CN201784265U - Medium driving device - Google Patents
Medium driving device Download PDFInfo
- Publication number
- CN201784265U CN201784265U CN2010205120825U CN201020512082U CN201784265U CN 201784265 U CN201784265 U CN 201784265U CN 2010205120825 U CN2010205120825 U CN 2010205120825U CN 201020512082 U CN201020512082 U CN 201020512082U CN 201784265 U CN201784265 U CN 201784265U
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- Prior art keywords
- medium
- support frame
- gas permeable
- annular gas
- roller
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- Handling Of Sheets (AREA)
Abstract
The application discloses a medium driving device comprising a support frame, a power plant, a driving roller, a tensioning roller, a ring-shaped air-permeable belt and an air suction box, wherein the power plant is fixed on the support frame; the driving roller is rotatably fixed on the support frame, and is connected with the power plant and driven by the power plant; the axis of the tensioning roller is in parallel to that of the driving roller and the tensioning roller is fixed on the support frame by a tightening part; the ring-shaped air-permeable belt is sheathed on the driving roller and the tensioning roller; and the air suction box is fixed on the support frame, positioned at the inner side of the ring shape of the ring-shaped air-permeable belt and contacted with the bottom of the upper side of the ring-shaped air-permeable belt. When the medium driving device is used for printing and transmitting medium, corrugation, large extending and deformation, indentation and the like of the medium can not be caused onto, thus improving the printing quality.
Description
Technical field
The application relates to print field, particularly relates to a kind of medium drive device.
Background technology
Traditional air brushing printer generally adopts driven roller and contact roller as medium drive device.Fig. 1 is the side view of traditional air brushing printer medium drive unit, and as shown in Figure 1, compressor arm 103 1 ends are fixing rotationally, and the other end is provided with contact roller 102, and under the effect of spring 104, medium 108 is pressed between driven roller 101 and the contact roller 102.When driven roller 101 rotations, under the effect of frictional force, drive medium 108 and move.Contact roller 102, compressor arm 103 and spring 104 are formed hold-down mechanism.In driven roller 101 both sides, medium 108 is supported by preceding supporting plate 105 and rear supporting plate 106 respectively, and printing head unit 107 is positioned at preceding supporting plate 105 tops.When medium 108 is flexible media, also be provided with strainer in preceding supporting plate 105 lower right sides, make medium 108 between hold-down mechanism and strainer, keep certain force of strain, convenient printing ejection head unit 107 prints on medium 108.As shown in Figure 2, be the front view of traditional air brushing printer medium driving mechanism, driven roller 101 and contact roller 102 are continuous distributed or interrupted the distribution vertically.
By existing air brushing printer medium drive unit is studied, the applicant finds that there is following defective in existing air brushing printer medium drive unit:
1, be under the flexible material situation at medium; undesired or be subjected to other resistance or external force is done the time spent when strainer work; as shown in Figure 3; media above driven roller 101 feedings and the preceding supporting plate 105 can not in time be removed synchronously; will cause that medium is wrinkling; influence print quality, when serious even can cause product rejection or cause mechanical disorder.
2, be under the flexible material situation at medium, if be subjected to big tensile force, medium will produce certain elongation strain, influences print quality.
3, when medium be that rigid material and medium are thicker and when softer, under the effect of contact roller thrust, medium can produce certain plastic deformation at thickness direction, as shown in Figure 4, stay the impression of driven roller 101 and contact roller 102 at dielectric surface, the quality of product is printed in influence, can not be accepted by the client when serious, causes returning goods.
The utility model content
In view of this, the embodiment of the present application provides a kind of medium drive device, may cause the relatively poor problem of print quality to solve existing air brushing printer medium drive unit.
To achieve these goals, technical scheme is as follows:
A kind of medium drive device comprises:
Bracing frame;
Be fixed on the power set on the support frame as described above;
Be rotatably mounted on the support frame as described above driven roller that links to each other with described power set and driven by described power set;
Axis parallels with described driven roller axis, and is fixed on idler roller on the support frame as described above by the degree of tightness parts;
Be set in the annular gas permeable band on described driven roller and the idler roller;
Be fixed on the support frame as described above, be positioned at the annular inboard of described annular gas permeable band, and the aspiration box of touching with the upper portion bottom connection of described annular gas permeable band.
