A conveying platform and a printing press

Abstract

This invention relates to the field of printing press technology, specifically disclosing a conveying platform and a printing press. The conveying platform includes: a support platform; a conveying assembly surrounding the outer periphery of the support platform along a first direction, the conveying assembly including a magnetic suction element surrounding the outer periphery of the support platform along the first direction; a driving assembly including a driving unit and a first electromagnet for attracting the magnetic suction element, the driving unit being mounted on the support platform, and the output end of the driving unit being connected to the first electromagnet to drive the first electromagnet to reciprocate along the first direction; and a second electromagnet being mounted on the support platform, and the second electromagnet being disposed between the magnetic suction element and the support platform for attracting and fixing the conveying assembly. The conveying platform and printing press of this invention use a linear drive to move the conveying assembly around the support platform, ensuring accurate and continuous conveying of the printing substrate.

Description

Technical Field

[0001] This invention relates to the field of printing press technology, and in particular to a conveyor platform and a printing press. Background Technology

[0002] The conveyor platform, also known as the paper feed system, feeder, or paper conveyor, is used to transport the printing substrate to the printing unit.

[0003] Existing conveying platforms, such as Chinese Invention Patent Publication No. CN107297958A, disclose a continuous printing color printing machine, which includes a conveying device. The conveying device mainly includes a pair of first conveying chains and a pair of second conveying chains, and corresponding transmission first main sprocket, first driven sprocket and second main sprocket, and second driven sprocket. The first conveying chain is located outside the second conveying chain, and the upper and lower conveying surfaces of the two are flush. The first main sprocket and the second main sprocket are coaxially connected to an external main motor. The outer chain surfaces of the first conveying chain and the second conveying chain are provided with evenly distributed chain plates.

[0004] It can be seen that the driving method of this conveying device is as follows: main motor rotates → first main sprocket and second main sprocket rotate → first conveyor chain and second conveyor chain move → chain plate moves. This conveying device uses a motor rotation drive to move the chain plate. Through the cooperation of the sprocket and chain, there is a gap between them, which accumulates errors during transmission, thus affecting the accuracy of the conveying. Furthermore, if a linear drive is used to drive the chain plate, the chain plate can only move in a reciprocating linear motion, causing discontinuity in the conveying process. Summary of the Invention

[0005] The purpose of this invention is to provide a conveying platform and a printing press that uses a linear drive to move the conveying components around a support platform, ensuring accurate and continuous conveying of the printing substrate.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a conveying platform, comprising: Support platform; A conveying assembly is disposed around the outer periphery of the support platform along a first direction. The conveying assembly includes a magnetic suction element that is disposed around the outer periphery of the support platform along the first direction. A driving assembly includes a driving unit and a first electromagnet for attracting the magnetic component. The driving unit is mounted on the support platform, and its output is connected to the first electromagnet to drive the first electromagnet to reciprocate along a first direction. A second electromagnet is mounted on the support platform and is positioned between the magnetic attractor and the support platform to attract and fix the conveying assembly.

[0007] In some embodiments, the conveying platform further includes a first guide rail, which is fixed to the support platform and extends along the first direction, and the conveying assembly is slidably connected to the first guide rail.

[0008] In some embodiments, the first guide rail includes at least two, and the at least two first guide rails are arranged along a second direction, which is perpendicular to the first direction.

[0009] In some embodiments, the conveying assembly further includes a plurality of conveying units that are hinged end to end and arranged around the outer periphery of the support platform along the first direction, the magnetic suction member is fixed to the conveying unit, and at least one of the conveying units is slidably connected to the first guide rail.

[0010] In some embodiments, the conveying unit includes a first slider, a chain link, a chain plate, and a hinge. The first slider is slidably connected to the first guide rail, the chain link is connected to the first slider, the magnetic suction member is fixed to the chain link, the chain plate is connected to the magnetic suction member, and the chain links of two adjacent conveying units are connected by a hinge, the hinge extending along the second direction.

[0011] In some embodiments, the conveying platform further includes a support plate, the two ends of the support platform along the first direction are respectively connected to the support plate, the opposite sides of the two support plates are formed with arc surfaces, and the arc surface of one support plate abuts against the hinge of at least one of the conveying units.

[0012] In some embodiments, the driving unit includes a driving element, which is a linear motor, including a stator and a mover. The stator is connected to the support platform, and the mover is disposed on the side of the stator away from the support platform. The first electromagnet is connected to the side of the mover away from the stator.

[0013] In some embodiments, the driving unit includes a driving member, a lead screw, a nut, and a bearing housing. The driving member and the bearing housing are connected to the support platform. The lead screw is connected to the output end of the driving member and is rotatably connected to the bearing housing. The nut is threadedly connected to the lead screw and is used to drive the first electromagnet to reciprocate along a first direction.

