JP6951924B2 - Printing equipment using a cylindrical printing jig and a cylindrical printing jig - Google Patents

Description

The present invention relates to a cylindrical printing jig and a printing apparatus using a cylindrical printing jig.

As a device for printing directly on a cylindrical object, the object is rotated by holding it from both sides of the cylindrical object with holding members, or the object is rotated by holding and rotating only one side, or the cylindrical object is placed between a pair of cylindrical rollers and rotated. (See, for example, Patent Documents 1, 2 and 3).

Japanese Unexamined Patent Publication No. 10-278241 Japanese Unexamined Patent Publication No. 2014-205125 Japanese Unexamined Patent Publication No. 8-207265

In the case of a structure in which the cylindrical object, which is the printing medium, is held from both sides or one side, there is no problem because the position of the cylindrical object (printing medium) is fixed at the time of printing and does not move, but there is no problem. When printing is performed on a printing medium, the cylindrical object (printing medium) is in a very unstable state, and there is concern about its use in printing such as inkjet printing, which is affected by the transport accuracy of the printing medium.
According to the present invention, in a structure in which a cylindrical object is placed on a roller and the cylindrical object is rotated to print, a member for pressing the cylindrical object (printing medium) can be provided to perform stable printing of the cylindrical object (printing medium). The purpose is to do so. Further, since the cylindrical object (printing medium) is printed by moving the print head, if the print head accidentally comes into contact with the pressing member, the pressing member is retracted from the movement path of the print head for printing. The purpose is to prevent the main body of the device such as the head from breaking.

In order to achieve the above object, the present invention is a removable cylindrical printing jig used by placing it on a table of a printing apparatus, for supporting a cylinder on a base of the cylindrical printing jig. A pair of cylindrical support rollers facing each other at a predetermined interval and a mechanism for rotating the cylindrical support rollers are provided so that the media pressing arm can swing on the substrate side in a plane horizontal to the table surface. A receiving member that supports the shaft and receives the end of the cylinder on the cylinder support roller is erected on the substrate, the media pressing arm is urged by the urging means, and the pressing provided on the tip end side of the media pressing arm. The portion is pressed against one of the cylinders, and the other of the cylinders is elastically contacted with the receiving member.
Further, the present invention includes a holder that can be detachably fixed to the body of the table-movable printing device, a base that is connected to the holder so that it can be moved in parallel in the vertical direction, and a predetermined distance for supporting the cylinder. A cylindrical printing jig used in a printing device provided with a pair of cylindrical support rollers provided on the pair of substrates facing each other and a power conversion mechanism for converting the movement of the table of the printing device into rotational motion. A media pressing arm is pivotally supported on the base side in a plane horizontal to the table surface, and a receiving member for receiving the end of the cylinder on the cylinder support roller is erected on the base side. The media pressing arm is urged by an urging means, a pressing portion provided on the tip end side of the media pressing arm is pressed against one of the cylinders, and the other of the cylinders is elastically contacted with the receiving member. do.
Further, the present invention is characterized in that the pressing portion provided on the tip end side of the media pressing arm is a rotating roller that can rotate in conjunction with the rotation of the cylinder.
Further, the present invention is characterized in that the receiving member is a shaft-shaped rotating roller that can rotate in conjunction with the rotation of the cylinder.
Further, in the present invention, when the urging force for pressing the tip end side of the media pressing arm of the urging means against the cylinder swings in the direction away from the cylinder in the direction away from the cylinder, the opposite direction occurs. It is characterized by being converted to.
Further, in the present invention, the media pressing arm is pivotally supported on the substrate side between a region deviating from the movement path of the print head of the printing apparatus and a region inside the cylindrical arrangement so that the urging force is the predetermined one. When the media pressing arm is converted in the opposite direction beyond the reference direction, the media pressing arm is retracted to a region deviating from the movement path of the print head.
Further, the present invention is a removable cylindrical printing jig used by placing it on a table of a printing apparatus, and a predetermined interval for supporting a cylinder provided on a base of the cylindrical printing jig is provided. It is provided with a cylindrical support roller provided on the pair of existing substrates facing each other and a media pressing mechanism for preventing the cylinder on the cylindrical support roller from being displaced, and the media pressing mechanism is provided on the cylindrical support roller. A base fixed so as to be movable along a direction parallel to the longitudinal direction, a media pressing arm oscillatingly supported on the base in a plane horizontal to the table surface, and the media pressing arm. It is composed of a spring suspended between the base and a receiving member that receives the end of the cylinder on the cylinder support roller, and the direction of the urging force of the spring with respect to the media pressing arm is the media pressing arm. It is characterized in that it is converted based on the rotation axis of.
Further, in the present invention, the machine body, the table, the print head supported so as to be movable in one direction in a plane parallel to the table, and the table in a direction orthogonal to the moving direction of the print head. A sub-scanning drive mechanism that movably supports the table and a removable cylindrical printing jig that is placed on the table and used are provided. The table is moved in one direction under the control of a controller, and the print head is moved. A printing device that moves in a direction across a table and prints on a printing medium on the table, wherein the cylindrical printing jig has a predetermined interval for supporting a cylinder on a base of the cylindrical printing jig. It has a pair of existing and opposed cylindrical support rollers and a mechanism for rotating the cylindrical support rollers, and a media pressing arm is pivotally supported on the substrate side so as to be swingable in a plane horizontal to the table surface. A receiving member for receiving the end of the cylinder on the cylinder support roller is erected on the substrate side, the media pressing arm is urged by the urging means, and the pressing portion provided on the tip end side of the media pressing arm is provided. It is characterized in that it is pressed against one of the cylinders and the other of the cylinders is elastically contacted with the receiving member.

