Table moving mechanism

Abstract

To provide a table moving mechanism having a table with high flatness.SOLUTION: A table moving mechanism (30) comprises a guide rod (27), a support member (60), and a connection member (70) for connecting the guide rod (27) and the support member (60). The connection member (70) is formed by bending a plate-like member made of a metal. A rod attachment part (72) has a rod hole (74) for inserting the guide rod (27), and a projection (77) projecting toward the support member (60). The projection (77) has a support surface (78) capable of supporting the support member (60) together with a fixing part (71). An edge (78a) of the support surface (78) and an edge (74a) of the rod hole (74) are located on the same plane.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a table moving mechanism equipped with a table with high flatness. [Background technology]

[0002] A printer is equipped with a table on which a recording medium such as paper can be placed, and an ink head that prints by ejecting ink toward the recording medium placed on the table. The table is required to have a certain flatness so that the distance between the ink head and the table is constant. Patent Document 1 discloses a printer equipped with an adjustment mechanism for adjusting the flatness of the table.

[0003] The printer disclosed in Patent Document 1 includes a support base that supports a table, and a height adjustment mechanism that can adjust the distance between the support base and the table. The height adjustment mechanism has a female screw formed in the table, and a cylindrical height adjustment screw that has a male screw that can mesh with the female screw.

[0004] By rotating the height adjustment screw, the amount by which the height adjustment screw protrudes from the table toward the support base changes, making it possible to adjust the distance between the support base and the table. By installing such height adjustment mechanisms at the four corners of the table or at the midpoints between the corners, the flatness of the table can be adjusted.

[0005] Patent Document 2 discloses a table movement mechanism that includes a guide rod capable of guiding the movement of the table. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2013-119217 A [Patent Document 2] JP 2017-121712 A Summary of the Invention [Problem to be solved by the invention]

[0007] The height adjustment mechanism of Patent Document 1 can be used for the table of the printer of Patent Document 2, but this increases the manufacturing cost. It is desirable to be able to assemble the table and guide rods so that the flatness of the table is high, even without providing a height adjustment mechanism.

[0008] An object of the present invention is to provide a table moving mechanism equipped with a table with high flatness. [Means for solving the problem]

[0009] First, a recording medium can be placed on a table, a guide rod capable of guiding movement of the table, a support member supporting the guide rod, a connection member connecting the guide rod and the support member, and a table movement mechanism, the connecting member has a plate-shaped fixing portion fixed to the support member, and a plate-shaped rod attachment portion supporting the guide rod and perpendicular to the fixing portion, and is configured by bending a metal plate-shaped member; The fixing portion has a first support surface that supports the support member, The rod attachment portion has a rod hole through which the guide rod is inserted and a protrusion that protrudes toward the support member, The protrusion has a second support surface that is abutted against the support member, A table movement mechanism is provided such that an edge of the second support surface is flush with an edge of the rod hole.

[0010] Secondly, preferably, the table moving mechanism according to the first aspect of the present invention further comprises: The protrusion is formed by cutting and bending the connection member.

[0011] Thirdly, preferably, in the table moving mechanism according to the first aspect, the support member is the table, The second support surface of the protrusion abuts against the rear surface of the table.

[0012] Fourthly, preferably, in the table moving mechanism according to the first aspect, The support member is a base material that supports both ends of the guide rod, The second support surface of the protrusion abuts against the rear surface of the base material.

[0013] Fifth, preferably, the table moving mechanism according to the fourth aspect, a cylindrical member having an inner peripheral surface that is slidable relative to an outer peripheral surface of the guide rod and an outer peripheral surface that is fitted into the rod hole; an adjustment member for adjusting a position of the rod attachment portion relative to the cylindrical member, a recess that is recessed below the outer circumferential surface of the cylindrical member is formed on the outer circumferential surface of the cylindrical member, The adjustment member has a base portion fixed to the rod attachment portion and a fitting portion fitted into the recess, A gap is set between the recess and the fitting portion.

[0014] Sixth, preferably, the table moving mechanism according to the fifth aspect, The recess is formed in an annular shape centered on the center line of the tubular member.

