Roll body conveying carriage

Abstract

To move a roll body with a roll body conveying carriage in the height direction while holding the roll body stably.SOLUTION: A roll body conveying carriage 100 includes a base part 110 provided with wheels 111, a placement part 120 which is supported by the base part 110 and on which a roll body R1 of a medium M is placed, a first height adjustment part 130A that supports the placement part 120 and adjusts the height of the placement part 120 with respect to the base part 110, a second height adjustment part 130B that supports the placement part 120 and adjusts the height of the placement part 120 with respect to the base part 110, and an operation part 140 that operates the first height adjustment part 130A and the second height adjustment part 130B. The first height adjustment part 130A and the second height adjustment part 130B are arranged at an interval in the axial direction of the roll body R1 when placed on the placement part 120, and the operation part 140 adjusts the height of the placement part 120 by synchronizing the first height adjustment part 130A with the second height adjustment part 130B.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a cart for transporting a roll body.

Background Art

[0002] Conventionally, various printing devices have been used. Among them, there is a printing device that forms an image on a medium while transporting the medium wound in a roll shape. In such a printing device, it is necessary to set a roll body in which the medium is wound in a roll shape in a setting unit of the printing device. Therefore, for example, in Patent Document 1, in order to facilitate setting a roll paper in a setting unit or the like, a roll paper lifting device that can be used when attaching the roll paper to a roll paper holder in a printer and lifts the roll paper to the height of the roll paper holder is disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Among roll bodies in which the medium is wound in a roll shape, there are some that are large and heavy. In addition, as the miniaturization of the printing device is required, the setting unit for the roll body may be provided at a low position. Here, in a printing device in which the setting unit and the winding unit are provided at low positions, an operator has to maintain a heavy roll body at a certain height for a certain period of time in a bent state, resulting in a large working load. In addition, for example, in the roll paper lifting device of Patent Document 1, since it is premised on lifting one end of the roll body in the axial direction at a time, it may be difficult to stably lift the entire roll body.

Means for Solving the Problems

[0005] The trolley for transporting a roll body of the present invention for solving the above problems includes a base provided with wheels, a placement portion supported by the base for placing a roll body around which a medium is wound in a roll shape, a first height adjustment portion that supports the placement portion and adjusts the height of the placement portion with respect to the base, a second height adjustment portion that supports the placement portion and adjusts the height of the placement portion with respect to the base, and an operation portion that operates the first height adjustment portion and the second height adjustment portion. The first height adjustment portion and the second height adjustment portion are arranged at intervals in the axial direction of the roll body when placed on the placement portion, and the operation portion is characterized in that it adjusts the height of the placement portion by synchronizing the first height adjustment portion and the second height adjustment portion.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

DETAILED DESCRIPTION OF THE INVENTION

[0007] First, the present invention will be briefly described. A cart for transporting a roll body according to a first aspect of the present invention for solving the above problems includes a base provided with wheels, a placement portion supported by the base for placing a roll body around which a medium is wound in a roll shape, a first height adjustment portion that supports the placement portion and adjusts the height of the placement portion with respect to the base, a second height adjustment portion that supports the placement portion and adjusts the height of the placement portion with respect to the base, and an operation portion that operates the first height adjustment portion and the second height adjustment portion. The first height adjustment portion and the second height adjustment portion are arranged at intervals in the axial direction of the roll body when placed on the placement portion, and the operation portion is characterized by adjusting the height of the placement portion by synchronizing the first height adjustment portion and the second height adjustment portion.

[0008] According to this aspect, there are provided a first height adjustment portion and a second height adjustment portion arranged at intervals in the axial direction of the roll body when placed on the placement portion, and an operation portion that operates the first height adjustment portion and the second height adjustment portion. The operation portion adjusts the height of the placement portion by synchronizing the first height adjustment portion and the second height adjustment portion. By adopting such a configuration, the height of the roll body can be adjusted while synchronizing at at least two positions, namely the first height adjustment portion and the second height adjustment portion, in the axial direction of the roll body. Therefore, the roll body can be stably held and moved in the height direction.

[0009] A cart for transporting a roll body according to a second aspect of the present invention is a mode subordinate to the first aspect, characterized in that the placement portion has a plurality of handles provided at intervals in the axial direction of the roll body when placed on the placement portion.

