JP2008254222A - Gap adjusting device, recording device, liquid ejecting device - Google Patents

Abstract

A gap adjusting device provided between a first member and a second member for adjusting a gap between the first member and the second member is further reduced in cost.
A gap adjusting device includes a base member and a spacer. The base member is formed by integrally forming a base 27f, a supporting portion 27g, and a flexible portion 27e with a resin material. The flexible portion 27e forms an insertion hole 27a into which the spacer 28 is inserted, and has elasticity so that the gap adjustment direction dimension of the insertion hole 27a changes as the spacer 28 is inserted. When the spacer 28 is inserted into the insertion hole 27a, the thickness of the spacer 28 in the gap adjustment direction changes along the insertion direction. Therefore, the insertion hole 27a is expanded in the gap adjustment direction, and the base 27f is The gap between the fixed first member and the second member carried by the carrying portion 27g is adjusted.
[Selection] Figure 4

Description

  The present invention relates to a gap adjusting device that is provided between a first member and a second member and adjusts a gap between the first member and the second member. The present invention also relates to a recording apparatus and a liquid ejecting apparatus including a gap adjusting device that adjusts a gap between a guide member that guides a carriage and a base frame to which the guide member is attached.

  Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a copying machine, and a facsimile machine that discharges ink from the recording head to perform recording on a recording medium. And a device that ejects a liquid corresponding to the application from a liquid ejecting head corresponding to the ink jet recording head to an ejected medium corresponding to a recording medium, and adheres the liquid to the ejected medium. .

  In addition to the recording head, as a liquid ejecting head, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, and an electrode material (conductive paste) used for forming an electrode such as an organic EL display or a surface emitting display (FED) Examples thereof include an ejection head, a bioorganic matter ejection head used for biochip production, and a sample ejection head as a precision pipette.

  In a recording apparatus or a liquid ejecting apparatus typified by a printer, the recording head is supported by a guide shaft extending in the scanning direction of the recording head (hereinafter referred to as “main scanning direction”) and is provided on a carriage that reciprocates while being guided. It is done.

Further, as shown in Patent Document 1, the carriage may be provided so that the parallelism between the head surface of the recording head and the paper is regulated by being supported by two guide means.
JP 2002-79720 A

  In the recording apparatus described in Patent Document 1, since the frame member restricts the tendency of the carriage to rotate around the guide shaft by its own weight, the gap adjustment for adjusting the gap between the frame member and the base to which the carriage is attached is performed. By introducing the mechanism, the parallelism between the head surface of the recording head and the paper can be adjusted.

  Here, when the frame member is extremely long in the scanning direction of the recording head as in a large-sized printer, since the deflection of the central portion becomes significant only by supporting both ends of the frame member, the frame member is fixed at a predetermined span. Need to support. However, in this case, since it is necessary to provide the gap adjusting mechanism for each support position, further cost reduction of the gap adjusting mechanism is desired. Further, it is desired that the adjusted side (displacement side) is stably displaced in the gap adjustment direction during the gap adjustment while reducing the cost.

  Therefore, the present invention has been made in view of such a situation, and the object thereof is provided between the first member and the second member, and the gap between the first member and the second member. It is another object of the present invention to provide a gap adjusting device in which the adjusted side is stably displaced in the gap adjusting direction at the time of gap adjustment.

  In order to solve the above-described problem, a first aspect of the present invention is provided between a first member and a second member, and a gap between the first member and the second member is provided. A gap adjusting device for adjusting, comprising: a spacer member; and an insertion hole into which the spacer member is inserted, wherein the spacer member has a shape in which the thickness in the gap adjusting direction changes along the inserting direction. In addition, the periphery of the insertion hole has elasticity, and the gap adjustment direction dimension of the insertion hole changes with the insertion of the spacer member, and the inserted spacer member is pressed.

  According to this aspect, the gap adjustment device includes a spacer member whose thickness changes in the insertion direction, and a member in which an insertion hole whose gap adjustment direction dimension changes as the spacer member is inserted is formed. Since the gap adjustment can be executed by adjusting the insertion amount of the spacer member, the structure of the gap adjustment device can be simplified and the cost can be reduced. Also, since the periphery of the insertion hole has elasticity and the insertion hole itself presses the spacer member when the spacer is inserted, it is necessary to separately provide a pressing means for pressing the spacer member. Therefore, the gap adjusting device can be further simplified in structure and constructed at a low cost.

