JP2010188530A - Rotary seal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary seal which enables a user to easily select a desired belt out of a plurality of endless printing belts. <P>SOLUTION: The rotary seal includes: a rotary seal body 10 where the plurality of endless printing belts 15 each having a plurality of prints formed on the outer surface thereof are wound between a plurality of rotators 12 rotatably disposed and the lower end of the rotary seal body 10; a fixed seal 19 where a window hole 19a from which the endless printing belt 15 is exposed is formed at the lower end of the rotary seal body 10; and a gripping barrel 30 with which the rotary seal body 10 is covered and which is disposed to slide in an up-and-down direction and in a circumferential direction relative to the rotary seal body 10. The rotary seal is provided with: a rotating mechanism which applies rotational force to the endless printing belt 15 so as to rotate the prints by one pitch by sliding operation of the gripping barrel 30 in the up-and-down direction; and a selecting mechanism which selects one endless printing belt 15 to which the rotational force is applied out of the plurality of endless printing belts 15 by sliding operation of the gripping barrel 30 in the circumferential direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotation mark having an endless print belt wound around a rotor.

Conventionally, as shown in Patent Document 1, a rotation mark for printing the date is widely used. The rotation mark shown in Patent Document 1 is configured such that a gripping cylinder is slidable up and down on a rotary print body in which an endless print belt is wound between a plurality of freely arranged rotors and a lower end thereof. A fixing mark is provided at the lower end of the gripping cylinder, in which a window hole for exposing the lower end of the endless printing belt is formed. When this rotation mark is imprinted, the printing formed on the endless printing belt and the printing formed on the fixed mark can be printed simultaneously. To switch the printing formed on the endless printing belt, the gripping cylinder is slid upward, and the rotor is rotated with a finger while the rotor is exposed. As described above, since the rotor is rotated by the finger, there is a problem that the fingertip is soiled.
In addition, with the rotation mark that prints the date, it is necessary to change the last day of the date frequently, but for people with thick fingers or those who have difficulty in seeing fine details, rotate the rotor with your fingers. The work is hard.

In order to solve such a problem, the applicant of the present application previously described as Japanese Patent Application No. 2008-252931 by applying a rotational force to the endless print belt by rotating the gripping cylinder and rotating the print body by one pitch. However, in this prior application, a print belt that can be rotated by the rotation mechanism is predetermined at the design stage. I couldn't select the belt I wanted to rotate.
JP 2005-297574 A Japanese Patent Application No. 2008-252931

  An object of the present invention is to solve the above-mentioned problems and to provide a rotation mark that allows a user to easily select a desired belt from a plurality of endless print belts.

The rotation mark of the first invention completed in order to solve the above-described problems is a plurality of prints in which a plurality of prints are formed on the outer surface between a plurality of rotors arranged rotatably and the lower ends thereof. A rotation mark body around which the endless printing belt is wound, a fixed mark in which a window hole through which the endless printing belt is exposed is formed at a lower end of the rotation mark body, and the rotation mark body. And a gripping cylinder slidably disposed in a vertical direction and a circumferential direction with respect to the endless printing belt by applying a rotational force to the endless printing belt by a vertical sliding operation of the gripping cylinder, A rotation mechanism for rotating printing by one pitch and a selection mechanism for selecting one of a plurality of endless print belts to which the rotational force is applied by a circumferential slide operation of the gripping cylinder are provided.
In the second aspect of the invention, a plurality of vertical guide grooves extending in the vertical direction are formed on the lower end of the circumferential guide groove extending in the circumferential direction on the inner cylindrical surface of the gripping cylinder, Forming a guide projection engaging with the circumferential guide groove and the vertical guide groove, sliding the gripping cylinder in the circumferential direction, and selecting one of the plurality of vertical guide grooves, In the first invention, the selection mechanism for positioning the guide projection upward, and the guide projection is engaged and guided in the vertical direction of the vertical guide groove to slide the grip cylinder in the vertical direction. It is a rotation mark of description.
According to a third aspect of the present invention, an operating piece that is deformable inward is formed on the gripping cylinder, and an engaging protrusion that engages the outer surface of the endless print belt is provided at the tip of the operating piece to provide a rotating mechanism. The rotation mark according to the first invention or the second invention, characterized in that it is configured.
According to a fourth aspect of the present invention, a rotating mechanism is configured by forming an operation piece that can be deformed inwardly on the gripping cylinder, and providing an engagement protrusion that faces and engages the rotor at the tip of the operation piece. The rotation mark according to the first or second aspect of the invention.
According to a fifth aspect of the present invention, a ratchet member formed with a ratchet claw bulging outward in the radial direction is disposed coaxially in a state of being engaged with a rotor, and meshes with the ratchet claw inside a gripping cylinder. Alternatively, when an engaging projection that slides is formed and the gripping cylinder is slid upward or downward, the ratchet member rotates in one rotation direction, the rotor is rotated, and rotational force is applied to the endless print belt. The rotation mark according to the first invention or the second invention, wherein the rotation mechanism is configured to be provided.

