JPH0720295U - Punching device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a large-scale point of a conventional punching device, a point that a thick one cannot be punched, and a simple and easy-to-use punching device independent of other devices. answer. [Structure] A cylindrical perforating blade 3 having a scraper rod 2 capable of advancing and retracting is provided inside an upper blade body 1 that moves up and down, and a biasing spring for the scraper rod 2 in the scrap removing direction is provided. 4 is a punching device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a punching device for making binding holes in printed matter, books, and the like.

[0002]

[Prior art]

 A conventional punching device for punching a binding hole is generally of a type in which a cylindrical punching blade having a scrap removal hole inside is pressed against a wooden or fiber-reinforced resin object called Jojo to punch a book or the like. Met. Some punching machines rotate the cylindrical punching blade to accommodate thick materials such as books, but in any case, the punched scrap passes through the scrap punched hole of the punch and the upper part It moves to the outside (outward direction) and goes out through the discharge hole provided in the hole blade attachment part. In addition, there is also used a structure in which a suction device is connected to the discharge hole to forcibly suck up the scraps and discharge them to the outside in order to collect the scraps.

[0003]

[Problems to be solved by the device]

 The conventional punching device having a structure in which the scraps are forcibly sucked up and taken out to the outside has a drawback that the device becomes large in size. This also applies to the type in which the boring blade is rotated. Also, when attempting to punch a binding hole in a book or the like at high speed with a conventional device, a method is used in which a punching blade with a dented tip is pressed against the book to cut it, and it is possible to punch at high speed. It was not possible for thick ones, and the thickness of books, etc. could be punched only up to about 5 mm. When trying to solve the problem that thick holes cannot be perforated with a type in which the perforation blade is rotated, conversely, it takes time to perforate one and there is a problem in efficiency. Further, as a punching device, there is a great demand for providing a simple and convenient punching device independent of other devices.

[0004]

[Means for Solving the Problems]

 Therefore, a cylindrical perforating blade 3 having a scrap removing rod 2 capable of advancing and retracting inside is provided for an upper blade body 1 that moves up and down, and an urging spring in the scrap removing direction with respect to the scrap removing rod 2 is provided. The above-mentioned problem was solved by developing a punching device characterized in that the number 4 is provided.

In this device, the boring blade 3 attached to the upper blade body 1 is screwed into the upper portion of the boring blade 3 with respect to the female screw provided inside the upper blade body 1, and an adjusting screw is attached to the upper portion. Those provided are preferable.

Further, the biasing spring 4 provided in the scrap removing rod 2 in the scrap removing direction is preferably a coil spring interposed between the mounting boss of the scrap removing rod 2 and the upper blade body.

Further, when a guide plate having a through hole slightly larger than the outer diameter of the punching blade is provided between the upper blade body 1 and the drilling object, the punching blade is prevented from being shaken and the lower side is lowered. It is preferable to prevent wear (including uneven wear) of the die provided in the above by the punching blade.

[0008]

[Action]

 According to the device of the present invention, when the punching blade 3 that moves up and down moves downward to punch a binding hole in a book or the like, the biasing spring 4 of the scrap removal rod 2 receives a force in a direction opposite to the scrap removal direction. Among them, the prevailing spring force causes the scrap removing rod 3 to descend in the cylinder of the punching blade 3 to forcibly push the scraps downward from the punching blade 3.

[0009]

【Example】

 FIG. 1 is a partially cutaway front view of the punching device of the present invention. FIG. 2 is an enlarged view of the main part when punching, and FIG. 3 is a side view when not punching. This punching device is suitable for continuously and automatically opening binding holes for books of about 1 to 10 mm. When drilling multiple holes at a time, install the required number of holes in parallel. Further, by equipping it near a three-way cutting device that cuts a book on three sides, the binding holes can be punched in synchronization with the cutting.

