JP2004000717A - Tension adjusting device of feed belt in ball lifting/feeding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tension adjusting device of a feed belt in a ball lifting/feeding machine capable of rotating/driving the feed belt always at a proper position and with a proper tension. <P>SOLUTION: A tension roller 17 is energized toward the feed belt 6 by coil springs 15a and 15b mounted around tension adjusting screws 14a and 14b while the tension adjusting screws 14a and 14b pierce through and are supported at frames 12, 13a and 13b and female screws formed in both ends of a roller shaft 16 for journaling the tension roller 17 rotatably and the tension adjusting screws 14a and 14b are engaged with each other. On the other hand, the frames 12, 13a and 13b are attached to the ball lifting/feeding machine 2 so that the contact state between the feed belt 6 and the tension roller 17 can be changed. Accordingly, the feed belt can be rotated/driven at a proper position even if lopsided wear is generated in the feed belt, and the strength of the tension can be easily adjusted by adjusting the tension adjusting screws even if the feed belt is extended/contracted according to a change in the humidity or the like. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a tension adjusting device for a lifting belt in a ball lifting machine which stands on a pachinko island stand and lifts collected balls upward by a lifting belt.

Conventionally, as shown in FIG. 7, in a ball-lifting machine A which stands on a pachinko island stand and lifts collected balls upward by a lifting belt E, the rotation of a motor B is transmitted by a V-belt C. An endless lifting belt E is stretched between a lower roller (not shown) that rotates integrally with the pulley D to be pressed and an upper roller (not shown) provided at the upper inside of the doffer A. In addition, the pachinko balls which flow in from the inflow port G with the rotation of the lifting belt E are lifted up while being polished, and discharged from the discharge port H formed at the upper end. In the doffing machine A having such a structure, a plurality of rollers F1 to F3 are attached to the lifting belt E at a position slightly above the lower roller in order to apply a predetermined tension to the lifting belt E. On the other hand.

However, the above-described lifting belt E is generally made of leather, and often wears unevenly due to long-term use. In such a case, the lifting belt E is moved from the center of the roller that guides the rotational drive. There is a problem that E rotates and rotates, shortening the life of the transport belt E. In addition, since it is made of leather, it has a problem that it expands and contracts due to humidity, loosens its tension during use, and lowers its polishing and transporting ability. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object the purpose of a lifting belt in a ball-lifting machine capable of constantly rotating a lifting belt at an appropriate position and an appropriate tension. It is to provide a tension adjusting device.

In order to achieve the above object, according to the invention of claim 1, tension adjustment of a lifting belt in a ball lifting machine which is erected on a pachinko island stand and lifts collected balls upward by a lifting belt. In the apparatus, the tension adjusting device includes a frame attached to the doffing and feeding machine main body, a tension roller supported by the frame and abutting on the lifting belt to apply tension to the lifting belt, and a tension roller. And a tension adjusting screw capable of arbitrarily adjusting the tension of the lifting belt provided by the tension roller. The roller supports the tension adjusting screw through the frame and rotatably supports the tension roller. In a state where the female screw formed at both ends of the shaft and the tension adjusting screw are screwed together, the tension roller is lifted by a coil spring provided around the tension adjusting screw. While biased toward the belt, it said frame is characterized in that attached to the ball pumped machine so as to change the contact state between the tension roller and the pumped belt.

