JP2002058858A - Ball polishing/lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ball polishing/lifting device generating no noise when it is driven and facilitating the fitting work of a conveying belt. SOLUTION: Since a tension roller mechanism 7 is provided with a second tension roller 9 applying tension to the conveying belt 5 and a tension roller pressing device 60 capable of pinching the second tension roller 9 in an indirectly pressed state to a lifting tube main body 3 side, the fitting work of tension rollers 8 and 10 can be easily conducted without using a dedicated tool after the conveying belt 5 is replaced. The tension rollers 8 and 10 can be easily removed when the conveying belt is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting cylinder main body provided with a tension roller mechanism at a lower portion, a transport belt circulating around the lifting cylinder main body, and a polishing member provided facing the transport belt. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball polishing / lifting device that lifts a pachinko ball while holding it.

[0002]

2. Description of the Related Art Conventionally, a ball polishing / lifting device for feeding pachinko balls has a tension roller mechanism 7 as shown in FIG.
A conveyor belt (skin belt) 5 to which tension is imparted by the conveyor belt 5 circulates around the elevating cylinder main body 3 and lifts the pachinko balls while sandwiching the pachinko balls between the polishing cloth on the front surface of the guide rail 15 and the conveyor belt 5. . Such a ball polishing / lifting device 1
When the pachinko balls are polished, the conveyor belt 5 is in direct contact with and rubs with the pachinko balls, so that the conveyor belt 5 is easily contaminated.
When the vehicle goes around, it goes around at a high speed, so that it is extremely worn. For this reason, the transport belt 5 needs to be periodically replaced with a new one. After replacing the transport belt 5 with a new one, as shown in FIG.
The first tension roller 8 and the third tension roller 10
Is turned in the direction of the arrow and closed while sandwiching the transport belt 5 and attached to the base member 30 by the mounting bolts 39 and 49, respectively.
Is pressed outward by the second tension roller 9 urged by the spring 43. For this reason,
When closing the first tension roller 8 and the third tension roller 10, the first tension roller 8 and the third tension roller 10 must be closed against the pressing force to the outside of the second tension roller 9. Is very strong and cannot be done manually by the operator.
Mounting was performed by applying a force to the tension roller 8 and the third tension roller 10, and the workability was extremely poor.

[0003] Therefore, a method of facilitating the work of mounting the first tension roller 8 and the third tension roller 10 by directly pressing the second tension roller 9 in a direction to ease the tension of the transport belt. Can be considered.
For example, a thread is provided on a spindle shaft that supports the second tension roller, and is directly pressed by a washer and a nut, thereby relaxing the tension of the transport belt, and mounting the first tension roller 8 and the third tension roller 10. This is a way to make work easier.

[0004]

However, according to the above-described method, when the ball polishing / lifting device is driven, noise caused by friction is generated between the second tension roller and the thread provided on the support shaft supporting the second tension roller. There was a problem that occurred. Further, there is a problem that the thread is worn away due to the friction and cannot be smoothly pressed by the nut. Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to generate no noise even when driving a ball polishing / lifting device, and to easily carry out a work of mounting a transport belt. It is an object of the present invention to provide a ball polishing apparatus capable of polishing.

[0005]

To achieve the above object, according to the first aspect of the present invention, a lifting cylinder main body provided with a tension roller mechanism at a lower portion, and a transport belt circling the lifting cylinder main body are provided. And, in a ball polishing and lifting device for lifting while pinching pachinko balls with a polishing member provided facing the transport belt, the tension roller mechanism,
A tension roller for applying tension to the transport belt,
A tension roller holding device that can hold the tension roller in a state where the tension roller is indirectly pressed in a direction to relieve the tension of the transport belt. With this configuration, the tension of the transport belt can be reduced by the tension roller pressing device without using a dedicated tool, and the work of mounting the transport belt can be easily performed.
Further, since the pressing is performed indirectly, the noise that occurs when the pressing is performed directly does not occur.

