Moving mechanism and printing device
The moving mechanism addresses the challenge of high load on drive motors in existing table moving systems by using an X-shaped link member configuration and a trapezoidal screw, reducing the load on the drive source and enhancing rigidity and moving distance.
Patent Information
- Application Number
- JP2021059347
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-03-31
- Publication Date
- 2025-06-18
- Estimated Expiration
- 2041-03-31
Smart Images
Figure 0007694113000001 
Figure 0007694113000002 
Figure 0007694113000003
Abstract
Description
Technical Field
[0001] The present invention relates to a moving mechanism for moving a table and a printing apparatus.
Background Art
[0002] The table device described in Citation Document 1 raises and lowers a table using a telescopic mechanism in which a pair of link members are arranged opposite to each other. The link member is a member in which two long members are connected in an X shape so as to be rotatable relative to each other. The telescopic mechanism has a table disposed on the upper end side and a support member disposed on the lower end side. The support member rotatably supports the lower end portion of one of the long members of each link member by a pin and a round hole, and movably supports the lower end portion of the other long member by a pin and a long hole extending in the front-rear direction. A drive motor is provided on the front side of the support member. The drive motor moves the lower end portion of the other long member of each link member in the front-rear direction. When the drive motor moves the lower end portion of the other long member rearward to approach the lower end portion of one long member, the pair of long members rotate relative to each other so that their respective extending directions change from the front-rear direction to the vertical direction, thereby raising the table. When the drive motor moves the lower end portion of the other long member forward to move away from the lower end portion of one long member, the pair of long members rotate relative to each other so that their respective extending directions change from the vertical direction to the front-rear direction, thereby lowering the table.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In Citation Document 1, in the state where the table is in the most lowered state, the long member of the link member lies in a posture that is tilted in the front-rear direction in a state close to horizontal on the support member. When raising the table from this state, the drive motor needs a large force to rotate the long member in a posture that has fallen to a substantially horizontal posture. In such a table device, when raising the table from the lowest state with an overload applied to the table, there was a possibility that a large load would be applied to the drive motor.
[0005] An object of the present invention is to provide a moving mechanism and a printing apparatus that can reduce the load applied to the movement of the table.
Means for Solving the Problems
[0006] The moving mechanism according to the first aspect of the present invention is a moving mechanism capable of moving a table in a first direction, wherein two long members are connected to each other in an X shape so as to be rotatable, a first link member that is stretchable in the first direction, two long members are connected to each other in an X shape so as to be rotatable, a second link member that is stretchable in the first direction and is disposed opposite to the first link member in a second direction intersecting the first direction, a first frame member disposed on one end side of the first link member and the second link member on one side in the first direction, for supporting the first link member and the second link member respectively, a second frame member disposed on the other end side of the first link member and the second link member on the other side in the first direction, and on which the table is disposed on the other side in the first direction, a rod-shaped member having a thread formed thereon, engaging with an engaging portion provided on the second frame member, and a rotating member for moving the second frame member and the table in the first direction by rotating, the first frame member is provided on one side in a third direction intersecting the first direction and the second direction, a first support portion for rotatably supporting each of one end of one long member of the first link member and one end of one long member of the second link member, provided on the other side in the third direction, and a first guiding portion for guiding each of one end of the other long member of the first link member and one end of the other long member of the second link member to be movable in the third direction, the second frame member is provided on one side in the third direction, a second support portion for rotatably supporting each of the other end of the other long member of the first link member and the other end of the other long member of the second link member, provided on the other side in the third direction, and a second guiding portion for guiding each of the other end of the one long member of the first link member and the other end of the one long member of the second link member to be movable in the third direction.
[0007] The moving mechanism does not directly apply force to the first link member and the second link member, but moves the second frame member and the table by the rotation of the rotating member. The first link member and the second link member are driven to expand and contract according to the positional relationship between the first frame member and the second frame member, and support the second frame member via itself with respect to the first frame member. Therefore, the moving mechanism can reduce the load applied to the rotating member as compared with a configuration in which force is directly applied to the first link member and the second link member to expand and contract them.
[0008] In the first aspect, the long members respectively included in the first link member and the second link member may each have a shape that tapers in the width direction from the central portion in the extending direction toward the end portions on both sides. When the first link member and the second link member contract, the end portions on both sides of the long member can approach each other in the first direction as compared with a long member having the same width at the end portion and the central portion. Therefore, the moving mechanism can make the moving distance of the table longer without changing the length of the long member.
[0009] The engaging portion in the first aspect may be provided on one side of the second frame member in the third direction. The second support portion and the engaging portion are provided on one side of the second frame member. The second support portion can move in the first direction by the first link member and the second link member with respect to the first support portion, but the movement in the second direction and the third direction is restricted. Also, the second frame member can move in the first direction by the rotating member, but the movement in the second direction and the third direction is restricted. Therefore, the moving mechanism can ensure the rigidity of the second frame member on one side in the third direction by the first link member, the second link member, and the rotating member.
[0010] The first aspect may include an extension member extending in the first direction, and a guiding member provided on one side of the second frame member in the third direction, for guiding the relative movement of the extension member in the first direction while holding the extension member. The second support portion and the guiding member are provided on one side of the second frame member. The second support portion can move in the first direction with respect to the first support portion by the first link member and the second link member, but the movement in the second direction and the third direction is restricted. Also, the second frame member can move in the first direction by the extension member, but the movement in the second direction and the third direction is restricted. Therefore, the movement mechanism can ensure the rigidity of the second frame member on one side in the third direction by the first link member, the second link member, and the extension member.
[0011] The first aspect includes a first plate member connected to the first frame member on one side of the third direction of the first frame member, being plate-shaped and extending in the second direction and the third direction, and holding one end portion of the extension member on one side in the first direction; a second plate member connected to the second frame member on one side of the third direction of the second frame member, being plate-shaped and extending in the first direction and the second direction, and having a bent portion where a part on the other side in the first direction is bent toward one side in the third direction, and holding the other end portion of the extension member on the other side in the first direction at the bent portion; and a third plate member being plate-shaped and bent, and connecting the first plate member and the second plate member. The first plate member and the second plate member are connected by the third plate member, and further, by holding both ends of the extension member, each is positioned, so that the rigidity of the extension member can be ensured. Therefore, the movement mechanism can ensure the rigidity of the second frame member on one side in the third direction by the second frame member holding the extension member with the guiding member.
