Industrial waste cutting machine

Abstract

To provide an industrial waste cutter capable of reattaching and replacing cutting blades in a short time, and capable of extremely easily removing and removing industrial waste even when the industrial waste gets stuck between the cutting blades during the work of cutting the industrial waste. [Solution] The device comprises a fixed jaw 1 having fixed base frame portions 11 arranged in parallel along the front-to-back direction at a predetermined interval on both sides in the width direction, a movable jaw 3 having a movable base plate portion 31 that opens and closes to move in and out between the fixed base frame portions 11, 11 of the fixed jaw 1, a rectangular fixed side cutting blade 41 attached to both fixed base frame portions 11, 11 of the fixed jaw 1 with a first bolt 61, a rectangular movable side cutting blade 42 fixed to both sides in the width direction of the movable base plate portion 31 of the movable jaw 3 with a second bolt 62, and a spacer 5 arranged between the movable side cutting blades 42 and fixed to the movable jaw 3 with a third bolt 63.

Description

[Technical Field]

[0001] This invention relates to an industrial waste cutter that cuts industrial waste such as synthetic resin products (e.g., plastic, vinyl, rubber), wooden furniture, and tires into small pieces, and that can quickly reattach and replace cutting blades, and that can very easily remove industrial waste even if it gets stuck between the cutting blades during the cutting work. [Background technology]

[0002] In recent years, industrial waste has become extremely diverse, encompassing a wide range of types, including industrial products, old materials, and household items such as old furniture, which are being discarded in large quantities. In order to efficiently dispose of this industrial waste, it is necessary to cut it into several small pieces. Various types of cutting devices have been developed to cut industrial waste into small pieces. Examples of such industrial waste cutting machines include Patent Document 1 and Patent Document 2. These patent documents have a common feature in that fixed and movable cutting blades cross each other to cut the material to be cut. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-266369 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-307646 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional industrial waste cutters disclosed in Patent Documents 1 and 2, etc., have various problems as described below. First, the configuration of the fixed jaw and movable jaw, which are structurally common to Patent Documents 1 and 2, is shown in Figure 10. For ease of explanation, the configurations disclosed in Patent Documents 1 and 2, etc., will be referred to as "fixed jaw a," "movable jaw b," and "cutting blade c." As the movable jaw b rotates on a vertical plane relative to the fixed jaw a, the respective cutting blades c provided on the fixed jaw a and the movable jaw b cross each other to cut the industrial waste material to be cut (see Figure 10(A)).

[0005] In a typical industrial waste cutter, both the fixed and movable cutting blades c are rectangular, specifically brick- or strip-shaped. The cutting blades are attached to the fixed and movable sides so that their cross sections are rectangular and perpendicular to the longitudinal direction, with their long sides aligned vertically. When cutting an object, the fixed and movable cutting blades c, c intersect with each other at their surfaces, and the cutting blades c, c are in approximate surface contact during the cutting operation.

[0006] The cutting blades c used in typical industrial waste cutters are rectangular metal blades, specifically strip-shaped or brick-shaped. The cutting blades c attached to the fixed jaw a and the movable jaw b wear down with the cutting process, dulling their sharpness and making it impossible to cut the material cleanly. Therefore, the rectangular cutting blades must be removed from the fixed jaw a and the movable jaw b, then rotated to change the corners that will be cut. Furthermore, once all corners of the fixed and movable cutting blades have been used, the entire cutting blade c must be replaced with a new one.

[0007] The rectangular parallelepiped cutting blade c is fixed to both the fixed and movable frames with bolts so that the long sides of the rectangular cross section perpendicular to the longitudinal direction are in the up-down (vertical) direction. The bolt that fixes the movable cutting blade has a horizontal screw axis and the bolt head is on the inside of the movable frame.

[0008] Therefore, in the case of a type that screws in from the inside of the movable frame having a roughly U-shaped portion as shown in Figure 10, the bolts are particularly difficult to remove, and even if the bolts are loosened, the movable cutting blade may become firmly embedded in the cutting blade mounting recess in the frame and may not be easily removed. The reason why the cutting blade is difficult to remove from the frame is thought to be that the shape of the cutting blade mounting recess in the frame becomes deformed over a long period of cutting work, causing the frame mounting recess and the cutting blade to press firmly against each other.

[0009] Another method is to strike the edges of the movable cutting blades c to knock them out little by little, but this takes a long time, typically more than an hour, to remove one of the movable cutting blades. Another method involves loosening the bolts slightly and using a long rod such as a crowbar to press against the bolt heads using a lever to gradually push them out, but this also takes a long time (about an hour or more) to remove one of the movable cutting blades c. Using a small jack also makes it possible to remove the movable cutting blades in a short time (about 15 minutes), but the problem is that small jacks are extremely expensive.

[0010] Next, as mentioned above, when the fixed and movable cutting blades c, c cut the workpiece, the cutting blades c, c are in surface contact with each other during the cutting operation, so when the workpiece is cut by the movable cutting blade c and the fixed cutting blade c, the workpiece may become pinched between the cutting blades and become unable to be removed, as shown in Figure 10(B). This may cause the fixed jaw and movable jaw to lock, causing the cutting operation to stop.

