Shredding system and shredding method

Abstract

To provide a shredding system that reduces wear on the cutter blade and shredding board and easily performs cutting according to the object. [Solution] The shredding system S is a shredding system S for cutting objects, and includes a rotary cutter 1 as a cutter equipped with a blade, and a shredding board 2 against which the blade comes into contact to cut the object, the shredding board 2 having multiple grooves 21, ... for allowing the blade to escape. The rotary cutter 1 is provided with a fall prevention guide 17 that prevents the rotary cutter 1 from falling into the multiple grooves 21, ... of the shredding board 2. This configuration prevents the cutter blade from falling into the grooves 21 of the shredding board 2, reducing wear on the cutting edge and the shredding board 2. Furthermore, stable cutting operations are possible without having to worry about the amount of force used. As a result, consumable costs are reduced and operability is improved.

Description

[Technical Field]

[0001] The present invention relates to a shredding system for foam or non-foam food trays. [Background technology]

[0002] In recent years, plastic and polystyrene foam trays have come to be used as various food containers. Food tray waste after use is collected and disposed of by local governments, but plastic and polystyrene foam food tray waste, while lightweight, is bulky. Therefore, households are encouraged to shred food trays to reduce their volume before disposing of them in the trash.

[0003] Therefore, for example, the shredder in Patent Document 1 discloses that it is equipped with a hopper that incorporates a first pressing means that is installed above the inlet of the shredder body and presses the waste plastic fed in horizontally, and a second pressing means that presses the waste plastic fed in downward toward a rotary cutter built into the shredder body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-75972 Summary of the Invention [Problem to be solved by the invention]

[0005] On the other hand, cutting the tray using a cutter is also an option. However, when cutting the tray using a cutter, a cutting board (shredding board) is used as a base, and when the blade penetrates the target material, it hits the bottom of the board, causing wear on the blade and board. This increases the frequency of replacing the blade and board, leading to increased operating costs. Conversely, it is necessary to adjust the force so that the blade does not hit the board, which creates an issue with operability.

[0006] Therefore, an object of the present invention is to provide a shredding system that reduces wear on the cutter blade and shredding board and can easily perform cutting according to the object. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the shredding system of the present invention is a shredding system for cutting an object, comprising a cutter having a blade, and a shredding board for cutting the object by abutting the blade, the shredding board having a plurality of grooves formed thereon for allowing the blade to escape, and the cutter is provided with a fall prevention guide portion for preventing the cutter from falling into the plurality of grooves of the shredding board. [Effects of the Invention]

[0008] In this way, the shredding system of the present invention comprises a cutter with a blade, and a shredding board for cutting an object by contacting the blade, the shredding board having multiple grooves for the blade to escape, and the cutter is provided with a fall prevention guide that prevents the cutter from falling into the multiple grooves of the shredding board.With this configuration, it is a shredding system that reduces wear on the cutter blade and shredding board and makes it easy to cut an object according to its purpose. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a shredding system. [Figure 2] FIG. 1 is a perspective view of a shredding board. [Figure 3] 1A and 1B are cross-sectional views of a shredder board, where (a) is an overall cross-sectional view and (b) is an enlarged cross-sectional view. [Figure 4] FIG. 2 is a perspective view of a rotary cutter. [Figure 5] FIG. 2 is an enlarged cross-sectional view of the tip of the rotary cutter. [Figure 6] FIG. 10 is an explanatory diagram illustrating the relationship between the rotary cutter, shredding board, and object during cutting. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the components described in the following examples are merely examples and are not intended to limit the technical scope of the present invention. [Example]

[0011] (Overall composition) First, the overall configuration of the shredding system S of the present invention will be described using Figure 1. The shredding system S is a shredding system S for cutting objects such as food trays, and includes a rotary cutter 1 as a cutter with a blade, and a shredding board 2 for cutting objects by bringing the blade into contact with the shredding board 2, the shredding board 2 having multiple grooves 21, ... for allowing the blade to escape. As will be described later, the rotary cutter 1 is provided with a fall prevention guide part 17 that prevents the rotary cutter 1 from falling into the multiple grooves 21, ... of the shredding board 2.

