JPH0323309Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention can be applied to leather pieces, crushed pieces of leather, cut scraps,
This invention relates to a leather grinder that can turn cutting waste into fine powder of 250 mesh or more.

[Prior Art] Previously, hides prior to tanning were loosened into fibers, but there was no need to grind hides or hides into powder, so there were no leather grinders.

[Problems to be solved by the invention] Therefore, when leather is used in the form of fine powder, there is no suitable grinder, so it is necessary to cut the leather into small pieces and grind them with a millstone. At present, methods such as sanding the leather into powder, or sanding the leather and turning it into powder are inefficient, and it is not possible to obtain leather powder in good condition.

[Means for Solving the Problems] This invention is a leather crusher A provided in view of the above situation, in which a wheel-shaped rotor 3 is fitted onto a rotating shaft 2 at intervals. A plurality of rotary blades 4 parallel to the rotary shaft 2 are provided on the outer circumferential surface of 3.
A cutter 1 to which the cutter 1 is fixed is rotatably supported in a casing 5, and the casing 5, which is at least above the axis of the rotating shaft 2, is used as a screen 6, and the cutter 1 has a The fixed blade 7 corresponding to the rotary blade 4 is connected to the screen 6.
A plurality of blades are disposed in the casing 5 including the rotary blade 4, and the rotary blade 4 has an inclined surface protruding from the front side of the rotation toward the rear side of the rotation, and the fixed blade 7 is attached to the rotary blade 4. The leather powder has a sloped surface on the side where it approaches, making it easy to obtain fine grained leather powder.

[Function] With the above configuration, if a piece of leather or the like is input from above the cutter 1, the rotary blade 4 has an inclined surface protruding from the front side of rotation toward the rear side of rotation, while the fixed blade 7 has a sloped surface on the side where the rotary blade 4 approaches, so that the leather piece is smoothly fed between the sloped surface of the rotary blade 4 and the sloped surface of the fixed blade 7 by the rotation of the rotary blade 4. . Next, the leather piece is cut by the edge portion of the rotary blade 4 of the rotating cutter 1 and the corresponding fixed blade 7 provided along the outer circumferential surface of the cutter 1, and is struck. While being finely divided, the fixed blade 7 and the rotary blade 4 come into sliding contact with each other to crush and further reduce the particles into fine particles, which passes through the screen 6 of the casing 5 and is coarser than the mesh of the screen 6. is subjected to the above-mentioned pulverization action repeatedly until the size becomes smaller than the mesh of the screen 6.

[Embodiment] An embodiment of this invention will be described below with reference to the drawings. A shows a leather crusher, 1 is a cutter, and the cutter 1 has wheel-shaped rotors 3 fitted on a rotating shaft 2 at predetermined intervals, and the rotors 3, 3, . . . A plurality of rotating blades 4, 4, . . . parallel to the rotating shaft 2 are fixed to the outer peripheral surface at equal intervals. This rotary blade 4, 4
... has an inclined surface protruding from the rotational front side of the rotors 3, 3... toward the rotational rear side. Reference numeral 8 denotes a collar provided near the circumferential surface between the rotors 3, 3, . The cutter 1 thus constructed is pivotally supported within the casing 5 by a bracket 9 and is driven by a belt in the direction of the arrow.

The casing 5 is provided with a plurality of fixed blades 7 with blades protruding from the inner circumferential surface and corresponding to the rotary blade 4 at appropriate intervals, and the fixed blades 7 are arranged at appropriate intervals when the rotary blade 4 approaches. It is said to have a sloped surface on the side. Further, the casing 5 has an opening at the top of the cutter 1, and a part of the opening is used as a screen 6. (This embodiment shows the case where the entire surface is a screen.) The fixed blade 7 is provided in a lower part of the casing 5 in a state protruding from the screen 6.

Furthermore, the upper opening of the casing 5 communicates with the input port 10, and the screen 6 is located above the output port 11.

When pieces of leather, scraps, etc. are input through the input port 10, they are finely divided by the cutter 1 and turned into leather powder, which is collected from the output port 11. For example, by mixing thermoplastic resin and leather powder, leather-like In order to make sheets, films, and other molded products, leather powder in the form of fine grains of 50 to 250 mesh is required. Ideally, 60% of the powder passes through a sieve of 150 mesh, and the amount that passes through a sieve of 100 to 150 mesh is ideal. 20%, 60 to 100 meshes with 12% passing through the sieve, but the leather waste that has been crushed, cut, cut, etc. is dried until the residual moisture is 3% or less, and this pulverizer is used to pass through the screen 6. The above desired result can be easily obtained by replacing the .

[Effects] As described above, in the leather crusher A according to this invention, the wheel-shaped rotor 3 is fitted onto the rotating shaft 2 at intervals, and the rotating shaft 2 is attached to the outer peripheral surface of the rotor 3.
A cutter 1 having a plurality of rotary blades 4 fixedly fixed thereto is rotatably supported in a casing 5, and a fixed blade 7 corresponding to the rotary blades 4 is attached to the casing along the outer peripheral surface of the cutter 1. 5, and the rotary blade 4 has an inclined surface protruding from the front side of rotation toward the rear side of rotation, and the fixed blade 7 has a slope on the side toward which the rotary blade 4 approaches. Since it has an inclined surface, the leather pieces etc. can be smoothly fed between the rotary blade 4 and the fixed blade 7 by the rotation of the rotary blade 4, and the leather pieces etc. can be efficiently pulverized. I can do it. Further, at least the casing 5 below the axis of the rotating shaft 2
is used as the screen 6, so that leather pieces and various leather waste are separated from the rotary blade 4 and fixed blade 7 within the casing 5.
The fine powder is crushed by the blade, cut into small pieces by cutting at the edge portion, and ground into fine powder by the sliding contact between the rotary blade 4 and the fixed blade 7. The fine powder is passed through the screen 6. Powders that have passed through the meshes and are not sufficiently finely divided continue to remain in the casing 5 and are subjected to the finely divided action of the blades, so that powders with large mesh numbers can be easily obtained. In addition, a plurality of the fixed blades 7 are also provided in the casing 5 where the screen 6 is provided, so that leather pieces etc. can be pulverized on the lower side of the casing 5. Even if the leather pieces to be pulverized tend to accumulate in the lower part of the casing 5 because of the small amount, the pulverization treatment of the leather pieces etc. can be sufficiently performed.

Incidentally, the input leather pieces, leather scraps, etc. can be further easily powdered by drying them to an absolutely dry state.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of an embodiment of a leather crusher according to the invention, and FIG. 2 is a side view of the same. A... Leather crusher, 1... Cutter, 2... Rotating shaft, 3... Rotor, 4... Rotating blade, 5... Casing, 6... Screen, 7... Fixed blade, 8...
...Color, 9...Bracket, 10...Inlet,
11... Outlet.

Claims (1)

[Scope of utility model registration request] A wheel-shaped rotor is fitted at intervals around a rotating shaft, and a cutter having a plurality of rotary blades parallel to the rotating shaft fixed to the outer circumferential surface of the rotor is pivotally supported in the casing, and at least The casing below the axis of the rotating shaft serves as a screen, and a plurality of fixed blades corresponding to the rotating blades are disposed along the outer peripheral surface of the cutter in the casing including the screen,
The leather crusher is characterized in that the rotary blade has an inclined surface protruding from the front side of the rotation toward the rear side of the rotation, and the fixed blade has an inclined surface on the side toward which the rotary blade approaches. .