A fully automatic screen printing machine

Abstract

A fully automatic screen printing machine includes a frame, a conveyor belt, a gripper bar, a drive unit, and a printing unit. It also includes a linkage mechanism that drives the gripper bar and the printing unit for coordinating the transfer of the workpiece. The gripper bar, drive unit, and printing unit operate sequentially. A pair of rotating units are rotatably mounted within the frame. A transmission unit drives the rotating units. The linkage mechanism connects the rotating units to the gripper bar and printing unit. A push plate is rotatably mounted within the frame; its top end engages with an annular groove via a rotating shaft, and its top end engages with a protrusion via an arc-shaped surface. An L-shaped plate is rotatably mounted within the frame, engaging with an annular groove via a rotating shaft. The top end of the L-shaped plate is driven to the printing table, and its bottom end is driven to the screen frame via a connecting rod assembly. In daily production, the transmission unit drives the two rotating units to rotate, and the linkage mechanism sequentially changes the opening and closing states of the gripper bar and printing unit.

Description

Technical Field

[0001] This invention relates to a fully automatic screen printing machine. Background Technology

[0002] A screen printing machine is a type of printing machine that uses a screen printing plate to apply printing. It is a representative printing device among stencil printing machines. Its printing plate is a crisscrossing screen made of materials such as silk. For example, in the case of a circulating paper gripper mechanism and a high-speed fully automatic magnetic printing machine (publication number CN113511006A), when the paper gripper bar is conveyed to the front end of the ring chain, the front ejector pin touches the paper gripper bar, the paper gripper bar opens and grips the paper. After gripping the paper, the paper gripper bar passes through the printing device and the magnetic control device in sequence, and is flattened on the first platform and the second platform in sequence for printing and magnetic control. Finally, the paper gripper bar is conveyed to the rear end of the ring chain, the rear ejector pin touches the paper gripper bar, the paper gripper bar opens and releases the paper, and finally the paper gripper bar continues to work in a cycle.

[0003] This embodiment can fulfill the function of the toothed bar for material circulation and loading, ensuring product productivity, but it has the following drawbacks:

[0004] The printing table is lowered by the lifting column to open the printing unit. However, the lifting column has low operating efficiency, which affects the production efficiency of the equipment. Also, if it is not opened in time, it is easy to collide with the gripper bar. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art.

[0006] This application provides a fully automatic screen printing machine, including a frame, a conveyor belt, gripper bars, a drive unit, and a printing unit, and further includes:

[0007] The linkage mechanism connects the tooth bar and the printing unit to facilitate the transfer of the upper part.

[0008] The toothed bar, drive unit, and printing unit work in sequence to realize the loading, printing, and unloading of materials.

[0009] The linkage mechanism includes:

[0010] The linkage unit is used to change the opening and closing state of the tooth bar and the printing unit;

[0011] A pair of rotating units, which drive the linkage unit to rotate;

[0012] A transmission unit, which is used to drive the rotating unit.

[0013] The rotating unit includes:

[0014] The disc body is rotatably mounted inside the frame;

[0015] The annular groove is located on the surface of the disk and is not circular.

[0016] A rotating shaft, whose transmission connection is between the transmission unit and the disc body;

[0017] The linkage unit is connected to the ring groove drive.

[0018] The transmission unit includes:

[0019] A servo motor, which is connected to one of the rotating shafts via a chain drive;

[0020] Chain 2, its transmission connects two rotating shafts.

[0021] The linkage unit includes:

[0022] The transmission frame connects the rotating unit and the toothed bar.

[0023] The linkage frame connects the rotating unit and the printing unit via a transmission mechanism.

[0024] The printing unit includes a printing table and a screen frame that are relatively movable.

[0025] Tooth racks include:

[0026] The support plate has several lower teeth fixedly installed on its side;

[0027] A fixing block, used to fix the upper tooth opening, has a spring on the side;

[0028] The movable shaft is fixed through the fixing block, and protrusions are fixed at both ends;

[0029] The protrusion is used to connect the transmission frame to the movable shaft.

