JP6291836B2 - Rotating perforation apparatus and image forming system provided with the same - Google Patents

Description

  The present invention relates to a rotary punching device for punching paper and an image forming system including the rotary punching device.

  There is already known a mechanism in which punching is performed by rotating and lowering a punch needle by rotating a pinion attached to the punch needle using a rack.

  However, in the conventional rack and pinion type punch, it is necessary to stop the rotation of the pinion for pins that are not drilled. Therefore, it is necessary to prepare slide arms having different rack (tooth) patterns depending on the drilling position, and the drilling position cannot be freely changed.

  Patent Document 1 discloses an apparatus for arbitrarily selecting a punch pin to be perforated. This apparatus has a first rack gear, has a punch pin that forms a hole in the paper by moving in the axial direction, and a second rack gear, and receives a driving force from a driving source to receive the punch pin. A slider that reciprocates in a direction crossing the moving direction is provided. Moreover, it has a fan-shaped pinion gear and / or a chipped pinion gear. Then, the reciprocating motion of the slider is converted into the moving motion of the punch pin by meshing with the second rack gear of the slider and the first rack gear of the punch pin. In this mechanism, the slider can perform a reciprocating operation using one direction and a reciprocating operation using the other direction. Further, when the slider reciprocates in one direction or the other direction, the engaged punch pins are moved, and the non-engaged punch pins are not moved.

  However, as described above, it is necessary to prepare slide arms having different rack (tooth) patterns in order to select whether or not punch pins are drilled. Therefore, the problem that the drilling position cannot be freely changed has not been solved.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rotary punching device that enables a lead pin for rotary punching to be taken in and out, and enables punching with an arbitrary punch needle by selecting a plurality of required grooves.

  A rotary punching device according to the present invention includes a punch needle that can rotate and move up and down, a punch needle rotation mechanism that rotates the punch needle, and a plurality of guides that guide the punch needle to move up and down or not up and down. A groove, a plurality of lead pins that can be fitted to and separated from the groove, a control mechanism that selects a lead pin by inserting and removing the lead pin, and a housing for storing the entire punch needle It is characterized by.

  According to the present invention, since the punch needle operates according to the shape of one selected groove, only the selected arbitrary punch needle can perform the punching operation. This is because during rotation drilling, only one lead pin is taken out in one pinion and the remaining lead pins are accommodated.

1 is a conceptual diagram illustrating an entire general image forming system as an object of implementation of the present invention. 1 is an overall view of a rotary punching device. It is a figure for demonstrating the structure of a punch needle | hook and a lead pin. It is a figure explaining the method of switching a lead pin, without considering the position of a groove | channel. It is a figure explaining the method of switching a pin, without considering the position of a groove | channel. It is a figure explaining the method in Embodiment 4 of this invention which switches a pin, without considering the position of a groove | channel. It is a figure explaining operation | movement of the lead pin fitted to the groove | channel of a punch needle | hook in Embodiment 5 of this invention. It is a figure explaining the up-and-down operation | movement of a punch needle | hook in Embodiment 6 of this invention. It is a figure explaining the punch structure which set the lead pin to the same height in Embodiment 7 of this invention. It is a figure explaining the structure which has arrange | positioned the several lead pin coaxially in Embodiment 8 of this invention. It is a figure explaining the mechanism regarding the punch residue removal member in Embodiment 9 of this invention. It is a figure explaining the method to switch a lead pin in consideration of the position of a groove | channel in Embodiment 10 of this invention. It is a figure explaining the punch switching method by the uneven | corrugated shape given to the slide arm in Embodiment 11 of this invention. It is a figure explaining the mechanism in and out of a lead pin in Embodiment 12 of this invention. It is a figure explaining the groove | channel of the lead pin and punch pin needle | hook in Embodiment 13 of this invention.

  Embodiments of the present invention will be described with reference to the drawings. The rotary punching apparatus according to the present invention has the following features in the rotary punching process using the rack and pinion method.

<Embodiment 1>
FIG. 1 is a conceptual diagram showing the whole of a general image forming system as an object of the present invention. The image forming apparatus 100 is provided with a document processing apparatus 200 for automatically transporting a document and reading the image. A paper post-processing apparatus 300 that receives paper discharged from the image forming apparatus 100 and performs processing such as punching and stapling is linked.

