Printing ink stirring device for printing machine and printing machine

Abstract

The utility model provides a printing ink stirring device for a printing machine and the printing machine. The printing ink stirring device comprises a printing ink groove which comprises a shell and a printing ink cavity defined by the shell and used for containing printing ink; the stirring component comprises a stirring rod, an ink stirring piece arranged on the stirring rod, a transmission piece fixedly connected with the stirring rod and an elastic mounting device connected with the ink stirring piece, and the stirring rod is mounted on the shell of the ink fountain through the elastic mounting device and can move relative to the shell of the ink fountain; the stirring component is configured as follows: during ink stirring work, the transmission part is connected with the driving part so as to be driven by the driving part to rotate, and the rotating transmission part drives the stirring rod to rotate so as to drive the ink stirring part to rotate and stir ink; and the elastic force provided by the elastic mounting device to the stirring rod enables the transmission piece to tend to press the driving piece.

Description

Technical Field

[0001] The utility model relates to the technical field of printing devices, and particularly relates to an ink stirring device for a printing press and a printing press. Background Art

[0002] A printing press is a machine for printing characters and images. Modern printing presses generally consist of mechanisms such as plate loading, inking, printing, and paper feeding (including folding). Printing presses are classified into relief printing presses, lithographic printing presses, intaglio printing presses, and screen printing presses according to the form of the printing plate. Intaglio printing is a widely used printing technology, which is favored for its high printing quality and color saturation. During the intaglio printing process, the uniform stirring of the ink and the reduction of the generation of bubbles are crucial for ensuring the quality of the printed matter. Therefore, an ink stirring device is needed to stir the ink to prevent the precipitation of pigments and additives in the ink, which affects the printing quality and color consistency. Summary of the Invention

[0003] The purpose of the utility model is to provide a more stable and reliable ink stirring device.

[0004] The first aspect of the utility model discloses an ink stirring device for a printing press, comprising:

[0005] An ink tank, comprising a housing and an ink chamber surrounded by the housing for containing ink;

[0006] A stirring member, comprising a stirring rod, an ink stirring member provided on the stirring rod, a transmission member fixedly connected to the stirring rod, and an elastic mounting device connected to the ink stirring member. The stirring rod is mounted on the housing of the ink tank through the elastic mounting device and the stirring rod is movable relative to the housing of the ink tank. The stirring member is configured to: during the ink stirring operation, the transmission member is connected to a driving member to be driven to rotate by the driving member, the rotating transmission member drives the stirring rod to rotate to drive the ink stirring member to rotate and stir the ink, and the elastic force provided by the elastic mounting device to the stirring rod makes the transmission member tend to press against the driving member.

[0007] In some embodiments, the ink stirring member comprises spiral blades provided on the stirring rod.

[0008] In some embodiments, the ink stirring member comprises a plurality of spiral blades provided on the stirring rod, and the plurality of spiral blades are equally spaced along the axial direction of the stirring rod.

[0009] In some embodiments, the elastic mounting device comprises two bearings provided at both ends of the stirring rod and two springs respectively provided between the two bearings and the housing, and the elastic forces of the two springs on the two bearings make the transmission member tend to press against the driving member.

[0010] In some embodiments, two sliding grooves are further included and are respectively arranged at two ends of the housing, and the two bearings are respectively in sliding fit with the two sliding grooves.

[0011] In some embodiments, the transmission member is a follower rubber roller for connecting with a printing plate roller of a printing press.

[0012] A second aspect of the present utility model discloses a printing press, including any one of the ink stirring devices for a printing press.

[0013] In some embodiments, the printing press is a gravure printing press, the gravure printing press includes a printing plate roller, the transmission member includes a follower rubber roller in pressing fit with the printing plate roller, and during ink stirring operation, the follower rubber roller is driven to rotate by the printing plate roller.

[0014] In some embodiments, the transmission member is arranged at one end of the stirring rod, the ink stirring member includes a spiral blade arranged on the stirring rod, and the spiral blade is configured to: during ink stirring operation, the rotation of the spiral blade drives the ink to flow towards the direction close to the printing plate roller.

[0015] Based on the ink stirring device provided by the present utility model, by mounting the stirring rod on the housing of the ink tank through an elastic mounting device and making the stirring rod movable relative to the housing of the ink tank, during ink stirring operation, the elastic force provided by the elastic mounting device to the stirring rod makes the transmission member press against the driving member, so that the transmission connection between the transmission member and the driving member can be more convenient, and the transmission connection between the transmission member and the driving member is also more stable and reliable, thereby enabling stable and reliable ink stirring.

[0016] Other features and advantages of the present utility model will become clear through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and the schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 It is a schematic structural diagram of the ink stirring device according to an embodiment of the present utility model. Detailed Embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0021] In the description of the present invention, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above terms have no special meanings, and thus cannot be construed as limiting the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure of the device. For example, if the device in the drawing is inverted, the device described as "above or over other devices or structures" will then be positioned "below or under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations are made for the spatial relative descriptions used here.

