JP4376239B2 - Dust collection nozzle and lift polishing machine - Google Patents

Description

The present invention relates to a dust collecting nozzle of a dust collector for sucking adhering abrasive particles scattered from abrasive particles for polishing a game medium , and a lift polishing device for lifting a game ball while polishing with abrasive particles. .

  An apparatus that polishes game media such as pachinko balls includes a type in which game media and abrasive grains are mixed and agitated so that dirt on the game media adheres to the abrasive grains and is removed.

  In this type of polishing equipment, after the game media and abrasive grains after polishing are separated through a slat-like passage, etc., the dirt and dust adhering to the abrasive grains are struck with rotating wings etc. Or is released from abrasive grains and scattered by impact when dropped into a snowboard-shaped passage. Then, only adhering matter is sucked through a mesh-like dust collecting nozzle that does not pass abrasive grains, and the abrasive grains remaining without being sucked are reused for polishing game media (for example, Patent Document 1, (See Patent Document 2).

JP-A-62-57573 No. 7-27969

  The mesh-shaped dust collection nozzle tends to clog the mesh when deposits accumulate. Once clogged, the suction force decreases, and the deposits that remain without being sucked up may contaminate the inner wall of the collection path or contaminate the abrasive grains. End up. In addition, clogging of the dust collecting nozzle places an excessive load on the suction motor of the dust collecting device, which accelerates deterioration of the motor or increases power consumption.

  Furthermore, foreign substances such as screws and screws may be mixed for some reason during the mixing of the game medium and the abrasive grains, and this foreign substance may pierce the dust collecting nozzle and break the mesh. Further, once the mesh is broken, the abrasive particles are sucked from the broken portion, and the dust collecting pack of the dust collecting device becomes full immediately.

The present invention is intended to solve the above-described problems, and an object of the present invention is to provide a dust collection nozzle that is less likely to be clogged or damaged by foreign matter , and a lifting and polishing apparatus including the dust collection nozzle . It is.

  The above object can be achieved by the inventions of the following items.

The invention according to claim 1 is provided in a collection tower having a cylindrical shape into which abrasive grains flow after polishing the game medium, and the abrasive grains scattered from the abrasive grains (8) for polishing the game medium ( 8) In the dust collecting nozzle (20, 30) of the dust collecting device (16) for sucking the adhering matter,
A suction portion which is formed by the deposit through but a coil spring in which the abrasive grains (8) is wound spirally to allow the degree of clearance does not enter (22, 32), the distal end of the coil spring A guide member for receiving slidably,
The coil spring is provided so as to protrude from one inner wall side of the recovery tower toward an inner wall facing the inner wall, and the guide member receives the tip of the coil spring on the facing inner wall side. A dust collection nozzle (20, 30) , wherein the coil spring is attached so as to vibrate upon contact with the abrasive grains .

According to the above invention, the deposits scattered from the abrasive grains (8) are sucked into the dust collection nozzles (20, 30) through the gaps of the coil springs (22, 32), and the abrasive grains (8) are collected. It falls without being sucked into the dust nozzle (20, 30). Further, the coil springs (22, 32) have a spiral shape, and vibrations due to contact with the abrasive grains (8) make it difficult for foreign objects such as screws and screws to pierce as compared to a mesh-like one. The durability of the dust nozzle (20, 30) is improved. Furthermore, even if deposits accumulate in the gap d between the coil springs (22, 32), the deposits are eventually wiped off by the vibration of the coil springs (22, 32) in contact with the abrasive grains (8). Thus, clogging of the gap d is prevented. The tip of the coil spring (22) is guided and vibrated by a guide member (25) provided on the inner wall of the recovery tower (14). The gap is not expanded by vibrating more than necessary, and it is possible to prevent the abrasive grains (8) from entering from the gap d which is excessively widened. Moreover, since the front-end | tip of a coil spring (22) is obstruct | occluded by the guide member (25), the penetration | invasion of the abrasive grain (8) from the front-end | tip of a coil spring (22) is prevented.

The invention according to claim 2 is the dust collection nozzle according to claim 1, wherein the coil spring (22) is wound so as to be tapered.

