Storage device for screen printing flexible printing stock

Abstract

The utility model discloses a storage device for a screen printing flexible printing stock. The storage device comprises a storage jig and a jacking mechanism, the storage jig comprises a jig bottom plate and a printing stock supporting plate, a plurality of positioning guide rods are fixedly installed on the periphery of the jig bottom plate, and a plurality of ejector rod through holes are formed in the middle of the jig bottom plate. A plurality of guide rod through holes corresponding to the positioning guide rods are formed in the periphery of the printing stock supporting plate, and the positioning guide rods are sleeved with the guide rod through holes respectively; a vacuum breaking groove is formed in the printing stock supporting plate; the jacking mechanism is arranged below the storage jig and comprises a plurality of ejector rods and a lifting driving assembly of the ejector rods, the ejector rods are sleeved with the corresponding ejector rod through holes respectively, the top ends of the ejector rods abut against the lower face of the printing stock supporting plate, and the lifting driving assembly pushes the printing stock supporting plate to ascend along the positioning guide rods through the ejector rods, so that the uppermost face of the printing stock stack reaches the set position. And the working reliability of negative pressure suction on the flexible printing stock is effectively improved.

Description

Technical Field

[0001] This utility model relates to a screen printing device, and more particularly to a storage device for flexible printing substrates. Background Technology

[0002] With the development of screen printing, the types of substrates being printed on are constantly expanding, and flexible substrates are increasingly emerging. For example, circuit boards made with flexible substrates typically use high-performance materials such as polyester film, polyimide (PI), or polyamide (PA). Compared to traditional rigid boards, FPCs (Flexible Printed Circuits) have flexibility and bendability, making them suitable for electronic devices and products that require bending or complex shapes. However, because flexible materials bend and stretch under external forces such as gravity, they lack the necessary rigidity to support handling. This makes it difficult to reliably apply negative pressure to stacked flexible substrates when retrieving them. Utility Model Content

[0003] To address the aforementioned drawbacks, the technical problem this utility model aims to solve is to provide a storage device for stacking and storing flexible screen-printed substrates, facilitating reliable negative pressure suction of the flexible substrates. The technical solution adopted by this utility model is a storage device for flexible screen-printed substrates, characterized by comprising a storage fixture and a lifting mechanism; the storage fixture includes a fixture base plate and a substrate tray, with several positioning guide rods fixed around the base plate, and several top rod through holes in the center of the base plate; the substrate tray has several guide rod through holes corresponding to the positioning guide rods around its perimeter, with each guide rod through hole fitting onto a positioning guide rod; a vacuum breaking groove is provided on the surface of the substrate tray; the lifting mechanism is located below the storage fixture, including several top rods and their lifting drive assembly, with each top rod fitting into a corresponding top rod through hole, the top of the top rod abutting against the bottom of the substrate tray, and the lifting drive assembly pushing the substrate tray upwards along the positioning guide rods via the top rods, so that the top of the stacked substrates reaches a set position.

[0004] The beneficial effects of this invention are as follows: several substrates are neatly stacked on a substrate tray, which is then placed on the fixture base plate along various positioning guide rods. Each positioning guide rod precisely positions the substrate tray and effectively supports the substrate stack. The lifting drive assembly pushes the substrate tray upwards smoothly along the positioning guide rods via a top rod, ensuring the top of the substrate stack reaches a set position. This allows a picking device (such as a robotic arm) to perform negative pressure suction on the top substrate and transport it to the next workstation. This process is repeated until all substrates in the stack are removed, at which point the top rod descends to its original position, and the stack is reloaded. The vacuum breaking groove effectively avoids the problem of the last substrate at the bottom of the stack being difficult to separate from the top of the substrate tray due to vacuum negative pressure. Therefore, the reliability of negative pressure suction of flexible substrates is effectively improved.

[0005] Preferably, the upper part of the storage fixture is provided with a photoelectric sensing component corresponding to the set position, and the photoelectric sensing component is communicatively connected to the lifting drive component. This ensures that the decreasing stack of printing substrates can rise to the set position for easy negative pressure adsorption each time.

[0006] Preferably, the upper part of the storage fixture is provided with an air nozzle corresponding to the set position, and the air nozzle is connected to a pressurized air source. This effectively avoids the problem that the top substrate and the next substrate are not easily separated due to vacuum negative pressure or electrostatic adsorption.

[0007] Preferably, the positioning guide rods are located at the four corners of the fixture base plate, with two positioning guide rods symmetrically distributed on both sides of each corner. Further, an air nozzle is provided on the upper part of the storage fixture corresponding to the designated position. The air nozzle is connected to a pressurized air source and is located in the space between the two positioning guide rods at the corner.

