Tape unmasking mechanism

Abstract

The utility model relates to PCB board uncovering film technical field, and disclose adhesive tape uncovering film mechanism, including base and stand, both ends of base all have the sliding fit of stand, the inside upper and lower end of stand all is provided with uncovering film mechanism, the inside middle part position fixed mounting of stand has crosspiece, the end part of crosspiece is provided with limit mechanism, the uncovering film mechanism includes drive cylinder no. 2, drive cylinder no. 2 installs in the inside face of stand. This kind of adhesive tape uncovering film mechanism, through drive cylinder no. 2 and drive cylinder no. 3 perpendicular direction up and down movement, can accurate control and regulation the vertical height of bearing plate and film starting wheel, can according to PCB board film layer thickness, pasting strength flexible adjustment and fit pressure, avoid damaging PCB board or uncovering film failure, can also through the stable force of perpendicular direction, make adhesive tape closely fit film layer with the help of film starting wheel rubber antiskid layer, strengthen the adhesion friction, cooperate adhesive tape sustained transmission and realize film layer complete peeling.

Description

Technical Field

[0001] This utility model relates to the field of PCB board film removal technology, specifically a tape removal mechanism. Background Technology

[0002] In the PCB manufacturing process, a protective film is usually applied to the surface of the PCB to protect the circuitry and prevent scratches or contamination during processing. After the PCB completes core processes such as drilling, film application, and exposure, this protective film needs to be precisely peeled off. This process is called the PCB film peeling process, which is a key step to ensure the subsequent assembly accuracy and product quality of the PCB.

[0003] Currently, the commonly used PCB board film removal devices in the industry are mainly divided into two categories: manual film removal and semi-automatic mechanical film removal. Manual film removal relies on operators to manually tear the protective film, which is not only labor-intensive and inefficient, making it difficult to meet the needs of mass production, but also prone to damage to the circuits on the PCB board surface due to uneven manual operation force, or leaving residual film due to deviation in tearing angle, affecting the normal progress of subsequent soldering, assembly and other processes.

[0004] While existing semi-automatic mechanical film peeling devices have replaced manual operation to some extent, they still have significant technical shortcomings: First, most devices can only peel the film off one side of the PCB board. If it is necessary to peel the film off the upper and lower surfaces of the PCB board, secondary positioning and adjustment are required, which is cumbersome and prone to errors due to repeated positioning, resulting in a decrease in film peeling accuracy. Second, the position adjustment of the film peeling mechanism mostly adopts a single drive structure, which makes it difficult to flexibly adjust the bonding pressure according to the film adhesion strength of PCB boards of different thicknesses. Excessive pressure will damage the PCB board substrate, while insufficient pressure will not achieve complete film peeling, resulting in poor adaptability.

[0005] Therefore, it is necessary to propose a tape peeling mechanism. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a tape peeling mechanism, which has the advantages of enabling simultaneous double-sided peeling of PCB boards and precise adjustable peeling pressure, thus solving the problems mentioned in the background technology.

[0007] This utility model provides the following technical solution: a tape peeling mechanism, including a base and a column: Both ends of the base are slidably fitted with columns, and the upper and lower ends of the inner side of the columns are provided with film-removing mechanisms. A crossbar is fixedly installed at the middle position of the inner side of the columns, and a limit mechanism is provided at the end of the crossbar. The film-unwrapping mechanism includes a second drive cylinder, which is installed on the inner side of the column. A third drive cylinder is fixedly installed at the output end of the second drive cylinder, and a support plate is fixedly installed at the output end of the third drive cylinder. An unwinding reel and a take-up reel are respectively provided at both ends of the side of the support plate. At least one set of auxiliary rollers is installed and arranged on the side of the support plate. A film-lifting wheel is installed at the bottom of the side of the support plate. Adhesive tape is wound on the unwinding reel, the take-up reel, the auxiliary rollers, and the film-lifting wheel.

[0008] Preferably, both ends of the bearing plate are rotatably fitted with rotating shafts, and the two sets of rotating shafts are detachably connected to the unwinding reel and the rewinding reel, respectively. Both ends of the other side of the bearing plate are equipped with drive motors, and the two sets of drive motors are fixedly installed with the rotating shafts, respectively.

[0009] Preferably, a sensing sensor is fixedly installed on the side of the support plate, and the sensing end of the sensing sensor is facing the tape wound on the take-up reel.

[0010] Preferably, the limiting mechanism includes a drive cylinder, which is installed at the end of the crossbar, and a limiting block is fixedly installed at the output end of the drive cylinder.

[0011] Preferably, the upper end of the column is provided with a crossbeam, and the outer surface of the crossbeam slides in contact with the interior of the column.

