JP2008062535A - Printer apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer apparatus which can maintain a printing precision by making uniform an opposing interval between an ink jet hole and a printing medium. <P>SOLUTION: The printer apparatus 1 includes a carriage 40 which is comprised of both a slide part 41 set to be freely movable right and left along a guide member 110 that extends right and left above a supporting member 3 for supporting the printing medium M, and a head holding part 46 attached to the slide part 41 for holding an inkjet head 50 directing a plurality of the ink jet holes 51 downwards. The slide part 41 of the carriage 40 consists of a base member 42 supported to be freely movable right and left to the guide member 110, an oscillating member 43 to which the head holding part 46 is attached and which is attached to be able to freely oscillate back and forth centering a right-left direction axis to the base member 42, and a position adjusting mechanism 60 which adjusts an oscillation position of the oscillating member 43 by oscillating the oscillating member 43. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention holds an ink jet head with a slide portion movably provided to the left and right along a guide member extending left and right above a support member that supports a print medium, and a plurality of ink ejection holes directed downward. The present invention relates to a printer apparatus having a carriage including a head holding unit.

  According to the above printer apparatus, printing is performed by ejecting ink onto the print medium supported by the lower support member from the ink ejection hole while the slide portion moves to the left and right. In order to perform printing by the inkjet method with a predetermined accuracy, it is necessary to set an appropriate interval between the ink ejection holes and the print medium, and to adjust the facing interval by moving the carriage slide portion up and down. 2. Description of the Related Art A printer device having an adjustment mechanism that can perform the above is known (for example, see Patent Document 1).

JP 2003-237173 A

  However, in order for the spacing between the ink ejection holes and the print medium to be uniform, the opening surface of the ink ejection holes needs to be parallel to the support surface of the support member. Since the ink jet head is attached in this way, it is necessary to increase the processing accuracy of a large number of members such as a guide member and a carriage to eliminate the assembly error, which may increase the cost. For this reason, there is a demand for means that can make the opening surface of the ink ejection hole parallel to the support surface of the support member without increasing the cost.

  The present invention has been made in view of such problems, and provides a printer device capable of maintaining a predetermined printing accuracy by making the facing distance between the ink ejection holes and the printing medium uniform without increasing the cost. The purpose is to do.

  In order to achieve the above object, a printer apparatus according to the present invention is provided with a support member (for example, the stage 3 in the embodiment) that supports a portion to be printed on a print medium and a support member that extends to the left and right. A guide member; an inkjet head having a plurality of ink ejection holes for ejecting ink to the print medium; a slide portion provided movably to the left and right along the guide member; and a plurality of attachments attached to the slide portion In a printer device having a carriage including a head holding portion that holds an ink jet head with an ink ejection hole facing downward, a base member (for example, a slide member is supported by a guide member so as to be movable left and right) In addition, the slider base 42) in the embodiment and the head holding portion are attached, and the base member has a horizontal axis A swing member (for example, the swing bracket 43 in the embodiment) that is swingably mounted back and forth with respect to the center, and a position adjustment mechanism that swings the swing member to adjust the swing position of the swing member ( For example, it comprises the first position adjusting mechanism 60) in the embodiment.

  In addition, the base member and the swing member each have a flat plate portion opposed to each other in the front-rear direction, and the position adjusting mechanism has a first taper surface and a first groove formed on the flat plate portion of the swing member. A first taper piece (for example, the fixed taper piece 61 in the embodiment) housed in a manner that is restricted from moving to the left and right inside, and a second taper surface formed on the flat plate portion of the base member. A second taper piece (for example, the sliding taper piece 62 in the embodiment) in which the second taper surface is aligned with the first taper surface and is slidably accommodated in the right and left, and the base A feed mechanism that is provided on a side portion of the flat plate portion of the member and presses the second taper piece in the left and right in the second groove, and urges the second taper piece in the second groove to the left and right outside. The first urging member (for example, the first spring 63 in the embodiment) and the flat plate portion of the swing member are the base portion. And a second biasing member (for example, the second spring 64 in the embodiment) that biases in the direction of approaching the flat plate portion, and the second taper piece is slid to slide the first taper. The piece may be moved back and forth so that the swinging member swings back and forth.

  The outer surface of the first taper piece opposite to the first taper surface (for example, the front end surface 61b in the embodiment) and the inner surface of the first groove facing the outer surface on the opposite side (for example, the inner surface of the front end in the embodiment) 43c) is preferably formed in an arc shape when viewed from the side.

  According to the printer device of the present invention, the head holding portion is swung together by adjusting the swing position of the swing member attached between the base member and the head holding portion by the position adjusting mechanism, and the ink jet printer. The head tilt is adjusted. Accordingly, the support surface of the support member and the opening surface of the ink ejection hole can be made parallel without increasing the processing accuracy, and a predetermined printing accuracy can be maintained.