[0024] The ink agitating device for a printing press in this embodiment includes an ink tank and an agitating member.

[0025] The ink tank includes a housing 11 and an ink chamber 12 surrounded by the housing 11 for containing ink. As Figure 1 shown in the illustrated embodiment, the ink tank is a semi-cylindrical ink tank, and the formed ink chamber is also semi-cylindrical.

[0026] The agitating member includes an agitating rod 21, an ink agitating member 22 provided on the agitating rod 21, a transmission member 23 fixedly connected to the agitating rod 21, and an elastic mounting device connected to the ink agitating member 22. The agitating rod 21 is mounted on the housing 11 of the ink tank through the elastic mounting device and the agitating rod 21 is movable relative to the housing 11 of the ink tank. The agitating member is configured such that during the ink agitating operation, the transmission member 23 is connected to a driving member and is driven to rotate by the driving member. The rotating transmission member 23 drives the agitating rod 21 to rotate to drive the ink agitating member to rotate and agitate the ink, and the elastic force provided by the elastic mounting device to the agitating rod 21 causes the transmission member 23 to tend to press against the driving member.

[0027] During the ink agitating operation, the driving member drives the transmission member 23, the transmission member 23 drives the agitating rod 21 to rotate, and the agitating rod 21 drives the ink agitating member to rotate and agitate the ink, preventing the pigment and additives from precipitating. In the illustrated embodiment, the transmission member is in the shape of a roller, then the driving member connected to the transmission member is also in the shape of a roller. The driving member and the transmission member, both being rollers, have parallel axes and their outer cylindrical surfaces are in mutual extrusion, and the driving member drives the transmission member to rotate through the frictional force on the outer cylindrical surface. In some embodiments not shown in the drawings, the driving member can also be in the shape of a gear, etc., and correspondingly the transmission member is a gear meshing with the driving member.

[0028] The ink stirring device of this embodiment installs the stirring rod 21 on the housing 11 of the ink tank through an elastic mounting device and makes the stirring rod 21 movable relative to the housing 11 of the ink tank. The elastic force provided by the elastic mounting device to the stirring rod 21 causes the stirring rod 21 to move relative to the housing, driving the transmission member 23 to press against the driving member. During installation, the gap between the transmission member and the driving member can be automatically compensated under the action of the elastic force of the elastic mounting device, making the transmission connection between the transmission member 23 and the driving member more flexible and convenient. During the ink stirring operation, the elastic force of the elastic mounting device also makes the transmission connection between the transmission member 23 and the driving member more stable and reliable, so that the ink can be stirred stably and reliably.

[0029] In some embodiments, the ink stirring member 22 includes spiral blades provided on the stirring rod 21. When rotating, the spiral blades can not only disturb the ink in the circumferential direction of the stirring rod 21, but also disturb the ink in the axial direction of the stirring rod 21, which can further improve the stirring effect on the ink and make the stirring of the ink more uniform.

[0030] In some embodiments, as shown in the figure, the ink stirring member 22 includes a plurality of spiral blades provided on the stirring rod 21, and the plurality of spiral blades are equally spaced along the axial direction of the stirring rod 21. This embodiment can stir the ink in a larger range and more evenly in the axial direction of the stirring rod, and can further improve the stirring effect on the ink.

[0031] In some embodiments, as shown in the figure, the elastic mounting device includes two bearings 24 provided at both ends of the stirring rod 21 and two springs 25 respectively provided between the two bearings 24 and the housing 11. The elastic forces of the two springs 25 on the two bearings 24 cause the transmission member 23 to tend to press against the driving member. In the embodiment shown in the figure, one end of the stirring rod 21 is installed in one bearing, and both ends are respectively installed in two bearings. A spring 25 is provided between one bearing and the housing. The two springs 25 are both compressed springs, and the elastic forces of the two springs tending to elongate tend to push the two corresponding bearings to move relative to the housing respectively, so as to tend to push the whole stirring rod 21 to move relative to the housing, so that the transmission member on the stirring rod 21 can press against the driving member. At the same time, the stirring rod is installed in the bearing and can rotate flexibly, ensuring the stability of the stirring effect.

[0032] In some embodiments, as shown in the figure, the ink stirring device further includes two chutes 13 provided at both ends of the housing 11, and the two bearings 24 are respectively in sliding fit with the two chutes 13. In the embodiment shown in the figure, the two chutes are linear chutes extending along a straight line, and the extending straight lines of the two chutes are parallel to each other. The bearings located in the chutes tend to move linearly along the linear chutes under the action of the springs. This embodiment provides chutes to guide the movement of the bearings, which can improve the stability and reliability of the movement of the stirring rod relative to the housing.