Further, in the invention according to claim 2, the tension roller pressing device comprises: a holding member for pressing a tension roller for applying tension to the transport belt;
A supporting member for supporting the holding member, wherein the holding member is formed with a sliding portion and a screw insertion hole for inserting a holding screw, while the supporting member includes the sliding member. A guide portion on which a moving portion slides and a screwing portion into which the holding screw is screwed are formed, and the sliding portion is slidably fitted into the guide portion, and the sliding portion is inserted through the screw insertion hole. The holding member is supported by the holding member at least at two points of the sliding portion and the holding screw by screwing and holding the holding screw to the screw portion. is there. With this configuration, it is possible to reduce the vertical and longitudinal vibrations of the holding member with respect to the support member, so that the position of the holding member with respect to the tension roller is accurately determined. Pressing can be performed while maintaining the parallelism. Therefore, no excessive force is applied to the tension roller pressing device or the tension roller.

According to a third aspect of the present invention, the holding member is detachably attached to the support member. With this configuration, the tension roller can be removed by removing the holding member, so that maintenance such as cleaning and replacement can be performed.

In the invention of claim 4, the holding member has a support shaft insertion hole through which a support shaft for supporting the tension roller is inserted,
The screw insertion hole through which the pinching screw is inserted is formed between the support shaft insertion hole and the sliding portion. With such a configuration, the distance between the screw insertion hole and the support shaft insertion hole can be shortened, so that the deformation of the holding member can be reduced. For this reason, it is possible to press the holding member while keeping the tension roller parallel, and no excessive force is applied to the tension roller pressing device or the tension roller.

Further, in the invention of claim 5, the tension roller pressing device is provided on both sides of the tension roller. With this configuration, when the tension roller is nipped in a pressed state, the tension roller is nipped in a state in which both sides of the tension roller are pressed, so that an excessive force is applied to the tension roller pressing device and the tension roller. Nothing.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, the overall configuration of a ball polishing and frying apparatus constituting a main part of the present embodiment will be described with reference to FIG. FIG. 1 shows a conventional ball polishing and lifting apparatus 1
1 is a perspective view of the ball polishing and lifting device 1 according to the present embodiment, which is obtained by adding the structure of the tension roller pressing mechanism 60 to the conventional ball polishing and lifting device 1. The description of the ball polishing apparatus 1 according to the present embodiment will be made with reference to FIG. 1 since the ball polishing apparatus 1 of the related art can be cited except for a portion that is a main part of the present invention.

Referring to FIG. 1, a ball polishing / lifting apparatus 1 has a lifting cylinder supporting member 22 formed of the same material as that of the supporting table 2 welded and fixed to an upper portion of a supporting table 2 formed of a thick steel plate. The lifting cylinder main body 3 is vertically erected on the lifting cylinder support member 22. Then, a leather conveyor belt 5 wrapped between a lower roller 4 located at a lower part of the lifting cylinder main body 3 and an upper roller (not shown) located at an upper part circulates around the periphery of the lifting cylinder main body 3. It is supposed to. This lifting cylinder body 3
Has a rectangular cross-section with one side open,
Since a lifting tube cover 6 for closing the opening surface is attached to this opening surface, mounting screws (not shown) for mounting the lifting tube cover 6 are provided on both sides of the opening surface. . A mounting hole (not shown) is also formed in the lifting cylinder cover 6, and a mounting screw is inserted into the mounting hole and screwed into the mounting screw hole, whereby the lifting cylinder cover 3 is moved. Attached to the opening surface. The lifting cylinder cover 6 is attached to the base member 3 described below from the upper end of the lifting cylinder main body 3.
0, which closes the opening surface of the lifting cylinder main body 3 over the upper end of the cylinder. The cleaning, repair and replacement of intermediate rollers and upper rollers (not shown) located at the upper and central portions inside the lifting cylinder main body 3 or In the event of a trouble inside the lifting tube main body 3, the lifting tube cover 6 can be removed for repair, replacement work or troubleshooting.

The conveyor belt 5 is driven around the periphery of the main body 3 by rotation of a lower roller 4 having a built-in motor. In order to apply tension to the transport belt 5, a tension roller mechanism 7 including a first tension roller 8, a second tension roller 9, and a third tension roller 10, which the transport belt 5 abuts alternately, includes a lifting cylinder body 3. Is attached via a base member 30 to the lower part of the base member. The tension roller mechanism 7 will be described later in detail. An introduction gutter 11 is provided below the lower roller 4 for aligning the incoming pachinko balls in a plurality of rows, and a discharge gutter portion above the lifting / discharging tube main body 3 for discharging the ball-polished pachinko balls. The upper bent gutter 12 formed integrally with the upper part 13 is connected.

