Drilling device convenient to position and used for circuit board processing

Abstract

The invention relates to the technical field of circuit board manufacturing and production, in particular to a circuit board processing drilling device convenient to position, which comprises a rack, two electric sliding rails are symmetrically mounted in the rack, and a placing table for placing a circuit board is connected between sliding blocks of the two electric sliding rails; and positioning mechanisms for fixing the circuit board on the placement table are arranged at the tops of the two electric sliding rails. The placing table is vacuumized through the first vacuum pump, automatic adsorption and fixation of the circuit board can be achieved, through cooperation of the first electric push rod, the connecting block, the push block and the first spring, the clamping block can be driven to automatically clamp and fix the circuit board to the placing table, and the pressing block can be driven to automatically press and fix the circuit board to the placing table. According to the circuit board positioning device, the circuit board can be automatically positioned, and the circuit board can be stably positioned, so that the circuit board is prevented from moving and tilting during drilling, and the drilling precision can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board manufacturing and production, and in particular to a drilling device for circuit board processing which is easy to position. Background Art

[0002] In the manufacturing process of circuit boards, it is usually necessary to drill holes on them to facilitate the subsequent installation and connection of electronic components and the fixation of the circuit boards. Although there are devices that can automatically drill holes in circuit boards, in actual applications, the existing circuit board drilling equipment still has the following defects: 1. Manually fix the circuit board: Current equipment usually requires manual fixation of the circuit board to the processing platform to prevent it from warping during the drilling process, thereby affecting the drilling accuracy. After the drilling is completed, the circuit board needs to be manually released. This process is not only cumbersome, but also increases labor intensity and reduces work efficiency.

[0003] 2. Thermal deformation problem: During the drilling process, the friction between the drill bit and the circuit board will generate heat, causing the local temperature to rise, which may cause problems such as warping of the circuit board, thereby affecting the overall quality of the circuit board. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a drilling device for circuit board processing that is easy to position and can automatically position the circuit board and effectively cool the drilling area of ​​the circuit board.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a drilling device for processing circuit boards that is easy to position, comprising a frame, a three-axis mobile platform is installed on the frame, a drilling machine is installed on the three-axis mobile platform, two electric slide rails are symmetrically installed in the frame, a placement table for placing the circuit board is connected between the sliders of the two electric slide rails, a positioning plate for positioning the circuit board is connected to the top of the placement table, air holes are spaced apart on the top of the placement table, an exhaust component for extracting the gas inside the placement table is provided on the outside of the placement table, a collection frame that can be extracted outward is provided in the placement table, and the tops of the two electric slide rails are provided with a The circuit board is fixed on the placement table by a positioning mechanism, the positioning mechanism includes a group of electric push rods one installed on the top of the electric slide rail, a clamping block for clamping the circuit board is slidably provided on the push rod of the electric push rod one, a connecting block is connected to the push rod of the electric push rod one, a spring is connected between the connecting block and the clamping block, a pressure block is hinged on the top of the clamping block, a spring is connected between the pressure block and the clamping block, a push block is connected to the push rod of the electric push rod one, which is used to push the pressure block to rotate downward to press the circuit board and fix it on the placement table, a distance sensor is installed on the top of the pressure block, and a cooling mechanism is provided on the three-axis mobile platform for cooling the drilling area of ​​the circuit board.

[0006] Preferably, the cooling mechanism includes a micro refrigerator installed on the Z-axis guide rail of the three-axis mobile platform, a connecting ring is connected to the outer shell of the drilling machine, a telescopic rod is connected to the bottom of the connecting ring, a lifting plate is connected to the telescopic rod, and an annular cooling plate is connected to the lifting plate. When the drill bit of the drilling machine moves down to drill a hole, it enters the inner side of the annular cooling plate. An annular copper tube is connected to the top of the annular cooling plate, and the annular copper tube is connected to the micro refrigerator through a hose. Spring 2 is connected between the lifting plate and the fixed end of the telescopic rod.

[0007] Preferably, the vacuum extraction assembly includes a vacuum pump 1 installed outside the placement table, and the vacuum pump 1 is connected to the inside of the placement table through an air suction pipe.