[0011] Furthermore, it is extremely difficult and not easy to remove the workpiece from the cutting blade c of the fixed jaw a and the cutting blade c of the movable jaw b. One way to solve this problem is to heat the trapped workpiece with gas to melt it, but this also carries the risk of melting the cutting blade c and the surrounding area. Furthermore, removing the cutting blade from the movable jaw is one way to remove a workpiece that is stuck between the two cutting blades, but forcing it out by hitting it with a hammer or by hitting the stuck cutting blade with the force of the shovel risks damaging the cutting blade itself or the shovel body.

[0012] When the cutting blade wears out and becomes dull due to cutting work, not only does it reduce the efficiency of the cutting work, but it also puts a greater strain on the industrial waste cutter and the excavator itself. Furthermore, if the cutting blade c continues to be used while it is worn out, in the case of a type with a built-in hydraulic mechanism, problems such as oil leaks and cracks will occur in the hydraulic cylinder due to an increase in oil temperature.

[0013] Furthermore, mechanical cutting machines that do not have built-in hydraulic cylinders can cause various problems such as broken pins, cracked frames, and broken shovel arms. However, as mentioned above, removing the cutting blade c and replacing or reversing it is an extremely difficult and tedious task, so users tend not to do it.

[0014] To provide an industrial waste cutter which prevents a situation in which an object to be cut gets stuck between the cutting blades and clogs, reducing the efficiency of the cutting work, when cutting industrial waste, and which can easily remove the object even if it gets stuck between the cutting blades, and which can also easily and quickly change and replace the cutting blades. [Means for solving the problem]

[0015] Therefore, the inventor has conducted extensive research to solve the above problem, and has found that the invention of claim 1 can be realized by attaching a predetermined distance to both sides in the width direction. Arranged in parallel and along the front-to-back directiona movable jaw having a fixed base frame portion disposed between the fixed jaws; a movable jaw having a movable base plate portion that opens and closes so as to enter and exit between the fixed base frame portions of the fixed jaws; a rectangular parallelepiped fixed-side cutting blade attached to the fixed base frame portions of the fixed jaws with a first bolt; a rectangular parallelepiped movable-side cutting blade fixed to both sides of the movable base plate portion of the movable jaw in the width direction with a second bolt; and a spacer disposed between the movable-side cutting blades and fixed to the movable jaw with a third bolt, The movable-side cutting blades are arranged in parallel along the front-rear direction on both sides in the width direction of the fixed jaw and are fixed to the movable base plate portion by the second bolts with the long side of the cross section perpendicular to the longitudinal direction of the movable-side cutting blade horizontal, the spacer is arranged between the movable-side cutting blades in the width direction and fixed by the third bolt, and the fixed-side cutting blades attached to both fixed base frame portions of the fixed jaw are inclined upwardly as viewed from the front of the fixed jaw toward the inside in the width direction of the fixed jaw, so that the fixed-side cutting blade and the movable-side cutting blade intersect when opening and closing. The spacer has a convex cross section perpendicular to the longitudinal direction, and pressing pieces are formed on both sides of the lower width direction, and the inner sides of the movable cutting blades are fixed in a pressed state by the pressing pieces, and the second bolt and the third bolt are each vertical, and their heads are located on the upper side. The above-mentioned problems have been solved by providing an industrial waste cutting machine characterized by the above.

[0016] Claim 2 The invention of the present invention is an industrial waste cutting machine according to claim 1, The fixed base frames of the fixed jaws are configured to have a V-shaped cross section when viewed from the front. The above-mentioned problems have been solved by providing an industrial waste cutting machine characterized by the above.

[0017] Claim 3 The invention of the present invention is an industrial waste cutting machine according to claim 1, The fixed jaws have a cross section that is V-shaped in the upper part of the vertical middle when viewed from the front. The above-mentioned problems have been solved by providing an industrial waste cutting machine characterized by the above.

[0018] Claim 4 The invention of the present invention is an industrial waste cutting machine according to claim 1, The movable jaw is rotated by a hydraulic cylinder provided inside the main body outer casing which is integrally formed with the fixed jaw. The above-mentioned problem has been solved by providing an industrial waste cutting machine characterized by the above. 5 The invention of the present invention is an industrial waste cutting machine according to claim 1, The movable jaw is moved by a hydraulic cylinder provided on the boom side of the hydraulic excavator and a link operated by the hydraulic cylinder. The above-mentioned problems have been solved by providing an industrial waste cutting machine characterized by the above. [Effects of the Invention]

[0019] The invention of claim 1 is configured so that when cutting industrial waste, the material can be cut reliably and the material is less likely to become stuck between the fixed cutting blade and the movable cutting blade, greatly improving the efficiency of the cutting work of industrial waste. Furthermore, even if the material becomes stuck between the fixed cutting blade and the movable cutting blade and cutting work becomes impossible, the stuck material can be removed very easily and quickly.

[0020] To explain the above effect in detail, the fixed cutting blade of the fixed jaw is configured to be inclined upward and inward in the width direction of the fixed jaw when viewed from the front of the fixed jaw, and when the fixed and movable jaws open and close and the fixed and movable cutting blades intersect, the fixed and movable cutting blades are in line contact. As a result, when the fixed and movable cutting blades cut an object, a shear force acts as a concentrated load on the object at the corners of the fixed cutting blade that are in contact with or close to the movable cutting blade, allowing the object to be cut cleanly.

