JPH0450073Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention removes dirt from pachinko balls adhering to the surface of synthetic resin granules (hereinafter sometimes abbreviated as granules or pellets). The present invention relates to a synthetic resin granule cleaning device for polishing pachinko balls which then forcibly removes fine particles remaining on the granules by suction.

<Conventional technology> Conventionally, stains on pachinko balls at pachinko parlors have been removed by stirring and cleaning them using water and detergent, but this method has had problems such as the high cost of disposing of the dirty water in a non-polluting manner. Recently, pachinko ball pellets with dirt on them are mixed and stirred, and the synergistic effect of the friction between the pellets and the pachinko balls and the resulting heat generation causes the dirt on the surface of the pachinko balls to be adsorbed to the pellets, thereby cleaning the balls. Along with this, a synthetic resin granule cleaning device for removing dirt from pellets has been developed.

The main structure and operation of a conventional synthetic resin granule cleaning device will be explained based on Fig. 3.
The contaminated pellets falling from the screen 3 are forced into the screen 8 by the screw device 12, and the pellets agitated within the screen 8 are pressed into contact with a number of slits 16 bored in the outer peripheral wall of the screen 8 and slid. slit 1 on the bottom side of screen 8.
Although the pellets are easily discharged from the pellets 6, they are not discharged from the slits 16 on the upper and side surfaces, and are pushed out from the discharge port 7 while adhering to or mixed with the pellets.

<Problem to be solved by the invention> However, since the conventional synthetic resin granule cleaning device described above does not have a suction device for fine dust,
There are drawbacks such as fine particles and residual dust strongly attracted by static electricity that wear out the pellets and shorten the replacement cycle, making it uneconomical. In addition, the pachinko ball polishing equipment is installed inside the pachinko machine row, so
When the cleaning device installed parallel to the polishing device is operated, dust is scattered inside the pachinko machine row, staining the back of the pachinko machine and the coin conveying device installed inside the pachinko machine row, causing extreme damage. In some cases, dust can also cause mechanical problems.

Therefore, there has been a need for a cleaning device that can safely remove dirt without damaging the pellets, provide pellets that can be used semi-permanently, and that does not cause mechanical troubles.

<Means for Solving the Problems> The present invention was devised in view of the above-mentioned problems, and includes a screw device and a screw device installed below the hopper into which the synthetic resin granules with dirt attached after polishing the pachinko balls are fed. A screen is provided with a stirring shaft that is coaxial with the screw device and rotates at the same time, and has a plurality of parallel dirt discharge slits and extrusion ports on the outer peripheral wall surrounding the stirring shaft. A sliding gutter having a net at the bottom extends to the extrusion port of the screen, a fine debris receiving layer is provided below the mesh of the sliding gutter, a suction pipe is connected to the suction pipe, and the tip of the suction pipe is suctioned. By connecting to the device,
The synthetic resin granules with dirt attached to them from the pachinko balls supplied from the hopper are guided from the screw device to the screen, and a layer of dirt adheres to the surface of the granules due to the contact pressure and frictional force between the granules and the dirt discharge slit. The remaining fine particles extruded from the extrusion port together with the synthetic resin granules are passed through a net by the suction action of a suction device, and collected from the fine dust receiving layer into the suction device via a suction pipe. The present invention provides a synthetic resin granule cleaning device for polishing pachinko balls, which is characterized by the following characteristics.

<Function> In this invention, the synthetic resin granules with dirt attached to them from the pachinko balls fed into the hopper are guided from the screw device to the screen, where the contact pressure and friction between the granules and the dirt discharge slit are introduced. As a result, the dirt layer adhering to the surface of the granules is peeled off into flakes, and the remaining fine particles extruded from the extrusion port together with the synthetic resin particles are passed through the net by the suction action of the suction device and are transferred from the fine particle receiving layer to the suction pipe. The dust is then collected by a suction device.

Therefore, the surface of the synthetic resin granules discharged from the cleaning device is not contaminated at all, so the granules do not wear out or reduce the cleaning function of pachinko balls, and the synthetic resin can be used semi-permanently. In addition, it is possible to eliminate problems caused by dust scattering or scattering inside the pachinko machine row.

