Printing ink coating device for inner layer of PCB (Printed Circuit Board)

Abstract

The utility model relates to a printed circuit board (PCB) inner layer printing ink coating device, which belongs to the technical field of printing ink coating, and comprises a material collecting box, a material guide hopper, two supports and a coating roller, one side of the material collecting box far away from the ground is fixedly connected with one side of the material guide hopper, the two supports are respectively and fixedly arranged on one side of the material collecting box far away from the ground through bolts, and the coating roller is fixedly arranged on the other side of the material collecting box far away from the ground. The two brackets are distributed in a mirror symmetry manner, and the outer side of the coating roller is mounted on one side of each bracket; and two sets of ink scraping and recycling mechanisms in mirror symmetry are mounted on the side, away from the ground, of the material collecting box. According to the PCB inner layer ink coating device, the function of automatically recycling ink can be provided, the ink on the coating roller can be effectively recycled and reused, waste of the ink is avoided, the production cost is reduced, meanwhile, the ink on the coating roller can be removed in time, drying and curing of the ink are avoided, and the production efficiency is improved. Therefore, the printing ink recovery effect of the existing PCB inner layer printing ink coating device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ink coating, in particular to a PCB inner layer ink coating device. Background Art

[0002] The advanced process of wet film technology highlights its superior characteristics, whether it is liberating production efficiency, improving the quality of production process and reducing production costs. It is a key component necessary for wet film coating production. The appropriate technical parameters of the coating roll, the control of the thickness of the coating layer, and the quality control of the consistency of the film thickness play a decisive role. It is well known that the consistency of wet film thickness distribution is essential for the production of precision circuits, especially when the process requires 2 / 2MIL line width / line spacing, the technical requirements for the coating roll are more stringent.

[0003] Ink is an important material used in printing. It displays patterns and texts on substrates through printing or spraying. Ink is a viscous colloidal fluid, mainly used for various printings such as books and periodicals, packaging and decoration, architectural decoration, and electronic circuit boards.

[0004] PCB inner layer ink coating device is a kind of equipment specially used for inner layer ink of printed circuit board. It is mainly composed of ink supply system, coating head, motion control system and visual inspection system.

[0005] The ink supply system is mainly composed of an ink supply pump, an ink storage tank, a filter, a pressure controller, etc. The ink supply pump extracts ink from the ink storage tank, filters it through a filter, and controls the flow and pressure of the ink through a pressure controller; the coating head is the core part of the PCB inner layer ink coating device, which is usually composed of hundreds of small nozzles, each of which can control the ink spray volume and spray speed. The coating head can be adjusted according to the size and requirements of the PCB to ensure that the ink is evenly coated on the inner layer wires and pads; the motion control system is mainly composed of a motor, a driver, a motion platform, etc. It can control the movement of the coating head in the X and Y directions to achieve accurate coating of the PCB inner layer ink; the visual inspection system is mainly used to detect the coating quality of the PCB inner layer ink. It can shoot the PCB through a high-definition camera, and analyze and process the captured images to determine whether the ink coating is uniform, whether there is any missing coating or over-coating, etc.

[0006] In short, the PCB inner layer ink coating device is a high-tech equipment, which can ensure the precise coating of the PCB inner layer ink, thus ensuring the quality and reliability of the PCB.

[0007] In the process of ink printing, the printing roller of the existing PCB inner layer ink coating device needs to be dipped in ink for printing, so a lot of ink remains on the printing roller, and the coating roller cannot automatically recover the ink during use and needs to be cleaned manually. In addition, the ink on the coating roller cannot be effectively recovered and reused, resulting in a large amount of ink waste and increased production costs. In addition, the residual ink on the printing roller is easy to solidify. If it cannot be removed in time, it is easy to cause the ink to dry and solidify, thereby affecting the printing quality. In addition, due to the influence on the coating effect, it may even cause problems such as uneven coating and missing coating, resulting in the ink recovery effect of the existing PCB inner layer ink coating device to be improved. Utility Model Content

[0008] 1. Technical issues to be solved

[0009] In view of the shortcomings of the prior art, the utility model provides a PCB inner layer ink coating device, which has the advantages of effectively improving the ink recovery effect of the existing PCB inner layer ink coating device, and solves the problem of poor ink recovery effect of the existing PCB inner layer ink coating device.

