JP2012115822A - Crusher for waste containing metal wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crusher with rotary cutters having gaps which can be adjusted easily in a short time.SOLUTION: In the crusher for crushing waste tire containing piano wire, rotary cutters 21 and spacers 22 are alternately fitted to rotary shafts 13A and 13B so as to mesh cutting blades 26 formed on the outer periphery of the rotary cutters 21 with the cutting blades 26 of the adjacent rotary cutters 21 with a gap γ. A screw-type cutter adjusting fixture is provided at both ends of the rotary shafts 13A and 13B for fixing the rotary cutters 21 and the spacers 22 by holding and pressing them. A contraction slit is formed in a circumferential direction on the internal surface of the spacer 22, so as to enable compression in the rotary shaft direction and adjustment of the gap γ of the adjacent cutting blades 26 using the cutter adjusting fixture.

Description

  TECHNICAL FIELD The present invention relates to a waste crusher including a metal thin wire for crushing waste home electric appliance resin or waste tire including a metal thin wire and reusing it as a fuel resource.

  For example, in a biaxial crusher, a rotary cutter and a spacer are alternately fitted to a pair of rotary shafts arranged in parallel to each other, and a cutting blade formed on the outer peripheral portion of the rotary cutter has a predetermined cutting gap. Installed so as to be engaged with each other, waste is drawn in by a hook projecting at a predetermined position on the outer peripheral portion of the rotary cutter, and cut and crushed by a cutting blade.

  By the way, soft waste materials such as waste home appliance resin and waste tires contain many fine metal wires having a diameter of about 0.2 mm, for example. For example, when cutting a piano wire or the like, a cutting gap of about 1/20 to 1/5 of the diameter is required. This means that when the cutting gap is further increased, the metal thin wire is torn off, and for example, in the case of a crushed rubber piece, a large number of metal thin wires are extended from the rubber piece. This is because it is not suitable as a fuel for a closed furnace or the like.

Therefore, in the rotary crusher, the cutting gap is set to 1/10 to 1/2 of the diameter of the thin metal wire (0.02 to 0.1 mm for a 0.2 mm thin metal wire).
However, there has been a problem that the cutting blade is worn, and the cutting gap is enlarged after one day or several days of operation, and the sharpness of the metal thin wire is lowered.

  In a conventional crusher such as Patent Document 1, the cutting gap of the rotary cutter is adjusted by exchanging with spacers having different thicknesses.

Japanese Patent No. 2911415 (FIG. 1)

  However, it takes time to replace the spacers, and various types of spacers having different thicknesses must be prepared, resulting in high equipment costs and running costs.

  The present invention solves the above-mentioned problems, and provides a waste crusher including a thin metal wire that can adjust a cutting gap easily and in a short time and can operate for a long time without exchanging or polishing a rotary blade. The purpose is to do.

The invention described in claim 1
A crusher in which rotating cutters and spacers are alternately fitted around a plurality of rotating shafts parallel to each other, and arranged so that the outer peripheral portions of rotating cutters of adjacent rotating shafts are alternately meshed with each other,
A cutting blade is formed along the outer peripheral edges of the rotary cutter, and a plurality of hooks are projected at regular intervals.
A cutter adjusting fixture that has male screw portions formed on the rotary shafts at both ends of each rotary shaft and a fixing nut member screwed to the male screw portions, and clamps and fixes the rotary cutter and the spacer. Provided,
On the inner circumferential surface of the spacer, by forming a slit for contraction having a predetermined depth in the radial direction along the circumferential direction, it is configured to be compressible in the rotation axis direction,
By tightening the fixing nut member, the spacer is compressed and the cutting gap between adjacent cutting blades can be adjusted.

The invention according to claim 2 is the configuration according to claim 1,
In the left and right side surfaces of the spacer, concave portions that are recessed in a curved shape are formed in the circumferential direction, and curved convex surfaces whose center swells are formed in the outer peripheral portion.