[0012] The first plate member of the first aspect may have a bearing portion that rotatably supports the rotating member. The rotating member is supported by the first plate member having the bearing portion. The first plate member is connected to the first frame member. Therefore, the moving mechanism can move the second frame member and the table in the first direction by the rotating member with reference to the first frame member.
[0013] The first aspect may include a driving portion provided on the first plate member and configured to apply a driving force to the rotating member to rotate the rotating member. By providing the driving portion at a position close to the rotating member and reducing the loss in the transmission of the driving force, the load applied to the driving portion during the movement of the table can be reduced.
[0014] In the first aspect, a shaft-shaped shaft member extending in the second direction is provided at an end of the long member, and the first support portion of the first frame member and the second support portion of the second frame member are round holes that engage with the shaft member. The first guide portion of the first frame member and the second guide portion of the second frame member may be long holes that engage with the shaft member. The first frame member, the second frame member, the first link member, and the second link member are connected by the engagement of the shaft member with the round hole and the long hole. Therefore, the moving mechanism can simplify the configuration and reduce the manufacturing cost.
[0015] The second frame member of the first aspect extends in the second direction and includes at least a first frame portion provided with the engaging portion that engages with the rotating member, and a pair of second frame portions extending from both ends of the first frame portion in the second direction toward the other side in the third direction and having the second support portion and the second guide portion. The moving mechanism can ensure rigidity in supporting the table by using the second frame member having at least the first frame portion and the second frame portion. Further, since the moving mechanism can reduce the weight with the second frame member as the minimum necessary framework, the load applied to the rotating member can be reduced.
[0016] The rotating member of the first aspect may be a trapezoidal screw having the trapezoidal thread formed thereon. Thereby, while reducing the load applied to the rotating member, the table can be accurately moved.
[0017] The printing apparatus according to the second aspect of the present invention includes the moving mechanism according to any one of claims 1 to 9, and a head that discharges ink toward an object to be printed disposed on the table of the moving mechanism. By reducing the load applied to the drive source due to an overload applied to the table and providing a moving mechanism with high rigidity, a long-life printing apparatus can be provided in which the object to be printed is less likely to be displaced during table movement.
[0018] The ink of the second aspect may be UV ink that is cured by ultraviolet rays, and may include a UV irradiation unit that is provided integrally with the head and irradiates ultraviolet rays toward the object to be printed. Even when the height of the printing surface often varies depending on the object to be printed, a printing apparatus can be provided in which the table can be moved to an appropriate height position with respect to the head by the moving mechanism for printing, and the object to be printed is less likely to be displaced during table movement.
Brief Description of the Drawings
[0019]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Embodiments for Carrying out the Invention
[0020] Referring to the drawings, the printer 1 according to an embodiment of the present invention will be described. Above, below, lower left, upper right, lower right, and upper left in FIG. 1 are the upper, lower, front, rear, right, and left sides of the printer 1, respectively. In the following description, the left - right direction may be described as the main scanning direction, and the front - rear direction may be described as the sub - scanning direction. In this embodiment, the mechanical elements in the drawings are shown at the actual scale. The printer 1 is a device that prints images such as characters, graphics, and symbols on a printing object by ejecting ultraviolet - curable ink (hereinafter referred to as "UV ink") onto the printing object and irradiating it with ultraviolet light to cure it.
[0021] Referring to FIG. 1, the schematic configuration of the printer 1 will be described. As shown in FIG. 1, the main body 2 of the printer 1 includes a mounting portion 17, a conveying portion 6, a lifting device 100, and a platen 5. Note that the printer 1 in FIG. 1 is shown with its exterior cover removed. The main body 2 has an opening 21 that penetrates in the front - rear direction. The printer 1 includes an operation portion for receiving input of instructions regarding various operations of the printer 1 by the user on the front surface of the main body 2, on the right side of the opening 21. The mounting portion 17 is provided on the right side of the main body 2. A plurality of cartridges 18 are mounted on the mounting portion 17 from the front side. Each cartridge 18 contains each color liquid of the UV ink used for printing.
[0022] The conveying unit 6 is provided below the opening 21. The conveying unit 6 conveys the lifting device 100 in the front-rear direction. The conveying unit 6 has a pair of guide rails 14A and 14B. The guide rails 14A and 14B extend in the front-rear direction. The guide rails 14A and 14B are arranged parallel to each other with a space therebetween in the left-right direction. The guide rails 14A and 14B support the lifting device 100 so as to be movable in the sub-scanning direction. The sub-scanning direction in the present embodiment is the front-rear direction. A sub-scanning motor is provided below the lifting device 100. As the sub-scanning motor is driven, the lifting device 100 moves in the front-rear direction along the guide rails 14A and 14B. FIG. 1 shows a state where the lifting device 100 has moved to the front end.
[0023] The platen 5 is in the shape of a plate that is rectangular in plan view. The platen 5 is supported by the lifting device 100. The platen 5 moves in the front-rear direction together with the lifting device 100. On the upper surface of the platen 5, a non-absorbent material, for example, plastics such as polyethylene terephthalate (PET) and polycarbonate (PC), is placed as an object to be printed.
[0024] The main body 2 further includes a guide shaft 9, a guide rail 11, and a carriage 20. The guide shaft 9 and the guide rail 11 each extend in the left-right direction. The guide shaft 9 is arranged in front of the upper part of the main body 2. The guide rail 11 is arranged parallel to the guide shaft 9 with a space therebetween behind the guide shaft 9. The guide shaft 9 and the guide rail 11 support the carriage 20 so as to be movable in the main scanning direction. The main scanning direction in the present embodiment is the left-right direction. A main scanning motor 19 is provided on the right side of the right end of the guide shaft 9. As the main scanning motor 19 is driven, the carriage 20 moves in the left-right direction along the guide shaft 9 and the guide rail 11. FIG. 1 shows a state where the carriage 20 has moved to the left end.
[0025] The carriage 20 includes heads 10A and 10B that discharge UV ink downward, and UV irradiation devices 8A and 8B that irradiate ultraviolet (UV) light downward. In the present embodiment, the heads 10A and 10B have piezoelectric elements for pressurizing the UV ink. However, the heads 10A and 10B may have heaters for heating the UV ink instead of the piezoelectric elements. The UV irradiation devices 8A and 8B are respectively arranged on the right sides of the heads 10A and 10B. The UV irradiation devices 8A and 8B irradiate UV light onto the UV ink discharged by the heads 10A and 10B onto the printing object.