[0008] Preferably, a first rubber block for buffering and protecting the circuit board is connected to the clamping portion of the clamping block, and a second rubber block for buffering and protecting the circuit board is connected to the bottom of the pressing block.

[0009] Preferably, a loading and unloading mechanism is provided on the frame, and the loading and unloading mechanism includes a mounting frame installed on the frame, a storage frame for storing circuit boards is connected to the lower part of the mounting frame, a linear motor is installed at the lower part of the mounting frame, a push plate is connected to the linear motor, and is used to push the circuit boards in the storage frame to the placement table, and openings are opened at the lower part of both sides of the storage frame for the push plate to move, and the height of the opening matches the thickness of the circuit board, an XZ-axis moving platform is installed on the upper part of the mounting frame, a suction cup grabber is installed on the XZ-axis moving platform, and a vacuum pump 2 is installed on the XZ-axis moving platform, and the vacuum pump 2 is connected to the suction cup grabber through a telescopic tube.

[0010] Preferably, a cleaning mechanism for cleaning waste on the placement table is provided on the outside of the storage frame, and the cleaning mechanism includes two electric push rods 2 respectively hinged on the outer walls on both sides of the storage frame, a scraper is connected between the push rods of the two electric push rods 2, and a torsion spring is connected between the electric push rods 2 and the storage frame.

[0011] Preferably, a contact wheel for reducing the friction between the push block and the pressure block is provided at the bottom of the push block.

[0012] Preferably, a sealing strip is connected to the top of the collecting frame for sealing a gap between the collecting frame and the placing table.

[0013] Preferably, the collecting frame is made of iron, and a magnet for attracting the iron collecting frame is embedded on the side wall of the placing table.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By evacuating the placement table with a vacuum pump, the circuit board can be automatically adsorbed and fixed. Through the cooperation of the electric push rod, the connecting block, the push block and the spring, not only can the clamping block be driven to automatically clamp and fix the circuit board on the placement table, but also the pressing block can be driven to automatically press the circuit board down and fix it on the placement table. Not only the automatic positioning of the circuit board is achieved, but also the circuit board can be firmly positioned to avoid displacement and warping of the circuit board during drilling, thereby improving the drilling accuracy.

[0015] 2. The micro refrigerator can make the liquid refrigerant circulate in the annular copper tube to take away the heat on the annular cooling plate. The annular cooling plate can effectively cool the drilling area of ​​the circuit board to avoid excessive local temperature of the circuit board and reduce the risk of thermal deformation, thereby avoiding warping of the circuit board and improving the overall quality of the circuit board.

[0016] 3. The loading and unloading mechanism can realize automatic loading and unloading of circuit boards, which improves the degree of automation. There is no need for manual loading and unloading, which reduces labor intensity and improves processing efficiency.

[0017] 4. The electric push rod 2 can drive the scraper to move and scrape the waste on the placement table backwards to prevent the waste from remaining on the placement table and affecting the drilling of the next circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0020] Figure 3 It is a schematic diagram of the connection between the collecting frame and the sealing strip of the present invention.

[0021] Figure 4 It is a schematic diagram of the installation of the positioning mechanism of the present invention.

[0022] Figure 5 The three-dimensional structure diagram of the positioning mechanism of the present invention is shown in FIG. Figure 1 .

[0023] Figure 6 The three-dimensional structure diagram of the positioning mechanism of the present invention is shown in FIG. Figure 2 .

[0024] Figure 7 It is a partial three-dimensional structural schematic diagram of the positioning mechanism of the present invention.

[0025] Figure 8 It is a schematic diagram of the installation of the cooling mechanism of the present invention.

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the cooling mechanism of the present invention.

[0027] Fig.10 It is a schematic diagram of the installation of the loading and unloading mechanism and the cleaning mechanism of the present invention.

[0028] Fig.11 It is a three-dimensional structural schematic diagram of the loading and unloading mechanism of the present invention.

[0029] Fig.12 It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present invention.

