CN113613792A

CN113613792A - Disintegrating machine

Info

Publication number: CN113613792A
Application number: CN202080022888.2A
Authority: CN
Inventors: 张春晓; 谷口真一; 藤田一太
Original assignee: Kawata Manufacturing Co Ltd
Current assignee: Kawata Manufacturing Co Ltd
Priority date: 2019-03-20
Filing date: 2020-03-05
Publication date: 2021-11-05
Anticipated expiration: 2040-03-05
Also published as: JPWO2020189314A1; WO2020189314A1; CN113613792B; JP7191415B2

Abstract

The crusher comprises: an upper case (20); a lower case (22); a stationary knife (30); a fine crushing rotary knife (32); a rough-crushing rotary knife (34) which rotates around a rotation center line and crushes the object relatively coarsely; and a cover (42) that covers a part of the rough crush rotary blade (34). The lower case (22) is provided with a housing support member (44), and the housing support member (44) comprises a receiving surface (44a) for receiving the housing (42). The upper case (20) is provided with a housing positioning mechanism (20d), and the housing positioning mechanism (20d) is in contact with the housing (42) to position the housing (42) in the direction in which the rotation center line C1 of the rotary knife extends.

Description

Disintegrating machine

Technical Field

The present invention relates to a pulverizer.

Background

Conventionally, a pulverizer for pulverizing an object such as a runner (runner) produced by resin molding is known. For example, a pulverizer described in patent document 1 includes a main body portion including an upper casing having an inlet through which a target is input and a lower casing having an outlet through which the pulverized target is discharged. The main body is provided with: a fixed knife having a comb-shaped knife edge; a fine crushing rotary blade which is engaged with the fixed blade to crush an object relatively finely, and which has a comb-teeth-shaped blade edge; a coarse crushing rotary knife relatively coarsely crushing the object; and a cover covering a portion of the outlet side of the coarse crushing rotary blade. The fine crushing rotary blade and the coarse crushing rotary blade rotate about the same rotation center line.

The object pulverized by the fine pulverization rotating blades and the fixed blades is conveyed toward the outlet of the main body by the rotating fine pulverization rotating blades. On the other hand, the object to be ground by the rough grinding rotary blades is conveyed by the rotating rough grinding rotary blades, but cannot be directed to the outlet by the housing, and passes through the housing and returns to the inlet side of the fine grinding rotary blades.

The cover covering the rough grinding rotary blade is detachable from the main body of the grinder in order to remove the fine objects accumulated in the cover. The lower housing of the main body is provided with a plurality of guides that receive the housing and are positioned in the direction in which the rotation center line of the rotary knife extends. The housing is positioned in the direction in which the rotational center line extends by the guide, thereby suppressing contact of the rough crush rotary blades with the inner side surface of the housing in the direction in which the rotational center line extends.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 4298785

Disclosure of Invention

Problems to be solved by the invention

However, in the case of the crusher described in patent document 1, the housing has a groove extending in the circumferential direction on the outer peripheral surface thereof for positioning in the extending direction of the rotation center line of the rotating blade, and each of the plurality of guides has a protruding portion fitted into the groove. Therefore, the user takes time to assemble the housing to the plurality of guides. Specifically, the user needs to fit the protruding portions of the other guides into the grooves of the housing with the protruding portion of one guide fitted into the groove of the housing. Therefore, due to the accuracy of fixing each of the plurality of guides to the lower case, it is difficult to fit the protruding strip portion of the other guide into the groove of the housing in a state in which the protruding strip portion of one guide is fitted, and as a result, there is a possibility that the user takes time to assemble the housing.

Therefore, the present invention has the following as a problem: a user can easily and quickly set a cover covering the outlet side part of a rough grinding rotary blade on a main body part in a grinder, and easily and quickly position the cover in the extending direction of the rotating center line of the rough grinding rotary blade.

Means for solving the problems

In order to solve the above technical problems, according to an aspect of the present invention,

there is provided a pulverizer for pulverizing an object, wherein,

the disclosed device is provided with:

an upper housing having an inlet into which the object is put;

a lower housing on which the upper housing is detachably mounted, the lower housing having an outlet through which pulverized objects are discharged;

a comb-shaped fixed knife disposed in the upper case;

a fine crushing rotary blade in a comb-tooth shape disposed in the lower case, and configured to mesh with the fixed blade to relatively finely crush the object and to convey the finely crushed object toward the outlet;

a coarse crushing rotary blade that is disposed in the lower housing, rotates about the same rotation center line as the fine crushing rotary blade, and crushes the object relatively coarsely; and

a housing covering a portion of the outlet side of the coarse pulverizing rotary cutter,

the lower case is provided with a housing support member including a receiving surface receiving the housing,

the upper case includes a cover positioning mechanism that positions the cover in a direction in which the rotation center line extends by contacting the cover when the upper case is placed on the lower case.

Effects of the invention

According to the present invention, in the crushing machine, the user can easily and quickly set the cover covering the outlet side portion of the rough crushing rotary blade to the main body portion, and easily and quickly position the cover in the extending direction of the rotation center line of the rough crushing rotary blade.

Drawings

Fig. 1 is a front view of a pulverizer according to an embodiment of the present invention.

Fig. 2 is a perspective view of the main body of the pulverizer.

Fig. 3 is a plan view of the main body of the pulverizer.