[0012] (Shredded board configuration) Next, the configuration of the shredding board 2 according to the present invention will be described with reference to Figures 2 and 3(a) and (b). As shown in Figures 2 and 3(a) and (b), the shredding board 2 is made of synthetic resin or the like and is formed in a corrugated shape overall, and has a surface 20 on which are provided a plurality of grooves 21, ... each having a predetermined depth h1. In addition, the shredding board 2 has holes 23 for hanging near its edges.

[0013] 3(a)(b), the surface 20 of the shredding board 2 has ten parallel grooves (recesses) 21,..., which are recesses, and nine parallel protrusions 22,..., between them. More specifically, the protrusions 22 are formed as semicircular ridges, and the recessed grooves 21 are formed as rounded rectangular or semicircular grooves. Although not shown, it is preferable that the areas near the start and end of the grooves 21 form inclined surfaces that become shallower toward the start and end, respectively.

[0014] The distance (width) W1 between two adjacent convex portions 22, 22 of the shredding board 2 of this embodiment is narrower than the width W2 of the fall prevention guide portion (17) of the rotary cutter 1, which will be described later. Furthermore, it is preferable that the depth h1 of the groove (concave) 21 be formed to be equal to or greater than the protruding length from the tip 12 of the various disc blades 14 of the rotary cutter 1, so that the groove portion 21 is not damaged.

[0015] Furthermore, as shown in Figures 2 and 3(a) and (b), the shredding board 2 of this embodiment has stopper walls 24 formed at least on the extension lines of the start and end points of the groove portion 21 to prevent the rotary cutter 1 from running away and to prevent damage to a desk or the like. In other words, the stopper walls 24 are formed on the surface 20, surrounding the periphery. The height of the stopper walls 24 is made higher than the height of the protrusions 22 on the surface 20, preventing the danger of the rotary cutter 1 running away.

[0016] On the other hand, the back surface 25 of the shredding board 2 is formed as a flat surface without any recesses or protrusions. The back surface 25 is formed with surrounding legs 26. Because the back surface 25 side is not used during shredding, the height of the legs 26 is arbitrary (it can be lower than the stopper wall 24).

[0017] (Rotary cutter configuration) Next, the configuration of a rotary cutter 1 as a cutter according to the present invention will be described with reference to Figures 4 and 5. As shown in Figures 4 and 5, the rotary cutter 1 comprises a main body 10 consisting of a gripping portion (base) 11 and a tip portion 12, a blade cover 13 slidably attached to the main body 10, a disc-shaped disc blade 14, a shaft 15 that supports the disc blade 14, a fastener 16 that holds the shaft 15, and a fall prevention guide portion 17 that prevents the shredding board 2 from falling between the grooves 21.

[0018] The grip portion 11 is an elongated portion that can be held by the user's hand. The surface of the grip portion 11 is treated with an anti-slip coating to ensure ease of use even during long periods of work. The tip portion 12 is provided with a support structure that holds the disc blade 14.

[0019] The blade cover 13 is a protective member that covers the cutting edge of the disc blade 14 when not in use. The blade cover 13 can be slid or rotated to expose or retract the disc blade 14, thereby enhancing the safety of the rotary cutter 1.

[0020] The disc blade 14 is a disc-shaped steel cutter blade with a sharply ground outer periphery. The disc blade 14 is rotatably supported at the tip 12 of the main body 10, and when the user pushes it forward or pulls it back, it rolls over and cuts the sheet material.

[0021] The disc blade 14 is a consumable item and is therefore removable. That is, a fastener 16 is attached to the shaft 15 of the disc blade 14, and the user can easily replace it with a new blade by sliding the fastener 16 back and forth.

[0022] The tip 12 of the rotary cutter 1 in this embodiment is provided with a fall prevention guide portion 17 that prevents the rotary cutter 1 from falling into the multiple grooves 21, ... of the shredding board 2. The fall prevention guide portion 17 is formed in the shape of a semi-cylindrical shell adjacent to the disc blade 14 (the blade cover 13 adjacent to it), and is installed integrally with the semi-circular arc-shaped tip 12 of the rotary cutter 1 so as to follow the tip 12.

[0023] The width W2 of the fall prevention guide portion 17 in the direction perpendicular to the cutting direction is formed to be wider by a predetermined width α than the width W1 of the groove in the direction perpendicular to the cutting direction of the shredder board 2. For example, if the width W1 of the groove is 8 mm, the width W2 of the fall prevention guide portion 17 can be W1 (8 mm) + α (2 mm) = W2 (10 mm).