[0030] In the figure: 1-frame, 2-three-axis mobile platform, 3-drilling machine, 4-electric slide rail, 5-placing table, 50-positioning plate, 51-air hole, 52-magnet, 6-collection frame, 61-sealing strip, 71-vacuum pump 1, 72-suction pipe, 81-electric push rod 1, 82-clamp block, 821-rubber block 1, 83-connecting block, 84-spring 1, 85-push block, 851-contact wheel, 86-pressure block, 861-rubber block 2, 87-shrapnel, 88-distance sensor, 91-micro Refrigerator, 92-connecting ring, 93-telescopic rod, 94-lifting plate, 95-annular cooling plate, 96-hose, 97-annular copper tube, 98-spring II, 101-mounting frame, 102-storage frame, 103-linear motor, 104-push plate, 105-through port, 106-XZ axis moving platform, 107-suction cup grabber, 108-vacuum pump II, 109-telescopic tube, 111-electric push rod II, 112-scraper, 113-torsion spring, 12-support plate, 13-frame. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0032] See also Figure 1-Figure 4, a drilling device for processing circuit boards that is easy to position, comprises a frame 1, a three-axis movable platform 2 is installed at the upper rear part of the frame 1, a drilling machine 3 is installed on the three-axis movable platform 2, the three-axis movable platform 2 can drive the drilling machine 3 to move forward, backward, left, right, up and down in three axes to drill holes in the circuit board through the three-axis movable platform 2, the three-axis movable platform 2 is a prior art and will not be described in detail here, two electric slide rails 4 are symmetrically installed in the frame 1, a placing table 5 for placing the circuit board is connected between the sliders of the two electric slide rails 4, a positioning plate 50 for positioning the circuit board is connected to the rear side of the top of the placing table 5, air holes 51 are spaced apart at the top of the placing table 5, an exhaust component for extracting the gas inside the placing table 5 is provided on the outer wall of the rear side of the placing table 5, so as to suck and fix the circuit board on the placing table 5, the exhaust component comprises two vacuum pumps 71 symmetrically installed on the outer wall of the rear side of the placing table 5, the vacuum pump 71 is connected to the inside of the placing table 5 through an air suction pipe 72, and an air inlet end of the air suction pipe 72 is connected to a blocking net for blocking waste chips to avoid The waste chips are sucked into the suction pipe 72, causing the suction pipe 72 to be blocked. A collection frame 6 that can be pulled out forward is slidably provided in the placement table 5 to collect the waste chips. A sealing strip 61 is connected to the top of the collection frame 6 to seal the gap between it and the placement table 5. The sealing strip 61 is in the shape of a U-shaped character. The sealing strip 61 seals the gap between the collection frame 6 and the placement table 5, which can prevent outside air from entering the placement table 5 through the gap between the collection frame 6 and the placement table 5, thereby improving the adsorption and fixing effect of the circuit board. A magnet 52 is embedded on the rear side wall of the placement table 5. The magnet 52 is located between two vacuum pumps 71. The collection frame 6 is made of iron. The magnet 52 can absorb and fix the iron collection frame 6 to prevent the collection frame 6 from moving on its own, thereby improving the stability of the collection frame 6. A positioning mechanism is provided on the top of the two electric slide rails 4 to fix the circuit board on the placement table 5. A cooling mechanism is provided on the three-axis movable platform 2 to cool the drilling area of ​​the circuit board.

