JP2007284158A - Wire binding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly detect a wire bound by a wire binding machine regardless of the size of paper by a simple constitution. <P>SOLUTION: In the wire binding machine, the wire binding machines A and B are arranged movably in a direction perpendicular to a conveying direction of a bundle of papers and are positioned in a direction perpendicular to the conveying direction according to a binding position of the bundle of papers and the bundle of papers is bound by the wire 5. A wire detector 19 for detecting the wire after binding at a position in a downstream side in the conveying direction of the bundle of papers is mounted to respective clinchers 12a, 12b opposed to each of stitching heads 11a, 11b of the wire binding machines A and B. Thereby, a movement mechanism required for change of the position of the wire detector 19 accompanying with change of the position of the wire binding machine is canceled and further, the wire after binding can be certainly detected regardless of change of the binding position of the bundle of papers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wire binding machine that binds a sheet bundle by bending a wire.

  It is a common practice to send a collated sheet bundle to a wire binding machine for wire binding. FIG. 3 is a diagram showing a schematic configuration of an example of such a wire binding apparatus. In FIG. 3, 1 is a collating machine, 2 is a stitch head of a wire binding machine, 3 is a clincher of a wire binding machine, 4 Is a wire reel of the wire binding machine, 5 is a wire guide, 6 is a folding knife of the folding machine, 7 is a pair of folding rollers of the folding machine, 8 is a cutting blade of the cutting machine, 9 is a feed roller, 10a and 10b are It is a receiving stand. A sheet bundle (not shown) collated by the collating machine 1 is conveyed to a wire binding machine and positioned so that the central portion of the sheet bundle is located at the tip of the stitch head 2.

  After the positioning is completed, the wire drawn in advance from the wire reel 4 through the wire guide 5 to the tip of the stitch head 2 is cut to a predetermined length, and the wire cut to the predetermined length is connected to both ends of the wire by the stitch head 2. The wire is lowered to the clincher 3 while being bent downward, the both ends of the wire bent by the lowering are pierced into the paper bundle, the both ends of the penetrated wire are bent inward by the clincher 3, and the paper bundle is bound. After binding, the sheet bundle is sent to the folding machine, and the wire binding position and the position of the folding knife 6 are aligned. After the positioning, the folding knife 6 is driven to push up the wire binding position and push between the pair of folding rollers to fold the sheet bundle and send it to the cutting machine. The folded sheet bundle sent to the cutting machine is positioned by aligning the cutting position with the position of the cutting blade 8. After the positioning, the cutting blade 8 is driven and cut, that is, the small edge portion of the bound sheet bundle is trimmed and fed to the feed roller 9 and discharged to the receiving table 10a or 10b.

In the wire binding apparatus configured as described above, the sheet bundle may not be bound correctly even when the stitch head 2 of the wire binding machine is driven due to a failure in feeding the wire 5 or the like. In this case, a sheet bundle that is not normally bound is discharged as a normally bound sheet, and defective products are mixed with non-defective products. In order to avoid this, if a wire detector is placed in the paper bundle carry-out path after binding and this detector does not detect the wire, the wire binding apparatus is stopped and the unbound paper bundle is taken out from the conveyance path. After maintaining the wire binding machine, the wire binding apparatus is restarted.
JP 2005-112523 A

  By the way, in the case of a wire binding machine that is directly connected to the collating machine, paper bundles having different sizes in the direction orthogonal to the paper transport direction are sent to the wire binding machine. When the paper sizes are different in this way, the wire binding position is also different depending on the paper size, and the position of the wire detector arranged in the paper bundle carrying-out path is also changed. However, this change is troublesome, and a dedicated mechanism for moving the wire detector is also required, resulting in a complicated mechanism for the wire binding apparatus.

  The problem to be solved by the present invention is to make it possible to reliably detect a wire bound by a wire binding machine with a simple configuration regardless of the size of the paper, and to solve such a problem.

  The present invention has a stitch head that is bent and supplied with both ends of a wire having a predetermined length downward, and a clincher that is arranged opposite to the stitch head and that bends both ends of the wire bent downward. And the both ends of the pierced wire are pierced through the ends of the wire that is bent downward by the clamping pressure between the stitch head and the clincher. In the wire binding machine, the wire detector for detecting the wire after binding is attached to the clincher.

  In the present invention, since the wire detector for detecting the wire after binding is attached to the clincher paired with the stitch head of the wire binding machine, the wire detector moves with the movement of the wire binding machine, and the binding position is changed. However, there is no need for a dedicated mechanism for changing the position of the wire detector, and there is no need to change the position of the wire detector.

