Double-sided printer

Abstract

The utility model discloses a double-sided printer. The double-sided printer comprises a discharging module, a receiving module, a driving roller and a printing integration module, wherein the driving roller and the printing integration module are located between the discharging module and the receiving module; the printing integrated module comprises a printing platform and a printing cross beam, the printing platform and the printing cross beam are arranged in a penetrating mode, and a penetrating part for a printing medium to penetrate through is arranged at the position, penetrating through the printing cross beam, of the printing platform. The two printing trolleys and the printing table top form a printing integrated module, the two printing trolleys share one cross beam structure, the printing table top shares one printing platform structure, and the integrated printing platform and the printing cross beam structure are compact and simple in structure, convenient to maintain and calibrate, easy and convenient to assemble and debug and low in failure rate.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to a duplex printer. Background Technology

[0002] A duplex printer or inkjet printer is a device that can print inkjet on both sides of a substrate simultaneously. It combines the high efficiency and environmental friendliness of printing technology with the convenience of duplex printing and is widely used in advertising, decoration, packaging and other fields.

[0003] CN214646932U discloses a duplex printer with two printing platforms, one for printing the front and one for the back of the paper. In practical use, this design results in uneven utilization of the two platforms, requiring separate maintenance and calibration for each, increasing maintenance costs and operational complexity. Furthermore, each printing carriage has its own independent crossbeam, making the overall printer structure more complex and increasing the number of parts. More time and effort are needed during assembly and debugging to ensure precise fit between components. The added crossbeams also increase the printer's size, occupying more space and hindering miniaturization and portability. The complex structure translates to higher manufacturing costs, including increased costs for raw material procurement, component processing, and assembly. In addition, structural complexity reduces the printer's reliability and stability, increasing the probability of malfunctions such as crossbeam deformation and printing carriage jamming, affecting print quality and user experience.

[0004] Therefore, how to provide a new type of duplex printer that simplifies the structure, reduces costs, and improves reliability to better meet market demands is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a duplex printer that simplifies the structure, reduces size, lowers cost, and improves product reliability. It employs an interlocking printing platform and printing beam structure, with two printing carriages sharing a single beam structure and the printing table sharing a single printing platform structure. This design not only results in a compact and simple structure but also facilitates maintenance and calibration, simplifies assembly and debugging, and reduces the failure rate.

[0006] To achieve the above objectives, this utility model provides a duplex printer, characterized in that it includes: a feeding module, a receiving module, a drive roller located between the feeding module and the receiving module, and a printing integrated module;

[0007] More preferably, the feeding module includes a feeding roller and a feeding guide roller, and the receiving roller includes a receiving roller and a receiving guide roller;

[0008] More preferably, the drive roller includes a first drive roller and a second drive roller;

[0009] More preferably, the printing integrated module includes a printing platform and a printing beam, the printing platform and the printing beam are intersected, and the printing platform where it passes through the printing beam is provided with a guide portion for the printing medium to pass through. The opposite guide portions of the printing platform or the two sides of the printing beam are respectively a first printing table and a second printing table. The first printing module and the second printing module are mounted on both sides of the printing beam via beam rails.

[0010] More preferably, the first printing module corresponds to the first printing table and prints on the first side of the printing medium, and the second printing module corresponds to the second printing table and prints on the second side of the printing medium.

[0011] More preferably, the first printing table and the second printing table are located on different sides of the printing platform, and the first printing table and the second printing table are located on both sides of the through-hole of the printing platform.

[0012] More preferably, the guide portion is provided with an arc-shaped guide block at the beginning and end contact portion with the printing medium.

[0013] More preferably, the printing platform and the printing beam are intersected in a cross shape, or the printing platform and the printing beam are intersected in an X-shaped shape.

[0014] More preferably, both the first printing table and the second printing table are water-cooled printing tables.

[0015] More preferably, the printing integrated module has only one printing platform and only one printing beam, and the only printing platform and the only printing beam are intersected in a cross shape, or the only printing platform and the only printing beam are intersected in an X-shaped shape.

[0016] More preferably, the first printing module is provided with a first inkjet printing carriage, which is disposed on a crossbeam track on one side of the printing beam. The first inkjet printing carriage corresponds to the first printing table and reciprocates to print on the first side of the printing medium along the crossbeam track on that side. The second printing module is provided with a second inkjet printing carriage, which is disposed on a crossbeam track on the other side of the printing beam. The second inkjet printing carriage corresponds to the second printing table and reciprocates to print on the second side of the printing medium along the crossbeam track on that side.

