JP2017154442A - Adsorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose an adsorber of not requiring to block up a suction hole unblocked by a medium by an end material, when sucking the medium.SOLUTION: An adsorber for adsorbing a medium to an adsorption plate by generating suction force in a plurality of suction holes formed in the adsorption plate for placing the medium, comprises an opening part movably arranged to the adsorption plate and correspondingly formed in the suction hole in respectively different dimensions, and comprises a suction control plate for generating suction force in the suction hole when the suction hole is positioned in the opening part and not generating the suction force in the suction hole when the suction hole is not positioned in the opening part and control means for controlling the number of suction holes positioned in the opening part in the suction control plate by moving the suction control plate.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an adsorption device, and more particularly, to an adsorption device that adsorbs a medium to an adsorption plate in a flat bed type machining apparatus that performs predetermined processing on a medium.

  2. Description of the Related Art Conventionally, for example, a flat bed type ink jet printer as disclosed in Japanese Patent Laid-Open No. 2014-83741 presented as Patent Document 1 is known.

  In such an ink jet printer, the flat bed on which the medium is placed is configured as a suction device that sucks the medium.

  Specifically, the suction device as a flat bed includes a suction plate on which a medium is placed and a plurality of suction holes are formed, and a base member that supports the suction plate and is connected to a suction pump. It is configured.

  By the way, in such a suction device, the diameter of the plurality of suction holes formed in the suction plate is constant, and a uniform suction force is generated in each suction hole by a suction pump.

  For this reason, if all the suction holes provided in the suction plate are not blocked by the media placed on the suction plate, the suction force in the suction holes blocked by the media is blocked by the media. The suction force is deprived by the suction holes that are not removed.

  Therefore, when there is a suction hole that is not blocked by the media when the medium is placed on the suction plate, the suction hole must be closed by using a scrap material. It has been pointed out as a problem that it is a burden on the workers.

  Also, since each suction hole has a uniform suction force, when sucking easily deformable media such as paper on the suction plate, the operator must work to prevent the media from wrinkling. In addition, it was pointed out as a problem that such work would be a burden on the worker.

Japanese Patent Application Laid-Open No. 2014-83741

  The present invention has been made in view of the various problems of the prior art as described above, and the object of the present invention is to use suction holes that are not blocked by the media when suctioning the media. This is an attempt to propose an adsorption device that does not need to be closed with.

  Another object of the present invention is to propose a suction device that is unlikely to cause wrinkles on the medium when the medium is sucked.

  In order to achieve the above object, the present invention provides a suction device for generating a suction force in a plurality of suction holes formed in a suction plate on which a medium is placed, and suctioning the medium to the suction plate. The suction plate is movably disposed and has openings each having a different size and corresponding to the suction hole. When the suction hole is located in the opening, the suction hole is sucked into the suction hole. A suction control plate that prevents suction force from being generated in the suction hole when the suction hole is not located in the opening, and the suction control plate is moved to move the suction control plate into the opening in the suction control plate. And a control means for controlling the number of the suction holes located at the center.

  In the first aspect of the present invention, the control means is configured such that the suction holes are not located in all the openings of the suction control plate and no suction force is generated in all the suction holes. Therefore, the suction holes are located in all the openings of the suction control plate, and the suction holes that generate suction force are present when shifting to the second state in which suction force is generated in all the suction holes. The suction area as an area is shifted while expanding in a predetermined direction.

  In the invention described above, the opening is formed in a substantially pentagonal shape in which one corner of a rectangular shape is cut out and a corner portion is rounded into an arc shape.

  In the invention described above, the openings are arranged in a matrix along the first direction and the second direction orthogonal to the first direction.

  According to the present invention, in the above-described invention, the openings arranged along the first direction have the same distance between the first sides on one side of the adjacent openings in the first direction. In the opening located on the other side in the first direction, the third side on one side in the second direction is longer by a predetermined amount, and the other side in the first side and the second direction. The length of the fourth side and the inclination angle of the fifth side formed by cutting are not changed, and the second side on the other side in the first direction is shortened by the predetermined amount. The spacing between the second sides of the matching openings coincides with the spacing between the suction holes arranged in parallel along the first direction, and the corners of the openings are Rounded with an arc having a radius matching the radius of the suction hole, and along the second direction. In the openings arranged side by side, the intervals between the third sides of the adjacent openings coincide with each other, and the opening located on the other side in the second direction has the first side having the predetermined amount. The length of the third side and the second side and the inclination angle of the fifth side are not changed, the fourth side is shortened by the predetermined amount, and the adjacent openings The spacing between the fourth sides coincides, the spacing coincides with the spacing between the suction holes arranged side by side along the second direction, and the corner portion of the opening portion corresponds to the suction hole. It is rounded off with an arc having a radius that matches the radius.

