Adjustable flatbed digital printing all-in-one machine

Abstract

The application discloses an adjustable flat plate digital printing integrated machine, and relates to the technical field of digital printing.The technical scheme is as follows: the machine comprises a rack and a printing table, four leveling components are arranged between the printing table and the rack, the leveling component comprises a guide sleeve fixed on the rack, the lower end of the printing table is fixedly connected with a supporting column in sliding fit with the guide sleeve, an adjusting screw is arranged between the guide sleeve and the supporting column, a first limiting mechanism for limiting the adjusting screw is arranged between the adjusting screw and the guide sleeve, an edge pressing roller is slidably connected to the printing table, and a driving mechanism for driving the edge pressing roller to slide is arranged on the supporting column.The adjusting component can make the height adjustment of the printing table more precise, the first limiting mechanism can further ensure that the height of the printing table remains unchanged, and the edge pressing roller can be adjusted according to actual requirements through the adjustment of the driving mechanism on the edge pressing roller.

Description

Technical Field

[0001] This invention relates to the field of digital printing technology, and more specifically, to an adjustable flatbed digital printing all-in-one machine. Background Technology

[0002] Digital printing all-in-one machines are devices that directly print digital patterns onto flat media such as textiles, leather, ceramic plates, and wood panels using inkjet printing. During the printing process, the accuracy of the distance between the printhead and the surface of the printed medium plays a decisive role in the printing quality. This distance usually needs to be controlled within 1-3mm, and the requirements are even stricter for high-precision printing. If there is a leveling deviation on the printing table, the spraying distance of the printhead in different areas of the table will be inconsistent, which will lead to problems such as pattern dispersion, ink dot offset, or even printhead scratching the medium, seriously affecting the printing quality. The leveling devices of some existing digital printing machines are controlled by electronic sensors and servo motors, which are easily affected by the high humidity, dust, and ink mist in the workshop environment, and are prone to failure.

[0003] To address this, patent CN202022234835.7 discloses a printing machine table support leveling device, which adjusts the distance between a local position of the table and the table beam by rotating multiple leveling screws. However, this solution has low precision adjustment, and the adjustment relies entirely on the operator's experience and feel, making it difficult to achieve precise fine-tuning. Furthermore, after adjustment, there is a lack of effective locking measures, and the table is prone to loosening due to vibration during long-term operation. In addition, existing digital printing machines have fixing strips on the edge of the printing table to prevent the printed media from warping. However, existing fixing strips cannot be adjusted for media of different thicknesses, and when printing patterns with large printing areas, the fixing strips will occupy the effective printing area at the edge of the printing table, resulting in material waste.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable flatbed digital printing all-in-one machine to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this invention is achieved through the following technical solution: an adjustable flatbed digital printing all-in-one machine, including a frame and a printing table mounted on the frame, four leveling components are provided between the printing table and the frame, each leveling component includes a guide sleeve fixed to the frame, a support column that slides with the guide sleeve is fixedly connected to the lower end of the printing table, an adjusting screw is provided between the guide sleeve and the support column, the two ends of the adjusting screw are threadedly connected to the guide sleeve and the support column respectively, a first limiting mechanism is provided between the adjusting screw and the guide sleeve for limiting the adjusting screw, a pressure roller is slidably connected to the printing table, and a driving mechanism for driving the pressure roller to slide is provided on the support column.

[0007] The present invention is further configured such that: the guide sleeve is provided with a first internal thread, the support column is provided with a second internal thread, the two ends of the adjusting screw are respectively provided with a first external thread that is threadedly connected to the first internal thread and a second external thread that is threadedly connected to the second internal thread, the first external thread and the second external thread have the same direction of rotation and the pitch of the first external thread is greater than the pitch of the second external thread, and the lower end of the adjusting screw extends out of the frame and is fixedly connected to an adjusting ring.

[0008] The invention is further configured such that: the guide sleeve is provided with an annular groove; the first limiting mechanism includes a limiting ring that slides with the annular groove; the adjusting screw is provided with an annular groove between the first external thread and the second external thread; the limiting ring is used to engage with the annular groove; and the guide sleeve is provided with a limiting sleeve for limiting the limiting ring.

[0009] The present invention is further configured such that: multiple connecting rods are fixedly connected to the limiting ring in a circumferential array around the limiting ring; multiple first through slots communicating with the ring groove are provided on the guide sleeve; the connecting rods are slidably engaged with the first through slots; a third external thread is provided on the outer side of the guide sleeve; the limiting sleeve is threadedly engaged with the third external thread; and the limiting sleeve abuts against the connecting rods.