[0014] In some embodiments, the drive unit further includes a first pulley, a transmission belt, and a second pulley. The drive component is a rotary motor. The first pulley is connected to the output end of the drive component, and the second pulley is connected to one end of the lead screw. The first pulley and the second pulley are connected by the transmission belt.

[0015] In some embodiments, the drive unit further includes a tension wheel, a motor bracket, and a fixing member. The tension wheel is rotatably connected to the support platform, the transmission belt is wound around the tension wheel, the motor bracket has a strip-shaped through hole, the fixing member passes through the strip-shaped through hole to fix the motor bracket to the support platform, and the drive member is connected to the motor bracket.

[0016] In some embodiments, the conveying platform further includes a second guide rail and a second slider extending along the first direction, the second guide rail being fixed to the support platform, the first electromagnet being mounted on the second slider, and the driving member being used to drive the second slider to reciprocate along the second guide rail.

[0017] In some embodiments, the conveying platform further includes a first elastic plate, which is installed between the second slider and the first electromagnet, and the first electromagnet and the magnetic attractor are spaced apart.

[0018] In some embodiments, the conveying platform further includes a non-magnetic plate, which is mounted between the first elastic plate and the second slider.

[0019] In some embodiments, the conveying platform further includes a base and a second elastic plate. The base is connected to the support platform, the second elastic plate is connected to a side of the base away from the support platform, and a second electromagnet is connected to a side of the second elastic plate away from the base. The second electromagnet and the magnetic attractor are spaced apart.

[0020] In some embodiments, the conveying platform further includes a position sensor disposed on the support platform, the position sensor being used to detect the position of the first electromagnet.

[0021] To achieve the above objectives, in a second aspect, the present invention provides a printing press including the conveying platform described in the first aspect, the conveying platform being used to convey a substrate.

[0022] This invention provides a conveying platform and a printing machine, which have the following advantages compared with the prior art: The conveying assembly of the present invention includes a magnetic suction element, which is arranged around the outer periphery of the support platform along a first direction. The driving assembly includes a driving unit and a first electromagnet for attracting the magnetic suction element. The output end of the driving unit is connected to the first electromagnet to drive the first electromagnet to reciprocate along the first direction. A second electromagnet is disposed between the magnetic suction element and the support platform for attracting and fixing the conveying assembly.

[0023] When the conveying assembly is driven, the first electromagnet is energized and the second electromagnet is de-energized. The drive unit drives the conveying assembly to rotate around the support platform along the first direction by attracting the magnetic attachment through the first electromagnet. Then, the first electromagnet is de-energized and the second electromagnet is energized. The drive unit drives the first electromagnet to reset, and at the same time, the second electromagnet attracts the magnetic attachment to fix the conveying assembly, preventing the conveying assembly from moving relative to the support platform. In this way, the movement and reset of the first electromagnet driven by the drive unit are cycled to ensure the continuous movement of the conveying assembly around the support platform along the first direction. At the same time, during the reset of the first electromagnet, the second electromagnet fixes the conveying assembly, keeping the position of the conveying assembly relative to the support platform stable. This ensures the positioning accuracy of the conveying assembly when the substrate is moved to different positions and the reliability of the relative position of the substrate with respect to the printing unit during printing. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a conveying platform provided for some embodiments of the present invention.

[0025] Figure 2 This is a front view structural diagram of a conveying platform provided for some embodiments of the present invention.

[0026] Figure 3 This is an enlarged structural diagram of two adjacent conveying units of a conveying platform provided in some embodiments of the present invention.

[0027] Figure 4 This is a three-dimensional structural diagram of a removal conveying unit of a conveying platform provided in the first embodiment of the present invention.

[0028] Figure 5 for Figure 4 A three-dimensional magnified schematic diagram of the driving component.

[0029] Figure 6 for Figure 4 A top-down magnified structural diagram of the drive component.

[0030] Figure 7 This is a second three-dimensional structural diagram of a removal conveying unit of a conveying platform provided in the second embodiment of the present invention.

[0031] Figure 8 for Figure 7 A three-dimensional magnified schematic diagram of the driving component.

[0032] Figure 9 for Figure 7 A magnified side view of the drive component.

[0033] Figure 10This is an enlarged schematic diagram of the second electromagnet installation structure of a conveying platform provided in some embodiments of the present invention.

[0034] In the picture: 100. Conveying platform; 1. Support platform; 2. First guide rail; 3. Conveying assembly; 31. Conveying unit; 311. Magnetic suction element; 312. First slider; 313. Chain link; 314. Chain plate; 315. Hinge; 4. Drive assembly; 41. Drive unit; 411. Drive element; 4111. Stator; 4112. Rotor; 412. Lead screw; 413. Nut; 414. Bearing seat; 415. First pulley; 416. Transmission belt; 417. Second pulley; 418. Tensioner; 419. Motor bracket; 4191. Strip-shaped through hole; 410. Fixing element; 42. First electromagnet; 5. Second electromagnet; 6. Second guide rail; 7. Second slider; 8. Non-magnetic plate; 9. First elastic plate; 10. Base; 11. Second elastic plate; 12. Position sensor; 13. Support plate; x, first direction; y, second direction. Detailed Implementation

[0035] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0036] It should be understood that in the description of this application, the terms "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. That is, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, unless otherwise stated, "a plurality of" means two or more.

