Mechanical structure for plate change on a pin satellite flexo press

Abstract

The utility model discloses a mechanical structure is changed on plate of needle satellite type soft printing machine belongs to the technical field of soft printing machine auxiliary equipment, including plate roll, it is along the first direction horizontal setting, mechanical hand, including installation structure and with installation structure fixed connection's connecting arm, installation structure fixed connection in plate roll's rotation axis, horizontal movement mechanism, along second direction setting, second direction with first direction vertical setting, connecting arm sliding connection in horizontal movement mechanism, and mechanical hand is used for driving plate roll to realize horizontal linear motion in second direction, vertical movement mechanism, along third direction setting, horizontal movement mechanism sliding connection in vertical movement mechanism so that horizontal movement mechanism can realize lifting motion in third direction. Through adjusting horizontal movement mechanism and vertical movement mechanism, mechanical hand can make fine adjustment, and position plate roll, avoid the technical defects of manual dismounting installation plate roll, plate roll installation position limited in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for flexographic printing machines, and in particular to the mechanical structure for changing the plate on a pin-type satellite flexographic printing machine. Background Technology

[0002] In industrial production fields such as printing and packaging, printing rollers, as core printing components, need to be frequently replaced to adapt to the production requirements of different patterns or specifications. Traditional printing roller replacement mainly relies on manual operation or semi-automatic equipment, which has the following significant drawbacks:

[0003] Firstly, the manual disassembly and installation of the printing rollers is time-consuming, affecting the continuity of the production line;

[0004] Secondly, the alignment of the printing rollers depends on the operator's experience, which can easily lead to installation deviations and inaccurate color registration during printing.

[0005] While some existing technologies offer automated roller changing solutions, they generally suffer from problems such as complex structures, limited freedom of movement, or high costs. Utility Model Content

[0006] To overcome the technical problems of complex plate-changing roller structures and limited freedom of movement in existing technologies, this utility model provides a plate-changing mechanical structure for a satellite-type flexographic printing machine. The structure includes the flexographic printing machine itself, and further includes: a plate roller, horizontally arranged along a first direction; a robotic arm, including a mounting structure and a connecting arm fixedly connected to the mounting structure, the mounting structure being fixedly connected to the rotation axis of the plate roller; a horizontal motion mechanism, arranged along a second direction perpendicular to the first direction, the connecting arm being slidably connected to the horizontal motion mechanism, the robotic arm being used to drive the plate roller to achieve horizontal linear movement in the second direction; and a vertical motion mechanism, arranged along a third direction perpendicular to the second direction, the horizontal motion mechanism being slidably connected to the vertical motion mechanism so that the horizontal motion mechanism can achieve lifting and lowering movement in the third direction.

[0007] Furthermore, the mounting structure includes a fixed part, a movable part, a sensing probe, a locking cylinder, and an air circuit control unit, wherein the air circuit control unit is connected to the control system.

[0008] The fixed part is used to clamp the rotating shaft of the printing roller; the movable part is connected to the fixed part and is used to adjust the clamping force of the fixed part; the movable part is fixedly connected to the rotating shaft of the printing roller and can slide radially along the rotating shaft of the printing roller; the sensing probe is mounted on the movable part; the locking cylinder is connected to the air circuit control unit and is linked to the movable part; the air circuit control unit controls the action of the locking cylinder so that the locking cylinder can drive the movable part to slide radially or lock the position of the movable part.

[0009] Furthermore, the connecting arm has an L-shaped structure and an arc-shaped transition.

[0010] Furthermore, the horizontal motion mechanism includes: a base; at least one set of horizontal guide rails fixedly connected to the base; a horizontal slider, the connecting arm fixedly connected to the horizontal slider, and the horizontal slider slidably connected to the horizontal guide rails; and a horizontal driving device for driving the horizontal slider to move along the horizontal guide rails.

[0011] Furthermore, the horizontal drive device includes a gear rack and a first servo motor. The gear rack is connected to the base, the base is connected to the horizontal guide rail, the gear rack is connected to the horizontal guide rail, and both are connected to the first servo motor. The gear rack is driven by the first servo motor, which is fixedly mounted on the base.

[0012] Furthermore, the vertical motion mechanism includes: at least one set of vertical guide rails; a vertical lifting platform, wherein the vertical guide rails are fixedly installed in the vertical lifting platform and are arranged along the height direction of the vertical lifting platform; and a vertical drive device for driving the horizontal motion mechanism to move along the vertical guide rails.

