A circuit board positioning mechanism and laser marking machine

Abstract

The embodiment of the present application provides a circuit board positioning mechanism and a laser marking machine, which relate to the technical field of circuit board marking equipment. The circuit board positioning mechanism includes: a support body part and a circuit board loading and unloading part. The support body part includes a pedestal, an end cover, a first electric push rod, a connecting rod and a first connecting block. The two first connecting blocks are respectively fixed at both ends of the pedestal. The first electric push rod is installed at the bottom of the pedestal, and the output rod end of the first electric push rod is movable through an end cover. A first slide groove is arranged above the pedestal, and the connecting rod is located inside the first slide groove. Compared with the traditional manual positioning and flipping of the circuit board, the positioning mechanism can accurately position the circuit board to move it under the marking head, and adopts mechanical flipping instead of manual flipping of the circuit board, which also has a better protection effect on the corners of the circuit board, and reduces the situation where the corners are damaged by accidental collision when the circuit board is flipped.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board marking equipment, and in particular to a circuit board positioning mechanism and a laser marking machine. Background Art

[0002] Laser marking machines use laser marking technology to mark the surface of circuit boards.

[0003] When some laser marking machines are performing laser marking operations, the operator places the circuit board at the designated position on the operating table of the laser marking machine. When the current circuit board is double-sided marked, the operator needs to manually turn the circuit board placed on the operating table and align it to the position so that the laser marking machine can perform double-sided marking operations. Manually turning and positioning the circuit board is not only slow and inefficient, but also easily causes the corners of the circuit board to bump and cause damage during turning. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a circuit board positioning mechanism and a laser marking machine to solve the problem that during laser marking, manual flipping and positioning of the circuit board is not only slow and inefficient, but also easily causes the corners of the circuit board to collide and be damaged during flipping.

[0005] A circuit board positioning mechanism according to the present application includes: a support body part and a circuit board loading and unloading part.

[0006] The support body comprises a pedestal, an end cover, a first electric push rod, a connecting rod and a first connecting block, two of the first connecting blocks are respectively fixed at two ends of the pedestal, the first electric push rod is installed at the bottom of the pedestal, and the output rod end of the first electric push rod movably passes through one of the end covers, a first slide groove is arranged above the pedestal, the connecting rod is located inside the first slide groove, and one end of the connecting rod movably passes through one of the end covers, and the first connecting block connects one end of the connecting rod and the output rod end of the first electric push rod;

[0007] The circuit board loading and unloading part includes a seat plate, a first support plate, a second support plate, a rotation drive assembly, a vacuum suction cup, a support plate and a first slider. The first slider is slidably arranged inside the first slide groove, and the connecting rod is fixedly connected to the first slider at one end away from the first connecting block. The second support plate is arranged above the first slider, and the seat plate is arranged on one side of the second support plate, and the seat plate is slidably arranged above the pedestal. The rotation drive assembly is installed on the seat plate, and the rotation drive assembly drives the support plate to rotate and adjust. The first support plate is fixedly arranged on the support plate, and the vacuum suction cup is installed on the bottom side inside the first support plate.

[0008] Preferably, the rotation drive assembly includes a second electric push rod, a rack, a shaft, a gear and a side frame plate, the side frame plate is fixed above the seat plate, the second electric push rod is installed above the seat plate, the rack is slidably arranged above the seat plate, and the output rod end of the second electric push rod is connected to one end of the rack, the shaft rotates and passes through the side frame plate, one end of the shaft is fixedly connected to the support plate, the gear is fixedly sleeved on the other end of the shaft, and the rack is meshed with the gear.

[0009] Preferably, a second sliding groove is arranged on the seat plate, a second sliding block is slidably arranged inside the second sliding groove, and the bottom of the rack is fixedly connected to the second sliding block.

[0010] Preferably, a back frame plate is fixed above the seat plate, and the second electric push rod is installed on one side of the back frame plate.

[0011] Preferably, a limiting strip is provided on one side of the seat plate, and the limiting strip supports and limits the support plate.

