JP5422197B2 - Game ball polishing equipment - Google Patents

Description

  The present invention relates to a game ball polishing apparatus that is installed on a pachinko machine installation island formed by arranging pachinko machines and polishes while transporting game balls circulating in the pachinko machine installation island.

  Conventionally, in a pachinko machine installation island where pachinko machines are arranged in a row, game balls circulating inside the dirt are soiled by dirt, dust, or player's hand dirt, so a game is used to polish the surface. A game ball polishing device is incorporated in the circulation path of the ball. An example of the game ball polishing apparatus is disclosed in Patent Document 1. In other words, the game ball polishing apparatus also has a lifting function, and includes a pressing plate that is vertically arranged with a plurality of parallel ball guide grooves arranged vertically on the ball receiving surface, and the ball receiving surface. A driving shaft and a driven shaft that are orthogonal to each other in the same plane as the spherical guide grooves provided on both end portions (upper and lower end portions) of the frame that are arranged vertically and arranged on the ball receiving surfaces of the pressing plate. And a driving pulley and a driven pulley attached to the driving shaft and the driven shaft, and an endless transport belt wound between the driving pulley and the driven pulley.

  The conveying surface of the conveying belt and the ball receiving surface of the pressing plate are arranged opposite to each other and parallel to each other, and the interval is set shorter than the diameter dimension of the game ball. When the transport belt is rotating in the transport direction (upward) at a constant speed, the game balls supplied from the lower ends to the respective ball guide grooves on the ball receiving surface of the pressing plate are transported by the transport belt. The sheet is conveyed upward along each ball guide groove while being strongly sandwiched between the surface and the ball receiving surface of the pressing plate, and discharged from the upper end portion. During this time, the outer peripheral surface of the game ball rising in each ball guide groove is polished and polished by the polishing member (see, for example, Patent Document 1).

JP-A-10-192540 (page 4-5, FIG. 1, FIG. 2, FIG. 3)

  In the game ball polishing apparatus disclosed in Patent Document 1, the position of the conveyor belt with respect to the pressing plate, that is, the conveyance in the direction orthogonal to the ball guiding groove arranged on the ball receiving surface of the pressing plate in the same plane. The position with the belt is determined and fixed in advance. For this reason, on the transport surface of the transport belt, the game balls rolling in the respective ball guide grooves are always pressed against the same position, in other words, the transport surface is always pressed along the same ball guide groove. The wear position on the conveyance surface of the conveyance belt always becomes the same position, and wear occurs only at those positions. Therefore, it is difficult to extend the life of the conveyor belt quickly, and there is a strong feeling that replacement with a new one is frequent and uneconomical. Moreover, there is a problem that it is not preferable from the aspect of protecting the global environment to reduce garbage when it is disposed of.

  Accordingly, the present invention has been made to solve the above-described problems, and is capable of changing the position of the conveyor belt with respect to the pressing plate along a direction orthogonal to the ball guide groove of the pressing plate in the same plane. It is an object of the present invention to provide a game ball polishing apparatus that can extend the life of the ball and is economical and preferable from the viewpoint of protecting the global environment.

  In order to achieve such an object, the game ball polishing apparatus according to the present invention includes an endless conveying belt wound between pulleys attached to a pair of parallel support shafts, and a plurality of ball guide grooves. And a pressing plate disposed parallel to the conveying surface of the conveying belt and having a ball receiving surface on which an abrasive member is laid, and the conveying belt is moved into the spherical guide groove by a driving means. A game ball polishing apparatus that is rotated while being polished while being transported by sandwiching a game ball supplied to each of the ball guide grooves with the transport surface of the transport belt, wherein the transport belt is A predetermined dimension is provided along the central axis direction of the support shaft, and when the transport belt is moved in that direction, the pressure contact position of the game ball in each of the ball guide grooves on the transport surface of the transport belt is also described above. If the load is shifted along the central axis of the spindle Characterized in that the odd.

