Screen printing machine and feeding assembly for printing of screen printing machine
By integrating pneumatic lifting and feeding, pneumatic lifting and suction, flipping roller pressing and unloading, and air jet separation technologies, the problem of simultaneous adsorption of multiple printing substrates has been solved, achieving efficient and accurate substrate feeding and improving printing efficiency and product quality.
Patent Information
- Application Number
- CN202520210593.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-11
AI Technical Summary
Existing methods of feeding printing substrates can easily lead to multiple substrates being absorbed at the same time, resulting in overlapping, printing losses, and a decline in product quality.
By employing pneumatic lifting feeding, pneumatic lifting and suction feeding, flipping roller pressing unloading and air separation technologies, and through the integrated design of feeding components, picking components, unloading components and air pipes, efficient and accurate feeding of substrates is achieved.
This effectively prevents multiple substrates from being adsorbed at the same time, ensuring that only one substrate is removed at a time, thus improving printing efficiency and product quality.
Smart Images
Figure CN223737249U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of screen printing equipment technology, and in particular to a screen printing machine and its feeding assembly. Background Technology
[0002] In the printing industry, the feeding process of printing substrates is one of the key links affecting printing quality and efficiency. Traditional suction cup feeding methods often result in multiple substrates being suctioned at the same time during the feeding process because the printing substrates are usually thin. This leads to the substrates overlapping during the subsequent printing process, causing printing losses and a decline in product quality. Therefore, there is an urgent need for a feeding component that can effectively separate and accurately feed printing substrates. Utility Model Content
[0003] The problem this application aims to solve is that existing printing substrates mainly use suction cup feeding methods. Since printing substrates are usually thin, multiple substrates are easily suctioned at the same time during material handling, resulting in overlapping between substrates during subsequent printing, causing printing losses and a decline in product quality.
[0004] To solve the above-mentioned technical problems, this application provides a printing feeding assembly, including a frame. A feeding component is arranged on one side of the upper part of the frame, which uses pneumatic lifting to supply printing substrate and maintain the picking height. A picking component is arranged on the other side of the upper part of the frame, which uses pneumatic lifting and suction to pick up the substrate and vertical shaking to separate multiple substrates. An unloading component is arranged on one side of the upper part of the frame, adjacent to the picking component, which uses a flipping roller pressing method to unload the substrate. A conveyor belt is arranged on one side of the frame below the unloading component. An air pipe is arranged on one side of the frame, which uses air jet to increase the separation speed between multiple substrates.
[0005] Because the feeding assembly of this application is designed with a feeding component, a picking component, a unloading component, and an air pipe, it can achieve efficient and accurate feeding of printing substrates by integrating pneumatic lifting feeding, pneumatic lifting and suction picking, flipping roller unloading, and air separation technologies. At the same time, it avoids multiple substrates adhering together, solving the problem that the existing technology mainly uses suction cup feeding for printing substrates. Since printing substrates are usually thin, multiple substrates are easily adsorbed at the same time during picking, resulting in overlapping between substrates in the subsequent printing process, causing printing loss and product quality degradation. Attached Figure Description
[0006] Figure 1 This is a three-dimensional structural diagram of an embodiment.
[0007] Figure 2 This is a front view structural diagram of an embodiment.
[0008] Figure 3This is a top view of the structure of an embodiment.
[0009] Figure 4 This is a three-dimensional structural diagram of the feeding component.
[0010] Figure 5 This is a three-dimensional structural diagram of the material being picked up.
[0011] Figure 6 This is a three-dimensional structural diagram of the unloading component.
