A precise punching and positioning device for PCB printed circuit boards

Abstract

The present invention discloses a device for accurately punching and positioning a PCB printed circuit board, comprising a workbench, a mounting member, and a positioning mechanism. The positioning mechanism is provided with a connecting tube, a fixing plate, a drill bit, and a plurality of positioning components mounted on the lower end of the fixing plate. The positioning component comprises a rotating member, a positioning member, a driving member, and a sleeve. The device for accurately punching and positioning a PCB printed circuit board can accurately position circuit boards of different sizes, dimensions, and shapes, thereby fixing the circuit boards and making it easier for the drill bit to punch holes in them. By energizing the driving member, the rotating member is rotated, and then the positioning member is pushed down by the rotating member to fix the circuit board. Not only can positioning be achieved quickly, but also positioning of circuit boards of different sizes, dimensions, and shapes can be achieved, and multifunctional positioning and fixing can be achieved without replacing the positioning member.

Description

Technical Field

[0001] The present invention relates to circuit board processing technology, and in particular to a precise punching and positioning device for a PCB printed circuit board. Background Art

[0002] Printed circuit board punches (also known as perforators or punching machines) are essential processing equipment in the circuit board manufacturing process. Their efficiency and processing accuracy directly affect the entire circuit board manufacturing process. When processing the circuit board, it must first be fixed, and then the drill bit is lowered to punch the holes.

[0003] However, in reality, circuit boards come in a variety of shapes, sizes, and dimensions, so different circuit boards need to be fixed with different positioning pieces. This method is not only time-consuming but also difficult to operate. The need to replace specific positioning pieces each time reduces work efficiency.

[0004] CN209190930U discloses a positioning device for drilling holes in a circuit board. Although the positioning device can realize the positioning of the circuit board, it is difficult to realize the positioning of circuit boards with special shapes and has poor adaptability. Summary of the Invention

[0005] In order to solve the defects of the above-mentioned prior art, the present invention proposes a PCB printed circuit board precise punching and positioning device.

[0006] The technical solution of the present invention is achieved as follows:

[0007] A PCB printed circuit board precision punching and positioning device, characterized by comprising:

[0008] a workbench for placing circuit boards;

[0009] A mounting frame provided at the workbench, on which a telescopic cylinder, a mounting seat, a guide rail, and a motor are provided, wherein the telescopic cylinder is provided on the mounting frame, the mounting seat is provided at the lower end of the telescopic cylinder, the guide rail is provided on the mounting seat, and the motor is provided on the guide rail; and

[0010] The positioning mechanism is arranged at the lower end of the motor, and the positioning mechanism is provided with a connecting tube, a fixing plate, a drill bit and multiple positioning components installed at the lower end of the fixing plate.

[0011] The positioning component includes:

[0012] a rotating member, wherein a lower surface of the rotating member forms a first mating surface and a first contact surface;

[0013] A positioning member, the upper surface of which forms a second mating surface that cooperates with the first mating surface and a second contact surface that cooperates with the first contact surface,

[0014] a driving member, the driving member being used to drive the rotating member to rotate, so that the first mating surface on the rotating member is separated from the second mating surface on the positioning member, the first contact surface is in contact with the second contact surface, and the positioning member is kept moving downward; and

[0015] The sleeve has a receiving hole in the middle, and the rotating member and the positioning member are installed in the receiving hole.

[0016] In the present invention, the driving member is composed of symmetrically arranged permanent magnets and an electromagnet installed in the middle of the symmetrical permanent magnets. The electromagnet is connected to the upper end of the rotating member, and the rotating member rotates through the interaction of the attractive force or repulsive force between the permanent magnets and the electromagnet.

[0017] In the present invention, the positioning member has symmetrically arranged mounting grooves, and a retaining block is provided in the mounting groove to keep the positioning member from moving only up and down. The retaining block prevents the positioning member from rotating, and the retaining block is connected to the positioning member through a limit pin.

[0018] In the present invention, the sleeve has a limiting groove that cooperates with the retaining block, a limiting column is provided in the middle of the limiting groove, the retaining block is provided with a limiting hole that cooperates with the limiting column, and an elastic part is sleeved on the limiting column. The upper end of the elastic part contacts the lower surface of the retaining block, and the lower end contacts the lower surface of the limiting groove.

[0019] In the present invention, the height of the limiting groove is H1, the height of the retaining block is H2, and H1>2*H2.

[0020] In the present invention, the positioning components are evenly arranged in a plurality of ring shapes on the lower surface of the fixed plate.

[0021] In the present invention, the rotation angle of the rotating member is 0-180° or 180-360°.

