A kind of automatic high-efficiency groove opening device and method for opening stepped groove on the outer edge of circuit board

Abstract

The application discloses a kind of automatic high efficiency on the outer edge of circuit board open stepped groove's slotting device and method, the present application relates to the technical field of stepped groove on the outer edge of circuit board is opened, and the mesa of workbench is provided with the take-out and ejecting assembly for continuously taking out circuit board and jacking circuit board;Feed cylinder is fixed on the left stand of gantry, the piston rod of feed cylinder is right through right stand, and the extension end is fixed with the feed plate that is sleeved to the outside of two vertical boards, two milling groove assemblies for opening stepped groove at the outer edge of circuit board are provided on the feed plate, and two milling groove assemblies are respectively opposite to two vertical boards left and right.This application has the beneficial effects that: greatly reduce the work intensity of worker, greatly improve the efficiency of opening stepped groove on the outer edge of circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of opening a stepped groove on the outer edge of a circuit board, and particularly relates to a stepped groove opening device and method for automatically and efficiently opening a stepped groove on the outer edge of a circuit board. BACKGROUND

[0002] After a certain workshop produces a batch of circuit boards 1 as shown in the drawings, Figures 1-2 a process requires a stepped groove to be opened on the outer edge of the circuit board 1, and the stepped groove is composed of a wide strip-shaped groove 2 and a narrow strip-shaped groove 3, and the wide strip-shaped groove 2 is connected to the narrow strip-shaped groove 3, as shown in the structural diagram of the circuit board 1 with a stepped groove, Figures 3-4 wherein the stepped groove is used for welding an electronic component in the shape of a step.

[0003] The method used by the workers in the workshop to open a stepped groove on the outer edge of the circuit board 1 is as follows:

[0004] S1. The worker takes out a circuit board 1 from a basket and places it flat on the surface of the tooling table of the milling machine, and fixes the circuit board 1 on the tooling table through a clamp;

[0005] S2. The worker draws a line on the top surface of the outer edge of the circuit board 1 with chalk, and the line is the position of the stepped groove to be opened, so that the circuit board 1 enters the position for opening the stepped groove;

[0006] S3. The worker operates the milling machine to make the large-diameter milling cutter of the milling machine mill the circuit board 1 along the line, and when the large-diameter milling cutter moves a distance, a wide strip-shaped groove 2 is milled and processed on the outer edge of the circuit board 1, as shown in the drawings; Figures 5-6

[0007] S4. The worker replaces the large-diameter milling cutter of the milling machine with a small-diameter milling cutter, and then makes the small-diameter milling cutter of the milling machine mill the bottom of the wide strip-shaped groove 2, and when the small-diameter milling cutter moves a distance, a narrow strip-shaped groove 3 is milled and processed on the basis of the wide strip-shaped groove 2, thereby finally realizing the opening of a stepped groove on the outer edge of the first circuit board 1;

[0008] S5. The worker opens the clamp on the tooling table, and then takes away the circuit board 1 with the stepped groove from the tooling table;

[0009] S6. The worker repeats the steps S1-S5 multiple times, and a stepped groove is opened on the outer edge of each of the multiple circuit boards 1.

[0010] However, although the method used in the workshop can open a stepped groove on the outer edge of each of the multiple circuit boards 1, there are still the following technical defects in the technology:

[0011] ​I, in steps S1-S2, workers need to take out the circuit board 1 from the basket, and then fix the circuit board 1 on the workbench through the clamp, and then draw a line on the outer edge of the circuit board 1, so that the circuit board 1 enters the work station with a stepped groove; the whole operation is completed manually, and the operation process is more, which not only increases the working strength of workers, but also increases the time of opening the stepped groove on the outer edge of the circuit board 1, thereby reducing the efficiency of opening the stepped groove on the outer edge of the circuit board 1.

[0012] II, the method used in the workshop can only open a stepped groove on the outer edge of one circuit board 1 at a time, and there are 200 circuit boards 1 to be opened in the workshop every day, and this one-by-one method of opening the stepped groove on the circuit board 1 consumes a long time to open the stepped groove on the outer edge of the 200 circuit boards 1 in a day, which undoubtedly further reduces the efficiency of opening the stepped groove on the outer edge of the circuit board 1.

[0013] Therefore, there is an urgent need for a slotting device and method which greatly reduces the working strength of workers and greatly improves the efficiency of opening the stepped groove on the outer edge of the circuit board. SUMMARY

[0014] The purpose of the present application is to overcome the shortcomings of the prior art and provide an automatic and efficient slotting device and method for opening a stepped groove on the outer edge of a circuit board, which greatly reduces the working strength of workers and greatly improves the efficiency of opening the stepped groove on the outer edge of the circuit board.

