A PCB drilling positioning device with a bow structure

Abstract

The present invention relates to the technical field of PCB board processing, and in particular to a PCB board drilling and positioning device with a curved structure, comprising a base, a fixed plate fixedly connected to one side wall of the base, a fixed frame slidably arranged on the upper end of the fixed plate, an electric push rod fixedly connected between one end of the fixed frame and the fixed plate, a cylinder fixedly connected to one side wall of the fixed frame close to the base, a sliding groove fixedly connected to the other end of the cylinder, a clamping mechanism arranged in the sliding groove, an alternating mechanism arranged in the clamping mechanism, and an upward movement mechanism arranged in the alternating mechanism. The PCB board drilling and positioning device with a curved structure provided by the present invention, through the setting of the clamping mechanism, makes the various positions of the PCB board evenly stressed and not easy to slide, and adopts multiple movable plug rods to clamp PCB boards of different curvatures, and through the setting of the alternating mechanism, the movable plug rod and the pressure frame on the annular block can be respectively and successively contracted inwards, so that the position where the PCB board is clamped can also be punched.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board processing, and in particular to a PCB board drilling positioning device with a bow structure. Background Art

[0002] PCB printed circuit board is one of the important components of the electronics industry. It is used in various electronic components of integrated circuits to realize the electrical connection between the components in the circuit. It needs to adopt standardized design, which is conducive to mechanization and automation in the production process. During the processing of PCB boards, it is necessary to drill holes in the PCB boards.

[0003] In the prior art, some PCB boards are in a bow shape. When drilling, the PCB board material is relatively brittle, and if there is not enough support force, physical deformation will occur in a local area of ​​the PCB board. In addition, the bowed PCB board is not easy to fix and is prone to deviation when drilling. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a PCB board drilling positioning device with a bow structure.

[0005] The present invention adopts the following technical scheme: a PCB board drilling positioning device with a bow structure, comprising a base and a drilling mechanism arranged at the upper end of the base, a fixed plate is fixedly connected to one side wall of the base, a fixed frame is slidably arranged at the upper end of the fixed plate, an electric push rod is fixedly connected between one end of the fixed frame and the fixed plate, a cylinder is fixedly connected to one side wall of the fixed frame close to the base, a sliding groove is fixedly connected to the other end of the cylinder, a clamping mechanism is arranged in the sliding groove, an alternating mechanism is arranged in the clamping mechanism, an upward movement mechanism is arranged in the alternating mechanism, and a square groove is opened on one side of the sliding groove, which is located on the side wall of the base;

[0006] The camming mechanism comprises a circular block slidably arranged at one end of the sliding groove, and a movable insertion rod is movably inserted into the outer wall of one end of the circular block located in the sliding groove, and a connecting frame is fixedly connected to the opposite sides of the outer wall of one end of the circular block located outside the sliding groove, and the other end of the connecting frame is slidably inserted in the sliding groove, and the one end of the connecting frame located in the sliding groove is fixedly connected with the first spring between the sliding groove and the one end. The lower side of the connecting frame is located in the sliding groove and a lifting frame is provided for sliding up and down. One side of the bottom end of the lifting frame is fixedly connected to the base, and an annular block is provided in the sliding groove at the opposite side of the movable insertion rod, and the bottom end of the annular block and the bottom end of the movable insertion rod are respectively fixedly connected to the first support block and the second support block, and a special-shaped rotating block is rotatably arranged at the inner center of the circular block, and a torsion spring is fixedly connected between the outer wall of the central axis of the special-shaped rotating block and the circular block.