According to the first aspect of the present invention, since a rotation mechanism is provided that applies a rotational force to the endless print belt by rotating the gripping cylinder and rotates the print by one pitch, it is easy to slide the gripping cylinder upward or downward. With the operation, it is possible to switch the printing of the endless printing belt. Further, since the printing can be switched without directly touching the rotor, the fingertip is not soiled. Furthermore, since the fixed mark in which the window hole through which the endless printing belt is exposed is provided at the lower end of the rotation mark main body, it is very convenient that the print formed on the fixed mark can be printed together with the rotation mark. .
Further, since the selection mechanism for selecting one of a plurality of endless printing belts to which the rotational force is applied by the circumferential slide operation of the gripping cylinder is provided, the user can select the belt for printing the year, month, and day. The desired belt can be selected from the inside.

  In the second invention, a plurality of vertical guide grooves are formed at the lower end of the circumferential guide groove, and a guide projection that engages with the circumferential guide groove and the vertical guide groove is formed. To select one of a plurality of endless print belts, and when the guide tube is slid in one of the vertical guide grooves, the gripping cylinder is slid upward or downward. Thus, it is possible to realize a rotation mechanism that applies a rotational force to the endless print belt.

  In the third invention, the gripping cylinder is formed with an operation piece that can be deformed inward, and an engagement protrusion that faces and engages the outer surface of the endless print belt is provided at the tip of the operation piece. When it is slid upward or downward, it is possible to realize a rotation mechanism that applies a rotational force to the endless print belt.

  According to the fourth aspect of the present invention, an operation piece that can be deformed inward is formed on the gripping cylinder, and an engaging protrusion that faces and engages with the rotor is provided at the tip of the operation piece. It is possible to realize a rotation mechanism that applies a rotational force to the endless print belt.

  According to a fifth aspect of the present invention, a ratchet member formed with a ratchet claw bulging outward in the radial direction is disposed coaxially in a state of being engaged with a rotor, and meshes or slides with the ratchet claw inside a gripping cylinder. When the engaging projection is formed and the gripping cylinder is slid upward or downward, the ratchet member rotates in one rotation direction, the rotor is rotated, and rotational force is applied to the endless print belt. Thus, when the gripping cylinder is slid upward or downward, it is possible to realize a rotation mechanism that applies a rotational force to the endless print belt.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an external view of a rotation mark 51 according to the first embodiment, and FIG. 3 is a cross-sectional view of FIG. The rotation mark 51 includes a rotation mark body 10 and a gripping cylinder 30. A gripping cylinder 30 is mounted on the rotation mark main body 10 so as to be slidable in the vertical direction. Here, the term “covering” refers to mounting so as to be covered. Hereinafter, each component will be described in detail.

  The rotary mark body 10 includes a frame-shaped member 11, a rotor 12, a support member 13, an endless print belt 15, a fixed mark 19, and a housing 20. The frame-shaped member 11 has a cross-sectional shape “U” shape and is open to the lower side. A plurality of rotors 12 are coaxially mounted inside the frame-shaped member 11. In the rotor 12, an operation disk 12a and an engagement cylinder 12b having an outer diameter smaller than that of the operation disk 12a are integrally formed coaxially. At the lower end of the frame-shaped member 11, a support member 13 having a cross-sectional “U” shape and opened upward is attached.

  A plurality of endless print belts 15 are wound around the engaging cylinders 12 b of the respective rotors 12 and the lower ends of the support members 13. On the outer surface of the endless print belt 15, a plurality of print blocks 15 a are projected along the length direction. On the surface of the printing block 15a, printing such as numbers and characters is formed. The back surface of the endless printing belt 15 and the engagement cylinder 12b of the rotor 12 are engaged. When the user rotates the operation disk 12a with a finger or the like, the endless printing belt 15 also rotates, and the printing block 15a. Will be switched.