[0026] According to the above configuration, the printer 1 moves the heads 10A and 10B and the UV irradiation devices 8A and 8B in the main scanning direction. The printer 1 discharges UV ink from each nozzle of the heads 10A and 10B onto the printing object on the platen 5, and irradiates UV light from the UV irradiation devices 8A and 8B respectively to cure the UV ink. The printer 1 moves the platen 5 in the sub-scanning direction. By repeating the above process, the printer 1 prints an image such as characters, graphics, and symbols on the printing object on the platen 5.
[0027] Referring to FIGS. 2 to 6, the detailed structure of the lifting device 100 will be described. The lifting device 100 shown in FIG. 2 is a device that moves the platen 5 in the vertical direction during printing, and arranges the printing object placed on the platen 5 at a position where the vertical distance from the heads 10A and 10B is appropriate. The lifting device 100 in FIG. 3 is in a state where the platen 5 shown in FIG. 2 is removed. As shown in FIG. 3, the lifting device 100 includes a right link member 101, a left link member 102, a lower frame member 103, an upper frame member 104, and a drive mechanism 105.
[0028] The right link member 101 includes two long members 120 and 130. The long members 120 and 130 are long, plate-shaped steel materials. The edges of the long members 120 and 130 extend on both sides in the thickness direction. Therefore, the long members 120 and 130 ensure strength against bending. The long member 120 has substantially the same shape as the long member 130. The long member 120 is arranged on the right side of the long member 130. The long member 120 and the long member 130 are supported by a connecting shaft 111 at the central portions 122 and 132 in their respective extending directions and are connected in an X shape so as to be rotatable relative to each other. The rear end portion 123, which is one end portion of the long member 120, is arranged behind the front end portion 124, which is the other end portion, and is arranged below the rear end portion 133, which is the other end portion of the long member 130. The front end portion 134, which is one end portion of the long member 130, is arranged in front of the rear end portion 133 and is arranged below the front end portion 124 of the long member 120. When the long members 120 and 130 are viewed from the side, the shapes of the portions from the respective central portions 122 and 132 to the front end portions 124 and 134 are shapes in which the width gradually decreases toward the front end portions 124 and 134, that is, so-called tapered shapes. Similarly, the shapes of the portions from the respective central portions 122 and 132 to the rear end portions 123 and 133 are shapes in which the width tapers toward the rear end portions 123 and 133. The shape of the portion from the central portions 122 and 132 to the front end portions 124 and 134 is substantially the same as the shape of the portion from the central portions 122 and 132 to the rear end portions 123 and 133. That is, as shown in FIG. 4, the long members 120 and 130 each represent a parallelogram shape in a side view.
[0029] As shown in FIG. 3, the left link member 102 is a member provided in a pair with a configuration substantially the same as that of the right link member 101. The left link member 102 is disposed opposite to the right link member 101 on the left side of the right link member 101. The left link member 102 includes two elongated members 140 and 150. The elongated members 140 and 150 are plate-shaped steel materials that extend long. The edges of the elongated members 140 and 150 extend on both sides in the thickness direction. Therefore, the elongated members 140 and 150 ensure strength against bending. The elongated member 140 has substantially the same shape as the elongated member 150. The elongated member 140 is disposed on the left side of the elongated member 150. The elongated member 140 and the elongated member 150 are supported by the connecting shaft 112 at the central portions 142 and 152 in their respective extending directions, and are connected in an X shape so as to be rotatable relative to each other. The rear end portion 143, which is one end portion of the elongated member 140, is disposed rearward of the front end portion 144, which is the other end portion, and is disposed below the rear end portion 153, which is the other end portion of the elongated member 150. The front end portion 154, which is one end portion of the elongated member 150, is disposed forward of the rear end portion 153 and is disposed below the front end portion 144 of the elongated member 140. When the elongated members 140 and 150 are viewed from the side, the shape of the portions from the respective central portions 142 and 152 to the front end portions 144 and 154 is a shape in which the width tapers toward the front end portions 144 and 154. Similarly, the shape of the portions from the respective central portions 142 and 152 to the rear end portions 143 and 153 is a shape in which the width tapers toward the rear end portions 143 and 153. The shape of the portions from the central portions 142 and 152 to the front end portions 144 and 154 is substantially the same as the shape of the portions from the central portions 122 and 132 to the rear end portions 143 and 153. That is, the elongated members 140 and 150, similar to the elongated members 120 and 130, each represent a parallelogram shape in a side view.
[0030] The lower frame member 103 is disposed below the right link member 101 and the left link member 102. The lower frame member 103 is a member that supports each of the right link member 101 and the left link member 102 from below. The lower frame member 103 extends in the front-rear direction and has a configuration in which a pair of right lower frame portions 160 and left lower frame portions 170 that are arranged to face each other in the left-right direction are bridged and supported by a front bridging portion 180, a rear bridging portion 182, and a middle bridging portion 183, respectively. The right lower frame portion 160 is a member formed by bending a plate-shaped steel material. The right lower frame portion 160 has a substantially rectangular plate-shaped side plate portion 162 that extends in the front-rear direction with the left-right direction as the thickness direction, and an upper plate portion 163 and a lower plate portion 164 that extend leftward in a plate shape from the upper and lower edge portions of the side plate portion 162, respectively. The long members 120 and 130 of the right link member 101 are disposed on the right side of the side plate portion 162. The left lower frame portion 170 is a member provided in a pair with the right lower frame portion 160 and having a configuration substantially the same as that of the right lower frame portion 160. The left lower frame portion 170 is disposed to face the right lower frame portion 160 on the left side of the right lower frame portion 160. The left lower frame portion 170 is formed by bending a plate-shaped steel material. The left lower frame portion 170 has a substantially rectangular plate-shaped side plate portion 172 that extends in the front-rear direction with the left-right direction as the thickness direction, and an upper plate portion 173 and a lower plate portion 174 that extend rightward in a plate shape from the upper and lower edge portions of the side plate portion 172, respectively. The long members 140 and 150 of the left link member 102 are disposed on the left side of the side plate portion 172.
