Printing ink recovery device of printing machine

Abstract

The printing ink recovery device comprises a machine frame, a printing roller support, a clamping mechanism and a lead screw sliding table are arranged on the machine frame, the printing roller support is opposite to the clamping support, the lead screw sliding table is arranged on one side of the printing roller support and the clamping support, and an ink scraping mechanism is arranged on the lead screw sliding table. A positioning seat which is arranged on the printing roller bracket and is driven by a servo motor to rotate is matched with the ink scraping mechanism, so that automatic rotation and ink scraping actions of the printing roller are realized, and the automation degree and the efficiency of ink recovery are obviously improved; therefore, labor intensity of manual operation is reduced, consistency and stability of ink recovery are improved, and improvement of printing quality and reduction of production cost are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a printing ink recovery device for a printing press. Background Art

[0002] In the printing industry, as a key component, the surface of the printing roller will inevitably adhere to dried ink during long-term use; these dried-up inks will not only affect the printing quality, but also shorten the service life of the printing roller and increase production costs.

[0003] When the existing ink recovery devices scrape the ink on the printing roller, there is generally a problem of low automation. Most of these devices rely on manual operation, which is not only inefficient, but also difficult to ensure the consistency of the scraping effect; in addition, with the continuous development of the printing industry, the diameters and specifications of printing rollers are becoming increasingly diverse, and when the existing recovery equipment processes printing rollers with different diameters, the adjustment of the scraper is often not flexible enough to meet the actual production requirements.

[0004] In view of the above problems, it is necessary to propose an ink recovery device that can automatically, efficiently and flexibly adapt to printing rollers with different diameters. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a printing ink recovery device for a printing press to solve the technical problems raised in the background art.

[0006] To achieve the above technical purpose, the technical solution of the utility model provides a printing ink recovery device for a printing press, which includes a frame, on which an ink roller support, a clamping mechanism and a lead screw slide are arranged. The ink roller support and the clamping support face each other, the lead screw slide is arranged on one side of the two, a scraping mechanism is arranged on the lead screw slide, a positioning seat and a servo motor for driving its rotation are arranged on the ink roller support, an adjusting seat coaxial with the positioning seat and with adjustable spacing is arranged on the clamping mechanism, the scraping mechanism includes a scraping support, on which a spraying cylinder and a scraping cylinder are arranged in sequence from top to bottom. A spraying mechanism is arranged on the piston rod of the spraying cylinder, the spraying mechanism is communicated with a solvent tank, and a scraper mechanism is arranged on the piston rod of the scraping cylinder.

[0007] Further, the scraper mechanism includes an adjusting support plate. A vertical slide rail is arranged below the adjusting support plate. A U-shaped frame is arranged on the slide rail. An adjusting screw is arranged on the adjusting support plate. The adjusting screw drives the U-shaped frame to move on the slide rail. A scraper support plate is arranged inside the U-shaped frame. One end of the scraper support plate is rotatably connected to the inner wall of the U-shaped frame, and the other end protrudes from the U-shaped frame and is provided with a scraper. An arc-shaped guiding hole is arranged on the side of the U-shaped frame. A positioning bolt is arranged in the arc-shaped guiding hole. The positioning bolt passes through the arc-shaped guiding hole and is connected to the scraper support plate.

[0008] Further, a guiding rod is arranged between the clamping mechanism and the printing roller support. The guiding rod is arranged above the positioning seat and is parallel to it. The spraying mechanism includes a swing plate and a connecting rod. The swing plate is slidably arranged on the guiding rod. Two ends of the connecting rod are respectively hinged to the upper end of the swing plate and the piston rod of the spraying cylinder. A solvent pipe communicating with the solvent tank is arranged at the lower end of the swing plate. Spraying holes are arranged on the pipe wall of the solvent pipe.

[0009] Further, the clamping mechanism includes an adjusting bracket. A translation seat is slidably arranged on the adjusting bracket. A plurality of positioning holes are arranged on the adjusting bracket. The translation seat is fixed to the adjusting bracket through the positioning holes. A clamping cylinder is arranged on the translation seat. The adjusting seat is rotatably arranged on the piston rod of the clamping cylinder.

[0010] Further, a flow guiding cover is arranged on the ink scraping support. The spraying mechanism and the scraper mechanism are both arranged inside the flow guiding cover. A confluence trough is arranged on the machine frame below the flow guiding cover.

[0011] Further, a scraper clamping plate is arranged on the scraper support plate. There are two scraper clamping plates to clamp and fix the scraper. The scraper clamping plate is slidably arranged on the scraper support plate and is fixed by bolts.

[0012] Compared with the prior art, the beneficial effects of the present utility model include:

[0013] 1. The present utility model realizes the automatic rotation and ink scraping actions of the printing roller through the cooperation of the positioning seat driven by the servo motor on the printing roller support and the ink scraping mechanism, thereby significantly improving the automation degree and efficiency of ink recovery. This not only reduces the labor intensity of manual operation but also improves the consistency and stability of ink recovery, contributing to improving the printing quality and reducing the production cost.