The housing | casing 20 is cylindrical and is hold | maintained in the state which accommodated the frame-shaped member 11 in the inside. A fixing mark 19 is provided at the lower end of the housing 20. A window hole 19 a having a rectangular cross section is formed in the center of the fixed mark 19. The lower end of the endless print belt 15 is exposed from the window hole 19a of the fixed mark 19.
As shown in FIG. 2, a guide protrusion 20 a is provided above the outer peripheral surface of the housing 20. The guide protrusion 20a is provided so as to engage with a circumferential guide groove and a vertical guide groove provided in the gripping cylinder 30 described below.

The gripping cylinder 30 has a bottomed cylindrical shape with an open bottom, and is mounted on the housing 20 so as to be slidable in the circumferential direction and the vertical direction. A circumferential guide groove 30 h extending in the circumferential direction is provided on the inner cylinder surface of the gripping cylinder 30. At the lower end of the circumferential guide groove 30h, a plurality of vertical guide grooves 30i extending in the vertical direction (parallel to the axis) are formed, and the circumferential guide groove 30h and the plurality of vertical guide grooves 30i are continuously provided. Has been. The guide protrusion 20a is engaged with the circumferential guide groove and the vertical guide groove.
When the gripping cylinder 30 is slid in the circumferential direction with respect to the housing 20, the circumferential guide groove 30 h engages and guides the guide protrusion 20 a, and the gripping cylinder 30 is vertically moved with respect to the housing 20. When sliding, the vertical guide groove 30i engages and guides the guide protrusion 20a. Accordingly, the gripping cylinder 30 is mounted on the housing 20 so as to be slidable in the circumferential direction and the vertical direction.

  In a state where the gripping cylinder 30 is positioned below the housing 20, the gripping cylinder 30 shields the rotor 12. The disk 12a is not touched, and the printing block 15a formed on the endless printing belt 15 is not inadvertently switched.

On the other hand, if the date or the like is to be changed, the gripping cylinder 30 is slid in the circumferential direction with respect to the housing 20. Then, the guide protrusion 20a provided above the outer peripheral surface of the housing 20 is engaged and guided to the circumferential guide groove 30h provided on the inner wall surface of the gripping cylinder 30, and the guide protrusion 20a is initially set to the circumferential guide groove. Although it is in contact with the end 30m of 30h, it is located at the upper end of the vertical guide groove 30i together with the slide of the gripping cylinder 30. When the gripping cylinder 30 is slid upward from this position, the guide protrusion 20a is guided to engage with the vertical guide groove 30i and finally reaches the lower end. In this state, the operation of the plurality of rotors 12 is performed. The disk 12a is exposed. Thereby, the printing block 15a of the endless printing belt 15 can be switched by rotating the operation disk 12a.
Here, in the vicinity of the end 30m of the circumferential guide groove 30h, a locking piece 30j is provided so that the guide protrusion 20a can get over when a certain force is exceeded, and when the guide protrusion 20a reaches the end 30m, If the guide protrusion 20a can be temporarily locked by the locking piece 30j, the locked state of the gripping cylinder 30 and the housing 20 can be maintained, and when imprinting with the rotation mark 51, It is useful without inadvertent rattling.
Further, a locking piece 301 is provided below the vertical guide groove 30i so that the guide protrusion 20a can get over when a certain force is exceeded, and when the guide protrusion 20a reaches the lower end of the vertical guide groove 30i, the lock If the guide protrusion 20a can be temporarily locked by the piece 30l, the exposed state of the operation disk 12a can be maintained, which is useful when changing the date or the like.

  The number of the vertical guide grooves 30i may be provided as many as the desired number of rotation mechanisms described later. The rotation mechanism is a mechanism that applies a rotational force to the endless print belt and rotates the print by one pitch. Therefore, when the number of endless print belts desired to be rotated is five as shown in FIG. 3A, for example. It is only necessary to provide five vertical guide grooves 30i, and if only three of the five are desired, three vertical guide grooves 30i may be provided. The interval between the plurality of vertical guide grooves 30i is the same as the interval between the rotating mechanisms.

