Double-shaft servo laser positioning printing device integrated with PLC (Programmable Logic Controller) control

Abstract

The invention relates to the technical field of industrial automation control, and discloses an integrated PLC control double-shaft servo laser positioning printing device which comprises a workbench, a first shell fixedly connected to the top of the workbench, a control screen fixedly connected to the outer wall of the first shell, and a driving mechanism, each driving mechanism comprises a base fixedly connected to the inner wall of the first shell, a main body of each driving mechanism is divided into three parts, two driving mechanisms are located on the left side and the right side of the inner wall of the first shell, the remaining driving mechanism is arranged between the two driving mechanisms through a connecting assembly, and the printing assembly is connected to the driving mechanism located in the middle. According to the laser printing device, the driving mechanism is arranged, the double-shaft servo system is adopted in the X-axis direction and the Y-axis direction to conduct motion control on the printing head, and compared with a traditional laser printing device adopting a stepping motor, the precision grade can be effectively improved, and the printing time can be effectively shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation control, and particularly to a dual-axis servo laser positioning and printing device integrated with PLC control. Background Art

[0002] Laser printers evolved from laser phototypesetting technology in the late 1980s and became popular in the mid-1990s. It is a printing output device that combines laser scanning technology and electrophotographic technology. Its basic working principle is that binary data information transmitted from a computer is converted into a video signal by a video controller, and then the video signal is converted into a laser drive signal by a video interface / control system. Then, a laser beam carrying character information is generated by a laser scanning system, and finally, the laser beam is imaged and transferred onto paper by an electrophotographic system.

[0003] The patent application with the application number CN202222964282.X discloses a laser printing device convenient for positioning, including a base. An outer wall of the top of the base is provided with a printer body. A chute is opened on the outer wall of the top of the base. Two lower clamping blocks are slidably connected inside the chute. Two upper clamping blocks are connected to the outer wall of the bottom of the printer body by bolts. The lower clamping blocks are adapted to the upper clamping blocks. A double-threaded screw is connected between two inner walls of the chute through a bearing. The two lower clamping blocks are respectively connected to the two double-threaded screws by threads. One end of the double-threaded screw extends outside the base and is welded with a knob. By providing the double-threaded screw, the lower clamping blocks and the upper clamping blocks, the cooperation between the two lower clamping blocks and the upper clamping blocks is driven by the rotation of the double-threaded screw, so that the printer body can be conveniently fixed on the base, and thus the effect that the laser printer is convenient for positioning is achieved.

[0004] Traditional laser printing systems mostly adopt single-axis control or motion control schemes based on stepper motors. Such schemes have the problem of lacking a real-time feedback mechanism and cannot dynamically compensate for mechanical errors, resulting in the positioning accuracy being difficult to meet the high-precision printing requirements. Especially when dealing with complex graphic printing tasks, the path planning ability of the single-axis control system has significant limitations, and it is difficult to achieve high-precision motion control of typical trajectories such as straight lines and circles, which is not conducive to the printing needs of the device. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a dual-axis servo laser positioning and printing device integrated with PLC control to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A dual-axis servo laser positioning and printing device integrated with PLC control, including a workbench. An outer shell one is fixedly connected to the top of the workbench. A control screen is fixedly connected to the outer wall of the outer shell one. It further includes:

[0007] Drive mechanism, the drive mechanism includes a base fixedly connected to the inner wall of the first housing, the top of the base is fixedly connected with a moving device, the inner wall of which is movably connected with a connecting component, the top of the base is fixedly connected with a second housing, a second chute is provided on the inner wall of the second housing, a movable component is movably connected to the inner wall of the second chute, an auxiliary component is movably connected to the inner wall of the second housing, a first chute is provided on the outer wall of the base, a positioning roller is rotatably connected to the inner wall of the base through a bearing, a printing component is movably connected to the inner wall of the base, and an infrared rangefinder is fixedly connected to the inner wall of the second housing. The main body of the drive mechanism is divided into three parts. Two of the drive mechanisms are located on the left and right sides of the inner wall of the first housing, and the remaining one drive mechanism is arranged between the two drive mechanisms through a connecting component, and the printing component is connected to the drive mechanism in the middle. By setting the drive mechanism, a dual-axis servo system is used to control the movement of the print head in the X-axis and Y-axis directions. Compared with the traditional laser printing device using a stepper motor, the accuracy level can be effectively improved and the printing duration can be effectively shortened.

