PCB board exposure machine

Abstract

A PCB exposure machine, the exposure platform is provided with a cover plate, the fixed plate is fixedly connected with an inclined plate, and the inner side of the inclined plate is fixedly connected with the machine body. The PCB exposure machine, through the cooperation of the fixed plate and the discharge mechanism, the output end of the electric telescopic rod moves to drive the push plate to move, and at the same time drives multiple rollers to roll. The push plate can push the lowest PCB from the gap on the front side of the feeding box to prevent the PCB from falling during feeding and reduce the damage of the PCB. Through the cooperation of the feeding box and the adjusting structure, two nuts are loosened, then the cylinder is manually moved up and down, the cylinder moves to drive the second baffle to move, when the second baffle can block the second PCB from bottom to top, stop moving the cylinder, then tighten the two nuts in turn, thereby fixing the position of the cylinder, so that different thicknesses of PCB can be fed within a certain range.

Description

Technical Field

[0001] This utility model relates to the field of PCB board exposure technology, and in particular to a PCB board exposure machine. Background Technology

[0002] Printed Circuit Board (PCB) is an important electronic component in electronic devices. It supports electronic components and realizes the electrical connection between them. It connects components such as resistors, capacitors, and chips in an orderly manner through conductive lines (copper foil), pads, and holes (through holes, mounting holes, etc.) on an insulating substrate. It is the "nervous system" of electronic products.

[0003] For example, a PCB exposure machine with announcement number "CN213517882U" places unexposed boards on a first feeding plate and exposed boards on a second feeding plate, categorizing them accordingly. It also features a top-loading mechanism for easier board handling and a feeding tray for collecting and transporting exposed boards, making operation more convenient and significantly improving production efficiency. However, when a certain number of PCBs are placed on the feeding plates, removing them for exposure requires the operator to step on a foot pedal, causing the boards on the first feeding plate to tilt and fall, resulting in unnecessary damage. Furthermore, when the exposed boards are thick, the top-loading rod lifts them but remains stuck in the limiting frame, preventing removal. Utility Model Content

[0004] This invention aims to solve the problems existing in the prior art by providing a PCB board exposure machine. The machine pushes out the PCB board using a pusher plate, thereby reducing damage to the PCB board during loading. At the same time, by adjusting the height of the second baffle, it can load PCB boards of different thicknesses within a certain range.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This PCB board exposure machine includes a machine body and a fixed plate. Fixed plates are fixedly connected to both sides of the machine body. A feeding box is fixedly connected to the top of the fixed plate on the left side. An adjustment structure is provided inside the feeding box. A discharge mechanism is provided on the rear side of the feeding box. A collection box is placed on the top of the fixed plate on the right side. An exposure platform is fixedly connected to the top of the machine body. A cover plate is installed on the top of the exposure platform. Inclined plates are fixedly connected to the bottom of the fixed plates. The inner side of the inclined plates is fixedly connected to the machine body.

[0006] This setting, by adjusting the coordination between the structure and the discharge mechanism, can reduce the damage to the PCB board during loading.

[0007] To further improve the design, the discharge mechanism includes a vertical plate and a first baffle. An electric telescopic rod is fixedly connected to the front side of the vertical plate, and a push plate is fixedly connected to the output end of the electric telescopic rod. Multiple rollers are installed below the push plate, with the outer wall of the rollers fitting against the inner wall of the fixed plate. The outer wall of the push plate fits against the first baffle. The bottom of the first baffle is fixedly connected to the fixed plate, and the front side of the push plate is inserted into the feeding box.

[0008] This feature uses multiple rollers to guide the push plate.

[0009] Further improvements include a fixed connection between the bottom of the vertical plate and the fixed plate.

[0010] This feature provides support for the electric telescopic pole.

[0011] Further improvements include an adjustment structure comprising a cylinder, with a second baffle fixedly connected to the outer wall of the cylinder. Both the second baffle and the outer wall of the cylinder are slidably connected to the feeding box, and the front side of the cylinder is threadedly connected to two nuts.

