WO2008029541A1

WO2008029541A1 - Crusher

Info

Publication number: WO2008029541A1
Application number: PCT/JP2007/060636
Authority: WO
Inventors: Syuji Shinagawa; Saiji Yamashita
Original assignee: Kabushikikaisha Matsui Seisakusho
Priority date: 2006-09-05
Filing date: 2007-05-24
Publication date: 2008-03-13
Also published as: CN101511482A; TWI398302B; CN101511482B; JP5216592B2; TW200817092A; JPWO2008029541A1

Abstract

In a crusher (H), a fixed blade (B) and a rotary blade (A) are installed in a casing (10) at the lower part of which an outlet (30) is formed, an object (S) to be crushed and put into the casing (10) is crushed by the cooperation of these blades, and the crushed object is discharged from the outlet (30). The fixed blade (B) is formed in a comb shape so that openings (B1) allowing the blade parts (3) of the rotary blade (A) to pass therethrough are formed at predetermined intervals. The rotary blade (A) is so formed that the blade parts (3) the ridges and the valleys (31) of which are aligned with each other are projected along the same axis in multiple rows at predetermined intervals from the peripheral surface of a cylindrical body (1) at the center of which a shaft hole (2) is formed. The valleys (31) of the blade parts (3) of the rotary blade (A) are recessed from the peripheral surface of the cylindrical body (1) toward the shaft hole (2) side, and made to communicate with each other through through-grooves (5) traversing the cylindrical body (1) parallel with the shaft hole (2).

Description

Specification

Powder stone wall

Technical field

[0001] The present invention relates to, for example, cooperation between a rotary blade provided in a casing and a fixed blade, which is a by-product (sprung runner or the like) generated by molding a thermoplastic synthetic resin product. The present invention relates to a pulverizer configured to pulverize by operation and to discharge the pulverized product from the downward force of the casing.

Background art

[0002] Conventionally, a casing is continuously provided at a lower portion of a hopper that accommodates an object to be crushed, and the object to be crushed dropped from the hopper is cooperated by a fixed blade provided in the casing and a rotary blade. A pulverizer configured to pulverize the material to be pulverized and also discharge the discharge loca formed below the casing is known.

FIG. 8 is a vertical cross-sectional view of a rotary blade in a conventional crusher, (a) is a cross-sectional view of the main part showing a state in which the rotary blade is cut longitudinally at the portion of the blade, and (b) is a view of the rotary blade. It is principal part sectional drawing which shows the state longitudinally cut in the part of the annular groove formed between blade parts.

According to the pulverizer 100, as shown in FIG. 8 (a), when the object to be crushed S is dropped on the rotary blade 101 rotating in the direction of the arrow in the figure by the rotation axis K. The object to be crushed S is guided toward the fixed blade 102 formed in a comb blade shape by a plurality of blade portions 131.

[0005] By the cooperation of the blade part 131 and the fixed blade 102, the object S to be crushed is sheared and pulverized to become a pulverized object S ', and the pulverized object S' is in the valley S1 of the blade part 131. While being guided, it passes through the opening 112 of the fixed blade 102 and is discharged downward.

[0006] In the rotary blade 101, an annular groove 141 orthogonal to the rotation axis is formed on the same axis between the blade portion 103 and another blade portion (not shown) adjacent thereto. However, the material to be crushed after grinding S

In order to prevent them from falling into the annular groove 141 and being discharged without being pulverized, it is usual that the groove width is formed as small as possible.

However, as shown in FIG. 8 (b), when the object to be crushed S is crushed, fine crushed debris P is generated. As the key advances, the annular groove gradually becomes 1 It accumulates on the bottom of 41 or discolors while staying on the fixed blade.

[0008] However, if such fine pulverized waste P increases, when the discharged pulverized material S is reused as a molding material, the force density changes and molding becomes unstable. Problems arise.

[0009] Therefore, the present applicant forms a plurality of recesses in such an annular groove 141, and guides the crushed debris P generated during grinding from the annular groove 141 to these recesses. An application has already been filed for a cutting machine that enables discharge (see, for example, Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 2000-329294

Disclosure of the invention

Problems to be solved by the invention

[0010] However, this cutting machine has a so-called dimple structure in which the recess formed in the annular groove is surrounded by a wall surface and formed as an independent depression, so that fine crushing is performed. When pressed with a fixed blade with the debris buried, for example, crushed debris accumulates in the same way as mud clogs in a recess on the surface of a golf ball, and it may not be possible to discharge smoothly.

