Printing roller spacing adjusting device for printing machine

Abstract

The utility model discloses a printing roller spacing adjusting device for a printing machine. According to the technical scheme, the printing roller spacing adjusting device for the printing machine is characterized by comprising symmetrically-arranged fixing supports, a printing roller is rotationally arranged between the fixing supports, an adjusting device used for adjusting the spacing position of the printing roller is arranged on the printing roller, and the adjusting device is in sliding connection with the printing roller; the adjusting device comprises a first adjusting piece ring arranged on the printing roller in a sliding mode, a second adjusting piece ring fixed to one side of the fixing support and a rack arranged between the fixing support and the second adjusting piece ring, an adjusting cavity is formed in the first adjusting piece ring, a gear is rotationally connected into the adjusting cavity through a rotating shaft, and the gear is meshed with the rack. The adjusting device is arranged to adjust the first adjusting sheet ring to be close to or far away from the second adjusting sheet ring so as to be matched with printing products of different sizes for printing, and printing of various sizes is met.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, and in particular to a printing roller spacing adjustment device for a printing press. Background Technology

[0002] Printing rollers are one of the accessories of offset printing machines. They have moderate hardness and elasticity, high oil resistance, resistance to washing solvents, abrasion resistance and shape stability.

[0003] In the existing technology, printing requires printing on carriers of different specifications. When carriers have different sizes, it is difficult to keep each size of carrier within the printing range. The printed content is prone to deviating from the carrier, resulting in defective carrier printing and low integrity rate of printed content. To address this, we propose a printing roller spacing adjustment device for printing presses. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a printing roller spacing adjustment device for printing presses. By setting an adjustment device, the first adjustment ring is adjusted to be relatively closer or relatively farther away from the second adjustment ring to accommodate printing products of different sizes, thereby satisfying the printing needs of various sizes.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a printing roller spacing adjustment device for a printing machine, comprising fixed supports arranged symmetrically, printing rollers rotatably disposed between the fixed supports, and an adjustment device for adjusting the position of the printing roller spacing disposed on the printing rollers. The adjustment device is slidably connected to the printing rollers. The adjustment device includes a first adjustment plate ring slidably disposed on the printing rollers, a second adjustment plate ring fixed to one side of the fixed supports, and a rack disposed between the fixed supports and the second adjustment plate rings. An adjustment cavity is opened on the first adjustment plate ring, and a gear is rotatably connected to the adjustment cavity through a rotating shaft. The gear meshes with the rack.

[0006] By adopting the above technical solution, the gear meshes with the rack and rotates relative to each other, thereby driving the second adjusting plate ring to reciprocate linearly along the length of the rack. When the gear rotates forward, the first adjusting plate ring moves away from the second adjusting plate ring. When the gear rotates in reverse, the first adjusting plate ring moves closer to the second adjusting plate ring. The first adjusting plate ring is fixed to the positioning plate by bolts, and the other end of the positioning plate slides with the positioning post. The positioning post is set parallel to the printing roller. The positioning post further limits the position of the first adjusting plate ring to improve the stability of movement. The adjusting post adjusts the first adjusting plate ring to move closer or farther away from the second adjusting plate ring to accommodate printing products of different sizes, thereby meeting various printing needs.

[0007] The present invention is further configured such that: an adjustment port is provided through one side of the adjustment cavity, and an adjustment column is connected to one end of the rotating shaft extending out of the adjustment port.

[0008] By adopting the above technical solution, the diameter of the adjusting column is larger than the diameter of the adjusting port, which can limit the position of the rotating shaft. When the adjusting rod drives the adjusting column to rotate, it simultaneously drives the rotating shaft to rotate in the adjusting cavity.

[0009] The present invention is further configured such that: the adjusting column is provided with a connection port, and an adjusting rod is movably disposed with the connection port.

[0010] By adopting the above technical solution, one end of the adjusting rod is installed in the connection port. By rotating the adjusting rod, the gear is driven to rotate in the adjusting cavity. The gear meshes with the rack and rotates relative to it, thereby driving the second adjusting plate ring to make linear reciprocating motion along the length direction of the rack. When the gear rotates forward, the first adjusting plate ring moves away from the second adjusting plate ring. When the gear rotates in reverse, the first adjusting plate ring moves towards the second adjusting plate ring.

[0011] The present invention is further configured such that: a positioning post is provided between the two fixed brackets, a limiting piece is slidably connected on the positioning post, and the end of the limiting piece away from the fixed position is connected to the first adjusting plate ring by bolts.

[0012] By adopting the above technical solution, the positioning column is set to adjust the first adjustment.

[0013] The present invention is further provided with a scale plate between the fixed brackets.

[0014] By adopting the above technical solution, the scale plate is set so that when the operator adjusts the position of the adjustment device, he can observe the distance between the adjustment device and the second adjustment ring, so as to accurately adjust the distance between the first adjustment ring and the second adjustment ring in accordance with the width of the printed matter.