  The rotary punching device 400 that performs punching is installed in the paper transport path in the paper post-processing device 300. When the paper being conveyed passes through the rotary punching device 400, the paper is temporarily stopped and punched.

  FIG. 2 is an overall view of the rotary punching device 400. In the figure, four punches 101 to 104 are supported by the casing. Moreover, the rack 105 is provided in the position which meshes with the pinions 101P-104P provided in the lower part of punch 101-104. The rack 105 has a mechanism that slides in the left-right direction in the figure by a drive source (not shown). As the rack 105 slides, the pinions 101P to 104P are driven to rotate, whereby the punches 101 to 104 rotate. Further, the grooves 101G to 104G of the punches 101 to 104 are fitted with pins (not shown), and the pins (not shown) move up and down along the grooves 101G to 104G as the punches 101 to 104 rotate. As a result, the punches 101 to 104 also move up and down.

FIG. 3 is a diagram for explaining a configuration of punch needles and lead pins constituting the punches 101 to 104 shown in FIG.
Grooves are dug in the outer peripheral surface of the punch needle 6 like grooves 3 and 4. In the figure, reference numeral 5 denotes a pinion which meshes with a rack (not shown) (a rack 105 in FIG. 2) prepared separately and rotates the entire punch needle 6 as the rack moves.

  In FIG. 3A, reference numerals 1 and 2 are lead pins. These lead pins 1 and 2 are provided with a mechanism (not shown) for controlling the insertion and removal. The lead pin 2 is in a state in which the lead pin is protruded, and the lead pin 1 is in a state in which the lead pin is accommodated. The lead pins 1 and 2 mesh with the grooves 3 and 4, respectively. The punch needle 6 is disposed in the housing 7 and is supported by the lead pin 1 or the lead pin 2.

  In FIG. 3A, the lead pin 2 is in the protruding state as described above, and when the pinion 5 is rotated by the movement of a separately prepared rack, the lead pin 2 moves in the groove 4, and the punch needle is accordingly moved. 6 descends as shown in FIG.

  On the other hand, in FIG. 3A, an example in which the pinion 5 rotates while the lead pin 1 is protruding is shown in FIG. Since the height of the groove 3 meshing with the lead pin 1 does not change, the height of the punch needle 6 does not change even if the pinion 5 rotates, and no drilling is performed.

  3 (A) to 3 (C) and FIG. 3 (E) showing the appearance of the punch needle, the groove 3 is a straight groove, but this groove 3 is like the groove 8 in FIG. 3 (D). It is also possible to make the groove bent in the vertical direction. In the case of the groove configuration as shown in FIG. 3D, the timing can be changed to the extent that the height of the punch needle 6 is changed by switching the groove to be used. That is, the timing of drilling, the depth of drilling, and the like can be changed.

<Embodiment 2>
4A to 4G are diagrams for describing a method of switching lead pins without considering the position of the groove in the second embodiment.
In the punch presence / absence control in the first embodiment described above, the lead pins can be switched without considering the groove position. FIG. 4A shows an example of a lead pin used at that time, and an elastic member 21 is used. However, this elastic member may be arranged on the power source side of the lead pin as shown by reference numeral 22 in FIG. The lead pins 23 and 24 are also provided with a function of detecting that the tip of the lead pin is fitted in the groove by a sensor or a mechanical mechanism.

A groove switching method will be described with reference to FIGS.
As the lead pins 23 and 24, those provided with the elastic member 22 shown in FIG. 4A are used. Of course, an elastic member 21 may be added.

  FIG. 4D is a view showing a state in which the punch needle 6 is rotated 180 degrees from FIG. When the lead pin 24 is pushed out to the punch needle 6 side in this state, the lead pin 24 comes into contact with the outer peripheral surface of the punch needle 6 as shown in FIG. Since the elastic member 22 is attached to the lead pin 24, even if the lead pin 24 hits the punch needle 6, the elastic member 22 contracts so that the lead pin 24, the punch needle 6 or a pinion (not shown) is not broken.

  FIG. 4F is a view showing a state in which the punch needle 6 is further rotated in the direction of the arrow d. When the lead pin 24 reaches above the groove 4, both the lead pins 23 and 24 are fitted in the grooves 3 and 4. When it is detected that the lead pins 23 and 24 and the grooves 3 and 4 are fitted, the lead pin 23 is accommodated as shown in FIG. Thereby, switching from the lead pin 23 to the lead pin 24 is completed.