[0015] Seventh, preferably, the table moving mechanism according to the sixth aspect, The fitting portion has an arc-shaped portion formed along a part of a bottom surface of the annular recess, The distance between both ends of the arc portion is set to be larger than the diameter of the recess and smaller than the diameter of the outer circumferential surface of the tubular member. Effect of the Invention

[0016] The present invention can provide a table moving mechanism equipped with a table with high flatness. [Brief description of the drawings]

[0017] [Figure 1] 1 is a perspective view of a printer according to an embodiment. [Diagram 2] FIG. 2 is a diagram illustrating the internal configuration of the printer shown in FIG. [Diagram 3] Fig. 3A is a perspective view of a table moving mechanism, and Fig. 3B is an enlarged view of a portion surrounded by a circle in Fig. 3A. [Figure 4] 3B is a diagram showing the table moving mechanism shown in FIG. 3A as viewed obliquely from behind. [Diagram 5] 3B is a view of the table moving mechanism shown in FIG. 3A viewed from below. FIG. [Figure 6] Fig. 6A is a diagram illustrating a base material and a guide rod connected by a first connecting member, Fig. 6B is a perspective view of the first connecting member, and Fig. 6C is a diagram illustrating the first connecting member as viewed along the center line direction of the guide rod. [Figure 7] Fig. 7A is a diagram illustrating the table and the guide rod connected by a second connecting member, Fig. 7B is a perspective view of the second connecting member, and Fig. 7C is a diagram illustrating the second connecting member as viewed along the center line direction of the guide rod. [Figure 8] Fig. 8A is a cross-sectional view of the rod attachment portion, the tubular member, and the adjustment member, Fig. 8B is a cross-sectional view taken along line 8B-8B in Fig. 8A, and Fig. 8C is a diagram for explaining the function of the adjustment member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] <Example> FIG. 1 shows a printer 10 according to an embodiment. When the printer 10 is viewed from the front, the direction away from the printer 10 is the front, and the direction toward the printer 10 is the rear. Left, right, top, and bottom refer to the left, right, top, and bottom when the printer 10 is viewed from the front. Also, the symbols Fr, Rr, Le, Ri, Up, and Dn in the drawings refer to the front, back, left, right, top, and bottom, respectively. The same symbols are used for members and parts that perform the same function, and duplicate explanations are omitted or simplified as appropriate.

[0019] Please refer to Figures 1 and 2. The printer 10 is an inkjet type, and is equipped with a table moving mechanism 30 having a table 11 (support member) on which a recording medium 13 such as paper can be placed, a lifting device 35 capable of raising and lowering the table moving mechanism 30, a carriage moving device 50 capable of moving the carriage 12 above the table moving mechanism 30, a bottom 21 that supports these devices 30, 35, and 50, and a case 20 that houses the bottom 21 and these devices 30, 35, and 50.

[0020] (case) 1. The case 20 has, for example, a front wall 22 whose lower end is located at the front end of a bottom 21 and extends upward from the lower end, an inclined portion 23 that extends diagonally rearward and upward from the upper end of the front wall 22, a top plate portion 24 that extends rearward from the upper end of the inclined portion 23, and a pair of side walls 25, 25 (only the right side wall 25 is numbered) whose lower ends are located at the left and right ends of the bottom 21 and extend upward from the lower end. The inclined portion 23 has an opening 23a formed in the center and a transparent cover 23b that can open and close the opening 23a. A user of the printer 10 can open the cover 23b and access the table 11 through the opening 23a.

[0021] (carriage) Please refer to Fig. 2. The carriage 12 is in the shape of a box that opens downward, and houses a plurality of ink heads 51 having nozzles (not shown) capable of ejecting ink.

[0022] (Carriage moving device) The carriage moving device 50 comprises a carriage base member 52 supported by the bottom 21, two pulleys 53, 54 provided on both the left and right ends of the front surface of the carriage base member 52, a belt 55 that is stretched across the two pulleys 53, 54 and has a portion fixed to the carriage 12, a motor 56 that serves as the drive source for the pulley 53, and a guide rail 57 provided on the front surface of the carriage base member 52, extending in the width direction of the printer 10 and capable of guiding the movement of the carriage 12.

[0023] (Lifting device) The lifting device 35 comprises four rotatable screw shafts 36 (only the front two are shown) with male threads formed on their outer surfaces, a drive mechanism (not shown) for rotating the screw shafts 36, two lifting guide rods 37 for guiding the lifting and lowering of the table moving mechanism 30, and lifting base members 38, 38 erected on the bottom 21 to support the upper ends of the screw shafts 36 and the lifting guide rods 37.

