A dragon-shaped arm squeegee printing machine with wide-range adjustment

Abstract

The utility model discloses a wide area regulation's dragon shape swing arm silk screen printing machine, including frame, be provided with the receiving body subassembly on the frame, the receiving body subassembly includes the wing plate spare, the wing plate spare lower part rotation setting has the steering adjustment spare of fixed setting on the frame, the utility model low -cost dragon shape swing arm silk screen printing machine has realized the good versatility of large and small area printing, and the flexible extension of multiple specifications and models is convenient, and can realize the extension of multiple specifications and models under the prerequisite of not changing the main body structure with low cost, its feeding and discharging efficiency is higher, can satisfy the demand of larger printing area simultaneously, and effectively reduce the equipment manufacturing cost and improve the safety performance, simultaneously, make the equipment can easily adapt to different thickness, different height requirement's various printing material, need not to the complicated modification or use additional cushion block to equipment main part, further enhanced the versatility and practicality of equipment.

Description

Technical Field

[0001] This utility model relates to the field of screen printing technology, specifically a wide-range adjustable dragon-shaped rocker arm screen printing machine. Background Technology

[0002] Screen printing equipment is a specialized machine used to achieve the printing process. Its principle is to use a squeegee to transfer ink from the graphic area on the screen to the substrate. The equipment that achieves this purpose is called screen printing equipment.

[0003] Existing screen printing equipment is mainly divided into two categories based on its structure: swing-arm screen printing machines and vertical lifting screen printing machines. Swing-arm screen printing machines are further subdivided into two types: small swing-arm screen printing machines for small-area screen printing and angled-arm screen printing machines for large-area screen printing. However, these two types of swing-arm screen printing machines cannot simultaneously handle both large and small areas. Furthermore, large-area angled-arm screen printing machines have excessively high manufacturing costs and poor safety. Small swing-arm screen printing machines, due to their structure, cannot be effectively expanded to accommodate larger areas, resulting in poor versatility between the two types.

[0004] In summary, existing swing-arm screen printing machines suffer from poor versatility. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution for a wide-range adjustable dragon-shaped rocker arm screen printing machine that can solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wide-range adjustable dragon-shaped rocker arm screen printing machine includes a frame, on which a receiving body assembly is provided. The receiving body assembly includes a wing plate, and a steering adjustment component fixed to the frame is rotatably provided at the lower part of the wing plate.

[0008] The front end of the wing plate is provided with a scraper arm preset interface, and a scraper arm mechanism is fixedly installed on the scraper arm preset interface.

[0009] The wing plate is provided with a net arm connecting assembly below the scraper arm preset interface, and a net arm mechanism is connected to the net arm connecting assembly.

[0010] A rearwardly extending bridging component is fixed on the net arm connecting assembly, and a receiving body off-net mechanism is provided in the middle of the wing plate. The receiving body off-net mechanism includes a clutch assembly and a drive mechanism provided on the wing plate. The clutch assembly and the bridging component work together to control the opening and closing action between the scraping arm mechanism and the net arm mechanism.

[0011] The lower rear end of the wing plate is provided with a swing docking area, and a swing mechanism fixed on the frame is docked on the swing docking area;

[0012] The net arm mechanism is provided with a worktable adjustment mechanism below it. The swing mechanism and the steering adjustment component work together to control the opening and closing of the net arm mechanism and the worktable adjustment mechanism.

[0013] The worktable adjustment mechanism includes the worktable, lifting and adjusting components, dovetail slide module, and worktable support.

[0014] As a further aspect of the present invention: the worktable is disposed above the lifting adjustment component, the lifting adjustment component is used for height adjustment, the lifting adjustment component is disposed on the worktable support, the worktable support is supported and connected to the dovetail slide module, the dovetail slide module includes a guide rail fixed on the frame and a dovetail slide component that slides on the guide rail, and a threaded adjustment rod for adjusting the height of the worktable support is rotatably disposed below the worktable support.

[0015] As a further aspect of the present invention: the clutch assembly includes a cam shaft component rotatably mounted on the wing plate component and a cam transmission component fixedly mounted on the cam shaft component, wherein the cam transmission component is in transmission cooperation with the bridging component.

[0016] The drive mechanism includes an external power source or a manual operation unit for driving the clutch assembly to rotate.

[0017] The swing docking area extends downward to form an L-shaped lever structure on the wing plate. The swing mechanism is fixedly connected to the lower end of the swing docking area. The swing mechanism drives the receiving body assembly to swing and adjust along the steering adjustment member with a force-saving lever.

[0018] As a further aspect of the present invention: the swing mechanism includes a pneumatic push-pull swing mechanism, the pneumatic push-pull swing mechanism includes a cylinder, a slide table driven by the cylinder, and a pull arm assembly rotatably connected to the slide table, the cylinder driving the slide table to reciprocate in the up-down direction;

[0019] One end of the pull arm assembly is rotatably connected to the slide table, and the other end of the pull arm assembly is rotatably connected to the front end of the swing docking area. The swing docking area and the steering adjustment component form a force-saving lever swing arm motion pair under the action of the pull arm assembly.

[0020] As a further aspect of the present invention: the swing mechanism includes an electric push-pull swing mechanism, the electric push-pull swing mechanism includes a motor, a cam swing component driven by the motor, and a cam follower rotatably connected to the lower end of the swing docking area. The motor drives the cam swing component to rotate, and the cam follower follows the rotation of the cam swing component to drive the receiving body assembly to swing.

[0021] An elastic element connects the cam swing component and the cam follower to ensure a tight connection between them. The swing docking area and the steering adjustment component form a lever-like swing arm motion pair under the action of the cam swing component and the cam follower.

[0022] As a further aspect of the present invention: the scraper arm mechanism includes a pneumatic scraper arm mechanism, the pneumatic scraper arm mechanism includes a pneumatic module, the pneumatic module includes a module frame, and the module frame is fixedly mounted on the preset interface of the scraper arm in a single-end fixed manner.

[0023] The module frame is equipped with a module slide assembly and a first stroke adjustment assembly for adjusting the front and rear displacement of the module slide assembly. A bridge plate is provided below the module slide assembly, and an imprint head assembly is provided at the front end of the bridge plate. When the imprint head assembly is in the foremost position, the bridge plate extends out of the front end of the module frame. An upward stroke adjustment bolt is fixed inside the module frame.

[0024] As a further aspect of the present invention: the scraper arm mechanism includes an electric scraper arm mechanism, the electric scraper arm mechanism includes a print head assembly and an electric module, the electric module includes a module frame, and the module frame is fixedly mounted on the scraper arm preset interface in a single-end fixed manner.

[0025] The module frame is equipped with a module slide assembly and a second stroke adjustment assembly for adjusting the front and rear displacement of the module slide assembly. A bridge plate is provided below the module slide assembly, and a print head assembly is provided at the front end of the bridge plate. When the print head assembly is in the foremost position, the bridge plate extends out of the front end of the module frame.

