JPH053255U - Paper folding device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The paper is folded so that it intersects perpendicularly to the feed direction. In the feeding process, skew of the paper is surely corrected, and
Provided a paper folding device that prevents the paper from being diagonally folded due to skewing. [Structure] A paper feeding mechanism 5 composed of a first roller 1 and a second roller 2, and a paper folding mechanism 6 composed of a first roller 1 and a third roller 3.
And a guide stopper mechanism 8 provided between the paper feeding mechanism 5 and the paper folding mechanism 6 in the paper folding device, in relation to the paper feeding mechanism 5, a pair in the paper feeding mechanism 5. One of the rollers is provided with a skew feeding correcting mechanism 10 having a pure mechanical structure for intermittently canceling the feeding of the sheet P during the feeding period of the sheet P to correct the skew feeding of the sheet P. Provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  This invention makes it possible for the desired paper to go straight in the feeding direction during the feeding process. Folding paper folding device, especially correcting skew of paper in the feeding process And a sheet folding device for preventing the sheet from being diagonally folded due to skewing. It is a thing.

[0002]

[Prior art]

  Conventionally, a paper folding device as shown in FIGS. 4A and 4B has been developed and provided. Is coming. These paper folding devices are used to intersect the desired paper in the feeding direction. It is a concrete example of folding in three along one line. 4A and 4B The illustrated sheet folding device includes a first roller 21, a second roller 22, and a third roller. 23 and a fourth roller 24, the first roller 21 and the second roller 22 A sheet feeding mechanism 25, the first roller 21 and the third roller The first sheet folding mechanism 26 constituted by the roller 23 and the third roll By the roller 23 (the first roller 21 in the example shown in FIG. 4B) and the fourth roller 24. Second sheet folding mechanism 27 configured as described above and stoppers S1 and S, respectively. From the one provided with the first and second guide stopper mechanisms 28, 29 provided with Has become. In the above two examples, the paper P is the paper from the direction of arrow A. It is sent to the first guide stopper mechanism 28 by the sending mechanism 25. . The leading edge Pa of the sheet of paper P is stored by the first guide stopper mechanism 28. When it is further fed while being in contact with the par S1, the first roller 21 and the first roller 21 Bending toward the side of the first sheet folding mechanism 26 configured by the roller 23 of No. 3 First, between the first roller 21 and the third roller 23 as the first bending end Fa. It is held in and folded in half. Paper P folded in half horizontally Is the second guide stopper machine where the first bending end portion Fa becomes the forward end. You will be guided to structure 29. The first flexible end portion Fa of the paper P has the second guide. When the sheet is further sent out while being in contact with the stopper S2 of the stopper mechanism 29, The third roller 23 (the first roller 21 in the example shown in FIG. 4B) and the fourth Begins to bend toward the second sheet folding mechanism 27 side configured by the rollers 24 of Therefore, a second flexible end Fb is formed between the third roller 23 and the fourth roller 24. It is gripped, folded in a horizontal tri-fold, and sent out in the direction of arrow B.

[0003]   In the conventional paper folding device described above, the paper P is in a skewed state (with respect to the feeding direction). The paper feeding mechanism 2 from the direction of the arrow A when the paper is fed in a tilted state) It may be sent to the sheet folding mechanism 26 via the sheet No. 5. As mentioned above, In the conventional paper folding device, the paper fed out in the state of being inclined with respect to the feeding direction. P is a problem that the sheet folding mechanism 26 is folded at an angle. Had.

[0004]

[Problems to be solved by the device]

  Therefore, in this invention, the desired paper in the feeding process is moved straight in the feeding direction. In a paper folding device configured to be folded like It is possible to surely correct the skew of the paper during the feeding process that is seen in the folding device of In addition, a paper folding device that prevents the paper from being obliquely folded due to skewing is provided. It is something to try.

[0005]

[Means for Solving the Problems]

  The present invention specifically cooperates with each other in achieving the above-mentioned object. Includes a first roller and a second roller that are combined to feed the paper in one direction. Paper feed mechanism,   It is located on the paper delivery side of the first and second rollers and is delivered A strike that receives the paper and regulates the advance of the paper at a preset paper delivery position. It is equipped with a lid to feed the paper in a predetermined direction for further feeding. A guide stopper mechanism that is oriented so as to cause bending toward   Oriented by the guide stopper mechanism in cooperation with the first roller. For including a third roller for holding the flexible end portion of the folded sheet and folding the sheet. In a paper folding device including a paper folding mechanism,   A sheet feeding mechanism composed of the first roller and the second roller Then, during the paper feeding period, the paper is moved by the guide stopper mechanism. The movement is regulated and starts to bend, and the bending end portion is between the first roller and the third roller. Before being gripped, the paper feed is intermittently released to skew the paper. The paper folding device is provided with a skew feeding correction mechanism for correcting the above.

