Printing machine scraper edge flatness detection device

Abstract

The utility model discloses a printing machine scraper edge flatness detection device which comprises a platform, ball guide pillar assemblies, a movable support, a fixed support and a hand-cranking lifting transmission lead screw assembly, the ball guide pillar assemblies are installed on the two sides of the platform, and the movable support is installed in the middles of the ball guide pillar assemblies. Meanwhile, a fixed support is installed at the top of the ball guide column assembly, the hand-cranking lifting transmission lead screw assembly sequentially penetrates through the fixed support and the movable support, the bottom of the hand-cranking lifting transmission lead screw assembly is connected to the platform, a limiting screw is installed on one side of the movable support, and a transition plate is connected to the extending position of the middle of the movable support; the device is low in manufacturing cost, easy to operate, capable of simulating the actual use pressure of the scraper for detection, high in detection reliability, capable of improving the printing quality of a printing machine, capable of detecting scrapers of various models at the same time, capable of saving cost for enterprise production and capable of improving efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of doctor blade inspection in the printing press industry, specifically involving the flatness inspection of the doctor blade edge of a printing press. Background Technology

[0002] On a printing press, the doctor blade, through proper angle and intensity, ensures that ink is evenly distributed onto the printing plate, leaving only the required amount. This avoids ink buildup and uneven coating during printing, thus improving printing accuracy and quality. However, an uneven doctor blade edge can lead to uneven ink scraping and transfer, resulting in decreased printing quality and defective prints. Therefore, the doctor blade edge needs to be inspected regularly to check its flatness and gaps, determining whether the doctor blade can continue to be used or needs replacement, and whether it can guarantee printing quality. Newly purchased doctor blades should also undergo quality inspection beforehand to screen out substandard blades and reduce printed defects caused by doctor blade quality issues. Utility Model Content

[0003] The purpose of this invention is to provide a device for detecting the flatness of the doctor blade edge in printing presses, in order to solve the problem that the existing doctor blade edges in the background art need to be inspected regularly to detect the flatness and gaps of the doctor blade edge, determine whether the doctor blade can continue to be used or needs to be replaced, and whether the printing quality can be guaranteed. For newly purchased doctor blades, the blade edge should also be inspected in advance to screen out unqualified doctor blades, thereby improving efficiency and reducing the problem of defective printed products caused by doctor blade quality issues.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a printing press doctor blade edge flatness detection device, comprising a platform, a ball bearing guide column assembly, a movable bracket, a fixed bracket, and a hand-cranked lifting transmission screw assembly. Ball bearing guide column assemblies are installed on both sides of the platform, and a movable bracket is installed in the middle of the ball bearing guide column assembly. A fixed bracket is installed on the top of the ball bearing guide column assembly. The hand-cranked lifting transmission screw assembly passes through the fixed bracket and the movable bracket sequentially, and its bottom is connected to the platform. A limit screw is installed on one side of the movable bracket, and a transition plate is connected to the extension in the middle of the movable bracket. A digital display pressure tester is installed on the left side of the movable bracket, and a lighting lamp is installed on the rear side of the platform.

[0005] Preferably, the ball guide post assembly includes a guide sleeve and a guide post, the guide sleeve is installed in the middle of the guide post, and the guide sleeve is fixedly connected to the movable bracket by screws.

[0006] Preferably, the hand-cranked lifting transmission screw assembly includes a screw seat, a screw, a guide threaded sleeve, a fixed seat, and a handwheel. The guide threaded sleeve is installed on the screw, and a handwheel is provided at the top of the screw. At the same time, a fixed seat that is fixed to the fixed bracket is installed between the guide threaded sleeve and the handwheel. The screw seat is installed at the bottom of the screw and is fixed to the platform by screws. The guide threaded sleeve is installed on the movable bracket by screws.

[0007] Preferably, a mounting plate is provided between the digital display pressure tester and the movable bracket, and the digital display pressure tester is fixed to the left side of the movable bracket by the mounting plate.

[0008] Preferably, the mounting plate has four elongated slots.

[0009] Preferably, the platform is made of marble and is inlaid with threaded sleeves.