[0007] As a further description of the above technical scheme: the alternating mechanism includes a fixed squeezing frame fixedly connected to the upper surface of one end of the fixed frame close to the base, one side of the fixed squeezing frame is located in the sliding groove and is slidably provided with a sliding plate, the upper end of the sliding plate is located at the lower side of the second support block and is fixedly connected with an arc block, the second spring is fixedly connected between the side wall of one end of the sliding plate and the sliding groove, and the movable plug rod and the opposite side wall of the annular block are movably inserted with a sliding frame, and the upper side of the sliding frame is located at the top of the movable plug rod or the annular block and is slidably provided with a pressing frame up and down. One end of the pressing frame is fixedly connected with a connecting rod, and the connecting rod is movably arranged in the movable plug rod or the annular block, a sliding sleeve is movably sleeved on the outer side of the bottom end of the connecting rod, and a trapezoidal rod is slidably sleeved on the lower side of the sliding sleeve, and a fourth spring is fixedly connected between the end of the sliding sleeve away from the sliding frame and the movable plug rod or the annular block, a sliding plug rod is slidably provided at the bottom end of the pressing frame, and a trapezoidal sleeve rod is movably sleeved on the outer side of the bottom end of the sliding plug rod, and a third spring is fixedly connected between the bottom end of the trapezoidal sleeve rod and the movable plug rod or the annular block.

[0008] As a further description of the above technical solution: the upward movement mechanism includes a protrusion fixedly connected to the pressure frame near one end of the movable insertion rod, a guide groove is opened on one side wall of the movable insertion rod, a guide rod is movably arranged in the guide groove, the other end of the guide rod is fixed to the protrusion, and a fifth spring is fixedly connected between one end of the sliding insertion rod located in the trapezoidal sleeve rod and the trapezoidal sleeve rod.

[0009] As a further description of the above technical solution: a plurality of sliding frames are arranged on the movable insertion rod or the annular block, and the plurality of sliding frames are arranged at equal intervals.

[0010] As a further description of the above technical solution: a plurality of movable insertion rods are provided, and the plurality of movable insertion rods are arranged in a ring shape with equal intervals, and an inclined groove is provided on one side of the movable insertion rod on the special-shaped rotating block.

[0011] As a further description of the above technical solution: the bottom ends of the connecting frame and the lifting frame are both provided with inclined surfaces.

[0012] As a further description of the above technical solution: the arc block is located at the lower side of the second supporting block and the first supporting block.

[0013] As a further description of the above technical solution: a plurality of the fourth springs are provided, and the plurality of the fourth springs are arranged at equal intervals, and a triangular block is provided at one end of the sliding sleeve close to the sliding frame.

[0014] The present invention provides a PCB drilling positioning device with a bow structure through improvement, which has the following improvements and advantages compared with the prior art:

[0015] First, when in use, the PCB board with a bow shape is first placed on the upper ends of the first bracket block and the second bracket block, and then the sliding groove is moved toward the base by the cylinder. When the sliding groove moves to the upper side of the extrusion bar, the extrusion bar squeezes the lifting frame, and the lifting frame moves upward. Then the lifting frame slides the connecting frame toward the cylinder, so that the connecting frame drives the circular block to move toward the cylinder, so that the movable plug rod and the relative side walls of the annular block clamp the PCB board tightly. When several movable plug rods are squeezed inward, the special-shaped rotating block will rotate. Through the cooperation of the movable plug rod and the inclined groove on the special-shaped rotating block, the distance moved by each movable plug rod to the special-shaped rotating block is equal, so that each movable plug rod is pressed inward to the same extent. Through the setting of the clamping mechanism, the force at each position of the PCB board is uniform and it is not easy to slide. In addition, by using multiple movable plug rods, PCB plates with different curvatures can be clamped.

[0016] Second, when the movable plug rod and the annular block clamp the plate, the PCB board will squeeze the sliding frame inward, and then the sliding frame squeezes the trapezoidal sleeve rod downward, and the trapezoidal sleeve rod drives the pressing frame to move downward, clamping the upper and lower ends of the PCB board, and the sliding groove is moved by the cylinder to change the drilling position. When the lower end of the drilling mechanism is close to the movable plug rod, the pressing frame on the movable plug rod shrinks inward, so that the drilling mechanism can drill blind holes on the upper surface of the PCB board without obstruction. Similarly, when the lower end of the drilling mechanism is close to the annular block, the pressing frame on the annular block shrinks inward. Through the setting of the alternating mechanism, the pressing frames on the movable plug rod and the annular block can shrink inward in turn, respectively, so that the position where the PCB board is clamped can also be punched;