[0015] The purpose of the present application is achieved by the following technical scheme: an automatic and efficient slotting device for opening a stepped groove on the outer edge of a circuit board, comprising a workbench, a gantry fixed on the workbench table, and a take-out and eject assembly for continuously taking out and lifting the circuit board on the table surface of the workbench;

[0016] The take-out and eject assembly comprises a lifting oil cylinder fixed on the bottom surface of the workbench, the piston rod of the lifting oil cylinder penetrates the workbench upward and the extension end of the piston rod is fixed with a lifting plate, the top surface of the lifting plate is fixed with two accommodating boxes for accommodating the circuit board, the top surface of the two accommodating boxes is welded with a limiting groove steel, and the groove of the limiting groove steel faces left and communicates with the inner cavity of the accommodating box;

[0017] The top surface of the lifting plate is fixed with a material taking oil cylinder, the piston rod of the material taking oil cylinder penetrates the lifting plate downward, and the extension end of the piston rod is fixed with a movable plate sleeved on the outside of the piston rod of the lifting oil cylinder, the movable plate is fixed with two connecting rods, the connecting rods penetrate the bottom wall of the lifting plate and the accommodating box in sequence upward and extend into the accommodating box, and the extension end of the connecting rod is fixed with a material taking plate;

[0018] The gantry is arranged outside the taking-out and ejecting assembly, two vertical plates are fixedly arranged on the bottom surface of the gantry beam and above the two accommodating boxes respectively, and a pressing plate is fixedly arranged at the bottom of each vertical plate;

[0019] A feeding oil cylinder is fixedly arranged on the left stand column of the gantry, the piston rod of the feeding oil cylinder penetrates through the right stand column to the right, a feeding plate is fixedly arranged on the extending end of the piston rod and covers the two vertical plates, two groove milling assemblies are arranged on the feeding plate and used for milling stepped grooves at the outer edges of the circuit boards, and the two groove milling assemblies are arranged on the left and right sides of the two vertical plates respectively.

[0020] A guide rod is fixedly arranged on the bottom surface of each end of the jacking plate, and the two guide rods penetrate through the workbench downward to guide the jacking plate.

[0021] A guide hole is arranged in the movable plate, and the guide hole of the movable plate covers the outer portion of the piston rod of the jacking oil cylinder.

[0022] The accommodating box is rectangular, and the inner cavity of the accommodating box is matched with the outer contour of the circuit board.

[0023] Two through grooves are arranged in the feeding plate, and the two vertical plates penetrate through the two through grooves downward respectively.

[0024] The groove milling assembly on the left side comprises a main motor fixedly arranged on the top surface of the feeding plate, the output shaft of the main motor penetrates through the feeding plate downward, and a rotating disc is fixedly arranged on the extending end of the output shaft, a first motor and a second motor are fixedly arranged on the top surface of the rotating disc and at the left and right ends of the rotating disc respectively, the output shaft of the first motor penetrates through the rotating disc downward, and a large-diameter milling cutter is connected to the extending end of the output shaft, and the output shaft of the second motor penetrates through the rotating disc downward, and a small-diameter milling cutter is connected to the extending end of the output shaft.

[0025] The slotting device further comprises a controller, and the controller is electrically connected with the jacking oil cylinder, the taking-out oil cylinder, the feeding oil cylinder, the main motor, the first motor and the second motor.

[0026] An automatic and efficient method for milling stepped grooves on the outer edges of circuit boards comprises the following steps:

[0027] S1, workers take out the first batch of circuit boards to be milled with stepped grooves, and put the first batch of circuit boards into the cavities of the accommodating boxes on the left side of the taking-out and ejecting assembly from top to bottom, since the inner cavities of the accommodating boxes are matched with the outer contours of the circuit boards, the first batch of circuit boards are positioned, at this time, the bottommost circuit board is supported on the top surface of the taking plate, and the topmost circuit board is flush with the top surface of the accommodating box;

[0028] S2, the worker takes out the second batch of circuit boards to be opened, and throws the second batch of circuit boards from top to bottom into the cavity of the right containing box of the taking-out and ejecting assembly, so that the second batch of circuit boards is positioned, at this time, the top layer of circuit boards in the two containing boxes are respectively below the two pressing plates;

[0029] S3, the piston rod of the taking-out oil cylinder of the taking-out and ejecting assembly is controlled to retract upward, the movable plate is driven to move upward by the piston rod, the two connecting rods are driven to move upward by the movable plate, the taking plate connected with the connecting rods is driven to move upward synchronously, and the circuit board stacked on the taking plate is driven to move upward synchronously; when the piston rod of the taking-out oil cylinder retracts to a set distance, the controller controls the taking-out oil cylinder to be closed, at this time, the top layer of circuit boards in the two containing boxes is just ejected to the outside of the containing box and is just in the groove of the limiting channel steel;

[0030] S4, the piston rod of the jacking oil cylinder of the taking-out and ejecting assembly is controlled to extend upward, the jacking plate is driven to move upward by the piston rod, the taking-out oil cylinder and the two containing boxes are driven to move upward synchronously by the jacking plate, and the movable plate, the taking plate and the circuit board are driven to move upward synchronously;