[0030] The transmission frame includes:

[0031] The push plate is rotatably mounted inside the frame;

[0032] The push plate has a rotating engagement with the annular groove via a rotating shaft at its top, and a transmission engagement with the protrusion via an arc-shaped surface at its top.

[0033] The linkage frame includes:

[0034] The L-shaped plate is rotatably mounted inside the frame and rotates in conjunction with the annular groove via a rotating shaft.

[0035] The top of the L-shaped plate is connected to the printing table via a rotating shaft, and the bottom is connected to the screen frame via a connecting rod assembly.

[0036] The linkage assembly includes:

[0037] A rotating plate, which is rotatably mounted inside the frame via a connecting shaft;

[0038] The connecting rod rotatably connects the rotating plate and the L-shaped plate at both ends;

[0039] Mounting plate, which is mounted on the connecting shaft;

[0040] The mounting plate and the mesh frame are connected by an adjusting component.

[0041] Also includes:

[0042] The adjusting component is a cylinder;

[0043] The cylinder output end is rotatably connected to the mesh frame, and the bottom end is rotatably connected to the mounting plate.

[0044] The beneficial effects of this invention are as follows:

[0045] 1. The top of the L-shaped plate drives the printing platform to move up and down reciprocally via a rotating shaft, and its bottom drives the screen frame to move up and down reciprocally via a connecting rod assembly. The rotation of the L-shaped plate enables the printing table and the screen frame to move synchronously towards each other, which facilitates the loading of materials and printing.

[0046] 2. By setting the chain inside the transmission unit, the two rotating units are driven to work synchronously. The inner ring groove of the rotating unit is connected to the connecting frame and the linkage frame, which changes the opening and closing state of the gripper bar and the printing unit in sequence, so as to realize the cooperation between the gripper bar and the printing unit. At the same time, it can speed up the opening and closing speed of the printing unit, prevent the gripper bar and the printing unit from colliding, and improve the printing efficiency of the material.

[0047] 3. By adjusting the settings of the components, the distance between the printing table and the screen frame when closed can be changed, enabling the printing unit to print materials of different thicknesses and improving the practicality of the equipment. Attached Figure Description

[0048] Figure 1 This is a three-dimensional structural diagram of the fully automatic screen printing machine in the embodiments of this application;

[0049] Figure 2 This is a three-dimensional structural diagram of the driving device in the embodiments of this application;

[0050] Figure 3 This is a three-dimensional structural diagram of the linkage mechanism in the embodiments of this application;

[0051] Figure 4 This is a three-dimensional structural diagram of the linkage mechanism in the embodiments of this application;

[0052] Figure 5 This is a front view of the disk body in an embodiment of this application;

[0053] Figure 6This is a schematic diagram of the three-dimensional structure of the transmission frame in the embodiments of this application;

[0054] Figure 7 This is a schematic diagram of the three-dimensional structure of the linkage frame in the embodiments of this application;

[0055] Figure 8 This is a schematic diagram of the three-dimensional structure of the tooth row in the embodiment of this application.

[0056] Figure Labels

[0057] 1-Frame, 2-Conveyor belt, 3-Tooth bar, 31-Support plate, 32-Lower tooth, 33-Fixed block, 34-Upper tooth, 35-Moving shaft, 36-Protrusion, 37-Spring, 4-Drive device, 5-Printing unit, 51-Printing table, 52-Screen frame, 6-Linkage mechanism, 7-Rotating unit, 71-Disc body, 72-Ring groove, 73-Rotating shaft, 8-Transmission unit, 81-Servo motor, 82-Chain one, 83-Chain two, 9-Linkage unit, 91-Transmission frame, 911-Push plate, 912-Arc surface, 92-Linkage frame, 921-L-shaped plate, 922-Rotating shaft, 923-Linking rod assembly, 924-Rotating plate, 925-Connecting shaft, 926-Linking rod, 927-Mounting plate, 928-Adjusting component, 10-Cylinder. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0059] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0060] The server provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0061] Example 1:

