PCB edge rubber coating device

Abstract

The utility model discloses a PCB (printed circuit board) edge rubber coating device, relates to the technical field of PCB processing, and solves the technical problems that the existing PCB edge rubber coating can only realize rubber coating on two side edges during single sliding of a PCB, the workload is increased due to multiple sliding, and meanwhile, breakpoints possibly appear to influence subsequent processing. A motor in a rack can be controlled through a sliding driving rod, an adjusting rod and a pressure sensor, when the motor is started, a driving gear can promote a driving rack to slide, then a gummed paper frame slides towards the two sides, when the gummed paper frame makes contact with the adjusting rod, the motor stops, in the sliding process, the gummed paper frame wraps materials on the surface of a PLC plate, and the PLC plate continuously slides; the adhesive tape frame rotates, the two sides of the PLC board are wrapped, when the PLC board is separated from the driving rod, the spring is pulled to drive the adhesive tape frame to reset, and when the PLC board is separated from the adhesive tape frame area, the four sides are all wrapped by materials, and therefore four-side wrapping can be achieved through single-time conveying, and rapidness is achieved relatively.

Description

Technical Field

[0001] This utility model belongs to the field of PCB board processing and relates to encapsulation technology, specifically a device for encapsulating the edge of a PCB board. Background Technology

[0002] PCB edge wrapping usually refers to the process of wrapping around the four sides of a PCB board. The wrapping can be done with metal (such as copper, aluminum, or other metal materials) or other materials such as insulating materials.

[0003] The reference patent title is: A PCB board edge coating device (patent publication number: CN216123048U). Through a movable adhesive washer and a rotating discharge roller, the PCB board moves on the surface of the discharge roller and can be coated on both sides after contacting the adhesive washer. This PCB board edge coating device can improve production efficiency and reduce manual labor intensity.

[0004] However, the following problems exist when implementing the above technical solutions: In the above solutions, the PCB board can only achieve edge coating on both sides in a single sliding motion. However, edge coating of the PCB board generally requires covering all four sides. Using the above solutions, the PCB board can only achieve edge coating on both sides in a single motion. As a result, a single PCB board needs to be moved twice, and the coating on the four sides is intermittent, which may leave gaps. It is difficult to ensure that the edges of the PCB board are completely covered, which may affect the subsequent PCB board processing steps.

[0005] Therefore, this utility model proposes a PCB board edge coating device. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a PCB edge coating device. This device solves the problem that existing PCB edge coating methods can only achieve coating on both sides of the PCB edge in a single sliding motion, increasing workload with multiple sliding operations and potentially causing breakage that affects subsequent processing.

[0007] To achieve the above objectives, a PCB board edge coating device is provided according to an embodiment of the first aspect of this utility model, comprising:

[0008] Two adhesive tape holders and an adjusting rod, both of which are slidably disposed inside the frame;

[0009] Each adhesive tape holder surface is fixedly connected to a drive rack; a tension spring is fixedly connected between the drive rack and the frame.

[0010] A drive rod is slidably disposed inside the frame, and a return spring is fixedly connected between the drive rod and the frame. The cross-section of the drive rod is a right-angled trapezoid, and the height of the side closer to the adhesive tape holder is higher than the height of the other side. A drive gear is rotatably connected to the end of the drive rod away from the inclined side.

[0011] A drive wheel is rotatably mounted inside the frame. The drive wheel is detachably connected to the drive gear. The distance between the drive rack and the drive gear is equal to the distance between the drive wheel and the drive wheel. A drive assembly is provided between the drive wheel, the adjusting rod, and the frame.

[0012] Optionally, the surface of the drive wheel is provided with a locking groove, and the surface of the drive rod is fixedly connected with a locking post, wherein the locking groove and the locking post are adapted to each other.

[0013] Optionally, the drive assembly includes a motor fixedly mounted inside the frame, with one end of the motor output shaft fixedly connected to a drive wheel.

[0014] Optionally, pressure sensors are fixedly connected inside the locking groove and on the adjusting rod near the drive rack; a PLC controller is fixedly connected inside the frame, the pressure sensors are electrically connected to the input terminal of the PLC controller, and the output terminal of the PLC controller is electrically connected to the motor control circuit.

[0015] Optionally, a threaded rod is rotatably connected inside the frame, the threaded rod is threadedly connected to the adjusting rod, and the distance between the threaded rod and the adhesive tape holder is greater than zero.

[0016] Optionally, a control rod is slidably connected to the surface of the threaded rod, a protruding rod is fixedly connected to the surface of the control rod, and a plurality of control shafts are fixedly connected to the surface of the frame, with the protruding rod contacting the adjacent control shaft.

