Quick detachable ink roller drive

Abstract

A doctor roller drive (16) for a printing press is described. The doctor roller drive (16) comprises a doctor roller (20) with a shaft core (22), a drive-side link (24a) which is fixed at one end to a wall plate (12) and at the other end to a drive-side doctor roller shaft head (22a) by means of a quick-locking unit (26) for locking and releasing the drive-side doctor roller shaft head (22a). The quick-locking unit (26) comprises a locking cover (38) which is fixed to the drive-side link (24a) such that the locking cover (38) locks the drive-side doctor roller shaft head (22a) in a closed position and releases the drive-side doctor roller shaft head (22a) in an open position. Furthermore, a printing press having such a doctor roller drive (16) is provided.

Description

Technical Field

[0001] This invention relates to an inking roller drive mechanism for a printing unit of a printing press, comprising an inking roller containing a shaft and a rotatable drive-side connecting rod, one end of which is fixed to a wall panel and the other end connected to the inking roller shaft head. The inking roller shaft head and the end of the drive-side connecting rod are connected by a quick-locking unit that can lock and release the inking roller.

[0002] This invention is directly applied to printing presses with an inking roller drive and a printing plate roller, the function of which is to apply ink to the surface of the printing plate roller. Background Technology

[0003] This combination of ink assembly and printing unit is the mainstream configuration. In this context, inking rollers are typically used to apply ink to printing rollers, enabling the printing rollers to print the desired image on the substrate.

[0004] Because printing rollers are replaced periodically depending on the printing pattern and product requirements, a quick-locking unit is designed. Replacing the printing roller is for cleaning or replacement with different printing rollers, including rollers of different sizes or with additional features to suit specific printing processes. Summary of the Invention

[0005] The invention aims to further improve the ink delivery roller drive device, enabling quick replacement of the ink delivery roller and easy operation.

[0006] The aforementioned type of inking roller drive solves this problem. The quick-locking unit includes a locking cover plate fixed to the transmission side connecting rod, thus allowing the inking roller shaft head to be in both open and closed positions. This quick-locking unit has a simple structure, resulting in a simple structure for the inking roller drive as well. Therefore, the manufacturing cost of the inking roller drive is effectively controlled. Furthermore, the opening and closing of the locking cover plate is simple and quick, and can be operated manually or automatically. Therefore, both the inking roller drive and the printing press equipped with it can operate in a more efficient manner. The advantages include the inking roller being detachable and replaceable with a relatively shorter replacement time, making it possible to simultaneously replace the ink tray and printing plate roller, greatly improving the efficiency of printing plate roller replacement and reducing the frequency and intensity of repetitive work for operators.

[0007] The ink delivery roller drive mechanism includes a drive-side connecting rod and a driven-side connecting rod, one end of which is fixed to the wall panel, and the other end is connected to the ink delivery roller shaft head via a quick-locking unit. The quick-locking unit can quickly lock and release the ink delivery roller shaft head. The quick-locking unit includes a locking cover plate fixed to the connecting rod, thus allowing the ink delivery roller shaft head to be in both open and closed positions. An advantage is that the quick-locking units for the drive-side and driven-side connecting rods use the same design. Furthermore, the rotation axis centered on the drive-side connecting rod and the rotation axis centered on the driven-side connecting rod are identical relative to the wall panel. Even better, the drive-side and driven-side connecting rods always move synchronously. In addition, the integrated ink delivery roller, fixed by the two shaft heads, provides high-precision movement.

[0008] Based on the example, the locking cover needs to be secured to the corresponding connecting rod with a pin. This is a simple and reliable method. Furthermore, this pin is economical in terms of manufacturing cost.

[0009] The pin can mate with a slotted groove to allow the locking cover to move relative to the connecting rod along the direction of the slot. Two options are available: the pin is fixed to the connecting rod and the slotted groove is located on the locking cover, or the pin is fixed to the locking cover and the slot is located on the connecting rod. The pin is preferably fixed in the slotted groove. This design helps ensure the locking cover is in the closed position, enabling the locking cover to switch from the closed position to the open position and vice versa. To achieve this function, a combined motion—a rotational motion and a translational motion—needs to be predefined. Therefore, if position switching is not required, the locking cover must be prevented from switching from the closed position to the open position or vice versa.