[0008] Preferably, the fixture base plate is fixedly mounted on the first connecting plate, which is fixedly mounted on the mounting base plate via a column. The first connecting plate has a push rod through hole corresponding to the push rod through hole, and the mounting base plate has a guide hole seat corresponding to the push rod through hole. A push rod seat and a second connecting plate are sequentially arranged below the mounting base plate. The second connecting plate is fixedly connected to the mounting base plate via a connecting column. The push rod seat is connected to the lifting shaft of the lifting drive assembly, and the lifting drive assembly is fixedly connected to the second connecting plate. The second connecting plate has a guide shaft seat for the lifting shaft. Further, the lifting drive assembly is an electric slide table or an electric cylinder. This ensures the smoothness and accuracy of the travel as the substrate tray rises along the positioning guide rod.

[0009] Preferably, the top of the positioning guide rod is tapered, making it more convenient to use.

[0010] Preferably, the four vacuum breaking grooves are arranged in a quadrilateral shape near each positioning guide rod. This results in a better vacuum breaking effect.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time.

[0012] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0013] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0015] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0017] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall exploded structure of the storage device (including the negative pressure adsorption and transfer mechanism);

[0019] Figure 2 This is a schematic diagram of the overall assembly structure of the storage device (including the air blowing assembly);

[0020] Figure 3 This is a schematic diagram of the storage fixture.

[0021] Figure labeling: 100-Mounting base plate, 101-Column, 102-First connecting plate, 103-Jig base plate, 104-Printing substrate tray, 105-Positioning guide rod, 106-Guide hole seat, 107-Photoelectric sensing component, 201-Connecting block, 202-Connecting column, 203-Push rod, 204-Push rod seat, 205-Lifting shaft, 206-Guide shaft seat, 207-Electric cylinder, 208-Second connecting plate, 300-Moving module, 301-Material suction cup, 302-Lifting module. Detailed Implementation

[0022] See appendix Figure 1-3 This illustrates a specific structure of the present invention. The storage device for the flexible substrate for screen printing comprises two parts: a storage fixture and a lifting mechanism. The storage fixture includes a fixture base plate 103 and a substrate support plate 104. Several positioning guide rods 105 are fixed around the fixture base plate 103. In this example, eight positioning guide rods 105 are located at the four corners of the fixture base plate 103, with two positioning guide rods 105 symmetrically distributed on both sides of each corner. This effectively supports the stack of substrates without creating upward resistance.

[0023] The jig base plate 103 has several top rod through holes in its center (the part surrounded by the positioning guide rods 105, which is only used in this utility model as a concept corresponding to "around"). The substrate tray 104 has several guide rod through holes around its perimeter corresponding to the positioning guide rods 105, with each guide rod through hole fitting onto its respective positioning guide rod 105. The substrate tray 104 has vacuum breaking grooves 109 on its surface. These vacuum breaking grooves 109 effectively prevent the bottom of the last substrate sheet from easily separating from the top of the substrate tray 104 due to vacuum negative pressure. In this example, the four vacuum breaking grooves 109 are arranged in a quadrilateral shape near the positioning guide rods 105; other embodiments may employ other distribution methods with vacuum breaking effects.

[0024] The lifting mechanism is located below the storage fixture and includes several lifting rods 203 and their lifting drive assembly. Each lifting rod 203 is respectively fitted into the corresponding lifting rod through hole. The top of the lifting rod 203 abuts against the bottom of the substrate tray 104. The lifting drive assembly pushes the substrate tray 104 along the positioning guide rod 105 to rise through the lifting rod 203, so that the top of the substrate stack reaches the set position.

[0025] In the example, a photoelectric sensor 107 is provided on the upper part of the storage fixture corresponding to the set position, and the photoelectric sensor 107 is communicatively connected to the lifting drive component. When the top of the substrate stack rises to the set position, the lifting drive component stops, ensuring that the continuously decreasing substrate stack can rise to the set position that facilitates negative pressure adsorption each time.

[0026] In the example, an air nozzle 108 is provided on the upper part of the storage fixture corresponding to the set position. The air nozzle 108 is connected to a pressurized air source (not shown in the figure, such as a pressure tank or air pump). Air is blown between the top and bottom substrates to promote their separation, effectively avoiding the problem of them being difficult to separate due to vacuum negative pressure or electrostatic adsorption. In the example, the air nozzle 108 is located in the gap between the two positioning guide rods 105 at the corner. The measured separation effect is good.

[0027] To ensure the smoothness and accuracy of the travel of the substrate tray 104 as it rises along the positioning guide rod 105, in this example, the fixture base plate 103 is fixedly mounted on the first connecting plate 102, which is fixedly mounted on the mounting base plate 100 by four uprights 101 located at the four corners. The first connecting plate 102 has a push rod through hole corresponding to the push rod through hole, and the mounting base plate 100 has a guide hole seat 106 corresponding to the push rod through hole; to facilitate the passage of the push rod 203.