  Conversely, when switching from the lead pin 24 to the lead pin 23, the lead pin 24 is moved up and down along the groove when the tip of the lead pin 23 is placed on the surface of the punch needle 6 and the punch needle 6 is rotated (and moved up and down). In addition, the lead pin 23 fits in the groove 3 somewhere. By storing the lead pin 24 at that time, the switching from the lead pin 24 to the lead pin 23 is completed.

<Embodiment 3>
FIGS. 5A to 5H are diagrams illustrating a method of switching pins without considering the position of the groove in the third embodiment.
5 (A) to 5 (H) show a punch device that switches grooves by simply controlling insertion / removal of one lead pin in the punch described in the first embodiment.

  FIG. 5A is an example of a lead pin used at that time, and an elastic member 26 is used. However, like the elastic member 27 shown in FIG. 5B, it may be arranged on the power source side of the lead pin. Like the lead pins 26 and 27, the tip thereof is preferably tapered, and the tip is preferably a circular cone.

With reference to FIG. 5C and subsequent figures, the groove switching method of the present embodiment will be described.
Reference numerals 29 and 30 denote lead pins, and the elastic force of the elastic member is set to a value different between the lead pins 29 and 30, and the elastic force of the lead pin 30 is increased. An elastic member 28 is mounted under the pinion. This may be the upper part of the pinion.

  Here, a mechanism for inserting / removing the lead pins 29, 30 is added only to the lead pin 30, and the lead pin 29 does not have a function of intentionally inserting / removing the lead pin, and always keeps protruding.

  5D to 5F show a state in which the lead pin 30 pressed against the surface of the punch needle 6 naturally fits into the pinion groove 4 as in the second embodiment. However, in this embodiment, the lead pin 29 remains fitted in the groove 3 as it is.

FIG. 5G is a diagram showing a state where the pinion is further rotated.
Since the elastic force of the lead pin 30 is stronger than the elastic force of the lead pin 29, the weakly elastic lead pin 29 is disengaged from the groove 3, and the punch needle 6 is perforated according to the operation of the lead pin 30 following the groove 4. become. At this time, the elastic member 28 under the pinion is compressed. In this way, switching from the lead pin 29 to the lead pin 30 is completed.

FIG. 5H is a diagram showing a switching method opposite to the method described above.
When the lead pin 30 is housed and removed from the groove 4 in FIG. 5 (G), the punch needle 6 moves upward as shown in FIG. 5 (H) by the force of the elastic member 28. In the process of moving the punch needle 6 upward, the lead pin 29 that has been outside the groove 3 until now fits into the groove 3, and the punch needle 6 operates according to the operation of the lead pin 29. In this way, switching from the lead pin 30 to the lead pin 29 is also completed.

<Embodiment 4>
6A and 6B are diagrams illustrating a method of switching pins without considering the position of the groove in the fourth embodiment.
FIGS. 6A and 6B show a punch apparatus including a plurality of grooves and lead pins for switching the presence or absence of perforation in the punch of the first embodiment described above. With such an apparatus, it becomes possible to switch the punching speed and timing for each punch needle.

  FIG. 6A shows an example in which one groove and one lead pin are added. In the grooves 4 and 4a corresponding to the lead pins 32 and 33, the timing and the drilling time are different, and the punching pattern can be switched for each punch needle as necessary.

  FIG. 6B is a diagram in the case of using one lead pin for drilling. Only the lead pin 34 is used as a lead pin for drilling, and the groove to be fitted is selected so that the drilling pattern and timing can be switched.

<Embodiment 5>
FIGS. 7A and 7B are views for explaining the operation of the lead pin fitted in the groove of the punch needle in the fifth embodiment.
As shown in FIG. 7A, the punch needle 6 is provided with two grooves 3 and 4, and there are two lead pins 1 and 2 that fit into the grooves 3 and 4. A rack (not shown) for rotating the punch needle 6 is engaged with the pinion 5 below the punch needle 6. Further, the lead pins 1 and 2 have a mechanism capable of switching fitting / separation with respect to the grooves 3 and 4 by a switching control means (not shown). The punch needle 6 and the lead pins 1 and 2 are held without being fixed by the housing 7 so as to be slidable in the axial direction.