Stable printing of a cylindrical object (printing medium) can be performed by providing a member for pressing the cylindrical object (printing medium) and positioning the cylindrical object toward one side. Also, when printing a cylindrical object that cannot be pressed (such as having an inclination on one side), the member to be pressed can be moved to a position where it is completely removed, so it is possible to use it properly depending on the object as needed. be.
Further, when the printing head or the like accidentally comes into contact with the pressing member, the pressing member is retracted from the movement path of the printing head, so that damage to the expensive printing head or the like can be prevented.

It is a plane explanatory view of this invention. It is a plane explanatory view of this invention. It is a top view of the media holding mechanism. It is an external view of the cylinder printing jig. It is explanatory drawing of the cylinder printing jig. It is sectional drawing of the cylinder printing jig. It is sectional drawing of a part of a cylinder printing jig. It is an external view of a printing apparatus. It is an external view of the cylinder printing jig.

Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 8 shows an explanatory view of the appearance of the inkjet printer (printing apparatus) 2 in a state where the cylindrical printing jig 4 is attached.
A head guide rail (not shown) that guides the inkjet type print head 8 in the main scanning direction (Y-axis direction) is erected on the body 6 of the printer 2. The print head 8 is integrally formed with the head carriage, and the head carriage is movably connected to the head guide rail.

A table 10 is provided on the machine body 6 of the printer 2, and the table 10 is attached to an X-axis moving body (not shown) that can move in the front-rear direction of the machine body 6, that is, in the sub-scanning direction (X-axis direction), and an elevating mechanism (not shown). ) Is supported. The X-axis moving body is movably attached along the X-axis guide 11 arranged on the machine body 6, and is configured to move in the X-axis direction under the control of the controller.

The body 6 of the printer 2 is provided with an automatic table elevating control mechanism so that the height of the table 10 can be automatically controlled. Further, the machine body 6 of the printer 2 is provided with a table elevating operation handle 11, and by operating this handle, the height of the table 10 can be changed while the table surface is kept parallel to the floor surface. The distance between the print object and the inkjet print head 8 can be manually adjusted with respect to the height of each object.

The printer 2 is used for printing on a medium having a normal flat surface when the cylindrical printing jig 4 is removed. In printing on media, the media is set on the table 10, and the print head 8 is reciprocated in the Y-axis direction along the head guide rail while moving the table 10 in the X-axis direction under the control of the controller, and the print head is printed. The ultraviolet curable ink is ejected from the ink ejection portion of No. 8 to the printing execution area on the top of the medium (printing medium), and printing is performed on the printing execution area of the media.

