Corrosion resistance testing device for printing roller

Abstract

The utility model relates to a corrosion resistance testing device for a plate roller, which comprises a testing box, a testing cavity with a forward opening is arranged in the testing box, a sealing door is hinged to the front side of the testing box, a lifting frame capable of moving up and down is arranged in the testing cavity, and placing frames capable of moving oppositely are arranged on the lifting frame in a bilateral symmetry manner; the lower side of the testing cavity is provided with a telescopic scribing tool assembly capable of moving left and right, the testing box is provided with a control table, after the plate roller is exposed in salt mist for at least 24 hours, a scraper slides on the surface of the plate roller, and when a tester observes the shape of the surface of the plate roller after testing is finished, the surface of the plate roller is scraped by the scraper. The shape of the surface of the plate roller after corrosion can be observed, and meanwhile, whether the mechanical strength of the surface of the plate roller after corrosion is qualified or not can be judged according to the characters of the scratches, so that the test result is more comprehensive, and a technician can judge the corrosion resistance of the plate roller more accurately.

Description

Technical Field

[0001] This utility model relates to printing rollers, and in particular to a corrosion resistance testing device for printing rollers. Background Technology

[0002] Printing rollers are frequently exposed to ink, cleaning agents, and water vapor, which may contain acidic or alkaline components. Long-term exposure to these components can easily lead to corrosion of the metal surface of the printing rollers. To address this, manufacturers have developed corrosion-resistant printing rollers. In order to ensure product quality and corporate reputation, different batches of printing rollers are sampled and subjected to corrosion resistance testing before leaving the factory.

[0003] Existing corrosion resistance testing methods typically involve placing the printing roller inside a sealed space, spraying corrosive mist into the sealed space, and then observing the surface shape of the printing roller after it has been left to stand for a period of time to determine its corrosion resistance. However, the above method does not allow testers to observe the mechanical properties of the printing roller after it has been corroded. To address this issue, we propose a corrosion resistance testing device for printing rollers. Utility Model Content

[0004] This invention proposes a corrosion resistance testing device for printing rollers, which solves the aforementioned problems existing in the use of existing technologies.

[0005] The technical solution of this utility model is implemented as follows: a corrosion resistance testing device for printing rollers includes a test box, a test chamber with an opening facing forward inside the test box, a sealing door hinged to the front side of the test box, a lifting frame that can move up and down inside the test chamber, a first drive mechanism for driving the lifting frame installed inside the test chamber, and placement frames that can move towards each other symmetrically arranged on the lifting frame.

[0006] The lower side of the test chamber is provided with a telescopic paddle assembly that can move left and right, and a second drive mechanism for driving the telescopic paddle assembly is installed inside the test chamber.

[0007] The test box is equipped with a control console;

[0008] An input tube is connected to the rear wall of the test chamber, and an output tube is connected to the inner side wall of the test chamber.

[0009] A further feature of this invention is that the first drive mechanism includes two first lead screws, which are symmetrically connected to the upper side wall of the test chamber, and the lifting frame is threadedly connected to both first lead screws.

[0010] The test box is equipped with a synchronization mechanism for driving the two lead screws.

[0011] A further feature of this invention is that the synchronization mechanism includes a mounting frame fixed to the upper side of the test box, the upper sides of the two lead screws are rotatably connected to the mounting frame, and a motor for driving the lead screws is mounted on the mounting frame.

[0012] Both of the two lead screws are fixed with synchronous pulleys, and a synchronous belt connects the two synchronous pulleys together.

[0013] A further feature of this invention is that: a first electric cylinder is symmetrically installed on the lifting frame, and the two placement frames are respectively fixedly connected to the output shaft end of the first electric cylinder; and sliding grooves are symmetrically opened inside the lifting frame to allow the two placement frames to move left and right.