[0033] See also Figure 4-Figure 7The positioning mechanism includes a group of electric push rods 81 installed on the top of the electric slide rail 4, and the number of each group of electric push rods 81 is three. The three electric push rods 81 in each group are spaced from front to back. The push rod of the electric push rod 81 is slidably provided with an L-shaped clamping block 82 for clamping the circuit board. The clamping part of the clamping block 82 is connected with a rubber block 821. Through the rubber block 821, not only can the friction between the clamping block 82 and the circuit board be increased to improve the stability of clamping the circuit board, but also can prevent the clamping block 82 from hard squeezing the circuit board, so as to provide buffer protection for the circuit board and prevent damage to the circuit board. The push rod of the electric push rod 81 is connected with a connecting block 83, and a spring 84 is connected between the connecting block 83 and the clamping block 82. A pressure block 86 is hinged on the top of the clamping block 82, and the pressure block 86 and the clamping block 8 2, two spring pieces 87 are symmetrically connected front and back, a push block 85 is connected to the push rod of the electric push rod 1 81, which is used to push the pressure block 86 to rotate downward to press the circuit board and fix it on the placement table 5, and a rubber block 2 861 is connected to the bottom of the pressure block 86. The rubber block 2 861 can not only increase the friction between the pressure block 86 and the circuit board to improve the positioning effect of the circuit board, but also prevent the pressure block 86 from hard squeezing the circuit board, so as to provide buffer protection for the circuit board and avoid damage to the circuit board. The bottom of the push block 85 is rotatably connected to a contact wheel 851, which can reduce the friction between the push block 85 and the pressure block 86 to reduce the wear of the push block 85 and the pressure block 86, thereby extending the service life of the push block 85 and the pressure block 86, and a distance sensor 88 is installed on the top of the pressure block 86.

[0034] See also Figure 8-Figure 9 The cooling mechanism includes a micro refrigerator 91 installed on the Z-axis guide rail of the three-axis mobile platform 2, a connecting ring 92 is connected to the outer shell of the drilling machine 3, a telescopic rod 93 is connected to the bottom rear side of the connecting ring 92, a lifting plate 94 is connected to the telescopic rod 93, and an annular cooling plate 95 is connected to the front side of the lifting plate 94. When the drill bit of the drilling machine 3 moves down to drill a hole, it enters the inner side of the annular cooling plate 95. An annular copper tube 97 is connected to the top of the annular cooling plate 95. The annular copper tube 97 is connected to the micro refrigerator 91 through a hose 96. The hose 96 is provided with two left and right hoses for realizing the circulation of the coolant. A spring 98 is connected between the lifting plate 94 and the fixed end of the telescopic rod 93.

[0035] First, place the circuit board on the placement table 5. The positioning plate 50 can be used to position the circuit board to prevent the circuit board from being placed too far backward. Then, the vacuum pump 71 is controlled to work to extract the gas in the placement table 5, so that a negative pressure is formed inside the placement table 5, thereby sucking and fixing the circuit board on the placement table 5. Then, the electric slide rail 4 is controlled to drive the placement table 5 to move the circuit board backward to the bottom of the drilling machine 3. The placement table 5 then moves to the lower side of the clamping block 82, and the circuit board then moves to between the clamping blocks 82 on the left and right sides. Initially, the pressing block 86 tilts upward (see Figure 5), control all the push rods of the electric push rod 1 81 to extend, so as to drive the connecting block 83 and the pushing block 85 to move in the direction close to the circuit board, thereby pushing the clamping block 82 to move in the direction close to the circuit board through the spring 1 84, and the pressing block 86 moves to the upper side of the circuit board. The clamping blocks 82 on the left and right sides approach each other, which can not only push the circuit board to move to the center, but also clamp and fix the circuit board on the placement table 5. After the circuit board is clamped and fixed on the placement table 5 by the clamping blocks 82 on the left and right sides, the clamping block 82 cannot continue to move in the direction close to the circuit board, so the pushing block 85 continues to move in the direction close to the circuit board to squeeze the pressing block 86 to rotate downward, press the circuit board and fix it on the placement table 5, and the spring 87 is deformed accordingly, and the connecting block 83 continues to move in the direction close to the circuit board to compress the spring 1 84. In this way, the device can not only evacuate the placement table 5 through the vacuum pump 71 to achieve the adsorption and fixation of the circuit board, but also clamp the circuit board on the placement table 5 through the clamping block 82, and press the circuit board down and fix it on the placement table 5 through the pressing block 86. It not only realizes the automatic positioning of the circuit board, but also can firmly position the circuit board to avoid displacement and warping of the circuit board during subsequent drilling, thereby improving the drilling accuracy.

