JP2006051565A - Sheet punching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper sheet punching device capable of making holding-down of paper sheet as a preliminary step to the punching operation, executing the punching operation efficiently, and precluding a wasteful consumption of the electric power by allowing a punching rod to sink together with the descent of a sheet hold-down piece for holding down the sheet. <P>SOLUTION: A pulley 2 working in linkage with a drive motor is mounted on the device body 1, and a key 5 provided on the inside of the pulley is fitted slidingly in a key seat 6, and a spindle 4 is installed longitudinally in the device body rotatably. The spindle is furnished with male threads 7, which are engaged with a threaded hole formed in a supporting board 8 holding a sheet hold-down frame 13 suspendedly, and the spindle is mounted on the supporting board and is furnished at the bottom with the punching rod 10 to punch off the sheet held down by the hold-down piece 13a of the frame 13. In line with the spindle, a shaft 15 is installed longitudinally in the device body, and a means to separate a pinch edge 16a from an engaging groove 15a is installed on the supporting board. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric paper sheet punching device.

  A pulley connected to the drive motor is provided on the base, and a key groove is slidably fitted on a key provided on the pulley so that the main shaft is vertically rotatable on the base, and the main shaft is provided with a punching rod at the lower end. The male screw provided is screwed into a screw cylinder provided on the base, and a paper presser is attached to a support rod suspended from a lifting block provided on the main shaft, and a spring wound around the support rod is attached to the base and the base. There exists a thing of the structure interposed between the raising / lowering block (for example, patent document 1).

  In this structure, the rotational force of the motor linked via the pulley is transmitted to the main shaft by the engagement relationship between the key and the key groove, and the propulsive force necessary for the drilling operation is transmitted together with this rotational force between the male screw and the screw cylinder. It is obtained by a screwing relationship, and the paper presser is lowered and pressed against the paper sheet at the same time as the punching rod that descends in the paper sheet direction during the punching operation.

JP-A-8-290398

  Since the conventional example has a structure in which the paper presser and the punch punch are simultaneously lowered during the punching operation, the punching operation with the punch presser is performed before the paper presser can completely hold down the paper, so that an erroneous operation may occur. is there. For this reason, after pressing the paper sheet securely with the paper presser, a certain separation distance is provided between the paper presser and the punching punch so that the punching operation is performed with the punching punch, and the timing of the paper presser operation and the punching operation is set. There is a drawback that the drilling operation is delayed correspondingly.

  Of course, since the paper presser and punch punch must be lowered to the paper sheet position at the same time, the power consumption is wasted accordingly.

  The present invention has been devised to provide a paper sheet punching device that eliminates the disadvantages of the conventional example.

  A pulley connected to the drive motor is provided in the apparatus main body, a key provided on the inside of the pulley is slid into the key groove, the main shaft is vertically installed in the apparatus main body, and a male screw provided on the main shaft is screwed. The main shaft is assembled to the support base that is screwed into the hole and the paper presser frame is suspended, and a punching punch for punching the paper sheet pressed by the paper presser piece of the paper presser frame is provided at the lower end of the main shaft. In addition, a pinch is provided in the apparatus main body in parallel with the main shaft, and a pinch means for holding the support base in a proper position in the vertical direction by pinching a proper position in the vertical direction of the support shaft, and a spindle by the pinch means The operation means for releasing the clamped state is a basic means that is provided on the support base, and more specifically, the clamp means is spring-engaged in a locking groove arranged in parallel in the vertical direction on the peripheral side of the support shaft. A pair of sandwiching pieces that are engaged by biasing and pivotally attached to the support base. While constituting an operation means, than is assumed that configured in operation piece retract from the locking groove against the clamping piece urging the spring.

  At the same time when the paper presser piece for holding the paper is lowered, the punch punch is also lowered, so that the paper presser operation, which is a preliminary operation of the punching operation, can be performed. Provided is a paper sheet punching device that can be placed in the closest position at all times to punch a paper sheet and prevent an efficient punching work and wasteful consumption of electric power.

  FIG. 1 is a partially cutaway front view, FIG. 2 is a partially enlarged view of FIG. 1, FIG. 3 is a cross-sectional view of FIG. FIG. 4 is a partially enlarged view of FIG. 3.

  In the figure, reference numeral 1 denotes an apparatus main body, and the apparatus main body 1 is a pair of frames 1a, 1a erected relative to an apparatus base (not shown), and a pair of upper and lower support plates 1b, 1b installed above the frames 1a, 1a. And a pair of pulleys 2 and 2 are interposed between the support plates 1b and 1b of the apparatus main body 1 so as to be freely rotatable.

  The pulley 2 is connected to a drive motor (not shown) provided in the apparatus main body 1 via a belt 3. The pulley 2 is combined with the main shaft 4 penetrating on the axis, and provided inside the pulley 2. The key 5 is slidably fitted in a key groove 6 provided on the peripheral side of the main shaft 4 so that the rotational force of the drive motor is transmitted to the main shaft 4 via the pulley 2, while the key 5 and the key groove 6 are engaged. Due to the relationship, the main shaft 4 can be freely moved as required.