  Specifically, the game ball polishing apparatus according to the present invention includes, for example, a pair of parallel support shafts arranged at both ends of a conveyor frame, a pulley attached to each of the pair of support shafts, and a space between the two pulleys. And an endless transport belt wound around, a ball receiving surface on which a plurality of ball guide grooves are arranged and on which an abrasive member is laid, and the ball receiving surface is opposed to and parallel to the transport surface of the transport belt And a pressing plate that is arranged, and the driving belt is rotated along the ball guide grooves by driving means, and the game balls supplied to the ball guide grooves are sandwiched between the conveying surfaces of the conveyor belts. A game ball polishing apparatus configured to polish while being conveyed, wherein the conveyor belt together with the conveyor frame is provided so as to be movable by a predetermined dimension along a central axis direction of the support shaft, and both ends of the support shaft are connected to the end portions of the support shaft. Outside from the conveyor frame An annular recess that protrudes outward from the conveyor frame on its outer peripheral surface, and a collar member that regulates the movement of the conveyor frame is detachably fitted to each annular recess, When the conveyor belt is moved together with the conveyor frame toward the one end along the direction of the central axis of the support shaft, the collar member and the inner surface of the annular recess facing the collar member are located near the other end. When the conveyor belt is moved toward the other end together with the conveyor frame, the pressure contact position of the game ball in each of the ball guide grooves on the conveyor surface of the conveyor belt is also It is characterized in that it does not overlap and overlap along the central axis direction of the support shaft.

  The game ball polishing apparatus according to the present invention polishes the game ball supplied to each ball guide groove while sandwiching and transporting the game ball between the transport surfaces of the transport belt, and the transport belt is in the direction of the central axis of the support shaft Are provided so as to be movable along predetermined dimensions. Therefore, as a result of using the game ball polishing device for a certain period of time, when the wear of the ball guide grooves on the transfer surface of the transfer belt becomes severe due to the game balls, the transfer belt is moved along the central axis direction of the support shaft. Move dimensions. As a result, the position at which the game ball that rolls in each ball guide groove presses does not deviate from the previous position along the central axis direction of the support shaft, and the transport belt can be used again. Therefore, there is an effect that the life of the conveyor belt can be extended, which is economical, and is preferable from the viewpoint of protecting the global environment.

  Embodiments of a game ball polishing apparatus according to the present invention will be described below in detail with reference to the drawings. The game ball polishing apparatus according to the present invention is a concept that includes both one that mainly polishes game balls and one that simultaneously lifts and lifts game balls. First, the pachinko machine installation island 100 to which the present invention is applied will be described with reference to FIG.

  The pachinko machine installation island 100 has a plurality of pachinko machines P arranged side by side on both sides along the longitudinal direction, and the pachinko balls that are game balls include the pachinko machine P and the pachinko machine installation island 100. Circulate inside. Therefore, the game ball polishing device T according to the present invention and the ball lifting device 101 adjacent to the game ball polishing device T are disposed at the center lower portion in the longitudinal direction of the pachinko machine installation island 100. Therefore, the pachinko balls discharged from the game ball polishing device T are supplied to the ball lifting device 101. In the ball lifting device 101, a lifting tube 102 for vertically lifting a pachinko ball is erected vertically. The pumping tube 102 is connected to a ball tank 103 disposed above it. On both sides of the ball tank 103, supply rods 104, 104 extending downward toward both ends in the longitudinal direction of the pachinko machine installation island 100 are extended. A plurality of replenishment pipes 105 are extended downward from both supply rods 104 and 104 so as to correspond to the respective pachinko machines P, and pachinko balls are supplied to each pachinko machine P via the supply rods 104 and the respective supply pipes 105. The

  In addition, ball collecting baskets 106 and 106 that are inclined downward toward the game ball polishing device T are disposed in the lower portion of the pachinko machine installation island 100 along the longitudinal direction, and discharged from each pachinko machine P through the discharge pipe 107. The pachinko balls thus collected are collected by the ball collecting baskets 106 and 106 and supplied to the game ball polishing apparatus T. Then, the pachinko balls polished by the game ball polishing device T are supplied again to the ball lifting device 101, and are transferred to the ball tank 103 via the lifting tube 102, and are supplied via the supply rod 104 and the supply pipe 105. Are supplied to each pachinko machine P. In this way, pachinko balls circulate in the pachinko machine installation island 100.

