JPS6341069Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a slitter type crusher, and is used for crushing plastic runners, defective molded products, etc.

(Prior Art) A slitter type crusher, for example, a slitter type crusher as shown in FIG. c are arranged in parallel, and the rotary blade b of each rotor c is connected to the other rotor c.
A scraper e is placed in the groove between the sides of adjacent rotary blades b to make the rotors c interlock with each other, and a scraper e acts as a scraper on the groove of the rotor c, and a scraper e is placed below the rotor c for particle size control. Some devices are equipped with a screen (not shown).

By the way, in the past, the scraper e performed the scraping action on the side opposite to the occlusal part of the rotor c, so that the peeled matter peeled off by the scraper e was blocked by the screen on the front side of the scraper e. The particles tend to accumulate on the top, and this is one of the factors that hinders good grinding operations.

Furthermore, the technique disclosed in Japanese Utility Model Publication No. 58-6502 is significant as a solution to the above-mentioned problems.

That is, it is equipped with a pair of front and rear scrapers that act as scrapers on the grooves on the material discharge side near the occlusal part of the rotor, and is also equipped with a material particle size regulating screen on the outer periphery of the rotor on the material discharge side.

(Problems to be Solved by the Invention) Although the technology described in the above-mentioned publication is meaningful in its own way, the pair of front and rear scrapers are integrally constructed, and moreover, the grill plate serving as the screen is also integrally constructed with the scraper.

Therefore, if one of the pair of front and rear scrapers becomes worn out or chipped, the other scraper and grille plate must also be replaced, which is very difficult to replace because they are heavy objects. Not only that, but it is also uneconomical.

In addition, scrapers do not necessarily wear out evenly between the front and rear pairs, and each scraper is often different, and for this reason, it is necessary to adjust each scraper individually, but this is impossible. .

(Means for Solving the Problems) The present invention was devised in view of the above-mentioned circumstances, and its feature is that the rotor, which is made up of rotary blades arranged in the axial direction, is arranged in parallel in front and rear pairs. By arranging them in parallel and positioning the rotary blade of each rotor in the groove between the adjacent rotary blade side surfaces of the other rotor,
The rotors are arranged in an interlocking shape, and near the interlocking part and on the material discharge side, there is a pair of front and rear scrapers that act as scrapers on the grooves of each rotor, and there is also a particle size control screen on the outer periphery of the rotor on the material discharge side. A mounting portion having a convex cross section projecting upward is installed on the lower side of the occlusion of both rotors by connecting the center portions of the lower ends of both side walls of the rotor housing in the front-rear direction, and the mounting portion Each scraper is individually adjustable in the vertical direction on each side of the upper protruding part, and is tightened together with the end flange of the screen using front and rear bolts, so that each end flange and the upper protruding part of the mounting part are connected to each other. An adjusting tool is provided between each scraper and the front and rear protrusions of the mounting part to hold each scraper over substantially the entire length in the width direction, and to adjust the vertical movement of each scraper individually. The exposed portion exposed in the direction is covered with an end flange. Hereinafter, a first embodiment in which the present invention is applied to a slitter-type crusher for crushing runners, defective molded products, etc. will be explained based on the drawings of Figures 1 to 8. 1 is a hollow rectangular parallelepiped housing; There are two doors on the front and back sides that can be opened and closed.
is provided.

Reference numeral 3 denotes a pair of front and rear rotors that are mutually driven to rotate inward, and are mounted in parallel with each other via bearings 4 inside the housing 1 . The rotor 3 is rotatably driven by a motor via a transmission mechanism 5 consisting of gears, a chain winding mechanism, etc., and rotary blades 7 and distance collars 8 are alternately fitted onto a rotating main shaft 6 in the axial direction. They can be rotated together by a key 9 or spline connection. The rotary blade 7 of each rotor 3 is located in the groove 10 between the sides of the rotary blade 7 on the other rotor 3, so that both rotors 3 are interlocked with each other, and the rotary blade 7 of each rotor 3 is Corresponding rotary blade 7 of the other side rotor 3
and its sides are said to have a sliding occlusion. On the outer periphery of the rotary blade 7, retraction claws 11 for drawing the pulverized material between the two rotors 3 are integrally formed at equal intervals in the circumferential direction.

Reference numeral 12 denotes a mounting portion, which connects the lower end portions of both side walls of the housing 1 at the center in the front-rear direction, and is located below the occlusion of both rotors 3, and has a convex cross section that projects upward.

