Cover discharging system and cover printing machine

Abstract

The invention relates to a cover discharging system. The cover discharging system comprises a feeding unit; the suction cup unit comprises a plurality of suction cup assemblies, the suction cup assemblies rotate around the Y axis of a given coordinate system and form a suction state and a release state along a rotating path, and when any suction cup assembly is in the release state, the adjacent suction cup assemblies on the upstream of the rotating path are in the suction state; the first driving unit is used for driving the suction cup unit to move along the X axis of a given coordinate system and switch between a cover suction position and a cover discharging position; the second driving unit is used for driving the suction cup assembly to rotate around the Y axis of the given coordinate system and to be switched between the suction state and the release state. The cover discharging system has the advantages that the efficient and flexible cover discharging process can be achieved, and the cover discharging system adapts to different types of covers so that the flexibility of a production line can be improved.

Description

Technical Field

[0001] This application relates to the technical field of lid printing equipment, and specifically relates to a lid feeding system and a lid printing machine. Background Art

[0002] In a prior art suction cup system, an auxiliary air storage tank is connected to a suction cup assembly, a vacuum air storage tank, and a compressed air supply device through pipelines respectively, and valves are installed on each pipeline. Among them, the valves on the pipeline connecting the auxiliary air storage tank and the vacuum air storage tank and the valves on the pipeline connecting the auxiliary air storage tank and the compressed air supply device are not opened simultaneously; the vacuum air storage tank provides a negative pressure environment for the auxiliary air storage tank, and then the auxiliary air storage tank provides a negative pressure environment for the suction cup assembly to vacuum adsorb workpieces; the compressed air supply device provides a positive pressure environment for the auxiliary air storage tank, and then the auxiliary air storage tank provides a positive pressure environment for the suction cup assembly to release the workpieces; a vacuum detection device is connected to the auxiliary air storage tank and is used to detect whether the negative pressure environment of the auxiliary air storage tank reaches the level for sucking workpieces. This suction cup system has perfect functions, high safety factor, convenient operation, improves the efficiency and speed of workpiece loading, and is applicable to loading glass of different sizes, with strong versatility.

[0003] However, there are some significant defects in the prior art lid feeding system. Since the prior art includes placing a stack of lids vertically and providing a negative pressure environment for the auxiliary air storage tank through a vacuum air storage tank to adsorb to the inner surface of the workpiece, difficulties will be encountered when dealing with different types of lids. For lids with a deeper inner surface depth, the cylinder requires a larger telescopic stroke to complete the lid separation action, which directly limits the frequency of lid separation actions per unit time. This limitation not only reduces the efficiency of the lid feeding system but also directly affects the printing speed of the entire lid printing machine. Summary of the Invention

[0004] To solve the above technical problems, the present application provides the following technical solutions:

[0005] The present application provides a lid feeding system, including: a feeding unit for driving the lid to move to the lid suction position; a suction cup unit including a plurality of suction cup assemblies, the suction cup assemblies having a suction state and a release state, and when the suction cup assemblies are in the suction state, the suction cup assemblies are located at the lid suction position and at least form a negative pressure space with the lid, and when the suction cup assemblies are in the release state, the suction cup assemblies are located at the lid discharging position and at least form a positive pressure space with the lid; a first driving unit for driving the suction cup unit to move between the lid suction position and the lid discharging position; and a second driving unit for driving the suction cup assemblies to switch between the suction state and the release state.

[0006] Further, the present application also provides that the suction cup unit further includes a gas distribution block, the gas distribution block includes a rotating block and a stationary block, the rotating block is rotatably connected to the stationary block, the stationary block is provided with a negative pressure pore and a positive pressure pore, the rotating block is connected to the suction cup assembly, when the suction cup assembly is in the suction state, the negative pressure pore is communicated with the air gap of the suction cup assembly, and when the suction cup assembly is in the release state, the positive pressure pore is communicated with the air gap of the suction cup assembly.

[0007] Further, the present application also provides that the suction cup assembly is disposed around the circumferential direction of the rotation axis of the rotating block and the rotating block drives the suction cup assembly to rotate, and when the suction cup assembly is located at at least a part of its rotation path, the suction cup assembly is in the suction state, and when the suction cup assembly is located at at least a part of its rotation path, the suction cup assembly is in the release state.

