Large tonnage plate roll turning apparatus

Abstract

The application relates to the printing industry field, in particular to a large-tonnage plate roller turning device which comprises a first mounting table, a second mounting table, a first sliding seat and a second sliding seat, the first sliding seat is rotationally connected with a turnover table, one end of the turnover table is provided with a turnover tray, a first positioning column and a first electromagnetic group, the first electromagnetic group is connected to the turnover tray and is annularly distributed around the first positioning column, one side of the turnover tray close to the first electromagnetic group is provided with an induction mechanism, one side of the turnover tray close to the first electromagnetic group is connected with the induction mechanism, the induction mechanism is used for inducting that a plate roller is attached to the first electromagnetic group and transmitting a magnetic signal to the first electromagnetic group. The application has the effect of improving the turnover efficiency of the large-tonnage plate roller.

Description

Technical Field

[0001] This application relates to the printing industry, and in particular to a large-tonnage plate roller turning device. Background Technology

[0002] Printing rollers are the core components of printing equipment, mainly used to transfer the images and text on the printing plate to the substrate. When using printing rollers, it is often necessary to install or replace the printing plate. Most printing rollers are stored in a special storage compartment.

[0003] The existing printing plate cylinder flipping device disclosed in CN218560238U involves inserting the printing plate cylinder into the first positioning post, then energizing the first electromagnetic block group to attract the vertically positioned printing plate cylinder. A pressing drive drives a pressing block to press the attracted printing plate cylinder against the flipping frame. A flipping cylinder drives the flipping frame to flip, thereby rotating the printing plate cylinder from a vertical to a horizontal position. The second positioning post is inserted into the end of the printing plate cylinder away from the first positioning post, and the outer electromagnetic block group is energized to attract the printing plate cylinder, thus stably attracting it and facilitating the transport machine to directly move the horizontally positioned printing plate cylinder for use. However, when the printing plate cylinder is placed on the flipping frame, the first electromagnetic block group cannot attract and flip the printing plate cylinder in time, resulting in low printing plate cylinder flipping efficiency. Utility Model Content

[0004] In order to improve the turning efficiency of large-tonnage printing rollers, this application provides a large-tonnage printing roller turning device.

[0005] This application provides a large-tonnage plate roller turning device, which adopts the following technical solution: A large-tonnage printing roller turning device includes a first mounting platform, a second mounting platform, a first sliding seat, and a second sliding seat. The first sliding seat is rotatably connected to a tilting platform. One end of the tilting platform is provided with a tilting tray, a first positioning post, and a first electromagnetic group. The first electromagnetic group is connected to the tilting tray and is distributed in a ring around the first positioning post. A sensing mechanism is provided on the side of the tilting tray near the first electromagnetic group. The sensing mechanism is used to sense that the printing roller is in contact with the first electromagnetic group and to transmit a magnetic signal to the first electromagnetic group.

[0006] By adopting the above technical solution, the printing roller is inserted into the first positioning post, and the sensing mechanism senses the state in which the printing roller is attached to the first electromagnetic group. Then, it transmits a magnetic signal to the first electromagnetic group to energize it. Since the first electromagnetic group is distributed in a ring around the first positioning post, it can form a stable adsorption effect on the large-tonnage printing roller. Throughout the process, the sensing mechanism detects the attachment state of the printing roller in real time and triggers the adsorption of the first electromagnetic group in a timely manner. Compared with the situation in the prior art where the adsorption of the first electromagnetic block group is not timely, the turning efficiency of the printing roller is significantly improved.

[0007] Optionally, the sensing mechanism includes a mounting block and a sensing element. The mounting block is connected to the flip tray, and a sensing groove is provided on the side of the mounting block away from the flip tray. The sensing end of the sensing element is located in the sensing groove.

[0008] By adopting the above technical solution, the sensing end of the sensing element is placed in the sensing groove opened in the mounting block, which enables the sensing mechanism to more accurately sense the bonding of the printing rollers and ensures that the magnetic signal is stably transmitted to the first electromagnetic group.