[0013] Furthermore, the vertical drive device includes a rack and pinion drive pair and a second servo motor connected to the rack and pinion drive pair. The second servo motor is used to drive the rack and pinion drive pair to move. The rack and pinion drive pair is connected to the second servo motor. The end of the rack and pinion drive pair away from the vertical guide rail is fixedly connected to the base. The rack and pinion drive pair can move along the length direction of the vertical guide rail.

[0014] Furthermore, the first servo motor and the second servo motor are communicatively connected to the control system for controlling the synchronous movement of the first servo motor and the second servo motor.

[0015] Beneficial effects:

[0016] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0017] The printing roller refers to the printing roller on a flexographic printing machine. The printing roller is replaceable and is horizontally positioned along a first direction. A horizontal motion mechanism is positioned along a second direction and is connected to the printing roller via a robotic arm. The robotic arm's mounting structure is fixedly connected to the printing roller's rotating shaft, and its connecting arm is slidably connected to the horizontal motion mechanism. The robotic arm can move back and forth along the length of the horizontal motion mechanism. The horizontal motion mechanism is slidably connected to a vertical motion mechanism, which is positioned along a third direction (vertical). The horizontal motion mechanism can move along the length of the vertical motion mechanism, thus achieving lifting and lowering through the vertical motion mechanism. By adjusting the horizontal and vertical motion mechanisms, the robotic arm gains freedom of movement, enabling fine-tuning and positioning of the printing roller, thus avoiding the technical defects of manual disassembly and installation of the printing roller and limited positioning during installation in existing technologies. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the mechanical structure for changing the printing plate on a satellite-type flexographic printing press according to this utility model.

[0020] Figure 2 This is a schematic diagram of the horizontal movement mechanism of the plate-changing mechanical structure of the ejector pin satellite type flexographic printing machine of this utility model;

[0021] Figure 3 This is a schematic diagram of another state of the horizontal movement mechanism of the plate-changing mechanical structure of the ejector pin satellite type flexographic printing machine of this utility model;

[0022] Figure 4 This is a schematic diagram of the vertical motion mechanism of the plate-changing mechanical structure of the ejector pin satellite type flexographic printing machine of this utility model.

[0023] Explanation of the reference numerals in the figure:

[0024] 1. Printing roller; 100. Rotating shaft; 2. Robotic arm; 21. Mounting structure; 22. Connecting arm; 3. Horizontal motion mechanism; 31. Base; 32. Horizontal guide rail; 33. Horizontal drive device; 331. Gear and rack; 332. First servo motor; 34. Horizontal slider; 4. Vertical motion mechanism; 41. Vertical guide rail; 42. Vertical lifting platform; 43. Vertical drive device; 431. Gear and rack transmission pair; 432. Second servo motor. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It is worth noting that the first direction refers to the X-axis direction, the second direction refers to the Y-axis direction, and the third direction refers to the Z-axis direction. The first direction X and the second direction Y form the XY plane, and the third direction is perpendicular to the vertical direction of the XY plane.

[0027] Please refer to Figures 1 to 4 The plate-changing mechanism of the satellite-type flexographic printing press includes a flexographic printing press 101, and further includes: a plate roller 1, which is horizontally arranged along a first direction; a robot arm 2, which includes a mounting structure 21 and a connecting arm 22 fixedly connected to the mounting structure 21, the mounting structure 21 being fixedly connected to the rotation shaft 100 of the plate roller 1; a horizontal motion mechanism 3, which is arranged along a second direction, the second direction being perpendicular to the first direction, the connecting arm 22 being slidably connected to the horizontal motion mechanism 3, the robot arm 2 being used to drive the plate roller 1 to achieve horizontal linear motion in the second direction; and a vertical motion mechanism 4, which is arranged along a third direction, the third direction being perpendicular to the second direction, the horizontal motion mechanism 3 being slidably connected to the vertical motion mechanism 4 so that the horizontal motion mechanism 3 can achieve lifting and lowering motion in the third direction.

[0028] In this technical solution, the printing roller 1 refers to the printing roller 1 on the flexographic printing machine, which can be replaced. The printing roller 1 is horizontally arranged along the first direction. The horizontal motion mechanism 3 is arranged along the second direction and is connected to the printing roller 1 via a robot arm 2. The mounting structure 21 of the robot arm 2 is fixedly connected to the rotating shaft 100 of the printing roller 1. The connecting arm 22 of the robot arm 2 is slidably connected to the horizontal motion mechanism 3, and the robot arm 2 can move back and forth along the length direction of the horizontal motion mechanism 3. The horizontal motion mechanism 3 is slidably connected to the vertical motion mechanism 4, which is arranged along a third direction, which is actually the vertical direction. The horizontal motion mechanism 3 can move along the length direction of the vertical motion mechanism 4, that is, the horizontal motion mechanism 3 achieves lifting and lowering through the vertical motion mechanism 4. By adjusting the horizontal motion mechanism 3 and the vertical motion mechanism 4, the robot arm 2 has a degree of freedom of movement and can make fine adjustments to position the printing roller 1, avoiding the technical defects of manual disassembly and installation of the printing roller and the limited positioning of the printing roller in the prior art.

