A turnover mechanism of a screen coater

Abstract

The utility model discloses a kind of turnover mechanism of screen coater, belong to screen coater technical field, including two support frames, the inner side of two The support frame is respectively rotationally connected with rotating lever. In the utility model, the clamping seat is driven by the thread cooperation between two-way screw rod and two clamping seats, the screen is fixed in the middle part of transverse, so that the both ends of screen are inserted into the clamping groove on two clamping seats, and two screw rods are driven by two double-shaft motors respectively, the clamping plate in the clamping groove inner cavity is driven by the cooperation between screw rod and moving seat to approach each other, the screen is fixed in the middle part of up-down direction using clamping plate, and the screen is fixed in the middle part of front-back direction using the cooperation of second electric push rod and clamping plate, so that position does not change after screen turnover, ensure that scraper can smoothly coat screen, need not adjust the area of scraper coating, and good practicability.

Description

Technical Field

[0001] This utility model relates to the field of screen coating machine technology, and more specifically, to a flipping mechanism for a screen coating machine. Background Technology

[0002] A screen coating machine is a device commonly used for coating the surface of various flat materials. It is mainly used in the printing and coating fields. Its working principle is to control the coating amount and coating uniformity by using the holes of the screen and the pressure of the coating blade.

[0003] A search revealed that utility model patent CN222490822U discloses a flipping mechanism for a screen coating machine, comprising two support frames. Rotary rods are rotatably connected to the inner sides of both support frames. A rotating plate is fixedly connected to one end of each of the two rotating rods. A sliding rod is fixedly sleeved between the two rotating plates. A bidirectional lead screw is rotatably connected between the two rotating plates. Clamping boxes are threaded onto the outer sides of both ends of the bidirectional lead screw. The top of each clamping box is movably sleeved with the sliding rod. In this patent, a second motor drives the bidirectional lead screw to rotate. The distance between the two clamping boxes can be arbitrarily adjusted through the threaded engagement between the bidirectional lead screw and the clamping boxes, thus ensuring that screens of different widths can be clamped and fixed. Furthermore, a first motor drives the rotating rods, rotating plates, clamping boxes, and screen to rotate, thereby flipping the screen. However, the aforementioned patents have the following shortcomings: it is inconvenient to install the screen in the middle of the clamping groove in the vertical direction; after the squeegee has coated one side of the screen, the coating position of the squeegee needs to be adjusted after flipping it 180 degrees, which is not very practical. To address this, we have proposed a flipping mechanism for a screen coating machine. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a flipping mechanism for a screen coating machine.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A flipping mechanism for a screen coating machine includes two support frames. Rotary rods are rotatably connected to the inner sides of each support frame. Rotary plates are fixedly connected to the ends of each of the two rotating rods. A sliding rod is fixedly sleeved between the two rotating plates. A bidirectional lead screw is rotatably connected between the two rotating plates. Clamping seats are threaded onto the outer sides of both ends of the bidirectional lead screw. Each clamping seat is movably sleeved with the sliding rod. A clamping mechanism is provided on each of the two clamping seats. A brake motor is fixedly mounted on the outer side of one support frame. The output shaft of the brake motor is connected to the end of one of the rotating rods. A servo motor is fixedly mounted on the outer side of one of the rotating plates. The output shaft of the servo motor... The output shaft and the end of the bidirectional lead screw are connected. An insertion hole is opened on the outer side of another rotating plate. A fixing mechanism is provided on the outer side of another support frame. A clamping groove is provided on one side of each of the two clamping seats. Two sliding grooves are provided on the other side of each of the two clamping seats. Two support seats are fixedly connected to the other side of each clamping seat. A dual-axis motor is fixedly installed on the other side of each clamping seat. Screws are fixedly connected to both ends of the dual-axis motor. The ends of the two screws are connected to the ends of the two support seats respectively. A movable seat is threaded onto the outer side of the screw. The end of the movable seat extends through the sliding groove into the inner cavity of the clamping groove and is fixedly connected to a clamping plate.

[0007] As a preferred embodiment of the present invention, the clamping mechanism includes a second electric push rod fixedly installed at the front and rear of the clamping seat, and the output ends of the two second electric push rods extend into the inner cavity of the clamping groove and are fixedly connected to a clamping plate.

[0008] As a preferred embodiment of the present invention, the fixing mechanism includes a first electric push rod fixedly installed on another support frame, the output end of the first electric push rod being fixedly connected to a pin, and the end of the pin being movably sleeved into the inner cavity of the insertion hole.

[0009] As a preferred embodiment of this utility model, a first elastic cylinder is fixedly connected between the two clamping seats, and a second elastic cylinder is fixedly connected between the rotating plate and the clamping seats. Both the second elastic cylinder and the first elastic cylinder are sleeved on the outside of the bidirectional lead screw.

[0010] In a preferred embodiment of this utility model, the inner wall of the slide groove and the side of the movable seat are in contact.