[0008] Further, the present application also provides that the suction cup assemblies are equidistantly distributed in the circumferential direction of the rotating block, the negative pressure pore is formed in a groove shape, the extending direction of the negative pressure pore is adapted to the rotation axis of the rotating block, the positive pressure pore is formed in a hole shape, and the positive pressure pore is disposed on one side of the extending direction of the negative pressure pore.

[0009] Further, the present application also provides that the first driving unit includes a driving assembly and a composite block, the driving assembly is at least used to drive the composite block to move along the X-axis of a given coordinate system, and the stationary block is fixedly connected to the composite block.

[0010] Further, the present application also provides that the driving assembly includes a driving shaft, a turntable, a connecting rod and a guide rod, the driving shaft is axially and drivingly connected to the turntable, one end of the connecting rod is rotatably disposed on the end face of the turntable, the other end of the connecting rod is rotatably disposed on the composite block, the axial direction of the guide rod is parallel to the X-axis of the fixed coordinate system, and the composite block is axially movably connected to the guide rod.

[0011] Further, the present application also provides that the second driving unit includes a indexing box and a torque transmission assembly, the indexing box is connected to the driving assembly, the indexing box is drivingly connected to the torque transmission assembly, and the torque transmission assembly is drivingly connected to the rotating block.

[0012] Further, the present application also proposes that the torque transmission assembly includes a first bevel gear, a second bevel gear, a spline shaft, a third bevel gear and a fourth bevel gear. The first bevel gear is in transmission connection with the main shaft of the indexing box. The second bevel gear is in transmission connection with the first bevel gear. The spline shaft is in circumferential transmission connection with the second bevel gear. The third bevel gear is in circumferential transmission connection with the spline shaft. Moreover, the third bevel gear is axially movably connected to the spline shaft. The fourth bevel gear is in transmission connection with the third bevel gear. The fourth bevel gear is rotatably connected to the composite block.

[0013] Further, the present application also proposes that the fourth bevel gear penetrates through the composite block. The fourth bevel gear is in transmission connection with the rotating block. Moreover, the rotating shaft of the fourth bevel gear is parallel to the Y-axis of the given coordinate system.

[0014] Further, the present application also proposes that the feeding unit includes a feeding conveyor belt. The feeding opening of the feeding conveyor belt is located at the lid suction position. Moreover, the feeding conveyor belt is at least used to convey the outer wall surfaces of several lids towards the lid suction position. A cup separating member is arranged at the feeding opening of the feeding conveyor belt. The cup separating member can move perpendicular to the conveying direction of the feeding conveyor belt and is at least used to break the vacuum space between adjacent lids.

[0015] Further, the present application also proposes a lid printing machine, including the above-mentioned lid blanking system.

[0016] As can be seen from the above, a lid blanking system and a lid printing machine provided by the present application include a feeding unit, a suction cup unit, a first driving unit and a second driving unit. The feeding unit moves the lid to the suction position. The suction cup assembly forms a negative pressure space to suck the lid in the suction state. The first driving unit drives the suction cup unit to move to the blanking position. The suction cup assembly forms a positive pressure space to release the lid in the release state, accelerating the fall of the lid. And when any suction cup assembly in the rotation path is in the release state, another suction cup assembly adjacent to the upstream of this suction cup assembly is in the suction state, which can adsorb the next lid to be separated at the first time, significantly improving the lid separation efficiency. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a lid blanking system provided by an embodiment of the present application.

[0018] Figure 2 It is a schematic structural diagram of the torque transmission assembly of the lid blanking system provided by an embodiment of the present application.

[0019] Figure 3 It is a schematic structural diagram of the stationary block of the lid blanking system provided by an embodiment of the present application.

[0020] Figure 4 The top view of the stationary block of the lid blanking system provided by an embodiment of the present application.

[0021] Figure 5 The structural schematic diagram of the rotating block of the lid blanking system provided by an embodiment of the present application.

[0022] Reference numerals:

[0023] 1. Loading unit; 2. Suction cup unit; 3. Suction cup assembly; 4. First driving unit; 5. Second driving unit; 6. Air distribution block; 7. Rotating block; 8. Stationary block; 9. Negative pressure pore; 10. Positive pressure pore; 11. Driving assembly; 12. Composite block; 13. Driving shaft; 14. Turntable; 15. Connecting rod; 16. Guide rod; 17. Indexing box; 18. Torque transmission assembly; 19. First bevel gear; 20. Second bevel gear; 21. Spline shaft; 22. Third bevel gear; 23. Fourth bevel gear; 24. Loading transmission belt; 25. Cup dividing part. Detailed implementation manners

[0024] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0025] In the description of the present application, it should be understood that if there are terms such as "length", "width", "thickness", "upper", "lower", "vertical", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0026] In addition, if there are terms such as "first", "second", "third", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", "third" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "multiple", the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this application, unless otherwise clearly stipulated and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In this application, unless otherwise clearly stipulated and defined, if there is a description such as the first feature being "on" or "under" the second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or just means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as "fixed to" or "set on" or "provided on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0030] The embodiments of this application will be specifically described below with reference to the accompanying drawings.

