JP2001120828A - Tension adjuster and game ball lifting and polishing device provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simply-structured tension adjuster having respective adjusting functions for major width adjustment in replacement, usual minor adjustment, and meandering adjustment and easily releasing tension in replacement and to provide a game ball lifting and polishing device using this tension adjuster. SOLUTION: A mechanism adjusting tension applied to a lifting belt is constructed of a tension main adjustment part 100 coping with major tension adjustment in replacement and a tension minor adjustment part 200 for adjusting tension finely. The tension main adjustment part 100 is arranged in the upper part of a standing frame 22 while the tension minor adjustment part 200 is arranged in the lower part apart from the tension main adjustment part 100. In the tension minor adjustment part 200, a meandering adjusting roller 220 moves its one end upward and downward while using the other end as an original point so as to change an inclination, and the meandering adjusting roller and a guide roller 250 pressing the lifting belt from the outside are supported rotationally forward while using one side ends as original points and displaced to a pressure releasing condition when screws stopping the other side ends are removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endless ring-shaped lifting belt stretched between an upper roller attached to an upper end of an upright frame and a lower roller attached to a lower end of the upright frame. While rotating, a guide rail with a polishing cloth erected on the front face is arranged facing the rising side of the lifting belt, and a game ball flowing in from a lower inlet is provided with the polishing cloth supported on the back face by the guide rail. A game ball lifting / polishing device for nipping with the lifting belt and polishing and discharging to an upper discharge port is provided with a tension adjusting device for adjusting a tension applied to the lifting belt and the tension adjusting device. The present invention relates to a game ball lifting and polishing apparatus.

[0002]

2. Description of the Related Art Conventionally, as a device for lifting a game ball such as a pachinko ball from a lower portion of a pachinko island to an upper portion, a game ball lifter for polishing a game ball using a belt-shaped polishing cloth and lifting the game ball to an upper portion is used. Polishing devices are known. In this type of game ball lifting and polishing apparatus, a driving roller is provided at a lower portion of an upright frame,
An upper end is provided with a driven roller, and an endless ring-shaped lifting belt is stretched between the two rollers, and the driving roller is rotated to rotate the lifting belt. Then, a guide rail with a belt-like polishing cloth installed on the front side is installed so as to face the rising surface of the lifting belt, and a game ball is placed between the lifting belt and the polishing cloth supported on the back side by the guide rail. By nipping, the game balls are lifted upward while being polished.

[0003] By the way, since the lifting belt loosens or becomes unevenly worn during a long operation, it is necessary to adjust the tension of the lifting belt by daily maintenance.
As fatigue progresses, the lifting belt must be replaced. When replacing the lifting belt, a considerable amount of tension adjustment is required due to errors in individual belt lengths, etc.In daily maintenance, fine adjustment of the tension corresponding to the gradually increasing length of the lifting belt, and Fine adjustment of meandering prevention for preventing meandering caused by advancing uneven wear is required.

In a conventional game ball lifting and polishing apparatus, a tension adjusting mechanism mainly comprising a mechanism for urging a tension roller toward a lifting belt so as to increase the tension is easily accessible by humans and can be routinely maintained. Provided at one location below the lifting and polishing device for ease and other reasons, so that all three adjustments, large adjustment at the time of replacement, daily fine adjustment, and meandering adjustment, are performed by the tension adjustment mechanism provided at the bottom of the device. Had become.

[0005]

As described above, in the conventional game ball lifting and polishing apparatus, all three adjustment functions of large adjustment at the time of replacement, daily fine adjustment, and meandering adjustment are performed at the lower part of the apparatus. In this case, the structure of the tension adjusting mechanism is complicated because the tension adjusting mechanism is concentrated on the tension adjusting mechanism. Further, in the case where a mechanism for releasing the tension application by each roller is provided in order to facilitate the exchange of the lifting belt, the configuration of the apparatus is further complicated.

The present invention has been made in view of such problems of the prior art, and has a simple structure while providing various adjustment functions of large adjustment at the time of replacement, daily fine adjustment and meandering adjustment. Moreover, it is an object of the present invention to provide a tension adjusting device capable of easily releasing the tension at the time of replacement and a game ball lifting and polishing device using the same.

[0007]

The gist of the present invention to achieve the above object lies in the following inventions. [1] An endless ring-like structure stretched between an upper roller (24) attached to the upper end of the standing frame (22) and a lower roller (23) attached to the lower end of the standing frame (22). While rotating the lifting belt (25),
A guide rail (5) having a polishing cloth (60)
1) is arranged to face the rising side (25a) of the lifting belt (25), and the game balls flowing from the lower introduction port (31) are fed to the polishing pad (25) with the back surface supported by the guide rail (51). 60) is mounted on a game ball lifting / polishing device for nipping and lifting the upper discharge port while being sandwiched between the lifting belt (25) and a tension for adjusting a tension applied to the lifting belt (25). In the adjusting device, a tension main adjusting section (1) for mainly adjusting a tension applied to the lifting belt (25).
00) and a fine tension adjusting section (200) for finely adjusting the tension applied to the lifting belt (25), and the main tension adjusting section (100) is provided on the upper part of the upright frame (22). Wherein the fine tension adjusting section (200) is arranged below the standing frame (22).