[0017] Thirdly, when the pressing frame contracts inwardly, due to the guiding effect of the guide rod and the guide groove, the pressing frame and the protrusion can move upward while contracting inwardly. By setting the upward movement mechanism, the pressing frame will not generate friction with the upper surface of the PCB when contracting inwardly, thereby preventing the upper surface of the PCB from being worn;

[0018] To sum up, through the setting of the clamping mechanism, the force is evenly applied to each position of the PCB board and it is not easy to slide. By adopting multiple movable rods, PCB boards with different curvatures can be clamped. Through the setting of the alternating mechanism, the movable rods and the pressure frames on the annular block can be retracted inwards in turn, so that holes can be punched at the clamped position of the PCB board. Through the setting of the upward movement mechanism, the pressure frame will not generate friction with the upper surface of the PCB board when it retracts inwards, thereby preventing the upper surface of the PCB board from being worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1A schematic diagram of the structure of a PCB drilling positioning device with a curved structure provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of a sliding slot provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the structure of a movable plug rod provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the structure of a lifting frame provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of a special-shaped rotating block provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the structure of a press frame provided by an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the structure of a guide groove provided in an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the structure of an alternating mechanism provided by an embodiment of the present invention;

[0028] Fig. 9 A cross-sectional view of a connecting rod provided in an embodiment of the present invention;

[0029] Fig.10 for Figure 3 Enlarged view of point A in the middle.

[0030] In the figure: 1, base; 2, drilling mechanism; 3, fixed plate; 4, fixed frame; 5, electric push rod; 6, cylinder; 7, sliding groove; 8, clamping mechanism; 81, round block; 82, movable plug rod; 83, connecting frame; 84, extrusion strip; 85, lifting frame; 86, first spring; 87, annular block; 88, first support block; 89, second support block; 810, special-shaped rotating block; 811, torsion spring; 9, alternating mechanism; 91 , fixed squeezing frame; 92, sliding plate; 93, arc block; 94, second spring; 95, trapezoidal rod; 96, sliding frame; 97, pressing frame; 98, connecting rod; 99, trapezoidal sleeve rod; 910, third spring; 911, sliding sleeve; 912, fourth spring; 10, upward movement mechanism; 101, protrusion; 102, guide rod; 103, guide groove; 104, sliding plug rod; 105, fifth spring; 11, square groove. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0032] See also Figure 1-Figure 10 The embodiment of the present invention provides a technical solution: a PCB board drilling positioning device with a bow structure, comprising a base 1 and a drilling mechanism 2 arranged at the upper end of the base 1, a fixed plate 3 is fixedly connected to one side wall of the base 1, a fixed frame 4 is slidably arranged on the upper end of the fixed plate 3, an electric push rod 5 is fixedly connected between one end of the fixed frame 4 and the fixed plate 3, a cylinder 6 is fixedly connected to one side wall of the fixed frame 4 close to the base 1, a sliding groove 7 is fixedly connected to the other end of the cylinder 6, a clamping mechanism 8 is arranged in the sliding groove 7, an alternating mechanism 9 is arranged in the clamping mechanism 8, an upward movement mechanism 10 is arranged in the alternating mechanism 9, and a square groove 11 is opened on one side of the sliding groove 7 on the side wall of the base 1;

