JPH0147193B2 - - Google Patents

Description

Detailed Description of the Invention This invention involves mixing pachinko balls with an abrasive, introducing this mixture into a lifting pipe, and lifting the pachinko balls by the rotation of a spiral body provided in the pipe. This invention relates to a lifting device for cleaning pachinko balls.

Examples of devices for cleaning pachinko balls while transporting them together with an abrasive material include the device described in Japanese Patent Publication No. 4546/1983, and Japanese Patent Application Laid-open No. 131468/1985, which was previously filed by the applicant of the present invention. However, in the conventional lifting device, only the pachinko balls tend to be easily introduced into the lifting pipe, and the abrasive material is difficult to be introduced, making it difficult to obtain an appropriate mixing ratio of the pachinko balls and the abrasive material. For this reason, in the past, even if the pachinko ball lifting capacity was sufficient, the cleaning capacity was insufficient, resulting in the drawback that pachinko balls that were not sufficiently cleaned were supplied to each pachinko machine as prize balls. As a pachinko ball lifting device that eliminates such drawbacks, the applicant of the present application has already proposed a cylindrical body with an open bottom facing from above into the main body of a mixing tank for mixing pachinko balls and abrasive material. A lifting pipe is erected from within the body, a spiral body rotated by a driving source is inserted into the lifting pipe, and an abrasive material gutter is inserted into the gap formed by the outer surface of the lifting pipe and the inner surface of the cylindrical body. A pachinko ball lifting device has been proposed (Japanese Patent Application No. 137805/1982), in which a supply port is communicated with the main body of the mixing tank and an outlet of a pachinko ball gutter is connected to the outlet. However, subsequent research and experiments revealed that when the number of pachinko balls flowing down from the pachinko ball gutter is small, the level of abrasive material accumulated in the storage tank increases, and sometimes this abrasive material is It turned out that it was stuck. If the level of the abrasive increases or solidifies, the pachinko balls flowing down from the pachinko ball gutter will be obstructed by the abrasive and will have difficulty flowing into the lifting pipe, making it difficult to efficiently lift the pachinko balls. Can not.

The present invention has been proposed in view of the above, and includes a cylindrical body having a through hole on the side surface and a reduced diameter opening at the lower end, which faces from above the internal mouth of the mixing tank, and a lifting pipe erected from the cylindrical body. A spiral body is inserted into the lifting pipe, the lower end of the spiral body protrudes from the lower end opening of the cylinder body, and the abrasive supply section is connected to the cylinder body and the pachinko ball gutter is connected to the mixing tank, thereby increasing the number of pachinko balls. Even when the amount of abrasive is low, a part of the abrasive introduced into the cylinder from the opening at the bottom of the cylinder flows out of the cylinder through the through hole on the side, creating a circulation flow of the abrasive in the mixing tank and solidifying the abrasive. It is an object of the present invention to provide a pachinko ball lifting device that can efficiently transport pachinko balls while preventing the above problems.

The present invention will be explained below based on drawings of embodiments.

As shown in FIG. 1, the pachinko ball lifting device 1 is vertically disposed at an appropriate position in a row of pachinko machines in which a plurality of pachinko machines 2 are arranged side by side, and the pachinko ball transport device 1 is used to transport pachinko balls discharged from each pachinko machine 2. A mixing tank 4 is provided at the inclined lower end of the pachinko ball gutter 3 for collecting balls, and the mixing tank 4
A lifting pipe 5 is erected from the top, and a spiral body 6 is inserted into the pipe 5. A sorting device 7 is connected to the upper opening 5a of the lifting pipe 5, and the sorting device 7 and the mixing tank 4 are connected by an abrasive material gutter 8.

The mixing tank 4 contains dirty pachinko balls A discharged from each pachinko machine 2 and collected by the pachinko ball gutter 3.
is stored at one point, and the abrasive B (for example, small particles of synthetic resin, rubber, etc.) supplied from the abrasive trough 8 is mixed in. According to the embodiment shown in FIG. 2, the mixing tank 4 consists of a deep main body 9 having a step on the side wall and a dish-shaped bottom plate 10 provided at the bottom. Inside the mixing tank 4, there is a through hole 1 on the side.
A gap 14 is created between the lower part of the lifting pipe 5 and the cylinder body 13 by making the cylinder body 13 having a lower end opening 12 smaller in diameter than the inner diameter in the middle thereof face from above. A gap 15 is formed between the mixing tank 4 and the side wall of the mixing tank 4.