[0010] Furthermore, a locking plate is mounted on the locking cover plate and can be selectively engaged with a reverse locking device to restrict the rotation of the locking cover plate. Preferredly, the locking plate is engaged with the reverse locking device by translating the locking cover plate. This also applies to removing the locking plate from the reverse locking device. To open the locking cover plate, it must first be moved by translation, and then rotated. To close the locking cover plate, it must first be rotated, and then translated; otherwise, the reverse locking device may be ineffective. Alternatively, a locking plate with a certain degree of elasticity can be used, and this property can be utilized to engage the locking plate with the reverse locking device. In this case, the locking plate can also be referred to as a clamp. All of the above solutions can easily restrict the movement of the locking cover plate.

[0011] Option 2 involves a pin and a circular hole that engage, allowing the locking cover to rotate only relative to the corresponding connecting rod. This contrasts with the previous embodiment, where the locking cover cannot be translated. This design of the ink roller drive device simplifies the locking mechanism.

[0012] In this configuration, the locking cover can include a clamping device, and the corresponding linkage can include a reverse clamping device. The clamping and reverse clamping devices can be interlocked to prevent rotation of the locking cover. In other words, the locking cover can be secured in the closed state by the clamping and reverse clamping devices. The locking cover can only be opened when a sufficiently large force is applied. Therefore, creeping of the locking cover from the closed to the open state is prevented.

[0013] In the preferred solution, a handle can be added and placed on the locking cover, allowing the locking cover to be operated manually.

[0014] Option 2 involves mounting the locking actuator on both the driven and driven connecting rods. The locking actuator is connected to a corresponding locking cover, allowing it to selectively open and close the cover. This enables automatic operation of the locking cover. This applies to switching between closed and open states, and vice versa. Due to its automated nature, the action is fast and precise. The locking actuator is preferably electric, hydraulic, or pneumatic. Its orientation is parallel to the corresponding connecting rod. It is important to note that the locking actuator does not replace the function of the handle. In some cases, the handle can be used with the locking actuator, such as in the event of a power outage.

[0015] In both designs described above, the inking roller drive includes a first actuator, which is a fluid cylinder connected to one of the drive-side and driven-side connecting rods, allowing each connecting rod to rotate via the first actuator. The fluid cylinder can be a hydraulic cylinder or a pneumatic cylinder. The function of the first actuator is to lift the inking roller from its position where it engages with the ink tray to a position above the ink tray or where it engages with the printing plate roller.

[0016] The inking roller drive may also include a second actuator arranged in series with the first actuator, such that the corresponding connecting rod can be rotated via the second actuator. Therefore, the inking roller can move in two stages. For example, the first actuator can move the inking roller from its position engaging with the ink tray to an intermediate position. Then, the second actuator can move the inking roller from the intermediate position to its final position engaging with the printing plate roller. The two stages of movement can be controlled independently. Furthermore, providing two actuators arranged in series gives the inking roller a relatively large range of motion, allowing it to be used in combination with printing plate rollers of various diameters. The second fluid cylinder can be a pneumatic cylinder or a hydraulic cylinder.

[0017] In all designs, the drive-side linkage includes a transmission mechanism for driving the ink delivery roller when the ink delivery roller shaft is locked by the quick-locking unit. No additional connections are required besides the drive-side linkage, driven-side linkage, and ink delivery roller. Therefore, the ink delivery roller drive mechanism has a simple structure.

[0018] The transmission device includes a gear train that meshes with gears on the corresponding shaft ends of the ink delivery roller. Therefore, the reliability of driving the ink delivery roller is high.

[0019] The ink delivery roller drive works in conjunction with the ink disk, with the drive-side connecting rod and the driven-side connecting rod arranged on the two outer sides of the ink disk. Preferably, the drive-side connecting rod and the driven-side connecting rod are arranged near the respective outer sides of the ink disk. Therefore, the ink delivery roller drive has a compact structure.