[0009] Optionally, the first electromagnetic group includes a plurality of first electromagnetic blocks distributed circumferentially along the first positioning post. A protection mechanism is connected to the side of the flip tray near the first electromagnetic blocks. The protection mechanism is electrically connected to the first electromagnetic blocks. The protection mechanism and the sensing mechanism are radially distributed along the center of the first positioning post.

[0010] By adopting the above technical solution, multiple first electromagnetic blocks distributed circumferentially along the first positioning post can further ensure the stable adsorption of the large-tonnage printing roller, reducing the possibility of the printing roller loosening during the flipping process. At the same time, the protection mechanism and the sensing mechanism are radially distributed along the center of the first positioning post, which can play a protective role when the sensing mechanism may malfunction. Together with the sensing mechanism, they can ensure the timely adsorption and stable flipping of the printing roller, reducing the possibility that the first electromagnetic group cannot be magnetized in time due to the failure of the sensing mechanism, thereby further improving the printing roller flipping efficiency.

[0011] Optionally, the protection mechanism includes a mounting base, a pressing cover, an elastic element, and a tactile switch. The mounting base is connected to the flip tray, the pressing cover is slidably connected to the mounting base, and the pressing cover is located at the end of the mounting base away from the flip tray. One end of the elastic element is connected to the mounting base, and the end of the elastic element away from the mounting base is connected to the pressing cover. A pressing groove is provided on the side of the mounting base near the pressing cover, and the tactile switch is located in the pressing groove.

[0012] By adopting the above technical solution, when the sensing mechanism fails, the printing roller pushes the pressing cover to squeeze the elastic element, causing the pressing cover to trigger the light-touch switch, thereby controlling the first electromagnetic group to be energized to adsorb the printing roller, providing double protection for the adsorption of the printing roller, further improving the reliability and stability of the equipment operation, and ensuring that large-tonnage printing rollers can be effectively adsorbed under various conditions.

[0013] Optionally, one end of the first mounting platform is connected to a first limiting plate, which is used to limit the sliding stroke of the first sliding seat, and one end of the second mounting platform is connected to a second limiting plate, which is used to limit the sliding stroke of the second sliding seat.

[0014] By adopting the above technical solution, the setting of the first limiting plate and the second limiting plate can effectively limit the sliding stroke of the first sliding seat and the second sliding seat, reduce the possibility of them moving excessively and detaching from the first mounting platform and the second mounting platform during the sliding process, and improve the overall stability of the equipment.

[0015] Optionally, the first limiting plate is protruding on the top of the first mounting platform, and the second limiting plate is protruding on the top of the second mounting platform, with the top walls of the first limiting plate and the top walls of the second limiting plate on the same horizontal plane.

[0016] By adopting the above technical solution, when the top walls of the first limiting plate and the second limiting plate are on the same horizontal plane, a stable support plane can be formed. After the printing roller is flipped to a horizontal state, this plane can effectively bear the weight of the printing roller, reduce the possibility of the printing roller tilting or slipping due to the shift of the center of gravity or the action of external force, and improve the stability of the printing roller in a horizontal state.

[0017] Optionally, the first electromagnetic group may also include multiple outer ring electromagnetic blocks, which are distributed circumferentially around the first positioning post.

[0018] By adopting the above technical solutions, the magnetic force distribution becomes more uniform, further enhancing the adsorption capacity for large-tonnage printing rollers, reducing the possibility of slippage caused by uneven force during the roller flipping process, and improving the stability and safety of equipment operation.

[0019] Optionally, the outer electromagnetic block is located outside the circle enclosed by the first electromagnetic block.