  When the position adjusting mechanism is configured to swing the swinging member using the wedge action of the taper piece housed in the grooves formed in both the flat plate portions of the base member and the swinging member, Since the main constituent members of the position adjusting mechanism are built in the base member and the swinging member, the periphery of the base member and the swinging member is not enlarged when the position adjusting mechanism is provided.

  Further, the first taper piece is moved back and forth by forming the outer surface of the first taper piece provided on the swinging member and the inner surface of the first groove facing the outer surface in an arc shape in a side view. Sometimes, the inner surface of the first groove is in sliding contact with the outer surface of the first taper piece, and the swing member can be smoothly swung.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. First, the overall configuration of the printer apparatus 1 according to the present invention whose schematic configuration diagram is shown in FIG. 1 will be described. In the following, the directions of arrows F, L, and U in FIG. It is above. The printer apparatus 1 includes a transport mechanism 2 that transports the print medium M back and forth, a stage 3 that supports the print medium M, and a printer head 4 that is provided so as to be movable right and left above the stage 3. Has been.

  The transport mechanism 2 includes a main roller 20 provided behind the stage 3 and a paper discharge roller 25 provided in front of the stage 3. The main roller 20 and the paper discharge roller 25 are composed of feed rollers 21 and 26 and presser rollers 22 and 27 which are provided so as to be rotatable about a rotating shaft extending in the left and right directions and which are opposed to each other in the vertical direction. When the print medium M is inserted between the feed rollers 21 and 26 and the press rollers 22 and 27 and the feed rollers 21 and 26 are rotationally driven by an electric motor or the like, the press rollers 22 and 27 are driven and the print medium M is driven. Is conveyed back and forth. The stage 3 has a large number of through holes in the upper surface 3a through which a negative pressure is generated by a pump (not shown), and the print medium M conveyed to the stage 3 is supported by being sucked into the upper surface 3a by a negative pressure. .

  The printer head 4 includes a plurality of inkjet heads 50 each having a plurality of ink ejection holes 51 for ejecting ink I on a carriage 40 attached to a guide member 110 provided to extend left and right above the stage 3. They are arranged side by side (see FIG. 5). The ink ejection holes 51 of each inkjet head 50 are formed in, for example, three rows, and the row direction is directed front and rear. Further, the opening surface 50 a where the ink ejection holes 51 are opened faces the upper surface 3 a of the stage 3.

  According to the printer apparatus 1 configured as described above, an operation for transporting the print medium M by a predetermined length by the transport mechanism 2 and a print medium supported on the upper surface 3a of the stage 3 from the ink ejection holes 51 while moving the carriage 40 left and right. By repeating the operation of ejecting ink I to M, ink jet printing is performed.

  Hereinafter, the configuration of the printer head 4 will be described with reference to FIGS. The guide member 110 is configured such that two guide rails 112, 112 extending in the left-right direction are mounted side by side on the front surface of the rail base 111 provided to extend left and right above the rear portion of the stage 3. Yes. The carriage 40 includes a slide portion 41 provided so as to be movable right and left along the two guide rails 112, 112, and a head holding portion 46 attached to the slide portion 41.

  The slide part 41 includes a slider base 42 supported via a rail holder 116 fitted to the guide rail 112 and a swing bracket 43 provided on the front side of the slider base 42. The slider base 42 and the swing bracket 43 have flat plate portions 42a and 43a, respectively, and the flat plate portions 42a and 43a are opposed to each other in the front-rear direction. As shown in FIG. 2, a pin holder 45 is fastened to the lower end of the flat plate portion 42 a of the slider base 42 to hold the pin 45 with the shaft extending left and right on the front side of the slider base 42. The lower end of the swing bracket 43 is formed in a V shape in a side sectional view and is engaged with the pin 45 from above. As a result, the swing bracket 43 can swing back and forth about the pin 45 as a support shaft.

  The head holding portion 46 has a head bracket 47 integrally including a bottom plate 47a, left and right side plates 47b and 47c extending upward from the side edge of the bottom plate 47a, and a rear plate 47d extending upward from the rear edge of the bottom plate 47a. A plurality of inkjet heads 50 are provided in a space surrounded by the upper surface of the bottom plate 47a of the head bracket 47 and the inner surfaces of the left and right side plates 47b and 47c. A rear plate 47 d of the head bracket 47 is coupled to the front surface of the flat plate portion 43 a of the swing bracket 43. By this connection, the head holding portion 46 is provided to protrude forward with respect to the slide portion 41, and is moved to the left and right above the front and rear central portion of the upper surface 3 a of the stage 3 as the slide portion 41 moves. The upper surface of the bottom plate 47a of the head bracket 47 is substantially horizontal. The bottom plate 47a of the head bracket 47 is formed with a plurality of through holes 47d arranged at equal intervals on the left and right, and an opening surface 50a through which the ink ejection holes 51 open is opposed to the support surface 3a of the stage 3 through the through holes 47d. ing.

