JP4156260B2 - Cover positioning mechanism in bookbinding equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cover positioning mechanism of a bookbinding apparatus.
[0002]
[Prior art]
FIG. 10 is a diagram illustrating a schematic configuration of an example of a bookbinding apparatus, and FIG. 11 is an explanatory diagram for explaining a bookbinding process of the bookbinding apparatus in FIG. 10, which will be briefly described with reference to FIGS. 10 and 11. The apparatus 1 is provided with a clamp part 2, a milling part 3, a gluing part 4, and a nipping part 5, and a clamper 6 including a movable clamp plate 7 and a fixed clamp plate 8 is configured to move each part in order.
[0003]
The clamp unit 2 is configured such that, for example, sheets 15 sent from a printing machine, a copier, or the like are stacked in the order of pages, and one sheet of stacked sheets (hereinafter referred to as “body”) 16 is a movable clamp plate of the clamper 6. 7 and the fixed clamp plate 8 are inserted with the back surface 18 of the main body 16 facing the level plate 9, and the inserted main body 16 is moved to the fixed clamp 8 side of the movable clamp 7, that is, the clamper 6 is closed and the main body is closed. 16 is a part that holds the clamper 6 on the clamper 6 (the bookbinding process starting step of the body 16).
[0004]
The milling unit 3 is a unit that aligns the back surface 18 of the main body 16 held by the clamper 6 with the clamp unit 2 by the milling machine 10 (milling process step of the main body 16). The gluing part 4 is a part (gluing process step of the main body 16) that is glued by the gluing machine 11 to the back surface 18 of the main body 16 that is flush with the milling unit 3. The operations at the milling unit 3 and the gluing unit 4 are performed along with the movement of the clamper 6 while the body 16 is held by the clamper 6.
[0005]
The nipping unit 5 is configured such that one cover sheet 17 of a cover sheet stocker (or a paper feed table) is previously conveyed onto the nip plates (clamp plates) 12 and 13 and positioned at a predetermined position. The main body 16 glued to the back surface 18 sandwiched by the clamper 6 is positioned on the upper part located between 12 and 13, the nip plates 12, 13 and the bottom plate 14 are slightly raised, and the main body 16 is nipped with the cover 17 interposed therebetween. A cover 17 is attached to the back surface 18 of the main body 16 on the bottom plate 14 between the plates 12 and 13, and the nip plates 12 and 13 are moved almost simultaneously so that the vicinity of the edge portion on the back surface 18 side of the main body 16 from both sides. It is a part (covering process step) for attaching a cover to fold the cover 17 and tighten the cover 17 along the body 16.
[0006]
Although the bookbinding device is configured as described above, the small-size binding device does not include a cover positioning temporary attachment mechanism before nipping in order to reduce the size of the device, and the nipper unit positions the cover. There must be. For this reason, conventionally, a cover positioning guide is provided in the nipping portion, and the four sides of the cover are regulated by this guide for positioning.
[0007]
[Problems to be solved by the invention]
In the conventional small-size binding device, as described above, the cover is positioned in the nipping portion by restricting the four sides of the cover with the guide. Since it was difficult to automatically adjust the guide position with precision for the size cover, and it was necessary to manually adjust the guide position, the position of the cover positioning guide when the cover size was changed The adjustment work took time and effort. Further, since the position of the guide is manually adjusted, it is difficult to finely adjust the cover with respect to the main body accurately by a desired amount in the vertical direction.
Furthermore, if a guide is provided at the top of the nipping part as described above, the cover positioning guides provided on the four sides of the nipping part become an obstacle when the clamper moves the booklet after nipping. As a result, the apparatus becomes complicated and it is difficult to speed up the operation.
[0008]
The present invention has been made in view of the above-described problems. With a simple mechanism, the cover can be accurately positioned, and the adjustment of the position for positioning the cover when the cover size is changed can be automated. An object of the present invention is to provide a cover positioning mechanism for a bookbinding apparatus.
