JP4417678B2 - Sheet holding device - Google Patents

Description

  The present invention, for example, in a sheet-fed rotary printing press with a reversing mechanism, causes a nail with a paper bottom from an upstream cylinder to fall down in a notch of the cylinder during double-sided printing, and replaces the paper with an adjacent nail. The present invention relates to a sheet holding device.

A conventional sheet holding device has a cam lever shaft rotatably supported by a reversing cylinder, a shaft gear mounted on the cam lever shaft, a segment gear provided on one free end, and a free end on the other free end. A cam lever to which a cam follower is pivotally mounted, two claw base shafts to which a pinion meshing with a segment gear is fixed, a cam fixed to a frame and in contact with the cam follower, and rotation of the two claw base shafts It has two gripper devices that move together. Then, when the cam follower rides on the large diameter portion of the cam, the cam lever swings, and the pinion meshing with the segment gear rotates, so that the claw base shaft also rotates integrally, and the two holding claw devices Will be in the state where it has occurred in the notch of the reversing cylinder and lying down, and the paper will be replaced between the two holding claw devices in the lying state (see, for example, Patent Document 1). In addition, the applicant could not find any prior art documents closely related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in the present specification. .
Japanese Examined Patent Publication No. 6-41202 (page 4, right column, line 35 to page 5, left column, line 10 and page 5, right column, lines 4 to 17, lines 4, 8 and 9)

  In the conventional sheet-like material holding device described above, when the cam lever stops at the swing end of the cam lever, the segment gear attached integrally with the cam lever also stops swinging. However, the pinion that meshes with the segment gear and rotates following the swing of the segment gear tends to rotate by inertia even after the segment gear stops. For this reason, there is a problem in that a load is applied to the teeth of the pinion and the segment gear which are engaged with each other, and durability is lowered. Also, when the cam lever starts swinging, the start of swinging of the segment gear is delayed by the load of the pinion whose rotation has stopped. There was also a problem that poor replacement occurred.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to improve the durability of the component parts and prevent the occurrence of a paper holding defect.

In order to achieve this object, the invention according to claim 1 is the first position for receiving the sheet-like material from the upstream side in the sheet-like material conveyance direction, and the first position for delivering the sheet-like material to the downstream side in the sheet-like material conveyance direction. And a sheet holding means supported so as to be swingable between the first position and the second position, and supports the sheet holding means, and is supported so as to be rotatable so that the sheet holding means is positioned at the first position and the second position. A sheet-like object holding device provided with a claw base shaft rotated so as to swing between the sheet holding means and the sheet holding means for assisting the swinging when the sheet holding means starts swinging. so they brake the said sheet holding means at the time of stopping, provided with biasing means for beyond dead center between said second position and said first position, said biasing means, said gripper pad The shaft rotates in the same direction as the rotation direction of the sheet holding means. A fixed lever, a biasing member for biasing the lever, the biasing means is to vary the biasing direction before and after the exceeding dead center with respect to the rotational direction of said sheet holding means.
According to a second aspect of the present invention, in the first aspect of the invention, a pair of the sheet holding means are provided adjacent to each other, and one of the sheet holding means is raised at the first position. The other sheet holding means is supported in such a manner that it can be laid down at the first position, and the other sheet holding means is supported in a undulating manner so as to be in the state where it has been raised at the second position. The sheet-like material is transferred between the one sheet holding means positioned at the second position and the other sheet holding means positioned at the first position .
The invention according to claim 3 is the invention according to claim 1, wherein the urging means further includes a swing lever having one end pivotally attached to the lever, and the urging member has one end. The tension coil spring is attached to the other end of the swing lever, and the tension coil spring biases the lever via the swing lever .
The invention according to claim 4 is the invention according to claim 1, further comprising a cam, a cam lever that swings by the cam, and a gear device that rotates the claw base shaft by swinging the cam lever. It is.

  ADVANTAGE OF THE INVENTION According to this invention, while improving durability of a component, generation | occurrence | production of the paper replacement defect can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view showing a sheet-like material holding device according to the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. 1 is a cross-sectional view taken along line IV-IV in FIG. 1, FIG. 5A is a view taken in the direction of arrow V (a) in FIG. 1, FIG. 5B is a view taken in the direction of arrow V (b) in FIG. FIG. 4A is an enlarged front view, and FIG. 4A is a diagram for explaining an opening / closing operation of the claw (A) at the second position, and FIG. 4B is an opening / closing operation of the claw (A) at the first position. It is a figure explaining operation | movement.

