JPH0441337A - Continuous delivery device for sheet - Google Patents

Abstract

PURPOSE:To allow sheets to be delivered continuously sheet by sheet by providing two elevator bases to be loaded with sheets. CONSTITUTION:An elevator base 6 positioned on the upper side is elevated as a sheet group 1 loaded on the elevator base is sucked by a suction means 4 from the uppermost part, and moved outside a frame 6 when the delivery of all the sheets 1 on the elevator base 6 is completed. At the same time, a lower elevator base 7 is elevated instantaneously into the distance where the uppermost part of a sheet group 2 loaded thereon can be sucked by the suction means 4 to perform the delivery of the sheets 2. The elevator base 7 moved outside the frame 16 after terminating the delivery of the sheets 2 is lowered down to the lowest end and returned again into the frame 16 so as to be loaded with another sheet group 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous sheet feeding device that continuously feeds laminated sheets of prepaid cards, thin paper, films, ceramic substrates, etc. one by one.

[Prior Art] Conventionally, when stacked sheets are sent one by one to a printing machine or inspection machine, a vacuum suction pad or a suction device that generates negative pressure by blowing air from the top of the stacked sheets is used. , a method is adopted in which the topmost sheet of a group of stacked sheets is sucked up and transported. The stacked sheets are mounted on a lifting platform, and when the top sheet is sent out, it immediately rises, so that a certain distance is always maintained between the suction tool and the top of the stacked sheets. .

[Problems to be Solved by the Invention] However, in the conventional sheet feeding device, a method was adopted in which the sheet feeding device was lowered, a group of sheets was loaded, and an elevator platform was raised to the gripping distance of the suction device. For this reason, in conventional equipment, there is an idle time of 14E between sending out the bottom sheet and sending out the next sheet group, and during that time, subsequent machines such as printing presses and inspection machines must be stopped or run idly. It had the following drawback.

[Purpose of the invention]

The present invention has been made to solve this problem, and an object of the present invention is to provide a continuous sheet feeding device that can always feed out sheets at regular intervals without allowing idle time in subsequent machines.

[Means to solve the problem]

The continuous sheet feeding device according to the present invention is provided with two units: a feeding section consisting of a rotating endless belt and a suction device; a lifting platform that sequentially supplies sheets to a certain distance from the suction device; and a mechanism for raising and lowering the lifting platform. It is formed.

[Action of the invention]

In the present invention, a group of sheets loaded on the elevator platform located on the upper side is sucked from the top by a suction tool, and as it is sent out by the belt, it rises, and when all the sheets on the elevator platform are finished being fed, the elevator platform is lifted up. Move outside the frame.

At the same time, the lower lifting platform rises, and the top of the loaded sheet group instantly rises to the suction distance of the suction tool.
On the other hand, the elevating platform that feeds out the sheets and exits the frame descends to the lowest end, returns to the frame again, and mounts a group of sheets.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is an explanatory diagram of the mechanism of this embodiment, and Fig. 2 is an illustration of the embodiment. Arrange the lower running surface of the endless belt (3) slightly below the lower surface of (4),
An elevating device equipped with a sheet group (1) mounted on a lifting platform (6) that can be raised and lowered within the lower frame (151) of the suction device (4), and a sheet group 0 below the lifting platform (6). A stand (7) is arranged. The lifting tables (6), (7) are attached to nuts OI, 00 which are raised and lowered by the rotation of the racks 8) and (9) connected to motors, and the lifting tables (6), (7) is cylinder (b), a5)
Accordingly, Nat Q[D, moves back and forth on QD and enters and exits frame αωH.

With the above configuration, a group of seats (
1) rises to a distance where the suction tool (4) can suck it, air is supplied to the suction tool (4) and at the same time the belt (3) is rotated. The suction device (4) is attached to the sheet group (1
), a single sheet is suctioned by generating a negative pressure between the belt (3) and the topmost sheet, and brought into contact with the lower surface of the belt (3), and the sheet is sent out in the horizontal direction by rotation of the belt (3). The sheet group (1) rises as the sheets are fed out, and when the sheet group (1) has finished feeding out the sheets on the lifting platform (6), the sheet group (1) rises as the sheets are fed out.
6) is moved back to the outside of the frame 0ω by the cylinder (b). At the same time, a group of seats (2
) rapidly rises to the suction distance of the suction tool (4),
The retracted lifting platform (6), which feeds out single sheets one by one starting from the top sheet of the sheet group (21), descends to the bottom end and is advanced again into the frame a51 by the cylinder (b), and the lifting platform (6) A group of seats will be installed.

In this way, the sheets can always be continuously supplied to the suction tool (4), and the sheets can be continuously sent out without stopping the apparatus when supplying a group of sheets.

The feeding unit of the present invention may use a sheet feeding device invented by the present applicant (Japanese Patent Application No. 103091/1983), or a roller or other conveying mechanism in place of the belt.
Further, the suction device (4) may be, for example, an air holding device invented by the present applicant (Kiken No. 1-51413) or a vacuum suction pad. The lifting platform does not have to be a mechanism that moves back and forth, but only needs to be a mechanism that moves in and out of the frame 0ω, and the lifting mechanism may also use a cylinder or a belt. It is also possible to raise the elevating platform to bring the group of sheets into contact with the transport mechanism and to send out the sheets one by one.

〔Effect of the invention〕

As described above, according to the present invention, by providing a mechanism for lifting and lowering two groups of sheets in a feeding unit equipped with a suction device that can be sucked by an air flow and a feeding device, sheets can be continuously fed one by one. It has become possible to provide a continuous sheet feeding device that feeds out sheets.

[Brief explanation of drawings]

Fig. 1 is an explanatory view of the mechanism of the embodiment of the present invention, and Fig. 2 is a perspective view of the embodiment (1), (21 - sheet group (3) - belt (4) - suction tool). (6), (7
1 ~ Ascending platform (8), (9) ~ Screw 0ω, OD ~ Nut ■, 03 ~ Motor (B), ■ ~ Cylinder
〇ω~ Frame procedure amendment (method) Commissioner of the Japan Patent Office 1, case description 1990 patent issued 11146704
No. 2, Name of the invention Continuous sheet feeding device 3, Relationship with the amended case Patent applicant Hiroshi Akashi Address 2-7-12-4 Kitasakurazuka, Toyonaka-shi, Osaka Prefecture Address of agent Name 5 Date of amendment order Heisei 6. Subject of amendment “Drawings” August 28, 2017

Claims (1)

[Scope of Claims] A continuous sheet feeding device that feeds sheets one by one from the top of a stack of sheets, characterized in that the device is provided with a lifting platform on which two sheets are mounted.