Fig. 4 is a sectional view of the main body of the pulverizer taken along line a-a of fig. 3.

Fig. 5 is a perspective view of the main body of the crusher in an open state.

Fig. 6 is a perspective view of the lower case showing the details of the cover.

Fig. 7A is a diagram showing the cover positioning mechanism and the cover before being positioned by the mechanism.

Fig. 7B is a diagram showing the cover positioning mechanism and the cover positioned by the mechanism.

Fig. 8 is a left side view of the main body of the pulverizer in a closed state.

Fig. 9 is a left side view of the main body of the pulverizer in a fully opened state.

Fig. 10 is a left side view of the main body of the crusher in a state where the pinching prevention lever functions.

Fig. 11 is a perspective view showing another example of the first and second housing positioning mechanisms.

Fig. 12 is a plan view of a lower housing in a state where first and second casings having different shapes are provided in a pulverizer according to another embodiment of the present invention.

Fig. 13 is a sectional view of the lower case immediately before the setting of the first closure is completed.

Fig. 14 is a plan view of a lower housing in a state where first and second casings having different shapes are provided in a pulverizer according to a different embodiment of the present invention.

Fig. 15 is a perspective view of the housing support member showing a state in which the installation of the second housing is completed.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a front view of a pulverizer according to an embodiment of the present invention. The illustrated X-Y-Z coordinate system is for easy understanding of the embodiments of the present invention, and is not intended to limit the present invention. In addition, the X-axis direction indicates the left-right direction of the crusher, the Y-axis direction indicates the front-rear direction, and the Z-axis direction indicates the height direction.

As shown in fig. 1, the pulverizer 10 includes: a main body 12 for pulverizing an object such as a runner generated by resin molding; a charging hopper 14 for charging the body 12 with an object; and a collection hopper 16 for collecting the objects pulverized by the main body 12.

Fig. 2 is a perspective view of a main body of the pulverizer, fig. 3 is a plan view of the main body, fig. 4 is a sectional view of the main body taken along line a-a of fig. 3, and fig. 5 is a perspective view of the main body in an opened state. In fig. 2 to 5, components of the pulverizer that do not actually interfere with the invention are omitted in consideration of the ease of view of the drawings.

As shown in fig. 2, the main body 12 of the crusher 10 has a substantially cubic outer casing including an upper casing 20 and a lower casing 22 on which the upper casing 20 is placed.

As shown in fig. 2 and 4, the upper casing 20 includes an inlet 20a facing upward and through which the objects are input via the input hopper 14. The lower casing 22 has an outlet 22a directed downward for discharging the pulverized material toward the recovery hopper 16.

In the case of the present embodiment, as shown in fig. 2, the inlet 20a of the upper casing 20 has a square shape in which a dimension S1 in the front-rear direction (Y-axis direction) of the pulverizer 10 is equal to a dimension S2 in the left-right direction (X-axis direction). The loading hopper 14 connected to the inlet 20a of the main body 12 is provided with a square discharge port (not shown) in a corresponding manner. Therefore, the orientation of the input hopper 14 is changed according to the environment in which the pulverizer 10 is used, and the input hopper 14 can be connected to the main body 12 by rotating the input hopper 90 degrees around a rotation center line extending in the vertical direction (Z-axis direction), for example.

The upper case 20 is detachably mounted on the lower case 22, and the main body 12 is thereby closed. As shown in fig. 2 and 5, in the present embodiment, the upper case 20 is attached to the lower case 22 via a support pin 24, and the support pin 24 is provided on the rear surface of the lower case 22 and extends in the left-right direction (X-axis direction). As a result, as shown in fig. 5, the upper case 20 can be mounted on the lower case 22 so as to be rotatable about the support pin 24. As a result, the main body 12 can be opened in a state of being opened on the front side. As shown in fig. 1, a handle 26 that a user grips when opening the main body 12 is provided on the upper case 20. Further, a lock lever 28 for maintaining the main body 12 in the closed state is provided to the main body 12.

As shown in fig. 2 to 5, the main body 12 of the crusher 10 includes: a plurality of fixed blades 30 disposed on the upper case 20; a plurality of fine pulverizing rotary knives 32 relatively finely pulverizing the object; and a coarse pulverizing rotary knife 34 relatively coarsely pulverizing the object.

The plurality of fixed blades 30 are plate-shaped and have comb-teeth-shaped blade edges at their ends. Further, a plurality of stationary blades 30 are provided on the upper case 20. In the case of the present embodiment, two fixed knives 30 are provided for one fine crushing rotary knife 32.

Each of the fine crushing rotary blades 32 has a substantially cylindrical shape, and has a large number of comb-teeth-shaped cutting edges attached to the outer peripheral surface thereof at regular intervals in the circumferential direction. The respective comb-teeth-shaped tips of the fine crushing rotary knives 32 are engaged with the comb-teeth-shaped tips of the corresponding fixed knives 30.

Further, the plurality of fine crushing rotary blades 32 are respectively fitted to the rotary shafts 36. The rotary shaft 36 is supported by the lower case 22 so as to be rotatable about a rotation center line C1 extending in the left-right direction (X-axis direction) of the pulverizer 10.

The plurality of fine grinding rotary blades 32 are rotated by the rotation of the rotary shaft 36, and the cutting edges of the fixed blades 30 and the cutting edges of the fine grinding rotary blades 32, which are engaged with each other, bite into the object to be finely ground.