[0012] This setting allows adjustment of the second baffle position based on the PCB board's thickness, facilitating the loading of PCB boards of varying thicknesses.

[0013] Further improvements were made, such that the outer wall of the nut on the rear side abuts against the feeding box.

[0014] This setting allows the cylinder to be locked in place with a nut, restricting its movement.

[0015] The beneficial effects of this utility model are: In this utility model, through the cooperation of the fixed plate and the discharge mechanism, the output end of the electric telescopic rod moves to drive the push plate to move, and at the same time drives multiple rollers to roll. The movement of the push plate can push the bottom PCB board out from the notch on the front side of the feeding box, so as to prevent the PCB board from falling off during the feeding process and reduce the damage to the PCB board.

[0016] By coordinating the feeding box and the adjustment mechanism, loosen the two nuts and then manually move the cylinder up and down. The movement of the cylinder will drive the second baffle to move. When the second baffle can block the second PCB board from the bottom, stop moving the cylinder. Then tighten the two nuts in sequence to fix the position of the cylinder, so that PCB boards of different thicknesses can be fed within a certain range. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 The front view;

[0019] Figure 3 for Figure 2 A partial left-side sectional view;

[0020] Figure 4 for Figure 2 A magnified view of part A in the diagram;

[0021] Figure 5 for Figure 2 A magnified view of part B in the diagram;

[0022] Figure 6 for Figure 2 Partial rear sectional view.

[0023] Explanation of reference numerals in the attached drawings: 1. Machine body, 2. Fixed plate, 3. Collection box, 4. Exposure platform, 5. Feeding box, 6. Discharge mechanism, 601. Vertical plate, 602. Electric telescopic rod, 603. Push plate, 604. Roller, 605. First baffle, 7. Adjustment structure, 701. Cylinder, 702. Second baffle, 703. Nut, 8. Cover plate, 9. Inclined plate. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] See attached document Figure 1-6 In this embodiment, a PCB board exposure machine includes a machine body 1 and a fixing plate 2. The fixing plates 2 are fixedly connected to both sides of the machine body 1. A feeding box 5 is fixedly connected to the top of the left fixing plate 2. The feeding box 5 has an adjustment structure 7 inside. A discharge mechanism 6 is provided on the rear side of the feeding box 5. A collection box 3 is placed on the top of the right fixing plate 2. An exposure platform 4 is fixedly connected to the top of the machine body 1. A cover plate 8 is installed on the top of the exposure platform 4. Inclined plates 9 are fixedly connected to the bottom of the fixing plates 2. The inner side of the inclined plates 9 is fixedly connected to the machine body 1.

[0026] The discharge mechanism 6 includes a vertical plate 601 and a first baffle 605. An electric telescopic rod 602 is fixedly connected to the front side of the vertical plate 601. A push plate 603 is fixedly connected to the output end of the electric telescopic rod 602. Multiple rollers 604 are installed below the push plate 603. The outer wall of the rollers 604 is in contact with the inner wall of the fixed plate 2. The outer wall of the push plate 603 is in contact with the first baffle 605. The bottom of the first baffle 605 is fixedly connected to the fixed plate 2. The front side of the push plate 603 is inserted into the feeding box 5. The movement of the output end of the electric telescopic rod 602 drives the push plate 603 to move, thereby driving the multiple rollers 604 to roll.

[0027] The bottom of the vertical plate 601 is fixedly connected to the fixed plate 2. The adjusting structure 7 includes a cylinder 701. A second baffle 702 is fixedly connected to the outer wall of the cylinder 701. Both the second baffle 702 and the outer wall of the cylinder 701 are slidably connected to the feeding box 5. The front side of the cylinder 701 is threadedly connected to two nuts 703. The outer wall of the rear nut 703 is pressed against the feeding box 5. The movement of the cylinder 701 drives the second baffle 702 to move.