[0031] Embodiment

[0032] A lid blanking system, comprising: a feeding unit 1 for driving a lid to move to a lid suction position; a suction cup unit 2 including a plurality of suction cup assemblies 3, the suction cup assemblies 3 having a suction state and a release state, and when the suction cup assemblies 3 are in the suction state, the suction cup assemblies 3 are located at the lid suction position and at least used to form a negative pressure space with the lid, and when the suction cup assemblies 3 are in the release state, the suction cup assemblies 3 are located at the lid blanking position and at least used to form a positive pressure space with the lid; a first driving unit 4 for driving the suction cup unit 2 to move between the lid suction position and the lid blanking position; a second driving unit 5 for driving the suction cup assemblies 3 to switch between the suction state and the release state. Through the mutual cooperation of the feeding unit 1, the suction cup unit 2, the first driving unit 4 and the second driving unit 5, the stability and efficient lid separation during the movement of the lid are achieved.

[0033] Specifically, the feeding unit 1 is responsible for moving the lid to the suction position to ensure that the lid can smoothly enter the working area of the suction cup unit 2. The suction cup unit 2 realizes the suction and release of the lid through the switching between negative pressure and positive pressure. The first driving unit 4 moves the suction cup unit 2 between the suction position and the blanking position to ensure that the lid can accurately reach the blanking position. The second driving unit 5 realizes the efficient lid separation by controlling the switching of the suction cup assemblies 3 between the suction state and the release state.

[0034] Compared with the prior art, the present invention realizes the stable suction and release of the lid through the switching between negative pressure and positive pressure of the suction cup unit 2, avoiding the problem of limited lid separation frequency caused by different depths of the inner surface of the lid. The cooperation of the first driving unit 4 and the second driving unit 5 ensures the stability and efficient lid separation during the movement of the lid, improving the printing speed and efficiency of the lid printing machine.

[0035] In this embodiment, through the mutual cooperation of the feeding unit 1, the suction cup unit 2, the first driving unit 4 and the second driving unit 5, the problem of maintaining stability and realizing efficient lid separation during the movement of the lid is solved. The feeding unit 1 moves the lid to the suction position, and the suction cup unit 2 realizes the suction and release of the lid through the switching between negative pressure and positive pressure. The first driving unit 4 moves the suction cup unit 2 between the suction position and the blanking position, and the second driving unit 5 is used to switch the state of the suction cup assemblies 3 between the suction state and the release state. Thereby, this embodiment not only improves the printing speed and efficiency of the lid printing machine, but also ensures the stability of the lid and the efficiency of lid separation.

[0036] Furthermore, the suction cup unit 2 further includes a gas distribution block 6. The gas distribution block 6 includes a rotating block 7 and a stationary block 8. The rotating block 7 is rotatably connected to the stationary block 8. The stationary block 8 is provided with a negative pressure pore 9 and a positive pressure pore 10. The rotating block 7 is connected to the suction cup assembly 3. When the suction cup assembly 3 is in the suction state, the negative pressure pore 9 is communicated with the air gap of the suction cup assembly 3. When the suction cup assembly 3 is in the release state, the positive pressure pore 10 is communicated with the air gap of the suction cup assembly 3.

[0037] With this design, the suction cup unit 2 can effectively switch between the suction and release states. Specifically, when the suction cup assembly 3 is in the suction state, the negative pressure pore 9 is communicated with the air gap of the suction cup assembly 3, thereby forming a negative pressure to adsorb the lid to ensure the adsorption stability of the lid. When the suction cup assembly 3 is in the release state, the positive pressure pore 10 is communicated with the air gap of the suction cup assembly 3, thereby forming a positive pressure to release the lid and accelerate the falling speed of the lid, shortening the stroke of the suction cup assembly 3, thereby improving the blanking speed. Thus, it can be ensured that the lid can be accurately adsorbed and released, solving the problem of air flow control when the lid switches between the suction and release states.

