A full runout detection device for a flexographic plate cylinder

Abstract

The utility model belongs to the technical field of soft printing plate roller detection, disclose a kind of full runout detection device for soft printing plate roller, including detection device ontology, two liftable mounting plates are provided on detection device ontology, plate roller assembly is provided between two mounting plates, one end of plate roller assembly is arranged in rotating assembly and is connected with the power output end of first motor transmission, detection device ontology is also provided with mounting bracket, mounting bracket is provided with linear motor group, one side of linear motor group is provided with sensor, rotating assembly, first motor, linear motor group and sensor are electrically connected with main controller;The utility model can solve the problem of low detection efficiency of traditional semi-automatic full-range coverage, give consideration to detection efficiency and detection accuracy, realize accurate positioning to flaw, and the detection history record of plate roller can be used for quality traceability, process optimization and preventive maintenance.

Description

Technical Field

[0001] This utility model relates to the field of flexographic printing roller detection technology, specifically a full runout detection device for flexographic printing rollers. Background Technology

[0002] As a core component in flexible printing, the surface precision of the flexographic printing roller directly determines the clarity, registration accuracy, and printing stability of the printed product. The total runout error of the roller surface is one of the key indicators affecting printing precision. Excessive total runout error can lead to uneven ink transfer, pattern deformation, and registration deviation during the printing process, which seriously affects the quality of printed products, and may even cause batches of scrap, increasing production costs.

[0003] Currently, there are many types of full runout detection devices for flexographic printing rollers in the industry. Traditional detection methods are mainly divided into two categories: manual detection and semi-automatic detection. Manual detection relies on operators to manually measure with tools such as dial indicators and micrometers. This is not only labor-intensive and inefficient, but the detection results are also easily affected by human operating experience and subjective judgment, making it difficult to guarantee accuracy and failing to meet the detection needs of mass production. Semi-automatic detection devices mostly adopt full-range coverage detection, scanning the roller surface point by point with sensors. Although this can improve detection accuracy, the detection process is cumbersome and time-consuming, making it difficult to balance detection efficiency and detection accuracy. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a full-range runout detection device for flexographic printing rollers. This device can solve the problem of low efficiency of traditional semi-automatic full-range coverage detection, and balance detection efficiency and detection accuracy. It can achieve precise positioning of defects, and the detection history of the printing roller can be used for quality traceability, process optimization and preventive maintenance.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A full runout detection device for flexographic printing rollers includes a detection device body with two liftable mounting plates on the detection device body. A printing roller assembly is disposed between the two mounting plates. One end of the printing roller assembly is disposed in a rotating assembly and is drivenly connected to the power output end of a first motor. The detection device body is also provided with a mounting frame, on which a linear motor assembly is disposed. A sensor is disposed on one side of the linear motor assembly. The rotating assembly, the first motor, the linear motor assembly, and the sensor are all electrically connected to a main controller.

[0006] The following are further optimizations of the above technical solution by this utility model: The printing roller assembly includes a printing roller mandrel and a sleeve fitted on the printing roller mandrel. One end of the printing roller mandrel is rotatably connected to one of the mounting plates and locked by a cylinder. The other end of the printing roller mandrel is rotatably connected in the rotating assembly and is driven by the power output end of the first motor.

[0007] Further optimization: The rotating assembly includes a support assembly mounted on one of the mounting plates, and the support assembly is connected to the spindle support assembly via a rotating shaft.

[0008] Further optimization: The linear motor assembly includes a slide rail, a slider, a stator, and a mover mounted on a mounting bracket, with the sensor mounted at the lower end of the slider.

[0009] Further optimization: The sensor moves along the axis of the sleeve, and the sensor's scanning point on the sleeve is a spiral line along the axis of the sleeve.

[0010] Further optimization: The sensor moves along the axis of the sleeve, and the sensor scans the sleeve by multiple parallel lines along the axis of the sleeve.

[0011] This utility model adopts the above-mentioned technical solution, with ingenious conception and reasonable structure. By linking the laser sensor with the linear motor group and the first motor, it detects the surface of the sleeve with a spiral or multiple parallel line trajectory. While achieving full coverage, it shortens the detection path, and synchronously adjusts the speed to ensure data accuracy, balancing efficiency and precision to help improve printing quality. At the same time, it is highly efficient in defect location. The main controller can process and analyze the detection data in real time and compare it with historical data. Relying on the spiral or multiple parallel line trajectory, it can quickly locate defects, providing accurate guidance for subsequent repair or replacement, reducing unnecessary work. Moreover, the device is fully automated and easy to operate, and is suitable for industrial-scale continuous inspection operations.

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a front view of an embodiment of the present utility model.

[0014] In the diagram: 1. Detection device body; 2. Mounting plate; 3. Printing roller assembly; 301. Printing roller spindle; 302. Sleeve; 303. Cylinder; 4. Rotating assembly; 401. Support assembly; 402. Rotating shaft; 403. Spindle support assembly; 5. First motor; 6. Mounting frame; 7. Linear motor assembly; 701. Slide rail; 702. Slider; 703. Stator; 704. Mover; 8. Sensor. Detailed Implementation

[0015] like Figure 1-2 As shown: A full runout detection device for flexographic printing rollers includes a detection device body 1, two liftable mounting plates 2 on the detection device body 1, a printing roller assembly 3 between the two mounting plates 2, one end of the printing roller assembly 3 being disposed in a rotating assembly 4 and connected to the power output end of a first motor 5, a mounting frame 6 on the detection device body 1, a linear motor assembly 7 on the mounting frame 6, and a sensor 8 on one side of the linear motor assembly 7. The rotating assembly 4, the first motor 5, the linear motor assembly 7 and the sensor 8 are all electrically connected to a main controller.

