JP6197004B2 - Crushing method, crushing device and rough crushing blade - Google Patents

Description

  The present invention relates to a pulverizing method, a pulverizing apparatus, and a coarse pulverizing blade for pulverizing and pulverizing plastic materials and the like, and more specifically, to uniformizing the particle size of a pulverized product and suppressing the generation of pulverized powder.

  At the time of molding a plastic product, the path for injecting the molten resin material into the mold is also solidified and taken out and separated from the product. The solidified part of this path is called a sprue runner, and after being pulverized by a pulverizer or the like, it is mixed into virgin pellets and reused as a recycled material. What is pulverized by the pulverizer is called a pulverized material. Many of such pulverizers are, for example, as shown in Patent Document 1 below, a main casing that forms a pulverization tank, and a claw for crushing on the surface that is supported substantially horizontally and rotatably in the pulverization tank. And a rotating shaft on which the crushing blade is formed, a bearing that supports the rotating shaft, a fixed blade on which the claw and the crushing blade can be passed, and a guide for preventing the object to be crushed from falling A plate is provided, and the object to be ground is pulverized when the pulverizing blade passes through the fixed blade.

JP 2006-122798 A

  However, there is no difference in the size of the cut grains (pulverized products) in order to accurately and smoothly supply to the injection molding machine, light weight or confusion when reused. Grain quality, such as being complete, is required. In addition, when pulverizing an object to be crushed, in addition to the grains cut to a predetermined size depending on the size of the pulverizing blade, small sections and granular pulverized powder (hereinafter referred to as “pulverized powder”) are always generated. However, in consideration of the finished product, the less pulverized powder is generated, the better. In this regard, according to the technique described in Patent Document 1 described above, by improving the size and shape of the grooves (spaces) between the pulverizing blades, the generation of pulverized material having a predetermined length or more can be prevented, and the particle size can be reduced. The quality is improved and the generation of powder is reduced.

  However, the object that naturally falls onto the constantly rotating crushing blade does not necessarily enter the predetermined groove, and the particle size varies depending on the cutting position, so that the desired particle size can be obtained by one-time cutting. There are things that cannot be done. Also, the object may escape from the groove, and in this case, it cannot be cut to a desired particle size at once. In these cases, the fixed blade must be passed several times. Furthermore, as described above, the generation of pulverized powder increases by cutting many times. As described above, unevenness in the particle size of the pulverized product, generation of pulverized powder, and the like affect the quality of the molded product, and therefore it is important to reduce as much as possible.

  The present invention focuses on the above points, and provides a pulverization method, a pulverization apparatus, and a coarse pulverization blade capable of improving the particle quality of the pulverized product and reducing the generation of pulverized powder. Is the purpose.

The pulverization apparatus of the present invention includes a main body casing including a crushing tank in which an object is crushed, a crushing tank that is continuously formed below the crushing tank and in which the object is crushed, and the crushing A first rotating shaft that is supported in the tank so as to be substantially horizontally and continuously rotatable, and has one or more crushing blades for roughly crushing the object on the surface, and provided in the crushing tank. A first fixed blade portion provided with a notch blade portion that meshes with the coarse crushing blade, a first drive means for continuously rotating the first rotating shaft, and in the crushing tank, A number of pulverizing blades that are supported substantially horizontally , in parallel with the first rotating shaft, and capable of intermittent rotation at a position below the first rotating shaft, and pulverize the object on the surface. A second rotating shaft provided, and a notch provided in the crushing tank and meshing with the crushing blade A second fixed blade section parts are provided, and a second drive means for intermittently rotating the second rotating shaft, provided with a rotation of the second in the intermittent rotation drive While the shaft is stopped, the crushed object enters the groove between the pulverizing blades .

