JP2006044919A - Cylinder of folding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder of a folding machine for improving folding accuracy of a section, by preventing the section from being partially pushed in a cutout part formed on a cylinder surface. <P>SOLUTION: The cutout part 4b formed in the axial direction of a folding cylinder 1 opposed to an insertion knife 10 existing in a parallel one-time folding position, and the cutout part 4c formed in the axial direction of the folding cylinder 1 opposed to the insertion knife 10 existing in a delta folding position, are formed over the substantially whole area in the width direction of a sheet-like material on a guide surface 4 formed on a peripheral surface of the folding cylinder 1 and guiding the sheet-like material held by a needle 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cylinder of a folding machine such as a folding cylinder or a holding cylinder installed in a folding machine of a rotary printing press.

  2. Description of the Related Art Conventionally, a rotary printing press is provided with a folding machine that cuts a web that has been dried and cooled after printing into a predetermined length or folds the web in a width direction or a length direction. In this folding machine, one-fold, or approximately 1/3 of the cut web is folded by parallel 1-fold, and the remaining approximately 2/3 is folded in half by parallel 2-fold, winding (delta folding), etc. It is common to switch the folding specification. A cylinder for folding the web is installed in the folding machine. By adjusting the distance between the needle and the knife provided on the outer periphery of the cylinder, the folding specification can be changed. . For example, a folding machine disclosed in Japanese Utility Model Publication No. 7-54205 is provided with such a cylinder. This folding machine can perform parallel 1-fold, 2-fold and delta folding.

  5 shows a cylinder arrangement of a parallel folding device of a folding machine according to a conventional example, FIG. 6 shows a side sectional view of the folding cylinder in FIG. 5, and FIG. .

  As shown in FIG. 5, after printing, the cooled and dried web 101 is guided to a parallel folding device 102. The parallel folding device 102 includes a cutting cylinder 103, a folding cylinder 104, a first holding cylinder 105, and a second holding cylinder 106. These cylinders 103 to 106 are driven and rotated in synchronization with the directions indicated by the arrows in the figure.

  The cutting cylinder 103 is provided with one cutting blade 107 in the circumferential direction for cutting the web 101 into predetermined dimensions. A plurality of needles 108 as holding members arranged in the axial direction of the folding cylinder 104 are provided on the outer periphery of the folding cylinder 104. An insertion knife 109 is provided on the outer periphery of the folding cylinder 104. The diameter of the folding cylinder 104 is twice that of the cutting cylinder 103, and the needle 108 and the insertion knife 109 are provided at positions that bisect in the circumferential direction.

  A plurality of first holding plates 110 arranged in parallel in the axial direction of the first holding cylinder 105 are provided on the outer periphery of the first holding cylinder 105. An insertion knife 111 is provided on the outer periphery of the first holding cylinder 105. The diameter of the first holding cylinder 105 is 1.5 times that of the folding cylinder 104 (3 times that of the cutting cylinder 103), and the first holding plate 110 and the insertion knife 111 are 3 etc. in the circumferential direction. Each is provided at a position to be divided.

  A plurality of second holding plates 112 arranged in parallel in the axial direction of the second holding cylinder 106 are provided on the outer periphery of the second holding cylinder 106. The diameter of the second holding cylinder 106 is the same as the diameter of the folding cylinder 104, and the second holding plate 112 is provided at a position that bisects in the circumferential direction.

  A guide brush 113 for guiding the cut web 101 is installed above the folding cylinder 104 and the first holding cylinder 105.

  The folding cylinder 104 includes a needle cylinder 104a rotatably supported on a folding cylinder shaft 104b on a frame (not shown), and a knife cylinder 104c rotatably supported on the folding cylinder shaft 104b. It is configured as follows. As shown in FIG. 6, the needle 108 is supported by a needle support shaft 115 extending in the axial direction of the folding cylinder 104 via a needle holder 114. The both ends of the needle support shaft 115 are supported by the needle cylinder 104a. The needle cylinder 104a is provided with a needle cover 116 that covers the needle 108. The insertion knife 109 is supported by a knife support shaft 118 extending in the axial direction of the folding cylinder 104 via a knife holder 117. Both ends of the knife support shaft 118 are supported by the knife cylinder 104c. The knife cylinder 104c is rotatably supported by the folding cylinder shaft 104b of the folding cylinder 104. The knife cylinder 119 is provided with a knife cover 119 that covers the insertion knife 109.