[0008] The hardware of the entire system is divided into PLC, frequency converter, touch screen, moving device and laser module. With the PLC as the core, the PLC generates pulse and direction signals according to program instructions, converts these signals into drive signals suitable for the moving device, and controls the start and stop of the moving device on the workbench. The device is connected to the computer through Ethernet and download cable to transmit data and programs in real time. Field devices such as laser heads and sensors are connected to the system through I / O ports to collect signals and automatically adjust the processing state (such as position compensation), thus forming a complete monitoring and control system.

[0009] According to the above technical solution, the movable component includes a slider, the outer wall of the slider is movably connected to the second chute, the top of the slider is fixedly connected with a T-shaped plate, a notch is provided on the outer wall of the T-shaped plate, a circular cable is fixedly connected to the inner wall of the T-shaped plate, and the inner wall of the second housing is movably connected to the circular cable. The specific position of the connecting component or the printing component is detected by the distance from the infrared rangefinder to the notch. By setting the movable component, the infrared rangefinder can be used to quickly detect the specific position of the device in the X-axis and Y-axis directions, enabling the device to quickly achieve real-time feedback based on the detected values, facilitating the device to perform real-time compensation for moving deviations. At the same time, the infrared detection device is integrated inside the device, and this design can further avoid the interference of detection data by the external environment and prevent the influence of external factors on the detection data, thereby ensuring the effectiveness of the device compensation mechanism.

[0010] According to the above technical solution, the connection component includes a first sliding ring. A first counterweight column is fixedly connected to the inner wall of the first sliding ring. A first connecting plate is fixedly connected to the bottom of the first sliding ring. A U-shaped plate is fixedly connected to the side of the first sliding ring away from the first counterweight column. The inner wall of the U-shaped plate is fixedly connected to the base. The position of the connection component is controlled by the moving devices on both sides, thereby changing the position of the driving mechanism located in the middle.

[0011] According to the above technical solution, the printing component includes a second sliding ring. A print head is fixedly connected to the inner wall of the second sliding ring. A second connecting plate is fixedly connected to the bottom of the second sliding ring. A second counterweight column is fixedly connected to the side of the second sliding ring away from the print head. The moving device located in the middle controls the displacement of the printing component, thereby playing a role in controlling the position of the print head. The first counterweight column and the second counterweight column in the device are used to balance the weights on both sides of the first sliding ring or the second sliding ring, avoiding the influence on their movement accuracy caused by the unbalanced weights on both sides of the first sliding ring or the second sliding ring.

[0012] According to the above technical solution, the inner wall of the second connecting plate is fixedly connected to the annular cable, and the inner wall of the first connecting plate is fixedly connected to the annular cable. The movement of the connection component or the printing component can change the position of the T-shaped plate through the annular cable.

[0013] According to the above technical solution, the auxiliary component includes a hollow column. The outer wall of the hollow column is movably connected to the second housing. A spring is sleeved on the outer wall of the hollow column. One end of the spring is fixedly connected to the hollow column, and the end of the spring away from the hollow column is fixedly connected to the second housing. A ball is rotatably connected to the inner wall of the spring. The spring is sleeved on the outer wall of the annular cable. The ball is used to relieve the friction between the annular cable and the hollow column. By setting the auxiliary component, the friction between the annular cable and the second housing during the driving process of the annular cable by the device can be reduced. The reduction of this friction can, on the one hand, avoid damage to the surface of the annular cable due to friction, thereby preventing the influence on the service life of the device; on the other hand, the reduction of friction can reduce the vibration generated when the annular cable moves, thereby avoiding the deviation of the T-shaped plate or the interference of the infrared rangefinder caused by vibration, and ensuring the effectiveness of the device feedback mechanism.

[0014] According to the above technical solution, a bracket is fixedly connected to the inner wall of the base. A roller is rotatably connected to the inner wall of the bracket through a bearing. The annular cable is sleeved on the outer wall of the roller. The rollers are arranged at the front and rear ends inside the base and are used to limit the movement range of the annular cable.

[0015] According to the above technical solution, an elastic component is fixedly connected to the outer wall of the base. A circular plate is fixedly connected to the bottom of the elastic component. A pressure roller is rotatably connected to one side of the circular plate close to the circular plate through a bearing. The inner wall of the first chute is movably connected to the pressure roller. The elastic component gives the pressure roller an upward moving force, driving the pressure roller to apply pressure to the annular cable. By setting a driving mechanism, a preset pressure can be applied to the annular cable, avoiding errors or delays in the movement of the T-shaped plate caused by the slack of the annular cable, thereby affecting the rapid detection and feedback compensation process of the device and preventing the reduction of the printing accuracy of the device.

