Rapid doctor blade replacing device

Abstract

The utility model discloses a doctor blade quick replacing device which comprises a scraper plate and a pressing plate, one side of the pressing plate is connected with the scraper plate through a plurality of bolts, one side of the contact face of the scraper plate and the pressing plate is connected with a doctor blade, the other side of the contact face of the scraper plate and the pressing plate is provided with a long-strip-shaped groove body, a locking rod is arranged in the long-strip-shaped groove body, and the longitudinal section of the locking rod is semicircular. The locking rod is connected with one or more handles. The doctor blade clamping device is reasonable and ingenious in structural design, when the doctor blade is clamped between the pressing plate and the doctor blade plate, the handle is pressed downwards, so that the semicircle of the longitudinal section of the locking rod is erected, one side of the pressing plate is jacked up, the doctor blade on the other side of the pressing plate is pressed tightly, after the handle is lifted, the semicircle falls down, the pressing plate is loosened, and the doctor blade can be easily taken down and is convenient and fast to use. Replacement time is greatly shortened, and operation efficiency of the printing machine can be improved.

Description

Quick-change doctor blade device Technical Field

[0001] This utility model relates to a quick-change device for doctor blades. Background Technology

[0002] Doctor blades frequently need to be replaced during printing due to wear and tear or the need for cleaning to ensure smooth printing operations. Traditional doctor blades are typically secured with numerous bolts. Disassembly requires loosening each bolt, replacing the doctor blade, and then tightening each bolt again – a tedious and time-consuming process. Furthermore, printing must be stopped during doctor blade replacement, significantly reducing efficiency. Therefore, a device that allows for quick doctor blade replacement is needed. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, this utility model provides a quick-change device for doctor blades, which ensures a secure connection of the doctor blades while enabling rapid replacement, thereby improving work efficiency.

[0004] To achieve this objective, the structure adopted in this utility model is as follows: a quick-change device for the doctor blade, including a doctor blade plate and a pressure plate. One side of the pressure plate is connected to the doctor blade plate by multiple bolts. The doctor blade is connected to one side of the contact surface between the doctor blade plate and the pressure plate, and a long strip groove is provided on the other side. The doctor blade and the long strip groove are located on both sides of the bolts. A locking rod is provided in the long strip groove. The longitudinal section of the locking rod is an eccentric structure, and the locking rod is connected to one or more handles.

[0005] The locking rod has a semi-circular longitudinal section, and the handle is connected to the plane of the locking rod.

[0006] The scraper blade is a long strip-shaped plate, with one side being a long strip-shaped flat structure and the other side being a long strip-shaped structure with a triangular longitudinal section. The downward-facing side of the triangle is arc-shaped.

[0007] The upper surface of the scraper plate is provided with a long strip-shaped baffle, and the pressure plate is located on one side of the baffle.

[0008] The scraper blade and the baffle plate are provided with grooves at the corresponding handle positions.

[0009] The scraper blade is provided with one or more handles.

[0010] One or more buffer bolts are provided on the pressure plate. The buffer bolts are connected to the scraper plate, and springs are sleeved on the buffer bolts.

[0011] Its beneficial effects are: the structure of this utility model is reasonable and ingenious. When the doctor blade is clamped between the pressure plate and the doctor blade plate, pressing down the handle makes the semicircle of the longitudinal section of the locking rod stand up, lifting one side of the pressure plate and pressing the doctor blade on the other side of the pressure plate. When the handle is lifted, the semicircle lies down, the pressure plate is released, and the doctor blade can be easily removed. It is convenient and quick, greatly shortens the replacement time, and can improve the operating efficiency of the printing machine. Attached Figure Description

[0012] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0013] Figure 1 is a three-dimensional structural diagram of this utility model;

[0014] Figure 2 is a cross-sectional view of the present invention. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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 limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; a fixed connection can be welding or adhesive bonding. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] As shown in Figures 1 and 2, the quick-change doctor blade device includes a doctor blade plate 1 and a pressure plate 2. One side of the pressure plate 2 is connected to the doctor blade plate 1 by multiple bolts, clamping the doctor blade. The doctor blade is connected to one side of the contact surface between the doctor blade plate 1 and the pressure plate 2, and a long, narrow groove 13 is provided on the other side. The doctor blade and the long, narrow groove 13 are located on either side of the bolts. A locking rod 3 is installed inside the long, narrow groove 13. The locking rod 3 has an eccentric longitudinal section and is connected to one or more handles 31. Pulling the handles 31 causes the locking rod 3 to rotate eccentrically, adjusting the pressure of the pressure plate 2 on the doctor blade.