The selection mechanism for selecting one of the plurality of vertical guide grooves 30 i is a guide provided above the outer peripheral surface of the housing 20 when the gripping cylinder 30 is slid in the circumferential direction with respect to the housing 20. This is a mechanism for selecting one of the plurality of vertical guide grooves 30i together with the slide of the gripping cylinder 30 and positioning the protrusion 20a above the protrusion 20a.
At this time, a locking piece 30k may be provided at a continuous portion between the circumferential guide groove 30h and the vertical guide groove 30i so that the guide protrusion 20a temporarily stops above the vertical guide groove 30i. The locking piece 30k is designed so that the guide protrusion 20a can get over when a certain force is exceeded. In this way, the guide protrusion 20a temporarily engages and guides the inside of the circumferential guide groove 30h while stopping above the plurality of vertical guide grooves 30i. Therefore, one of the plurality of vertical guide grooves 30i is selected. Thus, it is useful as a selection mechanism for positioning the guide protrusion 20a above the guide protrusion 20a.

  Here, although not shown, the relationship between the guide protrusion 20a provided on the housing 20 and the circumferential guide groove and the vertical guide groove provided on the gripping cylinder 30 may be reversed. That is, the guide protrusion may be provided on the inner cylinder surface of the gripping cylinder 30, and the circumferential guide groove and the vertical guide groove may be provided on the outer peripheral surface of the housing 20. The vertical guide groove provided below is formed upward from the upper end of the circumferential guide groove provided relatively below the housing 20.

Next, a rotation mechanism that applies a rotational force to the endless print belt and rotates the print by one pitch will be described.
In the embodiment of the first rotating mechanism, as shown in FIG. 1A, the gripping cylinder 30 is formed with a “U” -shaped communication groove 30a having a bottom on the bottom. The inside of the communication groove 30a is an operation piece 30b. In the first embodiment, since the gripping cylinder 30 is made of a flexible and elastic material such as resin, the operation piece 30b can be deformed inward. After the operation piece 30b is pressed with a finger or the like and deformed inward, when the finger is released, the original shape is restored by the elastic force of the operation piece 30b.

  As shown in FIG. 3B, an engaging protrusion 30 c is provided at the tip of the operation piece 30 b so as to protrude inward and face the endless print belt 15.

  As shown in FIG. 4A, when the operation piece 30b is pressed, the engagement protrusion 30c enters between the print blocks 15a adjacent in the length direction and is engaged with the print block 15a. When the gripping cylinder 30 is slid upward in this state, the endless print belt 15 rotates by one pitch, and the print block 15a can be switched (state (B) in FIG. 4). When the pressing of the operation piece 30b is released, the engagement protrusion 30c is not engaged with the endless print belt 15, and therefore the endless print belt 15 cannot rotate even if the gripping cylinder 30 is slid downward.

The rotation mechanism may be designed to be applied to a desired belt from among a plurality of endless print belts. For example, when there are five belts as shown in FIG. 3A, the first rotation mechanism may be provided for all five belts, or may be provided for two belts.
Then, a desired one may be selected from a plurality of rotation mechanisms by the selection mechanism, and printing of the endless print belt may be rotated by one pitch with the first rotation mechanism.

When the selection mechanism selects a desired one of the guide protrusions 20a from the plurality of vertical guide grooves 30i and positions the guide protrusion 20a above the guide protrusion 20a, the engagement protrusion 30c faces the rotation mechanism desired to rotate. To be arranged.
In the case of the first rotation mechanism, the engagement protrusion 30c is disposed so as to face the endless print belt 15. In the rotation mark 51 in which the date is formed on the print block 15a, the engagement protrusion 30c is located on the endless print belt 15 selected by the selection mechanism from the endless print belts of the date. The endless printing belt 15 is configured to be engaged with the printing block 15a.
In this case, the interval between the plurality of vertical guide grooves 30i is the same as the interval between the endless print belts 15 that are desired to rotate.

  In the illustrated embodiment, the rotation mark 51 that presses the operation piece 30b and engages the engagement protrusion 30c with the print block 15a and then slides the gripping cylinder 30 upward to switch the print block 15a. Although the present invention has been described, the present invention is not limited to this embodiment, the gripping cylinder 30 is slid upward without pressing the operation piece 30b, and the operation piece 30b is pressed in this state to After engaging the mating protrusion 30c and the printing block 15a, the printing cylinder 15a may be switched by sliding the gripping cylinder 30 downward.

  Further, as shown in FIG. 1B, a display piece 30n is provided at the lower end of the outer peripheral surface of the gripping cylinder 30, a display groove 20b is provided at a position facing the housing 20, and a lower end of the display groove 20b is provided. May be provided with a character display 20c such as date. By making the position of the character display 20c the same as the position of the rotation mechanism, it is useful because the user can confirm the selection position from the appearance when selecting the rotation mechanism by the selection mechanism.