[0015] The present invention is further configured such that the printing roller is driven by a motor.

[0016] In summary, this utility model has the following beneficial effects:

[0017] By setting an adjustment device to adjust the first adjustment ring to be relatively closer or farther away from the second adjustment ring, printing can be carried out to accommodate printed materials of different sizes, so as to meet the printing needs of various sizes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2This is a top view of the present invention;

[0020] Figure 3 for Figure 2 AA sectional view.

[0021] In the diagram: 1. Fixed bracket; 2. Motor; 3. First adjusting plate ring; 4. Limiting plate; 5. Bolt; 6. Positioning post; 7. Scale plate; 8. Adjusting rod; 9. Adjusting post; 10. Adjusting cavity; 11. Rack; 12. Second adjusting plate ring; 13. Gear; 14. Rotating shaft; 15. Printing roller. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0023] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", 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 limitations on this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings.

[0026] A printing roller spacing adjustment device for a printing press, such as Figure 1-3As shown, the device includes symmetrically arranged fixed supports 1, with printing rollers 15 rotatably arranged between the fixed supports 1. The printing rollers 15 are provided with an adjustment device for adjusting the spacing of the printing rollers 15. The adjustment device is slidably connected to the printing rollers 15. The adjustment device includes a first adjustment ring 3 slidably arranged on the printing rollers 15, a second adjustment ring 12 fixed to one side of the fixed supports 1, and a rack 11 arranged between the fixed supports 1 and the second adjustment ring 12. An adjustment cavity 10 is opened on the first adjustment ring 3. A gear 13 is rotatably connected to the adjustment cavity 10 through a rotating shaft 14. The gear 13 meshes with the rack 11.

[0027] An adjustment port is provided on one side of the adjustment cavity 10. One end of the rotating shaft 14 extending out of the adjustment port is connected to an adjustment column 9. The adjustment column 9 has a connection port and also includes an adjustment rod 8 that is movably arranged with the connection port. A positioning column 6 is provided between the two fixed brackets 1. A limit piece 4 is slidably connected to the positioning column 6. The end of the limit piece 4 away from the fixed position is connected to the first adjustment plate ring 3 by a bolt 5. A scale plate 7 is provided between the fixed brackets 1. The printing roller 15 is driven by a motor 2.

[0028] Working principle: Gear 13 meshes with rack 11 and rotates relative to it, thereby driving the second adjusting plate ring 12 to reciprocate linearly along the length of rack 11. When gear 13 rotates forward, the first adjusting plate ring 3 moves away from the end of the second adjusting plate ring 12. When gear 13 rotates in reverse, the first adjusting plate ring 3 moves closer to the end of the second adjusting plate ring 12. The first adjusting plate ring 3 is fixed to the positioning plate by bolt 5. The other end of the positioning plate slides with the positioning post 6. The positioning post 6 is set parallel to the printing roller 15. The positioning post 6 further limits the position of the first adjusting plate ring 3 to improve the stability of movement. The adjusting post 9 is used to adjust the first adjusting plate ring 3 to be relatively closer or farther away from the second adjusting plate ring 12 to cooperate with printing products of different sizes for printing, thereby meeting a variety of printing needs.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A printing roller spacing adjustment device for a printing press, comprising fixed supports (1) arranged symmetrically, printing rollers (15) rotatably disposed between the fixed supports (1), and an adjustment device for adjusting the spacing position of the printing rollers (15) provided on the printing rollers (15), the adjustment device being slidably connected to the printing rollers (15), characterized in that: The adjustment device includes a first adjustment ring (3) slidably disposed on the printing roller (15), a second adjustment ring (12) fixed on one side of the fixed bracket (1), and a rack (11) disposed between the fixed bracket (1) and the second adjustment ring (12). An adjustment cavity (10) is provided on the first adjustment ring (3). A gear (13) is rotatably connected in the adjustment cavity (10) through a rotating shaft (14). The gear (13) meshes with the rack (11).

2. The printing roller spacing adjustment device for a printing press according to claim 1, characterized in that: The adjustment cavity (10) has an adjustment port extending outward on one side, and the end of the rotating shaft (14) extending out of the adjustment port is connected to an adjustment column (9).

3. The printing roller spacing adjustment device for a printing press according to claim 2, characterized in that: The adjusting column (9) is provided with a connection port, and also includes an adjusting rod (8) that is movably disposed with the connection port.

4. The printing roller spacing adjustment device for a printing press according to claim 1, characterized in that: A positioning post (6) is provided between the two fixed brackets (1), and a limiting piece (4) is slidably connected on the positioning post (6). The end of the limiting piece (4) away from the fixed position is connected to the first adjusting plate ring (3) by bolts (5).

5. The printing roller spacing adjustment device for a printing press according to claim 1, characterized in that: A scale plate (7) is provided between the fixed brackets (1).

6. The printing roller spacing adjustment device for a printing press according to claim 1, characterized in that: The printing roller (15) is driven by a motor (2).

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