  Since the present invention is configured as described above, when the medium is sucked, there is an excellent effect that it is not necessary to block the suction hole not covered by the medium with the end material.

  In addition, since the present invention is configured as described above, it has an excellent effect that it is difficult to cause wrinkles in the media when the media is sucked.

FIG. 1 is a schematic configuration perspective view of an inkjet printer provided with a suction device according to the present invention. FIGS. 2A, 2B, and 2C are schematic configuration perspective views of main components of the adsorption device. FIG. 3 is a view taken in the direction of arrow A in FIG. FIG. 4A is an explanatory view showing the suction holes formed in the suction plate, and FIG. 4B is an explanatory view showing the openings formed in the suction control plate. FIG. 5 is an explanatory diagram showing an example of the size of the opening formed in the suction control plate. FIG. 6 is an explanatory diagram of a block configuration showing a functional configuration of the microcomputer. 7A, 7B, 7C, and 7D are explanatory views for explaining the positions of the suction holes that generate the suction force based on the size of the medium. 8A, 8B, and 8C are explanatory views for explaining the positions of the suction holes that generate the suction force based on the size of the medium. FIGS. 9A, 9B, 9C, and 9D are explanatory views for explaining the expansion of the suction area when sucking a wrinkle-prone medium. FIG. 10 is an explanatory view showing the arrangement position of the opening with respect to the suction hole.

Hereinafter, an example of an embodiment of an adsorption device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a schematic configuration of an ink jet printer provided with a suction device according to the present invention.

  The ink jet printer 10 shown in FIG. 1 includes a suction device 12 as a flat bed that sucks the placed media on the XY plane in the XYZ orthogonal coordinate system.

  That is, in the suction device 12, the upper surface 12a on which the medium is placed is formed in parallel with the XY plane.

  The suction device 12 includes a suction plate 18 in which a plurality of suction holes 26 are formed, a base member 22 that supports the suction plate 18 and to which a suction pump 20 is connected, and a suction plate disposed in the base member 22. And a suction control unit 24 that controls the suction force of the suction hole 26 by closing the suction holes 26 formed in the reference numeral 18 (see FIGS. 2A, 2B, and 2C). ).

  The ink jet pudding 10 includes a printing unit 14 that is arranged to be movable in the Y-axis direction.

  The printing unit 14 is provided with an inkjet head (not shown) that is disposed above the suction device 12 so as to be movable in the X-axis direction.

  Note that the overall operation of the inkjet printer 10 is controlled by the microcomputer 16, and in the microcomputer 16, the size of the media on the suction device 12 and the characteristics of the media (for example, characteristics relating to the likelihood of wrinkles). Based on the above, a process for controlling the suction in the suction hole 26 through the suction control unit 24 is performed.

  Here, the inkjet printer 10 is different from the conventional technique only in that the suction device 12 includes the suction control unit 24 and only the process of controlling the suction in the suction hole 26 via the suction control unit 24 is performed. Conventionally known techniques can be applied to other configurations and control methods.

Therefore, in the following description, it is possible to apply a conventionally known technique as a description of only the suction device 12 including the suction control unit 24 and the process for controlling the suction of the suction hole 26 via the suction control unit 24. Detailed description regarding other configurations and control will be omitted.

The suction plate 18 in the suction device 12 is provided with a plurality of suction holes 26 penetrating from the front surface 18a to the back surface 18b. For example, as shown in FIG. 4A, along the X-axis direction and the Y-axis direction. A total of nine suction holes 26 are formed in the suction plate 18 in a matrix of 3 rows and 3 columns. At this time, the intervals between the suction holes 26 arranged in parallel along the X-axis direction and the Y-axis direction are all designed to coincide.