  As shown in FIG. 6, the slide portion 41 has a first position adjustment mechanism 60 that adjusts the swing position of the swing bracket 43. 6 shows the first position adjustment mechanism 60 provided at the left edge of the slide portion 41, and the left upper end portion of the swing bracket 43 is cut away. The first position adjusting mechanism 60 includes a fixed taper piece 61 and a sliding taper piece 62 each formed in a wedge shape and having tapered surfaces 61a and 62a, a feed mechanism 70 for pressing the sliding taper piece 62, and a sliding taper piece. The first spring 63 that biases 62 and the second spring 64 that biases the swing bracket 43 are configured.

  On the front surface of the flat plate portion 42a of the slider base 42 facing each other and the rear surface of the flat plate portion 43a of the swinging bracket 43, a piece receiving groove is formed. The fixed taper piece 61 is accommodated in the first piece receiving grooves 43b and 43b formed at the upper ends of the left and right side edge portions of the swing bracket 43, and the left and right side edge portions of the slider base 42 are accommodated. The sliding taper piece 62 is slidably accommodated in the left and right directions in the second piece accommodation grooves 42b and 42b formed at the upper end. Both the taper pieces 61, 62 are aligned such that the taper surfaces 61a, 62a face each other in the front-rear direction, and the both taper surfaces 61a, 62a aligned in the front-rear direction extend obliquely rearward from the left-right outer side toward the left-right inner side. (Refer to FIG. 4).

  The fixed taper piece 61 has a front end surface 61b opposite to the taper surface 61a formed in a semicircular shape in a side sectional view, and the first piece receiving groove 43b is a front end facing the front end surface 61b of the fixed taper piece 61. The inner surface 43c is formed in a semicircular shape in a side sectional view. Further, in a state where the fixed taper piece 61 is accommodated in the first piece accommodation groove 43b, the left and right side surfaces of the fixed taper piece 61 are close to the left and right inner surfaces of the first piece accommodation groove 43b, and the fixed taper piece 61 Play spaces are formed above and below 61. On the other hand, the inner surface of the rear end of the second piece accommodating groove 42 b extends in parallel with the front surface of the flat plate portion 42 a of the slider base 42. The sliding taper piece 62 slides left and right while bringing the rear end surface opposite to the taper surface 62a into sliding contact with the inner surface of the rear end.

  A bolt 66 is inserted from the front surface of the flat plate portion 43 a of the swing bracket 43. The bolt 66 penetrates the fixed taper piece 61 and the sliding taper piece 62 back and forth, and is screwed into the flat plate portion 42 a of the slider base 42. In order to insert the bolt 66, the fixed taper piece 61 is formed with a long hole 61c extending vertically, and the sliding taper piece 62 is extended with a long hole 62c extending left and right. Is formed. Due to the shape of the long holes 61c and 62c, the fixed taper piece 61 is relatively movable in the vertical direction while the relative movement to the left and right with respect to the swing bracket 43 is restricted, and the sliding taper piece is also movable. 62 is restricted from moving up and down relative to the slider base 42, but is relatively movable left and right. The fixed taper piece 61 is housed in the first piece housing groove 43b and the swinging bracket 43 in the state where the bolt 66 is inserted, and the sliding taper piece 62 is housed in the second piece housing groove 42b. When the bolt 66 is assembled to the slider base 41 in a state of being screwed, the taper pieces 61 and 62 are assembled at the same time. As described above, both the taper pieces 61 and 62 are disposed on the opposing surface side of the flat plate portions 42a and 43a and are built in the slider base 41 and the swinging bracket 42. However, both the taper pieces 61 and 62 are easily assembled. be able to.

  The feed mechanism 70 is a screw mechanism, has a through hole 71 a having an internal thread formed on the inner peripheral surface thereof, and is fastened to the left and right side surfaces of the flat plate portion 42 a of the base plate 42, and the through hole 71 a of the plate 71. And an adjustment screw 72 to be screwed together. The plate 71 is attached so as to cover the left and right outer sides of the second piece housing groove 42b. The adjustment screw 72 has a top 72 a that functions as a knob for rotating operation, exposed to the left and right outside of the slide portion 41, and a tip 72 b located inside the second piece receiving groove 42 b so that the sliding taper piece 62 It abuts on the left and right outer surfaces. For this reason, when the adjustment screw 62 is rotated to increase the amount of insertion into the second piece receiving groove 42b, the left and right outer surfaces of the sliding taper piece 62 are pressed inward in the left and right directions. As a result, the sliding taper piece 62 is guided by the bolt 66 and the long hole 62c and is slid toward the left and right insides in the second piece receiving groove 42b.