[0062] like Figures 1 to 2As shown, this application provides a fully automatic screen printing machine, including a frame 1, a conveyor belt 2, a gripper bar 3, a drive device 4, a printing unit 5, and a linkage mechanism 6, which drives the gripper bar 3 and the printing unit 5 to cooperate in transporting the workpiece; wherein the gripper bar 3, the drive device 4, and the printing unit 5 work in sequence.

[0063] In this embodiment of the application, due to the above-described structure, the drive device 4 includes a drive motor, a first connecting shaft, a second connecting shaft, a third chain, a belt, a ring chain, a drive wheel, and a half gear plate.

[0064] The drive motor is fixedly installed inside the frame 1. The drive wheels are symmetrically and movably installed on the connecting shaft 2 and can be rotatably installed inside the frame 1. The half gear plates are symmetrically and fixedly installed on the inner side of the tail end of the frame 1. The ring chain is rotatably installed on the adjacent drive wheels and half gear plates. The drive motor is connected to the connecting shaft 1 through the chain 3. The connecting shaft 1 is connected to the connecting shaft 2 through the belt drive. The toothed bar 3 is connected to the ring chain through the mounting blocks set at both ends.

[0065] The drive motor drives the first connecting shaft to rotate via the third chain. The first connecting shaft drives the second connecting shaft to rotate via the belt. The second connecting shaft drives the drive wheel to rotate. The drive wheel drives the ring chain to rotate on the drive wheel and the half gear plate. At the same time, the ring chain drives the toothed bar 3 to move, realizing the transfer and loading of materials.

[0066] Several toothed bars 3 on the ring chain are used to achieve uninterrupted feeding of materials.

[0067] The toothed bar 3 picks up the material at the loading position, and then the drive device 4 drives the toothed bar 3 to move towards the printing unit 5, where the printing unit 5 prints the material. The conveyor belt 2 is rotatably mounted on the side of the printing unit 5. The toothed bar 3 is opened by the pins at the end of the conveyor belt 2, allowing the material to fall onto the conveyor belt 2, which then transports the material for unloading. Through the linkage mechanism 6, the toothed bar 3 and the printing unit 5 are opened and closed sequentially, realizing the unloading and loading of materials and printing.

[0068] Example 2:

[0069] like Figures 1 to 8 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a linkage unit 9, which is used to change the opening and closing state of the tooth bar 3 and the printing unit 5; a pair of rotating units 7, which are used to drive the linkage unit 9 to rotate; and a transmission unit 8, which is used to drive the rotating units 7.

[0070] Furthermore, the disc body 71 is rotatably mounted inside the frame 1; the annular groove 72 is provided on the surface of the disc body 71 and is not circular; the rotating shaft 73 is drivingly connected to the transmission unit 8 and the disc body 71; wherein, the linkage unit 9 is drivingly connected to the annular groove 72.

[0071] Furthermore, the servo motor 81 is connected to one of the rotating shafts 73 via a first chain 82; the second chain 83 is connected to both rotating shafts 73 via a second chain.

[0072] Furthermore, the transmission frame 91 is connected to the rotating unit 7 and the toothed rack 3; the linkage frame 92 is connected to the rotating unit 7 and the printing unit 5; wherein the printing unit 5 includes a printing table 51 and a screen frame 52 that are relatively movably arranged.

[0073] Furthermore, the support plate 31 has several lower teeth 32 fixedly installed on its side; the fixing block 33 is used to fix the upper teeth 34, and the side is provided with springs 37; the movable shaft 35 is fixedly inserted through the fixing block 33, and both ends are fixedly provided with protrusions 36; wherein, the protrusions 36 are used to make the transmission frame 91 and the movable shaft 35 drively connected.