[0010] According to this aspect, the placing part has a plurality of handles provided at intervals in the axial direction of the roll body when placed on the placing part. Therefore, when carrying the roll body, an operator can preferably carry the roll body by holding the plurality of handles.

[0011] The roll body carrier of the third aspect of the present invention is an aspect subordinate to the second aspect, characterized in that the plurality of the handles are provided at positions sandwiching the first height adjustment part and the second height adjustment part in the axial direction of the roll body when placed on the placing part.

[0012] According to this aspect, the plurality of handles are provided at positions sandwiching the first height adjustment part and the second height adjustment part in the axial direction of the roll body when placed on the placing part. Therefore, when carrying the roll body, an operator can stably carry the roll body with both hands by holding each handle.

[0013] The roll body carrier of the fourth aspect of the present invention is an aspect subordinate to any one of the first to third aspects, characterized in that the operation part performs an operation by rotating a handle to rotate a handle rotation shaft, and the handle rotation shaft is located at a position between the first height adjustment part and the second height adjustment part in the axial direction of the roll body when placed on the placing part.

[0014] According to this aspect, the operation part performs an operation by rotating a handle to rotate a handle rotation shaft. Therefore, an operator can easily adjust the height of the placing part by rotating the handle. Further, the handle rotation shaft is located at a position between the first height adjustment part and the second height adjustment part in the axial direction of the roll body when placed on the placing part. By adopting such a configuration, the height of the roll body can be stably adjusted by the first height adjustment part and the second height adjustment part.

[0015] The trolley for transporting a roll body according to the fifth aspect of the present invention is an aspect subordinate to any one of the first to third aspects, and is characterized in that the first height adjustment unit and the second height adjustment unit are pantograph jacks.

[0016] According to this aspect, the first height adjustment unit and the second height adjustment unit are pantograph jacks. By adopting such a configuration, the first height adjustment unit and the second height adjustment unit can have a simple configuration.

[0017] The trolley for transporting a roll body according to the sixth aspect of the present invention is an aspect subordinate to the fifth aspect, and is characterized in that the pantograph jack has a screw rod and arms constituting a rhombic contraction mechanism, and the arms are connected to the screw rod, and the length in the height direction is displaced by rotating the screw rod.

[0018] According to this aspect, the pantograph jack has a screw rod and arms constituting a rhombic contraction mechanism, the arms are connected to the screw rod, and the length in the height direction is displaced by rotating the screw rod. By adopting such a configuration, the height of the roll body can be stably adjusted by the first height adjustment unit and the second height adjustment unit.

[0019] The trolley for transporting a roll body according to the seventh aspect of the present invention is an aspect subordinate to the sixth aspect, and is characterized in that the screw rod is provided with a limiting portion for limiting the displacement range of the arms.

[0020] According to this aspect, the screw rod is provided with a limiting portion for limiting the displacement range of the arms. By adopting such a configuration, it is possible to prevent the arms from being displaced beyond a predetermined displacement range.

[0021] The trolley for transporting a roll body according to the eighth aspect of the present invention is an aspect subordinate to the sixth aspect, and is characterized in that the pantograph jack has a cover covering a portion of the screw rod protruding from the arms.

[0022] According to this aspect, the pantograph jack has a cover that covers the portion protruding from the arm of the screw rod. Therefore, it is possible to prevent an operator from contacting the portion protruding from the arm of the screw rod, and for example, it is possible to prevent the operator from being soiled by oil or the like applied to the screw rod.

[0023] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. First, with reference to FIG. 1, an overview of a printing apparatus 1 that can use a carriage 100 for transporting a roll body according to an embodiment of the present invention will be described. In FIG. 1, some constituent members are simplified and omitted for easy understanding of the configuration. Here, in FIG. 1, the X-axis direction in the figure is the horizontal direction and is the direction in which the support portion of the supply unit 2 that holds the roll body R1 in which the medium M is wound in a roll shape extends, the Y-axis direction is the horizontal direction and is the front-rear direction of the printing apparatus 1 and is a direction orthogonal to the X-axis direction, and the Z-axis direction is the vertical direction. In FIGS. 2 and subsequent figures, the X-axis direction, the Y-axis direction, and the Z-axis direction are shown based on the position and posture of the carriage 100 for transporting the roll body in FIG. 1. Further, hereinafter, the direction in which the arrow points is the + direction, and the direction opposite to the direction in which the arrow points is the - direction. For example, in FIG. 1, the vertically upward direction is the +Z direction, the vertically downward direction is the -Z direction, the front of the printing apparatus 1 is the +Y direction, and the rear of the printing apparatus 1 is the -Y direction.