[0031] When the piston rod of the jacking oil cylinder completely extends, the top layer of circuit boards in the containing box just abuts against the fixed pressing plate, so that the top layer of circuit boards is fixed, at this time, the top layer of circuit boards enters the stepped groove opening station of the groove milling assembly, that is, the outer edge of the top layer of circuit boards is opposite to the large-diameter milling cutter of the groove milling assembly;

[0032] S5, a wide strip-shaped groove is milled on the outer edge of the top layer of circuit boards, and the specific operation steps are as follows:

[0033] S51, the first motor of the groove milling assembly is controlled to start, and the large-diameter milling cutter is driven to rotate around its own axis by the first motor;

[0034] S52, the piston rod of the feeding oil cylinder is controlled to extend to the right, the feeding plate is driven to move to the right by the piston rod, the groove milling assembly is driven to move to the right synchronously by the feeding plate, and the large-diameter milling cutter is driven to move to the right synchronously, so that the outer edge of the top layer of circuit boards is milled by the large-diameter milling cutter; when the large-diameter milling cutter moves a distance, a wide strip-shaped groove is milled on the outer edge of the top layer of circuit boards;

[0035] S6, the piston rod of the feeding oil cylinder is controlled to retract to the left, the feeding plate is driven to move to the left by the piston rod, the groove milling assembly is driven to move to the left synchronously by the feeding plate, and the large-diameter milling cutter is driven to exit from the wide strip-shaped groove of the top layer of circuit boards;

[0036] S7, a narrow strip-shaped groove is milled on the groove bottom of the wide strip-shaped groove of the top layer of circuit boards, and the specific operation steps are as follows:

[0037] S71, control the main motor of the milling groove assembly to start, the main motor drives the rotating disc to rotate, the rotating disc drives the first motor and the second motor on it to start, when the rotating disc rotates 180°, the controller controls the main motor to close, at this time, the small diameter milling cutter of the milling groove assembly faces the wide strip-shaped groove of the top layer circuit board;

[0038] S72, control the second motor of the milling groove assembly to start, the second motor drives the small diameter milling cutter to rotate around its own axis;

[0039] S73, control the piston rod of the feeding oil cylinder to stretch out to the right, the piston rod drives the feeding plate to move to the right, the feeding plate drives the milling groove assembly to move synchronously to the right, and in turn drives the small diameter milling cutter to move synchronously to the right, the small diameter milling cutter mills the bottom of the wide strip-shaped groove, when the small diameter milling cutter walks a distance, a narrow strip-shaped groove is milled and processed on the basis of the wide strip-shaped groove, and in turn the step groove is finally realized on the outer edges of the two top layer circuit boards, wherein the step groove is composed of the wide strip-shaped groove and the narrow strip-shaped groove which are communicated with each other;

[0040] S8, control the piston rod of the feeding oil cylinder to retract to the left, the piston rod drives the feeding plate to move to the left, the feeding plate drives the milling groove assembly to move synchronously to the left, and in turn makes the small diameter milling cutter exit from the narrow strip-shaped groove of the top layer circuit board;

[0041] S9, taking away of the two circuit boards with the step groove: control the piston rod of the lifting oil cylinder of the taking-out and ejecting assembly to retract downward, the piston rod drives the lifting plate to move downward, the lifting plate drives the taking-out oil cylinder and the two containing boxes to move synchronously downward, and in turn drives the circuit boards in the containing boxes to move downward; when the piston rod of the lifting oil cylinder is completely retracted, the workers take away the two circuit boards with the step groove;

[0042] S10, the workers repeat the operation of steps S3-S9 multiple times, so that the step groove is opened on each circuit board in the containing box.

[0043] The application has the following advantages: greatly reducing the work intensity of workers and greatly improving the efficiency of opening the step groove on the outer edge of the circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 It is a structural schematic view of a certain circuit board;

[0045] Figure 2 It is a top view of Figure 1 ;

[0046] Figure 3 It is a structural schematic view of a circuit board with a step groove;

[0047] Figure 4 It is a top view of Figure 3 ;

[0048] Figure 5 A schematic view of milling a wide strip groove on the outer edge of a circuit board;

[0049] Figure 6 A top view of the Figure 5

[0050] Figure 7 A schematic view of the structure of the present application;

[0051] Figure 8 A schematic view of the main section of the Figure 7

[0052] Figure 9 A schematic view of the structure of the component for taking out and ejecting;

[0053] Figure 10 A schematic view of the connection of the containing box and the limiting channel steel;

[0054] Figure 11 A schematic view of the main section of the Figure 10

[0055] Figure 12 A schematic view of the connection of the vertical plate and the pressing plate;

[0056] Figure 13 A schematic view of the main section of the Figure 12

[0057] A schematic view of the connection of the feeding oil cylinder, the feeding plate and the two milling groove components; Figure 14