[0029] The specific embodiment of the robotic arm 2 mounting structure 21 is as follows: Figure 2 As shown, the mounting structure 21 includes a fixed part, a movable part, a sensing probe, a locking cylinder, and an air circuit control unit, wherein the air circuit control unit is connected to the control system.

[0030] The fixed part is used to clamp the rotating shaft 100 of the printing roller 1; the movable part is connected to the fixed part and is used to adjust the clamping force of the fixed part; the movable part is fixedly connected to the rotating shaft 100 of the printing roller 1 and can slide radially along the rotating shaft 100 of the printing roller 1; the sensing probe is installed on the movable part; the locking cylinder is connected to the air circuit control unit and is linked to the movable part; the air circuit control unit controls the action of the locking cylinder so that the locking cylinder can drive the movable part to slide radially or lock the position of the movable part.

[0031] The fixed part and the movable part are fixedly connected. The fixed part is used to clamp the rotating shaft 100 of the printing roller 1, while the movable part is used to adjust the clamping force of the fixed part. The movable part is located at the top of the fixed part. The fixed part clamps the rotating shaft 100 of the printing roller 1. One end of the movable part is fixed to the rotating shaft 100 of the printing roller 1, while the other end of the movable part can slide radially along the rotating shaft 100 fixed to the printing roller 1. The sensing probe is installed on the movable part, which is also linked to the locking cylinder. The pneumatic control unit controls the action of the locking cylinder. When the flexographic printing machine does not need to change plates, the movable part is in its natural state, that is, the movable part is locked by the locking cylinder at the end away from the fixed part, and the movable part cannot slide radially. When the flexographic printing machine needs to change plates, the pneumatic control unit moves the locking cylinder to the other end. One cylinder chamber provides compressed air to drive the piston rod of the locking cylinder. The moving part slides radially toward the end away from the fixed part. When the locking cylinder reaches the target position or stops and locks, the pneumatic control unit receives a signal and controls the piston rod to stop moving. At this time, the fixed part releases the rotating shaft 100 of the plate roller 1, and the plate roller is removed for plate changing. After the plate changing is completed, the other cylinder chamber of the locking cylinder exhausts air, the pneumatic control unit cuts off the air supply, the piston rod moves in the opposite direction, and the moving part is in a released state. That is, the moving part can slide radially toward the end of the fixed part until the fixed part can clamp the rotating shaft 100 of the plate roller 1. After the plate roller is positioned, it is not easy to deviate. The plate changing operation is time-saving and labor-saving, and the operation is simple. It solves the technical defects of inaccurate plate roller positioning and low plate changing efficiency in the background technology of flexographic printing machines.

[0032] It should be noted that the locking cylinder is a double-acting cylinder, which has two movements: extension and retraction. The extension and retraction of its piston rod are achieved by changes in air pressure, which is existing technology and will not be elaborated here.

[0033] The pneumatic control unit includes a solenoid valve and a drive air source circuit. The drive air source circuit starts and supplies air, and the solenoid valve controls the flow of air, thereby realizing the change of the locking cylinder. The pneumatic control unit is a common actuator and will not be described in detail here.

[0034] The fixed part includes an upper jaw and a lower jaw, which are hinged together. The portion below the common hinge end is the rotating shaft 100 for clamping the printing roller of the flexographic printing machine, and the moving part is fixedly connected to the lower jaw. The portion above the common hinge end of the upper and lower jaws is formed by a portion of the lower jaw protruding relative to the upper jaw. This portion is fixedly connected to the moving part. When the moving part moves radially, it drives the clamping action of the lower jaw, which in turn drives the clamping action of the upper jaw, resulting in a smooth and stable structure.

[0035] The movable part includes a first base, a second base, and a sliding column. The first base and the second base are disposed opposite to each other. The first base has a first surface, and the second base has a second surface and a sliding hole. One end of the sliding column passes through the sliding hole, and the other end of the sliding column is embedded in the first surface. A movable space is formed between the first surface and the second surface, and the sliding column can drive the first base and the second base to produce relative displacement. The end of the first base away from the second base is fixedly connected to the rotating shaft 100, and the movable part has a stable structure.