[0074] Furthermore, the push plate 911 is rotatably mounted inside the frame 1; wherein, the top end of the push plate 911 is rotatably engaged with the annular groove 72 via a rotating shaft, and the top end is engaged with the protrusion 36 via an arc-shaped surface 912.

[0075] Furthermore, the L-shaped plate 921 is rotatably mounted in the frame 1 and rotates in conjunction with the annular groove 72 via a rotating shaft; wherein, the top end of the L-shaped plate 921 is connected to the printing table 51 via a rotating shaft 922, and the bottom end is connected to the screen frame 52 via a connecting rod assembly 923.

[0076] Furthermore, a rotating plate 924 is rotatably mounted inside the frame 1 via a connecting shaft 925; a connecting rod 926 is rotatably connected at both ends to the rotating plate 924 and the L-shaped plate 921; and a mounting plate 927 is mounted on the connecting shaft 925; wherein the mounting plate 927 is rotatably connected to the mesh frame 52 via an adjusting component 928.

[0077] In this embodiment of the application, due to the above-described structure, the rotating unit 7 includes a disk body 71, a rotating shaft 73, and an annular groove 72 disposed on the surface of the disk body 71; the transmission unit 8 includes a servo motor 81, a first chain 82, and a second chain 83; the rotating unit 7 is provided in two places, with the output end of the servo motor 81 and one of the rotating shafts 73 being connected by the first chain 82, and the two rotating shafts 73 being connected by the second chain 83. The arrangement of the first chain 82 and the second chain 83 enables the rotating shafts 73 to rotate synchronously, thereby driving the rotating unit 7 to rotate synchronously; the two rotating units 7 are respectively connected to the transmission frame 91 and the linkage frame 92, and the rotation of the rotating units 7 drives the transmission frame 91 and the linkage frame 92 to rotate synchronously; the transmission frame 91 and the linkage frame 92 are respectively connected to the tooth rack 3 and the printing unit 5, and the rotation of the transmission frame 91 and the linkage frame 92 enables the opening and closing of the tooth rack 3 and the printing unit 5, thereby realizing the loading of materials and printing.

[0078] The transmission frame 91 and the linkage frame 92 work together through a rotating shaft and annular groove 72, and a roller is rotatably mounted on the top of the rotating shaft to reduce the friction between the rotating shaft and annular groove 72.

[0079] Several lower jaw openings 32 are provided and fixedly installed on the side of the support plate 31. Several upper jaw openings 34 are provided and rotatably installed inside the support plate 31, located above the lower jaw openings 32, corresponding one-to-one with the lower jaw openings 32. The upper jaw openings 34 are arc-shaped in the middle and flat at both ends to facilitate the installation of the upper jaw openings 34. At the same time, the tops of the upper jaw openings 34 and the lower jaw openings 32 are slightly wider to increase the friction with the material and facilitate the gripping of the material. One end of the fixing block 33 extends outward to fix the spring 37. The two ends of the spring 37 are fixedly connected to the fixing block 33 and the support plate 31.

[0080] The disc 71, rotatably connected to the push plate 911, drives the push plate 911 to rotate counterclockwise within the frame 1 via a rotating shaft. When the top of the push plate 911 reaches its apex, the lowest point of the arc surface 912 abuts against the protrusion 36. Subsequently, with the continued rotation of the push plate 911, the protrusion 36 slides on the arc surface 912, while the push plate 911 pushes the protrusion 36 upward. The movement of the protrusion 36 drives the movable shaft 35 to rotate, which in turn drives the fixed block 33 to rotate. 33 drives the upper tooth opening 34 to rotate, and at the same time squeezes the spring 37 set on the side. The spring 37 deforms, and at this time the tooth opening on the tooth bar 3 is opened, and the end of the material is conveyed between the upper tooth opening 34 and the lower tooth opening 32. After the protrusion 36 finishes sliding on the arc surface 912, the protrusion 36 and the upper tooth opening 34 lose resistance, the spring 37 pushes the fixing block 33 back to its original position, and the fixing block 33 drives the upper tooth opening 34 and the lower tooth opening 32 to close, and fixes and clamps the material.