[0011] In a preferred embodiment of this utility model, the outer diameter of the pin and the inner diameter of the socket are equal.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] In this invention, the threaded engagement between the bidirectional lead screw and the two clamping seats drives the clamping seats to fix the screen in the middle of the horizontal direction, so that both ends of the screen are inserted into the clamping grooves on the two clamping seats respectively. In addition, two dual-axis motors drive two screws to rotate, and the engagement between the screws and the moving seat drives the clamping plates in the inner cavity of the clamping grooves to move closer to each other. The clamping plates fix the screen in the middle of the vertical direction, and the engagement between the second electric push rod and the clamping plate fixes the screen in the middle of the front-back direction. This ensures that the position of the screen does not change after it is flipped, and that the squeegee can smoothly coat the screen without the need to adjust the area coated by the squeegee, making it highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the clamping base of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the movable base of this utility model.

[0018] Explanation of the labels in the diagram:

[0019] 1. Support frame; 2. Rotating rod; 3. Rotating plate; 4. Slide rod; 5. Two-way lead screw; 6. Servo motor; 7. Brake motor; 8. Clamping seat; 9. Fixing mechanism; 10. Clamping mechanism; 11. Clamping groove; 12. Support seat; 13. Slide groove; 14. Dual-axis motor; 15. Screw; 16. Moving seat; 17. Clamping plate; 18. Second electric push rod; 19. Clamping plate; 20. Insertion hole; 21. First electric push rod; 22. Pin; 23. First elastic cylinder; 24. Second elastic cylinder. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example:

[0024] Please see Figure 1-4 A flipping mechanism for a screen coating machine includes two support frames 1. Rotary rods 2 are rotatably connected to the inner sides of the two support frames 1. Rotary plates 3 are fixedly connected to the ends of the two rotating rods 2. A sliding rod 4 is fixedly sleeved between the two rotating plates 3. A bidirectional lead screw 5 is rotatably connected between the two rotating plates 3. Clamping seats 8 are threaded onto the outer sides of both ends of the bidirectional lead screw 5. The two clamping seats 8 are movably sleeved with the sliding rod 4. Each clamping seat 8 is equipped with a clamping mechanism 10. A brake motor 7 is fixedly mounted on the outer side of one support frame 1. The output shaft of the brake motor 7 is connected to the end of one rotating rod 2. A servo motor 6 is fixedly mounted on the outer side of one rotating plate 3. The output shaft of the servo motor 6 is connected to the bidirectional lead screw 5. The ends of the two plates are connected. Another rotating plate 3 has an insertion hole 20 on its outer side. Another support frame 1 has a fixing mechanism 9 on its outer side. One side of each of the two clamping seats 8 has a clamping groove 11. The other side of each of the two clamping seats 8 has two sliding grooves 13. The other side of each clamping seat 8 is fixedly connected to two support seats 12. A dual-axis motor 14 is fixedly installed on the other side of the clamping seat 8. Both ends of the dual-axis motor 14 are fixedly connected to screws 15. The ends of the two screws 15 are connected to the ends of the two support seats 12. The outer side of the screws 15 is threaded with a movable seat 16. The end of the movable seat 16 extends through the sliding groove 13 into the inner cavity of the clamping groove 11 and is fixedly connected to a clamping plate 17.

[0025] For details, please refer to Figure 1 and Figure 3The clamping mechanism 10 includes second electric push rods 18 fixedly installed at the front and rear of the clamping seat 8. The output ends of the two second electric push rods 18 extend into the inner cavity of the clamping groove 11 and are fixedly connected to clamping plates 19.

[0026] In this embodiment, the clamping plate 19 is moved by the second electric push rod 18, and the clamping plate 19 clamps and fixes the front and rear sides of the screen.

[0027] For details, please refer to Figure 1 and Figure 2 The fixing mechanism 9 includes a first electric push rod 21 fixedly installed on another support frame 1. The output end of the first electric push rod 21 is fixedly connected to a pin 22, and the end of the pin 22 is movably sleeved into the inner cavity of the insertion hole 20.

[0028] In this embodiment, the first electric push rod 21 drives the pin 22 to move, so that the pin 22 is inserted into the inner cavity of the socket 20 to fix the rotating plate 3.

[0029] For details, please refer to Figure 1 and Figure 2 A first elastic cylinder 23 is fixedly connected between the two clamping seats 8, and a second elastic cylinder 24 is fixedly connected between the rotating plate 3 and the clamping seats 8. Both the second elastic cylinder 24 and the first elastic cylinder 23 are sleeved on the outside of the bidirectional lead screw 5.

[0030] In this embodiment, the bidirectional lead screw 5 is protected by the first elastic cylinder 23 and the second elastic cylinder 24.

[0031] For details, please refer to Figure 3 and Figure 4 The inner wall of the slide 13 fits against the side of the movable seat 16.