[0026] The second stroke adjustment assembly includes two sets of stroke adjustment rods and two sets of stroke adjustment components disposed on the two sets of stroke adjustment rods. The upper part of the two sets of stroke adjustment components is provided with a sensor and a handle bolt for fixing the stroke adjustment component. The handle bolt is used to adjust the stroke of the scraper arm. The handle bolt passes through the electric module housing and is located above the electric scraper arm.

[0027] As a further aspect of the present invention: the front end of the bridge plate is provided with a printhead support plate, and the printhead assembly includes a doctor blade assembly, a return blade assembly and a double-stroke cylinder for driving the doctor blade assembly and the return blade assembly, which are provided on the printhead support plate. Each pair of double-stroke cylinders is placed on both sides of the module frame.

[0028] As a further aspect of the present invention: a first elastic connecting unit is provided on the back side of the receiving body assembly, and a second elastic connecting unit is provided on both sides of the swing docking area. One end of the first elastic connecting unit is fixedly connected to the back side of the receiving body assembly, and the other end of the first elastic connecting unit is fixedly connected to the frame. One end of the second elastic connecting unit is fixedly connected to the swing docking area, and the other end of the second elastic connecting unit is fixedly connected to the frame.

[0029] As a further aspect of the present invention: the clutch assembly includes an eccentric wheel shaft rotatably mounted on the wing plate and an eccentric wheel fixedly mounted on the eccentric wheel shaft, wherein the eccentric wheel and the lower end face of the bridge member are in a lifting transmission engagement.

[0030] The drive mechanism includes an external power source or a manual operation unit for driving the eccentric wheel to rotate.

[0031] The bridging component has a sliding rod groove, and the lower part of the bridging component has an abutment block that abuts against the eccentric wheel component. The upper end face of the abutment block is formed with a boss that slides in the sliding rod groove. The boss has a downward through-hole for oiling, and the upper end face of the boss has a limiting component.

[0032] An auxiliary limiting component is connected to the abutment block to make the eccentric wheel abut against the abutment block.

[0033] As a further aspect of the present invention: the clutch assembly includes a limiting rod that is rotatably mounted on the wing plate, and the bridging member is fixedly provided with a tongue fastener that engages with the limiting rod.

[0034] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0035] This utility model of a low-cost dragon-shaped rocker arm screen printing machine achieves excellent versatility for printing on both large and small areas through the rational arrangement of components such as wing plates, scraper arm mechanism, screen arm mechanism, receiving body screen removal mechanism, swing mechanism, steering adjustment component, and worktable adjustment mechanism, as well as their linkage and cooperation. It facilitates flexible expansion into various specifications and models without altering the main structure, and can achieve multiple specifications and models at low cost. Compared to vertical lifting screen printing machines, it has higher loading and unloading efficiency; compared to small rocker arm screen printing machines, it can meet the needs of larger printing areas; and compared to large-area inclined arm screen printing machines, it effectively reduces equipment manufacturing costs and improves safety performance. At the same time, this design creates a safe foundation and simple conditions for application, making machine adjustment and operation simple and convenient. It helps enterprises solve the problems of labor shortages and recruitment difficulties in screen printing operation positions, comprehensively improving the practicality and economy of the equipment, and effectively solving the problem of poor versatility of existing rocker arm screen printing machines.

[0036] The lifting adjustment component in the worktable adjustment mechanism is the key to the "wide-range adjustment" function. It allows the worktable to be adjusted in height over a wide range. This design enables the equipment to easily adapt to various substrates with different thicknesses and heights without the need for complex modifications to the main body of the equipment or the use of additional pads, further enhancing the equipment's versatility and practicality. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural view of the printing state of one embodiment of the present invention;

[0038] Figure 2 This is a perspective view of the internal structure of an embodiment of the present invention in its printed state;

[0039] Figure 3This is a three-dimensional structural view of a net-lifting state according to an embodiment of this utility model;

[0040] Figure 4 This is a three-dimensional structural view of a pneumatic push-pull swing mechanism in one embodiment of this utility model;

[0041] Figure 5 This is a three-dimensional structural view of the electric scraper arm mechanism in one embodiment of the present invention;

[0042] Figure 6 This is a perspective view of the internal structure of the electric scraper arm mechanism in one embodiment of this utility model;

[0043] Figure 7 This is a three-dimensional structural view of an electric push-pull swing mechanism in one embodiment of the present invention;

[0044] Figure 8 This is a perspective view of the internal structure of an electric push-pull swing mechanism in another embodiment of this utility model;

[0045] Figure 9 This is a three-dimensional structural view of a receiving body assembly according to an embodiment of the present invention;

[0046] Figure 10 This is a perspective view of the internal structure of the mesh in a combined state according to an embodiment of the present invention;

[0047] Figure 11 This is a perspective view of the internal structure of an embodiment of the present invention in an off-grid state;

[0048] Figure 12 This is a perspective view of the internal structure of the mesh in another embodiment of the present invention.

[0049] Figure 13 This is a perspective view of another internal structure of the combined network state according to another embodiment of the present invention;

[0050] Figure 14 yes Figure 13 A partial view at point A in the middle;

[0051] Figure 15 This is a perspective view of the internal structure of the mesh in another embodiment of the present invention.

[0052] The reference numerals and names in the figure are as follows:

[0053] Frame-101, Receiving Body Assembly-102, Wing Plate Part-103, Steering Adjustment Part-104, Scraper Arm Preset Interface-105, Scraper Arm Mechanism-106, Net Arm Connection Assembly-107, Net Arm Mechanism-108, Bridging Part-109, Receiving Body Off-Net Mechanism-110, Clutch Assembly-111, Drive Mechanism-112, Swinging Docking Area-113, Swinging Mechanism-114, Workbench Adjustment Mechanism-116, Workbench-117, Lifting Adjustment Assembly Component-118, Dovetail Slide Module-119, Worktable Support-120, Guide Rail-121, Dovetail Slide Component-122, Threaded Adjustment Rod-123, Cam Shaft Component-124, Cam Drive Component-125, Pneumatic Push-Pull Swing Mechanism-128, Cylinder Component-129, Slide Table-130, Pull Arm Assembly-131, Electric Push-Pull Swing Mechanism-132, Motor Component-133, Cam Swing Component-134, Cam Follower-135, Elastic Component- 136, Pneumatic scraper arm mechanism - 137, Pneumatic module - 138, Module frame - 139, Module slide assembly - 140, First stroke adjustment assembly - 141, Bridge plate - 142, Print head assembly - 143, Stroke adjustment bolt - 144, Electric scraper arm mechanism - 145, Electric module - 146, Second stroke adjustment assembly - 147, Stroke adjustment rod - 148, Stroke adjustment component - 149, Sensor - 150, Bolt with handle - 151, Electric module 152. Outer shell, 153. Print head support plate, 154. Doctor blade assembly, 155. Ink return blade assembly, 156. Double stroke cylinder, 157. First elastic connecting unit, 158. Second elastic connecting unit, 159. Eccentric wheel shaft, 160. Eccentric wheel, 161. Abutment block, 162. Slide bar groove, 163. Boss, 164. Oil filling hole, 165. Limiting component, 166. Auxiliary limiting component, 167. Limiting rod, 168. Tongue buckle. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0055] Please see Figure 1-15 A wide-range adjustable dragon-shaped rocker arm screen printing machine includes a frame 101, on which a receiving body assembly 102 is provided. The receiving body assembly 102 includes a wing plate 103, and a steering adjustment component 104 fixed to the frame 101 is rotatably provided at the lower part of the wing plate 103.