[0022] In the present invention, the sleeve further has a first step chamber and a second step chamber in the middle, the first step chamber is connected to the accommodating hole through the second step chamber, the diameter of the first step chamber is larger than the diameter of the second step chamber, and the diameter of the second step chamber is larger than the diameter of the accommodating hole.

[0023] In the present invention, the rotating member is provided with a retaining portion that cooperates with the second stepped chamber, and the permanent magnet and the electromagnet are arranged in the first stepped chamber.

[0024] In the present invention, the first mating surface and the second mating surface are inclined surfaces, and the first contact surface and the second contact surface are horizontal surfaces.

[0025] The PCB (Printed Circuit Board) precision hole-punching and positioning device of the present invention has the following beneficial effects: It can accurately position and secure circuit boards of varying sizes, dimensions, and shapes, facilitating drilling with a drill. By energizing a driver, a rotating member rotates, which then pushes a positioning member downward to secure the circuit board. This device not only enables rapid positioning, but also allows for positioning of circuit boards of varying sizes, dimensions, and shapes without requiring replacement of positioning members, achieving multifunctional positioning and fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the PCB printed circuit board precision punching and positioning device of the present invention;

[0027] Figure 2 for Figure 1 Stereoscopic image of

[0028] Figure 3 for Figure 2 Schematic diagram of the positioning mechanism structure;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure in another direction;

[0030] Figure 5 for Figure 4 Schematic diagram of the positioning component structure;

[0031] Figure 6 for Figure 5 A top view of

[0032] Figure 7 for Figure 6 The cross-sectional view at AA in the figure;

[0033] Figure 8 for Figure 5 Exploded diagram;

[0034] Figure 9 for Figure 8 Schematic diagram of the sleeve structure in FIG;

[0035] Figure 10 for Figure 9 sectional view of ;

[0036] Figure 11 for Figure 8 Schematic diagram of the structure of the electromagnet, permanent magnet and rotating part;

[0037] Figure 12 for Figure 11 A schematic diagram of the structure in another direction;

[0038] Figure 13for Figure 8 Schematic diagram of the structure of the positioning member, retaining block, limiting column, limiting pin and elastic member;

[0039] Figure 14 for Figure 13 Schematic diagram of the positioning member structure;

[0040] Figure 15 Schematic diagram of the working state of the rotating member and the positioning member in the present invention;

[0041] Figure 16 for Figure 15 A schematic diagram of the structure in another direction;

[0042] Figure 17 Schematic diagram of the contact state between the rotating member and the positioning member in the present invention.

[0043] In the figure: workbench 1, mounting frame 2, positioning mechanism 3, drill bit 4, positioning assembly 5, telescopic cylinder 6, mounting seat 7, guide rail 8, motor 9, guide column 10, connecting tube 11, fixed plate 12, fixed seat 13, positioning member 14, through hole 15, rotating member 16, driving member 17, sleeve 18, first mating surface 19, first contact surface 20, second mating surface 21, second contact surface 22, accommodating hole 23, first step chamber 24, second step chamber 25, holding portion 26, permanent magnet 27, electromagnet 28, first supporting surface 29, second supporting surface 30, mounting groove 31, holding block 32, limiting pin 33, pin hole 34, matching hole 35, limiting groove 36, limiting column 37, limiting hole 38, elastic member 39, first mounting hole 40, second positioning hole 41, first positioning hole 42, second mounting hole 43. Implementation Method

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0045] like Figures 1 to 17 As shown, the device for precisely drilling and positioning printed circuit boards (PCBs) of the present invention comprises a workbench 1, a mounting frame 2, and a positioning mechanism 3. The bottom surface of the workbench 1 is coplanar with the bottom surface of the mounting frame 2, and the workbench 1 and mounting frame 2 are connected. The positioning mechanism 3 is mounted on the mounting frame 2. The positioning mechanism 3 allows for precise positioning of circuit boards of various shapes, enabling a drill bit 4 to perform drilling.

[0046] When punching is required for a special-shaped circuit board, it is necessary to fix it and then punch. When the positioning components 5 at different positions are powered on, the predetermined positioning components 5 can be powered on and started, thereby keeping the positioning members 14 in the positioning components 5 descending, and the circuit board is pressed and positioned.