  A belt 120 for guiding the cut web 101 is installed below the folding cylinder 104.

  Therefore, the knife cylinder 104c in which the insertion knife 109 is provided with respect to the needle cylinder 104a in which the needle 108 is provided is rotatable around the folding cylinder shaft 104b. That is, the positional relationship between the needle 108 and the insertion knife 109 is adjusted by the rotation of the knife cylinder 104c with respect to the needle cylinder 104a.

  The position, that is, the phase of the needle 108 and the insertion knife 109 can be adjusted by the rotation of the knife cylinder 104c. At the time of phase adjustment at this time, as shown in FIG. 7, each of the knife covers 119 swings so as to enter between the needle covers 116 (the knife cover 119 is moved from the position a to the position b. Will move). Alternatively, each of the knife covers 119 swings so as to be separated from each of the needle covers 116 (the knife cover 119 moves from the position b to the position a).

  With such a configuration, phase adjustment can be performed, and parallel 1 diffraction, parallel 2 diffraction, and delta folding are possible.

  In the case of parallel one-folding, approximately half of the cutting web conveyance direction length is pushed by the insertion knife 109 of the folding cylinder 104 and added to the first holding plate 110 of the first holding cylinder 105. By cutting, the cutting web is folded into a signature. Thereafter, the signature is changed between the first holding plate 110 of the first holding cylinder 105 and a claw (not shown) of the second holding cylinder 106, so that the signature with one parallel folding is obtained. It is conveyed as a (folded signature).

  Further, in the case of two parallel folds, approximately half of the length of the cutting web in the conveying direction is pushed by the insertion knife 109 of the folding cylinder 104 and the first holding plate 110 of the first holding cylinder 105 is pressed. The cutting web is folded and turned into a signature by replacing it. Thereafter, the signature is held by the first holding plate 110 of the holding cylinder 105, and approximately half of the length of the signature in the conveying direction is pushed by the insertion knife 111 of the first holding cylinder 105. Further, when the second holding cylinder 106 is replaced with the second holding plate 112, it is further folded and conveyed as a parallel two-folded signature (four-folded signature).

  Further, in the case of delta folding, approximately 1/3 of the length of the cutting web in the conveying direction is pushed by the insertion knife 109 of the folding cylinder 104 and is replaced by the first holding plate 110 of the first holding cylinder 105. By doing so, the cutting web is folded into a signature. Thereafter, the signature is held by the first holding plate 110 of the holding cylinder 105, and approximately half of the length of the signature in the conveying direction is pushed by the insertion knife 111 of the first holding cylinder 105. The second holding cylinder 106 and the second holding plate 106 are further changed to be folded and conveyed as a delta-folded signature (three-folded signature).

No. 7-54205

  As described above, it is necessary to adjust the interval between the needle 108 of the folding cylinder 104 and the insertion knife 109 when switching between parallel parallel bending and delta folding. However, in the conventional folding machine, as shown in FIG. 7, when the knife cover 119 is located at the position b (during delta folding), the belt 120 is positioned on the knife cover 119, and Is not partially pushed between the knife covers 119 and there is no problem in folding accuracy, but when the knife cover 119a is located at the position a (during parallel 1 diffraction), the knife covers 119 are not The belt 120 enters and the signature is partially pushed. As described above, when the signature placed on the opening is partially pushed by the belt 120, the signature is formed in a wave shape or wrinkles or folds are generated. In this state, if the insertion knife 109 is inserted into a signature to be folded, there arises a problem that folding accuracy is deteriorated.

  On the other hand, when switching between parallel two-folding and delta folding, it is necessary to adjust the distance between the first holding plate 110 and the insertion knife 111 of the first holding cylinder 105, so the folding cylinder 104 Also in the first holding cylinder 105 configured similarly to the above, the problem of the folding cylinder 104 described above occurs.

  Therefore, the present invention solves such a problem, and prevents the signature from being partially pushed into the notch formed on the trunk surface, and improves the folding accuracy of the signature. The purpose is to provide a torso.

The body of the folding machine according to the first invention for solving the above-mentioned problems is
Holding means for holding the sheet-like material supported and conveyed by the trunk body;
In a cylinder having a knife that is supported by moving means that moves between a first folding position and a second folding position with respect to the cylinder body, and that folds the sheet-like object,
A guide surface that is formed on the circumferential surface of the barrel and guides the sheet-like material held by the holding means;
A first notch formed in the axial direction of the trunk body so that the knife in the first folding position protrudes and appears on the guide surface;
A second notch formed in the axial direction of the trunk body so that the knife in the second folding position appears and disappears;
The first cutout portion and the second cutout portion are formed in substantially the entire width direction of the sheet-like material.

