An inking device for a gravure press

Abstract

This utility model discloses a doctor blade device for a gravure printing machine, including a frame, a gravure roller, an ink tank, a telescopic cylinder, and a horizontal adjustment frame. The gravure roller is pivotally mounted on the frame and connected to a rotary motor. The lower part of the gravure roller is immersed in the ink tank and can be driven by the rotary motor to penetrate the wall of the gravure roller, and rotates clockwise. The frame is provided with a base, and a vertical seat is vertically slidably mounted on the upper wall of the base. The base is provided with a vertical drive device for driving the vertical seat to move vertically. At least two telescopic cylinders are provided, and the lower part of the telescopic cylinder is pivotally mounted on the vertical seat. The drive end of the telescopic cylinder is pivotally connected to an inclined adjustment seat, and the lower end of the inclined adjustment seat is pivotally mounted on the frame. The horizontal adjustment frame is mounted on the inclined adjustment seat and is used to drive the doctor blade to move between a position close to the gravure roller and a position far away from the gravure roller. The doctor blade is located at the upper part of the rear position of the gravure roller.

Description

Technical Field

[0001] This utility model relates to the field of cigarette label processing equipment, and in particular to a gravure printing machine ink scraping device. Background Technology

[0002] Cigarette labels (i.e. cigarette boxes) are generally printed using gravure printing machines during the manufacturing process.

[0003] Among them, gravure printing machines are industrial equipment with gravure printing technology as their core. They are mainly used for mass printing of flexible packaging materials (such as plastic film, paper, etc.), and have the characteristics of thick ink layer and high color saturation. They are suitable for printing composite materials such as food packaging and beverage labels.

[0004] Existing gravure printing rollers generally need to be used in conjunction with doctor blades to achieve uniform ink layer distribution. However, existing doctor blades mainly use manual adjustment or single cylinder adjustment, which can easily lead to inconsistent gaps between the doctor blade and the gravure printing roller. This affects the printing stability of cigarette labels (such as ink thickness and texture clarity). The stability of the printed colors of cigarette labels affects the anti-counterfeiting effect of cigarette labels and the ability to distinguish products. Therefore, the coordination between the doctor blade and the gravure printing roller is particularly critical. Utility Model Content

[0005] The main purpose of this invention is to propose a doctor blade device for a gravure printing machine, which aims to improve the fitting accuracy (or spacing accuracy) between the doctor blade and the gravure roller by adopting a multi-cylinder and multi-axis adjustment structure, while also improving stability and thus enhancing printing stability.

[0006] To achieve the above objectives, this utility model proposes a gravure printing machine ink scraping device, comprising:

[0007] frame;

[0008] A gravure printing roller, which is pivotally mounted on the frame and connected to a rotary motor;

[0009] The ink pool is provided, and the lower part of the gravure roller is immersed in the ink pool and can be driven by a rotary motor to penetrate the ink into the wall of the gravure roller, and rotate clockwise.

[0010] The frame is provided with a base, and a vertical seat is slidably mounted on the upper wall of the base. The base is provided with a vertical drive device for driving the vertical seat to move vertically.

[0011] The telescopic cylinder is provided in at least two parts. The lower part of the telescopic cylinder is pivotally mounted on a vertical seat. The drive end of the telescopic cylinder is pivotally connected to a tilt adjustment seat. The lower end of the tilt adjustment seat is pivotally mounted on the frame.

[0012] A horizontal adjustment frame is mounted on an inclined adjustment seat. The horizontal adjustment frame is used to move the doctor blade between a position close to the gravure roller and a position far away from the gravure roller.

[0013] The doctor blade is located at the upper part of the position behind the gravure roller.

[0014] Unlike existing designs that only adjust the angle, this application uses a vertical seat, a telescopic cylinder, and a horizontal adjustment frame to adjust the vertical, tilt, and horizontal positions of the doctor blade, thereby achieving the relative distance between the gravure roller and the doctor blade.

[0015] The tilt angle can be adjusted to suit inks of different viscosities, thereby adjusting the relative position between the doctor blade and the gravure roller.

[0016] The height adjustment allows the doctor blade to be positioned at different heights on the gravure roller, thus satisfying the ink penetration time.