[0028] A top rod seat 204 and a second connecting plate 208 are sequentially arranged below the mounting base 100. The second connecting plate 208 is fixedly connected to the mounting base 100 via a connecting post 202. The top rod seat 204 is connected to the lifting shaft 205 of the lifting drive assembly. The fixed part of the lifting drive assembly is fixedly connected to the second connecting plate 208. The second connecting plate 208 is provided with a guide shaft seat 206 for the lifting shaft 205. In this example, the lifting drive assembly uses an electric cylinder 207. The electric cylinder can achieve precise position control by adjusting the rotation angle of the motor. Other driving methods, such as electric slides or pneumatic cylinders, can also be used in other embodiments.

[0029] Using the above method, several flexible substrates are manually and neatly stacked on the substrate tray 104. The substrate tray 104 is then placed on the positioning guide rods 105 and onto the fixture base plate 103. Each positioning guide rod 105 precisely positions the substrate tray 104 and effectively supports the substrate stack. The lifting shaft 205 of the electric cylinder 207 sequentially pushes the substrate tray 104 upwards along the positioning guide rods 105 via the push rod seat 204 and the push rod 203, so that the top of the substrate stack reaches the set position. The photoelectric sensing component 107 stops the electric cylinder 207 after sensing the substrate. The moving module 300 moves the lifting module 302 and the material suction cup 301 to directly above the substrate stack. The lifting module 302 lowers the material suction cup 301 to abut against the top substrate of the substrate stack for negative pressure adsorption before transferring it to the next workstation. This process is repeated until all the substrate in the stack is removed, at which point the push rod 203 descends to its original position and is reloaded into the substrate stack.

[0030] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in detail with reference to the accompanying drawings to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is limited only to the claims and their full scope and equivalents, and not to the specific embodiments disclosed.

Claims

1. A storage device for flexible substrates used in screen printing, characterized in that, The device includes a storage fixture and a lifting mechanism. The storage fixture includes a fixture base plate and a substrate tray. Several positioning guide rods are fixed around the fixture base plate, and several push rod through holes are provided in the center of the fixture base plate. Several guide rod through holes are provided around the substrate tray corresponding to the positioning guide rods, and each guide rod through hole is respectively fitted onto the positioning guide rod. A vacuum breaking groove is provided on the top of the substrate tray. The lifting mechanism is located below the storage fixture and includes several push rods and their lifting drive assembly. Each push rod is respectively fitted into the corresponding push rod through hole, and the top of the push rod abuts against the bottom of the substrate tray. The lifting drive assembly pushes the substrate tray up along the positioning guide rods through the push rods, so that the top of the substrate stack reaches the set position.

2. The storage device for flexible screen-printed substrates as described in claim 1, characterized in that, The upper part of the storage fixture is provided with a photoelectric sensing component corresponding to the set position, and the photoelectric sensing component is communicatively connected to the lifting drive component.

3. The storage device for flexible screen-printed substrates as described in claim 1, characterized in that, The storage fixture is provided with an air nozzle at the upper part corresponding to the set position, and the air nozzle is connected to a pressurized air source.

4. The storage device for flexible screen-printed substrates as described in claim 1, characterized in that, The positioning guide rods are set at the four corners of the fixture base plate, with two positioning guide rods symmetrically distributed on both sides of each corner.

5. The storage device for flexible screen-printed substrates as described in claim 4, characterized in that, The storage fixture is provided with an air nozzle on its upper part corresponding to the set position. The air nozzle is connected to a pressure air source and is located in the space between the two positioning guide rods at the corner.

6. The storage device for flexible screen-printed substrates as described in claim 1, characterized in that, The fixture base plate is fixedly mounted on the first connecting plate, which is fixedly mounted on the mounting base plate via a column. The first connecting plate has a push rod through hole corresponding to the push rod through hole, and the mounting base plate has a guide hole seat corresponding to the push rod through hole. A push rod seat and a second connecting plate are sequentially arranged below the mounting base plate. The second connecting plate is fixedly connected to the mounting base plate via a connecting column. The push rod seat is connected to the lifting shaft of the lifting drive assembly, which is fixedly connected to the second connecting plate. The second connecting plate has a guide shaft seat for the lifting shaft. Further, the lifting drive assembly uses an electric slide table or an electric cylinder to ensure the smoothness and accuracy of the travel of the printing substrate tray as it rises along the positioning guide rod.

7. The storage device for flexible screen-printed substrates as described in claim 1, characterized in that, The top of the positioning guide rod is cone-shaped.

8. The storage device for flexible screen-printed substrates as described in claim 1, characterized in that, Four vacuum breaking grooves are arranged in a quadrilateral shape near each positioning guide rod.

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