  In FIG. 1, the reversing cylinder denoted by reference numeral 1 is rotatably supported by left and right frames 2 and 2 via bearings (both not shown). A pair of claw base shafts 3 </ b> A and 3 </ b> B (the claw base shaft 3 </ b> A is not shown) is rotatably supported on the reversing body 1 over the entire length of the reversing body 1, and one end side projects from the end surface of the reversing body 1. The pinions 4A and 4B (the pinion 4B is not shown) are pivotally attached to the protruding end portions. A plurality of claw shaft holders 5 are fixed to the claw base shafts 3A and 3B, and hollow claw shafts 6A and 6B are pivotally supported at both ends of the claw shaft holders 5 and 5 on both sides. Has been.

  As shown in FIG. 2, the claw base shaft 3B and the claw base shaft 6B have a gripping claw device (B) (hereinafter referred to as a claw (B)) as a sheet-like material holding means composed of a claw base 7 and a claw 8. ) 13 are juxtaposed in the axial direction in the outer circumferential notch 10 provided over the entire length of the body of the reversing body 1. The claw (B) 13 includes a claw base holder 11 fixed to the claw base shaft 3B and a claw that is combined with the claw base holder 11 so as to be in phase with the claw base holder 11 and fixed to the claw shaft 6B. Holder 12. A claw base 7 is fixed to the claw base holder 11, and a claw 8 that opens and closes with respect to the claw base 7 by the rotation of the claw holder 12 by an opening / closing mechanism described later is attached to the claw holder 12. As a sheet-like material holding means having the same configuration as the claw (B) 13 adjacent to the claw (B) 13 so as to be in phase with the claw (B) 13 in the axial direction in the outer circumferential notch 10 A plurality of gripping claw devices (A) (hereinafter referred to as claw (A)) 9 are arranged in parallel in the axial direction.

  As shown in FIG. 1, a cam lever 48 having first and second cam followers 46 and 47 for the claw (B) 13 pivoted on both ends is pivotally attached to the right protruding end of the claw shaft 6B. The bar holder 17 is fixed to the end surface of the claw shaft holder 5 on the opposite side where the cam lever 48 is not provided so as to be adjustable. Reference numeral 18 denotes a torsion bar in which a hexagonal head 18a at one end is fitted and fixed to a hexagonal hole of the bar holder 17, and the other hexagonal head 18b passes through the inner hole of the claw shaft 6B and the other end of the claw shaft 6B. The torsion spring force is accumulated in the torsion bar 18 when the cam lever 48 is rotated by an external force. As shown in FIG. 6, a cam lever 16 is pivotally attached to the left protruding end portion of the claw shaft 6 </ b> A of the claw (A) 9, and the first end for the claw (A) is attached to both ends of the cam lever 16. And second cam followers 15 and 14 are pivotally mounted.

  Next, a reversing mechanism for reversing the claw (A) 9 and the claw (B) 13 around the claw base shafts 3A and 3B will be described with reference to FIGS. Since the reversing mechanism for reversing the claw (A) 9 and the claw (B) 13 has the same structure, the mechanism for reversing the claw (B) 13 will be described in detail here, and if necessary, The nail (A) 9 will also be described.

  In FIG. 1, reference numeral 20 denotes a cam lever shaft, which is rotatably supported at one end portion of the reversing cylinder 1 via a bearing 21. The cam lever shaft 20 has a protruding end portion at the center of the cam lever 22. Part is pivoted. A segment gear 23B that meshes with a pinion 4B mounted on the claw base shaft 3B is fixed to one end of the cam lever 22, and a reversing cam for claw (B) fixed to the frame 2 is fixed to the other end. A reversing cam follower 25 that contacts the small diameter portion 24a and the large diameter portion 24b (see FIG. 5B) is pivotally attached. Reference numeral 26 denotes a torsion bar. A hexagonal head 26a at one end is fitted and fixed in a hexagonal hole of the cam lever shaft 20, so that a torsion spring force is accumulated in a direction in which the reversing cam follower 25 contacts the reversing cam 24. The other hexagonal head 26 b is fitted and fixed in a hexagonal hole of a stator 27 fixed to one end surface of the reversing body 1. The torsion spring force of the torsion bar 26 presses the reversing cam follower 25 against the claw (B) reversing cam 24.