[0014] A further feature of this invention is that the second drive mechanism includes a second lead screw;

[0015] A mounting base is fixed to the rear side of the test chamber, and a mounting groove is opened in the mounting base. The second lead screw is rotatably connected to the mounting groove, and a second motor for driving the second lead screw is installed on the test box.

[0016] A further feature of this invention is that the telescopic sliding tool assembly includes a slide block threaded onto the second lead screw, a second electric cylinder is installed inside the slide block, a blade holder is fixedly connected to the end of the output shaft of the second electric cylinder, and a scraper is fixedly provided on the upper side of the blade holder, the scraper being made of ceramic material.

[0017] A further feature of this invention is that the clamping assembly includes a horizontal plate, a screw is internally threaded onto the horizontal plate, and a pressure plate is rotatably connected to the lower end of the screw.

[0018] A rotating handle is fixedly connected to the upper end of the screw.

[0019] In summary, the beneficial effects of this utility model are as follows:

[0020] After the printing roller is exposed to salt spray for at least 24 hours, a scraper is used to scratch its surface. When the tester observes the surface shape of the printing roller after the test, the shape of the printing roller surface after corrosion can be observed. At the same time, the mechanical strength of the printing roller surface after corrosion can be judged by the characteristics of the scratches, so that the test results are more comprehensive and the technicians can make a more accurate judgment on the corrosion resistance of the printing roller.

[0021] The scraper is made of ceramic, which has high hardness and good corrosion resistance. It is not easily corroded even when exposed to salt spray environment for a long time, thus avoiding the scraper from affecting the test results and causing errors in the test. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 for Figure 1 A structural diagram after the sealing door is removed;

[0025] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0026] The following are labeled in the diagram: 11. Test box; 12. Test chamber; 13. Sealed door; 14. Lifting frame; 15. Placement frame; 16. Control console; 17. Lead screw No. 1; 18. Mounting frame; 19. Motor No. 1; 20. Synchronous pulley; 21. Synchronous belt; 22. Electric cylinder No. 1; 23. Slide groove; 24. Lead screw No. 2; 25. Mounting base; 26. Mounting groove; 27. Motor No. 2; 28. Slide; 29. ​​Electric cylinder No. 2; 30. Tool holder; 31. Scraper; 32. Input pipe; 33. Output pipe; 34. Horizontal plate; 35. Screw; 36. Pressure plate; 37. Rotating handle. Detailed Implementation

[0027] The following will refer to the appendix in the embodiments of this utility model. Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example:

[0029] like Figures 1 to 3As shown, a corrosion resistance testing device for printing rollers includes a test chamber 11, with a test cavity 12 opening forward inside the test chamber 11. A sealing door 13 is hinged to the front side of the test chamber 11. A control console 16 is installed on the test chamber 11. An input pipe 32 is connected to the rear wall of the test cavity 12, and an output pipe 33 is connected to the right side wall of the test cavity 12. Both the input pipe 32 and the output pipe 33 are connected to an external circulating air supply device (not shown in the figure) to facilitate the circulation air supply device to deliver salt spray into the test cavity 12 and absorb and filter salt spray. A salt spray concentration detector (not shown in the figure) is installed in the test cavity 12 and electrically connected to the control console 16 to monitor the salt spray concentration in the test cavity 12 in real time.

[0030] Two lead screws 17 are symmetrically connected to the upper side wall of the test chamber 12. A synchronization mechanism for driving the two lead screws 17 to rotate synchronously is installed on the test box 11. A lifting frame 14 is threadedly connected to the two lead screws 17. Two electric cylinders 22 are symmetrically installed on the lifting frame 14. The output shaft ends of the two electric cylinders 22 are fixedly connected to a placement frame 15 for placing the printing roller. The clamping assembly includes a horizontal plate 34. A screw 35 is threadedly connected to the horizontal plate 34. A pressure plate 36 is rotatably connected to the lower end of the screw 35. A rotating handle 37 is fixedly connected to the upper end of the screw 35. Slide grooves 23 are symmetrically opened in the lifting frame 14 to allow the two placement frames 15 to move left and right.

