Circuit board coating device

Abstract

The present invention relates to a circuit board coating device, comprising a chassis, a support plate is provided in the chassis, a hot pressing plate and a film pressing roller are provided above the support plate, a slide seat is provided at the bottom of the support plate, a screw driven by a motor I is provided on the slide seat, a mounting plate driven by an electric push rod is provided at the top of the support plate, a rectangular notch for accommodating an extension plate is provided at the top of one end of the mounting plate, the end of the mounting plate is hinged and fixed to the bottom of the extension plate by a hinge, an electromagnet magnetically connected to the bottom wall of the extension plate is provided in the rectangular notch, a groove for accommodating the circuit board is provided at the top of the mounting plate and the extension plate, and an adsorption mechanism I is provided at the top of the extension plate outside the groove; a rotating shaft for installing a film roll is provided in the chassis, a guide seat is provided between the film roll and the film pressing roller, an arc-shaped guide portion is provided on an edge of the bottom of the guide seat, and an adsorption mechanism II is also provided at the bottom of the guide seat. The present invention is beneficial to the coating work of the circuit board.

Description

Technical Field

[0001] The invention relates to the field of circuit board processing, and in particular to a circuit board coating device. Background Art

[0002] Flexible circuit boards are increasingly widely used in the electronics industry due to their excellent performance. The production process of flexible circuit boards includes multiple processes, among which after dry film pasting, alignment exposure, development, etching, and automatic optical inspection, a lamination process is required, that is, a layer of protective film is covered on the copper foil circuit to prevent circuit oxidation or short circuit, and at the same time, it plays an insulating role. After the lamination is completed, the lamination operation is carried out. At present, the lamination process of flexible circuit boards needs to be completed purely manually, that is, the protective film needs to be cut in advance according to the size of the board, and then manually pasted. This pasting method is more troublesome, time-consuming and labor-intensive, and the pasting quality is poor.

[0003] As a result, there is a protective film laminating device for flexible circuit boards with patent number CN115066105B. Although the device can solve the above problems to a certain extent, it still has the following defects, such as: it is necessary to first cut the rolled film into a sheet structure, then lay it flat on the top of the circuit board, and lock and fix the two ends of the film through a locking mechanism, and then laminating it. However, the film on the film roll has a curved structure after cutting. When it is placed on the top of the circuit board, it needs to be smoothed frequently so that the film can be tightly attached to the top surface of the circuit board for laminating it. This is time-consuming and labor-intensive, and its laminating effect is poor, and it is easy to have a series of effects such as bubbles or wrinkles. At the same time, the cutting and laminating of the film need to be carried out on two separate devices, which is not conducive to improving processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a circuit board coating device.

[0005] The technical problem of the present invention is mainly solved by the following technical solutions:

[0006] A circuit board laminating device comprises a chassis, wherein the two side walls of the chassis are provided with inlets and outlets correspondingly, wherein a support plate corresponding to the inlets and outlets is provided in the chassis, and a hot pressing plate and a laminating roller are provided in the chassis directly above the support plate:

[0007] A slide seat is provided at the middle of the bottom of the support plate, a slide rod and a screw rod are provided on the slide seat, the screw rod is driven by a motor I, a mounting plate driven by an electric push rod is provided at the top of the support plate, a rectangular notch for accommodating an extension plate is provided at the top of one end of the mounting plate, the end of the mounting plate is hingedly fixed to the bottom of the extension plate by a hinge, an electromagnet magnetically connected to the bottom wall of the extension plate is provided in the rectangular notch, a groove for accommodating a circuit board is provided on the mounting plate and the top of the extension plate, and an adsorption mechanism I is provided on the top of the extension plate outside the groove;

[0008] A rotating shaft for mounting a film roll is arranged in a machine box on one side of the laminating roller, a guide seat is arranged in a machine box between the film roll and the laminating roller, wherein an arc-shaped guide portion is arranged on the corner edge of the bottom of the guide seat on the same side as the film roll, and an adsorption mechanism II is also arranged at the bottom of the guide seat;

[0009] The adsorption mechanism I comprises an air suction cavity I arranged in the side wall of the extension plate, and the top of the extension plate is evenly provided with air suction holes I connected with the air suction cavity I, wherein a thermal fuse I is arranged on the top of the extension plate between the air suction holes I and the groove;

[0010] The adsorption mechanism II comprises an air suction cavity II arranged in the side wall of the guide seat, and the bottom of the guide seat is evenly provided with air suction holes II connected with the air suction cavity II, wherein a hot fuse II is arranged at the bottom of the guide seat between the air suction holes II and the lamination roller.

