PCB single-sided board automatic cutting machine

Abstract

The application relates to the field of PCB single-sided board processing, in particular to a PCB single-sided board automatic cutting machine. The PCB single-sided board automatic cutting machine comprises a rack, a plurality of first electric shafts are installed on the rack, a plurality of guide wheels are fixedly connected to each first electric shaft, a limiting assembly is connected with the rack, a cutting assembly is installed on the rack, and a plurality of polishing rings are arranged and connected with the cutting assembly. The first electric lock is controlled to be retracted, the telescopic end is separated from the character-shaped through groove, the corresponding mounting disc and the limiting strip are unlocked, the corresponding second electric push rod is controlled to be retracted, the eccentric through groove on the mounting disc is concentric with the second electric shaft, the second electric shaft rotates in the eccentric through groove on the mounting disc without affecting each other, a gap is formed between the hob and the surface of the PCB board, the surface of the PCB board is prevented from being scratched, the use state of the hob is quickly switched, the hob does not need to be disassembled and replaced or manually adjusted, and the adaptability of the equipment is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of PCB single-sided panel processing, and more particularly to an automatic PCB single-sided panel cutting machine. Background Technology

[0002] PCB (Printed Circuit Board) cutting is the first step in the PCB manufacturing process, which involves cutting a large copper-clad substrate into production sizes that meet the requirements of subsequent processing. In existing technologies, several roller cutters on upper and lower cutter shafts are usually used to continuously cut the PCB board while it is being transported. However, in actual production, different batches of PCB boards often require different cutting quantities. The roller cutters of existing cutting machines usually all participate in the cutting. When some roller cutters are not needed, the only way to handle this is to replace the entire cutter shaft assembly or manually disassemble the roller cutters, which is cumbersome. In addition, after cutting, the board material needs to be transferred to a separate edge grinding device for deburring, which increases the process flow time and the risk of scratches on the board surface. Summary of the Invention

[0003] To overcome the shortcomings of existing cutting machines that require replacing the entire cutter shaft assembly or manually disassembling the cutter when certain cutters are not needed, which is cumbersome and requires transferring the board to a separate edge grinding device for deburring after cutting, increasing process flow time and risk of board surface scratches, this invention provides an automatic PCB single-sided board cutting machine.

[0004] The technical solution is as follows: an automatic PCB single-sided board cutting machine, comprising: a frame on which a plurality of first electric shafts are mounted, and a plurality of guide wheels are fixedly connected to each first electric shaft; a limiting component connected to the frame; a cutting component mounted on the frame; and a plurality of grinding rings, all connected to the cutting component.

[0005] As an improvement to the above solution, the limiting assembly includes two symmetrical limiting units connected to the frame. Each limiting unit includes a plurality of first electric push rods fixedly connected to the frame, a mounting frame fixedly connected to the telescopic ends of all the first electric push rods, and a plurality of limiting rollers rotatably connected to the mounting frame.

[0006] As an improvement to the above solution, the cutting assembly includes two vertically symmetrical cutting units connected to the middle of the frame. Each cutting unit includes two lifting mechanisms connected to the frame, two mounting seats respectively connected to the two lifting mechanisms, two horizontally symmetrical electric rollers connected to the mounting seats, a cutting module connected to the middle of the two mounting seats, and an adjustment unit connected to the frame.

[0007] As an improvement to the above solution, the cutting module includes a second electric shaft connected to the middle of the two mounting seats of the cutting unit, a plurality of mounting plates detachably connected to the second electric shaft, and a plurality of hobs detachably connected to the plurality of mounting plates respectively; wherein, a limit strip is detachably connected to the second electric shaft, and a straight through groove is formed on the limit strip; an eccentric through groove with a radius greater than the sum of the radius of the second electric shaft and the height of the limit strip is formed on the mounting plate, and a limit groove matching the limit strip is provided in the eccentric through groove; a plurality of first electric locking devices matching the straight through groove and a plurality of second electric locking devices facing the upper side of the limit strip are installed in the mounting plate; each side of the hob is connected to a grinding ring.

[0008] As an improvement to the above solution, the limiting groove is provided with a number of blind holes that match the telescopic ends of each of the first electric locks.

[0009] As an improvement to the above solution, the adjustment unit includes a translation mechanism connected to the frame, a plurality of second electric push rods connected to the translation mechanism, a plurality of mounting plates fixedly connected to the telescopic ends of the plurality of second electric push rods respectively, a plurality of electric clamps fixedly connected to the lower side of the plurality of mounting plates respectively, and a plurality of limiting modules connected to the plurality of mounting plates respectively, wherein each electric clamp is directly opposite to one of the roller cutters.

