Automatic line shearing and laminating mechanism for multilayer circuit board

Abstract

This utility model relates to the field of circuit board manufacturing and discloses an automatic wire cutting and bonding mechanism for multilayer circuit boards. It includes a machine base and unwinding rollers rotatably mounted on the left and front / rear sides of the upper surface of the machine base. A guide roller is fixedly mounted on the left side of the upper surface of the machine base near the unwinding rollers, and a machine box is fixedly mounted on the right side of the upper surface of the machine base. A spraying mechanism is provided on the upper surface of the guide rollers, and a pressing roller is slidably mounted on the upper surface of the machine box. An adjustment mechanism is provided inside the machine box, and a mounting groove is provided on the side wall of the pressing roller. This utility model, through the arrangement of the unwinding rollers on both sides, can simultaneously transport the media belt. Simultaneously, with the cooperation of the spraying mechanism, adhesive can be continuously sprayed onto two circuit boards. Finally, through the setting of the pressing roller and the wire cutting head, the two circuit boards can be pressed and bonded together, achieving the function of point-to-line cutting.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing, specifically to an automatic wire cutting and bonding mechanism for multilayer circuit boards. Background Technology

[0002] A printed circuit board (PCB) is a conductive pattern, consisting of printed lines, printed components, or a combination of both, fabricated on an insulating material according to a predetermined design. PCBs are classified into various types based on their manufacturing materials and applications. Among them, multilayer PCBs consist of multiple layers of traces, with a dielectric layer between each two layers. The dielectric layer can be made very thin, resulting in higher performance for multilayer PCBs. Therefore, multilayer precision PCBs are particularly needed.

[0003] In the production process of multilayer circuit boards, adhesive is manually sprayed onto single-layer cable boards, and then a pressure roller is used to bond the two layers together. Finally, scissors are used to cut the multilayer circuit board into individual segments for separation. However, existing bonding equipment for multilayer circuit board production has a low degree of automation, resulting in insufficient tightness between the multilayer circuit boards. Therefore, there is an urgent need for an automatic wire-cutting and bonding mechanism for multilayer circuit boards to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide an automatic wire cutting and bonding mechanism for multilayer circuit boards to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic wire cutting and bonding mechanism for multilayer circuit boards, comprising a device base and unwinding rollers rotatably mounted on the front and rear sides of the left side of the upper end face of the device base. A guide roller is fixedly mounted on the left side of the upper end face of the device base near the unwinding rollers. A device box is fixedly mounted on the right side of the upper end face of the device base. A spraying mechanism is provided on the upper end face of the guide rollers. A squeezing roller is slidably mounted on the upper end face of the device box. An adjustment mechanism is provided in the inner cavity of the device box. An installation groove is provided on the side wall of the squeezing roller. A shearing seat is fixedly mounted in the inner cavity of the installation groove. A wire cutting head is fixedly mounted on the side wall of the shearing seat.

[0008] Preferably, a power motor is installed in the inner cavity of the unwinding rollers on both the front and rear sides, and an extension rod is fixedly installed on the upper end face of the guide roller. The unwinding roller is connected to the extension rod through a pulley assembly.

[0009] Preferably, the spraying mechanism includes a cam block fixedly installed on the side wall of the extension rod, an energy storage box fixedly installed on the front left side of the upper end face of the equipment base, a piston plate slidably installed in the inner cavity of the energy storage box, a movable rod fixedly installed on the side wall of the piston plate, a pressure plate fixedly installed at the end of the movable rod, and a return spring threadedly installed on the side wall of the movable rod.

[0010] Preferably, the movable rod is connected through the energy storage box, the two ends of the return spring are respectively fixedly installed on the side wall of the piston plate and the inner wall of the energy storage box, the pressure plate is in contact with the side wall of the cam block, and a liquid storage tank is also fixedly installed on the upper end face of the equipment base near the energy storage box. The liquid storage tank is connected to the energy storage box through an inlet pipe. The inner cavity of the inlet pipe is provided with a one-way water valve with an outlet to the inner cavity of the energy storage box. A sprayer is fixedly installed on the side wall of the energy storage box through an outlet pipe. The inner cavity of the outlet pipe is provided with a one-way water valve with an outlet to the inner cavity of the sprayer. The length of the sprayer is much longer than the length of the medium belt.