As shown in fig. 1, the right end of the rotating shaft 36 is drivingly coupled to a motor (not shown) in the motor unit 38, and the left end is supported by a bearing (not shown) in the bearing unit 40. Note that the motor unit 38 and the bearing unit 40 are assembled to the lower case 22. In the case of the present embodiment, as shown in fig. 1, the input hopper 14 is attached to the bearing unit 40 side so as to be able to tilt toward the left side of the pulverizer 10 when the main body 12 is opened as shown in fig. 5.

As shown in fig. 4, the object finely pulverized by the fine pulverization rotating blades 32 is pushed by the rake faces 32a of the rotating fine pulverization rotating blades 32, passes between the comb-teeth-shaped blade edges of the fixed blades 30, and is conveyed toward the outlet 22a of the lower housing 22. The object having passed through the fixed knife 30 is separated from the fine grinding rotary knife 32 by its own weight and falls into the collection hopper 16 through the outlet 22 a. At this time, the fixed blade positioned on the rear side of the fixed blades 30 functions as a scraper that prevents the object to be crushed from returning to the inlet 20a side.

In the present embodiment, each of the rough grinding rotary knives 34 has a hand sword shape having two cutting edges and has a larger outer peripheral diameter than the fine grinding rotary knife 32.

Further, a plurality of coarse pulverizing rotary knives 34 are respectively attached to the rotary shafts 36. Specifically, one rough grinding rotary blade 34 is disposed between two adjacent fine grinding rotary blades 32 on the rotary shaft 36. Thereby, the plurality of rough grinding rotary knives 34 rotate between the two fixed knives 30 adjacent in the extending direction (X-axis direction) along the rotation center line C1 thereof.

The cutting edges of the plurality of rough grinding rotary knives 34 grind the object coarsely by rotating the rotating shaft 36. Specifically, the rough grinding rotary blade 34 performs rough grinding so that the object having a size which is on the fixed blade 30 and into which the cutting edge of the fixed blade 30 and the cutting edge of the fine grinding rotary blade 32 cannot bite becomes a size into which the cutting edges can bite.

A part of the objects coarsely pulverized by the coarse pulverizing rotary blade 34 remains on the fixed blade 30, and the rest is pushed by the rake surface 34a of the coarse pulverizing rotary blade 34 and is conveyed toward the outlet 22a of the lower casing 22. The shroud 42 is provided in the main body 12 of the crusher 10, and the shroud 42 covers a portion of the rough grinding rotary blade 34 on the outlet 22a side, that is, a substantially lower half of the rough grinding rotary blade 34, so that the object pushed by the rake surface 34a falls into the collection hopper 16 without passing through the outlet 22 a.

Fig. 6 is a perspective view of the lower case showing the details of the cover. In fig. 6, the fine grinding rotary blade 32, the rough grinding rotary blade 34, and the like are omitted to show details of the housing 42.

As shown in fig. 6, the housing 42 has a semicircular shape when viewed from the extending direction (X-axis direction) of the rotation center line C1 of the rotation shaft 36. Specifically, the housing 42 includes: a pair of side wall portions 42a facing each other in the extending direction (X-axis direction) of the rotation center line C1 with the rough grinding rotary blade 34 interposed therebetween; and a bottom portion 42b, as shown in fig. 4, the bottom portion 42b surrounding the outer periphery of the rough grinding rotary blade 34 and having an arc shape when viewed from the extending direction of the rotation center line C1.

As shown in fig. 4 and 5, the rake surface 34a of the rotating rough crush rotary blade 34 enters the housing 42 from the front side of the housing 42 and exits from the rear side of the housing 42. The outer peripheral end of the rotating rough crush rotary blade 34 moves along the bottom 42b of the housing 42.

According to the housing 42, a part of the object to be ground by the rough grinding rotary blade 34 is pushed by the rake surface 34a of the rotating rough grinding rotary blade 34 and enters the housing 42. The object in the housing 42 is lifted by the rake surface 34a of the rotating rough grinding rotary blade 34, is separated from the housing 42, and returns to the inlet 20a side of the fixed blade 30. Then, the returned object is finely pulverized by the fixed blade 30 and the fine pulverizing rotary blade 32.

As shown in fig. 4 and 5, a pair of front side guides 20b that guide the object pushed by the rake surface 34a of the rough grinding rotary blade 34 into the housing 42 are provided in the upper case 20. Further, a pair of rear side guide portions 20c that guide an object placed on the rake surface 34a of the rough grinding rotary blade 34 retreating from the housing 42 to the inlet 20a side of the fixed blade 30 so as not to fall from the rake surface 34a are provided in the upper case 20.

The cover 42 is detachably provided to the lower case 22. Specifically, in the case of the present embodiment, as shown in fig. 4 and 6, a plurality of case support members 44 that support the case 42 are provided on the front inner wall surface 22b and the rear inner wall surface 22c of the lower case 22. In the case of the present embodiment, two cover support members 44 are provided for one cover 42. The housing support member 44 may be a member different from the lower case 22. In this case, the housing support member 44 is provided to the lower case 22 via a bolt or the like, for example. Instead, the housing support member 44 and the lower case 22 may be integrated as one component.

