JPH0661498U - Blade receiving device for paper bundle punch - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] The present invention relates to a blade receiving device of a paper bundle punching machine in which a paper bundle is placed on a base and a cutting blade that moves up and down at a predetermined position punches the paper bundle. The purpose of this is to enable the use of substantially the entire surface of the blade receiving member and to eliminate the waste of the blade receiving member. [Structure] In a paper bundle punching machine in which a paper bundle is placed on a base, a paper stack is punched by a cutting blade that moves up and down at a predetermined position, and a blade receiving member is arranged on the base. An eccentric guide is rotatably disposed on the upper side, and a blade receiving member is rotatably attached to the eccentric guide so that the eccentric distance between the rotation center of the blade receiving member and the axis of the cutting blade can be changed. Blade receiving device for paper bundle punching machine.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a paper bundle perforator in which a paper bundle is placed on a base and is punched in the paper bundle by a cutting blade that moves up and down at a predetermined position, and a blade receiver for the cutting blade is arranged on the base. Regarding the blade receiving device of the machine.

[0002]

[Prior art]

 Conventionally, a punching machine in which a cylindrical cutting blade that is relatively close to and away from each other and a blade receiving member that is placed on the upper surface of the base are arranged, and the cutting blade and the blade receiving member are brought into proximity and contact to punch a sheet bundle. For example, Japanese Utility Model Laid-Open No. 58-18000 is known.

To describe in detail below, a rising portion 2 is erected and fixed on the upper surface of a base 1, and the rising portion 2 is vertically moved by the rotation of a lever 6 and has a drilling blade 9. A blade support member 7 is slidably arranged.

A blade receiving plate 10 is rotatably arranged around the screw 14 via a locking piece 11 below the boring blade 9 on the upper surface of the base 1. Further, the axis of the punching blade 9 and the center of rotation (screw 14) of the blade receiving plate 10 are arranged at eccentric positions so as not to be coaxial with each other.

Next, the usage method will be described. By rotating the lever 6, the punching blade 9 is lowered to punch the sheet bundle. Then, the tip of the punching blade 9 comes into contact with the blade receiving plate 10 and is slightly depressed to complete the punching of the sheet bundle. However, the surface of the abutting portion is flawed due to the repetition of the abutting operation of the punching blade 9 with the blade receiving plate 10. When this flaw becomes noticeable, it becomes impossible to perforate some of the lowermost sheets of the bundle of paper, or a notch is formed around the perforated hole. Therefore, by loosening the screw 14 and rotating the blade receiving plate 10, a new surface other than the flaw portion is used.

[0006]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, although both sides of the blade receiving plate 10 can be used, as shown in FIG. 8, since the center of rotation (female screw 14) is the center of the blade receiving plate 10, the blade receiving plate 10 is actually used. There is a problem that a lot of portions F that are not used as blade receivers are wasted compared to the portion E that is used as a blade receiver.

Although it is conceivable to form the blade receiving plate 10 itself in a small size in order to eliminate the wasted portion, that is, the portion B that is not used as the blade receiver, it is possible to reduce the portion A used as the blade receiver. It is not practical because it has decreased.

[0008]

[Means for Solving the Problems]

 The present invention aims to solve the above-mentioned problems, in which a sheet bundle is placed on a base, and the sheet bundle is perforated by a cutting blade that moves up and down at a predetermined position, and a blade receiving member is arranged on the base. In the paper bundle punching machine, the eccentric guide is rotatably mounted on the base, and the blade receiving member is rotatably attached to the eccentric guide. The feature is that the eccentric distance from the heart can be changed.

[0009]

【Example】

 1 to 4 show a first embodiment of the present invention. A support 2 is erected on the upper surface of the base 1. A pressing lever-3 is rotatably arranged around the rotary shaft 4 in the middle of the support body 2. A cam disk 5 is fixed to the intermediate portion of the rotary shaft 4. Further, one end of a link board 6 is rotatably attached to the cam board 5 by a pin 7.

On the other hand, the other end of the link board 6 is rotatably attached by a pin 9 to a slider 8 which moves straight up and down by a guide member (not shown) formed inside the support body 2. Further, a vertical hole 10 is formed in the slider 8 in the vertical direction, and a cutting blade 11 is fixed to the vertical hole 10 by a screw 12.