  The base member 22 in the suction device 12 is formed in a hollow, substantially box-like shape with an open upper surface, and a suction plate 18 is detachably disposed so as to cover the opened upper surface portion to form a space inside ( Reference is made to FIG. Note that the space formed in the base member 22 by mounting the suction plate 18 communicates with the external space only by a suction hole 26 provided in the suction plate 18 and a through hole 22b (described later) of the base member 22. It becomes like this.

  A through hole 22b is formed in the bottom surface 22a of the base member 22, and the suction pump 20 is connected to the through hole 22b via a tube (not shown).

  On the side wall 22c erected at the rear end portion of the bottom surface 22a of the base member 22, a shaft 30 having one end portion connected to the drive member 28 is disposed extending in the Y-axis direction. A screw thread is formed on the outer peripheral surface. The shaft 30 rotates around the Y axis by driving of the driving means 22.

  Further, a pair of holes (not shown) for fixing one end of a pair of rails 38 (described later) are formed in the wall surface 22ca of the side wall 22c.

A pair of holes 32 for fixing the other end of a pair of rails 38 (described later) to the wall surface 22da is formed on the side wall 22d erected at the front end portion of the bottom surface 22a of the base member 22.

  The suction control unit 24 in the suction device 12 includes a plate member 34 that is movably disposed in the Y-axis direction in the base member 22, and a suction control that is movably disposed in the X-axis direction on the upper surface 34 a of the plate member 34. And a plate 36 (see FIG. 2B).

  When the suction control unit 24 is disposed on the base member 22 and the suction plate 18 is attached to the base member 22, the back surface 18b of the suction plate 18 and the upper surface 36a of the suction control plate 36 are in contact with each other, In this state, the suction control plate 36 is designed to be movable.

  The plate member 34 has a hole 40 formed in the rear end surface 34 b, and a screw groove that can be screwed into a thread formed on the shaft 30 is formed on the inner peripheral surface of the hole 40.

  The plate member 34 is slidably disposed on a pair of rails 38, and the pair of rails 38 has a pair of hole portions (one end portion formed in the wall surface 22 ca of the side wall 22 c of the base member 22 ( The other end portion is fixed to a pair of hole portions 32 formed on the wall surface 22da of the side wall 22d of the base member 22.

  At this time, the pair of rails 38 are disposed so as to extend in the Y-axis direction.

  At this time, the other end side of the shaft 30 is inserted into the hole 40 of the plate member 34.

  Therefore, the plate member 34 is configured to be movable in the Y-axis direction along the pair of rails 38 in the base member 22 by the shaft 30 that rotates by driving of the drive member 22.

The width W1 of the plate member 34 (that is, the length in the X-axis direction in FIG. 2B) is a value smaller than the length L2 between the side walls 22e and 22f of the base member 22, The length L1 of the plate member 34 (that is, the length in the Y-axis direction in FIG. 2B) is a value smaller than the length L3 between the side walls 22c and 22d in the base member 22.

  The suction control plate 36 is slidably disposed on a pair of rails 42 fixedly disposed on the upper surface 34 a of the plate member 34. At this time, a gap G is provided between the suction control plate 36 and the plate member 34 (see FIG. 3).

  The pair of rails 42 are extended in a direction orthogonal to the pair of rails 38 in the plate member 34. That is, when the pair of rails 38 extends in the Y-axis direction, the pair of rails 42 extends in the X-axis direction.

  The suction control plate 36 has a hole 44 formed in the side surface 36 b, and a screw groove is formed on the inner peripheral surface of the hole 44.

  The plate member 34 is provided with a drive member 46, and a shaft 48 having one end connected to the drive member 46 is aligned with the extending direction of the pair of rails 42. It is extended to.

  The shaft 48 is rotated around the axis in the extending direction by driving of the driving member 46. That is, when the pair of rails 42 extend in the X-axis direction, the shaft 48 rotates around the X-axis.

  A thread that can be screwed into a thread groove formed on the inner peripheral surface of the hole 44 is formed on the outer peripheral surface of the shaft 48.

  The other end side of the shaft 48 is inserted into the hole 44 of the suction control plate 36.

  Therefore, the suction control plate 36 is configured to be able to move along the pair of rails 42 on the plate member 34 by the shaft 48 that rotates by driving of the drive member 46.

