Water and ink path separating device of offset press

Abstract

The utility model discloses an offset press ink-ink path disengagement device which comprises a box body and a box cover sleeved on the outer side of the box body, a driving roller and a driven roller are movably arranged in the box body through installing holes, a driving shaft is arranged on the end portion of the driving roller, a driving chain is arranged on the driving shaft, and the driving chain is connected with the box body. A mounting frame is arranged at the position, located on the outer side of the driving shaft, of the side wall of the box body, a disengaging mechanism is arranged in the mounting frame, a transmission mechanism connected with the disengaging mechanism is further arranged between the box body and the box cover and used for driving the driven roller, and a controller is arranged on the outer side of the mounting frame. The device is simple in structure and reasonable in design, achieves the effects that the driven wheel is pre-accelerated firstly when a disconnected ink path is reconnected, and the driving wheel and the driven wheel are further meshed after the speeds of the driving wheel and the driven wheel are matched, avoids gouges of teeth and damage to equipment, and effectively guarantees stability in the disconnection and connection processes of the ink path and the ink path of the offset press.

Description

Technical Field

[0001] The utility model relates to the technical field of offset printing machine equipment, in particular to an ink path disengaging device for an offset printing machine. Background Art

[0002] With the continuous development of printing technology, the performance stability and printing efficiency of offset printing presses, as important equipment in the printing industry, directly affect the quality of printed products and the economic benefits of enterprises. During the operation of offset printing presses, the ink path system is one of the key factors to achieve high-quality color printing. However, in practical applications, offset printing presses often need to control the operation of different color groups according to the color requirements of printing, which requires the ink path system to be able to disconnect and connect quickly and accurately. Therefore, designing an efficient and stable ink path disconnection device is of great significance to improving the performance and printing efficiency of offset printing presses.

[0003] Deficiencies of existing technology:

[0004] At present, most of the ink circuits of offset printing machines on the market use gear clutch control, and the connection and disconnection of the ink circuit are achieved by the meshing and separation of the driving wheel and the driven wheel. Among them, the driving wheel is driven by the ink circuit power sprocket to keep rotating, and the driven wheel is controlled by the cylinder to control its clutch with the driving wheel. When a color group needs to perform a printing operation, the cylinder pushes the driven wheel to mesh with the driving wheel, thereby driving the ink circuit to start working. However, this disengagement device has some problems in practical applications. Since the driving wheel is running at a high speed, even if the feed speed of the driven wheel is slowed down by the cylinder control, it is difficult to avoid the impact and collision generated when the gears are connected. This not only easily causes tooth damage, affecting the life and stability of the gears, but also the vibration may cause damage to the ink circuit system, thereby affecting the overall service life of the offset printing machine. Utility Model Content

[0005] The utility model aims to provide an ink path disengaging device for an offset printing machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ink path disengagement device for an offset printing machine, comprising a box body and a box cover sleeved on the outside of the box body, a driving roller and a driven roller are movably arranged in the box body through a mounting hole, a driving shaft is arranged at the end of the driving roller, a driving chain is arranged on the driving shaft, a mounting frame is arranged on the side wall of the box body and located outside the driving shaft, a disengagement mechanism is arranged in the mounting frame, a transmission mechanism connected to the disengagement mechanism is also arranged between the box body and the box cover for driving the driven roller, and a controller is arranged on the outside of the mounting frame;

[0007] The disengagement mechanism comprises:

[0008] A driving wheel, the driving wheel is arranged at one end of the driving shaft;

[0009] A mounting shaft, the mounting shaft being arranged on the inner side of the mounting frame, one end of the mounting shaft being slidably connected to a driven wheel, and edges of adjacent sides of the driving wheel and the driven wheel being provided with face gear rings matching each other;

[0010] A slide groove, the slide groove is provided on a side adjacent to the driven wheel and the driving wheel, a sliding sleeve is slidably connected in the slide groove, and a friction plate matching each other is provided in the top of the sliding sleeve and the groove on one side of the driving wheel;

[0011] A compression spring, the compression spring being arranged in the slide groove and used for pushing the slide sleeve out;

[0012] The electromagnet ring is arranged on the inner side of the mounting frame, and a permanent magnet matching the electromagnet ring is arranged inside the driven wheel.