[0020] In addition, bearing seats are designed on the two connecting rods next to the two opposite side walls of the ink disk to keep the ink delivery roller in a safe and stable position above the ink disk. For example, the bearing seats are designed in a V-shape when viewed in cross-section.

[0021] The above-described type of printing press, or a printing press equipped with the inking roller drive of the present invention, solves this problem, wherein the locking cover plate of the inking roller drive faces the printing plate roller. In such a gravure printing press, the inking roller can be replaced quickly and easily. Furthermore, when the inking roller presses against the printing plate roller to inscribe ink onto its surface, the resulting reverse force does not act on the locking cover plate, but is applied directly to the corresponding drive-side connecting rod and driven-side connecting rod. In other words, only a relatively low force is applied to the locking cover plate. Therefore, the locking cover plate structure is simple, safe, and reliable.

[0022] In addition, all the effects and benefits associated with the inking roller drive also apply to the printing press, and vice versa. Attached Figure Description

[0023] The invention will be illustrated with reference to examples in the attached drawings. All drawings:

[0024] - Figure 1 A printing press, including the inking roller drive device of the invention;

[0025] - Figure 2 show Figure 1 Details of the printing press;

[0026] - Figure 3 show Figure 1 and Figure 2 In the printing press ink delivery roller drive device, the locking cover is in the open position, meaning the ink delivery roller shaft head and the connecting rod are not in contact.

[0027] - Figure 4 show Figure 3 Details of the ink delivery roller drive mechanism;

[0028] - Figure 5 show Figure 3 and Figure 4 One driven end of the ink delivery roller drive device, wherein the locking cover is in the closed position;

[0029] - Figure 6 show Figures 3 to 5 The ink delivery roller drive device has a locking cover in the open position, at which time the ink delivery roller shaft head is still in contact with the connecting rod;

[0030] - Figure 7 show Figures 3 to 6 The ink delivery roller drive device, wherein the locking cover is in the closed position and the ink delivery roller shaft is in contact with the connecting rod;

[0031] - Figure 8 Showing Figures 3 to 7 The ink delivery roller drive device, wherein the locking cover is in the closed position, the ink delivery roller shaft is in contact with the connecting rod, and the ink delivery roller is lifted above the ink disk by the first and second actuators;

[0032] - Figure 9 The ink delivery roller drive device of Scheme 2 is shown schematically.

[0033] - Figure 10 Displayed as a magnified image Figure 9 Details of the ink delivery roller drive mechanism X. Detailed Implementation

[0034] Figure 1 The printing press (10) shown includes a wall panel (12) for the printing unit and several rollers mounted on the wall panel (12).

[0035] One of the rollers is a printing plate roller (14).

[0036] The printing press (10) also includes an ink delivery roller drive (16).

[0037] The ink delivery roller drive (16) and the ink tray (18) work together, wherein the function of the ink tray (18) is to provide the ink required for the printing process of the printing press (10).

[0038] The ink in the ink tray (18) is applied to the printing plate roller by the ink transfer roller (20) mounted on the shaft.

[0039] The ink delivery roller drive device (16) includes a drive-side connecting rod (24a) with one end fixed to the wall plate (12), and the other end of the connecting rod is connected to the drive-side ink delivery roller shaft head (22a).

[0040] In addition, the ink delivery roller drive device (16) also includes a driven side connecting rod (24b), one end of which is fixed to the wall plate (12) and the other end is connected to the driven side ink delivery roller shaft head (22b).

[0041] The connection between the shaft core (22) of the ink roller (20) and the drive-side connecting rod (24a) and driven-side connecting rod (24b) will refer to Figures 3 to 8 Please provide an explanation.

[0042] The drive-side ink delivery roller head (22a) is connected to the drive-side connecting rod (24a) via a quick-locking unit (26), which is used to lock and release the drive-side ink delivery roller head (22a).

[0043] The same applies to the driven side ink delivery roller head (22b), where the shaft core (22) is connected to the driven side linkage (24b) via another quick-locking unit (26) for locking and releasing the driven side ink delivery roller head (22b).