[0037] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figure 1 and Figure 4As shown, the first direction x intersects perpendicularly with the second direction y. This embodiment of the invention provides a conveying platform 100, including a support platform 1, a conveying assembly 3, a driving assembly 4, and a second electromagnet 5. The conveying assembly 3 is wound around the outer periphery of the support platform 1 along the first direction x. The conveying assembly 3 includes a magnetic suction element 311, which is wound around the outer periphery of the support platform 1 along the first direction x. The driving assembly 4 includes a driving unit 41 and a first electromagnet 42 for attracting the magnetic suction element 311. The driving unit 41 is mounted on the support platform 1, and its output end is connected to the first electromagnet 42 to drive the first electromagnet 42 to reciprocate along the first direction x. The second electromagnet 5 is mounted on the support platform 1 and is positioned between the magnetic suction element 311 and the support platform 1 to attract and fix the conveying assembly 3.

[0039] When the conveying platform 100 is in operation, the substrate is placed on the conveying assembly 3. First, the first electromagnet 42 is energized and the second electromagnet 5 is de-energized. The drive unit 41 drives the first electromagnet 42 to move along the first direction x. The first electromagnet 42 attracts the magnetic suction component 311 and drives the magnetic suction component 311 to move along the first direction x, thereby causing the conveying assembly 3 to rotate around the support platform 1 along the first direction x. Then, the first electromagnet 42 is de-energized and the second electromagnet 5 is energized. The drive unit 41 drives the first electromagnet 42 to reset. At the same time, the second electromagnet 5 attracts the magnetic suction component 311 to fix the conveying assembly 3 and prevent the conveying assembly 3 from moving relative to the support platform 1. The first electromagnet 42 is driven by the drive unit 41 to move and reset in a cycle, ensuring that the conveying component 3 moves continuously around the support platform 1 along the first direction x. At the same time, during the reset process of the first electromagnet 42, the second electromagnet 5 fixes the conveying component 3, keeping the position of the conveying component 3 relative to the support platform 1 stable. This ensures the positioning accuracy of the conveying component 3 when it moves to different positions and the reliability of the relative position of the substrate to the printing unit during printing.

[0040] Compared to existing technologies that use a motor to drive a sprocket to rotate, driving the chain and chain plates to move continuously, the accuracy of this method is affected by multiple factors such as chain pitch, sprocket backlash, and reducer backlash, easily leading to accumulated errors and making it difficult to achieve high-precision fixed-point stopping. This invention, in this embodiment, uses a drive unit 41 to drive a first electromagnet 42 for precise linear displacement. The distance of each movement is directly controlled by the drive unit 41, and combined with the fixing effect of the second electromagnet 5 attracting the magnetic attractor 311, a move-lock stepping mode is achieved. This results in precise positioning without accumulated errors and meets the requirements of continuous conveying.

[0041] like Figure 4 and Figure 7As shown, in some embodiments, the conveying platform 100 further includes a first guide rail 2, which is fixed to the support platform 1 and extends along a first direction x. The conveying assembly 3 is slidably connected to the first guide rail 2. When the conveying assembly 3 moves, the first electromagnet 42 provides attraction and tension to the magnetic attractor 311, which is insufficient to constrain the sway of the conveying assembly 3 along the second direction y. By restricting the conveying assembly 3 to linear movement only along the first direction x, the first guide rail 2 eliminates other unnecessary degrees of freedom, enabling the conveying assembly 3 to move the substrate stably along the first direction x. Furthermore, even if the conveying assembly 3 itself undergoes slight deformation due to hinges or loads, its movement trajectory can be limited by the extension direction of the first guide rail 2, thereby ensuring the long-term stability and repeatability of the conveying accuracy and further improving the movement accuracy of the conveying assembly 3.

[0042] like Figure 4 and Figure 7 As shown, specifically, the first guide rail 2 includes at least two, and the at least two first guide rails 2 are arranged along the second direction y. In this way, arranging at least two first guide rails 2 along the second direction y can provide more than two support points for the conveying assembly 3, forming a stable support plane, which can effectively resist overturning moment and ensure that the conveying assembly 3 remains horizontal and stable in both running and stationary states along the first direction x.