Each of the plurality of housing support members 44 has a receiving surface 44a that contacts the outer peripheral surface 42c of the housing 42 and receives the housing 42. Specifically, the receiving surface 44a of each of the cover support members 44 is formed of a curved surface having substantially the same curvature as the outer peripheral surface 42C of the cover 42 so that the cover 42 can rotate about the rotation center line C1 in a state of being in contact with the outer peripheral surface 42C of the cover 42. However, the outer peripheral surface 42c of the cover 42c may not be a curved surface, and may be a flat surface, for example.

As shown in fig. 6, each of the plurality of housing support members 44 includes a pair of side stoppers 44b that define a movable range of the housing 42 in which the outer peripheral surface 42C is in contact with the receiving surface 44a in the extending direction (X-axis direction) of the rotation center line C1. Specifically, the pair of side stoppers 44b face each other in the extending direction of the rotation center line C1. The distance L between the pair of side stoppers 44b facing each other is larger than the thickness W of the cover 42 (the dimension in the extending direction of the rotation center line C1). Thus, the housing 42 can move in the extending direction of the rotation center line C1 within a movable range in a state where the outer peripheral surface 42C thereof is in contact with the receiving surface 44a of the housing support member 44. The reason why the housing 42 is supported by the housing support member 44 so as to be movable in the extending direction of the rotation center line C1 will be described later.

With the plurality of cover support members 44, the cover 42 can be positioned in the front-rear direction (Y-axis direction) and the height direction (Z-axis direction) of the pulverizer 10. On the other hand, the plurality of shroud support members 44 do not position the shroud 42 in the left-right direction of the pulverizer 10, i.e., the extending direction (X-axis direction) of the rotation center line C1.

As shown in fig. 4 and 5, the cover positioning mechanism 20d that positions the cover 42 in the extending direction (X-axis direction) of the rotation center line C1 is provided on the upper case 20. In the case of the present embodiment, the housing positioning mechanism 20d is configured by a pair of inclined surfaces (second inclined surfaces) provided at the lower ends (lower ends when the main body 12 is in the closed state, as shown in fig. 2) of the pair of front side guide portions 20b and the pair of rear side guide portions 20c of the upper case 20. When the main body 12 is in the closed state, the pair of inclined surfaces 20d are directed obliquely downward and inward (on a plane (Z-X plane) including the extending direction (X-axis direction) of the rotation center line C1 and the height direction (Z-axis direction) of the crusher 10).

A pair of inclined surfaces (first inclined surfaces) 42d that contact the pair of inclined surfaces 20d of the upper case 20 are provided at the upper end of the side wall portion 42a of the cover 42. Specifically, the pair of inclined surfaces 42d of the cover 42 face obliquely upward and outward (on a plane (Z-X plane) including the extending direction (X-axis direction) of the rotation center line C1 and the height direction (Z-axis direction) of the crusher 10).

Fig. 7A shows the housing positioning mechanism and the housing before being positioned by it. Fig. 7B shows the housing positioning mechanism and the housing in a state positioned by it.

As shown in fig. 7A, the cover 42 is set on the receiving surface 44a of the cover support member 44 by the user in a state where the main body 12 is opened, that is, in a state where the upper case 20 is separated from the lower case 22. At this time, the housing 42 is biased to either the left or right (X-axis direction) and is placed on the housing support member 44, and/or is placed in an inclined posture. I.e., the enclosure 42 may be roughly positioned by a user on the plurality of enclosure support members 44.

When the user closes the main body 12, that is, when the user places the upper case 20 on the lower case 22, the pair of inclined surfaces 20d (or one inclined surface 20d) of the upper case 20 and the pair of inclined surfaces 42d (or the corresponding one inclined surface 42d) of the cover 42 come into contact with each other before that. By this contact, the housing 42 is adjusted to a posture (normal posture) in which the outer peripheral surface 42C is in contact with the receiving surfaces 44a of the plurality of housing support members 44 over the entire area in the extending direction (X-axis direction) of the rotation center line C1. Along with this, in the extending direction of the rotation center line C1, the housing 42 is positioned at a position (normal position) where the side wall portion 42a of the housing 42 does not contact the rough grinding rotary blade 34. That is, when the user closes the main body portion 12, the cover 42 is automatically positioned in the extending direction (X-axis direction) of the rotation center line C1.

In order to achieve such positioning, the housing 42 is supported by the housing support member 44 so as to be movable in the extending direction (X-axis direction) of the rotation center line C1. As shown in fig. 6, the pair of side stoppers 44b of the cover support member 44 face each other with a distance L therebetween so as to define a range in which the cover 42 can move in the extending direction 42 of the rotation center line C1 so that at least one of the pair of inclined surfaces 42d of the cover 42 can contact the inclined surface 20d of the corresponding upper case 20.

Since the cover 42 is supported by the plurality of cover support members 44 so as to be movable in the extending direction (X-axis direction) of the rotation center line C1, the user can easily set the cover 42 to the lower case 22 of the main body 12 in a short time as shown in fig. 7A. Further, the user can automatically position the cover 42 in the extending direction of the rotation center line C1 easily and in a short time by only closing the main body 12, that is, by only placing the upper case 20 on the lower case 22.

