CN110949022A - Device for transporting printing material - Google Patents
Device for transporting printing material Download PDFInfo
- Publication number
- CN110949022A CN110949022A CN201910916951.6A CN201910916951A CN110949022A CN 110949022 A CN110949022 A CN 110949022A CN 201910916951 A CN201910916951 A CN 201910916951A CN 110949022 A CN110949022 A CN 110949022A
- Authority
- CN
- China
- Prior art keywords
- belt
- conveyor belt
- preparation
- printing material
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/08—Conveyor bands or like feeding devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/007—Conveyor belts or like feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0085—Using suction for maintaining printing material flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/06—Advancing webs by friction band
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
- B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
- B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
- B65H5/023—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between a pair of belts forming a transport nip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/25—Driving or guiding arrangements
- B65H2404/252—Details of idler roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/25—Driving or guiding arrangements
- B65H2404/256—Arrangement of endless belt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/26—Particular arrangement of belt, or belts
- B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/26—Particular arrangement of belt, or belts
- B65H2404/264—Arrangement of side-by-side belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
Abstract
The invention relates to a device for conveying a printing material (3) in the form of a sheet or web, comprising: a conveyor belt (4) on which the printing material (3) is placed during transport, and a first pressure belt (1) which presses the printing material (3) against the conveyor belt (4), wherein a second pressure belt (2) is provided, wherein the two pressure belts (1,2) surround the conveyor belt (4), wherein the width (BN) of each pressure belt (1,2) is smaller than the width of the conveyor belt (4), and wherein each pressure belt (1,2) presses a different edge (5) of the printing material (3) against the conveyor belt (4), wherein each pressure belt (1,2) swivels along a swiveling path which is endless in the following cycle: the path of revolution of the endless loop of the conveyor belt (4) lies within this path of revolution.
Description
Technical Field
The invention relates to a device for transporting a printing material in the form of a sheet or a web, comprising a conveyor belt on which the printing material rests during transport and a first pressure belt (Niederhalteband) which presses the printing material against the conveyor belt, wherein a second pressure belt is provided, which surrounds the conveyor belt (umschlingen), each pressure belt having a width which is smaller than the width of the conveyor belt and each pressure belt pressing a different edge of the printing material onto the conveyor belt.
Background
An apparatus is described in JPH11349198A and JP2013234056A, respectively, which has a conveyor belt and a pressure belt, which each have an endless loop (endlos) path of revolution (Umlaufbahn) which is outside the path of revolution of the endless loop of the conveyor belt.
JP2013241246A also describes a device without a pressure belt surrounding the conveyor belt.
GB 1150257 a describes an apparatus suitable for feeding sheets to a printing station. When a sheet is positioned between the two belts, the sheet cannot be printed. Therefore, the apparatus is not suitable for use in a printing station.
Disclosure of Invention
The object of the invention is to provide a device which is suitable for use in a printing station.
This object is achieved by an apparatus for transporting a printing material in the form of a sheet or web, comprising a transport belt on which the printing material rests during transport and comprising a first pressure belt which presses the printing material against the transport belt, wherein a second pressure belt is provided which surrounds the transport belt, each pressure belt having a width which is smaller than the width of the transport belt and each pressure belt presses a different edge of the printing material onto the transport belt, characterized in that each pressure belt is pivoted along such an endless loop of pivoting paths: the path of revolution of the endless loop of the conveyor belt lies within this path of revolution.
The advantage of the device according to the invention is that it is possible for the device to print the print substrate in such a way that the print substrate passes between the two pressure belts during the transport of the print substrate on the conveyor belt. For example, an inkjet print head can eject ink onto a print substrate in a manner that passes between the two pinch belts, while the print substrate is on the conveyor belt and is pressed against the conveyor belt by the pinch belts at both edges of the print substrate.
Different modifications are possible:
the two pressure belts can be moved by means of a counterpart (Paare) consisting of guide units which guide the two pressure belts away from and towards each other.