[0010] (II) Technical solution

[0011] In order to achieve the above-mentioned purpose of effectively improving the ink recovery effect of the existing PCB inner layer ink coating device, the utility model provides the following technical solutions: a PCB inner layer ink coating device, including a collection box, a guide hopper, a bracket and a coating roller, the side of the collection box away from the ground is fixedly connected to one side of the guide hopper, the two brackets are respectively fixedly installed on the side of the collection box away from the ground by bolts, and the two brackets are distributed in a mirror-symmetrical manner, and the outer side of the coating roller is installed on one side of the bracket; two sets of ink scraping recovery mechanisms in a mirror-symmetrical manner are installed on the side of the collection box away from the ground;

[0012] The ink scraping recovery mechanism includes a driving box fixedly installed on the side of the collecting box away from the ground and a driving assembly installed in the driving box, a sliding cylinder is fixedly installed on the side of the driving box away from the collecting box, a transmission assembly connected to the driving assembly is installed in the sliding cylinder, a scraping assembly is installed on the side of the transmission assembly away from the collecting box, an auxiliary sliding assembly is connected between the scraping assembly and the outer side of the sliding cylinder, and the auxiliary sliding assemblies are divided into two groups and are distributed in a mirror-symmetrical manner.

[0013] Furthermore, the drive assembly includes a servo motor, a worm and a worm wheel; one side of the servo motor is fixedly mounted on one side of the drive box, one end of the worm passes through the drive box and is fixedly connected to the output shaft of the servo motor, and the other end is rotatably connected to the inner wall of the drive box through a bearing, and the servo motor drives the worm to rotate to drive the worm wheel engaged with the worm to rotate.

[0014] Furthermore, the transmission assembly includes a threaded rod and a threaded sleeve; one end of the threaded rod passes through the sliding cylinder and the drive box in sequence and extends into the worm gear and is fixedly connected to the worm gear, and the outer side of the other end is threadedly connected to the inner side of the threaded sleeve.

[0015] Furthermore, the scraper assembly includes a lifting push plate and an arc-shaped scraper plate; one side of the lifting push plate is fixedly connected to the side of the threaded sleeve away from the collecting box, and one side of the lifting push plate is fixedly connected to the arc-shaped scraper plate that fits the outer side of the coating roller.

[0016] Furthermore, the outer side of the threaded sleeve is slidably connected to the inner side of the sliding cylinder and slides in close proximity.

[0017] Furthermore, the auxiliary sliding assembly includes a mounting block, a sliding rod, an adjusting moving block and a fixed plate; one side of the mounting block is fixedly installed on the outer side of the sliding cylinder by bolts, and the number of the mounting blocks is two and they are distributed in a mirror-symmetrical manner, the two ends of the sliding rod are respectively fixedly connected to the opposite sides of the two mounting blocks, the inner side of the adjusting moving block and the outer side of the sliding rod are slidably connected and slide in close proximity, one side of the adjusting moving block and one side of the fixed plate are fixedly installed, and the side of the fixed plate away from the aggregate box and the side of the drive box close to the ground are fixedly installed.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model provides a PCB inner layer ink coating device, which has the following beneficial effects:

[0020] The PCB inner layer ink coating device can provide a function of automatically recovering ink through the mutual cooperation of the material guide hopper, the bracket, the coating roller and the ink scraping recovery mechanism on the collecting box, so that the ink on the coating roller can be effectively recovered and reused, thereby avoiding the waste of ink and reducing the production cost. At the same time, the ink on the coating roller can be cleared in time, the drying and solidification of the ink can be avoided, and the coating effect is guaranteed, thereby improving the work efficiency and reducing the tediousness of manual operation, thereby effectively improving the ink recovery effect of the existing PCB inner layer ink coating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 for Figure 1 A cross-sectional schematic diagram of the middle fixed plate connection structure;

[0023] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A part;

[0024] Figure 4 for Figure 2 A three-dimensional schematic diagram of the middle lifting push plate connection structure.

[0025] In the figure: 1 collecting box, 2 guiding hopper, 3 bracket, 4 coating roller, 500 scraper recovery mechanism, 501 driving box, 5021 servo motor, 5022 worm, 5023 worm wheel, 503 sliding cylinder, 5041 threaded rod, 5042 threaded sleeve, 5051 lifting push plate, 5052 arc scraper plate, 5061 mounting block, 5062 sliding rod, 5063 adjusting moving block, 5064 fixing plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4 The utility model provides a technical solution: a PCB inner layer ink coating device, comprising a collecting box 1, a guide hopper 2, a bracket 3 and a coating roller 4, the collecting box 1 is fixedly connected to one side of the guide hopper 2 on the side away from the ground, two brackets 3 are respectively fixedly installed on the side of the collecting box 1 away from the ground by bolts, and the two brackets 3 are distributed in a mirror-symmetrical manner, and the outer side of the coating roller 4 is installed on one side of the bracket 3; two sets of scraping ink recovery mechanisms 500 in a mirror-symmetrical manner are installed on the side of the collecting box 1 away from the ground;

[0028] Through the mutual cooperation between the guide hopper 2, the bracket 3, the coating roller 4 and the ink scraping recovery mechanism 500 on the collecting box 1, a function of automatic ink recovery can be provided, so that the ink on the coating roller 4 can be effectively recovered and reused, thereby avoiding the waste of ink and reducing production costs. At the same time, the ink on the coating roller 4 can be cleared in time, avoiding the drying and solidification of the ink and ensuring the coating effect, thereby improving work efficiency and reducing the tediousness of manual operation, thereby effectively improving the ink recovery effect of the existing PCB inner layer ink coating device.