[0058] Figure 15 A schematic view of the realization of the positioning of the first batch of circuit boards;

[0059] Figure 16 A schematic view of the realization of the positioning of the second batch of circuit boards;

[0060] Figure 17 A schematic view of the top layer of circuit boards in the two containing boxes being just ejected to the outside of the containing boxes;

[0061] Figure 18 A schematic view of the realization of the fixation of the top layer of circuit boards;

[0062] Figure 19 A schematic view of milling a wide strip groove on the outer edge of the top layer of circuit boards;

[0063] Figure 20 A partial enlarged view of A of the Figure 19

[0064] Figure 21 A schematic view of the large diameter milling cutter exiting from the wide strip groove of the top layer of circuit boards;​​​​​

[0065] Figure 22 A schematic diagram showing the small-diameter milling cutter of the milling assembly facing the wide strip groove of the topmost circuit board;

[0066] Figure 23 A schematic diagram showing how a narrow groove is milled from a wide groove using a small-diameter end mill;

[0067] Figure 24 for Figure 23 A magnified view of part B;

[0068] Figure 25 This is a schematic diagram showing a small-diameter end mill exiting a narrow slot in the topmost circuit board.

[0069] Figure 26 A schematic diagram for removing two circuit boards with stepped grooves;

[0070] In the picture:

[0071] 1-Circuit board, 2-Wide strip groove, 3-Narrow strip groove;

[0072] 4-Workbench, 5-Gantry frame, 6-Lifting cylinder, 7-Lifting plate, 8-Receiving box, 9-Limiting channel steel, 10-Material picking cylinder, 11-Moving plate, 12-Connecting rod, 13-Material picking plate, 14-Vertical plate, 15-Pressure plate;

[0073] 16-Feed cylinder, 17-Feed plate, 18-Milling assembly, 19-Guide rod, 20-Guide hole, 21-Through groove;

[0074] 22-Main motor, 23-Turntable, 24-First motor, 25-Second motor, 26-Large diameter end mill, 27-Small diameter end mill. Detailed Implementation

[0075] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0076] like Figures 7-14 As shown, an automated and efficient grooving device for cutting stepped grooves on the outer edge of a circuit board includes a workbench 4 and a gantry frame 5 fixed on the workbench 4. The workbench 4 is provided with a take-out and ejection assembly for continuously taking out the circuit board 1 and lifting the circuit board 1.

[0077] The taking-out and ejecting assembly comprises a jacking oil cylinder 6 fixed on the bottom surface of the workbench 4, the piston rod of the jacking oil cylinder 6 penetrates the workbench 4 upward and the extending end is fixed with a jacking plate 7, the top surface of the jacking plate 7 is fixed with two accommodating boxes 8 for accommodating the circuit board 1, the accommodating boxes 8 are rectangular, the inner cavities of the accommodating boxes 8 are matched with the outer contour of the circuit board 1, the top surface of the two accommodating boxes 8 is welded with a limiting channel steel 9, the groove of the limiting channel steel 9 faces left and is communicated with the inner cavities of the accommodating boxes 8; the bottom surface of the left and right ends of the jacking plate 7 is fixed with a guide rod 19, the two guide rods 19 are both downwardly and slidingly penetrated through the workbench 4 to play a guiding role for the jacking plate 7.

[0078] The top surface of the jacking plate 7 is fixed with a taking-out oil cylinder 10, the piston rod of the taking-out oil cylinder 10 penetrates the jacking plate 7 downward and the extending end is fixed with a movable plate 11 sleeved on the outside of the piston rod of the jacking oil cylinder 6, the movable plate 11 is fixed with two connecting rods 12, the connecting rods 12 sequentially penetrate the bottom wall of the jacking plate 7 and the accommodating boxes 8 upward and extend into the accommodating boxes 8, the extending end of the connecting rod 12 is fixed with a taking-out plate 13; the movable plate 11 is provided with a guide hole 20, the guide hole 20 of the movable plate 11 is sleeved on the outside of the piston rod of the jacking oil cylinder 6.

[0079] The workbench 4 is provided with a gantry 5 erected outside the taking-out and ejecting assembly, the bottom surface of the cross beam of the gantry 5 is fixed with two vertical plates 14 respectively located above the two accommodating boxes 8, the bottom of the two vertical plates 14 is fixed with a pressing plate 15.

[0080] The left stand column of the gantry 5 is fixed with a feeding oil cylinder 16, the piston rod of the feeding oil cylinder 16 penetrates the right stand column rightward and the extending end is fixed with a feeding plate 17 sleeved on the outside of the two vertical plates 14, the feeding plate 17 is provided with two milling slot assemblies 18 for milling stepped grooves at the outer edges of the circuit board 1, the two milling slot assemblies 18 are respectively opposite to the left and right of the two vertical plates 14. The feeding plate 17 is provided with two through grooves 21, the two vertical plates 14 are respectively downwardly penetrated through the two through grooves 21.