[2] The tension main adjusting section (100) adjusts the tension by vertically moving both ends of an upper roller shaft (24a) rotatably supporting the upper roller (24). The tension fine adjustment unit (200) includes a tension roller (210), a meandering adjustment roller (220), and a first roller that rotatably supports the tension roller (210).
A support mechanism (211 to 214) and a second support mechanism (22) rotatably supporting the meandering adjustment roller (220).
2, 230), and the first support mechanism (211 to 21-2) is provided.
14) a support shaft (211) for the tension roller,
While maintaining parallel and horizontal with the lifting belt (25), the lifting belt (25) is supported so as to be movable and adjustable in a direction to increase and decrease the tension applied to the lifting belt (25). The second support mechanism (222, 230) has a barrel-shaped configuration in which the outer diameter gradually decreases from the center toward both right and left ends. ) Is supported so that the inclination can be adjusted up and down [1].
The tension adjusting device according to item 1.

[3] The second support mechanism (222, 23)
0) a roller shaft (221) rotatably supporting the meandering adjusting roller (220), and the roller shaft (221).
And a second support portion (230) for supporting the other end of the roller shaft (221), wherein the first support portion (222) One end of the shaft (221) is used as a base point for the roller shaft (22).
1) is supported so as to be capable of tilting up and down. The second support portion (230) includes a support frame (231) fixed to the upright frame (22), and a moving block (232).
And a first screw (234) having an operation knob (233) at one end thereof, and a second screw (236) having an operation handle (235) at one end thereof.
2) includes a first screw hole (237) penetrating in a predetermined direction.
And a second screw hole (238) that penetrates the first screw hole (237) so as to be orthogonal to the torsion position. The support frame (231) is provided with the first screw support portion ( 2
31b), the side wall portion (231a), and the side wall portion (23
1a), the side wall (231a) has a front side facing the roller shaft (2).
The other screw side of the second screw hole of the moving block (232) is provided so as to be in contact with the peripheral surface of the roller shaft (221) at the other end of the moving block (232). One side surface on which (238) exists is the side wall portion (23).
1a) in contact with the back side of the moving block (23).
The first screw (234) screwed into the first screw hole (237) of (2) is rotatably supported at a predetermined position with its axial direction being vertical, and the elongated screw (234) of the side wall (231a) is formed. 239)
Is vertically elongated so as to correspond to the movement locus of the second screw hole (238) formed when the moving block (232) is screwed up and down in response to the rotation of the first screw (234). The roller shaft (221) has an insertion hole (241) at the other end thereof, which penetrates the roller shaft (221) in a direction perpendicular to the front surface of the side wall (231a). The roller shaft (221) about the base point
Is formed to be horizontally long so as to be able to communicate with the elongated hole (239) of the side wall portion (231a) when tilted up and down.
The second screw (236) is connected to the moving block (232) through the insertion hole (241) formed at the other end of the roller shaft (221) and the elongated hole (239) of the side wall (231a). ) Is screwed into the second screw hole (238), and the roller shaft (2) is inserted between the moving block (232) and the operation handle (235) by loosening.
21) and the side wall (231a) is sandwiched between the movable block (232) to prevent the vertical movement of the moving block (232), and to switch between the loose state in which the vertical movement is possible. The tension adjusting device according to [2].

[4] The meandering adjusting roller (220) is
The lifting belt (25) is supported so as to be displaceable between a set state where the belt is pressed from the outside and a released state where the lifting belt (25) is pivoted forward about the end on the base point side [2].
Or the tension adjusting device according to [3].

[5] The tension roller (210) so that the lifting belt (25) protrudes from the inside to the outside.
And a guide roller (25
0) and the meandering adjusting roller (220) are disposed above and below the tension roller (210), and the guide roller (250) is set in a state where the lifting belt (25) is pressed from the outside. The tension adjusting device according to [4], wherein the tension adjusting device is supported so as to be displaceable in a released state in which the shaft has been pivoted forward with respect to one of the left and right ends of the shaft.

[6] A game ball lifting and polishing apparatus comprising the tension adjusting device according to [1], [2], [3], [4] or [5].

The present invention operates as follows. A tension adjusting device for adjusting the tension applied to the lifting belt (25),
The main tension adjusting section (100) for mainly adjusting the tension and the fine tension adjusting section (200) for finely adjusting the tension are divided, and the main tension adjusting section (100) is mounted on the upright frame (22). On the upper part, a fine tension adjusting section (200) is provided on an erect frame (2).
2) Separately arrange them in the lower part.

