Adjusting mechanism for horizontal printing head of printing machine
Patent Information
- Application Number
- CN202522228963.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-10-22
AI Technical Summary
现有技术中，水平印头的抬升调节多采用传动带传动的结构方式；然而，传动带传动存在传动精度低、反向间隙大的缺陷，难以对印头抬升高度进行精准控制，易导致印头与基材的相对位置偏差，进而影响印刷清晰度、墨层均匀性等印刷质量指标，尤其在精细印刷场景（如精密电路印刷、高分辨率图案印刷）中，该缺陷更为突出，无法满足行业对高精度印刷的需求；因此，亟需一种能提高印头抬升精度、稳定保障印刷质量的调节机构
[0011]本实用新型采用滚珠丝杆传动替代传统的传动带传动，滚珠丝杆具有传动效率高、反向间隙小的特点，能够实现对固定块移动距离的精准控制，进而保证水平印头与印刷基材之间的相对位置精度，有效解决了传统机构因传动精度低导致的印刷清晰度不足、墨层不均匀等问题，尤其适用于精密电路印刷、高分辨率图案印刷等精细印刷场景。
Smart Images
Figure CN224644482U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printing equipment technology, and more specifically, it relates to an adjustment mechanism for the horizontal print head of a printing press. Background Technology
[0002] In the field of printing equipment, the height adjustment mechanism of the horizontal printhead is a key component for ensuring print quality, as it adjusts the relative distance between the printhead and the printing substrate. Currently, the horizontal printhead lifting adjustment mostly uses a belt drive structure; however, belt drives suffer from low transmission precision and large backlash, making it difficult to precisely control the printhead lifting height. This easily leads to deviations in the relative position of the printhead and the substrate, affecting print quality indicators such as print clarity and ink layer uniformity. This deficiency is particularly pronounced in fine printing scenarios (such as precision circuit printing and high-resolution pattern printing), failing to meet the industry's demands for high-precision printing. Therefore, there is an urgent need for an adjustment mechanism that can improve printhead lifting precision and stably ensure print quality. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustment mechanism for the horizontal print head of a printing press, so as to solve the technical problems existing in the background art.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an adjustment mechanism for a horizontal printhead of a printing press, comprising: a mounting base, a fixed block for connecting to the horizontal printhead of the printing press, a screw drive module for driving the fixed block to move up and down, a drive module for driving the screw drive module, a detection module for detecting the lifting height of the fixed block, and a control module; the mounting base has a mounting cavity; the fixed block is slidably mounted in the mounting cavity; the screw drive module is rotatably mounted in the mounting cavity, and its output end is drively connected to the fixed block; the drive module is mounted on the top of the mounting base, and its output end passes through the top of the mounting base and is placed in the mounting cavity to drively connect to the input end of the screw drive module; the detection module is mounted in the mounting cavity and located on one side of the fixed block; the control module is electrically connected to the drive module and the detection module respectively.
[0005] Optionally, the screw drive module includes: a ball screw, an upper bearing housing, a lower bearing housing, and a ball nut adapted to the ball screw; the upper bearing housing and the lower bearing housing are spaced apart from top to bottom in the mounting cavity; the inner wall of the lower end of the ball screw abuts against the inner wall of the lower bearing housing, and its upper end passes through the upper bearing housing and is connected to the output end of the drive module; the outer wall of the ball screw abuts against the inner wall of the upper bearing housing; the ball nut is installed on the ball screw and located in the gap between the lower bearing housing and the upper bearing housing; the ball nut is fixedly connected to the fixing block.
[0006] Optionally, the bottom of the upper bearing housing is provided with a buffer pad that can abut against the ball nut; the upper end of the lower bearing housing is provided with an elastic impact post that can abut against the ball nut.
[0007] Optionally, the drive module includes: a drive motor, a reducer, a motor mount, and a coupling; the motor mount is installed in the mounting cavity and fixedly connected to the upper end of the upper bearing seat; the reducer is fixedly connected to the motor mount, and its assembly end passes through the top of the mounting seat and is fixedly connected to the drive motor, and its input end is drivenly connected to the output end of the drive motor; the output end of the reducer is drivenly connected to the input end of the coupling; the output end of the coupling is drivenly connected to the input end of the ball screw; the drive motor is electrically connected to the control module.
[0008] Optionally, the control module includes: an electrical control cabinet and a controller; the controller is installed in the electrical control cabinet and is electrically connected to the drive motor and the detection module respectively.
[0009] Optionally, the detection module includes: a photoelectric sensor; the photoelectric sensor is installed in the mounting cavity and located in the gap between the mounting base and the fixing block; the fixing block is provided with a sensing sheet corresponding to the photoelectric sensor.