  That is, when the pair of rails 38 in the plate member 34 are disposed extending in the Y-axis direction in the base member 22, the suction control plate 36 can be moved in the Y-axis direction via the plate member 34, The plate member 34 can be moved in the X-axis direction.

  Note that the thickness t (see FIG. 3) of the suction control unit 24 constituted by the suction control plate 36 and the plate member 34 is the same as that of the base member 22 when the suction plate 18 is attached to the base member 22. The value is smaller than the length from the bottom surface 22 a to the back surface of the suction plate 18.

Therefore, when the suction plate 18 is attached to the base member 22 provided with the suction control unit 24, the suction control plate 36 is in a state where the surface 36 a of the suction control plate 36 is in contact with the back surface 18 b of the suction plate 18. Is configured to be movable in the X-axis direction and the Y-axis direction.

  Further, the suction control plate 36 has openings 50 corresponding to the plurality of suction holes 26 formed in the suction plate 18. That is, the suction hole 26 and the opening 50 have a one-to-one relationship based on the arrangement position.

  Specifically, the suction control plate 36 is arranged in a matrix of 3 rows and 3 columns along the X-axis direction and the Y-axis direction so as to correspond to the nine suction holes 26 shown in FIG. A total of nine openings 50 are formed.

  That is, the suction control plate 36 has suction holes 26-1, 26-2, 26-3, 26-4, 26-5, 26-6, 26-7, 26-8, as shown in FIG. Openings 50-1, 50-2, 50-3, 50-4, 50-5, 50-6, 50-7, 50-8, 50-9 are provided to correspond to 26-9, respectively. It has been.

  When the suction control plate 36 moves while the suction pump 20 is driven in the suction control unit 24 disposed in the base member 22 to which the suction plate 18 is mounted, the suction control plate 36 is sucked into the opening 50 of the suction control plate 36. When the suction hole 26 of the plate 18 is positioned, the suction hole 26 sucks air from the external space, and a suction force is generated in the suction hole 26. Further, when the suction hole 26 of the suction plate 18 is not located in the opening 50 of the suction control plate 36, the suction hole 26 cannot suck air from the external space, and suction force is not generated in the suction hole 26.

Since the openings 50 are opened in different shapes, the number of suction holes 26 that generate suction force can be changed according to the moving direction and moving amount of the suction control plate 36.

  Here, the shape of the opening 50 formed corresponding to the nine suction holes 26 shown in FIG.

  The opening 50 is formed in a substantially pentagonal shape in which a rectangular left front corner is notched, and each corner portion is rounded into an arc shape.

  In addition, each opening part 50 is each formed in a different dimension, and let the opening part 50-1 located in the backmost side among the opening parts located in a line with a Y-axis direction on the rightmost side be a reference | standard opening part.

  Specifically, first, in the opening 50-1 serving as the reference opening, a substantially pentagonal shape is formed by cutting out the square front part on the left side of the square, and the hypotenuse 50a formed by the notch is a front side. It tilts 45 ° from 50b and reaches the left side 50c.

  At this time, the cutout area, which is the cutout area, has a size that can be accommodated by the suction hole 26, and the cutout area in the opening 50-1 serving as the reference opening is the smallest compared to the cutout areas in all the openings. (See FIG. 10).

  Further, the openings 50 arranged along the X-axis direction are formed so as to satisfy the following conditions.

-The space | interval between the right sides 50d of the adjacent opening part 50 corresponds.
-In the opening 50 located on the left side, the rear side 50e is longer by a predetermined amount, the length of the right side 50d and the front side 50b and the inclination angle of the hypotenuse 50a are not changed, and the left side 50c is shortened by a predetermined amount. .
The interval between the left sides 50c of the adjacent openings coincides, and this interval coincides with the interval between the suction holes 26 aligned along the X-axis direction.
The corner portion of the opening 50 is rounded with an arc having a radius that matches the radius of the suction hole 26.