[0021] Furthermore, since the fixed-side cutting blade and the movable-side cutting blade are in line contact during cutting, the workpiece is less likely to become caught between the fixed-side cutting blade and the movable-side cutting blade, minimizing the occurrence of the workpiece becoming stuck between the fixed-side cutting blade and the movable-side cutting blade. The movable jaw is equipped with rectangular parallelepiped movable cutting blades fixed to both widthwise sides of the movable base plate by second bolts, and a spacer disposed between the movable cutting blades and fixed to the movable jaw by a third bolt, and the movable cutting blades are fixed to the movable base plate by the second bolts on both widthwise sides of the movable base plate of the movable jaw with the long sides of their cross sections perpendicular to the longitudinal direction horizontal, and the spacer is disposed between the both widthwise movable cutting blades and fixed by the third bolt.

[0022] With the above configuration, even if an object to be cut becomes jammed between the fixed and movable cutting blades and the cutting operation between the fixed and movable jaws stops, the movable cutting blades on both sides in the width direction can be extremely easily removed from the movable base plate by loosening the third bolt from the movable base plate, removing the spacer, and then loosening the second bolt. This allows for easy and quick removal of the object to be cut that has become jammed between the fixed and movable cutting blades. Furthermore, the movable cutting blade can be easily replaced on the movable jaw side. Furthermore, in the invention of claim 1, a pressing piece is formed on the spacer, which can press down on a part of the movable cutting blade, thereby enabling the movable cutting blade to be fixed more firmly to the movable base plate portion.

[0023] Claim 2 In the invention, the fixed base frames of the fixed jaw are configured to have a V-shaped cross section when viewed from the front, which makes it extremely easy to set the fixed side cutting blades on both sides of the width of the fixed jaw to be approximately V-shaped when viewed from the front.

[0024] Claim 3 In the invention of claim 1, the section of each of the fixed base frames of the fixed jaw above the middle in the vertical direction when viewed from the front is V-shaped, thereby simplifying the structure. 4 In the invention of claim 1, the movable jaw is configured to be movable by a hydraulic cylinder provided inside the outer casing of the main body, thereby improving workability. 5 In this invention, the movable jaw is movable by a hydraulic cylinder provided on the boom side of the hydraulic excavator (or backhoe) and a link operated by the hydraulic cylinder, making it possible to provide an industrial waste cutting machine at a low price. [Brief explanation of the drawings]

[0025] [Figure 1] (A) is an oblique view of the industrial waste cutting machine of the present invention when the movable jaw is open relative to the fixed jaw, (B) is a side view of the present invention when the movable jaw is open relative to the fixed jaw, (C) is an enlarged oblique view of part (α) of (B), (D) is an enlarged side view of part (α) of (B), and (E) is a view taken along the P2-P2 arrow of (D). [Figure 2] 1A is a view taken along the line P2-P2 in FIG. 1B, and FIG. 1B is a perspective view of a spacer. [Figure 3] 1(A) is an end view taken along the arrow P1-P1 in FIG. 1(B), (B) is an end view of (A) in an exploded state, and (C) is an end view of the main part with the fixed jaw and the fixed-side cutting blade separated. [Figure 4] 1A and 1B are longitudinal sectional views seen from the front showing the process of cutting an object to be cut using the industrial waste cutter of the present invention, and 1C is an enlarged view of part β of 1B. [Figure 5] 10A to 10C are longitudinal sectional end views seen from the front showing the process of removing an object to be cut when the object is stuck between the fixed cutting blade and the movable cutting blade using the industrial waste cutting machine of the present invention. [Figure 6] FIG. 10 is a longitudinal sectional end view seen from the front showing another embodiment of the fixed jaw in the industrial waste cutter of the present invention. [Figure 7] FIG. 1 is a side view of an industrial waste cutter according to the present invention, in which a movable jaw is rotated by a hydraulic cylinder and a link portion on the boom side of a hydraulic excavator. [Figure 8] FIG. 10 is a longitudinal sectional end view seen from the front of another embodiment 1 of the present invention. [Figure 9] FIG. 10 is a longitudinal sectional end view seen from the front of yet another embodiment 2 of the present invention. [Figure 10] 1A is a longitudinal cross-sectional view of a conventional industrial waste cutter as seen from the front, and FIG. 1B is a longitudinal cross-sectional view of a conventional industrial waste cutter in a state where the material to be cut has become stuck between the fixed blade and the movable blade. DETAILED DESCRIPTION OF THE INVENTION

[0026] The main embodiments of the present invention will be described below with reference to the drawings. As shown in Fig. 1, the present invention is mainly configured to include a fixed jaw 1, a main body outer casing 2, a movable jaw 3, a fixed-side cutting blade 41, a movable-side cutting blade 42, and a spacer 5. The fixed jaw 1 is integrally connected to the main body outer casing 2, which will be described later, and the movable jaw 3 is pivotally connected to the main body outer casing 2 so that it can swing freely, and the movable jaw 3 can open and close freely above the fixed jaw 1. The industrial waste cutting device of the present invention is attached to and operated at the tip of a boom 81 of a construction vehicle such as a hydraulic excavator.