[0024] FIG. 1 shows a state in which the roll body R1 in which the medium M is wound in a roll shape is set in the supply unit 2 using the carriage 100 for transporting the roll body. After setting the roll body R1 in the supply unit 2, the carriage 100 for transporting the roll body may be moved from the periphery of the printing apparatus 1, but in FIG. 1, the carriage 100 for transporting the roll body is positioned at the storage position P1 of the printing apparatus 1 after setting the roll body R1 in the supply unit 2. In the present embodiment, the storage position P1 of the printing apparatus 1 is provided on the rear side corresponding to the supply unit 2 side of the printing apparatus 1 as shown in FIG. 1, and further, it is also provided on the front side corresponding to the winding unit 6 side of the printing apparatus 1.

[0025] As shown in FIG. 1, the printing apparatus 1 of this embodiment includes a main body 9, and leg frames 7 are attached to the vicinity of both ends of the main body 9 in the X-axis direction. Further, the printing apparatus 1 of this embodiment includes a supply unit 2 that holds a roll body R1 on the -Y direction side, which is the rear side of the main body 9. The supply unit 2 supports the paper tube of the roll body R1 around which the medium M is wound so as to sandwich it in the X-axis direction, and supplies the medium M to a position facing the head 5 as a printing unit.

[0026] In the printing apparatus 1 of this embodiment, when the medium M is conveyed in the conveyance direction A, the supply unit 2 rotates the roll body R1 in the rotation direction C. In FIG. 1, a roll body R1 wound so that the image formation surface M1 on which an image is formed faces outward is used. However, when a roll body R1 wound so that the image formation surface M1 faces inward is used, the supply unit 2 can rotate the roll body R1 in the direction opposite to the rotation direction C to send out the medium M.

[0027] The printing apparatus 1 of this embodiment includes a conveyance path for the medium M including a medium support unit 3 that supports the medium M on a support surface 30. The printing apparatus 1 of this embodiment includes an upstream medium support unit 3A, a medium support unit 3B, and a downstream medium support unit 3C as the medium support unit 3 from the upstream side to the downstream side in the conveyance direction A. Further, the printing apparatus 1 includes a pair of rollers 8 including a drive roller and a driven roller as a conveyance unit for conveying the medium M in the conveyance direction A in the conveyance path. However, the configuration of the conveyance unit is not particularly limited.

[0028] The printing apparatus 1 of this embodiment includes a head 5 that can face the medium support unit 3B and is provided with a plurality of nozzles for discharging ink, which is a liquid, from the nozzles to form an image, and a carriage 4 that mounts the head 5 and can reciprocate in the width direction B. In the printing apparatus 1 of this embodiment, the conveyance direction A at the position facing the head 5 on the medium support unit 3B is the +Y direction, the width direction B, which is the movement direction of the head 5, is a direction along the X-axis direction, and the ink discharge direction is the -Z direction.

[0029] With the above configuration, the head 5 can form an image by discharging ink from a nozzle (not shown) onto the medium M being conveyed while reciprocating in the width direction B, which is a direction intersecting the conveyance direction A. The printing apparatus 1 of the present embodiment can form a desired image on the medium M by repeatedly conveying the medium M in the conveyance direction A at a predetermined conveyance amount and discharging ink while moving the head 5 in the width direction B with the medium M stopped.

[0030] Further, a heater 20 is provided in the downstream medium support portion 3C of the medium support portion 3 as a heating portion for heating the supported surface M2 on the side opposite to the image formation surface M1 of the medium M. The heater 20 of the present embodiment is composed of a heating wire or the like, but is not limited to such a configuration. Further, not only the downstream medium support portion 3C but also the upstream medium support portion 3A and the medium support portion 3B may be provided with a medium heating portion for heating the supported surface M2 on the side opposite to the image formation surface M1 of the medium M.