As described above, since the tension adjusting mechanism is divided into the main tension adjusting section (100) and the fine tension adjusting section (200), each of them can be realized with a relatively simple structure. The main adjustment that involves a significant change in tension is the lifting belt (25).
It is sufficient to perform the replacement only at the time of replacement, so that the main tension adjusting section (10) is mounted on the upper part of the standing frame (22), which is not very workable.
Even if 0) is arranged, daily maintainability does not decrease.

An upper roller shaft (24a) for rotatably supporting the upper roller (24) includes a tension main adjusting section (100).
Adjust the tension by moving both ends up and down. The up-down movement is realized by, for example, a screw feed mechanism having a screw-nut relationship.

The fine tension adjusting section (200) has a tension roller (210) and a meandering adjusting roller (220), and a first support mechanism (211 to 214) for rotatably supporting the tension roller (210). Is a lifting belt (2
The tension roller (210) is supported so as to be movable and adjustable in the direction of increasing or decreasing the tension applied to 5). Fine adjustment of the tension is performed by sliding the position of the tension roller (210) back and forth with respect to the belt surface.

The meandering adjusting roller (220) has a barrel shape whose outer diameter gradually decreases from the center toward both left and right ends. The meandering adjustment roller (220) is rotatably supported by the second support mechanism (222, 230).
The meandering adjustment is performed by changing the inclination of the meandering adjustment roller (220) from one of the left and right ends of the meandering adjustment roller (220).

Since the inclination of the roller shaft (221) is adjusted with one end of the meandering adjusting roller (220) as a starting point, the structure is simplified as compared with the case where the adjusting mechanism is provided at both ends.

More specifically, the second support mechanism (222, 230) supports a roller shaft (221) rotatably supporting the meandering adjusting roller (220) and one end of the roller shaft (221). The first support portion (222) and the roller shaft (22)
A second support portion (230) for supporting the other end of 1),
The first support portion (222) supports one end of the roller shaft (221) so that the roller shaft (221) can tilt up and down from this point. For example, the roller shaft (22
At one end of 1), a shaft hole that is orthogonal to the roller shaft and penetrates horizontally is provided.
1) is supported.

The second support portion (230) includes a support frame (231) fixed to an upright frame (22), a moving block (232), and a first screw (233) having an operation knob (233) at one end. 234) and an operation handle (23
5) and a second screw (236) having a first screw hole (23) penetrating through the moving block (232) in a predetermined direction.
7) and a second screw hole (238) penetrating the first screw hole (237) so as to be orthogonal to the twist position.

The support frame (231) is provided with a first screw support portion (2).
31b), the side wall portion (231a), and the side wall portion (23
1a), the side wall portion (231a) having the front side abutting on the peripheral surface of the roller shaft (221) at the other end side of the roller shaft (221). It is erected in. First screw support (231b)
Is screwed into the first screw hole (237) of the moving block (232) in a state where one side of the moving block (232) where the second screw hole (238) is present abuts against the back side of the side wall (231a). The first screw (234) is rotatably supported at a predetermined position with its axial direction being vertical. Therefore, when the first screw (234) is turned, the moving block (232) moves up and down.

The long hole (239) of the side wall (231a)
The moving block (23) is rotated according to the rotation of the first screw (234).
The second screw hole (238) is vertically elongated so as to correspond to the movement locus of the second screw hole (238) formed when the second screw hole (238) is vertically moved by screw feed. The other end of the roller shaft (221) has a side wall (2
31a) the roller shaft (22) perpendicular to the front surface
When the insertion hole (241) penetrating through 1) is inclined up and down around the previous base point, the long hole (23
It is formed horizontally long so that it can communicate with 9).

The second screw (236) is connected to the roller shaft (22).
It is screwed into the second screw hole (238) of the moving block (232) through the insertion hole (241) formed at the other end of (1) and the elongated hole (239) of the side wall (231a). Second
When the screw (236) is tightened and the roller shaft (221) and the side wall (231a) are clamped between the moving block (232) and the operation handle (235) of the second screw (236), the moving block (232) is closed. ) Is stopped. On the other hand, when the second screw (236) is loosened,
By turning the screw (234), the moving block (232) is in a loose state in which it can move up and down.

Further, the meandering adjusting roller (220) is displaced between a set state in which the lifting belt (25) is pressed from the outside and a released state in which the meandering adjustment roller (220) is pivoted forward about the end on the base point of the inclination. If possible, the second screw (23
By simply removing 6), the meandering adjustment roller (220) can be released from the lifting belt (25), and the replacement of the lifting belt (25) becomes easy.