[0081] After the toothed bar 3 picks up the material, the drive device 4 drives the toothed bar 3 to move closer to the printing unit 5.

[0082] Several vertical sliding devices are provided between the printing table 51, the screen frame 52 and the frame 1, so that the movement of the printing table 51 and the screen frame is a vertical reciprocating motion. The disc body 71, which is connected to the L-shaped plate 921, drives the L-shaped plate 921 to rotate counterclockwise in the frame 1. Its top end drives the printing table 51 to rotate counterclockwise through the rotating shaft 922, that is, the printing table 51 moves downward. At the same time, the bottom end of the L-shaped plate 921 drives the connecting shaft 925 to rotate counterclockwise through the connecting rod 926 and the rotating plate 924. The connecting shaft 925 drives the mounting plate 927 to rotate. The top end of the mounting plate 927 is located on the side of the connecting shaft 925 away from the disc body 71. When the mounting plate 927 rotates, its top end gradually rises, driving the screen frame 52 to move upward. At this time, the printing unit 5 is opened and the gripper bar 3 moves between the printing table 51 and the screen frame 52.

[0083] Since the annular groove 72 on the surface of the disc 71 is an eccentric non-circular design, when the rotating shaft rotates to a certain position in the annular groove 72, the annular groove 72 pushes the L-shaped plate 921 to rotate clockwise through the rotating shaft. Similarly, the printing table 51 and the screen frame 52 can move closer to each other, which facilitates the printing unit 5 to print materials.

[0084] After printing is completed, the printing unit 5 is opened again, and the drive device 4 drives the gripper bar 3 to move away from the printing unit 5. At the same time, the adjacent gripper bar 3 is conveyed into the printing unit 5 for printing.

[0085] The drive unit 4 drives the tooth bar 3 to move to the tail end of the conveyor belt 2. The pin fixed at the tail end collides with the protrusion 36 on the tooth bar 3, pushing the protrusion 36 upward. At the same time, the protrusion 36 drives the movable shaft 35 and the upper tooth 34 to rotate, causing the material to detach from the tooth bar 3 and fall onto the conveyor belt 2. The spring 37 drives the upper tooth 34 back to its original position, and the conveyor belt 2 transfers the material to the bottom.

[0086] The drive unit 4 drives the separated tooth bar 3 back to the loading point for loading, realizing the cyclic loading of the equipment.

[0087] Example 3:

[0088] like Figures 1 to 7 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the adjusting component 928 is a cylinder 10; wherein, the output end of the cylinder 10 is rotatably connected to the mesh frame 52, and the bottom end is rotatably connected to the mounting plate 927.

[0089] In this embodiment of the application, due to the above-described structure, a limiting unit is fixedly provided at the bottom of the cylinder 10 to prevent the cylinder 10 from exceeding its working range; the output end of the cylinder 10 is rotatably connected to the mesh frame 52, and the mesh frame 52 can be pushed up or down by the output end of the cylinder 10.

[0090] The cylinder 10 drives the screen frame 52 to move upward. When the printing unit 5 is closed, the distance between the printing table 51 and the screen frame 52 increases, allowing for the printing of materials with greater thickness. The cylinder 10 drives the screen frame 52 to move downward. When the printing unit 5 is closed, the distance between the printing table 51 and the screen frame 52 decreases, allowing for the printing of materials with less thickness. By setting the cylinder 10, the height of the screen frame 52 relative to the printing table 51 is changed, thereby changing the distance between the screen frame 52 and the printing table 51 when closed. This facilitates the printing unit 5 in printing materials of different thicknesses, improves the practicality of the equipment, and enhances the printing effect of the printing unit 5 on the materials.