[0031] Before the test begins, the technician controls the two lead screws 17 to rotate synchronously via the control console 16, thereby moving the lifting frame 14 downwards to facilitate the placement of the printing roller. Then, the technician controls the two electric cylinders 22 via the control console 16, moving the two placement frames 15 to the appropriate positions according to the length of the printing roller to be tested. Next, one side of the transverse printing roller is inserted obliquely between the pressure plate 36 and the inner curved surface of the placement frame 15 on the same side, with the placement frame 15 supporting the lower edge of the curved surface on the same side of the printing roller. Then, the other side of the printing roller is placed in the same manner between the pressure plate 36 and the inner curved surface of the placement frame 15 on the same side, with the placement frame 15 supporting the lower edge of the curved surface on the same side of the printing roller. The technician then rotates the rotating handle 37, causing the screw 35 to move the pressure plate 36 downwards until the pressure plate 36 abuts against the upper edge of the curved surface of the printing roller, thus fixing the printing roller.

[0032] The specific structure of the synchronization mechanism is as follows: The synchronization mechanism includes a mounting frame 18 fixed on the upper side of the test box 11. The upper sides of the two lead screws 17 are rotatably connected to the mounting frame 18. A motor 19 for driving the lead screws 17 is installed on the mounting frame 18. Synchronous pulleys 20 are fixed on both lead screws 17. A synchronous belt 21 is connected between the two synchronous pulleys 20. The motor 19 drives the lead screw 17 on one side to rotate. The lead screw 17 drives the lead screw 17 on the other side to rotate synchronously through the synchronous belt 21.

[0033] Furthermore, a mounting base 25 is fixedly provided on the rear side of the test chamber 12. A mounting groove 26 is provided in the mounting base 25. A second lead screw 24 is rotatably connected in the mounting groove 26. A second motor 27 for driving the second lead screw 24 is installed on the test box 11. A slide 28 is threadedly connected to the second lead screw 24. A second electric cylinder 29 is installed in the slide 28. A knife holder 30 is fixedly connected to the end of the output shaft of the second electric cylinder 29. A scraper 31 is fixedly provided on the upper side of the knife holder 30. The scraper 31 is made of ceramic material, which has high hardness and excellent corrosion resistance to avoid the scraper 31 being corroded by salt spray, resulting in inaccurate test results. Before the test begins and during the test, the scraper 31 is located on the rear side of the test chamber 12 to avoid the scraper 31 scratching the surface of the printing roller when the technician places the printing roller, thereby causing errors in the test results. A pressure sensor (not shown in the figure) electrically connected to the control console 16 is installed in the knife holder 30.

[0034] It should also be noted that the rear sidewall of the slide block 28 abuts against the rear sidewall of the mounting mechanism 26, thereby limiting the slide block 28 so that it cannot rotate with the second lead screw 24. The pressure sensor is a technical means well known to those skilled in the art, so its structure will not be described in detail here.

[0035] The working principle of this utility model is as follows: After the technician places the printing roller on the two placement frames 15, the lifting frame 14 drives the printing roller to move upward. Then the technician closes the sealing door 13 and controls the input pipe 32 to deliver salt spray into the test chamber 12 through the control console 16 until the salt spray fills the test chamber 12. The printing roller is then left to stand in the test chamber 12 filled with salt spray for at least 24 hours.

[0036] After the printing roller has been exposed to salt spray for at least 24 hours, the technician first controls the lifting frame 14 to move upward via the control console 16, and moves the slide block 28 below the lower left edge of the printing roller via the second lead screw 24. Then, the scraper 31 is moved to directly below the lower left edge of the printing roller via the second electric cylinder 29. Subsequently, the lifting frame 14 is moved downward until the upper edge of the scraper 31 abuts against the lower curved edge of the printing roller. At this time, the technician controls the second lead screw 24 to rotate via the control console 16, so that the slide block 28 drives the scraper 31 to slide from left to right along the lower curved edge of the printing roller, and the pressure sensor transmits the data to the control console 16.