[0019] The locking rod 3 has a semi-circular longitudinal section, and the handle 31 is connected to the plane of the locking rod. Pressing down the handle makes the semi-circular section of the locking rod stand up, lifting one side of the pressure plate and pressing the doctor blade on the other side of the pressure plate. When the handle is lifted, the semi-circle lies down, the pressure plate is released, and the doctor blade can be easily removed. This is convenient and quick, greatly shortening the replacement time and improving the operating efficiency of the printing machine.

[0020] The scraper plate 1 is a long strip-shaped plate. One side is a long strip-shaped flat structure, and the other side is a long strip-shaped structure 12 with a triangular longitudinal section. The downward-facing side of the triangle is arc-shaped. The long strip-shaped structure 12 with a triangular longitudinal section thickens a part of the scraper plate 1, making the scraper plate 1 more stable and extending its service life.

[0021] The upper surface of the doctor blade 1 is provided with a long strip baffle 4. The pressure plate 2 is located on one side of the baffle 4. When the pressure plate 2 is fixed, one side abuts against the baffle 4 to prevent the pressure plate 2 from shifting and causing the doctor blade to loosen.

[0022] The scraper plate 2 and the baffle plate 4 are provided with grooves 11 corresponding to the handle 31. When the handle 31 is in a horizontal state, it is exactly in the groove 11, and the locking rod 3 will not move left or right.

[0023] The scraper plate 2 is provided with one or more handles 7 for easy handling.

[0024] One or more buffer bolts 5 are provided on the pressure plate 2. The buffer bolts 5 are connected to the doctor blade plate 1. A spring 6 is sleeved on the buffer bolt. When the locking rod 3 rotates and the pressure plate 2 is released, the spring 6 provides a certain pressure to prevent the pressure plate 2 from shaking. At the same time, the doctor blade can be temporarily clamped, so that it will not slip out because the doctor blade has no support force when the locking rod 3 is rotated to press the pressure plate 2.

[0025] The pressure plate 2 has gourd-shaped bolt holes at the bolt connection points. The smaller diameter end connects to the bolt, and a washer is placed inside. The larger diameter end faces the elongated groove 13. When the pressure plate 2 needs to be replaced, the buffer bolt 5 is removed, and the pressure plate 2 is moved so that the bolt is moved to the larger diameter end of the gourd-shaped bolt hole. The pressure plate 2 can then be removed as a whole.

[0026] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A quick-change device for doctor blades, comprising a doctor blade (1) and a pressure plate (2), characterized in that, One side of the pressure plate (2) is connected to the doctor blade (1) by multiple bolts. The doctor blade is connected to one side of the contact surface between the doctor blade (1) and the pressure plate (2), and a long strip groove (13) is provided on the other side. The doctor blade and the long strip groove (13) are located on both sides of the bolts. A locking rod (3) is provided in the long strip groove (13). The longitudinal section of the locking rod (3) is an eccentric structure. The locking rod (3) is connected to one or more handles (31).

2. The quick change device for doctor blade according to claim 1, characterized in that, The locking rod (3) has a semi-circular longitudinal section, and the handle (31) is connected to the plane of the locking rod (3).

3. The quick-change device for the doctor blade according to claim 1, characterized in that, The scraper plate (1) is a long strip plate with a long strip plate structure on one side and a long strip structure (12) with a triangular longitudinal section on the other side. The side of the triangle facing downwards is arc-shaped.

4. The quick-change device for the doctor blade according to claim 1, characterized in that, The upper surface of the scraper blade (1) is provided with a long strip baffle (4), and the pressure plate (2) is located on one side of the baffle (4).

5. The quick-change device for the doctor blade according to claim 1 or 4, characterized in that, The scraper plate (1) and the baffle plate (4) are provided with grooves (11) corresponding to the handles.

6. The quick-change device for the doctor blade according to claim 1, characterized in that, The scraper blade (1) is provided with one or more handles (7).

7. The quick change device for an ink doctor blade of claim 1, wherein, One or more buffer bolts (5) are provided on the pressure plate (2), the buffer bolts (5) are connected to the scraper plate (1), and a spring (6) is sleeved on the buffer bolts (5).

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