[0029] In this embodiment, the ink scraping recovery mechanism 500 is a structure for automatically recovering ink on the coating roller 4.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the ink scraping recovery mechanism 500 includes a driving box 501 fixedly installed on the side of the collecting box 1 away from the ground and a driving assembly installed in the driving box 501, a sliding cylinder 503 is fixedly installed on the side of the driving box 501 away from the collecting box 1, a transmission assembly connected to the driving assembly is installed in the sliding cylinder 503, a scraping assembly is installed on the side of the transmission assembly away from the collecting box 1, an auxiliary sliding assembly is connected between the scraping assembly and the outer side of the sliding cylinder 503, and the auxiliary sliding assemblies are divided into two groups and are distributed in a mirror-symmetrical manner.

[0031] It should be noted that the driving assembly includes a servo motor 5021, a worm 5022 and a worm wheel 5023; one side of the servo motor 5021 is fixedly mounted on one side of the driving box 501, one end of the worm 5022 passes through the driving box 501 and is fixedly connected to the output shaft of the servo motor 5021, and the other end is rotatably connected to the inner wall of the driving box 501 through a bearing. The servo motor 5021 drives the worm 5022 to rotate, thereby driving the worm wheel 5023 meshing with the worm 5022 to rotate, so as to be able to stably drive the transmission assembly to rotate.

[0032] It can be understood that the transmission assembly includes a threaded rod 5041 and a threaded sleeve 5042; one end of the threaded rod 5041 passes through the sliding cylinder 503 and the driving box 501 in sequence and extends into the worm gear 5023 and is fixedly connected to the worm gear 5023, and the outer side of the other end is threadedly connected to the inner side of the threaded sleeve 5042 in order to stably push the scraper assembly to move.

[0033] In addition, the scraper assembly includes a lifting push plate 5051 and an arc-shaped scraper plate 5052; one side of the lifting push plate 5051 is fixedly connected to the side of the threaded sleeve 5042 away from the collecting box 1, and one side of the lifting push plate 5051 is fixedly connected to the arc-shaped scraper plate 5052 that fits the outer side of the coating roller 4, in order to facilitate the scraping and recovery of the residual ink on the coating roller 4.

[0034] In this embodiment, the outer side of the threaded sleeve 5042 is slidably connected and slides in close proximity with the inner side of the sliding cylinder 503 , so as to allow the threaded sleeve 5042 to move more stably in the sliding cylinder 503 .

[0035] It should also be noted that the auxiliary sliding assembly includes a mounting block 5061, a sliding rod 5062, an adjusting moving block 5063 and a fixed plate 5064; one side of the mounting block 5061 is fixedly installed on the outer side of the sliding cylinder 503 by bolts, and the number of mounting blocks 5061 is two and they are distributed in a mirror-symmetrical manner, the two ends of the sliding rod 5062 are fixedly connected to the opposite sides of the two mounting blocks 5061, the inner side of the adjusting moving block 5063 and the outer side of the sliding rod 5062 are slidably connected and slide in close proximity, one side of the adjusting moving block 5063 and one side of the fixed plate 5064 are fixedly installed, and the side of the fixed plate 5064 away from the aggregate box 1 is fixedly installed with the side of the driving box 501 close to the ground, so as to be able to stably drive the lifting push plate 5051 to move up and down, and make the arc-shaped ink scraping plate 5052 fit with the outer side of the coating roller 4, so as to scrape the outer side of the coating roller 4 and recover the ink remaining on the coating roller 4.

[0036] The working principle of the above embodiment is:

[0037] When it is necessary to scrape the ink on the coating roller 4, the two servo motors 5021 are first controlled synchronously to start, and then the worm 5022 drives the worm wheel 5023 engaged thereon to rotate under the rotation support of the bearing, and drives the threaded rod 5041 to rotate under the rotation support of the bearing. Since the threaded sleeve 5042 is slidably connected to the sliding cylinder 503 and can only move inside the sliding cylinder 503, the threaded sleeve 5042 moves on the outside of the threaded rod 5041 under the thrust of the rotation of the inner thread. It can perform stable lifting and lowering movement. Because the adjusting moving block 5063 is connected with the lifting push plate 5051 through the fixed plate 5064, the lifting push plate 5051 drives the fixed plate 5064 to move when it moves, and it can perform stable lifting and lowering movement under the cooperation of the sliding connection between the adjusting moving block 5063 and the sliding rod 5062. When the arc-shaped scraper plate 5052 is in contact with the coating roller 4, the ink on the coating roller 4 can be scraped off when the coating roller 4 rotates, and it can be diverted to the collecting box 1 through the guide hopper 2 for recovery.