The pachinko balls that have flowed in from the introduction gutter 11 are lifted by the conveyor belt 5 from the lower roller 4 to the upper roller, and then discharged from the discharge gutter 13. In the process, the dirt adhering to the pachinko balls is wiped off by a frictional force with a cloth belt (not shown) provided around the guide rail 15 described later, and the cleaned pachinko balls are discharged from the discharge gutter portion 13. The Rukoto. The introduction gutter 11 is provided with an inclination adjustment bolt 14 for adjusting the inclination of the introduction gutter 11.
A spring is provided around the tilt angle adjusting bolt 14 so that the pachinko balls are smoothly aligned even when an excessive force is applied to the introduction gutter 11 by the pachinko balls flowing inside. .

On the other hand, a guide rail 15 is openably and closably mounted on a rear surface side of the lifting cylinder main body 3 via a support hinge (not shown) attached to one side surface of the lifting cylinder main body 3. The support hinge is provided at several places in the vertical direction of the lifting cylinder main body 3. A stopper 16 is attached to the other side surface of the lifting cylinder main body 3 via a stopper 17, and the stopper 1 is attached to the guide rail 15 at a position corresponding to the stopper 16.
An engagement protrusion 18 for locking the lock 6 is provided.

A cloth belt fixing and locking member 19 for locking one end of the cloth belt and a tension locking member 20 for pulling and locking the other end of the cloth belt are attached to the rear surface of the guide rail 15. A cloth belt roller 21 for folding and guiding the cloth belt is provided at the upper end thereof. Thus, the cloth belt locked by the cloth belt fixing and locking member 19 passes through the inside of the guide rail 15 from the lower end of the guide rail 15 and is stretched over the cloth belt roller 21, and is pulled and locked by the tension locking member 20. Is done.

As described above, the guide rail 15
Is attached to the lifting cylinder main body 3 so as to be openable and closable, so that the transfer belt 5 and the cloth belt can be mounted on the ball polishing / lifting device 1 by rotating the guide rail 15 about the fulcrum of the supporting hinge. It can be done by opening it. By attaching the transport belt 5 and the cloth belt in this manner, and locking the lifting cylinder main body 3 and the guide rail 15 with the stopper 16 with the guide rail 15 closed,
The conveyor belt 5 and the cloth belt are maintained in a state of facing each other.
The guide rail 15 is closed in this way, and the stopper 16
In the locked state, a gap is formed between the lifting cylinder main body 3 and the guide rail 15, and this gap is adjusted by adjusting the fixing position of the locking bracket 17. The dimensions can be set, and the pressure on the pachinko balls to be pumped can be changed according to the set values.

Thus, the guide rail 15 is closed with the transport belt 5 and the cloth belt attached in this manner, and the stopper 16 is engaged with the engaging projection 18 to thereby guide the guide rail 15.
The pachinko ball is lifted while the dirt is being wiped off by the cloth belt by rotating the transport belt 5 after attaching it to the lifting cylinder main body 3.

At the end of business hours, the cloth belt on the rear side is pulled by pulling the cloth belt on the upper rear surface to loosen the cloth belt fixing / locking member 19 so that the cloth belt can be moved. Then, the cloth belt fixing and locking member 19 and the tension locking member 20 are sequentially operated to lock the cloth belt, whereby the preparation for polishing on the next day is completed. In addition, the work of winding the cloth belt can be performed in a state where the guide rail 15 is opened from the lifting cylinder main body 3 or in a state where the guide rail 15 is closed. However, when replacing the cloth belt with a new cloth belt, It is necessary to perform the operation in a state where the guide rail 15 is opened from the lifting cylinder main body 3.

Next, the tension roller mechanism 7 will be described with reference to FIG. FIG. 2 is a perspective view showing a state in which the first tension roller 8 and the third tension roller 10 of the conventional tension roller mechanism 7 are opened, but the tension roller mechanism 7 according to the present embodiment is a conventional tension roller mechanism. The structure of the tension roller pressing mechanism 60 is added to the mechanism 7, and therefore, the description of the tension roller mechanism 7 according to the present embodiment will be omitted except for a part which is a main part of the present invention. 7 can be cited, so that reference is made to FIG.

