PCB (Printed Circuit Board) laminating device

Abstract

The utility model discloses a PCB film coating device, and relates to the technical field of circuit board processing. The device comprises a rack, conveying rollers are rotationally arranged at the two ends of the rack, a conveying belt is wound around the two conveying rollers in a transmission mode, and two rubber strips are arranged on the conveying face of the conveying belt; a box body with an opening in the bottom is arranged at one end of the machine frame through a connecting block, a flat nozzle and a dust collecting shell are arranged on the opposite sides of the inner wall of the box body respectively, a fan is arranged on the top of the box body, and an air outlet and an air inlet of the fan are communicated with an air outlet pipe and an air inlet pipe respectively. The free ends of the air outlet pipe and the air inlet pipe are respectively communicated with the flat nozzle and the dust collecting shell; according to the device, firstly, pressurized air flow is used for blowing the surface of a circuit board, attached dust is blown away, suction extraction is conducted after blowing away, the dust removal effect is better, two rubber strips are arranged on a conveying belt, the circuit board is elastically clamped and limited, the circuit board cannot move during blowing or extraction, and the dust removal efficiency is improved. And the subsequent film covering quality is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board processing equipment, and in particular to a PCB circuit board laminating device. Background Art

[0002] PCB, whose Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board.

[0003] During the production and processing of PCB circuit boards, it is necessary to perform coating processing on the surface, because the surface of the circuit board is easily damaged. By coating the surface of the circuit board, the surface of the circuit board can be protected from scratches. The existing coating generally places the circuit board on a conveyor belt for transmission, and the circuit board is coated with the film during the transmission process. In order to ensure the quality of the coating and avoid the generation of bubbles and hollowing, the surface of the circuit board is generally subjected to dust removal. The existing dust removal treatment generally sets an integrated shell above the conveyor belt, and uses a fan to extract suction to remove dust. Since the circuit board is directly placed on the conveyor belt, if the wind force is too small, some dust adheres to its surface and is difficult to remove. If the wind force is too large, it is easy to cause the circuit board to shift on the conveyor belt, resulting in uneven coating and reduced coating quality. Therefore, the present application proposes a PCB circuit board coating device. Utility Model Content

[0004] The purpose of this application is to solve the problems in the above background and provide a PCB circuit board laminating device.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] PCB circuit board laminating device, including:

[0007] The frame has transmission rollers rotatably arranged at both ends, and transmission belts are wound around the two transmission rollers, and the transmission surface of the transmission belt is provided with two rubber strips;

[0008] A box body with an opening at the bottom is arranged at one end of the frame through a connecting block, a flat mouth and a dust collecting shell are arranged on opposite sides of the inner wall of the box body, a fan is arranged on the top of the box body, an air outlet and an air inlet of the fan are respectively connected to an air outlet pipe and an air inlet pipe, the free ends of the air outlet pipe and the air inlet pipe are respectively connected to the flat mouth and the dust collecting shell, and a filter is connected to the air inlet pipe;

[0009] A rolling roller is rotatably arranged at the other end of the frame;

[0010] The material unloading rack is arranged on the frame and located between the box body and the rolling roller.

[0011] Furthermore, two shafts are rotatably provided on opposite sides of the box body, and pulley assemblies are provided on the two corresponding shafts, and the two pulley assemblies correspond to the two rubber strips one by one.

[0012] Furthermore, the filter element comprises a collection box connected to the air inlet pipe, and a filter screen is arranged in the collection box.

[0013] Furthermore, the collection box has an upper chamber and a lower chamber that are connected to each other, the filter screen is located in the upper chamber, and a drawer is movably inserted and pulled out in the lower chamber.

[0014] Furthermore, a rectangular frame is provided at both ends of the frame, a vertical rod is provided inside the rectangular frame, a movable block is slidably sleeved on the vertical rod, and the rolling roller is rotatably connected between the two movable blocks.

[0015] Furthermore, a spring sleeved on the vertical rod is installed between the movable block and the rectangular frame.

[0016] Furthermore, a plurality of supporting rollers are rotatably arranged in an array on the frame, and the plurality of supporting rollers are rotatably in contact with the inner top surface of the conveyor belt.