The two pressure strips can have a first spacing from one another before they run into the respective counter part consisting of the guide unit and a second spacing from one another after they run out of the counter part consisting of the guide unit.
One of the two spaces (e.g., the second space) may be smaller than a format width (format) of the printing material, and the other space (the first space in the example) may be larger than the format width of the printing material.
Each guide unit may have a plurality of rollers guiding the respective pressing belts.
These rollers may be crowned (bombier).
Each guide unit may have a plurality of round bars guiding the respective compression bands.
These round bars can be arranged in a non-rotatable/non-rotatable manner (drehfest).
The round bar of each guide unit can be oriented in a non-parallel manner with respect to the rollers.
The spacing to be measured between the guide units of the respective counterparts formed by the guide units perpendicular to the running direction of the conveyor belt can be set adjustably along a track.
The conveyor belt may be a vacuum belt.
The vacuum belt can adsorb the compression belts.
Drawings
The improvement is also described by the following examples and figures, which show:
FIG. 1: a schematic view of a printing station for inkjet printing;
FIG. 2: a transport device of the printing station having a side view of the guide unit;
FIG. 3: an enlarged guide unit;
FIG. 4: a guide unit in a sectional view along line IV-IV; and
FIG. 5: a top view of the guide unit.
Detailed Description
The digital printing press comprises a transport device for a printing material 3, for example a sheet. The conveyor belt 4 of the transport device transports the printing material 3 past one or more printing heads 15, wherein these printing heads 15 print the printing material 3. These print heads 15 have nozzle surfaces that are sensitive to scratches and with which the print substrate 3 is not allowed to come into contact. In order to minimize the risk of contact, a first pressure belt 1 and a second pressure belt 2 are combined with the conveyor belt 4. These pressure strips 1,2 are designed as flat belts and prevent: the side edges 5 of the print substrate 3 rise upward from the transport belt 4 and touch the nozzle surfaces with their edges or corners and damage them. The first pressure belt 1 presses the edge 5 of the reference conveyor belt 4 on the left side of the direction of travel LR of the print substrate 3 against the conveyor belt 4, while the second pressure belt 2 presses the right edge 5 against the conveyor belt 4.
These pressure strips 1,2 each have a width BN which is smaller than the width BF of the conveyor belt 4. The width BF of the conveyor belt 4 is greater than the format width FB of the printing material 3. The pressure strips 1,2 run parallel to one another with a first spacing a1 in the first section and with a second spacing a2 in the second section. The first spacing a1 is greater than the second spacing a 2. In a second section, in which a smaller second distance a2 is provided, the pressure strips 1,2 come into contact with the print substrate 3. Each pressure belt 1,2 contacts the print substrate 3 in such a way that the lateral edges of the print substrate 3 are located between the two lateral edges of the pressure belt 1 or 2. In other words: in the contact plane (the drawing plane of fig. 5), the respective pressure belt 1 or 2 projects perpendicularly to the running direction LR beyond the print substrate 3. Each pressing belt 1,2 runs along such an endless-loop path of revolution: the path of revolution of the conveyor belt 4, which is likewise endless, is located within this path of revolution (seen laterally towards the conveyor belt, see fig. 2). In this case, the respective pressure belt 1,2 rests against the conveyor belt 4 in a first section with a large first distance a 1.
The conveyor belt 4 is configured as a vacuum belt with a hole-like structure. Through this hole-like structure, the vacuum box 16 sucks the printing material 3 onto the conveyor belt 4 for holding it stationary thereon. The vacuum box 16 is open towards the conveyor belt 4 and is attached to a vacuum generator, the conveyor belt 4 sliding with its inside past said vacuum box 16. A second section, in which the pressure strips 1,2 have a second spacing a2 from one another, is opposite the vacuum box 16. In the second section, the transport belt 4 sucks the pressure belts 1,2, to be precise strip-shaped regions of the pressure belts 1,2 that do not overlap the print substrate 3 and are located to the right and left of the print substrate 3. In this way, the static friction between the conveyor belt 4 and the pressure belts 1,2 is increased, so that the conveyor belt 4 can better drive the pressure belts 1,2 and can be driven by means of a friction lock. Advantageously, no motor is required for the press belts 1,2, which is inherent in itself, since the press belts 1,2 are driven by the same motor that drives the conveyor belt 4.