[0036] After the circuit board is fixed, the three-axis mobile platform 2 drives the drilling machine 3 to move forward, backward, left, right, up and down in three axes to realize automatic drilling of the circuit board. When the distance sensor 88 detects that the distance from the drilling machine 3 is less than the preset value, the distance sensor 88 sends a signal to the controller (the controller is not shown in the figure, the controller is a prior art and will not be described here). After receiving the signal, the controller controls the push rod of the corresponding electric push rod 81 to retract, so as to drive the connecting block 83 and the pushing block 85 to move away from the circuit board, and the spring 84 is restored to its original state. After the pushing block 85 is separated from the pressing block 86, under the reset action of the spring 87, the pressing block 86 rotates upward and separates from the circuit board. After the spring 84 is restored to its original state, the connecting block 83 pulls the clamping block 82 and the pressing block 86 to move away from the circuit board through the spring 84 to avoid the drill bit of the drilling machine 3 and avoid hindering the drilling operation of the circuit board. When the distance sensor 88 detects that the distance to the drilling machine 3 is greater than a preset value, the distance sensor 88 sends a signal to the controller. After receiving the signal, the controller controls the push rod of the corresponding electric push rod 81 to extend, so that the clamping block 82 re-clamps the circuit board and the pressing block 86 re-presses the circuit board.

[0037] When the drilling machine 3 moves downward, it drives the connecting ring 92, the telescopic rod 93, the lifting plate 94, the annular cooling plate 95, the annular copper tube 97 and the spring 2 98 to move downward. When the annular cooling plate 95 moves downward to contact the circuit board, the annular cooling plate 95 and the lifting plate 94 cannot move downward further, so the connecting ring 92 follows the drilling machine 3 to continue to press down to compress the spring 2 98, and the drill bit of the drilling machine 3 then enters the inner side of the annular cooling plate 95 to drill the circuit board. Before the drilling operation, the micro refrigerator 91 is controlled to work so that the liquid refrigerant circulates in the annular copper tube 97. The micro refrigerator 91 is a prior art and will not be described in detail here. The drilling area of ​​the circuit board is cooled by the annular cooling plate 95. As the liquid refrigerant circulates in the annular copper tube 97, it can take away the heat on the annular cooling plate 95, ensuring that the annular cooling plate 95 continuously and effectively cools the drilling area of ​​the circuit board, avoiding excessive local temperature of the circuit board, reducing the risk of thermal deformation, thereby avoiding warping of the circuit board and improving the overall quality of the circuit board.

[0038] When the drilling machine 3 moves upward, the connecting ring 92 is driven upward, the spring 2 98 returns to its original state, and the subsequent telescopic rod 93 follows the connecting ring 92 and continues to move upward, and the lifting plate 94 is pulled upward with the annular cooling plate 95 through the spring 2 98 to separate from the circuit board. After the drilling operation is completed, all the push rods of the electric push rod 1 81 are controlled to retract, so that the clamping block 82 and the pressure block 86 release the circuit board, and then the electric slide rail 4 is controlled to drive the placement table 5 to drive the circuit board to move forward and reset, so as to facilitate the subsequent placement of the circuit board, and then the vacuum pump 1 71 is controlled to stop working to release the circuit board.

[0039] See also Figure 10-11 The frame 1 is provided with a loading and unloading mechanism, which includes a mounting frame 101 mounted on the front side of the frame 1, a material storage frame 102 for storing circuit boards is connected to the lower part of the mounting frame 101, a linear motor 103 is installed at the lower part of the mounting frame 101, and a push plate 104 is connected to the linear motor 103, which is used to push the circuit boards in the material storage frame 102 backward onto the placement table 5, and the lower parts of the front and rear sides of the material storage frame 102 are provided with openings 105 for the push plate 104 to move, and the height of the opening 105 matches the thickness of the circuit boards, and the upper part of the mounting frame 101 is provided with a An XZ-axis moving platform 106 is provided with a suction cup gripper 107, and the suction cup gripper 107 can be driven to move left and right and up and down by the XZ-axis moving platform 106. The XZ-axis moving platform 106 is a prior art and will not be described in detail herein. A vacuum pump 108 is provided on the X-axis slider of the XZ-axis moving platform 106, and the vacuum pump 108 is connected to the suction cup gripper 107 via a telescopic tube 109. Support plates 12 are connected to the outer walls on both sides of the left and right sides of the frame 1, and a frame 13 for collecting circuit boards is placed on the support plate 12.

