JPH0729348U - Belt tension adjusting device in banknote transport device - Google Patents

Abstract

(57) [Summary] [Purpose] The tension of the belt is always kept constant,
It is an object of the present invention to provide a belt tension adjusting device in a bill transporting device that is easy to adjust and does not require adjustment in response to temperature changes. [Structure] A slider that slides in the upper and lower frames of a transport unit is provided, and a pulley shaft holder is provided on the slider and a spring locking piece is provided. It is a belt tension device in a bill transporting device in which a pair of left and right tension springs are provided in the upper and lower frames in correspondence with the left and right pulleys.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for automatically adjusting the tension of a conveyor belt in a banknote conveyor.

[0002]

[Prior art]

 A ball lending machine that sends out banknotes received from the front side of the game table to the back side of the game table is installed between adjacent multiple play tables, and the banknotes sent out from each ball lending machine are pinched on the back side of the play table row and specified. A device for transporting to the position is known, and moreover, the portion extending over the length of the adjacent play table across the ball lending machine is divided into a plurality of transport devices in the transport direction as one unit. As shown in FIGS. 11, 12, and 13, the device for adjusting the belt tension in each of the transport units has a left and right side on the slopes 1a, 2a, 3a, and 4a formed on the upper and lower adjust cams 1, 2, 3, and 4. The respective pulley shafts 5 and 6 are engaged with each other, and the screw holes 7 provided on the side surfaces of the left and right upper and lower adjust cams 1, 2, 3, and 4 of 1b, 2b, 3b, and 4b are inserted into the holes of the upper and lower frames 8 and 9. The adjusting screws 11 passed through 10 are screwed in to move the adjusting cams 1, 2, 3 and 4 to the left and right to adjust the belts a and b for each conveying unit. Reference numeral 12 in the figure is a support plate for supporting the adjust cams 1, 2 or 3, 4 on the frames 8, 9 and is provided with a slit 13 through which the shafts 5, 6 can slide.

[0003]

[Problems to be solved by the device]

 The above device has the following problems. a With the above-described adjust cam, the adjustment range is small, and therefore the tension may not be adjusted when the belt stretches greatly due to temperature changes or the like. b It is difficult to adjust the belt tension as a whole as a whole, including the fact that the left and right belts of the transfer unit have different lengths. c It takes time and effort to adjust the tension of the left and right belts individually for each transport unit. d Periodic inspections are required after installation. In order to solve the above-mentioned conventional problems, the present proposal is that the tension of the belt is always kept constant, the adjustment is easy, and the adjustment of the belt tension is not necessary according to the temperature change. The purpose is to obtain the device.

[0004]

[Means for Solving the Problems]

 In order to achieve the above objectives, the present invention provides the following belt tension adjusting device in a bill transporting device. That is, a pair of conveyor belts are installed in the upper and lower frames of the conveyor unit, and in a conveyor configured to drive the conveyor belts via a pulley, a slider that slides in the upper and lower frames of the conveyor unit is provided. , The slider is provided with a pulley shaft holder and a spring lock piece, and tension springs are stretched between the lock piece and the spring lock pieces on the upper and lower frames to support the left and right pulleys. Thus, the belt tension adjusting device in the banknote transport device is provided in a pair of left and right in the upper and lower frames.

[0005]

[Action]

 The upper and lower ends of the left and right sliders slidably provided in the upper and lower frames of the transport unit and one end of the upper and lower frames are locked by tension springs to apply tension to the pulley shaft of the transport belt held by the slider. Therefore, the left and right belts of the transport unit can always be driven while maintaining a constant tension automatically.

[0006]

【Example】

 Embodiments shown in the drawings will be described below. In this proposal, a slider is provided slidably in the upper and lower frames, and a pair of left and right tension springs are provided between the slider and the upper and lower frames. Specifically, in FIGS. 1 and 2, 14 and 15 are upper and lower frames, which are connected to each other by a stay 33 shown in FIG. There are a pair of left and right belts a and b for sandwiching and conveying banknotes between the upper and lower frames 14 and 15, and stretched between a pulley 16 and a pulley 18 and between a pulley 17 and a pulley 19. The pulleys 18 and 19 are rotatably supported on the frames 14 and 15 by their shafts, and the pulley 16 and the pulley 17 are attached to the upper and lower frames 14 and 15 via a tension adjusting device. The tension adjusting device described below is for the belt a, and for the belt b, a similar tension adjusting device is provided symmetrically, so the description thereof is omitted. The slider 20 shown in FIGS. 2, 3, 4, and 5 constitutes a tension adjusting device and is slidable along a rail 14a formed by bending the upper frame 14 and a rail 15a formed by bending the lower frame. Is.