The first counterpart 6, which is formed by a tape guide unit, comprises a first guide unit 7 for guiding the first press belt 1 and a second guide unit 8 for guiding the second press belt 2. The second counterpart 9, which is formed by a tape guide unit, comprises a third guide unit 10 for guiding the first press belt 1 and a fourth guide unit 11 for guiding the second press belt 2. The two guide units 7,8 (or 10,11) of the respective counterpart 6,9 are constructed as mirror images of one another, the mirror axis being oriented along the running direction LR. The first counterpiece 6 follows the second counterpiece 9 in the direction of travel LR, wherein a second section is located between the two counterpieces 6,9, inside which the pressure strips 1,2 come into contact with the print substrate 3. The two guide units that guide the same press belt 1 (or 2) (i.e., the first guide unit 7 and the third guide unit 10 in the case of the first press belt 1 and the second guide unit 8 and the fourth guide unit 11 in the case of the second press belt 2) are likewise of mirror-image construction with respect to one another, wherein the mirror axis is oriented perpendicular to the running direction LR in the plane of the drawing in fig. 5.
As is shown in fig. 3 and 4 by way of example for the first guide unit 7, each guide unit 7,8,10,11 comprises four rollers 12 for deflecting the respective pressing belt. The rollers 12 are barrel-shaped and arched to center the pressing belt 1 and may also be designed for this purpose as a flanged disk (Bordscheiben). The rollers 12 have mutually parallel axes of rotation, which are also parallel to such axes: the conveyor belt 4 turns around these axes as it turns. The axes of rotation of the rollers 12 run parallel to the conveying plane defined by the conveyor belt 4 (the plane of the drawing in fig. 5) and perpendicular to the running direction LR.
In addition to this, each guide unit comprises two round rods 13, which round rods 13 are fastened together with the rollers 12 on the frame of the guide unit, wherein the rollers 12 are rotatably supported and the round rods 13 are arranged non-rotatably, the round rods 13 are very short rod piles (Stangenst ü mpfe) and can also be referred to as guide journals, the two round rods 13 have central axes 17 which are parallel to one another, the central axes 17 are oriented obliquely with respect to the rotational axis of the rollers 12, the two round rods 13 are enclosed in an S-shape by the compression band 1 and cause a misalignment of the compression band 1 in a direction parallel to the rotational axis of the rollers 12 (Versetzen).
The two guide units 7,8 (or 10,11) of the respective counterpart 6,9 consisting of the tape guide units can be adjusted away from and towards each other along the rail 14 on which they are supported. In this way, the distance AF between these guide units 7,8 (or 10,11) can be set as a function of the format width FB of the print substrate 3.
List of reference numerals
1 first compression band
2 second compression band
3 printing material
4 conveyor belt
5 edge of
6 first counterpart
7 first guide unit
8 second guide unit
9 second counterpart
10 third guide unit
11 fourth guide unit
12 roller
13 round bar
14 track
15 print head
16 vacuum box
17 central axis
A1 first interval
A2 second interval
Interval between AF guidance units
Width of BF transmission belt
Width of BN compacting belt
Width of FB layout
LR running direction
Claims (12)
1. An apparatus for conveying a printing material (3) in the form of a sheet or web, the apparatus comprising:
-a conveyor belt (4) on which the printing material (3) rests during transport, and
a first press belt (1) pressing a printing material (3) against the conveyor belt (4),
wherein a second pressing belt (2) is arranged,
the two pressing belts (1,2) wrap the conveyor belt (4),
the width (BN) of each pressing belt (1,2) is smaller than the width of the conveyor belt (4), an
Each press belt (1,2) presses a different edge (5) of the print substrate (3) onto the conveyor belt (4),
it is characterized in that the preparation method is characterized in that,
each pressing belt (1,2) rotates along the rotation track of such endless circulation: the path of revolution of the endless loop of the conveyor belt (4) lies within this path of revolution.
