+Robot
+Box filling system
+Conveyor
Granulator
+Dryer, Loader & Temp. Controller
+Other equipment
+EOAT
Spacial Contents
 

This is not a crusher, but a granulator. Our GranCutter granulator provides you with top-quality recycled materials, and it have a good reputation among the users. The 21st century is a generation of recycling. Please try and see the effect of GranCutter swing and press cutting system.


Comparison with current granulators
Much less dust
The blade does not cut through material twice. This minimizes the amount of dust, static electricity and heat.
Very few miss-cuts
The spacing between the blades approximately duplicates the size of the original material pellets, so sprues and runners get granulated to roughly the same dimension. There are very few miss cuts.
Very quiet
Cutting is held to a minimum, thus the machine is very quiet.
Very easy to clean
Because there is minimal static electricity produced, and dust created doesn't adhere to interior surfaces. Moreover, two large panel doors open downward to afford greater cleaning convenience, and, ultimately, significantly shorten cleaning time and downtime. (Average cleaning time: 5-7 minutes)
Soft materials acceptable
With the SPC-S Series Grancutter, previously incompatible soft materials can now be granulated.

 
Conventional Granulators
Conventional rotary cutter granulators. when cutting sprues and runners that are larger than the cutter height, leave pieces in a comb-like form.(See fig.1). The remaining pieces, held in the cutters, inhibit the cutting of subsequent sprues and runners and runners, and, while trapped, get repeatedly shaved into dust. In the case of thin sprues and runners, cut pieces remain in a ring-like form on the stationary cutters. (See fig. 2).
Those pieces cannot be processed until the next sprues and runners are added. While caught, they are also rubbed to dust.
 
The Grancutter

he Grancutter utilizes a cam-driven swinging shaft rather than a rotating blade. The patented system cuts the sprues and runners between teeth on the swinging Shaft and teeth on a stationary blade mounted on the interior frame of the Grancutter. (See fig. 3).
When the swinging press cutter converges on the stationary cutter, the sprues and runners are cut in the "bite" of the teeth, and the granules are ejected from between the teeth of the cutters. The press cutter swings open again, and the next sprues and runners fall between the teeth to be cut. (See sequence of photos). There are no trapped pieces of sprues and runners, thus no dust. There is also very little static electricity or heat produced

The Mechanics of the Grancutter

In the case of cylindrical sprues and runners(See fig.4), the first blade of the swinging press cutter cuts the bottom half, then the sprue or runner is cut lengthwise by the second blade. The top half of the sprue or runner, as shown in fig.5, remains above the blades. It fall between the teeth when the press cutter swings open for the next " bite", and is then cut into granules. The result is that the sprues and runners are thoroughly and reliably cut, not shaved into dust or left uncut.

With conventional granulators that are equipped with a screen, sprues and runners that are smaller than the mesh can drop into the material tank without being cut. Miscuts can occur. With the Grancutter system, however, because pieces of sprues and runners remain above the blades if they are uncut, they cannot fall into the material tank without being granulated. Furthermore, the sprues and runners are cut at a right angle to the swinging shaft and are discharged between the teeth, Therefore, there is nearly no erroneous cutting.
 

Some examples of suitable materials.
 SPC SERIES (For NORMAL and HARD materials)
Poly
(methyl methacrylate)
PolyesterNylon
(20% glass filler)
Acrylonitrile Butadiene Styrene

 

The Design of the Grancutter
Sprues and runners drop into the upper section of the Grancutter, Where they are rough cut between blades on a rotating shaft assembly and blades on a stationary plate. The rotating shaft assembly is directly connected to the axle of the mounted motor. Also affixed to the axle is a cam, from which the swinging press cut assembly shaft is driven by means of a torque arm and cam follower. After passing through the rotating cutter blades, the chopped sprues and runners fall between the press cutter assembly teeth, where they are granulated into pellets. Figure 6 shows the shape of the large side door panels that can be opened in the manner of photo1, exposing the interior of the Grancutter and making cleanup very quick and easy.
When purchasing this Grancutter, please confirm the intended use and capacity.
This Grancutter is to be provided one for each molding machine basis and designed for granule cutting of sprues and runners immediately after being taken out by the take–out robot. So it is important to operate to it within the capacity range.

 

With the SPC-S series Grancutter, it is now
 possioble to granulate soft-type resin sprues
 and runners that could not be recycled.
 SOFT TYPE GRANCUTTER SPC II-S Series]
  SPCII-400S
  SPCII-750S
The soft-type Resin Grancutter
End-users have repeatedly expressed a concern that they could not recycle various elastomers and soft-type resins that they use, and they wished there was a machine to granulate sprues and runners of those materials for re-use. Until now, there was basically no way to recycle elastomers and soft-type resins,and it was impossible to satisfactorily use the discarded sprues and runners. In response, Harmo-Soken has developed the SPC-S Series Grancutter, designed specifically to granulate those materials for recycling. The significant difference of the SPC-S Series machines relative to the SPC Series Grancutters is the clearance in the "bite" of the teeth. Whereas the space between the "biting" teeth on the normal-material machines is approximately 0.4mm, the gap on the SPC-S Series machines is under0.03mm. If the gap is any larger, PP sprues and runners are stretched, not cut, and soft elastomers are torn, not cleanly granulated. Due to this precision, the machine must not be used for granulating materials other than those soft-type materials specifically designated as compatible.
Some examples of suitsble materials.
 SPC-S SERIES (For SOFT materials)
Polypropylene
Pic
Polyethylene
Pic
Thermoplastic Elastomer
Pic
Polyurethne
Pic
 
The Soft-type Resin Grancutter should not be used for Normal and Hard Materials. The teeth are not designed to cut those materials, and damage to the machine occurs. Do not attempt to granulate Normal and Hard Materials in the S-Series Grancutter. Harmo-Soken is not responsible for any damage resulting from incompatible material(Normal and Hard materialsÛjbeing granulated.

 
Movie
Click image or title to see motion image.
QuickTime MovieGIF AnimationGIF Animation
A total image of each different blade moving in one continuous sequence, including overall movement of a rotary blade and close-up of a moving blade. Also you find the casing is wide open for easy cleaning.
Overall image of a rotary blade with bigger image size.
Close-up image of a moving blade actually cutting materials into small pieces with bigger image size.
QuickTime 3 or 4 required
Length:42sec.
Image size : 160 * 120
File size : 717KB
Length:Endless
Image size : 269* 215
File size : 345KB
Length:Endless
Image size : 250* 190
File size : 530KB

Get Quick Time

¸yÛ[¸WŠÍ¸g¸b¸vŠÄ