Furthermore, the openings 50 arranged along the Y-axis direction are formed so as to satisfy the following conditions.
-The space | interval between the rear sides 50e of the adjacent opening part 50 corresponds.
In the opening 50 located on the front side, the right side 50d is longer by a predetermined amount, the length of the rear side 50e and the left side 50c and the inclination angle of the hypotenuse 50a are not changed, and the front side 50b is shortened by the predetermined amount.
The interval between the front sides 50b of the adjacent openings is the same, and this interval is the same as the interval between the suction holes 26 arranged along the Y-axis direction.
The corner portion of the opening 50 is rounded with an arc having a radius that matches the radius of the suction hole 26.

  In the suction control plate 36, the opening 50 is formed in the suction hole 26 as shown in FIG.

That is, when the suction hole 26-1 is located at a corner in the cutout region of the reference opening 50-1, each opening 50 (that is, the openings 50-2, 50-3, 50-4, 50-5). , 50-6, 50-7, 50-8, 50-9) are suction holes 26 (that is, suction holes 26-2, 26-3, 26-4, 26-5, 26-6, 26-7, 26-8, and 26-9) are formed so as to be located at corners in the cutout region.

An example of each dimension of the opening 50 formed in the suction control plate 36 so as to satisfy the above-described conditions is shown in FIG. At this time, the interval between the suction holes 26 arranged in parallel along the X-axis direction and the Y-axis direction was 200 mm.

  When the suction control plate 36 moves in the suction controller 24, only the corresponding suction hole 26 moves so as to be positioned in the opening 50.

That is, only the suction hole 26-1 can be located in the opening 50-1, and only the suction hole 26-2 can be located in the opening 50-2. Only the suction hole 26-3 can be located, only the suction hole 26-4 can be located in the opening 50-4, and only the suction hole 26-4 is located in the opening 50-5. In the opening 50-6, only the suction hole 26-6 can be positioned. In the opening 50-7, only the suction hole 26-7 can be positioned. Only the suction hole 26-8 can be positioned, and only the suction hole 26-9 can be positioned in the opening 50-9.

  The microcomputer 16 controls to perform predetermined printing on the medium based on the print data, and controls the suction of the suction holes 26 based on the size and characteristics of the medium.

  Here, FIG. 6 is a block configuration explanatory diagram showing a functional configuration of the microcomputer 16.

The microcomputer 16 operates the printing unit 14 based on the input print data and the like, and a print control unit 52 that performs predetermined printing on the medium, and a storage unit 54 that stores various information such as print data. And a suction device controller 56 for controlling the suction of the media in the suction device 12 based on the information about the media.

The suction device control unit 56 includes a suction region changing unit 58 that changes a suction region, which is a region where the suction holes 26 that can be sucked exist, based on the size of the medium, and the characteristics of the media, specifically, the occurrence of wrinkles. Based on easiness, it has the suction area expansion part 60 which expands a suction area gradually.

  The suction area changing unit 58 controls the driving of the driving members 28 and 46 based on the size of the medium to move the suction control plate 36, and is an area where the suction holes 26 where the suction force is generated, that is, the suction area. To change.

  Specifically, when the medium is large enough to use all the suction holes 26, the suction holes 26 of the suction plate 18 are positioned in all the openings 50 of the suction control plate 36. The suction control plate 36 is moved (see FIG. 7A).

  In addition, when the medium has a size that can be sufficiently adsorbed by using one suction hole 26, the opening located on the foremost side of the openings 50 arranged in the Y-axis direction on the leftmost side The suction control plate 36 is moved so that the suction hole 26 is positioned only within 50 (that is, the opening 50-9) (see FIG. 7B).

  Further, in the case where the medium can be sucked by using three suction holes 26 arranged along the X-axis direction or the Y-axis direction, the three openings 50 ( In other words, the suction control plate 36 is moved so that the suction hole 26 is positioned only in the openings 50-3, 50-6, and 50-9 (see FIG. 7C). Alternatively, suction control is performed so that the suction hole 26 is positioned only in the three openings 50 (that is, the openings 50-7, 50-8, and 50-9) arranged in the Y-axis direction on the leftmost side. The plate 36 is moved (see FIG. 7D).

  Furthermore, in the case where the medium can be sucked by using two suction holes 26 arranged in the X-axis direction or the Y-axis direction, the three openings 50 arranged in the X-axis direction on the foremost side. The suction control plate 36 is moved so that the suction hole 26 is located only in the two openings 50 (that is, the openings 50-6 and 50-9) located on the left side of the 8 (a), or two openings 50 located on the front side of the three openings 50 arranged in the Y-axis direction on the leftmost side (that is, openings 50-8, 50-9.) The suction control plate 36 is moved so that the suction hole 26 is located only in the inside (see FIG. 8B).