[0013] Preferably, the transmission mechanism comprises:

[0014] A transverse axis, the transverse axis is arranged at the end of the driven roller, and the other end of the transverse axis is rotatably connected to the inner wall of the box cover;

[0015] The transmission gear is arranged on the horizontal axis, and the outer wall of the driven wheel is provided with wide teeth meshing with the transmission gear, and the wide teeth are slidably connected with the teeth of the transmission gear.

[0016] Preferably, the controller is electrically connected to the electromagnet ring via a wire, and the controller is used to control the direction and magnitude of the current flowing through the electromagnet ring.

[0017] Preferably, the contour shape of the sliding groove and the sliding sleeve is hexagonal.

[0018] Preferably, limit strips are provided at the notch of the slide groove and the end of the slide sleeve.

[0019] Preferably, the friction plate is made of ceramic material.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The ink path disengagement device of an offset printing press is provided with a disengagement mechanism, which includes a driving wheel, a mounting shaft, a driven wheel, a face gear ring, a slide groove, a sliding sleeve, a friction plate, a compression spring, an electromagnet ring and a permanent magnet, so that the driven wheel is pre-accelerated before the disengaged ink path is reconnected, and the driving wheel and the driven wheel are further engaged after the speeds are matched. The engagement in the speed synchronization state can effectively avoid the impact caused by the speed difference during the engagement, avoid the knocking of the teeth and the damage to the equipment, effectively ensure the stability of the ink path disengagement and connection process of the offset printing press, and improve the overall service life of the offset printing press;

[0022] The ink path disengagement device of an offset printing machine is provided with a transmission mechanism, which includes a horizontal shaft, a transmission gear and wide teeth, so that the transmission gear and the driven wheel are always in a meshing state. When the ink path is connected, the transmission gear can be pre-accelerated synchronously with the driven wheel, further improving the stability when the ink path is disengaged and connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall front view of the utility model;

[0024] Figure 2 This is a schematic diagram of the main internal structure of the utility model;

[0025] Figure 3 This is a right side installation diagram of the utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the driven wheel of the utility model from a side view;

[0027] Figure 5 For the utility model Figure 2 A magnified schematic diagram at point A in FIG.

[0028] In the figure: 1. box body; 2. box cover; 3. active roller; 4. driven roller; 5. driving shaft; 6. driving chain; 7. mounting frame; 8. disengaging mechanism; 801. driving wheel; 802. mounting shaft; 803. driven wheel; 804. face gear ring; 805. slide groove; 806. sliding sleeve; 807. friction plate; 808. compression spring; 809. electromagnet ring; 810. permanent magnet; 9. transmission mechanism; 901. horizontal axis; 902. transmission gear; 903. wide teeth; 10. controller; 11. limit strip. DETAILED DESCRIPTION

[0029] 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.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0033] See also Figure 1-5As shown, the utility model provides a technical solution of an offset printing press ink path disengagement device: an offset printing press ink path disengagement device, comprising a box body 1 and a box cover 2 sleeved on the outside of the box body 1, a driving roller 3 and a driven roller 4 are movably installed in the box body 1 by opening a mounting hole, a driving shaft 5 is installed at the end of the driving roller 3, a driving chain 6 is installed on the driving shaft 5, a mounting frame 7 is fixedly installed on the side wall of the box body 1 on the outside of the driving shaft 5 by bolts, a disengagement mechanism 8 is installed in the mounting frame 7, a transmission mechanism 9 connected to the disengagement mechanism 8 is also installed between the box body 1 and the box cover 2 for driving the driven roller 4, and a controller 10 is installed on the outside of the mounting frame 7 by bolts. The disengagement mechanism 8 includes a driving wheel 801, a mounting shaft 802, a slide groove 805, a compression spring 808 and an electromagnet ring 809. The driving wheel 801 is fixedly connected to one end of the driving shaft 5. The mounting shaft 802 is fixedly mounted on the inner side of the mounting frame 7, and one end of the mounting shaft 802 is movably connected to the driven wheel 803. The edges of the adjacent sides of the driving wheel 801 and the driven wheel 803 are equipped with mutually matching face gear rings 804, and the driving wheel 801 drives the driven wheel 803 to rotate through the meshing of the face gear rings 804. The slide groove 805 is provided on the side of the driven wheel 803 adjacent to the driving wheel 801, and the slide sleeve 806 is slidably connected in the slide groove 805. The top of the slide sleeve 806 and the groove on one side of the driving wheel 801 are both equipped with mutually matching friction plates 807. The compression spring 808 is installed in the slide groove 805 to push the slide sleeve 806 out. The electromagnet ring 809 is fixedly mounted on the inner side of the mounting frame 7, and the interior of the driven wheel 803 is equipped with a permanent magnet 810 matching the electromagnet ring 809.