[0056] The front end of the wing plate 103 is provided with a scraper arm preset interface 105, and a scraper arm mechanism 106 is fixedly provided on the scraper arm preset interface 105.

[0057] The wing plate 103 is provided with a net arm connecting assembly 107 below the scraper arm preset interface 105, and a net arm mechanism 108 is connected to the net arm connecting assembly 107.

[0058] A rearwardly extending bridging member 109 is fixed on the net arm connecting assembly 107, and a receiving body net-off mechanism 110 is provided in the middle of the wing plate member 103. The receiving body net-off mechanism 110 includes a clutch assembly 111 and a drive mechanism 112 provided on the wing plate member 103. The clutch assembly 111 and the bridging member 109 are linked and cooperated to control the opening and closing action between the scraping arm mechanism 106 and the net arm mechanism 108.

[0059] The lower rear end of the wing plate 103 is provided with a swing docking area 113, and a swing mechanism 114 fixed on the frame 101 is docked on the swing docking area 113.

[0060] Below the net arm mechanism 108, there is a worktable adjustment mechanism 116. The swing mechanism 114 and the steering adjustment component 104 are linked together to control the opening and closing between the net arm mechanism 108 and the worktable adjustment mechanism 116.

[0061] The worktable adjustment mechanism 116 includes a worktable 117, a lifting adjustment component 118, a dovetail slide module 119, and a worktable support 120.

[0062] Compared to large-area inclined arm screen printing machines, this rocker arm screen printing machine performs better in terms of manufacturing cost and safety. Large-area inclined arm screen printing machines have a complex structure and require a large amount of high-strength materials and precision parts, resulting in high manufacturing costs. At the same time, their complex structure also increases the safety hazards during equipment operation, such as mechanical failures and operational errors that may lead to safety accidents. The worktable adjustment mechanism 116 can adjust the height according to the thickness of the substrate to ensure that the screen and the substrate always maintain the optimal printing gap (screen distance).

[0063] First, through the rotation setting of the wing plate 103 and the steering adjustment component 104, the linkage between the swing mechanism 114 and the steering adjustment component 104, and the design of the worktable adjustment mechanism 116, the flexible control of the opening and closing between the screen arm mechanism 108 and the worktable 117 is realized. Combined with the opening and closing action control of the scraper arm mechanism 106 and the screen arm mechanism 108 under the action of the receiving body screen removal mechanism 110, the equipment can meet the needs of small area printing and can also adapt to larger area printing through reasonable expansion. It effectively solves the problem of poor versatility of existing swing arm screen printing machines, has good versatility for large and small areas, and is convenient to expand to various specifications and models.

[0064] Secondly, the configuration and coordination of the components in this technical solution allow for the expansion of various specifications and models without altering the main structure. This can be achieved simply by adjusting and expanding the corresponding components, without requiring large-scale modifications to the main body of the equipment. This significantly reduces expansion costs and achieves the goal of low-cost expansion of various specifications and models.

[0065] Furthermore, compared to vertical lifting screen printing machines, the dragon-shaped rocker arm screen printing machine has a more convenient structure for loading and unloading operations, effectively improving loading and unloading efficiency. Compared to small rocker arm screen printing machines, it overcomes structural limitations through a reasonable mechanism layout and linkage design, making it suitable for larger printing area requirements. Compared to large-area inclined arm screen printing machines, its structure is more compact and reasonable, ensuring printing quality while reducing the manufacturing cost of the equipment itself. Moreover, the linkage and safety design of each mechanism enhances the safety performance of the equipment operation, creating a safe application foundation.

[0066] In addition, the technical solution has a simple and clear mechanism design, and the machine is easy to set up and use. It reduces the skill requirements for screen printing operators, creates simple application conditions, and helps enterprises solve the problems of difficulty in finding and recruiting screen printing operators.

[0067] In one embodiment, the pneumatic push-pull swing mechanism improves overall safety while saving costs through a systematic safety design. First, a smaller diameter cylinder is selected as the power source, and its physical output limit is limited by the piston area, restricting the maximum output force within the normal air pressure range, so that the mechanism cannot generate injury-level mechanical impact. Second, dynamic force balance is achieved through a dual-path pneumatic control circuit. When air is introduced into the cylinder drive end, an adjustable flow valve is used on the exhaust side to precisely control the gas emission rate, forming a buffer damping effect and limiting the motion acceleration within a safe threshold. At the same time, a real-time air pressure monitoring unit and a rapid pressure relief module are integrated. When the system detects that the air pressure is abnormally close to the preset safety value, the solenoid valve instantly switches the exhaust channel to achieve physical pressure relief and simultaneously cuts off the power supply, forming a multi-layer safety protection mechanism of "mechanical limiting - pneumatic buffering - electronic protection". While maintaining normal operating efficiency, it completely eliminates the risk of pressure injury, which is especially suitable for desktop equipment or automated production lines in human-machine collaboration scenarios.

[0068] The inherent safety of this dragon-shaped rocker arm screen printing machine is significantly improved. Firstly, in terms of structural stability, the screen arm mechanism 108 is directly and securely mounted on the wing plate 103 through the "screen arm connecting component 107" and linked with the screen-off mechanism through the "bridging component 109". The support and movement path of the entire squeegee-screen system are more stable and reliable, reducing the risk of vibration and deformation that may be caused by the long cantilever structure of large inclined arm machines. At the same time, the dragon-shaped rocker arm screen printing machine of this invention has controllable motion control. The "swing mechanism 114" and the "steering adjustment component" ensure that the wing plate 103 and the entire suspension assembly move within the preset trajectory and angle range. The "receiving body screen-off mechanism 110" controls the opening and closing action of the screen (screen-off height and angle) through a cam, avoiding safety hazards caused by manual intervention or uncontrollable movement. The optimization of the overall design reduces the risk points of operators being exposed to moving parts.

[0069] The lifting adjustment component in the worktable adjustment mechanism is the key to the "wide range adjustment" function. It allows the worktable to be adjusted in height over a wide range. This design enables the equipment to easily adapt to various substrates with different thicknesses and heights without the need for complex modifications to the main body of the equipment or the use of additional pads, further enhancing the equipment's versatility and practicality.