[0020] By adopting the above technical solution, the outer ring electromagnetic blocks are set on the outer side of the circle surrounded by the first electromagnetic blocks. This reduces the number of electromagnetic blocks while expanding the coverage of the electromagnetic adsorption area, making the printing roller more uniformly stressed during the flipping process. This reduces the possibility of the printing roller tilting or slipping due to uneven distribution of adsorption force, thereby further improving the stability and safety of the equipment operation.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The printing roller is inserted into the first positioning post, and the sensing mechanism senses the state in which the printing roller is attached to the first electromagnetic group. Then, it transmits a magnetic signal to the first electromagnetic group to energize it. Since the first electromagnetic group is distributed in a ring around the first positioning post, it can form a stable adsorption effect on the large-tonnage printing roller. Throughout the process, the sensing mechanism detects the attachment state of the printing roller in real time and triggers the adsorption of the first electromagnetic group in a timely manner. Compared with the situation in the prior art where the adsorption of the first electromagnetic block group is not timely, the turning efficiency of the printing roller is significantly improved. 2. Placing the sensing end of the sensing element in the sensing groove opened in the mounting block allows the sensing mechanism to more accurately sense the bonding of the printing rollers, ensuring a stable transmission of the magnetic signal to the first electromagnetic group; 3. When the sensing mechanism fails, the printing roller pushes the pressing cover to squeeze the elastic element, causing the pressing cover to trigger the light-touch switch, thereby controlling the first electromagnetic group to be energized to adsorb the printing roller. This provides double protection for the adsorption of the printing roller, further improving the reliability and stability of the equipment operation, and ensuring that large-tonnage printing rollers can be effectively adsorbed under various conditions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the position of the first limiting plate in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the position of the second limiting plate in the embodiments of this application.

[0025] Figure 4 This is a schematic diagram of the protection mechanism structure in the embodiments of this application.

[0026] Figure 5 This is a schematic diagram of the position of the clamping block in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 1. First mounting platform; 11. First limiting plate; 2. First sliding seat; 21. Tilting platform; 22. Tilting tray; 23. First positioning post; 24. First electromagnetic block; 25. Outer ring electromagnetic block; 3. Second mounting platform; 31. Second limiting plate; 4. Second sliding seat; 41. Second positioning post; 42. Second electromagnetic block; 5. Mounting block; 51. Sensing groove; 6. Protective mechanism; 61. Mounting seat; 62. Press cover; 63. Elastic element; 64. Tactile switch; 7. Clamping block. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0029] This application discloses a large-tonnage printing roller turning device.

[0030] Reference Figure 1 and Figure 2 A high-tonnage printing roller turning device includes a first mounting platform 1, a second mounting platform 3, a first sliding seat 2, and a second sliding seat 4. The first sliding seat 2 is slidably connected to the top wall of the first mounting platform 1, and the second sliding seat is slidably connected to the top wall of the second mounting platform 3. The first sliding seat 2 is rotatably connected to a flipping table 21, and the first sliding seat is fixedly connected to a flipping drive component. The output end of the flipping drive component is hinged to the flipping table 21. The flipping drive component drives the flipping table 21 to rotate on the first sliding seat 2, thereby realizing the conversion of the printing roller from a vertical state to a horizontal state. In this example, the flipping drive component adopts a drive cylinder.

[0031] The end of the flipping table 21 away from the first sliding seat is provided with a flipping tray 22, a first positioning post 23 and a first electromagnetic group. The flipping tray 22 is fixedly connected to the flipping table 21 and is located outside the first sliding seat. The first positioning post 23 is fixedly connected to the side of the flipping tray 22 away from the flipping table 21. The first electromagnetic group is fixedly connected to the flipping tray 22 and is distributed in a ring around the first positioning post 23. A sensing mechanism is fixedly connected to the side of the flipping tray 22 near the first electromagnetic group. The sensing mechanism is electrically connected to the flipping drive component. The sensing mechanism is used to sense the printing roller adhering to the first electromagnetic group and transmit a magnetic signal to the first electromagnetic group. Once the adhering status of the printing roller is sensed, a magnetic signal is transmitted to the first electromagnetic group, so that the first electromagnetic group is energized in time to attract the printing roller, which significantly improves the flipping efficiency of the printing roller.