[0012] In the diagram: 1. Conveyor belt; 2. Printing assembly; 3. Material handling component; 4. Material unloading component; 5. Air pipe; 6. Material feeding component; 7. Frame; 8. Pallet; 9. Guide rod; 10. Guide sleeve; 11. First cylinder; 12. Frame plate; 13. Third cylinder; 14. Second cylinder; 15. Cross brace; 16. Hanger; 17. Suction cup; 18. Support rod; 19. Movable arm; 20. Pressure roller; 21. Fixed arm; 22. Fourth cylinder; 23. Swing block. Detailed Implementation
[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example
[0014] This application relates to a screen printing machine and its feeding assembly for printing, such as... Figure 1-6As shown, the feeding assembly includes a frame 7 that provides a stable mounting base for the entire assembly. A feeding component 6 is located on one side of the upper part of the frame 7, employing a pneumatic lifting mechanism to supply the printing substrate. When feeding is required, the pneumatic lifting mechanism stacks the substrates, placing the top layer in a ready-to-receive position. As retrieving progresses, the substrate height gradually decreases, and the pneumatic lifting mechanism rises accordingly to ensure the substrate remains in a suitable retrieving position. A retrieving component 3 is located on the other side of the upper part of the frame 7, using pneumatic lifting and suction to retrieve the substrate. The retrieving component 3 also includes a vertical shaking function; when the suction cup 17 adheres to the substrate, a slight vertical shaking effectively... To prevent multiple substrates from adsorbing together and ensure that only one substrate is taken at a time, the unloading component 4 is also arranged on one side of the upper part of the frame 7, adjacent to the picking component 3. It uses a flipping roller pressing method to unload the substrate. When the picking component 3 transports the substrate to the unloading position, the flipping roller pressing mechanism flips the substrate and rolls it to the predetermined position to prepare for subsequent printing operations. The conveyor belt 1 is arranged on one side of the frame 7 to facilitate the transport of the unloaded printing substrate to the printing position, realizing the automated flow of the substrate. The air pipe 5 is arranged on one side of the frame 7 and uses an air jet method to separate the substrate. Before picking up the substrate, the air pipe 5 sprays airflow into the substrate stack to further improve the separation speed between the substrates and ensure that the picking component 3 can accurately pick up a single substrate.
[0015] The feeding component 6 includes a pallet 8, a first cylinder 11, a guide rod 9, and a guide sleeve 10. The pallet 8 is horizontally arranged on the upper part of the frame 7, serving as a support platform for the substrate. The surface of the pallet 8 is flat to ensure that the substrate can be stacked evenly and to avoid misalignment or deformation caused by uneven surfaces. The size and shape of the pallet 8 are determined according to the specifications of the printing press and the size of the substrate to ensure the accuracy and adaptability of the feeding. The first cylinder 11 is arranged inside the frame 7 and connected to the pallet 8. The first cylinder 11 uses air pressure to push the pallet 8 to perform a vertical reciprocating motion, thereby realizing the substrate feeding operation. The stroke and thrust of the first cylinder 11 can be adjusted according to actual needs to ensure that the substrate can be raised smoothly and accurately to the picking position. The guide rods 9 are evenly and vertically arranged around the pallet 8 as a guide device for the movement of the pallet 8. The number and position of the guide rods 9 are determined according to the size and weight of the pallet 8 to ensure the stability and accuracy of the pallet 8 during movement. The guide sleeve 10 is arranged on the upper part of the frame 7 to cooperate with the guide rods 9 to slide vertically back and forth. The fit gap between the guide sleeve 10 and the guide rod 9 is moderate, which not only ensures the smooth movement of the pallet 8, but also avoids shaking or deviation caused by excessive gap.
[0016] During the feeding process, after receiving the control signal, the first cylinder 11 generates air pressure to push the pallet 8 to move vertically upward along the guide rod 9. As the pallet 8 rises, the substrate on it gradually approaches the picking position. When the pallet 8 rises to the predetermined height, the picking component 3 starts to work and removes the top layer of substrate through pneumatic lifting and suction. Subsequently, the first cylinder 11 increases the air pressure, and the pallet 8 moves vertically upward along the guide rod 9 under the action of gravity so that the subsequent picking position remains at the same height.
[0017] The material handling component 3 includes a frame plate 12, a second cylinder 14, a third cylinder 13, a cross brace 15, a hanging bracket 16, and a suction cup 17. The frame plate 12 is fixedly arranged on the upper part of the frame 7, serving as the basic support structure for the material handling component 3. The frame plate 12 has a stable structure and can withstand various forces and vibrations generated during the material handling process. The second cylinder 14 is arranged in the middle of the width direction on the upper part of the frame plate 12, providing horizontal pushing force. When material handling is required, the second cylinder 14 is activated, pushing the third cylinder 13 and its connected components to move horizontally above the substrate. The third cylinder 13 is arranged at the end of the second cylinder 14, providing vertical pushing force. The telescopic movement of the third cylinder 13 allows the suction cup 17 to descend vertically to approach the substrate, and after material handling, it rises vertically to carry the substrate away from the feeding position. The cross brace 15 is arranged on the upper part of the frame 7. The end of the third cylinder 13 provides horizontal support. The structural design of the cross brace 15 ensures its stability when subjected to vertical forces, providing reliable support for the hanger 16 and suction cup 17. The hanger 16 is symmetrically arranged on the upper part of the cross brace 15, providing vertical support. The design of the hanger 16 allows the suction cup 17 to be arranged vertically and stably on its upper part, while also facilitating the adjustment of the position and angle of the suction cup 17. The suction cup 17 is vertically arranged on the upper part of the hanger 16 and is used to pick up the substrate. The number and arrangement of the suction cups 17 can be adjusted according to the size and shape of the substrate to ensure stability and accuracy during the material picking process. The suction cup 17 generates suction through air pressure, tightly adhering the substrate to its surface, and then rises vertically under the push of the third cylinder 13 to complete the material picking operation.