One of the main forms is that when the outer peripheral edge of the crushing blade passes over the crushing blade of the second rotating shaft, the object before passing through the second fixed blade is used. The first rotating shaft and the coarse crushing blade are disposed at a position where the upper portion is closed, and the coarse crushing blade is the second fixed blade portion according to the timing at which the second rotating shaft rotates intermittently. The upper part of the object before passing through is closed . Another embodiment is characterized in that the second rotating shaft is intermittently driven within the range of the circumferential length of the outer peripheral edge of the crushing blade.

Yet another embodiment, the second rotating shaft so as to intermittently rotate in conjunction with rotation of the first rotary shaft, by providing a transmission mechanism for transmitting the rotation of said first driving means The motor and the motor of the second driving means are made common. Still another embodiment is characterized in that when a plurality of the crushing blades are provided, a plurality of crushing blades are arranged so as to cause a phase difference in the circumferential direction of the first rotation shaft. In still another embodiment, a plurality of crushing blades on the second rotating shaft are arranged on the second rotating shaft so as to cause a phase difference in the circumferential direction of the second rotating shaft. It is characterized by.

Cracking blades of the present invention is a cracking blades used in the grinding apparatus, crude crushed blade, prevents the object before pulverization provided in the pulverizing vessel falls down the guide The plate has a length from the plate to the second fixed blade portion in the circumferential direction of the first rotary shaft, and when passing over the grinding blade of the second rotary shaft, the second The upper portion of the object before passing through the fixed blade portion is closed.

In the pulverization method of the present invention, a second rotation shaft provided with a plurality of pulverization blades is substantially horizontal to the first rotation shaft below a first rotation shaft provided with one or more rough crushing blades. In addition, an object that has been crushed and dropped by the crushing blade of the first rotating shaft and the first fixed blade portion that meshes with the crushing blade is provided to be approximately parallel to the crushing of the second rotating shaft. While crushing by the blade and the second fixed blade portion meshing with the crushing blade, the first rotation shaft is continuously rotated, the second rotation shaft is intermittently rotated, and the second rotation shaft is intermittently rotated . While the rotating shaft is stopped, the crushed object enters the groove between the crushing blades .

  One of the main forms is that when the outer peripheral edge of the crushing blade passes over the crushing blade of the second rotating shaft, the object before passing through the second fixed blade is used. The first rotating shaft and the coarse crushing blade are disposed at a position where the upper portion is closed, and the coarse crushing blade is the second fixed blade portion according to the timing at which the second rotating shaft rotates intermittently. The upper part of the object before passing through is closed. Another embodiment is characterized in that the second rotating shaft is intermittently driven within the range of the circumferential length of the outer peripheral edge of the crushing blade. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

According to the present invention, a second rotating shaft provided with a plurality of pulverizing blades is provided below a first rotating shaft provided with one or more crushing blades. The object that was crushed by the first fixed blade portion and dropped was pulverized by the pulverization blade and the second fixed blade portion in the pulverization tank. At that time, since the first rotating shaft is continuously rotated and the second rotating shaft is intermittently rotated (intermittently rotates in a certain direction ), the second rotating shaft is stopped. The crushed object easily enters the groove between the pulverizing blades. Thereafter, by intermittently driving the second rotating shaft, the amount of pulverized material that can be cut in one cut increases, and it becomes possible to improve the particle size quality and reduce the generation of pulverized powder. In addition, by pressing the object before passing through the second fixed blade portion from above with the crushing blade, jumping of the object is suppressed, and more reliable cutting is possible.