[0016] Compared with the prior art, the present invention provides a dual-axis servo laser positioning printing device integrated with PLC control, having the following beneficial effects:

[0017] 1. By setting a driving mechanism, the present invention implements motion control of the print head in the X-axis and Y-axis directions using a dual-axis servo system. Compared with traditional laser printing devices using stepping motors, it can effectively improve the accuracy level and effectively shorten the printing duration.

[0018] 2. By setting an active component, the present invention can quickly detect the specific positions of the device in the X-axis and Y-axis directions using an infrared rangefinder, enabling the device to quickly achieve real-time feedback based on the detected values, facilitating real-time compensation of the movement deviation of the device. At the same time, integrating the infrared detection device inside the device can further avoid interference of the detection data by the external environment and prevent the detection data from being affected by external factors, thereby ensuring the effectiveness of the compensation mechanism of the device.

[0019] 3. By setting a driving mechanism, the present invention can apply a preset pressure to the annular cable, avoiding errors or delays in the movement of the T-shaped plate caused by the slack of the annular cable, thereby affecting the rapid detection and feedback compensation process of the device and preventing the reduction of the printing accuracy of the device.

[0020] 4. By setting an auxiliary component, the present invention can reduce the friction between the annular cable and the second housing during the process of the device driving the annular cable. The reduction of this friction can, on the one hand, avoid damage to the surface of the annular cable due to friction, thereby preventing the impact on the service life of the device; on the other hand, the reduction of friction can reduce the vibration generated when the annular cable moves, thereby avoiding the deviation of the T-shaped plate or interference with the infrared rangefinder caused by vibration and ensuring the effectiveness of the feedback mechanism of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is the overall structural sectional view of the present invention;

[0024] Figure 3 is the schematic diagram of the drive mechanism of the present invention Figure 1 ;

[0025] Figure 4 is the schematic diagram of the drive mechanism of the present invention Figure 2 ;

[0026] Figure 5 is the sectional view of the drive mechanism of the present invention Figure 1 ;

[0027] Figure 6 is of the present invention Figure 5 the enlarged view of A in;

[0028] Figure 7 is the sectional view of the drive mechanism of the present invention Figure 2 ;

[0029] Figure 8 is the schematic diagram of the movable component of the present invention;

[0030] Figure 9 is the schematic diagram of the auxiliary component of the present invention;

[0031] Figure 10 is the schematic diagram of the connection component of the present invention;

[0032] Figure 11 is the schematic diagram of the printing component of the present invention.

[0033] In the figure: 1, workbench; 101, outer shell one; 102, control screen; 2, drive mechanism; 201, base; 202, moving device; 203, outer shell two; 204, chute one; 205, chute two; 206, positioning roller; 207, bracket; 208, roller; 209, pressure roller; 2010, circular plate; 2011, elastic component; 2012, infrared rangefinder; 21, connection component; 211, sliding ring one; 212, connecting plate one; 213, counterweight column one; 214, U-shaped plate; 22, printing component; 221, sliding ring two; 222, connecting plate two; 223, print head; 224, counterweight column two; 23, movable component; 231, annular cable; 232, T-shaped plate; 233, notch; 234, slider; 24, auxiliary component; 241, hollow column; 242, spring; 243, ball. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example 1: See Figures 1 - 7 The present invention provides a technical solution: a dual-axis servo laser positioning printing device with integrated PLC control, comprising a workbench 1, a housing 101 is fixedly connected to the top of the workbench 1, a control screen 102 is fixedly connected to the outer wall of the housing 101, and further comprising:

[0038] Drive mechanism 2, the drive mechanism 2 includes a base 201 fixedly connected to the inner wall of the first housing 101. A moving device 202 is fixedly connected to the top of the base 201. A connecting component 21 is movably connected to the inner wall of the moving device 202. A second housing 203 is fixedly connected to the top of the base 201. A second chute 205 is provided on the inner wall of the second housing 203. An active component 23 is movably connected to the inner wall of the second chute 205. An auxiliary component 24 is movably connected to the inner wall of the second housing 203. A first chute 204 is provided on the outer wall of the base 201. A positioning roller 206 is rotatably connected to the inner wall of the base 201 through a bearing. A printing component 22 is movably connected to the inner wall of the base 201. An infrared rangefinder 2012 is fixedly connected to the inner wall of the second housing 203. The main body of the drive mechanism 2 is divided into three parts. Two of the drive mechanisms 2 are located on the left and right sides of the inner wall of the first housing 101. The remaining one drive mechanism 2 is arranged between the two drive mechanisms 2 through the connecting component 21. And the printing component 22 is connected to the drive mechanism 2 in the middle. A bracket 207 is fixedly connected to the inner wall of the base 201. A roller 208 is rotatably connected to the inner wall of the bracket 207 through a bearing. An annular cable 231 is sleeved on the outer wall of the roller 208. The roller 208 is arranged at the front and rear ends inside the base 201 to limit the moving range of the annular cable 231. An elastic component 2011 is fixedly connected to the outer wall of the base 201. A circular plate 2010 is fixedly connected to the bottom of the elastic component 2011. A pressure roller 209 is rotatably connected to one side of the circular plate 2010 close to the circular plate 2010 through a bearing. The inner wall of the first chute 204 is movably connected to the pressure roller 209. When the device is working, the moving device 202 controls the position of the connecting component 21 on the Y-axis. As the connecting component 21 moves, the drive mechanism 2 inside the connecting component 21 also moves. And the drive mechanism 2 inside the connecting component 21 controls the position of the printing component 22 on the X-axis through the moving device 202, playing a role in the dual-axis control of the device. At the same time, the infrared rangefinder 2012 is used to detect the position of the active component 23 inside the second housing 203 to detect the specific position of the device after displacement, facilitating the device to perform feedback compensation.