[0043] like Figure 2 and Figure 3 As shown, in some embodiments, the conveying assembly 3 further includes multiple conveying units 31 that are hinged end-to-end and arranged around the support platform 1 along the first direction x. Magnetic suction elements 311 are fixed to the conveying units 31, and at least one conveying unit 31 is slidably connected to the first guide rail 2. The hinged structure of the multiple conveying units 31 allows the conveying assembly 3 to bend flexibly and adapt to the outer contour of the support platform 1, forming a closed-loop structure arranged around the outer periphery of the support platform 1, realizing continuous cyclic conveying. Each conveying unit 31 is fixed with a magnetic suction element 311, which is connected one-to-one to the multiple hinged conveying units 31. The magnetic suction elements 311 are arranged around the support platform 1 along the first direction x, so that the point of application of the driving force by the first electromagnet 43 is discretized and regularly distributed on the entire annular conveying assembly 3. Each time the first electromagnet 42 moves, it attracts and pulls one or more conveying units 31 that are facing it at that time, realizing stepless movement of the substrate and improving the accuracy of the printing position of the substrate.

[0044] Specifically, since each conveying unit 31 is equipped with a magnetic attractor 311, when the first electromagnet 42 moves along the first direction x and remains energized, it can sequentially attract and pull the corresponding conveying unit 31. When the first electromagnet 42 is de-energized and resets, the second electromagnet 5 is energized, attracting the corresponding conveying unit 31 and temporarily locking the position of the conveying unit 31 relative to the support platform 1. This completes the drive cycle of attraction-pulling-release-reset. In this way, the connection structure between the entire conveying assembly 3 and the drive assembly 4 is simplified to magnetic coupling. Complex mechanical transmissions such as gears or sprockets are eliminated, reducing assembly precision requirements and avoiding wear and meshing noise.

[0045] Furthermore, at least one conveying unit 31 is slidably connected to the first guide rail 2, which is crucial to ensuring that the conveying assembly 3 can operate smoothly and accurately along the first direction x. The first guide rail 2 provides a track for the conveying assembly 3 to move in the first direction x, preventing the conveying assembly 3 from deviating from the first direction x during operation and ensuring that it moves along the predetermined first direction x. The slidable connection on the first guide rail 2 reduces friction and resistance. In some embodiments, the first guide rail 2 does not need to correspond to all conveying units 31. Preferably, the first guide rail 2 can satisfy the guiding and supporting functions of the conveying assembly 3 simply by being mounted on the upper surface of the support platform 1, which simplifies the structure and reduces costs. It is understood that compared to the conveying assembly 3 sliding directly on the support platform 1, the more conveying units 31 corresponding to the first guide rail 2, the lower the resistance and friction of the conveying assembly 3, and the higher its stability.

[0046] like Figure 3 As shown, in this embodiment, specifically, the conveying unit 31 includes a first slider 312, a chain link 313, a chain plate 314, and a hinge 315. The first slider 312 is slidably connected to the first guide rail 2. The chain link 313 is connected to the side of the first slider 312 opposite to the first guide rail 2. A magnetic suction member 311 is fixed to the side of the chain link 313 opposite to the first slider 312. The chain plate 314 is connected to the side of the magnetic suction member 311 opposite to the chain link 313. The chain links 313 of two adjacent conveying units 31 are connected by the hinge 315, which extends along the second direction y. In this way, the first slider 312 slides on the first guide rail 2, ensuring its linearity of movement. After wear, only the first slider 312 needs to be replaced, without replacing the chain link 313 and the chain plate 314. The chain link 313 is connected by the hinge 315, allowing the conveying unit 31 to flexibly bend around the support platform 1 and form a closed-loop structure around the support platform 1, ensuring the stability of the movement of the printed material during circulation. Among them, the chain plate 314 is used to directly support the printed material.

[0047] In this embodiment, the first electromagnet 42 can drive the magnetic attractor 311 to move along the first direction x. At this time, the chain link 313 drives the adjacent chain link 313 to move through the hinge 315, while the first slider 312 slides on the first guide rail 2. In this way, linear drive is achieved by the first electromagnet 42 attracting the magnetic attractor 311, and the cooperation between the first slider 312 and the first guide rail 2 improves the accuracy and reliability of the movement.

[0048] In another embodiment, the chain links 313, chain plates 314 and hinges 315 of each conveying unit 31 are replaced with a conveyor belt surrounding the support platform 1. In this case, the first slider 312 and the magnetic suction member 311 are fixed to the side of the conveyor belt near the support platform 1. This structure can also ensure that the conveying assembly 3 works normally.

[0049] It should be noted that the substrates for printing include paper, plastic packaging, metal, ceramics, electronic components, and fabrics, etc. The specific structure of the conveyor assembly 3 can be selected according to the weight of the substrate. If the substrate is heavy, the conveyor assembly 3 adopts chain links 313, chain plates 314, and hinges 315; if the substrate is light, the conveyor assembly 3 can adopt a conveyor belt structure.

