CN221339966U - Ink-jet printing paper transfer unit - Google Patents
Ink-jet printing paper transfer unit Download PDFInfo
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- CN221339966U CN221339966U CN202323359118.7U CN202323359118U CN221339966U CN 221339966 U CN221339966 U CN 221339966U CN 202323359118 U CN202323359118 U CN 202323359118U CN 221339966 U CN221339966 U CN 221339966U
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- paper
- gripper
- printing
- transfer unit
- air suction
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- 238000007641 inkjet printing Methods 0.000 title claims abstract description 15
- 238000007639 printing Methods 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000001179 sorption measurement Methods 0.000 claims description 24
- 238000003825 pressing Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
Abstract
The utility model discloses an ink-jet printing paper conveying unit which comprises two gripper-free air suction rollers, wherein a printing platform is arranged between the two gripper-free air suction rollers, an ink-jet head is positioned above the printing platform, and a paper holding mechanism for holding paper on the surface of the platform is arranged at the printing platform. The utility model adopts two gripper-free air suction rollers as paper conveying units in jet printing operation, the gripper-free air suction rollers do not need to have larger diameters and gripper rows, the structural design is simple, the equipment manufacturing cost is greatly reduced, the high-precision positioning of paper in jet printing operation is maintained, the paper has no gripper mark, the integrity of printed products is ensured, meanwhile, the paper conveying stability is good, no fault node exists, and the high-speed smooth conveying of the paper is facilitated.
Description
Technical Field
The utility model belongs to the technical field of ink-jet printing machinery, and particularly relates to an ink-jet printing paper transfer unit.
Background
In the prior art, most of the digital inkjet printers for single sheets use cylinders to carry and transfer sheets of paper between units by gripper bars on a jet cylinder, transfer cylinder or transfer chain. The jet printing roller is used for bearing paper to finish jet printing operation, the ink jet head is arranged above the jet printing roller, and when the paper rotates to the lower part of the ink jet head along with the jet printing roller, the ink jet head performs jet printing operation on the paper. The cylinder containing the gripper bar has high positioning precision to paper, but has high manufacturing cost, complex installation structure, high failure rate of the gripper bar, and easy left gripper mark on the paper, which affects the integrity of the printing product.
In the prior art, an induced draft conveyor belt mode is adopted to bear paper to finish jet printing operation, but in the printing process, the positioning accuracy of the induced draft conveyor belt on the paper is poor, so that the printing quality of a printed product is affected.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model aims to provide the ink jet printing paper conveying unit which can realize accurate paper delivery without gripper bars, has low manufacturing cost and stable paper conveying.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the ink jet printing paper conveying unit comprises two gripper-free air suction rollers, a printing platform is arranged between the two gripper-free air suction rollers, the ink jet head is positioned above the printing platform, and a paper holding mechanism for holding paper on the surface of the platform is arranged at the printing platform.
As an optimized technical scheme, the gripper-free air suction roller comprises a roller body, more than two rows of air holes are formed in the surface of the roller body, air channels are respectively arranged in the roller body corresponding to the air holes, and the air channels are communicated with the corresponding air holes; the end part of the roller body is provided with a conducting piece in a matching way, the roller body and the conducting piece can rotate relatively, and a strong adsorption area is formed in the conducting piece; when the roller body rotates, each air channel sequentially passes through the strong adsorption area and is communicated with the strong adsorption area, and when the paper head of the paper passes through the strong adsorption area, the paper head is instantly adsorbed to the surface of the roller and is accurately positioned.
As a preferable embodiment, the paper holding mechanism is a negative pressure adsorption mechanism.
As an alternative solution, the paper holding mechanism is a paper pressing mechanism.
As an alternative technical scheme, the paper pressing mechanism is a paper pressing roller arranged at two ends of the printing platform.
As an alternative technical scheme, the paper pressing mechanism is a paper pressing wheel arranged at two ends of the printing platform.
As an alternative technical scheme, the paper pressing mechanism is a paper pressing belt arranged at two ends of the printing platform.
Compared with the prior art, the utility model has at least the following beneficial effects:
(1) By adopting the gripper-free air suction roller as a paper conveying unit in jet printing operation, when the paper heads of the single paper reach a strong adsorption area, the paper heads are subjected to a large negative pressure adsorption effect, can be instantaneously adsorbed to the surface of the roller and are accurately positioned, and the delivery effect of grippers is achieved; the gripper-free air suction roller has the advantages that gripper rows are not required to be arranged, larger diameter doubling is not required, structural design is simple, equipment manufacturing cost is greatly reduced, high-precision positioning of paper during jet printing operation is kept, no gripper mark exists on the paper, the integrity of printed products is guaranteed, meanwhile, the paper conveying stability is good, no fault node exists, and high-speed smooth transfer of the paper is facilitated.
(2) A printing platform is arranged between the two gripper-free air suction rollers, the ink jet head is positioned above the printing platform, and a paper holding mechanism for holding paper on the surface of the platform is arranged at the printing platform, so that the stretching evenness of the paper in the jet printing process can be fully ensured, floating or free of the paper is avoided, and the printing quality of a printed product is improved.
Drawings
The following drawings are only for purposes of illustration and explanation of the present utility model and are not intended to limit the scope of the utility model. Wherein:
FIG. 1 is a schematic view of a first embodiment of the present utility model;
Fig. 2 is a schematic structural view of a gripper-free suction drum in an embodiment of the present utility model;
FIG. 3 is a schematic view of the cross-sectional structure in the direction A-A in FIG. 2;
fig. 4 is a schematic structural diagram of a second embodiment of the present utility model.
