Screen frame positioning device for circuit board screen printing

Abstract

The utility model relates to a screen frame positioning device for circuit board screen printing, which belongs to the technical field of screen frames and comprises a first groove seat, a first sliding groove is arranged on one side of the first groove seat, and the first groove seat is slidably connected with one end of a positioning plate through the first sliding groove. A threaded movable block is fixedly connected to the top end of the positioning plate, a threaded through hole is formed in the threaded movable block in a penetrating mode, the threaded movable block is in threaded connection with a screw through the threaded through hole, and one end of the screw is rotationally connected with the first fixing block. Through the arrangement of the positioning plate, the screen frame can be positioned more accurately in the screen printing work, the manual knob is rotated, the screw is rotated, the positioning plate is driven by the screw to freely move in the sliding rail, the screen frame can be positioned more accurately, the screen frame can be positioned more accurately, the screen frame can be positioned more accurately, the screen frame can be positioned more accurately, and the screen frame can be positioned more accurately. And the screen frame is clamped through the positioning plate, so that accurate alignment between the circuit board and the screen printing screen frame is ensured, and the accuracy of screen printing is improved.

Description

Technical Field

[0001] This utility model relates to the field of wireframe technology, specifically to a wireframe positioning device for screen printing on circuit boards. Background Technology

[0002] Circuit boards are generally also called printed circuit boards. Based on the number of layers, they are generally divided into single-sided boards, double-sided boards, and multi-layer boards. Screen printing on circuit boards refers to the process of using screen printing technology to print text, symbols, and other information onto the surface of the printed circuit board.

[0003] The operating principle of most PCB screen printing machines currently on the market is based on designing the screen frame as a slotted structure for snap-fit ​​fixation. After the screen frame is successfully embedded into the screen printing machine, the screen printing operation begins. This design has some problems with the positioning of the screen frame, such as insufficient positioning accuracy, low compatibility with the screen frame, easy to cause deviations in PCB printing, and inability to be used with screen frames of other different specifications.

[0004] Therefore, in order to solve the above problems, this utility model provides a screen frame positioning device for screen printing on circuit boards. Utility Model Content

[0005] In view of this, this utility model addresses the shortcomings of the prior art by providing a screen frame positioning device for circuit board screen printing, which solves the problems of inaccurate positioning of the screen frame and inability to be applied to screen frames of different specifications.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A screen frame positioning device for circuit board screen printing includes a first slot seat with a first sliding groove on one side. The first slot seat is slidably connected to one end of a positioning plate via the first sliding groove. A threaded movable block is fixedly connected to the top of the positioning plate. A threaded through hole is formed inside the threaded movable block, which is threadedly connected to a screw rod through the threaded through hole. One end of the screw rod is rotatably connected to a first fixed block. The other end of the screw rod passes through a second slot seat and is rotatably connected to the second slot seat. A manual knob is fixedly connected to one end of the screw rod.

[0008] Preferably, a slider is fixedly connected to the top of the positioning plate, the slider has a through hole, the slider is slidably connected to the slide rod through the through hole, one end of the slide rod is fixedly connected to the second fixing block, the second slot seat has second sliding grooves through both sides, the slide rod is slidably connected to the second slot seat through the second sliding grooves, and a limiter is provided on one side of the second slot seat, the limiter is sleeved on the periphery of the slide rod.

[0009] Preferably, a mounting plate is fixedly connected to one end of the first slot, a wire frame bracket is fixedly connected to one side of the mounting plate, one end of the mounting plate is slidably connected to the slide rail, a rotating shaft is provided inside the mounting plate, the rotating shaft passes through the mounting plate and is rotatably connected to the mounting plate, both ends of the rotating shaft are rotatably connected to the U-shaped plate, and a handle is fixedly connected to the top of the mounting plate.

[0010] Preferably, a fixing frame is fixedly connected to one side of the U-shaped plate, and a slot is opened at the top of the fixing frame. The fixing frame is slidably connected to the handle through the slot. Multiple fixing bolts are provided at the top of the fixing frame, and the bottom end of the fixing bolt is threadedly connected to the U-shaped plate. Nuts are threadedly connected to the periphery of the fixing bolt.

[0011] Preferably, one end of the positioning plate is slidably connected to the slide rail, and a fixing ring is sleeved on one end of the positioning plate.

[0012] Preferably, a limiting rod is fixedly connected to the top of the positioning plate, the limiting rod is rotatably connected to one end of the connecting plate, and a locking bolt is provided at the other end of the connecting plate.