It is a perspective view which shows the whole structure of the grinding | pulverization apparatus of Example 1 of this invention. It is sectional drawing which cut | disconnected the principal part of the grinding apparatus of the said Example 1 along the rotating shaft. It is sectional drawing which cut | disconnected said FIG. 2 along the # A- # A line and looked at the arrow direction. It is a figure which shows the structure of the crushing roller of the said Example 1, (A) is a perspective view, (B) is sectional drawing which cut | disconnected said (A) along the # B- # B line | wire and looked at the arrow direction. is there. It is a schematic diagram which shows an example of the rotational drive mechanism of the said Example 1. FIG. It is a figure which shows the effect | action of the said Example 1, (A-1), (A-2), (B-1) and (B-2) are figures which show a present Example, (C-1) and (C C-2) is a diagram showing a comparative example. It is a figure which shows the other Example of this invention.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing the overall configuration of the crushing apparatus of the present embodiment. FIG. 2 is a cross-sectional view of the pulverizing apparatus according to the present embodiment cut along the rotation axis. FIG. 3 is a cross-sectional view taken along the line # A- # A and viewed in the direction of the arrow. It is sectional drawing. 4A and 4B are diagrams showing the structure of the crushing roller of the present embodiment, where FIG. 4A is a perspective view, and FIG. 4B is a sectional view taken along line # B- # B in FIG. It is sectional drawing. FIG. 5 is a schematic diagram showing an example of the rotation drive mechanism of the present embodiment. 6 (A-1), (A-2), (B-1) and (B-2) are diagrams showing the operation of this embodiment, and (C-1) and (C-2) are It is a figure which shows the effect | action of a comparative example.

  As shown in FIG. 1, in the pulverizing apparatus 10 of the present embodiment, a main body casing 12 that pulverizes an object 90 to be pulverized, such as a sprue runner, to a predetermined particle size (not large or long) is supported by a plurality of legs 11. Has been. A recovery container 84 for recovering the crushed material 94 after processing is provided below the main body casing 12. In addition, a hopper 82 having a charging port for loading the object 90 is provided above the main body casing 12. The main casing 12 is continuously provided below the crushing tank 14 in which the object 90 is crushed and the crushing tank 14, and the object (crushed object 92) that has passed through the crushing tank 14. It has a two-tank structure consisting of a crushing tank 16 for crushing.

  As shown in FIG. 2, a substantially cylindrical crushing roller 20 is supported on the opposing side surfaces 14 </ b> A and 14 </ b> B of the crushing tank 14 so as to be substantially horizontal and rotatable in the crushing tank 14. . The rotating shaft 20A of the crushing roller 20 is rotatably supported by bearings 26A and 26B provided on the side surfaces 14A and 14B. The surface of the crushing roller 20 is provided with a plurality of crushing blades 22A and 22B for roughly crushing the object 90 input from the hopper 82. In the illustrated example, the rough crushing blades 22 </ b> A and 22 </ b> B are provided in pairs, a total of four, at positions facing each other across the crushing roller 20. In the present embodiment, the rough crushing blades 22 </ b> A and 22 </ b> B are provided at the same position with respect to the circumferential direction of the crushing roller 20.

  On the other hand, on the crushing tank 14 side, as shown in FIG. 3, fixed blade portions 28, 30 having notched blade portions 28A, 30A meshing with the rough crushing blades 22A, 22B on the side surfaces 14C, 14D are inclined surfaces. Are provided. In the present embodiment, the two fixed blade portions 28 and 30 are provided, but only one notch is provided on either one (for example, the fixed blade portion 30) side to prevent the object 90 from falling. It is good also as a guide plate for doing. The crushing roller 20 is driven to rotate by the drive of the motor 62 being transmitted to the rotary shaft 20A by a rotation transmission mechanism 60 provided outside the main body casing 12.

  As shown in FIG. 2, a crushing roller 40 is supported inside the crushing tank 16 disposed below the crushing tank 14 so as to be substantially horizontal and intermittently rotatable below the crushing roller 20. ing. The rotation shaft 40A of the crushing roller 40 is rotatably supported by bearings 50A and 50B provided on the side surfaces 16A and 16B. Further, on the surface of the crushing roller 40, a number of crushing blades 42 are provided for cutting the crushed material 92 crushed by the crushing roller 20 and the fixed blade portion 28 into a desired particle size. On the other hand, on the pulverization tank 16 side, as shown in FIGS. 3 and 4A and 4B, a fixed blade portion 52 having a notch blade portion 52A that meshes with the pulverization blade 42 above the side surface 16C. It is provided so as to form an inclined surface. A guide plate 54 having a notch 54A is provided above the other side surface 16D at a position facing the fixed blade 52. The guide plate 54 is for preventing the crushed material 92 before pulverization from falling downward.