[0006]

[Explanation of Examples]

  Hereinafter, a specific embodiment shown in the drawings of a paper folding device according to the present invention It will be described in detail based on.   FIG. 1A is a schematic side view showing a specific example of a paper folding device according to the present invention. Yes, FIG. 1B is a schematic side view seen from the direction of the arrow X in FIG. 1A. This In these figures, the paper folding device includes a first roller 1, a second roller 2 and a second roller 2. The third roller 3 and the fourth roller 4, and the first roller 1 and the second roller 2 and the first roller 1 and the third roller. First paper folding mechanism 6 constituted by the roller 3, the third roller 3 and And a second sheet folding mechanism 7 composed of a fourth roller 4 and First and second guide stopper mechanisms 8 and 9 equipped with toppers S1 and S2 It consists of what you have. In this invention, in particular, the first roller 1 and the second roller The paper P is fed to the paper feeding mechanism 5 constituted by the rollers 2 of During the delivery period, the sheet is restricted by the guide stopper mechanism 8 and is bent. First, the bending end portion Fa is gripped between the first roller 1 and the third roller 3. Before being inserted, the feeding of the paper P is intermittently released to prevent the paper P from being skewed. A skew correction mechanism 10 for correction is provided. In the specific embodiment shown in FIG. 1A The skew correction mechanism 10 includes a plurality of pairs of protrusions 1 provided on the first roller 1. It is composed of 1. The plurality of pairs of protrusions 11 are formed on the peripheral surface of the first roller 1. From the outside to a predetermined position outside the width dimension W of the paper. They are provided at angular intervals. The skew correction mechanism 10 is configured as a drive roller. The first roller 1 and the second roller 1 are rotated during one rotation period of the first roller 1. So as to intermittently separate the edge from the roller 2 and intermittently cancel the feeding of the paper P. Has become. In the above embodiment, the paper P is fed from the direction of the arrow A. The protrusion mechanism 5 feeds the first guide stopper mechanism 8 (see FIG. 2). (See A). The leading edge Pa of the sheet P is the same as that of the first guide stopper mechanism 8. When it is further sent out while being in contact with the stopper S1, the first roller 1 and And bends toward the first sheet folding mechanism 6 side configured by the third roller 3 Begin (see Figure 2B). In this invention, the circumferential dimension L of the plurality of pairs of protrusions 11 is set. The leading edge Pa of the sheet P hits the stopper S1 and begins to bend, The roller 1 and the third roller 3 so that they are shorter than the length until they are gripped. By setting in advance, the paper P is placed between the first roller 1 and the third roller 3. It will be in a free state at least once before it is caught, The guide stopper mechanism 8 corrects the direction straight. Straightening The corrected sheet P is gripped between the first roller 1 and the third roller 3, It is folded in two horizontally along the first bending end portion Fa that is orthogonal to the feeding direction. side In the sheet P folded in half, the first flexible end portion Fa serves as the forward end. It is guided by the second guide stopper mechanism 9. The paper P has its first flexure The state in which the end Fa contacts the stopper S2 of the second guide stopper mechanism 9 When further fed by, the third roller 3 and the fourth roller 4 constitute The second sheet folding mechanism 7 starts to bend toward the second sheet folding mechanism 7 side (see FIG. 2C). The end portion Fb is held between the third roller 3 and the fourth roller 4 and It is folded in three and sent out in the direction of arrow B. In another example, the first Provide a guider 12 as shown by the dotted line on the exit side of the paper folding mechanism 6 of FIG. For example, the device may be a device that folds the paper P in two in the horizontal direction.

[0007]   FIG. 3A is a schematic side view showing a modified example of the paper folding device according to the present invention. is there. In this figure, the paper folding device includes a first roller 1 and a second roller 2. , A third roller 3 and a fourth roller 4, the first roller 1 and the second roller 4. Sheet feeding mechanism 5 constituted by a roller 2, the first roller 1 and the third roller 3 First paper folding mechanism 6 constituted by the rollers 3 and the first roller A second sheet folding mechanism 7 composed of the first and fourth rollers 4 and First and second guide stopper mechanisms 8 and 9 provided with the stoppers S1 and S2. It is equipped with and. In this device, in particular, the first roller 1 and The paper P is fed to the paper feeding mechanism 5 composed of the second roller 2. During the feeding period, the sheet is regulated to be advanced by the guide stopper mechanism 8. At the beginning of bending, the bending end portion Fa is gripped between the first roller 1 and the third roller 3. Before being inserted, the feeding of the paper P is intermittently released to prevent the paper P from being skewed. A skew feeding correcting mechanism 10 for correcting is provided. In the specific embodiment shown in FIG. 3A The skew correction mechanism 10 includes a plurality of pairs of protrusions 11 provided on the first roller 1. Is configured. The plurality of pairs of protrusions 11 extend outward from the peripheral surface of the first roller 1. The width of the paper W outside the predetermined angle. They are set apart. The skew feeding correction mechanism 10 described above is configured as a drive roller. The first roller 1 and the second roller 1 are rotated during one rotation period of the first roller 1. The edge of the sheet P is intermittently separated from the sheet 2, and the feeding of the sheet P is intermittently released. ing.

