JPH0350676B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work to be cut, specifically, a work to be cut at the time of edge cutting in three-way cutting of saddle stitch binding, flat binding, thread binding, paper board, synthetic resin board, etc. This invention relates to a stopper device.

Conventionally, when trimming the edges of bound books such as saddle-stitched books and flat-stitched books after top-to-bottom cutting has been completed, the back of the bound book being conveyed is brought into contact with a stopper that enters and exits the conveying surface from the bottom of the conveying body. The upper and lower blades were used to cut the book while binding was temporarily stopped. Since the stopper is configured to operate in synchronization with the raising and lowering action of the upper blade support, it goes without saying that the continuous mechanism is complicated, and especially when it comes to edge cutting, Since the upper and lower blades for edge cutting, which are installed perpendicular to the conveyance flow path, are in fixed positions, the stopper is moved back and forth depending on the edge width of the object to be cut, and the blade and stopper positions are adjusted. It is necessary to adapt the distance between them to a predetermined edge width. Placing the stoppers in the front and rear positions in this way further complicates the mechanism, which causes problems such as frequent failures due to the large number of parts and an unavoidable increase in costs.

The present invention has been made in view of the above circumstances, and uses simple and rational means, specifically, adjusting the action timing of the stopper by adjusting the length of the action cam surface of the drive cam. The problems of the prior art are solved by adjusting the movement of the stopper in the horizontal direction, that is, along the conveyance direction of the material to be cut, in accordance with the edge width.
The object of the present invention is to provide a stopper device that is easier to handle, more accurate in stopper operation, and significantly reduced in cost.

Embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view of a bookbinding apparatus using saddle stitch binding as an example of an object to be cut, and FIG. 2 is a partially cutaway side view of the main part of the present invention, specifically, a stopper device.

In FIG. 1, A is a rotary leaf feeder for signatures, B is a stitcher for saddle stitching that is connected to the lower side of the rotary leaf feeder A, C is a top-bottom cutting section C ₁ for the saddle-stitched bound book, This is a three-sided cutting machine in which edge cutting sections _C2 are arranged one after the other. Figure 2 shows the contact with the spine of a book during edge trimming of a saddle-stitched book;
A stopper device for temporarily stopping this will be shown, and an embodiment thereof will be described below. Reference numeral 1 denotes a mounting table installed in the edge cutting section C ₂ of the three-way cutting machine c;
A lower blade 3 is attached to the front end of the booklet 2, which is slanted in a direction perpendicular to the direction in which the bookbinding 2 is transported. Further, reference numeral 4 denotes an upper blade which can be raised and lowered and which is attached to an upper blade support stand 5. The upper blade 4 and the lower blade 3 cut the edge of the bound book 2 carried onto the mounting table 1. .

Reference numeral 6 denotes at least two horizontal rods arranged vertically movably above the above-mentioned table 1. As is clear from the figure, the horizontal rods 6 are provided parallel to the conveyance direction of the bookbinding 2. For Rod 6,
A stopper 7 that comes into contact with the back of the bookbinding 2 to temporarily stop the bookbinding 2 is slidably fixed. The lower end of this horizontal rod 6 is fixed to the upper end of a vertical rod 9 provided along the guide member 8 provided on the rear surface of the above-mentioned table 1, and as the vertical rod 9 moves up and down, the horizontal rod 6 The horizontal rod 6 moves up and down and maintains its descending position.
The conveyance of the bound book 2 is prevented by a stopper 7 attached thereto.

Reference numeral 10 denotes a drive cam that is driven in conjunction with or in synchronization with the vertical movement of the upper blade support 5. The drive cam 10 is driven by at least two slide cams 11a and 11b having the same shape. By rotating either slide cam 11a, 11b, the total cam surface length of both slide cams 11a, 11b is calculated from the length of one cam surface to the length of two cam surfaces. The length of the lever 12 is adjusted within a range of length, and a rolling wheel 13 provided at one end of a lever 12 whose midway portion is pivotally supported on the machine frame comes into contact with this cam surface. That is, the slide cam 11a,
The roller 13 contacts the circumferential surface of the lever 11b so as to be pressed from above, and the other end of the lever 12 is connected to the lower end of the vertical rod 9.
The total weight of the vertical rod 9 and the horizontal rod 6 is applied to the other end, and this load gives the lever 12 a turning habit, but this turning habit is caused by sliding through the wheels 13. When the roller 13 is pushed downward by the cam surface, the vertical rod 9 and the horizontal rod 6, specifically the stopper 7, are retracted upward to complete the bookbinding process. When the roller 13 comes off the cam surface, the horizontal rod 6 and the vertical rod 9 are lowered by their own weight, and the stopper 7 is brought close to or in contact with the surface of the platform 1. At this position, the back of the bookbinding 2 is received and the bookbinding 2 is temporarily stopped. Simultaneously with this stop, the upper blade 4 descends, and in cooperation with the lower blade 3, the edge of the bound book 2 is cut.