[0017] More preferably, the first printing module is provided with a first distance adjustment structure for adjusting the distance between the first inkjet printing carriage and the first printing table; the second printing module is provided with a second distance adjustment structure for adjusting the distance between the second inkjet printing carriage and the second printing table.

[0018] More preferably, it also includes a first tensioning roller located on the side of the first drive roller, a second tensioning roller located on the side of the second drive roller, and an adjustment drive unit for adjusting the distance between the first tensioning roller and the first drive roller, and an adjustment drive unit for adjusting the distance between the second tensioning roller and the second drive roller, wherein the adjustment drive units are all mounted on the printer frame via adjustment bases.

[0019] This utility model of a duplex printer adopts an interlaced printing platform and printing beam structure, which together form an integrated printing module. The relative accuracy of the printing platform and printing beam can be pre-assembled and calibrated before the whole machine is installed; alternatively, they can be installed separately, making the assembly and debugging methods quite flexible. Because two inkjet carriages share a single beam structure, the relative positional accuracy of the two inkjet carriages is high with small errors. Furthermore, the printing tables share a single printing platform structure, resulting in high relative positional accuracy of the two printing tables and small printing errors. The integrated printing platform and printing beam structure is not only compact and simple in structure, but also easy to maintain and calibrate, simple to assemble and debug, and has a low failure rate.

[0020] The feeding and receiving modules in this invention feature ingenious structural designs. The feeding roller is mounted on a feeding rack, and its rotational resistance can be adjusted to facilitate synchronous feeding with the subsequent first drive roller. Similarly, the receiving roller is mounted on a receiving rack, and its rotational resistance can be adjusted to facilitate synchronous receiving with the preceding second drive roller. The dispensed printing medium is guided by the feeding guide roller assembly before entering the first drive roller. The feeding guide roller effectively guides the printing medium, working smoothly with the feeding rollers and the first drive roller in the preceding and following processes, ensuring a stable and smooth flow of the printing medium to the first drive roller. The feeding guide roller assembly includes at least one feeding guide roller. In actual equipment, one or more feeding guide rollers can be used depending on the printer specifications and the material of the printing medium to achieve stable and smooth flow. After the printed substrate is rewound, it is driven out by the second drive roller and then guided by the take-up guide roller group before entering the take-up roller. The take-up guide roller can guide the printed substrate well and works smoothly with the second drive roller and take-up roller in the preceding and following processes, so that the printed substrate can flow stably and smoothly to the take-up roller. The take-up guide roller group includes at least one take-up guide roller. In actual equipment, one or more take-up guide rollers can be set according to the printer specifications and the material of the printing substrate to achieve stable and smooth take-up. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A schematic diagram of the printing structure arrangement of a duplex printer provided in an embodiment of this utility model;

[0023] Figure 2 A schematic diagram of the printing integrated module structure in a duplex printer provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the feeding module structure in a double-sided printer provided by an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the arrangement structure of the printing beam and printing platform in a duplex printer provided by an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the overall three-dimensional structure of a double-sided printer provided in an embodiment of the present utility model.

[0027] The components are as follows: 001 Printing medium; 100 Feeding module; 110 Feeding roller; 120 Feeding rack; 130 Feeding guide roller group; 131 Feeding guide roller; 200 Receiving module; 210 Receiving roller; 220 Receiving rack; 231 Receiving guide roller; 300 First tension roller; 400 First drive roller; 600 Printing integrated module; 700 Second tension roller; 800 Second drive roller; 310 Adjustment base; 320 Adjustment drive unit; 600 Printing integrated module; 610 Printing platform; 611 First printing table; 612 Second printing table; 613 Threading part; 614 Guide block; 620 First printing module; 621 First printing inkjet carriage; 630 Second printing module; 631 Second printing inkjet carriage; 640 Printing crossbeam. Detailed Implementation

[0028] The core of this utility model is to provide a double-sided printer that simplifies the printer structure, reduces size, lowers cost, and improves product reliability.