[0011] Preferably, the adjustment mechanism includes a bidirectional lead screw rotatably mounted inside the equipment box cavity. Limit seats are threadedly installed on the front and rear sides of the side wall of the bidirectional lead screw. The limit seats are rotatably connected to the extrusion roller. A top plate is fixedly mounted on the side wall of the limit seat by a bracket rod. A servo motor is fixedly mounted on the upper end face of the top plate by a frame. The output shaft end of the servo motor is fixedly connected to the extrusion roller.

[0012] Preferably, the front and rear threads of the bidirectional lead screw are in opposite directions, the limiting seat slides in the inner cavity of the equipment box, the front end face of the limiting seat is fixedly mounted with an adjusting motor through the frame, the output shaft end of the adjusting motor is fixedly connected to the bidirectional lead screw, and the support rod is slidably connected to the equipment box.

[0013] Preferably, several sets of mounting grooves are provided on the side wall of the extrusion roller, and a dryer is fixedly installed in the middle of the upper end face of the equipment base.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, through the arrangement of unwinding rollers on both sides, enables simultaneous conveying of the media belt. As the unwinding rollers rotate, the pulley assembly causes the extension rod to drive the cam block to rotate, which in turn causes the movable rod to move the piston plate within the energy storage box. As the volume of the rear cavity of the energy storage box continuously decreases, the adhesive inside the energy storage box is sprayed out from the spray nozzle through the outlet pipe, resulting in a mist of adhesive sprayed onto the side walls and surface of the media belt. Simultaneously, workers embed single-layer circuit boards into the media belt. With the assistance of the dryer, the adhesive quickly condenses, bonding the two circuit boards to the media belt. Finally, the front and rear extrusion rollers work together to cut the media belt. Thus, through the above-described process, this equipment can perform both circuit board bonding and wire cutting, significantly improving worker efficiency. Attached Figure Description

[0016] Figure 1 This is a frontal view of the overall structure of this utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the energy storage box of this utility model.

[0019] Figure 4 This is a cross-sectional view of the equipment box of this utility model.

[0020] In the diagram: 1. Equipment base; 2. Unwinding roller; 3. Guide roller; 31. Extension rod; 32. Pulley assembly; 4. Equipment box; 5. Spraying mechanism; 51. Cam block; 52. Energy storage box; 53. Piston plate; 54. Movable rod; 55. Pressure plate; 56. Return spring; 57. Liquid storage tank; 571. Liquid inlet pipe; 58. Liquid outlet pipe; 59. Sprayer; 6. Extrusion roller; 61. Mounting groove; 62. Shearing seat; 63. Thread trimmer; 7. Adjustment mechanism; 71. Bidirectional lead screw; 72. Limit seat; 73. Support rod; 74. Top plate; 75. Servo motor; 76. Adjustment motor; 8. Dryer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4This utility model provides a technical solution for an automatic wire cutting and bonding mechanism for multilayer circuit boards: an automatic wire cutting and bonding mechanism for multilayer circuit boards includes a device base 1 and unwinding rollers 2 rotatably mounted on the left side of the upper end face of the device base 1. A guide roller 3 is fixedly installed on the left side of the upper end face of the device base 1 near the unwinding roller 2. A device box 4 is fixedly installed on the right side of the upper end face of the device base 1. The mechanism is characterized in that: a spraying mechanism 5 is provided on the upper end face of the guide roller 3; a squeezing roller 6 is slidably installed on the upper end face of the device box 4; an adjusting mechanism 7 is provided in the inner cavity of the device box 4; an installation groove 61 is opened on the side wall of the squeezing roller 6; a shearing seat 62 is fixedly installed in the inner cavity of the installation groove 61; and a wire cutting head 63 is fixedly installed on the side wall of the shearing seat 62.

[0023] Furthermore, a power motor is installed in the inner cavity of the unwinding roller 2 on both the front and rear sides, and an extension rod 31 is fixedly installed on the upper end face of the guide roller 3. The unwinding roller 2 is connected to the extension rod 31 through the pulley assembly 32.

[0024] The spraying mechanism 5 includes a cam block 51 fixedly installed on the side wall of the extension rod 31. An energy storage box 52 is fixedly installed on the front left side of the upper end face of the equipment base 1. A piston plate 53 is slidably installed in the inner cavity of the energy storage box 52. A movable rod 54 is fixedly installed on the side wall of the piston plate 53. A pressure plate 55 is fixedly installed at the end of the movable rod 54. A return spring 56 is threadedly installed on the side wall of the movable rod 54.

