JP5507857B2 - Game ball lifting and polishing equipment - Google Patents

Description

  The present invention relates to a game ball lifting and polishing apparatus (hereinafter simply referred to as a lifting and polishing apparatus) provided on a game island.

  The lifting and polishing apparatus is used to remove gaming balls (pachinko balls, hereinafter referred to as spheres) that have been removed from the gaming machine as detaching balls and collected in a collection box, and are polished while being pumped. It is used to discharge from the upper discharge port to the supply tank.

In general, a lifting and polishing apparatus winds a conveyor belt composed of an endless belt between a driving pulley provided at the lower part of a frame having a height of about 2 to 3 m and a driven pulley provided at the upper part of the frame. The conveyor belt is stretched by a tension pulley provided on the lower side of the conveyor belt, a motor for applying rotational force to the drive pulley is attached to the lower part of the frame, and a polishing cloth is held on the conveyor belt ascending side. In addition, a door having guide rails that form grooves for guiding the balls one by one on the polishing cloth is attached to the frame so as to be openable and closable for replacement of the polishing cloth.

  Then, the ball is polished by lifting the ball while being rubbed against the polishing cloth by the conveyor belt rotated by the motor. Therefore, it is necessary to press the polishing cloth with a required pressure against the ball to be fed. Conventionally, an elastic body such as a thick plate sponge or a plurality of coil springs is provided between the guide rail and the door inner surface in order to always press the polishing cloth against the sphere regardless of the movement position of the sphere. It was.

  In addition, a conventional polishing cloth is wound in the form of a roll on a first shaft, the tip of the polishing cloth is fixed to a second shaft, and the two shafts are on both ends in the longitudinal direction of the guide rail. It was installed in a state where a fixed length of polishing cloth between the two shafts was fixed to the surface of the guide rail and opposed to the conveyor belt. When the used surface becomes dirty, the used fixed-length abrasive cloth is wound around the second shaft, and the unused fixed-length abrasive cloth is rewound from the roll of the first shaft and fixed to the guide rail again. Was. Further, in the conventional lifting and polishing apparatus, only the elastic body is used to elastically press the polishing cloth against the sphere, and the pressing roller that supports the rising side of the conveyor belt in a tensioned state along the vertical surface, It was a fixed roller rotatably supported by a shaft fixed to the frame on the side opposite to the guide rail of the conveyor belt.

Japanese Patent No. 4183417 JP 2003-251055 A Japanese Utility Model Publication No. 2-25288

In the conventional apparatus having the above configuration, as shown in FIG. 8, the pressing force due to the elasticity of the sponge 26 attached to the door 8 is applied to the guide rail on the ball P that is moved up the surface of the polishing pad 14 ′ by the conveyor belt 5. 12 and the polishing cloth 14 ', but since the pressing roller 17' supporting the rising side of the conveyor belt in a tensioned state along the vertical surface is a fixed roller, the ball P to be fed is pressed down. When passing between the center of the roller 17 ′ and the portion of the polishing pad 14 ′ that exists on the horizontal line passing through the center of the pressing roller, the elasticity of the sponge 26 is greatly reduced from the fixed roller 17 ′ and the conveyor belt 5. As a force, the ball P is applied to the polishing pad 14 '.

Conventional polishing pad, as an example, 50% cotton, formed of a woven fabric of 50% blended yarn polyester, rolled thickness 1.7 mm, width 150 mm, length 18m, those mass 2.5kg into a roll It has been used also for. Therefore, the conventional polishing cloth has a strength sufficient to withstand the pressure received from the sphere. Therefore, when it becomes dirty, it is removed from the lift polishing apparatus, washed and recycled.

  However, the conventional long belt-like polishing cloth is expensive, is not easy to clean, and costs high, so that reduction in recycling cost has been demanded. In addition, since the use height of the polishing cloth in the conventional lift polishing apparatus was about 2.5 m from the floor surface, maintenance and maintenance of the polishing cloth is necessary because it requires the use of a stepping board for the replacement and replacement of the polishing cloth. Since it is not easy, takes time, and costs maintenance, it has been desired to reduce the maintenance cost. Furthermore, there has been a problem that the renewal or replacement work of the polishing cloth is restricted after the end of business.