The invention according to claim 3 is the configuration according to claim 1 or 2,
A spring member is built in the shrinking slit of the spacer along the circumferential direction.
According to a fourth aspect of the present invention, the rotating cutter and the ring-shaped spacer are alternately fitted on the plurality of rotating shafts parallel to each other, and the outer peripheral portions of the rotating cutters of the adjacent rotating shafts are alternately engaged with each other. A crusher,
A cutting blade is formed along the outer peripheral edges of the rotary cutter, and a plurality of hooks are projected at regular intervals.
A cutter adjusting fixture that has male screw portions formed on the rotary shafts at both ends of each rotary shaft and a fixing nut member screwed to the male screw portions, and clamps and fixes the rotary cutter and the spacer. Provided,
By forming a contraction slit having a predetermined depth in the radial direction on the outer peripheral surface of the spacer along the circumferential direction, the spacer can be compressed in the rotation axis direction, and the width of the inner peripheral portion of the spacer can be Formed narrower than the width of the part,
By tightening the fixing nut member, the spacer is compressed and the cutting gap between adjacent cutting blades can be adjusted.

  According to the first aspect of the present invention, the slits for contraction that are open on the inner peripheral surface of the spacer and can compress the spacer in the direction of the rotation axis are formed, so that the cutter adjustment fixing provided at both ends of each rotation axis By tightening the fixing nut member of the tool, the cutting gap of the cutting blade of the rotary cutter can be adjusted. Accordingly, when the cutting blade is worn and the cutting gap of the cutting blade is widened, and the cutting failure of the thin metal wire frequently occurs, the cutting gap can be adjusted easily and in a short time to cut the fine metal wire satisfactorily. Therefore, the cutting gap can be adjusted only by adjusting the cutter adjusting fixture within the compressible range of the spacer, and it is possible to operate for a long time without the need for replacement of the spacer. Further, since the slit for contraction is opened on the inner peripheral surface of the spacer, the cut metal fine wire does not get in and get entangled, and the waste containing the metal fine wire can be crushed well.

  According to the second aspect of the present invention, the concave portion formed on the left and right side surfaces of the spacer disperses the clamping force on the inner peripheral side and the outer peripheral side, and the curved convex surface formed on the outer peripheral portion allows the spacer outer peripheral portion to be curved. The spacer can be effectively compressed and the cutting gap can be adjusted smoothly.

  According to the third aspect of the present invention, the spring of the spacer is selected by selecting the material and characteristics of the spring member, even if the slit is wide, by interposing the spring member in the contraction slit. A constant can be arbitrarily set, and a spacer that is not compressed by a crushing load in the direction of the rotation axis and can be compressed by the cutter adjusting fixture can be provided.

  According to invention of Claim 4, the width | variety of the shrinking slit opened to the outer peripheral surface of a spacer and the inner peripheral part of a spacer was made narrower than the width | variety of an outer peripheral part, and the spacer was made compressible in the rotating shaft direction. Therefore, it is possible to adjust the cutting gap of the cutting blade of the rotary cutter by tightening the fixing nut members of the cutter adjusting fixture provided at both ends of each rotary shaft. Accordingly, when the cutting blade is worn and the cutting gap of the cutting blade is widened, and the cutting failure of the thin metal wire frequently occurs, the cutting gap can be adjusted easily and in a short time to cut the fine metal wire satisfactorily. Therefore, the cutting gap can be adjusted only by adjusting the cutter adjusting fixture within the compressible range of the spacer, and it is possible to operate for a long time without the need for replacement of the spacer. Further, since the slit for contraction is opened on the inner peripheral surface of the spacer, the cut metal fine wire does not get in and get entangled, and the waste containing the metal fine wire can be crushed well.