  As shown in FIG. 3, a first spring 63 is housed inside the second piece housing groove 42b on the left and right sides with respect to the sliding taper piece 62, and the end of the first spring 63 is It is housed in a cylindrical spring housing space 62b that is formed inside the sliding taper piece 62 and opens to the left and right inner surfaces. The first spring 63 abuts against the bottom surface of the spring accommodating space 62b of the sliding taper piece 62 and biases the sliding taper piece 62 toward the left and right outer sides. Further, a bracket 65 is fastened to the front upper portion of the flat plate portion 42a of the slider base 42 so as to protrude forward, and second springs 64, 64 are attached to the lower surface of the bracket 65 on the left and right. The second spring 64 is brought into contact with the front surface of the flat plate portion 43a of the swing bracket 43 and biases the flat plate portion 43a of the swing bracket 43 toward the rear.

  On the other hand, as shown in FIGS. 7 and 8, the head holding portion 46 has a second position adjustment mechanism 80 for adjusting the position of the inkjet head 50 between the head bracket 47 and each inkjet head 50. Is provided. The second position adjusting mechanism 80 includes a guide plate 81 attached to the upper surface of the bottom plate 47a of the head bracket 47, a plurality of linear motion plates 82 attached to the upper surface of the guide plate 81 side by side, and each linear motion plate. And a plurality of oscillating plates 83 for holding the inkjet head 50.

  The guide plate 81 is formed in a substantially rectangular outer shape, and a plurality of through holes (not shown) are formed side by side at equal intervals in the same manner as the head bracket 47. The through hole is aligned with the through hole of the head bracket 47, and the lower surface side of the bottom plate 47 a of the head bracket 47 and the upper surface side of the guide plate 81 are communicated. The linear motion plate 82 is formed in a U shape in plan view, and is mounted on the guide plate 81 so as to surround the front, rear and left sides of the through hole of the guide plate 81.

  In addition, elongated holes (a first elongated hole 81b and a second elongated hole 81c) that extend vertically are formed at two locations, the left rear side and the front side, around the through holes of the guide plate 81, The first and second long holes 81b and 81c are arranged on the guide plate 81 at equal intervals on the left and right. On the other hand, the linear guide plate 82 is provided with a first guide pin 84 that is press-fitted into the left rear end portion and fixed in a state of projecting up and down, and a second guide pin 85 is press-fitted into the front end portion. It is fixed and provided so as to protrude only downward. In the linear movement plate 82, a portion protruding downward from the first guide pin 84 is fitted into the first long hole 81b, and a portion protruding downward from the second guide pin 85 is the second length. It fits in the hole 81c and is attached to the guide plate 81. Thereby, the linear motion plate 82 is positioned with respect to the guide plate 81 and arranged side by side at equal intervals, so that the back and forth movement on the guide plate 81 is guided.

  The swing plate 83 is formed in a U shape in plan view, and an engagement groove 83d in a V shape in plan view is formed in a corner portion of the left rear end. The engaging groove 83d is engaged from the front with a portion protruding above the first guide pin 84, and the swing plate 83 is moved on the linear motion plate 82 with the first guide pin 84 as a fulcrum. It can swing within the upper surface. Further, the swing plate 83 is chamfered at the corner of the left front end, and has a tapered surface 83e extending obliquely from the front toward the right at the corner.

  The ink jet head 50 is fitted and attached to the inside of a recess surrounded by the front portion 83a, the rear portion 83b, and the side portion 83c of the swing plate 83. Further, a presser bracket 48 is fastened to the swing plate 83 from the right side in a state where the ink jet head 50 is fitted, and the ink jet head 50 is sandwiched between the press bracket 48 and the swing plate 73 from side to side. When the ink jet head 50 is attached in this way, the opening surface 50 a becomes substantially parallel to the lower surface of the swing plate 83. The oscillating plate 83 is formed so as to be thicker in the vertical direction than the guide plate 81 and the linear motion plate 82 in order to support the inkjet head 50 in the vertical direction.

  When the guide plate 81, the linear motion plate 82, and the swing plate 83 are sequentially stacked on the bottom plate 47a of the head bracket 47 as described above, the head plate 47 is surrounded by the upper surface of the bottom plate 47a and the inner surfaces of the left and right side plates 47b and 47c. The space communicates with the lower surface side of the bottom plate 47a through the through holes of the head bracket 47 and the guide plate 81. The opening surface 50a of the inkjet head 50 provided in this space is opposed to the upper surface 3a of the stage 3 through these through holes.