[0014] 2. The present utility model enables the position and angle of the scraper to be flexibly adjusted according to the diameter and specifications of the printing roller through structures such as the adjusting screw and the U-shaped frame. This design enhances the adaptability and flexibility of the ink recovery device, enabling it to meet the actual production needs of various printing rollers and further improving the ink recovery effect. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of an ink recovery device for a printing press provided by the present utility model;

[0016] Figure 2 is a schematic diagram of a blade scraping mechanism of an ink recovery device for a printing press provided by the present utility model;

[0017] Figure 3 is a schematic diagram of a doctor blade mechanism of an ink recovery device for a printing press provided by the present utility model;

[0018] Figure 4 is a schematic diagram of a clamping mechanism of an ink recovery device for a printing press provided by the present utility model. Detailed Description of the Preferred Embodiment

[0019] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Refer to Figure 1 , the present utility model provides an ink recovery device for a printing press, which includes a frame 1. A printing roller bracket 2, a clamping mechanism 5 and a lead screw slide 3 are arranged on the frame 1. The printing roller bracket 2 and the clamping mechanism 5 face each other and are used to clamp and fix the printing roller 7. The lead screw slide 3 is arranged on one side of the printing roller bracket 2 and the clamping mechanism 5, and a blade scraping mechanism 4 is installed on the lead screw slide 3 to drive it to move horizontally.

[0021] A positioning seat 202 and a servo motor 201 for driving its rotation are arranged on the printing roller bracket 2. An adjusting seat 506 coaxial with the positioning seat 202 is arranged on the clamping mechanism 5. The two clamp the printing roller 7 and make it rotate during the recovery process, so that the blade scraping mechanism 4 can better scrape off the ink. A diversion cover 407 is installed on the blade scraping mechanism 4. During operation, the part of the printing roller 7 scraped by the diversion cover 407 is included therein to prevent the ink splashed during the scraping process from polluting the surrounding environment. A confluence trough 8 is arranged on the frame 1 below the diversion cover 407 for collecting the scraped ink; a guide rod 501 is arranged between the printing roller bracket 2 and the clamping mechanism 5, and the guide rod 501 is above the positioning seat 202,

[0022] Refer to Figure 2 、 Figure 3, the ink scraping mechanism 4 includes an ink scraping bracket 401. An ink spraying cylinder 403 and an ink scraping cylinder 402 are sequentially arranged on the ink scraping bracket 401 from top to bottom. A swinging plate 404 is slidably mounted on the guide rod 501. A connecting rod 405 is arranged between the ink spraying cylinder 403 and the swinging plate 404. Two ends of the connecting rod 405 are respectively hinged to the upper end of the swinging plate 404 and the piston rod of the ink spraying cylinder 403. A solvent pipe 406 communicating with the solvent tank is arranged at the lower end of the swinging plate 404. Spraying holes are arranged on the pipe wall of the solvent pipe 406. When the ink spraying cylinder 403 works, it will drive the swinging plate 404 to swing around the guide rod 501, so as to evenly spray the organic solvent in the solvent tank onto the surface of the printing roller 7 to soften the ink.

[0023] A scraper mechanism 6 is arranged on the piston rod of the ink scraping cylinder 402 for scraping the ink on the surface of the printing roller. The scraper mechanism 6 includes an adjusting support plate 601. A vertical slide rail 602 is arranged below the adjusting support plate 601. A U-shaped frame 603 is arranged on the slide rail 602. An adjusting screw 604 is arranged on the adjusting support plate 601. By adjusting the adjusting screw 604, the U-shaped frame 603 can be driven to move on the slide rail 602, so as to adjust the position of the scraper; a scraper support plate 605 is arranged inside the U-shaped frame 603. One end of the scraper support plate 605 is rotatably connected to the inner wall of the U-shaped frame 603, and the other end protrudes from the U-shaped frame 603 and is provided with a scraper 609. By adjusting the angle of the scraper support plate 605, the contact angle between the scraper 609 and the surface of the printing roller 7 can be further adjusted. An arc-shaped guide hole 606 is arranged on the side of the U-shaped frame 603. A positioning bolt 607 is arranged in the arc-shaped guide hole 606. The positioning bolt 607 passes through the arc-shaped guide hole 606 and is connected to the scraper support plate 605 for fixing the position of the scraper support plate 605; two scraper clamping plates 608 are arranged on the scraper support plate 605 to clamp and fix the scraper 609. The scraper clamping plates 608 are slidably arranged on the scraper support plate 605 and fixed by bolts. This enables the scraper 609 to be conveniently replaced or adjusted.

[0024] Refer to Figure 4 , the clamping mechanism 5 includes an adjusting bracket 502. A translation seat 504 is slidably arranged on the adjusting bracket 502. A number of positioning holes 503 are arranged on the adjusting bracket 502. The translation seat 504 is fixed to the adjusting bracket 502 through the positioning holes 503. This enables the position of the translation seat 504 to be adjusted according to the length of the printing roller. A clamping cylinder 505 is arranged on the translation seat 504. An adjusting seat 506 is rotatably arranged on the piston rod of the clamping cylinder 505. The printing roller 7 is clamped or released through the action of the clamping cylinder 505.