  Recently, there is a tendency to lower the height of the lifting and polishing apparatus as a measure for improving the air permeability of the entire amusement hall and preventing crimes.

  In order to realize the reduction of the maintenance cost, it has been proposed to use an inexpensive non-woven fabric instead of the conventional long belt-like woven cloth polishing cloth. However, if a non-woven fabric is used in place of the woven fabric polishing cloth and a fixed roller is used as a roller for supporting the conveyor belt and the structure for pressing the guide rail with an elastic body is not changed, the conveyor belt is lifted by the conveyor belt. Since the force applied to the nonwoven fabric is maximized each time the sphere passes through the position corresponding to the fixed roller, the local portion corresponding to the fixed roller of the polishing cloth is deteriorated earlier than the other portions. A new problem has arisen that it tends to break, i.e., it has poor durability.

  Therefore, a main problem to be solved by the present invention is to provide a lift polishing apparatus that can improve the durability of an abrasive cloth when an inexpensive non-woven fabric is used for the abrasive cloth. An additional problem of the present invention is to provide a lift polishing apparatus that can easily replace the polishing cloth and reduce the maintenance cost.

In order to solve the above-mentioned main problems, the present invention provides a lift polishing apparatus for polishing a ball by lifting it with a conveyor belt and rubbing it against a polishing cloth fixed to a guide rail, and a bracket attached to the frame of the lift polishing apparatus. When having a holder which is swingably supported around a horizontal support shaft in the bracket, and a biasing member for biasing the upper portion of the holder always rising surface side of the conveyor belt, the said holder Roller mounting units that hold the tension roller rotatably above the support shaft are provided at a plurality of locations separated in the vertical direction of the conveyor belt on the opposite side of the polishing cloth on the rising surface of the conveyor belt , The tension roller is configured to elastically press the conveyance belt in the direction of the polishing pad .

  In a preferred example of the present invention, the bracket is provided with a stopper that regulates a swing range around the support shaft attached to the bracket of the tension roller when the tension roller is pushed by the lifted ball. It is characterized by.

  In a preferred embodiment, a plate-like sponge or the like is added to the surface of the guide rail opposite to the polishing cloth.

According to the present invention, since the pressing force of each tension roller is distributed to the conveyance belt, when the ball fed between the conveyance belt and the polishing cloth is conveyed at a position corresponding to the tension roller, The pressing force of the tension roller is prevented from being locally applied to the polishing cloth from the sphere. In other words, an equal pressing force is applied from the sphere to the polishing cloth at any position in the movement stroke of the sphere. Therefore, local early deterioration or breakage of the position corresponding to the tension roller of the polishing cloth is prevented, and durability is improved. Further, the sponge on the back of the guide rail is not necessary.

Moreover, the tension roller which acts elastically on the conveying belt in the polishing area can be easily attached to the lift polishing apparatus by simply attaching the roller mounting unit to the frame of the existing lift polishing apparatus.

Furthermore, since the tension roller is rotatably held by the holder above the support shaft, the tension roller can perform a swinging motion that does not oppose the flow of the sphere being conveyed. Thereby, the load on the movable part is also reduced, and durability is obtained.

When the bracket is provided with a stopper that regulates the swing range around the support shaft attached to the tension roller bracket when the tension roller is pushed by the ball to be lifted , the tension roller is lifted If the ball is pushed too far from a predetermined position, the ball may ride on the groove of the guide rail and bite, but the swinging range is restricted by the stopper, so that the ride is prevented.

When a plate-like sponge or the like is added to the surface of the guide rail opposite to the polishing cloth, the pressure applied to the polishing cloth from the tension roller via the conveyor belt and ball is dispersed and relaxed in the sponge. Deterioration and damage can be better prevented, and the life of the polishing cloth is extended.

