JPS62267197A - Safety device for page turn-over device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a safety device for detecting an abnormality due to a failure of the drive system in a page turning device that turns pages by suctioning page paper to a suction turning drum. .

[Summary of the Invention] The present invention provides a page turning system in which a document supporting member and a document sliding member move relative to each other, and during this movement, pages of the document to be turned are suctioned and adsorbed onto a turning drum to turn the pages. The apparatus is provided with a rotation detection sensor that detects the rotation of a rotating part of a drive system that performs relative movement between the original support member and the original sliding member, and a By detecting abnormalities, it is possible to detect abnormalities due to drive system failures, etc.

Prior Art] The present applicant previously filed an application for a page turning device using a suction turning drum (Japanese Patent Application No. 175493/1982).

``To briefly explain this page turning device, a document with a page to be turned is placed on a document sliding member, and a document supporting member is placed on the upper surface of the document.

One or both of the document supporting member and the document sliding member move relative to each other, and the document is supported by the document supporting member and moves together.

The suction turning drum has a reduced pressure inside and has suction holes formed on its outer peripheral surface, and is supported by the original sliding member and moves together with the original sliding member to move relative to the original. . Further, this suction turning drum is provided with a pinion, and this pinion is engaged with a rack fixed to the main body of the apparatus, so that the suction turning drum moves and rotates according to the document sliding member.

Then, the document supporting member and the document sliding member move relative to each other, and the suction turning drum moves over the page to be turned, and at the same time, the suction turning drum rotates and the document is turned on the outer peripheral surface of the suction turning drum. The page is turned by suctioning the desired page paper and wrapping it around a suction turning drum.

[Problems to be Solved by the Invention] However, the above page turning device is not equipped with a safety device, and it is desirable to have a safety device in order to ensure the safety of the device, the operator, and the manuscript. . In particular, in the above-mentioned page turning device, since the document sliding member moves to a position protruding into the main body of the device, there is a high probability that an accident such as an operator colliding with this document sliding member will occur. Furthermore, if the manuscript is a valuable original book, the damage may be irreversible.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a safety device for a page turning device that eliminates the above-mentioned drawbacks.

[Means for Solving the Problems] Therefore, the structure of the present invention for achieving the above object includes a document support that supports the document with pages to be turned over and moves together with the document. a document body sliding member that contacts the pages of the document body to be turned and moves relative to the document body support member; and a document body sliding member that follows the movement of the document body sliding member and rotates itself. A page turning device comprising: a suction turning drum that uses suction force to attract pages to be turned on the original document and turn the pages; The present invention is characterized in that a rotation detection sensor is provided to detect the rotation of a rotating part of a drive system that performs a movement, and an abnormality is detected based on the output of this rotation detection sensor.

[Function] Therefore, for example, if an overload is applied to the document sliding member and the rotating part of the drive system does not rotate normally, the rotation detection sensor will no longer issue a normal output signal and an abnormality will be detected. .

[Example] Embodiments of the present invention will be described below based on the drawings.

In FIGS. 1 to 3, the device main body l includes a front plate 2, a rear plate 3. It forms a substantially rectangular shape from two side plates 4 and a bottom plate 5,
Its top surface is open.

Inside the apparatus body l, rollers 7 and rails 8 are provided for moving the document sliding member 6 in the left-right direction. Incidentally, the roller 7 is provided at a lid attachment part 9 fixed to the main body l of the apparatus.

The document sliding member 6 contacts the page paper 10a of the document IO to be turned and moves relative to the document support member 24 and the document IO. Only the movable member 6 is configured to be moved by a drive system 54, which will be described below, to effect relative movement.

That is, the document sliding member 6 includes a flat document base plate 11 and a movable chassis 12 fixed to the lower surface of the document base plate 11.