[0036] The sensing probe is located in the movable space, with one end fixedly mounted on the second surface and the other end facing the first surface. This precise measurement of the displacement of the second surface relative to the first surface allows for accurate detection of even minute changes in the movable space, enabling timely feedback of the signal to the pneumatic control unit and prompting the locking cylinder to react promptly.

[0037] The connecting arm 22 of the robotic arm 2 has an L-shaped structure and a curved transition. The mounting structure 21 is fixedly connected to the connecting arm 22, which facilitates the installation of the mounting structure 21 on the rotating shaft 100. The mounting structure 21 can be finely adjusted according to the size and specifications of the rotating shaft 100, and the mounting structure 21 can be fitted and fixed on the rotating shaft 100.

[0038] The specific implementation method of the horizontal motion mechanism 3 is as follows: Figure 2 and Figure 3 As shown, the horizontal motion mechanism 3 includes: a base 31; at least one set of horizontal guide rails 32, which are fixedly connected to the base 31; a horizontal slider 34, which is fixedly connected to the connecting arm 22 and slidably connected to the horizontal guide rails 32; and a horizontal drive device 33 for driving the horizontal slider 34 to move along the horizontal guide rails 32. In this technical solution, there are two horizontal motion mechanisms 3, located at the beginning and end of the printing roller 1 respectively. The base 31 is perpendicular to the printing roller 1, and the horizontal guide rail 32 is connected to the base 31. The horizontal drive device 33 can drive the horizontal guide rail 32 to move. The horizontal guide rail 32 is a track composed of gears driving a synchronous belt, which is a conventional technical means and will not be described in detail here. The two horizontal guide rails 32 are arranged opposite to each other, and a horizontal slider 34 is installed on the horizontal guide rail 32. The horizontal drive device 33 controls the horizontal slider 34 to move along the length direction of the horizontal guide rail 32. The horizontal slider 34 is fixedly connected to the mounting slider 222. Therefore, the robot arm 2 can also move synchronously along the length direction of the horizontal guide rail 32.

[0039] The specific embodiment of the horizontal drive device 33 is as follows: Figure 3 As shown, the horizontal drive device 33 includes a gear rack 331 and a first servo motor 332. The gear rack 331 is connected to the base 31, and the base 31 is connected to the horizontal guide rail 32. The gear rack 331 and the horizontal guide rail 32 are connected together to the first servo motor 332, and the gear rack 331 is driven by the first servo motor 332. The first servo motor 332 is fixedly installed on the base 31, which has a convenient structure and stable transmission.

[0040] The specific embodiment of the vertical motion mechanism 4 is as follows: Figure 4 As shown, the vertical motion mechanism 4 includes: at least one set of vertical guide rails 41; a vertical lifting platform 42, wherein the vertical guide rails 41 are fixedly installed in the vertical lifting platform 42 and are arranged along the height direction of the vertical lifting platform 42; and a vertical drive device 43 for driving the horizontal motion mechanism 3 to move along the vertical guide rails 41. Two vertical motion mechanisms 4 are provided, respectively connected to the horizontal motion mechanism 3, and the vertical lifting platform 42 of the vertical motion mechanism 4 is perpendicularly arranged to the base 31 of the horizontal motion mechanism 3. The vertical lifting platform 42 is stably set on the ground, and the vertical lifting platform 42, the horizontal motion mechanism 3, and the flexographic printing machine form a stable structure. The vertical lifting platform 42 is provided with vertical guide rails 41, and the two vertical guide rails 41 are arranged opposite to each other. The vertical drive device 43 on the vertical guide rails 41 can drive the horizontal motion mechanism 3 to move along the length direction of the vertical guide rails 41.

[0041] Furthermore, the vertical drive device 43 includes a rack and pinion drive pair 431 and a second servo motor 432 connected to the rack and pinion drive pair 431. The second servo motor 432 is used to drive the rack and pinion drive pair 431 to move. The rack and pinion drive pair 431 is connected to the second servo motor 432. The end of the rack and pinion drive pair 431 away from the vertical guide rail 41 is fixedly connected to the base 31. The rack and pinion drive pair 431 can move along the length direction of the vertical guide rail 41. The structure is convenient and the transmission is stable.

[0042] It should be noted that the first servo motor 332 and the second servo motor 432 are communicatively connected to the control system and are used to control the synchronous movement of the first servo motor 332 and the second servo motor 432. The transmission is stable, easy to control, and can achieve synchronous movement.

[0043] When started, the vertical motion mechanism 4 moves along the length of the horizontal motion mechanism 3 in the direction of moving closer to the flexographic printing press 101. After moving to the end of the gear rack 331, the horizontal guide rail 32 moves along the height of the vertical motion mechanism 4 to align with the position of the flexographic printing press where the printing roller needs to be replaced, and is precisely positioned.

