Machine head adjusting device for ink-jet printing

Abstract

The utility model relates to a machine head adjusting device for ink-jet printing, which comprises a machine head unit, a machine head cross beam positioning plate and a machine head frame positioning plate, the machine head unit comprises a machine head air cylinder and a machine head side plate which is connected with the machine head air cylinder and is driven by the machine head air cylinder to move up and down, a through hole is formed in the lower portion of the machine head side plate, a plugging screw is arranged in the through hole in a sliding and penetrating mode, and the lower end of the plugging screw penetrates through the machine head side plate and is fixed to a machine head bottom plate. A pressure spring is sleeved on the plugging screw and is positioned between the machine head side plate and the machine head bottom plate; ball head jackscrews are arranged on the machine head cross beam positioning plate and the machine head frame positioning plate, and the number of the ball head jackscrews is not less than three. According to the utility model, the angle of the machine head bottom plate can be finely adjusted so as to adjust the angle of the nozzle, and the downward movement of the machine head bottom plate can be guided and positioned.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printers, specifically to an inkjet printer head adjustment device. Background Technology

[0002] An inkjet printer is a printing device that uses micro-nozzles to spray liquid ink onto paper or other media to form text or images. Its working principle is to convert colored ink into tiny droplets to achieve full-color output. It supports high-resolution, high-precision color printing. To ensure high-precision printing, the printhead must be parallel to the printing media. The printhead is mounted on a base plate, so the base plate must also be parallel to the printing media. However, due to factors such as manufacturing precision, the weight of the printing carriage, and height adjustments, the base plate may tilt slightly. In this case, the angle of the printhead or the base plate needs to be adjusted. Adjusting each printhead individually is time-consuming, labor-intensive, and difficult to ensure uniformity. Therefore, adjusting the entire base plate while maintaining the printhead mounting accuracy is a simple and effective method. Furthermore, inkjet printers are prone to printhead clogging when idle for extended periods, leading to higher ink consumption costs. The conventional method is to cover the bottom of the printhead with an end cap. However, during printing, the distance between the printhead and the printing media is relatively short, requiring the base plate to be raised to provide space for the printhead when the end cap is applied. When printing inkjet again, remove the cover and lower the base plate to bring the printhead closer to the printing medium. However, due to the lack of a positioning and limiting device, deviations are prone to occur when the base plate is lowered.

[0003] In view of this, the present invention provides a printhead adjustment device for inkjet printing. By suspending a base plate and cooperating with a ball head screw, and by using the downward pressure generated when the cylinder contracts to press the suspended base plate against the ball head screw, the purpose of fine adjustment of the base plate angle is achieved. Furthermore, by setting a positioning pin on the positioning plate and a strip hole on the base plate, the base plate is guided to descend to the correct position. Utility Model Content

[0004] The present invention aims to provide a printhead adjustment device for inkjet printing to overcome the shortcomings of the prior art. The technical problem to be solved by the present invention is achieved through the following technical solution.

[0005] An inkjet printer head adjustment device includes a head unit, improved in that it further includes a head beam positioning plate and a head frame positioning plate; the head unit includes a head cylinder and a head side plate connected to and driven by the head cylinder to move up and down; the lower part of the head side plate has a through hole and a plug screw slides through the through hole; the lower end of the plug screw passes through the head side plate and is fixed to the head base plate; a compression spring is sleeved on the plug screw, and the compression spring is located between the head side plate and the head base plate; both the head beam positioning plate and the head frame positioning plate are provided with ball head set screws, and the number of ball head set screws is not less than three; the head cylinder drives the head base plate down to the lower surface of the head base plate to abut against some of the ball head set screws and continues to move down so that the lower surface of the head base plate abuts against all of the ball head set screws.

[0006] Preferably, the head unit further includes a head back plate, which is fixed to the cylinder extension part of the head cylinder, and the head side plate is disposed on the head back plate.

[0007] Preferably, the head cylinder is mounted on the head guide beam slide of the guide beam unit.

[0008] Preferably, the head guide beam slide is provided with a head guide beam slider, and the head guide beam slider cooperates with the head guide beam slide rail of the guide beam unit to realize the movement of the head unit relative to the guide beam unit.