The cylinder of the folding machine according to the second invention for solving the above-mentioned problems is
In the case of the folding machine according to the first invention,
The knife rotates between the first cutout portion and the second cutout portion on the inner side with respect to the peripheral surface of the guide surface.

  According to the cylinder of the folding machine according to the first invention, the holding means for holding the sheet-like material supported and conveyed by the cylinder main body, the first folding position and the second folding position with respect to the cylinder main body. And a guide surface that is formed on a peripheral surface of the cylinder and guides the sheet-like object held by the holding means. A first notch formed in the axial direction of the trunk body so that the knife at the first folding position appears and disappears on the guide surface, and the knife at the second folding position appears and disappears. The second notch portion formed in the axial direction of the trunk body, and the first notch portion and the second notch portion are substantially the entire width direction of the sheet-like material. By forming the sheet-like material in the width direction by the guide brush or belt. Because it is pressed in the state, there is no risk of wrinkles or bending occurs. Therefore, it is possible to prevent the sheet-like material from being partially pushed into the first and second cutout portions formed on the body surface, and to improve the folding accuracy of the sheet-like material.

  According to the cylinder of the folder according to the second invention, in the cylinder of the folder according to the first invention, the knife is between the first notch and the second notch, By rotating the inner side with respect to the peripheral surface of the guide surface, there is no need to install the needle cover and the knife cover on the trunk body as in the prior art, so that a plurality of openings are not formed. That is, there is no fear that the sheet-like material is partially pushed by the plurality of openings, and no wrinkles or folds are generated. Therefore, the folding accuracy of the sheet-like object can be improved.

  FIG. 1 is a side cross-sectional view of a folding cylinder according to an embodiment of the present invention, and FIG. The folding cylinder shown in these figures is applied to a folding cylinder similar to the conventional folding cylinder shown in FIG. In addition, the same code | symbol is used for the part corresponding to each part of FIG. 6, and description of those parts is abbreviate | omitted.

  As shown in FIG. 1, the folding cylinder 1, which is a cylinder, is disposed between the cutting cylinder 103 and the first holding cylinder 105. The folding cylinder 1 is composed of a needle cylinder 2 that is a trunk body and a knife cylinder 3 that is a moving means. The needle cylinder 2 is supported by a frame (not shown) so as to be rotatable around the folding cylinder shaft 1a, and the knife cylinder 3 is supported by the folding cylinder shaft 1a so as to be rotatable. The needle cylinder 2 is provided with a guide surface 4 for guiding the cut web 101, that is, a signature as a sheet. That is, the outer peripheral surface of the folding cylinder 1 is constituted by the guide surface 4 and the needle cylinder 2.

  The needle cylinder 2 is extended with a needle support shaft 5 supported at both end faces thereof. A plurality of needles 7 which are holding means for holding a signature are supported on the needle support shaft 5 via a needle holder 6. The knife cylinder 3 is extended with knife support shafts 8 supported at both end faces thereof. An insertion knife 10 is supported on the knife support shaft 8 via a knife holder 9.

  Notches 4a, 4b, and 4c are formed in the guide surface 4 along the axial direction of the folding cylinder shaft 1a and substantially in the entire width direction of the signature. These are formed as the notches 4c, 4b, and 4a from the rotational direction of the folding cylinder 1, the notch 4b being the first notch, and the notch 4c being the second notch. It becomes a missing part.

  The notch 4a is a hole used when adjusting the swing position of the insertion knife 10. The notch 4b is a hole used by the insertion knife 10 when the signature is folded once. In this case, the insertion knife 10 has a radius of the folding cylinder 1 from the notch 4b. It swings toward the outside in the direction, and the signature is inserted. The notch 4c is a hole used by the insertion knife 10 when the signature is delta-folded. In this case, the insertion knife 10 is located radially outside the folding cylinder 1 from the notch 4c. Oscillates toward and inserts a signature.

  That is, the position of the insertion knife 10 when the signature is folded once is at a position facing the notch 4b. The position of the insertion knife 10 when the signature is delta-folded is at a position facing the notch 4c. That is, the insertion knife 10 supported by the knife cylinder 3 can swing between the notch 4b and the notch 4c by the rotation of the knife cylinder 3.