  Next, the game ball polishing apparatus T according to the present invention will be described. 1 is a perspective view of a game ball polishing apparatus according to the present invention, FIG. 2 is an exploded perspective view of the main part, FIG. 3 is a front view thereof, FIG. 4 is a left side view thereof, and FIG. In the game ball polishing apparatus T, a vertical support plate 2 is erected on the upper surface of one side of the horizontal substrate 1, and a belt transport mechanism B that transports the pachinko ball to the front side of the support plate 2 and the dirt on the pachinko ball are wiped and polished. The polishing mechanism K is arranged substantially vertically. The lower end of the ball collecting basket 106 is positioned on the supply side of the pachinko balls in the belt transport mechanism B, and the ball lifting device 101 that lifts the pachinko balls discharged from the belt transport mechanism B is positioned on the discharge side. To do.

  First, the belt conveyance mechanism B will be described. The belt conveyance mechanism B is mainly composed of a conveyor frame 3 disposed in an inclined manner along the front surface of the support plate 2. The conveyor frame 3 has two long plate-like frame plates 4 and 4 which are arranged in parallel at the front and back with an appropriate interval therebetween. And the drive shaft 5 as a spindle is arrange | positioned at the one end part (lower end part) of the longitudinal direction of both the frame boards 4 and 4, and the driven shaft 6 as a spindle is arrange | positioned at the other end part (upper end part). . The drive shaft 5 and the driven shaft 6 are arranged in parallel. A drive pulley 7 as a pulley is fixed to the drive shaft 5, and a driven pulley 8 as a pulley is rotatably inserted into the driven shaft 6. Of these, the drive shaft 5 is installed between the frame plates 4 and 4 via bearings (not shown), and both ends along the central axis direction of the drive shaft 5 are outward from the frame plates 4 and 4. It protrudes and one end protrudes to the rear side through a through hole 9 formed in the support plate 2. Also in this case, a bearing (not shown) is used. As shown in FIG. 7, one end of the protruding drive shaft 5 is directly connected to a motor shaft 10 a of a reversible motor 10 with a reduction gear as drive means installed on the rear side of the support plate 2. The driven shaft 6 is installed between the frame plates 4 and 4, and both ends of the driven shaft 6 along the central axis protrude from the frame plates 4 and 4 to the outside. An endless transport belt 11 is wound between the drive pulley 7 and the driven pulley 8.

  A rotatable free pulley 12 is installed on top of both frame plates 4 and 4. A tension pulley 13 is disposed between the driven shaft 6 and the free pulley 12 so as to press and contact the conveyor belt 11 from the outside. The tension pulley 13 has a self-aligning roller as a position adjusting means, and a required tension is applied to the transport belt 11 by applying a tension with the free pulley 12. A plurality of guide rollers 14, 14... Are installed at appropriate intervals along the lower edges of the frame plates 4, 4. The guide rollers 14, 14. Will be. The lower end portions of both frame plates 4, 4 are formed in an arc shape with the lower end edges having substantially the same radius as the outer peripheral surface of the drive pulley 7.

  A ball discharge rod 17 is arranged above the upper end portion of the conveyor frame 3 so as to cover the upper end portion. The ball discharge rod 17 has a hook shape in which the driven pulley 8 side and the opposite side of the conveyor frame 3 are opened, and a horizontal shaft 18 is installed on the base end portion of the ball discharge rod 17, that is, on the opposite side of the driven pulley 8. . One end of the horizontal shaft 18 along the central axis is fixed to the support plate 2 so that the ball discharge rod 17 can be rotated up and down around the horizontal shaft 18. Further, a holding frame 19 is integrally projected at the tip of the ball discharge rod 17, and the tension pulley 13 is attached to the holding frame 19. The tension pulley 13 is formed in a U-shape with a roller 13a (self-aligning roller) as a position adjusting means formed in a cylindrical shape so that the central portion has a large diameter and the both ends gradually become smaller in diameter. The suspension frame 20 is moved forward and backward through a suspension frame 20 that rotatably supports the roller 13a, and two support shafts 21 that are fixed to the holding frame 19 and project from the upper plate portion of the suspension frame 20. And a support member 22 that is freely supported. Each support shaft 21 is provided with a coil spring 23 as an elastic member, whereby the suspension frame 20 is urged in one direction and the roller 13a pushes the conveyor belt 11 from the outside. At this time, due to the difference in the diameter of the cylindrical outer peripheral surface of the roller 13a, the tension applied to the vicinity of the center of the conveyor belt 11 becomes stronger than the tension applied to both ends of the conveyor belt 11. As a result, an automatic alignment function that adjusts the position in the width direction when the conveyor belt 11 is running works.