  According to a second aspect of the present invention, in the gap adjusting apparatus according to the first aspect, the insertion hole is formed in a base member fixed to the first member, and the second hole is inserted in the insertion hole. A member-side surface is configured to displace in the gap adjusting direction to apply a pressing force to the spacer member, and the spacer member is inserted into the insertion hole when the insertion hole is inserted into the insertion hole. The side pressed against the surface of the two members is formed by a surface parallel to the insertion direction of the spacer member, and the opposite side is formed by a surface inclined with respect to the insertion direction. Along with the insertion into the insertion hole, the surface on the second member side in the insertion hole gives a pressing force perpendicular to the surface parallel to the insertion direction of the spacer member.

  According to this aspect, when the spacer is inserted, the side displaced in the gap adjustment direction around the insertion hole (the side to be pushed up) is perpendicular to the plane parallel to the insertion direction of the spacer member ( That is, a pressing force (parallel to the gap adjustment direction) is applied. Therefore, when the spacer is inserted, the side displaced around the insertion hole receives a force in the direction parallel to the displacement direction, that is, the gap adjustment direction, from the spacer. For this reason, a force other than the gap adjustment direction is not applied to the displacement side (the pushed-up side) around the insertion hole, and the displacement side (second member) during the gap adjustment is displaced outside the gap adjustment direction. This can be prevented and the gap can be adjusted stably.

  A third aspect of the present invention includes a guide member extending in a scanning direction of a recording head that performs recording on a recording medium, and a guided portion supported by the guide member, and is supported by the guide member and the guide. A carriage that is guided in the scanning direction by a member, a gap adjusting device that is provided between a base frame to which the guide member is attached and the guide member, and adjusts a gap between the base frame and the guide member; The gap adjusting device includes a spacer member and an insertion hole into which the spacer member is inserted, and the spacer member changes in thickness in the gap adjusting direction along the inserting direction. And the circumference of the insertion hole has elasticity, and the gap adjustment direction dimension of the insertion hole with the insertion of the spacer member. There change, characterized by pressing the inserted said spacer member.

  According to this aspect, the recording apparatus that performs recording on the recording medium includes the gap adjustment apparatus having the same configuration as the gap adjustment apparatus according to the first aspect. An effect can be obtained.

  According to a fourth aspect of the present invention, in the recording apparatus according to the third aspect, the insertion hole is formed in a base member fixed to the base frame, and the surface on the side of the guide member in the insertion hole. Is configured to apply a pressing force to the spacer member by being displaced in the gap adjusting direction, and when the spacer member is inserted into the insertion hole, the surface of the insertion hole on the side of the guide member The side pressed by the spacer member is formed by a surface parallel to the insertion direction of the spacer member, and the opposite side is formed by a surface inclined with respect to the insertion direction, and the spacer member is inserted into the insertion hole. The surface on the guide member side in the insertion hole applies a pressing force perpendicular to a surface parallel to the insertion direction of the spacer member.

  According to this aspect, since the recording apparatus that performs recording on the recording medium includes the gap adjustment apparatus having the same configuration as the gap adjustment apparatus according to the second aspect, the same as the second aspect. An effect can be obtained.

  A fifth aspect of the present invention includes a guide member extending in a scanning direction of a liquid ejecting head that ejects liquid onto an ejected medium, and a guided portion supported by the guide member, and is supported by the guide member. A gap adjusting device that is provided between the guide guided in the scanning direction by the guide member, the base frame to which the guide member is attached, and the guide member, and adjusts the gap between the base frame and the guide member. The gap adjusting device includes a spacer member and an insertion hole into which the spacer member is inserted, and the spacer member has a thickness in the gap adjusting direction in the inserting direction. And the circumference of the insertion hole is elastic, and the gap of the insertion hole is increased with the insertion of the spacer member. Adjustment dimension is changed, characterized in that for pressing the inserted said spacer member.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5. 1 is an external perspective view of an ink jet printer (hereinafter referred to as “printer”) 1 as an example of a “recording apparatus” or “liquid ejecting apparatus” according to the present invention, FIG. 2 is a side view of the main part, and FIG. 3 is a guide. 4 is a perspective view of the gap adjusting device 26 according to the present invention, FIG. 5 is a sectional side view of the same, and FIG. 4A is a state before the spacer 28 is inserted. (B) is a figure which shows the state at the time of insertion of the spacer 28. FIG.