[0027] In the description of the present invention, for convenience, the front-rear direction and width direction are set. The conditions for setting the front-rear direction and width direction are that the fixed jaw 1 is positioned at the bottom and the movable jaw 3 is positioned at the top, as shown in Figures 1(A) and 1(B). The front-rear direction of the industrial waste cutter is the direction in which the fixed jaw 1 and the main body outer casing 2 are continuous when viewed from the side, as shown in Figures 1(A) and 1(B), with the fixed jaw 1 side being the front side and the main body outer casing 2 side being the rear side.

[0028] In other words, in the fore-and-aft direction of the industrial waste cutter, the side where the fixed jaw 1 and movable jaw 3 cut the industrial waste is the front side, and the side where it is attached to the tip of the boom of a construction vehicle such as a hydraulic excavator (backhoe) is the rear side (see Figure 7). Also, the width direction of the industrial waste cutter is the direction perpendicular to the fore-and-aft direction on a horizontal plane. The fore-and-aft directions and width directions of the fixed-side cutting blade 41 and the movable-side cutting blade 42 shall follow the fore-and-aft directions and width directions of the industrial waste cutter.

[0029] Furthermore, the front-to-rear direction is referred to as the X direction, and the width direction is referred to as the Y direction. The up-to-down direction is a direction perpendicular to the front-to-rear direction (X direction) on a vertical plane. In the description of the present invention, the up-to-down direction is sometimes referred to as the height direction. In the description of the present invention, the front-to-rear direction may be replaced with the longitudinal direction, and the longitudinal direction (X direction) may also be used hereinafter.

[0030] Here, industrial waste includes not only waste generated at manufacturing sites such as factories or construction sites, but also bulky waste such as electrical appliances and furniture generated by ordinary households and ordinary businesses. Examples include vinyl sheeting, PVC pipes, corrugated pipes, wallpaper, plumbing hoses, insulation materials, carpets, nets, electrical wires, tires, tatami mats, tin plates, glass wool, etc.

[0031] The fixed jaw 1 has two fixed base frame portions 11, 11 and one tip frame portion 12. The tip frame portion 12 is arranged at the tip of the fixed jaw 1 in the front-to-rear direction (X direction) so as to be perpendicular to both fixed base frame portions 11, 11. Both fixed base frame portions 11, 11 and the tip frame portion 12 form a roughly U-shape when viewed from above (see Figure 2(A)).

[0032] The two fixed base frame portions 11, 11 are arranged side by side and parallel to each other along the front-to-rear direction (X direction) at a predetermined interval on both sides of the width direction (Y direction) of the fixed jaw 1. Both fixed base frame portions 11, 11 are made of metal plates, and their upper edges are formed into a roughly flattened "V" shape along the longitudinal direction (X direction) (see Figures 1(A) and (B)).

[0033] Mounting recesses 11a, 11a are formed adjacent to each other in series along the longitudinal direction (X direction) on two opposing inclined sides of the flattened V-shaped portion at the upper end of the fixed base frame 11 (see FIGS. 1(A) and 2(A)). Fixed-side cutting blades 41, 41 are mounted adjacent to each other in series along the longitudinal direction (X direction) in the two adjacent, in-line mounting recesses 11a, 11a. The mounting recesses 11a are formed as approximately rectangular depressions on the inner surface of the fixed base frame 11, and are designed to properly accommodate the fixed-side cutting blade 41 (see FIGS. 1(A), 2(A), and 4(A)).

[0034] The mounting recesses 11a are formed on the inner sides of the fixed base frames 11, 11, respectively, and the mounting recesses 11a, 11a of the fixed base frames 11, 11 are configured to face each other in the width direction (Y direction) of the fixed jaw 1. Therefore, the fixed-side cutting blades 41, 41 attached to the mounting recesses 11a, 11a are configured to face each other on the inner sides in the width direction (Y direction) of the fixed base frames 11, 11 on both sides of the fixed jaw 1 in the width direction (Y direction) (see Figures 2(A) and 3(A)).

[0035] The fixed-side cutting blade 41 is made of metal and has a rectangular parallelepiped shape, a relatively thick band plate shape, or a brick shape. All six sides of the rectangular parallelepiped are rectangular. The cross section of the fixed-side cutting blade 41 perpendicular to the longitudinal direction (X direction) is generally rectangular, but may also have a rectangular shape that approximates a square, resulting in a roughly square rod shape. The fixed-side cutting blade 41 is embedded in the two mounting recesses 11a, 11a along the longitudinal direction (X direction) of each fixed base frame 11, forming a flattened V-shape and is fixed to the fixed base frame 11 via first bolts 61 (see FIGS. 1(A), 3(A), and (C)).

[0036] At this time, through holes 11b, 11b, ... through which the screw shafts of the first bolts 61 are inserted are drilled in the mounting recess 11a of the fixed base frame 11, and multiple screw holes 41a, 41a, ... are formed at equal intervals in each fixed cutting blade 41 (see FIG. 3(C)). Specifically, three or four through holes 11b, 11b, ... are formed in each mounting recess 11a, and the number of screw holes 4a, 4a, ... in each fixed cutting blade 41 is equal to the number of through holes 11b. The fixed cutting blade 41 attached to the fixed jaw 1 is configured so that, in a cross section perpendicular to its longitudinal direction (X direction), the side surface belonging to the long side 41m is aligned substantially vertically and the side surface belonging to the short side 41n is aligned substantially horizontally, and is inclined inward in the width direction (Y direction) of the fixed jaw 1 (see FIGS. 3(A), 4(A), and 4(B)).