Example 1 of the crusher which concerns on this invention is shown, and it is an expanded cross-sectional view of a spacer part. It is a front view of a spacer. It is a fragmentary sectional view of the planar view of a crusher. It is a center longitudinal cross-sectional view of a crusher. It is AA sectional drawing shown in FIG. It is BB sectional drawing shown in FIG. (A) And (b) shows the other Example of a spacer, (a) is the partial expanded cross-sectional view of Example 2, (b) is the partial expanded cross-sectional view of Example 3. FIG. Example 2 of the crusher which concerns on this invention is shown, and it is an expanded cross-sectional view of a spacer part. (A) thru | or (c) shows a spacer, (a) is a partial expanded sectional view explaining the spacer of Example 2, (b) is a partial expansion of the spacer clamped by the cutter adjusting fixture of Example 2. A cross-sectional view, (c) is a partially enlarged cross-sectional view of a spacer of another embodiment.

[Example 1]
Embodiment 1 of the present invention will be described below with reference to the drawings.
3 to 6 show a rotary biaxial crusher that crushes waste tires (soft waste) including many piano wires (metal thin wires) having a diameter of about 0.2 mm, for example. In this crusher, on a base plate 11 having a crushing material outlet 11a, a casing 12 having a rectangular shape in a plan view in which a hopper 17 for introducing waste is installed in an upper position is arranged upright, and left and right side plates of the casing 12 are disposed. Between the shafts 12a and 12b, horizontal rotation shafts 13A and 13B parallel to each other are rotatably supported. The rotary shafts 13A and 13B are provided with a rotary cutter 21 and a ring-shaped spacer 22 that can crush waste tires including piano wires.

  As shown in FIG. 3, a crushing drive device 14 that rotationally drives the rotary shafts 13 </ b> A and 13 </ b> B is disposed on the base plate 11. In this crushing drive device 14, a pair of drive motors 15 </ b> A and 15 </ b> B with reduction gears are installed on the base plates 11 on both the left and right sides of the casing 12, and the output shafts of the drive motors 15 </ b> A and 15 </ b> B are flanges 16 for overload prevention. Are connected to the symmetrical ends of the rotary shafts 13A and 13B, respectively. Thereby, adjustment of the cutting gap γ, which will be described later, and the disassembly and replacement of the rotary cutter 21, the spacer 22, and the support member can be performed easily and quickly. The overload prevention flange 16 and the emergency stop mechanism incorporated in the drive motors 15A and 15B are used as an overload stop mechanism for preventing breakage when hard waste is mixed into the rotary cutter 21 with this crusher. It is provided twice. The overload prevention flange 16 connects a pair of flange plates that are abutted to each other by attaching a plurality of break pins 16a through through holes formed at regular intervals in the circumferential direction. By transmitting the power through the rupture pin 16a at the time of overload, the rotary cutter 21 can be forcibly stopped to prevent the equipment from being damaged and work safely. The emergency stop mechanism of the drive motors 15A and 15B detects an overcurrent at the time of overload and makes an emergency stop.

  As shown in FIG. 4, the rotary shafts 13 </ b> A and 13 </ b> B are formed in, for example, a substantially regular hexagonal cross section, and substantially regular hexagonal center holes 21 a and 22 a are respectively formed in the shaft centers of the rotary cutter 21 and the spacer 22. . The rotary cutter 21 and the spacer 22 are alternately fitted to the rotary shafts 13A and 13B through the center holes 21a and 22a, respectively, and the outer peripheral portions of the rotary cutters 21 and 21 are arranged to engage with each other. Further, comb-shaped scrapers 23 are attached to the inner surfaces of the front and rear side plates 12 c and 12 d of the casing 12 so as to mesh with each other with a predetermined gap outside the rotating cutter 21.

  The casing 12 includes upper and lower frames 12U and 12D that can be separated into upper and lower portions corresponding to the rotation shafts 13A and 13B, and is configured to be assembled and separated by a plurality of bolts (not shown). Thereby, when exchanging the rotary cutter 21 and the spacer 22, the upper frame 12U can be separated from the lower frame 12D and the rotary shafts 13A and 13B can be detached from the casing 12. As shown in FIGS. 3 and 5, bearing boxes 41U and 41D which are divided vertically are attached to the left and right side plates 12a and 12b by the upper and lower frames 12U and 12D of the casing 12 via the upper and lower base portions 40U and 40D, respectively. The bearings 42A and 42B at both ends of the rotary shafts 13A and 13B are held in the bearing boxes 41U and 41D, respectively, so as to be detachable.