It is a middle abbreviation perspective view of the state where the back door of the pumping polisher was opened. However, the drive motor, the transmission means, the conveyor belt, and the ball inflow portion are removed. It is a side view which extracts and shows the principal part of this invention of FIG. FIG. 3 is an enlarged view of a circle X portion in FIG. 2. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a perspective view which extracts and shows the roller attachment unit of FIG. FIG. 6 is a front view of the roller mounting unit of FIG. 5 . It is a front view which shows the attachment state with respect to the flame | frame of the roller attachment unit of FIG. It is sectional drawing of the principal part which shows the structure of a prior art.

Next, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, 1 is a lifting and polishing apparatus, 2 is a frame having a pair of left and right plate members. As shown in FIG. 2, the frame 2 has a driving pulley 3 at the bottom and a driven pulley 4 at the top. The conveyor belt 5 is wound between the pulleys, and the conveyor belt 5 is stretched by elastically pressing the descending portion 5d by the tension pulley 6. A motor (not shown) is fixed to a motor mount 7 (see FIG. 1) provided on the frame 2, and a transmission belt (not shown) is wound between the motor and the drive pulley 3.

  Of the pair of left and right plate members of the frame 2, a door 8 is attached to a rear end of one plate member by a hinge 9 so as to be freely opened and closed, and a hook 10 provided near the rear end of the other plate member is attached to the door 8. By engaging with the provided receiving member 11, the door 8 can be held in a closed state.

  As shown in FIG. 4, the guide rail 12 is fixed to the inner surface of the door 8 in a state where the vertically continuous groove 13 formed on one side faces the rising portion (5 u) of the conveyor belt 5. ing. A polishing cloth 14 is attached to the surface of the guide rail 12 to cover the surface and the groove.

Although this polishing cloth 14 is not limited, the nonwoven fabric which uses pulp and PET (polyethylene terephthalate) as a raw material is cut | disconnected in the strip | belt shape of width 160mm and length about 1.7m as an example. As such an abrasive cloth, for example, a non-woven fabric of 55% pulp and 45% PET can be used. Then, by operating the polishing cloth fixing means provided on the upper and lower inner surfaces of the door 8, for example, as shown in FIG. 3, between the cam 16 rotated by the handle lever 15 and a part of the door 8 or the guide rail 12. The upper and lower ends of the polishing pad 14 are sandwiched between the two, and the polishing pad 14 is fixed in a tensioned state.

  In a preferred embodiment of the present invention, the upper and lower ends of the polishing pad 14 are driven by a cam 16 that is rotated by operating the upper and lower handle levers 15 without using a step or a stepladder. Is sandwiched between the cam and the door, but since the length is 1.7 m or around, the polishing cloth can be easily attached and replaced in a short time. Therefore, there is an advantage that the polishing cloth can be replaced with a minimum downtime even during the business hours of the amusement hall.

In the present invention, a tension roller 17 composed of a movable roller that elastically presses the conveyance belt 5 in the direction of the guide rail is provided on the back surface of the rising portion 5u of the conveyance belt 5 instead of the conventional fixed roller. 5 is provided in a plurality spaced apart in the longitudinal direction. The tension roller 17, used as the addition of either equal pressing force to the conveying belt 5, and arranged at equal intervals, from any part of the conveyor belt 5, between the conveyor belt 5 and the polishing pad 14 It is desirable that an even frictional force acts on the ball to be lifted.

The structure for attaching the movable tension roller 17 that elastically presses the conveying belt 5 (5u) in the direction of the guide rail 12 as described above to the door is not particularly limited, but the preferred embodiment of the present invention shown in the drawing is preferred. 3, 5, and 6, a bracket 18 attached to the frame 2, and a holder that is rotatably supported at one end side by the support shaft 19 attached to the bracket 18 at the center of the support shaft 19. 20, a roller mounting unit 22 that is provided between the bracket 18 and the holder 20 and that constantly applies a rotational force in a certain direction to the holder 20, for example, a coil spring 21 or the like. A tension roller 17 is rotatably held on a shaft 23 supported by the roller.

  Then, as shown in FIG. 7, the roller mounting unit 22 is inserted between the left and right plates 2a, 2b of the frame 2, and screw holes provided on both sides of the bracket 18 are provided in the plates 2a, 2b of the frame. The roller mounting unit 22 is attached by fitting the screw 24 through the through hole from the outside of the plates 2 a and 2 b and screwing it into the screw hole of the bracket 18. The through-hole of the frame 2 utilizes what was used in order to screw a screw into the support shaft of the conventional fixed roller. Therefore, since the roller mounting unit 22 can be attached without performing new processing on the conventional apparatus, an increase in cost can be suppressed.