[0012] Preferably, a PCB board is disposed between the columns, and the PCB board is located between the film peeling mechanism.

[0013] Preferably, the outer surface of the film-forming wheel is covered with a rubber anti-slip layer, and the surface of the rubber anti-slip layer is in contact with the surface of the PCB board.

[0014] Preferably, the upper surface of the base is provided with a sliding groove that is adapted to the column, a wear-resistant bushing is fixedly installed on the inner side wall of the sliding groove, and a slider that cooperates with the sliding groove is fixedly installed at the bottom of the column, and the slider slides in contact with the wear-resistant bushing.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This tape peeling mechanism, through the vertical movement of drive cylinders two and three, can precisely control the vertical height of the support plate and the film-lifting roller. It can flexibly adjust the bonding pressure according to the thickness and adhesion strength of the PCB board film layer, avoiding damage to the PCB board or failure of film peeling. At the same time, through the stabilizing force in the vertical direction, the tape adheres tightly to the film layer with the help of the anti-slip rubber layer of the film-lifting roller, enhancing the adhesion friction. Combined with the continuous transmission of the tape, it can achieve complete peeling of the film layer, effectively solving the problem of residual film. At the same time, combined with the sliding adjustment of the base and column, it can adapt to PCB boards of different thicknesses and sizes in the vertical film peeling dimension, improving the versatility of the device.

[0016] This type of tape peeling mechanism features a simple vertical drive logic through drive cylinders two and three. The peeling position can be adjusted simply by controlling the extension and retraction of the cylinders, reducing operational complexity. Furthermore, the vertical layout reduces horizontal interference of transmission components, making it easier for operators to inspect, disassemble, and replace tape on the unwinding and rewinding reels, thus making maintenance more convenient. The sensing sensor provides more accurate vertical monitoring of the tape remaining on the rewinding reel, providing timely reminders for replacement to reduce downtime. In addition, the limit mechanism ensures precise positioning of the PCB board. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model; Figure 2 This is a schematic diagram showing the distribution structure of the limiting mechanism and the film-removing mechanism of this utility model; Figure 3 This is a detailed structural diagram of the limiting mechanism and the film-removing mechanism of this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 1. Base; 2. Column; 3. Crossbeam; 4. PCB board; 5. Crossbar; 6. Limiting mechanism; 610. Drive cylinder one; 620. Limiting block; 7. Film peeling mechanism; 710. Drive cylinder two; 711. Drive cylinder three; 720. Drive motor; 730. Take-up reel; 740. Unwrap reel; 750. Adhesive tape; 760. Auxiliary roller; 770. Sensor; 780. Film lifting roller; 790. Support plate. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Please see Figure 1-3 The tape peeling mechanism includes a base 1 and a column 2. Both ends of the base 1 are slidably fitted with columns 2. The upper and lower ends of the inner side of the columns 2 are provided with film-removing mechanisms 7. A crossbar 5 is fixedly installed in the middle of the inner side of the columns 2. A limit mechanism 6 is provided at the end of the crossbar 5. The film-unwrapping mechanism 7 includes a second drive cylinder 710, which is mounted on the inner side of the column 2. A third drive cylinder 711 is fixedly mounted at the output end of the second drive cylinder 710, and a support plate 790 is fixedly mounted at the output end of the third drive cylinder 711. A unwinding reel 740 and a take-up reel 730 are respectively provided at both ends of the side of the support plate 790. At least one set of auxiliary rollers 760 is arranged on each side of the support plate 790. A film-lifting wheel 780 is mounted on the bottom side of the support plate 790. Adhesive tape 750 is wound around the unwinding reel 740, the take-up reel 730, the auxiliary rollers 760, and the film-lifting wheel 780. The base 1 and the column 2 are adjusted by sliding to accommodate PCB boards 4 of different sizes. The film peeling mechanism 7 at the upper and lower ends of the inner side of the column 2 is the core execution component, and the limiting mechanism 6 at the end of the crossbar 5 is used for positioning the PCB board 4. In the film peeling mechanism 7, the second drive cylinder 710 drives the third drive cylinder 711 to move vertically as a whole. The third drive cylinder 711 further pushes the support plate 790 to rise and fall vertically, so that the film lifting wheel 780 adheres to the film layer of the PCB board 4. At the same time, the unwinding reel 740 releases the tape 750. After being guided by the auxiliary roller 760, the tape 750 adheres to the film layer through the film lifting wheel 780. Finally, the waste tape 750 is recycled by the rewinding reel 730.