  In a normal state (during stoppage and start-up paper feeding), as shown in FIG. 7B or 7C, either the lead pin 1 or the lead pin 2 is engaged with the groove 3 or the groove 4. Yes. When the lead pin 1 is engaged with the groove 3, even if the punch needle 6 rotates, the groove 3 is horizontal, so punch punching, that is, the punch needle does not move up and down. On the other hand, when the lead pin 2 is engaged with the groove 4, the punch needle 6 moves up and down along the groove 4, so that punch punching can be performed.

  In the present embodiment, when the paper transport device including the rotary punching device described above detects a specific state, the lead pins 1 and 2 can be switched to be separated from the grooves 3 and 4. The specific state is, for example, a jam state, a door open / close state, an initial operation, a power-on, or an operation request instruction received from the image forming apparatus.

  For example, here, it is assumed that the paper is jammed during the punching operation and the punch needle 6 is lowered to penetrate the paper when the jammed paper is removed. In that case, it is necessary to cut the paper. Further, when the paper is cut, a piece of paper is scattered, which takes time for removal work. Therefore, when the paper is jammed, all the lead pins 1 and 2 are separated from the grooves 3 and 4 as shown in FIG. As a result, the punch needle 6 can freely slide in the vertical direction, and jamming is facilitated.

<Embodiment 6>
8A and 8B are diagrams for explaining the vertical movement of the punch needle in the sixth embodiment.
As shown in FIG. 8A, the punch needle 6 is provided with two grooves 3, 4, and there are two lead pins 1, 2 that fit into the grooves 3, 4. A rack (not shown) for rotating the punch needle 6 meshes with the pinion 5 below the punch needle 6. The lead pin 1 and the lead pin 2 have a mechanism capable of switching fitting / separation with respect to the groove by a switching control means (not shown). The punch needle 6 and the lead pins 1 and 2 are held without being fixed so as to be slidable in the axial direction by the housing 7, and an elastic member 8 is provided between the tip of the punch needle 6 and the housing 7. It is provided.

  As shown in FIG. 8B, when the lead pin 2 is fitted in the groove 4, the elastic member 8 is compressed, and the punch needle 6 moves up and down along the lead pin. The same applies when the lead pin 1 is fitted in the groove 3. On the other hand, as shown in FIG. 8A, when all the lead pins are separated from the punch needle 6, the punch needle 6 is lifted upward by the elastic member 8.

  In the present embodiment, when the paper transport device including the rotary punching device as described above detects a specific state, the lead pins 1 and 2 can be switched to be separated from the grooves 3 and 4. The specific state is, for example, a jam state, a door open / close state, an initial operation, a power-on, or an operation request instruction received from the image forming apparatus. Further, when all the lead pins 1 and 2 are separated from each other, the punch needle 6 is pulled up by the elastic member 8.

  For example, when the paper is jammed during the punching operation or the like, it is necessary to cut the paper if the punch needle 6 is lowered and penetrates the paper when the jammed paper is removed. There is. In addition, when the paper is cut, a piece of paper is scattered and it takes time to remove the paper. When the paper is jammed, as shown in FIG. 6A, all the lead pins are separated from the groove. Let me. Thereby, there is an effect that the punch needle 6 is pulled upward and the jam processing is facilitated.

<Embodiment 7>
FIG. 9A to FIG. 9D are diagrams illustrating a punch structure in which the lead pins are set at the same height in the seventh embodiment.
As shown in FIG. 9A, the punch needle 6 is provided with two grooves 3 and 4, and the two lead pins 1 and 2 fitted to the grooves 3 and 4 are arranged at the same height. It is. A rack (not shown) for rotating the punch needle 6 meshes with the pinion 5 below the punch needle 6. The lead pins 1 and 2 have a mechanism capable of switching fitting / separation with respect to the grooves 3 and 4 by a switching control means (not shown). The punch needle 6, the lead pin 1, and the lead pin 2 are held without being fixed by the housing 7 so as to be slidable in the axial direction. Further, the grooves 3 and 4 have different widths and depths, and the lead pin 1 and the lead pin 2 are engaged with the groove 3 and the groove 4, respectively.

  In this embodiment, since the shape of the plurality of grooves is different, the grooves are provided so as to intersect with each other, whereby the punch needle device can be miniaturized.

  As shown in FIG. 9 (B), when the lead pin 1 is protruded, it fits into the groove 3, and as shown in FIGS. 9 (C) and 9 (D), when the lead pin 2 is protruded, the groove By fitting with 4, two types of operations are possible.