[0044] The quick-locking unit (26) connecting the drive-side connecting rod (24a) and the shaft (22) and the driven-side connecting rod (24b) and the shaft (22) is basically the same.

[0045] Therefore, the quick-locking unit (26) will be described in detail, with a focus on the quick-locking unit (26) connecting the drive-side connecting rod (24a) of the shaft core (22) and the drive-side ink delivery roller head (22a). It is also applicable to the quick-locking unit (26) connecting the driven-side connecting rod (24b) of the shaft core (22) and the driven-side ink delivery roller head (22b).

[0046] The transmission side connecting rod (24a) includes a bearing housing (28) for fixing the bearing (30) on the shaft core (22) (see See) Figure 3 and Figure 4 In this embodiment, the bearing housing has a generally semi-circular cross-section. The portion of the drive-side connecting rod (24a) adjacent to the bearing housing (28) is designed with bevels (32a) and (32b) to accommodate the bearing (30) in the bearing housing (28).

[0047] The bearing housing (28) includes locating grooves (34), (36) that substantially conform to the semi-circular geometry of the bearing housing (28). Once the bearing (30) is installed in the locating grooves (34), (36), the axial movement of the bearing (30) is restricted.

[0048] The quick-locking unit (26) also includes a locking cover plate (38) fixed to the transmission side connecting rod (24a) by a pin (40).

[0049] The pin (40) is located on the transmission side connecting rod (24a) and in the waist-shaped groove (42) on the locking cover plate (38).

[0050] Therefore, the locking cover (38) can rotate about the pin (40) relative to the transmission side link (24a) and can translate relative to the transmission side link (24a) because the waist groove (42) and the pin (40) can move relative to each other.

[0051] like Figure 3 , 4As shown in Figure 6, the locking cover (38) can be in the open position. In this position, the shaft core (22), or more precisely, the bearing (30) mounted on the drive-side ink roller shaft head (22a), can be freely inserted and removed from the bearing housing (28).

[0052] After the drive-side ink delivery roller head (22a) is placed into the bearing housing (28), the locking cover plate (38) is closed, so that the drive-side ink delivery roller head (22a) and the gear in the connecting rod mesh.

[0053] To be more specific, if you want to... Figure 3 and Figure 4 To move the locking cover (38) to the closed position from the position shown, it is necessary to first rotate about the pin (40) to engage the locking piece (44) into the corresponding reverse locking device (46), which in this example includes a locking gap on the drive-side connecting rod (24a).

[0054] Starting from this position, the locking cover plate (38) is moved in a translational manner so that the locking piece (44) engages in the reverse locking device (46).

[0055] In the example, the locking piece (44) is elastic and has the form of a leaf spring.

[0056] The reverse locking device (46) includes a locking groove (48) having a cutout and shape relative to the translational direction of the locking cover (38).

[0057] Therefore, when the locking piece (44) is moved to engage with the reverse locking device (46), the locking piece (44) undergoes elastic deformation before contacting the locking groove (48).

[0058] A handle (50) is provided for moving the locking cover (38). Therefore, the locking cover (38) can be moved manually.

[0059] Furthermore, if the drive-side ink roller head (22a) is located in the bearing housing (28), the gear (52) installed on the drive-side ink roller head (22a) meshes with the adjacent gear (54) of the gear system (56) of the transmission device (58) in the drive-side connecting rod (24a).

[0060] The drive shaft (60) of the transmission device (58) is connected to the motor (62) (see [link]). Figure 2 ).

[0061] Therefore, the ink roller is driven by a motor (62) to make its internal gears rotate.

[0062] On the centerline of the drive shaft head (60), the transmission side connecting rod (24a) is connected to the drive rod (64) (see...). Figure 2 ).

[0063] The drive rod (64) drives the transmission side connecting rod (24a) and causes its power shaft head (60) to rotate along the center line.

[0064] One end of the drive rod (64) is connected to the first actuator (66) and the second actuator (68) of the rotating link, wherein the two actuators (66) and (68) are arranged in series.

[0065] Both actuators (66) and (68) are fluid cylinders.