With the configuration described above, the contact state between the lifting belt and the tension roller can be changed, so that the lifting belt can be rotationally driven at an appropriate position even if uneven wear occurs in the lifting belt. . In addition, even if the lifting belt expands and contracts due to a change in humidity and the like, the strength of the lifting belt can be easily adjusted by adjusting the tension adjusting screw.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the overall configuration of the doffing and feeding machine 1 according to the embodiment will be described with reference to FIG. FIG. 6 is a side view of the doffing and feeding machine 1. In the drawing, a doffing machine 1 is formed by integrating a lifting support 3 and a lifting cylinder 2 erected above the lifting support 3 as a doffing machine main body. I have. That is, an upper roller 4 as a rotating roller is rotatably supported on the upper part of the lifting cylinder 2, and a motor (not shown) as a driving source is built in the lifting support 3. A large-diameter lower drive roller 5 as a rotating roller is provided, and a leather lifting belt 6 is stretched between the upper roller 4 and the lower roller 5. A plurality of internal rollers 2 a (see FIG. 1) for guiding the rotation of the lifting belt 6 are provided inside the lifting cylinder 2 in the vertical direction. The lifting support 3 is provided with an inlet gutter 7 connected to a collecting gutter (not shown). The used balls guided by the inlet gutter 7 are lifted upward by the frictional force of the lifting belt 6. Sent. In the lifting process, the dirt attached to the ball is wiped off by being rubbed with a polishing cloth (not shown) mounted on a polishing cloth mounting door 9 provided on the back surface side of the lifting cylindrical body 2, and is beautifully cleaned. The changed ball is discharged from a discharge gutter 8 provided at the uppermost part of the lifting cylinder 2.

張力 A tension adjusting device 10 for adjusting the tension of the lifting belt 6 is provided on the lifting cylinder 2 slightly above the lower driving roller 5 of the doffing machine 1 configured as described above. The configuration of the tension adjusting device 10 will be described below with reference to FIGS. 1 is a plan view of a portion of the tension adjusting device 10, FIG. 2 is a side view of the tension adjusting device 10 in an operating position, and FIG. 3 is a side view of the tension adjusting device 10 in a release position. FIGS. 4 and 5 are schematic rear views of the tension adjusting device 10 showing the positional relationship between the lifting belt 6 and the tension roller 17.

In the figure, a tension adjusting device 10 is fixed to a substrate 11 attached to a lifting cylinder 2 as a part of a doffing and feeding machine main body, and attached to the substrate 11 so that the attachment state can be changed by a tilt adjusting screw 25. The outer frame 12 has a substantially U-shape in plan view, the inner frames 13a and 13b pivotally supported by the outer frame 12 so as to take an operation position and a release position with respect to the lifting belt 6, and coil springs 15a and The tension roller 17 is supported by the inner frames 13a and 13b via tension adjusting screws 14a and 14b around which the tension roller 15b is provided, and is a rotating roller that can abut the lifting belt 6 at the operation position.

Hereinafter, these will be described in more detail. First, as shown in FIG. 1, the inner frames 13a and 13b are formed in an L-shape, and the long sides of the inner frames 13a and 13b come into contact with the outer frame 12. Tension adjusting screws 14a and 14b are supported through the short sides. Female screws formed at both ends of a roller shaft 16 that rotatably supports the tension roller 17 are screwed to the distal ends of the tension adjusting screws 14a and 14b. Further, coil springs 15a and 15b are provided around the tension adjusting screws 14a and 14b between the roller shaft 16 and the inner surfaces of the inner frames 13a and 13b. Therefore, the tension roller 17 is supported by the tension adjusting screws 14a and 14b, and is always urged toward the lifting cylinder 2 by the coil springs 15a and 15b. When a force that pushes the tension roller 17 in the opposite direction to the lifting cylinder 2 acts against the urging force of the coil springs 15a and 15b, the entire tension adjusting screws 14a and 14b become short of the inner frames 13a and 13b. The slide movement is performed so as to penetrate the side portion. Further, by rotating the tension adjusting screws 14a and 14b, the roller shaft 16 screwed thereto is moved, so that the urging force of the coil springs 15a and 15b can be adjusted arbitrarily. It is possible to arbitrarily adjust the tension of the lifting belt 6 to be performed.