A tension roller (210) is disposed so that the lifting belt (25) protrudes from the inside to the outside, and a guide roller (250) rotatably supported by a shaft and a meandering adjusting roller (220) are tensioned. Roller (21
0), which are arranged on the outer side of the lifting belt (25) in the vicinity of the upper and lower sides, and the meandering adjustment roller (220) and the guide roller (25)
In the case where both of the rollers are supported so that they can be displaced between the set state and the released state, in the set state, the rollers are alternately arranged on the front and back of the lifting belt (25). Can be. Guide rollers (25
0) and the meandering adjusting roller (220) can both be displaced to a released state in which the one end is pivoted forward, so that the lifting belt (25) can be easily replaced as compared with the case where the entire roller is removed. Can be.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Each drawing shows an embodiment of the present invention. As shown in FIG. 2, the game ball lifting and polishing apparatus 1
Numeral 0 stands up from the lower stage to the upper stage in the gaming machine island 1 in the middle of the gaming machine island 1 in which the plurality of pachinko machines 2 are juxtaposed. The game ball lifting and polishing apparatus 10 takes in the game balls (pachinko balls) collected by the collection gutter 3 into the lower tank 4 arranged near the bottom of the lower stage of the game machine island 1 after being used in each pachinko machine 2. The polishing is performed while being transported to the upper tank 5 provided in the upper stage of the gaming machine island 1.

The upper tank 5 is connected to a supply gutter 7 for supplying game balls to the gaming machine 2, and extends so as to be inclined downward toward both ends of the gaming machine island 1. . The supply gutter 7 descends almost directly below the gaming machine island 1 at both ends of the gaming machine island 1 and is connected to the end of the collection gutter 3. The supply gutter 7 is provided with bellows which individually communicate with each of the gaming machines 2 and supply game balls 2 flowing down the supply gutter 7 to the gaming machines 2.

FIG. 1 shows a side view of the game ball lifting and polishing apparatus 10, and FIG. 3 shows a cross section of the game ball lifting and polishing apparatus 10, respectively. As shown in FIG.
Reference numeral 0 denotes a main body 20 and a guide frame 50. The main body 20 includes a vertically long frame 22, which is provided upright on the base member 21, a drive roller 23 rotatably and horizontally supported at the lower end of the frame 22, A driven roller 24 rotatably and horizontally supported at the upper end of the installation frame 22, and an endless lifting belt 25 spanned between the driving roller 23 and the driven roller 24 are provided. The drive roller 23 includes a motor 23a
(See FIG. 6).

At several positions between the driven roller 24 and the driving roller 23, backup rollers 26 are arranged at predetermined intervals. The backup roller 26 is disposed so as to be in contact with the rear surface of the lifting belt 25 on the rising side 25a. By supporting the back surface with the backup roller 26, the lifting belt 25 rises while maintaining a substantially flat surface.

Appropriate tension is applied to the lifting belt 25 by an upper tension portion 100 for vertically adjusting the driven roller 24 and a lower tension mechanism 200 having a tension roller and the like. The tension adjusting device including the upper tension unit 100 and the lower tension mechanism 200 will be described later in detail.

At the lower end of the main body 20, an introduction port 31 for aligning and introducing game balls from the lower tank 4 is provided. 5 is provided with a discharge port 32 for discharging.

As shown in FIG. 3, the guide frame portion 50 includes a guide rail 51 disposed facing the outer surface of the rising side 25a of the lifting belt 25, a guide frame 52 for housing and supporting the guide rail 51, and a guide frame 52. A spring 53 for urging the guide rail 51 provided therein toward the lifting belt 25 is provided.

The guide frame 52 has a substantially U-shaped section having a flat portion having a width similar to the width of the main body portion 20 and side portions extending from both left and right edges of the flat portion to the lifting belt 25 side. A polishing belt guide groove 54 extending in the vertical direction facing the inside near the ends of both side surfaces thereof; and a polishing belt guide groove 54 which is located on the flat portion side of the guide frame 52 with respect to the polishing belt guide groove 54 and has both sides. A guide rail groove 55 extending in the vertical direction facing the inside of the surface is formed.

The guide rail 51 is provided with the guide rail groove 5.
5, both ends of which are supported. Many springs 53
It is inserted in a compressed state between the rear surface of the guide rail 51 and the flat portion of the guide frame 52. Guide rail 5
A plurality of ball guide paths 1 are formed of rubber having elasticity, and a plurality of ball guide paths extending vertically with a semicircular concave cross section are formed on the front surface facing the lifting belt 25 in parallel. I have.

On the front surface of the guide rail 51, an abrasive cloth belt 60 is installed. The polishing cloth belt 60 has one end fixed by a fixed clamper 91 (see FIG. 1) attached to a lower rear portion of the guide frame portion 50, rotates around the lower end of the guide frame portion 50, and extends along the front surface of the guide rail 51. It is stretched from the lower end to the upper end, turns around the upper end of the guide frame part 50, and returns to the guide frame part 5 again.
The movable clamper 92 is provided on the upper surface of the back of the guide frame 50.
It is pinched and fixed.