[0038] Furthermore, the design of the gas distribution block 6 can be implemented in various ways. For example, the rotating block 7 can be rotated by a motor drive or by mechanical connection. The shapes and sizes of the negative pressure pore 9 and the positive pressure pore 10 on the stationary block 8 can be adjusted according to specific application requirements to optimize the air flow control effect. In addition, the connection method between the rotating block 7 and the suction cup assembly 3 can also be designed differently according to needs, such as using a flexible connection or a rigid connection to adapt to different working environments.

[0039] By introducing the gas distribution block 6 into the suction cup unit 2 in this application, the problem of air flow control when the lid switches between the suction and release states in the prior art is effectively solved. Compared with the prior art, the design of this application can make the suction cup group on the rotating block 7 communicate with the given-shaped negative pressure pore 9 and positive pressure pore 10 respectively during the rotation process, so as to more stably control the generation of negative pressure and positive pressure in the air gap of the suction cup assembly 3, stably control the adsorption and release of the lid, improve the working efficiency of the lid blanking system, and reduce the problem of transporting two or more lids in one blanking due to improper air flow control.

[0040] The suction cup assembly 3 is disposed around the circumference of the rotation axis of the rotating block 7 and is driven by the rotating block 7 to rotate the suction cup assembly 3. And when the suction cup assembly 3 is located at at least a part of its rotation path, the suction cup assembly 3 is in the suction state. When the suction cup assembly 3 is located at at least a part of its rotation path, the suction cup assembly 3 is in the release state.

[0041] The suction cup assembly 3 is arranged around the rotation axis of the rotating block 7 and is driven by the rotating block 7 to rotate. Through the design of the rotation path, the suction cup assembly 3 can be in a suction state or a release state at different parts of the path. In this way, the suction cup assembly 3 can automatically switch states during rotation, thereby realizing the suction and release of the lid. This design enables the suction cup assembly 3 to effectively perform suction and release operations on a specific path, improving the efficiency and reliability of the system.

[0042] Specifically, the suction cup assembly 3 can be driven by the rotation of the rotating block 7 to switch between the suction and release states at different positions on the rotation path. For example, when the suction cup assembly 3 is located at a certain section of the rotation path, that is, when the suction cup assembly 3 rotates to the adsorption part facing the outer surface of the lid, the air gap of the suction cup assembly 3 communicates with the negative pressure pore 9, thereby forming a negative pressure and entering the suction state; when the suction cup assembly 3 rotates to another section, that is, when the suction cup assembly 3 rotates to the adsorption part vertically downward, the air gap of the suction cup assembly 3 communicates with the positive pressure pore 10, thereby forming a positive pressure and entering the release state. Thus, through the continuous rotation of the rotating block 7, the automatic conversion of the suction cup assembly 3 between the suction and release states can be realized.

[0043] In this embodiment, the suction cup assembly 3 is arranged circumferentially around the rotation axis of the rotating block 7, and the rotating block 7 drives the suction cup assembly 3 to rotate, realizing the automatic state conversion of the suction cup assembly 3 on the rotation path. Compared with the prior art, the design of the present application can automatically realize the suction and release operations during rotation, avoiding the complexity of the cylinder structure and the problem of limited frequency, and improving the efficiency and reliability of the lid blanking system.

[0044] The suction cup assemblies 3 are evenly distributed circumferentially on the rotating block 7. The negative pressure pores 9 are formed in a groove shape, and the extending direction of the negative pressure pores 9 is adapted to the rotation axis of the rotating block 7. The positive pressure pores 10 are formed in a hole shape, and the positive pressure pores 10 are arranged on one side of the extending direction of the negative pressure pores 9.

[0045] The suction cup assemblies 3 are evenly distributed circumferentially on the rotating block 7, which can ensure that each suction cup assembly 3 is evenly stressed and operates during rotation. The negative pressure pores 9 are formed in a groove shape, and their extending direction is adapted to the rotation axis of the rotating block 7. Such a design can ensure that a negative pressure space can be effectively formed when the suction cup assembly 3 is in the suction state, ensuring the stable adsorption of the lid. The positive pressure pores 10 are formed in a hole shape and are arranged on one side of the extending direction of the negative pressure pores 9. Such a design can ensure that a positive pressure space can be effectively formed when the suction cup assembly 3 is in the release state, ensuring the accelerated release of the lid. Through the mutual cooperation of these technical features, the problems of the distribution of the suction cup assemblies 3 on the rotating block 7 and the structural design of the negative pressure pores 9 and the positive pressure pores 10 can be effectively solved, thereby realizing the stable suction and release of the lid.