[0011] In addition, when manufacturing a rotary blade, it is troublesome in manufacturing to manufacture a circular groove with many independent recesses, and there is still room for improvement in this respect. It was.

[0012] The present invention is intended to solve all of the hard problems at once, and fine crushed debris does not accumulate in the annular groove and does not stay on the fixed blade for a long time during pulverization. Provide a crusher that can be easily manufactured.

Means for solving the problem

[0013] Therefore, in order to achieve the above object, the present invention is proposed,

The pulverizer according to claim 1 is provided with a fixed blade and a rotary blade in a casing provided with a discharge port on the lower side, and in cooperation with them, the powdered material put into the casing is ground into a powder frame. In the pulverizer that also discharges the discharge loca, the fixed blade is formed in a comb blade shape in which openings that allow the blade portion of the rotary blade to pass are formed at predetermined intervals, and the rotary blade is centered. A plurality of blades having a crest and a trough aligned on the outer peripheral surface of the cylindrical body having the shaft hole are projected in multiples on the same axis with an annular groove interposed therebetween. The troughs of the parts are recessed toward the axial hole side from the outer peripheral surface of the cylindrical body, and are communicated by a through groove that crosses the annular groove.

[0014] The pulverizer according to claim 2 is provided with a fixed blade and a rotary blade in a casing provided with a discharge port on the lower side. In the crusher configured to discharge the discharge loca as a frame, the fixed blade is formed in a comb blade shape in which openings that allow the blade portion of the rotary blade to pass are formed at predetermined intervals, and the rotary blade is A plurality of blades having peaks and valleys are arranged on the outer peripheral surface of the cylindrical body having a shaft hole in the center so that the annular grooves are interposed on the same axis, and the valleys are aligned in an oblique linear direction. It consists of a helical blade with multiple protrusions,

The valleys of the blade portions of the rotary blade are recessed toward the shaft hole side with respect to the outer peripheral surface of the cylindrical body, and the annular groove communicates with a through groove that runs diagonally straight.

[0015] The pulverizer according to claim 3 is the pulverizer according to claim 1 or 2, wherein the depth of the through groove is shorter than the diameter of the sprue runner.

[0016] According to a fourth aspect of the present invention, there is provided a pulverizer according to any one of the first to third aspects, wherein the angle formed by the rear end of the through groove and the bottom surface of the annular groove is an acute angle. In addition, an auxiliary blade is formed at the rear end of the through groove.

The invention's effect

[0017] The present invention has the following effects.

According to the pulverizer according to claim 1, the valleys between the blade portion of the rotary blade and the other blade portion provided adjacent to the shaft hole of the rotary blade are closer to the shaft hole than the outer peripheral surface of the cylindrical body. It is possible to make a structure in which it is recessed and is communicated with a through groove that crosses the annular groove.

[0018] Therefore, even if fine crushed debris generated during pulverization falls into the annular groove, it is guided to the through groove with the rotation of the rotary blade, buried there, and passes under the fixed blade. Can be discharged into the casing.

[0019] Therefore, fine crushed debris does not accumulate in the annular groove of the rotary blade and cause clogging. Also, the crushed debris does not stay on the fixed blade and the crushed material is not discolored or deteriorated.

[0020] Further, since the through groove is structured to communicate in a direction (longitudinal direction) that crosses the shaft hole in parallel, the rotary blade has a structure compared to a rotary blade having a structure in which independent dimple grooves are scattered. Made of It can be easily manufactured without changing the manufacturing process.

[0021] As described above, according to the present invention, it is possible to reliably prevent fine pulverized debris from accumulating in the annular groove or staying on the fixed blade, and to be easily manufactured.

[0022] According to the pulverizer according to claim 2, the plurality of blade portions are configured to be a rotary blade having a helical structure in which a plurality of blade portions are coaxially projected so that the valleys thereof are aligned in an oblique linear direction. In the rotary blade having such a structure, since it is engaged with an arbitrary blade portion and another blade portion force fixing blade adjacent thereto with a time difference, for example, a long crushed object such as a sprue runner is used. A so-called diagonal cut can be performed in which an object is sequentially cut with its one end force toward the other end.