[0012] The circuit board positioning mechanism also includes a gas pressurizing part, which includes a barrel, a piston, a push-pull rod and a second connecting block. The barrel is fixed on one side of the pedestal, and the piston is movably arranged inside the barrel to divide the barrel into a first cavity and a second cavity. A first air inlet pipe and a first air outlet pipe connected to the first cavity are respectively arranged below and above one end of the barrel, a first one-way valve is arranged outside the first air inlet pipe, and a third one-way valve is arranged outside the first air outlet pipe. A second air inlet pipe and a second air outlet pipe connected to the second cavity are respectively arranged below and above the other end of the barrel, a second one-way valve is arranged outside the second air inlet pipe, and a fourth one-way valve is arranged outside the second air outlet pipe. One end of the push-pull rod is connected to the piston, and the other end of the push-pull rod is movably inserted into the barrel, and two ends of the second connecting block are respectively connected to the second connecting block and the first connecting block.

[0013] The circuit board positioning mechanism also includes a gas storage part, which includes a gas storage tank and a connecting pipe. The gas storage tank is installed on the other side of the base. One end of the two connecting pipes are respectively connected to the two ends of the gas storage tank, the other end of one connecting pipe is connected to the first air outlet pipe, and the other end of the other connecting pipe is connected to the second air outlet pipe.

[0014] Preferably, a first jet pipe is provided on the top of the gas storage tank, a gas outlet port of the first jet pipe is located above the first supporting plate, and a first solenoid valve is provided outside the first jet pipe.

[0015] Preferably, a second jet pipe is provided on the top of the gas storage tank, a gas outlet port of the second jet pipe is located above the second support plate, and a second solenoid valve is provided outside the second jet pipe.

[0016] Preferably, hoop plates are provided on the outside of the cylindrical tank and the gas storage tank, and the hoop plates are fixedly connected to the pedestal.

[0017] The circuit board positioning mechanism also includes a gas pipe connecting part, which includes a rear section pipe, an air supply pipe and a front hose. The bottom end of the rear section pipe is connected to the side of the first air intake pipe, and the bottom end of the rear section pipe is located above the first one-way valve. A pressure relief valve is provided on the outside of the first air intake pipe below the first one-way valve, and a fifth one-way valve is provided on the outside of the rear section pipe. The bottom end of the front hose is connected to the top end of the rear section pipe, and the top end of the front hose is connected to the vacuum suction cup. One end of the air supply pipe is connected to the outside of the rear section pipe located above the fifth one-way valve, and a third solenoid valve is provided on the outside of the air supply pipe.

[0018] The present application also provides a laser marking machine, comprising the circuit board positioning mechanism described above, wherein the circuit board positioning mechanism is installed above an operating table of the laser marking machine.

[0019] The beneficial effects of the present application are as follows: the present application obtains a circuit board positioning mechanism and a laser marking machine through the above-mentioned design, wherein the first pallet is pre-moved to the bottom of the marking head of the laser marking machine, and the marking head can mark the front of the circuit board at this time. The rotating drive assembly flips and drives the support plate and the first pallet to rotate and reset in the opposite direction, and the marking head can complete the marking of the other side of the flipped circuit board inside the second pallet. After the marking of the circuit board is completed, the output rod end of the first electric push rod drives the outside of the first slider through the first connecting block and the connecting rod, that is, drives the second pallet and the first pallet to move outward and reset to prepare for the next placement of the circuit board. Compared with the traditional manual positioning and flipping of the circuit board, the positioning mechanism can accurately position the circuit board to move to the bottom of the marking head, and adopts mechanical flipping instead of manual flipping of the circuit board, which also has a better protection effect on the corners of the circuit board, and reduces the situation where the corners are damaged by accidental collision when the circuit board is flipped.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic diagram of the circuit board positioning mechanism structure according to an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the structure of the support main body and the circuit board loading and unloading parts according to the embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the structure of the loading and unloading part of the circuit board according to the embodiment of the present application;

[0025] Figure 4 It is a schematic diagram of the structure of the side frame plate, the back frame plate and the limiting strip plate according to the embodiment of the present application;

[0026] Figure 5 It is a schematic diagram of the structure of the gas pressurizing part, the gas storage part and the gas pipe connection part according to an embodiment of the present application;

[0027] Figure 6 is a schematic diagram of the structure of the gas pressurizing part according to an embodiment of the present application;

[0028] Figure 7 is a schematic diagram of the structure of the gas storage part according to an embodiment of the present application;

[0029] Figure 8 It is a schematic diagram of the structure of the connection part of the vacuum suction cup, the first air inlet pipe and the gas pipe fitting according to an embodiment of the present application.