[0009]
[Means for Solving the Problems]
The present invention according to claim 1 is provided with a cover transport belt, a cover positioning stopper that can be moved up and down, and a control circuit that controls forward and reverse rotation of the cover transport belt and the lift of the cover positioning stopper. With the stopper lowered, the cover transport belt is driven to feed the cover, the cover positioning stopper is raised, the cover transport belt is driven in reverse rotation, and the rear end of the cover touches the cover positioning stopper. Further, it is characterized in that a control for positioning the cover at a predetermined position is performed by driving the cover transport belt forward by a predetermined amount.
[0010]
According to a second aspect of the present invention, there is provided a cover positioning mechanism in the bookbinding apparatus according to the first aspect, further comprising a cover rear end detection sensor for detecting the rear end of the cover. , in the cover positioning mechanism in the bookbinding device according to claim 1, Ru der made comprise means for varying the pressure force of the cover transport belt.
[0012]
In the present invention, since the cover is positioned by using the belt feed, the cover can be accurately positioned with respect to the covers of various sizes in the nipping portion, and manual adjustment of the guide is not necessary. it can. Further, in the present invention, since the control circuit has means for inputting numerical values for the amount of feeding the cover from the position of the cover positioning stopper, a desired amount of cover in the vertical direction is applied to the main body, which is particularly difficult to automate. Fine adjustment to shift accurately is possible only by inputting numerical values. Further, since it is not necessary to provide a guide in the direction of movement of the clamper after nipping, a mechanism for escaping the guide is not necessary, and the cost and speed of the bookbinding apparatus can be reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are views showing a cover sheet positioning mechanism of a nipping portion according to an embodiment, FIG. 1 is a side view, and FIG. 2 is a top view. 3 to 8 are diagrams showing an operation state of the cover sheet positioning device, and FIG. 9 is an operation time chart of the cover sheet positioning device.
[0014]
1 and 2, 6 is a clamper, 16 is a body, 17 is a cover, 21 is a cover pressurizing and transporting belt, 22 is a cover transporting motor that drives the cover pressurizing and transporting belt 21, 23 is a state switching cam, and 24 is A cam motor for driving the state switching cam 23, 25 is a cover top / bottom direction reference stopper, 26 is a pressure spring, 27 is an arm fitted on the drive shaft of the cover pressure conveying belt 21, 28 is a rotation shaft of the arm 27, 29 is A cover rear end detection sensor 30 is a cover back edge direction guide.
[0015]
The front cover 17 is fed into the nipping unit 5 while being guided by the front cover spine direction guide 30 by a front cover pressure transport belt 21 driven by a front cover transport motor 22. The pressure spring 26 is attached between the arm 27 and the pin provided on the state switching cam 23, and is not attached to the right arm 27 and the state switching cam 23 in FIG. The state switching cam 23 driven by the cam motor 24 moves the cover top / bottom direction reference stopper 25 up and down, pushes up the arm 27 and rotates the arm 27 about the rotation shaft 28, Also works to release pressure. Further, the state of the pressure spring 26 is changed by the rotation of the state switching cam 23, and the pressure applied to the cover sheet pressure conveying belt 21 via the arm 27 is switched. Therefore, the cover pressurizing and conveying belt 21 can perform pressurization and pressurization releasing operations and stepless change of the pressurizing force by the rotation of the state switching cam 23. The cover top / down direction reference stopper 25 is a cover stopper serving as a positioning reference in the top / bottom direction of the cover, and moves up and down in the right direction by several millimeters (for example, 4 mm) with respect to the body reference. The cover rear end detection sensor 29 detects the rear end of the cover 17 fed by the cover pressurizing and conveying belt 21 and outputs a detection signal. The cover back edge guide 30 is driven by a motor (not shown) to position the cover in the back edge direction. The drive motors for the cover sheet conveyance motor 22, the cam motor 24, and the cover sheet spine direction guide 30 are driven by a control circuit (not shown), and this control circuit includes an input means that can set the cover sheet feed amount numerically.
[0016]
Next, the operation of the cover positioning mechanism shown in FIGS. 1 and 2 will be described with reference to the operation explanatory diagrams of FIGS. 3 to 8 and the operation time chart of FIG.