[0011] Preferably, the sliding seat is provided with a screw hole threadedly connected to the screw rod and a through hole for the sliding rod to pass through, a rectangular sliding channel is vertically arranged in the sliding seat, a connecting hole connected to the sliding channel is arranged at the top of the support plate, a vertical rod passing through the connecting hole is arranged at the bottom of the mounting plate, and a boss adapted to the vertical rod is arranged at the bottom end of the vertical rod and located in the sliding channel.

[0012] Preferably, a mounting groove for accommodating an electromagnet is provided at the bottom of the rectangular notch, and the electromagnet is magnetically fixed to the bottom end surface of the extension plate. The top of the extension plate and the bottom of the guide seat are both provided with strip grooves for accommodating corresponding thermal fuses I and II.

[0013] Preferably, the bottom of the guide seat is flush with the bottom end surface of the hot pressing plate and the film pressing roller, and the film roll is suspended above the guide seat, wherein the rotating shaft for fixing the film roll is fixedly connected to the output shaft of the motor II outside the chassis.

[0014] Preferably, the vacuum chamber I and the vacuum chamber II are both connected to corresponding vacuum pumps via a hose.

[0015] The beneficial effects of the present invention are as follows: the present invention performs automated feeding, cutting and laminating of circuit board films, and since laminating and film cutting are performed in one device, it improves work efficiency while effectively ensuring processing effects, and also facilitates the placement and removal of circuit boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 Enlarged view between the middle support plate and the mounting plate;

[0018] Figure 3 yes Figure 1 The enlarged view of point A in the middle;

[0019] Figure 4 yes Figure 3 Schematic diagram of the structure in another state.

[0020] In the figure: 1, chassis, 2, inlet and outlet, 3, support plate, 4, hot pressing plate, 5, film pressing roller, 6, slide seat, 7, slide rod, 8, screw rod, 9, motor I, 10, mounting plate, 11, electric push rod, 12, rectangular notch, 13, extension plate, 14, hinge, 15, electromagnet, 16, groove, 17, adsorption mechanism I, 171, suction chamber I, 172, suction hole I, 173, hot fuse I, 18, film roll, 19, rotating shaft, 20, guide seat, 21, guide part, 22, adsorption mechanism II, 221, suction chamber II, 222, suction hole II, 223, hot fuse II, 23, sliding channel, 24, vertical rod, 25, convex seat. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] A circuit board laminating device comprises a chassis 1, wherein the two side walls of the chassis 1 are provided with inlets and outlets 2 correspondingly, wherein a support plate 3 corresponding to the inlets and outlets 2 is provided in the chassis 1, and a hot pressing plate 4 and a laminating roller 5 are provided in the chassis 1 directly above the support plate 3:

[0023] A slide seat 6 is provided at the middle of the bottom of the support plate 3, a slide rod 7 and a screw rod 8 are provided on the slide seat 6, the screw rod 8 is driven by a motor 19, a mounting plate 10 driven by an electric push rod 11 is provided at the top of the support plate 3, a rectangular notch 12 for accommodating an extension plate 13 is provided at the top of one end of the mounting plate 10, the end of the mounting plate 10 is hingedly fixed to the bottom of the extension plate 13 by a hinge 14, an electromagnet 15 magnetically connected to the bottom wall of the extension plate 13 is provided in the rectangular notch 12, a groove 16 for accommodating a circuit board is provided at the top of the mounting plate 10 and the extension plate 13, and an adsorption mechanism 117 is provided at the top of the extension plate 13 outside the groove 16;

[0024] A rotating shaft 19 for mounting a film roll 18 is provided in the chassis 1 on one side of the lamination roller 5, and a guide seat 20 is provided in the chassis 1 between the film roll 18 and the lamination roller 5, wherein an arc-shaped guide portion 21 is provided on the bottom corner edge of the guide seat 20 on the same side as the film roll 18, and an adsorption mechanism II22 is also provided at the bottom of the guide seat 20;