[0030] Reference numerals:

[0031] 1. Support body; 11. Base; 12. End cover; 13. First electric push rod; 14. Connecting rod; 15. First connecting block; 16. First slide; 2. Circuit board loading and unloading part; 21. Base plate; 22. First support plate; 23. Second support plate; 231. Second slide; 24. Rotation drive assembly; 241. Second electric push rod; 242. Rack; 243. Shaft; 244. Gear; 245. Second slide; 246. Side frame; 247. Back frame; 25. Vacuum suction cup; 26. Support plate; 27. First slide; 28. Limiting strip; 3. Gas pressurization part; 31. Cylinder; 32. Piston; 33. Push-pull rod; 34. Second connecting block; 35. First air inlet pipe; 351. First non-return valve; 352. Pressure relief valve; 36. Second air inlet pipe; 361. Second non-return valve; 37. First air outlet pipe; 371. Third non-return valve; 38. Second air outlet pipe; 381. Fourth non-return valve; 4. Gas storage part; 41. Gas storage tank; 42. Connecting pipe; 43. First jet pipe; 44. Second jet pipe; 45. First solenoid valve; 46. Second solenoid valve; 47. Hoop plate; 5. Gas pipe connecting part; 51. Rear pipe; 52. Fifth non-return valve; 53. Third solenoid valve; 54. Air supply pipe; 55. Front hose. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0033] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0035] A circuit board positioning mechanism and a laser marking machine according to an embodiment of the present application are described below with reference to the accompanying drawings.

[0036] See also Figure 1-Figure 8 According to an embodiment of the present application, a circuit board positioning mechanism includes: a support main body part 1 and a circuit board loading and unloading part 2.

[0037] Among them, the support main body part 1 cooperates with the circuit board loading and unloading part 2 to load the circuit board to the bottom of the marking head of the laser marking machine. The circuit board loading and unloading part 2 can also turn the circuit board over to the bottom of the marking head, so that the marking machine can automatically mark the front and back of the circuit board. Compared with manual operation, it can ensure the accuracy of placing the circuit board under the marking head, and can also reduce manual touch on the circuit board, reducing damage caused by accidental collision during circuit board marking.

[0038] The support body 1 includes a base 11, an end cover 12, a first electric push rod 13, a connecting rod 14 and a first connecting block 15. Two first connecting blocks 15 are fixed to the two ends of the base 11 by bolts. The first electric push rod 13 is installed at the bottom of the base 11, and the output rod end of the first electric push rod 13 is movably penetrated through an end cover 12. A first slide 16 is arranged above the base 11, and the connecting rod 14 is located inside the first slide 16, and one end of the connecting rod 14 is movably penetrated through an end cover 12, and the first connecting block 15 connects one end of the connecting rod 14 and the output rod end of the first electric push rod 13. The circuit board loading and unloading part 2 includes a base plate 21, a first support plate 22, a second support plate 23, a rotation drive assembly 24, a vacuum suction cup 25, a support plate 26 and a first slider 27. The first slider 27 is slidably arranged inside the first slide 16, and the end of the connecting rod 14 away from the first connecting block 15 is fixedly connected to the first slider 27. The second support plate 23 is fixedly arranged above the first slider 27 by bolts, the seat plate 21 is arranged on one side of the second support plate 23, and the seat plate 21 is slidably arranged above the pedestal 11. The rotation drive assembly 24 is installed on the seat plate 21, and the rotation drive assembly 24 drives the support plate 26 to rotate and adjust, the first support plate 22 is fixedly arranged on the support plate 26 by bolts, and the vacuum suction cup 25 is installed on the bottom side of the first support plate 22.