[0066] Therefore, the transmission side connecting rod (24a) can rotate relative to the center line of the fixing hole of the wall plate (12) through the actuators (66) and (68).

[0067] These actuators (66) and (68) are specifically used to press the inking roller (20) onto the printing plate roller (14) during the printing process.

[0068] In this case, it is important to note that the locking cover (38) of the inking roller drive (16) faces the printing plate roller (14). Therefore, the reverse force applied to the inking roller (20) by pressing the inking roller (20) onto the printing plate roller (14) is directly transmitted to the drive-side connecting rod (24a) or the driven-side connecting rod (24b).

[0069] In other words, the locking cover (38) has virtually no force applied during operation.

[0070] The drive-side connecting rod (24a) and the driven-side connecting rod (24b) are arranged on the outside of the ink disk (18).

[0071] Therefore, the process of connecting the ink roller to the drive-side connecting rod (24a) and the driven-side connecting rod (24b) of the ink roller drive device can be performed as follows:

[0072] Under initial conditions, the ink delivery roller (20) is arranged such that the shaft core (22) is placed in the corresponding grooves (70) on both sides of the ink tray (18) (see...). Figure 3 and Figure 4 ).

[0073] The locking cover (38) is in the open state, and the other ends of the drive-side connecting rod (24a) and the driven-side connecting rod (24b) are positioned below the drive-side ink roller head (22a) and the driven-side ink roller head (22b).

[0074] During the first movement, the drive-side connecting rod (24a) and the driven-side connecting rod (24b) are raised, causing their bearings (30) to enter the grooves (28) on the corresponding drive-side connecting rod (24a) or driven-side connecting rod (24b) (see See Figure 6 This is accomplished by using the first actuator (66).

[0075] Subsequently, the locking covers (38) on the drive-side connecting rod (24a) and the driven-side connecting rod (24b) close, as described above (see [link]). Figure 7 ).

[0076] Subsequently, the drive-side connecting rod (24a) and the driven-side connecting rod (24b) raise the connected inking roller (20) above the ink disk (18), at which point the inking roller (20) contacts the printing plate roller (14) (see [link]). Figure 8 This is accomplished by using a second actuator (68).

[0077] To remove the ink roller (20) from the ink roller drive (16), simply perform the above steps in reverse order.

[0078] Scheme 2 for the ink delivery roller drive device (16) is as follows: Figure 9 As shown. Only the differences from the preferred solution are explained. Now, the pin (40) is fixed to the locking cover (38), so that the locking cover (38) can only rotate relative to the corresponding drive-side connecting rod (24a) or driven-side connecting rod (24b).

[0079] In Scheme 2, the locking cover (38) includes a clamping device (72) adapted to cooperate with a reverse clamping device (74) provided on the corresponding drive-side link (24a) or driven-side link (24b) (see [reference]). Figure 10 The clamping device (72) and the reverse clamping device (74) may be interlocked to prevent the locking cover (38) from rotating out of its closed position.

[0080] Furthermore, according to Scheme 2, the drive-side connecting rod (24a) and driven-side connecting rod (24b) of the ink roller drive are each equipped with a locking actuator (76), which in this example is a cylinder. The locking actuator (76) is connected to the corresponding locking cover (38), so that the locking cover (38) can be selectively opened and closed.

Claims

1. A ink roller drive assembly (16) of a printing press (10) comprising: an ink roller (20) mounted on a shaft core (22), a drive side link (24a) having a first end pivotably fixed to a wall plate (12) and a second end connected to a drive side ink roller shaft head (22a), wherein a quick locking unit (26) fixes the transmission side ink feed roller shaft head (22a) and the second end of the transmission side link (24a) together, the quick locking unit (26) being configured to release and lock the transmission side ink feed roller shaft head (22a), characterized in that said quick locking unit (26) comprising a locking cover plate (38) rotatably mounted on said drive side link (24a) such that said locking cover plate (38) locks said drive side ink roller shaft head (22a) in a closed position and releases said drive side ink roller shaft head (22a) in an open position.