[0024] Here, the fall prevention guide portion 17 has been described as being formed integrally with the tip portion 12 of the rotary cutter 1, but this is not limited to this, and it may be an add-on structure that can be fixed with adhesive, or a structure that can be attached detachably using screws or the like.

[0025] (Shredding method) Next, using Figure 6, we will explain the shredding method for cutting (shredding) food trays T made of foamed materials (e.g., PSP, PPF, PE, etc.) or non-foamed materials (e.g., PET, PP) using the shredding system S of this embodiment.

[0026] The shredding method of this embodiment is carried out by carrying out the following steps 1) to 3) in order. 1) Preparing the shredding board and cutter 2) placing the object on the shredding board 3) The process of pressing the blade against the object to cut it Each step will be described below.

[0027] 1) Preparing the shredding board and cutter The shredding board 2 and rotary cutter 1 having the above-described structure are prepared. Furthermore, a food tray T is also prepared as an object to be cut.

[0028] 2) placing the object on the shredding board A food tray T, which is the object to be cut, is placed on the surface 20 of the shredding board 2. When placing the food tray T, the desired cutting direction is determined before placing it.

[0029] 3) The process of pressing the blade against the object to cut it The disc blade 14 of the rotary cutter 1 is pressed against the food tray T to cut it. At this time, as shown in FIG. 6, the width W2 of the fall prevention guide portion 17 is wider than the width W1 between the convex portions 22, preventing the rotary cutter 1 from falling into the groove 21. The tip (outer periphery) of the disc blade 14 is positioned in the space within the groove 21 while cutting the food tray T, and therefore does not wear out. Furthermore, the food tray T itself is bridged between the convex portions 22, and its own rigidity prevents it from getting stuck in the groove 21.

[0030] At this time, when rotary cutter 1 presses food tray T from above, food tray T itself bends in a V shape, so that the cutting position of disc blade 14 is directed closer to the approximate center line between convex portions 22. This positions disc blade 14 further away from the side of groove 21, making it even less susceptible to wear.

[0031] Furthermore, when cutting, the depth to which the rotary cutter 1 penetrates the object varies depending on the angle of the rotary cutter 1 relative to the object. In other words, the distance from the outer surface of the fall prevention guide 17 to the outer edge of the disc blade 14 varies depending on the position of the circumferential angle. Therefore, when the angle of the rotary cutter 1 is shallow, it can smoothly cut foam material, which becomes pinched and increases resistance. On the other hand, when cutting hard materials or objects with steps, such as prepared foods or boxed lunches, it is easier to apply force by holding the rotary cutter 1 upright (at a deep angle). These actions become natural to the body once you get used to them, so they are not difficult once you get the hang of them.

[0032] (effect) Next, the effects achieved by the shredding system S of this embodiment will be listed and explained.

[0033] (1) As described above, the shredding system S of the present invention is a shredding system S for cutting objects, and includes a rotary cutter 1 as a cutter equipped with a blade, and a shredding board 2 against which the blade contacts to cut the object, the shredding board 2 having multiple grooves 21, ... for allowing the blade to escape. The rotary cutter 1 is provided with a fall prevention guide 17 that prevents the rotary cutter 1 from falling into the multiple grooves 21, ... of the shredding board 2. This configuration prevents the cutter blade from falling into the grooves 21 of the shredding board 2, reducing wear on the cutting edge (disc blade 14) and the shredding board 2. Furthermore, stable cutting operations are possible without having to worry about the amount of force used. As a result, consumable costs are reduced and operability is improved.

[0034] (2) Furthermore, because the cutter is a rotary cutter 1 with a disc blade 14, cutting is performed while the disc blade 14 is rolling, allowing for smooth cutting of both straight and curved lines. Furthermore, there is little resistance during cutting, reducing the burden on the worker. In addition, while maintaining the convenience of a typical rotary cutter 1, the fall prevention guide part 17 improves safety and durability.

[0035] (3) Furthermore, the cutter fall prevention guide portion 17 is a semi-cylindrical shell-shaped fall prevention guide portion 17 adjacent to the disc blade 14, which is installed along the semi-circular arc-shaped tip portion 12 of the rotary cutter 1. Therefore, the cutter is stably guided adjacent to the disc blade 14, thereby reliably preventing the cutter from falling into the groove 21. Furthermore, the positional relationship between the blade and the guide is clarified, improving cutting accuracy. In addition, when the guide portion 17 is integrated, it can be realized as a lightweight and compact device without adding any additional parts.

