JPH0542248U - Paper transport mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] In a paper sheet transport mechanism that transports paper sheets by sandwiching them between upper and lower flat belts, the bundle of paper sheets can be transported without applying a load to the belt. .. In the paper sheet transporting mechanism of the present invention, the upper roller for moving the transport belt is made movable, and the upper roller is engaged with the spring, so that the space between the upper and lower flat belts swells when transporting the bundle of paper sheets. And the spring lever moves the upper roller away from the belt, thereby reducing strain on the belt.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a paper sheet transport mechanism, for example, a transport belt mechanism for transporting paper sheets such as certificates, paper slips, and bills.

[0002]

[Prior Art]

 The applicant manufactures the transport mechanism shown in FIG. 3, in which 11 is a transport belt, 11a and 11b are upper flat belts and lower flat belts of the transport belt 11, 12 is an upper roller, and 13 is a lower roller. Rollers 14 are paper sheets, for example, banknotes, and the figure shows a state in which one paper sheet 14 is conveyed while being sandwiched between an upper flat belt 11a and a lower flat belt 11b. The upper flat belt 11a and the lower flat belt 11b are made of rubber, and the upper roller 12 and the lower roller 13 are all fixed to the medium feeding device, and the rotation of the medium moves the feeding belt to move it between the upper and lower flat belts. The sandwiched paper sheets are conveyed.

FIG. 4 shows a state in which a large number of paper sheets, for example, about 40 sheets are conveyed, and FIG. 4 shows the same parts as those shown in FIG. 14a indicates a bundle of bundled paper sheets.

[0004]

[Problems to be solved by the device]

 When the bundles 14a are collectively conveyed as shown in FIG. 4, the conveyor belt 11 is extended and conveyed as shown in the figure. In such conveyance, the tension of the conveyor belt 11 fluctuates greatly, the life of the conveyor belt is shortened, and the upper and lower bundles of the bundled sheets 14a have different conveying speeds, so the bundle is deformed and deformed. We experienced such problems as the load on the paper sheet 14a during transportation increased and the operation of the entire transportation system was affected.

Therefore, an object of the present invention is to suppress fluctuations in tension of the conveyor belt to be small when the paper sheets are conveyed and bundled in the paper sheet conveyance mechanism, and the bundled paper sheets are displaced. It is to provide a mechanism in which the load does not fluctuate significantly in the transportation of bundles of paper sheets.

[0006]

[Means for Solving the Problems]

 The present invention is a transport mechanism in which a paper sheet is sandwiched between an upper flat belt and a lower flat belt that move between a lower roller and a movable upper roller. The free end of the spring fixed to the spring fixing part is hooked to the movable upper roller at the roller fixing part and extends in the direction opposite to the free end. The free end is locked by the spring locking part, the spring force of the spring is set to be smaller than the stretching force of the transport belt, and the spring is generated by the force generated by the swelling of the transport belt when transporting bundles. The flexure moves the movable upper roller away from the conveyor belt, whereby the force applied to the conveyor belt is kept substantially constant.

[0007]

[Action]

 That is, according to the present invention, when the conventional upper roller is a movable roller and the free end of the spring is engaged with the movable roller to convey one sheet, the sheet is placed in the upper and lower flat belts as in the conventional case. When transporting bundles of sheets, the tension of the belt is almost constant because the movable upper roller moves upward due to the flexure of the spring that engages with the movable upper roller and corresponds to the elongation of the belt. 〞It is kept constant and the bundles are transported without any deviation.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS. In FIGS. 1 and 2, the same parts as those shown in FIGS. 3 and 4 are denoted by the same reference numerals, 12a is a movable upper roller which can move up and down, 15 is a spring, and 15a and 15b are springs 15. Free end, 16 is a spring fixing part, 17 is a roller fixing part, 18 is an oval hole, 19 is a spring locking part, 20 is a frame of the device, 21 is a bearing, and 22 is a collar.