[0025] Furthermore, the movable rod 54 is connected through the energy storage box 52, and the two ends of the return spring 56 are respectively fixedly installed on the side wall of the piston plate 53 and the inner wall of the energy storage box 52. The pressure plate 55 is in contact with the side wall of the cam block 51. A liquid storage tank 57 is also fixedly installed on the upper end face of the equipment base 1 near the energy storage box 52. The liquid storage tank 57 is connected to the energy storage box 52 through the liquid inlet pipe 571. The inner cavity of the liquid inlet pipe 571 is provided with a one-way water valve with the outlet to the inner cavity of the energy storage box 52. A sprayer 59 is fixedly installed on the side wall of the energy storage box 52 through the liquid outlet pipe 58. The inner cavity of the liquid outlet pipe 58 is provided with a one-way water valve with the outlet to the inner cavity of the sprayer 59. The length of the sprayer 59 is much longer than the length of the medium belt.

[0026] The adjustment mechanism 7 includes a bidirectional lead screw 71 rotatably installed in the inner cavity of the equipment box 4. Limit seats 72 are threaded on the front and rear sides of the side wall of the bidirectional lead screw 71. The limit seats 72 are rotatably connected to the extrusion roller 6. A top plate 74 is fixedly installed on the side wall of the limit seat 72 by a bracket rod 73. A servo motor 75 is fixedly installed on the upper end face of the top plate 74 by a frame. The output shaft end of the servo motor 75 is fixedly connected to the extrusion roller 6.

[0027] The front and rear threads of the bidirectional lead screw 71 are in opposite directions. The limit seat 72 slides in the inner cavity of the equipment box 4. The front end of the limit seat 72 is fixedly mounted with an adjustment motor 76 through the frame. The output shaft end of the adjustment motor 76 is fixedly connected to the bidirectional lead screw 71. The support rod 73 is slidably connected to the equipment box 4.

[0028] The mounting groove 61 has several sets on the side wall of the extrusion roller 6, and the dryer 8 is fixedly installed in the middle of the upper end face of the equipment base 1.

[0029] Working principle:

[0030] Before starting work, the worker needs to add an appropriate amount of adhesive to the storage tank 57. Then, the worker starts the power motor inside the unwinding roller 2 to make the unwinding roller 2 rotate. At this time, the medium belt wound on the unwinding roller 2 can be transported. The medium belt will pass through the guide roller 3 and the extrusion roller 6.

[0031] When the unwinding roller 2 rotates, the pulley assembly 32 enables the extension rod 31 to drive the cam block 32 to rotate. At this time, the cam block 32 can press the pressure plate 55, causing the movable rod 54 to drive the piston plate 53 to move within the cavity of the energy storage box 52. As the piston plate 53 moves towards the rear of the energy storage box 52, the volume of the rear cavity of the energy storage box 52 continuously decreases, and the pressure of the adhesive inside increases. Finally, the adhesive can be sprayed out from the spray nozzle 59 through the outlet pipe 58, causing the atomized adhesive to be sprayed onto the side of the medium belt. Meanwhile, workers embed single-layer circuit boards into the dielectric strip. With the help of the dryer 8, the adhesive can be quickly condensed, causing the two circuit boards to adhere to the dielectric strip. When the piston plate 53 moves to the front of the inner cavity of the energy storage box 52, the volume of the cavity at the rear of the energy storage box 52 continuously increases, the pressure of the adhesive inside decreases, and finally the adhesive in the storage tank 57 can enter the inner cavity of the energy storage box 52 through the inlet pipe 571 to replenish the adhesive capacity and prepare for the lower spraying of adhesive.

[0032] After the dielectric tape and the two circuit boards pass the extrusion roller 6, the servo motor 76 on the top plate 74 is started to make the extrusion roller 6 seats on the front and rear sides rotate in opposite directions. At this time, the two extrusion rollers 6 can complete the extrusion of the dielectric tape and the two circuit boards, so that they can fit together better. At the same time, as the position of the wire cutter seat 62 on the extrusion roller 6 changes continuously, the wire cutter head 63 can realize the point and line cutting of the dielectric tape, which facilitates the subsequent separation of multilayer circuit boards by workers.

[0033] The worker starts the adjusting motor 76 to rotate the bidirectional lead screw 71. Since the threads on the front and rear sides of the bidirectional lead screw 71 are opposite, when the bidirectional lead screw 71 rotates, the limit seats 72 on the front and rear sides will move closer or further away at the same time. At this time, the positions of the extrusion rollers 6 on the front and rear sides can be changed to enable the production of circuit boards of different thicknesses, thus improving the practicality of the entire equipment.