[0017] The horizontal adjustment frame can precisely adjust the relative distance between the doctor blade and the gravure roller, thereby meeting the ink layer requirements;

[0018] Furthermore, the adoption of a double telescopic cylinder structure can ensure the balance and stability of the scraper, reduce resonance issues, and provide greater safety. It also improves the adjustment accuracy of the tilt angle and ensures the consistency of the gravure ink for cigarette labels. Attached Figure Description

[0019] Figure 1 This is a side view of the present invention;

[0020] Figure 2 This is a rear view of the present invention;

[0021] Figure 3 This is a schematic diagram of a vertical drive device.

[0022] In the picture,

[0023] 1 is the rack,

[0024] 2 is the gravure printing roller, and 20 is the ink tank.

[0025] 3 is the base, 30 is the vertical seat, 31 is the vertical guide rod, 32 is the vertical guide sleeve, and 33 is the rotating roller.

[0026] 4 represents the telescopic cylinder, and 40 represents the tilt adjustment seat.

[0027] 5 represents the rotating shaft, and 50 represents the damping adjustment device.

[0028] 6 is the horizontal adjustment bracket, 61 is the horizontal guide rail, 62 is the horizontal slider, and 63 is the horizontal screw.

[0029] 7 represents the scraper, 70 represents the blade holder, and 71 represents the groove.

[0030] 8 represents the positioning screw. Detailed Implementation

[0031] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0032] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] like Figures 1 to 3 As shown, a gravure printing machine ink scraping device includes:

[0035] Rack 1;

[0036] Gravure roller 2, which is pivotally mounted on frame 1 and connected to a rotary motor (not shown);

[0037] The lower part of the gravure roller 2 is immersed in the ink pool and can be driven by a rotary motor to penetrate the ink into the wall surface of the gravure roller 2, and rotate clockwise.

[0038] The frame 1 is provided with a base 3, and a vertical seat 30 is slidably mounted on the upper wall of the base 3. The base 3 is provided with a vertical drive device for driving the vertical seat 30 to move vertically.

[0039] Telescopic cylinder 4, at least two telescopic cylinders 4 are provided, the lower part of the telescopic cylinder 4 is pivotally mounted on the vertical seat 30, the drive end of the telescopic cylinder 4 is pivotally connected to the tilt adjustment seat 40, and the lower end of the tilt adjustment seat 40 is pivotally mounted on the frame 1.

[0040] A horizontal adjustment frame 6 is mounted on an inclined adjustment seat 40. The horizontal adjustment frame 6 is used to drive the doctor blade 7 to move between a position close to the gravure roller 2 and a position far away from the gravure roller 2.

[0041] The doctor blade 7 is located at the upper part of the position behind the gravure roller 2.

[0042] Unlike existing designs that only adjust the angle, this application uses a vertical seat 30, a telescopic cylinder 4, and a horizontal adjustment frame 6 to adjust the vertical, tilt, and horizontal positions of the doctor blade 7, thereby achieving the relative distance between the gravure roller 2 and the doctor blade 7.

[0043] The tilt angle can be adjusted to accommodate inks of different viscosities, thereby adjusting the relative position between the doctor blade and the gravure roller 2.

[0044] The height adjustment allows the doctor blade 7 to be positioned at different heights on the gravure roller 2 to achieve the desired ink penetration time.

[0045] The horizontal adjustment frame 6 can precisely adjust the relative distance between the doctor blade 7 and the gravure roller 2, thereby meeting the ink layer requirements;

[0046] Furthermore, the adoption of a double telescopic cylinder 4 structure can ensure the balance and stability of the scraper 7, reduce resonance problems, and provide greater safety. It also improves the adjustment accuracy of the tilt angle and ensures the consistency of the gravure ink for cigarette labels.

[0047] Specifically, the base 3 is provided with a vertical guide sleeve 32, and the vertical seat 30 is provided with a vertical guide rod 31 that cooperates with the vertical guide sleeve 32. There are at least two vertical guide sleeves 32.

[0048] The vertical drive device is a rotating roller 33 and a cam that cooperates with the rotating roller (or a ratchet can be used to adjust the height of the vertical seat 30).

[0049] Of course, existing manual screws can also be used to adjust the height, and further adjustments can be made using a rotary motor and lead screw.

[0050] In this embodiment of the invention, the drive end of the telescopic cylinder 4 is horizontally positioned via a reducer.

[0051] The telescopic cylinder 4 is set vertically, and the drive end is set horizontally, thereby reducing the volume occupied by the telescopic cylinder 4 and making the overall mechanism more compact.