[0008]   FIG. 3B shows another embodiment of the skew feeding correcting mechanism 10. Shown in this figure In the example, the skew correction mechanism 10 is configured to It is constituted by a plurality of half cut portions 13 provided along the direction. The plurality of The half cut portion 13 is provided on the peripheral surface of the first roller 1 at a predetermined angular interval. There is a mark. The skew feeding correcting mechanism 10 includes the first roller configured as a driving roller. During one rotation of the roller 1, there is an intermittent gap between the first roller 1 and the second roller 2. A space is formed in the space, and the feeding of the sheet is intermittently released.

[0009]

[Effect of device]

  The paper folding device of the present invention having the above structure is an extremely simple pure mechanical device. As a storage device, it does not require complicated timing settings. Also has the advantage of being easy to handle, such as reducing failures. It can be said that it does. Further, the paper folding device according to the present invention has a pair of rollers. To the paper feeding mechanism configured by The paper is restricted by the guide stopper mechanism and begins to bend, and Before being held in the paper folding mechanism consisting of a pair of rollers, A skew feed correction mechanism 10 for intermittently canceling the feeding to correct the skew feed of the paper P is provided. By doing so, it is possible to surely correct the skew of the paper P and surely prevent the diagonal folding of the paper P. It can be said that it is extremely effective in that respect as well.

[Brief description of drawings]

FIG. 1 shows a specific embodiment of a sheet folding device according to the present invention, FIG. 1A is a schematic side view showing the overall structure, and FIG. It is a schematic side view seen from the arrow X direction.

FIG. 2 shows an example of a specific operation mode of the paper folding device according to the present invention. In FIG. 2A, the leading edge Pa of the paper P contacts the stopper S1 of the first guide stopper mechanism 8. 2 is a schematic side view showing a state, FIG.
2B is a schematic side view showing a state in which the sheet P starts to bend toward the first sheet folding mechanism 6 side, and FIG.
Shows a state in which the first bending end portion Fa of the paper P is further fed from the state where the first bending end portion Fa contacts the stopper S2 of the second guide stopper mechanism 9 and starts to bend toward the second paper folding mechanism 7 side. It is a schematic side view.

FIG. 3 shows another embodiment of the paper folding device according to the present invention, FIG. 3A is a schematic side view showing an example of the paper folding device having a different structure, and FIG.
It is a schematic side view which shows a different example of a skew feeding correction mechanism.

FIG. 4A and FIG. 4B are schematic side views showing two different basic configuration examples of a conventional sheet folding device.

[Explanation of symbols]

1 first roller 2 second roller 3 Third roller 4th roller 5 Paper feeding mechanism 6 First paper folding mechanism 7 Second paper folding mechanism 8 First guide stopper mechanism 9 Second guide stopper mechanism 10 Skew correction mechanism 11 protrusions 12 Guider 13 Half cut part P paper Pa advance tip Fa first flexible end Fb second flexible end S1, S2 stopper

Claims (3)

[Scope of utility model registration request] 1. A paper feeding mechanism including a first roller and a second roller which are combined to feed a paper in one direction in cooperation with each other, and a paper feeding mechanism located on the paper feeding side of the first and second rollers. , A stopper that receives the fed-out sheet and regulates the advance of the sheet at a preset sheet-feeding-out position, and causes the sheet to bend in a predetermined direction when the sheet is further fed out. And a third roller that cooperates with the first roller to hold the flexible end portion of the sheet oriented by the guide stopper mechanism and fold the sheet. In a paper folding device including a paper folding mechanism, a paper feeding mechanism including the first roller and the second roller is provided. During the sheet feeding period, the sheet is regulated by the guide stopper mechanism and starts to bend, and the sheet is fed to the sheet before the bent end portion is gripped between the first roller and the third roller. A sheet folding device comprising a skew feeding correction mechanism for intermittently releasing the sheet to correct the skew feeding of the sheet. 2. A plurality of the skew feeding correction mechanisms provided on one of the first roller and the second roller at a position outside a width dimension of a sheet at a predetermined angular interval. It is composed of a pair of protrusions, and intermittently separates the edge between the first roller and the second roller during one rotation period of the roll, and intermittently releases the feeding of the sheet. The sheet folding device according to claim 1. 3. The skew feeding correcting mechanism comprises a half cut extending along a generatrix direction at a predetermined angular interval on either the first roller or the second roller, 2. The space between the first roller and the second roller is intermittently formed during one rotation period of the roll to intermittently cancel the feeding of the sheet. Paper folding device.