[0010] Preferably, the two ends of the ball guide post assembly are fixed to the platform and the fixed bracket respectively by screws.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This inspection fixture is equipped with a ball guide post assembly, a movable bracket, a fixed bracket, a hand-cranked lifting transmission screw assembly, a limit screw, a transition plate, and a digital display pressure tester. It has low manufacturing cost, simple operation, and can simulate the actual operating pressure of the doctor blade for testing, resulting in high testing reliability. It controls the quality of the doctor blade edge, promptly detects unqualified doctor blades, avoids the production of unqualified products using unqualified doctor blades, and improves the printing quality of the printing press. At the same time, the transition plate can be used to replace and test various types of doctor blades, saving production costs and improving efficiency for enterprises. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the present invention in use;

[0014] Figure 3 This is an exploded view of the present invention;

[0015] Figure 4 This is a schematic diagram of the ball guide post assembly of this utility model;

[0016] Figure 5 This is an exploded view of the hand-cranked lifting transmission screw assembly of this utility model;

[0017] Figure 6 This is an exploded schematic diagram of the digital display pressure tester of this utility model.

[0018] In the diagram: 1. Platform; 2. Ball bearing guide post assembly; 3. Movable bracket; 4. Fixed bracket; 5. Hand-cranked lifting transmission screw assembly; 6. Limit screw; 7. Transition plate; 8. Digital display pressure tester; 9. Lighting lamp; 101. Threaded sleeve; 201. Guide sleeve; 202. Guide post; 501. Screw seat; 502. Screw; 503. Guide threaded sleeve; 504. Fixed seat; 505. Handwheel; 801. Mounting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-6 This utility model provides a technical solution: a printing press doctor blade edge flatness detection device, including a platform 1 and a hand-cranked lifting transmission screw assembly 5. Ball bearing guide column assemblies 2 are installed on both sides of the platform 1, and a movable bracket 3 is installed in the middle of the ball bearing guide column assembly 2. A fixed bracket 4 is installed on the top of the ball bearing guide column assembly 2. The hand-cranked lifting transmission screw assembly 5 passes through the fixed bracket 4 and the movable bracket 3 in sequence, and its bottom is connected to the platform 1. A limit screw 6 is installed on one side of the movable bracket 3. The descent stroke of the movable bracket 3 is limited by adjusting the height of the limit screw 6. A transition plate 7 is connected to the extension in the middle of the movable bracket 3. The transition plate 7 is used to connect the doctor blade. A digital display pressure tester 8 is installed on the left side of the movable bracket 3. The digital display pressure tester 8 moves up and down with the movable bracket 3. A lighting lamp 9 is installed on the rear side of the platform 1. When the light is turned on, it is used to observe whether there is a light-transmitting gap between the doctor blade and the platform 1.

[0021] The ball bearing guide post assembly 2 in this example includes a guide sleeve 201 and a guide post 202. The guide sleeve 201 is installed in the middle of the guide post 202, and the guide sleeve 201 is fixedly connected to the movable bracket 3 by screws.

[0022] The hand-cranked lifting transmission screw assembly 5 in this example includes a screw seat 501, a screw 502, a guide threaded sleeve 503, a fixed seat 504, and a handwheel 505. The guide threaded sleeve 503 is installed on the screw 502, and the handwheel 505 is located at the top of the screw 502. At the same time, a fixed seat 504, which is fixed to the fixed bracket 4, is installed between the guide threaded sleeve 503 and the handwheel 505. The screw seat 501 is installed at the bottom of the screw 502, and the screw seat 501 is fixed to the platform 1 by screws. The guide threaded sleeve 503 is installed on the movable bracket 3 by screws, so that the hand-cranked lifting transmission screw assembly 5 can drive the movable bracket 3 to move.

[0023] In this example, a mounting plate 801 is provided between the digital display pressure tester 8 and the movable support 3. The digital display pressure tester 8 is fixed to the left side of the movable support 3 by the mounting plate 801. The bottom of the digital display pressure tester 8 can be pressed on the platform 1 to display the specific pressure value.

[0024] In this example, the mounting plate 801 has four elongated slots, which can be used to adjust the installation height of the digital pressure tester 8 according to actual needs.

[0025] In this example, platform 1 is made of marble and is fitted with threaded sleeve 101. According to the plan, platform 1 needs to be fitted with threaded sleeve 101 at a predetermined position to facilitate the fixing of various parts.

[0026] In this example, the two ends of the ball guide post assembly 2 are fixed to the platform 1 and the fixed bracket 4 respectively by screws.