Preferably, be positioned at place, described idler roller two ends on the support frame as described above and be provided with two screwed holes.
Preferably, described degree of tightness parts comprise:
Two slide blocks that are rotatably connected with described idler roller two ends;
Be separately positioned in described two screwed holes, and two elasticity bolts that fix with described two slide blocks respectively.
Preferably, described annular gas permeable band is that filiform weaves endless belt that forms or the endless belt that has several air-vents.
Preferably, described aspiration box is provided with exhaust tube, and described aspiration box and the contacted one side of described annular gas permeable band are provided with several suction holes.
Compared with prior art, this medium drive device of providing of the embodiment of the present application has the following advantages:
1, for the medium of flexible material, because the effect of pressure, the feasible medium that is positioned at the print area of aspiration box upper surface can all be sucked on the annular gas permeable band, when printing, medium in this zone can not produce wrinkling, therefore can not influence print quality or cause product rejection because of wrinkling;
2, the medium of flexible material does not need tensile force or only needs less tensile force in print area, and therefore when printing, the elongation strain of medium is less, and is less to the influence of print quality;
3, owing to there is not the thrust of contact roller, thicker and when softer when rigid media, also can not produce the such plastic deformation of contact roller impression at the medium upper surface.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the side view of traditional air brushing printer medium drive unit;
Fig. 2 is the front view of traditional air brushing printer medium drive unit;
Fig. 3 is the traditional air brushing printer medium schematic diagram when wrinkling;
Schematic diagram when Fig. 4 is traditional air brushing printer rigid material medium compressive deformation;
The vertical view of the medium drive device that Fig. 5 provides for the embodiment of the present application;
The side view of the medium drive device that Fig. 6 provides for the embodiment of the present application;
Fig. 7 is the embodiment of the present application medium pressure pressure analysis schematic diagram one;
Fig. 8 is the embodiment of the present application medium pressure pressure analysis schematic diagram two.
The specific embodiment
In order to make those skilled in the art person understand technical scheme among the application better, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
The vertical view of the medium drive device that Fig. 5 provides for the embodiment of the present application.
As shown in Figure 5, this medium drive device comprises: driven roller 1, idler roller 2, aspiration box 3, annular gas permeable band 4, bracing frame, power set (not shown), wherein: bracing frame comprises side plate 5 and side plate 6, and the other parts of bracing frame are not shown in the drawings.
Annular gas permeable band 4 is set on driven roller 1 and the idler roller 2, is evenly distributed with several pores 41 on it, and regulates the distance between driven roller 1 and the idler roller 2, can be so that annular gas permeable band 4 is tensioning state and keeps suitable tension force.Annular gas permeable band 4 is the endless belt that can breathe freely well known to those of ordinary skill in the art, can weave the endless belt that forms for filiform, can also be for having the endless belt of several air-vents.
The side view of the medium drive device that Fig. 6 provides for the embodiment of the present application.
As shown in Figure 6,11 is medium among the figure, and 12 is printhead unit, printhead unit 12 be positioned at air-breathing district on the aspiration box 3 directly over.Before printing, with medium 11 be placed into annular gas permeable band 4 above, and the aspirating hole of aspiration box 3 is connected with negative pressure device, negative pressure in the aspiration box 3 will affact by the pore 41 on suction hole 31 on the aspiration box 3 and the annular gas permeable band 4 on the lower surface 112 of medium 11 like this, and the pressure p2 on medium lower surface 112 is less than the pressure p1 of atmosphere to medium upper surface 111, be p2＜p1, as shown in Figure 7.The pressure p=p1-p2 that it is synthetic, and direction is that upper surface 111 by medium points to lower surfaces 112, as shown in Figure 8.Therefore under the effect of pressure p, medium 11 is positioned at the upper surface 42 that the zone directly over the air-breathing district on the aspiration box 3 tightly is attached to annular gas permeable band 4.When driven roller 1 rotates, drive annular gas permeable band 4 and rotate, the upper surface 42 and the medium 11 of annular gas permeable band 4 are compressed the bigger frictional force of generation by pressure p, move together thereby can drive medium 11.