<Eighth embodiment>
FIGS. 10A to 10D are diagrams illustrating a structure in which a plurality of lead pins are coaxially arranged in the eighth embodiment.
As shown in FIG. 10 (A), the punch needle 6 is provided with two grooves 3 and 4, and two lead pins 1 and 2 that fit into the grooves 3 and 4 are arranged coaxially. . A rack (not shown) for rotating the punch needle 6 meshes with the pinion 5 below the punch needle 6. The lead pin 1 and the lead pin 2 have a mechanism capable of switching fitting / separation with respect to the groove by a switching control means (not shown). The punch needle 6 and the lead pins 1 and 2 are held without being fixed by the housing 7 so as to be slidable in the axial direction. Further, the grooves 3 and 4 have different widths and depths, and the lead pin 1 is fitted to the groove 3 and the lead pin 2 is fitted to the groove 4.

  The present embodiment is characterized in that the lead pin 1 and the lead pin 2 are arranged on the same axis, whereby the punch needle device can be miniaturized.

  As shown in FIG. 10 (B), when the lead pin 1 is protruded, it fits into the groove 3, and as shown in FIGS. 10 (C) and 10 (D), when the lead pin 2 is protruded, the groove By fitting with 4, two types of operations are possible.

<Ninth Embodiment>
FIGS. 11A and 11B are views for explaining a mechanism relating to a punch residue removing member in the ninth embodiment.
As shown in FIG. 11A, the punch needle 6 is provided with two grooves 3 and 4, and two lead pins 1 and 2 which are fitted to the grooves 3 and 4 are arranged. The lead pins 1 and 2 have a mechanism capable of switching fitting / separation with respect to the grooves 3 and 4 by a switching control means (not shown).

  Further, a punch residue removing member 18 is arranged on the same axis inside the punch needle 6. The punch residue removing member 18 is also provided with two grooves 3a and 4a, and two lead pins 1a and 2a that fit into the grooves 3a and 4a.

  A rack 11 for rotating the punch needle 6 and the punch residue removing member 18 meshes with the pinion 13 at the center portion of the punch needle 6 and the pinion 12 at the center portion of the punch residue removing member 18. The punch needle 6, the punch scrap removing member 18, the lead pins 1 and 2, and the lead pins 1 a and 2 a are held by the housing 14 without being fixed so that they can slide in the axial direction.

  In this embodiment, when removing the punch residue remaining at the tip of the punch needle 6, the lead pin 3 is fitted into the groove 3a so that the punch needle 6 does not move up and down. Further, the lead pin 2 is controlled to be fitted into the groove 4 so that the punch residue removing member 18 moves up and down. In this state, the punch needle 6 and the punch residue removing member 18 are rotated. Accordingly, as shown in FIG. 11B, only the punch residue removing member 18 is moved up and down, whereby the punch residue can be removed.

<Embodiment 10>
FIG. 12 is a diagram for explaining a method of switching the lead pins in consideration of the position of the groove in the tenth embodiment.
At the timing of switching the lead pin without the elastic member as in the second embodiment, both grooves need to be at the corresponding lead pin groove positions. In the present embodiment, as shown in FIG. 12, the lead pins 1 and 2 are in positions where the grooves 3 and 4 are just engaged.

  In the drawing, reference numeral 14 denotes a mark indicating the switching position of the lead pins 1 and 2, and although not shown in the present embodiment, a mechanism, device, or system for reading the mark 14 is provided. When the mark 14 is read by these mechanisms and the switchable position is detected, the lead pins 10 and 11 are switched. A known mechanism may be used as a mechanism for reading the mark 14.

<Embodiment 11>
FIG. 13 is a diagram for explaining a punch switching method using a concavo-convex shape applied to a slide arm in the eleventh embodiment.
Specifically, FIG. 13A is a diagram showing the positional relationship between the punch needle and the lead pin, FIG. 13B is a diagram showing the slide arm (one punch) in an expanded state, and FIG. It is a figure which expand | deploys and shows a slide arm (for several punch).

  The present embodiment is a punch device in which, in the punches described in the above-described first and third to ninth embodiments, the lead pins can be taken in and out using a slide arm. In FIG. 13A, the pinion 17 includes a portion having a large diameter (rack and teeth) and a portion having a small diameter (for moving the punch needle). Further, the slide arm 16 is elongated upward so that the drive can be transmitted to a portion having a small pinion diameter. An example of an actual slide arm is shown in FIG.