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Please refer to Figures 1 to 5This utility model discloses a double-sided printer, characterized in that it includes: a feeding module 100, a receiving module 200, and a drive roller and a printing integrated module 600 located between the feeding module 100 and the receiving module 200; the drive roller includes a first drive roller 400 and a second drive roller 800; the feeding module 100 includes a feeding roller 110, which is mounted on the printer frame via a feeding rack 120. The feeding rack 120 is provided with an adjustment structure for adjusting the tightness of the feeding roller 110 to adjust the rotational resistance of the feeding roller 110, so as to facilitate synchronous feeding with the subsequent first drive roller 400; the receiving roller 210 is mounted on the printer frame via a receiving rack 220, which is provided with an adjustment structure for adjusting the tightness of the receiving roller 210 to adjust the rotational resistance of the receiving roller 210, so as to facilitate synchronous feeding with the preceding second drive roller 800. The unprocessed printing medium 001 is wound into the unloading roller 110 of the unloading module 100, and then sequentially driven by the first drive roller 400, double-sided printing by the printing integrated module 600, and then driven and pulled by the second drive roller 800 into the receiving roller 210 of the receiving module 200, completing a single printing cycle. During printing, the controller controls the rotational drive parameters of the first drive roller 400 and the second drive roller 800, thereby controlling the feeding speed to be stable and appropriate, and the controller controls the printing integrated module 600 to print on both sides of the printing medium 001 passing through it.

[0031] As a further detailed description of this embodiment, the feeding module 100 includes a feeding roller 110 and a feeding guide roller 131, and the receiving module 200 includes a receiving roller 210 and a receiving guide roller 231; as shown in the attached figure. Figure 1 Or attached Figure 3 In this embodiment, the number of feeding guide roller 131 and receiving guide roller 231 is at least one. The at least one feeding guide roller 131 forms a feeding guide roller group 130, and the at least one receiving guide roller 231 forms a receiving guide roller group. In the preferred embodiment, the number of feeding guide roller 131 or receiving guide roller 231 is preferably two, but it is not limited to two. It can be set to one, two, or more depending on the overall size of the printer and the material of the printing medium, as long as it can achieve a good guiding effect.

[0032] As a further detailed description of this embodiment, the printing integrated module 600 includes a printing platform 610 and a printing beam 640. The printing platform 610 and the printing beam 640 are intersecting each other, and the printing platform 610 at the point where it passes through the printing beam 640 is provided with a guide portion 613 for the printing medium 001 to pass through. The two sides of the printing platform 610 opposite to the guide portion 613 or the printing beam 640 are respectively a first printing table 611 and a second printing table 612. The two sides of the printing beam 640 are equipped with a first printing module 620 and a second printing module 630 via beam rails. As shown in the attached figure. Figure 2 Or attached Figure 4 As shown, the printing platform 610 is arranged longitudinally, and the printing beam 640 is arranged laterally. The printing platform 610 passes through the middle of the printing beam 640. Of course, it can also be arranged so that the printing beam 640 passes through the middle of the printing platform. As long as it can achieve the cross-penetration of the two and leave a passage portion 613 for the printing platform 610, this embodiment does not make specific limitations. However, any technical solution that cross-penetrates the integrated printing platform 610 and the integrated printing beam 640 is within the protection scope of this solution. The passage portion 613 for the printing medium 001 to pass through is a cavity relative to the body of the printing platform 610. The purpose of the passage portion 613 formed by the cavity is to allow the printing medium 001 to pass through and change its surface, so as to achieve the printing of two sides of the printing medium 001 and flipping it to produce different printing surfaces. The shape and size of the passage portion 613 are not specifically limited, as long as it can enable the printing medium 001 to flip through the passage portion 613 to produce different printing surfaces. The first printing surface of the printing medium 001 is attached to the first printing table 611. The first inkjet carriage 621 in the first printing module 620 corresponds to the first printing table 611 and prints the first surface of the printing medium 001. After the first surface is printed, the printing medium 001 passes through the guide portion 613 and is attached to the second printing table 612 to form the second printing surface. The second inkjet carriage 631 in the second printing module 630 corresponds to the second printing table 612 and prints the second surface of the printing medium 001. That is, through the cooperation of the two different first printing tables 611, second printing tables 612 and guide portions 613 of the printing platform 610, different surfaces of the printing medium 001 are actually printed on a single printing platform 612. Moreover, from the attached... Figure 2 It can be clearly seen that the first printing table 611 and the second printing table 612 are located on different sides of the printing platform 610, and the first printing table 611 and the second printing table 612 are located on both sides of the through part 613 of the printing platform 610.