[0033] The clamping mechanism 8 includes a circular block 81 slidably arranged at one end of the sliding groove 7, a movable insertion rod 82 is movably inserted into the outer wall of one end of the circular block 81 located in the sliding groove 7, a connecting frame 83 is fixedly connected to the two opposite sides of the outer wall of the end of the circular block 81 located outside the sliding groove 7, and the other end of the connecting frame 83 is slidably inserted into the sliding groove 7, a first spring 86 is fixedly connected between the end of the connecting frame 83 located in the sliding groove 7 and the sliding groove 7, a lifting frame 85 is slidably arranged at the lower side of the connecting frame 83 in the sliding groove 7, and a pressing strip 84 is fixedly connected to the base 1 at one side of the bottom end of the lifting frame 85, and a ring is arranged at the opposite side of the movable insertion rod 82 in the sliding groove 7. The first supporting block 88 and the second supporting block 89 are fixedly connected to the bottom ends of the annular block 87 and the movable plug rod 82 respectively. A special-shaped rotating block 810 is rotatably arranged at the inner center of the circular block 81. A torsion spring 811 is fixedly connected between the outer wall of the central axis of the special-shaped rotating block 810 and the circular block 81. A plurality of sliding frames 96 are arranged on the movable plug rod 82 or the annular block 87. The plurality of sliding frames 96 are arranged at equal intervals. A plurality of movable plug rods 82 are arranged at equal intervals in a ring shape. An inclined groove is provided on the special-shaped rotating block 810 on one side of the movable plug rod 82. The bottom ends of the connecting frame 83 and the lifting frame 85 are provided with inclined surfaces.

[0034] Specifically, when in use, the PCB board with a bow shape is first placed on the upper ends of the first bracket 88 and the second bracket 89, and then the sliding groove 7 is moved toward the base 1 by the cylinder 6. When the sliding groove 7 moves to the upper side of the extrusion bar 84, the extrusion bar 84 squeezes the lifting frame 85, and the lifting frame 85 moves upward. Then, the lifting frame 85 slides the connecting frame 83 toward the cylinder 6, so that the connecting frame 83 drives the circular block 81 to move toward the cylinder 6, so that the relative position of the movable plug rod 82 and the annular block 87 is The side wall clamps the PCB board tightly. When several movable rods 82 are squeezed inward, the special-shaped rotating block 810 will rotate. Through the cooperation between the movable rods 82 and the inclined grooves on the special-shaped rotating block 810, the distances moved toward the special-shaped rotating block 810 by each movable rod 82 are equal, so that the degree of inward pressure on each movable rod 82 is the same, so that each position of the PCB board is evenly stressed and not easy to slide. In addition, by using multiple movable rods 82, PCB boards with different curvatures can be clamped.

[0035] In another embodiment provided by the present invention, the alternating mechanism 9 includes a fixed squeeze frame 91 fixed to the upper surface of one end of the fixed frame 4 close to the base 1, one side of the fixed squeeze frame 91 is located in the sliding groove 7 and is provided with a sliding plate 92 for sliding left and right sliding, the upper end of the sliding plate 92 is located at the lower side of the second bracket 89 and is fixed with an arc block 93, a second spring 94 is fixed between the side wall of one end of the sliding plate 92 and the sliding groove 7, the movable plug rod 82 and the annular block 87 are both movably inserted with a sliding frame 96 on the opposite side walls, the upper side of the sliding frame 96 is located at the top of the movable plug rod 82 or the annular block 87 and is slidable up and down with a pressing frame 97, one end of the pressing frame 97 is fixed with a connecting rod 98, and the connecting rod 98 is movably arranged in the movable plug rod 82 or the annular block 87, A sliding sleeve 911 is provided on the outer movable sleeve at the bottom end of the connecting rod 98, and a trapezoidal rod 95 is slidably arranged on the lower side of the sliding sleeve 911, and a fourth spring 912 is fixedly connected between the end of the sliding sleeve 911 away from the sliding frame 96 and the movable plug rod 82 or the annular block 87, a sliding plug rod 104 is slidably arranged on the bottom end of the pressure frame 97, and a trapezoidal sleeve rod 99 is provided on the outer movable sleeve at the bottom end of the sliding plug rod 104, and a third spring 910 is fixedly connected between the bottom end of the trapezoidal sleeve rod 99 and the movable plug rod 82 or the annular block 87, the arc block 93 is located on the lower side of the second support block 89 and the first support block 88, a plurality of fourth springs 912 are provided, and the plurality of fourth springs 912 are arranged at equal intervals, and a triangular block is provided on the end of the sliding sleeve 911 close to the sliding frame 96.