[0027] Working principle: Before testing, first adjust the height of the digital display pressure tester 8 according to the height of the scraper to be tested. The mounting plate 801 has a long slot, which can be adjusted according to actual needs to adjust the installation height of the digital display pressure tester 8. After adjusting the height, rotate the handwheel 505 to move the digital display pressure tester 8 downward with the movable bracket 3. The bottom of the digital display pressure tester 8 presses down on the platform 1, and the digital display pressure tester 8 displays the specific pressure value. When the pressure value is adjusted to the scraper detection pressure value, stop rotating and tighten the limit screw 6 downward until it just contacts the platform 1, then lock it with the nut to limit the lowest pressing position. After setting, rotate the handwheel 505 to move the movable bracket 3 upward, and then move the scraper (such as...) upward. Figure 2 (at point b) via a connecting plate (such as...) Figure 2 The scraper is installed on the scraper transition plate 7 (the scraper has a threaded hole, and the corresponding mounting hole is provided on the connecting plate). It is connected by screws. Then, rotate the handwheel 505 downwards to press the scraper onto the platform 1 until the limit screw 6 reaches the platform 1. At this time, turn on the light 9 and observe whether there is light transmission between the scraper blade and the platform 1. If there is no light transmission, it means that the scraper blade is flat and qualified and can be used. If there is light transmission, it means that the scraper blade is not flat, has a gap or is deformed, and the scraper is unqualified and cannot be used. If testing the same model of scraper, simply replace the scraper for testing. If replacing with a different model of scraper (different scrapers may have different threaded hole positions, so you can replace and test by switching the corresponding connecting plate), adjust the corresponding pressure value in the same way and then test. This completes the whole work. The contents not described in detail in this manual are existing technologies known to those skilled in the art.

[0028] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model 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.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A print machine doctor blade kiss flatness detection device comprising a platform (1) and a hand crank lifting drive screw assembly (5), characterised in that: Both sides of the platform (1) are installed with ball guide column assemblies (2), and the middle of the ball guide column assemblies (2) is installed with movable supports (3), while the top of the ball guide column assemblies (2) is installed with fixed supports (4), the hand-operated lifting transmission screw rod assemblies (5) pass through the fixed supports (4) and the movable supports (3) in sequence, and the bottom of the hand-operated lifting transmission screw rod assemblies (5) is connected to the platform (1), one side of the movable support (3) is installed with a limiting screw rod (6), and the extension of the middle of the movable support (3) is connected with a transition plate (7), while the left side of the movable support (3) is installed with a digital pressure tester (8), and the rear side of the platform (1) is installed with a light (9).

2. The print doctor blade kiss roll flatness detection device of claim 1, wherein: The ball guide column assembly (2) comprises a guide sleeve (201) and a guide column (202), the middle of the guide column (202) is installed with the guide sleeve (201), and the guide sleeve (201) is fixedly connected with the movable support (3) through screws.

3. The print doctor blade kiss roll flatness detection device of claim 1, wherein: The hand-operated lifting transmission screw rod assembly (5) comprises a screw rod seat (501), a screw rod (502), a guide threaded sleeve (503), a fixed seat (504) and a hand wheel (505), the screw rod (502) is installed with the guide threaded sleeve (503), and the top of the screw rod (502) is provided with the hand wheel (505), while the fixed seat (504) fixed with the fixed support (4) is installed between the guide threaded sleeve (503) and the hand wheel (505), the bottom of the screw rod (502) is installed with the screw rod seat (501), and the screw rod seat (501) is fixed on the platform (1) through screws, and the guide threaded sleeve (503) is installed on the movable support (3) through screws.

4. The print doctor blade kiss roll flatness detection device of claim 1, wherein: The mounting plate (801) is arranged between the digital pressure tester (8) and the movable support (3), and the digital pressure tester (8) is fixed on the left side of the movable support (3) through the mounting plate (801).

5. The print doctor blade kiss roll flatness detection device of claim 4, wherein: The mounting plate (801) is provided with four long waist-shaped grooves.

6. The print doctor blade kiss roll flatness detection device of claim 1, wherein: The platform (1) is made of marble, and the platform (1) is inlaid with a threaded sleeve (101).

7. The print doctor blade kiss roll flatness detection device of claim 1, wherein: The both ends of the ball guide column assembly (2) are fixed on the platform (1) and the fixed support (4) through screws respectively.

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