Reference numeral 13 denotes a pair of front and rear scrapers, which are detachably attached to the front and rear surfaces of the upwardly protruding portion of the center portion of the attaching portion 12 in the front-rear direction using attachment bolts 14 so as to be adjustable in vertical movement. Reference numeral 15 denotes an adjustment bolt equipped with a lock nut 16, which is interposed between the lower end surface of the scraper 13 and the front and rear of the mounting portion 12. By loosening the mounting bolt 14 and lock nut 16 and rotating the adjustment bolt 15, , the scraper 13 can be accurately moved and adjusted in the vertical direction. Adjustment bolts 15 and lock nuts 16 are shown as adjustment tools. Both scrapers 13 are in contact with each other in the front-rear direction above the mounting portion 12, and
It has a comb shape that projects upward, and the upwardly projecting part serves as a scraper part 17 that acts as a scraper on the groove part 10 of the rotor 3 near the occlusal part of both rotors 3, and is inserted into the groove part 10. scraper 13 on the occlusal side of both rotors 3.
The rotor 3 is said to have an occlusal shape. The tip of the scraper portion 17 is opposed to the bottom surface of the groove portion 10 with a small gap therebetween.

The opposing surfaces of the scraper parts 17 of both scrapers 13 are curved close to the tip locus 18 of the retractable claw 11 on the rotor 3 on the opposite side to the corresponding rotor 3 (i.e., the rotor on the side that does not perform the scraper action). The first guide surface 19 is concave. Further, the bottom surface of the groove between the adjacent scraper portions 17 of each scraper 13 has a second inclined surface adjacent to the tip locus 18 of the corresponding rotor 3.
This is a guide surface 20.

21 is a pair of front and rear screens, each rotor 3
It is arranged from the lower side to the front side or the rear side, and has a curved concave shape that closely follows the tip trajectory 18 of each rotor 3, and has a mounting bolt on the front wall side or rear wall side of the housing 1 and the mounting part 12. 22, 23
Each scraper 13 is removably attached to the
are fastened together with the end face flange of the screen 21 by means of mounting bolts 23. screen 21
The end flange cooperates with the upwardly protruding portion of the mounting portion 12 to clamp each scraper 13 over the entire length in the width direction, and also covers the exposed portions of the adjustment bolt 15 and the lock nut 16 in the front and back direction. There is. On the lower side of each groove 10 in each screen 21, circular particle size control holes 24 are arranged in a row along the groove 10, respectively.

According to the embodiment configured as described above, when pulverized materials such as runners and defective molded products are introduced into the housing 1 from the upper opening, the pulverized materials are transferred to both rotors 3 by the retracting claws 11 of each rotary blade 7. The rotary blades 7 of each rotor 3 and the side surfaces of the corresponding rotary blades 7 of the other rotor 3 crush each other, and between the retracting pawl 11 and the outer peripheral surface of the collar 8 which is the bottom surface of the groove 10. But it is crushed and becomes pulverized matter.

The pulverized material is subjected to the action of the retracting claw 11,
It is sent further downward and faces the screen 21, but the screen 21 has particle size control holes 24 lined up along the groove 10, not below the rotary blade 7 but below the groove 10. Only the pulverized materials that escaped from the rotary blade 7 to the side face the particle size control holes 24, and only the pulverized materials smaller than the particle size control holes 24 fall freely from the particle size control holes 24. The pulverized material larger than the control hole 24 is forced into the particle size control hole 24 and rotates together with the rotary blade 7 without causing clogging, and is again subjected to the pulverizing action by both rotors 3. The same action as above is repeated, and a good grinding operation is performed.

Then, the scraper portion 17 of each scraper 13
However, the grooves 10 of the corresponding rotors 3, especially on the bottom side, act as scrapers to peel off crushed materials adhering to the insides of the grooves 10. Since the scraper action is performed near the occlusal part of the rotor 3, the groove part 10 of each rotor 3
The peeled matter peeled off from inside is in this groove 10.
Retractable claw 1 of the other side rotor 3 that has entered inside
1, it is drawn into the lower side of the rotor 3 and does not accumulate in the vicinity of the scraper portion 17, allowing good grinding work to be performed.

In particular, in the embodiment, the opposing surfaces of the scraper portions 17 of both scrapers 13 are connected to the corresponding rotor 3.
The first guide surface 19 is a curved concave shape that is close to the tip locus 18 of the retractable claw 11 on the rotor 3 on the opposite side, and the bottom surfaces of the grooves between adjacent scraper parts 17 of each scraper 13 are respectively corresponding to each other. Since the second guide surface 20 is inclined to be close to the tip locus 18 of the rotor 3 , the peeled matter removed by the scraper section 17 of each scraper 13 is transferred to the first guide surface of the scraper section 17 . 19 and the corresponding second guide surface 20 of the other side scraper 13, the rotary blade 7 is retracted suitably and reliably by the retracting claw 11, and the peeled matter is not accumulated near the scraper part 17. There is no fear that it will happen.