[0032] In this embodiment, the inner wall of the slide groove 13 is used to limit the movement of the movable seat 16, so that the movable seat 16 and the clamping plate 17 can only move along the axial direction of the screw 15.

[0033] For details, please refer to Figure 2 The outer diameter of the pin 22 is equal to the inner diameter of the socket 20.

[0034] In this embodiment, the stability of the pin 22 inserted into the cavity of the socket 20 is ensured, thereby ensuring the stability of fixing the rotating plate 3.

[0035] Working principle: In use, first place the screen to be coated between two clamping seats 8. Start the servo motor 6 to drive the bidirectional lead screw 5 to rotate. Through the threaded engagement between the bidirectional lead screw 5 and the two clamping seats 8, the two clamping seats 8 are moved closer together, so that both ends of the screen are inserted into the two clamping slots 11 on the two clamping seats 8 respectively, and the ends of the screen are made to fit against the inner wall of the clamping slots 11. Then, start the dual-axis motors 14 on the sides of the two clamping seats 8. The two dual-axis motors 14 drive the two screws 15 to rotate respectively. Through the threaded engagement between the screws 15 and the moving seat 16, the two sets of vertically arranged clamping plates 17 are moved closer together, so that the top surfaces of the two clamping plates 17 are moved closer together. The bottom surface of the screen is aligned with the bottom and top surfaces of the screen, respectively. Then, the second electric push rod 18 at the front and rear of the clamping seat 8 is activated to drive the clamping plate 19 to push the front and rear of the screen, so that the screen is placed in the middle of the inner cavity of the clamping groove 11. Finally, the screen is coated on one side using a scraper. After coating, the first electric push rod 21 is activated to drive the pin 22 to disengage from the inner cavity of the insertion hole 20, releasing the fixing of the rotating plate 3. The brake motor 7 is activated to drive the rotating plate 3, the clamping seat 8 and the screen to rotate 180 degrees. After rotation, the first electric push rod 21 is activated to drive the pin 22 to insert into the insertion hole 20 to fix the rotating plate 3 again. In addition, the height of the screen remains unchanged after rotation, so that the scraper can be coated without changing its position.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A flipping mechanism for a screen coating machine, comprising two support frames (1), characterized in that: Two support frames (1) are rotatably connected to the inner sides of each support frame (1). Rotary rods (2) are fixedly connected to the ends of the two rotary rods (2). A sliding rod (4) is fixedly sleeved between the two rotating rods (3). A bidirectional lead screw (5) is rotatably connected between the two rotating rods (3). Clamping seats (8) are threaded onto the outer sides of both ends of the bidirectional lead screw (5). The two clamping seats (8) are movably sleeved with the sliding rods (4). Each clamping seat (8) is equipped with a clamping mechanism (10). A brake motor (7) is fixedly installed on the outer side of one support frame (1). The output shaft of the brake motor (7) is connected to the end of one rotary rod (2). A servo motor (6) is fixedly installed on the outer side of one rotating rod (3). The output shaft of the servo motor (6) is connected to the end of the bidirectional lead screw (5). The outer side of the rotating plate (3) is provided with an insertion hole (20), and the outer side of the other support frame (1) is provided with a fixing mechanism (9). One side of each of the two clamping seats (8) is provided with a clamping groove (11), and the other side of each of the two clamping seats (8) is provided with two sliding grooves (13). The other side of each clamping seat (8) is fixedly connected with two support seats (12). The other side of the clamping seat (8) is fixedly installed with a dual-axis motor (14). The two ends of the dual-axis motor (14) are fixedly connected with screws (15). The ends of the two screws (15) are connected to the ends of the two support seats (12). The outer side of the screws (15) is threaded with a movable seat (16). The end of the movable seat (16) extends through the sliding groove (13) to the inner cavity of the clamping groove (11) and is fixedly connected with a clamping plate (17). The clamping mechanism (10) includes a second electric push rod (18) fixedly installed at the front and rear of the clamping seat (8). The output ends of the two second electric push rods (18) extend into the inner cavity of the clamping groove (11) and are fixedly connected to a clamping plate (19). The fixing mechanism (9) includes a first electric push rod (21) fixedly installed on another support frame (1). The output end of the first electric push rod (21) is fixedly connected to a pin (22), and the end of the pin (22) is movably sleeved into the inner cavity of the socket (20).

2. The flipping mechanism of a screen coating machine according to claim 1, characterized in that: A first elastic cylinder (23) is fixedly connected between the two clamping seats (8), and a second elastic cylinder (24) is fixedly connected between the rotating plate (3) and the clamping seat (8). The second elastic cylinder (24) and the first elastic cylinder (23) are both sleeved on the outside of the bidirectional lead screw (5).

3. The flipping mechanism of a screen coating machine according to claim 1, characterized in that: The inner wall of the slide (13) and the side of the movable seat (16) are in contact.

4. The flipping mechanism of a screen coating machine according to claim 1, characterized in that: The outer diameter of the pin (22) is equal to the inner diameter of the socket (20).

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