FIG. 1 is a plan view of an essential part of an embodiment of the present invention, in which a movable upper roller 12a is connected to a roller fixing portion 17 having a known structure including a bearing 21 and a color 22. The spring 15 is fixed to the frame 20 of the device at a spring fixing part 16 and has a free end 15a extending towards the roller fixing part 17, the tip of the free end 15a being as shown in FIG. And engages with the collar 22 of the roller fixing portion 17 in a hook shape. The free end 15a of the spring 15 and the free end 15b extending in the opposite direction are hooked and locked to the spring lock portion 19 fixed to the frame 20 of the device (FIG. 1). The spring force of the spring 15 is set to be slightly weaker than the extension force required to extend the belt 11.

The operation of the present invention will be described. When a single sheet 14 is conveyed, the spring 15 does not apply a pressing force to the movable upper roller 12a, and the sheet 14 is conveyed in the state shown in FIG. Be done.

When the bundle 14a is conveyed, when a strong force is applied from the belt 11 to the movable upper roller 12a via the outer edge portion of the collar 22, the free end 15a of the spring 15 bends to move the movable upper roller. The la 12a is lifted upward in FIG. 2 (perpendicular to the paper surface in FIG. 1) in a direction away from the conveyor belt 11. An elliptical hole 18 is formed in the frame 20 of the apparatus to allow this movement of the movable upper roller 12a. When the bundle 14a passes the movable upper roller 12a, the spring 15 and the movable upper roller 12a return to their original state.

[0012]

[Effect of the device]

 As described above, according to the present invention, when a single sheet is conveyed, the sheet is sandwiched between the upper flat belt and the lower flat belt of the belt and is conveyed in the same manner as in the conventional example. In the case of bundle sheets, a strong force is applied to the movable upper roller 12a via the belt, and the fixed force causes the spring to bend, whereby the movable upper roller engaged with the free end of the spring is Since the bundles are moved without moving the belt and the tension is not changed in the belt, the stacked sheets are conveyed without increasing the load, which solves the problems experienced in the past and extends the service life of the belt. As a result, the bundles of paper sheets are prevented from being deformed, the heavy load during transportation is prevented, and the smooth operation of the transportation system becomes possible.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part of an embodiment of the present invention.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is a side view of a paper sheet conveying mechanism manufactured by the applicant.

FIG. 4 is a side view showing a state in which a paper sheet conveying mechanism manufactured by the applicant of the present invention conveys a bundle of paper sheets.

[Explanation of symbols]

 11 Conveyor belt (belt) 11a Upper flat belt 11b Lower flat belt 12 Upper roller 12a Movable upper roller 13 Lower roller 14 Paper leaf 14a Bundled paper leaf 15 Spring 15a, 15b Free end of spring 16 Spring fixed part 17 Roller fixed part 18 Oval hole 19 spring lock 20 device frame 21 bearing 22 collar

Claims (1)

[Scope of utility model registration request] 1. A paper sheet is placed between an upper flat belt (11a) and a lower flat belt (11b) of a conveyor belt (11) which moves between a lower roller (13) and a movable upper roller (12a). In the transport mechanism that moves by 3, the movable upper roller (12a) is connected to the roller fixing part (17) composed of the bearing (21) and the collar (22), and the movable upper roller (12a) is fixed to the spring fixing part (16). The hooked tip of the free end (15a) is movable by the roller fixing part (17).
The free end (15b) that engages with a) and extends in the opposite direction to the free end (15a) is locked by the spring locking part (19), and the spring force of the spring (15) is ), The spring (15) bends due to the force generated by the swelling of the conveyor belt (11) when the bundles (14a) are conveyed, and the movable upper roller (12a) moves the conveyor belt (12a). A paper sheet transport mechanism characterized by being moved in a direction away from (11) so that the force applied to the transport belt (11) is kept substantially constant.