[0013] The advantages of this utility model compared with the prior art are:

[0014] 1. This utility model provides a screen frame positioning device for screen printing on circuit boards. By setting a positioning plate, the positioning of the screen frame during screen printing is more precise. Rotating the manual knob causes the screw to rotate, and the positioning plate moves freely in the slide rail under the drive of the screw. The screen frame is placed on the screen frame bracket and clamped by the positioning plate to ensure precise alignment between the circuit board and the screen printing frame, avoid printing deviation, and improve the accuracy of screen printing.

[0015] 2. This utility model provides a screen frame positioning device for screen printing on circuit boards. While the positioning plate moves freely in the slide rail, the slide rail slides in the second slide groove. In different working environments, the screen frame also has various plate types and specifications. Through the design of the positioning plate, slide rail and second groove seat, accurate positioning can be achieved based on screen frames of different specifications, which greatly improves the applicability of the device. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of the positioning device for the screen printing frame of the circuit board in this utility model.

[0018] Figure 2This is a schematic diagram of the positioning device for the screen printing frame of the circuit board in this utility model from another perspective.

[0019] Figure 3 for Figure 1 A magnified structural diagram at point A.

[0020] The following are the labels in the diagram: 1. First slot seat; 2. First slide groove; 3. Positioning plate; 4. Threaded movable block; 5. Screw; 6. First fixed block; 7. Second slot seat; 8. Second slide groove; 9. Manual knob; 10. Slider; 11. Slide rod; 12. Second fixed block; 13. Limiter; 14. Mounting plate; 15. Frame bracket; 16. U-shaped plate; 17. Rotating shaft; 18. Handle; 19. Fixing bracket; 20. Slot; 21. Fixing bolt; 22. Nut; 23. Slide rail; 24. Fixing ring; 25. Limiting rod; 26. Connecting plate; 27. Locking bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] As a preferred embodiment of this utility model, this utility model provides a screen frame positioning device for circuit board screen printing, including a first slot seat 1, a first sliding groove 2 on one side of the first slot seat 1, the first slot seat 1 being slidably connected to one end of a positioning plate 3 via the first sliding groove 2, and the other end of the positioning plate 3 being slidably connected to a slide rail 23. The positioning plate 3 slides within the first slot seat 1 and the slide rail 23, and different screen frames are positioned and clamped by changing the position of the positioning plate 3. A fixing ring 24 is sleeved on one end of the positioning plate 3, which can lock the position of the positioning plate 3 to prevent movement during screen printing, thus preventing the finished product from being substandard. A threaded movable block 4 is fixedly connected to the top of the positioning plate 3, and a threaded through hole is opened inside the threaded movable block 4. The threaded movable block 4 is threadedly connected to a screw 5 through the threaded through hole. One end of the screw 5 is rotatably connected to a first fixing block 6, and the other end of the screw 5 passes through a second slot seat 7 and is rotatably connected to the second slot seat 7. A manual knob 9 is fixedly connected to one end of the screw 5. Rotating the manual knob 9 positions the screen frame. The plate moves under the action of screw 5. A slider 10 is fixedly connected to the top of the positioning plate 3. The slider 10 has a through hole and is slidably connected to the slide rod 11 through the through hole. One end of the slide rod 11 is fixedly connected to the second fixing block 12. The slider 10 and the slide rod 11 guide the positioning plate 3 and prevent the positioning plate 3 from shifting. The second groove seat 7 has second sliding grooves 8 through its two sides. The slide rod 11 is slidably connected to the second groove seat 7 through the second sliding grooves 8. One side of the second groove seat 7 is provided with The limiter 13 is sleeved around the slide rod 11. When the positioning plate 3 moves to the set position, it fixes the position of the slide rod 11 to prevent the slide rail 23 and the slide rod 11 from moving in the second slot seat 7 during the screen printing process, which would cause the screen printing to deviate. The top of the positioning plate 3 is fixedly connected to the limit rod 25. The limit rod 25 is rotatably connected to one end of the connecting plate 26. The other end of the connecting plate 26 is provided with a locking bolt 27, which can fix the screen frame and ensure the accuracy of the screen frame position.