  The main shaft 4 includes a male screw 7 engraved in an intermediate portion, and is supported by being screwed into a screw cylinder 9 constituting a screw hole, which is fixedly mounted on a support base 8 arranged below the support plate 1b. A perforation rod 10 is detachably attached to the lower end protruding from the screw cylinder 9 (support base 8).

  The support base 8 is attached to one end of a support rod 12 having a long long window 11 provided in the frame 1a passing through the support piece 8a attached to both sides (on the frame 1a side). The other end is attached to the leg piece 13b of the paper presser frame 13, and the paper presser frame 13 is suspended (provided integrally). The main shafts 4, 4 are screwed into the screw cylinder 9 with the male screw 7. A through hole 14 is provided at the center between the upper end of the support plate 1b and the support shaft 15 vertically arranged (suspended) side by side with the support shaft 4 is passed through the through hole 14 so that the screw cylinder 9 Is guided by the male screw 7 part (main shaft 4), and the through hole 14 part is guided by the support shaft 15 so as to move vertically.

  The support shaft 15 has a spiral groove engraved so that an infinite number of locking grooves 15a,... Are formed along the longitudinal direction of the support shaft 15 (the spiral groove is provided to provide the locking groove 15a. This is for the convenience of manufacturing, and in short, it is sufficient that a “locking groove” is formed by a recessed portion formed by alternately and repeatedly forming irregularities), and this support shaft is engaged with the locking groove 15a. A pair of clamping pieces 16, 16 for clamping 15 is pivotally mounted on the support base 8.

  The sandwiching pieces 16 and 16 are arranged through the support shaft 15 through the through-hole 14 and are pivotally attached to the support base 8 as described above with one end portion extending in a direction crossing the support base 8 being rotatable by the shaft 17. In addition, an intermediate portion of the one side edge portion 16 ′ along the opposing longitudinal direction is provided with a slightly semicircular concave insertion edge, and appropriate locking grooves 15 a arranged in the vertical direction of the support shaft 15. A first coil spring 18 is installed between one end on the shaft 17 side so that the holding edge 16a is detached from the locking grooves 15a,. It has been energized.

  The one side edge portion of the sandwiching piece 16 is centered on the shaft 17 of the sandwiching pieces 16 and 16 and is urged by the first coil spring 18 on the rotation locus urged by the first coil spring 18. A regulating piece 19 with which the other side edge portion 16 ″ corresponding to 16 ′ is always in pressure contact is arranged and pivotally mounted on the support base 8 by a shaft 20.

  The restricting piece 19 has one end of the arc-shaped flat plate main body 19A that partially surrounds the screw cylinder 9 or the main shaft 4 screwed with the screw cylinder 9 on the support portion piece 8a side as the support base 8 as described above. A pivot piece is pivotally mounted, and a piece 19a is provided on one side of the arcuate outer edge of the pivot joint, and one end of the piece 19a is pivoted to the operation piece 21 by a connection pin 27. In addition, the other end of the mediating piece 28 disposed on the lower side of the support base 8 is rotatably connected by a connecting bolt 29, while the other end of the flat plate main body 19A corresponding to the one end on the pivoting portion side A pin 22 protrudes from one end of the support shaft 15 along the axis of the support shaft 15, and the other end of the second coil spring 23 locked to the pin 22 protrudes from the support base 8 (support shaft). 33 is attached to the support base 8) and is attached to the auxiliary piece 24 (projection piece thereof). The spring 15 is urged to rotate about the shaft 20 by the urging of the spring 23, presses the clamping piece 16 against the urging of the first coil spring 18, and the supporting shaft 15 is clamped by the clamping piece 16. Hold.

  The rotation of the restricting piece 19 that is urged to rotate by the tension of the second coil spring 23 about the shaft 20 is on the rotation locus of the free end (the other end) of the restricting piece 19 (the flat plate main body 19A). The restriction piece 19 is regulated by coming into contact with a stopper 25 made of a pin projecting from the support base 8, and is clamped by the bias of the first coil spring 18 by the regulation piece 19 arranged at the rotation regulation position. The rotation of the piece 16 around the shaft 17 is restricted. As described above, the sandwiching pieces 16 and 16 are engaged with the locking grooves 15a at the sandwiching edges 16a and 16a to sandwich the support shaft 15.

  The operation piece 21 has an L-shaped piece of a slightly L-shaped main part piece 21b that penetrates the leg piece 13b of the paper holding frame 13 and is disposed at one end of the main part at the end disposed outside the paper holding frame 13. The operation part piece 21a is connected to the piece 21b so as to be bent at a right angle, and the other piece of the main piece 21b with respect to the L-shaped piece is used as the intermediate piece 28 and the leg part of the paper holding frame 13. Between the front piece 13c that is bent and connected to the front end of the piece 13b, the intermediate piece 28 side is pivotally attached to the intermediate piece 28 by the connecting pin 27 as described above. The piece 13c side is pivotally attached to the front piece 13c by a pivot pin 26 and is assembled to the paper presser frame 13.