  A case will be described in which a parallel one-fold signature is formed in such a cylinder arrangement. When each cylinder rotates and the web 101 is fed between the cutting cylinder 103 and the folding cylinder 1, the web 101 is cut into predetermined sizes by the cutting blade 107 (see FIG. 5). The At the same time, the web 101 following the cutting line is held by the needle 7 and wound around the lower half circumferential surface of the folding cylinder 1, and the paper bottom end is cut by the cutting blade 107 in the same manner as described above. Is done. The cutting web held by the needle 7 is wound around the folding cylinder 1 until a half of the length of the cutting web reaches a contact point between the folding cylinder 1 and the first holding cylinder 105. . Since the insertion knife 10 and the first holding plate 110 face each other, approximately a half of the cutting web is inserted by the insertion knife 10 and is held by the first holding plate 110. At this time, the cutting web is folded around the upper peripheral surface of the first holding cylinder 105 while being folded in half.

  A signature held on the first holding plate 110 of the first holding cylinder 105 is a claw (not shown) of the second holding cylinder 112 at a contact point between the first holding cylinder 105 and the second holding cylinder 106. The gripper is replaced, and it becomes a parallel one-fold signature, and is discharged on the lower peripheral surface of the second gripper cylinder.

  Similarly, a case where a delta folded signature is formed in such a cylinder arrangement will be described. When each cylinder rotates and the web 101 is fed between the cutting cylinder 103 and the folding cylinder 1, the web 101 is cut into predetermined sizes by the cutting blade 107 (see FIG. 5). The At the same time, the web 101 following the cutting line is held by the needle 7 and wound around the lower half circumferential surface of the folding cylinder 1, and the paper bottom end is cut by the cutting blade 107 in the same manner as described above. Is done. The cutting web held by the needle 7 is wound around the folding cylinder 1 until a portion of approximately 2/3 in the length direction reaches the contact point between the folding cylinder 1 and the first holding cylinder 105. . Since the insertion knife 10 and the first holding plate 110 face each other, approximately 2/3 of the cutting web is inserted by the insertion knife 10 and is held by the first holding plate 110. At this time, the cutting web is folded around the upper peripheral surface of the first holding cylinder 105 while being folded in half.

  The signature held on the first holding plate 110 of the first holding cylinder 105 has a substantially half portion in the length direction between the first holding cylinder 105 and the second holding cylinder 106. It is wound around the first holding cylinder 105 until the contact point is reached. Since the insertion knife 111 and the second holding plate 112 face each other, a substantially central portion of the signature is inserted by the insertion knife 111 and held by the second holding plate 112. At this time, the signature is wound around the second holding cylinder 106 while being folded for the second time, becomes a delta folded signature, and is discharged on the lower peripheral surface of the second holding cylinder. Become.

  Therefore, the guide surface 4 is installed on the needle cylinder 2, and the guide surface 4 is formed in the entire axial direction of the folding cylinder shaft 1a facing the insertion knife 10 at a position where the signature is bent once. The notch portion 4b to be formed and the notch portion 4c formed in the entire axial direction of the folding cylinder shaft 1a facing the insertion knife 10 at the position where the signature is delta-folded are provided in parallel. Since the belt 120 does not face the notch (between the knife cover 119 in the prior art) at the time of one turn or delta folding, the belt 120 is not partially pushed in. That is, since the signature is guided to the guide surface 4 by the belt 120, the signature is pushed in the same state in the width direction, and there is no possibility that wrinkles or creases occur. As a result, the folding accuracy is improved without adversely affecting the folding accuracy.

  FIG. 3 shows a cutaway plan view of the main part of the folding cylinder, and FIG.

  The folding cylinder 1 is supported on the frames 12a and 12b via a rotating shaft 11. The end 11a of the rotating shaft 11 is supported by the frame 12a via a cam holder 13 having a bearing (not shown) inside. The cam holder 13 is provided with a circular (annular) needle cam 14 having an outer peripheral surface (cam surface) having a predetermined shape. A cam follower 16 attached to the lever 15 is in contact with the outer peripheral surface of the needle cam 14. The lever 15 is rotatably supported by the needle support shaft 5 supported by the needle cylinder 2.