[0009] Preferably, the head guide beam slide is provided with a head guide beam fixing component, and the head unit is fixed relative to the guide beam unit through the head guide beam fixing component.

[0010] Preferably, the head frame positioning plate is disposed on the head frame support of the frame unit.

[0011] Preferably, the head beam positioning plate is disposed on the head beam support member of the beam unit.

[0012] Preferably, the number of the drive screws is at least four, and the at least four drive screws are located at at least the four corners of the machine head base plate.

[0013] Preferably, the upper end of the compression spring is connected to or not connected to the lower surface of the machine head side plate, and the lower end of the compression spring is connected to or not connected to the upper surface of the machine head base plate.

[0014] Preferably, the machine head frame positioning plate is provided with a positioning pin, and the machine head bottom plate is provided with a strip hole that matches the positioning pin. The positioning pin and the strip hole cooperate to guide and position the downward movement of the machine head bottom plate.

[0015] In this invention, the head cylinder drives the head side plate and head base plate to rise and fall, thus providing space for the end cap to be added. The head base plate is suspended from the head side plate by plug screws and a compression spring, providing adjustment space for fine-tuning of the head base plate. At least three ball-head set screws define a plane. The head cylinder descends and uses the compression spring to ensure that the lower surface of the head base plate fully abuts against the highest points of all the ball-head set screws, thereby achieving the purpose of fine-tuning the angle of the head base plate. This invention guides and positions the downward movement of the head base plate by setting positioning pins and slotted holes. This invention can fine-tune the angle of the head base plate to adjust the nozzle angle and guide and position the downward movement of the head base plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a front view structural diagram of the head unit in this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the head unit in this utility model;

[0020] The reference numerals in the attached drawings are as follows: 10, frame unit; 11, head frame support; 12, head frame positioning plate; 20, crossbeam unit; 21, head crossbeam support; 22, head crossbeam positioning plate; 30, guide beam unit; 31, head guide beam slide; 32, head guide beam slider; 33, head guide beam slide rail; 34, head guide beam fixing component; 40, head unit; 41, head cylinder; 411, cylinder fixing part; 412, cylinder telescopic part; 42, head back plate; 43, head side plate; 44, head bottom plate; 45, plug screw; 46, compression spring; 47, ball head set screw; 48, positioning pin; 49, nozzle. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Example 1:

[0023] Reference Figures 1 to 4As shown, an inkjet printer head adjustment device includes a head unit 40, which is improved in that it further includes a head beam positioning plate 22 and a head frame positioning plate 12; the head unit 40 includes a head cylinder 41 and a head side plate 43 connected to and driven by the head cylinder 41 to move up and down; the lower part of the head side plate 43 is provided with a through hole and a plug screw 45 slides through the through hole; the lower end of the plug screw 45 passes through the head side plate 43 and is fixed to the head base plate 44; a compression spring 46 is sleeved on the plug screw 45. The compression spring 46 is located between the machine head side plate 43 and the machine head bottom plate 44; both the machine head crossbeam positioning plate 22 and the machine head frame positioning plate 12 are provided with ball head set screws 47, and the number of ball head set screws 47 is not less than three; the machine head cylinder 41 drives the machine head bottom plate 44 to descend until the lower surface of the machine head bottom plate 44 abuts against some of the ball head set screws 47 and continues to descend, and the compression spring 46 transmits the downward pressure of the machine head cylinder 41 to the machine head bottom plate 44 so that the lower surface of the machine head bottom plate 44 abuts against all of the ball head set screws 47.

[0024] In this embodiment, the head cylinder 41 drives the head side plate 43 and the head base plate 44 to rise and fall, thereby providing space for adding the end cap; the head base plate 44 is suspended on the head side plate 43 by a plug screw 45 and a compression spring 46, providing adjustment space for fine-tuning of the head base plate 44 by suspension; at least three ball head set screws 47 define the plane, and the head cylinder 41 moves downward and uses the compression spring 46 to make the lower surface of the head base plate 44 completely abut against the highest point of all the ball head set screws 47, thereby achieving the purpose of fine-tuning the angle of the head base plate 44.