[0046] The negative pressure pores 9 are designed to be groove-shaped, and different groove structures such as rectangular grooves and trapezoidal grooves can be adopted to meet different adsorption requirements. The positive pressure pores 10 are formed into hole shapes, and different hole structures such as round holes and oval holes can be used to ensure the efficient formation of positive pressure. The equidistant distribution of the suction cup assemblies 3 ensures the accurate position of each suction cup assembly 3. The relative positional relationship between the negative pressure pores 9 and the positive pressure pores 10 can be optimized through experiments and simulations to ensure the best performance under different working conditions.

[0047] In this embodiment, through the equidistant distribution design of the suction cup assemblies 3, the uniform force and stable operation of each suction cup assembly 3 during the rotation process are ensured; through the ingenious design of the negative pressure pores 9 and the positive pressure pores 10, the formation of effective negative pressure and positive pressure under different working conditions is ensured, thereby realizing the stable suction and release of the lid. Compared with the prior art, the technical solution provided by this application not only improves the working efficiency of the lid blanking system, but also effectively solves the stability problem of different lids during the suction and release processes.

[0048] The first driving unit 4 includes a driving component 11 and a composite block 12. The driving component 11 is at least used to drive the composite block 12 to move along the X-axis of a given coordinate system, and the stationary block 8 and the composite block 12 are fixedly connected.

[0049] In this embodiment, by setting the first driving unit 4, the driving component 11 can drive the composite block 12 to move along the X-axis direction, thereby realizing the fixed connection between the stationary block 8 and the composite block 12 and keeping synchronous movement. This design effectively solves the connection and movement problems between the stationary block 8 and the composite block 12 in the lid blanking system and ensures the stable operation of the system. The driving component 11 provides power to make the composite block 12 move along the given X-axis direction, and the stationary block 8 keeps the same movement trajectory as the composite block 12 through the fixed connection method, so as to ensure that the suction cup assembly 3 can approach or move away from the lid along the same movement trajectory to realize the suction and release of the lid.

[0050] The technical solution of this embodiment has significant advantages compared with the prior art. First, through the design of the driving component 11, the precise movement of the composite block 12 is realized, ensuring the efficient operation of the lid blanking system. Second, the fixed connection design between the stationary block 8 and the composite block 12 avoids system failures caused by unstable connections and improves the reliability of the system. Therefore, this application provides an innovative and practical technical solution to solve the connection and movement problems between the stationary block 8 and the composite block 12 in the lid blanking system.

[0051] The driving assembly 11 includes a driving shaft 13, a rotating disk 14, a connecting rod 15 and a guide rod 16. The driving shaft 13 and the rotating disk 14 are connected in axial transmission. One end of the connecting rod 15 is rotatably arranged on the end surface of the rotating disk 14, and the other end of the connecting rod 15 is rotatably arranged on the composite block 12. The axial direction of the guide rod 16 is parallel to the X-axis of the fixed coordinate system, and the composite block 12 and the guide rod 16 are axially movably connected. In this embodiment, the driving assembly 11 can be implemented in a variety of ways, such as using an electric motor, a servo motor or a hydraulic drive device to provide power. These drive devices are connected to the composite block 12 through a transmission structure to ensure that it can move along the X-axis direction. The fixed connection between the composite block 12 and the stationary block 8 can be achieved by bolts, welding or other fixing methods to ensure a stable connection between the two.

[0052] The driving assembly 11 includes a driving shaft 13, a rotating disk 14, a connecting rod 15 and a guide rod 16. The driving shaft 13 is connected to the rotating disk 14 through axial transmission. The end surface of the rotating disk 14 is rotatably connected to one end of the connecting rod 15, and the other end of the connecting rod 15 is rotatably connected to the composite block 12. The axial direction of the guide rod 16 is parallel to the X-axis of the given coordinate system, and the composite block 12 can move along the axial direction of the guide rod 16. These technical features cooperate with each other to effectively transmit motion, so that the composite block 12 can move along the X-axis direction, thereby driving related components for precise positioning and operation. This design solves the problem of motion transmission of the driving assembly 11 and ensures the stable operation of the lid unloading system.