[0024] (Table device) 3A to 5. The table movement mechanism 30 includes a transport device 31 (see FIG. 5) capable of transporting the recording medium 13 (see FIG. 2) placed on the table 11 by moving the table 11 back and forth, two cylindrical transport guide rods 27, 27 (guide rods 27) capable of guiding the movement of the table 11 by the transport device 31 relative to a base material 60, and a base material 60 (support member) supporting the transport device 31 and both end portions 27a of the two transport guide rods 27.

[0025] (base material) The base material 60 is, for example, a member formed by pressing a metal plate, and has a rectangular plate-like main body 61 and side walls 64a, 64b, 64c, 64c extending from each edge of the main body 61 toward the bottom 21 (see FIG. 2). The main body 61 is formed with four screw shaft insertion holes 62 through which the screw shaft 36 (see FIG. 2) can be inserted, and two lift guide rod insertion holes 63 through which the lift guide rod 37 can be inserted. A part (not shown) having a female thread that meshes with the screw shaft 36 (see FIG. 2) is attached to the main body 61 of the base material 60.

[0026] (Transportation device) Please refer to Figures 4 and 5. The conveying device 31 includes two pulleys 32, 32 provided on the lower surface 61a (surface facing the bottom 21) of the main body 61, a belt 33 that is stretched across the two pulleys 32, 32 and has a portion fixed to the table 11, and a motor (not shown) that rotates the pulley 32. For convenience of explanation, the conveying device 31 is not shown in Figures 3A and 4.

[0027] (Transport guide rod) The transport guide rods 27 are provided below the main body 61 and are arranged such that their length direction corresponds to the front-rear direction. The main body 61 is formed with longitudinal holes 61b aligned with the transport guide rods 27.

[0028] (First connecting member) 6A to 6C are referred to. The base material 60 and each transport guide rod 27 are connected by a first connection member 70. Each first connection member 70 is an L-shaped member formed by bending a metal plate. The first connection member 70 has a base material side fixing part 71 (fixing part) fixed to the main body part 61 of the base material 60, and a first rod attachment part 72 that is perpendicular to the base material side fixing part 71 and is attached to the transport guide rod 27.

[0029] (Fixed part on base material side) The substrate-side fixing portion 71 has a first substrate-supporting surface 71 a that is placed on the lower surface 61 a of the main body portion 61 and is capable of supporting the main body portion 61 .

[0030] (Fixation of the base material and the first connection member) The substrate-side fixing portion 71 and the main body portion 61 are fixed to each other by a male screw 66 (see FIG. 3B) inserted through the main body portion 61 and a female screw 71b formed on the substrate-side fixing portion 71 so as to be capable of being fastened to the male screw 66.

[0031] (First rod attachment part) The first rod attachment portion 72 has a first rod hole 74 into which the end portion 27a of the transport guide rod 27 is inserted and fitted.

[0032] (1st boundary hole) At the boundary between the first rod mounting part 72 and the substrate-side fixed part 71, a first protrusion 77, which will be described later, is formed by cutting, bending and raising, thereby forming a first boundary hole 75. The first boundary hole 75 is formed across both the first rod mounting part 72 and the substrate-side fixed part 71, and is a rectangular hole whose longitudinal direction is the width direction (left-right direction) of the first rod mounting part 72.

[0033] (Protrusion, 2nd support surface) 6B and 6C. The first rod attachment portion 72 has a first protruding portion 77 that protrudes from the inner peripheral surface 76 of the first boundary hole 75 toward the main body portion 61. The first protruding portion 77 has an extending portion 79 that extends toward the main body portion 61 further than the first substrate supporting surface 71a, and second substrate supporting surfaces 78, 78 that abut against the lower surface 61a of the main body portion 61 (the back surface of the substrate 60). The second substrate supporting surfaces 78, 78 are provided as a pair with the extending portion 79 in between. That is, the first substrate supporting surface 71a and the second substrate supporting surfaces 78, 78 are located on the same plane.

[0034] The first rod attachment portion 72 has a thickness direction surface 73 facing in its thickness direction (the length direction of the transport guide rod 27). An edge 78a of the second substrate support surface 78 and an edge 74a of the first rod hole 74 are located on the same plane (on the thickness direction surface 73).