[0070] This utility model of a low-cost dragon-shaped rocker arm screen printing machine achieves excellent versatility for printing on both large and small areas through the rational arrangement of components such as the wing plate 103, scraper arm mechanism 106, screen arm mechanism 108, receiving body screen removal mechanism 110, swing mechanism 114, steering adjustment component 104, and worktable adjustment mechanism 116, as well as their linkage and cooperation. It facilitates flexible expansion into various specifications and models without altering the main structure, achieving low-cost expansion for multiple specifications and models. Compared to vertical lifting screen printing machines, it has higher loading and unloading efficiency; compared to small rocker arm screen printing machines, it can meet the needs of larger printing areas; and compared to large-area inclined arm screen printing machines, it effectively reduces equipment manufacturing costs and improves safety performance. Simultaneously, this design creates a safe foundation and simple conditions for application, making machine setup and operation simple and convenient. It helps enterprises solve the problems of labor shortages and recruitment difficulties in screen printing operation positions, comprehensively improving the practicality and economy of the equipment, and effectively solving the problem of poor versatility of existing rocker arm screen printing machines.

[0071] In this embodiment of the utility model, the workbench 117 is disposed above the lifting adjustment component 118, which is used for height adjustment. The lifting adjustment component 118 is disposed on the workbench support 120, which is supported and connected to the dovetail slide module 119. The dovetail slide module 119 includes a guide rail 121 fixed on the frame 101 and a dovetail slide component 122 that slides on the guide rail 121. A threaded adjustment rod 123 for adjusting the height of the workbench support 121 is rotatably disposed below the workbench support 121.

[0072] By positioning the worktable above the lifting and adjusting assembly and supporting it with a worktable bracket, and ensuring the bracket is securely connected to the dovetail slide module (which includes fixed guide rails and a sliding dovetail slide), the rigidity and anti-eccentric load capacity of the worktable during vertical lifting are ensured. The key lies in the threaded adjusting rod located beneath the worktable bracket. This rotating design provides precise, stable, and easy-to-operate height fine-tuning, allowing operators to quickly and precisely adjust the worktable to the optimal printing height according to the thickness of the substrate or special fixture requirements. This effectively guarantees the parallelism between the screen and the substrate and the uniformity of printing pressure. The high-precision guiding characteristics of the dovetail slide module further enhance the smoothness and positioning accuracy of the lifting process, preventing the worktable from shifting or vibrating during adjustment or printing, thereby significantly improving print quality and simplifying equipment adaptation for substrates of different heights.

[0073] In this embodiment of the present invention, the clutch assembly 111 includes a cam shaft 124 rotatably mounted on the wing plate 103 and a cam transmission component 125 fixedly mounted on the cam shaft 124. The cam transmission component 125 is in transmission cooperation with the bridge component 109.

[0074] The drive mechanism 112 includes an external power source or a manual operation unit for driving the clutch assembly 111 to rotate.

[0075] The swing docking area 113 extends downward to form an L-shaped lever structure for the wing plate 103. The swing mechanism 114 is fixedly connected to the lower end of the swing docking area 113. The swing mechanism 114 drives the receiving body assembly 102 to swing and adjust along the steering adjustment member 104 with a force-saving lever.

[0076] In this utility model of a dragon-shaped rocker arm screen printing machine, the clutch assembly 111 includes a cam shaft 124 rotatably mounted on the wing plate 103, and a cam transmission component 125 fixedly mounted on the cam shaft 124. The cam transmission component 125 and the bridging component 109 form a transmission engagement. This ingenious combination provides an extremely precise and stable mechanism for controlling the opening and closing actions between the scraper arm mechanism 106 and the screen arm mechanism 108. During the printing process, different printing patterns and processes have strict requirements on the timing, angle, and force of the opening and closing of the scraper arm and the screen arm. This clutch assembly 111... According to a preset program or real-time requirements, the precise rotation of the cam shaft 124 drives the cam transmission component 125 to move along a specific trajectory, thereby precisely controlling the displacement of the bridging component 109. This enables precise control of the opening and closing actions of the scraper arm mechanism 106 and the screen arm mechanism 108, effectively avoiding printing defects caused by inaccurate opening and closing, such as uneven ink application and blurred images, significantly improving printing quality and meeting the requirements of high-precision printing. At the same time, the dual drive mode of the drive mechanism 112 greatly enhances the applicability and reliability of the equipment. On the one hand, by driving the clutch assembly 111 to rotate through an external power source, a high degree of automation in the printing process can be achieved. The external power source can output power stably according to preset parameters, so that the clutch assembly 111 can operate according to predetermined requirements, thereby driving the scraper arm mechanism 106 and the screen arm mechanism 108 to open and close according to predetermined requirements, which greatly improves printing efficiency. It is especially suitable for large-scale, batch printing production tasks, effectively shortening the production cycle and reducing labor costs. On the other hand, the setting of the manual operation unit provides reliable operation guarantee for the equipment in special circumstances. When the external power source fails, such as motor damage or power outage, the operator can quickly switch to manual operation mode and drive the clutch assembly 111 to rotate directly through the manual operation unit to continue printing operations or to debug and maintain the equipment, avoiding production stoppages caused by equipment failure and reducing economic losses caused by downtime. In addition, the manual operation mode also provides convenient conditions for equipment debugging, maintenance and teaching. Operators can more intuitively feel the working principle and movement status of the clutch assembly 111, which is convenient for troubleshooting and skills training.

[0077] In summary, the design of the clutch assembly 111 and its drive mechanism 112 in this dragon-shaped rocker screen printing machine not only improves printing quality and efficiency, but also enhances the adaptability and stability of the equipment under various working conditions, thereby reducing production costs and improving market competitiveness for enterprises.

[0078] In this utility model of a dragon-shaped rocker arm screen printing machine, the L-shaped lever structure amplifies the driving force of the swing mechanism 114 through the principle of a force-saving lever. While reducing the power source output requirements, it improves the stability of the swing of the receiving body assembly 102 along the steering adjustment component 104, effectively reducing vibration and impact during the swing process and ensuring printing accuracy. On the basis of ensuring the core power of the rocker arm screen printing machine, through the innovative combination of mechanical optimization and motion conversion, a new swing control system that takes into account efficient drive, stable operation and low maintenance costs is constructed, providing reliable technical support for multi-specification printing needs.

[0079] In this embodiment of the utility model, the swing mechanism 114 includes a pneumatic push-pull swing mechanism 128. The pneumatic push-pull swing mechanism 128 includes a cylinder 129, a slide 130 driven by the cylinder 129, and a pull arm assembly 131 rotatably connected to the slide 130. The cylinder 129 drives the slide 130 to reciprocate in the up-down direction.