[0050] like Figure 2 and Figure 3 As shown, in this embodiment, the conveying platform 100 further includes a support plate 13, which is connected to both ends of the support platform 1 along the first direction x. The side of the support plate 13 facing away from the support platform 1 has an arc surface 131. The hinge 315 of the conveying unit 31 abuts against the arc surface 131. The hinge 315 extends along the second direction y, protruding from the side of the link 313, so that the outer periphery of the hinge 315 has sufficient length to abut against the arc surface 131. The conveying unit 31 is guided and supported by the first slider 312 and the first guide rail 2. When the conveying unit 31 runs to the end of the support platform 1 (i.e., where a turn is needed), the first slider 312 is about to disengage from the first guide rail 2. At this time, the arc surface 131 provides continuous support and constraint for the hinge 315 entering the turn. The radius of curvature of the arc surface 131 determines the turning radius of the conveying assembly 3. The hinge 315 abuts against and slides along the arc surface 131, allowing the chain link 313 to rotate around the center of the arc surface 131, ensuring the consistency of the trajectory of each conveying unit 31 at the turning point.

[0051] The conveying platform 100 provided in this embodiment of the invention includes two driving methods, which are described in detail in the first and second embodiments below.

[0052] like Figures 4-6As shown, in the first embodiment, the drive unit 41 includes a drive member 411, a lead screw 412, a nut 413, and a bearing seat 414. The drive member 411 and the bearing seat 414 are connected to the support platform 1. The lead screw 412 is connected to the output end of the drive member 411 and is rotatably connected to the bearing seat 414. The nut 413 is threadedly connected to the lead screw 412 and is used to drive the first electromagnet 42 to reciprocate along the first direction x. By driving the lead screw 412 to rotate through the drive member 411, the nut 413 moves linearly along the first direction x. This driving method has high axial stiffness and can withstand large thrust.

[0053] Furthermore, such as Figure 5 As shown, the drive unit 41 also includes a first pulley 415, a transmission belt 416, and a second pulley 417. The drive component 411 is a rotary motor. The first pulley 415 is connected to the output end of the drive component 411, and the second pulley 417 is connected to one end of the lead screw 412. The first pulley 415 and the second pulley 417 are connected by the transmission belt 416. By setting the diameter ratio of the first pulley 415 and the second pulley 417, the speed and torque relationship between the output shaft of the rotary motor and the lead screw 412 can be flexibly changed. Specifically, when the diameter of the second pulley 417 is larger than the diameter of the first pulley 415, speed reduction and torque increase are achieved. A rotary motor with a smaller torque and higher speed can drive the lead screw 412, which requires a larger thrust, by reducing speed, thus reducing the cost and size of the motor. Conversely, if high speed and low thrust are required, speed can be achieved by setting the diameter of the second pulley 417 to be smaller than that of the first pulley 415.

[0054] Specifically, at least two drive units 41 are arranged along the second direction y. Correspondingly, each conveying unit 31 is fixedly provided with at least two magnetic attractors 311 along the second direction y. Thus, at least two drive units 41 drive the first electromagnet 42 to attract at least two magnetic attractors 311 one by one. It should be noted that the at least two drive units 41 can be equipped with rotary motors to increase the driving force, or they can share a single rotary motor to provide the driving force. In this case, the drive unit 41 without a rotary motor is driven by a transmission belt 416.

[0055] Furthermore, such as Figure 5As shown, the drive unit 41 in this embodiment also includes a tensioning wheel 418, a motor bracket 419, and a fixing member 410. The tensioning wheel 418 is rotatably connected to the support platform 1, and the transmission belt 416 is wound around the tensioning wheel 418. The motor bracket 419 has a strip-shaped through hole 4191, and the fixing member 410 passes through the strip-shaped through hole 4191 to fix the motor bracket 419 to the support platform 1. The drive member 411 is connected to the motor bracket 419. The tensioning wheel 418 is used to compensate for the plastic elongation and slack of the transmission belt 416 due to long-term use, preventing slippage, tooth skipping, or power loss. The strip-shaped through hole 4191 of the motor bracket 419 enables linear adjustment of the installation position of the drive member 411, reducing the requirements for machining and assembly precision. The fixing member 410 uses bolts, which can be quickly loosened, adjusted, and tightened using general-purpose tools. Correspondingly, anti-loosening nuts or spring washers are used to ensure that it does not loosen during operation.

[0056] like Figure 5 As shown, to prevent the first electromagnet 42 from pitching, swaying, or shaking during movement, which would affect its adsorption stability with the magnetic attraction component 311 of the conveying assembly 3, in this embodiment, the conveying platform 100 further includes a second guide rail 6 and a second slider 7 extending along the first direction x. The second guide rail 6 is fixed to the support platform 1, the first electromagnet 42 is mounted on the second slider 7, and the driving component 411 is used to drive the second slider 7 to reciprocate along the second guide rail 6. Thus, the second guide rail 6, through the second slider 7, provides a sliding guide structure for the first electromagnet 42 parallel to the first guide rail 2 that slides with the conveying assembly 3, and provides rigid support. This ensures that the starting and ending positions of the first electromagnet 42 are accurate and repeatable each time it moves, thereby guaranteeing the accuracy of the step distance of the conveying assembly 3 each time.