When printing on a medium having a certain thickness, the table 10 is lowered and the distance between the print head 8 and the medium is automatically adjusted to perform printing. The head carriage is equipped with an ultraviolet irradiation device 13 adjacent to the print head 8, and is irradiated with ultraviolet rays after ink is ejected onto the printing surface of the medium during printing. The ink may be used for the required purpose in combination with the object to be printed, and is not limited to the ultraviolet curable ink.

As shown in FIG. 4, the cylindrical printing jig 4 includes a holding body 12 made of a rail-shaped member that is long in one direction, and a base 14 and a cover 16 for attaching various parts. still. In FIG. 4, the media pressing mechanism described later is not shown for convenience of explanation. Clamp mounting pieces 18 and 20 for detachably screwing and fixing the holding body 12 to the mounting portion formed on the upper edge of the machine body 6 of the printer 2 are provided at both ends of the holding body 12. .. Projecting pieces 22 and 24 are integrally formed in the vicinity of both ends of the holding body 12, and shaft holes 26 and 28 are formed in the projecting pieces 22 and 24.

Elevating guide portions 30 and 32 are integrally provided on both sides of the front portion of the substrate 14, and elongated holes 34 and 36 extending in a direction perpendicular to the mounting surface of the table 10 are formed therein. The shaft portions of the bolts 38 and 40 are slidably fitted and arranged in the elongated holes 34 and 36, and the screw portions of the bolts 38 and 40 are provided in the plate nuts 44 arranged in the frame portions 42 of the elevating guide portions 30 and 32. It is screwed in.

A tubular body 48 is fitted and inserted into the shaft portion of the bolts 38 and 40, and the shaft portion is fitted and inserted into the shaft holes 26 and 28. The bolts 38 and 40 whose shafts are slidably fitted into the elongated holes 24 and 26 and the plate nuts 44 and 46 whose movement direction is restricted by the frame 42 are provided with the base 14 on the mounting surface of the table 10. It constitutes an elevating connection mechanism that connects to a connecting body 12 that can be translated in a direction perpendicular to the mounting surface of the table 10 in a horizontal state.

A pair of mounting bodies 52, 54 are slidably arranged in the front-rear direction on the rear portion of the bottom plate 50 of the base 14, and a driving roller 56 composed of two rollers is provided between the frame plates of one mounting body 52. A shaft 62 provided with a media drive roller 60 composed of a shaft 58 and 12 rollers is rotatably hung. A shaft 66 provided with a media driven roller 64 composed of 12 rollers is rotatably hung between the frame plates of the other mounting body 54.

The sliding direction of the base 14 of the mounting bodies 52 and 54 on the bottom plate 50 is regulated in the front-rear direction of the base 14 by the side frame portions 68 and 70 of the base 14. Nuts 72 are fixed to the flat plates of the mounting bodies 52 and 54 at predetermined intervals, and index plungers 74, 76, 78 and 80 are inserted and arranged in the pipes held by the nuts 72. There is. Index holes 82 for the plunger are formed in the bottom plate 50 of the substrate 14 for each of the index plungers 74, 76, 78, and 80.

The arrangement of the index holes 82 is set according to the distance between the media drive roller 60 corresponding to the size of the cylinder 106 and the facing position of the media driven roller 64, and in the present embodiment, the distance between the rollers 60 and 64 is set in two steps. Index holes 82 are provided symmetrically in the front-rear direction with reference to the origin set between the rollers 60 and 64 at positions that can be changed.

The amount of movement for changing the roller pitch does not have to be stepwise, and may be changed steplessly. The shafts 58, 62, 66 are arranged in parallel with each other, and the rollers 60, 64 are set to have the same diameter. Timing belt pulleys 84 and 86 are rotatably attached to the side portions of the substrate 14 at predetermined intervals in the front-rear direction, and an endless timing belt 88 is hung between the pulleys 84 and 86. Timing belt pulleys (toothed pulleys) 90 and 92 having the same diameter as the rollers 60 and 64 are fixedly attached to each end of the shafts 66 and 62, and the toothed pulleys 90 and 92 are on one side of the timing belt 88. It meshes with the upper running part.