FIG. 3 is a diagram showing a state when the cover is supplied (operation time chart 1 of FIG. 9). Unlike FIG. 11, the cover 17 is supplied from the right side of FIG. At this time, the state switching cam 23 is in the position shown in the figure, the cover top / down direction reference stopper 25 is lowered, and the cover pressurizing and conveying belt 21 is strongly pressed by the pressurizing spring 26 via the arm 27. Yes. When the cover transport motor 22 is driven by the control circuit with the cover back edge direction guide 30 being opened several millimeters from the predetermined interval, the cover 17 is fed into the nipping unit 5 by the cover pressurizing transport belt 21 and the rear end of the cover When the detection sensor 29 detects the rear end of the cover sheet 17, the control circuit stops the cover sheet transport motor 22. At this time, the rear end of the cover 17 has passed the position of the cover top / bottom direction reference stopper 25 and is sandwiched between the belts of the cover pressurizing and conveying belt 21.
[0017]
Next, when the cam motor 24 is driven by the control circuit and the state switching cam 23 rotates by a predetermined angle, the state of positioning in the spine direction shown in FIG. 4 (operation time chart 2 in FIG. 9) is obtained. At this time, the state switching cam 23 is in the state shown in the figure, the cover top / bottom direction reference stopper 25 is raised, and the state switching cam 23 pushes up the arm 27 to rotate the arm 27 about the rotation shaft 28 to cover the cover. Since the pressurization of the pressurizing and conveying belt 21 is released, the cover sheet 17 is in a state of being freely moved. In this state, a motor (not shown) is driven by the control circuit to close the cover back edge guide 30 by a set amount, thereby positioning the cover 17 in the back edge direction.
[0018]
After positioning in the cover back edge direction, when the cam motor 24 is further driven by the control circuit and the state switching cam 23 is further rotated by a predetermined angle, the state of abutment of the cover to the reference stopper shown in FIG. 9 is an operation time chart 3). At this time, the cover top / bottom direction reference stopper 25 remains raised, and the cover pressurizing and conveying belt 21 is lowered and is in a weak pressure state. In this state, when the control circuit rotates the cover sheet conveying motor 22 in the reverse direction, the cover sheet 17 is fed in the reverse direction by the cover sheet pressure conveying belt 21, and the rear end of the cover sheet 17 abuts against the cover sheet vertical direction reference stopper 25. As described above, since the pressure applied to the cover pressing and conveying belt 21 is in the weakest state, after the rear end of the cover 17 hits the cover top and bottom direction reference stopper 25, the cover pressing and conveying belt 21 and the cover 17 will slide slightly.
[0019]
Next, after the cover sheet conveyance motor 22 is stopped, when the control circuit further rotates the state switching cam 23 by a predetermined angle by the cam motor 24, the cover sheet vertical direction reference stopper 25 is lowered, and the belt pressing force of the cover sheet pressure conveyance belt 21 is reduced. The position becomes stronger (the operation time chart 4 in FIG. 9) in the state of positioning in the cover sheet vertical direction shown in FIG. In this state, when the control circuit rotates the cover sheet transport motor 22 forward by the numerical value input via the input means of the control circuit, the rear end of the cover sheet 17 is numerically input from the position of the cover top / bottom direction reference stopper 25. Move to a position that is a distance away. At this time, since the belt pressing force of the cover pressurizing and conveying belt 21 is in the strongest state, the cover pressurizing and conveying belt 21 and the cover 17 are not slipped, and the positioning accuracy can be increased.
Therefore, when adjusting the relative position of the main body and the cover in the vertical direction, the position for positioning the cover can be easily changed by appropriately changing the numerical value input via the input means of the control circuit.
[0020]
After that, as shown in FIG. 7, the main body 16 glued to the back surface sandwiched by the clamper 6 is positioned on the upper portion located between the nip plates of the nipping portion 5, and the nip plate and the bottom plate of the nipping portion 5 are slightly raised. The body 16 is put on the bottom plate between the nip plates with the cover 17 interposed therebetween, and the cover 17 is adhered to the back of the body 16 and the nip plate is moved almost simultaneously to tighten the vicinity of the edge of the back side of the body 16 from both sides. The cover sheet 17 is folded and nipping is performed. In synchronization with this nipping timing, the control circuit rotates the cam motor 24 and further rotates the state switching cam 23 by a predetermined angle, so that the state switching cam 23 pushes up the arm 27 and rotates the arm 27 around the rotation shaft 28. The arm cover pressurizing and conveying belt 21 is released from pressure (operation time chart 5 in FIG. 9).