[0031] Further, a blower unit 10 is provided at a portion of the conveyance path facing the downstream medium support portion 3C for drying the ink discharged from the head 5 onto the image formation surface M1 of the medium M by blowing an air flow F. The blower unit 10 of the present embodiment includes a fan 11 that generates the air flow F and is configured to be able to blow the gas as the air flow F onto the image formation surface M1 of the medium M, but is not limited to such a configuration.

[0032] Also, downstream of the downstream-side medium support portion 3C in the conveyance direction A, there is provided a winding portion 6 that winds the medium M conveyed in the conveyance direction A into a roll shape to form a roll body R2. In the printing apparatus 1 of this embodiment, the supply portion 2 and the winding portion 6 have the same configuration. The medium M conveyed from the supply portion 2 to the winding portion 6 is conveyed in a state where a predetermined tension is applied by the winding portion 6 or the like. The winding portion 6 supports the paper tube, which is the winding core of the roll body R2, so as to sandwich it in the X-axis direction, and winds the medium M into a roll shape by rotating the paper tube. In FIG. 1, the winding portion 6 rotates the roll body R2 in the rotation direction C so that the image formation surface M1 is wound to the outside, but the medium M may be wound so that the image formation surface M1 is on the inside. In that case, the winding portion 6 rotates the roll body R2 in the direction opposite to the rotation direction C.

[0033] Note that a guide bar 200 is provided between the downstream-side medium support portion 3C and the winding portion 6 in the conveyance direction A. The guide bar 200 has an arc-shaped contact surface 201 when viewed from the width direction B. Then, the guide bar 200 guides the conveyance of the medium M by the contact surface 201 contacting the supported surface M2 of the medium M wound by the winding portion 6. However, the configuration of the guide bar 200 is not particularly limited, and further, a configuration without the guide bar 200 may be employed.

[0034] Next, in addition to FIG. 1, referring to FIGS. 2 to 10, the roll body transport cart 100 of this embodiment will be described in detail. In FIG. 2, the roll body R1 is represented by a dashed line so that the configuration of the roll body transport cart 100 can be easily understood. The roll body transport cart 100 of this embodiment is a roll body transport cart that transports the roll body R1 in which the medium M is wound in a roll shape and the roll body R2 in which the printed medium M is wound in a roll shape. Therefore, although the following description is given when transporting the roll body R1, the description of the roll body R1 in the following description can be read as the roll body R2.

[0035] As shown in FIGS. 2 to 6 and the like, the cart 100 for transporting a roll body according to this embodiment has a base portion 110 provided with wheels 111 and a placement portion 120 supported by the base portion 110 for placing a roll body R1 around which a medium M is wound in a roll shape. Further, as shown in FIG. 7, it has a height adjustment portion 130 that supports the placement portion 120 and adjusts the height of the placement portion 120 with respect to the base portion 110, and an operation portion 140 that operates the height adjustment portion 130. Specifically, as the height adjustment portion 130, it has a first height adjustment portion 130A that supports the placement portion 120 and adjusts the height of the placement portion 120 with respect to the base portion 110, and a second height adjustment portion 130B that supports the placement portion 120 and adjusts the height of the placement portion 120 with respect to the base portion 110, and the operation portion 140 operates both the first height adjustment portion 130A and the second height adjustment portion 130B. Note that the first height adjustment portion 130A and the second height adjustment portion 130B have the same configuration. More specifically, as shown in FIG. 7, the first height adjustment portion 130A and the second height adjustment portion 130B are arranged at intervals in the X-axis direction, which is the axial direction of the roll body R1 when placed on the placement portion 120, and the operation portion 140 is configured to be able to adjust the height of the placement portion 120 by synchronizing the first height adjustment portion 130A and the second height adjustment portion 130B.

[0036] In this way, by adopting a configuration in which the operation portion 140 synchronizes the first height adjustment portion 130A and the second height adjustment portion 130B arranged at intervals in the X-axis direction to adjust the height of the placement portion 120, the height of the roll body R1 can be adjusted while synchronizing a plurality of height adjustment portions 130, namely, the first height adjustment portion 130A and the second height adjustment portion 130B, in the axial direction of the roll body R1. Therefore, with such a configuration, it is possible to stably hold the roll body R1 supported by the supply portion 2 in a posture that can be clamped in the X-axis direction and move it in the height direction, and the setability of the roll body R1 can be improved. Also, with such a configuration, since it is possible to move the roll body R1 in the height direction while stably holding it at a low position, the cart 100 for transporting a roll body can be miniaturized particularly in the height direction.

