Heating drum and ink jet printing apparatus having the same
阅读说明:本技术 加热鼓及具有该加热鼓的喷墨打印装置 (Heating drum and ink jet printing apparatus having the same ) 是由 井泽秀男 大山耕一 佐藤和茂 今秀俊 于 2018-11-27 设计创作,主要内容包括:本发明提供一种即使利用高温进行加热后也能抑制鼓圈部相对于主体部错开的加热鼓及具有该加热鼓的喷墨打印装置。本发明为一种加热鼓及具有该加热鼓的喷墨打印装置,该加热鼓为引导并烘干长条状的媒介而具备圆筒状的主体部、安装在该主体部的两端的圆盘状的鼓圈部、以及安装在该鼓圈部的轴芯,其特征在于,在主体部的内周面的缘部设置有向周向延伸的缺口部,在比缺口部更靠近内部侧的主体部的内周面设置有向周向延伸的槽部,缺口部与槽部互相平行,鼓圈部嵌入缺口部中,爪部由限位件固定在鼓圈部,该爪部的钩挂部宽松地嵌合在槽部中。(The invention provides a heating drum capable of inhibiting a drum ring part from being staggered relative to a main body part even after being heated at high temperature and an ink jet printing device with the heating drum. The present invention provides a heating drum and an ink jet printer having the same, wherein the heating drum is provided with a cylindrical main body part for guiding and drying a long-strip-shaped medium, a disc-shaped drum ring part mounted at both ends of the main body part, and a shaft core mounted on the drum ring part, and is characterized in that a notch part extending in the circumferential direction is provided at the edge part of the inner circumferential surface of the main body part, a groove part extending in the circumferential direction is provided on the inner circumferential surface of the main body part closer to the inner side than the notch part, the notch part is parallel to the groove part, the drum ring part is embedded in the notch part, a claw part is fixed on the drum ring part by a stopper, and a hook part of the claw part is loosely.)
1. A heating drum having a cylindrical main body for guiding and drying a long medium, a disc-shaped drum ring portion attached to both ends of the main body, and a shaft core attached to the drum ring portion,
a notch portion extending in the circumferential direction is provided at an edge portion of the inner circumferential surface of the main body portion,
a groove portion extending in the circumferential direction is provided on an inner peripheral surface of the main body portion on the inner side of the notch portion,
the notch part and the groove part are parallel to each other,
the drum ring part is embedded into the notch part,
the claw portion is fixed to the drum ring portion by a stopper,
the hook portion of the claw portion is loosely fitted in the groove portion.
2. The heated drum of claim 1,
the side surface of the main body portion and the surface of the drum ring portion are located on the same plane.
3. A heated drum as claimed in claim 1 or 2,
further, narrow notch portions extending in the circumferential direction are provided at the edge portion of the inner peripheral surface of the main body portion, and the notch portions and the narrow notch portions are alternately arranged,
the width of the narrower notch portion is less than the width of the notch portion,
a plurality of drum rim side notches are provided at the drum rim portion at regular intervals,
an end portion of the rim portion where the rim-side cutout portion is not provided is fitted into the cutout portion,
the end portion of the drum rim portion provided with the drum rim-side notch portion is fitted into the narrow notch portion.
4. A heated drum as claimed in any one of claims 1 to 3,
a plurality of hole parts are arranged on the drum ring part,
the claw portion is fixed to the drum ring portion from the hole portion by a stopper.
5. A heated drum as claimed in claim 4,
the ratio of the sum of the surface areas of the plurality of holes in the surface area of the drum ring portion is 30% or more.
6. An ink-jet printing apparatus, characterized in that,
the disclosed device is provided with:
a printing section for printing while conveying a long medium; and
a drying device for drying a print body printed on the medium by the printing unit while conveying the print body,
the printing section is composed of a plurality of recording heads for ink-jet printing,
the drying device has the heating drum according to any one of claims 1 to 5.
7. Inkjet printing apparatus according to claim 6,
the heating drums are arranged in an upstream side and a downstream side.
Technical Field
The present invention relates to a heating drum and an ink jet printing apparatus having the same, and more particularly, to a heating drum capable of suppressing a displacement of a rim portion with respect to a main body portion as much as possible even after heating at a high temperature, and an ink jet printing apparatus having the same.
Background
In the field of industrial machinery, a heating drum is used as a device for drying a long medium.
The heating drum is guided to wind the medium and heats the surface thereof, thereby drying the medium in contact therewith.
As the heating drum, for example, a drum drying device is known which includes: a cylindrical drum portion rotatably supported and rotated by winding the base material; an engaging portion disposed in an inner cavity of the drum portion; and a heating unit having an engaged portion detachably engaged with the engaging portion (see, for example, patent document 1).
Disclosure of Invention
Problems to be solved by the invention
In general, a conventional heating drum including a drum-type drying device described in
In recent years, in order to increase the conveyance speed of a medium, the main body is heated by a high temperature in the heating drum.