[0028] Working principle:

[0029] When using a PCB exposure machine:

[0030] The operator first determines the thickness of the PCB board to be exposed, adjusts the position of the second baffle 702, loosens the two nuts 703, and then manually moves the cylinder 701 up and down. The movement of the cylinder 701 moves the second baffle 702. When the second baffle 702 can block the second PCB board from the bottom, the operator stops moving the cylinder 701 and then tightens the two nuts 703 in sequence to fix the position of the cylinder 701, so that PCB boards of different thicknesses can be fed within a certain range.

[0031] The operator then places multiple unexposed PCBs into the feeding box 5 and activates the electric telescopic rod 602. The electric telescopic rod 602 is connected to an external PLC controller, and its extension speed can be controlled through programming. The electric telescopic rod 602 is a self-locking type. The movement of the output end of the electric telescopic rod 602 drives the push plate 603 to move, simultaneously causing multiple rollers 604 to roll. The movement of the push plate 603 pushes the bottommost PCB out through the notch at the front of the feeding box 5. Simultaneously, the second baffle 702 blocks the remaining PCBs. The operator then manually removes the pushed-out PCBs and retracts the electric telescopic rod 602, causing the push plate 603 to retract. When the push plate 603 contacts the first baffle 605, the second electric telescopic rod 602 is deactivated, and the upper PCBs fall to the bottom of the feeding box 5. This prevents PCBs from falling during the feeding process, reducing the risk of PCB damage.

[0032] Open cover 8, then place the PCB board into the exposure platform, aligning it perpendicularly with the light path of the exposure lamp inside the platform. Place the film on the PCB board, then close cover 8 and start the machine 1. UV light passes through the light-transmitting area of ​​the film and irradiates the photosensitive dry film on the PCB substrate. The exposed parts decompose and can be dissolved by the developer, while the unexposed parts remain. The exposed parts cross-link and solidify, becoming insoluble in the developer, while the unexposed parts are dissolved. The exposure time is precisely controlled according to factors such as light source intensity, dry film type, and pattern precision. After exposure, close machine 1, then open cover 8 and manually remove the exposed PCB board and place it in collection box 3. Repeat the above operation until all PCB boards have been processed.

[0033] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A PCB board exposure machine, comprising a machine body (1) and a fixing plate (2), wherein the fixing plate (2) is fixedly connected to both sides of the machine body (1), characterized in that: A feeding box (5) is fixedly connected above the fixed plate (2) on the left side. An adjustment structure (7) is provided inside the feeding box (5). A discharge mechanism (6) is provided on the rear side of the feeding box (5). A collection box (3) is placed above the fixed plate (2) on the right side. An exposure platform (4) is fixedly connected above the machine body (1). A cover plate (8) is installed above the exposure platform (4). Inclined plates (9) are fixedly connected below the fixed plate (2). The inner side of the inclined plates (9) is fixedly connected to the machine body (1).

2. The PCB board exposure machine according to claim 1, characterized in that: The discharge mechanism (6) includes a vertical plate (601) and a first baffle (605). An electric telescopic rod (602) is fixedly connected to the front side of the vertical plate (601). A push plate (603) is fixedly connected to the output end of the electric telescopic rod (602). Multiple rollers (604) are installed below the push plate (603). The outer wall of the rollers (604) is in contact with the inner wall of the fixed plate (2). The outer wall of the push plate (603) is in contact with the first baffle (605). The bottom of the first baffle (605) is fixedly connected to the fixed plate (2). The front side of the push plate (603) is inserted into the feeding box (5).

3. The PCB board exposure machine according to claim 2, characterized in that: The bottom of the vertical plate (601) is fixedly connected to the fixed plate (2).

4. The PCB board exposure machine according to claim 1, characterized in that: The adjustment structure (7) includes a cylinder (701), and a second baffle (702) is fixedly connected to the outer wall of the cylinder (701). The second baffle (702) and the outer wall of the cylinder (701) are slidably connected to the feeding box (5). The front side of the cylinder (701) is threadedly connected to two nuts (703).

5. The PCB board exposure machine according to claim 4, characterized in that: The outer wall of the nut (703) on the rear side abuts against the feed box (5).

Images