  In addition, when the media can be sucked by using a total of four suction holes 26 arranged in the X-axis direction and the Y-axis direction, three openings arranged in the Y-axis direction on the leftmost side. Within the two openings 50 (that is, the openings 50-8 and 50-9) located on the front side of the portion 50, and the front of the three openings 50 arranged in the center in the Y-axis direction. The suction control plate 36 is moved so that the suction hole 26 is located only in the two openings 50 located on the side (that is, the openings 50-5 and 50-6) (FIG. 8B). To see.)

As for the size of the media, for example, the operator inputs the vertical and horizontal dimensions of the media.

  The suction area expansion unit 60 controls the driving of the drive members 28 and 46 to move the suction control plate 36, and gradually expands the area where the suction holes 26 where the suction force is generated in a predetermined direction. Gradually enlarge the suction area.

  Specifically, when suction is performed on media having a size that requires the use of all the suction holes 26 so as not to cause wrinkles, first, the suction control plate 36 is set to all the openings 50. In FIG. 9, the suction holes 26 are not located inside (that is, all the suction holes 26 are closed and no suction force is generated) and move to the initial position (see FIG. 9A).

  In addition, about this initial position, let each suction hole 26 be a position arrange | positioned in the notch area | region (refer FIG. 10) in each corresponding opening part 50. FIG.

  Thereafter, by moving in a direction orthogonal to the oblique side 50a of the opening 50, first, the suction hole 26 is located only in the reference opening 50-1, and then the left side of the reference opening 50-1 and The suction hole 26 is also located in the opening 50 adjacent to the front side (that is, the openings 50-2 and 50-4) (see FIG. 9B).

  That is, it expands from a state where there is no suction region to a suction region of only the opening 50-1, and further expands to a suction region constituted by the openings 50-1, 50-2 and 50-4.

  Furthermore, by moving in a direction perpendicular to the oblique side 50a of the opening 50, the suction holes 26 located in the opening 50 are increased (see FIG. 9C), and finally all the suction holes are made. 26 is located in the opening 50 (see FIG. 9D), and the medium is sucked by all the suction holes 26.

Accordingly, in the suction area expanding section 60, the suction control plate 36 is moved in a predetermined direction from the state where the suction hole 26 is not located in the opening 50, so that the suction is gradually performed from the corner or end of the medium. The area is expanded so that the medium is adsorbed to the adsorption plate 18.

  In the above configuration, when a medium having a predetermined size is adsorbed to the adsorption device 12, the medium is placed on the adsorption plate 18 by an operator, and an operator (not shown) is operated to operate the medium. When an instruction to suck a medium of a predetermined size is given, the suction area changing unit 58 first generates the suction hole 26 that generates a suction force based on the input medium size. To decide.

  The position where the medium is placed on the suction plate 18 is determined in advance based on the size of the input medium, for example.

Next, the suction region changing unit 58 drives the drive members 28 and 46 to move the suction control plate 36 to a position where the determined suction hole 26 is located in the opening 50, and then drives the suction pump 20. Then, suction from the suction hole 26 is performed, and a medium having a predetermined size is sucked to the suction plate 18.

  Further, when a wrinkle-prone medium is sucked by the suction device 12, the medium is placed on the suction plate 18 by an operator and an operator (not shown) is operated to prevent wrinkles. Is instructed, the suction area expansion unit 60 drives the drive members 28 and 46 to move the suction control plate 36 to the initial position.

Thereafter, the suction pump 20 is driven, and the drive members 28 and 26 are driven to move the suction control plate 36 in a predetermined direction at a predetermined speed, whereby the suction region is gradually moved from the corner or end of the medium. While being expanded, the medium that tends to cause wrinkles is adsorbed to the adsorption plate 18.

  As described above, the inkjet printer 10 equipped with the suction device 12 according to the present invention has the suction control in which the plurality of openings 50 corresponding to the plurality of suction holes 26 provided in the suction plate 18 are formed. The plate 36 is disposed so as to be movable in contact with the back surface 18 b of the suction plate 18.