  On the guide plate 81, a linear motion side holding tool 100 that holds the linear motion side micrometer head 90 is fixedly attached to the guide plate 81 in front of each of the linear motion plates 82, and swings. A swing-side holder 105 that holds the side micrometer head 95 is fixedly attached to the linear motion plate 82.

  Both micrometer heads 90 and 95 are threadedly engaged with spindles 91 and 96 having external threads formed on the outer peripheral surfaces thereof and sleeves 92 and 97 having internal threads formed on the inner peripheral surfaces thereof. The thimbles 93 and 98 are connected to the outer peripheral surfaces of the sleeves 92 and 97 so as to be rotatable. By rotating the thimbles 93 and 98, the spindles 91 and 96 are moved back and forth in the axial direction with respect to the sleeves 92 and 97 by an amount corresponding to the pitch of the screw. In this configuration example, the thread pitch of the spindles 91 and 96 and the sleeves 92 and 97 is set to 250 μm, and the spindle 91 and 96 and the sleeves 92 and 97 provide a precise rotational linear motion conversion mechanism using a screw mechanism. It is composed. The micrometer heads 90 and 95 have scales 94 and 99 indicating the feed amounts of the spindles 91 and 96, respectively. As the scales 94 and 99, first scales 94a and 99a engraved on the outer peripheral surfaces of the sleeves 92 and 97 at a predetermined pitch in the axial direction, and first scales 94a and 99a engraved on the outer peripheral surfaces of the thimbles 93 and 98 at a predetermined pitch in the circumferential direction. Two scales 94b and 99b and verniers 94c and 99c which are engraved at a predetermined pitch in the circumferential direction are provided on the outer peripheral surfaces of the sleeves 92 and 97. By referring to the scales 94 and 99, the feed amounts of the spindles 91 and 96 can be read in units of 1 μm. The reference method of the scales 94 and 99 is the same as that of a general micrometer head. The tips of the spindles 91 and 96 are formed in a spherical shape.

  The holders 100 and 105 are formed with through-holes extending in the front-rear direction and having an internal thread formed on the inner peripheral surface. The spindles 91 and 96 are screwed into the through-holes from the front side, and both micrometer heads 90 and 95 are inserted. Is retained. The linear movement side micrometer head 90 has the end of the spindle 91 in contact with the front end surface of the linear movement plate 82, and the swing side micrometer head 95 has the end of the spindle 91 having a tapered surface 83 e of the swing plate 83. Abut.

  Further, a groove extending in the front-rear direction is formed on the upper surface of the side portion of each through-hole of the guide plate 81 and the lower surface of the side portion 82c of the linear motion plate 82, and when the linear motion plate 82 is mounted on the guide plate 81 Both grooves are aligned vertically to form a closed linear motion side spring accommodating space 86a. In this spring accommodating space 86a, a linear motion side compression spring 87a for urging the linear motion plate 82 forward is disposed, whereby the front end surface of the linear motion plate 82 is placed on the spindle 91 of the linear motion side micrometer head 90. The abutted state is maintained.

  Grooves extending in the left and right directions are formed in the upper surface of the front portion 82a of the linear motion plate 82 and the lower surface of the front portion 82b of the swing plate 83, and the upper surface of the side portion 82c of the linear motion plate 82 and the side portion 83c of the swing plate 83 are formed. A groove extending vertically is formed on the lower surface, and when the swing plate 83 is mounted on the direct acting plate 82, the two swing side spring accommodating spaces 86b, 86c is formed. A first oscillating side compression spring 87b for urging the oscillating plate 83 to the left is disposed in a first oscillating side spring accommodating space 86b extending left and right through the front portions 82b, 83b of both plates 82, 83. Thus, the state in which the tapered surface 83e of the swing plate 83 is in contact with the spindle 96 of the swing side micrometer head 95 is maintained. A second swing side compression spring 87c for biasing the swing plate 83 upward is disposed in a second swing side spring accommodating space 86c extending in the front and rear directions of the plates 82 and 83. Thus, the state in which the engaging groove 83d is engaged with the first guide pin 84 is maintained.

  When the printer head 4 having the above configuration is attached to the guide member 110, the head top portions 72 a and 72 a of the adjustment screw 72 of the feed mechanism 70 of the first position adjustment mechanism 60 are exposed on the left and right outer sides of the slide portion 41, and the head holding portion 46. The cylindrical portions 91b and 96b of the fine movement screw portions of both the micrometer heads 90 and 95 of the second position adjusting mechanism 80 are exposed on the front side of the second position adjusting mechanism 80.