A sliding shaft fixing member 13 is fixed to the front surface of the slider 8 with a screw or the like, and a sliding shaft 14 is slidably arranged on the fixing member 13. A paper pressing board 15 is fixed to the lower end of the sliding shaft 14. The sliding shaft 14 is biased downward by an elastic member 16. A pressing plate 17 is arranged on the paper pressing plate 15 so as to be movable back and forth.

A positioning member 18 for positioning a hole to be drilled is arranged at the rear of the upper surface of the base 1 so as to be movable back and forth and fixed by a screw 19.

On the upper surface of the base 1, a slide base 20 on which a sheet bundle W is placed is arranged so as to be movable back and forth. Further, a movable width adjusting member 21 is arranged on the slide base 20 so as to match the lateral width of the punched sheet bundle.

Further, a guide groove 23 into which a rectangular eccentric guide 22 is fitted is formed at the rear of the upper surface of the base 1. A disk-shaped blade receiving member 24 is rotatably fitted and disposed behind the eccentric guide 22. Further, the blade receiving member 24 is arranged at an eccentric position so that the rotation center of the blade receiving member 24 and the axis of the cutting blade 11 are not coaxial.

Next, the usage method will be described. Initially, each time a flaw is formed on the surface of the blade receiving member 24, the blade receiving member 24 is rotated and a new portion is positioned in the same manner as in the prior art. Then, when the blade receiving member 24 makes one rotation, the eccentric guide 22 is rotated by 180 degrees. By the rotating operation of the eccentric guide 22, the lowering position 25 of the cutting blade 11 is located on the outer periphery of the used portion 24a (the flawed portion) (FIG. 3 → FIG. 4). When the blade receiving member 24 is rotated in this state, the outer periphery 24b of the previously used portion 24a can be used.

6 and 7 show a second embodiment of the present invention. A circular eccentric guide 25 may be used instead of the rectangular eccentric guide 22 of the first embodiment. More specifically, the eccentric guide 25 is rotatably fitted in the base 1, and the blade receiving member 24 is rotatably fitted in the eccentric guide 22. Further, the rotation center C of the eccentric guide 25 and the rotation center D of the blade receiving member 24 are set not at the same axis but at an eccentric position. Further, as in the above embodiment, the center of rotation C of the eccentric guide 25 and the centers of rotation C and D of the blade receiving member 24 are eccentric with the axis of the cutting blade 11.

The method of use and operation are substantially the same as those in the above-described embodiment, and therefore the description thereof will be omitted. However, since the rotation angle of the eccentric guide 25 can be arbitrarily set as compared with the above-described embodiment, a wider range of use is taken. Is possible.

[0018]

[Effect of device]

 According to the present invention, in a paper bundle punching machine in which a paper bundle is placed on a base, a paper stack is punched by a cutting blade that moves up and down at a predetermined position, and a blade receiving member is arranged on the base, The eccentric guide is rotatably mounted on the base, and the blade receiving member is rotatably attached to the eccentric guide to change the eccentric distance between the rotation center of the blade receiving member and the cutting blade axis. Since the blade receiving member has the same area as the conventional one, it is possible to use substantially the entire surface of the blade receiving member, and it is possible to eliminate the waste of the blade receiving member.

[Brief description of drawings]

FIG. 1 is an external perspective view of an entire paper bundle punching machine to which a first embodiment of the present invention is applied.

FIG. 2 is a front sectional view of FIG.

FIG. 3 is a plan view of a blade receiving portion of FIG.

FIG. 4 is a view obtained by rotating the eccentric guide of FIG. 3 by 180 °.

5 is a front sectional view of FIG.

FIG. 6 is a plan view of a blade receiving portion according to a second embodiment of the present invention.

FIG. 7 is a diagram when the eccentric guide of FIG. 6 is rotated 180 °.

FIG. 8 is a plan view of a conventional blade receiving portion.

[Explanation of symbols]

 1 pedestal 11 cutting blade W paper bundle 22 eccentric guide 24 blade receiving member 24a blade receiving portion used first 24b blade receiving portion used next A blade lowering position B blade receiving member rotation center C eccentric guide rotation center D Center of rotation of blade receiving member

Claims (1)

[Scope of utility model registration request] 1. A paper bundle punching machine in which a paper bundle is placed on a base, and the paper bundle is punched by a cutting blade that moves up and down at a predetermined position, and a blade receiving member is arranged on the base. An eccentric guide is rotatably disposed on a base, and a blade receiving member is rotatably attached to the eccentric guide, and an eccentric distance between a rotation center of the blade receiving member and an axis of a cutting blade can be changed. A blade receiving device for a paper bundle punch.