In this way, in the heating drum, the main body may expand due to heat, and the rim may be displaced from the main body. Further, if the rim portion is displaced with respect to the main body portion, the center of gravity may be displaced, and the rotation of the heating drum may become irregular, and sometimes the rim portion may even fall off the main body portion.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a heating drum that can suppress displacement of a rim portion with respect to a main body portion even after heating at a high temperature, and an ink jet printing apparatus including the heating drum.
Means for solving the problems
The present inventors have conducted extensive studies to solve the above problems, and as a result, have found that the above problems can be solved by fitting a rim portion into a cutout portion of a main body portion and loosely fitting a claw portion fixed to the rim portion into a groove portion of the main body portion, and have completed the present invention.
The invention of
In accordance with aspect 6 of the present invention, there is provided an inkjet printing apparatus comprising: a printing section for printing while conveying a long medium; and a drying device for drying a print body printed on a medium by the printing unit while conveying the print body, wherein the printing unit includes a plurality of recording heads for inkjet printing, and the drying device includes the heating drum according to any one of
Claim 7 of the present invention is the inkjet printing apparatus according to claim 6, wherein the heating drums are arranged in a row on an upstream side and a downstream side.
ADVANTAGEOUS EFFECTS OF INVENTION
In the heating drum of the present invention, the drum rim portion is fitted into the cutout portion of the main body portion, and the hook portion of the claw portion fixed to the drum rim portion is loosely fitted into the groove portion, so that the drum rim portion can be prevented from being displaced in the width direction with respect to the main body portion as much as possible even after heating at a high temperature.
Further, since the lug portion is used to attach the drum rim portion so as to sandwich the projection portion between the notch portion and the groove portion of the main body portion, the main body portion and the drum rim portion are not directly connected by using the stopper. Therefore, the stopper is not loosened or removed due to the expansion of the body portion.
In this case, the side surface of the main body and the surface of the drum rim are positioned on the same plane, thereby improving the work safety during maintenance.
In the heating drum of the present invention, when the notch portions and the narrower notch portions are arranged alternately at the edge portion of the inner peripheral surface of the main body portion, and when the rim portion is provided with the plurality of rim-side notch portions at a constant interval, the end portion of the rim portion not provided with the rim-side notch portions is fitted into the notch portions, the end portion of the rim portion provided with the rim-side notch portions is fitted into the narrower notch portions, and the stepped portion is formed by the notch portions and the narrower notch portions arranged alternately at the edge portion of the inner peripheral surface of the main body portion, thereby restricting the rotation of the rim portion with respect to the main body portion. Therefore, not only the displacement of the rim portion in the width direction with respect to the main body portion but also the displacement of the rim portion in the rotational direction (direction of the surface perpendicular to the width direction) with respect to the main body portion can be suppressed.
In the heating drum of the present invention, the weight of the rim portion can be reduced by providing the rim portion with the plurality of holes. For example, from the viewpoint of weight reduction, it is preferable that the ratio of the sum of the surface areas of the plurality of holes in the surface area of the rim portion is 30% or more.
Further, by providing the hole portion, the inside of the rim portion can be visually checked, and in some cases, the inside maintenance may be performed from the hole portion in a state where the rim portion is attached to the main body portion.
Further, the claw portion is fixed to the drum ring portion by the stopper from the hole portion, so that the claw portion can be easily attached to the drum ring portion without the stopper projecting outward.
In the inkjet printing apparatus according to the present invention, since the drying device includes the heating drum, even after heating at a high temperature, the displacement of the rim portion with respect to the main body portion of the heating drum can be suppressed.
Further, by arranging the heating drums on the upstream side and the downstream side, the time for drying the transported print body can be sufficiently extended.
Drawings
Fig. 1 is a perspective view showing a heating drum of the present embodiment.
Fig. 2 is a horizontal sectional view showing the heating drum of the present embodiment.
Fig. 3(a) is an enlarged view of the edge of the main body of the heating drum of the present embodiment as viewed from the inside of the main body.
Fig. 3(B) is a sectional view taken along the plane a-a of fig. 3 (a).
Fig. 3(C) is a sectional view taken along the plane B-B of fig. 3 (a).
Fig. 4 is a front view showing a drum ring portion of the heating drum of the present embodiment.
Fig. 5 is a front view in the Y direction of fig. 1.
FIG. 6(A) is a sectional view taken along the plane C-C in FIG. 5.
Fig. 6(B) is a sectional view taken along the plane D-D of fig. 5.
Fig. 7 is a perspective side view showing one embodiment of the inkjet printing apparatus of the present invention.
Description of the symbols
1: main body part
1 a: notch part
1 b: narrow gap part
1 c: trough part
13: heating ring
13 a: power supply terminal
13 b: thermocouple
13 c: thermostat device
2: drum ring part
21, 22: end part
2 a: drum rim side notch part
2 b: limiting part hole for drum ring
3: shaft core
3 a: rotary connector for power supply
3 b: rotary connector for signal
4: claw part
4 a: hook part
4 b: pressing part
4 c: limiting part hole for claw
5: position limiting piece
61: paper feeding part
62: printing part
63: recovery part
70: paper drawing roller
71: tension roller
D: heating drum
H: drying device
H1, H2, H5, H6: distance between two adjacent plates
H3, H4: width of
I: ink jet printing apparatus
K1: 1 st joint part
K2: 2 nd joint part
P: step portion
S: hole part
X: printing body
X1: medium
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings as needed. In the drawings, the same elements are denoted by the same reference numerals, and redundant description thereof is omitted. Unless otherwise noted, the positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Further, the dimensional scale of the drawings is not limited to the illustrated scale.