[0037] In the cart 100 for transporting the roll body of the present embodiment, the first height adjustment unit 130A and the second height adjustment unit 130B have the same configuration. As shown in FIGS. 9 and 10, both the first height adjustment unit 130A and the second height adjustment unit 130B have a first rotation shaft 131 and an arm 132 that is connected to the first rotation shaft 131 and is displaced by rotating the first rotation shaft 131. The arm 132 has a front-side arm 132a and a rear-side arm 132b, and constitutes a substantially rhombic contraction mechanism. The connection points of the front-side arm 132a and the rear-side arm 132b arranged on the lower side are connected to the base 110, and the connection points of the front-side arm 132a and the rear-side arm 132b arranged on the upper side are connected to the mounting portion 120.

[0038] Here, the front-side arm 132a has a female screw portion 133a as a connection portion 133, and is connected to the male screw portion 131a of the first rotation shaft 131 at the female screw portion 133a. When the female screw portion 133a engages with the male screw portion 131a, the first rotation shaft 131 moves in the Y-axis direction with respect to the first rotation shaft 131 as the first rotation shaft 131 rotates. On the other hand, the rear-side arm 132b has a connection portion 133b, and at the connection portion 133b, it is connected to the first rotation shaft 131 so as to allow the rotation of the first rotation shaft 131 and not move in the Y-axis direction with respect to the first rotation shaft 131. For this reason, the substantially rhombic arm 132 contracts and expands in the Y-axis direction as the first rotation shaft 131 rotates, and accordingly, the position of the connection point of the front-side arm 132a and the rear-side arm 132b arranged on the upper side is displaced in the height direction. That is, as the first rotation shaft 131 rotates, the position of the mounting portion 120 in the height direction with respect to the base 110 is displaced.

[0039] In other words, in the roll body transport cart 100 of the present embodiment, the first height adjustment unit 130A and the second height adjustment unit 130B are pantograph jacks. Since the first height adjustment unit 130A and the second height adjustment unit 130B are pantograph jacks, the first height adjustment unit 130A and the second height adjustment unit 130B can have a simple configuration. However, it is not limited to such a configuration, and the first height adjustment unit 130A and the second height adjustment unit 130B may be configured by means other than pantograph jacks.

[0040] More specifically, the pantograph jacks of the first height adjustment unit 130A and the second height adjustment unit 130B of the present embodiment have a first rotating shaft 131 that is a threaded rod and arms 132 that form a rhombic contraction mechanism. The arms 132 are connected to the first rotating shaft 131, and the length in the height direction is displaced by rotating the first rotating shaft 131. With such a configuration, the roll body transport cart 100 of the present embodiment can stably adjust the height of the roll body R1 with the first height adjustment unit 130A and the second height adjustment unit 130B.

[0041] Here, as shown in FIGS. 9 and 10, the first rotating shaft 131 is connected to the second rotating shaft 141. And the second rotating shaft 141 is connected to the handle rotating shaft 142a of the handle 142 provided on the operation unit 140. With such a configuration, when the operator rotates the handle 142 with the Y-axis direction as the rotation axis in the roll body transport cart 100 of the present embodiment, the second rotating shaft 141 rotates corresponding to the rotation of the handle 142, and further, both first rotating shafts 131 of the first height adjustment unit 130A and the second height adjustment unit 130B rotate corresponding to the rotation of the second rotating shaft 141.

[0042] Thus, in the cart 100 for transporting the roll body of this embodiment, the operation unit 140 is configured to perform operations by rotating the handle 142 to rotate the handle rotation shaft 142a. Then, as shown in FIG. 7, the handle rotation shaft 142a is located between the first height adjustment unit 130A and the second height adjustment unit 130B in the X-axis direction corresponding to the axial direction of the roll body R1 when placed on the placement unit 120. With such a configuration, the cart 100 for transporting the roll body of this embodiment can stably adjust the height of the roll body R1 with the first height adjustment unit 130A and the second height adjustment unit 130B.