  In this embodiment, as shown in FIG. 4 (A), a grinding blade row 48 in which a plurality of grinding blades 42 are arranged at substantially equal intervals along the axial direction is formed on the surface of the grinding roller 40. Further, a plurality of the pulverizing blade rows 48 are arranged at appropriate intervals in the circumferential direction of the pulverizing roller 40. The arrangement of the pulverizing blades 42 can be changed as appropriate. In this embodiment, in order to allow the grinding blade row 48 to pass, the notch blade portion 52A provided in the fixed blade portion 52 has a comb-teeth shape as shown in FIG. Similarly, the cutout portion 54A provided in the guide plate 54 has a comb shape.

  The crushed material 92 enters the first groove 44 formed between the pulverizing blade rows 48 and the second groove 46 between the adjacent pulverizing blade rows 48, and passes through the fixed blade portion 52 in this state. By doing so, it is cut into a desired particle size. Such a crushing blade 42 may be formed integrally with the crushing roller 40, but the crushing roller 40 is formed by stacking a plurality of disks on which the crushing blade 42 and grooves 44 and 46 are formed. You may do it. The distance between the crushing blades 42 and the depth of the groove are set to the dimensions disclosed in, for example, Japanese Patent No. 479292 so that the final pulverized product 94 has a uniform particle size. The groove 44 may be formed in an approximately U shape that is slightly inclined to form an inclined surface so that the crushed material 92 can easily enter. The rotation transmission mechanism 60 transmits the rotation of the motor 62 to the rotation shaft 40A of the crushing roller 40 through a plurality of gears and a Geneva mechanism (Geneva mechanism) 80. In other words, the crushing roller 40 is intermittently rotated (intermittent rotation in a certain direction) in conjunction with the continuous rotation of the crushing roller 20.

  FIG. 5 shows an example of the rotation transmission mechanism 60. In this embodiment, a motor 62, gears 66 and 68, and a geneva mechanism 80 are provided inside the casing 61 shown in FIG. In the present embodiment, a geared motor with a speed reducer is used as the motor 62. A gear 66 is provided at the tip of the output shaft 64 of the motor 62, and the crushing roller 20 is continuously rotated by driving the motor 62 by connecting the rotating shaft 20 </ b> A of the crushing roller 20 to the gear 66. To do. A driving gear 70 constituting a Geneva mechanism 80 is engaged with the gear 66 at the tip of the output shaft 64 of the motor 62 via another gear 68.

  A convex portion 72 is provided on one main surface of the driving gear 70, and a pin 74 is provided at a portion other than the convex portion 72. The pin 74 is for entering the slot 78 of the driven gear 76 provided at the end of the rotating shaft 40A of the crushing roller 40 to rotate the driven gear 76, and the driving gear 70 is continuously rotated. Then, it is transmitted to the driven gear 76 and the rotating shaft 40A as intermittent rotation. The intermittent rotation mechanism by the Geneva mechanism 80 is known. As described above, by using the Geneva mechanism 80 and the motor 62 with a speed reducer, the crushing roller 40 can be intermittently rotated in conjunction with the continuous rotation of the crushing roller 20 by one drive source. The number of rotations of the crushing roller 40 with respect to one rotation of the crushing roller 20 can be appropriately changed by setting the gear ratio, increasing or decreasing the number of slots 78 of the driven gear 76, and the like.