  3, when the reversing cam follower 25 comes into contact with the large diameter portion 24b of the reversing cam 24, the cam lever 22 rotates about the cam lever shaft 20 in the clockwise direction in FIG. The pinion 4B meshing with the segment gear 23 rotates counterclockwise. Accordingly, the claw base shaft 3B also rotates counterclockwise integrally with the pinion 4B, and the claw (B) 13 in FIG. 2 is raised as shown by the solid line. Hereinafter, the state where the nail (B) 13 is raised is referred to as a first position of the nail (B) 13. On the other hand, in FIG. 3, when the reversing cam follower 25 comes into contact with the small diameter portion 24a of the reversing cam 24 for the claw (B), the cam lever 22 rotates about the cam lever shaft 20 in the counterclockwise direction in the figure. The pinion 4B meshing with the gear 23 rotates in the clockwise direction. Accordingly, the claw base shaft 3B is also rotated in the clockwise direction integrally with the pinion 4B, and the claw (B) 13 in FIG. 2 falls in the notch 10 as indicated by a two-dot chain line. Hereinafter, the state where the nail (B) 13 is lying down is referred to as a second position of the nail (B) 13.

  In FIG. 5A, reference numeral 40 denotes a reversing cam for the claw (A). A reversing cam follower (not shown) of the claw base shaft 3A is paired with the large diameter portion 40b of the reversing cam 40 for the claw (A). When in contact, the nail (A) 9 in FIG. 2 is raised as indicated by the solid line. Hereinafter, the state where the nail (A) 9 is raised is referred to as a second position of the nail (A) 9. On the other hand, when the reversing cam follower (not shown) of the claw base shaft 3A contacts the small diameter portion 40a of the reversing cam 40 for the claw (A), the claw (A) 9 in FIG. It will be in the state. Hereinafter, the state where the nail (A) 9 is lying down is referred to as a first position of the nail (A) 9. As will be described later, during the double-sided printing, the nail (A) 9 and the nail (B) 13 are synchronously laid down and the paper as a sheet is replaced.

  Next, the opening / closing mechanism of the claw (A) 9 and the claw (B) 13 will be described with reference to FIGS.

  FIG. 6A shows a state in which the claw (A) 9 is positioned at the second position. In this state, the second cam follower 14 is increased from the small diameter portion 28a of the second opening / closing cam 28 for the claw (A). When riding on the diameter portion 28b, the claw shaft 6A rotates counterclockwise in the figure, the claw 8 of the claw (A) 9 is opened, and the second cam follower 14 of the claw (A) second opening / closing cam 28 is opened. When descending from the large diameter portion 28b to the small diameter portion 28a, the claw shaft 6A rotates in the clockwise direction in the figure, and the claw 8 of the claw (A) 9 is closed. FIG. 2B shows a state in which the claw (A) 9 is positioned at the first position. In this state, the first cam follower 15 is moved from the small diameter portion 29a of the first opening / closing cam 29 for the claw (A). When riding on the diameter portion 29b, the claw shaft 6A rotates counterclockwise in the figure, the claw 8 of the claw (A) 9 opens, and the first cam follower 15 opens the claw (A) first opening / closing cam 29. When descending from the large diameter portion 29b to the small diameter portion 29a, the claw shaft 6A rotates in the clockwise direction in the figure, and the claw 8 of the claw (A) 9 is closed.

  In FIG. 5A, reference numerals 41 and 42 denote first and second opening / closing cams for the claw (B). The first cam follower 46 is in a state where the claw (B) 13 is positioned at the first position. The claw 8 of the claw (B) 13 opens when the claw (B) first opening / closing cam 41 rides on the large diameter part 41b from the small diameter part 41a. Further, when the first cam follower 46 descends from the large diameter portion 41b of the first opening / closing cam 41 for the claw (B) to the small diameter portion 41a with the claw (B) 13 positioned at the first position, The nail 8 of the nail (B) 13 is closed. On the other hand, when the second cam follower 47 rides on the large diameter portion 42b from the small diameter portion 42a of the second opening / closing cam 42 for the claw (B) with the claw (B) 13 positioned at the second position, The nail 8 of the nail (B) 13 is opened. Further, when the second cam follower 47 descends from the large diameter portion 42b of the second opening / closing cam 42 for the claw (B) to the small diameter portion 42a with the claw (B) 13 positioned at the second position, The nail 8 of the nail (B) 13 is closed.