The original base plate 11 is formed longer than the longitudinal direction of the apparatus main body l and is placed on the upper surface of the apparatus main body l. Further, an opening 14 for a suction turning drum 13 (described below) is formed in this original base plate 11, and the roller 7 is brought into contact with the lower surface of the opening 14, and the movable chassis 12 is placed on the rail 8. ing.

The drive system 54 of the document body sliding member 6 includes two drive wires 15.
is fixed to the movable chassis 12, and the drive wires 15 are respectively hung on drive pulleys 16 and 16 arranged at the left and right ends of the device main body l.

The drive wire 15 is endlessly wound around one of the drive pulleys 16, 16 multiple times and connected to both drive pulleys 1.
6.16 and one drive pulley 1
6 is provided with a spring 17 to prevent the drive wire 15 from sagging during movement.

A drive shaft 18 is connected between the opposing drive pulleys 16.
A pulley 19 is fixed to this drive shaft 18.

A timing belt 20 is placed around this pulley 19, and the other end of this timing belt 20 is placed around a timing pulley 22 that is fixed to the rotating shaft of a step motor 21.

When the step motor 21 is driven, its rotation is transmitted to the drive pulley 16 via the timing belt 20, and the rotation of the drive pulley 16 moves the drive wire 15 to move the document sliding member 6 in the left-right direction. It is supposed to move to .

The manuscript body 1O has at least a plurality of pages such as a book or a document file, and is equipped with a binding section 23. The manuscript body support member 24 is placed on the upper surface of the manuscript body 1O.

The document support member 24 is rotatably provided on the lid attachment portion 9 fixed to the apparatus main body 1, and has a mesh-like member 25 having friction resistance holes attached to its inner surface. The document support member 24 supports the document lO with the page paper lea to be turned open.
4. In this embodiment, the document supporting member 24 does not move, so the document lO does not move together with the document supporting member 24.

In this embodiment, with the above-described structure, only the document body sliding member 6 moves, but the document body IO or the document body l
Both O and the document body sliding member 6 may be moved to perform a relative movement.

The suction turning drum 13 has a cylindrical shape, and its upper side faces the opening 14 of the original platen 11, and its opening surfaces on both sides are closed by side surfaces tt28. This side member 28 is fixed to a support shaft 29 passing through the inside of the suction turning drum 13, and both ends of this support shaft 29 are fixed to the movable chassis 12 so that the side surface member 28 is fixed to the suction turning drum 13. Moving.

The suction turning drum 13 has a ball bearing (not shown) interposed between it and the side member 28 to be rotatable, and a drive wire is inserted into a wire groove 31 formed circumferentially on the outer peripheral surface 27. 32 is wound.

Both ends of the drive wire 82 are fixed to the side plate 4 via springs 33, so that the suction turning drum 13 moves and rotates according to the document sliding member 6.

Suction holes 34 are formed in a certain area on the outer circumferential surface 27 of this suction turning drum 13 .

The interior of the suction turning drum 13 is a depressurized space 36 with a center angle of about 90°, which is defined by a partition plate 35 fixed to the support shaft 29.
and a non-decompression space 37 having a central angle of about 270°, and the suction turning drum 13 corresponding to the decompression space 36.
The upper part is located at the opening 14 of the original platen 11.

When the suction hole 34 is arranged above this decompression space 36, external air is sucked from the suction hole 34, and only the first row of the suction holes 34 are in the decompression space 36 when turning the page. The suction turning drum 13 is arranged above.
is located.

A hole 39 formed in the side member 29 is provided in the decompression space 36.
is open, and a suction hose 40 connected to a suction pump (not shown) is connected to this hole 39.

The paper guide plate 41 has an arc shape and is connected to the suction turning drum 1.
3, and a paper winding space 42 is defined between the paper guide plate 41 and the suction turning drum 13.

The return roller 44 has its shaft rotatably supported tlf by the document sliding member 6, and is disposed at a position several F microns away from the outer peripheral surface 27 of the suction turning drum 13.