The upper blade body 1 is, so to speak, a mounting base for the punching blade 3 and has a block shape. The upper blade body 1 is lowered during drilling by the vertical movement of a support frame 5 for the body by vertical movement means such as a lower crank or cam (not shown), and is raised when drilling is completed. The support frame 5 has a linear guide 12 having a rail groove on its side surface, and moves up and down along a rail 13 provided in the vertical direction of the apparatus body. Between the upper blade body 1 and the object to be drilled 20, there is a guide plate 6 having a through hole slightly larger than the outer diameter of the hole to be drilled. There is a die 7 with a close gap. The die 7 has a drop hole 7a through which the punch residue is pulled out.

Details of the punching blade 3, the scrap removing rod 2, and the biasing spring 4 can be seen in FIGS. The piercing blade 3 has a blade at the tip of a tubular shape, and the upper end is set by a setscrew 11 screwed into a female screw hole provided in the lateral direction of the small diameter portion 1a of the stepped hole provided inside the upper blade body 1. Is fixed. Further, an adjusting screw 8 is provided on the upper part for adjusting the insertion of the punching blade 3. With such a structure, the punching blade 3 moves integrally with the vertical movement of the upper blade body 1.

The scrap removal rod 2 provided inside the drilling blade 3 so as to be capable of advancing and retracting independently of the drilling blade 3 is loosely inserted into the large diameter portion 1b of the stepped hole provided inside the upper blade body 1. The upper end is screwed onto the scrap removal rod mounting boss 9. Since the screw structure is used for fixing, it is possible to adjust the tip of the drilling blade 3 so that the tip thereof slightly protrudes from the tip blade of the punching blade 3 in the most lowered state during scrap removal. In this case, the biasing spring 4 provided in the dust removing rod 2 in the dust removing direction is a coil spring, and is a large diameter portion 1b of the stepped hole at the uppermost portion of the attachment boss 9 of the dust removing rod 2 and the upper blade body. Is interposed between the upper pads 10 of the body provided so as to close the. Since there is the mounting boss 9 in the stepped hole, the protrusion of the scrap removal rod 2 is further restricted at the stepped portion.

When the piercing blade 3 pierces a book or the like, the scrap removal rod 2 descends more than the descending distance of the piercing blade 3, and the tip protrudes from the piercing blade 1 as shown in FIG. Push out. When the replacement of the book to be punched at a high speed and the vertical movement means are synchronized with each other, every time the punching blade 3 punches a binding hole in the book or the like, the scrap punch 2 pulls the scraps from the punching blade 3 to the die. Push down through the drop hole. This repetition can be automatically performed at high speed.

[0014]

[Effect of device]

 The binding hole punching device of the present invention has a structure as described above, and thus is more compact than a device provided with a conventional device for forcibly sucking and removing scraps, and the thickness of a book or the like is reduced. Even if it is several times thicker than the conventional one, it is possible to punch at high speed without clogging of the punching blade inside the cylinder. Further, since all the operations are performed only by the vertical movement, the rotation speed of the drive source can be increased. As a result, by installing it together with a three-way cutting device that operates at high speeds, it is possible to punch binding holes at the same time as cutting and improve efficiency. In addition, since the piercing blade does not hit the fixed tree but enters the falling hole of the die etc., wear is less and durability is improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a binding hole punching device of the present invention when punching.

FIG. 2 is a front view of the same device.

FIG. 3 is a partially cutaway side schematic view of the same device before drilling.

[Explanation of symbols]

 1 Upper Blade Body 2 Dust Removal Rod 3 Drilling Blade 4 Biasing Spring 5 Support Frame 6 Guide Plate 7 Die 8 Adjustment Screw 9 Dust Removal Rod Installation Boss

Claims (1)

[Scope of utility model registration request] 1. A cylindrical perforating blade 3 having a scrap removing rod 2 capable of advancing and retracting therein is provided on an upper blade body 1 which moves up and down, and is attached to the scrap removing rod 2 in a scrap removing direction. A perforating device having a biasing spring 4.