In FIG. 2, the tension roller mechanism 7
Is attached above the lower roller 4 to a lower portion of the front surface of the lifting cylinder main body 3 by a bolt (not shown), and applies tension to the transport belt 5 that circulates around the lifting cylinder main body 3. The tension roller mechanism 7 includes a tension roller mechanism 7.
A base member 30, a first tension roller 8 mounted on the upper end of the base member 30, a second tension roller 9 mounted substantially at the center of the base member 30 in the vertical direction, and mounted on a lower end of the base member 30. And a third tension roller 10.
The transport belt 5 is given tension by alternately contacting the tension rollers 8, 9 and 10. Hereinafter, each component constituting the tension roller mechanism 7 will be described.

First, the base member 30 is formed of a steel plate. A first tension roller support member 34 is provided on one side of the upper end, and a first tension roller fixing member 35 is provided on the other side of the upper end. Are provided respectively. In addition, on both sides of the center of the base member 30 in the vertical direction,
A second tension roller support member 40 is provided;
A support shaft 42 is attached to the second tension roller support member 40 by a fixing nut 41.
A third tension roller support member 45 is provided on one side of the lower end of the base member 30, and a third tension roller fixing member 46 is provided on the other side of the lower end.

The first tension roller 8 is rotatably attached to the first tension roller shaft 31. The first tension roller 8 is provided so that the transport belt 5 stretched over the lifting cylinder main body 3 does not shift in the left-right direction. Is adjusted. One end of the first tension roller shaft 31 is rotatably supported by the first tension roller support member 34 by a support bolt 36. Also,
At the other end of the first tension roller shaft 31, a mounting hole 3 is provided.
7 are provided, and mounting bolts 39 are provided in the mounting holes 37.
And the first tension roller 8 is mounted on the base member 30 by screwing into a mounting screw hole of an adjustment block (not shown) provided in the first tension roller fixing member 35. The position of the adjustment block changes vertically by adjusting the tightening of the adjustment bolt 38 attached to the upper surface of the first tension roller fixing member 35, and the position of the adjustment block changes according to the change of the vertical position of the adjustment block. The angle of attachment of the tension roller 8 is adjusted.

The second tension roller 9 is rotatably mounted on the second tension roller shaft 32 and applies tension to the conveyor belt 5. At both ends of the second tension roller shaft 32, mounting holes 44 are respectively formed. After the support shaft 42 is inserted through the mounting hole 44, a support shaft insertion hole 66 of a holding member 61 (see FIG. 4) described later is inserted into the support shaft 42, and the holding member 61 is inserted into a supporting member 62 (see FIG. 4). 4), the second tension roller 9 is mounted on the base member 30.
At this time, since the spring 43 inserted into the support shaft 42 is located between the second tension roller shaft 32 and the second tension roller support member 40, the second tension roller 9 is attached outward. It is mounted on the base member 30 in a biased state.

Further, the third tension roller 10
It is rotatably attached to the tension roller shaft 33 and presses the transport belt 5 against the lower roller 4. One end of the third tension roller shaft 33 is connected to the third tension roller support member 4.
5 is rotatably supported by a support bolt 47. A mounting hole 48 is formed in the other end of the third tension roller shaft 33, and a mounting bolt 49 is inserted into the mounting hole 48 so as to be inserted into a mounting screw hole (not shown) of the third tension roller fixing member 46. By screwing,
The third tension roller 10 is mounted on the base member 30.

Next, the tension roller pressing device 60 will be described with reference to FIGS. FIG. 3 is a perspective view of the tension roller mechanism 7 to which the tension roller pressing device 60 according to the embodiment is attached, FIG. 4 is a perspective view of the tension roller pressing device 60 in an exploded state, and FIG. FIG. 6 is a top view showing a state before the tension roller pressing device 60 presses and fixes the second tension roller 9 and a state after the second tension roller 9 is pressed and fixed. FIG. 6 shows a state before the second tension roller 9 is pressed and fixed. , Is a schematic view from the side showing a state after being fixed.

In FIG. 3, tension roller pressing devices 60 are provided on both sides of a substantially central portion in the vertical direction of the tension roller mechanism 7, and a support member 62 directly connected to the tension roller mechanism 7 and the support member 62 And a holding member 61 detachably attached to the holding member 62. Hereinafter, the holding member 61 and the support member 62 will be described.

First, in FIG. 4, the support member 62 is formed by joining a fixing portion 69, a guide portion 67, and a screw portion 71 in a U-shape. An end surface of the fixing portion 69 is joined to the second tension roller support member 40 by welding or the like, and a pinching screw 74 is provided substantially at the center thereof.
A screw escape hole 70 through which is inserted. The guide 67 is bent in a U-shape on both sides to form a guide projection 68 into which the sliding portion 64 of the holding member is fitted. The screw portion 71 has a nut 72 buried from substantially the center rear side.