The guide frame 52 has one end in the left-right direction supported by the standing frame 22 by a hinge 27 (see FIG. 3) so as to be openable and closable in a door shape. The hinges 27 are provided at several locations on one outer side surface of the game ball lifting and polishing apparatus 10 at predetermined intervals up and down. The other end in the left-right direction of the guide frame 52 is removably locked to the standing frame 22 by locking mechanisms 70 provided at several locations at predetermined intervals in the vertical direction. The locking mechanism 70 is configured to pull the guide frame 50 toward the main body 20 with a predetermined tension in a locked state.

A clearance adjusting mechanism 80 is mounted near the locking mechanism 70 and on the inner surface of the side wall of the standing frame 22. By turning the nut-shaped knob 82 rotatably held at a predetermined position of the gap adjusting mechanism 80, the knob 82
The bolt-shaped shaft portion 83 fitted into the main body 20 moves forward and backward, and the gap between the guide frame 50 and the main body 20 urged toward the main body 20 by the locking mechanism 70 can be adjusted. . The game ball 8 is provided on the rising surface 25 of the lifting belt.
a and the back surface are sandwiched between the polishing cloth 60 supported by the rubber guide rails 51, and are spun up while being rotated and polished by the elevation of the lifting belt, and are fed upward.

FIG. 4 shows an upper side surface of the game ball lifting and polishing apparatus 10. The upper tension portions 100 are provided on both sides of the standing frame 22 as targets. The upper tension portion 100 includes a support plate 101 screwed to a side surface near the upper end of the upright frame 22 and a support arm 1 fixed to the support plate 101 and formed with a screw hole vertically penetrated.
02, a bolt 103 screwed into the screw hole of the support arm 102 from below, and a nut 104 screwed to the bolt 103 to prevent the bolt 103 from rotating. The nut 104 and the support arm 102 function as a double nut to prevent rotation of the bolt 103.

A driven roller shaft 24a that rotatably supports the driven roller 24 is inserted into a vertically long hole and is supported so as to be movable up and down, so that the upper end of the bolt 103 contacts the driven roller shaft 24a. It has become.

FIGS. 5 to 9 show the lower tension mechanism 200.
Is shown. Among them, FIG.
FIG. 6 is a partial cutaway view from the lower side surface of FIG. 6, FIG. 6 is a lower front view of the game ball lifting and polishing apparatus 10, and FIG.
FIG. 8 is a sectional view taken along the line AA in FIG.
Represents the BB cross section in FIG.

The lower tension mechanism 200 has a tension roller 210, a meandering adjustment roller 220 disposed near the upper portion thereof, and a guide roller 250 disposed near the lower portion of the tension roller 210. The tension roller 210 is disposed so as to project the lifting belt 25 from the inside to the outside. The meandering adjustment roller 220 and the guide roller 250 are arranged so as to press the lifting belt 25 from outside. The lifting belt 25 includes a tension roller 210, a meandering adjustment roller 220,
It is alternately pressed from the front and back by the guide roller 250.

The support shaft 211 that supports the tension roller 210 rotatably and horizontally has holes at both ends for passing bolts 212 erected on the flat portion 22 a of the erected frame 22. After a spring 213 is loosely fitted around the bolt 212, a hole formed in the support shaft 211 is passed through, and a nut 214 is screwed onto the hole. The tension roller 210 is adjusted to move back and forth by tightening and loosening the nut 214, so that the tension applied to the lifting belt 25 can be increased or decreased.

The second support mechanism that supports the meandering adjustment roller 220 includes a roller shaft 221 that rotatably supports the meandering adjustment roller 220, a first support portion 222 that supports the left end of the roller shaft 221, and a roller shaft. 221 is supported by a second support 230 supporting the right end.

The first support portion 222 is provided with a support bracket 226 for supporting both ends of a support shaft 225 inserted through a shaft hole vertically penetrating the left end portion of the roller shaft 221, and a support shaft 225 having an earlier axial direction.
It is configured to be rotatably supported by a rotation shaft (not shown) that is orthogonal to and horizontal to the drawing. This allows the roller shaft 2
Numeral 21 is rotatable up and down and back and forth with the first support portion 222 as a base point.

The second support portion 230 has a support frame 231 fixed to the standing frame 22, a moving block 232, a first screw 234 having an operation knob 233 at an upper end, and an operation handle 235 at an end. And a second screw 236.

As shown in FIG. 10, the moving block 232 has a first screw hole 237 vertically penetrated, and a second screw hole 237 penetrated perpendicularly to the first screw hole 237 at a twist position.
A screw hole 238 is formed.