  When the thimble 93 of the direct acting side micrometer head 90 is rotated and the feed amount of the spindle 91 is increased, the front end surface of the direct acting plate 82 is pressed backward. As a result, the linear movement plate 82 is moved backward together with the inkjet head 50 held by the swing plate 83 attached to the upper surface against the urging force of the linear movement side compression spring 87a. At this time, the oscillating side micrometer head 95 held by the oscillating side holder 105 on the linear motion plate 82 is also moved rearward together with the oscillating plate 83, and is moved within the upper surface of the linear motion plate 82 of the inkjet head 50. The slope never changes. Further, when the feed amount of the spindle 91 of the linear motion micrometer head 90 is decreased, the linear motion plate 82 is moved forward together with the swinging plate 83 by the urging force of the linear motion compression spring 87a. The state where the front end surface of the linear motion plate 82 is in contact with the portion is maintained. Thus, when the inkjet head 50 is moved back and forth, the feed amount of the spindle 91 per rotation is set to 250 μm, and the amount of forward and backward movement of the linear movement plate 82 with respect to the rotation operation amount is very small. By referring to 94, the amount of movement of the linear motion plate 82 can be accurately determined. For this reason, the inkjet head 50 can be easily set to a target position with respect to the front and rear, and the displacement of each inkjet head 50 in the front and rear can be easily eliminated.

  Further, when the thimble 98 of the swing side micrometer head 95 is rotated and the feed amount of the spindle 96 is increased, the tapered surface 83e of the swing plate 83 is pressed backward. Since the taper surface 83e receives this rearward pressing force, the swinging motion in which the engagement groove 83d is engaged with the first guide pin 84 by the action of the second swinging side compression spring 87c is maintained. The plate 83 is oscillated toward the left rear side on the linear motion plate 82 with the first guide pin 84 as a fulcrum against the urging force of the first oscillating side compression spring 87b. At this time, the linear movement plate 82 does not rotate with the swinging plate 83 because the guide pins 84 and 85 and the long holes 81b and 81c are fitted. Further, even when a force that moves backward is applied, the linear motion plate 81 is biased forward by the linear motion compression spring 87a and is in contact with the tip of the spindle 91 of the linear motion micrometer head 90. Retained. For this reason, only the inclination in the upper surface of the linear motion plate 82 of the inkjet head 50 can be adjusted by the operation of the oscillation-side micrometer head 95. Since the end portion of the spindle 96 is formed into a spherical shape, the swing plate 83 is reliably driven according to the rotation operation without generating a clearance between the tapered surface 83e and the tip end portion of the spindle 96. Can do. Further, when the feed amount of the spindle 96 is decreased, the swing plate 83 is moved forward rightward with the first guide pin 84 as a fulcrum by the urging force of the first and second swing side compression springs 87b and 87c. The taper surface 83e of the rocking plate 83 is held in contact with the end portion of the spindle 96. In the same manner as the linear motion micrometer head 90 described above, the inclination of the ink jet head 50 can be easily adjusted, and each ink jet head 50 can be easily set in a state where it extends in parallel in the front-rear direction and is aligned in the left-right direction. Can do.

  As described above, when the plurality of inkjet heads 50 are aligned so as to extend in the front-rear direction without any front-back displacement, the print medium M is supported on the upper surface 3 a of the stage 3 while maintaining the plane accuracy by negative pressure suction. Therefore, since the upper surface 3a of the stage 3 and the opening surface 50a of the inkjet head 50 are in parallel, the facing distance between each ink ejection hole 51 and the printing medium M becomes uniform, and the printing accuracy is impaired. Ink-jet printing is performed. In particular, when the adjustment is made so that the row direction of the ink ejection holes 51 is directed back and forth as described above, the opening surface 50a of the inkjet head 50 is inclined forward and backward with respect to the upper surface 3a of the stage 3. It is necessary not to.

  When the amount of insertion into the second piece receiving groove 42b is increased by rotating the left and right adjusting screws 72, the sliding taper piece 62 resists the urging force of the first spring 63 inside the second piece containing groove 42b. Then, the fixed taper piece 61 is drawn forward by the wedge action, and the swing bracket 43 is pressed forward. As a result, the urging force of the second spring 64 causes the swing bracket 43 to separate the upper end portion of the flat plate portion 42a from the flat plate portion 42b of the slider base 42 with the pin 45 engaged with the lower end as a support shaft. It is swung forward against this. At this time, the swing bracket 43 slidably contacts the front end surface 61 b of the fixed taper piece 61 with the front end inner surface 43 c of the first piece receiving groove 43 b, filling the play space formed above the fixed taper piece 61. Oscillates while being guided by the long hole 61c and the bolt 66. As described above, when the swing bracket 43 is tilted forward, both the head holding portions 46 are tilted forward, and the inkjet head 50 can be tilted so that the forward tilt angle is increased.