[0016] In this embodiment, the sensor 8 is a laser displacement sensor.

[0017] The printing roller assembly 3 includes a printing roller core shaft 301 and a sleeve 302 sleeved on the printing roller core shaft 301. One end of the printing roller core shaft 301 is rotatably connected to one of the mounting plates 2 and locked by a cylinder 303. The other end of the printing roller core shaft 301 is rotatably connected in the rotating assembly 4 and is connected to the power output end of the first motor 5.

[0018] In this embodiment, the cylinder 303 is electrically connected to the main controller, and the power output end of the cylinder 303 is connected to a latch. By starting and stopping the cylinder 303, one end of the printing roller core 301 can be locked on the mounting plate 2 or unlocked from the mounting plate 2, which facilitates the loading and unloading of the sleeve 302.

[0019] The rotating assembly 4 includes a support assembly 401 mounted on one of the mounting plates 2, and the support assembly 401 is connected to the spindle support assembly 403 via a rotating shaft 402.

[0020] In this embodiment, the rotating shaft 402 is bolted to the spindle support assembly 403.

[0021] In use, the first motor 5 is controlled by the main controller to start, stop and speed of the first motor 5, thereby controlling the rotation rhythm of the printing roller core shaft 301, which is convenient to use.

[0022] The linear motor assembly 7 includes a slide rail 701, a slider 702, a stator 703, and a mover 704 mounted on a mounting bracket 6, and a sensor 8 is mounted on the lower end of the slider 702.

[0023] The sensor 8 moves along the axis of the sleeve 302, and the scanning point of the sensor 8 on the sleeve 302 is a spiral line along the axis of the sleeve 302.

[0024] The sensor 8 moves along the axis of the sleeve 302, and the scanning points of the sensor 8 on the sleeve 302 are multiple parallel lines along the axis of the sleeve 302.

[0025] In use, the operator first inserts the sleeve 302 into the printing roller core 301, then slides the rotating printing roller assembly 3 into the mounting plate 2. Next, the main controller activates the cylinder 303 to lock the printing roller core 301. At this time, the main controller is operated to start the first motor 5 and the linear motor group 7. Under the action of the linear motor group 7, the sensor 8 moves from above one end of the sleeve 302 to above the other end. Controlling the translational speed of the sensor 8 and the rotation of the printing roller core 301 allows the sensor 8 to measure the surface of the sleeve 302. The trajectory of the measurement point is a spiral line or a line in the same direction as the printing roller core 301. Multiple parallel lines are used to transmit measurement data to the main controller. The data from the fluctuation detected by sensor 8 is processed, analyzed, and stored, and compared with previously stored data. This effectively identifies defects and flaws on the surface of sleeve 302, facilitating repair or replacement by staff and ensuring the efficiency and quality of subsequent printing. Compared to traditional full-range detection, spiral line detection or multiple parallel lines can balance detection efficiency with quality. By analyzing the data from the spiral line or multiple parallel line trajectories and comparing it with previous data, defects on sleeve 302 can be quickly detected and located, making it convenient to use.

[0026] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A full-jog detection device for a flexographic plate cylinder, characterized by: The device includes a detection device body (1), on which two liftable mounting plates (2) are provided. A printing roller assembly (3) is provided between the two mounting plates (2). One end of the printing roller assembly (3) is located inside the rotating assembly (4) and is connected to the power output end of the first motor (5). The detection device body (1) is also provided with a mounting frame (6). A linear motor assembly (7) is provided on the mounting frame (6). A sensor (8) is provided on one side of the linear motor assembly (7). The rotating assembly (4), the first motor (5), the linear motor assembly (7) and the sensor (8) are all electrically connected to the main controller.

2. A full runout detection device for a flexographic plate cylinder according to claim 1, characterized in that: The printing roller assembly (3) includes a printing roller spindle (301) and a sleeve (302) sleeved on the printing roller spindle (301). One end of the printing roller spindle (301) is rotatably connected to one of the mounting plates (2) and locked by a cylinder (303). The other end of the printing roller spindle (301) is rotatably connected in the rotating assembly (4) and is connected to the power output end of the first motor (5).

3. The full runout detection device for flexographic printing rollers according to claim 2, characterized in that: The rotating assembly (4) includes a support assembly (401) mounted on one of the mounting plates (2), and the support assembly (401) is connected to the spindle support assembly (403) via a rotating shaft (402).

4. A full runout detection device for a flexographic plate cylinder according to claim 3, characterized in that: The linear motor assembly (7) includes a slide rail (701), a slider (702), a stator (703), and a mover (704) mounted on a mounting bracket (6), and a sensor (8) is mounted on the lower end of the slider (702).

5. A full runout detection device for a flexographic plate cylinder according to claim 4, characterized in that: The sensor (8) moves along the axis of the sleeve (302) and the scanning point of the sensor (8) on the sleeve (302) is a spiral line along the axis of the sleeve (302).

6. The full runout detection device for flexographic printing rollers according to claim 4, characterized in that: The sensor (8) moves along the axis of the sleeve (302), and the scanning point of the sensor (8) on the sleeve (302) is multiple parallel lines along the axis of the sleeve (302).

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