  As shown in FIGS. 3 and 6, the rotary cutter 21 and the spacer 22 are interposed between the rotary cutter 21 and the spacer 22 group and the bearings 42A and 42B on both ends of the rotary shafts 13A and 13B via the pinching sleeve 43. A cutter adjustment fixture 44 that can be clamped and fixed is provided. The cutter adjusting fixture 44 includes male screw portions 44a formed on the rotary shafts 13A and 13B, and fixing nut members 44b and 44c respectively screwed to the male screw portions 44a. The fixing nut members 44b and 44c are grooves. As shown by the phantom line in FIG. 6, the rotary nuts are fastened to the fixed nut members 44b and 44c with a predetermined clamping pressure by an adjusting tool 45 having a claw portion that can be fitted into the groove. 21 and the spacer 22 can be fixed, and the spacer 22 can be compressed by a larger clamping force, so that the position of the rotary cutter 21 in the direction of the rotation axis can be finely adjusted.

  As shown in FIGS. 1 and 2, the rotary cutter 21 has a circular disc main body 24 having a predetermined thickness, a center hole 21a, and a pair of hooks 25 spaced apart by 180 ° at symmetrical positions on the outer periphery. Yes. These hooks 25 are provided with front blades 25a at the front part in the rotational direction for drawing the waste tires between the rotary cutters 21 and breaking them. Further, the cutting blade 26 is provided on both outer peripheral edges of the disc body 24 over the entire circumference including the inner peripheral side of the hook 25. The cutting blade 26 has a cutting tip implanted in a cutting blade mounting groove formed along both edges on the outer periphery of the disc body 24 by brazing. In FIG. 1, hatching indicating a cross section is omitted.

  As shown in FIGS. 1 and 2, the spacer 22 has a substantially regular hexagonal center hole 22a into which the rotation shafts 13A and 13B are fitted, and the spacer body 31 is formed on the inner peripheral surface of the center hole 22a. A shrinking slit 32 having a predetermined depth in the radial direction is formed over the entire circumference. The contraction slit 32 has a width δ of, for example, 0.7 to 1.5 mm. In addition, the spacer 22 is formed in a rectangular shape with rounded corners in the cross section, and a concave portion 33 that is recessed in a curved shape is formed in the central portion of the left and right side surfaces over the entire circumference. Can be distributed on the inner peripheral side and the outer peripheral side. Further, the outer peripheral portion is formed on the curved surface 34 in which the center swells over the entire circumference, and the outer peripheral portion swells in the normal direction by the compressive force in the rotation axis direction so that the spacer 22 can be compressed in the rotation axis direction. It is configured. The spacer 22 is made of metal and has a rigidity capable of opposing the compressive force and a high spring constant. For example, tool steel may be used, but spring steel having a high elastic limit can also be used.

  In the above configuration, the rotary cutters 21 and the spacers 22 are alternately fitted to the rotary shafts 13A and 13B, and the sandwiching sleeves 43A and 43B are fitted to both ends of the assembly of the rotary cutter 21 and the spacer 22, Fixing nut members 44b and 44c are attached to the male screw portion 44a, and bearings 42A and 42B are attached to both ends. Then, with the cutting blades 26 of the rotary cutter 21 meshing with each other, the bearings 42A and 42B are fitted into the lower bearing box 41D, and then the upper frame 12U is overlapped from above and the upper bearing box 41U is fitted to the bearings 42A and 42B. It fixes to lower bearing box 41D, hold | maintains bearing 42A, 42B, and supports rotating shaft 13A, 13B to casing 12 rotatably.

  Next, the adjusting tool 45 is used to operate the fixing nut members 44b and 44c of the cutter adjusting fixture 44, and the cutting gap γ of the cutting blade 26 is adjusted using a measuring tool such as a gap gauge. This cutting gap γ is selected from a range of 0.05 to 0.25 mm, preferably in a range of 0.08 to 0.15 mm, depending on the internal state of waste tires and fine metal wires.