The holding member 61 includes a roller pressing portion 63.
And the sliding portion 64 are joined in an L-shape. On the sliding portion 64 side of the roller pressing portion 63,
A screw insertion hole 65 through which the holding screw 74 is inserted is formed, and a support shaft insertion hole 66 through which the support shaft 42 is inserted is formed on the other side.

The tension roller pressing device 60
First, the sliding portion 64 of the holding member 61 is inserted into the guide protrusion 68 of the support member 62. Then, after the holding screw 74 is inserted through the screw insertion hole 65 of the holding member 61 via the washer 73, the screw is screwed into the nut of the support member 62, as shown in FIG.
Is mounted on the support member 62, and the tension roller pressing device 60 is assembled. At this time, the support shaft 42 is inserted into the support shaft insertion hole 66 formed in the holding member 61.

The following describes how to mount the transport belt 5 on the ball polishing / lifting device 1 on which the tension roller mechanism 7 having the tension roller pressing device 60 assembled as described above is mounted. First, the conveyor belt 5 is wrapped around the lower roller 4 and the upper roller so as to go around the lifting cylinder main body 3. After the transport belt 5 is stretched between the rollers, the clamping screws 74 of the tension roller pressing device 60 mounted on both sides of the tension roller mechanism 7 are tightened by a tool such as a screwdriver. At this time, the holding screw 74
Since is a commercially available screw, there is no need to manufacture a dedicated tool or the like, and work can be performed using a commercially available tool. In addition, since a commercially available electric tool or the like can be used, the operation can be performed quickly.

When the holding screw 74 is tightened, the holding member 61 is gradually moved toward the lifting cylinder main body 3 as shown by a two-dot chain line in FIG. 32 is pressed by the roller pressing portion 63 of the holding member 61. At this time, since the screw escape hole 70 is formed in the fixing portion 69 as described above, the tip of the holding screw 74 is inserted into the screw escape hole 70, and the fixing portion 69 and the holding screw 74 interfere. There is no.

Then, as shown in FIG. 6, the second tension roller 9 is fixed at a position where the spring 43 is fully contracted. In this state, the first tension roller 8, which has been opened, is closed while holding the transport belt 5, and the mounting bolt 39 inserted through the mounting hole 37 is screwed into the mounting screw hole of the adjustment block. The first tension roller 8 is mounted on the base member 30 (see FIG. 2). At this time, since the second tension roller 9 is fixed at the position where the spring 43 is fully compressed as described above, no tension is applied to the transport belt 5, and the second tension roller 9 resists the tension of the transport belt 5. There is no need to close the first tension roller 8. Therefore, the first tension roller 8 can be easily formed without using a dedicated tool.
Can be mounted on the base member 30 by the mounting bolt 39.

Subsequently, the third tension roller 10 which has been in the open state is closed while holding the conveyor belt 5, and the mounting bolt 49 inserted through the mounting hole 48 is attached to the mounting screw hole of the third tension roller fixing member 46. The third tension roller 10 is mounted on the base member 30 by screwing (see FIG. 2). At this time, similarly to the above, since no tension is applied to the transport belt 5, there is no need to close the third tension roller 10 against the tension of the transport belt 5. Therefore, the third tension roller 10 can be easily mounted on the base member 30 by the mounting bolt 49 without using a dedicated tool.

As described above, the tension roller mechanism 7
The first tension roller 8 and the third tension roller 10
Is attached to the base member 30, and the holding screw 74 is gradually loosened. At this time, as shown by a solid line in FIG. 5, the holding screw 61 is loosened to a position where the holding member 61 separates from the second tension roller shaft 32 and does not come off the support shaft 42 and the holding member 62. By loosening the holding screw 74, the second tension roller 9 gradually moves toward the outside of the lifting cylinder body 3 by the urging force of the spring 43,
As shown by the broken line in FIG. 6, the tension is applied to the transport belt 5. In this way, the conveyor belt 5 is mounted on the ball polishing / lifting device 1.