  A drive gear 17 is installed at the end 11b of the rotary shaft 11 supported on the frame 12b side. The rotary shaft 11 is configured to rotate the needle cylinder 2 by a drive motor 18 that drives the machine via the drive gear 17. A knife cylinder drive gear 19 is provided inside the drive gear 17, and this knife cylinder drive gear 19 is supported by a ring-shaped rotating shaft holder 21. The rotating shaft holder 21 supports the knife cylinder 3. The knife cylinder drive gear 19 is connected to the drive gear 17 via a phase adjustment speed reducer 27 that is rotatably supported by a phase adjustment motor 20.

  A bearing 22 is installed on the outer peripheral surface of the rotary shaft holder 21. A ring-shaped cam holder 23 is installed on the outer peripheral surface of the bearing 22. At the end of the cam holder 23 on the folding cylinder 1 side, a circular (annular) knife cam 24 having an outer peripheral surface (cam surface) having a predetermined shape is installed. A cam follower 26 attached to the lever 25 is in contact with the outer peripheral surface of the knife cam 24. The lever 25 is rotatably supported by the knife support shaft 8 supported by the knife cylinder 3.

  By adopting the above-described configuration, the phase adjustment motor 20 is stopped and the driving motor 18 is driven during normal operation (at the time of parallel 1 diffraction, at the time of parallel 2 diffraction, and at the time of delta folding). The needle cylinder 2 is rotated by the rotation of the drive gear 17, and the knife cylinder drive gear 19 is rotated through the phase adjusting speed reducer 27, whereby the knife cylinder 3 is rotated. At this time, since the phase adjusting speed reducer 27 transmits the rotation of the drive gear 17 to the knife cylinder drive gear 19 at a ratio of 1: 1, the drive gear 17 and the knife cylinder drive gear 19 have the same rotational speed. Rotate with. That is, since the needle cylinder 2 and the knife cylinder 3 are rotated at the same rotational speed, the needle 7 and the insertion knife 10 are kept at a predetermined distance from each other and the web 101 is cut. It can be transported to the mouth cylinder 105.

  On the other hand, when the interval between the needle 7 and the insertion knife 10 is changed (when switching between parallel parallel diffraction and delta folding), the phase adjusting motor 20 is driven to reduce the phase adjusting deceleration. A slight rotational difference is generated between the drive gear 17 and the knife cylinder 19 due to the deceleration action of the machine 27. Thereby, the said insertion knife 10 can be rotationally moved between the said notch parts 4b and 4c. After the movement, when the phase adjusting motor 20 is stopped, the knife cylinder 3 is rotated at the same rotational speed as the needle cylinder 2.

  The drive gear 17 meshes with a cutting gear (not shown) provided on the cutting cylinder 103, and the knife cylinder driving gear 19 is connected to a first holding cylinder gear (not shown) provided on the first holding cylinder 105. Are engaged. The drive of the drive motor 18 is transmitted to the cutting gear via the drive gear 17 and to the first gripper gear via the knife cylinder drive gear 19. As a result, each of the cylinders 1, 103, 105 can be easily controlled.

  When the needle cylinder 2 rotates, the cam follower 16 attached to the lever 15 rolls along the outer peripheral surface of the needle cam 14 as the needle cylinder 2 rotates, and the shape of the needle cam 14 is increased. Accordingly, the folding cylinder shaft 1a swings in the radial direction. The needle support shaft 5 swings at a predetermined cycle in conjunction with the swing of the cam follower 16. That is, the needle 7 supported by the needle support shaft 5 can swing in the radial direction of the folding cylinder shaft 1a. Further, when the cam follower 16 contacts the apex of the cam crest of the needle cam 14, the needle 7 swings to the deepest position from the surface of the needle cylinder 2.

  Similarly, when the knife cylinder 3 rotates, the cam follower 26 attached to the lever 25 rolls along the outer peripheral surface of the knife cam 24 as the knife cylinder 3 rotates, and the knife cam According to the shape of 24, the folding cylinder shaft 1a swings in the radial direction. The knife support shaft 8 swings at a predetermined cycle in conjunction with the swing of the cam follower 26. That is, the insertion knife 10 supported by the knife support shaft 8 can swing the folding cylinder shaft 1a in the radial direction. Further, when the cam follower 26 comes into contact with the top of the cam crest of the knife cam 24, the insertion knife 10 is swung to the deepest position from the surface of the knife cylinder 3.