By the way, as shown in FIG. 1, the tension roller 17 in the present embodiment is formed in a so-called barrel shape in which the diameter at the center is large and the diameter gradually decreases toward the end. As shown in FIG. 1, the lifting belt 6 is deformed into a mountain shape while in contact with the belt 6, and the lifting belt 6 always passes through the center of the tension roller 17. In this way, by always allowing the lifting belt 6 to pass through the center of the tension roller 17, the circulation of the lifting belt 6 can be performed smoothly, and the life of the lifting belt 6 can be prevented from being shortened. However, if the belt is used for a long time, the lifting belt 6 may be unevenly worn. In such a case, the plurality of rollers 4, 5, and 2 a including the tension roller 17 are formed only by the shape of the tension roller 17. It is difficult to maintain the lifting belt 6 so that it passes through the center. In consideration of such a situation, in this embodiment, the tension adjusting screw 25 attaches the tension roller 17 to the lifting belt 6 as described later. The state can be changed, and thereby, the lifting belt 6 is maintained so as to pass through the center of the plurality of rollers 4, 5, 2a including the tension roller 17 for a long period of time.

As described above, the inner frames 13a and 13b to which the tension roller 17 is attached have their long sides abutting against the outer frame 12 formed in a flat U-shape as described above. The front end of the frame 12 (in the direction away from the lifting cylinder 2) is fixed by fulcrum screws 18a, 18b, and the rear end of the outer frame 12 (the lifting cylinder 2 side) is fixed by fixing screws 19a, 19b. Have been. In a state where the outer frame 12 and the inner frames 13a, 13b are integrally fastened by the fixing screws 19a, 19b, the tension roller 17 abuts on the lifting belt 6 as shown in FIG. In a state in which the fixing screws 19a and 19b are loosened and the outer frame 12 and the inner frames 13a and 13b are not integrally fixed, as shown in FIG. 13b is a state in which the tension roller 17 on the tip end side is rotated upward with the fulcrum screws 18a and 18b as rotation axes, and the tension roller 17 is in contact with the lifting belt 6 but is in a release position where no tension is applied. Become. In this release position, no tension is applied to the lifting belt 6, so that the lifting belt 6 can be easily removed or attached. Therefore, with the inner frames 13a, 13b at the release position, the worn or cut old lifting belt 6 is removed, and then a new lifting belt 6 is wrapped in that state, and then the inner frames 13a, 13b are lowered. , And the outer frame 12 and the inner frames 13a, 13b are integrally fastened by the fixing screws 19a, 19b, so that the lifting belt 6 can be easily replaced.

On the other hand, the outer frame 12 formed in a flat U-shape is attached to the substrate 11 fixed to the lifting cylinder 2 by fixing screws 20a and 20b. Is as follows. That is, both sides of the substrate 11 and the outer frame 12 are fixed by the fulcrum screw 21 and the moving screw 22. The fulcrum screw 21 functions as a fulcrum when the outer frame 12 is inclined with respect to the substrate 11 as shown in FIGS. 4 and 5, while the moving screw 22 is a vertically long screw formed on the substrate 11. And is fixed to a moving body 26 provided on the back surface of the substrate 11 through the movable elongated hole 23. The moving body 26 is screwed with a tilt adjusting screw 25 that is vertically supported by a back U-shaped screw mounting portion 24 formed on one back surface of the substrate 11. Then, by turning the tilt adjusting screw 25 with the moving screw 22 loosened, the moving body 26 moves up and down, and the outer frame 12 is tilted about the fulcrum screw 21 as a rotation center following the moving body 26, and the desired tilting is performed. By tightening the moving screw 22 at the position, the tilting state of the outer frame 12 can be firmly held.

As shown in FIG. 4, when the left side as viewed from the back is lowered, the center maximum diameter of the barrel-shaped tension roller 17 is inclined to the left and the tension roller 17 is inclined upward. 17 pushes the left side in the width direction of the lifting belt 6 more strongly than the right side in the width direction, so that the lifting belt 6 which comes into contact with the tension roller 17 and is driven to rotate is moved rightward. Therefore, when the lifting belt 6 tends to move to the left due to uneven wear of the lifting belt 6 in the rotation driving in the normal horizontal state without the inclination of the tension roller 17, the left side is lowered as shown in FIG. The lifting belt 6 can be adjusted so as to rotate and drive substantially through the center of the plurality of rollers 4, 5, 2a. On the other hand, as shown in FIG. 5, when the left side as viewed from the back is raised, the center maximum diameter of the barrel-shaped tension roller 17 is inclined to the left and the tension roller 17 is inclined downward. Presses the right side in the width direction of the lifting belt 6 more strongly than the left side in the width direction, so that the lifting belt 6 which comes into contact with the tension roller 17 and is rotationally driven is moved to the left side. Therefore, when the lifting belt 6 tends to move to the right due to uneven wear of the lifting belt 6 in the rotation driving in the normal horizontal state without the inclination of the tension roller 17, the left side is raised as shown in FIG. The lifting belt 6 can be adjusted so as to rotate and drive substantially through the center of the plurality of rollers 4, 5, 2a.