[0043] In particular, in the cart 100 for transporting the roll body of this embodiment, it is located at a position approximately in the center between the first height adjustment unit 130A and the second height adjustment unit 130B in the X-axis direction. With such a configuration, the cart 100 for transporting the roll body of this embodiment can improve the synchronization accuracy between the first height adjustment unit 130A and the second height adjustment unit 130B, and can particularly stably adjust the height of the roll body R1. Further, the operation unit 140 can be displaced between a state of using the handle 142 shown in FIG. 5 and a state of accommodating the handle 142 shown in FIG. 6. Therefore, it is possible to prevent the handle 142 from getting in the way when the operator is not working.

[0044] Also, as shown in FIGS. 9 and 10, at the tip portion which is the +Y direction side end portion of the first rotation axis 131, a stoppers 131b as a limiting portion for restricting excessive movement in the +Y direction of the female screw portion 133a which is the connecting portion 133 of the front arm 132a with respect to the first rotation axis 131 is provided. For this reason, when the mounting portion 120 is lowered with respect to the base portion 110, it is configured to be able to suppress the angle between the front arm 132a and the rear arm 132b from opening too much and the height adjustment portion 130 from being damaged. Further, with respect to the tip portion of the first rotation axis 131, at a position closer to the rear end portion which is the -Y direction side end portion of the first rotation axis 131, in order to suppress the height adjustment portion 130 from being damaged when the arm 132 is closed too much when the mounting portion 120 is raised with respect to the base portion 110, a stopper 131c as a limiting portion that abuts against a part of the front arm 132a when the angle between the front arm 132a and the rear arm 132b is closed too much is provided.

[0045] As described above, in the roll body transporting cart 100 of the present embodiment, stoppers 131b and 131c as limiting portions for restricting the displacement range of the arm 132 are provided on the first rotation axis 131. By having such a configuration, in the roll body transporting cart 100 of the present embodiment, it is possible to suppress the arm 132 from being displaced beyond a predetermined displacement range. Further, although there is a possibility that the working load when using the handle 142 may increase more than expected when the arm 132 is opened too much or closed too much, by having such a configuration, it is also possible to reduce such a possibility.

[0046] Also, as shown in FIGS. 4, 9, and 10, the first height adjustment unit 130A and the second height adjustment unit 130B, which are pantograph jacks of the roll body carrier 100 of the present embodiment, have a cover 134 that covers a portion protruding from the front arm 132a of the first rotation shaft 131 toward the +Y direction side. Therefore, in the roll body carrier 100 of the present embodiment, it is possible to prevent an operator from coming into contact with a portion protruding from the arm 132 of the first rotation shaft 131, and for example, it is possible to prevent the operator from being soiled by oil or the like applied to the first rotation shaft 131. Note that the cover 134 of the present embodiment is configured to cover only a portion protruding from the front arm 132a toward the +Y direction side when the mounting portion 120 is raised, thereby suppressing an increase in the size of the roll body carrier 100 due to the arrangement of a large cover.

[0047] Also, as shown in FIGS. 2 to 6 and the like, the mounting portion 120 of the roll body carrier 100 of the present embodiment has two handles 121 provided at intervals in the axial direction (X-axis direction) of the roll body R1 when mounted on the mounting portion 120. In this way, since the mounting portion 120 has a plurality of handles 121 provided at intervals in the X-axis direction, when transporting the roll body R1, the operator can hold the plurality of handles and suitably transport the roll body R1. Further, since the handle 121 is directly provided on the mounting portion 120, it is possible to suppress the interposition of a plurality of components between the handle 121 and the mounting portion 120, and it is possible to suppress rattling between the handle 121 and the mounting portion 120 when transporting the roll body R1.

[0048] More specifically, the two handles 121 are provided at positions sandwiching the first height adjustment unit 130A and the second height adjustment unit 130B in the X-axis direction. Therefore, when transporting the roll body R1, the operator can hold each handle 121 and stably transport the roll body R1 with both hands.