[0035] (protrusion) The extension 79 can be fitted into a hole 65 (FIG. 3B) formed in the main body 61. The extension 79 may not be provided, and the entire tip of the first protruding portion 77 may serve as the second substrate support surface 78. The protruding portion 79 is located between the two second substrate support surfaces 78, 78, but the position thereof can be changed as appropriate. This configuration may be adopted in the second connecting member 80 described below.

[0036] (Second connecting member) Please refer to Figures 7A and 7B. The table 11 and each transport guide rod 27 are connected by a second connection member 80. The second connection member 80 is a downwardly facing, generally U-shaped member formed by bending a metal plate. The second connection member 80 has a table-side fixing part 81 (fixing part) that can be fixed to the table 11 (separate member), and two second rod attachment parts 82, 82 that extend from both ends of the table-side fixing part 81 toward the bottom part 21 (see Figure 2) and can attach the transport guide rods 27.

[0037] (Fixed part on table side) The table side fixed portion 81 has a first table support surface 81a (first support surface) that is placed on the lower surface 11a of the table 11.

[0038] (Fixing the table and the second connecting member) The table side fixing part 81 and the table 11 are fixed to each other by a male screw (not shown) inserted through the table 11 and two female screws 81b, 82b formed on the table side fixing part 81 so that it can be fastened to the male screw.

[0039] (Second rod attachment part) Each second rod attachment portion 82 can be inserted through a hole 61b (see FIG. 4) of the main body portion 61, and has a second rod hole 84 through which the conveying guide rod 27 and a tubular member 90 described later are inserted.

[0040] (Second boundary hole) At the boundary between the second rod mounting part 82 and the table side fixed part 81, a second protrusion 87, which will be described later, is formed by cutting, bending and raising, thereby forming a second boundary hole 85. The second boundary hole 85 is formed across both the second rod mounting part 82 and the table side fixed part 81, and is a rectangular hole whose longitudinal direction is the width direction (left-right direction) of the second rod mounting part 82.

[0041] (protrusion, support surface) Please refer to Figures 7B and 7C. The second rod attachment portion 82 has a second protruding portion 87 extending from an inner peripheral surface 86 of the second boundary hole 85 toward the table 11. The second protruding portion 87 has a second table support surface 88 that abuts against the lower surface 11a (rear surface) of the table 11. The first table support surface 81a and the second table support surface 88 are located on the same plane.

[0042] The second rod attachment portion 82 has a thickness direction surface 83 facing in its thickness direction (the length direction of the transport guide rod 27). An edge 88a of the second table support surface 88 and an edge 84a of the second rod hole 84 are located on the same plane (on the thickness direction surface 83).

[0043] The second connecting member 80 is slidable relative to the transport guide rod 27. The configuration thereof will be described below.

[0044] (Cylindrical member) 8A and 8B, the transport guide rod 27 is provided with a cylindrical member 90 having an inner peripheral surface 91 that is slidable relative to the outer peripheral surface 28 of the transport guide rod 27. The second rod attachment portion 82 has a second rod hole 84 through which the cylindrical member 90 and the transport guide rod 27 are inserted and which fits into the outer peripheral surface 92 of the cylindrical member 90.

[0045] (recess) The cylindrical member 90 has an outer circumferential surface 92 formed with a recess 93 that is recessed from the outer circumferential surface 92 .

[0046] (Adjustment material) The position of the second rod mounting portion 82 relative to the tubular member 90 can be adjusted by the adjustment member 40. The adjustment member 40 is, for example, a pressed plate material, and is overlapped on the second rod mounting portion 82. The width of the adjustment member 40 is approximately the same as the width of the second rod mounting portion 82.

[0047] The adjustment member 40 has a base 41 fixed to the second rod attachment portion 82, and a fitting portion 45 fitted into the recess 93. In the embodiment, the base 41 is located above the tubular member 90, but the adjustment member 40 may be disposed so that the base 41 is located below the tubular member 90.

[0048] (Fixation of the second rod attachment part and the adjustment member) The base 41 of the adjustment member 40 and the second rod mounting portion 82 are fixed to each other by a male screw 43 inserted through the base 41 and a female screw 82b formed on the second rod mounting portion 82 so that it can be fastened to the male screw 43.