  Then, by moving the suction control plate 36 based on the size of the medium placed on the surface 18 a of the suction plate 18, the suction hole 26 is located in the opening 50 to generate suction force. The number was controlled.

  Thereby, in the inkjet printer 10 equipped with the suction device 12 according to the present invention, all the suction holes 26 other than the suction holes 26 located in the area where the medium is placed are closed by the suction control plate 36 and sucked. Power will not be generated.

For this reason, according to the ink jet printer 10 equipped with the suction device 12 according to the present invention, when sucking the medium to the suction device 12, the suction holes 26 located outside the region where the medium is placed are used as the end material. This eliminates the need to close the door and reduces the burden on the worker during work.

  In addition, the inkjet printer 10 including the suction device 12 according to the present invention moves the suction control plate 36 in a predetermined direction at a predetermined speed to a wrinkle-prone medium, thereby generating a suction hole 26 that generates a suction force. The area where is located has been expanded.

  Thereby, in the inkjet printer 10 provided with the suction device 12 according to the present invention, the suction area can be gradually expanded from the corner or end side of the medium.

For this reason, according to the ink jet printer 10 equipped with the suction device 12 according to the present invention, it becomes difficult for the wrinkle to be generated when adsorbing the wrinkle-prone medium, and the operator can omit the work that does not cause the wrinkle to the medium. This reduces the burden on the worker during work.

  The embodiment described above may be modified as shown in the following (1) to (10).

  (1) In the above-described embodiment, the suction region changing unit 58 moves the suction control plate 36 based on the size of the media to change the region where the suction holes 26 that generate suction force are present. However, the present invention is not limited to this, and the operator selects the suction hole 26 that generates the suction force, and the suction region changing unit 58 is based on the suction hole 26 selected by the operator. The suction control plate 36 may be moved by controlling the driving of the driving members 28 and 46.

  (2) In the above-described embodiment, the operator inputs the size of the medium. However, the present invention is not limited to this, and the suction device 12 detects the size of the medium. A sensor may be provided, and the size of the medium may be acquired from the detection result of the sensor.

  (3) In the above-described embodiment, the operator places the medium at a predetermined position on the suction plate 18 when the predetermined size of the medium is sucked by the suction device 12. Of course, the present invention is not limited to this. For example, the position of the suction hole 26 determined based on the input medium size should be displayed on the display device, and the medium should be placed on the operator. The position may be indicated.

  (4) In the above embodiment, in the ink jet printer 10, the medium is placed and the suction device 12 is used as a flat bed for sucking the placed medium. However, the present invention is not limited to this. Needless to say, the suction device 12 may be used as a flat bed in a cutting plotter that performs cutting on a medium or a plotter that performs cutting on a medium.

  (5) In the above-described embodiment, nine suction holes 26 are formed in the suction plate 18, and nine openings 50 are provided in the suction control plate 36 so as to correspond to the suction holes 26. Of course, this is not a limitation.

  That is, the number of suction holes 26 formed in the suction plate 18 may be 2 to 8, or 10 or more. In this case, the suction control plate 36 has suction positions at positions corresponding to the suction holes 26. The same number of openings 50 as the holes 26 are formed.

  (6) In the above-described embodiment, when a wrinkle-prone medium is adsorbed to the adsorbing device 12, the suction area expanding unit 60 is driven by the drive member 28 based on an instruction to adsorb the medium so that the wrinkle does not occur. , 46 is controlled, but the present invention is not limited to this.

  That is, the operator inputs the type of media, and the suction area expansion unit 60 may determine whether or not to attract the media based on the input type of media so as not to cause wrinkles. .

  At this time, when the suction area expanding unit 60 determines that the medium should be sucked so as not to cause wrinkles, the suction control plate 36 is moved to the initial position, and then the suction pump 20 is driven to perform suction control. The plate 36 is controlled to move in a predetermined direction at a predetermined speed. If it is determined that it is not necessary to suck the media so as not to cause wrinkles, the suction control plate 36 is moved so that all the suction holes 26 are located in the openings 50, and then the suction pump 20 is driven. Control as follows.

