted by selecting the hole to fix the base 10 to. The angle of the case 2 may be any angle that allows water supplied from the water inlet 21 to flow to the second discharge outlet 24, and is preferably adjusted to an angle in the range of 3° to 15°.

[0039] Depending on the quality required for the PET bottle processing, the time that the PET bottle remains in the case 2 can be controlled by adjusting three elements: the inclination angle of the case 2, the rotation speed of the rotation shafts 31 and 32, and the angle of the blade members 4 relative to the cross section of the rotation shafts 31 and 32. By controlling the time that the PET bottle remains in the case 2, it is possible to adjust the state of cleaning of the PET bottle to be processed and the separation process of accessories.

[0040] For PET bottles that have already been pre-washed and have had their accessories separated, such as those that have been collected under established rules, when the processing volume is increased and strict washing quality is not required, it is preferable to adopt one of the following configurations: 1) reduce the inclination angle of case 2, 2) increase the rotation speed of rotating shafts 31, 32, or 3) increase the angle of blade members 4 relative to the cross section of rotating shafts 31, 32. Increasing the angle between blade members 4 and the cross section of rotating shafts 31, 32 shortens the time that PET bottles remain in case 2, enabling more rapid processing.

[0041] When processing PET bottles that contain debris and require more reliable cleaning and separation of accessories, the cleaning and separation of accessories can be performed more thoroughly by adopting one of the following configurations: 1) increasing the inclination angle of the case 2, 2) reducing the rotation speed of the rotating shafts 31 and 32, or 3) decreasing the angle of the blade members 4 relative to the cross section of the rotating shafts 31 and 32 to increase the retention time. In this way, the PET bottle processing device 1 of this embodiment can adjust the retention time setting to adjust the processing quality.

[0042] A plurality of protective members 7, each made of a 6-9 mm thick metal plate, are arranged on the inside of at least a portion of the lower side of the side portion 2b and on the underside of the bottom surface 2c of the case 2, excluding the first outlet 23. The protective members 7 have two arc-shaped cross sections that protrude downward so as to be positioned outside the path of the cutting member 8, and are detachably arranged in series along the bottom surface 2c of the case 2 from the first outlet side to the second outlet side. The protective members 7 prevent wear on the case 2 caused by collisions with PET bottles and accessories. The protective members 7 have a slit-shaped opening at a position opposite the second outlet 24, which prevents a PET bottle inserted through the PET bottle insertion port 22 from being discharged directly from the second outlet 24, allowing only the cap and label to be discharged.

[0043] The following describes a PET bottle processing method using the PET bottle processing device 1 of this embodiment. As shown in Figure 1, the case 2 of the PET bottle processing device 1 is fixed in an inclined state so that the first discharge outlet 23 is higher than the end on the PET bottle inlet 22 and second discharge outlet 24 side.

[0044] The PET bottle processing method of this embodiment is characterized by simultaneously performing a component separation process and a cleaning process. The component separation process involves rotating two rotating shafts 31, 32 inside the case at high speed, causing the blade member 4 and cutting member 8 to come into contact with the PET bottle, peeling the label off the PET bottle, removing the cap, and discharging the contents. The component separation process is more efficient when the PET bottle collides with the top projection 11 and side projection 12. The cleaning process involves washing the PET bottle body with a shower of cleaning water supplied from the water inlet 21. The PET bottle processing method of the present invention also includes a transport process in which the PET bottle body is transported by the blade member 4 to the upper first discharge outlet 23, while the accessories separated from the PET bottle body are transported along the underside 2c of the case 2 with the cleaning water to the lower second discharge outlet 24.

[0045] In the member separation process, the driving means 5 rotates the rotating shaft 31 at high speed in a clockwise direction as viewed from the driving means 5. The rotating shaft 32 rotates at high speed in a counterclockwise direction as viewed from the driving means 5. The high-speed rotation of the rotating shafts 31, 32 also rotates the blade member 4 and cutting member 8 at high speed. The driving means 5 rotates the rotating shafts 31 and 32 with a phase shift so that the positions to which the blade member 4 and cutting member 8 of the rotating shaft 32 move as they rotate at high speed are on the bisector of the angle between the adjacent blade members 4 of the rotating shaft 31.

[0046] In the transporting process, which is carried out simultaneously with the part separating process, the PET bottle body is transported toward the first discharge outlet 23 by the blade member 4 and cutting member 8, which rotate at high speed. The accessories separated from the PET bottle body pass between the blade member 4 and cutting member 8 and fall onto the protective member 7.