[0037] Specifically, the fixed-side cutting blades 41, 41 attached to the fixed base frame portions 11, 11 of the fixed jaw 1 are configured so that the upper sides thereof are inclined inward in the width direction (Y direction) of the fixed jaw 1 when viewed from the front side in the front-rear direction (X direction) of the fixed jaw 1. More specifically, the upper sides of the long side 41m of the fixed-side cutting blade 41 in the width direction (Y direction) of the fixed jaw 1 and the surfaces belonging to it are configured so that the upper sides are inclined inward in the width direction (Y direction) of the fixed jaw 1 by an angle θ with respect to the vertical reference axis Lv (see Figures 3(A), 4(A), and (B)).

[0038] The angle θ is about 1 to 5 degrees, and is often set to 2 to 3 degrees. In this way, the fixed-side cutting blades 41, 41 on both sides of the width direction (Y direction) of the fixed jaw 1 are inclined inward by the angle θ, so that the fixed-side cutting blades 41, 41 attached to both sides of the width direction (Y direction) of the fixed jaw 1 are configured in a roughly V-shape when viewed from the front in the longitudinal direction (X direction) (see Figures 3(A), 4(A), and (B)).

[0039] In order to make the fixed-side cutting blades 41, 41 on both sides in the width direction (Y direction) approximately V-shaped, the cross-sectional shape of the fixed base frame parts 11, 11 on both sides in the width direction (Y direction) perpendicular to the longitudinal direction (X direction) is configured to be approximately V-shaped when viewed from the front in the front-rear direction (X direction). By doing so, the mounting recesses 11a, 11a formed in the fixed base frame parts 11, 11 on both sides in the width direction (Y direction) are also inclined at an angle θ (see Figures 3(A), 4(A), and (B)).

[0040] In another embodiment, the fixed base frames 11, 11 on both widthwise sides of the fixed jaw 1 are inclined inward in the width direction (Y direction) of the fixed jaw 1 only near the upper ends where the mounting recesses 11a are formed when viewed from the front, so that the cross section of the fixed jaw 1 is V-shaped when viewed from the front side, and the lower portions of the fixed base frames 11, 11, excluding the upper end portions, are vertically parallel (see Figure 6). In this embodiment, the fixed base frame 11 is divided into an upper portion 11u and a lower portion 11d, and an angle-adjusting spacer 11m is positioned between the upper portion 11u and the lower portion 11d and fixed by welding or other means. The angle-adjusting spacer 11m is a flat triangular block having an angle θ.

[0041] Both fixed-side cutting blades 41, 41 are inclined inward by an angle θ, forming a V-shaped cross section when viewed from the front side of the fixed jaw 1, so that when the fixed-side cutting blade 41 intersects with a movable-side cutting blade 42 of the movable jaw 3 (described later), the fixed-side cutting blade 41 intersects with the movable-side cutting blade 42 in a state of approximate linear contact. As a result, when the fixed-side cutting blade 41 intersects with the movable-side cutting blade 42 to perform cutting when the fixed jaw 1 and the movable jaw 3 are opened and closed, the shearing force becomes a concentrated load state, resulting in extremely excellent cutting performance for the workpiece W (see Figure 4(C)).

[0042] The fixed-side cutting blades 41, 41 are attached and fixed by first bolts 61 to the mounting recesses 11a, 11a of the fixed base frames 11, 11 on both sides of the fixed jaw 1 in the width direction (Y direction). The fixed jaw 1 has its corners exposed from the mounting recesses 11a, 11a (see FIGS. 1A and 2A). The heads 61a of the first bolts 61 are located on the outer side of the fixed base frames 11, 11 in the width direction (Y direction). The amount of protrusion of the fixed-side cutting blade 41 from the mounting recess 11a of the fixed base frame 11 can be finely adjusted by using a thin metal spacer between the mounting recess 11a and the fixed-side cutting blade 41.

[0043] A gap S exists between the fixed base frame portions 11, 11 on both sides of the fixed jaw 1 in the width direction (Y direction) and the fixed cutting blades 41, 41 attached and fixed to the fixed base frame portions 11, 11 (see Figures 1(A), 2(A), 4(A), (B), etc.). The gap S is a substantially rectangular space, and the movable jaw 3 is configured to move in and out of the gap S by rotating on a vertical plane.

[0044] Next, the main body outer casing 2 is formed adjacent to the fixed jaw 1 in the longitudinal direction (X direction), and the main body outer casing 2 and the fixed jaw 1 are actually formed as a single unit (see Figs. 1(A), (B), and 7). The main body outer casing 2 is shaped like a cabinet and is made up of two side plates 21, 21 in the width direction (Y direction) and a connecting side plate 22 that connects the two side plates 21, 21 together, forming a cabinet with an internal space.

[0045] Therefore, the fixed base frame portions 11, 11 of the fixed jaw 1 and the side plates 21, 21 of the main body outer casing 2 are integral and made of the same metal plate material. The main body outer casing 2 is the part that connects the industrial waste cutting machine to the tip of the boom 81 of the hydraulic excavator, and also serves to store actuators such as the hydraulic cylinder 7 and other necessary equipment inside (see Figure 1(B)).