[0080] One end of the pull arm assembly 131 is rotatably connected to the slide table 130, and the other end of the pull arm assembly 131 is rotatably connected to the front end of the swing docking area 113. The swing docking area 113 and the steering adjustment component 104 form a force-saving lever swing arm motion pair under the action of the pull arm assembly 131.

[0081] In this utility model, the cylinder 129 drives the slide 130 to reciprocate in a dragon-shaped rocker arm screen printing machine. Combined with the lever-arm motion pair formed by the pull arm assembly 131 and the swing docking area 113, this effectively amplifies the power output, reducing energy consumption while increasing the driving force of the squeegee arm's swing, ensuring the power requirements for large-format printing. The rotational connection between the slide 130 and the pull arm assembly 131 precisely converts the linear motion of the cylinder into angular motion. The dynamic change in the angle between the cycloidal line and the vertical direction naturally creates a deceleration process, avoiding the impact during the start-stop phase of traditional mechanical structures, thus achieving efficient squeegee operation. Smooth start-stop and flexible speed adjustment of the arm enhance the stability and precision of printing operations. The pneumatic drive mode replaces electric or other power sources, avoiding control errors caused by motor inertia and reducing equipment operation risks through the inherent safety characteristics of the pneumatic system, providing structured support for enterprises to solve safety hazards in screen printing equipment operation. Ultimately, based on ensuring the core power of the swing arm screen printing machine, a new swing control system that balances efficient drive, stable operation, and high safety is constructed through an innovative combination of mechanical optimization and motion conversion, providing reliable technical support for multi-specification printing needs.

[0082] In this embodiment of the utility model, the swing mechanism 114 includes an electric push-pull swing mechanism 132. The electric push-pull swing mechanism 132 includes a motor component 133, a cam swing component 134 driven by the motor component 133, and a cam follower 135 rotatably connected to the lower end of the swing docking area 113. The motor component 133 drives the cam swing component 134 to rotate, and the cam follower 135 follows the rotation of the cam swing component 134 to drive the receiving body assembly 102 to swing.

[0083] An elastic element 136 is connected between the cam swing member 134 and the cam follower 135 to tightly connect the cam swing member 134 and the cam follower 135. The swing docking area 113 and the steering adjustment member 104 form a lever-saving swing arm motion pair under the action of the cam swing member 134 and the cam follower 135.

[0084] In this utility model of a dragon-shaped rocker arm screen printing machine, an electric reducer drives the cam swing component 134 to rotate, and through the cam follower 135 and the swing docking area 113, a force-saving lever swing arm motion pair structure is formed, which effectively simplifies the complexity of the power transmission mechanism, reduces the space occupied by the equipment, facilitates the adaptation to various types of frame 101, and improves equipment compatibility; the setting of the elastic component 136 between the cam swing component 134 and the cam follower 135 not only ensures that the two are tightly connected to accurately transmit power, but also absorbs the vibration during operation through elastic reaction force, reduces the instability of the swing process, and significantly improves the smoothness of the scraper arm swing and the printing quality;

[0085] In one embodiment, the cam swing member 134 and the cam follower 135 are respectively equipped with a grooved nut and a grooved bearing that facilitate the installation of the elastic member 136. The detailed design of the grooved nut and the grooved bearing being connected by the elastic member 136 further enhances the safety protection effect during the downward pressing operation and avoids the operational risks caused by mechanical loosening. On the basis of ensuring the core power of the swing arm screen printing machine, a new swing control system that takes into account spatial adaptability, operational stability and operational safety is constructed by combining electric drive and cam transmission, providing reliable technical support for multi-specification printing needs.

[0086] In this embodiment of the utility model, the scraper arm mechanism 106 includes a pneumatic scraper arm mechanism 137, the pneumatic scraper arm mechanism 137 includes a pneumatic module 138, the pneumatic module 138 includes a module frame 139, and the module frame 139 is fixed on the scraper arm preset interface 105 in a single-end fixed form.

[0087] The module frame 139 is provided with a module slide assembly and a first stroke adjustment assembly 141 for adjusting the front and rear displacement of the module slide assembly. A bridge plate 142 is provided below the module slide assembly. A print head assembly 143 is provided at the front end of the bridge plate 142. When the print head assembly 143 is in the foremost position, the bridge plate 142 extends out of the front end of the module frame 139. An upward stroke adjustment bolt 144 is fixedly provided inside the module frame 139.

[0088] In this utility model of dragon-shaped rocker arm screen printing machine, the pneumatic module 138 adopts a module frame 139 with one end fixed to the pre-set interface 105 of the scraper arm. Combined with the structural characteristic that the length of the bridge plate 142 is greater than the length of the module slide, when the print head assembly 143 is in the foremost working position, the front end of the bridge plate 142 extends out of the module frame 139, effectively avoiding the space occupation problem of the slide table 130 module itself, so that the main body of the equipment occupies as little working area as possible, leaving more space for operators to pick up and put down the printing substrate, and significantly reducing the difficulty of loading and unloading operations.

[0089] The integrated design of the first stroke adjustment component 141, while retaining the front and rear displacement adjustment function, ensures that the print head component 143 can still accurately control the printing position even when it exceeds the module frame 139 through the linkage mechanism of the bridge plate 142 and the slide table 130, avoiding the loss of adjustment accuracy due to space constraints. The single-end fixed structure of the module frame 139 simplifies the assembly complexity and improves the adaptability of the equipment to different frame 101 shapes by reducing the constraints of fixed points, providing a structural basis for multi-specification expansion. The structure of the stroke adjustment bolt 144 set upward inside the module frame 139 not only avoids additional horizontal space occupation by utilizing vertical space, but also exposes the adjustment components on the top of the module frame 139, so that operators can complete the stroke adjustment without entering the equipment, improving adjustment efficiency and operational safety.

[0090] While ensuring the core functions of the pneumatic scraper arm, a new scraper arm mechanism 106 system has been constructed through innovative optimization of spatial layout, which takes into account the efficiency of operation, the convenience of operation and the compactness of equipment. This effectively solves the problem of limited operation caused by the mechanical structure occupying too much working space in traditional screen printing equipment, and provides technical support for enterprises to improve production efficiency and reduce labor costs.

[0091] In this embodiment of the utility model, the scraper arm mechanism 106 includes an electric scraper arm mechanism 145, the electric scraper arm mechanism 145 includes a print head assembly 143 and an electric module 146, the electric module 146 includes a module frame 139, and the module frame 139 is fixedly mounted on the scraper arm preset interface 105 in a single-end fixed form.

[0092] The module frame 139 is provided with a module slide assembly and a second stroke adjustment assembly 147 for adjusting the front and rear displacement of the module slide assembly. A bridge plate 142 is provided below the module slide assembly. A print head assembly 143 is provided at the front end of the bridge plate 142. When the print head assembly 143 is in the foremost position, the bridge plate 142 extends out of the front end of the module frame 139.