As described above, the operation of the tension roller pressing device 60 when the transport belt 5 is mounted on the ball polishing / lifting device 1,
Although the effect has been described, not only when the conveyor belt 5 is mounted, but also when the conveyor belt 5
By using the tension roller mechanism 60 also when removing the device, the operation can be facilitated.
That is, when the transport belt 5 is removed from the ball polishing / lifting device 1, the first tension roller 8, the third tension roller 1
By pressing and fixing the second tension roller 9 by the tension roller device 60 in the same procedure as described above before setting the first tension roller 8 to the open state, the first tension roller 8 can be easily used without using a dedicated tool. The third tension roller 10 can be removed from the base member 30 and can be opened. After opening the first tension roller 8 and the third tension roller 10 as described above, the transport belt 5 is removed.

The tension roller holding device 60 of the ball polishing and lifting device 1 has been described above in detail. In the above embodiment (hereinafter, referred to as the first embodiment), the tension roller holding device 60 is formed on the guide portion 67 of the support member 62. Although the guide projection 68 is formed to have the same length as the guide 67, the guide projection 68 may be formed to be longer than the guide 67. Such an embodiment (hereinafter, referred to as a second embodiment) will be described with reference to FIG. FIG.
Is a tension roller pressing device 60 according to the second embodiment.
It is a perspective view of the state which disassembled. Note that components having the same functions as those in the first embodiment are denoted by the same reference numerals.

In FIG. 7, the guide portion 6 of the support member 62
7 The guide protrusion 68 formed in a U-shape on both sides is formed to be longer than the length of the guide portion 67, and when the holding member 61 moves toward the outside of the lifting tube main body 3,
After the support shaft insertion hole 66 is detached from the support shaft 42, the sliding portion 64 has such a length as to be detached from the guide projection 68. The width of the roller pressing portion 63 is smaller than the width of the sliding portion 64 so that the roller pressing portion 63 does not interfere with the guide protrusion 68 when the holding member 61 moves toward the lifting cylinder main body 3. Is also formed small.

In the second embodiment, since the guide projection 68 into which the sliding portion 64 of the holding member 61 is fitted is formed long, the holding member 61 slides to move the second tension roller 9. When moving, the deflection of the holding member 61 in the front-rear direction can be further reduced over the entire range in which the holding member 61 slides, so that the roller pressing portion 63 of the holding member 61 is attached to the second tension roller shaft 32. On the other hand, the second tension roller 9 can be pressed while being kept parallel, so that no excessive force is applied to the tension roller pressing device 60 or the second tension roller shaft 32.

Although the tension roller holding device 60 of the ball polishing / lifting device 1 according to a plurality of embodiments has been described in detail above, in the present embodiment, the lifting cylinder main body provided with the tension roller mechanism 7 at the lower portion. 3, a conveyor belt 5 that circulates around the lifting cylinder main body 3, and a polishing member provided to face the conveyor belt 5, and a ball polishing / lifting device 1 that lifts the pachinko balls while nipping the pachinko balls. The roller mechanism 7 can clamp the second tension roller 9 that applies tension to the transport belt 5 and in a state where the second tension roller 9 is indirectly pressed in a direction to reduce the tension of the transport belt 5. And a tension roller pressing device 60 described above. With this configuration, the tension of the transport belt 5 can be reduced by the tension roller pressing device 60 without using a dedicated tool, and the work of mounting the transport belt 5 can be easily performed. . Further, since the pressing is performed indirectly, no noise is generated as when the pressing is performed directly. In the present embodiment, the tension roller pressing device 60 is configured to press the second tension roller 9. And a support member 62 for supporting the holding member 61. The holding member 61 is formed with a screw insertion hole 65 for inserting a sliding portion 64 and a holding screw 74. On the other hand, the support member 62 has a guide portion 67 on which the sliding portion 64 slides.
And a screwing portion 71 into which the holding screw 74 is screwed. The sliding portion 64 is slidably fitted in the guide portion 67 and the holding screw 74 inserted through the screw insertion hole 65 is formed. Is screwed into the screwing portion 71 and tightened, whereby the holding member 61 is supported by the support member 62 at least at two points of the sliding portion 64 and the holding screw 74. Is what you do. With this configuration, it is possible to reduce the vertical and longitudinal vibrations of the holding member 61 with respect to the support member 62.
The position of 1 is accurately determined, and the holding member 61 can press the second tension roller 9 while keeping it parallel. For this reason, the tension roller holding device 60 or the second
No excessive force is applied to the tension roller 9.

In this embodiment, the holding member 61 is detachably mounted on the support member 62. With this configuration, the spring 43 and the second tension roller 9 can be removed by removing the holding member 61, so that maintenance such as cleaning and replacement can be performed.

