JPS6024874A - Pinball polishing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polishing device for cleaning pachinko balls soiled by game machines.

Conventionally, granular abrasives are mixed with dirty pachinko balls at the bottom of the machine, and a coil spring driven by a motor stirs and mixes the pachinko balls and the abrasives while transporting them to the top of a cylindrical body. A pachinko ball polishing device that separates pachinko balls from a polisher, collects the abrasive material downward, mixes it with the pachinko balls again, and circulates it is shown in Japanese Patent Publication No. 8308/1983. However, in this case, only a coil spring is used to transport the mixture of pachinko balls and abrasive material upward, so a cylindrical body with a coil spring inside is curved into a large arc at the bottom of the device. As a result, the device becomes large and requires a large space, and has the disadvantage that repeated bending stress is applied to the coil spring.

In order to solve this problem, a screw conveyor is attached to the lower part of an upright cylindrical body, and a coil spring is attached to the two parts, as shown in Japanese Patent Application Laid-Open No. 57-180980. However, in this case, the mechanism is not only complicated but also expensive.

The present invention aims to eliminate the above-mentioned drawbacks of the conventional device, and includes a coil spring in which a band member is spirally formed in the center of a cylindrical body provided upright, and the lower end of the coil spring is The present invention is characterized in that it is configured to be screwed into a shaft having protrusions having the same pitch as the coil spring.

Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In Fig. 1 (showing the inlet of the polishing device), numeral 1 is a cylindrical body provided upright, and a coil spring is attached to the center of the cylindrical body. 2 is provided. This coil spring 2 is formed by spirally forming a band-shaped member having the cross section shown in FIG. The lower end of this coil spring 2 is screwed into a shaft 3, and the structure of the shaft 3 is as shown in FIGS. 4 and 5. Protrusions 3a and 3b are welded to the circumferential side of the shaft 3, and the structure of these protrusions is such that the coil spring is
It is cut out in degrees and welded to the cylindrical side surface at two opposing positions, upper and lower, and the pitch is set to be the same as the pitch of the coil spring 2. In this case, there is no particular limitation on how to install the protrusion, as long as it can be fixed by screwing in the coil spring 2.

Pachinko balls sent from each pachinko machine (not shown) are indicated by the symbol B in FIG. It is fed toward the lower end of the coil spring 2 through the opening 1' provided at the lower part.

When the polishing device of the present invention is installed and used in the center of a group of pachinko machines, it is necessary to collect the pachinko balls from each pachinko machine in two directions, right and left, and to flow them toward the polishing device. In order to keep the height low, the polishing device is configured so that the pachinko balls flow in from the lateral direction, but simply allowing the pachinko balls to flow in from both the left and right directions creates a difference in the amount of inflow between the left and right sides. That is, in FIG. 2, the amount of inflow from the left direction increases, while the amount of inflow from the cloth direction decreases.

In order to solve this problem, in the present invention, an upper swash plate 6 is mounted above the lower swash plate 5, and a notch 6 is provided in the center of the swash plate 6.
By providing ′, it is possible to equalize the amount of pachinko balls flowing in from both the left and right sides.

Reference numeral 7 denotes an adjustment plate that adjusts the amount of inflow of the abrasive material P.

A motor (not shown) as a drive source is provided above the cylindrical body 1, and the method for attaching the coil spring 2 to the drive shaft of the motor is the same as that for attaching it to the shaft 3.

Since the coil spring of the present invention has the above structure, the coil spring can be set by pushing the coil spring clockwise from above, and can be disassembled by pulling it counterclockwise. In addition, since it rotates clockwise during operation, there is no need to disassemble it during operation.

Since the inlet part of the polishing apparatus of the present invention is configured as described above, when the motor rotates, the coil spring 2 is moved to the shaft 3.
At the same time, the mixture of the pachinko balls B and the abrasive material P is sent upward while being stirred and mixed, and during this time, the pachinko balls B are rubbed by the abrasive material P and the dirt is adsorbed by the abrasive material P.

As explained above, since the cylindrical shaft 3 is inserted in contact with the inner diameter of the coil spring at the inlet portion, the same lifting capacity as a screw conveyor can be achieved in this portion. In addition, the cross-sectional shape of conventional coil springs is round, but in the present invention, a coil spring with a strip member formed in a spiral shape is used, which greatly increases the lifting capacity of the polishing device. .

The mixture of pachinko balls B and abrasive material P that has been transferred upward as described above is sent from the first screen 8 and second screen 9 which are provided with a head difference as shown in FIGS. 6 and 7. It is sent towards the separated evil that is composed. Both of the separation screens 8 and 9 are composed of L-shaped rod-shaped bodies 10,
The spacing between the rod-like bodies 10 is set to be slightly smaller than the diameter of the pachinko balls B.

Although the abrasive material P is separated from the pachinko balls B in the first cage 8, there is a small amount of abrasive material that is sandwiched between the pachinko balls and carried to the second cage. In order to separate the balls, the first screen 8 and the second screen 9 are shifted in the middle direction, thereby changing the flow of the pachinko balls and separating them.

Further, as mentioned above, since the first screen 8 and the second screen 9 are provided with a head difference, dust and the like adhering to the pachinko balls are also removed.

Pachinko balls B roll on the screen, fall from the first screen 8 to the second screen 9, and change the flow path to make the abrasive P.
The abrasive material P is collected by the ho-7 bar 11, returned to the box 4 at the entrance shown in FIG. 1, and circulated within the apparatus.

The pachinko balls B from which the abrasive has been separated are collected and moved toward each pachinko machine.

In addition, in the embodiments shown in FIGS. 6 and 7, two separate screens are used.
Although the case is shown in which they are provided in stages, it goes without saying that any number of stages may be used.

Since the present invention is configured as described above, the structure is relatively simple and the installation requires less space. In particular, not only is the lifting force greatly increased by using a coil spring formed into a helical band member, but also the structure in which the coil spring is screwed into a cylindrical shaft at the lower end allows the screw conveyor to be attached to the lower end of the device. It has the effect of being able to obtain a large lifting force equivalent to that of .

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the inlet, Fig. 2 is a top view thereof, Fig. 3 is an axial sectional view of the coil spring, Fig. 4 is a top view of the shaft, Fig. 5 is a perspective view thereof, and Fig. 6 is a sectional view of the inlet section. Top view of the separator screen,
FIG. 7 is a side view of the separation screen. 1...Cylindrical body 2...Coil spring 3...Shaft 3a, 3b...Protrusion agent Patent attorney Yuyosuke - 2 people Fig. 3 Fig. 4 Fig. 5

Claims (3)

[Claims] (1) A band-shaped member is placed in the center of the cylindrical body that is provided upright. A pachinko ball polishing device, characterized in that a coil spring formed in a spiral shape is provided, and the lower end of the coil spring is screwed into a shaft having a protrusion of the same length as the pin and nozzle of the coil spring. . (2) A lower swash plate and an upper swash plate having a notch in the center are further provided at the lower end of the cylindrical body so that pachinko balls can flow in from both left and right directions. pachinko ball polishing equipment. (3) The pachinko ball polishing device according to claim 1, wherein the first and second cages are arranged above the cylindrical body with a head difference and are shifted in 11 directions.