[0038] Compared with the prior art: the PCB inner layer ink coating device, through the mutual cooperation between the guide hopper 2, the bracket 3, the coating roller 4 and the ink scraping recovery mechanism 500 on the collecting box 1, can provide a function of automatic ink recovery, so that the ink on the coating roller 4 can be effectively recovered and reused, avoiding the waste of ink and reducing production costs. At the same time, the ink on the coating roller 4 can be removed in time to avoid the drying and solidification of the ink and ensure the coating effect, thereby improving work efficiency and reducing the tediousness of manual operation, thereby effectively improving the ink recovery effect of the existing PCB inner layer ink coating device and solving the problem of poor ink recovery effect of the existing PCB inner layer ink coating device.

[0039] The electrical components appearing in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing publicly available power connection technology and power supply are also common knowledge in the field, so this application will not go into details.

[0040] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0041] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A PCB inner layer ink coating device, comprising a material collecting box (1), a material guide hopper (2), a bracket (3) and a coating roller (4), wherein the material collecting box (1) is fixedly connected to one side of the material guide hopper (2) on the side away from the ground, and two brackets (3) are respectively fixedly installed on the side of the material collecting box (1) away from the ground by bolts, and the two brackets (3) are distributed in a mirror-symmetrical manner, and the outer side of the coating roller (4) is installed on one side of the bracket (3); characterized in that: Two sets of ink scraping and recovery mechanisms (500) are installed in a mirror-symmetrical manner on the side of the collecting box (1) away from the ground; The ink scraping recovery mechanism (500) comprises a driving box (501) fixedly mounted on the side of the collecting box (1) away from the ground and a driving assembly installed in the driving box (501); a sliding cylinder (503) is fixedly mounted on the side of the driving box (501) away from the collecting box (1); a transmission assembly connected to the driving assembly is installed in the sliding cylinder (503); a scraping assembly is installed on the side of the transmission assembly away from the collecting box (1); an auxiliary sliding assembly is connected between the scraping assembly and the outer side of the sliding cylinder (503); and the auxiliary sliding assembly is divided into two groups and is distributed in a mirror-symmetrical manner.

2. The PCB inner layer ink coating device according to claim 1, characterized in that: The driving assembly comprises a servo motor (5021), a worm (5022) and a worm wheel (5023); one side of the servo motor (5021) is fixedly mounted on one side of the driving box (501); one end of the worm (5022) passes through the driving box (501) and is fixedly connected to the output shaft of the servo motor (5021); the other end is rotatably connected to the inner wall of the driving box (501) via a bearing; the servo motor (5021) drives the worm (5022) to rotate, thereby driving the worm wheel (5023) meshed with the worm (5022) to rotate.

3. The PCB inner layer ink coating device according to claim 2, characterized in that: The transmission assembly comprises a threaded rod (5041) and a threaded sleeve (5042); one end of the threaded rod (5041) passes through the sliding cylinder (503) and the driving box (501) in sequence and extends into the worm gear (5023) and is fixedly connected to the worm gear (5023), and the outer side of the other end is threadedly connected to the inner side of the threaded sleeve (5042).

4. The PCB inner layer ink coating device according to claim 3, characterized in that: The scraper assembly comprises a lifting push plate (5051) and an arc-shaped scraper plate (5052); one side of the lifting push plate (5051) is fixedly connected to a side of the threaded sleeve (5042) away from the collecting box (1), and one side of the lifting push plate (5051) is fixedly connected to a arc-shaped scraper plate (5052) that fits the outer side of the coating roller (4).

5. The PCB inner layer ink coating device according to claim 3, characterized in that: The outer side of the threaded sleeve (5042) and the inner side of the sliding cylinder (503) are slidably connected and slide in close contact.

6. The PCB inner layer ink coating device according to claim 4, characterized in that: The auxiliary sliding assembly comprises a mounting block (5061), a sliding rod (5062), an adjusting moving block (5063) and a fixing plate (5064); one side of the mounting block (5061) is fixedly mounted on the outer side of the sliding cylinder (503) by bolts, and the number of the mounting blocks (5061) is two and they are distributed in a mirror-symmetrical manner, the two ends of the sliding rod (5062) are respectively fixedly connected to the opposite sides of the two mounting blocks (5061), the inner side of the adjusting moving block (5063) and the outer side of the sliding rod (5062) are slidably connected and slide in close proximity, one side of the adjusting moving block (5063) and one side of the fixing plate (5064) are fixedly mounted, and the side of the fixing plate (5064) away from the aggregate box (1) is fixedly mounted on the side of the driving box (501) close to the ground.

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