The cylindrical body 13 guides the abrasive material B to the vicinity of the lower opening 5b of the lifting pipe 5, has a through hole on the side surface through which the abrasive material B passes, and has a diameter of the lower end opening 12 that is smaller than the inner diameter in the middle. It's made smaller. The cylindrical body 13 shown in FIG. 2 has a cylindrical member 13a with the same inner diameter in the length direction and a plurality of through holes 11 formed on the side surface of the lower end, and a cylindrical member 13a with the inner diameter of the upper opening the same as the inner diameter of the cylindrical member 13a. The auxiliary slope ring 13b is joined to a funnel-shaped auxiliary slope ring 13b whose diameter is reduced in opposite directions and whose inner diameter of the lower opening is slightly larger than the outer diameter of the spiral body 6.
The lower end opening 12 is the lower opening 5b of the lifting pipe 5.
located below. The lower end supply port 8' of the abrasive gutter 8 is connected to a portion above the through hole 11 of the cylindrical member 13a, so that the abrasive gutter 8 and the gap 14 are communicated with each other.

Further, the outlet of the pachinko ball gutter 3 is connected to the upper part of the main body of the mixing tank 4, so that the pachinko ball gutter 3 and the gap 15 are communicated with each other.

The lifting pipe 5 is made of a metal pipe material such as stainless steel, and has a lower opening 5b facing into the cylinder 13 of the mixing tank 4, and a drive source (for example, a geared motor) for rotating the spiral body 6 in the upper part. It has 16.

The spiral body 6 is formed by connecting a first spiral body 6a with a large diameter and a second spiral body 6b with a smaller diameter than the first spiral body 6a.
It protrudes from the lower opening 5b of the cylindrical body 13, and its lower end portion extends downward from the lower end opening 12 of the cylindrical body 13.
The upper end of the second spiral body 6b is connected to the output shaft 16' of the drive source 16. Note that the first spiral body 6a
is preferably made of urethane or other soft or semi-hard synthetic resin, or a flexible material such as rubber.

The sorting device 7 sorts the mixture discharged from the lift pipe 5 into pachinko balls A and abrasive material B. According to the illustrated embodiment, the sorting device 7 has a gap larger than the outer diameter of the abrasive material B, and the pachinko ball A
A screen element 17 smaller than the outer diameter of the screen is slightly inclined downward, and a saucer 18 is made to face below the screen element 17. The sloped upper end of the bamboo basket 17 is connected to the upper opening 5a of the transport pipe 5, the sloped lower end is connected to the ball storage tank 19, and a ball supply gutter 20 extending from the ball storage part 19 is connected to each pachinko machine 2. Connected. Further, the inlet 8b of the abrasive gutter 8 is connected to the inclined lower end of the receiving tray 18.

In the pachinko ball lifting device 1 described above, when the spiral body 6 is rotated by the drive source 16, the lifting surface 6a' of the first spiral body 6a scoops up the pachinko balls A accumulated near the bottom of the mixing tank 4. The abrasive material B near the lower opening of the elevating pipe 5 is introduced into the elevating pipe 5 while being mixed with the pachinko balls A. Abrasive material B is much smaller than pachinko ball A, but
In the vicinity of the lower opening 5b, the ball is introduced into the transport pipe 5 together with the pachinko balls A, either on top of the pachinko balls or sandwiched between adjacent pachinko balls. Therefore, most of the descending abrasive material B in the gap 14 is transferred to the lifting pipe 5 along with the pachinko balls A.
be introduced within. In addition, the lower opening 5 of the lifting pipe 5
Since the abrasive material B continuously descends from above around b, a large amount of abrasive material B enters into the lifting pipe 5.

When a mixture of pachinko balls A and abrasive material B is introduced into the transport pipe 5, the abrasive material B polishes and cleans the pachinko balls A by rotation of the second spiral body 6b. Then, it is pressed upward by the mixture rising sequentially from below, and the upper opening 5a of the lifting pipe 5 is
and flows into the sorting device 7.

When the mixture flows into the sorting device 7 and is placed on the basket 17, fine particles such as abrasive B, rust, and dirt fall through the gaps in the basket 17 into the tray 18, and only pachinko balls A are sorted and stored. Flows down to section 19. The abrasive material B that has fallen into the tray 18 is transferred to the abrasive material gutter 8.
is supplied to the mixing tank 4 again and used repeatedly. On the other hand, the pachinko balls A that have flown down to the ball storage section 19 pass through a ball supply gutter 20 and are supplied to each pachinko machine 2 as prize balls by a ball supply device 21 provided for each pachinko machine.

When the ball supply gutter 20 and the ball storage section 19 are filled with pachinko balls, the detector 22 facing the ball storage section 19 is turned off, the drive source 16 is stopped, and the pumping of the mixture is interrupted. Therefore, the ball supply gutter 20
Pachinko balls will not overflow from the ball storage section 19.