[0053] The driving shaft 13 and the turntable 14 are connected by axial transmission, which ensures that the turntable 14 can rotate stably. One end of the connecting rod 15 is rotatably set on the end surface of the turntable 14, and the other end is rotatably set on the composite block 12. Through the connection of the connecting rod 15, the rotational motion of the turntable 14 can be transmitted to the composite block 12. The setting of the guide rod 16 enables the composite block 12 to move along the X-axis direction, ensuring the accuracy and stability of the motion transmission. The movable connection between the guide rod 16 and the composite block 12 ensures the stability and accuracy of the composite block 12 during the movement.

[0054] Through the above technical solution, this embodiment achieves high efficiency and stability in the motion transmission of the drive assembly 11. Compared with the prior art, the design of this embodiment can effectively avoid the problem of limited frequency of lid separation due to the large telescopic stroke of the cylinder, thereby improving the working efficiency and reliability of the lid unloading system. In particular, through the mutual cooperation of the driving shaft 13, the rotating disk 14, the connecting rod 15 and the guide rod 16, the composite block 12 can move accurately along the X-axis direction, ensuring the stable operation and precise positioning of the lid unloading system.

[0055] The second driving unit 5 includes an indexing box 17 and a torque transmission assembly 18. The indexing box 17 is connected to the driving assembly 11, the indexing box 17 is in transmission connection with the torque transmission assembly 18, and the torque transmission assembly 18 is in transmission connection with the rotating block 7.

[0056] Through the design of the second driving unit 5 in the technical solution of this embodiment, the indexing box 17 is connected to the driving assembly 11, and the power is transmitted to the rotating block 7 through the torque transmission assembly 18, so as to realize the conversion between the suction state and the release state of the suction cup assembly 3. The transmission connection between the indexing box 17 and the torque transmission assembly 18 ensures the smooth conversion of the suction cup assembly 3 between the suction and release states, and improves the working efficiency and reliability of the lid blanking system.

[0057] Specifically, the indexing box 17 can distribute and transmit the power from the driving assembly 11, and the torque transmission assembly 18 further transmits the power to the rotating block 7 to realize the conversion of the state of the suction cup assembly 3. As a preferred implementation manner, the torque transmission assembly 18 may include different types of gear transmission mechanisms, such as bevel gears, spline shafts 21, etc., to adapt to different usage requirements and structural layouts. In addition, the design of the torque transmission assembly 18 can be adjusted according to actual needs to optimize the efficiency and stability of power transmission.

[0058] Therefore, this embodiment solves the technical problem of how to drive the suction cup assembly 3 to convert between the suction state and the release state by introducing the combined design of the indexing box 17 and the torque transmission assembly 18. Compared with the prior art, the solution of this embodiment ensures that the conversion process of the suction cup assembly 3 is smoother and more efficient through reasonable mechanical structure design, and avoids the problem of low working efficiency caused by unstable driving, thereby improving the reliability and production efficiency of the overall system.

[0059] The torque transmission assembly 18 includes a first bevel gear 19, a second bevel gear 20, a spline shaft 21, a third bevel gear 22 and a fourth bevel gear 23. The first bevel gear 19 is in transmission connection with the main shaft of the indexing box 17, the second bevel gear 20 is in transmission connection with the first bevel gear 19, the spline shaft 21 is in circumferential transmission connection with the second bevel gear 20, the third bevel gear 22 is in circumferential transmission connection with the spline shaft 21, and moreover, the third bevel gear 22 is axially movably connected to the spline shaft 21, the fourth bevel gear 23 is in transmission connection with the third bevel gear 22, and the fourth bevel gear 23 is rotatably connected to the composite block 12.

[0060] The torque transmission assembly 18 of this embodiment is designed to achieve efficient and stable torque transmission, thus solving the technical problem of torque transmission in the lid blanking system. The first bevel gear 19 is drivingly connected to the main shaft of the indexing box 17 to ensure the power is transmitted from the indexing box 17 to the torque transmission assembly 18. The second bevel gear 20 is drivingly connected to the first bevel gear 19 to further transmit the torque. The spline shaft 21 is circumferentially drivingly connected to the second bevel gear 20 to ensure the stability of torque transmission. The third bevel gear 22 is circumferentially drivingly connected to the spline shaft 21, and the third bevel gear 22 is axially movably connected to the spline shaft 21, allowing axial movement to adapt to the transmission requirements at different positions. The fourth bevel gear 23 is drivingly connected to the third bevel gear 22, and the fourth bevel gear 23 is rotatably connected to the composite block 12 to ensure the final transmission to the rotating block 7.

