WO2020189314A1

WO2020189314A1 - Pulverizer

Info

Publication number: WO2020189314A1
Application number: PCT/JP2020/009490
Authority: WO
Inventors: 張　春暁; 谷口　真一; 一太藤田
Original assignee: 株式会社カワタ
Priority date: 2019-03-20
Filing date: 2020-03-05
Publication date: 2020-09-24
Also published as: CN113613792B; JP7191415B2; CN113613792A; JPWO2020189314A1

Abstract

This pulverizer has: an upper housing 20; a lower housing 22; a fixed blade 30; fine-pulverizing rotary blades 32; coarse-pulverizing rotary blades 34 that rotate around an rotation center line and relatively coarsely pulverize a workpiece; and a cover case 42 that covers a portion of the coarse-pulverizing rotary blades 34. The lower housing 22 is provided with a cover case support member 44 that includes a receiving surface 44a that receives the cover case 42. The upper housing 20 is provided with a cover case positioning mechanism 20d that makes contact with the cover case 42, thereby positioning the cover case 42 in the extension direction of the rotation center line C1 of the rotary blades.

Description

Crusher

The present invention relates to a crusher.

Conventionally, a crusher for crushing an object such as a runner generated by resin molding has been known. For example, the crusher described in Patent Document 1 has a main body portion including an upper housing having an inlet for inserting an object and a lower housing having an outlet for discharging the crushed object. Inside the main body, a fixed blade having a comb-shaped cutting edge, a fine crushing rotary blade having a comb-shaped cutting edge that meshes with the fixed blade to crush the target relatively finely, and a relatively coarse crushing target. A rough crushing rotary blade and a cover case for covering the outlet side portion of the rough crushing rotary blade are provided. Further, the fine crushing rotary blade and the coarse crushing rotary blade rotate around the same rotation center line.

The object crushed by the fine crushing rotary blade and the fixed blade is conveyed toward the outlet of the main body by the rotating fine crushing rotary blade. On the other hand, the object crushed by the coarse crushing rotary blade is conveyed by the rotating coarse crushing rotary blade, but cannot go to the outlet by the cover case, and passes through the cover case to the inlet side of the fine crushing rotary blade. Returned.

The cover case that covers the coarse crushing rotary blade is removable from the main body of the crusher in order to remove fine objects accumulated in the cover case. A plurality of guides that receive the cover case and position the rotation center line of the rotary blade in the extending direction are provided in the lower housing of the main body. By positioning the cover case in the direction in which the center line of rotation extends by the guide, contact between the coarsely pulverized rotary blade and the inner surface of the cover case in the direction in which the center line of rotation extends is suppressed.

Japanese Patent No. 4298785

However, in the case of the crusher described in Patent Document 1, in order to position the rotary blade in the extending direction of the rotation center line, the cover case is provided with a groove extending in the circumferential direction on the outer peripheral surface thereof, and a plurality of guides are provided. Each has a ridge that fits into the groove. Therefore, the user takes time to attach the cover case to the plurality of guides. Specifically, the user needs to fit the ridge portion of one guide into the groove of the cover case while the ridge portion of one guide is fitted into the groove of the cover case. Therefore, depending on the fixing accuracy of each of the plurality of guides to the lower housing, it becomes difficult to fit the protrusions of the other guides into the grooves of the cover case in which the protrusions of one guide are fitted, and as a result. , The user may take time to install the cover case.

Therefore, the present invention enables the user to easily and quickly set the cover case covering the outlet side portion of the coarse crushing rotary blade on the main body of the crusher, and the cover case is roughly crushed and rotated. An object of the present invention is to easily and in a short time to position the extending direction of the rotation center line of the blade.

In order to solve the above technical problems, according to one aspect of the present invention,
A crusher that crushes objects
An upper housing with an inlet into which the object is inserted
A lower housing in which the upper housing is spaced apart and has an outlet from which the crushed object is discharged.
A comb-shaped fixed blade arranged in the upper housing and
A comb-tooth-shaped finely crushed rotary blade arranged in the lower housing, which meshes with the fixed blade to crush the object relatively finely, and conveys the finely crushed object toward the outlet.
A coarse crushing rotary blade arranged in the lower housing, rotating around the same rotation center line as the fine crushing rotary blade, and relatively coarsely crushing the object.
It has a cover case that covers the outlet side portion of the coarse crushing rotary blade.
The lower housing comprises a cover case support member that includes a receiving surface that receives the cover case.
A pulverization provided with a cover case positioning mechanism for positioning the cover case in the extending direction of the rotation center line by contacting the cover case when the upper housing is mounted on the lower housing. The machine is provided.

According to the present invention, in the crusher, the cover case covering the outlet side portion of the coarse crushing rotary blade can be easily and quickly set by the user on the main body portion, and the cover case can be roughly crushed and rotated. The extending direction of the rotation center line of the blade can be easily and quickly positioned.

