JPS61109693A - Top-bottom cutting method of intermediately bound book and cutter - 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 (Industrial Field of Application) The present invention provides a three-way bookbinding cutting process, particularly a saddle-stitched book binding cutting process, in which nine so-called top-bottom cutting sections are cut at both ends of the back of a saddle-stitched book. The present invention relates to a bookbinding cutting method and a cutting apparatus for preventing spine plucking and distortions in the appearance of the cutting finish.

(Prior art) When cutting a book saddle-stitched with a loosening machine, cutting the edges and 4 sides of the book from the top and bottom, conventionally, as shown in Fig. 2, cutting is performed using an upper blade that moves up and down and a lower blade that slides and is fixed. However, when cutting the top and bottom of a saddle-stitched book, the spine of the saddle-stitched book generally has a curved shape, and the curved surface of the back on the lower blade side is raised above the lower blade surface, making it look like leather. Not yet. Therefore, when the upper blade edge descends in this state and cuts both ends of the back, the curved part of the back is not fixed and is cut in an unstable state, resulting in damage to the cut, distortion, and other external appearance. This may result in a binding cut surface that does not look good.

(Objective) In order to solve the above-mentioned problems, the present invention provides a fixed lower blade of a top and bottom cutting blade in a saddle binding cutting process.

The purpose of the provision of the auxiliary catch blade is to cut the outer shape of the spine of a saddle-stitched book while holding it with the catch blade, thereby forming a clean cut surface with a good appearance.

(Structure) The present invention provides a cutting method in which the top and bottom of a saddle-stitched book are cut using a pair of upper blades that move up and down and a pair of sliding fixed lower blades. This is a method for cutting the top and bottom of a saddle-stitched book, characterized in that the cutting is carried out by contacting at least both ends of the spine with auxiliary receiving blades that match the shape of the spine.

To explain according to one embodiment of the apparatus used in the method of the present invention, as shown in FIG. 1, a pair of upper blades (1) (1) that move up and down,
A cutting device that cuts the top and bottom of the saddle-stitched book (4) is fixed by a pair of sliding fixed lower blades (2) (2) K on which both ends of the top and bottom of the saddle-stitched book (4) can be placed. Lower blade (2) (2) An auxiliary receiving blade (2) equipped with an equal shaped surface or curvature surface (6) on the upper side of the spine (5) of the saddle-stitched book (4) opposite to the lower blade (2) side. 3), and the receiving blade (3) is attached to the sliding end (8) of the fixed lower blade (2) or inwardly thereof with its sliding surface α. It is a device that cuts the top and bottom of a book.

(Function) To explain the method and apparatus of the present invention in detail, as shown in Fig. 1, a saddle-stitched book (4) is conveyed with its top and bottom placed on the fixed lower blades (2), (2) in the direction of the arrow. The lower curved part αB of the back part (5) of the binding book (4) is brought into contact with the curved surface (6) of the auxiliary receiving blade (3).

Stop the saddle stitch book (4) at this position, and move the movable upper blade (IHI)
) (1) is lowered, and the inner surface of the upper blade (1) (1) is brought into sliding contact with the outer sliding contact end (8) of the fixed lower blade (2) (2) to cut the upper and lower ends. Cut, do. Back of saddle stitched book (4) (5)
The curved portion αυ is in contact with the curved surface (6) of the receiving blade (3), and the back portion (5) does not move downward at the time of cutting. In this way, at least the top and bottom back parts (5) of the saddle-stitched book (4) are reliably supported by the lower blade (2) and the receiving blade (3), and while lowering the cutting edge of the upper blade (1), The inner surface of the cutting edge of the blade (1) is in sliding contact with the sliding contact end (8) of the lower blade (2) and the sliding contact surface a of the receiving blade (3), and is attached to both ends of the back (5) of the saddle-stitched book (4). It is possible to cut off the top and bottom.