[0049] The second rod mounting portion 82 has a mounting protrusion 82a that protrudes from the second rod mounting portion 82 toward the base portion 41. The mounting protrusion 82a fits into a hole 44 formed in the base portion 41. The hole 44 is located above the male thread 43.

[0050] (recess) The recess 93 is, for example, an annular groove centered on the center line CL of the tubular member 90. That is, the recess 93 is formed over the entire outer circumferential surface 92 of the tubular member 90 in the circumferential direction.

[0051] (Fitting part) The fitting portion 45 has an arc-shaped arc portion 47 formed along approximately the upper half of the bottom surface 93a of the annular recess 93, and two linear portions 46, 46 extending from both ends of the arc portion 47 to the bottom 21 (see Figure 2).

[0052] (Gap between recess and fitting part) 8A, with respect to the direction of the center line CL, the dimension T1 of the fitting portion 45 (the thickness of the adjustment member 40) is smaller than the dimension T2 of the recess 93 (the width of the recess 93). That is, a gap is set in the direction of the center line CL between the recess 93 and the fitting portion 45. This gap absorbs play in the axial longitudinal direction caused by the tolerances of each part.

[0053] Refer to Fig. 8B. The distance between both ends of the arc portion 47 (the distance D1 between the straight portions 46, 46) is larger than the diameter of the recess 93 (the diameter D2 of a circle whose circumference is the bottom surface 93a of the recess) (D1>D2), and is smaller than the diameter D3 of the outer circumferential surface 92 of the tubular member 90 (D3>D1). That is, a gap is set between the recess 93 and the fitting portion 45 in the radial direction of the tubular member 90. This gap absorbs play in the radial direction of the shaft caused by the tolerances of each part.

[0054] The recess 93 may be provided in an arc shape on a part of the outer circumferential surface 92 rather than on the entire circumferential direction thereof, and an arc-shaped fitting portion 45 that fits into that portion may be provided.

[0055] (Dimensional accuracy of first connecting member) The effects of the embodiment will be described below with reference to Figures 3A and 3B. The table movement mechanism 30 includes a table 11 on which a recording medium 13 (see Figure 2) can be placed, a transport guide rod 27 capable of guiding the movement of the table 11, a base material 60 separate from the transport guide rod 27, and a first connection member 70 connecting the transport guide rod 27 and the base material 60.

[0056] 6A and 6B, the first connecting member 70 has a plate-shaped base material side fixing part 71 that is fixed to the base material 60 (supporting member), and a first rod attachment part 72 that supports the transport guide rod 27 and is perpendicular to the base material side fixing part 71, and is configured by bending a metal plate. The first protrusion 77 is formed by cutting and bending the first connecting member 70.

[0057] The first rod attachment portion 72 has a first rod hole 74 through which the transport guide rod 27 is inserted, and a first protruding portion 77 that protrudes toward the substrate 60. The first protruding portion 77 has second substrate supporting surfaces 78, 78 (second supporting surfaces) that abut against the lower surface 61a of the main body portion 61 (the back surface of the substrate 60).

[0058] As described above, the first connection member 70 is formed by bending a metal plate material. Depending on the accuracy of bending, the dimension L1 from the first rod hole 74 through which the conveying guide rod 27 is inserted to the surface supporting the substrate 60 may vary from part to part. However, the substrate 60 is supported not only by the substrate side fixing portion 71 but also by the second substrate supporting surfaces 78, 78. The edge 78a of the second substrate supporting surface 78 is located on the same plane as the edge 74a of the first rod hole 74. That is, the portion not bent (the second substrate supporting surface 78, the edge 78a of the substrate supporting surface 78) also supports the substrate 60, so that the accuracy of the dimension L1 is improved. Therefore, it is possible to provide a table moving mechanism 30 equipped with a table 11 with high flatness. Furthermore, the second substrate supporting surfaces 78, 78 are provided as a pair with the extension portion 79 in between. Therefore, the pair of second substrate support surfaces 78, 78, whose dimensional accuracy is ensured by cutting, bending and raising, are abutted against the lower surface 61a of the main body 61 (the rear surface of the substrate 60). As a result, the first connecting member 70 is positioned on the lower surface 61a of the main body 61 (the rear surface of the substrate 60) by two surfaces, preventing wobbling. Furthermore, the two identical surfaces allow the dimension L1 from the first rod hole 74 to the surface supporting the substrate 60 to be set to the same length at both ends of the extension portion 79. Therefore, the flatness accuracy of the table 11 can be further ensured.