[0031] The front cross member 180 is a round bar-shaped steel material. Both ends of the front cross member 180 are fixed to the left side surface of the front end portion of the side plate portion 162 of the lower right frame portion 160 and the right side surface of the front end portion of the side plate portion 172 of the lower left frame portion 170 with screws respectively. The rear cross member 182 is arranged with the thickness direction in the vertical direction and extends in the horizontal direction. The rear cross member 182 is a plate-shaped steel material. The right end portion of the rear cross member 182 is arranged above the lower plate portion 164 at the rear end portion of the lower right frame portion 160 and is fixed to the lower plate portion 164 with screws. Similarly, the left end portion of the rear cross member 182 is arranged above the lower plate portion 174 at the rear end portion of the lower left frame portion 170 and is fixed to the lower plate portion 174 with screws. The middle cross member 183 is substantially rectangular in plan view, and the edge portion and the middle portion have a thickness corresponding to the height of the side plate portion 162 of the lower right frame portion 160. The middle cross member 183 is a plate-shaped steel material. The middle cross member 183 is arranged between the front cross member 180 and the rear cross member 182 in the front-rear direction. The right edge portion of the middle cross member 183 is arranged between the upper plate portion 163 and the lower plate portion 164 at the middle portion of the lower right frame portion 160 and is fixed to the lower plate portion 164 with screws. Similarly, the left edge portion of the middle cross member 183 is arranged between the upper plate portion 173 and the lower plate portion 174 at the middle portion of the lower left frame portion 170 and is fixed to the lower plate portion 174 with screws.
[0032] The side plate portion 162 of the lower right frame portion 160 and the side plate portion 172 of the lower left frame portion 170 have round hole-shaped support holes 165 and 175 at their respective rear end portions. Round bar-shaped support shafts 113 extending in the horizontal direction are inserted into the support holes 165 and 175 respectively. The support shafts 113 are rotatably supported by the support holes 165 and 175 respectively. The rear end portion 123 of the long member 120 of the right link member 101 rotatably holds the right end of the support shaft 113 on the right side of the support hole 165. The rear end portion 143 of the long member 140 of the left link member 102 rotatably holds the left end of the support shaft 113 on the left side of the support hole 175. Therefore, the long member 120 and the long member 140 are rotatably supported with respect to the rear end portions of the lower right frame portion 160 and the lower left frame portion 170 respectively.
[0033] The side plate portion 162 of the lower right frame portion 160 and the side plate portion 172 of the lower left frame portion 170 each have elongated hole-shaped guide holes 166 and 176 extending in the front-rear direction at their respective front ends. Round bar-shaped guide shafts 114 extending in the left-right direction are inserted into the guide holes 166 and 176 respectively. The guide shaft 114 is movable in the front-rear direction along the guide holes 166 and 176 and is rotatably supported by the guide holes 166 and 176. The front end portion 134 of the long member 130 of the right link member 101 rotatably holds the right end of the guide shaft 114 on the right side of the guide hole 166. The front end portion 154 of the long member 150 of the left link member 102 rotatably holds the left end of the guide shaft 114 on the left side of the guide hole 176. Therefore, the long member 130 and the long member 150 are rotatably and movably supported with respect to the front end portions of the lower right frame portion 160 and the lower left frame portion 170 in the front-rear direction respectively.
[0034] The lower right frame portion 160 and the lower left frame portion 170 are formed by bending to ensure rigidity against bending. The front cross member 180, the rear cross member 182 and the middle cross member 183 are bridged between the lower right frame portion 160 and the lower left frame portion 170, and both ends are fixed to position the lower right frame portion 160 and the lower left frame portion 170. The middle cross member 183 ensures rigidity by means of a rib structure. Therefore, the lower frame member 103 can ensure sufficient rigidity against bending and torsion in the vertical and horizontal directions.
[0035] The upper frame member 104 is disposed above the right link member 101 and the left link member 102. The upper frame member 104 supports the platen 5 disposed on the upper surface. The upper frame member 104 is a member that is supported by the right link member 101 and the left link member 102 so as to be movable in the vertical direction. The upper frame member 104 extends in the front-rear direction. The upper frame member 104 connects both ends of a pair of right upper frame portions 190 and left upper frame portions 200 that are disposed opposing each other in the left-right direction with a front frame portion 210 and a rear frame portion 220, respectively. Thereby, the upper frame member 104 is formed in a rectangular frame shape in plan view. The upper frame member 104 is larger than the lower frame member 103 and has a size capable of accommodating the lower frame member 103 within the frame.
[0036] The right upper frame portion 190 is a member formed by bending a plate-shaped steel material. The right upper frame portion 190 has the left-right direction as the thickness direction. The right upper frame portion 190 has a substantially rectangular and plate-shaped side plate portion 192 that extends in the front-rear direction, and an upper plate portion 193 and a lower plate portion 194 that extend rightward in a plate shape from the upper and lower edge portions of the side plate portion 192, respectively. The long members 120 and 130 of the right link member 101 are respectively disposed on the left side of the side plate portion 192. The right upper frame portion 190 is longer than the lower right frame portion 160 of the lower frame member 103. The left upper frame portion 200 is a member provided in a pair with the right upper frame portion 190 having a configuration substantially the same as that of the right upper frame portion 190. The left upper frame portion 200 is disposed to face the right upper frame portion 190 on the left side of the right upper frame portion 190. The left upper frame portion 200 is a member formed by bending a plate-shaped steel material. The left upper frame portion 200 has the left-right direction as the thickness direction. The left upper frame portion 200 has a substantially rectangular and plate-shaped side plate portion 202 that extends in the front-rear direction, and an upper plate portion 203 and a lower plate portion 204 that extend leftward in a plate shape from the upper and lower edge portions of the side plate portion 202, respectively. The long members 140 and 150 of the left link member 102 are respectively disposed on the right side of the side plate portion 202. The left upper frame portion 200 has the same length as the right upper frame portion 190 and is longer than the lower left frame portion 170 of the lower frame member 103.
[0037] The front frame portion 210 is a member formed by bending a plate-shaped steel material extending in the left-right direction into an L-shaped cross-section. The front frame portion 210 has a front plate portion 212 disposed in the front-rear direction in the thickness direction and a lower plate portion 213 disposed in the up-down direction in the thickness direction. The lower plate portion 213 extends rearward from the lower edge portion of the front plate portion 212. The front frame portion 210 disposes the right end portion of the lower plate portion 213 below the lower plate portion 194 at the front end portion of the upper right frame portion 190 and fixes it to the lower plate portion 194 with screws. Similarly, the front frame portion 210 disposes the left end portion of the lower plate portion 213 below the lower plate portion 204 at the front end portion of the upper left frame portion 200 and fixes it to the lower plate portion 204 with screws. The rear frame portion 220 is a member formed by bending a plate-shaped steel material extending in the left-right direction into an L-shaped cross-section. The rear frame portion 220 has a rear plate portion 222 disposed in the front-rear direction in the thickness direction and an upper plate portion 223 disposed in the up-down direction in the thickness direction. The upper plate portion 223 extends forward from the upper edge portion of the rear plate portion 222. The rear frame portion 220 disposes the right end portion of the upper plate portion 223 above the upper plate portion 193 at the rear end portion of the upper right frame portion 190 and fixes it to the upper plate portion 193 with screws. Similarly, the rear frame portion 220 disposes the left end portion of the upper plate portion 223 above the upper plate portion 203 at the rear end portion of the upper left frame portion 200 and fixes it to the upper plate portion 203 with screws.