Next, FIG. 5 shows a cross-sectional view of the rotation mark 52 of the second embodiment, and differences from the rotation mark 51 of the first embodiment will be described.
The engagement protrusion 30d of the rotation mark 52 of the second embodiment is provided so as to protrude from the tip of the operation piece 30b and is disposed so as to face the operation disk 12a. In the rotation mark 52 in which the date is formed on the print block 15a, the engagement protrusion 30d is a rotor that rotates the endless print belt selected by the selection mechanism from the endless print belts of the date. When the operation piece 30b is pressed as shown in FIG. 6A, the engagement protrusion 30d is engaged with the operation disk 12a of the rotor 12. In this state, when the gripping cylinder 30 is slid upward, the rotor 12 rotates, the endless print belt 15 rotates by one pitch, and the print block 15a can be switched (state (B) in FIG. 6). . If the gripping cylinder 30 is slid downward after the pressing of the operation piece 30b is released, printing with the rotation mark 52 becomes possible.
In this case, the interval between the plurality of vertical guide grooves 30i is the same as the interval between the operation disks 12a for rotating the endless print belt desired to rotate.

  In the state shown in the figure, the rotation mark 52 for pressing the operation piece 30b and engaging the engagement protrusion 30d with the operation disk 12a and then sliding the gripping cylinder 30 upward to switch the print block 15a is shown. Although the invention has been described, the present invention is not limited to this embodiment. The gripping cylinder 30 is slid upward without pressing the operation piece 30b, and the operation piece 30b is pressed and engaged in this state. A configuration may be adopted in which the printing block 15a is switched by sliding the gripping cylinder 30 downward after engaging the protrusion 30d with the operation disk 12a.

Next, FIG. 7 shows a cross-sectional view of the rotation mark 53 of the third embodiment, and differences from the rotation mark 51 of the first embodiment will be described.
In the third embodiment, a ratchet member 16 is disposed adjacent to one rotor 12 coaxially. The ratchet member 16 is engaged with one rotor 12 and is rotated together. In the rotation mark 53 formed on the printing block 15a, the ratchet member 16 is designed to be applied to a desired belt from the endless printing belt of the date. As shown in (A) of FIG. 7, it may be provided in two or all five.

  FIG. 8 shows a detailed view of the ratchet member 16. As shown in FIG. 8, the ratchet member 16 has a plurality of elastic pieces 16b formed on the outer side of the disc-shaped main body 16c along the outer periphery of the main body 16c. The elastic piece 16b can be deformed inward (toward the main body 16c), and returns to its original shape by the elastic force of the elastic piece 16b. A ratchet claw 16a bulging outward in the radial direction is formed at the tip of the elastic piece 16b. Specifically, the ratchet pawl 16a is formed with an inclined surface 16d that gradually bulges outward toward the distal end side of the elastic piece 16b. Further, the ratchet pawl 16a has a rotational direction of the ratchet 16 at the distal end. A standing wall 16e that intersects substantially vertically is formed.

  As shown in FIG. 7B, a rack 30 e is formed in the vertical direction at a position facing the ratchet member 16 on the inner surface of the gripping cylinder 30. As shown in FIG. 7C, the rack 30e is composed of a horizontal surface 30f formed horizontally and an inclined surface 30g inclined with respect to the horizontal surface 30f.

  In the rotation mark 53 in which the date is formed in the print block 15a, the rack 30e is arranged on the ratchet member 16 for rotating the endless print belt selected by the selection mechanism from the endless print belts of the date. As shown in FIGS. 7B and 7C, the ratchet pawl 16 a of the ratchet member 16 is engaged with the rack 30 e of the gripping cylinder 30. In the embodiment shown in the figure, when the gripping cylinder 30 is slid upward, the inclined surface 30g of the gripping cylinder 30 presses the inclined surface 16d of the ratchet member 16, and the elastic piece 16b of the ratchet member 16 is deformed inward. Thus, the inclined surface 30g and the inclined surface 16d slide, and the ratchet pawl 16a of the ratchet member 16 rotates freely.

On the other hand, when the gripping cylinder 30 is slid downward while the gripping cylinder 30 is slid upward, the horizontal surface 30f of the rack 30e and the standing wall 16e of the ratchet pawl 16a are engaged, and the ratchet member 16 rotates. The rotor 12 also rotates so that the endless print belt 15 rotates by one pitch and the print block 15a is switched.
In this case, the interval between the plurality of vertical guide grooves 30i is the same as the interval between the ratchet members 16 that rotate the endless print belt desired to rotate.