[0017] Furthermore, a mounting frame is provided on the frame, and a tensioning plate is provided on the mounting frame.

[0018] The beneficial effects of this application are as follows:

[0019] In the present application, the surface of the circuit board is first sprayed with pressurized airflow to effectively blow away the attached dust, and then suction is used to extract it after blowing it away, so that the cleaning effect is better. Two rubber strips are set on the conveyor belt to elastically clamp and limit the circuit board, so that the circuit board will not be displaced during spraying or extraction, thereby ensuring the subsequent coating quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of this application;

[0021] Figure 2 It is a sectional view of the three-dimensional structure of the present application;

[0022] Figure 3 This application Figure 1 Enlarged view of point A in the middle;

[0023] Figure 4 This application Figure 1 Enlarged view of point B in the middle;

[0024] Figure 5 This application Figure 2 Enlarged view of point C in the middle;

[0025] Figure 6 This application Figure 2 Enlarged view of point D in the middle;

[0026] Figure 7 This application Figure 2 Enlarged view of point E in the middle;

[0027] Figure numerals: 1, frame; 2, transmission roller; 3, transmission belt; 4, rubber strip; 5, box body; 6, flat mouth; 7, dust collecting shell; 8, fan; 9, air outlet pipe; 10, air inlet pipe; 11, filter element; 12, rolling roller; 13, material discharging rack; 14, shaft; 15, pulley assembly; 16, drawer; 17, rectangular frame; 18, vertical rod; 19, movable block; 20, spring; 21, supporting roller; 22, mounting frame; 23, tensioning plate; 1101, collection box; 1102, filter net. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0029] like Figure 1-Figure 7 As shown, a PCB circuit board laminating device proposed in one embodiment of the present application includes:

[0030] A frame 1 is provided with transmission rollers 2 at both ends thereof for rotation, a transmission belt 3 is wound around the two transmission rollers 2 for transmission, and two rubber strips 4 are provided on the transmission surface of the transmission belt 3; preferably, the spacing between the two rubber strips 4 is slightly smaller than the width of the circuit board, and the circuit board is placed on the transmission belt 3 and located between the two rubber strips 4 by utilizing the deformable property of the rubber strip 4 material, and the two rubber strips 4 elastically clamp the circuit board. It should be noted that the thickness of the rubber strip 4 is smaller than the thickness of the circuit board, so that the circuit board can be limitedly transmitted, and a box body 5 with an opening at the bottom is arranged at one end of the frame 1 through a connecting block, and a gap is left between the bottom of the box body 5 and the transmission belt 3, and the gap is larger than the thickness of the circuit board, and a flat mouth 6 and a dust collector are provided on opposite sides of the inner wall of the box body 5, respectively. Shell 7, the top of the box body 5 is provided with a fan 8, the air outlet and air inlet of the fan 8 are respectively connected to the air outlet pipe 9 and the air inlet pipe 10, the free ends of the air outlet pipe 9 and the air inlet pipe 10 are respectively connected to the flat mouth 6 and the dust collecting shell 7, and the air inlet pipe 10 is connected to the filter element 11; when the circuit board is placed on the conveyor belt 3 for transmission, the circuit board will pass under the opening of the box body 5, and the fan 8 works, and its air outlet conveys air to the flat mouth 6 through the air outlet pipe 9 (the structure of the flat mouth 6 can pressurize the air), and the air is pressurized by the flat mouth 6 and then ejected from its port, so as to blow the surface of the circuit board, so as to blow up the dust impurities attached to the surface of the circuit board. Since the fan 8 needs air intake compensation, the air in the box body 5 flows through the dust collecting shell 7 to the air inlet pipe 10 , to meet the air intake demand of the fan 8. When the air in the dust collecting shell 7 passes through the air inlet pipe 10, the filter 11 filters and intercepts the dust impurities in the air to prevent the dust from entering the fan 8. The overall structure of the device, through the work of the fan 8, first uses air to spray and blow on the surface of the circuit board to blow up the dust and separate it from the circuit board, and then uses suction to extract the dust, so as to achieve the cleaning effect. Because some dust adheres to the surface of the circuit board, it is difficult to clean it up by wind extraction alone, but first relying on the pressurized airflow for spraying, the attached dust can be effectively blown away, and then extracted after blowing away, so that the cleaning effect is better. There is a gap between the box body 5 and the conveyor belt 3 to meet the airflow circulation. At the same time, the circuit board is protected by two rubber strips 4 is limited so that it will not be displaced when it is blown by wind and extracted, thereby ensuring the quality of subsequent coating. The rolling roller 12 is rotatably arranged at the other end of the frame 1; the unloading rack 13 is arranged on the frame 1 and is located between the box body 5 and the rolling roller 12. The unloading rack 13 is used to place the film cylinder wound with the film. When coating the circuit board, the free end of the film is attached to the first circuit board and then transmitted from under the rolling roller 12. During transmission, the rolling roller 12 rolls the film attached to the circuit board so that the film is tightly attached without bubbles and hollowing. The subsequent circuit boards are closely arranged on the conveyor belt 3 for transmission, and dust removal and coating are carried out in sequence. Subsequently, a knife is used to cut the film between two adjacent circuit boards to complete the coating.