[0046] Next, the movable jaw 3 has a movable base plate portion 31 and a movable housing portion 32. The movable jaw 3 is configured to rotate up and down on a vertical plane, and to move in and out by inserting into the gap S between the fixed base frame portions 11, 11 (see Fig. 1(B)). The movable base plate portion 31 is formed in a substantially flat plate shape, and has a bent portion formed in the middle along the longitudinal direction (X direction), with the bent portion forming a substantially V-shaped or flattened triangular mountain shape (see Figs. 1(B) and (D)).

[0047] The V-shaped portion of the movable base plate portion 31 corresponds to the flat V-shaped portions of both fixed base frame portions 11, 11 of the fixed jaw 1, and is configured so that during cutting operations, when the movable jaw 3 rotates and is inserted into the gap S of the fixed jaw 1, the positions of the valley (lowest part) of the flat V-shape of the fixed jaw 1 and the apex (top part) of the V-shaped portion of the movable jaw 3 approximately coincide (see Figures 1(A) and (B)).

[0048] A movable housing unit 32 is disposed on the upper surface of the movable base plate unit 31 (see FIGS. 1(D), 3(A), and (B)). The movable housing unit 32 is composed of two movable side plates 32a, 32a arranged in parallel along the longitudinal direction (X direction), and is structured so that the movable side plates 32a and the movable base plate unit 31 reinforce each other. In addition, triangular plate-shaped ribs 36 are disposed and fixed at predetermined intervals at the outer corners of the movable base plate unit 31 and the movable side plates 32a, 32a of the movable housing unit 32 by a fixing means such as welding (see FIGS. 1, 3(A), and (B)).

[0049] A rotation base 33 serving as a through-hole is formed at the rear end of the movable jaw 3 in the front-to-rear direction (X direction), and is pivotally connected via a pivot shaft to the pivot part 23 formed in the main body outer casing 2 (see Figs. 1(A) and (B)). The movable jaw 3 also has a cylinder connecting part 34 formed therein, which is pivotally connected to the piston rod of a hydraulic cylinder 7 mounted inside the main body outer casing 2, and the movable jaw 3 is rotated using the hydraulic cylinder 7 as a drive source (see Fig. 1(B)).

[0050] A movable cutting blade 42 and a spacer 5 are attached to the underside of the movable base plate portion 31 of the movable jaw 3 (see FIGS. 1(C), 2(A), 3(A), and (B)). The movable cutting blade 42 is roughly rectangular parallelepiped in shape, similar to the fixed cutting blade 41 on the fixed jaw 1 side, and is formed in the shape of a brick or a strip of appropriate thickness. The movable cutting blades 42, 42 are arranged and fixed in parallel along the longitudinal direction (X direction) on the underside of the movable base plate portion 31, on the front side in the front-to-rear direction (X direction) and on both sides in the width direction (Y direction).

[0051] More specifically, two movable cutting blades 42, 42 are arranged in series and fixed to the V-shaped portion on both sides of the width direction (Y direction) of the movable base plate 31 (see Figs. 1(A), (C), and (E)). A plurality of through holes 31 a, 31 a, ... are drilled at equal intervals along the longitudinal direction (X direction) on both sides of the width direction (Y direction) of the movable base plate 31 (see Fig. 3(B)).

[0052] Furthermore, the movable-side cutting blade 42 has a plurality of screw holes 42a, 42a, ... formed at equal intervals on a surface belonging to the long side 42m at the center of the width direction (Y direction) of the long side 42m from this center part along the longitudinal direction (X direction). Specifically, three or four through holes 31a, 31a, ... are formed in the movable base plate portion 31, and the number of screw holes 42a formed in the movable-side cutting blade 42 is equal to the number of the through holes 31a.

[0053] The movable cutting blades 42 attached to both sides of the movable base plate 31 in the width direction (Y direction) are fixed so that the surface of the long side 42m in a rectangular cross section perpendicular to the longitudinal direction (X direction) is horizontal (see FIGS. 3(A) and 3(B)). One end of the movable cutting blade 42 in the width direction (Y direction) protrudes outward in the width direction (Y direction) from the edge of the movable base plate 31 in the width direction (Y direction). In other words, one edge of the movable cutting blade 42 in the width direction (Y direction) is the part involved in cutting the workpiece W. The movable cutting blades 42, 42 attached to both sides of the movable base plate 31 in the width direction (Y direction) are configured symmetrically so that the amount of protrusion from both ends of the movable base plate 31 in the width direction (Y direction) is the same.

[0054] Second bolts 62 are used to attach and fix the movable cutting blades 42 to the movable base plate 31, and the bolt shafts of the second bolts 62 pass through the through holes 31a and screw into the screw holes 42a, thereby fixing the movable cutting blade 42 to the movable base plate 31 (see FIGS. 3(A) and (B)). Here, the second bolts 62 are vertical when the movable cutting blade 42 is fixed to the movable base plate 31, and the heads 62a of the second bolts 62 are located on the upper surface of the movable base plate 31 (see FIGS. 1(D) and (E), 3(A) and (B)).