  On the upper surface of the holding frame 19 to which the tension pulley 13 is attached, a plate 24 having a portal section is disposed. The plate 24 is positioned almost directly above the driven pulley 8 and is pivotally attached to the holding frame 19 by a shaft rod 24a positioned farther and above the driven shaft 6 with the horizontal shaft 18 as a base point. Further, on both lower edges of the plate 24, engagement pieces 25, 25 that overlap the frame plates 4, 4 on the outside are provided so as to face downward. Each of the engagement pieces 25, 25 is positioned so as to approach the driven shaft 6 from the side of the horizontal shaft 18, and its lower end is slightly bent toward the driven shaft 6 side. Therefore, the engaging pieces 25, 25 are engaged with the outer peripheral surfaces of both ends of the driven shaft 6 with the downward rotation of the plate 24. Further, the driven shaft 6 is adapted to be fitted into recesses 26 and 26 provided at the lower edges of both sides of the ball discharge rod 17 when the ball discharge rod 17 rotates downward about the horizontal shaft 18. .

  In a state in which no tension is applied by the tension pulley 13, the plate 24 rotates freely about the shaft rod 24 a, and both engagement pieces 25, 25 are engaged with both ends of the driven shaft 6 so as to be freely disengaged. To do. However, when the tension by the tension pulley 10 is applied, both the engagement pieces 25, 25 engaged with the driven shaft 6 are not removed. In a state where both the engagement pieces 25, 25 are disengaged from the driven shaft 6, the ball discharge rod 17 rotates upward about the horizontal shaft 18 as shown in FIG. The drive shaft 5 can be rotated in a standing direction. This is because the maintenance of the belt conveyance mechanism B can be easily performed. Therefore, when the drive pulley 7 rotates by driving the reversible motor 10 with a speed reducer, the driven pulley 8 also rotates in conjunction with it, and the conveyor belt 11 rotates. As a result, the transport surface 11a of the transport belt 11 travels upward with the substrate 1 surface facing obliquely upward by about 30 degrees.

  Next, the polishing mechanism K will be described. As shown in FIG. 6, the polishing mechanism K includes a pressing plate 27 in which linear spherical guide grooves 16a having a semicircular arc section are arranged in parallel on the upper surface, that is, the ball receiving surface 27a. And a polishing cloth 28 as a polishing member laid on the ball receiving surface 27a of the pressing plate 27. The ball receiving surface 27a of the pressing plate 27 is positioned opposite to the conveying surface 11a of the conveying belt 11, and is parallel and is set shorter than the diameter dimension of the pachinko ball. The plurality of ball guide grooves 16a on the ball receiving surface 27a are provided in parallel along the conveyance direction of the conveyor belt 11, and the central axis of the drive shaft 5 and the driven shaft 6 is in the same plane as the ball guide groove 16a. Will be orthogonal.

  The pressing plate 27 is disposed on the lower side thereof and is held by a fixed frame 29 having substantially the same size as the pressing plate 27. Brackets 29a are respectively provided at both upper and lower corners of the lower surface of the fixed frame 29, and guide shafts 30 are respectively installed between the brackets 29a and 29a in the upper and lower portions. A guide pulley 31 is rotatably attached to the guide shaft 30. Has been. One end portions of the guide shafts 30 are fixed to the support plate 2. Although not shown, the pressing plate 27 is movable with respect to the fixed frame 29 and is urged by an elastic means such as a compression spring so that the ball receiving surface 27a always approaches the conveying surface 11a of the conveying belt 11. .