Toothed pulleys 94 and 96 are fixed to the shaft 58 and the shaft 62, respectively, and an endless timing belt 98 is hung between the pulleys 94 and 96. The drive roller 56 is arranged on the base 14 so that its friction peripheral surface comes into contact with the table 10 of the printer and converts the movement of the machine body 6 of the table 10 in the front-rear direction (secondary operation direction) into a rotary motion. .. The media drive roller 60 is adjusted by the timing belt 98 and pulleys 94 and 96 so that the rotation ratio of the drive roller 56 is the same as the table feed amount and the rotation circumference of the media drive roller 60.

The media driven roller 64 is arranged at a position symmetrical with respect to the origin of the media drive roller 60 and the drawing origin, and the timing pulleys 90 and 92 and the timing belt 88 synchronize the rollers 60 and 64 with each other. It is configured to rotate in the same direction. Auxiliary wheels 100 are rotatably supported at the four corners of the substrate 14. The base 14 is provided with a cover 16. The cover 16 is provided with an opening, and is configured to place a cylinder on the rollers 60 and 64 arranged in the opening. The cover 16 is formed with a slot for arranging the index plungers 74, 76, 78, 80 and a hole for arranging the handle 102 provided on the substrate 14, and the position of the index hole 82 is indicated in the vicinity of the slot. An index display 104 is provided.

In the above configuration, when selecting an appropriate roller pitch according to the diameter of the cylindrical media 106, pull up the knobs of the index plungers 74, 76, 78, 80 and slide the mounting bodies 52, 54 for a large diameter cylinder. Alternatively, the roller pitch can be adjusted in two steps by selecting one of the index holes 82 for a small diameter cylinder and inserting the pins of the index plungers 74, 76, 78, 80 into the selected index holes 82. can. At this time, since the timing belt pulleys 90 and 92 fixed to the roller shafts 62 and 66 are always meshed on the upper side (one side) of the timing belt 88, the two rollers 60 and 64 facing each other even if the roller pitch changes. Can be kept in sync.

The timing belt pulleys 84 and 86 are rotatably supported by the pulley holders, and the pulley holders are attached to the bottom plate 50 of the base 4. Further, among the pulley holders, the pulley holder that holds the timing belt pulley 84 is attached to the bottom plate 50 so as to be slidable in the front-rear direction of the base 4. In order for the timing belt 88 and the teeth of the pulleys 90 and 92 to mesh firmly, the timing belt 88 needs to be in a tensioned state. Therefore, the pulley holder of the pulley 84 is fixed to the bottom plate 50 with a screw by eliminating the slack of the timing belt 88 in a state of being pulled outward by the spring 110 provided on the substrate 14. Further, a roller member 108 is provided between the pulleys 90 and 92 and the pulleys 84 and 86, and a timing belt 88 is passed under the roller member 108 so that the timing belt can be reliably moved to any place between the timing belts. It is in contact with 88, and at the same time, tension is applied to the timing belt.
When the holding body 12 of the cylindrical printing jig 4 is arranged in front of the machine body 6 of the printer 2, and the clamp mounting pieces 18 and 20 are fixed to the predetermined clamp positions of the machine body 6 with screws, the cylindrical printing jig 4 The base material 14 is placed in parallel on the table 10 by its own weight via the front auxiliary wheel 100 and the drive roller 56, or via the rear auxiliary wheel 100 and the drive roller 56.

When printing a cylinder, the medium 106, which is the printed matter, is placed on the rollers 60 and 64. At this time, the top (or center) of the media 106 is prevented from shifting with respect to the ink ejection path of the print head 8 so that the position of the top of the media 106 or the center of the media 106 does not shift with respect to the ink ejection path of the print head 8 regardless of whether the diameter of the media 106 is large or small. ) Is the same position with respect to the print head 8. To adjust the distance between the surface of the media 106 and the print head 8, select the "table height change menu" on the operation panel of the printer 2 and enter the diameter value of the media into the controller to enter the table height of the printer 2. Set.