[0010] As an improvement to the above solution, the translation mechanism includes an electric slide rail and a plurality of electric sliders slidably connected to the electric slide rail, each of the electric sliders being fixedly connected to a second electric push rod.

[0011] As an improvement to the above solution, the limiting module includes two symmetrical limiting members connected to the mounting plate. Each limiting member includes several elastic telescopic rods fixed to the lower side of the mounting plate and a limiting plate fixed to the telescopic ends of all the elastic telescopic rods. The thickness of the limiting plate is consistent with the width of the cutting seam of the roller cutter.

[0012] As an improvement to the above solution, the limiting component further includes several fixed rods fixedly connected to the end of the limiting plate away from the mounting plate, and several guide cylinders rotatably connected to the several fixed rods respectively.

[0013] As an improvement to the above solution, the limiting member further includes a dust extraction pipe fixedly connected to the limiting plate. The dust extraction pipe passes through and is fixedly connected to the mounting plate, and the portion of the dust extraction pipe located between the limiting plate and the mounting plate is provided with a telescopic part.

[0014] Beneficial effects: 1. When a certain roller cutter does not need to participate in cutting, the first electric locking device is controlled to retract so that its telescopic end disengages from the through slot, thereby unlocking the corresponding mounting plate and the limit strip. Then, the corresponding second electric push rod is controlled to retract, so that the eccentric through slot on the mounting plate is concentric with the second electric shaft. At this time, the second electric shaft rotates within the eccentric through slot of the mounting plate without affecting each other, and a gap is created between the roller cutter and the PCB board surface to avoid scratching the board surface. This enables rapid switching of the roller cutter's usage state without the need for disassembly or manual adjustment, greatly improving the equipment's adaptability to different production batches.

[0015] 2. By setting grinding rings on both sides of the roller cutter, after the cutting is completed, the grinding rings are aligned with the edge of the cut part of the sheet metal. Then, the second electric push rod drives the limiting plate to be inserted between the cutting seams to guide and limit the sheet metal. Subsequently, the electric roller and the first electric shaft reverse to transport the sheet metal in the opposite direction, so that the edge burrs of the sheet metal are ground off when passing through the grinding ring. The whole process is completed at the cutting station. There is no need to transfer the sheet metal to an independent edge grinding equipment for secondary loading and unloading, saving process flow time and avoiding damage to the sheet surface caused by secondary handling. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the cutting component structure of the present invention; Figure 3 This is a partial structural diagram of the cutting component of the present invention; Figure 4 This is a schematic diagram of the combined structure of the second electric shaft, mounting plate, and hob of the present invention; Figure 5 This is a schematic diagram of the combined structure of the mounting plate, the first electric lock, and the second electric lock of the present invention. Figure 6 This is a schematic diagram of the combined structure of the hob and the grinding ring of the present invention; Figure 7 This is an enlarged view of area A of the present invention; Figure 8 This is a schematic diagram of the combined structure of the second electric push rod, mounting plate, and electric clamp of the present invention; Figure 9 This is an enlarged view of region B of the present invention; Figure 10 This is an exploded view of the combination of the limiting plate and the dust extraction pipe of the present invention.

[0017] Labels in the diagram: 1-Frame, 101-First electric shaft, 102-Guide wheel, 2-First electric push rod, 3-Mounting bracket, 4-Limiting roller, 5-Lifting mechanism, 6-Mounting seat, 7-Electric roller, 8-Electric slide rail, 9-Electric slider, 10-Second electric shaft, 1001-Limiting strip, 1002-I-shaped through groove, 11-Mounting plate, 1101-First electric locker, 1102-Second electric locker, 1103-Blind hole, 12-Holl cutter, 1201-Grinding ring, 13-Second electric push rod, 14-Mounting plate, 15-Electric clamp, 16-Elastic telescopic rod, 17-Limiting plate, 18-Fixing rod, 19-Guide cylinder, 20-Dust extraction pipe. Detailed Implementation

[0018] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0019] Example according to Figures 1-10 As shown, this embodiment provides an automatic PCB single-sided board cutting machine, including a frame 1, a limiting component, a cutting component, and grinding rings 1201. The frame 1 has several first electric shafts 101 mounted on it, each first electric shaft 101 having several guide wheels 102 fixedly connected to it. The limiting component is connected to the frame 1. The cutting component is mounted on the frame 1. Several grinding rings 1201 are provided, all connected to the cutting component. During operation, the limiting component guides and limits the PCB board, the cutting component cuts the PCB board, and after cutting, the cutting component and grinding rings 1201 work together to grind and remove burrs from the board.