  First, the configuration of the printer 1 will be outlined with reference to FIGS. 1 and 2. The printer 1 is a large-sized printer capable of recording up to a roll paper (recording medium) P having a relatively large width such as JIS standard A0 size, B0 size, etc., and includes a roll paper supply unit 3 and a recording execution unit. 4 is provided with a main body portion 2 provided with 4 and a paper discharge receiving portion 5.

  The main body 2 is provided on an upper portion of a support column 8 erected on the base 9 and has a discharge port 6 for discharging the recorded roll paper P obliquely downward. An opening 7 of the stacker 10 is located below the discharge port 6, and the recorded roll paper P is discharged from the discharge port 6 toward the opening 7 and received by the stacker 10.

  The roll paper supply unit 3 is configured to be capable of storing a roll paper roll (hereinafter referred to as “roll”) R, and the roll paper P is fed out from the roll R and supplied obliquely downward to the recording execution unit 4 that executes recording. Is done. In FIG. 2, reference numeral 15 denotes a roll paper holder, a spindle (not shown) for inserting the shaft core of a roll R having a hollow shaft core, and flanges (disc-shaped members shown) provided at both ends thereof. The roll R is set in the roll paper holder 15. When the roll paper is supplied, the roll paper P is supplied to the downstream side by rotating the roll paper holder 15 by a drive mechanism (not shown).

  The recording execution unit 4 is provided on the upstream side of the recording head 17, the recording head 17 that ejects (injects) ink as liquid onto the roll paper P, the platen 25 that is disposed opposite to the recording head 17, and the roll paper. A transport driving roller 23 that transports P to the downstream side and a transport driven roller 24 that is in pressure contact therewith are provided.

  The recording head 17 is provided on the carriage 16, and the carriage 16 includes a guide shaft 18 that extends in the scanning direction of the recording head 17 (main scanning direction: front and back direction in FIG. 2), and a guide plate 19 that similarly extends in the main scanning direction. , And moves in the main scanning direction by receiving the power of a motor (not shown). Further, the carriage 16 is supported by the guide shaft 18 and the guide plate 19, whereby the parallelism between the head surface of the recording head 17 and the roll paper P is regulated.

  Note that a paper suction unit (not shown) is provided on the downstream side of the recording head 17, and the paper suction unit is placed in a restricted state so that the roll paper P does not float on the downstream side of the recording head 17. The recording quality is prevented from deteriorating due to the rising of the roll paper P.

The general configuration of the printer 1 has been described above, and the gap adjusting device 26 according to the present invention will be described below with reference to FIGS.
2 and 3, reference numeral 12 denotes a base frame as a “first member” extending in the main scanning direction, and a plurality of support members 30 are attached to the base frame 12 with a substantially constant span in the main scanning direction. The guide shaft 18 is supported. A plurality of gap adjusting devices 26 are attached with a substantially constant span in the main scanning direction like the support member 30, and the guide plate 19 as a “second member” is supported by the gap adjusting device 26. .

  The gap adjusting device 26 includes a base member 27 and a spacer 28. By sliding the spacer 28 with respect to the base member 27, a height position for supporting the guide plate 19 (the upper surface of the base frame 12 and the guide plate 19). Can be adjusted for each gap adjusting device 26. Here, the height position for supporting the guide plate 19 is a position in a direction perpendicular to the flat sliding surface 19a of the guide plate 19.

  Next, the carriage 16 is provided with a bearing portion 16a. The guide shaft 18 passes through the bearing portion 16a, so that the carriage 16 is supported by the guide shaft 18. Further, the guide plate 19 is disposed at a position spaced apart from the guide shaft 18 on the upstream side in the roll paper conveyance direction, and the sliders 31 and 32 are arranged on the carriage 16 so as to correspond to the position of the guide plate 19. Is provided.