[0031] like Figure 4 As shown, in some embodiments, two shafts 14 are rotatably provided on opposite sides of the box body 5, and the corresponding two shafts 14 are provided with pulley assemblies 15. The pulley assembly 15 includes a transmission wheel fixed on the shaft 14, and a transmission belt is wound around the two transmission wheels. The two pulley assemblies 15 correspond to the two rubber strips 4 one by one, respectively, and the transmission belt overlaps the rubber strip 4. The transmission belt is used to block the gap between the box body 5 and the transmission belt 3 (on both sides parallel to the transmission direction). However, during the blocking process, the normal transmission of the transmission belt 3 is not affected. Through blocking, when the flat nozzle 6 is blown by air, dust is not easy to escape from the gap on both sides, and a dust collecting shell 7 is provided on the side perpendicular to the transmission of the transmission belt 3, which can extract dust, thereby preventing dust from escaping from the box body 5 and ensuring the sanitation of the work station environment.

[0032] like Figure 5 As shown, in some embodiments, the filter element 11 includes a collection box 1101 connected to the air inlet pipe 10, and a filter screen 1102 is arranged in the collection box 1101. After the airflow and dust in the box body 5 enter the air inlet pipe 10, they will flow into the collection box 1101. The filter screen 1102 filters and intercepts the airflow, and the airflow can pass through. The dust will be intercepted in the collection box 1101, thereby preventing the dust from entering the fan 8 and preventing the extracted dust from flowing back into the box body 5 again.

[0033] like Figure 5 As shown, in some embodiments, the collection box 1101 has an upper chamber and a lower chamber that are connected to each other, the filter screen 1102 is located in the upper chamber, and a drawer 16 is movably inserted and pulled out in the lower chamber. By configuring the collection box 1101 into an upper and lower two-layer structure, the filter screen 1102 is located in the upper layer, so that the intercepted dust is located in the lower layer and falls into the drawer 16. The design of the movable insertion and pulling out of the drawer 16 makes it easy to clean the dust, thereby improving practicality.

[0034] like Figure 3 As shown, in some embodiments, a rectangular frame 17 is provided at both ends of the frame 1, a vertical rod 18 is provided in the rectangular frame 17, a movable block 19 is slidably sleeved on the vertical rod 18, and the rolling roller 12 is rotatably connected between the two movable blocks 19. By rotatably setting the rolling roller 12 on the two movable blocks 19, the movable block 19 is slidably matched with the vertical rod 18, so that the rolling roller 12 can move up and down without affecting the rotation, and rely on its own gravity to roll the film attached to the circuit board, thereby improving the coating effect, and at the same time adapting to the coating of circuit boards of different thicknesses, thereby improving practicality.