[0020] The limiting assembly includes two symmetrical limiting units connected to the frame 1. Each limiting unit includes a plurality of first electric push rods 2 fixedly connected to the frame 1, a mounting frame 3 fixedly connected to the telescopic ends of all the first electric push rods 2, and a plurality of limiting rollers 4 rotatably connected to the mounting frame 3.

[0021] The cutting assembly includes two symmetrical cutting units connected to the middle of the frame 1. Each cutting unit includes two lifting mechanisms 5 connected to the frame 1, two mounting seats 6 respectively connected to the two lifting mechanisms 5, two symmetrical electric rollers 7 connected to the mounting seats 6, a cutting module connected to the middle of the two mounting seats 6, and an adjustment unit connected to the frame 1. In this embodiment, the lifting mechanism 5 is a hydraulic lifting mechanism 5, which includes a hydraulic cylinder. The hydraulic cylinder is fixed to the frame 1, and its telescopic end is fixed to the mounting seat 6. The lifting of the mounting seat 6 is controlled by the hydraulic cylinder. In other embodiments, the lifting mechanism 5 can also be a worm gear lifting mechanism 5, a screw nut lifting mechanism 5, etc., as long as it can drive the mounting seat 6 to lift.

[0022] The cutting module includes a second electric shaft 10 connected to the middle of the two mounting seats 6 of the cutting unit, a plurality of mounting discs 11 detachably connected to the second electric shaft 10, and a plurality of roller cutters 12 detachably connected to the plurality of mounting discs 11 respectively. Among them, the second electric shaft 10 is detachably connected to a limiting strip 1001, and the limiting strip 1001 has a through groove 1002. The mounting plate 11 has an eccentric through groove with a radius greater than the sum of the radius of the second electric shaft 10 and the height of the limiting strip 1001. A limiting groove matching the limiting strip 1001 is provided within the eccentric through groove. The mounting plate 11 contains several first electric locking devices 1101 matching the straight through groove 1002 and several second electric locking devices 1102 directly opposite the upper side of the limiting strip 1001. The mounting plate 11 has a built-in battery that powers the first electric locking devices 1101 and the second electric locking devices 1102. The first electric locking device 1101, through its telescopic part inserted into the straight through groove 1002, locks the mounting plate 11 and the limiting strip 1001 vertically. The second electric locking device 1102, through its telescopic end abutting against the upper side of the limiting strip 1001, locks the mounting plate 11 and the limiting strip 1001 horizontally. The hob 12 is connected to a grinding ring 1201 on each side.

[0023] The limiting groove is provided with a plurality of blind holes 1103 that match the telescopic end of each of the first electric locks 1101. The blind holes 1103 limit and support the telescopic end of the first electric locks 1101, so as to avoid unilateral deformation of the telescopic part of the first electric locks 1101.

[0024] The adjustment unit includes a translation mechanism connected to the frame 1, a plurality of second electric push rods 13 connected to the translation mechanism, a plurality of mounting plates 14 respectively fixed to the telescopic ends of the plurality of second electric push rods 13, a plurality of electric clamps 15 respectively fixed to the lower side of the plurality of mounting plates 14, and a plurality of limiting modules respectively connected to the plurality of mounting plates 14. Each electric clamp 15 is directly opposite one of the roller cutters 12.

[0025] The translation mechanism includes an electric slide rail 8 and a plurality of electric sliders 9 slidably connected to the electric slide rail 8, each of the electric sliders 9 being fixedly connected to a second electric push rod 13.

[0026] The limiting module includes two symmetrical limiting members connected to the mounting plate 14. Each limiting member includes a plurality of elastic telescopic rods 16 fixedly connected to the lower side of the mounting plate 14 and a limiting plate 17 fixedly connected to the telescopic ends of all the elastic telescopic rods 16. The thickness of the limiting plate 17 is consistent with the cutting seam width of the roller cutter 12.

[0027] The limiting component also includes a plurality of fixed rods 18 fixedly connected to the end of the limiting plate 17 away from the mounting plate 14, and a plurality of guide cylinders 19 rotatably connected to the plurality of fixed rods 18 respectively. By setting the elastic telescopic rod 16, the excessive extension of the second electric push rod 13 is prevented from causing the guide cylinder 19 to rigidly squeeze the plate and damage the plate.