Front view of the crusher according to the embodiment of the present invention Perspective view of the main body of the crusher Top view of the main body of the crusher Cross-sectional view of the main body of the crusher along the AA line of FIG. Perspective view of the main body of the crusher in the open state Perspective view of the lower housing showing details of the cover case The figure which shows the cover case positioning mechanism and the cover case before it is positioned | The figure which shows the cover case positioning mechanism and the cover case in the positioned state | cover case Left side view of the main body of the crusher in the closed state Left side view of the main body of the crusher in the fully open state Left side view of the main body of the crusher showing the state in which the pinch prevention lever is functioning. Perspective view showing another example of the first and second housing positioning mechanisms. Top view of the lower housing in which the first and second cover cases having different shapes are set in the crusher according to another embodiment of the present invention. Cross-sectional view of the lower housing just before the setting of the first cover case is completed Top view of the lower housing in which the first and second cover cases having different shapes are set in the crusher according to the different embodiment of the present invention. A perspective view showing a cover case support member in a state where the setting of the second cover case is completed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a crusher according to an embodiment of the present invention. The XYZ coordinate system shown in the figure is for facilitating the understanding of the embodiment according to the present invention, and does not limit the invention. Further, 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 crusher 10 is crushed by a main body 12 for crushing an object such as a runner generated by resin molding, a charging hopper 14 for charging the target into the main body 12, and a main body 12. It has a recovery hopper 16 for collecting the target.

FIG. 2 is a perspective view of the main body of the crusher, FIG. 3 is a top view of the main body, FIG. 4 is a cross-sectional view of the main body along the line AA of FIG. 5 is a perspective view of the main body in an open state. In addition, in FIGS. 2 to 5, in consideration of the legibility of the drawings, the components of the crusher that are not substantially involved in the invention are omitted.

As shown in FIG. 2, the main body 12 of the crusher 10 is a housing having a substantially cubic outer shape, and is composed of an upper housing 20 and a lower housing 22 on which the upper housing 20 is placed. ing.

As shown in FIGS. 2 and 4, the upper housing 20 includes an inlet 20a in which the target is inserted via the insertion hopper 14 facing upward. The lower housing 22 includes an outlet 22a that discharges the downwardly crushed object toward the recovery hopper 16.

In the case of the present embodiment, as shown in FIG. 2, the inlet 20a of the upper housing 20 has a size S1 in the front-rear direction (Y-axis direction) and a size S2 in the left-right direction (X-axis direction) of the crusher 10. Is a square shape equal to. Further, correspondingly, the input hopper 14 connected to the inlet 20a of the main body 12 includes a square discharge port (not shown). Therefore, the direction of the charging hopper 14 is changed according to the usage environment of the crusher 10, and the charging hopper 14 is rotated by 90 degrees around a rotation center line extending in the vertical direction (Z-axis direction), for example. Can be connected to the main body 12.

The upper housing 20 is placed on the lower housing 22 so as to be separable, whereby the main body 12 is closed. In the case of the present embodiment, as shown in FIGS. 2 and 5, the upper housing 20 is lowered via a support pin 24 provided on the rear surface of the lower housing 22 and extending in the left-right direction (X-axis direction). It is attached to the side housing 22. As a result, as shown in FIG. 5, the upper housing 20 is rotatably attached to the lower housing 22 about the support pin 24. As a result, the main body 12 can be opened with the front side open. As shown in FIG. 1, a handle 26 that the user grasps when opening the main body 12 is provided in the upper housing 20. Further, a lock lever 28 for keeping the main body 12 in a closed state is provided in the main body 12.

As shown in FIGS. 2 to 5, the main body 12 of the crusher 10 includes a plurality of fixed blades 30 arranged in the upper housing 20, a plurality of fine crushing rotary blades 32 for relatively finely crushing the object, and a plurality of fine crushing rotary blades 32. It is provided with a coarse crushing rotary blade 34 that crushes the object relatively coarsely.

The plurality of fixed blades 30 are plate-shaped and have comb-teeth-shaped cutting edges at their ends. Further, the plurality of fixed blades 30 are provided in the upper housing 20. In the case of this embodiment, two fixed blades 30 are provided for one fine crushing rotary blade 32.

Each of the plurality of finely crushed rotary blades 32 has a substantially cylindrical shape, and is provided with a large number of comb-teeth-shaped cutting edges attached to the outer peripheral surface thereof at regular intervals in the circumferential direction. The comb-shaped cutting edge of each of the finely crushed rotary blades 32 meshes with the comb-shaped cutting edge of the corresponding fixed blade 30.

Further, each of the plurality of finely crushed rotary blades 32 is attached to the rotary shaft 36. The rotary shaft 36 is rotatably supported by the lower housing 22 about a rotation center line C1 extending in the left-right direction (X-axis direction) of the crusher 10.

As the rotary shaft 36 rotates, a plurality of fine crushing rotary blades 32 rotate, and the cutting edges of the fixed blade 30 and the fine crushing rotary blade 32 that mesh with each other bite the target and finely crush it.