[0017] Optionally, the threaded rod has a sliding groove on its surface, and a sliding column is fixedly connected inside the control rod, with the sliding groove and the sliding column being adapted to each other.

[0018] Optionally, a sliding spring is fixedly connected between the sliding groove and the sliding column, and the free length of the sliding spring is equal to the distance between the sliding column and the sliding groove.

[0019] Optionally, a shearing block is slidably connected inside the frame, and two shearing rods are fixedly connected to the shearing block near the drive rod. The two shearing rods are symmetrically arranged relative to the drive rod, and the end of the shearing rod near the drive rod is in contact with the drive rod. A connecting belt is fixedly connected between the shearing block and the drive rod.

[0020] Optionally, the cross-sections of the shear bars are all triangular, and the vertices of the two shear bars are in contact.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: The sliding drive rod, adjusting rod, and pressure sensor can control the motor inside the frame. When the motor starts, the drive gear causes the drive rack to slide, which in turn causes the adhesive tape holder to slide to both sides. When the adhesive tape holder contacts the adjusting rod, the motor stops. During the sliding process, the adhesive tape holder wraps the material on the surface of the PLC board. As the PLC board continues to slide, the adhesive tape holder rotates, and both sides of the PLC board are wrapped. When the PLC board disengages from the drive rod, the drive rod will reset, at which point the pull spring will cause the adhesive tape holder to reset, and one side of the PLC board will be wrapped. When the PLC board leaves the adhesive tape holder area, all four sides are wrapped with material. Thus, wrapping on all four sides can be achieved in a single transfer, which is relatively faster. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural view of the present invention;

[0023] Figure 2 This is a three-dimensional sectional view of the threaded rod of this utility model;

[0024] Figure 3 For the present utility model Figure 2 Enlarged view of the local structure at point A;

[0025] Figure 4 For the present utility model Figure 2 Enlarged view of the local structure at point B;

[0026] Figure 5 This is a three-dimensional sectional view of the connecting strip of this utility model;

[0027] Figure 6 For the present utility model Figure 5 Enlarged view of the local structure at point C;

[0028] Figure 7 This is a three-dimensional sectional view of the drive rod of this utility model;

[0029] Figure 8 For the present utility model Figure 7 Enlarged view of the local structure at point D.

[0030] In the diagram: 1. Frame;

[0031] 21. Adhesive tape holder; 22. Adjusting rod; 23. Drive rack; 24. Drive rod; 25. Return spring; 26. Drive gear; 27. Drive wheel;

[0032] 31. Snap-fit ​​groove; 32. Snap-fit ​​column; 33. Pressure sensor;

[0033] 41. Threaded rod; 42. Control rod; 43. Protruding rod; 44. Control shaft; 45. Sliding groove; 46. Sliding column; 47. Sliding spring;

[0034] 51. Shearing block; 52. Shearing rod; 53. Connecting belt. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] like Figure 1-8 As shown, a PCB board edge coating device includes...

[0037] Two adhesive tape holders 21 and an adjusting rod 22 are slidably disposed inside the frame 1. The adhesive tape holders 21 are detachably connected to a roll of adhesive-coated material.

[0038] It should be noted that the internal structure of the frame 1 is the same as that of the frame 1 in the reference patent, which drives the PLC board to slide.

[0039] Each adhesive tape holder 21 is fixedly connected to a drive rack 23; a tension spring is fixedly connected between the drive rack 23 and the frame 1.

[0040] A drive rod 24 is slidably disposed inside the frame 1. A return spring 25 is fixedly connected between the drive rod 24 and the frame 1. The cross-section of the drive rod 24 is a right trapezoid, and the height of the side closer to the adhesive tape holder 21 is higher than the height of the other side. A drive gear 26 is rotatably connected to the end of the drive rod 24 away from the inclined side.

[0041] It should be noted that the two drive racks 23 are symmetrically arranged relative to the drive gear 26;

[0042] A drive wheel 27 is rotatably mounted inside the frame 1. A locking groove 31 is formed on the surface of the drive wheel 27. A locking post 32 is fixedly connected to the surface of the drive rod 24. The locking groove 31 and the locking post 32 are adapted to each other. The distance between the drive rack 23 and the drive gear 26 is equal to the distance between the locking groove 31 and the drive wheel 27. A drive assembly is provided between the drive wheel 27, the adjusting rod 22, and the frame 1.

[0043] The drive assembly includes a motor, which is fixedly installed inside the frame 1. One end of the motor output shaft is fixedly connected to a coupling (not shown in the figure), and the coupling (not shown in the figure) is fixedly connected to the drive wheel 27. Pressure sensors 33 are fixedly connected inside the locking groove 31 and on the adjusting rod 22 near the drive rack 23.