[0023] Therefore, even if the blade portion adjacent in the longitudinal direction is an object to be pulverized having a relatively long size, it can be easily cut by oblique cutting, and the rotational torque applied to the rotary blade can be reduced.

[0024] Further, by such oblique cutting, the remaining object to be crushed after being cut and sheared by an arbitrary blade portion and a fixed blade moves so as to be driven into an adjacent blade portion, Since the cutting and shearing are performed sequentially in cooperation with each other, since the cutting effect is high with less friction against the material to be crushed than by shearing alone, the generation of fine crushed waste can be reduced.

[0025] Further, even if fine crushed debris is dropped into the annular groove of the rotary blade during pulverization, the fine crushed debris is formed in a through groove formed at a position deeper than the outer peripheral surface of the cylindrical body of the rotary blade. As a result, the downward force of the fixed blade also falls into the casing, and the discharge loca can be reliably discharged.

[0026] According to the pulverizer according to claim 3, since the depth of the through groove is formed shorter than the diameter of the sprue runner, even if the sprue runner falls into the through groove, a part of it protrudes. Therefore, it can be securely caught and cut and sheared by the fixed blade corresponding to the annular groove.

[0027] According to the pulverizer according to claim 4, the angle formed by the rear end of the through groove on the open side and the outer peripheral surface of the cylindrical body that is continuous therewith, that is, the bottom surface of the annular groove, is formed as an acute angle. In addition, since the auxiliary blade is configured at the rear end of the through groove, the object to be crushed in the through groove can be cut and sheared by the cooperation of the auxiliary blade and the fixed blade.

Brief Description of Drawings

FIG. 1 is an overall perspective view showing an example of a pulverizer H according to the present invention.

[Fig. 2] Fig. 2 is a plan view of the casing as viewed from above with the hopper shown in Fig. 1 opened. FIG.

FIG. 3 is a partial perspective view showing a combined state of the rotary blade and the fixed blade shown in FIG. 2.

FIG. 4 is a partial plan view showing a combined state in which a part of FIG. 2 is enlarged.

FIG. 5 is an exploded perspective view showing a state where the rotary blade and the fixed blade shown in FIGS. 2 to 4 are separated.

[FIG. 6] FIGS. 6 (a) and 6 (b) are cross-sectional views schematically showing the structure of the rotary blade and fixed blade shown in FIGS. 2 to 5, and FIG. FIG. 4 is a cross-sectional view of the main part showing a state in which the rotary blade is cut vertically at the blade part, and (b) is a cross-sectional view of the main part showing a state cut vertically at the annular groove formed between the blade parts. .

FIG. 7 is a schematic cross-sectional view in which (a) and (b) compare cross-sectional shapes of an annular groove of the present invention and a conventional annular groove, and (a) is an annular groove of the present invention. (B) is a schematic cross-sectional view showing the cross-sectional shape of a conventional annular groove.

[FIG. 8] FIG. 8 is a longitudinal sectional view of a rotary blade in a conventional pulverizer, (a) is a cross-sectional view of the main part showing a state in which the rotary blade is longitudinally cut at the portion of the blade portion, and (b) is It is principal part sectional drawing which shows the state longitudinally cut in the part of the annular groove formed between the blade parts of a rotary blade.

Explanation of symbols

A Rotary blade

B Fixed blade

H Crusher

S Object to be ground (before grinding)

S 'Ground (after grinding)

P Grinding waste

10 Casing

20 Honoichi

30 outlet

1 Cylindrical body

la its outer surface

2 shaft hole 3 Blade

31 Valley

4 annular groove

5 Through groove

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the pulverizer according to the present invention will be described with reference to the drawings.

Example 1

FIG. 1 is an overall perspective view showing an example of a pulverizer H according to the present invention, and FIG. 2 shows a state in which the hopper 20 shown in FIG. It is a top view.

[0032] This pulverizer H has a casing 10 disposed below a hopper 20 that can be opened and closed. When a material to be crushed S such as a sprue runner is introduced from an inlet 21 above the hopper 20, the inside of the casing 10 The object to be crushed S is pulverized by the cooperation of a rotary blade A and a fixed blade B, which will be described later, provided in the above, and the pulverized object S1 is discharged from a discharge port 30 formed below the casing 10.