  The crushing drive device 14 is activated to rotate the rotary shafts 13A and 13B, and the rotary cutters 21 and 21 are rotated in a relative direction. Then, the waste tire piece is introduced from the hopper 17, and the waste tire piece is drawn into the meshing portion of the rotary cutter 21 by the hook 25 and crushed by the front blade 25 a and the cutting blade 26, and the existing piano wire is drawn in by the cutting blade 26. Disconnect.

  When a predetermined operation time, for example, about 8 to 24 hours elapses, the crusher is stopped and the state of cutting the piano wire of the waste tire piece is confirmed. When the cutting blade 26 is worn and the cutting gap γ is enlarged and the cutting state of the piano wire is deteriorated, the adjusting nut 45 is used to fix the fixing nut members 44b at both ends of the rotary shafts 13A and 13B. By tightening 44c, the spacer 22 is compressed, the cutting gap γ of the cutting blade 26 is reduced, and the cutting gap γ is returned to the initial value using a gap gauge or the like.

  When the adjustment range at the start time exceeds the compression range of the spacer 22, the rotary shafts 13 </ b> A and 13 </ b> B are removed, and the spacer 22 is replaced with a narrower one or replaced with a new rotary cutter 21. The worn rotary cutter 21 is reused by replacing the cutting blade 26 with a new cutting edge.

  According to the first embodiment, since the slits for contraction 32 that are opened in the inner peripheral surface of the spacer 22 and can compress the spacer 22 in the direction of the rotation axis are formed, they are provided at both ends of the rotation shafts 13A and 13B. By tightening the fixing nut members 44b and 44c of the cutter adjusting fixture 44, the cutting gap γ of the cutting blade 26 of the rotary cutter 21 can be adjusted easily and in a short time.

  Therefore, it is possible to cut and crush the waste tires in which the cutting of the piano wire is essential, and the compression of the spacer 22 even when the cutting blade is worn and the cutting gap γ is widened and a cutting failure of the piano wire occurs. Within the range, the adjustment of the cutting gap γ with the cutter adjusting fixture 44 makes it possible to operate for a long time without the need to replace the spacer 22. Efficiency can be improved.

  In addition, the concave portion 33 is formed on the left and right side surfaces of the spacer 22, and the curved convex surface 34 is formed on the outer peripheral portion, whereby the spacer 22 is compressed in the direction of the rotation axis by the cutter adjusting fixture 44 and the adjustment of the cutting gap γ is smoothly performed. Can be done.

  Safety is improved by a plurality of safety mechanisms. That is, 1) The cutting blade can be prevented from being chipped or damaged by the elasticity of the cutting blade due to the spacer 22 being compressed. 2) Even when hard crushed material (foreign matter) is mixed, the cutting gap γ is pushed and expanded within the compression range of the spacer 22, so that it can pass between the rotary cutters 21. 3) In a state where the larger hard crushed material is caught in the rotary cutter 21, the breaker pin 16a is broken by the emergency stop mechanism by the overload prevention flange 16, and the transmission of power is stopped. 4) The emergency stop mechanism of the drive motors 15A and 15B detects an overcurrent caused by an overload and performs an emergency stop. Thereby, damage to the rotary cutter 21 etc. is prevented.

  Furthermore, dust, noise and vibration can be reduced by the elasticity of the cutting blade by compressing the spacer 22. Furthermore, since the slit 32 for shrinkage is opened on the inner peripheral surface of the spacer 22, the cut piano wire does not enter and get entangled with the rotary cutter 21, and the waste tire including the piano wire can be crushed well. Energy saving and cost reduction.

  Although a large radial load is generated on the rotary cutter 21 during crushing of the waste tire, the load in the thrust direction is relatively small because the tire itself is a soft synthetic rubber. Even if the load in the thrust direction is excessive, by setting the spring constant of the spacer 22 as appropriate, the rotary cutter 21 is displaced in the rotational axis direction so that the adjacent cutting blades 26 are separated from each other by a cutting gap γ. It is possible to prevent a collision beyond.