[0061] The axial movable connection between the spline shaft 21 and the third bevel gear 22 provides flexibility to adapt to different transmission requirements. Specifically, the third bevel gear 22 can axially move along the spline shaft 21 within a certain range, so that the third bevel gear 22 can be drivingly connected to the fourth bevel gear 23 at different positions. This design not only improves the stability of transmission but also can adapt to different working environments and conditions. The fourth bevel gear 23 is rotatably connected to the composite block 12, ensuring the smoothness and reliability of the final transmission.

[0062] Thus, this embodiment ensures the stability and efficiency in the transmission process by reasonably configuring and connecting each gear. In particular, the axial movable connection between the spline shaft 21 and the third bevel gear 22 provides flexibility and can adapt to different transmission requirements. Compared with the prior art, the design of this application improves the efficiency and stability of torque transmission in the lid blanking system, solves the problem that the frequency of lid separation actions is limited due to the different depths of the inner surfaces of different lids in the prior art, and thus improves the overall printing speed of the lid printing machine.

[0063] The fourth bevel gear 23 penetrates through the composite block 12. The fourth bevel gear 23 is drivingly connected to the rotating block 7, and the rotating shaft of the fourth bevel gear 23 is parallel to the Y-axis of the given coordinate system.

[0064] The loading unit 1 includes a loading conveyor belt 24. The loading opening of the loading conveyor belt is located at the lid suction position. And the loading conveyor belt is at least used to convey the outer wall surfaces of several lids towards the lid suction position. A cup separating member 25 is provided at the loading opening of the loading conveyor belt. The cup separating member 25 can move perpendicular to the conveying direction of the loading conveyor belt and is at least used to break the vacuum space between adjacent lids.

[0065] The lid is conveyed to the suction position by the feeding conveyor belt, and the movement of the cup separating member 25 is utilized to break the vacuum space between adjacent lids, thereby solving the double-cup problem caused by the vacuum space between adjacent lids, enabling the suction cup assembly 3 to adsorb on the outer wall of the lid to achieve cup separation, effectively reducing the movement stroke of the suction cup assembly 3, increasing the frequency of lid separation actions per unit time, and enhancing the printing speed of the lid printing machine.

[0066] The cup separating member 25 can adopt various forms, such as a mechanical paddle, a pneumatic device, or an electric device, etc. The mechanical paddle can achieve the cup separation action through a simple mechanical structure, the pneumatic device can drive the paddle for cup separation by using compressed air, and the electric device can drive the paddle for cup separation through a motor. Different forms of the cup separating member 25 can be selected and optimized according to actual requirements to improve the cup separation efficiency and reliability.

[0067] In this application, by arranging the cup separating member 25 at the feeding port of the feeding conveyor belt, the vacuum space between adjacent lids can be effectively broken, thereby avoiding the occurrence of the double-cup phenomenon. Compared with the prior art, the technical solution of this application can significantly improve the efficiency and accuracy of lid cup separation, reduce the movement stroke of the suction cup assembly 3, increase the frequency of lid separation actions per unit time, and thus enhance the overall printing speed of the lid printing machine. In addition, the technical solution of this application has a simple structure, is easy to implement and maintain, and has high practical value.

[0068] The above embodiments are used to further illustrate this application, but do not limit this application to these specific embodiments. Any modifications, equivalent replacements, and improvements made within the spirit and principle of this application shall be understood to be within the protection scope of this application.

Claims

1. A lid blanking system, characterized in that: include: A loading unit (1) is used to drive the cover to move to a cover suction position; The suction cup unit (2) comprises a plurality of suction cup assemblies (3), wherein the suction cup assemblies (3) rotate around a Y axis of a given coordinate system and form a suction state and a release state along a rotation path; when the suction cup assembly (3) is in the suction state, the suction cup assembly (3) is located at the lid suction position and is at least used to form a negative pressure space between the suction cup assembly (3) and the lid; when the suction cup assembly (3) is in the release state, the suction cup assembly (3) is located at the lid unloading position and is at least used to form a positive pressure space between the suction cup assembly (3) and the lid; and when any of the suction cup assemblies (3) is in the release state, the suction cup assembly (3) adjacent to the upstream of the rotation path is in the suction state; A first driving unit (4) is used to drive the suction cup unit (2) to move along the X-axis of a given coordinate system and switch between the lid suction position and the lid unloading position; The second driving unit (5) is used to drive the suction cup assembly (3) to rotate around the Y axis of the given coordinate system and switch between the suction state and the release state.