[0052] Specifically, a rotating shaft 5 is provided between the tilt adjustment seat 40 and the frame 1, and the rotating shaft 5 is equipped with a damping adjustment device. The damping adjustment device is a damping pad provided on the rotating shaft 5, which reduces the vibration generated by the scraper 7 during operation, improves the consistency of the scraper 7, and also plays a protective role, that is, it has an elastic deformation range.

[0053] In this embodiment of the utility model, the horizontal adjustment frame 6 includes a horizontal guide rail 61, a horizontal slider 62 disposed on the horizontal guide rail 61, and a scraper 7 detachably mounted on the horizontal slider 62.

[0054] The tilt adjustment seat 40 is provided with a horizontal screw 63 for adjusting the movement of the horizontal slider 62. There are at least two horizontal screws 63, which means that the existing screw structure is used to realize the adjustment of the scraper 7.

[0055] Specifically, the horizontal slider 62 is provided with a positioning seat, the positioning seat is provided with a horizontally arranged groove, the scraper 7 includes a blade holder 70, the blade holder 70 is disposed in the groove 71, and the blade holder is installed and fixed by a positioning screw 8, thereby realizing the replaceable setting of the scraper 7.

[0056] In this embodiment of the invention, the end of the scraper 7 is wedge-shaped, and the predetermined inclination angle is used to meet different ink scraping requirements.

[0057] In this embodiment of the invention, the scraper 7 is made of hard metal or flexible material, and different materials are used depending on different printing requirements.

[0058] Specifically, the scraper 7 is set at an angle.

[0059] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A doctor blade device for a gravure printing machine, characterized in that, include: frame; A gravure printing roller, which is pivotally mounted on the frame and connected to a rotary motor; The ink pool is provided, and the lower part of the gravure roller is immersed in the ink pool and can be driven by a rotary motor to penetrate the ink into the wall of the gravure roller, and rotate clockwise. The frame is provided with a base, and a vertical seat is slidably mounted on the upper wall of the base. The base is provided with a vertical drive device for driving the vertical seat to move vertically. The telescopic cylinder is provided in at least two parts. The lower part of the telescopic cylinder is pivotally mounted on a vertical seat. The drive end of the telescopic cylinder is pivotally connected to a tilt adjustment seat. The lower end of the tilt adjustment seat is pivotally mounted on the frame. A horizontal adjustment frame is mounted on an inclined adjustment seat. The horizontal adjustment frame is used to move the doctor blade between a position close to the gravure roller and a position far away from the gravure roller. The doctor blade is located at the upper part of the position behind the gravure roller.

2. The gravure printing machine ink scraping device as described in claim 1, characterized in that: The base is provided with a vertical guide sleeve, and the vertical seat is provided with a vertical guide rod that cooperates with the vertical guide sleeve. There are at least two vertical guide sleeves. The vertical drive device is a rotating roller and a cam that cooperates with the rotating roller.

3. The gravure printing machine ink scraping device as described in claim 2, characterized in that: The drive end of the telescopic cylinder is horizontally set via a reducer. The telescopic cylinder is set vertically, and the drive end is set horizontally.

4. The gravure printing machine ink scraping device as described in claim 1, characterized in that: A rotating shaft is provided between the tilt adjustment seat and the frame, and the rotating shaft is equipped with a damping adjustment device.

5. The gravure printing machine ink scraping device as described in claim 3, characterized in that: The horizontal adjustment frame includes a horizontal guide rail, a horizontal slider mounted on the horizontal guide rail, and a scraper detachably mounted on the horizontal slider. The tilt adjustment seat is provided with a horizontal screw for adjusting the movement of the horizontal slider, and there are at least two horizontal screws.

6. The gravure printing machine ink scraping device as described in claim 5, characterized in that: The horizontal slider is provided with a positioning seat, the positioning seat is provided with a horizontally arranged groove, the scraper includes a blade holder, the blade holder is disposed in the groove, and the blade holder is installed and fixed by a positioning screw.

7. The gravure printing press ink scraping device as described in claim 1, characterized in that: The end of the scraper is wedge-shaped.

8. The gravure printing machine ink scraping device as described in claim 1, characterized in that: The scraper is made of hard metal or flexible material.

9. The gravure printing machine ink scraping device as described in claim 1, characterized in that: The scraper is set at an angle.

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