[0018] During the material handling process, the second cylinder 14 is first activated, pushing the third cylinder 13 and its connected cross brace 15, bracket 16, and suction cup 17 to move horizontally above the substrate. Then, the third cylinder 13 is activated, causing the suction cup 17 to descend vertically and approach the substrate. When the suction cup 17 contacts the substrate, the air pressure inside the suction cup 17 decreases, generating suction to firmly adhere the substrate to its surface. Next, the third cylinder 13 is activated again, causing the suction cup 17 to rise vertically and carry the substrate away from the feeding position. Finally, the second cylinder 14 is activated, moving the removed substrate horizontally between the unloading component 4 and the conveyor belt 1, ready for the next operation. To avoid multiple substrates being adsorbed at the same time, the material handling component 3 is also designed with a vertical shaking function. During the adsorption of the substrate by the suction cup 17, the extension and retraction of the third cylinder 13 can be controlled to make the suction cup 17 vibrate slightly in the vertical direction, thereby effectively preventing multiple substrates from adsorbing together.
[0019] The unloading component 4 includes a support rod 18, a pressure roller 20, support arms (movable arm 19, fixed arm 21), a fourth cylinder 22, and a swing block 23. The support rod 18 is horizontally positioned between the frames 7 and can rotate freely. As the main support structure of the unloading component 4, the support rod 18 bears the weight of the pressure roller 20 and support arms, as well as the force generated during the unloading process. The support arms are spaced apart and symmetrically arranged on the upper part of the support rod 18, and are divided into movable arms 19 and fixed arms 21. The fixed arms 21 are fixedly arranged on the upper part of the support rod 18 and can rotate with the support rod 18. The movable arms 19 are arranged at the end of the fixed arms 21 and are rotatably connected to the fixed arms 21, so that the movable arms 19 are relative to the fixed arms 21. The fixed arm 21 has a certain degree of freedom. The pressure roller 20 is arranged at the end of the movable arm 19 and can rotate. The design of the pressure roller 20 allows it to generate rolling friction when in contact with the substrate, reducing wear on the substrate. The fourth cylinder 22 is arranged on the outside of the frame 7 and is used to drive the support rod 18 to swing. By controlling the magnitude and direction of the air pressure, the fourth cylinder 22 can precisely control the rotation angle and speed of the support rod 18. The swing block 23 is arranged at the end of the fourth cylinder 22 and connected to the support rod 18. The swing block 23 serves as a transmission component between the fourth cylinder 22 and the support rod 18, converting the linear motion of the fourth cylinder 22 into the rotational motion of the support rod 18.
[0020] During the unloading process, the fourth cylinder 22 is activated first, driving the swing block 23 to move. During the movement, the swing block 23 drives the support rod 18 to rotate, which in turn drives the fixed arm 21 to rotate synchronously. Since the movable arm 19 is rotatably connected to the fixed arm 21, and the end of the movable arm 19 is equipped with a pressure roller 20, when the fixed arm 21 rotates, the movable arm 19 will drive the pressure roller 20 to perform a lifting and lowering operation. When the pressure roller 20 descends to the position of contacting the substrate, the pressure roller 20, under its own weight and the push of the fourth cylinder 22, presses down on the substrate, stably unloading the substrate onto the conveyor belt 1. At the same time, since the movable arm 19 is designed with a certain degree of freedom, it can avoid the pressure roller 20 from applying excessive pressure to the substrate on the upper part of the conveyor belt 1, thus preventing wear or jamming. After unloading is completed, the fourth cylinder 22 is activated in reverse, driving the swing block 23 to move in reverse, driving the support rod 18 to rotate in reverse, thereby causing the pressure roller 20 to rise away from the substrate, preparing for the next unloading operation.
[0021] The screen printing machine includes a feeding component and a printing component 2. The feeding component is used for feeding the substrate to be printed, and the printing component 2 is used to drive the squeegee to perform squeegee printing on the substrate on the upper part of the conveyor belt 1.
