JPS6333665Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of the invention) This invention is used for sorting crushed synthetic resin pellets, for example, and is used for vibration sorting, in which the whole thing is vibrated by a vibration motor, etc., and the material to be sorted is sieved. Regarding machines.

(Prior art) Most conventional vibration sorting machines have sieve screens with different mesh sizes arranged in multiple stages above and below, and are not suitable for sieving granular or granular materials to be sorted. However, in the case of objects to be sorted, such as particles containing rod-shaped objects or foreign objects, there are problems such as clogging, which prevents reliable sorting.

(Purpose of the invention) This invention is capable of reliably sifting each material according to its shape, even if there are various shapes mixed inside, such as when recycled resin raw materials are pulverized with a pulverizer. The purpose of the present invention is to provide a vibration sorter that can sort out and discharge foreign substances such as rod-shaped objects.

(Structure of the device) In this device, a sieve screen in which mesh portions of a predetermined width and non-mesh portions of a predetermined width are alternately provided in the flow direction is arranged in multiple upper and lower stages at regular intervals. The mesh part of the sieve screen corresponds to the non-mesh part of the lower sieve screen, and the bottom tier is provided with a sieve screen with a full mesh, while the punched mesh is set successively smaller from the upper tier to the lower tier. It is characterized by being a sorting machine.

(Effects of the invention) According to this invention, since the mesh portions of the upper and lower sieve nets correspond to the non-mesh portions, even if non-granular objects, such as rod-shaped objects, are mixed in, They are first discharged along the flow direction without passing through the mesh of the uppermost sieve screen.

Furthermore, even if the rod-shaped material to be sorted passes through the mesh of the top sieve screen and falls onto the second sieve screen, it will pass through the second sieve screen because there is no mesh in the falling part. Unable to do so, they flow down the drain and are sorted out.

Similarly, even if there is an object to be sorted that is larger than the specified size or a short bar-shaped object that passes through the top screen, it will not pass through the second screen with a smaller mesh, and therefore it will not pass through. Items other than those to be sorted that are smaller than the specified size are sieved by the upper and next sieve screens and taken out.

The objects to be sorted that have passed through each of the upper and next sieve screens and have a size smaller than the specified size fall entirely onto the sieve screen at the bottom of the screen, where they are separated from the powdered objects.

In this way, with the vibration sorter of the present invention, even if irregularly shaped rod-shaped objects such as nails are mixed in with the object to be sorted, they can be reliably discharged and taken out. I never wake up.

Furthermore, unlike a normal mesh screen in which wire rods are combined vertically and horizontally, a sieve screen formed by punching is used, so that the above-mentioned clogging can be even better prevented.

(Example) An example of the present invention will be described below based on the drawings.

The drawing shows a vibration sorter, and in FIG.
The chute body is formed into a shallow box shape, and one end is provided with a socket 2 for receiving crushed resin pellets as the material to be sorted supplied from a crusher (not shown), and the center A powder resin outlet 4 is formed in the part.

Inside the chute body 1, there are
As shown in the figure, three sieve nets 5, 6, and 7 are arranged vertically at appropriate intervals, and mis-pellet discharge ports 8a, 8b and regular pellet outlet 9 are provided at the downstream ends, respectively. There is.

The uppermost sieve net 5 and the middle sieve net 6 are both formed by punching, and have a mesh portion 5 of a predetermined width in the pellet flow direction.
a, 6a and non-mesh portions 5b, 6b of a predetermined width are arranged alternately, and the lowermost sieve screen 7 has a mesh formed by punching on the entire surface, and the size of the mesh is the same as that of the upper sieve screen. The mesh is the largest, the middle mesh is smaller, and the bottom mesh is the smallest.

And the top tier sieve net 5 and the middle tier sieve net 6
In relation to this, the mesh portions 5a, 5a... of the upper sieve net 5 correspond to the unmeshed portions 6b of the middle sieve net 6, and the unmesh portions 5b, 5b... of the upper sieve net 5 correspond to the unmesh portions 6b of the middle sieve net 6. They are arranged so as to correspond to the mesh portions 6a, 6a, . . . of the sieve net 6.

In addition, numeral 10 in the figure is a vibration motor, which connects the flow plate 3.
It is attached to the lower part of the chute and vibrates the chute body 1.

The illustrated embodiment is configured as described above,
The action will be explained below.

Not all of the resin pellets crushed by the crusher are in the form of granules, and rod-shaped resins that are not cut sufficiently and pellets that are larger than the specified size are mixed together.

When such a material to be sorted 11 is fed from the hopper 2, the rod-shaped material to be sorted 1 is
The pellets 1a cannot pass through the mesh, and most of the pellets are discharged from the pellet outlet 8a and collected.

However, since the mesh is relatively large, some of the rod-shaped objects 11a pass through the mesh and fall onto the middle sieve screen 6 together with other objects. , is a non-mesh portion 6b of a predetermined width necessary for changing the direction of the rod-like object, and lies on the sieve screen 6 for this purpose, and the mesh of the middle sieve screen 6 is smaller than the mesh of the upper layer. The rod-shaped objects 11a and the parts 11b to be sorted having a size larger than the specified size flow down on the middle sieve screen 6 without clogging the mesh, and are collected as miss pellets from the discharge port 8b at the end along with the discharge port 8a.

The material to be sorted that has passed through the middle sieve net 6 falls onto the bottom sieve net 7;
As mentioned above, the entire surface is a mesh formed by punching, and here, the powdered material to be sorted is sieved, the normal size material to be sorted 11c is taken out from the pellet outlet 9 at the end, and the powdered material is removed. The sorted material is taken out from the powder resin outlet 4 and sorted.

In this way, even if the objects to be sorted contain rod-like objects or irregularly shaped objects, they can be sorted smoothly and reliably without clogging the mesh.

Note that the material to be sorted is not limited to pulverized resin, but can also be used for, for example, grains and other materials, and is most suitable as a sorter when foreign matter such as nails is mixed in the material to be sorted.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which Fig. 1 is a perspective view of a vibration sorter, Fig. 2 is an exploded perspective view of each sieve screen, and Fig. 3 is a sectional view taken along the line A-A in Fig. 1. It is. 5... Upper sieve screen, 5a, 6a... Mesh portion, 5b, 6b... Part without mesh, 6... Middle sieve screen, 7... Lower sieve screen.

Claims (1)

[Claims for Utility Model Registration] A sieve net in which mesh portions of a predetermined width and non-mesh portions of a predetermined width are alternately provided in the flow direction are arranged in upper and lower stages at regular intervals, and the upper sieve Vibration sorting in which the mesh part of the screen corresponds to the unmeshed part of the lower sieve screen, and the bottom tier is a sieve screen with a full-face mesh, while the punched mesh is set successively smaller from the upper tier to the lower tier. Machine.