Next, the adjustment means of the present invention when the edge width of the bookbinding 2 changes in size will be explained. Since the set positions of the upper blade 4 and lower blade 3 are fixed, the stopper 7
need to be moved. Therefore, when the edge width is small, it is necessary to move the stopper 7 to the left in the paper of FIG. 2 for adjustment, and to lower the stopper 7 quickly because the edge width is small. Therefore, in the present invention, the slide cams 11a, 1
1b is slid and rotated to shorten the working cam surface, and the horizontal rod 6, that is, the stopper 7, is lowered quickly to stop the bookbinding 2 with a small edge width.

In addition, when the edge width of the bookbinding 2 is large, the stopper 7 is moved to the right in the paper, and the slide cams 11a and 11b are opened to form a long working cam surface, and the horizontal rod 6, that is, the stopper 7 is kept in the ascending position. Take a long time so that the bookbinding 2 can penetrate deep into the book.

Therefore, a scale 14 corresponding to the bookbinding edge width is attached to the horizontal rod 6, and a stopper 7 is attached to this scale 14.
On the other hand, a scale plate (not shown) for determining the working cam surface length corresponding to this edge width is attached to the shaft of the drive cam 10, and the working cam surface length is determined by this scale plate. By determining this and positioning the stopper 7, edge cutting of a book of a predetermined edge width can be performed continuously.

In addition, 9a in the figure indicates another vertical rod (not shown),
This is a connecting plate that is connected to the vertical rod 9 shown in the figure and can be moved up and down simultaneously by the movement of the lever 12.

As described above, according to the present invention, the length of the working cam surface of the drive cam is adjusted in accordance with the edge width of the bookbinding, the timing at which bookbinding is stopped by the stopper is adjusted, and the movement of the stopper is adjusted in accordance with the edge width of the bookbinding. This method solves the problems of the conventional technology, and has the advantage of simplifying the structure, simplifying handling, stopping binding, and making it possible to cut more accurately.It also has the advantage of being highly economical. be.

[Brief explanation of drawings]

FIG. 1 is a plan view of a bookbinding device comprising a saddle stitching device and a three-way cutter, and FIG. 2 is a partially cutaway side view showing the main structure of the present invention. A... Rotary feeder, B... Stitcher, C... Three side cutting machine, C ₁ ... Top and bottom cutting section,
C ₂ ... Edge cutting section, 1 ... Bookbinding transport platform, 2
...Bookbinding, 3...Lower blade, 4...Upper blade, 5...Upper blade support, 6...Horizontal rod, 7...Stopper,
8... Guide member, 9... Vertical rod, 10... Drive cam, 11a, 11b... Slide cam, 12
...Lever, 13...Rotary wheel, 14...Scale.

Claims (1)

[Claims] 1 Guide the object to be cut, such as book binding or paperboard, to a three-sided cutting machine to cut the top and bottom of the object, then guide the object to the edge cutting section and temporarily stop it at the stopper, and transport the object to be cut. An upper blade attached to a support base that can be raised and lowered and placed perpendicular to the flow path;
In a device that cuts the edges of the object to be cut using a lower blade fixed to a lower blade mounting base, a device is installed above the object to be cut table placed on the lower side of the lower blade, in contact with the back of the object to be cut. A stopper member for regulating the position of the lever is slidably fixed in accordance with the width of the edge of the material to be cut, and a horizontal rod parallel to the transport direction of the material to be cut is disposed so as to be movable up and down. The lower end of the rod is tied to the upper end of a vertical rod that can be raised and lowered, and the vertical rod is held in a raised position by a drive cam with a variable operating cam surface length at the lower end of the vertical rod. The sliding end of the lever that operates as the object is connected is connected to adjust the timing at which the stopper contacts the back of the object to be cut and temporarily stops it, depending on the width of the edge of the object to be cut. Stopper device for edge cutting in three-way cutting.