As shown in FIG. 1, the rotary shaft 36 has a right end driven and connected to a motor (not shown) in the motor unit 38 and a left end supported by a bearing (not shown) in the bearing unit 40. ing. The motor unit 38 and the bearing unit 40 are attached to the lower housing 22. Further, as shown in FIG. 1, in the case of the present embodiment, the bearing unit 40 can be tilted to the left side of the crusher 10 when the main body 12 is opened as shown in FIG. It is attached to the side.

As shown in FIG. 4, the object finely crushed by the fine crushing rotary blade 32 passes between the comb-shaped cutting edges of the fixed blade 30 by being pushed forward by the rake face 32a of the rotating fine crushing rotary blade 32. , Is conveyed toward the outlet 22a of the lower housing 22. Then, the object that has passed through the fixed blade 30 separates from the finely crushed rotary blade 32 due to its own weight and falls into the recovery hopper 16 via the outlet 22a. At this time, among the fixed blades 30, those on the rear side function as scrapers to prevent the crushed object from returning to the inlet 20a side.

In the case of the present embodiment, each of the plurality of coarse crushing rotary blades 34 has a shuriken shape having two cutting edges, and has a larger outer peripheral diameter than the fine crushing rotary blade 32.

Further, each of the plurality of coarse crushing rotary blades 34 is attached to the rotary shaft 36. Specifically, in the rotary shaft 36, one coarse crushing rotary blade 34 is arranged between two adjacent fine crushing rotary blades 32. As a result, the plurality of coarse crushing rotary blades 34 rotate between the two fixed blades 30 adjacent to each other in the extending direction (X-axis direction) of the rotation center line C1.

As the rotary shaft 36 rotates, the cutting edges of the plurality of coarse crushing rotary blades 34 roughly crush the target. Specifically, the size of the target that is on the fixed blade 30 and that the cutting edge of the fixed blade 30 and the cutting edge of the fine crushing rotary blade 32 cannot bite is set to a size that these cutting edges can bite. As described above, the coarse crushing rotary blade 34 roughly crushes.

A part of the object coarsely crushed by the coarse crushing rotary blade 34 stays on the fixed blade 30, and the rest is pushed toward the rake face 34a of the coarse crushing rotary blade 34 and conveyed toward the outlet 22a of the lower housing 22. Will be done. The portion of the coarse pulverization rotary blade 34 on the outlet 22a side, that is, substantially the lower half of the coarse pulverization rotary blade 34 is covered so that the object pushed by the rake surface 34a does not fall to the recovery hopper 16 via the outlet 22a. The cover case 42 is provided on the main body 12 of the crusher 10.

FIG. 6 is a perspective view of the lower housing showing the details of the cover case. In FIG. 6, in order to show the details of the cover case 42, the fine crushing rotary blade 32, the coarse crushing rotary blade 34, and the like are omitted.

As shown in FIG. 6, the cover case 42 has a semicircular shape when viewed in the extending direction (X-axis direction) of the rotation center line C1 of the rotation shaft 36. Specifically, the cover case 42 has 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 coarse crushing rotary blade 34 interposed therebetween, as shown in FIG. It surrounds the outer periphery of the coarse crushing rotary blade 34 and includes an arc-shaped bottom portion 42b in the extending direction of the rotation center line C1.

As shown in FIGS. 4 and 5, the rake face 34a of the rotating coarse crushing rotary blade 34 enters the cover case 42 from the front side of the cover case 42 and exits from the rear side of the cover case 42. The outer peripheral edge of the rotating coarse crushing rotary blade 34 moves along the bottom portion 42b of the cover case 42.

According to such a cover case 42, a part of the object crushed by the coarse crushing rotary blade 34 is pushed by the rake surface 34a of the rotating coarse crushing rotary blade 34 and enters the cover case 42. The object in the cover case 42 is lifted by the rake face 34a of the rotating coarse crushing rotary blade 34, escapes from the cover case 42, and is returned to the inlet 20a side of the fixed blade 30. Then, the returned object is finely crushed by the fixed blade 30 and the fine crushing rotary blade 32.

As shown in FIGS. 4 and 5, a pair of front side guide portions 20b for guiding an object pushed by the rake face 34a of the coarse crushing rotary blade 34 into the cover case 42 are provided in the upper housing 20. Further, a pair of rear side guide portions 20c that guide the object placed on the rake face 34a of the coarse crushing rotary blade 34 exiting from the cover case 42 to the inlet 20a side of the fixed blade 30 so as not to fall from the rake face 34a are on the upper side. It is provided in the housing 20.

The cover case 42 is detachably provided on the lower housing 22. Specifically, in the case of the present embodiment, as shown in FIGS. 4 and 6, a plurality of cover cases supporting the cover case 42 are provided on the front inner wall surface 22b and the rear inner wall surface 22c of the lower housing 22. A support member 44 is provided. In the case of this embodiment, two cover case support members 44 are provided for one cover case 42. The cover case support member 44 may be provided as a separate member from the lower housing 22. In this case, the cover case support member 44 is provided on the lower housing 22 via, for example, a bolt. Alternatively, the cover case support member 44 and the lower housing 22 may be integrated as a single component.

