JPH0643074Y2 - Sheet presser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for pressing a sheet conveyed by a sheet conveying conveyor.

[Conventional technology]

2. Description of the Related Art As a paper feeding device for feeding sheets such as corrugated cardboard sheets one by one to a sheet processing device such as a sheet punching device or a printing device, the one shown in FIG. 6 has been conventionally known.

The sheet feeding device feeds the sheets S stacked in the sheet feeding section A one by one from the upper side to the front feed roller 1,
By the rotation of the feed roller 1, the sheet S is fed onto a sheet conveying conveyor 2 provided in front of the feed roller 1 to be wrapped on the sheet S fed earlier, and the sheet S in the wrapped state.
Is conveyed forward by the sheet conveying conveyor 2, and the front end of the sheet S is positioned by the front pad B provided on the front side of the conveyor 2.

In the sheet feeding device, the rotation speed of the feed roller 1 is set to be higher than the moving speed of the sheet conveying conveyor 2 to wrap the sheet S on the sheet conveying conveyor 2. There is a case where the sheet S delivered to the sheet is not delivered in parallel and is delivered to the sheet conveying conveyor 2 in an irregular state in which the sheet S is displaced.

In addition, the sheet S sent to the sheet conveying conveyor 2
Moves along the upper surface of the sheet S that has been sent out first, so that the sheet easily moves, the lap amount is not constant due to the shift movement of the sheet, and the parallelism of the sheet S is impaired and the sheet easily tilts.

In order to eliminate such an inconvenience, in a sheet feeding device, a sheet pressing roller C is usually provided on the sheet conveying conveyor 2 so as to prevent the shift movement and the inclination of the sheet S.

The sheet pressing roller C is changed to the sheet S by changing the order.
When the size of the sheet changes, the position of the sheet S is adjusted to the front, rear, left and right.

[Problems to be solved by the device]

By the way, in a conventional sheet feeding device, a plurality of guide bars that are long in the sheet transport direction are provided so that the positions thereof can be adjusted in the left-right direction, and a plurality of sheet pressing rollers are movably attached along each guide bar. Therefore, the position adjustment of the sheet pressing roller C in the front-back direction is performed by the sheet pressing roller C.
It is necessary to adjust the positions of the sheet pressing roller C and the position of the sheet pressing roller C, which is very troublesome.

Further, since the sheet pressing rollers C are arranged in a zigzag manner, there is a disadvantage that the parallelism is lost during conveyance of the sheet S by the sheet conveying conveyor 2 and the sheet is gradually inclined.

This invention has a technical problem to solve the above-mentioned inconvenience and to facilitate the position adjustment of the sheet pressing roller.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, in this invention, long guides are provided on both sides of a sheet conveying conveyor in the sheet transfer direction, and a pair of left and right slide members provided movably along the respective guides reverse screws. A pair of roller support frames that support both ends of the screw shaft and the guide shaft and are movably supported along the guide shaft, and the right screw portion of the screw shaft is threadedly engaged with one of the pair of roller support frames, and the other roller A left screw portion of a screw shaft is screwed to the support frame, and a plurality of sheet pressing rollers are attached to each roller support frame.

[Action]

When adjusting the position of the sheet pressing roller in the front-rear direction, each slide member supporting both ends of the screw shaft and the guide shaft to which the roller support frame is attached is moved in the front-rear direction along each guide.

Also, when adjusting the left and right direction of the sheet pressing roller,
The screw shaft is rotated, and the pair of roller support frames that support the sheet pressing roller are moved symmetrically along the guide shaft.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, on the front side of the pair of upper and lower feed rollers 1, there is connected a sheet conveying conveyor 2 that receives the sheet sent from the rollers 1 and conveys the sheet forward.
A holding frame 3 is provided on the sheet conveying conveyor 2.

2 to 5 show details of the holding frame 3. The holding frame 3 has a square shape, and pins 4 are provided on the front portions on both sides thereof.
The pin 4 is rotatably supported by a bracket (not shown). Therefore, the holding frame 3 can swing vertically about the pin 4.

The holding frames 3 located on both sides of the sheet conveying conveyor 2
A pair of guide frames 5 are attached to both sides of the guide frame 5, and guides 6 that are long in the sheet transport direction are formed inside the guide frames 5, and two slide members 7 are movably supported along the guides 6. ing.