In this embodiment, the holding member 61 is provided in the support shaft insertion hole 6 through which the support shaft 42 for supporting the second tension roller 9 is inserted.
6 is formed, and the screw insertion hole 65 through which the pinching screw 74 is inserted is formed between the support shaft insertion hole 66 and the sliding portion 64. With this configuration, the distance between the screw insertion hole 65 and the support shaft insertion hole 66 can be shortened, so that the deformation of the holding member 61 can be reduced. For this reason, the holding member 61 is connected to the second tension roller 9.
Can be pressed while maintaining the parallelism, and no excessive force is applied to the tension roller pressing device 60 or the second tension roller 9.

Further, in this embodiment, the tension roller pressing device 60 is provided on both sides of the second tension roller 9. With this configuration, when the second tension roller 9 is nipped while being pressed, the second tension roller 9
Is held in a state where both sides are pressed, the tension roller pressing device 60 and the second tension roller 9
No excessive force is applied.

In the above embodiment, the number of the tension rollers is three. However, the number is not limited to three, and one or more tension rollers for applying tension to the transport belt 5 may be used.

In the above-described embodiment, the fixing portion 69 of the support member 62 is provided with the second tension roller support member 4.
In FIG. 0, the parts joined by welding or the like are shown.
9 and the second tension roller supporting member 40 may be integrally formed.

In the above-described embodiment, the holding screw 74 is illustrated as a countersunk screw in the figure, but is not limited to a countersunk screw and may be a commercially available screw such as a hexagonal bolt.

In the above-described embodiment, the movement of the holding member 61 is performed by tightening the holding screw 74 screwed to the screw portion 71 of the mounting member 62. However, the tightening of the holding screw 74 is performed. It is not necessary to move the sandwiching member 61 by using. For example, the holding member 61
Is formed in a saw-tooth shape, and the support member 62 is provided with a reverse- sawtooth-shaped member that meshes with the saw-tooth. The saw-toothed member provided on the support member 62 is configured to slide back and forth on the support member 62 by a lever or the like, and the clamping member 61 presses the second tension roller 9 stepwise by operation of the lever or the like. It may be like a ratcheting structure. In this case, by releasing the engagement of the sawtooth between the holding member 61 and the support member 62, the second tension roller 9 moves toward the outside of the lifting cylinder main body 3 by the spring 43.

Further, in the above-described embodiment, the tension roller pressing device 60 indirectly presses the second tension roller 9 in a direction for relaxing the tension applied to the conveyor belt 5. By applying the pressing device 60 to the first tension roller 8 or the third tension roller 10, it can be applied to a device for applying tension to the transport belt 5 on the contrary. In this case, since the second tension roller 9 can be fixed, a mechanism for pressing the second tension roller 9 toward the outside of the lifting cylinder main body becomes unnecessary, and the number of parts can be reduced. it can.

[0048]

As is apparent from the above description, according to the first aspect of the present invention, there is provided a lifting cylinder main body provided with a tension roller mechanism at a lower portion, and a transport belt circling the lifting cylinder main body. In a ball polishing / lifting device that lifts a pachinko ball while sandwiching the ball with a polishing member provided to face the transport belt, the tension roller mechanism includes: a tension roller that applies tension to the transport belt; and the tension roller. And a tension roller pressing device that can hold the roller in a state where the roller is indirectly pressed in a direction in which the tension of the transport belt is reduced. With this configuration, the tension of the transport belt can be reduced by the tension roller pressing device without using a dedicated tool, and the work of mounting the transport belt can be easily performed. Also,
Since the pressing is performed indirectly, no noise occurs when the pressing is performed directly.In the invention of claim 2, the tension roller pressing device includes a tension roller that applies tension to the transport belt. A holding member for pressing, and a support member for supporting the holding member, the holding member is formed with a screw insertion hole for inserting a sliding portion and a holding screw, The support member is formed with a guide portion on which the sliding portion slides and a screw portion with which the pinching screw is screwed, and the sliding portion is slidably fitted into the guide portion, The holding member is supported at least at two points of the sliding portion and the holding screw with respect to the support member by screwing the holding screw inserted into the screw insertion hole into the screw portion and tightening the screw. Characterized by It is intended. With this configuration, it is possible to reduce the vertical and longitudinal vibrations of the holding member with respect to the support member, so that the position of the holding member with respect to the tension roller is accurately determined, and
The holding member can press while keeping the tension roller parallel. Therefore, no excessive force is applied to the tension roller pressing device or the tension roller.