[0049] Note that, as described above, the roll body transport cart 100 of this embodiment can be stored at the storage position P1 of the printing device 1. As shown in FIGS. 2 to 4, the roll body transport cart 100 of this embodiment has a magnet 112 in the X-axis direction of the base 110. On the other hand, at the storage position P1 of the printing device 1, as shown in FIG. 8, a sheet metal 71 to which the magnet 112 is attached is formed. By attaching the magnet 112 to the sheet metal 71 at the storage position P1 of the printing device 1, the roll body transport cart 100 of this embodiment can be suitably stored at the storage position P1 of the printing device 1.

[0050] The present invention is not limited to the above-described embodiments, and can be realized in various configurations without departing from the gist thereof. Also, the technical features in the embodiments corresponding to the technical features in each form described in the summary of the invention can be appropriately replaced or combined in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. Further, if the technical feature is not described as essential in this specification, it can be appropriately deleted.

Explanation of Reference Numerals

[0051] 1. Printing device, 2. Supply unit, 3. Medium support unit, 3A. Upstream medium support unit, 3B. Medium support unit, 3C. Downstream medium support unit, 4. Carriage, 5. Head, 6. Take-up unit, 7. Leg frame, 8. Roller pair, 9. Main body unit, 10. Blower unit, 11. Fan, 20. Heater, 30. Support surface, 100. Cart for transporting roll body, 110. Base, 111. Wheel, 112. Magnet, 120. Placement unit, 121. Handle, 130. Height adjustment unit, 130A. First height adjustment unit (pantograph jack), 130B. Second height adjustment unit (pantograph jack), 131. First rotation axis (threaded rod), 131a. Male thread part, 131b. Stopping part, 131c. Stopping part, 132. Arm, 132a. Front side arm, 132b. Rear side arm, 133. Connection part, 133a. Female thread part, 133b. Connection part, 134. Cover, 140. Operation unit, 141. Second rotation axis, 142. Handle, 142a. Handle rotation axis, 200. Guide bar, 201. Contact surface, M. Medium, M1. Image forming surface, M2. Supported surface, P1. Storage position, R1. Roll body, R2. Roll body

Claims

1. A base on which wheels are provided, a placement part supported by the base and on which a roll body with a medium wound in a roll shape is placed, a first height adjustment part that supports the placement part and adjusts the height of the placement part with respect to the base, a second height adjustment part that supports the placement part and adjusts the height of the placement part with respect to the base, an operation part that operates the first height adjustment part and the second height adjustment part, and having, the first height adjustment part and the second height adjustment part are arranged at intervals in the axial direction of the roll body when placed on the placement part, the operation part is characterized in that it adjusts the height of the placement part by synchronizing the first height adjustment part and the second height adjustment part. A trolley for transporting a roll body.

2. In the trolley for transporting a roll body according to Claim 1, the placement part is characterized by having a plurality of handles provided at intervals in the axial direction of the roll body when placed on the placement part. A trolley for transporting a roll body.

3. In the trolley for transporting a roll body according to Claim 2, the plurality of handles are provided at positions sandwiching the first height adjustment part and the second height adjustment part in the axial direction of the roll body when placed on the placement part. A trolley for transporting a roll body.

4. In the trolley for transporting a roll body according to any one of Claims 1 to 3, the operation part performs an operation by rotating a handle to rotate a handle rotation shaft, the handle rotation shaft is located at a position between the first height adjustment part and the second height adjustment part in the axial direction of the roll body when placed on the placement part. A trolley for transporting a roll body.

5. In the trolley for transporting a roll body according to any one of Claims 1 to 3, the first height adjustment part and the second height adjustment part are characterized by being pantograph jacks. A trolley for transporting a roll body.

6. In the trolley for transporting a roll body according to Claim 5, the pantograph jack has a screw rod and an arm constituting a rhombus contraction mechanism, the arm is connected to the screw rod, and the length in the height direction is displaced by rotating the screw rod. A trolley for transporting a roll body.

7. In the trolley for transporting a roll body according to Claim 6, the screw rod is characterized by being provided with a limiting part for limiting the displacement range of the arm. A trolley for transporting a roll body.

8. In the trolley for transporting a roll body according to claim 6, The pantograph jack has a cover that covers a portion that protrudes from the arm of the screw rod, and the trolley for transporting a roll body is characterized by this.

Images