[0057] The attraction force between the first electromagnet 42 and the magnetic attractor 311 is inversely proportional to the square of the distance between them. Theoretically, the closer the distance, the stronger the attraction force, and the more efficient and reliable the drive. However, in reciprocating motion, if the first electromagnet 42 and the magnetic attractor 311 are in rigid contact, positional deviations, vibrations, or impacts can lead to collisions, wear, and noise, damaging the equipment's lifespan and operational stability.

[0058] To solve the above problems, such as Figure 5As shown in the figure, in this embodiment, the conveying platform 100 further includes a first elastic plate 9, which is installed between the second slider 7 and the first electromagnet 42. The first electromagnet 42 and the magnetic attractor 311 are spaced apart. When the first electromagnet 42 is energized, the magnetic force it generates attracts the magnetic attractor 311. Under the action of the magnetic force, the first elastic plate 9 deforms, allowing the first electromagnet 42 to move towards the magnetic attractor 311 and adhere to it, generating maximum attraction force. When the first electromagnet 42 is de-energized, the first elastic plate 9, under the action of elasticity, drives the first electromagnet 42 to reset. At this time, a gap is formed between the first electromagnet 42 and the magnetic attractor 311, and the first electromagnet 42 will not contact the magnetic attractor 311, thereby avoiding collision, wear, and noise between the first electromagnet 42 and the magnetic attractor 311 when the first electromagnet 42 moves along the first direction x. In other embodiments, the first elastic plate 9 can also be replaced with other components with elastic deformation, such as springs, plastic plates, etc., so that the first electromagnet 42 can move away from the second slider 7 when the first electromagnet 42 and the magnetic attractor 311 generate attraction, and after the attraction disappears, the first electromagnet 42 returns to its original position close to the second slider 7 under the elastic force, and there is a gap between it and the magnetic attractor 311, thereby preventing the first electromagnet 42 from contacting the magnetic attractor 311 during movement.

[0059] The magnetic field generated by the first electromagnet 42 when energized will magnetize its adjacent magnetically conductive structures, such as the second slider 7 and the second guide rail 6. The magnetized second slider 7 and the second guide rail 6 will generate unnecessary and uncontrolled magnetic attraction forces with the magnetic suction element 311 of the conveying assembly 3 or other steel components. This will additionally increase the load on the drive unit 41, leading to increased power consumption, increased heat generation, and even affecting positioning accuracy.

[0060] To solve the above problems, such as Figure 5 As shown in the figure, in this embodiment, the conveying platform 100 also includes a non-magnetic plate 8, which is installed between the first elastic plate 9 and the second slider 7. Specifically, the non-magnetic plate 8 is a partition made of a high magnetic resistance (low magnetic permeability) material, commonly including austenitic stainless steel (such as 304, 316), aluminum, copper, or engineering plastics. Due to its high magnetic resistance characteristics, the non-magnetic plate 8 effectively prevents the magnetization of the second slider 7 and the second guide rail 6 structure, thereby avoiding increasing the load on the drive unit 41, reducing power consumption and heat generation, and improving positioning accuracy.

[0061] The magnetic field generated by the first electromagnet 42 when energized will magnetize its adjacent magnetically conductive structures, such as the second slider 7 and the second guide rail 6. The magnetized second slider 7 and the second guide rail 6 will generate unnecessary and uncontrolled magnetic attraction forces with the magnetic suction element 311 of the conveying assembly 3 or other steel components. This will additionally increase the load on the drive unit 41, leading to increased power consumption, increased heat generation, and even affecting positioning accuracy.

[0062] To solve the above problems, such as Figure 5As shown, in this embodiment, the conveying platform 100 further includes a non-magnetic plate 8, which is installed between the first elastic plate 9 and the second slider 7. Specifically, the non-magnetic plate 8 is a partition made of a high magnetic resistance (low magnetic permeability) material, commonly including austenitic stainless steel (such as 304, 316), aluminum, copper, or engineering plastics. Due to its high magnetic resistance characteristics, the non-magnetic plate 8 effectively prevents the magnetization of the second slider 7 and the second guide rail 6 structure, thereby avoiding increasing the load on the drive unit 41, reducing power consumption and heat generation, and improving positioning accuracy.