  The sliders 31 and 32 are arranged so as to sandwich the guide plate 19 and come into sliding contact with the guide plate 19 as the carriage 16 moves in the main scanning direction. Here, due to the weight of the carriage 16, the carriage 16 tends to turn counterclockwise in FIG. 2 about the guide shaft 18, and the guide plate 19 stops this turning tendency. It has become. Therefore, the parallelism between the recording surface of the roll paper P and the recording head 17 is adjusted by adjusting the height position of the guide plate 19 (gap between the upper surface of the base frame 12 and the guide plate 19) by the gap adjusting device 26. It is possible.

  The base member 27 and the spacer 28 constituting the gap adjusting device 26 have shapes as shown in FIGS. In the base member 27, a base 27f fixed to the base frame 12, a support portion 27g for supporting the guide member 19, and a flexible portion 27e forming the periphery of the insertion hole 27a for inserting the spacer 28 are integrally formed of a resin material. Formed.

  The flexible portion 27e forms an insertion hole 27a into which the spacer 28 is inserted, and the dimension of the insertion hole 27a (direction perpendicular to the insertion direction of the spacer 28 (vertical direction in FIG. 5): hereinafter referred to as “gap adjustment direction”. Is provided with elasticity so as to change (push out) with the insertion of the spacer 28.

  The spacer 28 has a shape in which the thickness in the gap adjustment direction changes along the insertion direction (left-right direction in FIG. 5), and more specifically, as shown in FIG. 5, the upper side of the insertion hole 27a in the cross-sectional view. The surface (surface on the frame member 19 side) 27b is formed by a surface 28a parallel to the insertion direction, and the opposite side (lower side) is formed by a surface 28b inclined with respect to the insertion direction. Is formed.

  Similarly, in the insertion hole 27a, the side facing the surface 28a of the spacer 28 is formed by a surface 27b parallel to the insertion direction of the spacer 28 in a sectional view, and the opposite side (lower side) is in the insertion direction. The surface 27c is inclined with respect to the surface.

  As shown in FIG. 4, a guide groove 27d extending in the insertion direction of the spacer 28 is formed on the upper surface of the insertion hole 27a, and a guide rib 28c extending in the insertion direction of the spacer 28 is formed in the spacer 28. Thus, the guide rib 28c enters the guide groove 27d, whereby the position of the spacer 28 in the insertion hole 27a (the position in the direction orthogonal to the insertion direction and the gap adjustment direction) is determined.

  In the gap adjusting device 26 configured as described above, when the spacer 28 is inserted into the insertion hole 27a, the thickness of the spacer 28 in the gap adjustment direction changes along the insertion direction. As shown in FIG. 5A to FIG. 5B, the height dimension of the base member 27 is changed from the initial value H as shown in FIG. 5A to FIG. 5B. It changes to a larger value H ′. Accordingly, this makes it possible to adjust the height position of the guide plate 19 (the gap between the upper surface of the base frame 12 and the guide plate 19).

  Since the height position of the guide plate 19 can be adjusted by adjusting the insertion amount of the spacer 28 in this way, a gap adjusting device that adjusts the height position of the guide plate 19 with a simple structure and at low cost is provided. It can be configured. Further, since the periphery of the adjustment hole 27a is formed by the flexible portion 27e, elasticity is provided, and when the spacer 28 is inserted, the insertion hole 27a itself presses the spacer 28. It is not necessary to separately provide pressing means for pressing, and the gap adjusting device 26 can be further simplified in structure and can be configured at low cost.

  Further, when the spacer 28 is inserted into the insertion hole 27a, the side that is pressed against the surface 27b of the insertion hole 27a is formed by a surface 28a that is parallel to the insertion direction of the spacer 28, and the opposite side is formed with respect to the insertion direction. Formed by the inclined surface 28b. A surface 27b on the guide member 19 side in the insertion hole 27a is configured to be displaced in the gap adjustment direction to apply a pressing force to the spacer 28, and is formed by a surface 27b parallel to the insertion direction of the spacer 28. As the spacer 28 is inserted, a pressing force substantially perpendicular to the surface 28a of the spacer 28 (that is, parallel to the gap adjusting direction) is applied.

  Therefore, when the spacer 28 is inserted, the surface 27b on the side that is displaced vertically in the insertion hole 27a receives force from the spacer 28 in a direction (vertical direction in FIG. 5) straight in the displacement direction (gap adjustment direction). As a result, when the spacer 28 is inserted, the carrying portion 27g carrying the guide plate 19 is displaced straight in the gap adjustment direction. Therefore, it is possible to prevent the guide plate 19 carried by the carrying portion 27g from being displaced in the direction other than the gap adjustment direction, and to perform the gap adjustment stably.