[0010] Optionally, two slide rails are symmetrically arranged on the two side walls of the mounting cavity; sliders adapted to the slide rails are arranged on both sides of the fixing block; the sliders are slidably connected to the slide rails; and limit blocks are respectively provided at the bottom of the two slide rails.
[0011] This invention uses ball screw transmission to replace the traditional transmission belt transmission. The ball screw has the characteristics of high transmission efficiency and small backlash, which can achieve precise control of the moving distance of the fixed block, thereby ensuring the relative positional accuracy between the horizontal print head and the printing substrate. It effectively solves the problems of insufficient printing clarity and uneven ink layer caused by low transmission accuracy in traditional mechanisms, and is especially suitable for fine printing scenarios such as precision circuit printing and high-resolution pattern printing. Attached Figure Description
[0012] Figure 1 This is an assembly drawing of this utility model; Figure 2 This is a schematic diagram showing the structural relationship between the lead screw drive module and its components during assembly of this utility model.
[0013] In the diagram: 1. Mounting base; 2. Fixing block; 3. Screw drive module; 31. Ball screw; 32. Upper bearing seat; 33. Lower bearing seat; 34. Ball nut; 35. Buffer pad; 36. Elastic impact post; 4. Drive module; 41. Drive motor; 42. Reducer; 43. Motor seat; 44. Coupling; 5. Mounting cavity; 6. Detection module; 61. Photoelectric sensor; 7. Sensing plate; 8. Slide rail; 9. Slider; 10. Limit block. Detailed Implementation
[0014] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.
[0015] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.
[0016] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.
[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0018] like Figure 1-2 As shown, this utility model provides an adjustment mechanism for the horizontal print head of a printing press, including: a mounting base 1, a fixing block 2 for connecting to the horizontal print head of the printing press, a screw drive module 3 for driving the fixing block 2 to move up and down, a drive module 4 for driving the screw drive module 3, a detection module 6 for detecting the lifting height of the fixing block 2, and a control module; the mounting base 1 has a mounting cavity 5; the fixing block 2 is slidably mounted in the mounting cavity 5; the screw drive module 3 is rotatably mounted in the mounting cavity 5, and its output end is connected to the fixing block 2; the drive module 4 is mounted on the top of the mounting base 1, and its output end passes through the top of the mounting base 1 and is placed in the mounting cavity 5, connected to the input end of the screw drive module 3; the detection module 6 is mounted in the mounting cavity 5 and located on one side of the fixing block 2; the control module is electrically connected to the drive module 4 and the detection module 6 respectively; the overall structure is stable and easy to install.
[0019] Further, the screw drive module 3 includes: a ball screw 31, an upper bearing seat 32, a lower bearing seat 33, and a ball nut 34 adapted to the ball screw 31; the upper bearing seat 32 and the lower bearing seat 33 are spaced apart from top to bottom in the mounting cavity 5; the inner wall of the lower end of the ball screw 31 abuts against the inner wall of the lower bearing seat 33, and its upper end passes through the upper bearing seat 32 and is connected to the output end of the drive module 4; the outer wall of the ball screw 31 abuts against the inner wall of the upper bearing seat 32; the ball nut 34 is installed on the ball screw 31 and is located in the gap between the lower bearing seat 33 and the upper bearing seat 32; the ball nut 34 is fixedly connected to the fixing block 2; the bottom of the upper bearing seat 32 is provided with a buffer pad 35 that can abut against the ball nut 34; the upper end of the lower bearing seat 33 is provided with an elastic impact post 36 that can abut against the ball nut 34.
[0020] In this embodiment, as Figure 1-2 As shown, both the upper bearing housing 32 and the lower bearing housing 33 are made of ductile iron and are fixed to the inner wall of the mounting cavity 5 from top to bottom by fastening bolts. The central axes of the two are kept coincident, providing a stable support reference for the ball screw 31. The ball screw 31 is a high-precision cold-rolled ball screw. Its lower outer wall is interference-fitted with the inner wall of the deep groove ball bearing in the lower bearing housing 33, and its upper end extends through the bearing in the upper bearing housing 32 to the bottom of the drive module 4. The outer wall of the ball screw 31 is in close contact with the inner wall of the bearing in the upper bearing housing 32 to ensure coaxiality during rotation. The ball nut 34 is threaded onto the ball screw 31 and is located exactly in the gap between the upper bearing housing 32 and the lower bearing housing 33. One side of the ball nut 34 is welded... The upper bearing seat 32 is fixedly connected to the side wall of the fixed block 2, realizing the conversion of the rotational motion of the ball screw 31 into the linear motion of the fixed block 2. To avoid rigid collision between the ball nut 34 and the bearing seat at the extreme position, a 5mm thick rubber buffer pad 35 is fixed to the bottom of the upper bearing seat 32 by adhesive bonding. The size of the buffer pad 35 is adapted to the upper surface of the ball nut 34. The upper end of the lower bearing seat 33 is connected by a threaded connection to an elastic impact post 36. The elastic impact post 36 consists of a stainless steel outer sleeve and an internal spring. The pre-compression of the spring can be finely adjusted according to the actual adjustment stroke. When the ball nut 34 moves to the upper or lower extreme position, the buffer pad 35 and the elastic impact post 36 can effectively absorb the impact force and extend the service life of the mechanism.