  According to the above invention, the coil spring (22) is wound so as to be tapered, so that the abrasive grains (8) can be prevented from entering from the tip of the coil spring (22) without providing the lid member (33). The Moreover, the amplitude of the vibration at the tip is likely to be large, the amplitude of the vibration of the entire coil spring (22) is large, the adhered matter is further wiped off, and the gap is difficult to close, and the dust collector (16). The suction power of can be maintained.

The invention according to claim 3 is a joining portion for joining the game medium and the abrasive grains;
A pumping unit that pumps the game medium and the abrasive grains merged at the merge unit while stirring;
A separation unit for separating the game medium and the abrasive grains that have been transported by the transport unit;
A cylindrical recovery tower into which the abrasive grains separated in the separation part are introduced from above,
A hitting portion provided in the recovery tower, for hitting abrasive grains and scattering deposits of the abrasive grains;
The dust collection nozzle according to claim 1 or 2, which is disposed downstream of the hitting portion in the recovery tower;
A dust collecting device for sucking the adhering matter through the dust collecting nozzle;
With
The abrasive grains recovered on the downstream side of the dust collection nozzle of the recovery tower are again guided to the junction.
This is a lift polishing apparatus characterized by that.

According to the dust collection nozzle and the lift polishing apparatus according to the present invention, the suction portion of the dust collection nozzle is spirally formed so that the adhering matter scattered from the abrasive grains is allowed to pass therethrough but there is a gap that does not allow the abrasive grains to enter. Since it is formed with a coiled coil spring and attached so that the coil spring vibrates when in contact with abrasive grains, foreign objects such as screws and screws are pierced and damaged compared to those in which the suction part is formed with a mesh. This improves the durability of the dust collection nozzle. Furthermore, even if deposits accumulate in the gaps of the coil springs, the deposits are wiped off by the vibration of the coil spring due to contact with the abrasive grains, preventing clogging of the gaps and maintaining the suction force of the dust collector. Is done.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of an installation state of a lifting and polishing apparatus 10 having a dust collection nozzle 20 according to an embodiment of the present invention on a gaming machine island 2. FIG. 2 shows a main part of the lifting and polishing apparatus 10. The internal structure is shown. The gaming machine island 2 houses a large number of gaming machines 3 back-to-back in a frame constructed on the floor of the gaming store, side by side. Hereinafter, in this example, the gaming machine 3 is described as a pachinko machine, and the gaming medium is described as a gaming ball (pachinko ball).

  The gaming machine island 2 collects the game balls used in the gaming machine 3 below the gaming machine 3 and transports them to the center of the gaming machine island 2, and the games collected and transported in the collecting path 4 A lifting and polishing apparatus 10 that lifts the ball while polishing the ball, an upper tank 5 that stores the game ball lifted by the lifting and polishing apparatus 10 in the upper part of the gaming machine 3, and the upper tank 5 to each gaming machine 3. A supply path 6 for supplying and supplying game balls is provided, and the game balls are circulated and reused inside the gaming machine island 2.

  The lift polishing apparatus 10 is configured to polish and lift the game sphere by mixing the game sphere and the abrasive grains and lifting them while stirring. The abrasive grains are resin grains that are about the size of rice grains. As long as the abrasive grains are sufficiently smaller than the game ball (game medium) and can remove the dirt of the game ball by stirring with the game ball, the material and shape thereof may be set appropriately.

  The lifting and polishing apparatus 10 agitate the game ball and abrasive particles that are merged and mixed in the merging unit 11, and the game ball and abrasive particles that are merged and mixed in the merge unit 11. While the lifting unit 12 is lifted, the separation unit 13 (see FIG. 2) that separates the game balls and the abrasive particles that are lifted by the lifting unit 12, and the abrasive particles separated by the separation unit 13 from above An inflowing recovery tower 14, a hitting portion 15 for hitting abrasive grains falling in the recovery tower 14 and scattering deposits of the abrasive grains, and a dust collecting nozzle 20 disposed below the hitting portion 15; (See FIG. 2), a dust collector 16 that sucks the deposits through the dust collection nozzle 20, a dust collection hose 17 that connects the dust collection nozzle 20 and the dust collection device 16, and a junction 11 from the lower part of the recovery tower 14. And an introduction passage 18 for introducing abrasive grains to the surface.