The support frame 231 has a U-shaped cross section, and has a side wall portion 231a forming an upright surface, and a first screw support portion 231 formed of a surface bent horizontally from the upper and lower ends of the side wall portion 231a.
b, and a vertically long hole 239 formed in the side wall portion 231a.

When the meandering adjustment roller 220 is set at a position where the lifting belt 25 is pressed, the front surface of the side wall 231 a is positioned at the right end of the roller shaft 221. It is erected at a position where it abuts.

The first screw support portion 231b is provided with a first screw 234 screwed into the first screw hole 237 of the moving block 232.
Is rotatably supported at a position where the side surface where the second screw hole 238 of the moving block 232 exists contacts the back side of the side wall portion 231a, and at a position where the axial direction is vertical. That is,
The first screw support portion 231b has a hole for inserting the first screw 234 at a predetermined position on the facing surface. The first screw 234 is inserted into the hole from above, and the first screw 234 is pinched to the support frame 231. The lower end is fixed with a double nut 240 with a slight margin so as not to be carried out. As a result, the first screw support portion 231b holds the first screw 234 immovably up and down and rotatably.

The elongated holes 239 formed in the support frame 231 correspond to the movement locus of the second screw holes 238 when the moving block 232 is screwed up and down according to the rotation of the first screw 234. It is set up vertically.

The right end of the roller shaft 221 is provided with a support frame 23.
An insertion hole 241 penetrating in a direction perpendicular to the front surface and extending horizontally in the axial direction is formed. The insertion hole 241 is
When the roller shaft 221 is vertically inclined with the first support portion 222 as a base point, the roller shaft 221 is formed to be horizontally long so as to always communicate with the elongated hole 239 of the side wall portion 231a.

The second screw 236 passes through the insertion hole 241 formed at the right end of the roller shaft 221 and the elongated hole 239 of the side wall portion 231a.
8 is screwed. By operating the operation handle 235, the roller shaft 221 and the side wall portion 23 are moved between the operation handle 235 and the moving block 232.
When tightening the second screw 236 until the state where 1a is fixed,
The moving block 232 is brought into a stationary state in which the vertical movement of the moving block 232 is suppressed. On the other hand, the operating handle 23 is about 90 degrees from the fixed state.
Turn 5 to loosen the second screw 236,
32 switches to a loose state in which it can move up and down.

The guide roller 250 has a support mechanism 252 in which the left end of the support shaft 251 has the same structure as the first support portion 222.
Supported by. A roller shaft 2 is provided at the right end of the support shaft 251.
An elongated hole 253 similar to 21 is provided. Support shaft 251
Is fixed to a support base 254 provided on the standing frame 22 with a screw 255 inserted through the elongated hole 253. The meandering adjustment roller 220, the roller shaft 221, the first support portion 22
2 is a guide roller 250, a support shaft 251, a support mechanism 25
2 and common parts.

Next, the operation will be described. The large tension adjustment required when the lifting belt 25 is replaced is performed by the upper tension unit 100. That is, loosen the nut 104,
After the bolt 103 is rotated to substantially adjust the tension of the lifting belt 25, the nut 103 is tightened and locked until the nut 104 contacts the support arm 102.

When replacing the lifting belt 25, the operation handle 235 is turned to loosen the second screw 236 and to remove it. As a result, the meandering adjustment roller 220 is rotatable forward with respect to the first support portion 222, and the lifting belt 25
, The meandering adjustment roller 220 can be easily displaced to a release state where it is not pressed. Similarly, when the screw 255 is loosened and removed, the guide roller 25 starts from the support mechanism 252 as a base point.
0 can be rotated forward, and the guide roller 250 can be easily displaced to a release state in which the guide roller 250 is not pressed against the lifting belt 25.

Fine adjustment in daily maintenance is performed only by the lower tension mechanism 200. The meandering caused by uneven wear of the lifting belt 25 is corrected by changing the inclination of the meandering adjusting roller 220. Since the meandering adjustment roller 220 has a so-called barrel shape, the inclination of the meandering adjustment roller 220 changes the contact with the lifting belt 25, and can apply the tension to the left and right sides of the belt unevenly.

To adjust the meandering, first, the operation handle 235 is rotated by about 90 degrees to loosen the second screw 236, and then the operation knob 233 is turned to turn the meandering adjusting roller 22.
Adjust the zero slope. Here, when the operation knob 233 is turned to the left, the moving block 232 is screwed and moved downward. Accordingly, the meandering adjustment roller 220 rotates around the first support portion 222 at the left end as a base point, and changes its inclination such that the right end is directed downward. On the other hand, when the operation knob 233 is turned clockwise, the moving block 232 is screwed and moved upward, and the inclination is changed so that the right end is directed upward with the first support portion 222 at the left end as a base point.