  A wire detector that detects the wire after binding to the clincher that is paired with the stitch head of the wire binding machine for the purpose of reliably detecting the wire bound by the wire binding machine with a simple configuration regardless of the paper size. Realized by attaching.

  An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a perspective view showing a configuration of a wire binding machine arranged in a sheet bundle conveyance path according to an embodiment of the present invention. In FIG. 1, 11a is a stitch head of the wire binding machine A, 11b is a stitch head of the wire binding machine B, 12a is a clincher of the wire binding machine A, 12b is a clincher of the wire binding machine B, and 13a is a stitch of the wire binding machine A. The head support block, 13b is a stitch head support block of the wire binding machine B, 14a is a clincher support block of the wire binding machine A, 14b is a clincher support block of the wire binding machine B, and 15a is a stitch head of the wire binding machine A that also serves as a guide. 15b is a stitch head feed screw of the wire binding machine B that also serves as a guide, 16a is a clincher feed screw of the wire binding machine A that is also used as a guide, 16b is a clincher feed screw of the wire binding machine B that is also used as a guide, and 17 is a wire binding. A motor for rotationally driving the stitch head feed screw 15a of the machine A, 18 is a clamp of the wire binding machine A Motor for rotating the Pichincha feed screw 16a, 19 is a wire detector. Note that a motor for rotationally driving the stitch head feed screw and the clincher feed screw of the wire binding machine B is not shown.

  The stitch head 11a is fixed to a support block 13a. The support block 13a is screwed with a feed screw 15a serving as a guide, and the feed screw 15a serving as a guide and a feed screw 15b serving as a guide are inserted. The feed screw 15a is connected to the rotating shaft of the motor 17, the rotation of the motor 17 causes the feed screw 15a to rotate, and the support block 13a moves linearly along the feed screw 15a and the feed screw 15b. Move straight. The clincher 12a is similarly fixed to the support block 14a. The support block 14a is screwed with the feed screw 16a, and the guide / feed screw 16a and the guide / feed screw 16b are inserted. The feed screw 16a is connected to the rotating shaft of the motor 18, and the feed screw 16a is rotated by the rotation of the motor 18. The support block 14a is connected to the support block 13a along the guide / feed screw 16a and the guide / feed screw 16b. The clincher 12a moves linearly opposite to the stitch head 11a.

  In this embodiment, the feed screws 15a, 15b and 16a, 16b, which are also used as guides, are arranged in parallel to the direction perpendicular to the conveying direction of the sheet bundle, and there are two AB binding machines composed of a stitch head and a clincher pair. The two wire binding machines can be positioned by moving in the direction perpendicular to the sheet bundle conveying direction by the rotation of the motors connected to the respective feed screws, as shown in FIG. The distance between each other can be reduced at an appropriate position. The feed screws 15b and 16b serving also as guides may be used as guide rods, and the distance between the wire binding machine A and the wire binding machine B may be narrowed or widened by the rotation of the motors 17 and 18.

  The wire detector 19 is attached to the downstream side in the sheet bundle conveyance direction of the clincher support blocks 14a and 14b of both the wire binding machines AB, and moves with the movement of the clincher support blocks 14a and 14b. That is, the bound wire can be detected regardless of the position in which the wire binding machine AB is moved and positioned in the direction orthogonal to the conveyance direction of the sheet bundle. The positioning of the wire binding machine AB in the direction perpendicular to the conveyance direction of the sheet bundle is automatically set according to the size of the sheet bundle carried out from the collating machine, and at the same time, the position of the wire detector 19 is set. Is automatically set, and the binding process can be continuously performed even when the size of the sheet bundle carried out from the collating machine is changed.

It is a perspective view which shows the structure of the wire binding machine arrange | positioned in the conveyance path of the paper bundle which concerns on the Example of this invention. It is a perspective view for operation | movement description of the wire binding machine shown in FIG. It is a schematic side view which shows the structure of a saddle stitch folding machine.

Explanation of symbols

A, B Wire binding machine 5 Wire guides 11a, 11b Stitch heads 12a, 12b Clinchers 13a, 13b Stitch head support blocks 14a, 14b Clincher support blocks 15a, 15b Stitch head feed screws 16a, 16b serving as guides Clincher feed screws serving as guides 17, 18 Motor 19 Wire detector

Claims (1)

  The stitch head includes a stitch head that is bent and supplied at both ends of a predetermined length of wire, and a clincher that is arranged to face the stitch head and bends both ends of the wire bent downward. A sheet bundle positioned between the head and the clincher is pierced through the end of the wire bent downward by the clamping pressure between the stitch head and the clincher, and both ends of the pierced wire are bent inward. A wire binding machine for binding a wire, wherein a wire detector for detecting a wire after binding is attached to the clincher.

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