[0063] like Figure 5 As shown, in this embodiment, the conveying platform 100 further includes a position sensor 12, which is mounted on the support platform 1. The position sensor 12 is used to detect the position of the first electromagnet 42. The first electromagnet 42 is the direct output of the driving action, and its position can reflect the actual stroke and endpoint of the action applied by the conveying component 3. During operation, the controller issues a command to the drive unit 41 to move, driving the first electromagnet 42 to move. The actual position is detected in real time by the position sensor 12. The feedback signal from the position sensor 12 is compared with the target command, and the controller corrects the drive output. In this way, slippage caused by factors such as lead screw backlash, belt elastic deformation, and load changes can be dynamically compensated, ensuring that the first electromagnet 42 moves accurately to the preset position.

[0064] like Figures 7-9 As shown, the difference between the second embodiment and the first embodiment lies only in the specific structure of the driving component 411. In the second embodiment, the driving unit 41 includes a driving component 411, which is a linear motor. The driving component 411 includes a stator 4111 and a mover 4112. The stator 4111 is connected to the support platform 1, and the mover 4112 is located on the side of the stator 4111 facing away from the support platform 1. A first electromagnet 42 is connected to the side of the mover 4112 facing away from the stator 4111. By directly connecting the mover 4112 of the linear motor to the first electromagnet 42 for linear motion along the first direction x, the driving force acts directly on the load without the need for a transmission structure. This eliminates inherent error sources in current sprocket and chain drives, such as backlash, elastic deformation, and pitch error. Furthermore, the linear motor does not have the rotational inertia limitation of rotating parts, allowing the adsorption-pulling-release-resetting cycle of the first electromagnet 42 to be performed quickly, thus improving the conveying speed.

[0065] Specifically, at least two drive units 41 are arranged along the second direction y. Correspondingly, each conveying unit 31 is fixedly provided with at least two magnetic attracting elements 311 along the second direction y. In this way, at least two drive units 41 drive the first electromagnet 42 to attract at least two magnetic attracting elements 311 one by one.

[0066] like Figure 10As shown, in some embodiments, the conveying platform 100 further includes a base 10 and a second elastic plate 11. The base 10 is connected to the support platform 1, and the second elastic plate 11 is connected to the side of the base 10 facing away from the support platform 1. A second electromagnet 5 is connected to the side of the second elastic plate 11 facing away from the base 10. The second electromagnet 5 and the magnetic attractor 311 are spaced apart. When the second electromagnet 5 is energized, the magnetic force it generates attracts the magnetic attractor 311. Under the action of the magnetic force, the second elastic plate 11 deforms, allowing the second electromagnet 5 to move towards the magnetic attractor 311 and adhere to it, generating maximum attraction force and locking the conveying assembly 3. When the second electromagnet 5 is de-energized, the second elastic plate 11 drives the second electromagnet 5 to reset under the action of elastic force. At this time, the second electromagnet 5 forms a gap with the magnetic attractor 311. The magnetic attractor 311 will not contact the second electromagnet 5 during the movement along the first direction x, thereby avoiding collision, wear and noise between the magnetic attractor 311 and the second electromagnet 5 when the magnetic attractor 311 moves along the first direction x.

[0067] In this embodiment, the first elastic plate 9 and the second elastic plate 11 are made of spring steel, engineering plastics or composite materials to meet the requirements of high elastic limit, yield strength and excellent fatigue resistance.

[0068] This invention also provides a printing press, including a conveyor platform 100 for conveying the substrate. Currently, printing presses are driven by chains, toothed belts, or friction rollers, which present risks of mechanical backlash, wear and elongation, and slippage, leading to cumulative registration errors in the substrate during multiple color group printings or flipping transfers. In this embodiment, the conveyor platform 100 of the printing press is driven by a drive unit 41 to cycle through the movement and reset of a first electromagnet 42, ensuring continuous movement of the conveyor assembly 3 along the first direction x around the support platform 1. Simultaneously, during the reset process of the first electromagnet 42, a second electromagnet 5 fixes the conveyor assembly 3, maintaining a stable position of the conveyor assembly 3 relative to the support platform 1. This ensures the positioning accuracy of the conveyor assembly 3 when it moves to different positions, and the reliability of the relative position of the substrate to the printing unit during printing.

[0069] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A conveying platform, characterized in that, include: Support platform (1); A conveying assembly (3) is arranged around the outer periphery of the support platform (1) along a first direction (x). The conveying assembly (3) includes a magnetic suction member (311) which is arranged around the outer periphery of the support platform (1) along the first direction (x). The driving assembly (4) includes a driving unit (41) and a first electromagnet (42) for attracting the magnetic attractant (311). The driving unit (41) is mounted on the support platform (1), and the output end of the driving unit (41) is connected to the first electromagnet (42) to drive the first electromagnet (42) to reciprocate along a first direction (x). as well as The second electromagnet (5) is installed on the support platform (1) and is located between the magnetic suction member (311) and the support platform (1) for adsorbing and fixing the conveying assembly (3).