  The pumping unit 12 includes a cylindrical pumping pipe 12a extending in a substantially J-shape from the outlet of the merging unit 11 to above the upper tank 5, and a helical transport inserted into the pumping pipe 12a. It comprises a spring body 12b and a lifting motor 12c that rotates the conveying spring body 12b in the lifting pipe 12a. By rotating the conveying spring body 12b in a predetermined direction, the game ball and the abrasive particles are conveyed while being stirred from the junction portion 11 toward the upper tank 5, and during this time, the game ball is polished by the abrasive particles (see FIG. 2). Arrow P1). The transported game balls and abrasive grains flow out from the upper end of the lifting pipe 12a to the separation unit 13 (arrow P2 in FIG. 2).

  The separation unit 13 is configured by a down passage having a gap or a hole having a size that allows abrasive grains to pass but does not allow game balls to pass. Here, the separation portion 13 is configured as a slat-like separation rail having a number of elongated gaps along the longitudinal direction of the passage. However, the separation portion 13 may be configured in a mesh shape or the like. Any configuration may be used as long as it has a function of separating.

  The game balls separated from the abrasive grains are dropped and stored in the upper tank 5 (arrow P3 in FIG. 2). The abrasive particles fall downward from the gap of the separation unit 13 and flow into the upper portion of the recovery tower 14 and fall in the recovery tower 14 having a substantially rectangular cross section (arrow P4 in FIG. 2).

  The hitting portion 15 provided in the middle of the recovery tower 14 includes a rotating plate 15a that protrudes into the recovery tower 14 and a rotating plate driving portion 15b such as an electric motor that rotates the rotating plate 15a. The abrasive grains falling in the recovery tower 14 collide with the rotating plate 15a rotating at high speed and are hit. As a result, contaminants such as dirt and dust on the abrasive grains are detached from the abrasive grains and scattered.

  A dust collection nozzle 20 is disposed immediately below the hitting portion 15. The dust collection nozzle 20 is attached so as to protrude into the recovery tower 14 from a hole provided in the inner wall of the recovery tower 14. The dust collection nozzle 20 is formed of a coil spring 22 that is spirally wound so as to create a gap that allows the adhering matter scattered from the abrasive grains to pass but not the abrasive grains, and the coil spring 22 is polished. It is attached to vibrate by contact with the grains.

  The base end portion 21 of the dust collection nozzle 20 is connected to the dust collection hose 17, and the dust collection device 16 removes the deposits scattered from the abrasive grains by the hitting portion 15 together with the air in the recovery tower 14. And suction through the dust collecting hose 17. The sucked deposits and the like are stored in the dust storage section 16a of the dust collector 16.

  The abrasive grains that have fallen down the collection tower 14 without being sucked into the dust collection nozzle 20 are guided from the introduction passage 18 to the merging portion 11 where they are merged and mixed with the game balls and reused.

  3A is a front view of the dust collection nozzle 20, and FIG. 3B is a cross-sectional view taken along the line AA in FIG. The dust collection nozzle 20 includes a cylindrical base end portion 21 and a coil spring 22 that is attached to one end of the base end portion 21 and forms a suction portion. The coil spring 22 is formed by winding a wire in a spiral shape so as to taper from the attachment-side end 22a attached to the base end 21 toward the other end (tip 22b). The gap d between the wires wound spirally is set to a size that allows the adhering matter scattered from the abrasive grains to pass through but prevents the abrasive grains from passing therethrough. Further, when the wire is wound in a spiral shape so as to be tapered, the vibration amplitude at the tip tends to be large, and the vibration amplitude of the entire coil spring (22) becomes large.

  The coil spring 22 is fixed only on the attachment side end 22a, and the tip 22b side is attached in a freely vibrable state, and the entire coil spring 22 vibrates appropriately as a result of collision with abrasive grains falling from above. It is like that. The tip 22b of the coil spring 22 is closed by bending the wire so that abrasive grains do not enter.

  Next, the operation of the dust collection nozzle 20 will be described.

  FIG. 4 shows how the coil spring 22 of the dust collecting nozzle 20 vibrates due to the collision with the falling abrasive grains 8. The abrasive grains 8 drop downward as indicated by an arrow B in the figure, and deposits (not shown) that are hit by the hitting portion 15 and scattered are floating around the abrasive grains 8. The deposits scattered from the abrasive grains 8 enter the dust collecting nozzle 20 through the gaps d of the coil springs 22 and are sucked by the dust collecting device 16. The abrasive grains 8 come into contact with the dust collection nozzle 20 but fall without being sucked into the interior. Due to this contact, the coil spring 22 vibrates (particularly, vibrates up and down as shown by the arrow V in the figure), and deposits are difficult to deposit in the gap d of the coil spring 22, and even when deposited, the vibration is caused by vibration. Eventually, it is wiped off, and clogging of the gap d is prevented.