[0036] Specifically, when the movable plug rod 82 and the annular block 87 clamp the plate, the PCB board will squeeze the sliding frame 96 inward, and then the sliding frame 96 will squeeze the trapezoidal sleeve rod 99 downward, and the trapezoidal sleeve rod 99 will drive the pressing frame 97 to move downward, clamp the upper and lower ends of the PCB board, and change the drilling position by moving the sliding groove 7 through the cylinder 6. When the lower end of the drilling mechanism 2 is close to the movable plug rod 82, the fixed squeezing frame 91 will squeeze the sliding plate 92 to one side, so that the arc block 93 moves to the lower side of the second supporting block 89 and the movable plug rod 82, and the arc block 93 squeezes the trapezoidal rod 95 upward, so that the sliding sleeve 911, the connecting rod 98 and the pressing frame 97 move to the side away from the sliding frame 96, so that the pressing frame 97 on the movable plug rod 82 shrinks inward, so that the drilling mechanism 2 is on the PCB Blind holes can be drilled on the upper surface of the board without obstruction. Similarly, when the lower end of the drilling mechanism 2 is close to the annular block 87, the pressure frame 97 on the annular block 87 contracts inwardly, so that the movable insertion rod 82 and the pressure frame 97 on the annular block 87 can be contracted inwardly in turn, so that holes can also be punched at the position where the PCB board is clamped.

[0037] In another embodiment provided by the present invention, the upward movement mechanism 10 includes a protrusion 101 fixedly connected to the pressure frame 97 near one end of the movable insertion rod 82, a guide groove 103 is provided on one side wall of the movable insertion rod 82, a guide rod 102 is movably arranged in the guide groove 103, the other end of the guide rod 102 is fixedly connected to the protrusion 101, and a fifth spring 105 is fixedly connected between one end of the sliding insertion rod 104 located in the trapezoidal sleeve rod 99 and the trapezoidal sleeve rod 99.

[0038] Specifically, when the pressing frame 97 contracts inwardly, due to the guiding effect of the guide rod 102 and the guide groove 103, the pressing frame 97 and the protrusion 101 can move upward while contracting inwardly, so that the pressing frame 97 will not generate friction on the upper surface of the PCB board when it contracts, thereby preventing the PCB board from being worn.

[0039] Working principle: When in use, first place the PCB board with a bow shape on the upper ends of the first bracket 88 and the second bracket 89, then move the sliding groove 7 toward the base 1 through the cylinder 6, when the sliding groove 7 moves to the upper side of the extrusion bar 84, the extrusion bar 84 squeezes the lifting frame 85, and the lifting frame 85 moves upward, and then the lifting frame 85 slides the connecting frame 83 toward the cylinder 6, so that the connecting frame 83 drives the circular block 81 to move toward the cylinder 6, so that the movable plug rod 82 and the opposite side walls of the annular block 87 clamp the PCB board tightly, and when several movable plug rods 82 are squeezed inwardly, the special-shaped rotating block 810 will rotate, and through the cooperation of the movable plug rod 82 and the inclined groove on the special-shaped rotating block 810, the distance moved by each movable plug rod 82 to the special-shaped rotating block 810 is equal, so that the degree of inward pressure on each movable plug rod 82 is the same, so that each position of the PCB board The force is evenly distributed and not easy to slide. In addition, multiple movable insertion rods 82 are used to clamp PCB plates of different curvatures. When the movable insertion rod 82 and the annular block 87 clamp the plate, the PCB board will squeeze the sliding frame 96 inward, and then the sliding frame 96 will squeeze the trapezoidal sleeve rod 99 downward, and the trapezoidal sleeve rod 99 drives the pressing frame 97 to move downward to clamp the upper and lower ends of the PCB board, and the sliding groove 7 is moved by the cylinder 6 to change the drilling position. When the lower end of the drilling mechanism 2 is close to the movable insertion rod 82, the fixed squeezing frame 91 will squeeze the sliding plate 92 to one side, so that the arc block 93 moves to the lower side of the second support block 89 and the movable insertion rod 82, and the arc block 93 squeezes the trapezoidal rod 95 upward, so that the sliding sleeve 911, the connecting rod 98 and the pressing frame 97 move to the side away from the sliding frame 96, so that the pressing frame 97 on the movable insertion rod 82 shrinks inward, so that the drilling mechanism 2 is on the PCB Blind holes can be drilled unhindered on the upper surface of the board. Similarly, when the lower end of the drilling mechanism 2 is close to the annular block 87, the pressure frame 97 on the annular block 87 contracts inwardly, so that the movable insertion rod 82 and the pressure frame 97 on the annular block 87 can be contracted inwardly in turn, so that holes can also be punched at the position where the PCB board is clamped. When the pressure frame 97 contracts inwardly, due to the guiding effect of the guide rod 102 and the guide groove 103, the pressure frame 97 and the protrusion 101 can move upward while contracting inwardly, which prevents the pressure frame 97 from generating friction on the upper surface of the PCB board when it contracts, thereby preventing the PCB board from being worn.