[0038] The side plate portion 192 of the upper right frame portion 190 and the side plate portion 202 of the upper left frame portion 200 each have round hole-shaped support holes 195, 205 at their respective rear end portions. The support holes 195, 205 rotatably support both ends of a round bar-shaped support shaft 115 extending in the left-right direction. The rear end portion 133 of the long member 130 of the right link member 101 rotatably holds the support shaft 115 on the left side of the support hole 195. The rear end portion 153 of the long member 150 of the left link member 102 rotatably holds the support shaft 115 on the right side of the support hole 205. Therefore, the long member 130 and the long member 150 are rotatably supported with respect to the rear end portion of the upper right frame portion 190 and the rear end portion of the upper left frame portion 200, respectively.
[0039] The side plate portion 192 of the upper right frame portion 190 and the side plate portion 202 of the upper left frame portion 200 each have a long hole-shaped guide hole 196, 206 extending in the front-rear direction at their respective front end portions. A round bar-shaped guide shaft 116 extending in the left-right direction is inserted through the guide holes 196, 206. The guide shaft 116 is movable in the front-rear direction along the guide holes 196, 206 and is rotatably supported by the guide holes 196, 206. The front end portion 124 of the long member 120 of the right link member 101 rotatably holds the guide shaft 116 on the left side of the guide hole 196. The front end portion 144 of the long member 140 of the left link member 102 rotatably holds the guide shaft 116 on the right side of the guide hole 206. Therefore, the long member 120 and the long member 140 are each rotatably and movably supported with respect to the front end portion of the upper right frame portion 190 and the front end portion of the upper left frame portion 200 in the front-rear direction.
[0040] The upper right frame portion 190 and the upper left frame portion 200 are formed by bending to ensure rigidity against bending. The front frame portion 210 and the rear frame portion 220 fix and position both ends of the upper right frame portion 190 and the upper left frame portion 200 in the left-right direction. Therefore, the upper frame member 104 can ensure sufficient rigidity against bending in the vertical and horizontal directions.
[0041] The relative positional relationship between the lower frame member 103 and the upper frame member 104 is ensured by the right link member 101 and the left link member 102. The right link member 101 and the left link member 102 connect the long members 120, 140 and 130, 150 by their respective connecting shafts 111, 112, and the rigidity is ensured by positioning the respective end portions by the support shafts 113, 115 and the guide shafts 114, 116. The lower frame member 103 and the upper frame member 104 support the support shafts 113, 115 by the support holes 165, 175 and 195, 205, respectively. The lower frame member 103 and the upper frame member 104 regulate the vertical movement of the guide shafts 114, 116 by the guide holes 166, 176 and 196, 206, respectively. Therefore, the rigidity against bending in the vertical direction of the lower frame member 103 and the upper frame member 104 can be ensured by the right link member 101 and the left link member 102.
[0042] As shown in FIG. 5, the drive mechanism 105 is provided at the rear end portion of the elevating device 100. The drive mechanism 105 includes a lower plate member 250, a front plate member 260, a connecting member 270, a linear shaft 280, a trapezoidal screw 290, and a drive motor 300.
[0043] As shown in FIG. 5, the lower plate member 250 is a member formed by bending a plate-shaped steel material. The lower plate member 250 has the vertical direction as the thickness direction. The lower plate member 250 has a plate-shaped lower support portion 252 extending in the left-right direction and a downward bent portion 253 having a shape in which the front edge portion of the lower support portion 252 is bent downward. The length of the lower plate member 250 in the left-right direction is slightly larger than the length of the lower frame member 103 in the left-right direction. The lower support portion 252 is connected to the upper surface of the rear end portion of the upper plate portion 163 of the lower right frame portion 160 and the upper surface of the rear end portion of the upper plate portion 173 of the lower left frame portion 170 by two connecting brackets 117, respectively. As shown in FIG. 4, in the downward bent portion 253, the lower end portion of the front surface is in contact with the rear end of the rear cross member 182 of the lower frame member 103.
[0044] As shown in Fig. 5, the front plate member 260 is a member formed by bending a plate-shaped steel material. The front plate member 260 has the front-rear direction as the thickness direction. The front plate member 260 has a plate-shaped front support portion 262 extending in the left-right direction and a rear bending portion 263 having a shape in which the upper edge portion of the front support portion 262 is bent rearward. The length of the front plate member 260 in the left-right direction is slightly smaller than the length of the lower frame member 103 in the left-right direction. The lower surface of the rear bending portion 263 faces the upper surface of the lower support portion 252. The rear corner portions of the rear bending portion 263 are notched on both the left and right sides.
[0045] As shown in Fig. 5, the connecting member 270 is a member formed by bending a plate-shaped steel material into an L-shaped cross section. With the front-rear direction as the thickness direction, it has a front connecting plate 272 extending in the left-right direction and a lower connecting plate 273 extending rearward from the lower edge portion of the front connecting plate 272. The length of the connecting member 270 in the left-right direction is smaller than the length of the front plate member 260 in the left-right direction. The front connecting plate 272 is disposed on the rear side of the lower end portion of the front support portion 262 of the front plate member 260 and is fixed to the front support portion 262 with screws. The lower connecting plate 273 is disposed above the front end portion of the lower support portion 252 of the lower plate member 250 and is fixed to the lower support portion 252 with screws. The lower plate member 250 and the front plate member 260 are connected via the connecting member 270.
[0046] The linear shaft 280 is a pair of round bar-shaped steel materials that guide the vertical movement of the upper frame member 104. In the left-right direction, the linear shafts 280 are respectively disposed at positions outside the connecting member 270 and extend in the vertical direction. The upper end portions of the linear shafts 280 are respectively fixed to the rear bending portion 263 of the front plate member 260 with screws. The lower end portions of the linear shafts 280 are respectively fixed to the lower support portion 252 of the lower plate member 250 with screws. A linear guide 224 guided by the linear shaft 280 is provided on the rear frame portion 220 of the upper frame member 104. The linear guide 224 is assembled on the lower surface side of the upper plate portion 223 and positions the upper frame member 104 with respect to the drive mechanism 105 by holding the linear shaft 280 when the upper frame member 104 moves in the vertical direction.