[0010] The present invention is further configured such that: the third external thread is distributed between adjacent first through slots and the length of the third external thread is greater than the length of the first through slot.

[0011] The present invention is further configured such that: the pitch of the first external thread is 2.0-2.5mm, the pitch of the second external thread is 1.8-2.3mm, and the pitch difference between the first external thread and the second external thread is 0.1mm.

[0012] The invention is further configured such that: a support frame is fixedly connected to the printing table, a first connecting rod is slidably connected to the support frame, a T-shaped slider is fixedly connected to the first connecting rod, a groove is provided on the support frame to slide with the T-shaped slider, symmetrically distributed support plates are fixedly connected to the end of the first connecting rod away from the slider, a second through groove is provided on both support plates, support rods that slide with the second through grooves are connected to the two fixed wheels of the pressure roller, and a first spring is fixedly connected between the support rod and the support plate.

[0013] The present invention is further configured such that: the driving mechanism includes an adjusting block that slides with the support column; a second connecting rod and a third connecting rod are rotatably connected to the upper surface of the adjusting block; the second connecting rod and the third connecting rod are respectively rotatably connected to the two ends of the first connecting rod; and a limiting block for abutting against the lower end of the adjusting block is slidably connected to the support column.

[0014] The invention is further configured such that: a cavity is provided inside the support column to slide with the limiting block; a second spring is fixedly connected between the limiting block and the inner wall of the cavity; and an arc-shaped guide surface is provided at the end of the limiting block near the adjusting block.

[0015] In summary, the present invention has the following beneficial effects:

[0016] By setting a first external thread and a second external thread with the same direction of rotation but different pitches on the adjusting screw, setting a second internal thread that is threadedly connected to the second external thread on the support column, and setting a first internal thread that is threadedly connected to the first external thread in the adjusting sleeve, when the adjusting screw rotates, the axial displacement of the support column on the guide sleeve for each rotation of the adjusting screw is the pitch difference between the first external thread and the second external thread. This allows the operator to achieve high-precision fine adjustment of the printing table height by rotating the adjusting screw, which can effectively solve the problems of low precision and reliance on experience and feel in existing manual screw adjustment.

[0017] By setting a first limiting mechanism between the adjusting screw and the guide sleeve to limit the adjusting screw, when the support column tends to sink under the load of the platform, the first limiting mechanism can generate an upward supporting force on it. Through the threaded connection between the adjusting screw and the support column and the guide sleeve, as well as the double limiting of the first limiting mechanism, an effective locking measure can be formed to prevent the support column from axial displacement.

[0018] By sliding a pressure roller on the side of the printing table, and a drive mechanism on the support column to drive the pressure roller to slide, the pressure roller is moved towards the printing table when it is needed, thus limiting the printing medium on the printing table. When the pressure roller is not needed, it is moved away from the printing table by the drive mechanism, thereby giving the printing medium a larger effective printing area and reducing material waste. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an adjustable flatbed digital printing all-in-one machine according to the present invention;

[0020] Figure 2 This is a schematic diagram of the leveling component, edge pressing roller, and drive mechanism in an adjustable flatbed digital printing machine according to the present invention.

[0021] Figure 3 This is a cross-sectional view of the leveling component in an adjustable flatbed digital printing machine according to the present invention.