  In the present embodiment, in addition to the intermittent rotation of the crushing roller 40 as described above, the crushing material 92 can be pushed in from above by the rough crushing blades 22A and 22B, and jumping can be suppressed. Specifically, as shown in FIGS. 6B-1 and 6B-2, when the outer peripheral edge 24 of the coarse crushing blades 22A, 22B passes over the crushing roller 40, the The crushing roller 20 and the rough crushing blades 22A and 22B are arranged so as to block the upper side of the crushed material 92 before passing through the fixed blade portion 52. The outer peripheral edge 24 of the rough crushing blades 22A and 22B has a predetermined length (or width) with respect to the circumferential direction of the crushing roller 20, and the range of the length of the outer peripheral edge 24 The crushing roller 40 is intermittently driven.

  Next, the operation of this embodiment will be described with reference to FIG. First, a power supply (not shown) is turned on, the motor 62 is driven to start continuous rotation of the crushing roller 20, and intermittent rotation of the crushing roller 40 is started. Then, the object 90 is inserted from the insertion port of the hopper 82. The thrown object 90 is roughly crushed by the crushing blades 22 </ b> A and 22 </ b> B and the fixed blade portions 28 and 30 that continuously rotate in the crushing tank 14. The crushed crushed material 92 naturally falls into the pulverization tank 16 below the crushing tank 14.

  At this time, since the crushing roller 40 is intermittently rotated, compared with the case where the crushing roller 40 is always rotated, there is a time allowance for the crushed material 92 falling from above to enter between the crushing blades 42. (See Fig. 6 (A-1) and (A-2)). Then, as shown in the figure, the crushing roller 40 is rotated within a certain range in a state in which the crushing blade 42 is surely inserted, so that it is carried to the fixed blade 52 and the crushing blade 42 is moved to the notch blade 52A. When passing, it is cut to a predetermined length. Then, the crushed pulverized product 94 is collected from the back side of the fixed blade portion 52 to a collection container 84 provided below the pulverization tank 16, and sent to a molding machine or the like by an appropriate means as necessary. Used.

  Further, according to this embodiment, the crushing blades 22A and 22B are positioned above the crushed material 92 before passing through the fixed blade portion 52 in accordance with the timing at which the crushing roller 40 rotates intermittently. Further, the arrangement of each member, the rotational speed of the rotary shafts 20A and 40A, the gear ratio, and the like are set. Note that the crushing blades 22A and 22B do not necessarily have to come upward when the crushing roller 40 is intermittently driven. For example, the crushing blade 22A is once per 2 to 3 times of intermittent driving of the crushing roller 40. , 22B may come upward. Alternatively, the crushing roller 40 may be intermittently driven at a rate of once per 2 to 3 passes of the coarse crushing blades 22A and 22B.

  As described above, when the crushing roller 40 is intermittently driven, the state in which the crushing blades 22A and 22B are positioned above the crushed material 92 while passing through the fixed blade portion 52 is shown in FIG. As shown in (B-1) and (B-2). 6 (C-1) and 6 (C-2) show comparative examples. In the comparative example shown in FIGS. 6C-1 and 6C-2, the crushing blade 100 has a shape that does not block the upper portion between the fixed blade portion 52 and the guide plate 54, and therefore the crushing roller 40 When the is driven, the crushed material 92 that has entered between the pulverizing blades 42 pops out, which may prevent reliable cutting. On the other hand, in this embodiment, as shown in FIG. 6 (B-2), the outer peripheral edge 24 of the coarse crushing blades 22A and 22B is located above the crushed material 92 before passing through the fixed blade 52. Since the arrangement and shape are closed, the crushed material 92 that has entered between the crushing blades 42 is pressed from above so that it does not jump out. For this reason, it can cut | disconnect to a desired particle size more reliably by one cut.