2. The lid unloading system according to claim 1, characterized in that: The suction cup unit (2) further comprises an air distribution block (6), wherein the air distribution block (6) comprises a rotating block (7) and a stationary block (8), wherein the rotating block (7) is rotatably connected to the stationary block (8), wherein the stationary block (8) is provided with a negative pressure pore (9) and a positive pressure pore (10), wherein the rotating block (7) is connected to the suction cup assembly (3), wherein when the suction cup assembly (3) is in the suction state, the negative pressure pore (9) is connected to an air gap of the suction cup assembly (3), and when the suction cup assembly (3) is in the release state, the positive pressure pore (10) is connected to an air gap of the suction cup assembly (3).

3. The lid unloading system according to claim 2, characterized in that: The suction cup assembly (3) is arranged around the circumference of the rotation axis of the rotating block (7) and is driven by the rotating block (7) to rotate the suction cup assembly (3); when the suction cup assembly (3) is located at least a part of its rotation path, the suction cup assembly (3) is in a suction state; when the suction cup assembly (3) is located at least a part of its rotation path, the suction cup assembly (3) is in a release state.

4. The lid unloading system according to claim 3, characterized in that: The suction cup assembly (3) is equidistantly distributed around the rotating block (7); the negative pressure pore (9) is formed into a groove shape; the extension direction of the negative pressure pore (9) is compatible with the rotation axis of the rotating block (7); the positive pressure pore (10) is formed into a hole shape; and the positive pressure pore (10) is arranged on one side of the extension direction of the negative pressure pore (9).

5. The lid unloading system according to claim 2, characterized in that: The first driving unit (4) comprises a driving component (11) and a composite block (12); the driving component (11) is at least used to drive the composite block (12) to move along the X-axis direction of a given coordinate system; and the stationary block (8) and the composite block (12) are fixedly connected.

6. The lid unloading system according to claim 5, characterized in that: The driving assembly (11) comprises a driving shaft (13), a rotating disk (14), a connecting rod (15) and a guide rod (16); the driving shaft (13) and the rotating disk (14) are axially connected to each other; one end of the connecting rod (15) is rotatably arranged on the end surface of the rotating disk (14); the other end of the connecting rod (15) is rotatably arranged on the composite block (12); the axial direction of the guide rod (16) is parallel to the X-axis of the fixed coordinate system; and the composite block (12) and the guide rod (16) are axially movably connected.

7. The lid unloading system according to claim 5, characterized in that: The second driving unit (5) comprises a graduation box (17) and a torque transmission assembly (18); the graduation box (17) is connected to the driving assembly (11); the graduation box (17) is transmission-connected to the torque transmission assembly (18); and the torque transmission assembly (18) is transmission-connected to the rotating block (7).

8. The lid unloading system according to claim 7, characterized in that: The torque transmission assembly (18) comprises a first bevel gear (19), a second bevel gear (20), a spline shaft (21), a third bevel gear (22) and a fourth bevel gear (23); the first bevel gear (19) is drivingly connected to the main shaft of the indexing box (17); the second bevel gear (20) is drivingly connected to the first bevel gear (19); the spline shaft (21) is circumferentially connected to the second bevel gear (20); the third bevel gear (22) is circumferentially connected to the spline shaft (21); the third bevel gear (22) is axially movably connected to the spline shaft (21); the fourth bevel gear (23) is drivingly connected to the third bevel gear (22); and the fourth bevel gear (23) is rotatably connected to the composite block (12).

9. The lid unloading system according to claim 8, characterized in that: The fourth bevel gear (23) passes through the composite block (12), the fourth bevel gear (23) is transmission-connected to the rotating block (7), and the rotating shaft of the fourth bevel gear (23) is parallel to the Y axis of the given coordinate system.

10. The lid unloading system according to claim 1, characterized in that: The loading unit (1) comprises a loading conveyor belt (24), the loading port of the loading conveyor belt is located at the lid suction position, and the loading conveyor belt is at least used to transport the outer wall surfaces of a plurality of lids toward the lid suction position, and a cup separating member (25) is provided at the loading port of the loading conveyor belt, the cup separating member (25) can move perpendicular to the conveying direction of the loading conveyor belt, and is at least used to break the vacuum space between adjacent lids.

11. A cover printing machine, characterized in that: It comprises a lid unloading system as described in any one of claims 1-10.

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