  A ball introduction rod 15 that guides the pachinko balls collected by the ball collecting rod 106 toward the pressing plate 27 is disposed on the lower surface of the pressing plate 27 and on the upper surface of the substrate 1. As shown in FIG. 5, the ball introduction rod 15 is formed in a substantially concentric shape with its upper surface separated from the outer circumferential surface of the drive pulley 7 by a certain distance, and as shown in FIG. Seven (7) ball guide grooves 16b are recessed in parallel. The plurality of ball guide grooves 16 b are continuous with the plurality of ball guide grooves 16 a provided on the ball receiving surface 27 a of the pressing plate 27, and are positioned in the same straight line, and are orthogonal to the central axis direction of the drive shaft 5. ing. Further, the interval between the outer peripheral surface of the conveyor belt 11 and the upper surface of the ball introduction rod 15 is set to be shorter than the diameter of the pachinko ball, so that the pachinko balls supplied to the respective ball guide grooves 16b of the ball introduction rod 15 are Then, it is conveyed while being sandwiched between the outer peripheral surface of the conveyor belt 11. The upper end of each ball guide groove 16a on the ball receiving surface 27a of the pressing plate 27 is continuous with the end of the bottom plate 17a of the ball discharge rod 17 as shown in FIG.

  A roll shaft 32 and a take-up shaft 33 are arranged below the fixed frame 29 and on the front surface of the support plate 2 so as to be adjacent to each other in the vertical direction. The roll shaft 32 is rotatably attached to the support plate 2, and one end of the take-up shaft 33 projects rearward through a through hole (not shown) provided in the support plate 2 and is arranged on the rear side. It is connected to a winding drive motor 34. The abrasive cloth roll 35 is hung on the roll shaft 32, and the abrasive cloth 28 drawn out from the abrasive cloth roll 35 is axially attached to the upper part of the free roll 36 a and the fixed frame 29 that are axially attached to the front surface of the support plate 2. It is guided from its upper end to a ball receiving surface 27 a which is the upper surface of the pressing plate 27 through the guide pulley 31. The polishing cloth 28 drawn out from the lower end of the ball receiving surface 27 a is attached to the take-up shaft 33 via a guide pulley 31 that is pivotally attached to the lower portion of the fixed frame 29 and a free roll 36 b that is pivotally attached to the front surface of the support plate 2. It is wound up. Therefore, on the ball receiving surface 27 a of the pressing plate 27, the polishing pad 28 moves in the direction opposite to the conveying direction of the conveying belt 11. However, the polishing cloth 28 is moved by driving the drive motor 34 when the part on the ball receiving surface 27a becomes dirty.

  While the reversible motor 10 with a reduction gear is driven and the conveyor belt 11 is rotating, the pachinko balls collected by the ball collecting rod 106 on the ball introducing rod 15 flow down the ball guiding grooves 16b and It is pulled down and further conveyed upward while being sandwiched between the conveying surface 11a of the conveying belt 11 in each spherical guide groove 16a of the pressing plate 27. Then, the ball is discharged from the upper end to the ball discharge rod 17 and further discharged from the ball discharge rod 17 to the ball lifting device 101. During this time, the pachinko balls conveyed through the respective ball guide grooves 16a of the ball receiving surface 27a of the pressing plate 27 roll while being rubbed against the polishing cloth 28 in each of the ball guide grooves 16a due to the conveyance surface 11a of the conveyance belt 11 being pressed against each other. Move. In this way, the pachinko sphere is polished.

  In the present invention, as shown in FIG. 2, annular recesses 37 and 37 whose outer peripheral surfaces are cut and thinned are provided at both ends of the drive shaft 5 arranged at the lower end of the conveyor frame 3 in the belt transport mechanism B. . Each annular recess 37 protrudes outward from each frame plate 4 at one end side along the direction of the central axis of the drive shaft 5. Then, collar members 38 for restricting movement along the central axis direction of the drive shaft 5 of the conveyor frame 3 are detachably fitted into the annular recesses 37 protruding outward from the respective frame plates 4. The collar member 38 has a predetermined thickness and an outer diameter larger than the outer diameter of the drive shaft 5 and is formed in a donut shape that fits into the annular recess 37, and is further divided into two equal parts by a plane including the central axis. Also, bolt insertion holes 39, 39 that penetrate each other and are perpendicular to the central axis in a plane that is perpendicular to the central axis of the collar member 38 are penetrated at both ends connected to each other. Therefore, the collar member 38 divided as shown in FIG. 7 is fitted into the annular recess 37, the bolt 40 as the fixing means is inserted into the opposing bolt insertion holes 39, 39, and the nut 41 is screwed into the bolt 40. As a result, the collar member 38 is detachably fitted to the drive shaft 5, that is, the annular recess 37.