[0039] Embodiment 2: Please refer to Figures 8 - 11 , on the basis of Embodiment 1, the present invention provides a technical solution: The connecting component 21 includes a first sliding ring 211. A first counterweight column 213 is fixedly connected to the inner wall of the first sliding ring 211. A first connecting plate 212 is fixedly connected to the bottom of the first sliding ring 211. A U-shaped plate 214 is fixedly connected to one side of the first sliding ring 211 away from the first counterweight column 213. The inner wall of the U-shaped plate 214 is fixedly connected to the base 201. When the device is working, the first sliding ring 211 is driven to move by the moving device 202. The movement of the first sliding ring 211 drives the printing component 22 to displace through the U-shaped plate 214.

[0040] The printing component 22 includes a second slip ring 221. The inner wall of the second slip ring 221 is fixedly connected to a print head 223. The bottom of the second slip ring 221 is fixedly connected to a second connecting plate 222. One side of the second slip ring 221 away from the print head 223 is fixedly connected to a second counterweight column 224. The moving device 202 in the middle controls the displacement of the printing component 22, thereby controlling the position of the print head 223. The inner wall of the second connecting plate 222 is fixedly connected to an annular cable 231, and the inner wall of the first connecting plate 212 is fixedly connected to the annular cable 231. The movement of the connecting component 21 or the printing component 22 can change the position of the T-shaped plate 232 through the annular cable 231. When the device is working, the position of the second slip ring 221 is controlled by the moving device 202. The displacement of the second slip ring 221 will drive the print head 223 to move. After the coordinated movement of the connecting component 21 and the printing component 22, the print head 223 can be controlled in two axes.

[0041] The movable component 23 includes a slider 234. The outer wall of the slider 234 is movably connected to a second chute 205. The top of the slider 234 is fixedly connected to a T-shaped plate 232. A notch 233 is formed in the outer wall of the T-shaped plate 232. The inner wall of the T-shaped plate 232 is fixedly connected to an annular cable 231. The inner wall of the second housing 203 is movably connected to the annular cable 231. When the first connecting plate 212 or the second connecting plate 222 moves, it will drive the annular cable 231 to move. The moving annular cable 231 will drive the position of the T-shaped plate 232 in the second housing 203 to move. Through the position of the T-shaped plate 232, the device can detect the specific positions of the print head 223 on the X-axis and Y-axis through the infrared rangefinder 2012.

[0042] The auxiliary component 24 includes a hollow column 241. The outer wall of the hollow column 241 is movably connected to the second housing 203. A spring 242 is sleeved on the outer wall of the hollow column 241. One end of the spring 242 is fixedly connected to the hollow column 241, and the end of the spring 242 away from the hollow column 241 is fixedly connected to the second housing 203. A ball 243 is rotatably connected to the inner wall of the spring 242. The spring 242 is sleeved on the outer wall of the annular cable 231. The ball 243 is used to relieve the friction between the annular cable 231 and the hollow column 241.