A screw shaft 8 and a guide shaft 9 are passed between the slide members 7 facing each other on the left and right, and both ends of both shafts 8 and 9 are rotatably supported by each slide member 7, and one slide member 7
Handles 10 and 11 are attached to one end of the screw shaft 8 and one end of the guide shaft 9 which penetrates through and protrudes outward.

The screw shaft 8 is formed with a right-hand screw 12 and a left-hand screw 13 with the center part as a boundary. On the other hand, both ends of the guide shaft 9 have pinions.
14 are attached, and each pinion 14 meshes with a rack 15 fixed to the inner surface side of the guide frame 5.

A pair of roller support frames 16 is movably provided at both ends of the guide shaft 9.

The roller support frame 16 has a pair of left and right support plates 17, and a nut 18 that engages with the screw of the screw shaft 8 is attached to each support plate 17. The guide shaft 9 is provided below the pair of support plates 17.
A pair of bars 19 parallel to each other are attached to the front and rear, and a plurality of roller support shafts 20 supported by the pair of bars 19 are provided at required intervals in the left-right direction.

As shown in FIG. 5, a holder 21 is screwed to the front and rear ends of each roller support shaft 20, one end of the roller arm 22 is swingably connected to the holder 21, and the other end of the roller arm 22 is connected. A plurality of sheet pressing rollers 23 are rotatably mounted on a section. The plurality of sheet pressing rollers 23 are arranged in a straight line in a direction orthogonal to the sheet conveying direction.

In the case of the embodiment, the plurality of sheet pressing rollers 23 are attached to the roller supporting frame 16, but the sheet pressing roller 23 and a brush roller may be attached in combination although not shown in the drawing.

The pressing device shown in the embodiment has the above-described structure. When the sheet is conveyed by the sheet conveying conveyor 2, the pressing frame 3 is rotated downward so that the sheet conveyed by the sheet conveying conveyor 2 is conveyed by the sheet pressing roller 23. Make it hold down.

When the size of the sheet changes due to the order change, the position of the sheet pressing roller 23 is adjusted in the front-rear direction and the left-right direction according to the size of the sheet.

When adjusting the front-back direction, by operating the handle 11,
The guide shaft 9 is rotated. By the rotation of the guide shaft 9,
The pinion 14 rotates together with the guide shaft 9, and the pinion 14 moves along the rack 15. Therefore, the pair of left and right slide members 7 move along the guide 6 and
The roller support frame 16 supported by the guide shaft 9 and the screw shaft 8 also moves, and the plurality of sheet pressing rollers 23 can be simultaneously adjusted in the front-rear direction.

The slide member 7 may be moved along the guide 6 by other means such as a motor or a piston cylinder.

When adjusting in the left-right direction, the screw shaft 8 is rotated by rotating the handle 10. Due to the rotation of the screw shaft 8, the pair of left and right roller support frames 16 are moved symmetrically, and the plurality of sheet pressing rollers 23 supported by the roller support frame 16 are simultaneously adjusted in the left and right direction. Since the pressing roller is arranged on a straight line, the sheet can be conveyed regularly without causing the sheet to tilt.

The screw shaft may be rotated by other means such as a motor.

[Effect of device]

As described above, in the sheet pressing device according to the present invention, the roller support frame that supports the plurality of sheet pressing rollers simultaneously moves in the front-rear direction as the slide member moves in the front-rear direction. When is rotated, the roller support frame moves symmetrically, so that the position adjustment of the sheet pressing roller in the front-rear direction and the left-right direction can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a schematic view of a seat pressing device according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a perspective view of the same, and FIG. 4 is a cross section taken along line IV-IV of FIG. 5 and FIG. 5 are perspective views showing the supporting portion of the roller, and FIG. 6 is a schematic view of the paper feeding device. 2 ... Sheet conveyor, 6 ... Guide, 7 ... Slide member, 8 ... Screw shaft, 9 ... Guide shaft, 16 ... Roller support frame, 23 ... Sheet pressing roller.

Claims (1)

[Scope of utility model registration request] 1. A sheet conveying conveyor is connected to a front side of a sheet feeding unit, and a sheet holding device provided on the sheet conveying conveyor is provided with long guides on both sides of the sheet conveying conveyor in a sheet conveying direction. One of a pair of roller support frames that supports both ends of a screw shaft having a reverse screw and a guide shaft by a pair of left and right slide members movably provided along the guide shaft and is movably supported along the guide shaft. The right screw part of the screw shaft is screw-engaged with, the left screw part of the screw shaft is screw-engaged with the other roller support frame, and a plurality of sheet pressing rollers are attached to each roller support frame. Sheet presser.