[0044] After the plate changing roller is finished, the horizontal guide rail 32 moves in the height direction of the vertical motion mechanism 4 until it is on the same horizontal line as the gear rack 331, and the vertical motion mechanism 4 returns to its original position.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plate-changing mechanism for a satellite-type flexographic printing press, including the flexographic printing press (101), characterized in that: Also includes: A printing roller (1) is horizontally arranged along a first direction; a robotic arm (2) includes a mounting structure (21) and a connecting arm (22) fixedly connected to the mounting structure (21), the mounting structure (21) being fixedly connected to the rotation shaft (100) of the printing roller (1); a horizontal motion mechanism (3) is arranged along a second direction, the second direction being perpendicular to the first direction, the connecting arm (22) being slidably connected to the horizontal motion mechanism (3), and the robotic arm (2) is used to drive the printing roller (1) to achieve horizontal linear motion in the second direction; A vertical motion mechanism (4) is arranged along a third direction, which is perpendicular to the second direction. A horizontal motion mechanism (3) is slidably connected to the vertical motion mechanism (4) so ​​that the horizontal motion mechanism (3) can perform lifting and lowering movements in the third direction.

2. The plate-changing mechanism of the satellite-type flexographic printing machine according to claim 1, characterized in that, The mounting structure (21) includes a fixed part, a movable part, a sensing probe, a locking cylinder, and an air circuit control unit, wherein the air circuit control unit is connected to the control system. The fixed part is used to clamp the rotating shaft (100) of the printing roller (1); the movable part is connected to the fixed part and is used to adjust the clamping force of the fixed part; the movable part is fixedly connected to the rotating shaft (100) of the printing roller (1) and can slide radially along the rotating shaft (100) of the printing roller (1); the sensing probe is installed on the movable part; the locking cylinder is connected to the air circuit control unit and is linked to the movable part; the air circuit control unit controls the action of the locking cylinder so that the locking cylinder can drive the movable part to slide radially or lock the position of the movable part.

3. The plate-changing mechanism for a satellite-type flexographic printing press according to claim 1, characterized in that, The connecting arm (22) has an L-shaped structure and an arc-shaped transition.

4. The plate-changing mechanism for a satellite-type flexographic printing press according to claim 3, characterized in that, The horizontal motion mechanism (3) includes: a base (31); at least one set of horizontal guide rails (32) fixedly connected to the base (31); a horizontal slider (34), the connecting arm (22) fixedly connected to the horizontal slider (34), and the horizontal slider (34) slidably connected to the horizontal guide rails (32); and a horizontal drive device (33) for driving the horizontal slider (34) to move along the horizontal guide rails (32).

5. The plate-changing mechanism for a satellite-type flexographic printing press according to claim 4, characterized in that, The horizontal drive device (33) includes a rack and pinion (331) and a first servo motor (332). The rack and pinion (331) is connected to the base (31), and the base (31) is connected to the horizontal guide rail (32). The rack and pinion (331) are connected to the horizontal guide rail (32) and are connected to the first servo motor (332). The rack and pinion of the rack and pinion (331) are driven by the first servo motor (332), and the first servo motor (332) is fixedly installed on the base (31).

6. The plate-changing mechanism for a satellite-type flexographic printing press according to claim 5, characterized in that, The vertical motion mechanism (4) includes: at least one set of vertical guide rails (41); a vertical lifting platform (42), wherein the vertical guide rails (41) are fixedly installed in the vertical lifting platform (42) and are arranged along the height direction of the vertical lifting platform (42); and a vertical drive device (43) for driving the horizontal motion mechanism (3) to move along the vertical guide rails (41).

7. The plate-changing mechanism for a satellite-type flexographic printing press according to claim 6, characterized in that, The vertical drive device (43) includes a rack and pinion drive pair (431) and a second servo motor (432) connected to the rack and pinion drive pair (431). The second servo motor (432) is used to drive the rack and pinion drive pair (431) to move. The rack and pinion drive pair (431) is connected to the second servo motor (432). One end of the rack and pinion drive pair (431) away from the vertical guide rail (41) is fixedly connected to the base (31). The rack and pinion drive pair (431) can move along the length direction of the vertical guide rail (41).

8. The plate-changing mechanism for a satellite-type flexographic printing press according to claim 7, characterized in that, The first servo motor (332) and the second servo motor (432) are communicatively connected to the control system and are used to control the synchronous movement of the first servo motor (332) and the second servo motor (432).

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