Each of the plurality of cover case support members 44 includes a receiving surface 44a that comes into contact with the outer peripheral surface 42c of the cover case 42 and receives the cover case 42. Specifically, each receiving surface 44a of the cover case support member 44 is a cover case 42 so that the cover case 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 case 42. It is composed of a curved surface having substantially the same curvature as the outer peripheral surface 42c of the above. However, the outer peripheral surface 42c of the cover case 42c does not have to be a curved surface, and may be, for example, a flat surface.

Further, as shown in FIG. 6, each of the plurality of cover case support members 44 has a cover case 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. It is provided with a pair of side stopper portions 44b that define the movable range of 42. Specifically, the pair of side stopper portions 44b face each other in the extending direction of the rotation center line C1. Further, the distance L between the pair of side stopper portions 44b facing each other is larger than the thickness W of the cover case 42 (the size in the extending direction of the rotation center line C1). As a result, the cover case 42 can move in the extending direction of the rotation center line C1 within the movable range in a state where the outer peripheral surface 42c is in contact with the receiving surface 44a of the cover case support member 44. The reason why the cover case 42 is supported by the cover case support member 44 in a state of being movable in the extending direction of the rotation center line C1 will be described later.

According to such a plurality of cover case support members 44, the cover case 42 can be positioned in the front-rear direction (Y-axis direction) and the height direction (Z-axis direction) of the crusher 10. On the other hand, the plurality of cover case support members 44 do not position the cover case 42 in the left-right direction of the crusher 10, that is, in the extending direction (X-axis direction) of the rotation center line C1.

As shown in FIGS. 4 and 5, a cover case positioning mechanism 20d for positioning the cover case 42 in the extending direction (X-axis direction) of the rotation center line C1 is provided in the upper housing 20. In the case of the present embodiment, the lower ends of the pair of front side guide portions 20b and the pair of rear side guide portions 20c in the upper housing 20 (the lower ends when the main body portion 12 is closed as shown in FIG. 2). The cover case positioning mechanism 20d is formed by a pair of inclined surfaces (second inclined surfaces) provided in the housing. When the main body 12 is in the closed state, each of the pair of inclined surfaces 20d faces diagonally downward and inward (the extending direction of the rotation center line C1 (X-axis direction) and the height of the crusher 10). On a plane (ZX plane) that includes a direction (Z-axis direction)).

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

FIG. 7A shows the cover case positioning mechanism and the cover case before it is positioned. FIG. 7B shows a cover case positioning mechanism and a cover case positioned in the cover case positioning mechanism.

As shown in FIG. 7A, the cover case 42 is set by the user on the receiving surface 44a of the cover case support member 44 in a state where the main body portion 12 is open, that is, the upper housing 20 is separated from the lower housing 22. At this time, the cover case 42 can be placed on the cover case support member 44 on either the left or right side (X-axis direction), and / or can be placed in an inclined posture. That is, the cover case 42 can be roughly set on the plurality of cover case support members 44 by the user.

When the user closes the main body 12, that is, when the upper housing 20 is placed on the lower housing 22, a pair of inclined surfaces 20d (or one inclined surface 20d) of the upper housing 20 immediately before that is a pair of cover cases 42. Contact the inclined surface 42d (or one of the corresponding inclined surfaces 42d). Due to the contact, the outer peripheral surface 42c of the cover case 42 is in a posture (normal posture) in which the outer peripheral surface 42c is in contact with the receiving surfaces 44a of the plurality of cover case support members 44 over the entire extending direction (X-axis direction) of the rotation center line C1. Be adjusted. At the same time, the cover case 42 is positioned at a position (normal position) where the side wall portion 42a of the cover case 42 and the coarse crushing rotary blade 34 do not come into contact with each other in the extending direction of the rotation center line C1. That is, when the user closes the main body 12, the cover case 42 is automatically positioned with respect to the extending direction (X-axis direction) of the rotation center line C1.

In order to realize such positioning, the cover case 42 is supported by the cover case support member 44 so as to be movable in the extending direction (X-axis direction) of the rotation center line C1. Further, as shown in FIG. 6, the pair of side stopper portions 44b in the cover case support member 44 rotate so that at least one of the pair of inclined surfaces 42d of the cover case 42 can contact the inclined surface 20d of the corresponding upper housing 20. The cover case 42 faces each other with a distance L so as to define the movable range of the cover case 42 in the extending direction of the center line C1.

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

As shown in FIG. 5, when the main body 12 is in the closed state, each of the pair of inclined surfaces 20d of the upper housing 20 which is the cover case positioning mechanism faces diagonally downward and inward. The pair of inclined surfaces 42d of the cover case 42 that come into contact with the pair of inclined surfaces 20d of the upper housing 20 are directed obliquely upward and outward. Alternatively, the pair of inclined surfaces of the upper housing (cover case positioning mechanism) is a pair of inclined surfaces facing outward, and the pair of inclined surfaces of the cover case in contact with the pair of inclined surfaces of the upper housing are inside. It may be a pair of inclined surfaces facing in the direction.