Thus, according to the first embodiment, there are the following effects.
(1) A crushing roller 40 provided with a number of crushing blades 42 is provided below the crushing roller 20 provided with the crushing blades 22A, 22B, and the crushing blades 22A, 22B and the fixed blades in the crushing tank 14 are provided. The crushed material 92 crushed and dropped by the portions 28 and 30 was crushed by the pulverization blade 42 and the fixed blade portion 52 in the pulverization tank 16. At this time, since the crushing roller 20 is continuously rotated and the crushing roller 40 is intermittently rotated, the crushing material 92 easily enters the groove between the crushing materials 42 while the crushing roller 40 is stopped. . Thereafter, by intermittently driving the pulverizing roller 40, the amount of pulverized material that can be cut into a desired particle size by one cut increases. For this reason, while improving particle size quality, generation | occurrence | production of a pulverized powder can be reduced.

(2) Since the outer peripheral edge portion 24 of the coarse crushing blades 22A and 22B is used to block the crushing material 92 before passing through the fixed blade portion 52 of the crushing roller 40, the crushing material 92 of the crushing blade 42 It can be pressed so as not to jump out from the groove between them. For this reason, it can cut | disconnect more reliably by one cut, and the further improvement of a particle size quality and generation | occurrence | production reduction of a pulverized powder are attained.
(3) Since the two fixed blade portions 28 and 30 are provided on the side surface of the crushing tank 14, the crushing efficiency is good.
(4) Since the geared motor and the Geneva mechanism 80 are used for the rotation transmission mechanism 60, continuous rotation of the crushing roller 20 and intermittent rotation of the crushing roller 40 can be performed at a timing according to the single motor 62. It becomes.
(5) The crushing roller 40 is intermittently driven within the range of the length in the circumferential direction of the outer peripheral edge 24 of the crushing blades 22A and 22B.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The shapes and dimensions shown in the above embodiments are examples, and may be appropriately changed as necessary. For example, the lengths (or widths) of the outer peripheral edge portions 24 of the crushing blades 22A and 22B shown in the above-described embodiments are merely examples, and can be appropriately set and changed within a range where similar effects can be obtained.
(2) In the above embodiment, by using the Geneva mechanism 80, the continuous rotation of the crushing roller 20 and the intermittent rotation of the crushing roller 40 are performed by one motor 62, but this is also an example, and the crushing roller 20 A driving source may be provided for each of the crushing rollers 40, and a means for controlling the timing of their rotation may be provided. The Geneva mechanism 80 is also an example, and other known various mechanisms and drive sources may be used as long as they can be intermittently driven.
(3) The rotation transmission mechanism 60 shown in the above embodiment is also an example, and the design can be changed as appropriate within a range where the same effect can be obtained. For example, although a geared motor with a speed reducer is used as the motor 62 in the embodiment, this is also an example, and the speed reducer and the motor may be provided separately. In the first embodiment, the gear 68 is used to transmit the rotation of the gear 66 to the driving gear 70 of the Geneva mechanism 80. However, this is also an example and does not prevent the use of a belt, a chain, or the like. Absent.

(4) In the above embodiment, the crushing roller 20 is provided with a pair of coarse crushing blades 22A and 22B (four in total) and at the same position in the circumferential direction of the crushing roller 20, but this is also an example. And may be changed as needed. For example, as shown in FIG. 7A, only a pair of crushing blades 22A may be provided, or although not shown, only one crushing blade 22A may be provided. Further, as shown in FIG. 7B, the pair of crushing blades 22A and 22B is attached with a phase difference in the circumferential direction so that each blade is shifted by 90 degrees when viewed from the axial direction. Also good. The example shown in FIGS. 7C-1 and 7C-2 is an example in which a pair of crushing blades 22A to 22C are provided, but they are not shifted equally by 120 degrees, but are arranged unevenly. Yes. In this manner, the object 90 can easily enter by providing a phase difference in the circumferential direction. Further, since the number of times of crushing with one blade is reduced, the power of the driving source can be reduced. Furthermore, by providing a plurality of crushing blades, any of the plurality of crushing blades can surely press the crushed material 92 when the crushing roller 40 is intermittently driven.
(5) In the above-described embodiment, a plurality of pulverization blade rows 48 are provided on the surface of the pulverization roller 40. However, this is also an example and does not prevent the provision of only one row. The rotation amount for intermittent driving may be changed as appropriate. Further, similarly to the rough crushing blade, a plurality of crushing blades may be arranged so that a phase difference is generated in the circumferential direction of the crushing roller 40.