2. The apparatus as set forth in claim 1, wherein,
it is characterized in that the preparation method is characterized in that,
the two press belts (1,2) are guided by a counter-piece (6,9) consisting of guide units (7,8,10,11) which guide the two press belts (1,2) away from and towards each other.
3. The apparatus as set forth in claim 2, wherein,
it is characterized in that the preparation method is characterized in that,
the two pressure belts (1,2) have a first spacing (A1) from one another before they run into the respective counterparts (6,9) of the guide units (7,8,10,11), and have a second spacing (A2) from one another after they run out of the counterparts (6,9) of the guide units (7,8,10, 11).
4. The apparatus as set forth in claim 3, wherein,
it is characterized in that the preparation method is characterized in that,
one of the spaces (A2) is smaller than the format width (FB) of the printing material (3) and the other space (A1) is larger than the format width (FB) of the printing material (3).
5. The apparatus of any one of claims 2 to 4,
it is characterized in that the preparation method is characterized in that,
each guide unit (8,9,10,11) has a plurality of rollers (12) which guide the respective press belt (1, 2).
6. The apparatus as set forth in claim 5, wherein,
it is characterized in that the preparation method is characterized in that,
the roller (12) is crowned.
7. The apparatus of claim 5 or 6,
it is characterized in that the preparation method is characterized in that,
each guide unit (8,9,10,11) has a plurality of round rods (13) which guide the respective compression belt (1, 2).
8. The apparatus as set forth in claim 7, wherein,
it is characterized in that the preparation method is characterized in that,
the round bar (13) is arranged in a non-rotatable manner.
9. The apparatus of claim 7 or 8,
it is characterized in that the preparation method is characterized in that,
the round bar (13) of each guide unit (8,9,10,11) is oriented in a non-parallel manner with respect to the roller (12).
10. The apparatus according to any one of claims 2 to 9,
it is characterized in that the preparation method is characterized in that,
the spacing (AF) between the guide units (7,8,10,11) of the respective counterparts (6,9) formed by the guide units (7,8,10,11) to be measured perpendicular to the running direction (LR) of the conveyor belt (4) can be set along a track (14).
11. The apparatus of any one of claims 1 to 10,
it is characterized in that the preparation method is characterized in that,
the conveyor belt (4) is a vacuum belt.
12. The apparatus as set forth in claim 11, wherein,
it is characterized in that the preparation method is characterized in that,
the vacuum belt absorbs the pressing belts (1, 2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018216431 | 2018-09-26 | ||
| DE102018216431.2 | 2018-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110949022A true CN110949022A (en) | 2020-04-03 |
| CN110949022B CN110949022B (en) | 2023-02-10 |
Family
ID=69725663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910916951.6A Active CN110949022B (en) | 2018-09-26 | 2019-09-26 | Device for transporting printing material |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110949022B (en) |
| DE (1) | DE102019211840A1 (en) |
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| JPH09254468A (en) * | 1996-03-19 | 1997-09-30 | Mitsubishi Electric Corp | Thermal transfer printer |
| US6382850B1 (en) * | 1999-06-25 | 2002-05-07 | Eastman Kodak Company | Ink jet printer for photofinishing |
| US20060263113A1 (en) * | 2005-05-17 | 2006-11-23 | Canon Kabushiki Kaisha | Sheet-material transporting device and image forming apparatus |
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| JP2009173420A (en) * | 2008-01-25 | 2009-08-06 | Konica Minolta Holdings Inc | Belt conveying device and recording device |
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-
2019
- 2019-08-07 DE DE102019211840.2A patent/DE102019211840A1/en active Pending
- 2019-09-26 CN CN201910916951.6A patent/CN110949022B/en active Active
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| CN207224854U (en) * | 2017-07-25 | 2018-04-13 | 惠州市德钢机械有限公司 | A kind of box gluing machine Braille printing device |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102019211840A1 (en) | 2020-03-26 |
| CN110949022B (en) | 2023-02-10 |
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