[0047] The trapezoidal screw 290 is a screw member extending in the vertical direction with a trapezoidal thread formed thereon. The trapezoidal screw 290 is used as a feed screw for transmitting the driving force for the upper frame member 104 to move in the vertical direction. A pair of trapezoidal screws 290 are provided and are respectively arranged at positions outside each of the pair of linear shafts 280 in the left - right direction. The lower end portions of the trapezoidal screws 290 are rotatably supported by bearing portions 226 that are respectively assembled to the lower support portions 252 of the lower plate member 250. An engaging portion 225 having a female screw formed to mesh with the trapezoidal screw 290 is provided on the rear frame portion 220 of the upper frame member 104. The engaging portion 225 is assembled outside each of the pair of linear guides 224 in the left - right direction on the lower surface side of the upper plate portion 223. When the trapezoidal screw 290 rotates, a driving force is transmitted to the engaging portion 225, and the upper frame member 104 moves in the vertical direction.
[0048] The drive motor 300 is a drive source that imparts a rotational driving force to the trapezoidal screw 290. The drive motor 300 is provided behind the connecting member 270 at the lower support portion 252 of the lower plate member 250. As shown in FIG. 6, the drive shaft 302 of the drive motor 300 projects downward from the lower support portion 252, and a pulley 303 is provided. Pulleys 304 are also provided at the lower end portions of the pair of trapezoidal screws 290 respectively. A single belt 305 is looped around the pulley 303 and the two pulleys 304. The driving force due to the rotation of the drive shaft 302 is transmitted to each of the pair of trapezoidal screws 290 via the pulleys 303, 304 and the belt 305.
[0049] The rigidity of the lower plate member 250 against bending in the left - right direction is ensured by bending a downward - bent portion 253 at the front edge portion of the lower plate member 250. Similarly, for the front plate member 260, the rigidity against bending in the left - right direction is ensured by bending a rear - bent portion 263 at the front edge portion of the front plate member 260. By connecting the linear shaft 280 vertically between the lower support portion 252 of the lower plate member 250 and the rear - bent portion 263 of the front plate member 260, the rigidity of the front plate member 260 against bending in the front - rear direction is ensured.
[0050] Referring to FIGS. 6 to 9, the operation of the lifting device 100 will be described. The drive motor 300 drives and rotates the drive shaft 302 when the platen 5 is lifted or lowered. When the platen 5 is lowered, when the pulley 303 connected to the drive shaft 302 rotates, the belt 305 stretched over the pulleys 303 and 304 rotates the pulley 304 and rotates the trapezoidal screw 290 connected to the pulley 304. The trapezoidal screw 290 lowers the upper frame member 104 by moving the engaging portion 225 of the rear frame portion 220 downward. As a result, the upper frame member 104 and the platen 5 are in the states shown in FIGS. 7 to 9.
[0051] The right link member 101 and the left link member 102 contract the respective long members 120, 130 and long members 140, 150 in the vertical direction and extend them in the front-rear direction. The support shafts 113 held by the rear end portions 123, 143 of the long members 120, 140 are supported by the support holes 165, 175 at the rear end portion of the lower frame member 103. The support shafts 115 held by the rear end portions 133, 153 of the long members 130, 150 are supported by the support holes 195, 205 at the rear end portion of the upper frame member 104. On the other hand, the guide shafts 116 held by the front end portions 124, 144 of the long members 120, 140 are supported in a state of being movable in the front-rear direction in the guide holes 196, 206 at the front end portion of the upper frame member 104. The guide shafts 114 held by the front end portions 134, 154 of the long members 130, 150 are supported in a state of being movable in the front-rear direction in the guide holes 166, 176 at the front end portion of the lower frame member 103. Therefore, the right link member 101 and the left link member 102 contract in the vertical direction while maintaining the vertical positional relationship between the rear end portions 133, 153 of the long members 130, 150 and the front end portions 124, 144 of the long members 120, 140. The upper frame member 104 can be lowered without causing the inclination of the platen 5 while maintaining the positional relationship in the front-rear direction and the left-right direction with respect to the lower frame member 103.
[0052] As shown in Fig. 9, when the upper frame member 104 descends to the lowest position, the right link member 101 can bring the ends of the long members 120 and 130 closer to each other in the vertical direction compared to the case where the ends of the long members 120 and 130 are formed of members having the same width as the central portion. As described above, the long members 120 and 130 of the right link member 101 are tapered in width toward their respective ends. Therefore, when the ends of the right link member 101 approach each other in the vertical direction, the right link member 101 can reduce the limit of the closest distance caused by interference between the support shafts 113 and 115 and the guide shafts 114 and 116 and the respective ends. Since the left link member 102 has a similar configuration, the lifting device 100 can lower the upper frame member 104 to a lower position than before.
[0053] When raising the platen 5, the drive motor 300 rotates the drive shaft 302 in the direction opposite to that during lowering. The trapezoidal screw 290 rotates in the direction opposite to that during lowering, and by moving the engaging portion 225 of the rear frame portion 220 upward, the upper frame member 104 is raised. Similar to the case of lowering, the right link member 101 and the left link member 102 extend in the vertical direction while maintaining the vertical positional relationship between the rear end portions 133 and 153 of the long members 130 and 150 and the front end portions 124 and 144 of the long members 120 and 140. The upper frame member 104 can be raised without causing the inclination of the platen 5 while maintaining the positional relationship with the lower frame member 103 in the front-rear direction and the left-right direction.
[0054] As described above, the lifting device 100 does not directly apply a force to the right link member 101 and the left link member 102, but moves the upper frame member 104 and the platen 5 by the rotation of the trapezoidal screw 290. The right link member 101 and the left link member 102 expand and contract passively according to the positional relationship between the lower frame member 103 and the upper frame member 104, and support the upper frame member 104 via itself with respect to the lower frame member 103. Therefore, the lifting device 100 can reduce the load on the trapezoidal screw 290 compared to a configuration in which a force is directly applied to the right link member 101 and the left link member 102 to expand and contract them.
[0055] When the right link member 101 and the left link member 102 contract, the end portions on both sides of each of the long members 120, 130, 140, and 150 can approach each other in the vertical direction as compared with long members having the same width at the end portion and the central portion. Therefore, the lifting device 100 can make the moving distance of the platen 5 longer without changing the lengths of the long members 120, 130, 140, and 150.