[0032] Reference Figure 3 The second sliding seat is fixedly connected to the second positioning post 41 and the second electromagnetic block 42. The second electromagnetic block 42 is equidistantly distributed around the second positioning post 41. When the printing roller is placed horizontally, the second positioning post 41 is inserted into the shaft groove of the printing roller, and the second electromagnetic block 42 attracts the printing roller, so that the printing roller remains horizontal and improves stability.

[0033] Reference Figure 2 Furthermore, the sensing mechanism includes a mounting block 5 and a sensing element. The mounting block 5 is made of insulating material; in this embodiment, it is made of rubber. The mounting block 5 is the basic component used to mount the sensing element. The mounting block 5 is fixedly connected to the flip tray 22 by welding or bolting. A sensing groove 51 is provided on the side of the mounting block 5 away from the flip tray 22. The function of this sensing groove 51 is to provide a specific mounting position for the sensing element, so that the sensing end of the sensing element can be accurately located within the sensing groove 51. The sensing element can be a high-sensitivity proximity sensor, which has the characteristics of fast response speed and high accuracy, and can accurately detect the contact state between the printing roller and the first electromagnetic group in real time. In this example, the sensing element is a photoelectric sensor, which is characterized by high precision, high sensitivity, and fast response. When the printing roller approaches the first electromagnetic group and enters the sensing range of the photoelectric sensor, the photoelectric sensor will detect the presence of the printing roller and generate a corresponding electrical signal using the principle of light reflection or blocking. After processing, the electrical signal is converted into a magnetic signal and transmitted to the first electromagnetic group, so that the first electromagnetic group is energized in time to adsorb the printing roller. Of course, the sensing element can also be replaced by a pressure sensor, which triggers the adsorption signal by detecting the pressure of the printing roller on the flip tray 22. When the printing roller presses on the flip tray 22, the pressure sensor senses the pressure change and sends a signal to energize the first electromagnetic group to adsorb the printing roller.

[0034] The first electromagnetic group includes multiple first electromagnetic blocks 24 distributed circumferentially along the first positioning post 23. The first electromagnetic blocks 24 are cylindrical in shape. These first electromagnetic blocks 24 are arranged in a ring with the first positioning post 23 as the center and at a certain interval. This distribution method can ensure that the suction force in all directions is uniform when adsorbing the printing roller, thereby achieving stable adsorption of large-tonnage printing rollers.

[0035] However, the sensing mechanism may malfunction. When a high-sensitivity proximity sensor is used as the sensing element, the sensor's electronic components may age or become damaged, resulting in an inability to accurately detect the contact state between the printing roller and the first electromagnetic group. Alternatively, when the printing roller is placed vertically, dirt may fall into the sensing groove 51, causing the sensor to fail and thus preventing the timely transmission of the magnetic signal. In addition, external electromagnetic interference may also affect the normal operation of the sensor, causing it to emit incorrect signals or fail to emit signals. If a pressure sensor is used as the sensing element, the pressure may be inaccurate due to fatigue or deformation of the elastic element of the pressure sensor, resulting in an inability to trigger the adsorption signal. It is also possible that the installation position of the pressure sensor is loose, causing it to fail to correctly sense the pressure of the printing roller on the flipping tray 22.

[0036] Furthermore, a safety mechanism 6 is fixedly connected to the side of the flipping tray 22 near the first electromagnetic block 24. The safety mechanism 6 is electrically connected to the first electromagnetic block 24. When the sensing mechanism malfunctions, the safety mechanism 6 can still ensure the adsorption of the printing roller by the first electromagnetic group, playing a double insurance role. The safety mechanism 6 and the sensing mechanism are radially distributed along the center of the first positioning post 23, further providing reliability.

[0037] Specifically, refer to Figure 4 The protection mechanism 6 includes a mounting base 61, a pressing cover 62, an elastic element 63, and a tactile switch 64. The mounting base 61 is cylindrical in shape, and the mounting column and the first electromagnetic block 24 are arranged in an equally spaced ring. The mounting base 61 is fixedly connected to the flip tray 22 by welding. The pressing cover 62 is slidably connected to the mounting base 61, and the pressing cover 62 is located at the end of the mounting base 61 away from the flip tray 22. The sliding direction of the pressing cover 62 is perpendicular to the top wall of the flip tray 22. One end of the elastic element 63 is fixedly connected to the mounting base 61, and the other end of the elastic element 63 away from the mounting base 61 is fixedly connected to the pressing cover 62. The elasticity of the spring allows the pressing cover 62 to move toward the flip tray 22 when subjected to the pressure of the printing roller, and to return to its original position after the pressure is removed. In this embodiment, the elastic element 63 is a spring.