As shown in fig. 5, when the main body 12 is in the closed state, the pair of inclined surfaces 20d of the upper case 20 as the cover positioning mechanism are inclined downward and inward, respectively. The pair of inclined surfaces 42d of the cover 42 that contact the pair of inclined surfaces 20d of the upper case 20 face obliquely upward and outward. Alternatively, the pair of inclined surfaces (the housing positioning means) of the upper housing may be a pair of inclined surfaces facing outward, and the pair of inclined surfaces of the housing that are in contact with the pair of inclined surfaces of the upper housing may be a pair of inclined surfaces facing inward.

As shown in fig. 5, the cover 42 is provided on the lower case 22, and is positioned in the extending direction (X-axis direction) of the rotation center line C1 by the cover positioning mechanism of the upper case 20, that is, the inclined surface 20 d. Therefore, when the main body 12 is closed, the upper case 20 is preferably placed on the lower case 22 in a state of being positioned with respect to the lower case 22.

In the case of the present embodiment, as shown in fig. 2 and 5, the main body 12 includes a first case positioning mechanism 46 and a second case positioning mechanism 48 in order to place the upper case 20 in a positioned state with respect to the lower case 22.

As shown in fig. 2 and 5, the first housing positioning mechanism 46 includes an upper engaging member 50 provided on a front portion of a lower end of the upper housing 20 and a lower engaging member 52 provided on a front portion of an upper end of the lower housing 22.

In the case of the present embodiment, the lower engaging member 52 provided on the lower case 22 includes the groove 52a extending in the direction (Y-axis direction) orthogonal to the extending direction (X-axis direction) of the rotation center line C1. In the present embodiment, the groove 52a has a V-shaped cross section.

The upper engaging member 50 engaged with the lower engaging member 52 includes a protruding portion 50a extending in a direction (Y-axis direction) perpendicular to the extending direction (X-axis direction) of the rotation center line C1 and engaged with the groove 52a of the lower engaging member 52.

By engaging the upper engaging member 50 with the lower engaging member 52, the upper case 20 is positioned with respect to the lower case 22 in the extending direction (X-axis direction) of the rotation center line C1.

As shown in fig. 5, the second housing positioning mechanism 48 includes an upper engaging member 54 provided on a rear portion of the lower end of the upper housing 20 and a lower engaging member 56 provided on a rear portion of the upper end of the lower housing 22.

As shown in fig. 6, in the present embodiment, the lower engaging member 56 provided in the lower case 22 includes a groove 56a extending in the extending direction (X-axis direction) of the rotation center line C1. In the present embodiment, the groove 56a has a V-shaped cross section.

As shown in fig. 5, the upper engaging member 54 engaged with the lower engaging member 56 includes a protruding portion 54a that extends in the extending direction (X-axis direction) of the rotation center line C1 and engages with the groove 56a of the lower engaging member 56.

By engaging the upper engaging member 54 with the lower engaging member 56, the upper case 20 is positioned relative to the lower case 22 in a direction (Y-axis direction) orthogonal to the extending direction (X-axis direction) of the rotation center line C1.

The main body 12 of the crusher 10 includes a plurality of components for preventing foreign matter such as a user's finger from being caught between the upper case 20 and the lower case 22 when the main body 12 is closed.

Fig. 8 is a left side view of the main body of the pulverizer in a closed state. Fig. 9 is a left side view of the main body of the pulverizer in a fully opened state. Fig. 10 is a left side view of the main body of the crusher in a state where the pinching prevention lever functions. In fig. 8 to 10, the fine grinding rotary blade 32, the coarse grinding rotary blade 34, and the like are omitted.

As shown in fig. 1 and 8, a pinching prevention lever (pinching prevention member) 60 is provided on the front surface of the main body 12 of the pulverizer 10. Specifically, the pinching prevention lever 60 is attached to the front surface of the lower case 22 so as to be swingable about a rotation center line parallel to the rotation center line C1. The pinching prevention lever 60 includes a head portion 60a, and as shown in fig. 8, the head portion 60a contacts the upper case 20 when the main body portion 12 is in the closed state, and as shown in fig. 9, the head portion 60a moves to above the lower case 22 when the main body portion 12 is in the open state. The swing of the pinching prevention lever 60 for moving the head 60a in this manner is performed by using a spring (not shown) or by the weight of the head 60 a.

As shown in fig. 9, when the main body 12 is opened, that is, when the upper case 20 is separated from the lower case 22, the pinching prevention lever 60 swings and the head portion 60a thereof moves to above the lower case 22. That is, the head 60a of the pinching prevention lever 60 is detachably inserted between the upper case 20 and the lower case 22. As shown in fig. 10, when the main body 12 is closed in this state, the head portion 60a of the pinching prevention lever 60 is pinched between the front side portion of the lower end of the upper case 20 and the front side portion of the upper end of the lower case 22. This suppresses foreign matter such as a finger of the user from being caught between the front portion of the lower end of the upper case 20 and the front portion of the upper end of the lower case 22.

As shown in fig. 8 to 10, a protective plate (protective member) 62 is attached to the left side surface of the main body 12 (the portion where the left side surface of the bearing unit 40 is not present) so that foreign matter such as a finger of a user cannot enter between the rear side portion of the lower end of the upper case 20 and the rear side portion of the upper end of the lower case 22. Specifically, the protective plate 62 covers the gap between the upper case 20 and the lower case 22 formed by the separation of the upper case 20 and the lower case 22, thereby suppressing the intrusion of foreign matter into the gap. Although not shown, the same protective plate is also attached to the right side surface of the main body 12.