[0040] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A PCB drilling positioning device with a curved structure, comprising a base (1) and a drilling mechanism (2) arranged on the upper end of the base (1), characterized in that: A fixed plate (3) is fixedly connected to one side wall of the base (1); a fixed frame (4) is slidably provided on the upper end of the fixed plate (3); an electric push rod (5) is fixedly connected between one end of the fixed frame (4) and the fixed plate (3); a cylinder (6) is fixedly connected to one side wall of the fixed frame (4) close to the base (1); a sliding groove (7) is fixedly connected to the other end of the cylinder (6); a clamping mechanism (8) is provided in the sliding groove (7); an alternating mechanism (9) is provided in the clamping mechanism (8); an upward movement mechanism (10) is provided in the alternating mechanism (9); and a square groove (11) is provided on one side of the sliding groove (7) located on the side wall of the base (1); The clamping mechanism (8) comprises a circular block (81) slidably arranged at one end of the sliding groove (7); a movable insertion rod (82) is movably inserted into the outer wall of one end of the circular block (81) located in the sliding groove (7); two opposite sides of the outer wall of one end of the circular block (81) located outside the sliding groove (7) are fixedly connected with connecting frames (83); and the other end of the connecting frame (83) is slidably inserted in the sliding groove (7); a first spring (86) is fixedly connected between one end of the connecting frame (83) located in the sliding groove (7) and the sliding groove (7); the lower side of the connecting frame (83) is located in the upper part of the sliding groove (7). A lifting frame (85) is provided for downward sliding movement, one side of the bottom end of the lifting frame (85) is fixedly connected to an extrusion strip (84) on the base (1), an annular block (87) is provided in the sliding groove (7) on the side opposite to the movable insertion rod (82), the bottom ends of the annular block (87) and the bottom ends of the movable insertion rod (82) are respectively fixedly connected to a first support block (88) and a second support block (89), a special-shaped rotating block (810) is rotatably provided at the center of the circular block (81), and a torsion spring (811) is fixedly connected between the outer wall of the central axis of the special-shaped rotating block (810) and the circular block (81); A plurality of movable insertion rods (82) are provided, and the plurality of movable insertion rods (82) are arranged in a ring shape with equal spacing, and an inclined groove is provided on one side of the movable insertion rod (82) on the special-shaped rotating block (810); When in use, a PCB board with a bow shape is first placed on the upper ends of the first bracket (88) and the second bracket (89), and then the sliding groove (7) is moved toward the base (1) by the cylinder (6). When the sliding groove (7) moves to the upper side of the extrusion bar (84), the extrusion bar (84) squeezes the lifting frame (85), and the lifting frame (85) moves upward. Then, the lifting frame (85) slides the connecting frame (83) toward the cylinder (6), so that the connecting frame (83) drives the circular block (81) to move toward the cylinder (6), thereby making the movable plug rod (82) and the annular block (87) The PCB board is clamped tightly by the opposite side walls. When a plurality of movable plug rods (82) are pressed inwardly, the special-shaped rotating block (810) is rotated. Through the cooperation between the movable plug rods (82) and the inclined grooves on the special-shaped rotating block (810), the distances moved toward the special-shaped rotating block (810) by each movable plug rod (82) are equal, so that each movable plug rod (82) is pressed inwardly to the same extent. Through the setting of the clamping mechanism (8), each position of the PCB board is subjected to uniform force and is not easy to slide. In addition, by using a plurality of movable plug rods (82), PCB boards with different curvatures can be clamped.