[0038] The mounting base 61 has a pressing groove on one end near the pressing cover 62. The tactile switch 64 is located in the pressing groove. The tactile switch 64 is connected to the inner ring. The structure of the tactile switch 64 is that the button moves, causing the contact spring or conductive rubber block to contact the solder sheet to form a passage. This is existing technology and will not be described in detail here. When the printing roller contacts the pressing cover 62 and pressure is applied, the pressing cover 62 presses the elastic element 63 towards the flip tray 22 until it touches the tactile switch 64. After the tactile switch 64 is triggered, it forms a passage to transmit a magnetic signal to the first electromagnetic block 24. Even if the sensing mechanism fails, the protection mechanism 6 can ensure that the first electromagnetic block 24 can normally adsorb the printing roller.

[0039] The first electromagnetic group also includes multiple outer electromagnetic blocks 25, which are distributed circumferentially around the first positioning post 23. In this example, four outer electromagnetic blocks 25 are provided and located outside the circle enclosed by the first electromagnetic block 24. The outer electromagnetic blocks 25 are electrically connected to the flipping drive and the tactile switch 64, further enhancing the adsorption force of the first electromagnetic group on the printing roller. Especially for large-tonnage printing rollers, it can provide a more stable adsorption effect. When the first electromagnetic group is energized, the first electromagnetic block 24 and the outer electromagnetic blocks 25 work together to adsorb the printing roller from different positions, greatly improving the stability and reliability of the adsorption.

[0040] Furthermore, a first limiting plate 11 is fixedly connected to one end of the first mounting platform 1. The first limiting plate 11 is used to limit the sliding stroke of the first sliding seat 2. A second limiting plate 31 is fixedly connected to one end of the second mounting platform 3. The second limiting plate 31 is used to limit the sliding stroke of the second sliding seat 4, thereby reducing the first sliding seat 2 and the second sliding seat from exceeding the predetermined range during the sliding process and ensuring the safe and stable operation of the equipment.

[0041] The first limiting plate 11 is protruding on the top wall of the first mounting platform 1, and the second limiting plate 31 is protruding on the top wall of the second mounting platform 3. In this example, both the first limiting plate 11 and the second limiting plate 31 are made of rubber. When the printing roller flips from a vertical position to a horizontal position, the printing roller impacts the first limiting plate 11 and the second limiting plate 31. The first limiting plate 11 and the second limiting plate 31 buffer the printing roller, reducing the possibility of damage to the printing roller and reducing noise during production. Moreover, the top walls of the first limiting plate 11 and the second limiting plate 31 are on the same horizontal plane, which facilitates the support of the printing roller.

[0042] Furthermore, refer to Figure 5It is also provided with a pressing block 7, which is used to press the printing roller after the first electromagnetic block 24 is attracted, so that the printing roller is stably pressed against the first electromagnetic block 24. The pressing block 7 is rotatably connected to the first positioning post 23. The setting and application of the pressing block 7 have been disclosed in publication number CN218560238U, and will not be described in detail here.