(6) In the above embodiment, the two fixed blade portions 28 and 30 are provided in the crushing tank 14, but only one is a fixed blade portion and the other is a guide plate for preventing the object 90 from falling. Also good.
(7) In the above embodiment, the crushing roller 20 and the crushing roller 40 are rotated in the same direction, but this is also an example and does not prevent the rotation in the opposite direction.
(8) Although the intermittent drive of the crushing roller 40 shown in the above embodiment is generally a constant speed drive, it prevents the non-constant speed drive (variable speed from the intermittent drive start to the intermittent drive stop). It is not a thing. In particular, if the crushing roller 40 is driven slowly at the start of intermittent driving, the crushed material 92 is likely to enter through the grooves between the crushing blades 42. Regarding the continuous rotation of the crushing roller 20, the speed may be constant or unequal.
(9) The pressing of the crushed material 92 from above by the rough crushing blades 22A and 22B shown in the above embodiment is also an example, and the timing can be appropriately changed as necessary. For example, each time the crushing roller 40 is driven intermittently, the crushing blades 22A and 22B may pass upward, or may pass once for several intermittent drives of the crushing roller 40. Conversely, the crushing roller 40 may be intermittently driven at a single timing with respect to several rotations of the coarse crushing blades 22A and 22B.
(10) In the above embodiment, the crushing roller 40 is intermittently rotated. However, the circumferential length of the outer peripheral edge 24 of the coarse crushing blades 22A, 22B is equal to or greater than a predetermined length, and the fixed blade 52 If the upper part of the crushed material 92 before passing through can be blocked, even if the crushing roller 40 is continuously rotated, the same effect as in the first embodiment can be obtained.

  According to the present invention, the second rotating shaft provided with a plurality of grinding blades is provided below the first rotating shaft provided with one or more crushing blades, and the first rotating shaft is roughened. The object that has been crushed and dropped by the crushing blade and the first fixed blade portion in the crushing tank is crushed by the crushing blade of the second rotating shaft and the second fixed blade portion in the crushing layer. . At that time, since the first rotating shaft is continuously rotated and the second rotating shaft is intermittently rotated, the crushed object is crushed while the second rotating shaft is stopped. It becomes easy to enter the groove between them. Thereafter, by intermittently driving the second rotating shaft, the amount of pulverized material that can be cut in one cut increases, and the particle size quality can be improved and the generation of pulverized powder can be reduced. Further, since the object before passing through the second fixed blade is pressed from above by the rough crushing blade, the jumping of the object can be suppressed and more reliable cutting can be performed. It can be applied to the use of a crushing apparatus that performs the above.

10: Crushing device 11: Foot 12: Main body casing 14: Crushing tank 14A-14D: Side face 16: Crushing tank 16A-16D: Side face 20: Crushing roller 20A: Rotating shaft 22A, 22B, 22C: Coarse crushing blade 24: Outer edge Part 26A, 26B: Bearing 28, 30: Fixed blade part 28A, 30A: Notch blade part 40: Crushing roller 40A: Rotating shaft 42: Crushing blade 44, 46: Groove 48: Crushing blade row 50A, 50B: Bearing 52: Fixed Blade part 52A: Notch blade part 54: Guide plate 54A: Notch part 60: Rotation transmission mechanism 61: Casing 62: Motor 64: Output shaft 66, 68: Gear 70: Driving gear 72: Convex part 74: Pin 76: Follower Gear 78: Slot 80: Geneva mechanism (Geneva mechanism)
82: Hopper 84: Collection container 90: Object 92: Crushed material 94: Crushed material 100: Crushing blade