2. The device for drilling and positioning a PCB board with a bow structure according to claim 1, characterized in that: The alternating mechanism (9) comprises a fixed squeeze frame (91) fixedly connected to the upper surface of one end of the fixed frame (4) close to the base (1); one side of the fixed squeeze frame (91) is located in the sliding groove (7) and is provided with a sliding plate (92) for sliding left and right; the upper end of the sliding plate (92) is located at the lower side of the second support block (89) and is fixedly connected to an arc block (93); a second spring (94) is fixedly connected between the side wall of one end of the sliding plate (92) and the sliding groove (7); the movable insertion rod (82) and the annular block (87) are both movably inserted with a sliding frame (96); the upper side of the sliding frame (96) is located at the top of the movable insertion rod (82) or the annular block (87) and is slidable up and down, and a pressing frame (97) is fixedly connected at one end of the pressing frame (97) A connecting rod (98) is movably arranged in a movable plug rod (82) or an annular block (87); a sliding sleeve (911) is provided on the outer movable sleeve at the bottom end of the connecting rod (98); a trapezoidal rod (95) is slidably arranged on the lower side of the sliding sleeve (911); a fourth spring (912) is fixedly connected between the end of the sliding sleeve (911) away from the sliding frame (96) and the movable plug rod (82) or the annular block (87); a sliding plug rod (104) is slidably arranged at the bottom end of the pressure frame (97); a trapezoidal sleeve rod (99) is provided on the outer movable sleeve at the bottom end of the sliding plug rod (104); a third spring (910) is fixedly connected between the bottom end of the trapezoidal sleeve rod (99) and the movable plug rod (82) or the annular block (87).

3. The device for drilling and positioning a PCB board with a bow structure according to claim 2, characterized in that: The upward movement mechanism (10) comprises a protrusion (101) fixedly connected to the pressure frame (97) near one end of the movable insertion rod (82); a guide groove (103) is provided on one side wall of the movable insertion rod (82); a guide rod (102) is movably arranged in the guide groove (103); the other end of the guide rod (102) is fixedly connected to the protrusion (101); and a fifth spring (105) is fixedly connected between one end of the sliding insertion rod (104) located in the trapezoidal sleeve rod (99) and the trapezoidal sleeve rod (99).

4. The device for drilling and positioning a PCB board with a bow structure according to claim 1, characterized in that: A plurality of sliding frames (96) are provided on the movable insertion rod (82) or the annular block (87), and the plurality of sliding frames (96) are arranged at equal intervals.

5. The device for drilling and positioning a PCB board with a bow structure according to claim 1, characterized in that: The bottom ends of the connecting frame (83) and the lifting frame (85) are both provided with inclined surfaces.

6. The device for drilling and positioning a PCB board with a bow structure according to claim 2, characterized in that: The arc-shaped block (93) is located at the lower side of the second supporting block (89) and the first supporting block (88).

7. The device for drilling and positioning a PCB board with a bow structure according to claim 2, characterized in that: A plurality of the fourth springs (912) are provided, and the plurality of the fourth springs (912) are arranged at equal intervals. A triangular block is provided at one end of the sliding sleeve (911) close to the sliding frame (96).

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