As shown in fig. 9, when the main body 12 is in the fully open state (i.e., when the upper case 20 is pivoted to the maximum extent in the direction away from the lower case 22), the center of gravity G of the upper case 20 is positioned rearward relative to the support pins 24 in order to prevent the upper case 20 from falling forward toward the lower case 22 by its own weight. Therefore, in the case of the present embodiment, the upper case 20 can be rotated rearward about the support pin 24 at an angle exceeding 90 degrees with respect to the lower case 22. As a result, the upper case 20 is entirely located rearward with respect to the support pins 24.

According to the present embodiment as described above, the user can easily and quickly set the cover 42 covering the outlet side portion of the rough grinding rotary blade 34 in the main body 12 in the crusher 10, and can easily and quickly position the cover 42 in the extending direction of the rotation center line C1 of the rough grinding rotary blade 34.

The present invention has been described by way of the above embodiments, but the embodiments of the present invention are not limited thereto.

For example, as shown in fig. 4, in the case of the above-described embodiment, two housing support members 44 of the housing 42 that receives the rough grinding rotary blade 34 are provided, but one member may be provided.

As shown in fig. 5 and 6, in the case of the above-described embodiment, the lower

engaging members

52 and 56 of the first and second

housing positioning mechanisms

46 and 48 have the

grooves

52a and 56a, and the upper engaging

members

50 and 54 have the

protrusions

50a and 54 a. However, the embodiments of the present invention are not limited thereto. For example, in the first and second housing positioning means, the upper engaging member may have a groove and the lower engaging member may have a protruding portion. For example, the upper engaging member of the first housing positioning means and the lower engaging member of the second housing positioning means may be provided with one of the groove and the projection, and the lower engaging member of the first housing positioning means and the upper engaging member of the second housing positioning means may be provided with the other of the groove and the projection.

As shown in fig. 5 and 6, in the case of the above-described embodiment, the first casing positioning mechanism 46 disposed on the front side of the main body 12 positions the upper casing 20 with respect to the lower casing 22 in the extending direction (X-axis direction) of the rotation center line C1 of the rotary knife. The second housing positioning mechanism 48 disposed on the rear side of the main body 12 positions the upper housing 20 relative to the lower housing 22 in a direction (Y-axis direction) orthogonal to the extending direction of the rotation center line C1 of the rotary knife. However, the embodiments of the present invention are not limited thereto. Conversely, the first housing positioning means may position the upper housing in a direction orthogonal to the direction in which the rotation center line of the rotary knife extends, and the second housing positioning means may position the upper housing in the direction in which the rotation center line of the rotary knife extends.

Further, as shown in fig. 5 and 6, in the case of the above-described embodiment, the lower

engaging members

52, 56 are provided with the V-shaped

grooves

52a, 56a in the first and second

case positioning mechanisms

46, 48, but the embodiment of the present invention is not limited thereto. For example, as shown in fig. 11, in the first and second case positioning mechanisms 146 and 148 of the other example, the lower

engaging members

152 and 156 have

grooves

152a and 156a having an arc-shaped cross section. On the other hand, the upper engaging members 150 and 154 include protruding

portions

150a and 154a that engage with the

arcuate grooves

152a and 156 a.

As described above, the first and second housing positioning mechanisms may have various embodiments, and the upper housing may be positioned with respect to the lower housing at least with respect to the extending direction of the rotation center line of the rotary knife, regardless of the shape and the mounting position of the upper engaging member and the lower engaging member according to the embodiment of the present invention.

Further, even if the first and second housing positioning mechanisms are not provided, the first and second housing positioning mechanisms may be omitted as long as the upper housing is positioned with respect to the lower housing at least in the extending direction of the rotation center line of the rotary knife. For example, when the body is configured such that the upper case is vertically moved up and down with respect to the lower case, the first and second case positioning mechanisms can be omitted in some cases.

In addition, as shown in fig. 5 and 6, in the case of the above-described embodiment, the housings 42 for the two rough grinding rotary knives 34 are common. However, the embodiments of the present invention are not limited thereto. For example, in the case where the two rough grinding rotary knives are different in shape (for example, in the case where the shape is different due to a manufacturing error (tolerance error)), a dedicated housing, that is, a different housing may be used for each of the two rough grinding rotary knives. However, in this case, it is necessary to provide the coarse grinding rotary blade not with a dedicated housing for one of the two coarse grinding rotary blades.

Fig. 12 is a plan view of a lower housing in a state where first and second casings having different shapes are provided in a pulverizer according to another embodiment of the present invention. Further, fig. 13 is a sectional view of the lower case immediately before the setting of the first closure is completed. In fig. 12 and 13, the fine pulverizing rotary blade, the coarse pulverizing rotary blade, and the like are omitted.

The pulverizer of the other embodiment shown in fig. 12 and 13 has first and

second casings

142A, 142B having different shapes. In the case of the embodiment shown in fig. 12 and 13, the first and

second housings

142A and 142B have a planar symmetrical shape with respect to a plane orthogonal to the extending direction (X-axis direction) of the rotation center line C1 of the rough grinding rotary blade.