A drive wire 45 is pressed against a rotating body 55 fixed to the shaft of the return roller 44, and both ends of the drive wire 45 are fixed to the side plate 4 of the apparatus main body l via springs 46, respectively. When the document sliding member 6 moves, the return roller 44 is rotated by the drive wire 45, and a plurality of sheets of paper (papers other than the pages to be turned) are rotated by the drive wire 45, and a plurality of sheets of paper (papers other than the pages to be turned) are transferred to the suction turning drum 13.
is adsorbed, the paper other than the page paper to be turned over is torn off from the page paper 10a to be turned over.

In this embodiment, the reading means 47 is constituted by a CCD line sensor, and this CCD line sensor is provided below the document base plate 11 and near the opening surface 14 so as to extend along the front-rear direction. ing.

A long and narrow hole is formed in the second document platen 11 of this CCD line sensor, and a glass plate 52 is attached to this hole so that the characters written on the document 10 passing over the CCD line sensor can be optically read. It is designed to be read by . Further, this CCD line sensor is connected to, for example, a reading circuit (not shown), and this reading circuit is further connected to a recording circuit, so that characters and the like written on the document body 10 are recorded on a predetermined recording medium.

The position detection means 48 includes a light shielding plate 49 fixed to the movable chassis 12 and three position detection sensors 50a to 50c provided on the front plate 2 of the apparatus main body l, and moves the document body sliding member 6 at three locations. This position detection sensor 50a=
In c, a light emitting element (not shown) and a light receiving element (not shown) are arranged so as to face each other, and the light shielding plate 49 blocks the optical path between the light emitting element and the light receiving element, so that the original body can be The position of the moving member 6 is detected and a predetermined signal is output.

As shown in FIG. 6, the safety device 30 includes a rotation detection sensor 38 that detects the rotation of any rotating portion of the drive system 54 that moves the document sliding member 6.

In this embodiment, the rotating part serving as the detected part is constituted by the rotating shaft 21a of the step motor 21.

The rotation detection sensor 38 may be any sensor as long as it can detect whether or not the rotating part is rotating, and is configured by, for example, a pulse generator (PG) or a frequency generator (PC). In this example, a pulse generator (
It consists of a pulse generator (PC) and a pulse generator (PC).
) is the PG head fixed to the device main body l and the rotating shaft 21a.
When the magnet piece passes near the PG head due to the rotation of the rotating shaft 21a, a pulse is generated.

A CPU (central processing unit) 53 controls the step motor 21 and the suction pump based on commands from the operation unit 26 and output signals from the foot interactors 50a to 50c, and also controls the safety device 30 as shown in FIG. Execute the flowchart shown.゛That is, the CPU 53 controls the step motor 21 based on the command from the operation unit 26.
(Steps at, a3. in Figure 7).
In step a2) in FIG. It is configured to output an alarm signal to an alarm device (not shown) when a stop is detected.

The operation of the page turning device will be explained below.

Open the page sheet 10a of the manuscript body 10 to be turned over, and as shown in FIG.
0a (the page paper on the left side in the figure) is placed on the document base plate 11 so that the edge of the page paper lea to be turned over is slightly on the suction turning drum 13, and this document body lO
The document supporting lid 24 is placed on top.

When the start switch (not shown) of the operation unit 26 is turned on, the suction pump (not shown) is driven, and after the negative pressure in the reduced pressure space 36 in the suction turning drum 13 has increased sufficiently, the step motor 21 is driven. When the original sliding member 6 moves while contacting the original 10 (towards the right in the figure), the suction pump sucks the external air into the suction hole 3 of the turning drum 13.
Page paper le that is attracted by 8 and should be turned over with this suction force
a is attracted to the suction turning drum l3.

Further, when the document sliding member 6 moves, the suction turning drum 13 moves in the direction of loading the document IO, and the suction turning tram 13 is rotated counterclockwise by the drive wire 36, and the page sheet 10a to be turned is rotated counterclockwise by the drive wire 36. is suction turning drum 1
The page paper 10a that is attracted to the outer circumferential surface 27 of the page 3 and wound around it to be turned over is gradually stored in the paper winding space 42.