[0091] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order, depending on the functions involved. For example, the described methods may be performed in an order not used in the description, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0092] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A fully automatic screen printing machine, comprising a frame (1), a conveyor belt (2), a gripper bar (3), a drive unit (4), and a printing unit (5), characterized in that, Also includes: The linkage mechanism (6) is connected to the tooth bar (3) and the printing unit (5) for cooperating in the transmission of the upper part; The toothed bar (3), the driving device (4), and the printing unit (5) work sequentially to realize the loading, printing, and unloading of materials. The linkage mechanism (6) includes: Linkage unit (9), which is used to change the opening and closing state of the tooth bar (3) and the printing unit (5); A pair of rotating units (7) are used to drive the linkage unit (9) to rotate; A transmission unit (8) for driving the rotating unit (7), the rotating unit (7) comprising: The disk body (71) is rotatably mounted inside the frame (1); An annular groove (72) is provided on the surface of the disc body (71) and is not circular; A rotating shaft (73) is used to drive the transmission unit (8) and the disc (71); The linkage unit (9) is connected to the annular groove (72) in a transmission manner, and the linkage unit (9) includes: The transmission frame (91) is connected to the rotating unit (7) and the tooth rack (3) in a transmission manner; The linkage frame (92) is a transmission connection between the rotating unit (7) and the printing unit (5); The printing unit (5) includes a printing table (51) and a screen frame (52) that are movably arranged relative to each other, and the gripper bar (3) includes: The support plate (31) has several lower teeth (32) fixedly installed on its side; A fixing block (33) is used to fix the upper tooth opening (34) and a spring (37) is provided on the side; The movable shaft (35) is fixedly inserted through the fixed block (33), and protrusions (36) are fixedly provided at both ends; The protrusion (36) is used to drive the transmission frame (91) and the movable shaft (35).

2. The fully automatic screen printing machine according to claim 1, characterized in that, The transmission frame (91) includes: Push plate (911), which is rotatably mounted in the frame (1); The top end of the push plate (911) is rotatably engaged with the annular groove (72) via a rotating shaft, and the top end is driven by the protrusion (36) via an arc-shaped surface (912).

3. The fully automatic screen printing machine according to claim 1, characterized in that, The linkage (92) includes: The L-shaped plate (921) is rotatably mounted in the frame (1) and rotates with the annular groove (72) via a rotating shaft; The top end of the L-shaped plate (921) is connected to the printing table (51) via a rotating shaft (922), and the bottom end is connected to the screen frame (52) via a connecting rod assembly (923).

4. The fully automatic screen printing machine according to claim 3, characterized in that, The link assembly (923) includes: A rotating plate (924) is rotatably mounted inside the frame (1) via a connecting shaft (925); A connecting rod (926) rotatably connects the rotating plate (924) and the L-shaped plate (921) at both ends; Mounting plate (927), which is mounted on the connecting shaft (925); The mounting plate (927) and the mesh frame (52) are rotatably connected by an adjusting component (928).

5. The fully automatic screen printing machine according to claim 4, characterized in that: The adjusting component (928) is a cylinder (10); The cylinder (10) is rotatably connected to the mesh frame (52) at its output end and to the mounting plate (927) at its bottom end.

6. A printing method suitable for the fully automatic screen printing machine of claim 1, characterized in that, Includes the following steps: S1. The rotating unit (7) drives the transmission frame (91) to rotate, opening the upper tooth opening (34) on the tooth bar (3); S2. A single piece of material is moved into the tooth bar (3), and the spring (37) drives the upper tooth (34) to close and clamp the material. S3, the drive unit (4) drives the tooth bar (3) to move towards the printing unit (5); S4. The rotating unit (7) drives the linkage frame (92) to rotate, which in turn drives the printing table (51) and the screen frame (52) to move back and forth in both directions, so as to realize the loading of materials.

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