On the other hand, the spiral body 6 is rotated when there are no or very few pachinko balls in the mixing tank 4, for example, when there are few players and the number of pachinko balls flowing into the mixing tank 4 from the pachinko ball gutter 3 is small. When the abrasive material B is moved, the abrasive material B supplied from the abrasive material gutter 8 descends in the gap 14, a part of which is introduced into the lifting pipe 5 by the lifting surface 6a' of the first spiral body 6a, and the remaining part is introduced into the lifting pipe 5. The liquid passes through the gap between the edge of the lower end opening 12 of the cylindrical body 13 and the first spiral body 6a and accumulates at the bottom of the mixing tank 4. When a certain amount of abrasive material B has accumulated at the bottom of the mixing tank 4, the lifting surface 6a' of the first spiral body 6a scoops up the abrasive material B and forces it into the cylinder 13. Note that the abrasive B accumulated in the mixing tank 4
are the lower end opening 12 of the cylinder 13 and the first spiral body 6a.
Since the gap between the two is smaller than before, the amount is smaller than before. Therefore, the level of the abrasive in the mixing tank 4 is also lower than before. Most of the abrasive material B that has entered the cylindrical body 13 is introduced into the lifting pipe 5, but the remaining part is passed through the through hole 11 into the cylindrical body 13.
It is discharged outside and returned to the vicinity of the bottom of the mixing tank 4 again. Therefore, inside the mixing tank 4, as shown by the arrow in FIG.
A circulating flow of the abrasive material B is generated, which flows from below through the lower end opening 12 of the cylindrical body 13, from inside to outside through the through hole 11 of the cylindrical body 13, and returns to the bottom of the mixing tank 4 again. Note that the auxiliary slope ring 13 as shown in FIG.
If it is b, it will not interfere with the circulation flow.

When the abrasive materials B are constantly circulated in this way without being allowed to accumulate, the level of the abrasive materials B in the mixing tank 4 falls below the conventional level L', as shown by the chain line L in FIG. Therefore, the pachinko balls A that have flowed into the mixing tank 4 from the pachinko ball gutter 3 fall near the lower end opening 12 of the cylinder 13, and are easily scooped up by the first spiral body 6a. Further, when the number of pachinko balls from the pachinko ball trough 3 increases, the vertical height of the pachinko balls A accumulated in the mixing tank 4 becomes higher than before, and the pressure around the first spiral body 6a increases. Therefore, the first spiral body 6a
can efficiently scoop up pachinko balls A... and abrasive material B...

Further, when the abrasives B are no longer accumulated in the mixing tank 4, the abrasives B do not solidify, so the pachinko balls A smoothly flow from the top of the mixing tank 4 to near the bottom. Therefore, pachinko ball A...
can be transported.

In another embodiment of the lifting device 1 shown in FIG. Cylindrical body 1 is formed by a tapered cylindrical member.
3, and a through hole 11 is formed in the lower part of the side surface of the cylindrical body 13.
was established. When the cylindrical body 13 is tapered in this manner, there is no need to provide a member for reducing the diameter of the lower end opening 12, and the structure is simplified and manufacturing becomes easier.

Further, as shown in FIG. 5, a first spiral body 6a with an inner diameter is provided at the lower opening of the cylindrical member 13a having a uniform thickness.
Alternatively, a donut-shaped disk 13b' having a hole 12' slightly larger than the outer diameter of the cylindrical member 13a may be attached, and the through hole 11 may be opened in the lower part of the side surface of the cylindrical member 13a.

As explained above, according to the present invention, a cylindrical body with a through hole on the side surface and a diameter of the opening at the lower end smaller than the inner diameter in the middle is made to face the inside of the mixing tank from above, and the lifting is carried out from the cylindrical body. Since the pipe is erected and the spiral body is inserted into the lifting pipe and rotated, a circulating flow of the abrasive material can be generated in the mixing tank, and it is possible to prevent the abrasive material from hardening. Therefore, the pachinko balls collected in the mixing tank can be efficiently transported.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a partially vertical front view, Fig. 2 is an enlarged sectional view of the main part, Fig. 3 is a plan view of the bamboo basket, and Fig. 4 is a cylindrical body. FIG. 5 is an enlarged cross-sectional view of the main part of another embodiment with a tapered shape. FIG. FIG. 3 is an enlarged cross-sectional view of main parts. 1... Lifting device, 3... Pachinko ball gutter, 4...
Mixing tank, 5... Lifting pipe, 6... Spiral body, 8...
... Abrasive material gutter, 11 ... Through hole, 12 ... Lower end opening, 13 ... Cylindrical body, 16 ... Drive source.

Claims (1)

[Claims] 1. A cylindrical body with a through hole on the side and a diameter-reduced opening at the lower end faces the inside of the mixing tank from above, a lifting pipe is erected from within the cylindrical body, and a drive source is installed in the lifting pipe. inserting a spiral body that rotates with a screw, causing a lower end portion of the spiral body to extend downward from a lower end opening of the cylinder body, connecting an abrasive material gutter to the cylinder body, and connecting a pachinko ball gutter to the mixing tank; Pachinko ball lifting device.