[0044] It should be noted that the motor used is a model with a self-locking function;

[0045] A PLC controller (not shown in the figure) is fixedly connected inside the frame 1. The pressure sensor 33 is electrically connected to the input terminal of the PLC controller (not shown in the figure), and the output terminal of the PLC controller (not shown in the figure) is electrically connected to the motor control circuit.

[0046] It should be noted that the pressure sensor 33 is a device for measuring the pressure of gas or liquid. Its working principle is based on the deformation of a shaft or diaphragm to measure the pressure. The deformation can generate an electrical signal. The PLC controller uses a programmable memory to store instructions for performing logical operations, sequential control, timing, counting, and arithmetic operations. It controls various types of mechanical equipment or production processes through digital or analog inputs and outputs.

[0047] Furthermore, by contacting the surface structure of the pressure sensor 33, the electrical signal can be changed, and then the motor can be controlled by the PLC controller.

[0048] In practical applications, this PCB board edge wrapping device controls the motor inside the frame 1 via a sliding drive rod 24, an adjusting rod 22, and a pressure sensor 33. When the motor starts, the drive gear 26 causes the drive rack 23 to slide, which in turn causes the adhesive tape holder 21 to slide to both sides. When the adhesive tape holder 21 contacts the adjusting rod 22, the motor stops. During the sliding process, the adhesive tape holder 21 wraps the material on the surface of the PLC board. As the PLC board continues to slide, the adhesive tape holder 21 rotates, and both sides of the PLC board are wrapped. When the PLC board disengages from the drive rod 24, the drive rod 24 will reset. At this time, the pull spring drives the adhesive tape holder 21 to reset, and one side of the PLC board is wrapped. When the PLC board leaves the area of ​​the adhesive tape holder 21, all four sides are wrapped with material. Thus, wrapping of all four sides can be achieved in a single transfer, which is relatively faster.

[0049] In some specific implementations, a threaded rod 41 is rotatably connected inside the frame 1. The threaded rod 41 is threadedly connected to the adjusting rod 22, and the distance between the threaded rod 41 and the adhesive tape holder 21 is greater than zero. The threaded rod 41 can drive the adjusting rod 22 to slide inside the frame 1, thereby adjusting the distance between the adhesive tape holder 21 and the pressure sensor 33. By adjusting the adjusting rod 22, it can be ensured that the moving distance of the adhesive tape holder 21 is greater than half the width of the PLC board, so that the adhesive tape holder 21 will not hinder the movement of the PLC board.

[0050] In a further embodiment, a control rod 42 is slidably connected to the surface of the threaded rod 41, a protruding rod 43 is fixedly connected to the surface of the control rod 42, and a plurality of control shafts 44 are fixedly connected to the surface of the frame 1. The protruding rod 43 contacts the adjacent control shaft 44. The rotation of the threaded rod 41 can be restricted by the sliding of the control rod 42. When the protruding rod 43 contacts the control shaft 44, the control rod 42 cannot rotate.

[0051] In a further embodiment, a sliding groove 45 is formed on the surface of the threaded rod 41, and a sliding column 46 is fixedly connected inside the control rod 42. The sliding groove 45 is adapted to the sliding column 46, and a sliding spring 47 is fixedly connected between the sliding groove 45 and the sliding column 46. The free length of the sliding spring 47 is equal to the distance between the sliding column 46 and the sliding groove 45. Through the sliding spring 47, when no force is applied to the surface of the control rod 42, the protruding rod 43 and the control shaft 44 can be kept in contact, thereby ensuring that the control rod 42 cannot rotate and the threaded rod 41 cannot rotate.

[0052] In some specific implementations, a shearing block 51 is slidably connected inside the frame 1. Two shearing rods 52 are fixedly connected to the shearing block 51 near the drive rod 24. The two shearing rods 52 are symmetrically arranged relative to the drive rod 24, and the end of the shearing rod 52 near the drive rod 24 contacts the drive rod 24. A connecting strap 53 is fixedly connected between the shearing block 51 and the drive rod 24.

[0053] In a further embodiment, the cross-section of each shearing rod 52 is triangular, and the vertices of two shearing rods 52 are in contact. A blade is fixedly provided on the surface of the shearing rod 52. The material on the surface of the adhesive tape holder 21 can be cut by the shearing rod 52. The shearing rod 52 is located at the position of the drive rod 24, so that there is a certain distance between one end of the extended material and the adhesive tape holder 21, thereby ensuring that the materials on both sides are adhered. The length of the material on the PCB board surface is greater than the sum of the lengths of the four sides of the PCB board.