[0025] In this embodiment, during operation, the head cylinder 41 moves downward, driving the head base plate 44 downward. When the head base plate 44 is slightly tilted, its lower surface first contacts a portion of the ball-head setter screws 47 during the downward movement. At this point, the contact point is not at the highest point of the ball-head setter screws 47. As the head cylinder 41 continues to move downward, the tilted portion of the head base plate 44 contacts other ball-head setter screws 47 under the action of the head cylinder 41 and the pressure of the compression spring 46. The portion of the head base plate 44 that has already contacted the ball-head setter screws 47 then compresses the compression spring 46 until the lower surface of the head base plate 44 contacts all the ball-head setter screws 47. At this point, the contact point is at the highest point of the ball-head setter screws 47. Based on the principle that three points determine a plane, at least three ball-head ejector screws 47 can determine a plane. After the print head cylinder 41 moves downward so that the lower surface of the print head base plate 44 abuts against all the ball-head ejector screws 47, the plane where the print head base plate 44 is located is parallel to the plane where all the ball-head ejector screws 47 are located. Under the premise that the plane where all the ball-head ejector screws 47 are located is parallel to the plane where the printing medium is located, and the plane where the print head base plate 44 is located is parallel to the plane where the print head 49 is located, the planes where the print head base plate 44 and the print head 49 are located are both parallel to the plane where the printing medium is located, thereby achieving the purpose of adjusting the tilt angle of the print head.

[0026] In this embodiment, the machine head base plate 44 is suspended on the machine head side plate 43 by the stop screw 45 and the compression spring 46. The downward pressure of the machine head cylinder 41 causes the machine head base plate 44 to press against all the ball head set screws 47, thereby achieving the purpose of fine adjustment of the machine head base plate 44.

[0027] Furthermore, the head frame positioning plate 12 is provided with a positioning pin 48, and the head base plate 44 is provided with a strip hole that matches the positioning pin 48. The downward movement of the head base plate 44 is guided and positioned by the cooperation between the positioning pin 48 and the strip hole.

[0028] In this embodiment, the downward movement of the machine head base plate 44 is guided and positioned by setting the positioning pin 48 and the strip hole.

[0029] Furthermore, the number of the screws 45 is at least four, and the at least four screws 45 are provided at at least the four corners of the machine head base plate 44.

[0030] Furthermore, the upper end of the compression spring 46 may or may not be connected to the lower surface of the machine head side plate 43, and the lower end of the compression spring 46 may or may not be connected to the upper surface of the machine head base plate 44.

[0031] Furthermore, the head frame positioning plate 12 is disposed on the head frame support member 11 of the frame unit 10.

[0032] Furthermore, the head beam positioning plate 22 is disposed on the head beam support member 21 of the beam unit 20.

[0033] Example 2:

[0034] Based on Example 1, referring to Figures 2 to 4 As shown, the head unit 40 also includes a head back plate 42, which is fixed to the cylinder extension part 412 of the head cylinder 41, and the head side plate 43 is disposed on the head back plate 42.

[0035] In this embodiment, the machine head side plate 43 is connected to the machine head cylinder 41 through the machine head back plate 42 and is driven to move up and down by the machine head cylinder 41. The machine head side plate 43 drives the machine head base plate 44 to move up and down through the plug screw 45 and transmits the pressure of the downward movement of the machine head cylinder 41 to the machine head base plate 44 through the compression spring 46, thereby enabling the machine head base plate 44 to adaptively adjust its tilt angle under the reverse push of the ball head set screw 47.

[0036] Furthermore, the head cylinder 41 is mounted on the head guide beam slide 31 of the guide beam unit 30; even further, the cylinder fixing part 411 of the head cylinder 41 is mounted on the head guide beam slide 31.

[0037] Furthermore, the head guide beam slide block 31 is provided with a head guide beam slider 32, which cooperates with the head guide beam slide rail 33 of the guide beam unit 30 to realize the movement of the head unit 40 relative to the guide beam unit 30.