[0093] The second stroke adjustment assembly 147 includes two sets of stroke adjustment rods 148 and two sets of stroke adjustment components 149 disposed on the two sets of stroke adjustment rods 148. The upper part of the two sets of stroke adjustment components 149 is provided with a sensor 150 and a handle bolt 151 for fixing the stroke adjustment component 149. The handle bolt is used to adjust the scraper arm stroke and passes through the electric module housing 152 and is externally positioned above the electric scraper arm.

[0094] In this utility model of a dragon-shaped rocker arm screen printing machine, the electric module 146 adopts a module frame 139 structure with one end fixed to the pre-set interface 105 of the scraper arm. Combined with the layout where the length of the bridge plate 142 is greater than the length of the module slide, when the print head assembly 143 is in the foremost working position, the front end of the bridge plate 142 extends out of the module frame 139, effectively avoiding the space occupation problem of the electric module 146 itself, so that the main body of the equipment occupies as little working area as possible, leaving more space for the operator to pick up and put down the printing substrate, and significantly reducing the difficulty of loading and unloading operations; the second stroke adjustment component 147, through the combination design of two sets of stroke adjustment rods 148 and stroke adjustment parts 149, and the fixing method with handle bolts 151, realizes both the scraper arm adjustment and the adjustment of the printing substrate. Precise adjustment of the arm stroke is achieved through a layout where the handle bolt is externally positioned above the electric scraper arm, avoiding the inconvenience caused by embedded or side-mounted adjustment components, thus improving adjustment efficiency and space utilization. The sensor 150 is integrated into the stroke adjustment component 149, enabling real-time monitoring of the sliding position to ensure printing accuracy and equipment operational safety. While ensuring the core functions of the electric scraper arm, the innovative combination of spatial layout and adjustment mechanism constructs a new scraper arm mechanism 106 system that balances work efficiency, ease of operation, and adjustment precision. This effectively solves the problem of limited operation caused by the mechanical structure occupying too much workspace in traditional screen printing equipment, providing technical support for enterprises to improve production efficiency and reduce labor costs.

[0095] In this embodiment of the utility model, the front end of the bridge plate 142 is provided with a print head support plate 153, and the print head assembly 143 includes a doctor blade assembly 154, a return blade assembly 155 and a double-stroke cylinder 156 for driving the doctor blade assembly 154 and the return blade assembly 155, and each two sets of double-stroke cylinders 156 are respectively placed on both sides of the module frame 139.

[0096] The design of this utility model dragon-shaped rocker arm screen printing machine, in which the double-stroke cylinders 156 are symmetrically arranged on both sides of the module frame 139, forms a clearance space in the middle of the top of the print head support plate 153. This effectively avoids the risk of collision when the cylinders move back and forth in the print head assembly 143, reduces equipment vibration and component wear caused by mechanical interference, and significantly improves operational stability and service life. The configuration of the double-stroke cylinders 156 independently driving the doctor blade and the ink return blade enables precise control of printing and ink return actions, improving printing accuracy and ink utilization. Through the optimization of component positions and space reuse, the overall layout makes the equipment structure more compact and easier to maintain while ensuring core functions. At the same time, it reduces the failure rate caused by mechanical interference, providing reliable technical support for enterprises to improve production efficiency and reduce maintenance costs.

[0097] In this embodiment of the present invention, a first elastic connecting unit 157 is provided on the back side of the receiving body assembly 102, and a second elastic connecting unit 158 ​​is provided on both sides of the swing docking area 113. One end of the first elastic connecting unit 157 is fixedly connected to the back side of the receiving body assembly 102, and the other end of the first elastic connecting unit 157 is fixedly connected to the frame 101. One end of the second elastic connecting unit 158 ​​is fixedly connected to the swing docking area 113, and the other end of the second elastic connecting unit 158 ​​is fixedly connected to the frame 101.

[0098] In this utility model of a dragon-shaped rocker arm screen printing machine, elastic connecting units are provided on the back side of the receiving body assembly 102 and on both sides of the swing docking area 113, forming a flexible connection with the frame 101. During the lifting or lowering of the scraper arm, the elastic deformation absorbs mechanical impact, effectively reducing vibration and component wear during equipment operation, significantly improving the smoothness of operation and the service life of the equipment. When the swing mechanism 114 is pneumatically driven, the elastic unit can automatically assist in lifting the scraper arm when the machine is stopped and there is no air source, preventing the scraper arm from drooping due to gravity and damaging the screen or substrate tooling, providing critical protection for precision printing processes. The modular design of the elastic connecting parts allows the elastic coefficient to be adjusted according to actual needs, adapting to the buffering requirements of different specifications of substrates, while simplifying the dependence on the power system and reducing equipment failure rate and maintenance costs. Under the premise of ensuring the core action function of the scraper arm, a new type of buffer control system that takes into account the operational stability, operational safety and equipment reliability is constructed through the deep integration of elastic mechanical mechanism and safety protection function, providing a structured guarantee for the continuous and stable operation of the screen printing machine under complex working conditions.

[0099] In this embodiment of the present invention, the clutch assembly 111 includes an eccentric wheel shaft 159 rotatably mounted on the wing plate 103 and an eccentric wheel 160 fixedly mounted on the eccentric wheel shaft 159. The eccentric wheel and the lower end face of the bridge member 109 are in a lifting transmission engagement.

[0100] The drive mechanism 112 includes an external power source or a manual operation unit for driving the eccentric wheel 160 to rotate.

[0101] The bridging component 109 has a sliding rod groove 162. The lower part of the bridging component 109 has an abutment block 161 that abuts against the eccentric wheel component 160. The upper end face of the abutment block 161 is formed with a boss 163 that slides within the sliding rod groove 162. The boss 163 has a downward-through oiling hole 164. The upper end face of the boss 163 has a limiting component 165.

[0102] An auxiliary limiting member 166 is connected to the abutting block 161 to make the eccentric wheel 160 abut against the abutting block 161;

[0103] In this utility model of a dragon-shaped rocker arm screen printing machine, the combined structure of the eccentric wheel shaft 159 and the eccentric wheel 160 drives the bridging component 109 through a rotary lifting method, converting rotational motion into vertical displacement. This reduces the space occupied in the transmission while improving power transmission efficiency and reducing mechanical energy consumption. The drive mechanism 112 is compatible with both external power sources and manual operation units, ensuring the high efficiency of automated production while providing flexible options for equipment debugging, maintenance, and emergency operation through manual mode, significantly reducing reliance on highly skilled operators. The sliding fit design of the bridging component 109, the slide rail groove 162, and the boss component 163, through the precise guidance of the boss within the groove, effectively reduces the lateral force between the eccentric wheel and the abutment block 161, improving transmission stability and positional accuracy. The oil filling hole 164 structure provided in component 163 allows for the periodic injection of lubricating grease, significantly reducing the friction coefficient between the eccentric wheel and the contact block 161, reducing wear, and extending the service life of key components. The dual protection mechanism of the limiting component 165 and the auxiliary limiting component 166 not only prevents the boss component 163 from falling out of the slide groove through physical constraints, but also ensures continuous contact between the eccentric wheel and the contact block 161 through elastic assistance, avoiding transmission failure caused by mechanical loosening. Under the premise of ensuring the core function of the clutch assembly 111, a new transmission control system that takes into account power performance, operational safety, and equipment reliability is constructed through an innovative combination of compact structure, high transmission efficiency, and convenient maintenance, providing structural support for the continuous and stable operation of the rocker arm screen printing machine under complex working conditions.