[0047] In the cleaning process, which is carried out simultaneously with the component separation process and the transport process, water is sprayed in a shower-like manner from the water supply port 21 into the case 2 to clean the PET bottle body and accessories.

[0048] In the PET bottle disposal method of this embodiment, water supplied from the water supply port 21 constantly creates a water flow between the blade member 4 and the protective member 7, causing accessories removed from the PET bottle body to fall onto the protective member 7 and be carried by the water flow downward in the case 2. The accessories eventually pass through the slit-shaped opening in the protective member 7 and move to the second discharge port 24, where they are discharged. [Example]

[0049] The following examples further embody the present invention. Note that the dimensions and angles given below are merely examples and are not intended to limit the scope of the claims.

[0050] The PET bottle processing device 1 of this embodiment has two rotating shafts 31 and 32, each 90 mm in diameter and 5250 mm in length, arranged inside a case 2 that is 5000 mm long, 760 mm wide, and 500 mm high. Three water supply ports are provided at the top of the case 2 to supply cleaning water. The case 2 is installed at an angle of 10° relative to the installation surface.

[0051] The blade members 4 protruding radially from the outer circumferential surfaces of the rotating shafts 31 and 32 are metal plates with a width of 60 mm, a length of 156 mm, and a thickness of 6 mm. Two blade members 4 are included in each annular array 40, and the angle between two blade members 4 is 180°. Furthermore, 34 annular arrays 40 are formed per rotating shaft, spaced 75 mm apart. All blade members 4 are arranged so as to be inclined at an angle of 20° with respect to the radial cross section of the rotating shafts 31 and 32.

[0052] The cutting member 8 of this embodiment shown in Figure 4(a) is formed from a metal plate with a diameter of 100 mm and a thickness of 4.5 mm. The cutting member 8 has eight protrusions 81, and is shaped like a windmill, resembling a shuriken. The length of side 8a of protrusion 81 is 21 mm, and the length of side 8b is 15 mm.

[0053] A plurality of top surface protrusions 11 are fixed in a row so as to protrude downward from the top surface portion 2a of the case 2. The row of top surface protrusions 11 is arranged at 300 mm intervals, perpendicular to the axial direction of the rotation shafts 31 and 32. In this embodiment, the top surface protrusion 11 in the center of the row is 80 mm wide and 80 mm high. It is a 5 mm thick equilateral triangular metal plate, but this is just an example and it may also be formed into an isosceles triangle. The top surface protrusion 11 located near the side surface portion 2b is a right triangle with a height of 50 mm, with its hypotenuse positioned toward the center of the case 2.

[0054] A plurality of side projections 12 extend from both sides of the side surface 2b of the case 2 toward the top surface 2a. In this embodiment, the side projections 12 are formed from a metal plate with a thickness of 5 mm and a length of 70 mm, and have an acute triangular shape.

[0055] A distance of 10 mm or more is provided between the upper surface projection 11 and the cutting member 8. Also, a distance of 10 mm or more is provided between the side surface projection 12 and the cutting member 8.

[0056] The protective member 7 is positioned such that the distance from the tip of the cutting member 8 is 2 mm to 10 mm. A plurality of 20 mm x 200 mm slit-shaped openings are provided in the protective member 7 at a position facing the second discharge outlet 24. Because the height of the PET bottle cap is within 20 mm, the labels, caps, and other accessories that are separated from the PET bottle body pass through the slits and fall into the second discharge outlet 24. On the other hand, even if the PET bottle body reaches a slit-shaped opening in the protective member 7, the PET bottle body cannot pass through the opening and will not fall into the second discharge outlet 24.

[0057] The driving means 5 drives the rotary shafts 31 and 32 at a speed of 200 revolutions per minute. Since the cutting member 8 rotates at high speed at a position several millimeters away from the slit-shaped opening of the protective member 7, clogging of the slit in the protective member 7 does not occur.

[0058] A PET bottle of any size was fed into the PET bottle processing device 1 of this embodiment and operated. The PET bottle was transported by the blade member 4 and cutting member 8 as the rotating shafts 31 and 32 rotated, and in the process, the cap and label were torn off, separating the bottle body from the accessories. The PET bottle body was also partially torn. As the PET bottle body was transported, it was washed with water supplied from the water inlet 21. The accessories separated from the bottle body fell together with the water through the gap between the blade member 4 onto the protective member 7 and were transported to the second outlet 24. Only the washed bottle body was discharged from the first outlet 23, while the water used for washing and the accessories, such as the cap and label, were discharged from the second outlet 24.