Although the configuration and operation of the tension adjusting device 10 for the lifting belt 6 in the doffing machine 1 according to the embodiment have been described above, according to the present embodiment, the tension roller that can abut the lifting belt 6 at the operation position. 17 is constantly urged by the coil springs 15a and 15b provided around the tension adjusting screws 14a and 14b, so that even if the humidity or the like changes and the lifting belt 6 expands or contracts, it always applies an appropriate tension. Can be provided. The strength of the tension can be easily changed by adjusting the tension adjusting screws 14a and 14b. Also, the inner frames 13a and 13b on which the tension roller 17 is supported are provided on the outer frame 12, and the mounting state of the outer frame 12 can be changed by the inclination adjusting screw 25. The contact state between the lifting belt 6 and the tension roller 17 can be adjusted, so that the lifting belt 6 can be driven to rotate at an appropriate position even if uneven lifting occurs on the lifting belt 6. Furthermore, since the inner frames 13a and 13b on which the tension roller 17 is supported are supported by the outer frame 12 so as to be in a release position where they cannot act on the lifting belt 6, the inner frames 13a and 13b are lifted by cutting or wear. When replacing the feed belt 6, the lifting belt can be easily replaced by setting the inner frames 13a and 13b to the open positions.

In the above-described embodiment, the inner frames 13a and 13b are formed separately and fixed to the outer frame 12, respectively. However, the inner frame is opposed to the outer frame 12 in a plane U-shape. It may be one integrally configured so that

It is a top view of the tension adjusting device part provided in the doffing machine concerning an embodiment. FIG. 4 is a side view of the tension adjusting device in an operation position. FIG. 4 is a side view of the tension adjusting device in a release position. FIG. 4 is a schematic rear view of the tension adjusting device showing a positional relationship between the lifting belt and the tension roller. FIG. 3 is a schematic rear view of the tension adjusting device showing the positional relationship between the lifting belt and the tension roller. It is a side view showing the whole doffing machine concerning an embodiment. It is a perspective view of the conventional doffing machine.

Explanation of reference numerals

1 doffing machine 2 unloading cylinder (body of doffing machine)
3 Lifting support (body of balling machine)
4 Upper roller (rotary roller)
5 Lower drive roller (rotary roller)
6 Lifting belt 10 Tension adjusting device 11 Substrate 12 Outer frames 13a, 13b Inner frames 14a, 14b Tension adjusting screws 15a, 15b Coil spring 16 Roller shaft 17 Tension roller (rotary roller)
18a, 18b Support screw 19a, 19b Fixing screw 20a, 20b Fixing screw 21 Support screw 22 Moving screw 23 Moving long hole 24 Screw mounting part 25 Inclination adjusting screw 26 Moving body

Claims (1)

In a tension adjusting device of a lifting belt in a ball lifting machine that is erected on a pachinko island stand and lifts collected balls upward by a lifting belt,
The tension adjusting device is provided with a frame attached to the doffing machine main body, a tension roller supported by the frame and abutting on the lifting belt to apply tension to the lifting belt, and provided by the tension roller. A tension adjusting screw capable of arbitrarily adjusting the tension of the lifting belt,
The tension adjusting screw is threadedly engaged with a female screw formed at both ends of a roller shaft that rotatably supports the tension roller while supporting the tension adjusting screw through the frame. While urging the tension roller toward the lifting belt by a coil spring provided around,
The tension adjusting device for a lifting belt in a ball lifting machine, wherein the frame is attached to the ball lifting machine so as to change a contact state between the lifting belt and the tension roller.

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