  Further, since the coil spring 22 of the dust collection nozzle 20 has a spiral shape and vibrates as described above, foreign matters such as screws and screws are less likely to be pierced than the mesh nozzle, and the dust collection nozzle 20 Durability is improved. In addition, although the clearance gap between the coil springs 22 is somewhat widened by vibration, the winding method and rigidity of the coil springs are set so as not to spread to the extent that abrasive grains enter.

  FIG. 5A shows a configuration example of a dust collection nozzle 20 a in which the tip 22 b of the coil spring 22 is held by the guide member 25. The coil spring 22 of the dust collection nozzle 20a is inserted from a tip into a hole provided in one inner wall 14a of the recovery tower 14, and is attached so as to protrude toward the opposed inner wall 14b. A guide member 25 is provided on the opposing inner wall 14b. FIG. 5B shows a state in which the guide member 25 is viewed from the direction of arrow C in FIG. As shown in FIG. 5B, the guide member 25 is a vertically long ring-shaped member in which the tip of the coil spring 22 is fitted inside, and when the base end portion 21 of the dust collection nozzle 20 a is fixed to the recovery tower 14. The tip 22a of the coil spring 22 is adapted to fit inside the guide member 25.

  When the abrasive grains collide, the tip 22 a of the coil spring 22 vibrates up and down inside the guide member 25. Since the vibrating range is limited to the inside of the guide member 25, the coil spring 22 does not vibrate more than necessary and the gap d does not spread too much. As a result, the abrasive grains are prevented from entering the inside of the coil spring 22 and being sucked from the excessively wide gap d. In addition, since the tip of the coil spring 22 is blocked by the guide member 25, the entry of abrasive grains from the tip of the coil spring 22 is prevented. Further, when the free length of the coil spring 22 is lengthened and compressed to press the tip against the inner wall of the recovery tower 14, vibrations before and after the coil spring 22 can be suppressed.

  FIG. 6 shows a dust collection nozzle 30 having another shape.

  6A is a partial cross-sectional view passing through the central axis of the dust collection nozzle 30, and FIG. 6B is a cross-sectional view taken along the line DD in FIG. 6A. The dust collection nozzle 30 includes a base end portion 31 to which the dust collection hose 17 is connected, a substantially cylindrical coil spring 32 in which a wire is spirally wound, a lid member 33 provided at the tip of the coil spring 32, and a tip. The coil spring 32 and the holding portion 34 for attaching the lid member 33 to the base end portion 31 in a state where the lid member 33 is closed.

  The holding part 34 is provided with a support column 34a erected along the longitudinal direction of the coil spring 32 on the end surface 31a of the base end part 31 with the central axis of the cylindrical base end part 31, and the coil spring 32 is fitted into the support pillar 34a. The distal end side of the coil spring 32 opposite to the proximal end portion 31 side is closed with a lid member 33, and the lid member 33 is screwed in a state where the coil spring 32 is held between the end surface 31 a of the proximal end portion 31 and the lid member 33. It fixes to the front-end | tip of the support | pillar 34a with 34b.

  As shown in FIG. 6B, the end surface 31a of the base end portion 31 is provided with a hole e, and air and adhering matter are sucked to the dust collecting hose 17 side through the hole e. Since the coil spring 32 is lightly held between the end surface 31a and the lid member 33, the coil spring 32 is appropriately vibrated by collision of abrasive grains. Further, the gap d between the adjacent wires of the coil spring 32 is set to a size that allows the adhering material to pass but does not allow the abrasive grains to pass, like the dust collection nozzle 20 shown in FIG.

  Deposits scattered from the abrasive grains enter the coil spring 32 through the gap d of the coil spring 32 and are sucked into the dust collector 16 through the hole e of the end surface 31a. The abrasive particles come into contact with the coil spring 32, but fall further without being sucked into the coil spring 32. In addition, the penetration of abrasive grains from the tip of the coil spring 32 is blocked by the lid member 33.