Further, in the invention of claim 3, the holding member is detachably mounted on the support member. With this configuration, the tension roller can be removed by removing the holding member, so that maintenance such as cleaning and replacement can be performed.

Further, in the invention of claim 4, the holding member has a support shaft insertion hole through which a support shaft for supporting the tension roller is inserted,
The screw insertion hole through which the pinching screw is inserted is formed between the support shaft insertion hole and the sliding portion. With such a configuration, the distance between the screw insertion hole and the support shaft insertion hole can be shortened, so that the deformation of the holding member can be reduced. For this reason, it is possible to press the holding member while keeping the tension roller parallel, and no excessive force is applied to the tension roller pressing device or the tension roller.

Further, in the invention of claim 5, the tension roller pressing device is provided on both sides of the tension roller. With this configuration, when the tension roller is nipped in a pressed state, the tension roller is nipped in a state in which both sides of the tension roller are pressed, so that an excessive force is applied to the tension roller pressing device and the tension roller. Nothing.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional ball polishing and feeding device as viewed from the front.

FIG. 2 is a perspective view of a conventional tension roller mechanism with first and third tension rollers opened.

FIG. 3 is a perspective view of a tension roller mechanism to which the tension roller pressing device according to the embodiment is attached.

FIG. 4 is an exploded perspective view of the tension roller pressing device.

FIG. 5 is a top view showing a state before the tension roller pressing device presses and fixes the second tension roller and a state after pressing and fixing the second tension roller.

FIG. 6 is a schematic side view showing a state before the second tension roller is pressed and fixed and a state after the second tension roller is pressed and fixed.

FIG. 7 is an exploded perspective view of a tension roller pressing device according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ball polishing and feeding apparatus 3 Lifting cylinder main body 5 Conveying belt 7 Tension roller mechanism 8 First tension roller 9 Second tension roller 10 Third tension roller 30 Base member 31 First tension roller shaft 32 Second tension roller shaft 32 First 3 tension roller shaft 34 first tension roller support member 35 first tension roller fixing member 40 second tension roller support member 42 support shaft 43 spring 45 third tension roller support member 46 third tension roller fixing member 60 tension roller pressing device 61 Holding member 62 Support member 63 Roller pressing part 64 Sliding part 65 Screw insertion hole 66 Support shaft insertion hole 67 Guide part 68 Guide protrusion 69 Fixed part 70 Screw escape hole 71 Screw part 72 Nut 73 Washer Over 74 clamping screw

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C088 BA96 BA99 CA23 EA40 EA44 3F023 AA06 AB05 BA02 BB06 BC04 CA06 EA03 3F026 AA04

Claims (5)

[Claims] A pachinko ball is sandwiched between a lifting cylinder main body provided with a tension roller mechanism at a lower portion, a transport belt circling the lifting cylinder main body, and a polishing member provided facing the transport belt. In the ball polishing / lifting device for lifting, the tension roller mechanism includes a tension roller that applies tension to the transport belt, and a state in which the tension roller is indirectly pressed in a direction to reduce the tension of the transport belt. And a tension roller holding device capable of being held by the roller. 2. The tension roller pressing device comprises: a holding member for pressing the tension roller; and a support member for supporting the holding member. The holding member includes a sliding portion and a holding member. While a screw insertion hole for inserting a screw is formed, the support member is formed with a guide portion on which the sliding portion slides and a screwing portion on which the holding screw is screwed. The moving portion is slidably fitted into the guide portion, and the holding screw inserted into the screw insertion hole is screwed into the screwing portion and tightened. The ball polishing / lifting device according to claim 1, wherein the ball polishing device is supported at least at two points of the sliding portion and the holding screw. 3. The ball polishing and lifting device according to claim 2, wherein the holding member is detachably attached to the support member. 4. The holding member has a support shaft insertion hole through which a support shaft for supporting the tension roller is inserted, and the holding screw is provided between the support shaft insertion hole and the sliding portion. The screw insertion hole to be inserted is formed, The claim 2 or Claim 3 characterized by the above-mentioned.
4. A ball polishing and conveying device according to claim 1. 5. The ball polishing / lifting device according to claim 1, wherein the tension roller pressing device is provided on both sides of the tension roller.