JPH0683649U - Blown feet - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a blowing foot for a paper feeding device without paper feeding failure. [Structure] A sheet of paper 1 on a stack of stacked monosheets
2 is sucked by the suction cups 2 to 5 under negative pressure,
Lift the edge of the paper 12. Then, the tip of the blowing foot 1 of the present invention is put under the lifted paper 12 and air is sent horizontally and upward to lift the entire paper. Paper 12 that is lifted horizontally by the air blown by the blower foot 1.
Is sucked up by the suction cups 6 to 10, and the paper 12 is moved while being supported horizontally, and the paper is sent to the printing machine.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a blowing foot of a paper feeding device that feeds paper to a printing machine.

[0002]

[Prior art]

 Conventionally, when printing on a single sheet of paper, the method of feeding the paper one by one from the stack of stacked sheets to the printing machine is to rotate the rubber roller and use the friction to feed it. There was a method of sucking only one sheet and lifting and sending it. The method using a rubber roller may send two sheets in an overlapping manner, but the method of sucking and lifting with a suction cup can move exactly one sheet of paper, so it is often used in industrial printing machines. ing.

As an example of a paper feeding device that sucks and lifts a suction cup to feed paper, there is a device having a mechanism as shown in FIG. The operation is shown in FIGS. 10 and 11 for the purpose of explaining the apparatus viewed from above. First, one end of the stack of papers is sucked by sucking the end of the paper 14 with the suction cups 2 to 5. Just gently lift. Next, the blowing foot 11 enters between the paper 14 and the rest of the paper bundle 15, and air is blown therein as shown by the arrow so that the paper 14 is peeled from the paper bundle 15 and lifted up to the whole. Then, the suction cups 6 to 10 suck and support the paper 14 and move it toward the printing machine.

[0004]

[Problems to be solved by the device]

 However, as shown in FIG. 12 which is a front view of the apparatus of FIG. 10, since the suction cup 3 and the suction cup 4 are separated from each other, the suction cup 7 cannot suck the paper 14 and the paper 14 is moved. In some cases, it failed and paper was not sent to the press, and the press stopped automatically.

An object of the present invention is to provide a blowing foot for a paper feeding device without paper feeding failure.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, in the blow foot of the present invention, a means of forming air is blown out not only laterally but also upward.

[0007]

[Action]

 Suck one of the stacked sheets of paper with a suction cup of negative pressure air and lift the edge of the paper. Then, insert the tip of the blowing foot of the present invention under the lifted paper, and blow the air laterally and upward to lift the entire paper. The horizontally lifted paper is sucked up by a suction cup other than the suction cup, moved while supporting it horizontally, and the paper is sent to the printing machine.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings showing an embodiment. 1 is a perspective view of an embodiment of the blowing foot according to the present invention, FIG. 2 is a perspective view of a paper feeding device using the blowing foot of FIG. 1, and FIGS. 3, 5, and 8 are the paper feeding devices of FIG. FIG. 4 is an explanatory view of the same sheet feeder as seen from the front, and FIG. 6 is a sectional view taken along the line AA of FIG.

The outer shape of the blowing foot 1 according to the present invention is similar to that of a duck's foot, and the air sent through the pipe 1c branches at the root of the fan and blows out from the part that hits the tip of the fan. The three air outlets 1a at the center of the air outlets are attached upward and blow out the air upwards. Further, the air outlets 1b, 1b at both ends blow out air in the lateral direction. Here, the screw 1d is for attachment.

The blow foot 1 is arranged and attached to the paper feeding device as shown in FIG. In FIG. 3, which shows a state before the operation of the blow feet 1 of the sheet feeding device of FIG. 2, the suction cups are arranged in a line in the order of being closer to the blow feet 1, the suction cups 2 to 5, the suction cups 6 to 8, and then the suction cups 9 to 10. Are lined up. 3 and 4 show the stage before the paper is fed. First, the suction cups 2 to 5 suck up the paper 12 and lift it from the state shown in FIGS. At this time, the suction cups 2 to 5 move integrally and only in the vertical direction.

Subsequently, as shown in FIGS. 5, 6 and 7, the tip end portion of the blowing foot 1 enters under the lifted paper 12 and blows air upward and laterally from the outlets 1a and 1b, respectively. Blow out. At the same time, the suction cups 6 to 10 move in a direction approaching the blow foot 1. The suction cups 6 to 10 move as a unit only in the front-rear direction. Here, the arrow shown in each figure shows the flow of air.

When air is blown into the lower part of the paper 12 lifted by the suction cups 2 to 5 by the blow foot 1, the paper 12 is lifted so as to be peeled from the bundle of papers 13. The paper 12 lifted up as a whole is sucked by the suction cups 6 to 10. At this time, the paper 12 is sucked by nine suckers as shown in FIG. The sucker 7 that may have failed to suck in the conventional blowing foot is also lifted up by the wind from the upward blowing outlet 1a of the blowing foot 1, and thus sucks the paper 12 well.

Next, the suction cups 2 to 5 stop the suction, the suction cups 6 to 10 move to the position shown in FIG. 8 while sucking the paper 12, and then the suction cups 6 to 10 stop the suction. In this way, the paper 12 is sent to the next printing stage. In this way, each part returns to the initial position shown in FIGS. 3 and 4, and the same operation is repeated.

FIG. 9 shows another embodiment of the blowing foot according to the present invention, in which a blow-out port 1f for blowing air upward is newly provided in addition to the blow-out port 1e in the lateral direction.

[0015]

[Effect of device]

 As described above, since the blowing foot of the present invention blows out the air in the lateral direction and also blows the air upward to lift the paper, the paper sticks to the suction cup for feeding the paper. , Paper feed failure is gone.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a blow foot according to the present invention.

FIG. 2 is a perspective view of an example of a sheet feeding device using the blowing feet of FIG.

FIG. 3 is an explanatory view from above of the sheet feeder of FIG. 2 before the blow foot operation.

FIG. 4 is an explanatory view from the front of the paper feeding device in the state of FIG.

5 is an explanatory view from above during the blowing operation of the paper feeding device of FIG. 2. FIG.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is an explanatory diagram from the front of the sheet feeding device in the state of FIG.

FIG. 8 is an explanatory diagram from above after the blow foot operation of the paper feeding device of FIG. 2;

FIG. 9 is a perspective view of another embodiment of the blow foot according to the present invention.

FIG. 10 is a perspective view of an example of a sheet feeding device using a conventional blowing foot.

11 is an explanatory view from above of the paper feeding device of FIG.

12 is an explanatory view from the front of the paper feeding device of FIG.

[Explanation of symbols]

 1,11 Blowing feet 1a, 1b, 1e, 1f Blowout port 1c Pipe 2,3,4,5,6,7,8,9,10 Sucker 12,14 Paper (single sheet) 13,15 Paper bundle

Claims (1)

[Scope of utility model registration request] 1. A blowing foot of a sheet feeding device for sucking and moving a single sheet by a plurality of suction cups, wherein the blowing foot is formed so as to blow out air not only laterally but also upward.