[0037] After the scraper 31 finishes its stroke, the lifting frame 14 moves upward, and the circulating air supply device purifies the salt mist in the test chamber 12. After purification, the technician opens the sealing door 13 and observes the surface shape of the printing roller, the data displayed on the control panel 16, and the depth of the scratches, thereby determining whether the corrosion resistance of the printing roller and the mechanical strength of the printing roller surface after corrosion are up to standard.

[0038] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrosion resistance testing device for printing rollers, comprising a testing chamber (11), characterized in that: The test chamber (11) has a test cavity (12) with the opening facing forward. A sealing door (13) is hinged to the front side of the test chamber (11). A lifting frame (14) that can move up and down is provided in the test cavity (12). A first drive mechanism for driving the lifting frame (14) is installed in the test cavity (12). Placement frames (15) that can move towards each other are symmetrically arranged on the lifting frame (14). A clamping assembly is installed on the placement frame (15). The test chamber (12) is provided with a telescopic paddle assembly that can move left and right on its lower side, and a second drive mechanism for driving the telescopic paddle assembly is installed inside the test chamber (12). The test box (11) is equipped with a control console (16). An input tube (32) is connected to the rear side wall of the test chamber (12), and an output tube (33) is connected to the right side wall of the test chamber (12).

2. The corrosion resistance testing device for printing rollers according to claim 1, characterized in that: The first drive mechanism includes two first lead screws (17), which are symmetrically connected to the upper side wall of the test chamber (12). The lifting frame (14) is threadedly connected to both first lead screws (17). The test box (11) is equipped with a synchronization mechanism for driving the two lead screws (17).

3. The corrosion resistance testing device for printing rollers according to claim 2, characterized in that: The synchronization mechanism includes a mounting bracket (18) fixed on the upper side of the test box (11), and the upper sides of the two lead screws (17) are rotatably connected to the mounting bracket (18). A motor (19) for driving the lead screws (17) is mounted on the mounting bracket (18). Both of the first lead screws (17) are fixed with synchronous pulleys (20), and the two synchronous pulleys (20) are connected by a synchronous belt (21).

4. The corrosion resistance testing device for printing rollers according to claim 1, characterized in that: The lifting frame (14) is symmetrically equipped with a first electric cylinder (22), and the two placement frames (15) are respectively fixedly connected to the end of the output shaft of the first electric cylinder (22). The lifting frame (14) is symmetrically opened with sliding grooves (23) for the two placement frames (15) to move left and right.

5. The corrosion resistance testing device for printing rollers according to claim 1, characterized in that: The second drive mechanism includes a second lead screw (24). The test chamber (12) is fixedly provided with a mounting base (25) on the rear side. The mounting base (25) is provided with a mounting groove (26). The second lead screw (24) is rotatably connected in the mounting groove (26). The test box (11) is equipped with a second motor (27) for driving the second lead screw (24).

6. The corrosion resistance testing device for printing rollers according to claim 5, characterized in that: The telescopic tool assembly includes a slide (28) threaded onto the second lead screw (24), a second electric cylinder (29) is installed inside the slide (28), a knife holder (30) is fixedly connected to the end of the output shaft of the second electric cylinder (29), and a scraper (31) is fixedly provided on the upper side of the knife holder (30), the scraper (31) is made of ceramic material.

7. The corrosion resistance testing device for printing rollers according to claim 1, characterized in that: The clamping assembly includes a horizontal plate (34), a screw (35) is internally threaded onto the horizontal plate (34), and a pressure plate (36) is rotatably connected to the lower end of the screw (35). A rotating handle (37) is fixedly connected to the upper end of the screw (35).

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