[Example 2]
FIG. 7A is a partially enlarged cross-sectional view showing Example 2 of the spacer.
When a spacer is formed using a metal material having a high spring constant, it may be difficult to form a narrow slit for shrinkage having a width δ of 0.7 to 1.5 mm on the inner peripheral surface of the center hole. In this case, as shown in the drawing, a contraction slit 52 having a wide width δ is formed on the inner peripheral surface of the center hole 51 a of the spacer 51, and a disc-shaped spring plate (spring member) is formed in the contraction slit 52. By installing 53 along the circumferential direction, the spacer 51 and the spring plate 53 can provide the spacer 51 having a sufficiently high spring constant and capable of facing the load in the rotation axis direction.

  The spring plate 53 is formed by a plurality of parts that are divided in the circumferential direction for insertion into the contraction slit 52 or a disc spring that is partly cut and can be expanded or contracted. It may be a disc spring deformed into a corrugated cross section along the circumferential direction.

  According to the spacer 51 of the second embodiment, the width of the contraction slit 52 is formed to be somewhat wider than that in which the contraction slit having a narrow width δ cannot be formed or the spring constant of the spacer 51 is to be adjusted. By inserting a spring plate 53 having a predetermined spring constant therein, the load to be compressed can be increased with respect to the load in the rotation axis direction on the spacer 51. Further, by changing the spring plate 53 to have a different spring constant, the spring constant of the spacer 51 can be changed, and the degree of design freedom can be increased.

[Example 3]
FIG. 7B is a partial enlarged cross-sectional view showing Example 3 of the spacer. The spacer 61 of Example 3 is formed by opening a plurality of shrinking slits 62A and 62B having different depths on the inner peripheral surface of the center hole 61a. The contraction slit 62A in the center is formed deeply, the contraction slits 62B on both sides are formed shallowly, and the protruding distance of the curved surface 34 is further increased, thereby smoothly contracting the spacer 61 against the compression in the rotation axis direction. I can do it.

According to the spacer 61 of the third embodiment, the same operational effects as those of the first embodiment can be obtained.
In addition, although the biaxial crusher was demonstrated in Example 1, the triaxial or more rotary crusher may be sufficient. Moreover, although the crushed material was used as a waste tire, even if it is soft waste such as waste home appliance resin containing a lot of fine metal wires, the same effects can be obtained.

[Example 4]
FIGS. 8 and 9 (a) and 9 (b) are enlarged cross-sectional views of the spacer portion showing Example 4 of the spacer. In the spacer 81 of the fourth embodiment, the V-shaped contraction slit 82 opened in the center portion in the width direction (axial direction) on the outer peripheral surface has a constant depth from the intermediate portion in the radial direction to the inner peripheral side. It is formed along. The width Wo of the outer peripheral surface of the spacer 81 is larger than the width Wi of the inner peripheral surface (center hole 81a), and for example, the width d1 of the opening of the contraction slit 82 is set to be equal to Wo−Wi.

  In the above configuration, in the initial use state in which the cutting gap γ is set, the spacer 81 is used in a state in which the width of the spacer 81 is made slightly smaller than the width Wo of the outer peripheral surface by the cutter adjusting fixture (not shown). To do. When the predetermined operation time has elapsed, the crusher is stopped and the state of cutting the piano wire is confirmed. When the cutting blade 26 is worn and the cutting interval γ is enlarged, and the cutting state of the piano wire is deteriorated, the adjusting nut 45 is used to fix the nuts 44b at both ends of the rotary shafts 13A and 13B. , 44c is compressed, the spacer 81 is compressed, the cutting gap γ of the cutting blade 26 is reduced, and the initial value is restored using a gap gauge or the like.