[0034] When the offset printing machine is working normally, the ink path power sprocket group in each color group drives the drive shaft 5, the active roller 3 and the active wheel 801 to rotate through the drive chain 6. When a color group is not performing the color printing operation, the ink path should be in a disengaged state, such as Figure 2As shown, at this time, the electromagnet ring 809 is energized to generate attraction to the permanent magnet 810, so that the driven wheel 803 is attached to the mounting frame 7, and the friction plates 807 on both sides are separated, and the driven wheel 803 does not rotate synchronously with the driving wheel 801, and the driven roller 4 has no power input. When a color group needs to perform the color printing operation, the ink path needs to be reconnected. The controller 10 receives the control signal and first controls the electromagnet ring 809 to change the current direction to generate repulsive force on the permanent magnet 810. The current is divided into two gears. First, a smaller current is passed, and the action of the compression spring 808 is cooperated to make only the friction plates 807 on both sides fit each other, and the face gear rings 804 on the driving wheel 801 and the driven wheel 803 remain separated. At this time, under the contact of the friction plate 807, the driven wheel 803 begins to accelerate following the rotation of the driving wheel 801 until the speed reaches uniformity. Then the controller 10 controls the current on the electromagnet ring 809 to rise to the second gear. At this time, the current increases, and the repulsive force also increases. The driven wheel 803 overcomes the elastic force of the compression spring 808 and moves further toward the driving wheel 801 until the face gear ring 804 is fully meshed, the ink path is reconnected, and the driven roller 4 regains power input through the transmission mechanism 9. When the ink path needs to be separated again, the current direction on the electromagnet ring 809 can be changed by the controller 10. Through the disengagement mechanism 8, the effect of pre-accelerating the driven wheel 803 before reconnecting the disengaged ink path is achieved, and further meshing is achieved after the speed of the driving wheel 801 and the driven wheel 803 matches. The meshing in the speed synchronization state can effectively avoid the impact caused by the speed difference during meshing, avoid the knocking of the teeth and damage to the equipment, effectively ensure the stability of the offset printing press during the disengagement and connection process of the ink path, and improve the overall service life of the offset printing press.

[0035] The transmission mechanism 9 includes a transverse shaft 901 and a transmission gear 902. The transverse shaft 901 is mounted on the end of the driven roller 4, and the other end of the transverse shaft 901 is rotatably connected to the inner wall of the box cover 2. Figure 3 As shown, the transmission gear 902 is fixedly mounted on the horizontal shaft 901, and wide teeth 903 meshing with the transmission gear 902 are mounted on the outer wall of the driven wheel 803, and the wide teeth 903 are slidably connected with the teeth of the transmission gear 902. Regardless of whether the face tooth rings 804 of the driving wheel 801 and the driven wheel 803 are in meshing state, the driven wheel 803 always keeps meshing with the transmission gear 902 through the wide teeth 903. Through the transmission mechanism 9, the transmission gear 902 and the driven wheel 803 are always in meshing state, and when the ink path is connected, the transmission gear 902 can be pre-accelerated synchronously with the driven wheel 803, further improving the stability when the ink path is disconnected and connected.