[0039] The working principle of the circuit board positioning mechanism is as follows: when placing the circuit board, the output rod end of the first electric push rod 13 is in the output extension state, and the first support plate 22 and the second support plate 23 are both located outside the marking head, so that the circuit board to be marked can be placed inside the first support plate 22. At this time, the support plate 26 supports the first support plate 22 in a horizontal position. The output rod of the first electric push rod 13 is recovered, and the first slider 27 is driven to slide inside the first slide groove 16 at the top of the pedestal 11 through the cooperation of the first connecting block 15 and the connecting rod 14, that is, the support plate 26 is driven to move together with the first support plate 22 through the second support plate 23 and the seat plate 21, and the first support plate 22 is moved to the bottom of the marking head of the laser marking machine in advance, and the marking head can mark the front of the circuit board at this time. After the marking head finishes marking the front of the circuit board, the output rod end of the first electric push rod 13 pushes the connecting rod 14 and the first slider 27 to move outward, that is, drives the first support plate 22 to move to the outside of the marking head, and at this time, the second support plate 23 is located below the marking head. The rotating drive assembly 24 drives the support plate 26 to rotate. At this time, the vacuum suction cup 25 has already adsorbed the circuit board. The rotating support plate 26 will drive the circuit board in the first pallet 22 to move and rotate until the first pallet 22 is engaged on the second pallet 23. The vacuum suction cup 25 puts the circuit board inside the first pallet 22 into the second pallet 23. At this time, the circuit board is flipped over. The rotating drive assembly 24 flips and drives the support plate 26 and the first pallet 22 to rotate in the opposite direction and reset. The marking head can complete the marking of the other side of the flipped circuit board inside the second pallet 23. After the marking of the circuit board is completed, the output rod end of the first electric push rod 13 drives the first slider 27 to move outward through the first connecting block 15 and the connecting rod 14, that is, drives the second pallet 23 and the first pallet 22 to move outward and reset to prepare for the next placement of the loading circuit board. Compared with the traditional manual positioning and flipping of circuit boards, this positioning mechanism can accurately position the circuit board and move it under the marking head, and use mechanical flipping instead of manual flipping of the circuit board, which also has a better protection effect on the corners of the circuit board and reduces the damage caused by accidental collision of the corners when the circuit board is flipped.

[0040] In specific configuration, the rotation drive assembly 24 includes a second electric push rod 241, a rack 242, a shaft 243, a gear 244 and a side frame plate 246. The side frame plate 246 is fixed above the seat plate 21 by bolts, and the second electric push rod 241 is installed above the seat plate 21. The rack 242 is slidably arranged above the seat plate 21, and the output rod end of the second electric push rod 241 is connected to one end of the rack 242, the shaft 243 rotates and penetrates the side frame plate 246, one end of the shaft 243 is fixedly connected to the support plate 26 by welding, the gear 244 is fixedly sleeved on the other end of the shaft 243, and the rack 242 is meshed with the gear 244. The second electric push rod 241 in the rotating drive assembly 24 pushes and pulls the rack 242 above the seat plate 21 to move, and the moving rack 242 drives the shaft 243 to rotate by cooperating with the gear 244. The rotating shaft 243 drives the support plate 26 to rotate, that is, drives the first support plate 22 above the support plate 26 to rotate and adjust.

[0041] Furthermore, the seat plate 21 is provided with a second slide groove 231, a second slider 245 is slidably provided inside the second slide groove 231, and the bottom of the rack 242 is fixedly connected to the second slider 245. The second slide groove 231 and the second slider 245 make the rack 242 moving above the seat plate 21 more stable.

[0042] Specifically, a back frame plate 247 is fixed on the seat plate 21 by bolts, and the second electric push rod 241 is installed on one side of the back frame plate 247. The back frame plate 247 is used to assist in supporting the second electric push rod 241. A limit strip plate 28 is provided on one side of the seat plate 21, and the limit strip plate 28 supports the limit support plate 26. The support plate 26 is used to support the first support plate 22 in a horizontal position, and cooperates with the shaft rod 243 to stably support the first support plate 22 in a horizontal position. The rotating shaft rod 243 can drive the support plate 26 and the first support plate 22 to rotate, so that the first support plate 22 covers the second support plate 23.