During printing, the drive roller 56 and the training wheels 100 in front or behind come into contact with the table 10 due to the weight of the substrate 4. As the table 10 moves in the X-axis direction (sub-scanning direction) indicated by the arrow in FIG. 5, the drive roller 56 rotates due to contact friction with the table 10, whereby the media drive roller 60 rotates. The rotation of the media drive roller 60 causes the cylindrical media 106 to rotate, and the media driven roller 64 rotates in synchronization with the media drive roller 60.

At this time, the rotation of the media drive roller 60 is transmitted to the timing belt 88 via the timing pulley 92, and the rotation of the timing belt 88 is transmitted to the media driven roller 64 via the timing pulley 90 that meshes with the timing pulley 92, and both rollers. Since the 60 and 64 rotate in the same direction in synchronization, both the rollers 60 and 64 can be used to rotate the cylindrical media 106.
In the above embodiment, the drive roller 56 constitutes a power conversion mechanism that converts the movement of the table 10 into a rotary motion, but the media drive roller 60 may also serve as a power conversion drive roller.

Further, in the above embodiment, the drive roller 56, the toothed pulley 94 fixed to the shaft 58, the toothed pulley 96 fixed to the shaft 62, and the timing belt 98 constitute a rotation transmission mechanism, and particularly the belt and the pulley. It is not limited to the configuration using. The index plungers 74, 76, 78, 80 and the index holes 82 form a locking mechanism that detachably locks the pair of mounting bodies 52, 54 to the substrate 14, but the present invention is limited to this configuration. Instead, a stepless configuration may be used in which the mounting bodies 52 and 54 are locked at arbitrary positions with reference to the origin.

In FIG. 3, 110 is a media pressing mechanism, which includes a base 112 and a media pressing arm 114. The pressing arm 114 has a shape in which the lower horizontal portion, the upper horizontal portion, and the step forming portion are refracted, and the pressing rotary roller 116 is centered on the axis perpendicular to the table 10 surface at the tip of the lower horizontal portion. It is mounted rotatably. The rear portion of the presser arm 114 is rotatably attached to the base 112 about a rotation axis 118 perpendicular to the table 10 surface, and the press arm 114 is rotatably attached to the base 112 in a plane horizontal to the table 10 surface. It is attached so that it can swing freely. Spring hooking portions 120 and 122 are provided at eccentric positions between the intermediate portion of the base 112 and the upper horizontal portion of the pressing arm 114, and a tension coil spring 124 is hung between the spring hooking portions 120 and 122. ..

A rail body 126 is erected between the side frames of the cylindrical printing jig 4 in a direction parallel to the axes of the rollers 60 and 64, and a mounting piece 128 is slidably arranged on the rail body 126. A tightening fixture 130 is provided on the mounting piece 128, and the mounting piece 128 can be fixed at an arbitrary position on the rail body 126 by operating the lever 132. A long hole (not shown) is formed in the rising portion of the mounting piece 128 in the vertical direction, and the rising portion of the base 112 is formed on the mounting piece 128 by the fixing screw 136 inserted into the long hole 134 and the set screw 138. It is fixed to the rising part so that the angle can be adjusted.

The fixing position of the base 112 with respect to the mounting piece 128 can be finely adjusted by changing the position of the fixing screw 136 with respect to the slotted hole, and the height of the presser foot rotating roller 116 can be finely adjusted by this fine adjustment. , It is possible to hold down the optimum position according to the size of the cylindrical object that is the target print medium. A cover 140 is attached to the rear portion of the pressing arm 114. On the bottom plate of the side portion of the jig 4, a receiving shaft 142, which is located between the rollers 60 and 64 and is composed of a rotatable roller that receives the end portion of the cylindrical media 106, is erected.

The roller of the receiving shaft 142 is rotatably configured about an axis perpendicular to the surface of the table 10. FIG. 1 shows an arrangement state of the media pressing mechanism 110 at the time of printing, the media pressing arm 114 is arranged in a state substantially perpendicular to the longitudinal direction of the cylindrical media 160, and the tension type coil spring 124 has a rotation shaft 118. The media pressing arm 114 is urged clockwise about the rotation axis 118.