[0043] The implementation principle of this embodiment is as follows: When the printing roller is inserted into the first positioning post 23, and the sensing element detects that the printing roller is in contact with the side of the first electromagnetic group away from the flip tray 22, it immediately transmits a magnetic signal to the first electromagnetic group. After the first electromagnetic group is energized, the first electromagnetic block 24 and the outer ring electromagnetic block 25 jointly attract the printing roller. At the same time, the printing roller contacts and presses the pressing cover 62. The pressing cover 62 compresses the elastic element 63, which touches the tactile switch 64. The tactile switch 64 is triggered, thereby transmitting a magnetic signal to the first electromagnetic group, reducing the risk of the first electromagnetic group failing to timely adjust the printing roller due to the failure of the sensing element. Following the adsorption, the pressing block 7 presses the printing roller, and the flipping drive drives the flipping table 21 to rotate, causing the printing roller to rotate from a vertical position to a horizontal position. The second sliding seat slides on the top wall of the second mounting base 61 toward the printing roller, so that the second positioning post 41 is inserted into the shaft groove of the printing roller. The second electromagnetic block 42 adsorbs the printing roller, so that the printing roller is stably kept in a horizontal position. Compared with the prior art, this embodiment can trigger the first electromagnetic group to adsorb the printing roller in time through the dual action of the sensing mechanism and the protection mechanism 6, which significantly improves the flipping efficiency of the printing roller.

[0044] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A large-tonnage printing roller turning device, characterized in that, It includes a first mounting platform (1), a second mounting platform (3), a first sliding seat (2) and a second sliding seat (4). The first sliding seat (2) is rotatably connected to a flipping table (21). One end of the flipping table (21) is provided with a flipping tray (22), a first positioning post (23) and a first electromagnetic group. The first electromagnetic group is connected to the flipping tray (22) and is distributed in a ring around the first positioning post (23). The flipping tray (22) is provided with a sensing mechanism on the side near the first electromagnetic group. The sensing mechanism is used to sense the printing roller adhering to the first electromagnetic group and to transmit a magnetic signal to the first electromagnetic group.

2. The large-tonnage plate roller turning device according to claim 1, characterized in that, The sensing mechanism includes a mounting block (5) and a sensing element. The mounting block (5) is connected to the flip tray (22). A sensing groove (51) is provided on the side of the mounting block (5) away from the flip tray (22). The sensing end of the sensing element is located in the sensing groove (51).

3. The large-tonnage plate roller turning device according to claim 1, characterized in that, The first electromagnetic group includes multiple first electromagnetic blocks (24) distributed circumferentially along the first positioning post (23). A protective mechanism (6) is connected to the side of the flip tray (22) near the first electromagnetic block (24). The protective mechanism (6) is electrically connected to the first electromagnetic block (24). The protective mechanism (6) and the sensing mechanism are radially distributed along the center of the first positioning post (23).

4. A large-tonnage plate roller turning device according to claim 3, characterized in that, The protection mechanism (6) includes a mounting base (61), a pressing cover (62), an elastic element (63), and a tactile switch (64). The mounting base (61) is connected to the flip tray (22). The pressing cover (62) is slidably connected to the mounting base (61), and the pressing cover (62) is located at the end of the mounting base (61) away from the flip tray (22). One end of the elastic element (63) is connected to the mounting base (61), and the end of the elastic element (63) away from the mounting base (61) is connected to the pressing cover (62). A pressing groove is provided on the side of the mounting base (61) near the pressing cover (62), and the tactile switch (64) is located in the pressing groove.

5. A large-tonnage plate roller turning device according to claim 1, characterized in that, One end of the first mounting platform (1) is connected to a first limiting plate (11), which is used to limit the sliding stroke of the first sliding seat (2). One end of the second mounting platform (3) is connected to a second limiting plate (31), which is used to limit the sliding stroke of the second sliding seat (4).

6. A large-tonnage plate roller turning device according to claim 5, characterized in that, The first limiting plate (11) is protruding and is located on the top of the first mounting platform (1), and the second limiting plate (31) is protruding and is located on the top of the second mounting platform (3). The top wall of the first limiting plate (11) and the top wall of the second limiting plate (31) are on the same horizontal plane.

7. A large-tonnage plate roller turning device according to claim 1, characterized in that, The first electromagnetic group also includes multiple outer ring electromagnetic blocks (25), which are distributed circumferentially around the first positioning post (23).

8. A large-tonnage plate roller turning device according to claim 5, characterized in that, The outer electromagnetic block (25) is located outside the circle enclosed by the first electromagnetic block (24).

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