  On the other hand, when the amount of insertion into the second piece receiving groove 42b is reduced by the rotation operation of the adjusting screw 62, the sliding taper piece 62 is urged by the first spring 63 to move left and right in the second piece receiving groove 42b. The state in which the left and right outer surfaces are in contact with the tip of the adjustment screw 62 is maintained. Further, the sliding taper piece 62 is slid to the left and right outside as described above, and is urged by the second spring 64 to urge the swing bracket 43 toward the rear, so that the pin 45 is used as a support shaft. Thus, the upper end portion of the flat plate portion 42a is swung rearward so that the upper end portion of the flat plate portion 42a approaches the flat plate portion 42a of the slider base 42. Further, at this time, the swing bracket 43 has a play that has been formed below the fixed taper piece 61 with the front end inner surface 43 c of the first piece receiving groove 43 b slidably contacting the front end surface 61 b of the fixed taper piece 61. The fixed taper piece 61 is pressed backward as the second spring 64 is urged while oscillating while filling the space. Thereby, the state where both the taper surfaces 61a and 62a are aligned is maintained. As described above, when the swing bracket 43 is swung rearward, both the head holding portions 46 are tilted rearward, and the inkjet head 50 can be tilted so that the rearward tilt angle is increased.

  When the rotation operation of the adjusting screw 72 is stopped, the urging force of the first spring 63 is supported by the adjusting screw 72, and is urged rearward by the swinging bracket 43 by the second spring 64, and is thus pressed rearward. The fixed taper piece 61 is supported by the slider base 42 via the sliding taper piece 62. Thereby, the swing bracket 43 is stopped, and the ink jet head 50 can be set at a desired position.

  Note that if the insertion amounts of the adjustment screws 72 of the first position adjustment mechanism 60 provided separately on the left and right are different, the swing bracket 43 may be twisted left and right. The left and right relative movement of the moving bracket 43 with respect to the fixed taper piece 61 is restricted by the long hole 61 c and the bolt 66. Therefore, this twist is suppressed, and the swing bracket 43 can swing back and forth accurately.

  As described above, in the printer device 1 of this configuration example, the slide portion 41 of the carriage 40 is configured by the slider base 42 and the swing bracket 43, and the swing position of the swing bracket 43 is set by the first position adjustment mechanism 60. The inclination angle before and after the inkjet head 50 can be adjusted. For this reason, the opening surface 50 a of the ink ejection hole 51 of the inkjet head 50 can be made parallel to the upper surface 3 a of the stage 3 without increasing the processing accuracy of many members. As a result, it is possible to provide the printer device 1 in which the spacing between the ink ejection holes 51 and the printing medium M is set to be uniform and the predetermined printing accuracy is maintained without increasing the cost.

  The first position adjusting mechanism 60 swings the swing bracket 43 using the wedge action of the two taper pieces 61 and 62, the pressing force of the feed mechanism 70, and the biasing force of the springs 63 and 64. The flat plate portions 42a and 43a of the slider base 42 and the swing bracket 43 are opposed to each other in the front-rear direction. And the fixed taper piece 61 and the sliding taper piece 62 of the 1st position adjustment mechanism 60, the 1st spring 63, etc. are inside the piece accommodation grooves 42b and 43b formed in the opposing surface of each flat plate part 42a and 43a. Contained. As described above, the constituent members of the first position adjusting mechanism 60 are built in the slider base 42 and the swing bracket 43, so that the size of the periphery of the printer head 4 is not increased when the first position adjusting mechanism 60 is provided. .

  Further, the fixed taper piece 61 provided to be controlled to move left and right with respect to the swing bracket 43 has a front end surface 61b opposite to the taper surface 61a formed in a semicircular shape in a side sectional view. The front end inner surface 43c of the first piece accommodating groove 43b in which the fixed taper piece 61 is accommodated is also formed in a semicircular shape in a side sectional view. In addition, play spaces are formed above and below the fixed taper piece 61. Therefore, when the fixed taper piece 61 is moved back and forth and the swing bracket 43 swings, the front end inner surface 43 c of the second piece receiving groove 43 b fills the front end surface 61 b of the fixed taper piece 61 while filling the space for play. The rocking bracket 43 can be smoothly swung and can be swung smoothly.

  The second position adjusting mechanism 80 is configured by vertically stacking a linear motion plate 82 that is moved back and forth and a swing plate 83 that holds the inkjet head 50 and swings within the upper surface of the linear motion plate 82. Has been. For this reason, the printer head 4 that can easily eliminate the displacement of the inkjet head 50 in the front-rear direction and can be easily set in a state of extending in parallel in the front-rear direction is reduced in size particularly in the left-right direction in which the inkjet head 50 is aligned. can do.