[0025] The adsorption mechanism I17 includes an air suction cavity I171 disposed in the side wall of the extension plate 13, and air suction holes I172 connected to the air suction cavity I171 are evenly disposed on the top of the extension plate 13, wherein a thermal fuse I173 is disposed on the top of the extension plate 13 between the air suction holes I172 and the groove 16;

[0026] The adsorption mechanism II22 includes an exhaust cavity II221 arranged in the side wall of the guide seat 20, and the bottom of the guide seat 20 is evenly provided with suction holes II222 connected to the exhaust cavity II221, wherein a hot fuse II223 is arranged at the bottom of the guide seat 20 between the suction holes II222 and the film pressing roller 5.

[0027] In this embodiment, the slide seat 6 is provided with a screw hole screwed to the screw rod 8 and a through hole for the slide rod 7 to pass through, a rectangular sliding channel 23 is vertically provided in the slide seat 6, a connecting hole connected to the sliding channel 23 is provided at the top of the support plate 3, a vertical rod 24 passing through the connecting hole is provided at the bottom of the mounting plate 10, and a boss 25 adapted to the vertical rod 24 and located in the sliding channel 23 is provided at the bottom end of the vertical rod 24.

[0028] In this embodiment, a mounting groove for accommodating the electromagnet 15 is provided at the bottom of the rectangular notch 12, and the electromagnet 15 is magnetically fixed to the bottom end surface of the extension plate 13. The top of the extension plate 13 and the bottom of the guide seat 20 are both provided with strip grooves for accommodating the corresponding thermal fuse I173 and thermal fuse II223.

[0029] like Figure 1As shown, the bottom of the guide seat 20 is flush with the bottom end surfaces of the hot pressing plate 4 and the film pressing roller 5, and the film roll 18 is suspended above the guide seat 20, wherein the rotating shaft 19 for fixing the film roll 18 is fixedly connected to the output shaft of the motor II outside the chassis 1.

[0030] In this embodiment, the vacuum chamber I171 and the vacuum chamber II221 are both connected to corresponding vacuum pumps through hoses.

[0031] When in use, the starting end of the film on the film roll 18 is pulled to make it located at the bottom of the guide seat 20, and the vacuum chamber II221 and the suction hole II222 are evacuated by a vacuum pump, so that the end of the film is adsorbed on the bottom of the guide seat 20. At this time, the diameter of the suction hole II222 is small, so that the film will not slide into it under the influence of suction;

[0032] Then the motor I9 drives the screw rod 8 to rotate in the screw hole on the slide 6, thereby driving the support plate 3, the mounting plate 10 and other components to move to the left side of the chassis 1, and one end of the above components extends to the outside of the chassis 1 through the left inlet and outlet 2, so that people can lay the circuit board flat in the groove 16 for fixing. In the next step, the motor I9 drives the circuit board to move right through the screw rod 8, the slide 6, the support plate 3 and the mounting plate 10. When the circuit board is close to the guide seat 20, the electric push rod 11 drives the mounting plate 10 to drive the extension plate 13 and the circuit board in the groove 16 to move up, so that the extension plate 13 contacts the bottom of the guide seat 20. At this time, the vacuum pump performs vacuuming through the vacuum chamber I171 and the suction hole I172 to press the guide seat. The end of the film below 20 plays an adsorption and fixing role, and at the same time, the adsorption mechanism II22 exhausts and stops working, and finally the end of the film is fixed on the adsorption mechanism I17 on the top of the extension plate 13. At this time, the support plate 3, the mounting plate 10 and the extension plate 13 that continue to move right can drive the circuit board to move right, so that the film pressed by the guide seat 20 is tightly attached to the top surface of the circuit board. At this time, the motor II drives the film roll 18 to rotate through the rotating shaft 19, so that the film on the film roll 18 is loosened so that it can be pulled and covered on the circuit board, thereby realizing the laminating work. At the same time, the film is heated and extruded by the subsequent hot pressing plate 4 and the film pressing roller 5 that contact the circuit board, so that it fits on the top surface of the circuit board, realizing the laminating work;