  In the illustrated preferred embodiment, the support shaft 19 of the holder 20 is attached to the bracket 18 below the support shaft 23 of the tension roller 17. As a result, the tension roller 17 can perform a swinging motion that does not oppose the flow of the sphere being conveyed, so the load on the movable portion is reduced and durability is obtained.

In the preferred embodiment, as shown in FIGS. 3, 5, and 6, the side of the holder 20 that supports the tension roller 17 extends slightly above the tension roller 17, and the upper end of the bracket 18 is A stopper 25 is provided at a position far from the ascending side portion 5u of the conveyor belt, and the swing range around the support shaft 19 of the tension roller 17 when the tension roller 17 is pushed by the lifted ball is regulated. ing.
If the stopper 25 is pushed by the ball to which the tension roller 17 is lifted and goes too far from the predetermined position to the position away from the guide rail 12, the ball may ride on the groove 13 of the guide rail 12 and bite. Since the swing range is restricted by the stopper 25, the ball P is prevented from climbing up from the groove of the guide rail 12, as shown in FIG.

A well-known product other than the coil spring 21 can be used as the urging member of the roller mounting unit 22. However, if the pressing force of the urging member can be set accurately or can be adjusted, it can be lifted from the conveyor belt 5. In order to equalize the force applied to the polishing pad 14 through the ball P to be fed and to optimize the polishing performance, it is sufficient to provide the roller mounting unit 22. However, as shown in FIG. 4, when the conventionally used sponge 26 is provided on the back surface of the guide rail 12, it is fed from the conveyor belt 5 even if the pressing force of the urging member is not strictly set. It is expected that the unevenness of the pressure applied to the polishing pad 14 via the sphere P is reduced or alleviated, and the effect of better preventing the unbalanced wear of the polishing pad 14 is expected.

  The present invention is not limited to being applicable to a new lift polishing apparatus, and can be easily applied to an existing lift polishing apparatus. In particular, the invention of claim 6 has a low height lift. In the polishing apparatus, it is possible to exhibit sufficient ball polishing performance using an inexpensive polishing cloth, and the durability of the polishing cloth is also improved.

DESCRIPTION OF SYMBOLS 1 Lifting polishing apparatus 2 Frame 3 Drive pulley 4 Driven pulley 5 Conveying belt 5u Ascending part 5d Decreasing part 8 Door 12 Guide rail 14 Polishing cloth 15, 16 Fixing means 17 Tension roller 18 Bracket 20 Holder 21 Energizing member (coil spring)
22 Roller mounting unit 25 Stopper P Game ball (Pachinko ball)

Claims (3)

In a game ball lifting and polishing apparatus that polishes by rubbing against a polishing cloth fixed to a guide rail while lifting a game ball with a conveyor belt,
A bracket attached to the frame of the game ball lifting and polishing apparatus, a holder supported by the bracket so as to be swingable about a horizontal support shaft, and an upper portion of the holder are always attached to the rising surface side of the conveyor belt . and a biasing member for energizing said roller mounting unit comprising holding the tension roller rotatably the upper side than the support shaft, a plurality of locations that are separated in the vertical direction of the conveyor belt in the holder provided on the opposite side to the polishing cloth of the rising surface of the conveyor belt,
The tension roller elastically presses the conveyor belt in the direction of the polishing cloth,
A game ball lifting and polishing apparatus characterized by 2. The lift polishing apparatus according to claim 1, wherein a swing range around the support shaft attached to the bracket of the tension roller when the tension roller is pushed by a lifted ball is regulated. Yu Technical sphere pumped polishing apparatus stops you, characterized in that provided in the bracket. In pumped polishing apparatus according to claim 1 or 2, characterized in that added to the plate-shaped sponge or the surface of the polishing cloth opposite side of the guide rail Yu Technical sphere pumped polishing apparatus.

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