[0022] Reference numerals: 1. Frame; 2. Printing table; 3. Leveling assembly; 301. Guide sleeve; 3011. First internal thread; 3012. Third external thread; 3013. Annular groove; 3014. First through groove; 302. Support column; 3021. Second internal thread; 3022. Cavity; 303. Adjusting screw; 3031. First external thread; 3032. Second external thread; 3033. Annular groove; 3034. Adjusting ring; 4. First limiting mechanism; 401. Limiting ring; 402. Connecting rod; 5. Pressing roller; 501. Support rod; 6. Drive mechanism; 601. Adjusting block; 602. Second connecting rod; 603. Third connecting rod; 7. Limiting sleeve; 8. Support frame; 801. Slide groove; 9. First connecting rod; 10. Support plate; 1001. Second through groove; 11. First spring; 12. Limiting block; 1201. Arc-shaped guide surface; 13. Second spring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In one possible embodiment, please refer to Figure 1 , Figure 2 and Figure 3As shown, an adjustable flatbed digital printing all-in-one machine includes a frame 1 and a printing table 2 mounted on the frame 1. Four leveling components 3 are arranged between the printing table 2 and the frame 1 to adjust the height of the printing table 2. Each leveling component 3 includes a guide sleeve 301 fixed to the frame 1. A support column 302, which slides with the guide sleeve 301, is fixedly connected to the lower end of the printing table 2. An adjusting screw 30 is arranged between the guide sleeve 301 and the support column 302. 3. The two ends of the adjusting screw 303 are threadedly connected to the guide sleeve 301 and the support column 302, respectively. The guide sleeve 301 is provided with a first internal thread 3011, and the support column 302 is provided with a second internal thread 3021. The two ends of the adjusting screw 303 are respectively provided with a first external thread 3031 that is threadedly connected to the first internal thread 3011 and a second external thread 3032 that is threadedly connected to the second internal thread 3021. The first external thread 3031 and the second external thread 3032 have the same direction of rotation. Furthermore, the pitch of the first external thread 3031 is greater than the pitch of the second external thread 3032. The lower end of the adjusting screw 303 extends out of the frame 1 and is fixedly connected to the adjusting ring 3034. The adjusting ring 3034 drives the adjusting screw 303 to rotate. By setting the first external thread 3031 and the second external thread 3032 with the same direction of rotation but different pitches on the adjusting screw 303, and setting the second internal thread 3021 that is threadedly connected to the second external thread 3032 on the support column 302, and setting the first internal thread 3011 that is threadedly connected to the first external thread 3031 in the adjusting sleeve, when the adjusting screw 303 rotates, the axial displacement of the support column 302 on the guide sleeve 301 for each rotation of the adjusting screw 303 is the pitch difference between the first external thread 3031 and the second external thread 3032. This allows the operator to achieve high-precision fine adjustment of the height of the printing table 2 by rotating the adjusting screw 303, which can effectively solve the problems of low precision and reliance on experience and feel in existing manual screw adjustment.

[0025] For details, please refer to Figure 3 As shown, the pitch of the first external thread 3031 can be 2.0-2.5mm, and the pitch of the second external thread 3032 can be 1.8-2.3mm. The pitch difference between the first external thread 3031 and the second external thread 3032 is 0.1mm. Therefore, for each rotation of the adjusting screw 303, the printing table 2 rises or falls by 0.1mm, so that the height of the printing table 2 can be precisely adjusted.

[0026] For further details, please refer to Figure 2 and Figure 3As shown, a first limiting mechanism 4 for limiting the adjustment screw 303 is provided between the adjusting screw 303 and the guide sleeve 301. By providing the first limiting mechanism 4 for limiting the adjustment screw 303 between the adjusting screw 303 and the guide sleeve 301, when the support column 302 tends to sink under the load of the platform, the first limiting mechanism 4 can generate an upward supporting force on it. Through the threaded connection between the adjusting screw 303 and the support column 302 and the guide sleeve 301, as well as the double limiting by the first limiting mechanism 4, an effective locking measure can be formed to prevent the support column 302 from axial displacement.

[0027] For further details, please refer to Figure 2 and Figure 3 As shown, the guide sleeve 301 is provided with an annular groove 3013, and the limiting mechanism includes a limiting ring 401 that slides with the annular groove 3013. The adjusting screw 303 is provided with an annular groove 3033 between the first external thread 3031 and the second external thread 3032. The limiting ring 401 is used to engage with the annular groove 3033. The guide sleeve 301 is provided with a limiting sleeve 7 for limiting the limiting ring 401. Multiple threads arranged in a circumferential array around the limiting ring 401 are fixedly connected to the limiting ring 401. The connecting rod 402 and the guide sleeve 301 are provided with a plurality of first through grooves 3014 that communicate with the annular groove 3013. The connecting rod 402 is slidably engaged with the first through grooves 3014. The outer side of the guide sleeve 301 is provided with a third external thread 3012. The limiting sleeve 7 is threadedly engaged with the third external thread 3012. The limiting sleeve 7 abuts against the connecting rod 402. The third external thread 3012 is distributed between adjacent first through grooves 3014 and the length of the third external thread 3012 is greater than the length of the first through groove 3014.