  At this time, the swinging plate 83 is stacked above the linear motion plate 82, and one of the two guide pins 84 and 85 projecting downward to guide the positioning of the linear motion plate 82 and the back-and-forth movement. The (first guide pin 84) protrudes upward, and a portion protruding above the guide pin 84 is used as a fulcrum for the swing of the swing plate 73. Since the members having different functions are integrated, the number of parts can be reduced and the second position adjusting mechanism 80 can be downsized.

  In addition, the direct acting side and swing side micrometer heads 90 and 95 are set to have a very small amount of feed relative to the rotational operation amount, and are optimal for fine adjustment of the direct acting plate 82 and the swing plate 83. . In addition, the feed amount of the spindles 91 and 96 can be determined by referring to the scale. For this reason, the thimbles 93 and 98 are unexpectedly rotated, and the inkjet head 50 is moved to an unexpected place, or maintenance is performed. Even when the printer head 4 is reassembled for re-assembly and the like, the ink-jet head 50 can be easily returned to the original position.

  The thimbles 93 and 98 of the direct acting and swinging micrometer heads 90 and 95 are both provided on the front side with respect to the head holding portion 46, so that the operability is improved and the working efficiency is improved. Further, by providing the thimbles 93 and 98 so as to be integrated on one surface as described above, the operation member may be omitted from the upper surface side of the bottom plate 47a of the head bracket 47, and the printer head 4 can be reduced in size. . The linear motion plate 82 and the swing plate 83 are stacked one above the other, and further, the swing plate 83 is formed so as to be thicker in the vertical direction, so that the vertical length of the taper surface 83e is largely secured accordingly. For this reason, the thimble 98 of the swinging micrometer head 95 is disposed so as to be offset upward with respect to the thimble 93 of the direct acting micrometer head 90. Therefore, even if the thimbles 93 and 98 of both the micrometer heads 90 and 95 are integrated on one surface, it is possible to easily recognize which of the micrometer heads 90 and 95 is the thimble 93 or 98 due to the structure. Therefore, the possibility of erroneous operation is reduced.

1 is a schematic configuration diagram of a printer apparatus according to the present invention. It is a left view of the printer head of the printer apparatus. It is a front view of the printer head. It is a top view of the printer head. It is a bottom view of the head holding part of the printer head. It is a disassembled perspective view of the 1st position adjustment mechanism with which the said printer head is equipped. It is a top view of the 2nd position adjustment mechanism with which the said printer head is equipped. It is a sectional side view of the 2nd position adjustment mechanism with which the said printer head is equipped. It is a side view of the micrometer head provided in the said 2nd position adjustment mechanism.

Explanation of symbols

M Print medium 1 Printer device 3 Stage 4 Printer head 40 Carriage 41 Slide portion 42 Slider base 42a Flat plate portion 42b Second frame receiving groove 43 Swing bracket 43a Flat plate portion 43b First frame receiving groove 43c Front end inner surface 45 Pin 46 Head Holding portion 50 Inkjet head 50a Opening surface 51 Ink ejection hole 60 First position adjusting mechanism 61 Fixed taper piece 61a Tapered surface 61b Front end surface 62 Sliding taper piece 62a Tapered surface 63 First spring 64 Second spring 70 Feed mechanism 110 Guide Element

Claims (3)

A support member for supporting a portion to be printed on the print medium;
A guide member provided to extend left and right above the support member;
An inkjet head having a plurality of ink ejection holes for ejecting ink to the print medium;
A slide portion provided movably in the left and right directions along the guide member, and a carriage that is attached to the slide portion and includes a head holding portion that holds the inkjet head with the plurality of ink ejection holes directed downward. In a printer device configured to include:
The slide part is
A base member supported by the guide member so as to be movable left and right;
A swing member attached to the base member so as to be swingable back and forth around a horizontal axis;
A printer apparatus comprising: a position adjusting mechanism that swings the swing member to adjust a swing position of the swing member. The base member and the swing member each have a flat plate portion opposed to the front and rear,
The position adjusting mechanism is
A first taper piece having a first taper surface and housed in a first groove formed in the flat plate portion of the swinging member and fixed to the left and right;
A second taper surface is provided, and the second taper surface is aligned with the first taper surface in a second groove formed in the flat plate portion of the base member, and is slidable left and right. A second taper piece housed in
A feed mechanism that is provided on a side of the flat plate portion of the base member and presses the second taper piece inwardly in the left and right directions in the second groove;
A first urging member that urges the second taper piece to the left and right outside in the second groove;
A second urging member that urges the flat plate portion of the swing member in a direction to approach the flat plate portion of the base member;
2. The printer device according to claim 1, wherein the second taper piece slides to move the first taper piece back and forth and swing the swinging member back and forth.   An outer surface of the first taper piece opposite to the first taper surface and an inner surface of the first groove facing the outer surface on the opposite side are formed in an arc shape in a side view. The printer device according to claim 2.

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