  FIG. 13B shows the slide arm 16 for one punch needle. Reference numeral 19 in the figure is a conventional rack portion that rotates the pinion, and the convex portion indicated by reference numeral 20 is a portion that pushes out the lead pin. In FIG. 13B, three parts a, b, and c are shown as an example, but the number varies depending on the type of punching pattern and the interval between punch needles. In this example, one of a, b, and c is used for one drilling. When it is determined which part is to be used, the slide arm 16 is moved so that the predetermined part can be used before the paper arrives.

  The example of FIG. 13B is an example of a slide arm for one punch, but the actual slide arm is shown in FIG. It becomes the form connected for the number.

<Twelfth embodiment>
FIGS. 14A and 14B are views for explaining a mechanism for inserting and removing lead pins in the twelfth embodiment.
FIG. 14A shows an example in which the lead pins 1 and 2 are directly connected to an operating device. The lead pins 1 and 2 are operated by solenoids 35 and 36, respectively. A motor can be used instead of the solenoid, but in that case, the arrangement is 90 degrees different from the case where the solenoid is used. FIG. 14B shows an example in which motors 37 and 38 are used instead of the solenoid. In this example, the gear devices 39 and 40 are used on the way in order to change the rotation operation to the operation of taking in and out the lead pins 1 and 2. If a solenoid or motor is used for each lead pin in this way, each lead pin can be moved to an arbitrary position at an arbitrary time.

<Embodiment 13>
FIG. 15 is a diagram for explaining a groove between a lead pin and a punch pin needle in the thirteenth embodiment.
This embodiment is a punch device having a shape suitable for fitting the lead pin and the groove in the punches described in the first to twelfth embodiments. That is, as shown in FIG. 15, the tip of the lead pin 41 has a tapered shape. Also, the groove 42 has a shape corresponding thereto. With such a configuration, it is easy to fit the lead pin 41 into the groove 42.

As described above, the rotary punching apparatus according to the embodiment of the present invention includes a punch needle that can rotate and move up and down, and a punch needle rotation mechanism that rotates the punch needle. A plurality of grooves for guiding the punch needle to move up and down, and a plurality of lead pins that can be fitted to and separated from the grooves, and a control mechanism that selects a lead pin by inserting and removing the lead pin; And a housing for storing the entire punch needle.
The rotary punching apparatus includes a lead pin using an elastic member partially or entirely and a mechanism for detecting that the lead pin is fitted in the groove of the punch needle. And it is set as the structure which detects the fitting with the groove | channel of a lead pin and a punch needle | hook, and pulls out the switching source lead pin from the groove | channel of a punch needle | hook. Then, the switching destination lead pin can be easily engaged with the groove of the punch needle.
Further, if the elastic force of the elastic member attached to each lead pin is different, the groove can be switched only by controlling the insertion / removal of one lead pin. When a plurality of grooves and lead pins for switching the presence / absence of perforation are provided, the speed and timing of perforation can be switched for each punch needle.

  Control means for managing / controlling the state of the paper transport device including the rotary punching device is provided, and when the paper transport device is in a specific state, all the lead pins are switched to a state of being separated from the groove. Thus, the punch needle can be easily moved up and down by separating the lead pin from the groove when the paper transport device is in a specific state (jammed state, door opening / closing, power-on, operation instruction). And operability such as jam processing is improved.

  In addition, by providing an elastic member for sliding the punch needle upward in a state where all of the plurality of lead pins are stored, the punch needle automatically moves upward when the lead pin is separated from the groove. Operability such as processing is improved. The width and depth of the plurality of grooves provided on the punch needle are different, and the lead pins that respectively engage with the plurality of grooves can be arranged at the same height. Furthermore, a plurality of lead pins can be integrated to reduce the size of the rotary punching device.

  Further, the rotary punching device has a punch debris removal member that can move up and down coaxially with the punch needle inside the punch needle, and has a punch needle rotation mechanism that rotates the punch debris removal member. A plurality of grooves are provided on the punch residue removing member, a lead pin that engages with the groove is provided, and a lead pin switching control unit that engages / separates the lead pin with the groove is provided. The lead pin switching control means can be switched at an arbitrary timing regardless of the lead pin switching control provided in the punch needle. By applying to the punch residue removing member, the punch residue removal can be easily controlled.