[0033] When the circuit board completely slides under the guide seat 20, the adsorption mechanism II22 works to adsorb and fix the film under it, and at the same time, the hot fuse II223 is energized and heated to cut the film between the guide seat 20 and the circuit board, so that the film under the guide seat 20 is ready for the next coating work. When the circuit board completes the coating work, the hot fuse I173 on the adsorption mechanism I17 is energized and heated to cut off the excess film above the extension plate outside the groove 16 to achieve the purpose of removing scraps. Finally, one end of the mounting plate 10 and the support plate 3 slide out from the right inlet and outlet 2. At this time, the electromagnet can be powered off. Then, when the magnetic attraction of the electromagnet is lost, Figure 4 As shown, people can press the right end of the extension plate 13 to rotate it clockwise with the hinge 14 as the center, thereby lifting one end of the circuit board in the groove 16, so that the circuit board is tilted and suspended in the air, making it convenient for people to grab the circuit board for removal. Then, the components are reset and the above steps are repeated to carry out the processing again.

[0034] The present invention is described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A circuit board laminating device, comprising a chassis, wherein the two side walls of the chassis are provided with inlets and outlets correspondingly, wherein a support plate corresponding to the inlets and outlets is provided in the chassis, and a hot pressing plate and a laminating roller are provided in the chassis directly above the support plate, characterized in that: A slide seat is provided at the middle of the bottom of the support plate, a slide rod and a screw rod are provided on the slide seat, the screw rod is driven by a motor I, a mounting plate driven by an electric push rod is provided at the top of the support plate, a rectangular notch for accommodating an extension plate is provided at the top of one end of the mounting plate, the end of the mounting plate is hingedly fixed to the bottom of the extension plate by a hinge, an electromagnet magnetically connected to the bottom wall of the extension plate is provided in the rectangular notch, a groove for accommodating a circuit board is provided on the mounting plate and the top of the extension plate, and an adsorption mechanism I is provided on the top of the extension plate outside the groove; A rotating shaft for mounting a film roll is arranged in a machine box on one side of the laminating roller, a guide seat is arranged in a machine box between the film roll and the laminating roller, wherein an arc-shaped guide portion is arranged on the corner edge of the bottom of the guide seat on the same side as the film roll, and an adsorption mechanism II is also arranged at the bottom of the guide seat; The adsorption mechanism I comprises an air suction cavity I arranged in the side wall of the extension plate, and the top of the extension plate is evenly provided with air suction holes I connected with the air suction cavity I, wherein a thermal fuse I is arranged on the top of the extension plate between the air suction holes I and the groove; The adsorption mechanism II comprises an air suction cavity II arranged in the side wall of the guide seat, and the bottom of the guide seat is evenly provided with air suction holes II connected with the air suction cavity II, wherein a hot fuse II is arranged at the bottom of the guide seat between the air suction holes II and the lamination roller.

2. A circuit board coating device according to claim 1, characterized in that: The sliding seat is provided with a screw hole screwed to the screw rod and a through hole for the sliding rod to pass through, a rectangular sliding channel is vertically provided in the sliding seat, a connecting hole connected to the sliding channel is provided at the top of the support plate, a vertical rod passing through the connecting hole is provided at the bottom of the mounting plate, and a convex seat adapted to the vertical rod and located in the sliding channel is provided at the bottom end of the vertical rod.

3. A circuit board coating device according to claim 1, characterized in that: The bottom of the rectangular notch is provided with a mounting groove for accommodating the electromagnet, and the electromagnet is magnetically fixed to the bottom end surface of the extension plate. The top of the extension plate and the bottom of the guide seat are both provided with strip grooves for accommodating the corresponding thermal fuses I and II.

4. A circuit board coating device according to claim 1, characterized in that: The bottom of the guide seat is flush with the bottom end surface of the hot pressing plate and the film pressing roller, and the film roll is suspended above the guide seat, wherein the rotating shaft for fixing the film roll is fixedly connected to the output shaft of the motor II outside the chassis.

5. A circuit board coating device according to claim 1, characterized in that: The vacuum chamber I and the vacuum chamber II are both connected to corresponding vacuum pumps through a hose.

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