2. The ink roller drive (16) according to claim 1, characterized in that a driven side link (24b) having one end fixed to the wall plate (12) and another end connected to a driven side ink roller shaft head (22b), wherein a quick locking unit (26) fixes the driven side ink roller shaft head (22b) and the driven side link (24b) together, the release and locking of the driven side ink roller shaft head (22b) being achieved by opening and closing of the quick locking unit (26), the quick locking unit (26) comprising a rotatable locking cover plate (38) mounted on the driven side link (24b) such that the locking cover plate (38) locks the driven side ink roller shaft head (22b) in a closed position and releases the driven side ink roller shaft head (22b) in an open position.

3. Ink roller drive (16) according to claim 1 or 2, characterized in that the locking cover plate (38) is mounted on the respective drive side link (24a) or driven side link (24b) by a pin (40).

4. The ink roller drive (16) according to claim 3, characterized in that said pin (40) has a waist-shaped slot (42) such that the locking cover plate (38) translates along the waist-shaped slot (42) relative to the drive side link (24a) or driven side link (24b).

5. The ink roller drive (16) according to claim 4, characterized in that said locking cover plate (38) has a locking tab (44) for engaging a counter locking device (46) on the respective drive side link (24a) or driven side link (24b) to prevent rotation of the locking cover plate (38).

6. The ink roller drive (16) of claim 3, wherein, said pin (40) is fixed in the waist-shaped slot such that the locking cover plate (38) is only rotatable relative to the respective drive side link (24a) or driven side link (24b).

7. The ink roller drive (16) according to claim 6, characterized in that said locking cover plate (38) comprises a clamping device (72) and the drive side link (24a) or driven side link (24b) comprises a counter clamping device (74), wherein the clamping device (72) and the counter clamping device (74) are interlockable to prevent rotation of the locking cover plate (38).

8. An ink roller drive (16) according to claim 1 or 2, characterized in that said locking cover plate (38) has a handle (50) for facilitating manual operation of the locking cover plate (38).

9. An ink roller drive (16) according to claim 1 or 2, characterized in that a locking actuator (76) is fixed at one end to the drive side link (24a) and the driven side link (24b) and is connected at another end to the respective locking cover plate (38) to effect opening and closing of the locking cover plate (38).

10. The ink roller drive (16) according to claim 1 or 2, characterized in that a first actuator (66) for rotating the links, wherein one end of the first actuator (66) is connected to one of the drive side link (24a) and the driven side link (24b) such that the respective drive side link (24a) or driven side link (24b) is rotated by extension or retraction of the first actuator (66).

11. The ink roller drive (16) according to claim 10, characterized in that The first actuator (66) is a pneumatic cylinder.

12. The ink roller drive (16) of claim 10, wherein, A second actuator (68) for rotating the connecting rod is arranged in series with the first actuator (66), one end of which is fixed to the wall plate (12), and the corresponding driving side connecting rod (24a) or driven side connecting rod (24b) can be rotated by elongating or contracting the second actuator (68), and the first actuator (66) and the second actuator (68) can be used in cooperation to make the ink roller (20) work at different positions.

13. The ink roller drive (16) of claim 12, characterized by The second actuator (68) is a pneumatic cylinder.

14. The ink roller drive (16) according to claim 1 or 2, characterized in that The driving side connecting rod (24a) drives the ink roller (20) through the transmission device (58) when the shaft core (22) is locked by the quick locking unit (26).

15. The ink roller drive (16) according to claim 14, characterized in that The transmission device (58) comprises a gear train (56) which transmits the movement to the gear (52) of the driving side ink roller shaft head (22a).

16. An ink roller drive (16) according to claim 1 or 2, characterized in that The ink tray (18), wherein the driving side connecting rod (24a) and / or the driven side connecting rod (24b) are arranged outside the ink tray (18).

17. A printing machine (10) having an ink roller transmission device (16) and a printing plate roller (14) according to any one of the preceding claims, wherein the ink roller (20) is used to provide ink to the printing plate roller (14), and the locking cover plate (38) of the ink roller transmission device (16) faces the printing plate roller (14).

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