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

In the case of the present embodiment, as shown in FIGS. 2 and 5, the first housing positioning mechanism 46 and the second housing positioning are performed so that the upper housing 20 is placed in the positioned state with respect to the lower housing 22. The main body 12 includes a mechanism 48.

As shown in FIGS. 2 and 5, the first housing positioning mechanism 46 is provided on the upper engaging member 50 provided on the front side portion at the lower end of the upper housing 20 and on the front side portion on the upper end of the lower housing 22. The lower engaging member 52 is included.

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

The upper engaging member 50 that engages with the lower engaging member 52 extends in a direction (Y-axis direction) orthogonal to the extending direction (X-axis direction) of the rotation center line C1 and extends downward. A ridge portion 50a that engages with the groove 52a of the side engaging member 52 is provided.

By engaging such an upper engaging member 50 and a lower engaging member 52, the upper housing 20 is positioned with respect to the lower housing 22 in the extending direction (X-axis direction) of the rotation center line C1. Will be done.

As shown in FIG. 5, the second housing positioning mechanism 48 is provided on the upper engaging member 54 provided on the rear side portion at the lower end of the upper housing 20 and on the rear side portion on the upper end of the lower housing 22. Includes a lower engaging member 56.

In the case of the present embodiment, as shown in FIG. 6, the lower engaging member 56 provided in the lower housing 22 has a groove 56a extending in the extending direction (X-axis direction) of the rotation center line C1. Be prepared. Further, in the case of the present embodiment, the groove 56a has a V-shaped cross section.

As shown in FIG. 5, the upper engaging member 54 that engages with the lower engaging member 56 extends in the extending direction (X-axis direction) of the rotation center line C1 and is the lower engaging member. A ridge portion 54a that engages with the groove 56a of the 56 is provided.

By engaging such an upper engaging member 54 and a lower engaging member 56, the lower direction (Y-axis direction) is orthogonal to the extending direction (X-axis direction) of the rotation center line C1. The upper housing 20 is positioned with respect to the side housing 22.

The main body 12 of the crusher 10 is provided with some components for suppressing foreign matter such as a user's finger from being caught between the upper housing 20 and the lower housing 22 when the main body 12 is closed. Be prepared.

FIG. 8 is a left side view of the main body of the crusher in the closed state. FIG. 9 is a left side view of the main body of the crusher in the fully open state. FIG. 10 is a left side view of the main body of the crusher showing a state in which the pinch prevention lever is functioning. In FIGS. 8 to 10, the fine crushing rotary blade 32, the coarse crushing rotary blade 34, and the like are omitted.

As shown in FIGS. 1 and 8, a pinch prevention lever (pinching prevention member) 60 is provided on the front surface of the main body 12 of the crusher 10. Specifically, the pinch prevention lever 60 is attached to the front surface of the lower housing 22 so as to swing around the rotation center line parallel to the rotation center line C1. Further, the pinch prevention lever 60 contacts the upper housing 20 when the main body 12 is closed as shown in FIG. 8, and lower when the main body 12 is open as shown in FIG. A head portion 60a that moves above the side housing 22 is provided. The swing of the pinch prevention lever 60 in which the head portion 60a moves in this way is performed, for example, by using a spring (not shown) or by the weight of the head portion 60a itself.

As shown in FIG. 9, when the main body portion 12 is opened, that is, when the upper housing 20 is separated from the lower housing 22, the pinch prevention lever 60 swings and the head portion 60a moves above the lower housing 22. .. That is, the head portion 60a of the pinch prevention lever 60 enters between the upper housing 20 and the lower housing 22 so as to be detachable. As shown in FIG. 10, when the main body portion 12 is closed in that state, the head portion 60a of the pinch prevention lever 60 is sandwiched between the front side portion of the lower end of the upper housing 20, the lower housing 22 and the front side portion of the upper end. As a result, foreign matter such as a user's finger is suppressed from being caught between the front side portion of the lower end of the upper housing 20, the lower housing 22 and the front side portion of the upper end.

Further, as shown in FIGS. 8 to 10, a guard plate is provided so that foreign matter such as a user's finger does not enter between the rear portion of the lower end of the upper housing 20 and the rear portion of the upper end of the lower housing 22. The (guard member) 62 is attached to the left side surface of the main body portion 12 (the portion on the left side surface where the bearing unit 40 does not exist). Specifically, by covering the gap formed by the guard plate 62 separating the upper housing 20 and the lower housing 22, foreign matter is suppressed from entering the gap. Although not shown, a similar guard plate is attached to the right side surface of the main body 12.

Further, as shown in FIG. 9, when the main body portion 12 is in the fully open state (that is, when the upper housing 20 is maximally swiveled in the direction away from the lower housing 22), the upper housing 20 is the lower housing. The center of gravity G of the upper housing 20 is located on the rear side with respect to the support pin 24 in order to prevent the upper housing 20 from falling toward the front side due to its own weight. Therefore, in the case of the present embodiment, the upper housing 20 can rotate rearward about the support pin 24 at an angle exceeding 90 degrees with respect to the lower housing 22. As a result, the entire upper housing 20 is located on the rear side with respect to the support pin 24.