By this urging force, the rotating roller 116 at the tip of the media pressing arm 114 presses the lower part of the bottom surface of one of the cylindrical media 160 to the right, and the other of the cylindrical media 160 is elastically contacted with the shaft 142. As a result, in FIG. 1 along the roller shafts 62 and 66 on the rollers 60 and 64 of the cylindrical media 160, the occurrence of lateral displacement (skew) is prevented, and the cylindrical media 160 is placed on the rollers 60 and 64. It is fixed in the correct position.

During printing, the rotating roller 116 of the media pressing arm 114 and the rotating roller of the receiving shaft 114 rotate in the same direction in conjunction with the rotation of the cylindrical media 160. Further, since the pressing arm 114 and the rotating roller 116 of the present structure can be moved up and down with the fixing screw 136 as the center of rotation, an accident such as when the pressing arm 114 and the rotating roller 116 are mistakenly raised beyond the printed surface of the cylindrical object can be avoided. A structure is also required. Therefore, as shown in FIG. 2, the print head 8 accidentally collides with the media pressing arm 114, the media pressing arm 114 is pushed by the print head 8, and the central axis of the coil spring 124 is constant until it exceeds the rotation axis 118. When rotated by an angle or more, the tensile force generated by the coil spring 124 converts the media pressing arm 114 into the counterclockwise rotation direction in FIG. 1, which retracts the media pressing arm 114 from the movement path to the print head 8. The evacuation structure minimizes the effect of collision with the head and the like.
When printing a cylindrical object that cannot be pressed (for example, if it has a structure that does not apply a force such as inclination to one side), the object can be applied with a support material as an auxiliary material. Although the pressing side may be corrected for printing, in this case, the member to be pressed can be moved to the retracted position shown in FIG. 9, and when not in use, it can be moved to a safe place. It is also possible to use it properly according to the object.

This mechanism is composed of only two main parts such as the media pressing arm and the coil spring, and the position of the media pressing arm and the setting of the strength to press the media can be changed by changing the mounting position of the member. It is extremely useful in terms of cost and design because it can be easily optimized.
Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

2 Printer 4 Cylindrical printing jig 6 Machine 8 Print head 10 Table 11 Table elevating operation handle 12 Holder 13 Ultraviolet irradiation device 14 Base 16 Cover 18 Mounting piece 20 Mounting piece 22 Projection piece 24 Projection piece 26 Shaft hole 28 Shaft hole 30 Elevating guide part 32 Elevating guide part 34 Long hole 36 Long hole 38 Bolt 40 Bolt 42 Frame part 44 Plate nut 46 Plate nut 48 Cylinder 50 Bottom plate 52 Mounting body 54 Mounting body 56 Drive roller 58 Axis 60 Media Drive roller 62 Axis 64 Media Driven roller 66 Shaft 68 Side frame 70 Side frame 72 Nut 74 Index plunger 76 Index plunger 78 Index plunger 80 Index plunger 82 Index hole 84 Pulley 86 Pulley 88 Timing belt 90 Pulley 92 Pulley 94 Pulley 96 Pulley 98 Timing belt 100 Auxiliary wheel 102 Handle 104 Index display 106 Cylindrical media 108 Roller member 110 Media pressing mechanism 112 Base 114 Media pressing arm 116 Presser rotating roller 118 Rotating shaft 120 Spring hooking part 122 Spring hooking part 124 Coil spring 126 Rail body 128 Mounting piece 130 Fixing tool 132 Lever 134 Long hole 136 Fixing screw 138 Set screw 140 Cover 142 Receiving shaft

Claims (8)

