KR20100027453A - Punching apparatus - Google Patents

Abstract

PURPOSE: A punching apparatus is provided to prevent overload of a driving source by lifting punching members with a phase difference using a biasing member. CONSTITUTION: A punching apparatus(100) comprises punching members(151,152,153), upper and lower frames(160,170), guiders(141,142,143), a shaft(110), a biasing member(132), and a driving source(120). The upper frame has a guide hole(161) guiding the punching members. The lower frame has a punching hole(171) through which the punching members pass. The punching member is connected to the outer circumference of the guider of hollow pipe shape. The shaft is inserted into the guiders. The biasing member is rotated along with the shaft to raise the guiders. The driving source rotates the shaft.

Description

Punching Equipment {PUNCHING APPARATUS}

The present invention relates to a punching device, and more particularly, to a punching device capable of continuously punching the feeder to be supplied.

When feeders, such as copied or printed sheets, are fed, holes must be formed in the feeders, through which they are fed. With the recent development of office equipment, the copied sheets are automatically punched out by the punching device installed in the office equipment.

Japanese Patent Laid-Open No. 3-228598 discloses a device for drilling a feeder to make a hole for drilling, which device comprises (a) a cam shaft and a plurality of cams fixed to the cam shaft at predetermined intervals. Cam assembly; (b) an elongate support having a U-shaped cross section, a plurality of punches slidably supported by the U-shaped support, and a U-shaped to deflect the punch toward the inside of the U-shaped support; A punch assembly comprising springs disposed between the inner surface of the support of the support and the stopper of the punch; (c) each includes a punch die having die holes clear with each punch. This conventional sheet material punching device is configured in equal numbers so that the punch and the cam are connected one-to-one.

When driving means such as cams and punches are used in the same number as in the above conventional drilling device, there is a problem that a very large number of parts are required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a punching device capable of continuously punching the feeder to be supplied.

In order to solve the above technical problem, the punching device according to the present invention comprises a punching member for punching a feeder; An upper frame having a guide hole for guiding the punching member; A lower frame positioned below the upper frame and having a punching hole through which the punching member penetrates; A hollow tube, the puncher having a puncher connected to an outer circumference; A shaft inserted into the guider; An eccentric member mounted to an outer circumference of the shaft to lift the guider by rotating together with the shaft; And a driving source for rotating the shaft.

In addition, the punching member may be provided in plurality.

The upper frame may further include a guide portion extending upward from the guide hole to guide the lifting and lowering of the punching member.

In addition, the guider is provided in the same number as the plurality of punching members, it is preferable that the plurality of the guider and the punching member is connected one to one, respectively.

In addition, the eccentric member is provided in the same number as the plurality of guiders, it is preferable that the plurality of the eccentric members are each lifting the guider.

In addition, the eccentric member is preferably a blade protruding on one side of the outer periphery of the shaft.

In addition, the blade is preferably formed integrally with the shaft.

In addition, the blade is preferably formed after being separated from the shaft.

In addition, the blade tube is inserted into and adhered to the outer periphery of the shaft, it is preferable that the blade is formed on the outer periphery of the blade tube.

In addition, the blade is preferably formed so as not to be parallel to the central axis of the shaft, the plurality of punching members are preferably lifted with a phase difference.

In addition, the eccentric member is preferably an eccentric cam mounted on the outer periphery of the shaft.

In addition, the eccentric cam is preferably formed to have a phase difference for each position in the longitudinal direction during the rotation of the shaft.

According to the present invention, there is an effect that can continuously punch the feeder to be supplied.

In particular, since the eccentric member lifts a plurality of punching members with a phase difference, it is possible to prevent an overload of the driving source.

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the embodiment according to the present invention.

1 to 3, a first embodiment 100 according to the present invention includes a drive source 120, a shaft 110 that rotates with a drive force of the drive source, a blade 132 that is an eccentric member, and a guider. 141, 142, 143, punching members 151, 152, 153, upper frame 160, and lower frame 170.

The blade tube 131 is inserted into and adhered to the outer circumference of the shaft 110, and the blade 132 is integrally formed at the outer circumference of the blade tube 131. In particular, it can be seen that the blade 132 is formed to be inclined at a predetermined angle and not parallel to the central axis t1 of the shaft 110. It is preferable that the inclination angle is 5 to 40 degrees.

It can be seen that the outer periphery of the shaft 110 is provided with three hollow guiders 141, 142, 143. Punching members 151, 152 and 153 are coupled to the guiders 141, 142 and 143 by pins 141a, respectively.

In addition, the upper frame 160 and the lower frame 170 is formed with a guide hole 161 and a punching hole 171 through which the punching members 151, 152, 153 penetrate. It is supplied between the 160 and the lower frame 170. Therefore, the guide hole 161 and the punching hole 171 is located on the same vertical line.