[0056] The support holes 195 and 205 and the engaging portion 225 are provided on the rear side of the upper frame member 104. The support holes 195 and 205 can move in the vertical direction by the right link member 101 and the left link member 102 with respect to the support holes 165 and 175, but the movement in the left - right direction and the front - rear direction is restricted. Also, the upper frame member 104 can move in the vertical direction by the trapezoidal screw 290, but the movement in the left - right direction and the front - rear direction is restricted. Therefore, the lifting device 100 can ensure the rigidity of the upper frame member 104 on the rear side in the front - rear direction by the right link member 101 and the left link member 102 and the trapezoidal screw 290.
[0057] The support holes 195 and 205 and the linear guide 224 are provided on the rear side of the upper frame member 104. The support holes 195 and 205 can move in the vertical direction by the right link member 101 and the left link member 102 with respect to the support holes 165 and 175, but the movement in the left - right direction and the front - rear direction is restricted. Also, the upper frame member 104 can move in the vertical direction by the linear shaft 280, but the movement in the left - right direction and the front - rear direction is restricted. Therefore, the lifting device 100 can ensure the rigidity of the upper frame member 104 on the rear side in the front - rear direction by the right link member 101 and the left link member 102 and the linear shaft 280.
[0058] The lower plate member 250 and the front plate member 260 are connected by a connecting member 270, and are respectively positioned by holding both ends of the linear shaft 280, so that the rigidity of the linear shaft 280 can be ensured. Therefore, in the lifting device 100, the upper frame member 104 holds the linear shaft 280 with the linear guide 224, so that the rigidity of the upper frame member 104 on the rear side in the front-rear direction can be ensured.
[0059] The trapezoidal screw 290 is supported by a lower plate member 250 having a bearing portion 226. The lower plate member 250 is connected to the lower frame member 103. Therefore, in the lifting device 100, based on the lower frame member 103, the upper frame member 104 and the platen 5 can be moved in the vertical direction by the trapezoidal screw 290.
[0060] A drive motor 300 is provided at a position close to the trapezoidal screw 290, and by reducing the loss in the transmission of the driving force, the load applied to the drive motor 300 when the platen 5 moves can be reduced.
[0061] The lower frame member 103, the upper frame member 104, the right link member 101, and the left link member 102 are connected by the engagement of the support shafts 113, 115 and the support holes 195, 205, and the engagement of the guide shafts 114, 116 and the guide holes 166, 176. Therefore, the lifting device 100 can simplify the configuration and reduce the manufacturing cost.
[0062] The lifting device 100 can ensure rigidity in supporting the platen 5 by using an upper frame member 104 having at least a rear frame portion 220 and upper right and upper left frame portions 190, 200. Further, the lifting device 100 can reduce the weight with the upper frame member 104 as the minimum necessary framework, so that the load applied to the trapezoidal screw 290 can be reduced. Further, the lifting device 100 can accurately move the platen 5 while reducing the load applied to the trapezoidal screw 290 in the vertical movement of the platen 5 by using a trapezoidal screw 290 having a trapezoidal thread formed thereon.
[0063] The printer 1 of the present embodiment is provided with a lifting device 100 that can reduce the load on the drive motor 300 due to the overload on the platen 5 and has high rigidity, so that it has a long service life and the printing object is less likely to be displaced during the movement of the platen 5.
[0064] Even when the height of the printing surface varies depending on the printing object, the printer 1 can move the platen 5 to an appropriate height position with respect to the heads 10A and 10B by the lifting device 100 and perform printing, and the printing object is less likely to be displaced during the movement of the platen 5.
[0065] In the above embodiment, the platen 5 corresponds to the "table" of the present invention. The vertical direction corresponds to the "first direction" of the present invention. The lifting device 100 corresponds to the "moving mechanism" of the present invention. The right link member 101 corresponds to the "first link member" of the present invention. The left - right direction corresponds to the "second direction" of the present invention. The left link member 102 corresponds to the "second link member" of the present invention. The lower frame member 103 corresponds to the "first frame member" of the present invention. The upper frame member 104 corresponds to the "second frame member" of the present invention. The trapezoidal screw 290 corresponds to the "rotating member" of the present invention. The front - rear direction corresponds to the "third direction" of the present invention. The support holes 165 and 175 correspond to the "first support portion" of the present invention. The guide holes 166 and 176 correspond to the "first guiding portion" of the present invention. The support holes 195 and 205 correspond to the "second support portion" of the present invention. The guide holes 196 and 206 correspond to the "second guiding portion" of the present invention.
[0066] The linear shaft 280 corresponds to the "extension member" of the present invention. The linear guide 224 corresponds to the "guide member" of the present invention. The lower plate member 250 corresponds to the "first plate member" of the present invention. The rearward bent portion 263 corresponds to the "bent portion" of the present invention. The front plate member 260 corresponds to the "second plate member" of the present invention. The connecting member 270 corresponds to the "third plate member" of the present invention. The drive motor 300 corresponds to the "drive unit" of the present invention. The support shafts 113, 115 and the guide shafts 114, 116 correspond to the "shaft members" of the present invention. The rear frame portion 220 corresponds to the "first frame portion" of the present invention. The upper right frame portion 190 and the upper left frame portion 200 correspond to the "second frame portion" of the present invention. The irradiation devices 8A, 8B correspond to the "UV irradiation unit" of the present invention.
[0067] The present invention can be variously modified from the above embodiments. Each of the various modification examples described below can be combined as long as there is no contradiction. For example, the present invention can also be applied to a printer of a type different from the UV inkjet type as in the above embodiment.
[0068] The long members 120, 130, 140, 150 are tapered from their respective central portions toward the end portions on both sides, but may be in a shape extending with the same width between the central portion and the end portions. Also, some of the long members 120, 130, 140, 150 may be in a shape extending with the same width between the central portion and the end portions. Alternatively, the long members 120, 130, 140, 150 may be tapered from the central portion toward one end portion and extend with the same width between the central portion and the other end portion.
[0069] The support shafts 113 and 115 extend in the left - right direction and hold the rear end portions 123, 143 and 133, 153 of the elongated members 120, 140 and 130, 150 respectively, but may protrude pin - shaped from each rear end portion and be rotatably supported in each support hole 165, 175, 195, 205. Similarly, the guide shafts 114 and 116 extend in the left - right direction and hold the front end portions 134, 154 and 124, 144 of the elongated members 130, 150 and 120, 140 respectively, but may protrude pin - shaped from each front end portion and be supported so as to be movable in the front - rear direction and rotatable in each guide hole 166, 176, 196, 206. Also, instead of the guide holes, a slide rail and a slider that slide in the front - rear direction may be arranged. In this case, the front end portions 124, 134, 144, 154 and the slider may be rotatably engaged by a pin and a bearing.