[0038] Furthermore, the head guide beam slide 31 is provided with a head guide beam fixing member 34, and the head unit 40 is fixed relative to the guide beam unit 30 through the head guide beam fixing member 34.

[0039] In this embodiment, the movement of the printhead unit 40 relative to the guide beam unit 30 is achieved by setting the printhead guide beam slide 31, the printhead guide beam slider 32, and the printhead guide beam slide rail 33, and the fixation of the printhead unit 40 relative to the guide beam unit 30 is achieved by setting the printhead guide beam fixing member 34. The reason for moving the printhead unit 40 is that in actual use, it is necessary to adjust the distance between adjacent printheads and between the printhead and the UV lamp unit to adapt to different types of ink, different colors of ink, and the requirements of irradiation time.

[0040] It should be noted that the above detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0043] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0044] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0045] In the detailed description above, reference has been made to the accompanying drawings, which form part of this document. In the drawings, similar symbols typically identify similar parts unless the context otherwise indicates otherwise. The illustrated embodiments described in the detailed specification, drawings, and claims are not intended to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A printhead adjustment device for inkjet printing, comprising a printhead unit (40), characterized in that: It also includes a head beam positioning plate (22) and a head frame positioning plate (12); the head unit (40) includes a head cylinder (41) and a head side plate (43) connected to the head cylinder (41) and driven by the head cylinder (41) to move up and down. The lower part of the head side plate (43) is provided with a through hole and a plug screw (45) is slidably inserted in the through hole. The lower end of the plug screw (45) passes through the head side plate (43) and is fixed on the head base plate (44). A compression spring (46) is sleeved on the plug screw (45). The compression spring (46) is located between the machine head side plate (43) and the machine head bottom plate (44); both the machine head crossbeam positioning plate (22) and the machine head frame positioning plate (12) are provided with ball head set screws (47), and the number of ball head set screws (47) is not less than three; the machine head cylinder (41) drives the machine head bottom plate (44) to descend to the lower surface of the machine head bottom plate (44) and abut against some of the ball head set screws (47) and continue to descend so that the lower surface of the machine head bottom plate (44) abuts against all of the ball head set screws (47).

2. The inkjet printer head adjustment device according to claim 1, characterized in that: The head unit (40) also includes a head back plate (42), which is fixed to the cylinder extension part (412) of the head cylinder (41), and the head side plate (43) is disposed on the head back plate (42).

3. The inkjet printer head adjustment device according to claim 1, characterized in that: The head cylinder (41) is located on the head guide beam slide (31) of the guide beam unit (30).

4. The inkjet printer head adjustment device according to claim 3, characterized in that: The head guide beam slide block (31) is provided with a head guide beam slider (32), which cooperates with the head guide beam slide rail (33) of the guide beam unit (30) to realize the movement of the head unit (40) relative to the guide beam unit (30).

5. The inkjet printer head adjustment device according to claim 3, characterized in that: The head guide beam slide (31) is provided with a head guide beam fixing member (34), and the head unit (40) is fixed relative to the guide beam unit (30) through the head guide beam fixing member (34).

6. The inkjet printer head adjustment device according to claim 1, characterized in that: The head frame positioning plate (12) is located on the head frame support (11) of the frame unit (10).

7. The inkjet printer head adjustment device according to claim 1, characterized in that: The machine head beam positioning plate (22) is located on the machine head beam support member (21) of the beam unit (20).

8. The inkjet printer head adjustment device according to claim 1, characterized in that: The number of the screws (45) is at least four, and the at least four screws (45) are located at at least the four corners of the machine head base plate (44).

9. The inkjet printer head adjustment device according to claim 1, characterized in that: The upper end of the compression spring (46) is connected to or not connected to the lower surface of the machine head side plate (43), and the lower end of the compression spring (46) is connected to or not connected to the upper surface of the machine head bottom plate (44).

10. The inkjet printer head adjustment device according to claim 1, characterized in that: The head frame positioning plate (12) is provided with a positioning pin (48), and the head base plate (44) is provided with a strip hole that matches the positioning pin (48). The positioning pin (48) and the strip hole cooperate to guide and position the downward movement of the head base plate (44).

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