9 to 12 show a second embodiment in which the present invention is applied to a slitter-type crusher for crushing municipal garbage and various wastes. , the particle size control holes 24 are elongated in the rotational direction of the rotor 3,
A pair of grooves are formed along the groove 10.
Further, the first guide surface 19 is planar.

(Effects of the invention) According to the invention, a mounting part with a convex cross section that projects upward is installed on the lower side of the occlusion of both rotors by connecting the center part of the lower end of both side walls of the rotor housing in the longitudinal direction. Therefore, the rigidity of the rotor housing can be increased by the mounting portion, and since the mounting portion has a convex cross section that projects upward, mounting surfaces for the pair of scrapers can be formed on the front and rear surfaces. The number of parts is reduced and the structure is simple.

Furthermore, since the pair of scrapers are individually attached to the front and rear surfaces of the upper protrusion of the mounting part so that they can move freely in the vertical direction, even if an individual scraper is damaged or worn out, each scraper can be replaced. , polishing repair, etc. can be performed, and repair work is also easy because each scraper is processed individually.

In addition, the front and rear scrapers are bolted together with the end flanges of the front and rear screens to the front and rear surfaces of the mounting section, allowing them to be attached and fixed at will. The number of parts can be reduced by sharing the same surface, and since each screen is held between the end flanges of the screen and the upwardly protruding part of the mounting part over almost the entire length in the width direction, it is possible to reduce the number of parts by using the end flanges. , the scraper can be firmly attached to the mounting part over almost the entire length in the width direction, and therefore,
Since the force acting on the scraper can be reliably received, reliable scraping can be performed while improving durability.

Furthermore, since the exposed portion of the adjuster that is exposed in the front-rear direction is covered by the end flange, it is possible to prevent crushed materials from adhering to the adjuster without providing a separate cover. The function of the adjuster will not be impaired.

[Brief explanation of the drawing]

1 to 8 show a first embodiment of the present invention, in which FIG. 1 is a plan sectional view, FIG. 2 is a back sectional view,
Fig. 3 is a sectional view taken along the line A-A in Fig. 1, Fig. 4 is a rear view of the scraper, Fig. 5 is a plan view thereof, and Fig. 6 is a sectional view taken along the line B-B in Fig. 4. , FIG. 7 is a view of the screen in FIG. 3 taken along arrow C, FIG. 8 is a sectional view taken along line D-D in FIG. 7, and FIGS. 9 to 12 show a second embodiment of the present invention. , Figure 9 is a front sectional view,
Fig. 10 A sectional view taken along the line E-E in Fig. 9, Fig. 11
The figure is a sectional view of the screen taken along the line F in FIG. 10, FIG.
The figure is a longitudinal sectional view showing one conventional example. DESCRIPTION OF SYMBOLS 1... Housing, 3... Rotor, 6... Rotating main shaft, 7... Rotating blade, 10... Groove, 13...
Scraper, 17...Scraper section.

Claims (1)

[Claim for Utility Model Registration] A pair of rotors each having rotary blades arranged in a row in the axial direction are arranged in parallel in front and back, and the rotary blade of each rotor is inserted into the groove between the side surfaces of the adjacent rotary blades of the other rotor. By locating the rotors in an interlocking manner, a pair of scrapers are provided in the vicinity of the interlocking part and on the material discharge side, which act as scrapers on the grooves of each rotor. In a device equipped with a particle size control screen on the side, a mounting portion with a convex cross section projecting upward is connected to the front-rear center of the lower end of both side walls of the rotor housing on the lower side of the occlusion of both rotors. Each scraper is installed on each of the front and rear surfaces of the upper protruding part of the mounting part, and each scraper is individually adjustable in the vertical direction, and is tightened together with the end flange of the screen using bolts in the front and back direction, and attached to each end flange. Each scraper is held by the upper protruding part of the mounting part over substantially the entire length in the width direction, and between each of the front and rear protruding parts of the mounting part and each scraper, an adjustment tool is provided for individually adjusting the movement of each scraper in the vertical direction. A slit type crusher, characterized in that an exposed portion of the adjuster that is exposed in the front-rear direction is covered with an end flange.