4 and 5A to 5C, when the shaft 110 is rotated using the driving source 120 while a feeder is supplied between the upper frame 160 and the lower frame 170, the blade ( 132 rotates to act on the inner walls of the guiders 141, 142, 143 to elevate the punching members 151, 152, 153, and when descending, the punching members 151, 152, 153 penetrate the feeder while penetrating the guide hole 161 and the punching hole 171. Will be done.

In particular, the three punching members 151, 152, 153 are lifted with a phase difference by forming the blade 132 so as not to be parallel to the central axis of the shaft 110. Accordingly, the three punching members 151, 152, and 153 are not punched at the same time but sequentially punched.

In more detail, when the section of the blade 132 corresponding to the first guider 141 becomes the bottom dead center, the first guider 141 and the first punching member 151 are lowered to drill the tributary ( See FIG. 5A)

At this time, the section of the blade corresponding to the second guider 142 is located between the bottom dead center and the top dead center, so that the second punching member 152 does not rise or fall (see FIG. 5B).

Meanwhile, the section of the blade corresponding to the third guider 143 becomes a top dead center, and the third guider 143 and the third punching member 153 are raised.

When the shaft 110 is rotated by the driving source 120, the first punching member 151 is raised to return to its original position, and the second punching member 152 is lowered to punch the feeder and the third punching member. 153 descends and returns to its original position.

By repeating such an operation, the perforations are sequentially performed. As described above, the plurality of punching members do not simultaneously puncture, but sequentially punctures to prevent overload of the driving source.

6 shows a second embodiment 200 according to the present invention. As shown, although the punching member is three, it can be seen that the guider 240 is formed as one. That is, three punching members are connected to one guider 240. The other configuration is the same as in the first embodiment.

7 and 8 show a third embodiment 300 according to the present invention. As shown, the eccentric cam 332 is mounted in place of the blade as the eccentric member. It can be seen that the eccentric cam 332 is also inclined to have a phase difference for each position in the longitudinal direction when the shaft 310 is rotated. The other configuration is the same as in the first embodiment.

On the other hand, the present embodiment is composed of one blade or the eccentric cam extending in the longitudinal direction as the eccentric member, alternatively may be configured in the same number with each guider. Therefore, each eccentric member is located inside each guider.

The blade may also be formed directly on the shaft without a blade tube. In this case, the blade may be integrally formed on the shaft, or otherwise formed separately, and then may be coupled by a screw coupling method.

1 and 2 are a perspective view and an exploded perspective view of a first embodiment according to the present invention.

3 is an essential part perspective view of the first embodiment.

4 is an operating state diagram of the first embodiment.

5A is a cross-sectional view taken along the line A-A of FIG. 4, FIG. 5B is a cross-sectional view taken along the line B-B, and FIG. 5C is a cross-sectional view taken along the line C-C.

6 is a second embodiment according to the present invention.

7 and 8 are a third embodiment according to the present invention.

Claims (12)

A punching member for punching the feeder; An upper frame having a guide hole for guiding the punching member; A lower frame positioned below the upper frame and having a punching hole through which the punching member penetrates; A hollow tube, the puncher having a puncher connected to an outer circumference; A shaft inserted into the guider; An eccentric member mounted to an outer circumference of the shaft to lift the guider by rotating together with the shaft; And Punching device comprising a; drive source for rotating the shaft. The method of claim 1, Punching device, characterized in that provided with a plurality of punching members. The method of claim 1, And the upper frame further comprises a guide part extending upwardly from the guide hole to guide the lifting and lowering of the punching member. The method of claim 2, The guider is provided with the same number as the plurality of punching members, a plurality of the guider and the punching member is characterized in that the punching device is connected one to one. The method of claim 4, wherein The eccentric member is provided with the same number as the plurality of guiders, a plurality of the eccentric member is punching device, characterized in that each lifting the guider. The method of claim 2, The eccentric member is a punching device, characterized in that the blade protruding on one side of the outer periphery of the shaft. The method of claim 6, And the blade is integrally formed with the shaft. The method of claim 6, And the blade is separated from the shaft and then coupled. The method of claim 6, Punching apparatus, characterized in that the blade tube is inserted into the outer periphery of the shaft, the close contact is further provided, the blade is formed on the outer periphery of the blade tube. The method of claim 6, And the blade is formed so as not to be parallel to the central axis of the shaft, and the plurality of punching members are lifted with a phase difference. The method of claim 2, And the eccentric member is an eccentric cam mounted on an outer circumference of the shaft. The method of claim 11, The eccentric cam is punching device, characterized in that formed to have a phase difference for each position in the longitudinal direction during the rotation of the shaft.

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