[0028] For details, please refer to Figure 2 and Figure 3 As shown, after adjusting the printing platform to the desired position, slide the limiting ring 401 upward so that the limiting ring 401 abuts against the annular groove 3033. At the same time, rotate the limiting sleeve 7 located outside the guide sleeve 301 until the limiting sleeve 7 abuts against the connecting rod 402. Through the abutment between the limiting sleeve 7 and the connecting rod 402, the limiting sleeve 7 limits the limiting ring 401, thereby limiting the adjusting screw 303 and making the adjusting screw 303 less prone to loosening.

[0029] For further details, please refer to Figure 1 and Figure 2As shown, a pressure roller 5 is slidably connected to the printing table 2, and a drive mechanism 6 is provided on the support column 302 to drive the pressure roller 5 to slide. When the pressure roller 5 needs to be used, the drive mechanism 6 drives the pressure roller 5 to move towards the printing table 2 to limit the printing medium on the printing table 2. When the pressure roller 5 does not need to be used, the drive mechanism 6 drives the pressure roller 5 to move away from the printing table 2, thereby making the printing medium have a larger effective printing area and reducing material waste.

[0030] For further details, please refer to Figure 1 and Figure 2 As shown, a support frame 8 is fixedly connected to the printing table 2. A first connecting rod 9 is slidably connected to the support frame 8. A T-shaped slider is fixedly connected to the first connecting rod 9. The support frame 8 is provided with a groove 801 that slides with the T-shaped slider. The T-shaped slider can limit the first connecting rod 9 and prevent the first connecting rod 9 from separating from the support frame 8. The end of the first connecting rod 9 away from the slider is fixedly connected to symmetrically distributed support plates 10. Both support plates 10 are provided with second through grooves 1001. The two fixed wheels on both sides of the pressure roller 5 are connected to support rods 501 that slide with the second through grooves 1001. A first spring 11 is fixedly connected between the support rod 501 and the support plate 10. By setting the first spring 11, the pressure roller 5 can be adjusted according to the thickness of the printing medium, which can fully ensure the limiting of the printing medium.

[0031] For further details, please refer to Figure 1 and Figure 2 As shown, the drive mechanism 6 includes an adjusting block 601 that slides with the support column 302. The upper surface of the adjusting block 601 is rotatably connected to a second connecting rod 602 and a third connecting rod 603. The second connecting rod 602 and the third connecting rod 603 are respectively rotatably connected to the two ends of the first connecting rod 9. A limiting block 12 for abutting against the lower end of the adjusting block 601 is slidably connected on the support column 302. A cavity 3022 that slides with the limiting block 12 is provided inside the support column 302. A second spring 13 is fixedly connected between the limiting block 12 and the inner wall of the cavity 3022. An arc-shaped guide surface 1201 is provided at the end of the limiting block 12 near the adjusting block 601.

[0032] For details, please refer to Figure 1 and Figure 2As shown, when the pressure roller 5 needs to be used, by applying force to the adjusting block 601, it slides upward until the adjusting block 601 slides above the limiting block 12. The limiting block 12 will pop out under the action of the second spring 13, limiting the adjusting block 601. During the upward sliding process of the adjusting block 601, the second connecting rod 602 and the third connecting rod 603 rotate towards the side closer to the printing table 2. Through the transmission of the second connecting rod 602 and the third connecting rod 603, the first connecting rod 9 is driven to slide towards the side closer to the printing table 2, so that the pressure roller 5 is located above the printing table 2, limiting the printing medium. When it is not needed, When using the pressure roller 5, press the adjusting block 601 downwards. The adjusting block 601 will abut against the arc-shaped guide surface 1201 of the limiting block 12, causing the limiting block 12 to slide into the cavity 3022. At this time, the adjusting block 601 slides down, causing the first connecting rod 9 and the second connecting rod 602 to rotate away from the printing table 2 until they are straight. Through the transmission of the second connecting rod 602 and the third connecting rod 603, the first connecting rod 9 is driven to slide away from the printing table 2, so that the pressure roller 5 separates from the printing table 2, thereby giving the printed medium a larger effective printing area and reducing material waste.