Detailed Description
The utility model is further illustrated in the following, in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present utility model are described by way of illustration only. It is needless to say that the person skilled in the art realizes that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope.
Example 1
As shown in fig. 1, the ink jet printing paper transferring unit comprises two gripper-free air suction rollers, which are respectively defined as a first air suction roller 1 and a second air suction roller 2 for convenience of description, a printing platform 3 is arranged between the first air suction roller 1 and the second air suction roller 2, and an ink jet head 4 is positioned above the printing platform 3. The printing platform 3 is provided with a paper holding mechanism for holding paper on the surface of the platform. In this embodiment, the paper holding mechanism is a negative pressure adsorption mechanism, which can be realized by: the printing platform 3 is provided with the air suction holes 31, the air suction chamber 32 is arranged below the printing platform 3, the air suction chamber 32 is connected with the negative pressure fan, and micro negative pressure is formed in the air suction chamber 32 through the air suction of the negative pressure fan, so that the paper 5 is kept on the surface of the printing platform, the stretching evenness of the paper in the jet printing process can be fully ensured, the floating or free of the paper is avoided, and the printing quality of a printing product is improved.
The structure of the gripper-free suction cylinder will be described below taking the first suction cylinder 1 as an example. Referring to fig. 2 and 3, the gripper-free air suction roller comprises a roller body 11, wherein a plurality of rows of air holes 12 are formed in the surface of the roller body 11, the air holes 12 in the same row are uniformly distributed along the axial direction of the roller body 11, and the air holes 12 in different rows are annularly distributed along the peripheral surface of the roller body 11; air channels 13 are respectively arranged in the roller body 11 corresponding to the exhaust holes 12, the air channels 13 are communicated with the corresponding air holes 12, and the air channels 13 are positioned on the same peripheral surface; the end part of the roller body 11 is provided with a conducting piece 14 in a matching way, the roller body 11 and the conducting piece 14 can rotate relatively, and a strong adsorption area 15 is formed in the conducting piece 14; when the roller body 11 rotates, each air duct 13 sequentially passes through the strong adsorption area and is communicated with the strong adsorption area 15, the coverage area of the strong adsorption area 15 preferably only covers 1 to 3 air ducts, and the negative pressure value is preferably 60 to 100Kpa; the wind hole corresponding to the wind channel rotating to the powerful adsorption area 15 can form instant adsorption to the paper head reaching the powerful adsorption area, so that the paper head has a gripper seaming effect, and the paper head is adsorbed to the surface of the roller instantly and is accurately positioned under the action of large negative pressure adsorption.
The working principle of the utility model is as follows: when the paper head reaches the strong adsorption area of the first air suction roller 1, the paper head is instantaneously adsorbed to the surface of the roller and is accurately positioned; along with the continuous rotation of the first air suction roller 1, the paper head gradually breaks away from the strong adsorption area and enters the printing platform 3, the ink-jet head 4 above the printing platform 3 performs high-precision printing operation on the paper, the paper gradually reaches the second air suction roller 2 along the surface of the printing platform 3 under the driving of the first air suction roller 1, and when the paper head reaches the strong adsorption area of the second air suction roller 2, the paper head is adsorbed to the roller surface in an instant time again and is accurately positioned, so that the paper transfer of a printing operation link is completed; because no gripper is arranged, the paper has no gripper mark, the integrity of the printed matter is ensured, and meanwhile, the paper has high positioning precision and good paper conveying stability.
Example two
The present embodiment is basically the same in construction principle as the first embodiment, and the only difference is in the paper holding mechanism. Referring to fig. 4, in this embodiment, the paper holding mechanism is a platen roller 6 provided at both ends of the printing platform 3. Of course, the paper holding mechanism may also be configured as other paper pressing mechanisms such as a paper pressing wheel or a paper pressing belt, which all fall within the protection scope of the present utility model.
The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this utility model, and are intended to be within the scope of this utility model.
Claims (7)
1. The ink-jet printing paper transfer unit is characterized in that: the printing machine comprises two gripper-free air suction rollers, a printing platform is arranged between the two gripper-free air suction rollers, an ink jet head is positioned above the printing platform, and a paper holding mechanism for holding paper on the surface of the platform is arranged at the printing platform.
2. The inkjet printing transfer unit of claim 1, wherein: the gripper-free air suction roller comprises a roller body, more than two rows of air holes are formed in the surface of the roller body, air channels are respectively arranged in the roller body corresponding to the air holes, and the air channels are communicated with the corresponding air holes; the end part of the roller body is provided with a conducting piece in a matching way, the roller body and the conducting piece can rotate relatively, and a strong adsorption area is formed in the conducting piece; when the roller body rotates, each air channel sequentially passes through the strong adsorption area and is communicated with the strong adsorption area, and when the paper head of the paper passes through the strong adsorption area, the paper head is instantly adsorbed to the surface of the roller and is accurately positioned.
3. The inkjet printing transfer unit of claim 1, wherein: the paper holding mechanism is a negative pressure adsorption mechanism.
4. The inkjet printing transfer unit of claim 1, wherein: the paper holding mechanism is a paper pressing mechanism.
5. The inkjet printing transfer unit of claim 4 wherein: the paper pressing mechanism is a paper pressing roller arranged at two ends of the printing platform.
6. The inkjet printing transfer unit of claim 4 wherein: the paper pressing mechanism is a paper pressing wheel arranged at two ends of the printing platform.
7. The inkjet printing transfer unit of claim 4 wherein: the paper pressing mechanism is a paper pressing belt arranged at two ends of the printing platform.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221339966U true CN221339966U (en) | 2024-07-16 |
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| Date | Code | Title | Description |
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| GR01 | Patent grant |