[0035] like Figure 3As shown, in some embodiments, a spring 20 mounted on the vertical rod 18 is installed between the movable block 19 and the rectangular frame 17. The additional spring 20 is used to increase the elastic force of the spring 20 to increase the pressure of the rolling roller 12 on the circuit board and the film attached thereto, so that the laminating effect is better.

[0036] like Figure 2 As shown, in some embodiments, a plurality of supporting rollers 21 are rotatably arranged in an array on the frame 1, and the plurality of supporting rollers 21 are rotatably in contact with the inner top surface of the conveyor belt 3. The plurality of supporting rollers 21 arranged in an array can also support the conveyor belt 3 without affecting the normal transmission of the conveyor belt 3, thereby ensuring the rolling and covering effect of the rolling roller 12.

[0037] like Figure 2 As shown, in some embodiments, a mounting frame 22 is provided on the frame 1, and a tensioning plate 23 is provided on the mounting frame 22. Preferably, the tensioning plate 23 is vertically arranged, and its bottom end is in an arc structure and overlaps the membrane, such as Figure 2 As shown, after the rolling roller 12 presses the film attached to the circuit board, the bottom end of the tensioning plate 23 overlaps the film. When the circuit board is being transported for coating, the film will rub against the bottom end of the tensioning plate 23 to produce friction resistance. The tensioning plate 23 will tension and straighten the film. By tensioning and straightening the film with the tensioning plate 23, the film can be made smoother during coating, thereby improving the quality of coating.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. PCB circuit board laminating device, characterized in that: include: A frame (1) is provided with transmission rollers (2) at both ends thereof for rotation, a transmission belt (3) is provided on the two transmission rollers (2) for transmission, and two rubber strips (4) are provided on the transmission surface of the transmission belt (3); A box body (5) with an opening at the bottom is arranged at one end of the frame (1) through a connecting block, a flat mouth (6) and a dust collecting shell (7) are respectively arranged on opposite sides of the inner wall of the box body (5), a fan (8) is arranged on the top of the box body (5), the air outlet and air inlet of the fan (8) are respectively connected to an air outlet pipe (9) and an air inlet pipe (10), the free ends of the air outlet pipe (9) and the air inlet pipe (10) are respectively connected to the flat mouth (6) and the dust collecting shell (7), and the air inlet pipe (10) is connected to a filter element (11); A rolling roller (12) is rotatably arranged at the other end of the frame (1); The material discharging rack (13) is arranged on the frame (1) and is located between the box body (5) and the rolling roller (12).

2. The PCB circuit board laminating device according to claim 1, characterized in that: Two shafts (14) are rotatably arranged on opposite sides of the box body (5), and a belt pulley assembly (15) is arranged on the two corresponding shafts (14). The two belt pulley assemblies (15) correspond to the two rubber strips (4) one by one.

3. The PCB circuit board laminating device according to claim 1, characterized in that: The filter element (11) comprises a collection box (1101) connected to the air inlet pipe (10), and a filter screen (1102) is arranged inside the collection box (1101).

4. The PCB circuit board laminating device according to claim 3, characterized in that: The collection box (1101) has an upper chamber and a lower chamber that are connected to each other. The filter screen (1102) is located in the upper chamber, and a drawer (16) is movably inserted and pulled out of the lower chamber.

5. The PCB circuit board laminating device according to claim 1, characterized in that: Rectangular frames (17) are provided at both ends of the frame (1), a vertical rod (18) is provided inside the rectangular frame (17), a movable block (19) is slidably sleeved on the vertical rod (18), and the rolling roller (12) is rotatably connected between the two movable blocks (19).

6. The PCB circuit board laminating device according to claim 5, characterized in that: A spring (20) sleeved on the vertical rod (18) is installed between the movable block (19) and the rectangular frame (17).

7. The PCB circuit board laminating device according to claim 1, characterized in that: A plurality of supporting rollers (21) are rotatably arranged in an array on the frame (1), and the plurality of supporting rollers (21) are rotatably in contact with the inner top surface of the conveyor belt (3).

8. The PCB circuit board laminating device according to claim 1, characterized in that: A mounting frame (22) is arranged on the frame (1), and a tensioning plate (23) is arranged on the mounting frame (22).

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