  Since the coil spring 32 vibrates due to the collision of abrasive grains, it is difficult for deposits to accumulate in the gaps between the coil springs 32, and even if they accumulate, they will eventually be wiped off by vibrations to prevent clogging of the gaps d. . Further, similarly to the dust collection nozzle 20 of FIG. 3, foreign matter such as screws and screws are hardly pierced, and the durability of the dust collection nozzle 30 is improved. In addition, the gap d of the coil spring 32 is widened and narrowed by vibration, but the winding and rigidity of the coil spring 32 and the compression by the lid member 33 and the end surface 31a are prevented so as not to spread to the extent that abrasive grains enter. Etc. are set.

  The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to that shown in the embodiment, and there are changes and additions within the scope of the present invention. Are also included in the present invention.

  For example, the coil springs 22 and 32 of the dust collection nozzles 20 and 30 are configured to have a gap that allows the deposits scattered from the game medium to pass but not to pass abrasive grains, and to vibrate when the abrasive grains contact. The winding method and shape illustrated in the embodiment are not limited to the above.

  In the embodiment, a game ball has been described as an example of a game medium. However, an object to be polished with abrasive grains is not limited to this, and a medal used in a slot machine may be used.

An example of a state in which the pumped polishing apparatus example Bei dust collecting nozzle according to the embodiment installed into the gaming machine islands present invention; FIG. It is explanatory drawing which shows the internal structure of the principal part of a lifting polishing apparatus. It is the front view which shows an example of the dust collection nozzle concerning this invention, and AA arrow sectional drawing. It is explanatory drawing which shows a mode that the coil spring of a dust collection nozzle vibrates by collision with an abrasive grain. It is explanatory drawing which shows the attachment state of the dust collection nozzle which was hold | maintained so that the front-end | tip of a coil spring could be vibrated with a guide member. It is the fragmentary sectional view and DD arrow sectional drawing which show another example of the dust collection nozzle concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Game machine island 3 ... Game machine 4 ... Collection | recovery path 5 ... Upper tank 6 ... Replenishment path 8 ... Abrasive grain 10 ... Lifting polishing apparatus 11 ... Merge part 12 ... Lifting part 12a ... Lifting pipe 12b ... Conveying spring body 12c ... Lifting motor 13 ... Separating part 14 ... Recovery tower 15 ... Striking part 15a ... Rotating plate 15b ... Rotating plate driving part 16 ... Dust collector 16a ... Dust storage part 17 ... Dust collecting hose 18 ... Introduction passage 20 ... Dust collecting Nozzle 21 ... Base end 22 ... Coil spring 22a ... Coil spring attachment side end 22b ... The other end (tip) of the coil spring attachment side end
25 ... Guide member 30 ... Dust collecting nozzle 31 ... Base end part 31a ... End face 32 ... Coil spring 33 ... Cover member 34 ... Holding part 34a ... Post 34b ... Screw

Claims (3)

In a dust collecting nozzle of a dust collecting device that is provided in a cylindrical collection tower into which abrasive grains flow after polishing the game medium and sucks adhering abrasive particles scattered from the abrasive grains,
A suction portion which is formed by the deposit coil spring wound to spirally allow the gap is of a degree that the abrasive does not enter through the guide for receiving the distal end of the coil spring slidably And having a member
The coil spring is provided so as to protrude from one inner wall side of the recovery tower toward an inner wall facing the inner wall, and the guide member receives the tip of the coil spring on the facing inner wall side. The dust collecting nozzle is provided so that the coil spring is vibrated by contact with the abrasive grains . The dust collecting nozzle according to claim 1, wherein the coil spring is wound so as to be tapered. A merging section for joining the game medium and the abrasive grains;
  A pumping unit that pumps the game medium and the abrasive grains merged at the merge unit while stirring;
  A separation unit for separating the game medium and the abrasive grains that have been transported by the transport unit;
  A cylindrical recovery tower into which the abrasive grains separated in the separation part are introduced from above,
  A hitting portion provided in the recovery tower, for hitting abrasive grains and scattering deposits of the abrasive grains;
  The dust collection nozzle according to claim 1 or 2, which is disposed downstream of the hitting portion in the recovery tower;
  A dust collecting device for sucking the adhering matter through the dust collecting nozzle;
  With
  The abrasive grains recovered on the downstream side of the dust collection nozzle of the recovery tower are again guided to the junction.
  A lift polishing apparatus characterized by that.

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