  Then, with the collar member 38 loosely fitted in both annular recesses 37, 37, the conveyor frame 3 having the conveyor belt 11 is moved along the central axis direction of the drive shaft 5 as shown in FIG. When it is moved closer to one end (from the support plate 2), a gap S having a predetermined dimension L1 is formed between the collar member 38 and the inner side surface 37a of the annular recess 37 facing the collar member 38 in the annular recess 37 near the other end. Is formed. The predetermined dimension L1 of the gap S is set to a half of the dimension L2 between the central axis lines of the adjacent ball guide grooves 16a and 16a on the ball receiving surface 27a of the pressing plate 27. That is, the conveyor frame 3 is centered in the ball guide grooves 16a, 16a adjacent to each other along the direction perpendicular to the plurality of ball guide grooves 16a, 16a,. The dimension can be moved by half the dimension L2 between the axes.

  Therefore, before operating the game ball polishing apparatus T in advance, the collar members 38, 38 are loosely fitted in the annular recesses 37, 37 at both ends of the drive shaft 5 as shown in FIG. The conveyor frame 3 is moved toward one end (close to the support plate 2) along the direction of the central axis of the drive shaft 5, and after moving, the bolts 40 of both the color members 38, 38 are strongly tightened so that both the color members 38, 38 are Do not move without permission. Thus, when the game ball polishing apparatus T is operated, the pachinko balls supplied to the belt conveyance mechanism B are conveyed along the ball guide grooves 16a arranged on the ball receiving surface 27a of the pressing plate 27 while being polished. A plurality of wear strips are formed on the outer peripheral surface of the conveyor belt 11 by a ball pressure of a pachinko ball corresponding to each of the ball guide grooves 16a during a certain period.

  Therefore, when the plurality of wear strips become deeper and become unacceptable, the game ball polishing apparatus T is stopped to loosen both the collar members 38, 38, and the conveyor frame 3 as shown by arrows in FIG. Is moved toward the other end (opposite to the support plate 2) along the direction of the central axis of the drive shaft 5 on the contrary, and the collar members 38, 38 are fastened again. As a result, a gap S having a predetermined dimension L1 is formed between the collar member 38 and the inner side surface 37b of the annular recess 37 facing the collar member 38 in the annular recess 37 near one end (closer to the support plate 2). . Thus, by moving the conveyor frame 3 along the direction of the central axis of the drive shaft 5, the position of the pachinko ball in the ball guide groove 16a so far on the transport surface 11a of the transport belt 11 is also the drive shaft. 5, which is displaced along the direction of the central axis of the center of the ball, and is located approximately in the middle between the central axes of the adjacent spherical guide grooves 16 a and 16 a. Therefore, when the game ball polishing apparatus T is operated in this state, the wear strips formed by the pachinko balls conveyed in the respective ball guide grooves 16a are shifted to the intermediate positions between the previously formed wear strips and are used again. As a result, it is not necessary to replace the conveyor belt 11 with a new one as soon as it is once worn by the pachinko balls.

  As described above, the game ball polishing apparatus T according to the present invention polishes the pachinko balls supplied to the respective ball guide grooves 16a while being sandwiched between the transport surface 11a of the transport belt 11 and transported. The conveyor belt 11 is provided so as to be movable by a predetermined dimension L1 along the central axis direction of the drive shaft 5. Therefore, as a result of using the game ball polishing apparatus T for a certain period, when the wear of the ball guide grooves 16a on the transport surface 11a of the transport belt 11 by the pachinko balls becomes severe, the transport belt 11 is moved to the center of the drive shaft 5. A predetermined dimension L1 is moved along the axial direction. As a result, the position of the pachinko ball that rolls on each ball guide groove 16a on the conveying surface 11a of the conveying belt 11 does not overlap with the previous position, and the conveying belt 11 can be used again. . Therefore, the life of the conveyor belt 11 can be extended.