[0059] (Dimensional Accuracy of Second Connection Member 80) 3A and 3B, the table movement mechanism 30 includes a table 11 on which a recording medium 13 (see FIG. 2) can be placed, a transport guide rod 27 capable of guiding the movement of the table 11, the table 11 separate from the transport guide rod 27, and a second connection member 80 that connects the transport guide rod 27 and the table 11.

[0060] 7A, the second connecting member 80 has a table side fixed portion 81 that is fixed to the table 11, and a second rod attachment portion 82 that supports the transport guide rod 27 and is perpendicular to the table side fixed portion 81, and is configured by bending a metal plate. The second protrusion 87 is formed by cutting and bending the second connecting member 80.

[0061] The second rod attachment portion 82 has a second rod hole 84 through which the transport guide rod 27 is inserted, and a second protruding portion 87 protruding from an inner peripheral surface 86 of a second boundary hole 85 toward the table 11. The second protruding portion 87 has a second table support surface 88 that abuts against the lower surface 11a (rear surface) of the table 11.

[0062] As described above, the second connection member 80 is formed by bending a metal plate. Depending on the bending precision, there is a risk of variation in the dimension L2 from the second rod hole 84, through which the conveyor guide rod 27 is inserted, to the surface supporting the table 11 for each part. However, the table 11 is supported not only by the first table support surface 81a but also by the second table support surface 88.

[0063] The edge 88a of the second table support surface 88 is located on the same plane as the edge 84a of the second rod hole 84. That is, the portion not bent (the second table support surface 88, the edge 88a of the second table support surface 88) also supports the table 11, so the accuracy of the dimension L2 is increased. Therefore, it is possible to provide a table moving mechanism 30 in which the flatness of the table 11 is high. Furthermore, the second table support surface 88 is provided at both ends in the longitudinal direction of the table side fixed part 81. Therefore, the two same surfaces, the second table support surface 88 at one end side and the second table support surface 88 at the other end side, whose dimensional accuracy is ensured by cutting, bending and raising, are abutted against the lower surface 11a (rear surface) of the table 11. As a result, the second connecting member 80 is positioned on the lower surface 11a (rear surface) of the table 11 by two surfaces, so that wobbling is prevented. Furthermore, the dimension L2 from the second rod hole 84 to the surface supporting the table 11 can be set to the same length at both ends of the table side fixed part 81. Therefore, the precision of the flatness of the table 11 can be further ensured.

[0064] (Recess and fitting part) The table movement mechanism 30 includes a cylindrical member 90 having an inner peripheral surface 91 slidable relative to the outer peripheral surface 28 of the transport guide rod 27 and an outer peripheral surface 92 fitted into the second rod hole 84, and an adjustment member 40 that adjusts the position of the second rod attachment portion 82 relative to the cylindrical member 90. A recess 93 that is recessed deeper than the outer peripheral surface 92 of the cylindrical member 90 is formed in the outer peripheral surface 92 of the cylindrical member 90. The adjustment member 40 includes a base 41 fixed to the second rod attachment portion 82, and a fitting portion 45 that fits into the recess 93. A gap is set between the recess 93 and the fitting portion 45.

[0065] There is variation in dimensions between the transport guide rod 27 and the tubular member 90. If no gap is set, the tubular member 90 is fixed by the fitting portion 45 of the adjustment member 40. If the tubular member 90 is fixed in a state where the center of the tubular member 90 is misaligned with the center of the transport guide rod 27, the frictional force generated when the tubular member 90 slides relative to the transport guide rod 27 becomes large.

[0066] 8A and 8B, it is possible to allow the tubular member 90 to move relative to the transport guide rod 27 as shown in Fig. 8C. This is a configuration that can absorb dimensional variations, and it is possible to reduce the frictional force when the tubular member 90 slides relative to the transport guide rod 27.

[0067] (Shape of the recess) The recess 93 is formed in an annular shape centered on the center line of the tubular member 90. If the recess 93 is, for example, a depression formed in a part of the circumferential direction, it is necessary to rotate the tubular member 90 when fitting the fitting portion into the depression. If the recess 93 is formed over the entire circumferential direction of the tubular member 90, it is not necessary to rotate the tubular member 90.