A pair of removable cylindrical printing jigs that are placed on the table of a printing device and face each other with a predetermined interval for supporting the cylinder on the base of the cylindrical printing jig. A cylindrical support roller and a mechanism for rotating the cylindrical support roller are provided, and a media pressing arm is oscillatedly supported on a base of a cylindrical printing jig in a plane horizontal to the table surface of the printing device. A receiving member that receives the end of the cylinder on the cylinder support roller is erected on the substrate, the media pressing arm is urged by the urging means, and the pressing portion provided on the tip end side of the media pressing arm is the cylinder. A cylinder printing jig used in a printing device, which is pressed against one side and the other side of the cylinder is bounced against the receiving member. A pair of a holder that can be detachably fixed to the body of a table-movable printing device, a base that is connected to the holder so that it can be moved in parallel in the vertical direction, and a pair that face each other with a predetermined interval for supporting a cylinder. a of the cylindrical support rollers provided on the substrate, power conversion mechanism and the cylindrical printing jig for use in a printing device having a for converting the movement of the printing device table into a rotary motion, the cylindrical printing jig A receiving member that swingably supports the media pressing arm on the base of the cylinder in a plane horizontal to the table surface of the printing device and receives the end of the cylinder on the cylinder support roller on the base of the cylinder printing jig. Is erected, the media pressing arm is urged by urging means, the pressing portion provided on the tip end side of the media pressing arm is pressed against one of the cylinders, and the other of the cylinders is elastically contacted with the receiving member. The cylindrical printing jig used in the printing apparatus according to claim 1, wherein the cylinder printing jig is used. The cylindrical printing jig used in the printing apparatus according to claim 1, wherein the pressing portion provided on the tip end side of the media pressing arm is a rotating roller that can rotate in conjunction with the rotation of the cylinder. .. The cylindrical printing jig used in the printing apparatus according to claim 1, wherein the receiving member is a shaft-shaped rotating roller that can rotate in conjunction with the rotation of the cylinder. When the urging force that presses the tip end side of the media pressing arm of the urging means against the cylinder swings in the direction away from the cylinder beyond a predetermined reference direction, it is converted in the opposite direction. The cylindrical printing jig used in the printing apparatus according to claim 1, wherein the jig is used. A media pressing arm is oscillatingly supported on the substrate of the cylindrical printing jig between a region deviating from the movement path of the printing head of the printing apparatus and a region inside the cylindrical arrangement, and the urging force is the predetermined reference. The cylindrical printing jig used in the printing apparatus according to claim 5, wherein the media pressing arm retracts to a region deviating from the movement path of the printing head when the media pressing arm is converted in the opposite direction beyond the direction. Ingredients. A removable cylindrical printing jig that is placed on a table of a printing device and used, and faces each other with a predetermined interval for supporting a cylinder provided on a base of the cylindrical printing jig. A pair of cylindrical support rollers and a media pressing mechanism for preventing the cylinders on the cylindrical supporting rollers from shifting are provided, and the media pressing mechanism can be moved along a direction parallel to the longitudinal direction of the cylindrical supporting rollers. A base fixed to the base, a media pressing arm oscillatingly supported on the base in a plane horizontal to the table surface of the printing apparatus, and suspended between the media pressing arm and the base. The spring, the receiving member that receives the end of the cylinder on the cylindrical support roller, and one of the cylinders on the cylindrical support roller are pressed by the urging force of the spring, and the end of the cylinder is repelled by the receiving member. It is composed of a pressing portion provided at the tip of the media pressing arm for contact, and the direction of the urging force of the spring with respect to the media pressing arm is changed with reference to the rotation axis of the media pressing arm. A cylindrical printing jig used in a printing device characterized by the above. The machine body, the table, the print head movably supported in one direction in a plane parallel to the table, and the table movably supported in a direction orthogonal to the moving direction of the print head. It is equipped with a sub-scanning drive mechanism and a removable cylindrical printing jig that is placed on the table and used. The table is moved in one direction under the control of the controller, and the print head is moved across the table. A printing apparatus that moves and prints on a printing medium on a table, wherein the cylindrical printing jig faces the substrate of the cylindrical printing jig with a predetermined interval for supporting the cylinder. It has a pair of cylindrical support rollers and a mechanism to rotate the cylindrical support rollers, and a media pressing arm is oscillated on a base of a cylindrical printing jig in a plane horizontal to the table surface of the printing apparatus. Then, a receiving member that receives the end of the cylinder on the cylindrical support roller is erected on the base of the cylindrical printing jig , the media pressing arm is urged by the urging means, and the media pressing arm is placed on the tip end side of the media pressing arm. A printing apparatus characterized in that the provided pressing portion is pressed against one of the cylinders and the other of the cylinders is elastically contacted with the receiving member.

Images