  Next, with reference to FIG. 1 and FIG. 4, during the reversing operation of the claw (A) 9 and the claw (B) 13, the reversing assist assists the reversing operation at the start of reversing and brakes the reversing operation at the end of reversing. -Describe braking means. In addition, since the inversion assist / braking means of the claw (A) 9 and the claw (B) 13 have the same structure, only the claw (B) will be described here.

  Reference numeral 30 denotes a rotating lever that is pivotally attached to the claw base shaft 3B. One end of a swinging lever 32 is pivotally attached to the swinging end of the rotating lever 30 via a pin 31. A roller 34 is pivotally supported via a pin 33 and one end of a tension coil spring 35 is attached to the other end of the swing lever 32. Reference numeral 36 denotes a support block fixed to the reversing body 1. A guide groove 36 a formed in a U shape for guiding the roller 34 is provided on one end side, and a tension coil spring is attached to a stator 37 fixed to the other end portion. The other end of 35 is attached. The axial direction of the tension coil spring 35 is positioned at a neutral line 38 in a range in which the swing lever 32 swings about the pin 33 as the swing center when the claw base shaft 3B rotates.

  Accordingly, the tension coil spring 35 assists when the claw base shaft 3B rotates counterclockwise from the position indicated by the solid line in FIG. 4 and the claw (B) 13 starts to reverse. In this way, the rotating lever 30 is pulled through the swing lever 32. Therefore, since the start of the swing of the segment gear 23B is not delayed by the load of the pinion 4B whose rotation is stopped, the paper is held by two claws (A) 9 and claws (B) 13 which will be described later. The timing of replacement does not match, and it is possible to prevent the occurrence of defective paper replacement.

Tension coil spring 35, when the swing lever 32 is positioned at the neutral line 38, tensile force of the tension coil spring 35 in order to aid the rotation of the rotary lever 30 is relatively small. Then, when the neutral line 38 is exceeded, it acts to brake the rotation of the rotation lever 30, and in FIG. 4, the claw (B) 13 finishes reversing as indicated by the two-dot chain line in the swing lever 32. When this is done, this braking force is the largest. That is, the tension coil spring 35 acts to assist the reverse operation before the swing lever 32 exceeds the neutral line 38, and acts to brake the reverse operation after the dead point is exceeded. The force to assist is greatest when the reversing operation is started, gradually decreases as the claw base shaft 3B rotates, and the force to be braked is the smallest when the dead center is exceeded, and when the reversing ends. Is configured to be the largest.

  Therefore, when the claw (B) 13 finishes reversal by the braking action of the tension coil spring 35, the segment gear 23B gradually decreases the swing speed and stops. For this reason, the pinion 4B meshed with the segment gear 23B is also stopped by gradually reducing the rotation speed, so that when the segment gear 23B stops swinging, it receives an inertial force due to the rotation of the pinion 4B. Therefore, the load is not applied to the teeth of the segment gear 23B and the pinion 4B meshing with each other, so that the durability is improved.

  Next, using FIG. 5, the claw (A) reversing cam 40, the claw (B) reversing cam 24, the claw (A) 9, and the claw ( B) a second opening / closing cam 28 for the claw (A) for opening and closing the claw in each of the undulated states 13, a first opening / closing cam 29 for the claw (A), and a first opening / closing cam 41 for the claw (B) The claw (B) second opening / closing cam 42 and the claw (A) third opening / closing cam 43 will be described.

  The cam surface of the claw (B) reversing cam 40 is formed of a small diameter portion 40a, a large diameter portion 40b, an upward inclined surface 40c and a downward inclined surface 40d with respect to the rotational direction, as shown in FIG. Yes. As shown in FIG. 2B, the cam surface of the claw (A) reversing cam 24 is formed by a small diameter portion 24a, a large diameter portion 24b, an upward inclined surface 24c and a downward inclined surface 24d with respect to the rotation direction. Yes.