[0043] The circuit board positioning mechanism also includes a gas pressurizing part 3, which includes a barrel 31, a piston 32, a push-pull rod 33 and a second connecting block 34. The barrel 31 is fixed to one side of the pedestal 11, and the piston 32 is movably arranged inside the barrel 31 to separate the barrel 31 into a first cavity and a second cavity. A first air inlet pipe 35 and a first air outlet pipe 37 connected to the first cavity are respectively arranged below and above one end of the barrel 31, and a first one-way valve 351 is arranged outside the first air inlet pipe 35, and a third one-way valve 371 is arranged outside the first air outlet pipe 37. A second air inlet pipe 36 and a second air outlet pipe 38 connected to the second cavity are respectively arranged below and above the other end of the cylinder 31, a second one-way valve 361 is arranged outside the second air inlet pipe 36, and a fourth one-way valve 381 is arranged outside the second air outlet pipe 38. One end of the push-pull rod 33 is connected to the piston 32, and the other end of the push-pull rod 33 is movable through the cylinder 31. The two ends of the second connecting block 34 are respectively connected to the second connecting block 34 and the first connecting block 15. The circuit board positioning mechanism also includes a gas storage part 4, which includes a gas storage tank 41 and a connecting pipe 42. The gas storage tank 41 is installed on the other side of the pedestal 11. One end of the two connecting pipes 42 is respectively connected to the two ends of the gas storage tank 41, the other end of one connecting pipe 42 is connected to the first air outlet pipe 37, and the other end of the other connecting pipe 42 is connected to the second air outlet pipe 38. A first jet pipe 43 is provided at the top of the gas storage tank 41, the gas outlet of the first jet pipe 43 is located above the first support plate 22, and a first solenoid valve 45 is provided outside the first jet pipe 43. A second jet pipe 44 is provided at the top of the gas storage tank 41, the gas outlet of the second jet pipe 44 is located above the second support plate 23, and a second solenoid valve 46 is provided outside the second jet pipe 44.

[0044] When placing the circuit board for positioning and marking, the output rod end of the first electric push rod 13 pushes the first connecting block 15 and the connecting rod 14 to move back and forth. The moving first connecting block 15 will drive the piston 32 inside the cylinder 31 to move back and forth inside the cylinder 31 through the second connecting block 34 and the push-pull rod 33. When the piston 32 inside the cylinder 31 moves toward the first air inlet pipe 35, the air inside the first cavity is compressed, and the compressed air inside the first cavity enters the air storage tank 41 through the first air outlet pipe 37 and the connecting pipe 42; and the external air enters the second cavity through the second air inlet pipe 36. When the piston 32 inside the cylinder 31 moves toward the second air inlet pipe 36, the air inside the second cavity is compressed, and the compressed air inside the second cavity enters the air tank 41 through the fourth one-way valve 381 and the connecting pipe 42 to be collected; and the external air is replenished into the first cavity through the first air inlet pipe 35, that is, in the operation of positioning the circuit board, the reciprocating piston 32 compresses the air and stores it inside the air tank 41. When the first support plate 22 moves to the bottom of the marking head, the first solenoid valve 45 is opened, and the compressed air inside the air tank 41 is discharged to the upper surface of the circuit board inside the first support plate 22 through the first jet pipe 43, so that the dust and other impurities attached to the upper surface of the circuit board are removed, and the laser marking machine marks the circuit board more clearly. When the circuit board is flipped over to the inside of the second support plate 23, the second solenoid valve 46 is opened, and the compressed air in the gas tank 41 is discharged to the flipped circuit board surface through the second jet pipe 44, so that dust and other impurities attached to the circuit board surface are removed, so as to prevent dust and other impurities from blocking the circuit board marking area, and the laser marking machine marks the circuit board more clearly. The gas pressurizing part 3 and the gas storage part 4 in the circuit board positioning mechanism cooperate with each other to generate compressed gas while positioning and moving, so as to clean dust and other impurities on the surface of the positioned circuit board and improve the clarity of the circuit board marking.

[0045] Furthermore, hoop plates 47 are disposed outside the cylindrical tank 31 and the gas storage tank 41 . The hoop plates 47 are fixedly connected to the pedestal 11 . The hoop plates 47 are disposed to fix the cylindrical tank 31 and the gas storage tank 41 .

[0046] If the above-mentioned circuit board positioning mechanism can absorb air through the gas pressurization part 3 and at the same time can keep the vacuum suction cup 25 in a negative pressure state to adsorb the circuit board, the vacuum suction cup 25 does not need additional pneumatic equipment for adjustment and coordination, which can effectively reduce the cost of the positioning structure.

[0047] The circuit board positioning mechanism also includes a gas pipe connection part 5, which includes a rear section pipe 51, an air supply pipe 54 and a front hose 55. The bottom end of the rear section pipe 51 is connected to the side of the first air inlet pipe 35, and the bottom end of the rear section pipe 51 is located above the first one-way valve 351. A pressure relief valve 352 is provided outside the first air inlet pipe 35 below the first one-way valve 351, and a fifth one-way valve 52 is provided outside the rear section pipe 51. The bottom end of the front hose 55 is connected to the top end of the rear section pipe 51, and the top end of the front hose 55 is connected to the vacuum suction cup 25. One end of the air supply pipe 54 is connected to the outside of the rear section pipe 51 located above the fifth one-way valve 52, and a third solenoid valve 53 is provided outside the air supply pipe 54.

[0048] When the circuit board is initially placed on the first support plate 22, the output rod end of the first electric push rod 13 is in an output extension state. Thereafter, the output rod end of the first electric push rod 13 will drive the first slider 27 to move in the first slide groove 16 through the first connecting block 15 and the connecting rod 14, that is, drive the circuit board on the first support plate 22 to move below the marking head. In the process of the first support plate 22 moving below the marking head, the moving first connecting block 15 will also drive the piston 32 to move inside the barrel 31 through the second connecting block 34 and the push-pull rod 33 to compress the first cavity. At this time, the second cavity becomes larger, and the external air enters the rear section pipe 51 through the front hose 55, and then enters the barrel 31 through the rear section pipe 51 and the first air inlet pipe 35. At this time, the vacuum suction cup 25 will be in a negative pressure state to tightly absorb the circuit board inside the first support plate 22. When the negative pressure in the first cavity inside the cylinder 31 is too large, the external air can break through the pressure relief valve 352 and enter the first air inlet pipe 35, that is, enter the cylinder 31 through the first air inlet pipe 35, while ensuring that the vacuum suction cup 25 has a certain suction force, it is not easy to cause the circuit board or the front hose 55 to be over-extruded and damaged due to excessive pressure. When the rotation drive component 24 drives the first support plate 22 to rotate above the second support plate 23, the third solenoid valve 53 is started, and the external air enters the front hose 55 through the air supply pipe 54, and the pressure in the vacuum suction cup 25 is balanced. The circuit board originally adsorbed by the vacuum suction cup 25 will fall on the second support plate 23 under the action of gravity to complete the flip. The circuit board positioning mechanism is coordinated by the gas pipe connection part 5, and does not require the vacuum suction cup 25 to cooperate with additional pneumatic equipment. The gas suction of the gas pressurization part 3 creates a negative pressure state while the vacuum suction cup 25 adsorbs the circuit board, which can effectively save the cost of the overall positioning structure.

[0049] The present application also provides a laser marking machine, including the circuit board positioning mechanism described above. The circuit board positioning mechanism can be fixedly installed above the operating table of the laser marking machine by bolts, and adapted to the marking head of the laser marking machine for marking operations.

[0050] It should be noted that the specific models and specifications of the first electric push rod 13, the second electric push rod 241, the first solenoid valve 45, the second solenoid valve 46, and the third solenoid valve 53 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail. The power supply and principle of the first electric push rod 13, the second electric push rod 241, the first solenoid valve 45, the second solenoid valve 46, and the third solenoid valve 53 are clear to those skilled in the art and will not be described in detail here.