[0021] Further, the drive module 4 includes: a drive motor 41, a reducer 42, a motor mount 43, and a coupling 44; the motor mount 43 is installed in the mounting cavity 5 and is fixedly connected to the upper end of the upper bearing seat 32; the reducer 42 is fixedly connected to the motor mount 43, and its assembly end passes through the top of the mounting base 1 and is fixedly connected to the drive motor 41, and its input end is drive-connected to the output end of the drive motor 41; the output end of the reducer 42 is drive-connected to the input end of the coupling 44; the output end of the coupling 44 is drive-connected to the input end of the ball screw 31; the drive motor 41 is electrically connected to the control module.
[0022] In this embodiment, as Figure 1-2 As shown, the motor base 43 is a U-shaped structure formed by bending steel plate, and is fixed to the upper end face of the upper bearing seat 32 by bolts. Its installation position ensures that the output end of the reducer 42 and the input end of the ball screw 31 are on the same axis. The reducer 42 is a planetary gear reducer 42. Its fixed end is fastened to the motor base 43 by bolts, and the assembly end extends to the outside of the mounting seat 1 after passing through the pre-set through hole at the top of the mounting seat 1. It is fixedly connected to the output shaft end of the drive motor 41 by a flange. The input end of the reducer 42 and the output end of the drive motor 41 are connected by a key, which can convert the high speed of the drive motor 41 into a low speed and high torque power output. The coupling 44 is an elastic coupling 44. Its input end is connected to the output end of the reducer 42 by a key, and its output end is fixed to the upper end of the ball screw 31 by a set screw. The elastic coupling 44 can effectively compensate for the coaxiality error generated during the installation process, reduce the vibration during the power transmission process, and ensure the smoothness of the transmission. The drive motor 41 is a servo motor, which is electrically connected to the control module through wires and can realize forward and reverse rotation and speed adjustment according to the control signal.
[0023] Furthermore, the control module includes: an electrical control cabinet and a controller; the controller is installed in the electrical control cabinet and is electrically connected to the drive motor 41 and the detection module 6 respectively.
[0024] In this embodiment, the electrical control cabinet is welded from cold-rolled steel plate and can be installed on the side of the mounting base 1 or on the frame of the printing machine. It integrates electrical components such as circuit breakers, relays, and terminals to provide a safe and stable working environment for the controller. The controller can be a microcontroller, MCU, or PLC. In this embodiment, a PLC controller is selected. The PLC controller is electrically connected to the control terminal of the drive motor and the signal output terminal of the photoelectric sensor through wires. It is installed inside the electrical control cabinet through a fixed bracket. The signal input terminal of the controller is connected to the signal output terminal of the photoelectric sensor 61 through wires, and the signal output terminal is connected to the control terminal of the drive motor 41 through wires. It can realize precise control of the start, stop, forward and reverse rotation, and speed of the drive motor 41, and at the same time receive the feedback signal from the photoelectric sensor 61 to complete the closed-loop control of height adjustment.
[0025] Furthermore, the detection module 6 includes: a photoelectric sensor 61; the photoelectric sensor 61 is installed in the mounting cavity 5 and located in the gap between the mounting base 1 and the fixing block 2; the fixing block 2 is provided with a sensing sheet 7 corresponding to the photoelectric sensor 61.
[0026] In this embodiment, as Figure 1-2 As shown, the photoelectric sensor 61 is a diffuse reflection photoelectric switch, which is fixedly mounted on the side wall of the mounting cavity 5 by a bracket, with its sensing end facing the fixed block 2. The installation position is located within the gap between the mounting base 1 and the fixed block 2, ensuring that the detection process is not interfered with by other components. A sensing sheet 7 corresponding to the photoelectric sensor 61 is fixed to the side wall of the fixed block 2 by screws. The sensing sheet 7 is made of opaque metal sheet, and its size matches the sensing range of the photoelectric sensor 61. When the fixed block 2 moves up and down, the sensing sheet 7 moves synchronously with it. The photoelectric sensor 61 generates an electrical signal by detecting the position change of the sensing sheet 7 and transmits the signal to the control module in real time, providing data support for the closed-loop control of height adjustment.
[0027] Furthermore, two slide rails 8 are symmetrically arranged on the two side walls of the mounting cavity 5; sliders 9 adapted to the slide rails 8 are arranged on both sides of the fixing block 2; the sliders 9 are slidably connected to the slide rails 8; and limit blocks 10 are respectively provided at the bottom of the two slide rails 8.