  The outer peripheral cam surface of the second opening / closing cam 28 for the claw (A) is formed by a small diameter portion 28a, a large diameter portion 28b, and an upward and downward inclined surface therebetween, as shown in FIG. The outer peripheral cam surface of the first opening / closing cam 29 for the claw (A) is formed by a small diameter portion 29a, a large diameter portion 29b, and an upward and downward inclined surface therebetween. Further, the outer peripheral cam surface of the claw (A) third opening / closing cam 43 is formed by a small diameter portion 43a, a large diameter portion 43b, and an upward and downward inclined surface therebetween. Furthermore, the outer peripheral cam surface of the first opening / closing cam 41 for the claw (B) is formed by a small diameter portion 41a, a large diameter portion 41b, and an upward and downward inclined surface therebetween, as shown in FIG. In addition, the outer peripheral cam surface of the second opening / closing cam 42 for the claw (B) is formed by a small diameter portion 42a, a large diameter portion 42b, and an upward and downward inclined surface therebetween.

  In such a configuration, in the case of single-sided printing, the claw (A) reversing cam 40, the claw (B) reversing cam 24, and the claw (A) second opening / closing are performed by a widely known device. The cam 29, the first opening / closing cam 41 for the claw (B), and the second opening / closing cam 42 for the claw (B) are deactivated, and the second opening / closing cam 28 for the claw (A) and the second opening / closing cam 28 for the claw (A). 3 open / close cam 43 is put into an operating state. In this state, when the gripper claw device (not shown) on the upstream side of the reversing cylinder 1 and the claw (A) 9 of the reversing cylinder 1 are opposed to each other, the second cam follower 14 is A) The claw (A) 9 is opened and closed by getting over the outer peripheral large diameter portion 43b of the third opening / closing cam 43, and the paper is replaced with the claw (A) 9. Further, when the reversing cylinder 1 rotates and the claw (A) 9 holding the paper faces a holding claw device (not shown) on the downstream cylinder, the second cam follower 14 is used for the claw (A). The claw (A) 9 is opened and closed by getting over the outer peripheral large-diameter portion 28b of the second opening and closing cam 28, and the paper is replaced by the gripper claw device on the downstream cylinder.

  Next, in the case of double-sided printing, the cams 40, 24, 29, 41, and 42, which have been deactivated in the case of single-sided printing, are brought into an activated state together with the cams 28 and 43. In this state, when the suction head (not shown) on the upstream side of the reversing cylinder 1 and the claw (B) 13 are opposed to each other, the first cam follower 46 is the first claw (B). The claw (B) 13 is opened by climbing over the large-diameter portion 41b of the open / close cam 41, and is closed when lowered to the small-diameter portion 41a, and the paper bottom is replaced by the suction head. When the reversing cylinder 1 is further rotated, the reversing cam follower 25 and the claw (A) cam follower (not shown) are inclined surfaces of the claw (B) reversing cam 24 and the claw (A) reversing cam 40. Go up 24c, 40c. Therefore, the cam lever 22 and the cam lever (not shown) for the claw (A) rotate against the torsion spring force of the torsion bar 26 and the torsion bar (not shown) for the claw (A), and the claw ( B) 13 and the claw (A) 9 rotate about the claw base shafts 3B and 3A so that the claws 8 and 8 come close to each other as shown by a two-dot chain line in FIG.

  Further, when the reversing cylinder 1 rotates, the first cam followers 15 and 47 of the cam levers 16 and 48 which are reversed with the rotation of the claw base shafts 3A and 3B are moved to the claw (A) second opening / closing cam 29 and the claw (B). The outer peripheral cam surface large-diameter portions 15 b and 47 b with the second cam 42 are overcome by cooperation with a torsion bar (not shown) for the claw (A) and the torsion bar 18. Therefore, since the nail (A) 9 and the nail (B) open and close at a moment, the paper bottom is changed from the nail (B) 13 to the nail (A) 9.