[0055] Next, a spacer 5 is disposed in the gap formed between the surfaces of the inner short sides 41n of the movable cutting blades 42, 42 attached and fixed to both sides of the movable base plate 31 in the width direction (Y direction) (see FIGS. 2(B), 3(A), and 3(B)). The spacer 5 has a convex cross section perpendicular to the longitudinal direction (X direction) and is composed of a spacer portion 51 and a pressing piece 52. The pressing pieces 52, 52 protrude horizontally from the lower end of the spacer portion 51, which has a square or rectangular cross section, on both sides of the width direction (Y direction). The length of the spacer 5 in the longitudinal direction (X direction) is approximately the same as the length of the movable cutting blade 42 in the longitudinal direction (X direction), and multiple screw holes 51a, 51a... are formed in the vertical direction at equal intervals along the longitudinal direction (X direction) (see FIGS. 2(A) and 3(B)).

[0056] Furthermore, through holes 31b, 31b, ... are formed along the longitudinal direction (X direction) at the center of the width direction (Y direction) of the movable base plate 31. The spacer 5 is arranged on the underside of the movable base plate 31, the screw shaft of the third bolt 63 passes through the through hole 31b of the movable base plate 31 and threadably engages with the screw hole 51a, the spacer portion 51 of the spacer 5 is arranged between the opposing inner surfaces of the two movable cutting blades 42, 42 fixed to the underside of the movable base plate 31 on both sides in the width direction (Y direction), and the presser pieces 52, 52 on both sides in the width direction (Y direction) press down the undersides of the two movable cutting blades 42, 42, thereby reliably fixing the two movable cutting blades 42, 42 fixed to both sides in the width direction (Y direction) of the movable base plate 31 (see FIG. 3(A)).

[0057] Next, the cutting of an industrial waste object W using the industrial waste cutting machine of the present invention will be described (see FIG. 4). The object W that is most difficult for a general industrial waste cutting machine to cut is a soft material. Although a hard material object W is hard, it is brittle and easily breaks into pieces when an external force is applied, but a soft material tends to get tangled around the intersecting upper and lower cutting blades when cutting. In the present invention, the cutting of such a difficult soft material object W will be described.

[0058] First, a used blue sheet is used as the soft material object W, and the blue sheet object W is placed between the fixed jaw 1 and the movable jaw 3 (see FIG. 4(A)). Next, when the movable jaw 3 is inserted into the gap S of the fixed jaw 1 and the fixed-side cutting blade 41 and the movable-side cutting blade 42 intersect, the contact points between the fixed-side cutting blade 41 and the movable-side cutting blade 42 are in a state of approximate line contact (see FIG. 4(B)). As a result, when the soft material object W is cut by the fixed-side cutting blade 41 and the movable-side cutting blade 42, a shear force acts as a concentrated load on the object W at the corners of the fixed-side cutting blade 41 that are in contact with or close to the movable-side cutting blade 42, allowing the object W to be cut cleanly.

[0059] Furthermore, the fixed-side cutting blade 41 and the movable-side cutting blade 42 are not in surface contact with each other during cutting operations, but are in approximate line contact, which results in gaps being created in areas other than the line contact points, making it difficult for the workpiece W to become caught between the fixed-side cutting blade 41 and the movable-side cutting blade 42, thereby minimizing the chance of the workpiece W getting stuck between the fixed-side cutting blade 41 and the movable-side cutting blade 42 (see Figure 4(C)).

[0060] Next, a method for releasing the situation where an industrial waste material W becomes caught and jammed between the fixed cutting blade 41 and the movable cutting blade 42 of the industrial waste cutting machine of the present invention, causing the fixed jaw 1 and the movable jaw 3 to stop moving and cutting work to stop will be described (see FIG. 5). When the material W becomes tangled and jammed between the fixed cutting blade 41 and the movable cutting blade 42 (see FIG. 5(A)), the work is stopped.

[0061] Then, first, the third bolt 63 is loosened from the cutting blade movable base plate portion 31 to remove the spacer 5 (see FIG. 5(B)). At this time, the head 63a of the third bolt 63 is located on the upper surface side of the movable base plate portion 31, so it can be loosened very easily with a tool such as a socket wrench, and the spacer 5 can be very easily removed from the movable base plate portion 31. This releases both movable cutting blades 42, 42 from the spacer 5.

[0062] Next, the movable cutting blades 42, 42 on both sides in the width direction (Y direction) can be removed from the movable base plate 31 by loosening the second bolt (see FIG. 5(C)). This allows for easy and quick removal of the workpiece W that has become jammed between the fixed cutting blade 41 and the movable cutting blade 42. Similarly, the movable cutting blade 42 in the movable jaw 3 can be replaced or changed very easily and quickly by removing the spacer 5 from the movable base plate 31.

[0063] The industrial waste cutter shown in FIG. 7 is an embodiment of the present invention in which the main body casing 2 is not provided with a hydraulic cylinder 7 for rotating the movable jaw 3. In this embodiment, the industrial waste cutter itself does not rotate the movable jaw 3. The movable jaw 3 rotates by an external force. Specifically, the movable jaw 3 has a rotation base 33 that is pivotally connected to the main body casing 2, and a link connection part 35. A hydraulic excavator (also called a backhoe) is provided with a hydraulic cylinder 82 attached to a boom 81 and a link 83 that is operated by the hydraulic cylinder 82. The link connection part 35 of the movable jaw 3 of the industrial waste cutter is connected to the link 83 on the boom 81 side, and the movable jaw 3 rotates due to the hydraulic cylinder 82 attached to the boom 81.