[0054] The working principle of this utility model:

[0055] The PCB board slides and contacts the drive rod 24. Sliding again causes the drive rod 24 to descend, which in turn drives the gear 26 to contact the drive rack 23, the locking groove 31, and the locking post 32. Simultaneously, the drive gear 26 presses against the pressure sensor 33, and the connecting belt 53 pulls the shearing rod 52 upwards. Material on the surface of the shearing rod 52 adheres to the PCB board surface. The motor starts, causing the drive gear 26 to rotate, which in turn drives the rack 23 to slide, causing the adhesive tape holder 21 to slide to both sides of the frame 1, wrapping one side of the PCB board. After the drive rack 23 slides a certain distance, it contacts the pressure sensor 33 on the surface of the adjusting rod 22. The motor stops, the adhesive tape holder 21 stops moving, and the PCB board passes between the adhesive tape holders 21, wrapping both sides. After the PCB board slides a certain distance, it disengages from the drive rod 24. The drive rod 24 resets under the action of the return spring 25. At this time, the adhesive tape holder 21 resets under the action of the pull spring, wrapping one side of the PCB board. Simultaneously, the shearing rod 52 slides down, cutting the material.

[0056] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A PCB board edge encapsulation device, characterized in that, Include: Two rubber paper frame (21) and adjusting rod (22), the rubber paper frame (21) and adjusting rod (22) are both slidingly arranged in the rack (1) inside; The surface of the rubber paper frame (21) is fixedly connected with the drive rack (23); the drive rack (23) and the rack (1) are fixedly connected with the pull spring; The drive rod (24) is slidingly arranged in the rack (1) inside, the drive rod (24) and the rack (1) are fixedly connected with the reset spring (25), the cross section of the drive rod (24) is a right trapezoidal shape, and the height of the side close to the rubber paper frame (21) is higher than that of the other side; the end of the drive rod (24) away from the hypotenuse is rotatably connected with the drive gear (26); The driving wheel (27) is rotatably arranged in the rack (1) inside, the driving wheel (27) is detachably connected with the drive gear (26), the distance between the drive rack (23) and the drive gear (26) is equal to the distance between the driving wheel (27) and the driving wheel (27); the driving assembly is arranged between the driving wheel (27), the adjusting rod (22) and the rack (1).

2. The PCB edge encapsulating device according to claim 1, wherein, The surface of the driving wheel (27) is provided with a clamping groove (31), the surface of the drive rod (24) is fixedly connected with a clamping column (32), and the clamping groove (31) and the clamping column (32) are matched.

3. The PCB edge encapsulating device according to claim 2, wherein, The driving assembly includes a motor fixedly arranged in the rack (1), and one end of the motor output shaft is fixedly connected with the driving wheel (27).

4. The PCB edge encapsulating device according to claim 3, wherein, The inside of the clamping groove (31) and the side of the adjusting rod (22) close to the drive rack (23) are fixedly connected with a pressure sensor (33); the inside of the rack (1) is fixedly connected with a PLC controller, the pressure sensor (33) is electrically connected with the input end of the PLC controller, and the output end of the PLC controller is electrically connected with the motor control loop.

5. The PCB edge encapsulating device of claim 1, wherein, The inside of the rack (1) is rotatably connected with a threaded rod (41), the threaded rod (41) is threadedly connected with the adjusting rod (22), and the distance between the threaded rod (41) and the rubber paper frame (21) is greater than zero.

6. The PCB edge encapsulating device according to claim 5, wherein, The surface of the threaded rod (41) is slidingly connected with a control rod (42), the surface of the control rod (42) is fixedly connected with a protruding rod (43), the surface of the rack (1) is fixedly connected with a plurality of control shafts (44), and the protruding rod (43) is in contact with the adjacent control shaft (44).

7. The PCB edge encapsulating device of claim 6, wherein, The surface of the threaded rod (41) is provided with a sliding groove (45), the inside of the control rod (42) is fixedly connected with a sliding column (46), and the sliding groove (45) and the sliding column (46) are matched.

8. The PCB edge encapsulating device according to claim 7, wherein, The sliding spring (47) is fixedly connected between the sliding groove (45) and the sliding column (46), and the free length of the sliding spring (47) is equal to the distance between the sliding column (46) and the sliding groove (45).

9. The PCB edge encapsulating device of claim 1, wherein, The rack (1) is slidably connected with a shearing block (51), two shearing rods (52) are fixedly connected on the shearing block (51) and close to one side of a driving rod (24), the two shearing rods (52) are symmetrically arranged relative to the driving rod (24), and one end of the shearing rod (52) close to the driving rod (24) is in contact with the driving rod (24); a connecting belt (53) is fixedly connected between the shearing block (51) and the driving rod (24).

10. The PCB edge encapsulating device of claim 9, wherein, The cross sections of the shearing rods (52) are all triangular, and the vertices of the two shearing rods (52) are in contact.

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