[0040] When the placement table 5 drives the processed circuit board thereon to move forward, the XZ-axis moving platform 106 is first controlled to drive the suction cup grabber 107 to move leftward to the upper side of the circuit board, and then the XZ-axis moving platform 106 is controlled to drive the suction cup grabber 107 to move downward to contact the circuit board, and then the vacuum pump 2 108 is controlled to work to extract the air in the suction cup grabber 107, so that the suction cup on the suction cup grabber 107 sucks the circuit board, and then the XZ-axis moving platform 106 is controlled to drive the suction cup grabber 107 to move upward, thereby driving the circuit board to move upward and separate from the placement table 5. Then the XZ-axis moving platform 106 is controlled to drive the suction cup grabber 107 to continue to move leftward, thereby driving the circuit board to move leftward to the top of the left frame 13, and finally the vacuum pump 2 108 is controlled to work to input external air into the suction cup grabber 107, so that the suction cup grabber 107 releases the circuit board, and the circuit board then falls into the left frame 13 for collection. Similarly, when grabbing the next circuit board processed on the placement table 5, the XZ axis moving platform 106 is controlled to drive the suction cup grabber 107 to move rightward, so that the next circuit board can fall into the right frame 13 for collection, thereby realizing automatic unloading of the circuit board. After the processed circuit board falls into the frame 13, the linear motor 103 is controlled to drive the push plate 104 to move back and forth, and the push plate 104 moves backward to push the circuit board at the bottom of the storage frame 102 backward to the placement table 5, thereby realizing automatic loading of the circuit board. When the push plate 104 moves backward and forward, it blocks the circuit board in the storage frame 102 to prevent the circuit board from falling and hindering the movement of the push plate 104. When the push plate 104 moves forward to separate from the circuit board in the storage frame 102, the circuit board falls under the action of its own gravity. In this way, the device can realize automatic loading and unloading of circuit boards, improve the degree of automation, eliminate the need for manual loading and unloading, reduce labor intensity, and improve processing efficiency.

[0041] See also Fig.10 and Fig.12 A cleaning mechanism for cleaning waste on the placement table 5 is provided on the outside of the storage frame 102, and the cleaning mechanism includes two electric push rods 111 respectively hinged on the outer walls of the left and right sides of the storage frame 102, a scraper 112 is connected between the push rods of the two electric push rods 111, a torsion spring 113 is connected between the electric push rod 111 and the storage frame 102, and the torsion spring 113 is connected to the hinged connection between the electric push rod 111 and the storage frame 102.

[0042] After the processed circuit board on the placement table 5 is grabbed by the suction cup grabber 107, the electric push rod 111 is controlled to drive the scraper 112 to move backward to scrape the waste on the placement table 5 backward, so as to automatically clean the placement table 5 and prevent the waste from remaining on the placement table 5 and affecting the drilling of the next circuit board. The torsion spring 113 can ensure that the scraper 112 is always in close contact with the top of the placement table 5 when moving backward, ensuring that the scraper 112 effectively scrapes the waste on the placement table 5. After the waste on the placement table 5 is scraped off, the electric push rod 111 is controlled to drive the scraper 112 to move forward and reset.

[0043] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A drilling device for processing a circuit board that is easy to position, comprising a frame (1), a three-axis movable platform (2) mounted on the frame (1), a drilling machine (3) mounted on the three-axis movable platform (2), characterized in that: Two electric slide rails (4) are symmetrically installed in the frame (1), a placement table (5) for placing a circuit board is connected between the sliders of the two electric slide rails (4), a positioning plate (50) for positioning the circuit board is connected to the top of the placement table (5), air holes (51) are spaced apart at the top of the placement table (5), an exhaust assembly for extracting gas therein is provided outside the placement table (5), a collection frame (6) that can be withdrawn outward is provided inside the placement table (5), and a positioning mechanism for fixing the circuit board on the placement table (5) is provided on the top of the two electric slide rails (4), the positioning mechanism comprising a group of electric push rods (81) installed on the top of the electric slide rails (4), the electric push rods (81) A clamping block (82) for clamping a circuit board is slidably provided on the push rod of the electric push rod (81), a connecting block (83) is connected to the push rod of the electric push rod (81), a spring (84) is connected between the connecting block (83) and the clamping block (82), a pressing block (86) is hinged on the top of the clamping block (82), a spring (87) is connected between the pressing block (86) and the clamping block (82), a push block (85) is connected to the push rod of the electric push rod (81), and is used to push the pressing block (86) to rotate downward to press the circuit board and fix it on the placement table (5), a distance sensor (88) is installed on the top of the pressing block (86), and a cooling mechanism is provided on the three-axis mobile platform (2) for cooling the drilling area of ​​the circuit board.