[0068] (Shape of fitting part) The fitting portion 45 has an arc-shaped arc portion 47 formed along a part of the bottom surface 93a of the annular recess 93. The distance between both ends of the arc portion 47 (the distance D1 between the straight portions 46, 46) is larger than the diameter of the recess 93 (the diameter D2 of a circle whose circumference is the bottom surface 93a of the recess) (D1>D2) and is smaller than the diameter D3 of the outer circumferential surface 92 of the tubular member 90 (D3>D1). Thus, the play in the axial direction caused by the tolerances of each component is absorbed, and the arc portion 47 is formed in a substantially semicircular shape, so that it fits into the substantially upper half of the tubular member 90, and therefore the position of the tubular member 90 can be adjusted more reliably.

[0069] As long as the functions and effects of the present invention are achieved, the present invention is not limited to the examples. [Explanation of symbols]

[0070] 10. Printer 11...Table (support member) 27...Transport guide rod (guide rod), 27a...End of transport guide rod 40…Adjustment member 41...Base 45…Fitting part 47…Arc section 60...Base material (support member) 61a...Bottom surface (back surface of substrate) 70...First connecting member (connecting member) 71…Base material side fixing part (fixing part) 71a...First base material support surface (first support surface) 72...First rod attachment portion (rod attachment portion) 73…Thickness direction surface 74...first rod hole (rod hole), 74a...edge of first rod hole 75...1st boundary hole (boundary hole) 76...inner circumferential surface of first boundary hole 77...First protrusion (protrusion) 78... second substrate supporting surface (supporting surface), 78a... edge of second substrate supporting surface 80...Second connecting member (connecting member) 81...Table side fixed part (fixed part) 81a...First table support surface (first support surface) 82...Second rod attachment portion (rod attachment portion) 83…Thickness direction surface 84... second rod hole (rod hole), 84a... edge of second rod hole 85…Second boundary hole (boundary hole) 86...inner surface of second boundary hole 87…Second protrusion (protrusion) 88... second table support surface (second support surface), 88a... edge of the second support surface 90...Cylindrical member 91...inner peripheral surface of tubular member 92...Outer circumferential surface of cylindrical member 93: Recess; 93a: Bottom surface of recess

Claims

1. a table on which a recording medium can be placed, a guide rod capable of guiding movement of the table, a support member supporting the guide rod, a connection member connecting the guide rod and the support member, and a table movement mechanism, the connecting member has a plate-shaped fixing portion fixed to the support member, and a plate-shaped rod attachment portion supporting the guide rod and perpendicular to the fixing portion, and is configured by bending a metal plate-shaped member; The fixing portion has a first support surface that supports the support member, The rod attachment portion has a rod hole through which the guide rod is inserted and a protrusion that protrudes toward the support member, The protrusion has a second support surface that is abutted against the support member, A table moving mechanism, wherein an edge of the second support surface is positioned on the same plane as an edge of the rod hole.

2. The table moving mechanism according to claim 1 , wherein the protrusion is formed by cutting and bending the connecting member.

3. the support member is the table, The table moving mechanism according to claim 1 , wherein the second support surface of the protrusion abuts against a rear surface of the table.

4. The support member is a base material that supports both ends of the guide rod, The table moving mechanism according to claim 1 , wherein the second support surface of the protrusion abuts against a rear surface of the base material.

5. a cylindrical member having an inner peripheral surface that is slidable relative to an outer peripheral surface of the guide rod and an outer peripheral surface that is fitted into the rod hole; an adjustment member for adjusting a position of the rod attachment portion relative to the cylindrical member, a recessed portion that is recessed below the outer circumferential surface of the cylindrical member is formed on the outer circumferential surface of the cylindrical member, The adjustment member has a base portion fixed to the rod attachment portion and a fitting portion fitted into the recess, The table moving mechanism according to claim 4 , wherein a gap is provided between the recess and the fitting portion.

6. The table moving mechanism according to claim 5 , wherein the recess is formed in an annular shape centered on a center line of the cylindrical member.

7. The fitting portion has an arc-shaped portion formed along a part of a bottom surface of the annular recess, 7. The table moving mechanism according to claim 6, wherein a distance between both ends of said arc portion is set to be larger than a diameter of said recess and smaller than a diameter of said outer circumferential surface of said tubular member.

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