[0028] In this embodiment, as Figure 1-2As shown, to ensure the straightness of the vertical movement of the fixed block 2, two parallel slide rails 8 are symmetrically fixed to the two opposite side walls of the mounting cavity 5 by bolts. The slide rails 8 are ball bearing linear slide rails, and their length is adapted to the height of the mounting cavity 5. Slider blocks 9 adapted to the slide rails 8 are fixed to the two side walls of the fixed block 2 by screws. The sliders 9 and the slide rails 8 form a sliding fit. The fit between the two effectively limits the lateral displacement of the fixed block 2 and ensures the smoothness of its movement. In addition, limit blocks 10 are fixed to the bottom of the two slide rails 8 by welding. The limit blocks 10 are made of hard alloy, and their upper end faces correspond to the lower end faces of the sliders 9. When the fixed block 2 moves down to the lowest position, the sliders 9 and the limit blocks 10 abut against each other to form a mechanical limit and prevent the fixed block 2 from moving down too far and causing damage to the components.
[0029] This utility model discloses an adjustment mechanism for the horizontal print head of a printing machine. It adopts ball screw transmission instead of traditional transmission belt transmission. The ball screw has the characteristics of high transmission efficiency and small backlash, which can achieve precise control of the moving distance of the fixed block, thereby ensuring the relative positional accuracy between the horizontal print head and the printing substrate. It effectively solves the problems of insufficient printing clarity and uneven ink layer caused by low transmission accuracy of traditional mechanisms. It is especially suitable for fine printing scenarios such as precision circuit printing and high-resolution pattern printing.
[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. An adjustment mechanism for the horizontal print head of a printing press, characterized in that, include: The system comprises a mounting base, a fixing block for connecting to the horizontal print head of a printing press, a lead screw drive module for driving the fixing block up and down, a drive module for driving the lead screw drive module, a detection module for detecting the lifting height of the fixing block, and a control module. The mounting base has a mounting cavity. The fixing block is slidably mounted within the mounting cavity. The lead screw drive module is rotatably mounted within the mounting cavity, and its output end is connected to the fixing block. The drive module is mounted on the top of the mounting base, and its output end passes through the top of the mounting base and is placed within the mounting cavity, where it is connected to the input end of the lead screw drive module. The detection module is mounted within the mounting cavity and located on one side of the fixing block. The control module is electrically connected to both the drive module and the detection module.
2. The horizontal printhead adjustment mechanism for a printing press according to claim 1, characterized in that, The ball screw drive module includes: a ball screw, an upper bearing housing, a lower bearing housing, and a ball nut adapted to the ball screw; the upper and lower bearing housings are spaced apart from top to bottom within the mounting cavity; the inner wall of the lower end of the ball screw abuts against the inner wall of the lower bearing housing, and its upper end passes through the upper bearing housing and is connected to the output end of the drive module; the outer wall of the ball screw abuts against the inner wall of the upper bearing housing; the ball nut is mounted on the ball screw and located in the gap between the lower and upper bearing housings; the ball nut is fixedly connected to the fixing block.
3. The horizontal printhead adjustment mechanism for a printing press according to claim 2, characterized in that, The bottom of the upper bearing housing is provided with a buffer pad that can abut against the ball nut; the upper end of the lower bearing housing is provided with an elastic impact post that can abut against the ball nut.
4. The horizontal printhead adjustment mechanism for a printing press according to claim 2, characterized in that, The drive module includes: a drive motor, a reducer, a motor mount, and a coupling; the motor mount is installed in the mounting cavity and is fixedly connected to the upper end of the upper bearing seat; the reducer is fixedly connected to the motor mount, and its assembly end passes through the top of the mounting seat and is fixedly connected to the drive motor, and its input end is drive-connected to the output end of the drive motor; the output end of the reducer is drive-connected to the input end of the coupling; the output end of the coupling is drive-connected to the input end of the ball screw; the drive motor is electrically connected to the control module.
5. The horizontal printhead adjustment mechanism for a printing press according to claim 4, characterized in that, The control module includes an electrical control cabinet and a controller; the controller is installed inside the electrical control cabinet and is electrically connected to the drive motor and the detection module respectively.
6. The horizontal printhead adjustment mechanism for a printing press according to claim 5, characterized in that, The detection module includes: a photoelectric sensor; the photoelectric sensor is installed in the mounting cavity and located in the gap between the mounting base and the fixing block; the fixing block is provided with a sensing sheet corresponding to the photoelectric sensor.
7. The horizontal printhead adjustment mechanism for a printing press according to claim 1, characterized in that, Two slide rails are symmetrically arranged on the two side walls of the mounting cavity; sliders adapted to the slide rails are arranged on both sides of the fixing block; the sliders are slidably connected to the slide rails; and limit blocks are respectively provided at the bottom of the two slide rails.