[0081] The left milling slot assembly 18 comprises a main motor 22 fixed on the top surface of the feeding plate 17, the output shaft of the main motor 22 penetrates the feeding plate 17 downward and the extending end is fixed with a rotating disc 23, the top surface of the rotating disc 23 and the left and right ends thereof are respectively fixed with a first motor 24 and a second motor 25, the output shaft of the first motor 24 penetrates the rotating disc 23 downward and the extending end is connected with a large-diameter milling cutter 26, the output shaft of the second motor 25 penetrates the rotating disc 23 downward and the extending end is connected with a small-diameter milling cutter 27.

[0082] The slotting device further comprises a controller, the controller is electrically connected with the jacking oil cylinder 6, the material taking oil cylinder 10, the feeding oil cylinder 16, the main motor 22, the first motor 24 and the second motor 25, and workers can control the extension or retraction of the piston rods of the jacking oil cylinder 6, the material taking oil cylinder 10 and the feeding oil cylinder 16 through the controller, and meanwhile, the workers can also control the start or stop of the main motor 22, the first motor 24 and the second motor 25, thereby facilitating the operation of the workers.

[0083] A method for automatically and efficiently opening stepped slots on the outer edge of a circuit board, comprising the following steps:

[0084] S1, workers take out the first batch of circuit boards 1 to be opened stepped slots, and put the first batch of circuit boards 1 from top to bottom into the cavities of the left containing boxes 8 of the taking-out and ejecting assembly, since the inner cavities of the containing boxes 8 match the outer contours of the circuit boards 1, thereby realizing the positioning of the first batch of circuit boards 1, as shown in the figure, at this time, the bottommost circuit board 1 is supported on the top surface of the material taking plate 13, and the topmost circuit board 1 is just flush with the top surface of the containing box 8; Figure 15

[0085] S2, workers take out the second batch of circuit boards 1 to be opened stepped slots, and put the second batch of circuit boards 1 from top to bottom into the cavities of the right containing boxes 8 of the taking-out and ejecting assembly, thereby realizing the positioning of the second batch of circuit boards 1, as shown in the figure, at this time, the topmost circuit boards 1 in the two containing boxes 8 are respectively located directly below the two pressing plates 15; Figure 16

[0086] S3, the piston rod of the material taking oil cylinder 10 of the taking-out and ejecting assembly is controlled to retract upward, the piston rod drives the movable plate 11 to move upward, the movable plate 11 drives the two connecting rods 12 to move upward, the connecting rod 12 drives the material taking plate 13 connected thereto to move upward synchronously, and the material taking plate 13 drives the circuit boards 1 stacked thereon to move upward synchronously; when the piston rod of the material taking oil cylinder 10 retracts to a set distance, the controller controls the material taking oil cylinder 10 to be closed, at this time, the topmost circuit boards 1 in the two containing boxes 8 are just ejected to the outside of the containing boxes 8 and are just located in the grooves of the limiting channel steel 9, as shown in the figure; Figure 17

[0087] S4, the piston rod of the jacking oil cylinder 6 of the taking-out and ejecting assembly is controlled to extend upward, the piston rod drives the jacking plate 7 to move upward, the jacking plate 7 drives the material taking oil cylinder 10 and the two containing boxes 8 to move upward synchronously, and further drives the movable plate 11, the material taking plate 13 and the circuit boards 1 to move upward synchronously;

[0088] When the piston rod of the jacking oil cylinder 6 completely extends, the topmost circuit board 1 in the containing box 8 just abuts against the pressing plate 15 fixed thereon, thereby realizing the fixation of the topmost circuit board 1, as shown in the figure; Figure 18 ​​​As shown, at this time, the topmost circuit board 1 in the containing box 8 enters the stepped slot opening station of the slot milling assembly 18, that is, the outer edge of the topmost circuit board 1 is opposite to the large-diameter milling cutter 26 of the slot milling assembly 18;

[0089] As can be seen from steps S3-S4, the worker only needs to control the linkage of the material taking oil cylinder 10 and the jacking oil cylinder 6, so that the circuit board 1 in the containing box 8 continuously and automatically enters the stepped slot opening station. Compared with the slot opening method in the workshop, the worker does not need to take the circuit board 1 from the basket, does not need to fix the circuit board 1 on the tooling table through the clamp, and does not need to draw a line on the outer edge of the circuit board 1 to make the circuit board 1 enter the stepped slot opening station. Instead, the circuit board 1 in the containing box 8 continuously and automatically enters the stepped slot opening station. This not only greatly reduces the working intensity of the worker, but also saves a large number of processes, so that the stepped slot on the outer edge of the circuit board 1 is opened in a short time, and the efficiency of opening the stepped slot on the outer edge of the circuit board 1 is greatly improved.