  The lead pin switching timing mark attached to the punch needle, a timing detection mechanism for detecting the lead pin switching timing, and a lead pin switching mechanism for switching the lead pin when timing is detected can be adopted. Thereby, by controlling the switching timing of the lead pin, unnecessary wear such as when the lead pin collides with the edge of the groove can be prevented. Further, by adopting a configuration in which a slide arm having a convex shape portion is operated, the convex shape portion pushes out the lead pin, whereby the pin itself can be taken in and out. Then, by using the slide arm, the lead pin can be taken in and out without being controlled by separate driving.

  In addition, if the configuration has a drive source such as a solenoid or a motor arranged for each lead pin, the lead pin can be switched at any timing by using a drive source such as a motor or solenoid prepared individually. You can select the needle.

  If the lead pin and the groove have a shape suitable for fitting, the lead pin can be easily fitted into the groove.

  The present invention is not limited to the embodiments described above, and many variations are possible by those having ordinary knowledge in the art within the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 100: Image forming apparatus 101-104: Punch 101G-104G: Groove 101P-104P: Pinion 105: Rack 200: Document processing apparatus 300: Paper post-processing apparatus 400: Rotary punching apparatus 1, 1a, 2, 2a, 23, 24 41: Lead pin 3, 3a, 4, 4a, 6, 7, 42: Groove 5, 12, 13, 17: Pinion 6: Punch needle 7: Housing 8: Elastic member 11: Rack 14: Mark 16: Slide arm 18: Punch residue removing member 20: Convex portion 21, 22, 26, 27: Elastic member 29, 30, 32, 33, 34: Lead pin 35, 36: Solenoid 37, 38: Motor 39, 40: Gear device

JP 2009-291881 A

Claims (12)

A punch needle that can rotate and move up and down;
A punch needle rotating mechanism for rotating the punch needle;
A plurality of grooves for guiding the punch needle to move up and down or not to move up and down;
A plurality of lead pins that can be fitted and separated from the groove;
A control mechanism for selecting a lead pin by inserting and removing the lead pin;
A housing for storing the entire punch needle;
A rotary perforating apparatus comprising: The rotary punching device according to claim 1,
Using an elastic member for a part or the whole of the lead pin,
A mechanism for detecting that the lead pin is fitted in the groove of the punch needle;
Means for detecting the fitting between the lead pin and the groove of the punch needle and pulling out the switching source lead pin from the groove of the punch needle;
A rotary punching device characterized by that. The rotary punching device according to claim 2,
The elastic force of the elastic member provided on each lead pin is different.
A rotary punching device characterized by that. The rotary punching device according to any one of claims 1 to 3,
Provided with a plurality of grooves and lead pins for switching the presence or absence of perforation,
A rotary punching device characterized by that. The rotary drilling device according to any one of claims 1 to 4,
Having a control means for managing / controlling the state of the paper conveying device provided with the rotary punching device;
When the sheet conveying apparatus is in a particular state, switching all of the lead pin in a state spaced grooves or al,
A rotary punching device characterized by that. The rotary punching device according to claim 5,
In a state where all of the plurality of lead pins are stored, an elastic member for sliding the punch needle upward is provided.
A rotary punching device characterized by that. The rotary punching device according to any one of claims 1 to 6,
The width and depth of the plurality of grooves provided in the punch needle are different,
The lead pins that respectively engage with the plurality of grooves are arranged at the same height.
A rotary punching device characterized by that. The rotary punching device according to claim 7,
The plurality of lead pins are integrated;
A rotary punching device characterized by that. The rotary drilling device according to any one of claims 4 to 8,
The punch needle is provided with a mark for switching the lead pin,
A timing detection mechanism for detecting the switching timing of the lead pin by the mark, and a lead pin switching mechanism for switching the lead pin;
The lead pin switching mechanism performs the switching of the lead pin when the timing detection mechanism detects that the lead pin switching timing is based on the mark .
A rotary punching device characterized by that. In the rotary punching device according to any one of claims 1 and 3 to 8 ,
A slide arm having a convex portion;
By the operation of the slide arm, the convex portion pushes out the lead pin, and the lead pin is put in and out.
A rotary punching device characterized by that. The rotary drilling device according to any one of claims 1 to 9 ,
A drive source is arranged for each lead pin .
A rotary punching device characterized by that. The rotary drilling device according to any one of claims 1 to 11 ,
A shape suitable for fitting the lead pin and the groove ,
A rotary punching device characterized by that.