According to the present embodiment as described above, in the crusher 10, the user can easily and in a short time set the cover case 42 covering the outlet side portion of the coarse crushing rotary blade 34 on the main body portion 12. At the same time, the cover case 42 can be easily and quickly positioned in the extending direction of the rotation center line C1 of the coarse pulverization rotary blade 34.

Although the present invention has been described with reference to the above-described embodiments, the embodiments of the present invention are not limited thereto.

For example, in the case of the above-described embodiment, as shown in FIG. 4, there are two cover case support members 44 that receive the cover case 42 of the coarse crushing rotary blade 34, but one may be used.

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

engaging members

52, 56 in the first and second

housing positioning mechanisms

46, 48 are provided with

grooves

52a, 56a, and the upper side is provided. The engaging

members

50 and 54 include

ridges

50a and 54a. However, the embodiment of the present invention is not limited to this. For example, in the first and second housing positioning mechanisms, the upper engaging member may include a groove and the lower engaging member may include a ridge. Further, for example, the upper engaging member of the first housing positioning mechanism and the lower engaging member of the second housing positioning mechanism include one of a groove and a ridge portion, and the lower engaging member of the first housing positioning mechanism. And the upper engaging member of the second housing positioning mechanism may include the other of the grooves and ridges.

Further, in the case of the above-described embodiment, as shown in FIGS. 5 and 6, the first housing positioning mechanism 46 arranged on the front side of the main body 12 sets the upper housing 20 to the rotation center line C1 of the rotary blade. Is positioned with respect to the lower housing 22 in the extending direction (X-axis direction). Further, the second housing positioning mechanism 48 arranged on the rear side of the main body 12 relates the upper housing 20 in a direction (Y-axis direction) orthogonal to the extending direction of the rotation center line C1 of the rotary blade. It is positioned with respect to the lower housing 22. However, the embodiment of the present invention is not limited to this. On the contrary, the first housing positioning mechanism positions the upper housing in a direction orthogonal to the extending direction of the rotation center line of the rotary blade, and the second housing positioning mechanism is the rotation center line of the rotary blade. The upper housing may be positioned in the extending direction.

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

engaging members

52, 56 in the first and second

housing positioning mechanisms

46, 48 have a V-shaped

groove

52a, 56a is provided, but the embodiment of the present invention is not limited to this. For example, as shown in FIG. 11, in another example of the first and second housing positioning mechanisms 146 and 148, the lower

engaging members

152 and 156 include

grooves

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

ridge portions

150a and 154a that engage with the

arcuate grooves

152a and 156a.

As described above, the first and second housing positioning mechanisms can have various forms, and the present invention can be used as long as the upper housing can be positioned with respect to the lower housing at least in the extending direction of the rotation center line of the rotary blade. The embodiment is not limited to the shape and mounting position of the upper engaging member and the lower engaging member.

Further, even without the first and second housing positioning mechanisms, if 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 blade, the first and second housings are positioned. It is also possible to omit the housing positioning mechanism of. For example, when the main body portion is configured so that the upper housing moves up and down with respect to the lower housing, the first and second housing positioning mechanisms can be omitted in some cases.

In addition, in the case of the above-described embodiment, as shown in FIGS. 5 and 6, the cover case 42 for each of the two coarse crushing rotary blades 34 is common. However, the embodiment of the present invention is not limited to this. For example, when the shapes of the two coarse pulverization rotary blades are different (for example, when they are different due to a manufacturing error (tolerance)), a dedicated cover case, that is, a different cover case is used for each of the two coarse pulverization rotary blades. May be good. However, in this case, it is necessary not to set a cover case dedicated to one of the two coarse pulverization rotary blades on the other coarse pulverization rotary blade.

FIG. 12 is a top view of the lower housing in which the first and second cover cases having different shapes are set in the crusher according to another embodiment of the present invention. Further, FIG. 13 is a cross-sectional view of the lower housing immediately before the setting of the first cover case is completed. In addition, in FIG. 12 and FIG. 13, the fine pulverization rotary blade, the coarse pulverization rotary blade and the like are omitted.

The crusher according to another embodiment shown in FIGS. 12 and 13 has first and

second cover cases

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

second cover cases

142A and 142B are planes orthogonal to the extending direction (X-axis direction) of the rotation center line C1 of the coarse grinding rotary blade. It has a plane-symmetrical shape with reference to.

Specifically, each of the first and

second cover cases

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

As the first and second engaging portions that engage with the rod-shaped protrusions 142e of the first and

second cover cases

142A and 142B, for example, they extend in the front-rear direction (Y-axis direction) of the crusher.

Grooves

122d and 122e are provided on the front side of the upper surface 122f of the lower housing 122. Specifically, in a state where the first cover case 142A is supported by the two cover case support members 44, the groove portion 122d is formed at a position on the lower housing 122 capable of engaging with the rod-shaped protrusion 142e. Has been done. Further, in a state where the second cover case 142B is supported by the two cover case support members 144, the groove portion 122e is formed at a position where it can engage with the rod-shaped protrusion 142e.