[0064] 8 shows another embodiment 1 of the industrial waste cutter of the present invention. In this embodiment, the movable jaw 3 and the movable-side cutting blade 42 have the same configuration as the movable jaw 3 and the movable-side cutting blade 42 in the main embodiment described above, and the fixed jaw 1 and the fixed-side cutting blade 41 are parallel in the width direction (Y direction).

[0065] To summarize the configuration of the above-mentioned alternative embodiment 1, this is an industrial waste cutting machine characterized by "having a movable jaw 3 having a movable base plate portion 31 that opens and closes to move in and out between the two fixed base frame portions 11, 11 of the fixed jaw 1, and having a rectangular movable cutting blade 42 fixed by second bolts 62 on both sides of the width direction (Y direction) of the movable base plate portion 31 of the movable jaw 3, and a spacer 5 arranged between the two movable cutting blades 42, 42 and fixed to the movable jaw 3 by third bolts 63."

[0066] 9 shows yet another embodiment 2 of the industrial waste cutter of the present invention. In this embodiment, the fixed-side cutting blades 41, 41 attached to the fixed base frames 11, 11 in the width direction (Y direction) of the fixed jaw 1 are configured to be inclined inward in the width direction (Y direction) of the fixed jaw 1 on the upper side when viewed from the front of the fixed jaw 1. In addition, the movable jaw 3 and the movable-side cutting blade 42 are configured so that the surface containing the long side 42m of the rectangular parallelepiped movable-side cutting blade 42 is vertical in the up-down direction and the surface containing the short side 42n is horizontal, and the movable jaw 3 is disposed in recesses 32b formed on both sides in the width direction (Y direction), and the movable-side cutting blade 42 is fixed to the movable jaw 3 with second bolts 62.

[0067] To summarize the configuration of the above-mentioned alternative embodiment 2, this is an industrial waste cutting machine characterized by "a fixed jaw 1 having fixed base frame portions 11, 11 arranged in parallel along the front-to-back direction at a predetermined interval on both sides of the width direction, and fixed side cutting blades 41, 41 attached to both fixed base frame portions 11, 11 of the fixed jaw 1 are inclined inward in the width direction (Y direction) of the fixed jaw 1 on the upper side when viewed from the front of the fixed jaw 1." [Explanation of symbols]

[0068] 1... fixed jaw, 11... fixed base frame portion, 3... movable jaw, 31... movable base plate portion, 41... fixed side cutting blade, 42... movable side cutting blade, 61... first bolt, 62... second bolt, 63...Third bolt, 5...Spacer, 7...Hydraulic cylinder (inside industrial waste cutting machine), 81...boom, 82...hydraulic cylinder on the hydraulic shovel side, 83...link.

Claims

1. a fixed jaw having fixed base frame portions arranged in parallel at a predetermined interval on both sides in the width direction and arranged along the front-to-rear direction; a movable jaw having a movable base plate portion that opens and closes so as to enter and exit between the fixed base frame portions of the fixed jaw; rectangular parallelepiped fixed cutting blades attached to the fixed base frame portions of the fixed jaw with first bolts; rectangular parallelepiped movable cutting blades fixed to the movable base plate portion of the movable jaw on both sides in the width direction with second bolts; and a spacer arranged between the movable cutting blades and fixed to the movable jaw with a third bolt, a plurality of the movable-side cutting blades are provided, and are arranged in parallel along the front-to-rear direction on both sides of the movable base plate portion of the movable jaw in the width direction, and are fixed to the movable base plate portion by the second bolts with the long sides of the cross sections perpendicular to the longitudinal direction of the movable-side cutting blades horizontal; and the spacer is arranged between the both movable-side cutting blades in the width direction and is fixed by third bolts; the fixed-side cutting blades attached to both fixed base frame portions of the fixed jaw are inclined upwardly as viewed from the front of the fixed jaw toward the inside in the width direction of the fixed jaw, and the fixed-side cutting blades and the movable-side cutting blades intersect when the fixed jaw is opened or closed; The spacer has a convex cross section perpendicular to the longitudinal direction, and pressing pieces are formed on both sides of the lower width direction, and the inner sides of the two movable cutting blades are pressed and fixed by the pressing pieces, and the second bolt and the third bolt are each vertical and their heads are located on the upper side.

2. 2. The industrial waste cutter according to claim 1, wherein both of said fixed base frames of said fixed jaws have a V-shaped cross section when viewed from the front.

3. 2. The industrial waste cutting machine according to claim 1, wherein the fixed jaws of both of said fixed base frames have a V-shaped cross section above the middle in the vertical direction when viewed from the front.

4. 2. The industrial waste cutter according to claim 1, wherein said movable jaw is rotated by a hydraulic cylinder provided inside a main body outer casing formed integrally with said fixed jaw.

5. 2. The industrial waste cutting machine according to claim 1, wherein the movable jaw is movable by a hydraulic cylinder provided on the boom side of the hydraulic excavator and a link operated by the hydraulic cylinder.

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