To explain the device of the present invention in detail according to the drawings, the auxiliary receiving blade (3) in FIG.

For example, it is desirable to have a thickness of 1/2a.

It is provided with a shaped surface or curvature surface (6) equal to the outer shape surface or curved portion aυ of the spine (5) on either side of the front or back cover of the bound book (4), and furthermore, the outer side of the receiving blade (3) is Blade (1)
It is equipped with a sliding surface (II) on which the inner surface of the cutting edge slides.

FIG. 3 shows a saddle-stitched book (
4) Carry the fixed lower blade (2) in the direction of the arrow.

The curved portion αυ of the back portion (5) contacts the curved surface (6) of the receiving blade (3).

FIG. 4 is a front view of FIG. 3. Figure 5 (a) is a side view showing the state in which the auxiliary receiving blade (3) is attached to the fixed lower blade (2), and shows the upper surface (9) of the fixed lower blade (2), the screw (7)
) Fix by screwing from K. Figure 5 (b) shows the auxiliary catch blade (3)
is a front view of the receiving blade (3), when the receiving blade (3) is attached to the sliding contact end (8) of the fixed lower blade (2) with the sliding surface aυ of the receiving blade (3) aligned.

The sliding surface "αB" may be attached so as to be inside the sliding end (8). ' The position where the transported saddle-stitched book (4) stops on the fixed lower blade (2) is fixed, so it is installed with the receiving blade (3) fixed, but depending on the type of book, Since the curved shape of the back portion (5) changes depending on the size, it is possible to replace the receiving blade (3) with a curved surface (6) that adapts to the curved shape.

The receiving blade (3) of the device of the present invention can be attached to the lower blade of the vertical cutting blade of an automatic three-way cutting machine for saddle stitching. After cutting the bound book (4) from top to bottom, the book binding (4) can be transported in the direction of the arrow without any problem even if the curved surface (6) of the receiving blade (3) is highly inclined in the direction of travel. Bound books can be transported forward.

(Effect) According to the present invention, the auxiliary receiving blade (3) is attached on the fixed lower blade (2), and the back of the binding book (4) to be cut is attached to the curved portion (6) of the receiving blade (3). (5) Bring the curved surface αυ into contact with the back (5)
By eliminating the gap between the lower side and the lower blade (2), it is possible to prevent the back part (5) from moving downward due to the lowering of the upper blade (1). Since it can be held and cut at the top and bottom, it is possible to bind a book with no cutting distortion or peeling, and which has a clean top and bottom cut surface in appearance.

[Brief explanation of the drawing]

FIG. 1 is a perspective view illustrating the method of the present invention and the device used in the method, FIG. 2 is a side view illustrating a conventional example, FIG. 5 is a side view of the device of the present invention, and FIG. , a front view of the apparatus of the present invention, and FIGS. 5A and 5B are a partial side view and a front view of the apparatus of the present invention.

Claims (2)

[Claims] (1) In a cutting method in which the top and bottom of a saddle-stitched book are cut using a pair of movable upper blades that move up and down and a pair of sliding fixed lower blades, the back of the saddle-stitched book on the side opposite to the lower blade side is cut. A method for cutting the top and bottom of a saddle-stitched book, characterized in that the cutting is carried out by contacting at least both ends with an auxiliary receiving blade that matches the shape of the book. (2) A pair of movable upper blades (1) (1) that move up and down, and a pair of sliding lower blades (
2) On each of the lower blades (2) (2) of the cutting device that cuts the top and bottom of the saddle stitched book (4) according to (2), there is a saddle stitched book (4) on the side opposite to the lower blade (2). ) An auxiliary receiving blade (3) having an outer surface (6) having a shape and curvature that follows the back part (5) is fixedly provided or can be protruded and returned, and the sliding surface (10) of the receiving blade (3) is A device for cutting the top and bottom of a saddle-stitched book, characterized in that it is installed at or inside the sliding end (8) of the lower blade (2).