FIG. 3 is a partial perspective view showing a combined state of the rotary blade A and the fixed blade B shown in FIG. 2, and FIG. 4 is a partial plan view showing a combination example of the rotary blade A and the fixed blade B. FIG. 5 is an exploded perspective view showing a state where the rotary blade A and the fixed blade B shown in FIGS. 2 to 4 are separated.

[0034] FIGS. 6 (a) and 6 (b) are cross-sectional views schematically showing the structure of the rotary blade A and the fixed blade B shown in FIGS. a) is a cross-sectional view of the main part showing the state in which the rotary blade A is vertically cut at the blade part, and FIG. 6 (b) is a main part showing the state in which the rotary groove A is cut at the annular groove formed between the blade parts. FIG. Hereinafter, the present invention will be further described with reference to these drawings.

In the example of FIG. 2, in the casing 10, three pulverizing parts are configured in which a pair of fixed blades B are disposed on both sides of the rotary blade A.

In the fixed blade B, openings B1 through which the blade 3 of the rotary blade A passes are formed at predetermined intervals, and between these openings B1, the inner side of the annular groove 4 formed on the rotary blade A side is formed. It is formed in the shape of a comb blade with a protruding portion B2 protruding so as to be in close proximity so as to enter.

One rotary blade A has a plurality of blade portions 3 in which peaks and troughs 31 are aligned with an outer peripheral surface la of a cylindrical body 1 having a shaft hole 2 formed at the center, and a space between annular grooves 4 on the same axis. And make multiple protrusions Furthermore, the troughs 31 of the blade portions 3 projecting on the same axis and the annular groove 4 are recessed toward the shaft hole 2 side from the outer peripheral surface la of the cylindrical body 1 and traverse parallel to the shaft hole 2 The through-grooves 5 are formed so as to communicate with each other.

In the embodiment shown in FIG. 2, the rotary blade A has a plurality of blade portions 3 in which the valleys 31 of the blade portions 3 are parallel to the shaft hole 2 and a plurality of annular grooves 4 are orthogonal to the axis. The through-blade 5 is a force provided in parallel with the shaft hole 2 so as to intersect these annular grooves 4.The rotary blade A shown in the embodiment shown in FIGS. This shows a helical structure with multiple blades 3 protruding so that the valleys 31 of the blade 3 are aligned in an oblique linear direction that is not parallel to the shaft hole 2, and the through groove 5 As shown in FIG. 4, it is formed along an oblique straight line along the axial hole 2 along 31.

[0038] Since the cylindrical body 1, the blade portions 3, 3 'and the annular groove 4 are integrally formed, the cylindrical body 1 does not mean a complete cylindrical shape.

[0039] Next, the shape of the through groove 5 will be described.

[0040] The depth of the through groove 5 may be formed so as to be recessed toward the axial hole 2 side from the bottom surface of the annular groove 4 formed on the same surface as the outer peripheral surface la of the cylindrical body 1. It is formed to be shorter than the diameter of the sprue runner S to be crushed.

[0041] Therefore, in the structure having such a structure, even if the sprue runner falls into the through groove 5 of the rotary blade A, a part of the spru runner protrudes to the surface side, so that the blade portion 3 of the rotary blade A and the fixed blade B It can be cut and sheared by the cooperation.

[0042] The through groove 5 can have any cross-sectional shape, and may be a simple semicircular shape. However, in this embodiment, as shown in FIG. An angle Θ formed by the rear end 51 and the annular groove 4 continuing to the rear is formed at an acute angle, and an auxiliary blade 3 la is formed at the rear end 51 of the through groove 5.

[0043] With such a structure, the auxiliary blade 31a of the through-groove 5 does not wait for the object to be crushed S fitted in the through-groove 5 to be crushed by the cooperation of the blade portion 3 and the fixed blade B. Corresponding to this, in cooperation with the protrusion B2 of the fixed blade B, it can be cut and sheared and pulverized.

In addition, in the case where the rotary blade A has a helical structure and the through grooves 5 are formed so as to be aligned obliquely along the blade portion 3, the blade portion 3 of the rotary blade A is fixed to the fixed blade B. Time lag For example, a long crushed object such as a sprue runner is cut in order from one end to the other. In addition, even if crushed debris is generated during pulverization, it can be dropped into the through groove 5 and discharged, so there are advantages such as less accumulation and a more useful pulverizer can be provided.

