Ratchet wheel pushing device

Abstract

The utility model belongs to the technical field of printer printing ink transfer structures, and particularly relates to a ratchet wheel pushing device which comprises a rotating shaft, a crank, a connecting rod, a swing arm, a pawl, a ratchet wheel and an ink transfer roller. The rotating shaft is connected with the crank; one end of the connecting rod is connected with the crank, and the other end of the connecting rod is connected with the swinging arm; the swing arm is connected with the pawl, the pawl is connected with the ratchet wheel, the pawl can be driven by the swing arm to push the ratchet wheel to rotate, the ratchet wheel is connected with the ink transfer roller, and the ratchet wheel drives the ink transfer roller to rotate when rotating. According to the ratchet wheel pushing device, ink can be accurately and uniformly transferred by the ink transfer roller, so that the technical effect of saving ink is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing ink transfer structures of printers, in particular to a ratchet wheel pushing device. Background Art

[0002] Existing printing machines usually transfer ink through an ink transfer roller group, but the transmission method in the existing ink transfer roller group is often not conducive to the ink transfer roller to transfer ink evenly and accurately, which easily causes problems such as uneven printing and ink waste.

[0003] Therefore, in order to solve the problem of uneven and inaccurate ink transfer and ink waste in the transmission method of the existing ink transfer roller group, this patent proposes a ratchet driving device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a ratchet pushing device, which can achieve the technical effect of accurately and evenly transferring ink and saving ink.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ratchet pushing device, comprising a rotating shaft, a crank, a connecting rod, a swing arm, a pawl, a ratchet, and an ink transfer roller;

[0006] The rotating shaft is connected to the crank;

[0007] One end of the connecting rod is connected to the crank, and the other end is connected to the swing arm;

[0008] The swing arm is connected to the pawl, the pawl is connected to the ratchet, the pawl can push the ratchet to rotate under the drive of the swing arm, the ratchet is connected to the ink transfer roller, and the ratchet drives the ink transfer roller to rotate when rotating.

[0009] Preferably, the ratchet pushing device also includes a fixing plate, and the rotating shaft, the crank, the connecting rod, the swing arm, the pawl, the ratchet, and the ink transfer roller are all installed and fixed via the fixing plate.

[0010] Preferably, the ratchet pushing device further comprises a spring, and the spring is arranged between the pawl and the ratchet.

[0011] Preferably, the rotating shaft is connected to the electric device.

[0012] Compared with the prior art, the utility model provides a ratchet pushing device, which has the following beneficial effects:

[0013] By arranging a rotating shaft, a crank, a connecting rod, a swing arm, a pawl, a ratchet wheel and an ink transfer roller which are connected in sequence, it is possible to achieve precise control of the ink transfer roller during rotation and ink transfer through the characteristics of continuous reciprocating swing of the pawl, unidirectional intermittent motion of the ratchet wheel and the ability of the pawl to prevent reverse rotation of the ratchet wheel, thereby ensuring that the ink transfer roller can transfer ink accurately and evenly, thereby achieving the effect of saving ink; at the same time, transmission through the pawl and ratchet wheel also has the advantages of simple structure, high reliability and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a ratchet pushing device provided by the utility model;

[0015] In the figure:

[0016] Rotating shaft 1, crank 2, connecting rod 3, swing arm 4, pawl 5, ratchet 6, ink transfer roller 7, spring 8, fixing plate 9. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 As shown, the utility model provides a ratchet 6 pushing device, comprising a rotating shaft 1, a crank 2, a connecting rod 3, a swing arm 4, a pawl 5, a ratchet 6, and an ink transfer roller 7;

[0019] The rotating shaft 1 is connected with the crank 2;

[0020] One end of the connecting rod 3 is connected to the crank 2, and the other end is connected to the swing arm 4;

[0021] The swing arm 4 is connected to the pawl 5, the pawl 5 is connected to the ratchet 6, the pawl 5 can push the ratchet 6 to rotate under the drive of the swing arm 4, the ratchet 6 is connected to the ink transfer roller 7, and the ratchet 6 drives the ink transfer roller 7 to rotate when rotating.