[0023] Reference Figure 1-3As shown, a screen frame positioning device for screen printing on circuit boards includes a mounting plate 14 fixedly connected to one end of a first slot 1, a screen frame bracket 15 fixedly connected to one side of the mounting plate 14, one end of the mounting plate 14 slidably connected to a slide rail 23, a rotating shaft 17 disposed inside the mounting plate 14, the rotating shaft 17 passing through the mounting plate 14 and rotatably connected to the mounting plate 14, both ends of the rotating shaft 17 being rotatably connected to a U-shaped plate 16, a handle 18 fixedly connected to the top of the mounting plate 14, and a fixing frame 19 fixedly connected to one side of the U-shaped plate 16. A slot 20 is provided at the top of the fixing frame 19, through which... The slot 20 is slidably connected to the handle 18. The handle 18 can lift the device with the cooperation of the rotating shaft 17 and the U-shaped plate 16, so as to place the circuit board to be screen printed below. The top of the fixing frame 19 is provided with multiple fixing bolts 21. The bottom end of the fixing bolts 21 is threadedly connected to the U-shaped plate 16. Nuts 22 are threadedly connected to the periphery of the fixing bolts 21. The fixing bolts 21 and nuts 22 provided on the fixing frame 19 can adjust the height of the U-shaped plate 16, which is convenient for different working environments. At the same time, it can also fix the device and enhance the stability of the device in the screen printing process.

[0024] The working principle of this utility model:

[0025] When positioning the wire mesh frame using this device, place one end of the wire mesh frame to be positioned on the top of the wire mesh frame bracket 15. At this time, the operator turns the manual knob 9, and the screw 5 rotates. One end of the positioning plate 3 is threadedly connected to the screw 5, and the positioning plate 3 will move until it clamps the other end of the wire mesh frame. Tighten the limiter 13 to fix the position of the slide rod 11. Screw the connecting plate 26 above the wire mesh frame and use the locking bolt 27 to firmly fix the wire mesh frame. At the same time, tighten the fixing ring 24. After adjusting the device to a suitable height, tighten the nut 22. When it is necessary to place the circuit board to be screen-printed under the device, simply move the handle 18, and the device will be lifted as a whole, making it easy to replace the circuit board.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A screen frame positioning device for screen printing on circuit boards, characterized in that: Includes a first slot seat (1), a first sliding groove (2) is provided on one side of the first slot seat (1), the first slot seat (1) is slidably connected to one end of the positioning plate (3) through the first sliding groove (2), a threaded movable block (4) is fixedly connected to the top of the positioning plate (3), a threaded through hole is provided inside the threaded movable block (4), the threaded movable block (4) is threadedly connected to the screw (5) through the threaded through hole, one end of the screw (5) is rotatably connected to the first fixed block (6), the other end of the screw (5) passes through the second slot seat (7) and is rotatably connected to the second slot seat (7), and a manual knob (9) is fixedly connected to one end of the screw (5).

2. The screen frame positioning device for screen printing on circuit boards according to claim 1, characterized in that: The top of the positioning plate (3) is fixedly connected to a slider (10), the slider (10) has a through hole, the slider (10) is slidably connected to the slide rod (11) through the through hole, one end of the slide rod (11) is fixedly connected to the second fixing block (12), the second slot seat (7) has a second sliding groove (8) through both sides, the slide rod (11) is slidably connected to the second slot seat (7) through the second sliding groove (8), and a limiter (13) is provided on one side of the second slot seat (7), the limiter (13) is sleeved on the periphery of the slide rod (11).

3. The screen frame positioning device for screen printing on circuit boards according to claim 1, characterized in that: One end of the first slot (1) is fixedly connected to a mounting plate (14), and a wire mesh bracket (15) is fixedly connected to one side of the mounting plate (14). One end of the mounting plate (14) is slidably connected to a slide rail (23). A rotating shaft (17) is provided inside the mounting plate (14). The rotating shaft (17) passes through the mounting plate (14) and is rotatably connected to the mounting plate (14). Both ends of the rotating shaft (17) are rotatably connected to a U-shaped plate (16). A handle (18) is fixedly connected to the top of the mounting plate (14).

4. A screen frame positioning device for screen printing on circuit boards according to claim 3, characterized in that: A fixing frame (19) is fixedly connected to one side of the U-shaped plate (16). The top of the fixing frame (19) is provided with a slot (20). The fixing frame (19) is slidably connected to the handle (18) through the slot (20). The top of the fixing frame (19) is provided with multiple fixing bolts (21). The bottom end of the fixing bolts (21) is threadedly connected to the U-shaped plate (16). Nuts (22) are threadedly connected to the periphery of the fixing bolts (21).

5. A screen frame positioning device for screen printing on circuit boards according to claim 1, characterized in that: One end of the positioning plate (3) is slidably connected to the slide rail (23), and a fixing ring (24) is sleeved on one end of the positioning plate (3).

6. A screen frame positioning device for screen printing on circuit boards according to claim 1, characterized in that: The top end of the positioning plate (3) is fixedly connected to a limiting rod (25), the limiting rod (25) is rotatably connected to one end of the connecting plate (26), and the other end of the connecting plate (26) is provided with a locking bolt (27).

Images