[0044] Fig. 7 (b) shows a cross-sectional shape of a conventional annular groove shown for comparison with Fig. 7 (a), and corresponding portions are denoted by the same reference numerals. Therefore, the description is omitted.

[0045] The crusher H according to the present invention configured as described above operates in the following manner.

[0046] The object S to be crushed, such as a sprue runner, introduced from the inlet 21 above the hopper 20 is guided into the casing 10 and rotated by the rotary shaft K as shown in FIG. 6 (a). Is falling on the rotary blade A.

[0047] Then, when these objects to be pulverized S are guided toward the fixed blade B by the plurality of blade portions 3 as the rotary blade A rotates, the blade portions 3 and the fixed blade B1 cooperate. Is cut and sheared by the blade, part of which is bounced by the fixed blade B, rolls on the rotary blade A, and finally falls into the trough 31 of the blade portion 3 and the through groove 5 as the crushed material S ' After passing below the opening B1 of the fixed blade B, it falls into the casing 10 and is discharged.

[0048] On the other hand, the crushed debris P generated during pulverization is repelled by the protrusion B2 of the fixed blade B and the blade 3 of the rotary blade A as the rotary blade A rotates, and finally becomes fine crushed debris. Then, when buried in the through groove 5 formed in the annular groove 4, it passes below the protrusion B2 of the fixed blade B, falls into the casing 10 and is discharged.

[0049] Therefore, according to such a dusting machine H, even if fine dust debris P generated at the time of dusting falls into the annular groove 5, it is moved and buried in the through groove 5 as the rotary blade A rotates. Since it can pass through the lower part of the protruding part B2 of the fixed blade B and smoothly fall into the casing 10, it can accumulate fine crushed debris P in the annular groove 5 or stay on the fixed blade. It is not left in the state.

[0050] Further, the through groove 5 is formed deeper than the annular groove 4, is formed to communicate with the shaft hole 2 in parallel or transversely in an oblique linear direction, and has a clearance field on the through groove 5 side of the blade portion 3. As a result, the fine pulverized debris P is moved through the annular groove 4 and buried in the groove 5 to rotate the rotary blade. It can be smoothly dropped and discharged as it rolls.

Furthermore, the through groove 5 has a structure in which the through groove 5 communicates with the shaft hole 2 in parallel or obliquely in a straight line direction, so that the manufacturing process of the rotary blade A is reduced as compared with a dimple structure that forms a recess. Easy to manufacture without significant changes.

Claims

The scope of the claims

[1] A fixed blade and a rotary blade are provided in a casing provided with a discharge port below, and in cooperation, the object to be crushed in the casing is pulverized and the discharge loca is also discharged. I went to the flour mill

The fixed blade is formed in a comb blade shape in which openings that allow the blade portion of the rotary blade to pass are formed at predetermined intervals.

In the rotary blade, a plurality of blade portions in which crests and troughs are aligned are provided on the outer peripheral surface of a cylindrical body having a shaft hole at the center, and multiple protrusions are coaxially projected at predetermined intervals with an annular groove interposed. The crusher has a structure in which the valleys of the blade portions of the rotary blade are recessed toward the shaft hole side from the outer peripheral surface of the cylindrical body and communicated by a through groove that crosses the annular groove.

[2] A fixed blade and a rotary blade are provided in a casing provided with a discharge port below, and in cooperation, the object to be crushed in the casing is pulverized and the discharge rocker is also discharged. I went to the flour mill

The rotary blade has a plurality of blade portions having peaks and valleys on an outer peripheral surface of a cylindrical body having a shaft hole in the center, and an annular groove is interposed on the same axis. It is composed of a rotating blade with a helical structure that is projected multiple times to align with

A crusher having a structure in which valleys of blade portions of the rotary blade are recessed closer to the shaft hole side than the outer peripheral surface of the cylindrical body, and the annular groove communicates with a through groove that runs diagonally straight.

[3] In either claim 1 or 2,

A crusher in which the depth of the through groove is shorter than the diameter of the sprue runner.

[4] In any one of claims 1 to 3,

A crusher in which an angle formed by the rear end of the through groove and the bottom surface of the annular groove is formed at an acute angle, and an auxiliary blade is formed at the rear end of the through groove.