[0022] Specifically, in this embodiment, the rotating shaft 1, crank 2, connecting rod 3, swing arm 4, pawl 5, ratchet 6, and ink transfer roller 7 are connected in sequence, so that the rotating shaft 1 drives the crank 2 to rotate after rotation, the crank 2 drives the connecting rod 3 to rotate, the connecting rod 3 drives the swing arm 4 to rotate, the swing arm 4 drives the pawl 5 to swing in the ratchet 6, the pawl 5 swings in the ratchet 6 and pushes the ratchet 6 to rotate, thereby driving the ink transfer roller 7 to rotate together, and the ink transfer roller 7 transfers ink to other rubber rollers through rotation to transfer ink.

[0023] This embodiment, through the characteristics of continuous reciprocating swing of the pawl 5, unidirectional intermittent motion of the ratchet 6, and the pawl 5 preventing the ratchet 6 from rotating in reverse, can achieve precise control of the ink transfer roller 7 when rotating to transfer ink, thereby ensuring that the ink transfer roller 7 can transfer ink accurately and evenly, thereby achieving the effect of saving ink; at the same time, transmission through the pawl 5 and the ratchet 6 also has the advantages of simple structure, high reliability and long service life.

[0024] In an optional embodiment, if Figure 1 As shown, the ratchet 6 pushing device also includes a fixing plate 9, and the rotating shaft 1, the crank 2, the connecting rod 3, the swing arm 4, the pawl 5, the ratchet 6, and the ink transfer roller 7 are all installed and fixed through the fixing plate 9.

[0025] Specifically, in this embodiment, a plurality of mounting holes are provided on the fixed plate 9, the rotating shaft 1 and the ink transfer roller 7 are arranged on one side of the fixed plate 9, and the crank 2, the connecting rod 3, the swing arm 4, the pawl 5 and the ratchet 6 are arranged on the other side of the fixed plate 9. The rotating shaft 1 is connected to the crank 2 through the mounting hole, and the ink transfer roller 7 is also connected to the ratchet 6 through the mounting hole.

[0026] In an optional embodiment, if Figure 1 As shown, the ratchet 6 pushing device also includes a spring 8, and the spring 8 is arranged between the pawl 5 and the ratchet 6.

[0027] Specifically, in this embodiment, a spring 8 is provided between the pawl 5 and the ratchet 6, and the spring 8 can maintain the contact between the pawl 5 and the ratchet 6, thereby ensuring the connection between the pawl 5 and the ratchet 6 and achieving a certain vibration reduction and buffering effect.

[0028] In an optional embodiment, the rotating shaft 1 is connected to an electric device.

[0029] Specifically, the rotating shaft 1 is externally connected to an electric device, so that the electric device supplies power and drives the rotating shaft 1, thereby driving the entire ink transfer process to perform electric operation.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ratchet pushing device, characterized in that: It includes a rotating shaft, a crank, a connecting rod, a swing arm, a pawl, a ratchet wheel, and an ink transfer roller; The rotating shaft is connected to the crank; One end of the connecting rod is connected to the crank, and the other end is connected to the swing arm; The swing arm is connected to the pawl, the pawl is connected to the ratchet, the pawl can push the ratchet to rotate under the drive of the swing arm, the ratchet is connected to the ink transfer roller, and the ratchet drives the ink transfer roller to rotate when rotating.

2. A ratchet pushing device according to claim 1, characterized in that: The ratchet pushing device also includes a fixing plate, and the rotating shaft, the crank, the connecting rod, the swing arm, the pawl, the ratchet, and the ink transfer roller are all installed and fixed through the fixing plate.

3. A ratchet pushing device according to claim 1, characterized in that: The ratchet pushing device also includes a spring, and the spring is arranged between the pawl and the ratchet.

4. A ratchet pushing device according to claim 1, characterized in that: The rotating shaft is connected with the electric device.

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