<Example> The synthetic resin granules referred to in the present invention are granular intermediate products manufactured using petroleum as a raw material, and are plastic pellets used as raw materials for molding plastic products. The grain size is approx.
A 2.3Φ×2.6mm cylindrical nylon plastic pellet was used.

This pellet is a flexible thermoplastic resin.
Easily charged with static electricity due to friction, etc., and has a particularly strong ability to attract dirt, etc.

Utilizing the above-mentioned adsorption power of the pellets, the pellets are mixed with pachinko balls, medals, etc. and stirred, and the dirt is adsorbed onto the pellets, thereby polishing and cleaning the pachinko balls and medals.

When removing dirt from these pellets, the main purpose of the synthetic resin granule cleaning device is to peel off the thin flakes of the dirt layer without excessively scraping the pellet surface, so that the pellet retains its original shape and can withstand long-term use. However, it was difficult to remove even the minute dust that was attracted by static electricity, and it was not easy to commercialize it.

This invention forcibly removes the dirt removed by the synthetic resin granule cleaning device, including fine particles that are pushed out without being discharged from the slit, especially pellet dirt that is pushed out while adhering to the surface due to static electricity. This is a dust collector in a synthetic resin granule cleaning device equipped with a suction device.

Hereinafter, one embodiment of the cleaning device of the present invention will be described in detail based on the drawings.

Fig. 1 is a partially cutaway perspective view of the dust collector of the present invention;
FIG. 2 is a side view showing the internal structure of a synthetic resin granule cleaning device equipped with the dust collector of the present invention, and FIG. 3 is a partially cutaway perspective view of a conventional synthetic resin granule cleaning device.

1 is a pellet sliding gutter, through which the pellets from which dirt has been removed in the synthetic resin granule cleaning device are extruded from the extrusion port, and the extruded pellets slide down from the extrusion port. It is fixed to the lower front end of the screen 8 in an inclined state.

2 is a mesh forming the bottom of the pellet sliding gutter 1, and it is necessary that the mesh is large enough to prevent the pellets pushed out from the screen 8 from falling;
The mesh in this embodiment is, for example, 14 meshes of 0.55 mmΦ.

Reference numeral 3 denotes a dust receiving layer for containing dirt passing through the net 2, and a dust suction port 4 is provided, and one end of a suction pipe 5 is attached to the dust suction port 4.
The other end of the suction pipe 5 is connected to a suction device 6, and all the fine particles attached to the pellets sliding down on the net 2 of the gutter 1 pass through the suction pipe 5 while passing through the gutter 1. It is sucked into the suction device 6.

Reference numeral 10 denotes a lid that is in contact with the extrusion port 7 of the screen 8. The lid 10 is supported by an arm rod 19, and is provided so as to be openable and closable with the support shaft 9 as a fulcrum.
By moving the position of a weight 11 attached to the pellets, the amount of pellets pushed out can be adjusted.

In the apparatus of the present invention constructed as described above, pellets with dirt attached fall into the hopper 13, enter the screw device 12 provided below from the hopper 13, and are driven into the motor 14 within the screw device 12. It is pushed out into the adjacent screen 8 by a screw rotating in conjunction with the shaft 15.

As the extruded pellets are stirred by the stirring shaft 17, the dirt layer adhering to the surface of the particles is peeled off into flakes due to the contact pressure and frictional force between the particles, and the screen 8 The particles are discharged from the slit 16 provided on the outer peripheral wall of the pellet, but some of the particles fall into the dirt layer receiving tank 18 below, and the particles pushed out from the extrusion port 7 along with the pellets are discharged onto the sliding gutter 1. and slides down the top surface of the net 2.

Fine debris receiving layer 3 provided at the bottom of the net 2 of the sliding gutter 1
is provided with a suction port 4, and the suction port 4 communicates with a suction device 6 via a suction pipe 5, so that fine debris etc. adhering to the pellets while passing through the sliding gutter 1 are removed. All the pellets are completely absorbed by the suction device 6, and the pellets fall onto the receiving layer 20.