[0028] The limiting component also includes a dust extraction pipe 20 fixedly connected to the limiting plate 17. The dust extraction pipe 20 passes through and is fixedly connected to the mounting plate 14, and the portion of the dust extraction pipe 20 located between the limiting plate 17 and the mounting plate 14 is provided with a telescopic part.

[0029] Before operation, all dust extraction pipes 20 are connected to external dust collection equipment. The limiting components are adjusted according to the PCB board specifications. The distance between the two mounting brackets 3 is adjusted by controlling the extension and retraction of the first electric push rod 2 to adapt the limiting components to the PCB board specifications. The mounting base 6 is adjusted by the lifting mechanism 5 to adapt the interval between the two symmetrically positioned electric rollers 7 and the interval between the two symmetrically positioned roller cutters 12 to the PCB board specifications. Then, the interval between the roller cutters 12 and their usage status are adjusted and switched according to processing needs. During the interval between 12, the second electric push rod 13 extends to push the mounting plate 14, causing the electric clamp 15 to move, so that the hob 12 is located between the two clamping plates of the electric clamp 15. Then, the electric clamp 15 closes to clamp the hob 12. At the same time, the second electric locking device 1102 in the mounting plate 11 retracts to release the lock between the mounting plate 11 and the limit bar 1001. The diameter of the telescopic part of the first electric locking device 1101 is the same as the height of the through slot 1002. At this time, the mounting plate 11 can move left and right on the second electric shaft 10 and the limit bar 1001. The translation mechanism drives the second electric push rod 13, mounting plate 14, and electric clamp 15 to move, which in turn drives the hob 12 and mounting plate 11 to move via the electric clamp 15. This allows for adjustment of the spacing between several hobs 12 to meet processing requirements. For hobs 12 that are not in use, the first electric locking device 1101 in the mounting plate 11 corresponding to that hob 12 is controlled to retract, causing its telescopic end to disengage from the through slot 1002. At this time, the mounting plate 11 can disengage from the limit strip 1001. Then, the second electric locking device corresponding to that mounting plate 11 is controlled to retract. The push rod 13 retracts a preset distance, causing the mounting plate 11 to disengage from the limiting bar 1001, and making the eccentric through groove on the mounting plate 11 concentric with the second electric shaft 10. During operation, the mounting plate 11 is kept in this state. When the second electric shaft 10 drives the limiting bar 1001 to rotate, it rotates within the eccentric through groove of the mounting plate 11 without affecting each other. This also creates a gap between the hob 12 on the mounting plate 11 and the PCB board surface, preventing it from scratching the PCB board surface when it passes through. Thus, the switching of the hob 12's usage state can be achieved without disassembly or manual adjustment.

[0030] During operation, the first electric shaft 101 drives the guide wheel 102 to rotate, conveying the PCB board to the right. The PCB board is guided and limited by the limiting rollers 4 on the two mounting brackets 3. Simultaneously, all electric rollers 7 are activated, conveying the PCB board synchronously as it is transported. Before the PCB board reaches the space between the two roller cutters 12, the two second electric shafts 10 are activated, driving all the roller cutters 12 on them to rotate. The PCB board is then cut as it passes through the rollers, resulting in several pieces. After the PCB board has completely passed through the roller cutter 12, all electric rollers 7 and the first electric shaft 101 stop operating. At this time, the mounting base 6 driven by the lifting mechanism 5 descends a preset distance, causing the second electric shaft 10 to drive the mounting plate 11 and the roller cutter 12 to descend, thereby bringing the grinding ring 1201 on the upper roller cutter 12 to the same height as the upper edge of the board cutting area. At the same time, the second electric push rod 13 is controlled to extend a preset length, so that the end of the right limiting plate 17 is inserted between the cutting seams, and the guide cylinder 19 is in contact with the board surface. The system guides and limits the material, then controls the electric roller 7 and the first electric shaft 101 to reverse, conveying all the sheet metal to the left. The limiting plate 17 and the limiting assembly guide and limit the sheet metal, maintaining the width of the cutting seam between the sheet metals at the point of completion. Then, as the sheet metal passes through the two grinding rings 1201 on the upper roller 12, the two grinding rings 1201 on the upper roller 12 grind and remove burrs from the upper edge of the sheet metal at the cutting point. Simultaneously, the dust extraction device connected to the dust extraction pipe 20 is activated, causing the dust extraction pipe 20 to... The opening generates suction to collect dust and debris from the grinding process. After grinding the upper edge to remove burrs, the reverse process is repeated for the lower edge of the board. All grinding work is completed at the PCB board cutting station, eliminating the need for a second loading and unloading process after cutting, saving time and improving efficiency. After grinding, the board is conveyed to the right and can be picked up manually or by external material handling equipment. Then, the above operation is repeated for the next PCB board.