Claims (10)

A main body casing comprising a crushing tank in which the object is crushed, and a crushing tank that is continuously formed below the crushing tank and in which the object is crushed;
In the crushing tank, supported in a substantially horizontal and continuously rotatable manner, a first rotating shaft provided with one or more crushing blades on the surface for crushing the object,
A first fixed blade portion provided in the crushing tank and provided with a notch blade portion that meshes with the rough crushing blade;
First driving means for continuously rotating the first rotating shaft;
The object is supported in the crushing tank at a position below the first rotation shaft, substantially horizontal , substantially parallel to the first rotation shaft, and capable of intermittent rotation. A second rotating shaft provided with a plurality of crushing blades for crushing
A second fixed blade provided in the crushing tank and provided with a notch blade that meshes with the crushing blade;
Second driving means for intermittently rotating the second rotating shaft;
With
A pulverizing apparatus, wherein the crushed object enters a groove between the pulverizing blades while the second rotating shaft is stopped in the intermittent rotation driving . When the outer peripheral edge of the crushing blade passes over the crushing blade of the second rotating shaft, the first chamfering blade is positioned at a position that covers the top of the object before passing through the second fixed blade. 1 rotating shaft and the crushing blade are arranged ,
The crushing according to claim 1, wherein the crushing blade closes the top of the object before passing through the second fixed blade portion according to the timing at which the second rotation shaft rotates intermittently. apparatus. The cracking blades in the circumferential direction of the length range of the outer peripheral edge portion of claim 2 Symbol mounting of the milling device is characterized by intermittently driving the second rotary shaft. By providing a transmission mechanism that transmits rotation so that the second rotation shaft rotates intermittently in conjunction with the rotation of the first rotation shaft,
The pulverizer according to any one of claims 1 to 3 , wherein the motor of the first driving unit and the motor of the second driving unit are shared. When the cracking blades is provided with a plurality of, to produce a phase difference in the circumferential direction of the first axis of rotation, one of the claims 1-4, characterized in that a plurality of cracking blades A crushing apparatus according to claim 1. The multiple crushing blades on the second rotation shaft are arranged on the second rotation shaft so as to cause a phase difference in the circumferential direction of the second rotation shaft. The crusher as described in any one of 1-5 . A rough crushing blade used in the crushing device according to claim 2 or 3 ,
Crude crushing blade,
The length from the guide plate provided in the crushing tank to prevent the object before crushing from dropping downwards to the second fixed blade portion is set in the circumferential direction of the first rotating shaft. Have
A coarse crushing blade of a crushing device, wherein when passing over the crushing blade of the second rotating shaft, the top of the object before passing through the second fixed blade portion is blocked. Below the first rotating shaft provided with one or more coarse crushing blades, a second rotating shaft provided with a number of crushing blades is provided substantially horizontally and substantially parallel to the first rotating shaft,
An object that has been crushed and dropped by the crushing blade of the first rotating shaft and the first fixed blade portion meshing with the crushing blade, the crushing blade of the second rotating shaft, and the crushing blade And crushing with the second fixed blade portion meshing with
Continuously rotating the first rotating shaft, intermittently rotating the second rotating shaft,
A crushing method characterized in that the crushed object enters a groove between the crushing blades while the second rotation shaft is stopped in the intermittent rotation . When the outer peripheral edge of the crushing blade passes over the crushing blade of the second rotating shaft, the first chamfering blade is positioned at a position that covers the top of the object before passing through the second fixed blade. 1 rotating shaft and the crushing blade are arranged,
The crushing according to claim 8 , wherein the crushing blade closes the top of the object before passing through the second fixed blade portion according to the timing at which the second rotation shaft rotates intermittently. Method. The crushing method according to claim 9 , wherein the second rotating shaft is intermittently driven within a range of a circumferential length of an outer peripheral edge portion of the rough crushing blade.

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