In this example, the slit through which dirt is discharged has a width of 1.0 mm and a length of 12 mm, and the mesh size is 1.3 mm ^2.
It is.

<Effects of the invention> In summary, according to the invention, a screw device and a stirring shaft coaxial with the screw device and rotating at the same time are installed below the hopper into which the synthetic resin particles with dirt attached after polishing the pachinko balls are fed. A screen having a plurality of parallel dirt discharge slits along the swirling flow direction of the particles and an extrusion port is provided on the outer peripheral wall surrounding the stirring shaft, and the extrusion port of the screen has a A sliding gutter having a net is extended, a fine debris receiving layer is provided below the net of the sliding gutter, a suction pipe is connected to the suction pipe, and the tip of the suction pipe is connected to a suction device, whereby the dust is supplied from the hopper. Synthetic resin granules with dirt from pachinko balls are guided from the screw device to the screen, and the dirt layer adhering to the surface of the granules is peeled off into flakes by the contact pressure and friction between the granules and the dirt discharge slits. However, the remaining fine particles extruded from the extrusion port together with the synthetic resin granules are passed through the net by the suction action of the suction device and collected from the fine particle receiving layer into the suction device via the suction pipe, so that they are not discharged. There is no dirt on the surface of the synthetic resin granules, and the granules do not wear out or degrade the cleaning function of pachinko balls, so they can be effectively used for a long period of time.

In particular, in the present invention, since the dirt discharge slits formed in the screen are parallel to each other along the swirling flow direction of the particles, it is possible to clean the surfaces of the particles without damaging or chipping them. When the granules pass through the net, fine debris adhering to the surface due to the action of static electricity or the like is reliably removed, and the fine debris does not act as a metal and cause damage to the granules. In addition, with the present invention, dirt on the synthetic resin granules is completely removed without the need for water or cleaning agents, making it possible to obtain synthetic resin granules that can be used semi-permanently while maintaining their original shape. .

Furthermore, according to the present invention, the dust generated when the cleaning device is driven is forcibly sucked in by the suction device, so the dust will not be scattered or scattered inside the pachinko machine row, so there will be no mechanical damage caused by the dust. There are no problems, and there is no need to periodically remove debris that accumulates at the bottom of the debris receiving layer. It is highly effective in practical use as it can suck up dust floating in the gutter.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of the present invention, Figure 2 is a side view showing the internal mechanism of a synthetic resin granule cleaning device to which the present invention is attached, and Figure 3 is a conventional synthetic resin granule cleaning device. FIG. 1 is a sliding gutter, 2 is a net, 3 is an agitation dust receiving layer, 5 is a suction pipe, 6 is a suction device, 12 is a screw device, 16 is a slit, and 17 is an agitator.

Claims (1)

[Scope of utility model registration request] A screw device and a stirring shaft that is coaxial with the screw device and rotates at the same time are installed below the hopper into which the synthetic resin granules with dirt attached after polishing the pachinko balls are placed, and the outer peripheral wall surrounding the stirring shaft is installed. is provided with a screen having a plurality of parallel dirt discharge slits and an extrusion port along the swirling flow direction of the granules, and a sliding gutter having a net at the bottom extends from the extrusion port of the screen, and the sliding gutter has a mesh at the bottom. A fine debris receiving layer is provided below the net, and a suction pipe is connected to the suction pipe, and the tip of the suction pipe is connected to a suction device to remove soiled synthetic resin granules from pachinko balls supplied from the hopper. The particles are guided from the device to a screen, and the dirt layer adhering to the surface of the particles is peeled off into flakes by the mutual contact pressure and frictional force between the particles and the dirt discharge slit, and then extruded from the extrusion port together with the synthetic resin particles. A synthetic resin granule cleaning device for polishing pachinko balls, characterized in that residual fines are passed through a screen by the suction action of a suction device and collected from a fines receiving layer into a suction device via a suction pipe.