  In the embodiment described above, when the gripping cylinder 30 is slid downward, the horizontal surface 30f of the rack 30e and the standing wall 16e of the ratchet claw 16a are engaged with each other. However, when the gripping cylinder 30 is slid upward, the rack The horizontal surface 30f of 30e and the standing wall 16e of the ratchet pawl 16a mesh with each other, and the ratchet member 16 rotates, and the rotor 12 also rotates, so that the print block 15a of the endless print belt 15 is switched.

  Although the present invention has been described above in connection with the most practical and preferred embodiments at the present time, the present invention is not limited to the embodiments disclosed herein. However, the present invention can be changed as appropriate without departing from the spirit or concept of the invention that can be read from the claims and the entire specification, and the rotation mark accompanying such a change must also be understood as being included in the technical scope. Don't be.

It is an external view of 1st Embodiment. It is the cross-sectional perspective view of this invention grip cylinder, and the perspective view of a housing | casing. It is sectional drawing of 1st Embodiment. It is an operation state figure of a 1st embodiment. It is sectional drawing of 2nd Embodiment. It is an operation state figure of a 2nd embodiment. It is sectional drawing of 3rd Embodiment. It is detail drawing of a ratchet nail | claw.

DESCRIPTION OF SYMBOLS 10 Rotation mark main body 11 Frame-shaped member 12 Rotor 12a Operation disk 12b Engagement cylinder 13 Support member 15 Endless printing belt 15a Printing block 16 Ratchet member 16a Ratchet claw 16b Elastic piece 16c Main body 16d Inclined surface 16e Standing wall 19 Fixed mark 19a Window Hole 20 Housing 20a Guide projection 20b Display groove 20c Character display 30 Holding cylinder 30a Communication groove 30b Operation piece 30c Engagement projection 30d Engagement projection 30e Rack 30f Horizontal surface 30g Inclined surface 30h Circumferential guide groove 30i Vertical guide groove 30j Locking Piece 30k locking piece 30l locking piece 30m end 30n display piece 51 rotation mark (first embodiment)
52 Rotation mark (second embodiment)
53 Rotation mark (third embodiment)

Claims (5)

A rotary mark body in which a plurality of endless print belts each having a plurality of prints formed on the outer surface are wound between a plurality of rotors arranged rotatably and a lower end thereof;
A fixed mark in which a window hole through which an endless print belt is exposed is formed at the lower end of the rotary mark body;
A rotation mark having a gripping cylinder that is mounted on the rotation mark body and is slidable in a vertical direction and a circumferential direction with respect to the rotation mark body,
A rotation mechanism that applies a rotational force to the endless print belt by a vertical slide operation of the gripping cylinder and rotates the print by one pitch;
A selection mechanism for selecting one of a plurality of endless print belts to which the rotational force is applied by a circumferential slide operation of the gripping cylinder;
A rotation mark characterized by providing. Forming a circumferential guide groove extending in the circumferential direction on the inner cylinder surface of the gripping cylinder, forming a plurality of vertical guide grooves extending in the vertical direction at the lower end of the circumferential guide groove;
On the outer peripheral surface of the rotation mark body, a guide protrusion is formed that engages with the circumferential guide groove and the vertical guide groove,
The selection mechanism that slides the gripping cylinder in the circumferential direction, selects one of the plurality of vertical guide grooves, and positions the guide protrusion above the selected vertical guide groove;
The rotation mark according to claim 1, wherein the guide projection is engaged and guided in the vertical direction of the vertical guide groove to slide the gripping cylinder in the vertical direction. On the gripping cylinder, an operation piece that can be deformed inside is formed,
The rotation mark according to claim 1 or 2, wherein an engagement protrusion is provided at the tip of the operation piece so as to face and engage the outer surface of the endless print belt. On the gripping cylinder, an operation piece that can be deformed inside is formed,
The rotation mark according to claim 1 or 2, wherein an engagement protrusion that faces and engages with a rotor is provided at a tip of the operation piece to constitute a rotation mechanism. A ratchet member formed with ratchet claws that bulge outward in the radial direction is disposed coaxially with the rotor engaged.
Forming an engaging protrusion that meshes with or slides on the ratchet pawl inside the gripping cylinder,
When the gripping cylinder is slid upward or downward, the ratchet member rotates in one rotation direction, the rotor is rotated, and the rotation mechanism is configured to apply a rotational force to the endless print belt. The rotation mark according to claim 1 or 2, characterized in that.

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