After several adjustments, as shown in FIG. 9B, when the contraction slit 82 is closed and the compression range is exceeded, the spacer 81 and the rotary cutter 21 are replaced.
According to the spacer 81 of the fourth embodiment, the same operational effects as those of the first embodiment can be obtained. Further, since the shrinking slit 82 is formed on the outer peripheral surface, the processing becomes easy and the manufacturing cost can be reduced.

  FIG. 9C shows a modification of the fourth embodiment. Instead of the V-shaped contraction slit 82, the spacer 91 is formed with a wide U-shaped contraction slit 92 (d2> d1). A ring-shaped disc spring 93 is fitted. The disc spring 93 is divided into a plurality of parts in the circumferential direction for insertion into the contraction slit 92, a part that is cut and capable of expanding and contracting, and a corrugated cross section along the radial direction and the circumferential direction. A modified one is adopted.

  According to the modification of the fourth embodiment, in addition to the function and effect of the fourth embodiment, the processing of the shrinking slit 92 is further facilitated, and the disc spring 93 prevents the chip shrinking slit 92 from entering. Can do.

γ Cutting gap δ Slit width 12 Casing 12U Upper frame 12D Lower frame 13A, 13B Rotating shaft 14 Crushing drive device 21 Rotating cutter 21a Center hole 22, 51, 61 Spacer 22a Center hole 23 Scraper 24 Disc body 25 Hook 26 Cutting blade 31 Spacer Main body 32, 52, 62A, 62B Shrinkage slit 33 Concave portion 34 Curved convex surface 41U Upper bearing box 41D Lower bearing box 42A, 42B Bearing 43A, 43B Clamping sleeve 44 Cutter adjusting fixture 44a Male threaded portion 44b, 44c Fixed nut member 45 Adjustment tool 53 Spring plate 81 Spacer 82 Shrinkage slit 91 Spacer 92 Shrinkage slit 93 Disc spring

Claims (4)

A crusher in which rotating cutters and ring-shaped spacers are alternately fitted around a plurality of rotating shafts parallel to each other, and the outer peripheral portions of the rotating cutters of adjacent rotating shafts are alternately meshed with each other,
A cutting blade is formed along the outer peripheral edges of the rotary cutter, and a plurality of hooks are projected at regular intervals.
A cutter adjusting fixture that has male screw portions formed on the rotary shafts at both ends of each rotary shaft and a fixing nut member screwed to the male screw portions, and clamps and fixes the rotary cutter and the spacer. Provided,
On the inner circumferential surface of the spacer, by forming a slit for contraction having a predetermined depth in the radial direction along the circumferential direction, it is configured to be compressible in the rotation axis direction,
A waste crusher including a thin metal wire, wherein the fixing nut member is tightened to compress the spacer and adjust a cutting gap between adjacent cutting blades. 2. A waste crusher including a thin metal wire according to claim 1, wherein concave and concave portions that are recessed in a curved shape are formed on the left and right side surfaces of the spacer in the circumferential direction, and a curved convex surface that is bulged at the center is formed on the outer peripheral portion. . The waste crusher including a thin metal wire according to claim 1 or 2, wherein a spring member is provided in the shrinking slit of the spacer along the circumferential direction. A crusher in which rotating cutters and ring-shaped spacers are alternately fitted around a plurality of rotating shafts parallel to each other, and the outer peripheral portions of the rotating cutters of adjacent rotating shafts are alternately meshed with each other,
A cutting blade is formed along the outer peripheral edges of the rotary cutter, and a plurality of hooks are projected at regular intervals.
A cutter adjusting fixture that has male screw portions formed on the rotary shafts at both ends of each rotary shaft and a fixing nut member screwed to the male screw portions, and clamps and fixes the rotary cutter and the spacer. Provided,
By forming a contraction slit having a predetermined depth in the radial direction on the outer peripheral surface of the spacer along the circumferential direction, the spacer can be compressed in the rotation axis direction, and the width of the inner peripheral portion of the spacer can be Formed narrower than the width of the part,
A waste crusher including a thin metal wire, wherein the fixing nut member is tightened to compress the spacer and adjust a cutting gap between adjacent cutting blades.

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