[0047] The workbench 1 is used to place the circuit board, which is placed at the upper end. The mounting frame 2 is set at the workbench 1, and the mounting frame 2 is provided with a telescopic cylinder 6, a mounting seat 7, a guide rail 8 and a motor 9. The telescopic cylinder 6 is set on the mounting frame 2, the mounting seat 7 is set at the lower end of the telescopic cylinder 6, the guide rail 8 is set on the mounting seat 7, and the motor 9 is set on the guide rail 8. A guide column 10 is also provided on the mounting frame 2, and the guide column 10 is used to maintain the position of the mounting seat 7. The motor 9 is located on the guide rail 8, which can enable the motor 9 to move on the guide rail 8, so that the motor 9 can move in the lateral direction, and the telescopic cylinder 6 can keep the mounting seat 7 moving in the up and down directions.

[0048] Positioning mechanism 3 is located at the lower end of motor 9 and comprises a connecting tube 11, a fixed disk 12, a drill bit 4, and multiple positioning assemblies 5 mounted at the lower end of fixed disk 12. Motor 9 is mounted on guide rail 8 via a fixing base 13. Connecting tube 11 is connected to fixed disk 12, while drill bit 4 is located in the middle of connecting tube 11 and can rotate therein without interfering with fixed disk 12.

[0049] The telescopic cylinder 6 drives the positioning mechanism 3 to move up and down, and the motor 9 can drive the drill bit 4 to rotate, but will not drive the fixed plate 12 to rotate.

[0050] The positioning components 5 are evenly arranged in multiple annular rings on the lower surface of the fixed plate 12. Multiple rings can be arranged, with the number of positioning components 5 increasing gradually from the inside outward to accommodate positioning and punching holes for circuit boards of varying sizes and shapes, enabling the positioning mechanism 3 to accommodate diverse circuit board structures. This allows positioning of various shaped circuit boards. When power is applied to the positioning components 5 at different locations, the positioning members 14 in the multiple positioning components 5 that match the shape of the shaped circuit board can be kept moving downward, thereby maintaining the positioning members 14's pressure on the circuit board.

[0051] The edge of the lower surface of the positioning member 14 also has an arc-shaped chamfer, so that the edge of its lower end is smooth to avoid damaging the circuit board.

[0052] A through hole 15 for the drill bit 4 to pass through is provided in the middle of the fixed disk 12 . The drill bit 4 extends through the through hole 15 to the lower end of the fixed disk 12 and is located in the middle of the first circle positioning assembly 5 .

[0053] The positioning assembly 5 includes a rotating member 16, a positioning member 14, a driving member 17, and a sleeve 18. The rotating member 16 is mounted on the upper end of the positioning member 14, and the driving member 17 is located on the upper end of the rotating member 16. The rotating member 16 and the positioning member 14 are mounted between the sleeve 18. The driving member 17 can drive the rotating member 16 to rotate, thereby causing the rotating member 16 to push the positioning member 14 downward.

[0054] The lower surface of the rotating member 16 forms a first mating surface 19 and a first contact surface 20. The first mating surface 19 is an inclined surface, and the first contact surface 20 is a horizontal surface. The first contact surface 20 is located at the lowest point of the first mating surface 19. The driving member 17 is used to drive the rotating member 16 to rotate, so that the first mating surface 19 on the rotating member 16 separates from the second mating surface 21 on the positioning member 14, and the first contact surface 20 contacts the second contact surface 22, thereby maintaining the downward movement of the positioning member 14.

[0055] The upper surface of the positioning member 14 forms a second mating surface 21 that mates with the first mating surface 19, and a second contact surface 22 that mates with the first contact surface 20. The second mating surface 21 is an inclined surface that maintains the mating of the second mating surface 21 with the inclined surface of the first mating surface 19. The second contact surface 22 is located at the highest point of the second mating surface 21 and is a horizontal surface, allowing the first contact surface 20 to contact the second contact surface 22. By enabling the first contact surface 20 to mate with the second contact surface 22, the first contact surface 20 maintains the positional definition of the second contact surface 22, thereby maintaining the defined position between the rotating member 16 and the positioning member 14.

[0056] Because the first contact surface 20 is located at the lowest point of the first mating surface 19, and the second contact surface 22 is located at the highest point of the second mating surface 21, the height difference between the rotating member 16 and the positioning member 14 can be maintained, thereby facilitating the rotating member 16 to push the positioning member 14 downward. When the rotating member 16 rotates, it enters the working state, pushing the positioning member 14 downward, causing the first mating surface 19 and the second mating surface 21 to rub against each other, and the first contact surface 20 rotates from the lowest point of the second mating surface 21 to the highest point of the second mating surface 21, thereby mating the first contact surface 20 with the second contact surface 22. Since the first contact surface 20 and the second contact surface 22 are both horizontal surfaces, the maximum descent value of the positioning member 14 is achieved after the first contact surface 20 and the second contact surface 22 come into contact. When the driving member 17 is powered off at this time, the rotating member 16 can maintain the positioning member 14 at its maximum descent value after the first contact surface 20 and the second contact surface 22 are mated.