When the movement of the document body sliding member 6 progresses and the suction turning drum 13 comes directly below the document stacking section 23 of the document body 10, the drive of the suction pump (not shown) is stopped by a signal from the position detection sensor 50b. From this point on, the suction force of the suction turning drum 13 disappears.

As the document body sliding member 6 moves further from this state,
The paper page wound on the suction turning drum 13 is pulled out from the paper winding space 42 and is stacked on the page paper on the right side as shown in FIG.

When the page paper lOa to be turned is completely overlapped with the page paper on the right side, the rotation of the step motor 21 is reversed by the signal from the position detection sensor 50c, and the document body sliding member 6 is rotated in the opposite direction (toward the left in the figure). When the page moves to the original position and returns to the original position, the step motor 21 is stopped by a signal from the position detection sensor 50a, and page turning is completed.

Therefore, the operation of the safety device 3o during the above operation is explained in the seventh section.
This will be explained based on the flowchart shown in the figure.

When the start switch is pressed, the step motor 21 is turned on and its rotating shaft 21a rotates (step al).

The CPU 53 determines whether or not there is a PG pulse from the rotation detection sensor 38 (step a2), and if there is a PC pulse, it continues to output pulses for driving the motor to the motor drive circuit 43. However, in step a3), it is difficult to determine whether there is a stop request in such a loop, and if the stop button for emergency stop is pressed and there is a stop request, the CP
U53 stops sending pulses to the motor drive circuit 43 to stop the step motor.

In addition, if there is no PG pulse (for example, an overload acts on the document body sliding member 6 and the rotation shaft 21 of the step motor 21
a does not rotate. ) An alarm sounds to notify that there is an abnormality (step a4).

When this alarm finishes sounding, the CPU 53 stops sending the pulse signal to the motor drive circuit 43, and the pulse motor 21 stops (step a5).

In this embodiment, the safety device 3o is configured to detect the rotation of the rotating part of the drive system 54 of the document sliding member 6 as the document sliding member 6 moves. In a device in which the member 24 moves, both the original sliding member 6 and the original supporting member 24 are moved so as to detect the rotation of the rotating part of the drive system 54 of the original supporting member 24. The device is configured to detect the rotation of one or both of the rotating parts of the drive system 54.

[Effects of the Invention] As described above, according to the present invention, a predetermined safety device is provided to detect an abnormality in the drive system that performs relative movement between the document supporting member and the document sliding member. equipment, operation console,
Trouble with the manuscript can be minimized.

[Brief explanation of drawings]

Embodiments of the present invention are shown in FIGS. 1 to 7, in which FIG. 1 is a perspective view of a page turning device, FIG. 2 is a sectional view of the page turning device, and FIG. 3 is a line A-A in FIG. 2. 4 and 5 are partial sectional views of the page turning device showing the page turning operation, FIG. 6 is a sectional view of the safety device, and FIG. 7 is a flowchart of the safety device. 6... Original body sliding member, 10... Original body, 10a.
... Page paper to be turned, 13 ... Suction turning drum, 24 ... Document support member, 30 ... Safety device, 38
...Rotation detection sensor.

Claims (1)

[Scope of Claims] A document support member that supports a document with pages to be turned over and moves together with the document, and a document support member that contacts the page of the document to be turned and is opposed to the document support member. a document body sliding member that moves in a specific manner, and a suction turning device that follows the movement of the document body sliding member and rotates itself to attract a page paper of the document body to be turned over by suction force and turn the page. A page turning device comprising a drum, further comprising a rotation detection sensor for detecting the rotation of a rotating part of a drive system that performs relative movement between the document supporting member and the document sliding member. A safety device for a page turning device, characterized in that an abnormality is detected based on the output of a rotation detection sensor.