When the operation knob 233 is turned to adjust the inclination of the meandering adjusting roller 220 so that there is no meandering,
Turn the operation handle 235 to tighten the second screw 236,
The moving block 232 is locked so that it cannot move up and down.

If the lifting belt 25 extends for a long time and the tension decreases, the tension is increased by adjusting the bolt 212 to move the tension roller 210 forward.

As described above, the tension adjusting mechanism is divided into the upper tension section 100 and the lower tension mechanism 200.
Each of them could be realized with a relatively simple structure.
Adjustment of the upper tension portion 100 is performed by the lifting belt 25.
Since it is only at the time of replacement, even if it is arranged above the standing frame 22, daily maintainability does not decrease.

Further, since the inclination of the meandering adjustment roller 220 is adjusted with the left end side of the first support portion 222 as a base point (center of rotation), the structure is simplified as compared with the case where the adjustment mechanism is provided at both ends. Adjustment also becomes easy. Further, since the meandering adjustment roller 220 and the guide roller 250 are structured to be able to rotate forward around one end of the support shaft, the loosening and pulling out of one screw presses the lifting belt 25 from the outside. Can be displaced so that the lifting belt 25 can be easily replaced.

In the embodiment described above, the tension roller 210, the meandering adjustment roller 220, the guide roller 2
Although the lower tension mechanism 200 is configured by 50 and their support mechanisms, the configuration is not limited to the illustrated one as long as the configuration allows fine adjustment of tension and meandering. Also, regarding the structure of the upper tension portion 100,
It is not limited to the example as long as the tension can be largely adjusted.

[0063]

According to the game ball lifting and polishing apparatus of the present invention, the tension adjusting mechanism of the lifting belt is divided into the main tension adjusting section and the fine tension adjusting section. In comparison, each can be realized with a relatively simple structure. Also, the main adjustment, which can significantly change the tension, only needs to be performed when replacing the lifting belt, so the main tension adjustment section is placed at the top of the standing frame, and only the fine tension adjustment section is placed at the bottom. However, daily maintainability does not decrease.

Further, since the inclination of the roller shaft is adjusted with one end of the meandering adjustment roller as a base point, the structure is simplified as compared with a case where adjustment mechanisms are provided at both ends. Furthermore, since the meandering adjustment roller and the guide roller are structured so as to be rotatable forward with one end of the support shaft as a starting point, the screw can be removed only by removing the other end, and the lifting belt is released without pressing the lifting belt. Each roller can be displaced, and the work of replacing the lifting belt becomes easy.

[Brief description of the drawings]

FIG. 1 is a side view showing a game ball lifting and polishing apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of an installation state of a game ball lifting and polishing apparatus according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a game ball lifting and polishing apparatus according to one embodiment of the present invention.

FIG. 4 is an explanatory view showing an upper tension portion disposed at an upper portion of the game ball lifting and polishing apparatus according to one embodiment of the present invention.

FIG. 5 is a side view showing a lower tension mechanism disposed at a lower portion of the game ball lifting and polishing apparatus according to one embodiment of the present invention.

FIG. 6 is a front view showing a lower tension mechanism disposed at a lower portion of the game ball lifting and polishing apparatus according to one embodiment of the present invention.

FIG. 7 is a front view showing a second support portion of a lower tension mechanism disposed at a lower portion of the game ball lifting and polishing apparatus according to one embodiment of the present invention.

8 is a cross-sectional view taken along the line AA of FIG. 7 of a second support portion of a lower tension mechanism disposed below the game ball lifting and polishing apparatus according to the embodiment of the present invention.

FIG. 9 is a cross-sectional view of the second support portion of the lower tension mechanism disposed at a lower portion of the game ball lifting and polishing apparatus according to the embodiment of the present invention, taken along a line BB in FIG. 7;

FIG. 10 is a perspective view showing a moving block included in a second support portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Gaming machine island 2 ... Pachinko machine 4 ... Lower tank 5 ... Upper tank 8 ... Gaming ball 10 ... Gaming ball lifting and polishing device 20 ... Main body 22 ... Standing frame 22a ... Flat portion 23 ... Drive roller 24 ... Driving roller 24a ... driven roller shaft 25 ... lifting belt 26 ... backup roller 27 ... hinge 31 ... introduction port 32 ... discharge port 50 ... guide frame part 51 ... guide rail 52 ... guide frame 53 ... spring 54 ... polishing belt guide groove 55 ... guide Rail groove 60 ... Polishing cloth belt 70 ... Locking mechanism 80 ... Gap adjusting mechanism 82 ... Knob part 83 ... Shaft part 91 ... Fixed clamper 92 ... Movable clamper 100 ... Upper tension part 101 ... Support plate 102 ... Support arm 103 ... Bolt 104: nut 200: lower tension mechanism 210: tension roller 211, 225: support shaft 2 2 Bolt 213 Spring 214 Nut 220 Meandering Adjustment Roller 221 Roller Shaft 222 First Support 226 Support Bracket 230 Second Support 231 Support Frame 231a Sidewall 231b First Screw Support 232 ... moving block 233 ... operation knob 234 ... first screw 235 ... operation handle 236 ... second screw 237 ... first screw hole 238 ... second screw hole 239,253 ... long hole 240 ... double nut 241 ... insertion hole 250 ... guide Roller 251: Support shaft 252: Support mechanism 254: Support base 255: Screw