[0090] S5, milling a wide strip-shaped slot 2 on the outer edge of the topmost circuit board 1, and the specific operation steps are as follows:

[0091] S51, control the first motor 24 of the slot milling assembly 18 to start, and the first motor 24 drives the large-diameter milling cutter 26 to rotate around its own axis;

[0092] S52, control the piston rod of the feeding oil cylinder 16 to extend to the right, and the piston rod drives the feeding plate 17 to move to the right, the feeding plate 17 drives the slot milling assembly 18 to move synchronously to the right, and in turn drives the large-diameter milling cutter 26 to move synchronously to the right, and the large-diameter milling cutter 26 mills the outer edge of the topmost circuit board 1. When the large-diameter milling cutter 26 moves a distance, a wide strip-shaped slot 2 is milled on the outer edge of the topmost circuit board 1, as shown in Figures 19-20 ;

[0093] S6, control the piston rod of the feeding oil cylinder 16 to retract to the left, and the piston rod drives the feeding plate 17 to move to the left, the feeding plate 17 drives the slot milling assembly 18 to move synchronously to the left, and in turn makes the large-diameter milling cutter 26 exit from the wide strip-shaped slot 2 of the topmost circuit board 1, as shown in Figure 21 ;

[0094] S7, milling a narrow strip-shaped slot 3 on the bottom of the wide strip-shaped slot 2 of the topmost circuit board 1, and the specific operation steps are as follows:

[0095] S71, control the main motor 22 of the milling groove assembly 18 to start, the main motor 22 drives the rotating disc 23 to rotate, the rotating disc 23 drives the first motor 24 and the second motor 25 on it to start, when the rotating disc 23 rotates 180°, the controller controls the main motor 22 to close, at this time, the small diameter milling cutter 27 of the milling groove assembly 18 faces the wide strip-shaped groove 2 of the top layer circuit board 1, as shown in Figure 22 ;

[0096] S72, control the second motor 25 of the milling groove assembly 18 to start, the second motor 25 drives the small diameter milling cutter 27 to rotate around its own axis;

[0097] S73, control the piston rod of the feed oil cylinder 16 to stretch out to the right, the piston rod drives the feed plate 17 to move to the right, the feed plate 17 drives the milling groove assembly 18 to move synchronously to the right, and in turn drives the small diameter milling cutter 27 to move synchronously to the right, the small diameter milling cutter 27 mills the bottom of the wide strip-shaped groove 2, when the small diameter milling cutter 27 walks a distance, a narrow strip-shaped groove 3 is milled and processed on the basis of the wide strip-shaped groove 2, as shown in Figures 23-24 , and in turn realizes that a step groove is opened at the outer edges of the two top layer circuit boards 1, wherein the step groove is composed of the wide strip-shaped groove 2 and the narrow strip-shaped groove 3 which are communicated with each other;

[0098] S8, control the piston rod of the feed oil cylinder 16 to retract to the left, the piston rod drives the feed plate 17 to move to the left, the feed plate 17 drives the milling groove assembly 18 to move synchronously to the left, and in turn makes the small diameter milling cutter 27 exit from the narrow strip-shaped groove 3 of the top layer circuit board 1, as shown in Figure 25 ;

[0099] S9, taking away the two circuit boards 1 with step grooves: control the piston rod of the lifting oil cylinder 6 of the taking-out and ejecting assembly to retract downward, the piston rod drives the lifting plate 7 to move downward, the lifting plate 7 drives the taking-out oil cylinder 10 and the two containing boxes 8 to move synchronously downward, and in turn drives the circuit board 1 in the containing box 8 to move downward; when the piston rod of the lifting oil cylinder 6 is completely retracted, the worker takes away the two circuit boards 1 with step grooves, and the direction of taking away the circuit board 1 with step groove is shown by the arrow in Figure 26 ;

[0100] S10, the worker repeats the operation of steps S3~S9 multiple times, so that each circuit board 1 in the containing box 8 is opened with a step groove.

[0101] Wherein, from steps S3~S9, the slotting device only needs to take out and eject the assembly, the feeding cylinder 16 and the linkage of the two milling slot assemblies 18, so as to open the stepped slots on the outer edges of the two circuit boards 1 at the same time. Compared with the method of opening the stepped slots on the outer edges of the circuit boards 1 one by one in the workshop, the slotting time is saved, and the stepped slots on the outer edges of 200 circuit boards 1 in the workshop are opened in a short time, thereby further greatly improving the efficiency of opening the stepped slots on the outer edges of the circuit boards 1.

Claims

1. A slotting device for automatically and efficiently opening a stepped slot on the outer edge of a circuit board, characterized by: It includes a workbench (4), a gantry (5) fixed on the workbench (4), and a taking and ejecting assembly for continuously taking out and jacking up the circuit board (1) on the surface of the workbench (4); The taking and ejecting assembly comprises a jacking cylinder (6) fixed on the bottom surface of the workbench (4), the piston rod of the jacking cylinder (6) penetrates the workbench (4) upward and the extension end of the piston rod is fixed with a jacking plate (7), the top surface of the jacking plate (7) is fixed with two accommodating boxes (8) for accommodating the circuit board (1), the top surface of the two accommodating boxes (8) is welded with a limiting channel steel (9), the groove of the limiting channel steel (9) faces left and is communicated with the inner cavity of the accommodating box (8). The top surface of the jacking plate (7) is fixed with a taking cylinder (10), the piston rod of the taking cylinder (10) penetrates the jacking plate (7) downward, and the extension end of the piston rod is fixed with a movable plate (11) sleeved on the outside of the piston rod of the jacking cylinder (6), the movable plate (11) is fixed with two connecting rods (12), the connecting rods (12) sequentially penetrate the bottom wall of the jacking plate (7) and the accommodating box (8) upward and extend into the accommodating box (8), and the extension end of the connecting rod (12) is fixed with a taking plate (13). The workbench (4) is provided with a gantry (5) erected outside the taking and ejecting assembly, the bottom surface of the cross beam of the gantry (5) is fixed with two vertical plates (14) located above the two accommodating boxes (8) respectively, and the bottom of each of the two vertical plates (14) is fixed with a pressing plate (15). The left stand column of the gantry (5) is fixed with a feeding cylinder (16), the piston rod of the feeding cylinder (16) penetrates the right stand column rightward, and the extension end of the piston rod is fixed with a feeding plate (17) sleeved on the outside of the two vertical plates (14), the feeding plate (17) is provided with two milling groove assemblies (18) for milling stepped grooves at the outer edges of the circuit board (1), and the two milling groove assemblies (18) are respectively located leftward and rightward of the two vertical plates (14).

2. The automatic high-efficient slotting device for opening stepped slots on the outer edge of a circuit board according to claim 1, characterized in that: The bottom surface of each of the left and right ends of the jacking plate (7) is fixed with a guide rod (19), and the two guide rods (19) are both downwardly and slidingly penetrated through the workbench (4) to guide the jacking plate (7).

3. The automatic high-efficient edge slotting device for opening stepped slots on the outer edge of a circuit board according to claim 2, characterized in that: The movable plate (11) is provided with a guide hole (20) therein, and the guide hole (20) of the movable plate (11) is sleeved on the outside of the piston rod of the jacking cylinder (6).

4. The automatic high-efficient edge slotting device for opening stepped slots on the outer edge of a circuit board according to claim 3, characterized in that: The accommodating box (8) is rectangular, and the inner cavity of the accommodating box (8) is matched with the outer contour of the circuit board (1).

5. The automatic high-efficient edge slotting device for opening stepped slots on the outer edge of a circuit board according to claim 4, characterized in that: The feeding plate (17) is provided with two through grooves (21) therein, and the two vertical plates (14) are both downwardly penetrated through the two through grooves (21).

6. The automatic high-efficient slotting device for opening stepped slots on the outer edge of a circuit board according to claim 5, characterized in that: The left milling assembly (18) comprises a main motor (22) fixed on the top surface of the feeding plate (17), the output shaft of the main motor (22) penetrates downward through the feeding plate (17), and a rotating disc (23) is fixed on the extending end of the output shaft, the top surface of the rotating disc (23) is fixed with a first motor (24) and a second motor (25) at the left and right ends respectively, the output shaft of the first motor (24) penetrates downward through the rotating disc (23), and a large-diameter milling cutter (26) is connected to the extending end of the output shaft, and the output shaft of the second motor (25) penetrates downward through the rotating disc (23), and a small-diameter milling cutter (27) is connected to the extending end of the output shaft.

7. The automatic high-efficient edge slotting device for opening stepped slots on the outer edge of a circuit board according to claim 6, characterized in that: The controller is electrically connected with the lifting oil cylinder (6), the material taking oil cylinder (10), the feeding oil cylinder (16), the main motor (22), the first motor (24) and the second motor (25).

8. A method for automatically and efficiently opening a stepped groove on the outer edge of a circuit board by using the stepped groove opening device of claim 7, characterized in that: It comprises the following steps: S1, the worker takes out the first batch of circuit boards (1) to be opened, and puts the first batch of circuit boards (1) from top to bottom into the cavity of the left containing box (8) of the taking and ejecting assembly, because the inner cavity of the containing box (8) matches the outer contour of the circuit board (1), so that the first batch of circuit boards (1) is positioned, at this time, the bottom layer of the circuit board (1) is supported on the top surface of the taking plate (13), and the top layer of the circuit board (1) is just flush with the top surface of the containing box (8); S2, the worker takes out the second batch of circuit boards (1) to be opened, and puts the second batch of circuit boards (1) from top to bottom into the cavity of the right containing box (8) of the taking and ejecting assembly, so as to realize the positioning of the second batch of circuit boards (1), at this time, the top layer of the circuit board (1) in the two containing boxes (8) is respectively below the two pressing plates (15); S3, the piston rod of the material taking oil cylinder (10) of the taking and ejecting assembly is controlled to retract upward, the movable plate (11) is driven to move upward, the two connecting rods (12) are driven to move upward, the taking plate (13) connected with the connecting rods (12) is driven to move upward synchronously, and the circuit board (1) stacked on the taking plate (13) is driven to move upward synchronously; when the piston rod of the material taking oil cylinder (10) is retracted to a set distance, the controller controls the material taking oil cylinder (10) to close, at this time, the top layer of the circuit board (1) in the two containing boxes (8) is just ejected to the outside of the containing box (8) and just in the groove of the limiting channel steel (9); S4, the piston rod of the lifting oil cylinder (6) of the taking and ejecting assembly is controlled to extend upward, the piston rod drives the lifting plate (7) to move upward, the lifting plate (7) drives the material taking oil cylinder (10) and the two containing boxes (8) to move upward synchronously, and further drives the movable plate (11), the taking plate (13) and the circuit board (1) to move upward synchronously; When the piston rod of the jacking oil cylinder (6) is fully extended, the topmost circuit board (1) in the containing box (8) just abuts against the fixed pressing plate (15), thereby realizing the fixation of the topmost circuit board (1), at this time, the topmost circuit board (1) in the containing box (8) enters the opening stepped groove station of the groove milling assembly (18), that is, the outer edge of the topmost circuit board (1) is opposite to the large-diameter milling cutter (26) of the groove milling assembly (18) left and right; S5, a wide strip-shaped groove (2) is milled on the outer edge of the topmost circuit board (1), and the specific operation steps are as follows: S51, the first motor (24) of the groove milling assembly (18) is controlled to start, and the first motor (24) drives the large-diameter milling cutter (26) to rotate around its own axis; S52, the piston rod of the feeding oil cylinder (16) is controlled to extend to the right, the piston rod drives the feeding plate (17) to move to the right, the feeding plate (17) drives the groove milling assembly (18) to move synchronously to the right, and further drives the large-diameter milling cutter (26) to move synchronously to the right, so that the large-diameter milling cutter (26) mills the outer edge of the topmost circuit board (1); when the large-diameter milling cutter (26) moves a distance, a wide strip-shaped groove (2) is milled on the outer edge of the topmost circuit board (1); S6, the piston rod of the feeding oil cylinder (16) is controlled to retract to the left, the piston rod drives the feeding plate (17) to move to the left, the feeding plate (17) drives the groove milling assembly (18) to move synchronously to the left, and further drives the large-diameter milling cutter (26) to exit from the wide strip-shaped groove (2) of the topmost circuit board (1); S7, a narrow strip-shaped groove (3) is milled on the groove bottom of the wide strip-shaped groove (2) of the topmost circuit board (1), and the specific operation steps are as follows: S71, the main motor (22) of the groove milling assembly (18) is controlled to start, the main motor (22) drives the rotating disc (23) to rotate, the rotating disc (23) drives the first motor (24) and the second motor (25) on it to start, when the rotating disc (23) rotates 180°, the controller controls the main motor (22) to be closed, at this time, the small-diameter milling cutter (27) of the groove milling assembly (18) faces the wide strip-shaped groove (2) of the topmost circuit board (1); S72, the second motor (25) of the groove milling assembly (18) is controlled to start, and the second motor (25) drives the small-diameter milling cutter (27) to rotate around its own axis; S73, the piston rod of the feeding oil cylinder (16) is controlled to extend to the right, the piston rod drives the feeding plate (17) to move to the right, the feeding plate (17) drives the groove milling assembly (18) to move synchronously to the right, and further drives the small-diameter milling cutter (27) to move synchronously to the right, so that the small-diameter milling cutter (27) mills the bottom of the wide strip-shaped groove (2), when the small-diameter milling cutter (27) moves a distance, a narrow strip-shaped groove (3) is milled on the basis of the wide strip-shaped groove (2), and further, a stepped groove is finally opened on the outer edges of the two topmost circuit boards (1), wherein the stepped groove is composed of the wide strip-shaped groove (2) and the narrow strip-shaped groove (3) which are communicated with each other; S8, control the piston rod of the feed cylinder (16) to retract left, the piston rod drives the feed plate (17) to move left, the feed plate (17) drives the milling groove assembly (18) to move left synchronously, and then makes the small diameter milling cutter (27) exit from the narrow strip-shaped groove (3) of the top layer circuit board (1); S9, the taking away of the two circuit boards (1) with stepped grooves: control the piston rod of the lifting cylinder (6) of the taking-out and ejecting assembly to retract downward, the piston lifting plate (7) moves downward, the piston lifting plate (7) drives the taking-out cylinder (10) and the two containing boxes (8) to move downward synchronously, and then drives the circuit board (1) in the containing box (8) to move downward; after the piston rod of the lifting cylinder (6) is completely retracted, the worker takes away the two circuit boards (1) with stepped grooves; S10, the worker repeats the operation of steps S3~S9 multiple times, and then each circuit board (1) in the containing box (8) is opened with a stepped groove.

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