The body of the slider 20 has a U-shape in a front view in which sliding bodies 21 and 22 each having a vertically symmetrical L-shaped cross section are connected by a bridge portion 23, and one end of each of the sliding bodies 21 and 22 is spring-locked. The pieces 24 and 25 are formed so as to protrude inward, and the pulley shaft holders 26 and 27 are formed so as to protrude inward above and below the ends on the bridge portion 23 side. The spring engaging pieces 24, 25 have spring hooking notches 24a, 25a, and the pulley shaft holders 26, 27 have semi-circular notches 26a, 27a for holding the pulley shaft 17a.

The slider 20 as described above slidably moves along the guide rails 14a and 15a formed by bending the upper and lower frames 14 and 15 as described above. A plurality of slider guide protrusions 30 are provided on the upper and lower frames 14 and 15 in order to regulate the separation from the frame 15a, and these are all formed by bending a tongue piece punched from the frame body. An upper frame spring locking piece 28 and a lower frame spring locking piece 29 are provided at the ends of the upper and lower frames 14 and 15 on the pulley 17 side.

In order to mount the slider 20 on the upper and lower frames as described above, the slide bodies 21 and 22 of the slider 20 are set on the inner side surfaces of the guide rails 14 a and 15 a of the upper and lower frames via the slider guide protrusions 30 and slide. It is freely attached and the pulley shaft 17a is housed in the pulley shaft holders 26 and 27 of the slider 20. Next, the tension springs 31 and 32 are respectively engaged with the spring engaging pieces 28 and 29 formed at one end of the upper and lower frames 14 and 15 and the spring engaging pieces 24 and 25 formed at one end of the slider 20, respectively. To stretch.

As a result, the pulley shafts 17a are constantly urged in the outward direction that gives tension by the action of the tension springs 31 and 32. That is, the belt a on the left side is automatically adjusted so as to always maintain a constant tension. In this case, the spring force of the tension springs 31 and 32 is selected in consideration of the tension of the belt a and the conditions such as rotational drive. The slider is mounted in the same manner for each transport unit, and the tension device for the pulley 17 as described above is also symmetrically provided for the pulley 16. There is no end.

[0011]

[Effect of device]

 Since the slider of the present invention uses a spring having a predetermined spring force, the tension of the conveyor belt is always kept constant. Also, since the tension of the left and right belts is automatically adjusted by the spring force, there is no need to individually adjust the tension of the left and right belts, unlike the conventional ones, which makes adjustment easier and saves labor and time. Can be saved. Furthermore, the adjustment of the belt tension becomes larger than the conventional one due to the spring force, so it is not necessary to adjust for the elongation due to the temperature change of the belt.

[Brief description of drawings]

FIG. 1 is a perspective view of the proposed device.

[Figure 2] Slope view of slider

[Figure 3] Front view of the slider

FIG. 4 is a plan view of the slider.

[Figure 5] Side view of the slider

FIG. 6 is a plan view of the upper frame.

FIG. 7 is a view of the upper frame seen from the arrow C in FIG. 6 and DD.
Cross section

FIG. 8 is a plan view of the lower frame.

FIG. 9 is a side view of the lower frame.

10 is a view taken in the direction of arrow C in FIG. 8 and a sectional view taken along line DD.

FIG. 11 is a perspective view of a conventional transfer device.

FIG. 12 is a sectional view taken along line AA of the same as above.

FIG. 13 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 14 Upper frame 15 Lower frame 16 Pulley 17 Pulley 18 Pulley 19 Pulley 20 Slider 21 Sliding body 22 Sliding body 23 Bridge part 24 Spring locking piece 25 Spring locking piece 26 Pulley shaft holder 27 Pulley shaft holder 28 Upper frame spring locking piece 29 Lower frame spring locking piece 30 Slide guide protrusion 31 Tension spring 32 Tension spring

Claims (1)

[Scope of utility model registration request] 1. A conveying device configured to install a pair of opposed conveying belts in the upper and lower frames of a conveying unit and drive the conveying belts via pulleys, to slide in the upper and lower frames of the conveying unit. A slider is provided, a pulley shaft holder is provided on the slider, a spring locking piece is provided, and a tension spring is stretched between the locking piece and the spring locking piece provided on the upper and lower frames. A belt tension device in a bill transporting device provided in a pair of left and right in upper and lower frames corresponding to the above.