[0033] Regarding the threading portion 613, as a further detailed description of this embodiment, the threading portion 613 is provided with an arc-shaped guide block 614 relative to the beginning and end contact portion of the printing medium 001. (See attached...) Figure 2 In the printing platform 610, guide blocks 614 are provided at both the upper and lower parts of the guide section 613. After the printing medium 001 is printed on the first printing table 611, it enters the guide section 613 along the upper guide block 614 and then enters the second printing table 612 along the lower guide block 614. The guide blocks 614 make the printing medium 001 flip more smoothly and without jamming or wrinkling. Moreover, the upper and lower ends of the printing platform 610 have a turning relationship with the printing medium. Arc-shaped chamfers can be provided at the upper and lower ends of the printing strip 60=10, or guide blocks 614 structures can also be provided to facilitate the smooth guidance of the printing medium 001 from the first drive roller 400 to the first printing table 611 of the printing platform 610, and also facilitate the smooth guidance of the printing medium 001 from the second printing table 612 of the printing platform 610 to the second drive roller 800.

[0034] More detailed, as a further detailed description of this embodiment, is provided in the appendix. Figure 2 In this design, the printing platform 610 and the printing beam 640 are intersected in a cross shape, or in an X-shaped cross shape. The angle of the cross shape can be arbitrarily set, such as 30°, 45°, 60°, etc. In this solution, both the first printing table 611 and the second printing table 612 are water-cooled printing tables. Of course, depending on the printing medium, one of several methods such as water cooling, air cooling, or heating drying can be used, as long as it can dry and solidify the printed substrate 001.

[0035] It needs to be emphasized again that the printing integrated module 600 has only one printing platform 610 and only one printing crossbeam 640. The only printing platform 610 and the only printing crossbeam 640 are intersected in a cross shape, or the only printing platform 610 and the only printing crossbeam 640 are intersected in an X-shaped cross shape. In traditional printers, two independent printing platforms 610 are typically required to print on both sides of the printing medium 001. These platforms require two independent printing beams 640 to carry two opposing inkjet carriages for separate printing. This solution achieves double-sided printing of the printing medium 001 using a single printing platform 610. Furthermore, by setting different inkjet carriage tracks on both sides of a single printing beam 640, the two inkjet carriages are mounted on the same mounting base, resulting in higher assembly and alignment accuracy, a simpler structure, easier assembly, and lower cost. Regarding the printing module in this embodiment, the first printing module 620 includes a first inkjet carriage 621, which is mounted on a beam track on one side of the printing beam 640. Figure 2 (As shown on the left), the first inkjet printing carriage 621 corresponds to the first printing table 611 and reciprocates printing on the first surface of the printing medium 001 along the side crossbeam track. The second printing module 630 is provided with a second inkjet printing carriage 631, which is located on the other side crossbeam track of the printing crossbeam 640. Figure 2 (As shown on the right), the second inkjet printing carriage 631 corresponds to the second printing table 612 and reciprocates printing on the second surface of the printing medium 001 along the side crossbeam track. The first printing module 620 is provided with a first distance adjustment structure (not shown in the figure) for adjusting the distance between the first inkjet printing carriage 621 and the first printing table 611; the second printing module 630 is provided with a second distance adjustment structure (not shown in the figure) for adjusting the distance between the second inkjet printing carriage 631 and the second printing table 612. The first and second distance adjustment structures are conventional distance adjustment structures and will not be described further in this embodiment.

[0036] Because of the differences in the printing media 001, especially the differences in thickness, in order to prevent the printing media 001 from sliding relative to each other on the first drive roller 400 and the second drive roller 800, which would lead to printing misalignment and confusion, this solution also includes a first tensioning roller 300 located on the side of the first drive roller 400 and a second tensioning roller 700 located on the side of the second drive roller 800. The gap between the first tensioning roller 300 and the first drive roller 400 is referenced to the thickness of the printing media 001, so that the first tensioning roller 300 and the first drive roller 400 can clamp the printing media 001 between each other and continuously clamp the printing media 001 under the rotation drive of the first drive roller 400 to send it to the next process. The second tensioning roller 700 works in the same way, and will not be described in detail here. In addition, due to the different thicknesses of the printing medium 001, the system also includes an adjustment drive unit 320 for adjusting the distance between the first tension roller 300 and the first drive roller 400, and an adjustment drive unit 320 for adjusting the distance between the second tension roller 700 and the second drive roller 800. The adjustment drive units 320 are all mounted on the printer frame via adjustment bases 310. The adjustment drive units 320 are common electric, pneumatic, or hydraulic adjustment structures, which will not be described in detail here. The purpose is to move the first tension roller 300 or the second tension roller 700 away from or closer to the first drive roller 400 or the second drive roller 800, thereby adjusting the distance between them.