In the embodiment of the present application, when the coefficient of friction when the deadweight of medium between heavier and medium and the annular gas permeable band is big, only rely on the frictional force of the deadweight generation of medium just can drive medium motion, at this moment the exhaust tube on the aspiration box can not link to each other with negative pressure device.
Compared with prior art, this medium drive device of providing of the embodiment of the present application has the following advantages:
1, for the medium of flexible material, because the effect of pressure, the feasible medium that is positioned at the print area of aspiration box upper surface can all be sucked on the annular gas permeable band, when printing, medium in this zone can not produce wrinkling, therefore can not influence print quality or cause product rejection because of wrinkling;
2, the medium of flexible material does not need tensile force or only needs less tensile force in print area, and therefore when printing, the elongation strain of medium is less, and is less to the influence of print quality;
3, owing to there is not the thrust of contact roller, thicker and when softer when rigid media, also can not produce the such plastic deformation of contact roller impression at the medium upper surface.
The above only is the application's a preferred implementation, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be conspicuous to one skilled in the art, and defined herein General Principle can realize under the situation of the spirit or scope that do not break away from the application in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (5)
1. a medium drive device is characterized in that, comprising:
Bracing frame;
Be fixed on the power set on the support frame as described above;
Be rotatably mounted on the support frame as described above driven roller that links to each other with described power set and driven by described power set;
Axis parallels with described driven roller axis, and is fixed on idler roller on the support frame as described above by the degree of tightness parts;
Be set in the annular gas permeable band on described driven roller and the idler roller;
Be fixed on the support frame as described above, be positioned at the annular inboard of described annular gas permeable band, and the aspiration box of touching with the upper portion bottom connection of described annular gas permeable band.
2. device according to claim 1 is characterized in that, is positioned at place, described idler roller two ends on the support frame as described above and is provided with two screwed holes.
3. device according to claim 2 is characterized in that, described degree of tightness parts comprise:
Two slide blocks that are rotatably connected with described idler roller two ends;
Be separately positioned in described two screwed holes, and two elasticity bolts that fix with described two slide blocks respectively.
4. device according to claim 1 is characterized in that, described annular gas permeable band is that filiform weaves endless belt that forms or the endless belt that has several air-vents.
5. device according to claim 4 is characterized in that described aspiration box is provided with exhaust tube, and described aspiration box and the contacted one side of described annular gas permeable band are provided with several suction holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205120825U CN201784265U (en) | 2010-09-01 | 2010-09-01 | Medium driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205120825U CN201784265U (en) | 2010-09-01 | 2010-09-01 | Medium driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201784265U true CN201784265U (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205120825U Expired - Fee Related CN201784265U (en) | 2010-09-01 | 2010-09-01 | Medium driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201784265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896916A (en) * | 2011-07-27 | 2013-01-30 | 富士胶片株式会社 | Medium conveyance apparatus and image forming apparatus |
| CN103241010A (en) * | 2013-05-15 | 2013-08-14 | 济南优诺思喷印设备有限公司 | Printing platform with air suction device |
-
2010
- 2010-09-01 CN CN2010205120825U patent/CN201784265U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896916A (en) * | 2011-07-27 | 2013-01-30 | 富士胶片株式会社 | Medium conveyance apparatus and image forming apparatus |
| CN102896916B (en) * | 2011-07-27 | 2016-05-25 | 富士胶片株式会社 | Media delivery apparatus and image processing system |
| CN103241010A (en) * | 2013-05-15 | 2013-08-14 | 济南优诺思喷印设备有限公司 | Printing platform with air suction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN RUNTIANZHI DIGITAL EQUIPMENT CO., LTD. Free format text: FORMER NAME: RUNTIANZHI IMAGE TECHNOLOGY CO., LTD., SHENZHEN CITY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518110 hi tech Industrial Park, Guanlan Road, Guanlan Road, Shenzhen, Guangdong, Baoan District Patentee after: Shenzhen Runtianzhi Digital Equipment Co., Ltd. Address before: 518110 hi tech Industrial Park, Guanlan Road, Guanlan Road, Shenzhen, Guangdong, Baoan District Patentee before: Runtianzhi Image Technology Co., Ltd., Shenzhen City |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20190901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |