A wear-free punching device for PCB board production

Abstract

The present invention discloses a wear-free punching device for PCB board production, comprising a platform, a water tank fixedly mounted on the upper surface of the placement plate, the water tank being filled with cooling water, a water accumulation tank fixedly mounted on the surface of the placement plate, and a water guide track fixedly mounted on the surface of the water accumulation tank; a connecting rod fixedly mounted on the back of the placement plate, a mounting ring fixedly mounted on one end of the connecting rod, a first hollow rod with a closed end vertically fixedly mounted inside the mounting ring, a piston rod slidably inserted into the first hollow rod, the first hollow rod being connected to the water tank and the water accumulation tank via a first water inlet pipe and a first water outlet pipe, respectively, and the piston rod being provided with a driving force for vertical reciprocating movement via a drive assembly. The present invention does not require an additional electric drive system for supplying cooling water, thereby improving practicality while reducing the cost of PCB board punching processing.

Description

Technical Field

[0001] The present invention relates to the field of punching technology, and in particular to a wear-free punching device for PCB board production. Background Art

[0002] PCBs are important components in the electronics industry. During production, they require multiple mounting holes to be punched on their surfaces. Existing punching devices typically consist of a drive motor and a drill bit. To prevent excessive heat and wear at the contact area between the drill bit and the PCB during the drilling process, cooling water is often sprayed during the drilling process to reduce temperature and prevent wear.

[0003] The spraying of cooling water during the drilling process usually requires an additional electric drive system to control it, and it is unable to automatically supply or stop the water supply, which has poor practicality and leads to high working costs for PCB board drilling processing. Summary of the Invention

[0004] The purpose of the present invention is to address the following shortcomings in the prior art: the spraying of cooling water during the punching process usually requires an additional electric drive system to control, and the water supply cannot be automatically supplied or stopped, which has poor practicality and leads to high working costs for PCB board punching processing. A wear-free punching device for PCB board production is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A wear-free punching device for PCB board production includes a platform, an L-shaped placement plate fixedly mounted on the upper surface of the platform, a lifting cylinder fixedly mounted on the lower surface of the placement plate, a drive motor fixedly mounted on the bottom end of the drive shaft of the lifting cylinder, and a drill bit fixedly mounted on the bottom end of the output shaft of the drive motor; a water storage tank fixedly mounted on the upper surface of the placement plate, the water storage tank filled with cooling water; a water storage tank fixedly mounted on the surface of the placement plate, and an L-shaped water guide track fixedly mounted on the surface of the water storage tank;

[0007] A connecting rod is fixedly installed on the back of the placement plate, and a mounting ring is fixedly installed on one end of the connecting rod. A first hollow rod with a closed end is vertically fixedly installed in the mounting ring, and a piston rod is slidably inserted in the first hollow rod. The first hollow rod is connected to the water tank and the water accumulation tank through a first water inlet pipe and a first water outlet pipe respectively. A first one-way valve is provided in the first water inlet pipe and the first water outlet pipe. The piston rod provides driving force for reciprocating movement in the vertical direction through a driving assembly.

[0008] As a preferred solution, the drive assembly includes a reciprocating screw, a slide seat threadedly sleeved on the reciprocating screw, a rotating rod, two gears and a rack chain wound and meshed with the two gears, the piston rod is fixedly connected to the slide seat, the mounting plate and the side walls of the table body are fixedly installed with a fixed plate, the reciprocating screw and the rotating rod are respectively vertically rotatably mounted on the two fixed plates, and a slot is vertically opened at one end close to each other, and a plug rod is slidably inserted in the two slots, the two gears are respectively fixedly sleeved on the plug rod and the output shaft of the driving motor, a disc is fixedly sleeved on the plug rod, and a mounting rod is fixedly installed on the housing of the driving motor, and a mounting port is opened at one end of the mounting rod, and the disc is slidably configured in the mounting port, and the cross-sections of the plug rod and the slot are the same, and neither is circular.

[0009] As a preferred solution, a collection box is fixedly installed on the upper surface of the platform, the water storage box is located above the collection box, and a water outlet is vertically opened at the bottom.

[0010] As a preferred solution, a second hollow rod with a closed end is fixedly installed on the back of the placement plate through a locking assembly, and the bottom end of the piston rod is slidably inserted in the second hollow rod. The second hollow rod is connected to the collection box and the water storage tank through the second water inlet pipe and the second water outlet pipe respectively. A second one-way valve is provided in the second water inlet pipe and the second water outlet pipe, and a second telescopic spring is vertically provided in the second hollow rod. The two ends of the second telescopic spring are respectively connected to the bottom end of the piston rod and the bottom wall of the second hollow rod.

[0011] As a preferred solution, the locking assembly includes two mounting plates and two first spring rods fixedly mounted on the surfaces of the two mounting plates respectively; the surfaces of the mounting plates are symmetrically and horizontally provided with sliding openings connected to the collection box; the two mounting plates are horizontally slidably arranged in the two sliding openings respectively and are connected to the collection box through connecting parts; the side walls at the bottom ends of the second hollow rods are symmetrically provided with locking grooves for inserting the ends of the two first spring rods respectively; the bottom of the second hollow rod is symmetrically and inclinedly provided with a slide plate.

[0012] As a preferred solution, the connecting component includes a fixed block, a sliding rod and a first telescopic spring mounted on the sliding rod. A trapezoidal plug-in plate is fixedly mounted on the surface of one end of the mounting plate located inside the collection box. Sockets are provided on the left and right side walls of the collection box. The two plug-ins are respectively slidably and sealedly inserted into the two sockets. The two fixed blocks are respectively fixedly mounted on the surfaces of the two plug-ins located outside the collection box. A through-hole is provided on the surface of the fixed block. The two sliding rods are respectively slidably inserted into the two through-holes. The two ends of the first telescopic spring are respectively fixedly connected to the collection box and the fixed block.

[0013] As a preferred solution, a placement rod is vertically fixedly installed in the collection box, and a floating plate with a density lower than that of cooling water is slidably sleeved on the placement rod. Two trapezoidal pressure plates are vertically fixedly installed on the lower surface of the floating plate. An inclined plate is fixedly installed on the upper surface of one end of the installation plate located in the collection box, and the inclined surfaces of the two inclined plates are respectively arranged face to face with the inclined surfaces of the two pressure plates, and the two plug plates are respectively locked by two sets of positioning components.

[0014] As a preferred solution, the positioning component includes a rectangular plate fixedly mounted on the surface of the placement plate and a second spring rod vertically fixedly mounted on the lower surface of the rectangular plate. A positioning groove for inserting the bottom end of the second spring rod is vertically opened on the upper surface of the insert plate, and the inclined surfaces of the two insert plates are respectively arranged face to face with the surfaces at the bottom ends of the two second spring rods.

[0015] As a preferred solution, a U-shaped connecting rod is symmetrically fixedly installed on the upper surface of the floating plate, a touch plate is fixedly installed on the end of the connecting rod away from the floating plate, and a force-bearing plate is fixedly sleeved on the second spring rod. The two touch plates are respectively located below the two force-bearing plates, and the upper surfaces are respectively arranged face to face with the lower surfaces of the two force-bearing plates.

[0016] As a preferred solution, sealing grooves are horizontally opened on the left and right walls of the sliding opening, sealing plates are fixedly installed on the left and right side walls of the mounting plate, and multiple sealing plates are respectively slidably and sealedly inserted into multiple sealing grooves.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the drive motor drives the drill bit at high speed, cooling water in the water tank is intermittently pumped into the first hollow rod and applied to the drill bit along the water guide track, thereby cooling the contact area between the drill bit and the PCB board to prevent wear. The supply of cooling water does not require an additional electric drive system, which improves practicality and reduces the cost of PCB board drilling.

[0019] 2. With the cooperation between the water storage tank, the collection box and the water outlet, when the drill bit is working for a short time, the heat generated is small. At this time, the cooling water sucked into the first hollow rod will not act on the drill bit, but will be collected by the collection box. Only when the drill bit is working for a long time, that is, when the heat generated is large, will the cooling water act on the drill bit, thus avoiding the waste of cooling water resources.

[0020] 3. The cooling water collected by the collection box will be intermittently sucked into the second hollow rod when the drill bit rotates, and then transported to the water storage tank, so as to achieve the effect of recycling, which is convenient and fast;

[0021] 4. When the cooling water in the collection box is less, the piston rod will not perform piston movement in the second hollow rod, but will move with the second hollow rod. Only when the cooling water in the collection box reaches a certain amount, that is, the water level is higher, will the piston rod perform piston movement in the second hollow rod, thereby recycling the cooling water in the collection box, avoiding the piston rod from performing piston movement in the second hollow rod all the time, which would cause more serious wear on the sliding contact part between the piston rod and the second hollow rod, thereby improving the service life of the piston rod and the second hollow rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front three-dimensional structure of a wear-free punching device for PCB board production proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the back three-dimensional structure of a wear-free punching device for PCB board production proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of a partial three-dimensional cross-sectional structure of a wear-free punching device for PCB board production proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of a water storage tank in a wear-free punching device for PCB board production proposed by the present invention;

[0026] Figure 5 for Figure 1 A in the middle is an enlarged structural diagram;

[0027] Figure 6 for Figure 2 The enlarged structural diagram at B in the middle;

[0028] Figure 7 for Figure 2 The enlarged structural diagram at C in the middle;

[0029] Figure 8 for Figure 3 The enlarged structural diagram at D in the middle;

[0030] Figure 9 for Figure 3 The enlarged structural diagram at E in the middle;

[0031] Figure 10 for Figure 3 Enlarged structural diagram at F in the middle.

[0032] In the figure: 1 body, 2 placement plate, 3 lifting cylinder, 4 drive motor, 5 drill bit, 6 water tank, 7 first hollow rod, 8 piston rod, 9 first water inlet pipe, 10 first water outlet pipe, 11 water tank, 12 water guide track, 13 reciprocating screw, 14 rotating rod, 15 gear, 16 rack chain, 17 plug rod, 18 disc, 19 mounting rod, 20 collecting box, 21 water outlet, 22 second hollow rod, 23 second water inlet pipe, 24 second water outlet pipe, 25 mounting plate, 26 first spring rod, 27 sliding mouth, 28 plug plate, 29 sliding rod, 30 first telescopic spring, 31 locking groove, 32 second telescopic spring, 33 floating plate, 34 pressing plate, 35 inclined plate, 36 second spring rod, 37 positioning groove, 38 connecting rod, 39 touch plate, 40 force plate, 41 sealing plate, 42 slide plate, 43 slide seat. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figures 1-10 A wear-free punching device for PCB board production includes a platform 1, an L-shaped placement plate 2 is fixedly mounted on the upper surface of the platform 1, a lifting cylinder 3 is fixedly mounted on the lower surface of the placement plate 2, a driving motor 4 is fixedly mounted on the bottom end of the driving shaft of the lifting cylinder 3, and a drill bit 5 is fixedly mounted on the bottom end of the output shaft of the driving motor 4. A water storage tank 6 is fixedly mounted on the upper surface of the placement plate 2, and the water storage tank 6 is filled with cooling water. A water storage tank 11 is fixedly mounted on the surface of the placement plate 2, and an L-shaped water guide track 12 is fixedly mounted on the surface of the water storage tank 11;

[0035] A connecting rod is fixedly installed on the back of the placement plate 2, and a mounting ring is fixedly installed on one end of the connecting rod. A first hollow rod 7 with a closed end is vertically fixedly installed in the mounting ring. A piston rod 8 is slidably inserted in the first hollow rod 7. The first hollow rod 7 is connected to the water tank 6 and the water storage tank 11 through a first water inlet pipe 9 and a first water outlet pipe 10 respectively. A first one-way valve is provided in the first water inlet pipe 9 and the first water outlet pipe 10. The conducting direction of the first one-way valve in the first water inlet pipe 9 is from the water storage tank 6 to the first hollow rod 7, and the conducting direction of the first one-way valve in the first water outlet pipe 10 is from the first hollow rod 7 to the water storage tank 11. The piston rod 8 provides a driving force for reciprocating movement in the vertical direction through a driving assembly;

[0036] The driving assembly includes a reciprocating screw 13, a slide 43 threadedly sleeved on the reciprocating screw 13, a rotating rod 14, two gears 15 and a rack chain 16 wound and meshed with the two gears 15, the piston rod 8 is fixedly connected to the slide 43, the mounting plate 2 and the side wall of the platform 1 are fixedly mounted with fixed plates, the reciprocating screw 13 and the rotating rod 14 are respectively vertically rotatably mounted on the two fixed plates, and a slot is vertically opened at one end close to each other, and a plug rod 17 is slidably inserted into the two slots, the two gears 15 are respectively fixedly sleeved on the plug rod 17 and the output shaft of the driving motor 4, a disc 18 is fixedly sleeved on the plug rod 17, and a mounting rod 19 is fixedly mounted on the housing of the driving motor 4, and a mounting port is opened at one end of the mounting rod 19, and the disc 18 is slidably configured in the mounting port. The cross-sections of the plug rod 17 and the slot are the same and are not circular;

[0037] When the lifting cylinder 3 controls the driving motor 4 and the drill bit 5 to move downward, the insertion rod 17 will also move with the drill bit 5. Then, when the drill bit 5 moves to a suitable position, the driving motor 4 is started. When the driving motor 4 rotates with the drill bit 5, the insertion rod 17 will rotate with the rotating rod 14 and the reciprocating screw 13 under the transmission action of the two gears 15 and the rack chain 16. At this time, the slide 43 threadedly connected to the reciprocating screw 13 will drive the piston rod 8 to reciprocate in the vertical direction. During the movement, the volume inside the first hollow rod 7 will continue to change. When the volume inside the first hollow rod 7 increases, the pressure decreases, and the cooling water in the water tank 6 enters the first hollow rod 7 from the first water inlet pipe 9. Then, when the volume inside the first hollow rod 7 decreases, the pressure increases, and the cooling water in the first hollow rod 7 enters the water storage tank 11 from the first water outlet pipe 10, and then flows down along the wall of the water guide track 12 and acts on the drill bit 5, thereby cooling the contact part between the drill bit 5 and the PCB board to avoid wear. The supply of cooling water does not require an additional electric drive system, which improves practicality while reducing the cost of drilling processing.

[0038] A collection box 20 is fixedly mounted on the upper surface of the platform 1, the water storage box 11 is located above the collection box 20, and a water inlet 21 is vertically opened at the bottom;

[0039] The cooling water flowing out of the first water outlet pipe 10 will enter the water storage tank 11. If the drill bit 5 has been working for a short time, the heat generated is small, and the cooling water sucked into the water storage tank 11 is also small. Since the water level in the water storage tank 11 has not yet reached the water guide port of the water guide track 12, the cooling water will not flow out along the water guide track 12 and will not act on the drill bit 5. Instead, the cooling water will slowly flow into the collection box 20 from the water outlet 21 and be collected by the collection box 20.

[0040] Only when the drill bit 5 is working for a long time, that is, when it generates more heat, more cooling water is sucked into the water storage tank 11. Since the speed of the cooling water sucked into the water storage tank 11 is faster than the speed of the cooling water flowing out of the water opening 21, the level of the cooling water in the water storage tank 11 will gradually rise as the cooling water is sucked. When it reaches the water opening of the water guide track 12, the cooling water will enter the water guide track 12 and flow downstream to act on the drill bit 5.

[0041] That is, cooling water will only act on the drill bit 5 when the drill bit 5 works for a long time and generates more heat. When the drill bit 5 works for a short time and generates less heat, the cooling water will not act on the drill bit 5, but will be collected to avoid waste of cooling water resources.

[0042] A second hollow rod 22 with a closed end is fixedly installed on the back of the placement plate 2 through a locking assembly. The bottom end of the piston rod 8 is slidably inserted in the second hollow rod 22. The second hollow rod 22 is connected to the collection box 20 and the water storage tank 6 through a second water inlet pipe 23 and a second water outlet pipe 24 respectively. A second one-way valve is provided in the second water inlet pipe 23 and the second water outlet pipe 24. The conducting direction of the second one-way valve in the second water inlet pipe 23 is from the collection box 20 to the second hollow rod 22, and the conducting direction of the second one-way valve in the second water outlet pipe 24 is from the second hollow rod 22 to the water storage tank 6. A second telescopic spring 32 is vertically provided in the second hollow rod 22, and the two ends of the second telescopic spring 32 are respectively connected to the bottom end of the piston rod 8 and the inner bottom wall of the second hollow rod 22;

[0043] When the driving motor 4 rotates with the drill bit 5, the piston rod 8 will reciprocate in the vertical direction. During the movement, the volume inside the second hollow rod 22 will continue to change. When the volume inside the second hollow rod 22 becomes larger, the pressure decreases, and the cooling water in the collection box 20 will enter the second hollow rod 22 from the second water inlet pipe 23. When the volume inside the second hollow rod 22 becomes smaller, the pressure increases, and the cooling water in the second hollow rod 22 will flow back to the water storage tank 6 from the second water outlet pipe 24, thereby achieving the effect of recycling and utilization, which is convenient and quick.

[0044] The locking assembly includes two mounting plates 25 and two first spring rods 26 respectively fixedly mounted on the surfaces of the two mounting plates 25. The surface of the placement plate 2 is symmetrically and horizontally provided with sliding openings 27 connected to the collection box 20. The two mounting plates 25 are respectively slidably arranged in the two sliding openings 27 and are connected to the collection box 20 through connecting components. The side walls at the bottom ends of the second hollow rods 22 are symmetrically provided with locking grooves 31 for inserting the ends of the two first spring rods 26 respectively. The bottom of the second hollow rod 22 is symmetrically and obliquely provided with slides 42. The left and right walls in the sliding openings 27 are both horizontally provided with sealing grooves. The left and right side walls of the mounting plate 25 are both fixedly installed with sealing plates 41. Multiple sealing plates 41 are respectively slidably and sealedly inserted in multiple sealing grooves. The sealing plates 41 can prevent the cooling water in the collection box 20 from flowing out of the sliding openings 27.

[0045] The connecting components include a fixed block, a slide rod 29 and a first telescopic spring 30 sleeved on the slide rod 29. A trapezoidal plug plate 28 is fixedly installed on the surface of one end of the mounting plate 25 located inside the collection box 20. Sockets are provided on the left and right side walls of the collection box 20. The two plug plates 28 are respectively slidably and sealedly inserted into the two sockets. The two fixed blocks are respectively fixedly mounted on the surfaces of the two plug plates 28 located outside the collection box 20. A through-hole is provided on the surface of the fixed block. The two slide rods 29 are respectively slidably inserted into the two through-holes. The two ends of the first telescopic spring 30 are respectively fixedly connected to the collection box 20 and the fixed block.

[0046] A placement rod is vertically fixedly installed in the collection box 20, and a floating plate 33 with a density less than that of cooling water is slidably sleeved on the placement rod. Two trapezoidal pressure plates 34 are vertically fixedly installed on the lower surface of the floating plate 33. An inclined plate 35 is fixedly installed on the upper surface of one end of the mounting plate 25 located in the collection box 20. The inclined surfaces of the two inclined plates 35 are respectively arranged face to face with the inclined surfaces of the two pressure plates 34. The two inserting plates 28 are respectively locked by two groups of positioning components. The positioning components include a rectangular plate fixedly installed on the surface of the placement plate 2 and a second spring rod 36 vertically fixedly installed on the lower surface of the rectangular plate. A positioning groove 37 for inserting the bottom end of the second spring rod 36 is vertically opened on the upper surface of the inserting plate 28. The inclined surfaces of the two inserting plates 28 are respectively arranged face to face with the surfaces at the bottom ends of the two second spring rods 36;

[0047] A U-shaped connecting rod 38 is symmetrically fixedly mounted on the upper surface of the floating plate 33. A touch plate 39 is fixedly mounted on the end of the connecting rod 38 away from the floating plate 33. A force-bearing plate 40 is fixedly sleeved on the second spring rod 36. The two touch plates 39 are respectively located below the two force-bearing plates 40, and their upper surfaces are respectively arranged face to face with the lower surfaces of the two force-bearing plates 40.

[0048] The inner walls of the openings of the first hollow rod 7 and the second hollow rod 22 are fixedly bonded with rubber rings, and the surfaces of the piston rod 8 are in sliding sealing contact with the rubber rings;

[0049] As the piston rod 8 reciprocates, the cooling water in the collection box 20 will gradually decrease, and the level of the cooling water will gradually drop, and the floating plate 33 will move down together. When the cooling water in the collection box 20 is less, the inclined surfaces of the two pressing plates 34 on the lower surface of the floating plate 33 will slide in contact with the inclined surfaces of the two inclined plates 35 respectively, and then, under the action of the inclined surfaces, the two inserting plates 28 will move away from each other in the horizontal direction, so that the ends of the two first spring rods 26 will gradually move out of the two locking grooves 31. In this process, the inclined surface of the inserting plate 28 will also slide in contact with the surface at the bottom end of the second spring rod 36, and the second spring rod 36 will be inserted The pressing force of the plate 28 will shrink until the insert plate 28 moves to the position where the positioning groove 37 corresponds to the bottom end of the second spring rod 36. The pressing force exerted by the insert plate 28 on the second spring rod 36 disappears, and the end of the second spring rod 36 will quickly insert into the positioning groove 37, thereby completing the locking of the two insert plates 28 and the two mounting plates 25. At this time, the ends of the two first spring rods 26 will also move out of the two locking grooves 31, thereby releasing the lock of the second hollow rod 22. At this time, when the piston rod 8 reciprocates in the vertical direction, it will reciprocate with the second hollow rod 22, and its end will not perform piston movement in the second hollow rod 22.

[0050] As the amount of cooling water entering the collecting box 20 increases, the horizontal surface will rise together, and the floating plate 33 will also move upward, so that the two connecting rods 38 will also move upward with the two touch plates 39, and the distance between the two touch plates 39 and the two force-bearing plates 40 will gradually decrease until the two touch plates 39 are respectively against the two force-bearing plates 40. At this time, the horizontal surface of the cooling water in the collecting box 20 is already higher, and as the floating plate 33 moves upward, the two force-bearing plates 40 will also move upward together due to the upward push of the two touch plates 39, and then the two second spring rods 36 will contract at this time, and their bottom ends will be moved out of the two positioning grooves 37 respectively. At this time, the two plug plates 28 will quickly move closer to each other in the horizontal direction under the elastic potential energy of the first telescopic spring 30 and reset, so that the two mounting plates 25 and the two first The spring rod 26 will also be reset together. At this time, when the piston rod 8 moves down with the second hollow rod 22, the ends of the two first spring rods 26 will respectively slide in contact with the surfaces of the two slide plates 42 and shrink under the action of the inclined surface pressure until the second hollow rod 22 moves to the two locking grooves 31 and corresponds to the end positions of the two first spring rods 26. At this time, the pressing force applied to the ends of the first spring rods 26 disappears, and the ends of the two first spring rods 26 will respectively insert into the two locking grooves 31, thereby completing the locking of the second hollow rod 22 again. At this time, when the piston rod 8 reciprocates in the vertical direction, it does not move with the second hollow rod 22, but its end performs piston movement in the second hollow rod 22, thereby sucking the cooling water in the collection box 20.

[0051] That is, when there is less cooling water in the collection box 20, the piston rod 8 will not perform piston movement in the second hollow rod 22, but will move with the second hollow rod 22. Only when the cooling water in the collection box 20 reaches a certain amount, that is, the horizontal plane is higher, the piston rod 8 will perform piston movement in the second hollow rod 22, thereby recycling the cooling water in the collection box 20, avoiding the piston rod 8 from always performing piston movement in the second hollow rod 22, which will cause the rubber ring in the second hollow rod 22 that is in sliding contact with the piston rod 8 to be severely worn and deformed, thereby improving the service life of the rubber ring in the second hollow rod 22.

[0052] In the present invention, when the driving motor 4 drives the drill bit 5 to rotate at high speed, the cooling water in the water tank 6 will be intermittently sucked into the first hollow rod 7 by the first water inlet pipe 9, and then enter the water storage tank 11 from the first water outlet pipe 10, and then flow down along the track wall of the water guide track 12 and act on the drill bit 5, thereby cooling the contact part between the drill bit 5 and the PCB board to avoid wear. When the drill bit 5 stops rotating, the suction of cooling water will also stop. The supply of cooling water does not require an additional electric drive system, which improves practicality while reducing the cost of PCB board punching processing.

[0053] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A wear-free punching device for PCB board production, comprising a platform (1), characterized in that: An L-shaped placement plate (2) is fixedly mounted on the upper surface of the platform (1), a lifting cylinder (3) is fixedly mounted on the lower surface of the placement plate (2), a driving motor (4) is fixedly mounted on the bottom end of the driving shaft of the lifting cylinder (3), a drill bit (5) is fixedly mounted on the bottom end of the output shaft of the driving motor (4), a water storage tank (6) is fixedly mounted on the upper surface of the placement plate (2), the water storage tank (6) is filled with cooling water, a water storage tank (11) is fixedly mounted on the surface of the placement plate (2), and an L-shaped water guide track (12) is fixedly mounted on the surface of the water storage tank (11); A connecting rod is fixedly mounted on the back of the placement plate (2), a mounting ring is fixedly mounted on one end of the connecting rod, a first hollow rod (7) with a closed end is vertically fixedly mounted in the mounting ring, a piston rod (8) is slidably inserted in the first hollow rod (7), the first hollow rod (7) is connected to the water storage tank (6) and the water storage tank (11) through a first water inlet pipe (9) and a first water outlet pipe (10), respectively, a first one-way valve is provided in each of the first water inlet pipe (9) and the first water outlet pipe (10), and the piston rod (8) provides a driving force for reciprocating movement in the vertical direction through a driving assembly; The driving assembly comprises a reciprocating screw (13), a slide (43) threadedly sleeved on the reciprocating screw (13), a rotating rod (14), two gears (15) and a rack chain (16) wound and meshed with the two gears (15), and the piston rod (8) is fixedly connected to the slide (43); A second hollow rod (22) with a closed end is fixedly mounted on the back of the placement plate (2) through a locking assembly, and the bottom end of the piston rod (8) is slidably inserted into the second hollow rod (22). The second hollow rod (22) is connected to the collection box (20) and the water storage tank (6) through a second water inlet pipe (23) and a second water outlet pipe (24), respectively. A second one-way valve is provided in each of the second water inlet pipe (23) and the second water outlet pipe (24), and a second telescopic spring (32) is vertically provided in the second hollow rod (22); The locking assembly comprises two mounting plates (25) and two first spring rods (26) respectively fixedly mounted on the surfaces of the two mounting plates (25); a sliding opening (27) communicating with the collection box (20) is symmetrically opened horizontally on the surface of the placement plate (2); the two mounting plates (25) are respectively slidably arranged in the two sliding openings (27) and connected to the collection box (20) through a connecting component; a locking groove (31) for inserting the ends of the two first spring rods (26) is symmetrically opened on the side wall at the bottom end of the second hollow rod (22); A placement rod is vertically fixedly installed in the collection box (20), and a floating plate (33) with a density less than that of cooling water is slidably sleeved on the placement rod. Two trapezoidal pressure plates (34) are vertically fixedly installed on the lower surface of the floating plate (33). A trapezoidal plug plate (28) is fixedly installed on the surface of one end of the installation plate (25) located in the collection box (20). The two plug plates (28) are locked by two sets of positioning components respectively. The positioning components include a rectangular plate fixedly installed on the surface of the placement plate (2) and a second spring rod (36) vertically fixedly installed on the lower surface of the rectangular plate. A positioning groove (37) for inserting the bottom end of the second spring rod (36) is vertically opened on the upper surface of the plug plate (28); The left and right walls of the sliding opening (27) are both horizontally provided with sealing grooves, and the left and right side walls of the mounting plate (25) are both fixedly provided with sealing plates (41), and a plurality of the sealing plates (41) are respectively inserted into the plurality of sealing grooves in a sliding and sealing manner.

2. A wear-free punching device for PCB production according to claim 1, characterized in that: The side walls of the placement plate (2) and the table body (1) are fixedly mounted with fixed plates, the reciprocating screw rod (13) and the rotating rod (14) are respectively mounted on the two fixed plates in a vertical rotation manner, and a slot is vertically opened at one end close to each other, and an insertion rod (17) is slidably inserted into the two slots, the two gears (15) are respectively fixedly sleeved on the insertion rod (17) and the output shaft of the drive motor (4), a disc (18) is fixedly sleeved on the insertion rod (17), and a mounting rod (19) is fixedly mounted on the housing of the drive motor (4), one end of the mounting rod (19) is opened with a mounting opening, and the disc (18) is slidably arranged in the mounting opening, and the cross-sections of the insertion rod (17) and the slot are the same and are not circular.

3. A wear-free punching device for PCB production according to claim 2, characterized in that: A collection box (20) is fixedly mounted on the upper surface of the platform (1); the water storage box (11) is located above the collection box (20) and has a water outlet (21) vertically opened at the bottom.

4. A wear-free punching device for PCB production according to claim 3, characterized in that: The two ends of the second telescopic spring (32) are respectively connected to the bottom end of the piston rod (8) and the inner bottom wall of the second hollow rod (22).

5. A wear-free punching device for PCB production according to claim 4, characterized in that: A slide plate (42) is symmetrically and obliquely provided at the bottom of the second hollow rod (22).

6. The wear-free punching device for PCB production according to claim 5, characterized in that: The connecting component includes a fixed block, a sliding rod (29) and a first telescopic spring (30) sleeved on the sliding rod (29); the left and right side walls of the collection box (20) are provided with sockets; the two plug plates (28) are respectively slidably and sealedly inserted into the two sockets; the two fixed blocks are respectively fixedly mounted on one end surface of the two plug plates (28) outside the collection box (20); a through hole is provided on the surface of the fixed block; the two sliding rods (29) are respectively slidably inserted into the two through holes; the two ends of the first telescopic spring (30) are respectively fixedly connected to the collection box (20) and the fixed block.

7. A wear-free punching device for PCB production according to claim 6, characterized in that: An inclined plate (35) is fixedly mounted on the upper surface of one end of the mounting plate (25) located in the collecting box (20), and the inclined surfaces of the two inclined plates (35) are respectively arranged face to face with the inclined surfaces of the two pressing plates (34).

8. The wear-free punching device for PCB production according to claim 7, characterized in that: The inclined surfaces of the two inserting plates (28) are respectively arranged face to face with the bottom end surfaces of the two second spring rods (36).

9. The wear-free punching device for PCB production according to claim 8, characterized in that: A U-shaped connecting rod (38) is symmetrically fixedly installed on the upper surface of the floating plate (33), a touch plate (39) is fixedly installed on one end of the connecting rod (38) away from the floating plate (33), and a force-bearing plate (40) is fixedly sleeved on the second spring rod (36). The two touch plates (39) are respectively located below the two force-bearing plates (40), and the upper surfaces are respectively arranged face to face with the lower surfaces of the two force-bearing plates (40).

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