[0059] Fig. 4(b) shows a modified example of the cutting member. The cutting member 9 is made of a metal plate with a diameter of 210 mm and a thickness of 9 mm. The cutting member 9 also has eight protrusions 91 and is formed in a windmill shape as a whole.

[0060] While specific examples of the present invention have been described in detail above based on the embodiments, these are merely illustrative and do not limit the scope of the claims. The claimed technology includes various modifications and variations of the specific examples exemplified above. In the examples, the top projections 11 and side projections 12 are arranged at equal intervals. However, as described in the embodiments, the respective intervals can be wider closer to the PET bottle inlet 22 and narrower closer to the first outlet 23. Furthermore, while the inclination angle of the case 2 is 10° in the examples, it can also be greater. Increasing the inclination angle while maintaining the same rotation speed of the rotating shaft increases the residence time of the inserted PET bottle in the case 2, thereby enabling more thorough cleaning and separation of accessories. Furthermore, reducing the angle of the rotating shafts 31 and 32 of the blade member 4 relative to the cross section also increases the residence time of the inserted PET bottle in the case 2, enabling more thorough cleaning and separation of accessories.

[0061] In addition, the dimensions and arrangement of the components of the PET bottle processing device 1, the number of blade members, the shapes of the cutting members, the upper surface protrusions, and the side surface protrusions can be freely changed as long as the original functions are not impaired. In particular, the number of protrusions on the cutting members can be changed from two or more to several dozens in a gear-shaped configuration. [Explanation of symbols]

[0062] 1. PET bottle processing equipment 2 cases 2a Top part 2b Side part 2c Bottom part 4 Blade members 5. Driving means 6. Support for angle adjustment means 7 Protective materials 8,9 Cutting members 10 Base 11 Top protrusion 12 Side protrusion 21 Water inlet 22 PET bottle slot 23 First Outlet 24 Second outlet 31,32 Rotation axis 40 Annular arrangement of blade members 81,91 Protrusion of cutting member

Claims

1. A PET bottle processing device that separates accessories from the bottle body of a PET bottle and crushes it, a substantially rectangular parallelepiped case having an upper surface portion provided with a PET bottle insertion port and a lower surface portion provided with a first discharge port for discharging the bottle body; Two rotating shafts rotatably disposed within the case; a plurality of blade members protruding radially outward from an outer circumferential surface of the rotary shaft; a cutting member fixed to the tip of the blade member; It is equipped with a plurality of the blade members are disposed at equal intervals on the outer circumferential surface at a predetermined distance from the end of the rotating shaft, thereby forming an annular arrangement of the blade members; the annular array of blade members is disposed at equal intervals along the axial direction of the rotating shaft, and the blade members are inclined at a predetermined angle with respect to a cross section in the radial direction of the rotating shaft; The PET bottle processing device is characterized in that the cutting member has a plurality of protrusions with acute angled tips, and the protrusions protrude in the direction of rotation of the rotating shaft.

2. 2. The PET bottle processing device according to claim 1, wherein the case has a top surface on the inside thereof, and the top surface has a plurality of rows of acute-angled triangular projections that protrude downward.

3. 2. The PET bottle processing device according to claim 1, wherein a plurality of rows of acute-angled triangular projections projecting toward the center of the case are arranged on the inside of the side of the case.

4. A water supply port for supplying water is provided on the top surface of the case, 2. The PET bottle processing device according to claim 1, wherein a second outlet for discharging the accessories together with water is provided on the bottom surface of the case.

5. A method for treating PET bottles using the PET bottle treating device according to claim 4, a component separation process in which two rotating shafts inside the case are rotated at high speed, and blade members of the rotating shafts come into contact with the PET bottles, peeling off the labels from the PET bottles, removing the caps, and releasing the contents; A cleaning process in which the PET bottle body is cleaned with cleaning water supplied in a shower from the water supply port. a conveying step in which the PET bottle body is conveyed by the blade member to an upper first outlet, and accessories other than the PET bottle body are conveyed along the lower surface of the case to a lower second outlet together with cleaning water; It is equipped with A PET bottle processing method characterized in that a component separation process, a cleaning process, and a transport process are carried out simultaneously.

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