[0057] The sleeve 18 has a central receiving hole 23, into which the rotating member 16 and the positioning member 14 are mounted. The sleeve 18 also has a central first step chamber 24 and a second step chamber 25. The first step chamber 24 communicates with the receiving hole 23 through the second step chamber 25. The diameter of the first step chamber 24 is larger than that of the second step chamber 25, and the diameter of the second step chamber 25 is larger than that of the receiving hole 23. The rotating member 16 is provided with a retaining portion 26 that cooperates with the second step chamber 25. A permanent magnet 27 and an electromagnet 28 are disposed in the first step chamber 24.

[0058] A first support surface 29 is formed between the first stepped chamber 24 and the second stepped chamber 25, and a second support surface 30 is formed between the second stepped chamber 25 and the receiving hole 23. The first support surface 29 is used to support the symmetrically arranged permanent magnets 27. Since the electromagnet 28 is located between the symmetrical permanent magnets 27, the electromagnet 28 is also located in the first stepped chamber 24. The lower end surface a of the retaining portion 26 is placed on the second support surface 30, and the rotating member 16 can be supported by the second support surface 30 while being kept rotating on the second support surface 30.

[0059] The driving member 17 is composed of symmetrically arranged permanent magnets 27 and an electromagnet 28 installed in the middle of the symmetrical permanent magnets 27. The electromagnet 28 is connected to the upper end of the rotating member 16. The rotating member 16 rotates through the interaction of the attraction or repulsion between the permanent magnets 27 and the electromagnet 28.

[0060] Since the permanent magnet 27 has an N pole and an S pole, when the electromagnet 28 is energized, a magnetic field is generated. By changing the magnetic poles of the electromagnet 28, the electromagnet 28 cooperates with the permanent magnet 27, thereby rotating the rotating member 16. This is well known to those skilled in the art and will not be elaborated on here.

[0061] Positioning member 14 has symmetrically arranged mounting slots 31. Mounting slots 31 contain retaining blocks 32, which prevent the positioning member 14 from rotating. Retaining blocks 32 are connected to the positioning member 14 via retaining pins 33, which are mounted on retaining blocks 32 through pin holes 34. Mounting slots 31 contain mating holes 35 that mate with pin holes 34. This ensures that retaining pins 33 are positioned halfway within pin holes 34 and halfway within mating holes 35, thereby securing retaining blocks 32 within mounting slots 31.

[0062] The sleeve 18 has a limiting groove 36 that cooperates with the retaining block 32, a limiting column 37 is provided in the middle of the limiting groove 36, the retaining block 32 is provided with a limiting hole 38 that cooperates with the limiting column 37, and an elastic member 39 is sleeved on the limiting column 37. The elastic member 39 is a spring, and the upper end of the elastic member 39 contacts the lower surface of the retaining block 32, and the lower end contacts the lower surface of the limiting groove 36.

[0063] The upper surface b of the retaining groove 36 defines a first mounting hole 40, and the lower surface c defines a second positioning hole 41. The retaining block 32 is provided with the first positioning hole 42. The upper end of the elastic member 39 is positioned in the first positioning hole 42, and the lower end is positioned in the second positioning hole 41. A second mounting hole 43 is provided at the lower end of the second positioning hole 41. The retaining post 37 passes through the second mounting hole 43, the second positioning hole 41, the first positioning hole 42, and the retaining hole 38 and is positioned in the first mounting hole 40. The diameter of the first mounting hole 40 is equal to the diameter of the second mounting hole 43, and the diameter of the first positioning hole 42 is equal to the diameter of the second positioning hole 41. The diameter of the first mounting hole 40 matches the diameter of the retaining post 37, and the diameter of the first positioning hole 42 matches the diameter of the elastic member 39. The diameter of the first mounting hole 40 is smaller than the diameter of the first positioning hole 42.

[0064] The height of the limiting groove 36 is H1, and the height of the retaining block 32 is H2, where H1>2*H2, so that the retaining block 32 can slide in the limiting groove 36 without affecting the installation of the retaining block 32.

[0065] The rotation angle of the rotating member 16 is 0-180° or 180-360°, so that the rotating member 16 can rotate 180° in the forward direction or 180° in the reverse direction, thereby pushing the positioning member 14 to descend.

[0066] When the rotating member 16 rotates and pushes the positioning member 14, the first contact surface 20 contacts the second contact surface 22. The distance between the highest point of the first mating surface 19 and the lowest point of the second mating surface 21 is H3.