[0037] This solution adopts a staggered printing platform 610 and printing beam 640 structure, with the two printing carriages sharing a beam structure and the printing table sharing a printing platform 610 structure. This not only makes the structure compact and simple, but also facilitates maintenance and calibration, simplifies assembly and debugging, and results in a low failure rate.

[0038] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0040] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0041] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A duplex printer, characterized in that, include: Feeding module (100), receiving module (200) and drive roller located between feeding module (100) and receiving module (200), printing integrated module (600); The feeding module (100) includes a feeding roller (110) and a feeding guide roller (131), and the receiving module (200) includes a receiving roller (210) and a receiving guide roller (231). The drive roller includes a first drive roller (400) and a second drive roller (800); The printing integrated module (600) includes a printing platform (610) and a printing beam (640). The printing platform (610) and the printing beam (640) are intersected. The printing platform (610) at the point where it passes through the printing beam (640) is provided with a guide portion (613) for the printing medium (001) to pass through. The two sides of the printing platform (610) opposite the guide portion (613) or the printing beam (640) are respectively a first printing table surface (611) and a second printing table surface (612). The two sides of the printing beam (640) are loaded with a first printing module (620) and a second printing module (630) via beam rails. The first printing module (620) corresponds to the first printing table (611) and prints on the first side of the printing medium (001), and the second printing module (630) corresponds to the second printing table (612) and prints on the second side of the printing medium (001).

2. The duplex printer as described in claim 1, characterized in that, The first printing table (611) and the second printing table (612) are located on different sides of the printing platform (610), and the first printing table (611) and the second printing table (612) are located on both sides of the through part (613) of the printing platform (610).

3. The duplex printer as described in claim 1 or 2, characterized in that, The guide portion (613) is provided with an arc-shaped guide block (614) relative to the beginning and end contact portion of the printing medium (001).

4. The duplex printer as described in claim 1 or 2, characterized in that, The printing platform (610) and the printing beam (640) are intersected in a cross shape, or the printing platform (610) and the printing beam (640) are intersected in an X-shaped shape.

5. The duplex printer as described in claim 1, characterized in that, Both the first printing table (611) and the second printing table (612) are water-cooled printing tables.

6. The duplex printer as described in claim 1, characterized in that, The printing integrated module (600) has only one printing platform (610) and only one printing beam (640). The printing platform (610) and the printing beam (640) are intersected in a cross shape, or the printing platform (610) and the printing beam (640) are intersected in an X-shaped cross shape.

7. The duplex printer as described in claim 1, characterized in that, The first printing module (620) is provided with a first printing inkjet carriage (621), which is set on a crossbeam track on one side of the printing crossbeam (640). The first printing inkjet carriage (621) corresponds to the first printing table (611) and reciprocates to print the first side of the printing medium (001) along the crossbeam track on that side. The second printing module (630) is provided with a second printing inkjet carriage (631), which is set on a crossbeam track on the other side of the printing crossbeam (640). The second printing inkjet carriage (631) corresponds to the second printing table (612) and reciprocates to print the second side of the printing medium (001) along the crossbeam track on that side.

8. The duplex printer as described in claim 5, characterized in that, The first printing module (620) is provided with a first distance adjustment structure for adjusting the distance between the first printing inkjet carriage (621) and the first printing table (611); the second printing module (630) is provided with a second distance adjustment structure for adjusting the distance between the second printing inkjet carriage (631) and the second printing table (612).

9. The duplex printer as described in claim 1, characterized in that, It also includes a first tension roller (300) located on the side of the first drive roller (400) and a second tension roller (700) located on the side of the second drive roller (800). It also includes an adjustment drive unit (320) for adjusting the distance between the first tension roller (300) and the first drive roller (400) and an adjustment drive unit (320) for adjusting the distance between the second tension roller (700) and the second drive roller (800). The adjustment drive units (320) are all mounted on the printer frame via an adjustment base (310).

10. The duplex printer as described in claim 1, characterized in that, The number of feeding guide rollers (131) and receiving guide rollers (231) is at least one, the at least one feeding guide roller (131) forms a feeding guide roller group (130), and the at least one receiving guide roller (231) forms a receiving guide roller group.

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