2. The conveying platform according to claim 1, characterized in that, The conveying platform (100) further includes a first guide rail (2), which is fixed to the support platform (1) and extends along the first direction (x), and the conveying assembly (3) is slidably connected to the first guide rail (2).

3. The conveying platform according to claim 2, characterized in that, The first guide rail (2) includes at least two, and the at least two first guide rails (2) are arranged along a second direction (y), which is perpendicular to the first direction (x).

4. The conveying platform according to claim 3, characterized in that, The conveying assembly (3) further includes a plurality of conveying units (31) that are hinged end to end and arranged around the outer periphery of the support platform (1) along the first direction (x). The magnetic suction element (311) is fixed to the conveying unit (31), and at least one of the conveying units (31) is slidably connected to the first guide rail (2).

5. The conveying platform according to claim 4, characterized in that, The conveying unit (31) includes a first slider (312), a chain link (313), a chain plate (314), and a hinge (315). The first slider (312) is slidably connected to the first guide rail (2). The chain link (313) is connected to the first slider (312). The magnetic suction member (311) is fixed to the chain link (313). The chain plate (314) is connected to the magnetic suction member (311). The chain links (313) of two adjacent conveying units (31) are connected by the hinge (315). The hinge (315) extends along the second direction (y).

6. The conveying platform according to claim 5, characterized in that, The conveying platform (100) further includes a support plate (13). The support platform (1) is connected to the support plate (13) at both ends along the first direction (x). The two support plates (13) form an arc surface (131) on opposite sides. The arc surface (131) of one support plate (13) abuts against the hinge (315) of at least one conveying unit (31).

7. The conveying platform according to claim 1, characterized in that, The drive unit (41) includes a drive component (411), which is a linear motor. It includes a stator (4111) and a mover (4112). The stator (4111) is connected to the support platform (1), and the mover (4112) is located on the side of the stator (4111) away from the support platform (1). The first electromagnet (42) is connected to the side of the mover (4112) away from the stator (4111).

8. The conveying platform according to claim 1, characterized in that, The drive unit (41) includes a drive component (411), a lead screw (412), a nut (413), and a bearing seat (414). The drive component (411) and the bearing seat (414) are connected to the support platform (1). The lead screw (412) is connected to the output end of the drive component (411). The lead screw (412) is rotatably connected to the bearing seat (414). The nut (413) is threadedly connected to the lead screw (412). The nut (413) is used to drive the first electromagnet (42) to reciprocate along the first direction (x).

9. The conveying platform according to claim 8, characterized in that, The drive unit (41) further includes a first pulley (415), a transmission belt (416), and a second pulley (417). The drive component (411) is a rotary motor. The first pulley (415) is connected to the output end of the drive component (411), and the second pulley (417) is connected to one end of the lead screw (412). The first pulley (415) and the second pulley (417) are connected by the transmission belt (416).

10. The conveying platform according to claim 9, characterized in that, The drive unit (41) further includes a tension wheel (418), a motor bracket (419), and a fixing member (410). The tension wheel (418) is rotatably connected to the support platform (1). The transmission belt (416) is wound around the tension wheel (418). The motor bracket (419) has a strip-shaped through hole (4191). The fixing member (410) passes through the strip-shaped through hole (4191) to fix the motor bracket (419) to the support platform (1). The drive member (411) is connected to the motor bracket (419).

11. The conveying platform according to claim 7 or 8, characterized in that, The conveying platform (100) further includes a second guide rail (6) and a second slider (7) extending along the first direction (x). The second guide rail (6) is fixed to the support platform (1). The first electromagnet (42) is mounted on the second slider (7). The driving member (411) is used to drive the second slider (7) to reciprocate along the second guide rail (6).

12. The conveying platform according to claim 11, characterized in that, The conveying platform (100) also includes a first elastic plate (9), which is installed between the second slider (7) and the first electromagnet (42), and the first electromagnet (42) and the magnetic attractor (311) are spaced apart.

13. The conveying platform according to claim 12, characterized in that, The conveying platform (100) also includes a non-magnetic plate (8), which is installed between the first elastic plate (9) and the second slider (7).

14. The conveying platform according to claim 1, characterized in that, The conveying platform (100) further includes a base (10) and a second elastic plate (11). The base (10) is connected to the support platform (1). The second elastic plate (11) is connected to the side of the base (10) away from the support platform (1). The second electromagnet (5) is connected to the side of the second elastic plate (11) away from the base (10). The second electromagnet (5) and the magnetic attractor (311) are spaced apart.

15. The conveying platform according to claim 1, characterized in that, The conveying platform (100) also includes a position sensor (12), which is located on the support platform (1) and is used to detect the position of the first electromagnet (42).

16. A printing press, characterized in that, Includes a transport platform (100) as described in any one of claims 1-15, the transport platform (100) being used for transporting the substrate.

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