[0033] The preferred embodiments of the present invention disclosed above are only for illustrating the present invention. These preferred embodiments do not describe all details exhaustively, nor do they limit the invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. An adjustable flatbed digital printing all-in-one machine, comprising a frame (1) and a printing table (2) mounted on the frame (1), characterized in that: Four leveling components (3) are provided between the printing table (2) and the frame (1). The leveling components (3) include a guide sleeve (301) fixed on the frame (1). The lower end of the printing table (2) is fixedly connected to a support column (302) that slides with the guide sleeve (301). An adjusting screw (303) is provided between the guide sleeve (301) and the support column (302). The two ends of the adjusting screw (303) are threadedly connected to the guide sleeve (301) and the support column (302) respectively. A first limiting mechanism (4) for limiting the adjusting screw (303) is provided between the adjusting screw (303) and the guide sleeve (301). A pressure roller (5) is slidably connected on the printing table (2). A driving mechanism (6) for driving the pressure roller (5) to slide is provided on the support column (302).

2. The adjustable flatbed digital printing all-in-one machine according to claim 1, characterized in that: The guide sleeve (301) is provided with a first internal thread (3011), the support column (302) is provided with a second internal thread (3021), and the two ends of the adjusting screw (303) are respectively provided with a first external thread (3031) threaded to the first internal thread (3011) and a second external thread (3032) threaded to the second internal thread (3021). The first external thread (3031) and the second external thread (3032) have the same direction of rotation and the pitch of the first external thread (3031) is greater than the pitch of the second external thread (3032). The lower end of the adjusting screw (303) extends out of the frame (1) and is fixedly connected to an adjusting ring (3034).

3. The adjustable flatbed digital printing all-in-one machine according to claim 2, characterized in that: The guide sleeve (301) is provided with an annular groove (3013), the first limiting mechanism (4) includes a limiting ring (401) that slides with the annular groove (3013), the adjusting screw (303) is provided with an annular groove (3033) between the first external thread (3031) and the second external thread (3032), the limiting ring (401) is used to engage with the annular groove (3033), and the guide sleeve (301) is provided with a limiting sleeve (7) for limiting the limiting ring (401).

4. The adjustable flatbed digital printing all-in-one machine according to claim 3, characterized in that: Multiple connecting rods (402) are fixedly connected to the limiting ring (401) in a circumferential array. The guide sleeve (301) is provided with multiple first through grooves (3014) that communicate with the ring groove (3013). The connecting rods (402) slide in cooperation with the first through grooves (3014). The outer side of the guide sleeve (301) is provided with a third external thread (3012). The limiting sleeve (7) is threaded in cooperation with the third external thread (3012). The limiting sleeve (7) abuts against the connecting rods (402).

5. An adjustable flatbed digital printing all-in-one machine according to claim 1, characterized in that: The third external thread (3012) is distributed between adjacent first through slots (3014) and the length of the third external thread (3012) is greater than the length of the first through slot (3014).

6. The adjustable flatbed digital printing all-in-one machine according to claim 1, characterized in that: The pitch of the first external thread (3031) is 2.0-2.5mm, the pitch of the second external thread (3032) is 1.8-2.3mm, and the pitch difference between the first external thread (3031) and the second external thread (3032) is 0.1mm.

7. An adjustable flatbed digital printing all-in-one machine according to claim 1, characterized in that: A support frame (8) is fixedly connected to the printing table (2). A first connecting rod (9) is slidably connected to the support frame (8). A T-shaped slider is fixedly connected to the first connecting rod (9). A groove (801) is provided on the support frame (8) to slide with the T-shaped slider. A symmetrically distributed support plate (10) is fixedly connected to the end of the first connecting rod (9) away from the slider. A second through groove (1001) is provided on both support plates (10). Support rods (501) that slide with the second through groove (1001) are fixedly connected to the two fixed wheels of the pressing roller (5). A first spring (11) is fixedly connected between the support rod (501) and the support plate (10).

8. An adjustable flatbed digital printing all-in-one machine according to claim 7, characterized in that: The drive mechanism (6) includes an adjusting block (601) that slides with the support column (302). The upper surface of the adjusting block (601) is rotatably connected to a second connecting rod (602) and a third connecting rod (603). The second connecting rod (602) and the third connecting rod (603) are rotatably connected to the two ends of the first connecting rod (9). A limiting block (12) is slidably connected to the support column (302) for abutting against the lower end of the adjusting block (601).

9. An adjustable flatbed digital printing all-in-one machine according to claim 8, characterized in that: The support column (302) is provided with a cavity (3022) that slides with the limiting block (12). A second spring (13) is fixedly connected between the limiting block (12) and the inner wall of the cavity (3022). An arc-shaped guide surface (1201) is provided at one end of the limiting block (12) near the adjusting block (601).

Images