[0031] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An automatic PCB single-sided board cutting machine, characterized in that, include: A frame (1) is mounted with a plurality of first electric shafts (101), and a plurality of guide wheels (102) are fixedly connected to each of the first electric shafts (101). A limiting component is connected to the frame (1); The cutting assembly is mounted on the frame (1); and Several grinding rings (1201) are provided, all of which are connected to the cutting component.

2. The automatic PCB single-sided board cutting machine according to claim 1, characterized in that, The limiting assembly includes two symmetrical limiting units connected to the frame (1). Each limiting unit includes a plurality of first electric push rods (2) fixedly connected to the frame (1), a mounting frame (3) fixedly connected to the telescopic ends of all the first electric push rods (2), and a plurality of limiting rollers (4) rotatably connected to the mounting frame (3).

3. The automatic PCB single-sided board cutting machine according to claim 1, characterized in that, The cutting assembly includes two symmetrical cutting units connected to the middle of the frame (1). Each cutting unit includes two lifting mechanisms (5) connected to the frame (1), two mounting seats (6) respectively connected to the two lifting mechanisms (5), two symmetrical electric rollers (7) connected to the mounting seats (6), a cutting module connected to the middle of the two mounting seats (6), and an adjustment unit connected to the frame (1).

4. The automatic PCB single-sided board cutting machine according to claim 3, characterized in that, The cutting module includes a second electric shaft (10) connected to the middle of the two mounting seats (6) of the cutting unit, a plurality of mounting discs (11) detachably connected to the second electric shaft (10), and a plurality of roller cutters (12) detachably connected to the plurality of mounting discs (11). The second electric shaft (10) is detachably connected to a limiting strip (1001), and the limiting strip (1001) has a through groove (1002). The mounting plate (11) has an eccentric through groove with a radius greater than the sum of the radius of the second electric shaft (10) and the height of the limiting strip (1001). The eccentric through groove is provided with a limiting groove that matches the limiting strip (1001). The mounting plate (11) is equipped with a plurality of first electric locking devices (1101) that match the straight through groove (1002) and a plurality of second electric locking devices (1102) that are directly opposite the upper side of the limiting strip (1001). The hob (12) is connected to a grinding ring (1201) on each side.

5. The automatic PCB single-sided board cutting machine according to claim 4, characterized in that, The limiting groove is provided with a plurality of blind holes (1103) that match the telescopic end of each of the first electric locking devices (1101).

6. The automatic PCB single-sided board cutting machine according to claim 4, characterized in that, The adjustment unit includes a translation mechanism connected to the frame (1), a plurality of second electric push rods (13) connected to the translation mechanism, a plurality of mounting plates (14) respectively fixed to the telescopic ends of the plurality of second electric push rods (13), a plurality of electric clamps (15) respectively fixed to the lower side of the plurality of mounting plates (14), and a plurality of limiting modules respectively connected to the plurality of mounting plates (14). Each electric clamp (15) is directly opposite to one of the roller cutters (12).

7. The automatic PCB single-sided board cutting machine according to claim 6, characterized in that, The translation mechanism includes an electric slide rail (8) and a plurality of electric sliders (9) slidably connected to the electric slide rail (8), each of the electric sliders (9) being fixedly connected to a second electric push rod (13).

8. An automatic PCB single-sided board cutting machine according to any one of claims 6-7, characterized in that, The limiting module includes two left and right symmetrical limiting members connected to the mounting plate (14). The limiting members include a plurality of elastic telescopic rods (16) fixed to the lower side of the mounting plate (14) and a limiting plate (17) fixed to the telescopic ends of all the elastic telescopic rods (16). The thickness of the limiting plate (17) is consistent with the cutting seam width of the roller cutter (12).

9. The automatic PCB single-sided board cutting machine according to claim 8, characterized in that, The limiting component also includes a number of fixing rods (18) fixed to the end of the limiting plate (17) away from the mounting plate (14) and a number of guide cylinders (19) rotatably connected to the number of fixing rods (18).

10. An automatic PCB single-sided board cutting machine according to claim 8, characterized in that, The limiting component also includes a dust extraction pipe (20) fixedly connected to the limiting plate (17). The dust extraction pipe (20) passes through and is fixedly connected to the mounting plate (14). The portion of the dust extraction pipe (20) located between the limiting plate (17) and the mounting plate (14) is provided with a telescopic part.

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