[0067] When installing the drill bit 4, its lowest point remains below the lower end surface d of the sleeve 18. When the distance H3 is zero, the drill bit 4 is located below the lower end surface d of the sleeve 18, and the positioning member 14 is accommodated in the receiving hole 23. To maintain the position of the circuit board, the positioning member 14 is first pushed by the rotating member 16 to maintain H3 at its maximum value, that is, the first contact surface 20 contacts the second contact surface 22. At this point, the lower end surface e of the positioning member 14 is below the lowest point of the drill bit 4, pressing against the circuit board to initially maintain the circuit board in position. The motor 9 is then started, driving the drill bit 4 to rotate, causing the drill bit 4 to drill a hole in the circuit board. While drilling, the rotating member 16 continues to rotate, causing the first contact surface 20 to begin to disengage from the second contact surface 22, maintaining contact between the first mating surface 19 and the second mating surface 21. The positioning member 14 is then pushed upward by the elastic force of the elastic member 39, and the telescopic cylinder 6 pushes the mounting base 7 downward, causing the drill bit 4 to move downward and begin drilling.

[0068] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PCB printed circuit board precision punching and positioning device, characterized in that: include: a workbench for placing circuit boards; A mounting frame provided at the workbench, on which a telescopic cylinder, a mounting seat, a guide rail, and a motor are provided, wherein the telescopic cylinder is provided on the mounting frame, the mounting seat is provided at the lower end of the telescopic cylinder, the guide rail is provided on the mounting seat, and the motor is provided on the guide rail; and The positioning mechanism is arranged at the lower end of the motor, and the positioning mechanism is provided with a connecting tube, a fixing plate, a drill bit and multiple positioning components installed at the lower end of the fixing plate. The positioning component includes: a rotating member, wherein a lower surface of the rotating member forms a first mating surface and a first contact surface; A positioning member, the upper surface of which forms a second mating surface that cooperates with the first mating surface and a second contact surface that cooperates with the first contact surface, a driving member, the driving member being used to drive the rotating member to rotate, so that the first mating surface on the rotating member is separated from the second mating surface on the positioning member, the first contact surface is in contact with the second contact surface, and the positioning member is kept moving downward; and A sleeve having a receiving hole in the middle thereof, wherein the rotating member and the positioning member are installed in the receiving hole; The driving member is composed of symmetrically arranged permanent magnets and an electromagnet installed between the symmetrical permanent magnets. The electromagnet is connected to the upper end of the rotating member. The rotating member rotates due to the interaction of the attractive force or repulsive force between the permanent magnets and the electromagnet. The first mating surface and the second mating surface are inclined surfaces, and the first contact surface and the second contact surface are horizontal surfaces.

2. The PCB printed circuit board precise punching and positioning device according to claim 1, characterized in that: The positioning member is provided with symmetrically arranged mounting grooves, in which a retaining block is provided for keeping the positioning member from moving only up and down. The retaining block prevents the positioning member from rotating, and the retaining block is connected to the positioning member via a limit pin.

3. The PCB printed circuit board precise punching and positioning device according to claim 2, characterized in that: The sleeve has a limiting groove that cooperates with the retaining block, a limiting column is provided in the middle of the limiting groove, the retaining block has a limiting hole that cooperates with the limiting column, and an elastic part is sleeved on the limiting column. The upper end of the elastic part contacts the lower surface of the retaining block, and the lower end contacts the lower surface of the limiting groove.

4. The PCB printed circuit board precise punching and positioning device according to claim 3, characterized in that: The height of the limiting groove is H1, the height of the retaining block is H2, and H1>2*H2.

5. The PCB printed circuit board precise punching and positioning device according to claim 1, characterized in that: The positioning components are evenly arranged on the lower surface of the fixed plate in a multi-ring shape.

6. The PCB printed circuit board precise punching and positioning device according to claim 1, characterized in that: The rotation angle of the rotating member is 0-180° or 180-360°.

7. The PCB printed circuit board precise punching and positioning device according to claim 1, characterized in that: The sleeve also has a first step chamber and a second step chamber in the middle. The first step chamber is connected to the accommodating hole through the second step chamber. The diameter of the first step chamber is larger than the diameter of the second step chamber, and the diameter of the second step chamber is larger than the diameter of the accommodating hole.

8. The PCB printed circuit board precise punching and positioning device according to claim 7, characterized in that: The rotating member is provided with a retaining portion that cooperates with the second step chamber, and the permanent magnet and the electromagnet are arranged in the first step chamber.

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