[0022] Specifically, through the sliding adjustment of the double columns 2 and the layout of the double film-removing mechanism 7, it can adapt to multiple specifications of PCB boards 4 and realize synchronous film removal on the upper and lower surfaces. The dual vertical drive of the second drive cylinder 710 and the third drive cylinder 711 ensures that the position of the film-lifting roller 780 is precise and controllable, and the auxiliary roller 760 ensures the stable transmission of the tape 750, thereby improving the efficiency and accuracy of film removal.

[0023] like Figure 3 As shown, in this embodiment, both ends of the support plate 790 are rotatably fitted with rotating shafts, and the two sets of rotating shafts are detachably connected to the unwinding reel 730 and the take-up reel 740, respectively. Drive motors 720 are installed at both ends of the other side of the support plate 790, and the two sets of drive motors 720 are fixedly installed to the rotating shafts. When the drive motor 720 is powered on, it drives the rotating shaft to rotate. The unwinding reel 740, which is detachably connected to the rotating shaft, rotates with the rotating shaft to release new tape 750, while the take-up reel 730 rotates with the rotating shaft to collect waste tape 750 with the adhesive film layer. The detachable design of the unwinding reel 740 and the take-up reel 730 makes it easy to replace the tape 750.

[0024] Specifically, the drive motor 720 provides stable power for the transmission of the tape 750, ensuring that the unwinding and rewinding speeds of the tape 750 match the film-unwinding rhythm, thus preventing the tape 750 from becoming loose or broken due to stretching. The detachable connection structure simplifies the tape 750 replacement process, reduces equipment downtime, and improves operational convenience.

[0025] like Figure 3As shown, in this embodiment, a sensing sensor 770 is fixedly mounted on the side of the support plate 790, and the sensing end of the sensing sensor 770 is directly opposite the tape 750 wound on the unwinding reel 740. The sensing sensor 770 continuously monitors the winding thickness of the tape 750 on the unwinding reel 740. When the remaining amount of tape 750 decreases to a preset threshold, the sensor sends a signal to prompt the operator to replace the tape 750. Specifically, the sensing sensor 770 is a diffuse reflection photoelectric sensor, such as the E3Z-D61 type.

[0026] Specifically, real-time monitoring of the remaining 750 units of tape prevents interruptions in film removal due to tape depletion, ensuring continuous equipment operation; precise threshold warnings reduce the frequency of manual inspections, lower the probability of operational errors, and improve the automation level and operational stability of the equipment.

[0027] like Figure 3 As shown, the limiting mechanism 6 in this embodiment includes a drive cylinder 610, which is installed at the end of the crossbar 5. A limiting block 620 is fixedly installed at the output end of the drive cylinder 610. After the PCB board 4 is placed between the columns 2, the drive cylinder 610 extends and retracts to push the limiting block 620 to move vertically until the limiting block 620 is in contact with the edge of the PCB board 4, thereby fixing the PCB board 4 in the vertical direction.

[0028] Specifically, through the precise drive of the drive cylinder 610, the limit block 620 moves and positions the PCB board 4, ensuring the stable adhesion between the film-lifting roller 780 and the film layer, and improving the film removal quality.

[0029] like Figure 1 As shown, in this embodiment, a crossbeam 3 is provided at the upper end of the column 2, and the outer surface of the crossbeam 3 slides in contact with the interior of the column 2. When it is necessary to adjust the distance between the two columns 2 according to the size of the PCB board 4, drive the column 2 so that its bottom slider moves along the sliding groove of the base 1. During this process, the upper end of the column 2 slides synchronously on the outer surface of the crossbeam 3. The crossbeam 3 connects the two columns 2 laterally to form a stable frame structure, which counteracts the tilting or swaying tendency that may occur when the column 2 slides due to the force on one side, and ensures that the column 2 always moves smoothly along the direction of the sliding groove.

[0030] Specifically, the sliding fit design of the crossbeam 3 and the column 2 can effectively constrain the sliding trajectory of the column 2, prevent it from shifting, getting stuck or tilting during the spacing adjustment process, and ensure the stable sliding of the column 2; at the same time, the crossbeam 3 forms a transverse support structure.

[0031] like Figure 1 As shown, in this embodiment, a PCB board 4 is disposed between the columns 2, and the PCB board 4 is located between the film peeling mechanisms 7. The PCB board 4 is placed in the working area between the columns 2 and is located in the middle of the upper and lower film peeling mechanisms 7. The film lifting rollers 780 of the upper and lower film peeling mechanisms 7 correspond to the upper and lower surface film layers of the PCB board 4, respectively, and the film is peeled off on both sides simultaneously through synchronous drive.