  As described above, the paper presser frame 13 has an L-shaped paper presser piece 13a erected between the lower ends of the leg pieces 13b and 13b that are continuously provided with the front piece 13c bent at the front end, and the leg piece 13b. A grip piece 13d is connected to the upper end of the operation piece 21 so as to face the operation portion 21a of the operation piece 21, and the paper holding piece 13a is located at the position on the axis of the punching rod 10. A through hole 30 is provided through which the collar 10 penetrates and moves.

  Then, using the paper alignment device 36 (may be omitted or may be a device in which the paper alignment device 36 itself is omitted), the paper is placed on a base plate (not shown). Then, when the operation piece 21 is rotated around the pivot pin 26 with another fingertip applied to the operation piece 21a while placing the fingertip on the handle piece 13d on the paper holding frame 13 side, the operation piece 21 is mediated. Since the restricting piece 19 is connected via the piece 28, the restricting piece 19 rotates around the shaft 20 against the urging force of the second coil spring 23, contacts the holding piece 16, and the holding piece 16. The clamping piece 16, which has been retracted from the position closest to the shaft 17 and whose rotation about the shaft 17 due to the urging of the first coil spring 18 is regulated by the regulating piece 19, is associated with the first coil spring. 18 is rotated around the shaft 17 by the action of 18, the clamping edge 16 a of the clamping piece 16 is Disengaged from the engaging groove 15a of the shaft 15, as a result, the holding piece 16 is in a state freely move in support shaft 15a axial direction relative to the support shaft 15.

  When the grip part 13d and the operation part 21a are held with the fingertips and lowered, the presser frame 13 and the support base 8 are integrated with each other as described above. The main shaft 4 is assembled to the screw cylinder 9 provided on the support base 8 with the male screw 7 and the key 5 is engaged with the key groove 6 provided on the main shaft 4 to engage the key 5 in the vertical direction with respect to the pulley 2. Since the movement is free, the punching bar 10 provided at the lower end of the main shaft 4 assembled to the support base 8, that is, the support base 8 via the male screw 7 or the like, and the paper presser frame 13, that is, the paper presser piece 13 a, The top end of the punching rod 10 arranged at the highest position is lowered while maintaining the state of being engaged with the through-hole 30, and the paper pressing piece 13a presses the paper to be punched (processed) paper. It becomes a state.

  In this state, when the fingertip is released from the operation piece 21a, the second coil spring 23 acts to rotate the regulating piece 19 around the shaft 20 to return to the original position. The urging force of the second coil spring 23 acts inside, and the restricting piece 19 presses the holding piece 16 against the urging force of the first coil spring 18 and rotates it around the shaft 17, and as a result The piece 16 holds the support shaft 15 at the holding edge 16a, and the support base 8 is assembled to the support shaft 15 by this holding.

  Next, when the drive motor (not shown) is operated to rotate the pulley 2, the main shaft 4 linked to the pulley 2 is rotated by the engagement relationship between the key 5 and the key groove 6, and the male screw 7 of the main shaft 4 is rotated. Since it is screwed into the screw cylinder 9 provided on the support base 8 in a stationary state, it is guided and lowered by the screw cylinder 9, that is, the main shaft 4 provided with the punching rod 10 is supported by the support base 8 and the paper presser. Lowers independently of the frame 13, punches the paper pressed by the paper presser frame 13 (paper presser piece 13a), and finishes the punching operation (Note that after punching, the punching bar 10 is returned to its original position by a known means. )

  Then, by manipulating the operation piece 21, the support base 8 to the paper presser frame 13 are appropriately moved vertically, and the above-described operation is repeated to perform the next drilling operation.

Partial missing front view. The partially expanded view of FIG. FIG. 2 is a cross-sectional view of FIG. 1. FIG. 4 is a partially enlarged view of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus body 2 Pulley 4 Main shaft 5 Key 6 Key groove 7 Male screw 8 Support base 10 Perforated trough 13 Paper holding frame 13a Paper holding piece 15 Support shaft 15a Locking groove 16 Holding piece 16a Holding edge

Claims (2)

  A pulley connected to the drive motor is provided in the apparatus main body, a key provided on the inside of the pulley is slid into the key groove, the main shaft is vertically installed in the apparatus main body, and a male screw provided on the main shaft is screwed. The main shaft is assembled to the support base that is screwed into the hole and the paper presser frame is suspended, and a punching punch for punching the paper sheet pressed by the paper presser piece of the paper presser frame is provided at the lower end of the main shaft. And a holding means for vertically arranging a support shaft in parallel with the main shaft in the apparatus main body, holding the appropriate base in the vertical direction of the support shaft, and placing the support base in an appropriate position in the vertical direction, and the support shaft by the holding means A paper sheet punching device in which operation means for releasing the holding state is provided on the support base. The clamping means is constituted by a pair of clamping pieces that are engaged with locking grooves arranged in the vertical direction on the peripheral side of the support shaft by using a spring bias, and pivotally attached to the support base. On the other hand, the paper punching device according to claim 1, wherein the operation means comprises an operation piece for retracting the clamping piece from the locking groove against the spring bias.

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