2. A drilling device for circuit board processing that is easy to position according to claim 1, characterized in that: The cooling mechanism comprises a micro refrigerator (91) mounted on a Z-axis guide rail of a three-axis mobile platform (2); a connecting ring (92) is connected to the outer shell of the drilling machine (3); a telescopic rod (93) is connected to the bottom of the connecting ring (92); a lifting plate (94) is connected to the telescopic rod (93); an annular cooling plate (95) is connected to the lifting plate (94); a drill bit of the drilling machine (3) enters the inner side of the annular cooling plate (95) when the drill bit moves downward to drill a hole; an annular copper tube (97) is connected to the top of the annular cooling plate (95); the annular copper tube (97) is connected to the micro refrigerator (91) via a hose (96); and a second spring (98) is connected between the lifting plate (94) and the fixed end of the telescopic rod (93).

3. A drilling device for circuit board processing that is easy to position according to claim 2, characterized in that: The vacuum pump assembly comprises a vacuum pump 1 (71) installed outside the placement table (5); the vacuum pump 1 (71) is connected to the inside of the placement table (5) via an air suction pipe (72).

4. A drilling device for circuit board processing that is easy to position according to claim 3, characterized in that: A rubber block 1 (821) for buffering and protecting the circuit board is connected to the clamping portion of the clamping block (82), and a rubber block 2 (861) for buffering and protecting the circuit board is connected to the bottom of the pressing block (86).

5. A drilling device for circuit board processing that is easy to position according to claim 4, characterized in that: A loading and unloading mechanism is provided on the frame (1), the loading and unloading mechanism comprising a mounting frame (101) mounted on the frame (1), a material storage frame (102) for storing circuit boards connected to the lower portion of the mounting frame (101), a linear motor (103) installed at the lower portion of the mounting frame (101), a push plate (104) connected to the linear motor (103) for pushing the circuit boards in the material storage frame (102) onto the placement table (5), and both lower portions of the material storage frame (102) are A through hole (105) is provided for the push plate (104) to move, the height of the through hole (105) matches the thickness of the circuit board, an XZ axis moving platform (106) is installed on the upper part of the mounting frame (101), a suction cup grabber (107) is installed on the XZ axis moving platform (106), a vacuum pump 2 (108) is installed on the XZ axis moving platform (106), and the vacuum pump 2 (108) is connected to the suction cup grabber (107) through a telescopic tube (109).

6. A drilling device for circuit board processing that is easy to position according to claim 5, characterized in that: A cleaning mechanism for cleaning waste scraps on the placement table (5) is provided outside the material storage frame (102), the cleaning mechanism comprising two electric push rods (111) respectively hinged on the outer walls of both sides of the material storage frame (102), a scraper (112) is connected between the push rods of the two electric push rods (111), and a torsion spring (113) is connected between the electric push rods (111) and the material storage frame (102).

7. A drilling device for circuit board processing that is easy to position according to claim 6, characterized in that: A contact wheel (851) is provided at the bottom of the push block (85) for reducing the friction between the push block (85) and the pressing block (86).

8. A drilling device for circuit board processing that is easy to position according to claim 7, characterized in that: A sealing strip (61) is connected to the top of the collecting frame (6) and is used to seal the gap between the collecting frame (6) and the placing table (5).

9. A drilling device for circuit board processing that is easy to position according to claim 8, characterized in that: The collecting frame (6) is made of iron, and a magnet (52) for attracting the iron collecting frame (6) is embedded on the side wall of the placing table (5).

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