With such a configuration, it becomes impossible to alternately set the first and

second cover cases

142A and 142B in the lower housing 122. That is, when the first and

second cover cases

142A and 142B are staggered, the rod-shaped protrusions 142e do not engage with the

grooves

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

second cover cases

142A and 142B can be set with respect to the corresponding coarse crushing rotary blades without being set alternately.

Further, it is suppressed that the first and

second cover cases

142A and 142B are set upside down.

The rod-shaped protrusions 142e provided on the first and

second cover cases

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

When the rod-shaped protrusions 142e of the first and

second cover cases

142A and 142B have different cross-sectional shapes, for example, when one is rectangular and the other is inverted triangular, the lower housing 122 that engages with them. The cross-sectional shapes of the grooves may also be different from each other, one may be rectangular and the other may be inverted triangular. In this case, the position where the rod-shaped protrusion 142e is provided in each of the first and

second cover cases

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

Further, as shown in FIGS. 12 and 13, the rod-shaped protrusions 142e and the

groove portions

122d and 122e engaged with the rod-shaped protrusions 142e may be provided on the rear side instead of being provided on the front side of the lower housing 122.

That is, while the

first cover cases

142A and 142B have different shapes, the lower housing 122 has a first engaging portion capable of engaging only with the first cover case 142A, and a second cover case 142B. A second engaging portion that can be engaged with the chisel may be provided.

FIG. 14 is a top view of the lower housing in which the first and second cover cases having different shapes are set in the crusher according to the different embodiment of the present invention. Further, FIG. 15 is a perspective view showing a cover case support member in a state where the setting of the second cover case is completed.

The crusher according to another embodiment shown in FIGS. 14 and 15 has first and

second cover cases

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

second cover cases

242A and 242B are planes orthogonal to the extending direction (X-axis direction) of the rotation center line C1 of the coarse grinding rotary blade. It has a plane-symmetrical shape with reference to.

Each of the first and

second cover cases

242A and 242B is provided with a protrusion 242e on the front side thereof, which projects in opposite directions with respect to the extending direction (X-axis direction) of the rotation center line C1. In the case of the present embodiment, the protrusion 242e of the first cover case 242A projects to the left side of the lower housing 222, and the protrusion 242e of the second cover case 242B projects to the right side of the lower housing 222.

In the case of the embodiment shown in FIGS. 14 and 15, three types of cover

case support members

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

second cover cases

242A and 242B. ing.

The cover case support member 244A supports the front side portion of the first cover case 242A, and has a pair of

stopper portions

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

The cover case support member 244B supports the front side portion of the second cover case 242B, and has a pair of stopper portions 244b and 242c facing each other in the thickness direction (X-axis direction) via the second cover case 242B. Be prepared. One stopper portion 244c of the cover case support member 244B is made smaller than the other stopper portion 244b in order to avoid interference with the protrusion 242e of the second cover case 242B.

The cover case support member 244C includes a pair of stopper portions 242b that support the rear portions of the first and

second cover cases

242A and 242B and face each other in the thickness direction (X-axis direction).

second cover cases

242A and 242B in the lower housing 222. That is, when the first and

second cover cases

242A and 242B are staggered, their respective protrusions 242e come into contact with the stopper portions 244b of the cover case

support member grooves

244A and 244B, and receive the cover

case support members

244A and 244B. It cannot be placed on the surface 244a. As a result, the first and

second cover cases

242A and 242B can be set with respect to the corresponding coarse crushing rotary blades without being set alternately.

Further, it is suppressed that the first and

second cover cases

242A and 242B are set upside down.

Alternatively, the cover case support member may be provided with protrusions (convex portions) having different shapes or provided at different positions, and recesses corresponding to the first and second cover cases may be provided.

Further, as shown in FIGS. 14 and 15, the protrusions 242e and the cover

case support members

244A and 244B may be provided on the rear side instead of being provided on the front side of the lower housing 222.

That is, while the

first cover cases

242A and 242B have different shapes, the pair of first cover

case support members

244A and 244C have a shape in which they engage only with the first cover case 242A, and the pair of cover case support members. The 244B and 244C may have a shape that engages only with the second cover case 242B.

That is, in a broad sense, the present invention is a crusher for crushing an object, in which an upper housing provided with an inlet into which the object is inserted and the upper housing are placed so as to be separable, and the crushed object is discharged. A lower housing having an outlet to be formed, a comb-toothed fixed blade arranged in the upper housing, and an object arranged in the lower housing, which meshes with the fixed blade to be relatively finely crushed. A comb-shaped finely crushed rotary blade that conveys the finely crushed object toward the outlet and a rotation center line that is arranged in the lower housing and is the same as the finely crushed rotary blade to rotate the object. A cover case having a coarse crushing rotary blade for relatively coarse crushing and a cover case for covering the outlet side portion of the coarse crushing rotary blade, and the lower housing includes a receiving surface for receiving the cover case. Cover case positioning provided with a support member and positioning the cover case with respect to the extending direction of the rotation center line by contacting the cover case when the upper housing is mounted on the lower housing. Equipped with a mechanism.