  When the reversing cylinder 1 further rotates, the reversing cam follower 25 and the claw (A) cam follower (not shown) are inclined downwardly between the claw (B) reversing cam 24 and the claw (A) reversing cam 40. Down the surfaces 24d and 40d, the claws (B) 13 and the claws (A) 9 are reversed in the reverse direction to return to the original postures. When the reversing cylinder 1 continues to rotate and the claw (A) 9 and the gripping claw device (not shown) on the downstream side of the reversing cylinder 1 face each other, it opens and closes by the same cam 28 operation as in single-sided printing. The paper bottom is replaced by a gripper device on the downstream side of the reversing cylinder 1.

  In the present embodiment, the nail of the printing cylinder has been described. However, the present invention can also be applied to a swing device that replaces the paper from the paper feeding device with the nail of the printing cylinder. Further, in the present embodiment, the sheet holding means is a gripper device, but a suction pad (suction member) that holds a sheet-like material may be used.

It is a top view which expand | deploys and shows the holding | maintenance apparatus of the sheet-like material concerning this invention. It is the II-II sectional view taken on the line in FIG. It is the III-III sectional view taken on the line in FIG. It is the IV-IV sectional view taken on the line in FIG. FIG. 5A is a view taken in the direction of arrow V (a) in FIG. 1, and FIG. 5B is a view taken in the direction of arrow V (b) in FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged front view showing a main part of a sheet-like material holding device according to the present invention, in which FIG. 1 (a) is a view for explaining an opening / closing operation of a claw (A) at a second position; (A) is a figure explaining the opening-and-closing operation | movement in the 1st position of a nail | claw (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Reverse cylinder, 3A, 3B ... Claw base axis | shaft, 4A, 4B ... Pinion, 5 ... Claw axis | shaft holder, 6A, 6B ... Claw axis | shaft, 7 ... Claw base, 8 ... Claw, 9 ... Claw device (A), 13 ... gripper device (B), 14 ... second cam follower, 15 ... first cam follower, 22 ... cam lever, 23B ... segment gear, 24 ... reversing cam for claw (B), 25 ... reversing cam follower, 28 ... 2nd opening / closing cam for claw (A), 29 ... 1st opening / closing cam for claw (A), 30 ... rotating lever, 32 ... swing lever, 34 ... roller, 35 ... tension coil spring, 36a ... guide groove 38 ... neutral line, 40 ... reversing cam for claw (A), 41 ... first opening / closing cam for claw (B), 42 ... second opening / closing cam for claw (B), 43 ... second for claw (A) 3 open / close cams, 46... First cam follower, 47... Second cam follower.

Claims (4)

Sheet holding supported in a swingable manner between a first position for receiving the sheet-like material from the upstream side in the sheet-like material conveyance direction and a second position for delivering the sheet-like material to the downstream side in the sheet-like material conveyance direction Means,
A claw base shaft that supports the sheet holding means and is pivotally supported so as to pivot the sheet holding means between the first position and the second position. In the sheet holding device,
The first position and the second position are such that when the sheet holding means starts swinging, the swinging is assisted, and when the sheet holding means stops, the sheet holding means is braked. With an urging means to exceed the dead center between
The biasing means includes a lever fixed to the claw base shaft so as to rotate in the same direction as the rotation direction of the sheet holding means, and a biasing member that biases the lever.
The urging means changes the urging direction relative to the rotational direction of the sheet holding means before and after the dead center is exceeded . In the holding apparatus of the sheet-like object according to claim 1,
  A pair of the sheet holding means are provided adjacent to each other,
  One of the sheet holding means is supported in such a manner that it can be raised and lowered so as to be in a state of being raised at the first position and being in a state of being lowered at the second position,
  The other sheet holding means is supported in a undulating manner so as to be in a state in which the sheet holding unit is in a lying state in the first position and in a state in which the sheet holding unit is raised in the second position,
  The sheet is delivered between the one sheet holding means positioned at the second position and the other sheet holding means positioned at the first position. A holding device for the object. In the holding apparatus of the sheet-like object according to claim 1,
  The biasing means further includes a swing lever having one end pivotally attached to the lever,
  The biasing member is a tension coil spring having one end attached to the other end of the swing lever, and the tension coil spring biases the lever via the swing lever. A holding device for the object. In the holding apparatus of the sheet-like object according to claim 1,
  An apparatus for holding a sheet-like object, comprising: a cam; a cam lever that swings by the cam; and a gear device that rotates the claw base shaft by swinging the cam lever.

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