Specifically, the first and

second housings

142A and 142B each include a rod-shaped protrusion 142e protruding toward the front of the main body 112 at the front portion thereof. In the first cover 142A, the rod-like projection 142e is provided on one side (the left side of the main body 112 in the case of the present embodiment) with respect to the thickness center (the center of the rotation center line C1 in the extending direction (X-axis direction)) of the cover 142A. In contrast, in the second cover 142B, the rod-like projection 142e is provided on the other side (the right side of the main body 112 in the present embodiment) with respect to the thickness center of the cover 142B.

As the first and second engaging portions that engage with the rod-like projections 142e of the first and

second casings

142A, 142B, for example,

groove portions

122d, 122e extending in the front-rear direction (Y-axis direction) of the crusher are provided on the front side portion of the upper surface 122f of the lower case 122. Specifically, in a state where the first cover 142A is supported by the two cover supporting members 44, the groove portion 122d is formed at a position on the lower case 122 that can be engaged with the rod-like projection 142 e. In a state where the second cover 142B is supported by the two cover supporting members 144, a groove portion 122e is formed at a position engageable with the rod-like projection 142 e.

With this configuration, the first and

second cases

142A and 142B are provided in the lower case 122 without being displaced from each other. That is, if the first and

second housings

142A and 142B are displaced from each other, the rod-like projections 142e cannot be engaged with the

groove portions

122d and 122e, and cannot be placed on the housing support member 44. As a result, the first and

second casings

142A and 142B can be installed to the corresponding rough crush rotary cutters without being displaced from each other.

Further, it is possible to suppress the first and

second casings

142A, 142B from being disposed in front-to-back opposition.

The rod-like projections 142e provided in the first and

second casings

142A and 142B may have different shapes. For example, the cross-sectional shape, length may be different.

When the rod-like projections 142e of the first and

second cases

142A and 142B have different cross-sectional shapes, for example, when one is a rectangular shape and the other is an inverted triangular shape, the cross-sectional shapes of the groove portions of the lower case 122 that engage with them may be different cross-sectional shapes, and one may be a rectangular shape and the other may be an inverted triangular shape. In this case, the position where the rod-like projection 142e is provided in each of the first and

second housings

142A, 142B may be the center in the thickness direction (X-axis direction).

As shown in fig. 12 and 13, instead of providing the rod-shaped projection 142e and the

groove portions

122d and 122e engaged with the rod-shaped projection 142e on the front side of the lower case 122, they may be provided on the rear side of the lower case 122.

That is, the

first housings

142A and 142B may have different shapes, and the lower case 122 may have a first engaging portion engageable with only the first housing 142A and a second engaging portion engageable with only the second housing 142B.

Fig. 14 is a plan view of a lower housing in a state where first and second casings having different shapes are provided in a pulverizer according to a different embodiment of the present invention. Fig. 15 is a perspective view of the housing support member showing a state in which the second housing is completely installed.

The pulverizer of the other embodiment shown in fig. 14 and 15 has first and

second casing pieces

242A, 242B having different shapes. In the case of the embodiment shown in fig. 14 and 15, the first and

second casings

242A, 242B have a shape symmetrical with respect to a plane orthogonal to the extending direction (X-axis direction) of the rotation center line C1 of the rough grinding rotary blade as a reference plane.

The first and

second housings

242A, 242B each include, at a front portion thereof, a projection 242e that projects in opposite directions to each other in the extending direction (X-axis direction) of the rotation center line C1. In the present embodiment, the projection 242e of the first cover casing 242A projects to the left of the lower casing 222, and the projection 242e of the second cover casing 242B projects to the right of the lower casing 222.

In the case of the embodiment shown in fig. 14 and 15, three kinds of

cover supporting members

244A, 244B, 244C are provided to the lower case 222 in order to support the first and

second covers

242A, 242B.

The housing support member 244A supports a front portion of the first housing 242A, and includes a pair of

stoppers

244b and 244c facing each other in a thickness direction (X-axis direction) of the first housing 242A. In order to avoid interference with the protrusion 242e of the first cover 242A, one stopper 244c of the cover support member 244A is smaller than the other stopper 244 b. That is, the stopper 244c corresponds to a portion where the stopper 244b is cut out.

The housing support member 244B supports a front portion of the second housing 242B, and includes a pair of stoppers 244B and 242c facing each other in the thickness direction (X-axis direction) of the second housing 242B. In order to avoid interference with the protrusion 242e of the second cover 242B, one stopper 244c of the cover support member 244B is smaller than the other stopper 244B.

The housing support member 244C supports rear portions of the first and

second housings

242A, 242B, and includes a pair of stoppers 242B facing each other in the thickness direction (X-axis direction) of the housing support member 244C.

With this configuration, the first and

second housings

242A, 242B are provided in the lower case 222 without being displaced from each other. That is, if the first and

second housings

242A, 242B are displaced from each other, the respective protrusions 242e come into contact with the stoppers 244B of the housing

support member grooves

244A, 244B, and cannot be placed on the receiving surfaces 244A of the

housing support members

244A, 244B. As a result, the first and

second casings

242A and 242B can be installed with respect to the corresponding rough crush rotary cutters without being displaced from each other.

Further, the first and

second housings

242A, 242B can be suppressed from being disposed in the opposite front-to-back direction.

Alternatively, the case support member may be provided with a protrusion (convex portion) having a different shape or provided at a different position, and the first and second cases may be provided with corresponding concave portions.