[0025] For the convenience of understanding the present invention, the working principle of this solution will be described in detail below in combination with Figure 1 - Figure 3 :

[0026] First, place the printing roller 7 of the ink to be recycled between the positioning seat 202 of the printing roller bracket 2 and the adjustment seat 506 of the clamping mechanism 5, and clamp and fix it through the action of the clamping cylinder 505; according to the length of the printing roller 7, the position of the clamping mechanism 5 can be adjusted by the positioning hole 503 and the translation seat 504 on the adjustment bracket 502 to ensure that both ends are evenly clamped; start the spraying cylinder 403, and its piston rod drives the swing plate 404 to swing around the guide rod 501 through the connecting rod 405. The solvent pipe 406 at the lower end of the swing plate 404 moves accordingly, and the organic solvent in the solvent tank is evenly sprayed onto the surface of the printing roller 7 through the spraying holes to soften the ink.

[0027] Before scraping the ink, according to the diameter and surface condition of the printing roller 7, the position and angle of the scraper 609 can be adjusted by adjusting the adjusting screw 604 in the scraper mechanism 6 and the positioning bolt 607 in the arc-shaped guide hole 606. Start the ink scraping cylinder 402, and its piston rod pushes the scraper mechanism 6 to move towards the surface of the printing roller 7 and scrape the ink thereon. The scraped ink falls into the lower confluence trough 8 under the guidance of the flow guide cover 407 for collection. The entire recycling process is automatically controlled through the control system, which has the advantages of high efficiency, strong adaptability, and good recycling effect.

[0028] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An ink recovery device for a printing press, comprising a frame, on which an impression roller bracket, a clamping mechanism and a lead screw slide are provided. The impression roller bracket and the clamping bracket face each other, and the lead screw slide is arranged on one side of the two. A scraping mechanism is arranged on the lead screw slide, and it is characterized in that: A positioning seat and a servo motor for driving its rotation are provided on the printing roller support. An adjusting seat coaxial with and adjustable in distance from the positioning seat is provided on the clamping mechanism. The ink scraping mechanism includes an ink scraping support. A spraying cylinder and an ink scraping cylinder are sequentially arranged on the ink scraping support from top to bottom. A spraying mechanism is provided on the piston rod of the spraying cylinder. The spraying mechanism is communicated with a solvent tank. A knife scraping mechanism is provided on the piston rod of the ink scraping cylinder.

2. The printing ink recovery device of a printing press according to claim 1, characterized in that: The knife scraping mechanism includes an adjusting support plate. A vertical slide rail is provided below the adjusting support plate. A U-shaped frame is arranged on the slide rail. An adjusting screw is provided on the adjusting support plate. The adjusting screw drives the U-shaped frame to move on the slide rail. A knife scraping support plate is arranged in the U-shaped frame. One end of the knife scraping support plate is rotatably connected to the inner wall of the U-shaped frame, and the other end protrudes from the U-shaped frame and is provided with a knife. An arc-shaped guide hole is provided on the side of the U-shaped frame. A positioning bolt is arranged in the arc-shaped guide hole. The positioning bolt passes through the arc-shaped guide hole and is connected to the knife scraping support plate.

3. The printing ink recovery device of a printing press according to claim 2, characterized in that: A guide rod is arranged between the clamping mechanism and the printing roller support. The guide rod is arranged above and parallel to the positioning seat. The spraying mechanism includes a swing plate and a connecting rod. The swing plate is slidably arranged on the guide rod. The two ends of the connecting rod are respectively hinged to the upper end of the swing plate and the piston rod of the spraying cylinder. A solvent pipe communicated with the solvent tank is arranged at the lower end of the swing plate. Spraying holes are arranged on the pipe wall of the solvent pipe.

4. A printing ink recovery device for a printing press according to claim 2 or 3, characterized in that: The clamping mechanism includes an adjusting support. A translation seat is slidably arranged on the adjusting support. A number of positioning holes are provided on the adjusting support. The translation seat is fixed to the adjusting support through the positioning holes. A clamping cylinder is arranged on the translation seat. The adjusting seat is rotatably arranged on the piston rod of the clamping cylinder.

5. The printing ink recovery device of a printing press according to claim 4, characterized in that: A flow guide cover is arranged on the ink scraping support. Both the spraying mechanism and the knife scraping mechanism are arranged in the flow guide cover. A confluence groove is arranged on the machine frame below the flow guide cover.

6. The printing ink recovery device of a printing press according to claim 5, characterized in that: A knife scraping clamp plate is arranged on the knife scraping support plate. There are two knife scraping clamp plates for clamping and fixing the knife. The knife scraping clamp plates are slidably arranged on the knife scraping support plate and fixed by bolts.

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