[0051] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0052] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A circuit board positioning mechanism, characterized in that: include: A support body part (1), the support body part (1) comprising a base (11), an end cover (12), a first electric push rod (13), a connecting rod (14) and a first connecting block (15), two first connecting blocks (15) being fixed to two ends of the base (11) respectively, the first electric push rod (13) being mounted at the bottom of the base (11), and an output rod end of the first electric push rod (13) being movably inserted through one of the end covers (12), a first slide groove (16) being arranged above the base (11), the connecting rod (14) being located inside the first slide groove (16), and one end of the connecting rod (14) being movably inserted through one of the end covers (12), and the first connecting block (15) connecting one end of the connecting rod (14) and an output rod end of the first electric push rod (13); A circuit board loading and unloading part (2), the circuit board loading and unloading part (2) comprising a base plate (21), a first support plate (22), a second support plate (23), a rotation drive assembly (24), a vacuum suction cup (25), a support plate (26) and a first slider (27), the first slider (27) being slidably arranged inside the first slide groove (16), the end of the connecting rod (14) away from the first connecting block (15) being fixedly connected to the first slider (27), the second support plate (23) being arranged above the first slider (27), the base plate (21) being arranged on one side of the second support plate (23), and the base plate (21) being slidably arranged above the pedestal (11), the rotation drive assembly (24) being mounted on the base plate (21), and the rotation drive assembly (24) driving the support plate (26) to rotate and adjust, the first support plate (22) being fixedly arranged on the support plate (26), and the vacuum suction cup (25) being mounted on the bottom side inside the first support plate (22); A gas pressurizing part (3), the gas pressurizing part (3) comprising a cylinder (31), a piston (32), a push-pull rod (33) and a second connecting block (34), the cylinder (31) being fixed to one side of the pedestal (11), the piston (32) being movably arranged inside the cylinder (31) to separate the cylinder (31) into a first cavity and a second cavity, a first air inlet pipe (35) and a first air outlet pipe (37) being arranged below and above one end of the cylinder (31) and communicating with the first cavity, respectively, a first one-way valve (351) being arranged outside the first air inlet pipe (35), and a first one-way valve (351) being arranged outside the first air outlet pipe (37). A third one-way valve (371) is provided at the bottom and top of the other end of the barrel (31), respectively, and the second air inlet pipe (36) and the second air outlet pipe (38) are connected to the second cavity. A second one-way valve (361) is provided outside the second air inlet pipe (36), and a fourth one-way valve (381) is provided outside the second air outlet pipe (38). One end of the push-pull rod (33) is connected to the piston (32), and the other end of the push-pull rod (33) is movably inserted into the barrel (31). Two ends of the second connecting block (34) are respectively connected to the push-pull rod (33) and the first connecting block (15); The gas pipe connecting part (5) comprises a rear pipe (51), an air supply pipe (54) and a front hose (55), wherein the bottom end of the rear pipe (51) is connected to the side of the first air inlet pipe (35), and the top end of the front hose (55) is connected to the vacuum suction cup (25).

2. A circuit board positioning mechanism according to claim 1, characterized in that: The rotation drive assembly (24) comprises a second electric push rod (241), a rack (242), a shaft (243), a gear (244) and a side frame plate (246); the side frame plate (246) is fixed above the seat plate (21); the second electric push rod (241) is installed above the seat plate (21); the rack (242) is slidably arranged above the seat plate (21); the output rod end of the second electric push rod (241) is connected to one end of the rack (242); the shaft (243) rotates and passes through the side frame plate (246); one end of the shaft (243) is fixedly connected to the support plate (26); the gear (244) is fixedly sleeved on the other end of the shaft (243); and the rack (242) and the gear (244) are meshed.

3. A circuit board positioning mechanism according to claim 2, characterized in that: The seat plate (21) is provided with a second sliding groove (231), a second sliding block (245) is slidably provided inside the second sliding groove (231), and the bottom of the rack (242) is fixedly connected to the second sliding block (245).

4. A circuit board positioning mechanism according to claim 2, characterized in that: A back frame plate (247) is fixed above the seat plate (21), and the second electric push rod (241) is mounted on one side of the back frame plate (247).

5. A circuit board positioning mechanism according to claim 1, characterized in that: A limiting strip plate (28) is provided on one side of the seat plate (21), and the limiting strip plate (28) supports and limits the support plate (26).

6. A circuit board positioning mechanism according to claim 1, characterized in that: It also includes a gas storage part (4), the gas storage part (4) including a gas storage tank (41) and a connecting pipe (42), the gas storage tank (41) is installed on the other side of the pedestal (11), one end of the two connecting pipes (42) are respectively connected to the two ends of the gas storage tank (41), the other end of one connecting pipe (42) is connected to the first gas outlet pipe (37), and the other end of the other connecting pipe (42) is connected to the second gas outlet pipe (38).

7. A circuit board positioning mechanism according to claim 6, characterized in that: The top of the gas storage tank (41) is connected to a first jet pipe (43), the gas outlet port of the first jet pipe (43) is located above the first support plate (22), and a first solenoid valve (45) is provided outside the first jet pipe (43); the top of the gas storage tank (41) is connected to a second jet pipe (44), the gas outlet port of the second jet pipe (44) is located above the second support plate (23), and a second solenoid valve (46) is provided outside the second jet pipe (44).

8. A circuit board positioning mechanism according to claim 6, characterized in that: The cylindrical tank (31) and the gas storage tank (41) are both provided with hoop plates (47) on the outside, and the hoop plates (47) are fixedly connected to the pedestal (11).

9. A laser marking machine, comprising a circuit board positioning mechanism as claimed in any one of claims 1 to 8, characterized in that: The circuit board positioning mechanism is installed above the operating table of the laser marking machine.

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