  (7) In the above-described embodiment, the suction control plate 36 is disposed on the upper surface 34a of the plate member 34 movable in the Y-axis direction in the base member 22 so as to be movable in the X-axis direction. Of course, the suction control plate 36 is not limited to the above, and if the suction control plate 36 can move in the X-axis direction and the Y-axis direction while the upper surface 36a is in contact with the back surface 18b of the suction plate 18 inside the base member 22, the suction control is performed. The moving mechanism of the plate 36 may have any configuration.

  (8) Although not particularly described in the above-described embodiment, the suction holes 26 are arranged along the X-axis direction and the Y-axis direction at positions where the suction holes 26 and the openings 50 are formed in the suction device 12. The matrix is arranged in a matrix of 3 rows and 3 columns, and the openings 50 are arranged in a matrix of 3 rows and 3 columns along the X-axis direction and the Y-axis direction so as to correspond to the suction holes 26. However, the position is not limited to the above as long as the same function can be realized.

  (9) Although not particularly described in the above-described embodiment, the shape of the opening 50 is formed in a substantially pentagonal shape with a corner on the left side of the rectangular shape cut out, and each corner portion is a circle. Although it was made to be rounded in the shape of an arc, the shape is not limited to the above as long as a similar function can be realized.

  (10) You may make it combine suitably the embodiment shown above and the modification shown in said (1) and (9).

  The present invention is suitable for use as an adsorption device in a flatbed type processing apparatus that performs predetermined processing on media.

  DESCRIPTION OF SYMBOLS 10 Inkjet printer, 12 Suction device, 14 Printing unit, 16 Microcomputer, 18 Suction plate, 20 Suction pump, 22 Base member, 24 Suction control part, 26 Suction hole, 28, 46 Drive member, 30, 48 Shaft, 32, 40, 44 Hole, 34 Plate member, 36 Suction control plate, 38, 42 Pair of rails, 50 Opening, 52 Print control unit, 54 Storage unit, 56 Suction device control unit, 58 Suction area changing unit, 60 Suction area Extension

Claims (5)

In a suction device that suctions the media to the suction plate by generating suction force in a plurality of suction holes formed in the suction plate on which the medium is placed,
The suction hole is movably disposed with respect to the suction plate, and has an opening formed corresponding to the suction hole with a different size. When the suction hole is located in the opening, the suction hole A suction control plate that prevents suction force from being generated in the suction hole when suction force is generated and the suction hole is not located in the opening;
And a control unit that moves the suction control plate to control the number of the suction holes located in the opening of the suction control plate. The adsorption device according to claim 1,
The control means is configured such that the suction holes are not located in all the openings of the suction control plate, and no suction force is generated in all the suction holes. The suction area, which is the area where the suction holes where the suction force is generated, is expanded in a predetermined direction when shifting to the second state where the suction holes are located in the part and suction force is generated in all the suction holes. Adsorption device characterized by shifting while moving. In the adsorption | suction apparatus of any one of Claim 1 or 2,
The opening is formed in a substantially pentagonal shape in which one corner of a rectangular shape is cut out and a corner portion is rounded into an arc shape. The adsorption device according to claim 3,
The adsorbing device, wherein the openings are arranged in a matrix along a first direction and a second direction orthogonal to the first direction. The adsorption device according to claim 4,
The openings arranged along the first direction are:
The interval between the first sides on one side in the first direction of the adjacent openings coincides,
In the opening located on the other side in the first direction, the third side on one side in the second direction is longer by a predetermined amount, and on the other side in the first side and the second direction. The length of the fourth side and the inclination angle of the fifth side formed by cutting are not changed, and the second side on the other side in the first direction is shortened by the predetermined amount,
The spacing between the second sides of the adjacent openings coincides with the spacing between the suction holes arranged in parallel along the first direction,
The corner of the opening is rounded with an arc of a radius that matches the radius of the suction hole,
The openings arranged along the second direction are
The spacing between the third sides of the adjacent openings coincides;
In the opening located on the other side in the second direction, the first side is longer by the predetermined amount, the length of the third side and the second side, and the inclination of the fifth side The angle does not change, the fourth side is shortened by the predetermined amount,
The distance between the fourth sides of the adjacent openings coincides with the distance between the suction holes arranged in parallel along the second direction,
The corner of the opening is rounded with an arc having a radius that matches the radius of the suction hole.