[0034] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. An automatic wire cutting and bonding mechanism for multilayer circuit boards, comprising a device base (1) and unwinding rollers (2) rotatably mounted on the front and rear sides of the left side of the upper end face of the device base (1), wherein a guide roller (3) is fixedly mounted on the left side of the upper end face of the device base (1) near the unwinding rollers (2), and a device box (4) is fixedly mounted on the right side of the upper end face of the device base (1), characterized in that: A spraying mechanism (5) is provided on the upper end face of the guide roller (3), and a squeezing roller (6) is slidably installed on the upper end face of the equipment box (4). An adjustment mechanism (7) is provided in the inner cavity of the equipment box (4). An installation groove (61) is provided on the side wall of the squeezing roller (6). A shearing seat (62) is fixedly installed in the inner cavity of the installation groove (61), and a wire cutter head (63) is fixedly installed on the side wall of the shearing seat (62).

2. The automatic wire cutting and bonding mechanism for multilayer circuit boards according to claim 1, characterized in that: The unwinding rollers (2) on both the front and rear sides are equipped with power motors. An extension rod (31) is fixedly installed on the upper end face of the guide roller (3). The unwinding rollers (2) are connected to the extension rod (31) through a pulley assembly (32).

3. The automatic wire cutting and bonding mechanism for multilayer circuit boards according to claim 2, characterized in that: The spraying mechanism (5) includes a cam block (51) fixedly installed on the side wall of the extension rod (31). An energy storage box (52) is fixedly installed on the front left side of the upper end face of the equipment base (1). A piston plate (53) is slidably installed in the inner cavity of the energy storage box (52). A movable rod (54) is fixedly installed on the side wall of the piston plate (53). A pressure plate (55) is fixedly installed at the end of the movable rod (54). A return spring (56) is threaded on the side wall of the movable rod (54).

4. The automatic wire cutting and bonding mechanism for multilayer circuit boards according to claim 3, characterized in that: The movable rod (54) is connected through the energy storage box (52). The two ends of the return spring (56) are fixedly installed on the side wall of the piston plate (53) and the inner wall of the energy storage box (52), respectively. The pressure plate (55) is in contact with the side wall of the cam block (51). A liquid storage tank (57) is also fixedly installed on the upper end face of the equipment base (1) near the energy storage box (52). The liquid storage tank (57) is connected to the energy storage box (52) through the liquid inlet pipe (571). The inner cavity of the liquid inlet pipe (571) is provided with a one-way water valve with the outlet to the inner cavity of the energy storage box (52). A sprayer (59) is fixedly installed on the side wall of the energy storage box (52) through the liquid outlet pipe (58). The inner cavity of the liquid outlet pipe (58) is provided with a one-way water valve with the outlet to the inner cavity of the sprayer (59). The length of the sprayer (59) is much longer than the length of the medium belt.

5. The automatic wire cutting and bonding mechanism for multilayer circuit boards according to claim 1, characterized in that: The adjustment mechanism (7) includes a bidirectional lead screw (71) rotatably installed in the inner cavity of the equipment box (4). Limit seats (72) are threaded on the front and rear sides of the side wall of the bidirectional lead screw (71). The limit seats (72) are rotatably connected to the extrusion roller (6). A top plate (74) is fixedly installed on the side wall of the limit seat (72) by a bracket rod (73). A servo motor (75) is fixedly installed on the upper end face of the top plate (74) by a frame. The output shaft end of the servo motor (75) is fixedly connected to the extrusion roller (6).

6. The automatic wire cutting and bonding mechanism for multilayer circuit boards according to claim 5, characterized in that: The front and rear threads of the bidirectional lead screw (71) are opposite. The limiting seat (72) slides in the inner cavity of the equipment box (4). The front end of the limiting seat (72) is fixedly mounted with an adjusting motor (76) through the frame. The output shaft end of the adjusting motor (76) is fixedly connected to the bidirectional lead screw (71). The support rod (73) is slidably connected to the equipment box (4).

7. The automatic wire cutting and bonding mechanism for multilayer circuit boards according to claim 1, characterized in that: The mounting groove (61) is provided with several sets on the side wall of the extrusion roller (6), and the dryer (8) is fixedly installed in the middle of the upper end face of the equipment base (1).

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