[0104] In one embodiment, the clutch assembly 111 includes a limiting rod 167 rotatably mounted on the wing plate 103 at one end, and a tongue fastener 168 that engages with the limiting rod 167 is fixed on the bridging member 109.

[0105] The drive mechanism 112 includes an external power source or a manual operation unit for driving the limit rod 167 to rotate.

[0106] In this utility model of dragon-shaped rocker arm screen printing machine, the limiting rod 167 and the tongue fastener 168 adopt a hook-type rigid fastening (non-friction contact) to form a mechanical forced locking. When the screen arm is closed, the limiting rod 167 rotates to the locking position to withstand a large mass pull-out force, completely eliminating the risk of accidental opening and closing during operation and meeting the requirements of heavy load operation.

[0107] The limit lever 167 only requires a small rotation to lock / release, resulting in higher work efficiency;

[0108] The 168 hard alloy tongue fastener and the quenched limit rod form a metal interlocking pair, which has a long service life and good repeatability of the opening and closing position of the mesh arm.

[0109] The opening and closing control of the net arm mechanism 108 is simplified by engaging the limiting rod 167 with the tongue fastener 168. The net arm mechanism 108 can be opened simply by swinging the limiting rod 167. Then, by raising the net arm mechanism 108, the bridge plate 142 pieces are reset to the predetermined position. The net arm mechanism 108 can be tightened by engaging the limiting rod 167 with the tongue fastener 168. This saves production costs and lowers the operating threshold. The simplification of equipment operation and the reduction of adjustment difficulty reduce the professional skill requirements for operators, lower the job competency standards, and reduce labor costs.

[0110] In one embodiment, traditional equipment suffers from over-printing of thin materials or under-printing of thick materials due to the fixed worktable. In this invention, the lifting and lowering of the worktable 118 is linked to the opening and closing of the screen arm, enabling dynamic self-adaptation of the pressure exerted by the screen on the substrate during printing. This avoids the risk of localized incomplete printing or screen breakage caused by unevenness or thickness of the substrate. Through this linkage mechanism, the operator only needs to adjust the height of the worktable 118 or select a preset screen opening / closing position to simultaneously trigger the matching of the screen arm opening / closing angle with the worktable 118 position. This simplifies the complex process of adjusting the screen distance, screen clearance, and worktable 118 height in traditional equipment into a single-step operation, significantly improving machine efficiency. The efficiency is improved; at the same time, seamless loading and unloading can be achieved. When printing ends, the swing mechanism 114 drives the wing plate 103 to lift up as a whole (screen arm opens and closes), forming a larger unobstructed operating space, allowing the operator to quickly pick up and put down the substrate; when printing starts, the worktable 118 is precisely raised to the preset height, and the screen arm closes synchronously, achieving zero-wait connection of the "picking up and putting down - printing" action; through the rigid cooperation of the four independently adjustable lifting support arms 119, the worktable 118 is precisely leveled, completely solving the problem of screen distance deviation caused by uneven substrate thickness or tilt of the worktable 118, avoiding the risk of local false printing, uneven ink layer or screen breakage that occurs in traditional equipment;

[0111] In one embodiment, the dragon-shaped rocker arm screen printing machine of this utility model, through biomimetic industrial design, innovatively integrates the mechanical layout of the frame 101, the receiving body component 102 and the scraping arm mechanism 106 into the shape of a "dragon head", achieving a deep integration of function and aesthetics, and boosting brand recognition and market competitiveness. The unique dragon head outline (the frame 101 is the dragon neck support structure, the receiving body component 102 forms the skull outline, and the scraping arm mechanism 106 resembles a protruding dragon jaw) breaks the stereotype of traditional screen printing equipment, enhances visual recognition, and helps enterprises establish a differentiated brand image in the high-end equipment market.

[0112] The streamlined curved surface of the dragon head shape naturally guides the operator's eye to focus on the core printing area. The arc-shaped scraper mechanism 106 reduces the feeling of oppression in the working space. Combined with the backward-tilting "dragon neck" frame 101, it provides ample operating channels and reduces operator fatigue.

[0113] Transforming cold, mechanical objects into cultural symbols aligns with the aesthetic upgrade trend of "Made in China 2025" and enhances user trust and operational enjoyment through morphological psychology, indirectly driving the growth of high-value space in equipment.

[0114] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wide-range adjustable dragon-shaped rocker arm screen printing machine, characterized in that, Includes a frame (101), on which a receiving body assembly (102) is provided, the receiving body assembly (102) includes a wing plate (103), and a steering adjustment component (104) fixed to the frame (101) is rotatably provided on the lower part of the wing plate (103). The front end of the wing plate (103) is provided with a scraper arm preset interface (105), and a scraper arm mechanism (106) is fixed on the scraper arm preset interface (105). The wing plate (103) is provided with a net arm connecting assembly (107) below the scraper arm preset interface (105), and a net arm mechanism (108) is connected to the net arm connecting assembly (107). A rearwardly extending bridging member (109) is fixed on the net arm connecting assembly (107), and a receiving body net-off mechanism (110) is provided in the middle of the wing plate member (103). The receiving body net-off mechanism (110) includes a clutch assembly (111) and a drive mechanism (112) provided on the wing plate member (103). The clutch assembly (111) and the bridging member (109) work together to control the opening and closing action between the scraping arm mechanism (106) and the net arm mechanism (108). The lower rear end of the wing plate (103) is provided with a swing docking area (113), and a swing mechanism (114) fixed on the frame (101) is docked on the swing docking area (113). The net arm mechanism (108) is provided with a worktable adjustment mechanism (116) below it. The swing mechanism (114) and the steering adjustment component (104) are linked together to control the opening and closing between the net arm mechanism (108) and the worktable adjustment mechanism (116). The worktable adjustment mechanism (116) includes a worktable (117), a lifting adjustment component (118), a dovetail slide module (119), and a worktable support (120). The worktable (117) is positioned above the lifting adjustment assembly (118), which is used for height adjustment. The lifting adjustment assembly (118) is positioned on the worktable support (120), which is supported and connected to the dovetail slide module (119). The dovetail slide module (119) includes a guide rail (121) fixed on the frame (101) and a dovetail slide piece (122) that slides on the guide rail (121). A threaded adjustment rod (123) for adjusting the height of the worktable support (120) is rotatably arranged below the worktable support (120).