[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0044] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dual-axis servo laser positioning printing device with integrated PLC control, comprising a workbench (1), the top of the workbench (1) is fixedly connected to a housing 1 (101), and the outer wall of the housing 1 (101) is fixedly connected to a control screen (102), characterized in that: Also includes: The driving mechanism (2) comprises a base (201) fixedly connected to the inner wall of the first shell (101), the top of the base (201) is fixedly connected to the inner wall of the moving device (202) and is movably connected to the connecting component (21), the top of the base (201) is fixedly connected to the second shell (203), the inner wall of the second shell (203) is provided with a second slide groove (205), the inner wall of the second slide groove (205) is movably connected to the movable component (23), the inner wall of the second shell (203) is movably connected to the auxiliary component (24), and the outer wall of the base (201) is provided with The invention discloses a sliding groove (204), wherein the inner wall of the base (201) is rotatably connected to a positioning roller (206) via a bearing, the inner wall of the base (201) is movably connected to a printing assembly (22), and the inner wall of the second shell (203) is fixedly connected to an infrared rangefinder (2012), wherein the main body of the driving mechanism (2) is divided into three parts, wherein two driving mechanisms (2) are located on the left and right sides of the inner wall of the first shell (101), and the remaining driving mechanism (2) is arranged between the two driving mechanisms (2) via a connecting assembly (21), and the printing assembly (22) is connected to the driving mechanism (2) located in the middle.

2. According to claim 1, a dual-axis servo laser positioning printing device with integrated PLC control, characterized in that: The movable component (23) comprises a slider (234), the outer wall of which is movably connected to the second slide groove (205), the top of which is fixedly connected to a T-shaped plate (232), the outer wall of which is provided with a notch (233), the inner wall of which is fixedly connected to a ring cable (231), the inner wall of which is movably connected to the second housing (203), and the specific position of the connecting component (21) or the printing component (22) is detected by measuring the distance from the infrared rangefinder (2012) to the notch (233).

3. The dual-axis servo laser positioning printing device with integrated PLC control according to claim 2, characterized in that: The connection assembly (21) comprises a sliding ring (211), the inner wall of which is fixedly connected to a counterweight column (213), the bottom of which is fixedly connected to a connecting plate (212), a side of the sliding ring (211) away from the counterweight column (213) is fixedly connected to a U-shaped plate (214), the inner wall of the U-shaped plate (214) is fixedly connected to a base (201), and the position of the connection assembly (21) is controlled by moving devices (202) on both sides, thereby changing the position of a driving mechanism (2) located in the middle.

4. The dual-axis servo laser positioning printing device with integrated PLC control according to claim 3 is characterized in that: The printing assembly (22) comprises a second sliding ring (221), the inner wall of the second sliding ring (221) is fixedly connected to a printing head (223), the bottom of the second sliding ring (221) is fixedly connected to a second connecting plate (222), a side of the second sliding ring (221) away from the printing head (223) is fixedly connected to a second counterweight column (224), and a moving device (202) located in the middle controls the displacement of the printing assembly (22), thereby controlling the position of the printing head (223).

5. The dual-axis servo laser positioning printing device with integrated PLC control according to claim 4 is characterized in that: The inner wall of the second connecting plate (222) is fixedly connected to the annular cable (231), and the inner wall of the first connecting plate (212) is fixedly connected to the annular cable (231). The movement of the connecting component (21) or the printing component (22) can change the position of the T-plate (232) through the annular cable (231).

6. The dual-axis servo laser positioning printing device with integrated PLC control according to claim 5, characterized in that: The auxiliary component (24) comprises a hollow column (241), the outer wall of the hollow column (241) is movably connected to the second outer shell (203), the outer wall of the hollow column (241) is sleeved with a spring (242), one end of the spring (242) is fixedly connected to the hollow column (241), one end of the spring (242) away from the hollow column (241) is fixedly connected to the second outer shell (203), the inner wall of the spring (242) is rotatably connected with a ball (243), the spring (242) is sleeved on the outer wall of the annular cable (231), and the ball (243) is used to alleviate the friction between the annular cable (231) and the hollow column (241).

7. The dual-axis servo laser positioning printing device with integrated PLC control according to claim 6, characterized in that: The inner wall of the base (201) is fixedly connected to a bracket (207), and the inner wall of the bracket (207) is rotatably connected to a roller (208) via a bearing. The annular cable (231) is sleeved on the outer wall of the roller (208), and the roller (208) is arranged at the front and rear ends inside the base (201) to limit the movement range of the annular cable (231).

8. The dual-axis servo laser positioning printing device with integrated PLC control according to claim 7, characterized in that: The outer wall of the base (201) is fixedly connected to an elastic component (2011), the bottom of the elastic component (2011) is fixedly connected to a circular plate (2010), and the side of the circular plate (2010) close to the circular plate (2010) is rotatably connected to a pressure roller (209) via a bearing, and the inner wall of the slide groove (204) is movably connected to the pressure roller (209), and the elastic component (2011) provides a force for the pressure roller (209) to move upward, thereby driving the pressure roller (209) to apply pressure to the annular cable (231).

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