Claims (6)

[Claims] 1. An endless ring-shaped lifting belt stretched between an upper roller attached to an upper end of an upright frame and a lower roller attached to a lower end of the upright frame. A guide rail on which a polishing cloth is erected is arranged to face the rising side of the lifting belt, and a game ball flowing in from a lower inlet is formed by the polishing cloth and the lifting belt whose back surface is supported by the guide rail. A tension adjusting device for adjusting the tension applied to the lifting belt, which is provided in a game ball lifting and polishing device for nipping and polishing and lifting to an upper discharge port, wherein the tension applied to the lifting belt is mainly adjusted. And a tension fine adjustment unit for finely adjusting the tension applied to the lifting belt, wherein the tension main adjustment unit is disposed above the upright frame,
A tension adjusting device, wherein the fine tension adjusting section is arranged below the standing frame. 2. The tension main adjustment section adjusts tension by vertically moving both ends of an upper roller shaft rotatably supporting the upper roller, wherein the tension fine adjustment section includes a tension roller, A meandering adjustment roller, a first support mechanism rotatably supporting the tension roller, and a second support mechanism rotatably supporting the meandering adjustment roller, wherein the first support mechanism supports the tension roller. Axis
While maintaining parallel and horizontal with the lifting belt, the lifting belt is supported so as to be movable and adjustable in a direction to increase and decrease the tension applied to the lifting belt.The meandering adjustment roller has an outer diameter from a center toward both left and right ends. Wherein the second support mechanism is configured to support the meandering adjustment roller so that the inclination can be adjusted up and down with one of the left and right ends as a base point. The tension adjusting device according to claim 1, wherein 3. The second support mechanism supports a roller shaft rotatably supporting the meandering adjustment roller, a first support portion supporting one end of the roller shaft, and supporting the other end of the roller shaft. A second support portion, wherein the first support portion supports one end of the roller shaft so that the roller shaft can tilt up and down with respect to the one end, and the second support portion includes: The moving frame includes a support frame fixed to the standing frame, a moving block, a first screw having an operation knob at one end, and a second screw having an operation handle at an end. A first screw hole that penetrates in a direction, and a second screw hole that penetrates the first screw hole so as to be orthogonal to the position of the twist, and the support frame includes the first screw support portion, A side wall, and an elongated hole formed in the side wall. The front side is erected on the other end side of the roller shaft so as to contact the peripheral surface of the roller shaft, and the first screw support portion is provided on the one side where the second screw hole of the moving block exists. The first screw screwed into the first screw hole of the moving block in a state where a side surface is in contact with the back side of the side wall portion.
The screw is rotatably supported at a predetermined position with its axial direction being vertical, and the elongated hole of the side wall portion is used when the moving block is screwed in accordance with the rotation of the first screw and moves up and down. The roller shaft is vertically elongated so as to correspond to the movement locus of the second screw hole. The other end of the roller shaft penetrates the roller shaft in a direction perpendicular to the front surface of the side wall portion. An insertion hole is formed so as to be laterally long so as to be able to communicate with the elongated hole of the side wall portion when the roller shaft is inclined up and down around the base point. It is screwed into the second screw hole of the moving block through the insertion hole formed at the end and the elongated hole of the side wall, and loosely tightened.
The roller block and the side wall are sandwiched between the moving block and the operation handle to switch between a fixed state in which the moving block is prevented from moving up and down and a loose state in which the moving block is movable up and down. The tension adjusting device according to claim 2, wherein the tension adjusting device is provided. 4. The apparatus according to claim 1, wherein the meandering adjusting roller is displaceably supported between a set state in which the lifting belt is pressed from the outside and a released state in which the meandering adjustment roller is pivoted forward about the end serving as the base point. The tension adjusting device according to claim 2 or 3, wherein: 5. The tension roller is disposed so as to protrude the lifting belt from the inside to the outside, and a guide roller rotatably supported on a shaft and the meandering adjustment roller are disposed vertically above and below the tension roller. Wherein the guide roller is displaceably supported in a set state in which the lifting belt is pressed from the outside and a released state in which the guide roller is pivoted forward around one of the right and left ends of the support shaft. 5. The tension adjusting device according to 4. 6. A game ball lifting and polishing apparatus provided with the tension adjusting device according to claim 1, 2, 3, 4, or 5.