The present invention is applicable to a crusher provided with a cover case that partially covers the rotary blade.

20 Upper housing 20d Cover case positioning mechanism 22 Lower housing 30 Fixed blade 32 Fine crushing rotary blade 34 Coarse crushing rotary blade 42 Cover case 44 Cover case support member 44a Receiving surface C1 Rotation center line

Claims

A crusher that crushes objects
An upper housing with an inlet into which the object is inserted
A lower housing in which the upper housing is spaced apart and has an outlet from which the crushed object is discharged.
A comb-shaped fixed blade arranged in the upper housing and
A comb-tooth-shaped finely crushed rotary blade arranged in the lower housing, which meshes with the fixed blade to crush the object relatively finely, and conveys the finely crushed object toward the outlet.
A coarse crushing rotary blade arranged in the lower housing, rotating around the same rotation center line as the fine crushing rotary blade, and relatively coarsely crushing the object.
It has a cover case that covers the outlet side portion of the coarse crushing rotary blade.
The lower housing comprises a cover case support member that includes a receiving surface that receives the cover case.
A pulverization provided with a cover case positioning mechanism for positioning the cover case in the extending direction of the rotation center line by contacting the cover case when the upper housing is mounted on the lower housing. Machine.
The cover case is provided with a pair of first inclined surfaces at the upper end thereof, which are directed diagonally upward and are directed to either outward or inward.
The cover case positioning mechanism is composed of a pair of second inclined surfaces that face each of the pair of inclined surfaces of the cover case while facing diagonally downward and facing either outward or inward. The crusher according to claim 1.
The cover case support member includes a pair of side stopper portions that face each other in the extending direction of the rotation center line with the cover case interposed therebetween.
The pair of side stoppers define a movable range of the cover case with respect to 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. The crusher according to claim 2, wherein the crushers face each other at a distance as described above.
The upper engaging member provided in the upper housing and the lower engaging member provided in the lower housing and engaging with the upper engaging member are included, and the upper and lower engaging members are engaged with each other. The crusher according to any one of claims 1 to 3, further comprising a first housing positioning mechanism for positioning the upper housing with respect to the lower housing in the extending direction of the rotation center line.
One of the upper and lower engaging portions in the first housing positioning mechanism is provided with a groove extending in a direction orthogonal to the extending direction of the rotation center line, and the other is orthogonal to the groove. The crusher according to claim 4, further comprising a ridge extending in a direction.
The upper engaging member provided in the upper housing and the lower engaging member provided in the lower housing and engaging with the upper engaging member are included, and the upper and lower engaging members are engaged with each other. The invention according to any one of claims 1 to 5, further comprising a second housing positioning mechanism that positions the upper housing with respect to the lower housing in a direction orthogonal to the extending direction of the rotation center line. Crusher.
One of the upper and lower engaging portions in the second housing positioning mechanism is provided with a groove extending in the extending direction of the rotation center line, and the other is of the rotation center line capable of engaging with the groove. The crusher according to claim 6, further comprising a ridge portion extending in the extending direction.
The coarse grinding rotary blade includes first and second coarse grinding rotary blades.
The cover cases are different in shape from each other and include a first cover case that covers the first coarse pulverization rotary blade and a second cover case that covers the second coarse pulverization rotary blade.
The cover case support member includes a first cover case support member that supports the first cover case and a second cover case support member that supports the second cover case.
The cover case positioning mechanism includes a first cover case positioning mechanism for positioning the first cover case and a second cover case positioning mechanism for positioning the second cover case.
A claim that the lower housing comprises a first engaging portion that can engage only with the first cover case and a second engaging portion that can engage only with the second cover case. Item 2. The crusher according to any one of Items 1 to 7.
The coarse grinding rotary blade includes first and second coarse grinding rotary blades.
The cover cases are different in shape from each other and include a first cover case that covers the first coarse pulverization rotary blade and a second cover case that covers the second coarse pulverization rotary blade.
The cover case support member includes a first cover case support member that supports the first cover case and a second cover case support member that supports the second cover case.
The cover case positioning mechanism includes a first cover case positioning mechanism for positioning the first cover case and a second cover case positioning mechanism for positioning the second cover case.
The first cover case support member has a shape that engages only with the first cover case.
The crusher according to any one of claims 1 to 7, wherein the second cover case support member has a shape that engages only with the second cover case.
The crusher according to any one of claims 1 to 9, further comprising a pinch prevention member that removably enters between the upper housing and the lower housing when they are separated from each other.
The crusher according to any one of claims 1 to 10, further comprising a guard member covering a gap formed by separating the upper housing and the lower housing.
It has a support pin provided on the rear surface of the lower housing and extending in the extending direction of the rotation center line.
The upper housing is attached to the lower housing via the support pins so as to be rotatable around the support pins.
The invention according to any one of claims 1 to 11, wherein the center of gravity of the upper housing is located on the rear side with respect to the support pin when the upper housing is maximally swiveled in a direction away from the lower housing. Crusher.