  The conveyor frame 3, that is, the conveyor belt 11 can be moved by a predetermined dimension along the direction of the center axis of the drive shaft 5. The predetermined dimension L 1 is a ball guide groove adjacent to the ball receiving surface 27 a of the pressing plate 27. The dimension L2 between the central axes of 16a and 16a may not be the same. Therefore, if several kinds of collar members 38 having different thicknesses are prepared, and the predetermined dimension L1 is made half of the dimension L2 between the central axes of the adjacent ball guide grooves 16a, 16a, one extra is required as described above. The conveyor belt 11 can be used. If the predetermined dimension L1 is set to one third of the dimension L2 between the central axes of the adjacent ball guide grooves 16a and 16a, the conveyor belt 11 can be used twice more.

  In the present invention, the collar member 38 is detachably fitted to each annular recess 37 at both ends of the drive shaft 5 and outside the frame plates 4, 4. In this case, annular recesses 37 and 37 may be provided on both sides of the drive pulley 7, and a collar member 38 may be detachably fitted to each of the annular recesses 37 to move the transport belt 11 together with the drive pulley 7. In this case, the driven pulley 8 can be moved in the same dimensions as the driving pulley 7. Further, the conveyor frame 3 can be moved along the direction of the central axis of the drive shaft 5, but one end portion of the driven shaft 6 is fixed to the support plate 2, and both ends of the driven shaft 6 are annularly formed as described above. The recesses 37 may be provided.

The perspective view of the game ball polish device concerning the present invention. The exploded perspective view of the principal part. The front view. The left side view. FIG. XX sectional drawing of FIG. FIG. 6 is a cross-sectional view taken along line YY in FIG. 5. (A) is a top view of the principal part of a normal conveyor frame, (b) is a top view of the principal part of the conveyor frame which shows an effect | action. The front sectional view of the pachinko machine installation island to which the present invention is applied.

Explanation of symbols

3 Conveyor frame 5 Support shaft (drive shaft)
6 Support shaft (driven shaft)
7 Pulley (drive pulley)
8 Pulley (driven pulley)
10 Drive means (reversible motor with reduction gear)
DESCRIPTION OF SYMBOLS 11 Conveying belt 11a Conveying surface 16a Sphere guide groove 16b Sphere guide groove 27 Press plate 27a Sphere receiving surface 28 Polishing member (polishing cloth)
37 annular recess 38 collar member L1 size S gap T game ball polishing device

Claims (1)

A pair of parallel spindles arranged at both ends of the conveyor frame;
Pulleys respectively attached to the pair of spindles;
An endless conveyor belt wound between the pulleys;
A plurality of ball guide grooves arranged in a row and having a ball receiving surface on which an abrasive member is laid, and the ball receiving surface is disposed opposite to and parallel to the conveying surface of the conveying belt;
A game in which the conveyor belt is rotated along the ball guide grooves by the driving means, and the game balls supplied to the respective ball guide grooves are sandwiched between the conveyor surfaces of the conveyor belt and polished while being conveyed. A ball polishing apparatus,
Wherein the conveyor belt with the conveyor frame is movable predetermined dimension along the central axis direction of the support shaft, the ring-shaped recess and circumferentially on the outer peripheral surface of said support shaft, said conveyor frame wherein the respective annular recess The collar member that regulates the movement of the
When the conveyor belt is moved together with the conveyor frame toward the one end along the direction of the central axis of the support shaft, the collar member is located in the annular recess near the other end, and the collar member and the annular recess facing the collar member. A gap of a predetermined dimension is formed between the side surface, and when the conveyor belt is moved toward the other end together with the conveyor frame, the pressure contact position of the game ball in each of the ball guide grooves on the conveyor surface of the conveyor belt is also A game ball polishing apparatus characterized by not shifting and overlapping along a central axis direction of the support shaft.

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