1 is an external perspective view of a printer according to the present invention. FIG. 3 is a side view of a main part of the printer according to the invention. The perspective view which shows the support state of a guide shaft and a guide plate. The perspective view of the gap adjustment device concerning the present invention. It is a sectional side view of the gap adjustment device concerning the present invention, (A) is before a spacer insertion, and (B) is a figure showing a state at the time of spacer insertion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inkjet printer, 2 main-body part, 3 roll paper supply part, 4 recording execution part, 5 discharge receiving part, 6 roll paper discharge port, 7 opening part, 8 support | pillar, 9 base, 10 roll paper stacker, 12 base frame, 15 Roll paper holder, 16 Carriage, 17 Recording head, 18 Guide shaft, 19 Guide plate, 23 Transport drive roller, 24 Transport driven roller, 25 Platen, 26 Adjusting means, 27 Base member, 28 Spacer, 30 Support member, 31, 32 Slider, P roll paper, R roll paper roll

Claims (5)

A gap adjusting device that is provided between a first member and a second member and adjusts a gap between the first member and the second member,
A spacer member;
An insertion hole into which the spacer member is inserted,
The spacer member has a shape in which the thickness in the gap adjustment direction changes along the insertion direction,
The circumference of the insertion hole has elasticity, the gap adjustment direction dimension of the insertion hole changes with the insertion of the spacer member, and presses the inserted spacer member.
A gap adjusting device. 2. The gap adjusting device according to claim 1, wherein the insertion hole is formed in a base member fixed to the first member, and a surface on the second member side of the insertion hole is the gap. It is configured to apply a pressing force to the spacer member by displacing in the adjustment direction,
When the spacer member is inserted into the insertion hole, the side that is pressed against the surface of the insertion member on the second member side is formed by a surface parallel to the insertion direction of the spacer member, and The opposite side is formed by a surface inclined with respect to the insertion direction,
With the insertion of the spacer member into the insertion hole, the surface on the second member side in the insertion hole gives a pressing force perpendicular to the surface parallel to the insertion direction of the spacer member.
A gap adjusting device. A guide member extending in the scanning direction of a recording head for recording on a recording medium;
A carriage having a guided portion supported by the guide member, supported by the guide member and guided in the scanning direction by the guide member;
A gap adjusting device that is provided between a base frame to which the guide member is attached and the guide member and adjusts a gap between the base frame and the guide member;
The gap adjusting device includes a spacer member,
An insertion hole into which the spacer member is inserted,
The spacer member has a shape in which the thickness in the gap adjustment direction changes along the insertion direction,
The circumference of the insertion hole has elasticity, the gap adjustment direction dimension of the insertion hole changes with the insertion of the spacer member, and presses the inserted spacer member.
A recording apparatus. The recording apparatus according to claim 3, wherein the insertion hole is formed in a base member fixed to the base frame, and a surface of the guide member in the insertion hole is displaced in an adjustment direction of the gap. Configured to apply a pressing force to the spacer member,
When the spacer member is inserted into the insertion hole, the side pressed against the surface of the insertion member on the guide member side is formed by a surface parallel to the insertion direction of the spacer member, and the opposite side is formed. Formed by a surface inclined with respect to the insertion direction;
With the insertion of the spacer member into the insertion hole, the surface on the guide member side in the insertion hole gives a pressing force perpendicular to the surface parallel to the insertion direction of the spacer member.
A recording apparatus. A guide member extending in the scanning direction of a liquid ejecting head that ejects liquid onto the ejection target medium;
A carriage having a guided portion supported by the guide member, supported by the guide member and guided in the scanning direction by the guide member;
A gap adjusting device that is provided between a base frame to which the guide member is attached and the guide member and adjusts a gap between the base frame and the guide member;
The gap adjusting device includes a spacer member,
An insertion hole into which the spacer member is inserted,
The spacer member has a shape in which the thickness in the gap adjustment direction changes along the insertion direction,
The circumference of the insertion hole has elasticity, the gap adjustment direction dimension of the insertion hole changes with the insertion of the spacer member, and presses the inserted spacer member.
A liquid ejecting apparatus.

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