As shown in fig. 14 and 15, instead of providing the protrusion 242e or the

housing support members

244A and 244B on the front side of the lower case 222, they may be provided on the rear side of the lower case 222.

That is, the

first housings

242A and 242B may have different shapes, the pair of

housing support members

244A and 244C may have shapes that can engage with only the first housing 242A, and the pair of

housing support members

244B and 244C may have shapes that can engage with only the second housing 242B.

That is, the present invention is a pulverizer for pulverizing an object in a broad sense, including: an upper housing having an inlet into which the object is put; a lower housing on which the upper housing is detachably mounted, the lower housing including an outlet through which the pulverized material is discharged; a comb-shaped fixed knife disposed in the upper case; a fine crushing rotary blade having a comb-tooth shape, which is disposed in the lower housing, and which meshes with the fixed blade to crush the object relatively finely and conveys the object crushed finely toward the outlet; a coarse pulverizing rotary knife disposed in the lower casing, and rotating around the same rotation center line as the fine pulverizing rotary knife to relatively coarsely pulverize the object; and a cover covering a portion of the coarse crushing rotary blade on the outlet side, wherein the lower housing includes a cover support member including a receiving surface for receiving the cover, and the upper housing includes a cover positioning mechanism for positioning the cover in an extending direction of the rotation center line by contacting the cover when the upper housing is placed on the lower housing.

Industrial applicability

The present invention can be applied to a crusher having a housing partially covering a rotating knife.

Description of reference numerals:

20: an upper housing;

20 d: a housing positioning mechanism;

22: a lower housing;

30: fixing a knife;

32: a fine crushing rotary knife;

34: a coarse crushing rotary knife;

42: a housing;

44: a housing support member;

44 a: a bearing surface;

c1: a center line of rotation.

Claims

1. A crusher for crushing a subject, comprising:

an upper housing having an inlet into which the object is put;

a comb-shaped fixed knife disposed in the upper case;

2. The pulverizer of claim 1,

the cover casing is provided with a pair of first inclined surfaces which face obliquely upward and either one of the outer side direction or the inner side direction at the upper end,

the housing positioning mechanism is configured by a pair of second inclined surfaces which are inclined downward and are in contact with the pair of inclined surfaces of the housing in either the outward direction or the inward direction.

3. The pulverizer of claim 2,

the housing support member includes a pair of side stoppers that face each other in an extending direction of the rotation center line with the housing interposed therebetween,

the pair of side stoppers face each other with a distance therebetween so as to define a range in which the housing is movable in the extending direction of the rotation center line so that at least one of the pair of first inclined surfaces can contact the corresponding second inclined surface.

4. The pulverizer according to any one of claims 1 to 3, comprising:

and a first housing positioning mechanism including an upper engagement member provided on the upper housing and a lower engagement member provided on the lower housing and engaged with the upper engagement member, wherein the upper housing is positioned with respect to the lower housing in an extending direction of the rotation center line by engaging the upper and lower engagement members with each other.

5. The pulverizer of claim 4,

one of the upper and lower engaging portions of the first housing positioning mechanism includes a groove extending in a direction orthogonal to an extending direction of the rotation center line, and the other includes a protruding portion extending in the orthogonal direction and engageable with the groove.

6. The pulverizer according to any one of claims 1 to 5, comprising:

and a second housing positioning mechanism including an upper engagement member provided on the upper housing and a lower engagement member provided on the lower housing and engaged with the upper engagement member, wherein the upper housing is positioned with respect to the lower housing in a direction orthogonal to the extending direction of the rotation center line by engaging the upper and lower engagement members with each other.

7. The pulverizer of claim 6,

one of the upper and lower engaging portions of the second housing positioning mechanism includes a groove extending in the extending direction of the rotation center line, and the other of the upper and lower engaging portions includes a protruding portion that is engageable with the groove and extends in the extending direction of the rotation center line.

8. The pulverizer of any one of claims 1 to 7,

the coarse crushing rotary knife comprises a first coarse crushing rotary knife and a second coarse crushing rotary knife,

the casings include a first casing covering the first rough crush rotary blades and a second casing covering the second rough crush rotary blades, which are different in shape from each other,

the enclosure support member includes a first enclosure support member supporting the first enclosure and a second enclosure support member supporting the second enclosure,

the case positioning mechanism includes a first case positioning mechanism that positions the first case and a second case positioning mechanism that positions the second case,

the lower case includes a first engaging portion engageable with only the first housing and a second engaging portion engageable with only the second housing.

9. The pulverizer of any one of claims 1 to 7,

the first cover supporting member has a shape that engages only with the first cover,

the second housing support member has a shape that engages only with the second housing.

10. A shredder according to any one of claims 1 to 9, wherein there is:

and a pinching prevention member which is detachably inserted between the upper case and the lower case when the upper case and the lower case are separated from each other.

11. A shredder according to any one of claims 1 to 10, wherein there is:

and a protection member covering a gap formed by the upper case and the lower case being separated from each other.

12. The pulverizer of any one of claims 1 to 11,

comprising: a support pin provided on a rear surface of the lower housing and extending in an extending direction of the rotation center line,

the upper case is attached to the lower case via the support pin so as to be rotatable about the support pin,

when the upper case is pivoted to the maximum extent in a direction away from the lower case, the center of gravity of the upper case is located rearward with respect to the support pin.