2. The wide-range adjustable dragon-shaped rocker arm screen printing machine according to claim 1, characterized in that, The clutch assembly (111) includes a cam shaft (124) rotatably mounted on the wing plate (103) and a cam drive (125) fixedly mounted on the cam shaft (124), the cam drive (125) being in transmission engagement with the bridge (109); The drive mechanism (112) includes an external power source or manual operation unit for driving the clutch assembly (111) to rotate; The swing docking area (113) extends downward to form an L-shaped lever structure for the wing plate (103). The swing mechanism (114) is fixedly connected to the lower end of the swing docking area (113). The swing mechanism (114) drives the receiving body assembly (102) to swing and adjust along the steering adjustment member (104) with a force-saving lever.

3. The wide-range adjustable dragon-shaped rocker arm screen printing machine according to claim 2, characterized in that, The swing mechanism (114) includes a pneumatic push-pull swing mechanism (128), which includes a cylinder (129), a slide (130) driven by the cylinder (129), and a pull arm assembly (131) rotatably connected to the slide (130). The cylinder (129) drives the slide (130) to reciprocate in the up-down direction. One end of the pull arm assembly (131) is rotatably connected to the slide (130), and the other end of the pull arm assembly (131) is rotatably connected to the front end of the swing docking area (113). The swing docking area (113) and the steering adjustment component (104) form a lever-saving swing arm motion pair under the action of the pull arm assembly (131).

4. A wide-range adjustable dragon-shaped rocker arm screen printing machine according to claim 2, characterized in that, The swing mechanism (114) includes an electric push-pull swing mechanism (132), which includes a motor (133), a cam swing member (134) driven by the motor (133), and a cam follower (135) rotatably connected to the lower end of the swing docking area (113). The motor (133) drives the cam swing member (134) to rotate, and the cam follower (135) follows the rotation of the cam swing member (134) to drive the receiving body assembly (102) to swing. An elastic element (136) is connected between the cam swing member (134) and the cam follower (135) to tightly connect the cam swing member (134) and the cam follower (135). The swing docking area (113) and the steering adjustment element (104) form a lever-saving swing arm motion pair under the action of the cam swing member (134) and the cam follower (135).

5. A wide-range adjustable dragon-shaped rocker arm screen printing machine according to any one of claims 1-4, characterized in that, The scraper arm mechanism (106) includes a pneumatic scraper arm mechanism (137), the pneumatic scraper arm mechanism (137) includes a pneumatic module (138), the pneumatic module (138) includes a module frame (139), and the module frame (139) is fixed on the scraper arm preset interface (105) in a single-end fixed form. The module frame (139) is provided with a module slide assembly (140) and a first stroke adjustment assembly (141) for adjusting the front and rear displacement of the module slide assembly (140). A bridge plate (142) is provided below the module slide assembly (140). A print head assembly (143) is provided at the front end of the bridge plate (142). When the print head assembly (143) is in the foremost position, the bridge plate (142) extends out of the front end of the module frame (139). An upward stroke adjustment bolt (144) is fixedly provided inside the module frame (139).

6. A wide-range adjustable dragon-shaped rocker arm screen printing machine according to any one of claims 1-4, characterized in that, The scraper arm mechanism (106) includes an electric scraper arm mechanism (145), the electric scraper arm mechanism (145) includes an electric module (146), the electric module (146) includes a module frame (139), and the module frame (139) is fixed on the scraper arm preset interface (105) in a single-end fixed form. The module frame (139) is provided with a module slide assembly (140) and a second stroke adjustment assembly (147) for adjusting the front and rear displacement of the module slide assembly (140). A bridge plate (142) is provided below the module slide assembly. A print head assembly (143) is provided at the front end of the bridge plate (142). When the print head assembly (143) is in the foremost position, the bridge plate (142) extends out of the front end of the module frame (139). The second stroke adjustment assembly (147) includes two sets of stroke adjustment rods (148) and two sets of stroke adjustment components (149) disposed on the two sets of stroke adjustment rods (148). The upper part of the two sets of stroke adjustment components (149) is provided with a sensor (150) and a handle bolt (151) for fixing the stroke adjustment component (149). The handle bolt is used to adjust the stroke of the scraper arm. The handle bolt (151) passes through the electric module housing (152) and is externally positioned above the electric scraper arm.

7. A wide-range adjustable dragon-shaped rocker arm screen printing machine according to claim 5, characterized in that, The front end of the bridge plate (142) is provided with a print head support plate (153). The print head assembly (143) includes a doctor blade assembly (154), a return blade assembly (155) and a double-stroke cylinder (156) for driving the doctor blade assembly (154) and the return blade assembly (155) on the print head support plate (153). Each pair of double-stroke cylinders (156) is placed on both sides of the module frame (139).

8. A wide-range adjustable dragon-shaped rocker arm screen printing machine according to claim 7, characterized in that, The back of the receiving body assembly (102) is provided with a first elastic connecting unit (157), and the two sides of the swing docking area (113) are respectively provided with second elastic connecting units (158). One end of the first elastic connecting unit (157) is fixedly connected to the back of the receiving body assembly (102), and the other end of the first elastic connecting unit (157) is fixedly connected to the frame (101). One end of the second elastic connecting unit (158) is fixedly connected to the swing docking area (113), and the other end of the second elastic connecting unit (158) is fixedly connected to the frame (101).

9. A wide-range adjustable dragon-shaped rocker arm screen printing machine according to claim 1, characterized in that, The clutch assembly (111) includes an eccentric wheel shaft (159) rotatably mounted on the wing plate (103) and an eccentric wheel (160) fixedly mounted on the eccentric wheel shaft (159), with the eccentric wheel engaging with the lower end face of the bridge member (109) in a lifting transmission configuration. The drive mechanism (112) includes an external power source or manual operation unit for driving the eccentric wheel (160) to rotate; The bridging component (109) is provided with a sliding rod groove (162), and the lower part of the bridging component (109) is provided with an abutment block (161) that abuts against the eccentric wheel component (160). The upper end face of the abutment block (161) is formed with a boss component (163) that slides in the sliding rod groove (162). The boss component (163) is provided with a downward through-hole oiling hole (164), and the upper end face of the boss component (163) is provided with a limiting component (165). An auxiliary limiting member (166) is connected to the abutting block (161) to make the eccentric wheel (160) abut against the abutting block (161).

10. A wide-range adjustable dragon-shaped rocker arm screen printing machine according to claim 1, characterized in that, The clutch assembly (111) includes a limiting rod (167) rotatably mounted on a wing plate (103) at one end, and a tongue fastener (168) fixed on the bridging member (109) for engaging with the limiting rod (167).

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