[0032] Specifically, the centered layout of PCB board 4 allows for simultaneous double-sided film removal, significantly shortening the single film removal time and improving batch processing efficiency; at the same time, it avoids the problem of uneven stress on PCB board 4 that may be caused by single-sided film removal, ensuring the structural integrity of PCB board 4 during the processing.

[0033] like Figure 3 As shown, the outer surface of the film-forming wheel 780 in this embodiment is covered with a rubber anti-slip layer, and the surface of the rubber anti-slip layer is in contact with the surface of the PCB board 4. When the film-removing roller 780 adheres to the 4 film layers of the PCB board, the rubber anti-slip layer increases the contact area with the film layer through its own elastic deformation, ensuring that the tape 750 can stably adhere to the film layer and peel it off.

[0034] Specifically, the rubber anti-slip layer design effectively solves the problem of tape 750 slipping when peeling the film, ensuring thorough film peeling and reducing residual film. The elastic properties of the rubber material can buffer the pressure of the film peeling roller 780 on the PCB board 4, avoiding damage to the surface of the PCB board 4.

[0035] like Figure 1 As shown, in this embodiment, the upper surface of the base 1 is provided with a sliding groove that matches the column 2. A wear-resistant bushing is fixedly installed on the inner side wall of the sliding groove. A slider that mates with the sliding groove is fixedly installed on the bottom of the column 2, and the slider slides in contact with the wear-resistant bushing. When adjusting the spacing of the columns 2, the slider at the bottom of the column 2 slides along the sliding groove of the base 1. The wear-resistant bushing on the inner side wall of the sliding groove directly contacts the slider, reducing the sliding friction between the slider and the base 1.

[0036] Specifically, the wear-resistant bushing reduces the wear between the slider and the base 1, extending the service life of the device; at the same time, it reduces sliding resistance, making the adjustment of the column 2 spacing smoother and easier, ensuring convenient operation, and avoiding the problem of the column 2 sliding and getting stuck due to wear.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tape peeling mechanism, comprising a base (1) and a column (2), characterized in that: The base (1) has columns (2) slidably fitted at both ends. The upper and lower ends of the inner side of the column (2) are provided with a film-removing mechanism (7). A crossbar (5) is fixedly installed at the middle position of the inner side of the column (2). A limit mechanism (6) is provided at the end of the crossbar (5). The film-unwrapping mechanism (7) includes a second driving cylinder (710), which is installed on the inner side of the column (2). A third driving cylinder (711) is fixedly installed at the output end of the second driving cylinder (710). A support plate (790) is fixedly installed at the output end of the third driving cylinder (711). An unwinding reel (740) and a take-up reel (730) are respectively provided at both ends of the side of the support plate (790). At least one set of auxiliary rollers (760) is installed on the side of the support plate (790). A film-lifting wheel (780) is installed at the bottom of the side of the support plate (790). Adhesive tape (750) is wound on the unwinding reel (740), the take-up reel (730), the auxiliary rollers (760), and the film-lifting wheel (780).

2. The tape peeling mechanism according to claim 1, characterized in that: The bearing plate (790) has rotating shafts inside both ends, and the two sets of rotating shafts are detachably connected to the unwinding reel (740) and the winding reel (730) respectively. The bearing plate (790) has drive motors (720) installed at both ends on the other side, and the two sets of drive motors (720) are fixedly installed to the rotating shafts respectively.

3. The tape peeling mechanism according to claim 1, characterized in that: A sensor (770) is fixedly installed on the side of the support plate (790), and the sensing end of the sensor (770) is facing the tape (750) wrapped on the unwinding reel (740).

4. The tape peeling mechanism according to claim 1, characterized in that: The limiting mechanism (6) includes a drive cylinder (610), which is installed at the end of the crossbar (5), and a limiting block (620) is fixedly installed at the output end of the drive cylinder (610).

5. The tape peeling mechanism according to claim 1, characterized in that: The upper end of the column (2) is provided with a crossbeam (3), and the outer surface of the crossbeam (3) slides in conjunction with the interior of the column (2).

6. The tape peeling mechanism according to claim 1, characterized in that: A PCB board (4) is provided between the columns (2), and the PCB board (4) is located between the film peeling mechanism (7).

7. The tape peeling mechanism according to claim 1, characterized in that: The outer surface of the film-forming wheel (780) is covered with a rubber anti-slip layer, and the surface of the rubber anti-slip layer is in contact with the surface of the PCB board (4).

8. The tape peeling mechanism according to claim 1, characterized in that: The upper surface of the base (1) is provided with a sliding groove that is compatible with the column (2). A wear-resistant bushing is fixedly installed on the inner side wall of the sliding groove. A slider that cooperates with the sliding groove is fixedly installed at the bottom of the column (2), and the slider slides in contact with the wear-resistant bushing.

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