[0070] The upper frame member 104 may be configured without the front frame portion 210 to achieve weight reduction. Also, an engaging portion 225 that meshes with the trapezoidal screw 290 may be arranged at the rear end portions of the upper right frame portion 190 and the upper left frame portion 200, and the configuration may be without the rear frame portion 220 to achieve further weight reduction. The platen 5 is removably assembled to the upper surface of the upper frame member 104. Not limited to this, the upper frame member 104 may be integrally formed with the platen 5 to achieve weight reduction. The lower frame member 103 may integrally form the rear cross - bridge portion 182 with the lower plate member 250 of the drive mechanism 105 to integrally configure the lower frame member 103 and the drive mechanism 105. Two trapezoidal screws 290 are arranged in the drive mechanism 105, but one may be used, or three or more may be arranged. The linear shaft 280 uses a round bar, but a rectangular or trapezoidal cross - section one may be used.
[0071] The drive mechanism 105 uses pulleys 303, 304 and a belt 305 to transmit the driving force of the drive motor 300 to the trapezoidal screw 290, but may use gears such as a rack gear and a pinion gear for transmission. Also, in the case of a configuration with one trapezoidal screw 290 arranged, the drive shaft 302 of the drive motor 300 may be connected to the trapezoidal screw 290. In this case, by omitting the configuration of the pulleys 303, 304 and the belt 305, the lifting device 100 may reduce the number of parts.
[0072] In the above embodiment, the trapezoidal screw 290 corresponded to the "rotating member" of the present invention. However, the rotating member of the present invention is not limited to the trapezoidal screw, and may be a triangular screw, a square screw, a ball screw, or the like.
Explanation of Signs
[0073] 1 Printer 5 Platen 8A, 8B Irradiation device 10A, Head 100 Lifting device 101 Right link member 102 Left link member 103 Lower frame member 104 Upper frame member 113, 115 Support shaft 114, 116 Guide shaft 120, 130, 140, 150 Long member 122, 132, 142, 152 Central part 123, 133, 143, 153 Rear end part 124, 134, 144, 154 Front end part 165, 175, 195, 205 Support hole 166, 176, 196, 206 Guide hole 190 Upper right frame part 200 Upper left frame part 220 Rear frame part 224 Linear guide 225 Engagement part 226 Bearing part 250 Lower plate member 260 Front plate member 263 Rearward bent part 270 Connecting member 280 Linear shaft 290 Trapezoidal screw 300 Drive motor
Claims
1. A moving mechanism capable of moving a table in a first direction, comprising: A first link member in which two long members are X-shapedly connected to be rotatable relative to each other and is stretchable in the first direction; A second link member in which two long members are X-shapedly connected to be rotatable relative to each other, is stretchable in the first direction, and is disposed opposite to the first link member in a second direction intersecting the first direction; A first frame member disposed at one end side of the first link member and the second link member on one side in the first direction, for supporting the first link member and the second link member respectively; A second frame member disposed at the other end side of the first link member and the second link member on the other side in the first direction, and having the table disposed on the other side in the first direction; A rod-shaped member with a thread formed thereon, engaging with an engaging portion provided on the second frame member, and by rotating, a rotating member for moving the second frame member and the table in the first direction; and and An extension member extending in the first direction; A guiding member provided on one side in a third direction intersecting the first direction and the second direction of the second frame member, for guiding relative movement of the extension member in the first direction while holding the extension member; and further A first plate member connected to the first frame member on one side in the third direction of the first frame member, being plate-shaped and extending in the second direction and the third direction, and holding one end portion of the extension member on one side in the first direction; A second plate member connected to the second frame member on one side in the third direction of the second frame member, being plate-shaped and extending in the first direction and the second direction, and having a bent portion where a part on the other side in the first direction is bent to the one side in the third direction, and holding the other end portion of the extension member on the other side in the first direction at the bent portion; It is a bent plate shape, and a third plate member that connects the first plate member and the second plate member and includes The first frame member is provided on one side in the third direction, and has a first support portion that rotatably supports one end of one long member of the first link member and one end of one long member of the second link member respectively; is provided on the other side in the third direction, and has a first guiding portion that guides one end of the other long member of the first link member and one end of the other long member of the second link member respectively to be movable in the third direction; and has The second frame member is provided on one side in the third direction, and has a second support portion that rotatably supports the other end of the other long member of the first link member and the other end of the other long member of the second link member respectively; is provided on the other side in the third direction, and has a second guiding portion that guides the other end of the one long member of the first link member and the other end of the one long member of the second link member respectively to be movable in the third direction and has A moving mechanism characterized by this.
2. The long members respectively included in the first link member and the second link member are each tapered in the width direction from the central portion in the extending direction toward both end portions, according to the moving mechanism described in Claim 1.
3. The engaging portion is provided on one side of the second frame member in the third direction, according to the moving mechanism described in Claim 1 or 2.
4. The first plate member has a bearing portion that rotatably supports the rotating member, according to the moving mechanism described in any one of Claims 1 to 3.
5. The moving mechanism according to any one of claims 1 to 4, further comprising a driving unit provided on the first plate member for applying a driving force to the rotating member to rotate the rotating member.
6. An axially-shaped shaft member extending in the second direction is provided at an end of the elongated member, the first support portion of the first frame member and the second support portion of the second frame member are round holes engaging with the shaft member, the first guiding portion of the first frame member and the second guiding portion of the second frame member are elongated holes engaging with the shaft member, which is the moving mechanism according to any one of claims 1 to 5.
7. The second frame member, has a first frame portion extending in the second direction and provided with the engaging portion engaging with the rotating member, and a pair of second frame portions extending from both ends of the first frame portion in the second direction toward the other side in the third direction and having the second support portion and the second guiding portion, and at least has these. which is the moving mechanism according to any one of claims 1 to 6.
8. The rotating member is a trapezoidal screw formed with the trapezoidal thread, which is the moving mechanism according to any one of claims 1 to 7.
9. The moving mechanism according to any one of claims 1 to 8, and a head for discharging ink toward a printing object disposed on the table of the moving mechanism. which is a printing apparatus characterized by comprising these.
10. The ink is UV ink cured by ultraviolet rays, and the printing apparatus according to claim 9, further comprising a UV irradiation unit provided integrally with the head for irradiating ultraviolet rays toward the printing object.
Citation Information
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