  Further, when adjusting the phase between the needle cylinder 2 and the knife cylinder 3, the phase adjusting motor 20 is driven. As a result, only the knife cylinder 3 can rotate while the needle cylinder 2 is stopped, so that phase adjustment is possible. At the time of phase adjustment, the phase adjustment is performed in advance when the insertion knife 10 rotates from a position facing the notch 4b to a position facing the notch 4c and in the opposite direction. A phase adjustment range of the motor 20 is set so that the knife cylinder drive gear 19 can be rotated forward or backward. Further, during the phase rotation of the knife cylinder 3, the phase of the knife cylinder 3 is adjusted so that it is at a position lower than the insertion knife 10 and the surface of the knife cylinder 3.

  The insertion knife 10 rotates and moves inwardly with respect to the surface of the needle cylinder 2 between the notch 4b and the notch 4c, so that the needle cover and the knife cover are attached to the trunk body. There is no need to install, and there is no need to form a plurality of openings. That is, there is no fear that the signature is partially pushed in, and no wrinkles or creases occur. As a result, folding accuracy is improved.

  Therefore, the guide surface 4 is installed on the needle cylinder 2, and the guide surface 4 is formed in the entire axial direction of the folding cylinder shaft 1a facing the insertion knife 10 at a position where the signature is bent once. The notch portion 4b and the notch portion 4c formed in the entire axial direction of the folding cylinder shaft 1a facing the insertion knife 10 at the position where the signature is delta-folded. Even if the belt 120 is partially pushed in, the same state is obtained in the width direction with respect to the signature, so that there is no risk of wrinkling or folding. As a result, folding accuracy is improved.

  Further, the insertion knife 10 is rotationally moved on the inner side in the radial direction of the folding cylinder 1 with respect to the surface of the needle cylinder 2 between the notch portion 4b and the notch portion 4c. Since the needle cover and the knife cover do not need to be installed on the trunk body, a plurality of openings are not formed. That is, there is no fear that the signature is partially pushed in, and no wrinkles or folds occur. As a result, folding accuracy is improved.

  The configuration used for the folding cylinder according to this embodiment can also be applied to the first holding cylinder 105, and the interval between the first holding plate 110 and the insertion knife 111 can be adjusted. it can. This prevents the signature from being partially pushed into the notch formed on the surface of the first gripping cylinder 105 even when switching between parallel two-folding and delta folding. Accuracy can be improved.

  It is effective when applied to a cylinder of a folding machine of a printing press using various differential devices.

It is side surface sectional drawing of the folding cylinder which concerns on one Example of this invention. It is A arrow directional view in FIG. It is a principal part notched top view of a folding cylinder. It is the figure which showed the mode of the rocking | fluctuation of the insertion knife in the BB sectional drawing in FIG. It is a trunk | drum arrangement | sequence figure of the parallel folding apparatus of the folding machine which concerns on one conventional Example. It is side surface sectional drawing of the folding cylinder in FIG. It is C arrow line view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding cylinder 1a Folding cylinder axis | shaft 2 Needle cylinder 3 Knife cylinder 4 Guide surface 4a-c Notch part 5 Needle support shaft 6 Needle holder 7 Needle 8 Knife support shaft 9 Knife holder 10 Insertion knife 11 Rotating shafts 11a and 11b End part 12a, 12b Frame 13 Cam holder 14 Needle cam 15 Lever 16 Cam follower 17 Drive gear 18 Drive motor 19 Knife cylinder drive gear 20 Phase adjustment motor 21 Rotating shaft holder 22 Bearing 23 Cam holder 24 Knife cam 25 Lever 26 Cam follower 27 Phase adjustment Reducer for

Claims (2)

Holding means for holding the sheet-like material supported and conveyed by the trunk body;
In a cylinder having a knife that is supported by moving means that moves between a first folding position and a second folding position with respect to the cylinder body, and that folds the sheet-like object,
A guide surface that is formed on the circumferential surface of the barrel and guides the sheet-like material held by the holding means;
A first notch formed in the axial direction of the trunk body so that the knife in the first folding position protrudes and appears on the guide surface;
A second notch formed in the axial direction of the trunk body so that the knife in the second folding position appears and disappears;
The first notch portion and the second notch portion are formed in substantially the entire width direction of the sheet-like material. In the case of the folding machine according to claim 1,
The body of the folding machine, wherein the knife rotates between the first cutout portion and the second cutout portion inward with respect to the peripheral surface of the guide surface.

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