[0036] The controller 10 is electrically connected to the electromagnet ring 809 through a wire. The controller 10 is used to control the direction and magnitude of the current flowing through the electromagnet ring 809. The controller 10 is a programmable controller. The controller 10 controls the separation, synchronous acceleration and docking status of the driven wheel 803 and the driving wheel 801 by controlling the magnitude and direction of the current on the electromagnet ring 809.

[0037] The outlines of the slide groove 805 and the sleeve 806 are hexagonal, which can ensure that the sleeve 806 slides in the slide groove 805. When the friction plate 807 rotates faster, the sleeve 806 can also drive the driven wheel 803 to rotate faster through the connection with the slide groove 805.

[0038] Limiting strips 11 are installed at the notch of the slide groove 805 and the end of the sliding sleeve 806. The limiting strips 11 can prevent the friction plate 807 and the sliding sleeve 806 from falling when the ink path is disengaged.

[0039] The friction plate 807 is made of ceramic material, which has high hardness, good high temperature resistance, and long service life and stability.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An ink path disconnecting device for an offset printing press, comprising a housing (1) and a housing cover (2) sleeved on the outside of the housing (1), wherein a driving roller (3) and a driven roller (4) are movably arranged in the housing (1) via mounting holes, and characterized in that: A drive shaft (5) is provided at the end of the active roller (3), a drive chain (6) is provided on the drive shaft (5), a mounting frame (7) is provided on the side wall of the box body (1) and located outside the drive shaft (5), a disengagement mechanism (8) is provided inside the mounting frame (7), a transmission mechanism (9) connected to the disengagement mechanism (8) is further provided between the box body (1) and the box cover (2) for driving the driven roller (4), and a controller (10) is provided outside the mounting frame (7); The disengagement mechanism (8) comprises: A driving wheel (801), wherein the driving wheel (801) is arranged at one end of the driving shaft (5); An installation shaft (802), the installation shaft (802) being arranged on the inner side of the installation frame (7), one end of the installation shaft (802) being slidably connected to a driven wheel (803), and edges of adjacent surfaces of the driving wheel (801) and the driven wheel (803) being provided with mutually matching face tooth rings (804); A slide groove (805), the slide groove (805) being provided on a side of the driven wheel (803) adjacent to the driving wheel (801), a sliding sleeve (806) being slidably connected in the slide groove (805), and a friction plate (807) matching each other being provided at the top of the sliding sleeve (806) and in the groove on one side of the driving wheel (801); A compression spring (808), wherein the compression spring (808) is arranged in the slide groove (805) and is used to push the slide sleeve (806) out; An electromagnet ring (809) is arranged on the inner side of the mounting frame (7), and a permanent magnet (810) matching the electromagnet ring (809) is arranged inside the driven wheel (803).

2. The ink path release device for an offset printing press according to claim 1, characterized in that: The transmission mechanism (9) comprises: A transverse axis (901), the transverse axis (901) being arranged at the end of the driven roller (4), and the other end of the transverse axis (901) being rotatably connected to the inner wall of the box cover (2); A transmission gear (902) is arranged on the horizontal shaft (901), and wide teeth (903) meshing with the transmission gear (902) are arranged on the outer wall of the driven wheel (803), and the wide teeth (903) are slidably connected with the teeth of the transmission gear (902).

3. The ink path release device for an offset printing press according to claim 1, characterized in that: The controller (10) is electrically connected to the electromagnet ring (809) via a wire, and the controller (10) is used to control the direction and magnitude of the current flowing through the electromagnet ring (809).

4. The ink path release device for an offset printing press according to claim 1, characterized in that: The outline shapes of the sliding groove (805) and the sliding sleeve (806) are hexagonal.

5. The ink path release device for an offset printing press according to claim 1, characterized in that: Limiting strips (11) are provided at the notch of the sliding groove (805) and at the end of the sliding sleeve (806).

6. The ink path release device for an offset printing press according to claim 1, characterized in that: The friction plate (807) is made of ceramic material.

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