First, the heating drum D of the present invention will be explained.
Fig. 1 is a perspective view showing a heating drum D of the present embodiment.
As shown in fig. 1, the heating drum D of the present embodiment includes: a
In the heating drum D, the
The heating drum D can dry the medium in contact therewith by guiding the long medium to be wound around the heating drum D and heating the surface thereof.
Here, the medium is not particularly limited, and a strip-like material such as paper, film, fabric, nonwoven fabric, or the like can be used as the medium.
Further, specific examples of drying the medium are: drying for shaping media, drying processed media, drying printed media, and the like.
The
The material of the
The outer peripheral surface of the
Fig. 2 is a horizontal sectional view of the heating drum D of the present embodiment.
As shown in fig. 2, a
The
Further, 3 heating rings 13 are provided in line with the width direction of the
Each
Therefore, the heating coils 13 can set and adjust the temperature independently of each other.
In addition, for example, when the width of the medium is small, the power supply of the
Fig. 3(a) is an enlarged view of the edge of the main body of the heating drum D of the present embodiment as viewed from the inside of the main body, fig. 3(B) is a cross-sectional view taken along the plane a-a of fig. 3(a), and fig. 3(C) is a cross-sectional view taken along the plane B-B of fig. 3 (a).
As shown in fig. 3(a), 3(B), and 3(C), the
In the
Therefore, the
In the
The
The
Returning to fig. 1, the
Fig. 4 is a front view showing a drum ring portion of the heating drum D of the present embodiment.
As shown in fig. 4, the
The material of the
In the heating drum D, a plurality of holes S are provided in the
In view of the above effect, the sum of the areas of the plurality of holes S in the area of the
A plurality of rim-
In the
Returning to fig. 2, the
The material of the
Both sides of the
In the heating drum D, a power
The power supply terminals 13a of the heating coils 13 are connected to the power
The
Next, a connection structure between the
Fig. 5 is a front view in the Y direction of fig. 1.
As shown in fig. 5, the
Further, in the heating drum D, the 1 st joint K1 and the 2 nd joint K2 are different in length in the circumferential direction. As described above, by connecting the 1 st joint K1 and the 2 nd joint K2 having different circumferential lengths, the sizes of the holes S of the
In the
Here, the
Fig. 6(a) is a sectional view taken along the plane C-C of fig. 5, and fig. 6(B) is a sectional view taken along the plane D-D of fig. 5.
As shown in fig. 6(a), in the 1 st joint portion K1 of the heating drum D, the
Then, the
Here, the
In the
Further, the
At this time, in the width direction of the
The distance H5 between the side surface of the
The diameter of the stopper hole for
Therefore, the
As described above, in the heating drum D, the
The 2 nd joint K2 is the same as the 1 st joint K1 except that the length in the circumferential direction is different, and therefore, the description thereof is omitted.
On the other hand, as shown in fig. 6(B), in the heating drum D, the
At this time, as described above, since the stepped portion P is formed by the notched
In the heating drum D of the present embodiment, the side surface of the
Accordingly, the work safety during maintenance can be further improved.
In the heating drum D, as described above, the
Next, an ink jet printing apparatus I according to the present invention will be described.
Fig. 7 is a perspective side view showing an embodiment of an inkjet printing apparatus I of the present invention.
As shown in fig. 7, the inkjet printing apparatus I of the present embodiment includes: a
The drying device H includes heating drums D arranged in an upstream side and a downstream side.
In the inkjet printing apparatus I, the
The ink is filled in each of the ink jet printing heads in accordance with colors such as YMCK.
In the ink jet printing apparatus I, the
The tension of the print medium X is detected by a
Further, the transport path of the print body X under the
In the inkjet printing apparatus I, since the drying device H includes the heating drum D, even after heating at a high temperature, the displacement of the
Further, by arranging the heating drums D on the upstream side and the downstream side, the time for drying the transported print body X can be sufficiently extended.
While preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments.
In the heating drum D of the present embodiment, the outer peripheral surface of the
Alternatively, the uneven processing may be performed instead of providing the thin grooves on the outer peripheral surface of the
In the heating drum D of the present embodiment, 3 heating rings 13 are provided in line on the inner peripheral surface of the
The number of the heating coils 13 arranged in a row is not particularly limited.
In the heating drum D of the present embodiment, the
In the heating drum D of the present embodiment, the
[ industrial applicability ]
The heating drum D of the present invention can be used as a device for drying while guiding a long-sized medium. According to the heating drum D, even after heating at a high temperature, the displacement of the
The ink jet printing apparatus I of the present invention can be used as an apparatus for printing characters or graphics by applying ink to a medium. According to the ink jet printer I, since the heating drum D is provided, the displacement of the
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