[0022] In operation, the pallet 8 in the feeding unit 6 is initially positioned horizontally on the upper part of the frame 7, with the substrate to be printed evenly stacked on it. When a feeding signal is received, the first cylinder 11 is activated, pushing the pallet 8 vertically upward along the guide rod 9 to lift the uppermost substrate to the picking position. Simultaneously with the feeding unit 6 lifting the substrate to the picking position, the picking unit 3 begins operation. The second cylinder 14 is activated, pushing the third cylinder 13 and its connected cross brace 15, hanger 16, and suction cup 17 horizontally to above the substrate. The third cylinder 13 is activated, causing the suction cup 17 to descend vertically towards the substrate. When the suction cup 17 contacts the substrate, the air pressure inside the suction cup 17 decreases, generating suction to firmly adhere the substrate to its surface. Subsequently, the third cylinder 13 is activated again, causing the suction cup 17 to descend vertically towards the substrate. The material rises vertically, carrying the substrate away from the feeding position. The second cylinder 14 is activated again, moving the removed substrate horizontally to above the unloading component 4 or the conveyor belt 1. When the picking component 3 moves the substrate above the unloading component 4, the unloading component 4 begins to work. The fourth cylinder 22 is activated, driving the swing block 23 to move and causing the support rod 18 to rotate. When the support rod 18 rotates, the fixed arm 21 rotates synchronously, and the movable arm 19 drives the pressure roller 20 to descend. When the pressure roller 20 descends to the position in contact with the substrate, it presses down on the substrate, stably unloading the substrate onto the designated position or the conveyor belt 1. After unloading is completed, the fourth cylinder 22 is activated in the reverse direction, driving the swing block 23 to move in the reverse direction and causing the support rod 18 to rotate in the reverse direction, causing the pressure roller 20 to rise away from the substrate, preparing for the next unloading operation.
[0023] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0024] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0025] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A feeding assembly for printing, comprising a frame (7), characterized in that: The upper side of the frame (7) is provided with a feeding device (6) for printing substrate supply operation by pneumatic lifting mode and maintaining the height of the material taking, the other side of the upper part of the frame (7) is provided with a taking device (3) for taking operation and vertical shaking of the substrate to separate multiple substrates by pneumatic lifting and suction mode, the side of the frame (7) is provided with a discharging device (4) adjacent to the taking device (3) for discharging operation of the substrate by turnover roller pressing mode, the side of the frame (7) is provided with a conveying belt (1) below the discharging device (4), and the side of the frame (7) is provided with an air pipe (5) for improving the separation speed between multiple substrates by air jet mode.
2. The loading assembly for printing according to claim 1, wherein: The feeding device (6) comprises a supporting plate (8), a first air cylinder (11), a guide rod (9) and a guide sleeve (10), the supporting plate (8) is horizontally arranged on the upper part of the frame (7), the first air cylinder (11) is arranged inside the frame (7) and connected with the supporting plate (8), the guide rods (9) are uniformly and vertically arranged around the supporting plate (8), and the guide sleeve (10) is arranged on the upper part of the frame (7) and used for vertical reciprocating sliding with the guide rods (9).
3. The loading assembly for printing according to claim 1, wherein: The taking device (3) comprises a frame plate (12), a second air cylinder (14), a third air cylinder (13) and a cross brace (15), the frame plate (12) is fixedly arranged on the upper part of the frame (7), the second air cylinder (14) is arranged at the central position of the upper part of the frame plate (12) in the width direction, the third air cylinder (13) is arranged at the end of the second air cylinder (14), and the cross brace (15) is arranged at the end of the third air cylinder (13) and plays a horizontal supporting role.
4. The loading assembly for printing according to claim 3, wherein: The taking device (3) comprises a hanging frame (16) and a suction disc (17), the hanging frames (16) are symmetrically arranged on the upper part of the cross brace (15) and play a vertical supporting role, and the suction disc (17) is vertically arranged on the upper part of the hanging frame (16) and used for sucking the substrate.
5. The loading assembly for printing according to claim 1, wherein: The discharging device (4) comprises a supporting rod (18) and a supporting arm, the supporting rod (18) is transversely arranged between the frames (7), the supporting arms are arranged on the upper part of the supporting rod (18) in a spaced and symmetrical manner, the supporting arm is divided into a movable arm (19) and a fixed arm (21), the fixed arm (21) is fixedly arranged on the upper part of the supporting rod (18) and can rotate with the supporting rod (18), and the movable arm (19) is arranged at the end of the fixed arm (21) and rotationally connected with the fixed arm (21).
6. The loading assembly for printing according to claim 5, wherein: The discharging device (4) comprises a pressing wheel (20), a fourth air cylinder (22) and a swing block (23), the pressing wheel (20) is arranged at the end of the movable arm (19) and can rotate, the fourth air cylinder (22) is arranged outside the frame (7) and used for driving the supporting rod (18) to swing, and the swing block (23) is arranged at the end of the fourth air cylinder (22) and connected with the supporting rod (18).
7. A screen printing machine having the printing feed assembly of any one of claims 1 to 6, characterized in that: The printing assembly (2) is used for driving the doctor blade to perform squeegee printing operation on the upper part of the conveying belt (1).