The completed booklet is conveyed leftward by the clamper 6 and discharged as shown in FIG.
[0021]
In the above embodiment, two sets of the cover pressure conveying belt and the cover top / bottom direction reference stopper are provided. However, the number of cover cover top / bottom direction reference stoppers is not limited to two, and three or more sets can be provided. Although the raising / lowering of the stopper, the pressure release of the cover pressurizing and conveying belt, and the switching of the pressurizing force were performed, it can be performed by separate cam mechanisms. Furthermore, the cover positioning mechanism of the present invention can be used not only for a small bookbinding apparatus but also for a general bookbinding apparatus.
[0022]
【The invention's effect】
As described above in detail, according to the present invention, since the cover is positioned using the feed of the cover pressure conveying belt, the cover can be accurately positioned with respect to the covers of various sizes in the nipping portion. In addition, since manual adjustment of the guide is not required, it is possible to simplify the adjustment operation of the position for positioning the cover according to the change in the cover size. At the same time, since the fine adjustment operation for accurately shifting the cover in the vertical direction by a desired amount can be performed only by inputting a numerical value, the cover positioning mechanism can be easily automated. Further, it is not necessary to provide a guide in the direction of movement of the clamper after nipping, and a mechanism for escaping the guide is not required, so that the cost and speed of the bookbinding apparatus can be easily reduced.
[Brief description of the drawings]
FIG. 1 is a side view showing a cover positioning mechanism according to an embodiment of the present invention.
FIG. 2 is a top view of the cover positioning mechanism shown in FIG.
3 is a diagram illustrating an operation state of the cover positioning mechanism illustrated in FIG. 1 when a cover is supplied.
4 is a diagram showing a state when the cover positioning mechanism shown in FIG. 1 is positioned in the spine direction. FIG.
5 is a diagram showing a state when the cover of the cover positioning mechanism shown in FIG. 1 is abutted against a reference stopper. FIG.
6 is a diagram showing a state of the cover positioning mechanism shown in FIG. 1 when the cover is positioned in the vertical direction. FIG.
7 is a diagram showing a nipping state of the cover sheet positioning mechanism shown in FIG. 1; FIG.
8 is a diagram illustrating a booklet carry-out state of the cover positioning mechanism shown in FIG. 1. FIG.
9 is an operation time chart of the cover positioning mechanism shown in FIG. 1. FIG.
FIG. 10 is a diagram illustrating a schematic configuration of an example of a bookbinding apparatus.
FIG. 11 is an explanatory diagram illustrating a bookbinding process of the bookbinding apparatus in FIG. 10;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bookbinding apparatus 2 Clamp part 3 Milling part 4 Gluing part 5 Nipping part 6 Clamper 7 Movable clamp board 8 Fixed clamp board 9 Level board 10 Milling machine 11 Gluing machine 12, 13 Nip board 14 Bottom board 15 Leaf paper 16 Body 17 Cover 18 Back 21 Cover cover pressure conveyor belt 22 Cover sheet transport motor 23 Status switching cam 24 Cam motor 25 Cover sheet top and bottom direction reference stopper 26 Pressure spring 27 Arm 28 Rotating shaft 29 Cover sheet rear end detection sensor 30 Cover sheet back edge direction guide

Claims (3)

A front cover conveying belt, a cover positioning stopper that can be raised and lowered, and a control circuit that controls forward / reverse rotation of the front cover conveying belt and raising and lowering of the front cover positioning stopper. After driving the transport belt and feeding the cover, the cover positioning stopper is raised, the cover transport belt is driven in reverse rotation so that the rear end of the cover touches the cover positioning stopper. A cover positioning mechanism in a bookbinding apparatus, wherein the cover is controlled to be rotated to position the cover at a predetermined position.  The cover sheet positioning mechanism in the bookbinding apparatus according to claim 1, further comprising a cover sheet trailing edge detection sensor for detecting a trailing edge of the cover sheet.  2. A cover sheet positioning mechanism in a bookbinding apparatus according to claim 1, further comprising means for varying the pressure applied to the cover sheet conveying belt.

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