[0036] (4) In addition, stopper walls 24 are formed on the extension lines of the start and end points of the grooves 21 of the shredding board 2, preventing the cutter from running away and protecting the operator and surrounding desks. Furthermore, it prevents operational errors at the end of the cutting edge, making it safer to use. Additionally, the cutting position is stable at the start and end, improving the finishing accuracy.

[0037] (5) Furthermore, the width W2 of the fall prevention guide portion 17 in the direction perpendicular to the cutting direction is formed by a predetermined width wider than the width W1 of the groove 21 in the direction perpendicular to the cutting direction of the shredding board 2, thereby ensuring that the guide will never fall into the groove. Furthermore, due to the dimensional difference with the groove 21, a stable guide effect can be achieved even with manufacturing errors or wear. Additionally, the durability of the cutter and the user's sense of security are improved, improving operability.

[0038] (6) The shredding method of the present invention is a shredding method for cutting an object using any of the shredding systems S described above, and includes the steps of preparing a shredding board 2 and a cutter 1, placing the object, a food tray T, on the shredding board 2, and pressing the blade 14 against the object to cut it, the blade 14 being prevented from falling into the groove 21 by the fall prevention guide 17 of the cutter 1. Therefore, by specifying a specific cutting method using the entire system, highly reproducible operation is possible. Furthermore, lightweight, thin-walled materials such as food trays T can be shredded efficiently and safely. Furthermore, the blade fall prevention effect of the fall prevention guide 17 is directly linked to the cutting method, thereby achieving both operability and safety.

[0039] Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes that do not deviate from the gist of the present invention are included in the present invention.

[0040] For example, in the embodiments, the groove portion 21 is described as being semicircular or rectangular with rounded corners, but this is not limited to this and it can also be designed as appropriate depending on the shape of the blade and the characteristics of the object, such as V-shape or rectangular shape.

[0041] In addition, in the embodiment, the fall prevention guide portion 17 of the rotary cutter 1 is described as being semi-cylindrical shell-shaped, but this is not limited to this and any shape may be used as long as it can prevent the rotary cutter 1 from falling into the groove 21.

[0042] Furthermore, in the embodiment, the stopper wall 24 is formed around the shredding board 2, but this is not limited to this, and it may be provided partially or configured as a detachable member.

[0043] In addition, in the embodiment, a food tray T is used as an example of the object, but this is not limited to this and the invention can also be applied to other lightweight sheet-like materials such as sheet-like resin boards, foam materials, and paper materials. [Explanation of symbols]

[0044] 1 rotary cutter 10 Main body 11 Gripping part (base) 12 Tip 13 Blade cover 14 Disc Blade 15 axes 16 Fasteners 17 Fall prevention guide 2 shredding boards 20 surface 21 Groove 22 Convex part 23 Hanging hole 24 Stopper wall 25 Back side 26 Legs S Shredding System T Object (food tray)

Claims

1. 1. A shredding system for cutting an object, comprising: a cutter having a blade; a shredding board for cutting an object by contacting the blade, the shredding board having a plurality of grooves for allowing the blade to escape; the cutter is a rotary cutter having a disk blade as the blade, The cutter is provided with a fall prevention guide portion that prevents the disc blade of the cutter from contacting the bottom surfaces of the plurality of grooves of the shredding board. Shredding system.

2. The shredding system of claim 1, wherein the fall prevention guide portion of the cutter is a semi-cylindrical shell-shaped fall prevention guide portion adjacent to the disc blade, and is installed along the semi-circular arc-shaped tip of the rotary cutter.

3. The shredding system according to claim 1 , wherein stop walls are formed on the extension lines of the start and end points of the grooves of the shredding board.

4. A shredding system described in any one of claims 1 to 3, wherein the width of the fall prevention guide portion in a direction perpendicular to the cutting direction is formed a predetermined width wider than the width of the groove in a direction perpendicular to the cutting direction of the shredding board.

5. A shredding method for cutting an object using the shredding system described in claim 4, comprising: providing the shredding board and the cutter; placing the object on the shredding board; a cutting step of pressing the blade against the object to cut it, wherein the blade is prevented from falling into the groove by the fall prevention guide portion of the cutter; A shredding method comprising:

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