[0033] In some embodiments, the transmission member 23 is a follower rubber roller used to connect to the printing plate cylinder of a printing press. The printing plate cylinder is an important component in a printing press and is used to transfer ink or coating to a printing medium (such as paper, plastic, etc.). The follower rubber roller is driven by the printing plate cylinder and can stir the ink synchronously when the printing plate cylinder is performing a printing operation, achieving the synchronism of the operation and the stirring process, making the action process more matching and helping to improve the printing effect. At the same time, in this embodiment, by setting the follower rubber roller to be driven by the printing plate cylinder without external motor drive, since the ink is a flammable liquid and the motor is an electrical component with a safety risk of fire, this embodiment can reduce the risk, save energy and reduce consumption, be applicable to inks with different viscosities, and at the same time, the device has a simple structure and is easy to maintain and clean.

[0034] In some embodiments, a printing press is also disclosed, which includes any one of the above-described ink stirring devices for a printing press.

[0035] In some embodiments, the printing press is a gravure printing press. The gravure printing press includes a printing plate cylinder, and the transmission member 23 includes a follower rubber roller that is press-fitted with the printing plate cylinder. When the ink stirring operation is performed, the follower rubber roller is driven to rotate by the printing plate cylinder.

[0036] In some embodiments, as shown in the figure, the transmission member 23 is provided at one end of the stirring rod 21. The ink stirring member 22 includes a spiral blade provided on the stirring rod 21. The spiral blade is configured such that when the ink stirring operation is performed, the rotation of the spiral blade drives the ink to flow along the axis of the stirring rod in a direction closer to the printing plate cylinder. After the rotation direction of the stirring rod driven by the printing plate cylinder is determined, the flow of the ink along the axis of the stirring rod driven by the rotation of the spiral blade can be adjusted by changing the leaf surface orientation of the spiral blade along the axial direction of the stirring rod on the stirring rod. When the leaf surface of the spiral blade faces different ends of the two ends of the stirring rod, the flow direction of the ink along the axis of the stirring rod driven by the rotation of the spiral blade is different. That is, by changing the leaf surface orientation of the spiral blade along the axial direction of the stirring rod on the stirring rod, the rotation of the spiral blade can drive the ink to flow along the axis of the stirring rod in a direction closer to the printing plate cylinder. Or when the leaf surface orientation of the spiral blade is fixed, the flow of the ink along the axis of the stirring rod driven by the rotation of the spiral blade in a direction closer to the printing plate cylinder can also be achieved by changing the rotation direction of the stirring rod. In this embodiment, the ink can flow through the surface of the printing plate cylinder, taking away the bubbles on the surface of the printing plate cylinder, thereby preventing the appearance of ink skin and ink block segregation and precipitation phenomena.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present utility model or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.

Claims

1. An ink stirring device for a printing press, characterized in that: include: The ink tank comprises a shell and an ink cavity surrounded by the shell and used for containing ink; The stirring component includes a stirring rod, an ink stirring piece arranged on the stirring rod, a transmission piece fixedly connected to the stirring rod, and an elastic mounting device connected to the ink stirring piece. The stirring rod is mounted on the shell of the ink tank through the elastic mounting device and the stirring rod is movable relative to the shell of the ink tank. The stirring component is configured as follows: when the ink is stirring, the transmission piece is connected to the driving piece to be driven to rotate by the driving piece, the rotating transmission piece drives the stirring rod to rotate so as to drive the ink stirring piece to rotate and stir the ink, and the elastic force provided by the elastic mounting device to the stirring rod causes the transmission piece to tend to press the driving piece.

2. The ink stirring device for a printing press according to claim 1, characterized in that: The ink stirring member comprises a spiral blade arranged on the stirring rod.

3. The ink stirring device for a printing press as claimed in claim 2, characterized in that: The ink stirring member comprises a plurality of spiral blades arranged on the stirring rod, and the plurality of spiral blades are distributed at equal intervals along the axial direction of the stirring rod.

4. The ink stirring device for a printing press according to claim 1, characterized in that: The elastic mounting device comprises two bearings arranged at both ends of the stirring rod and two springs respectively arranged between the two bearings and the housing. The elastic force of the two springs on the two bearings causes the transmission member to tend to press the driving member.

5. The ink stirring device for a printing press as claimed in claim 4, characterized in that: It also includes two slide grooves arranged at both ends of the shell, and the two bearings are respectively slidably matched with the two slide grooves.

6. The ink stirring device for a printing press according to claim 1, characterized in that: The transmission member is a follower rubber roller used to be connected to the printing plate roller of the printing press.

7. A printing press, characterized in that: The invention comprises an ink stirring device for a printing press as described in any one of claims 1 to 6.

8. The printing press according to claim 7, characterized in that The printing press is a gravure printing press, which includes a printing plate roller. The transmission member includes a follower rubber roller tightly matched with the printing plate roller. When the ink is stirred, the follower rubber roller is driven to rotate by the printing plate roller.

9. The printing press according to claim 8, characterized in that: The transmission member is arranged at one end of the stirring rod, and the ink stirring member includes a spiral blade arranged on the stirring rod. The spiral blade is configured as follows: when the ink is stirring, the rotation of the spiral blade drives the ink to flow along the axial direction of the stirring rod toward the printing plate roller.

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