A device for cutting pins of a PCB circuit board after components are welded

Abstract

The present invention belongs to the technical field of circuit board production and processing, and discloses a device for cutting pins of a PCB circuit board after component welding, comprising a support frame, wherein the two ends of the top of the support frame are respectively fixed with a positioning clamping assembly, and the top of the support frame is fixed with an air supply assembly, and the air supply assembly inputs gas into the positioning clamping assembly through the support frame. The present invention performs elastic clamping through elastic pads and movable plates distributed up and down, and cooperates with the sealing effect of the negative pressure hole to form a negative pressure environment in the negative pressure hole, and adsorbs and fixes the edges of the PCB board on both sides, realizing the effect of a force that stretches outward on both sides of the PCB board, thereby avoiding the bending deformation of the PCB board caused by the clamping force of the squeezing effect on both sides when the pin is actually cut off, maintaining stable cutting while keeping the horizontal stability of the PCB board, reducing the stress concentrated in the middle, and effectively preventing the abnormal cutting of the pin caused by complete deformation, with good actual use effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of circuit board production and processing, and in particular relates to a device for cutting pins of a PCB circuit board after components are welded. Background Art

[0002] The PCB circuit board pin removal device after component soldering is a device specially used to automatically or manually remove excess pins after electronic components are soldered to the PCB (printed circuit board). It is designed to improve production efficiency, reduce manual operations, and ensure the accuracy and consistency of pin removal.

[0003] In the prior art, a device for cutting pins of a PCB circuit board after soldering components is used. During use, for a PCB circuit board that needs to be cut, the PCB circuit board usually needs to be fixed and the pins cut from the bottom. This requires the PCB circuit board to be suspended and fixed. However, the current positioning and fixing method adopts a two-side clamping method. Although it has a certain clamping stability, in order to ensure the clamping stability, the clamping force is often too large, resulting in stress concentration in the middle of the PCB circuit board after the two sides are compressed. As a result, the middle of the PCB circuit board is bent and deformed, resulting in deviation during the bottom cutting. On the one hand, not all pins can be effectively cut off, and on the other hand, the bottom of the PCB circuit board is subjected to collision and wear, resulting in poor actual use effect.

[0004] In addition, in the prior art, the pin cutting device for PCB circuit boards after component welding, during the cutting process, a large number of pins are cut off and ejected in all directions, which causes the ejected pins to scatter and often need to be collected and processed after the cutting process. Although protective treatment is currently adopted to ensure that the ejected cut pins are concentrated in a certain area, manual or special cleaning and collection steps are still required to actively collect and process the concentrated pins, and the cutting operation often needs to be stopped during the collection process. For batch PCB circuit boards that are continuously cut, the actual cleaning and collection operations are cumbersome and the recycling effect is poor. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for cutting off the pins of a PCB circuit board after component welding, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for cutting pins of a PCB circuit board after component welding, comprising a support frame, positioning and clamping assemblies fixedly provided at both ends of the top of the support frame, a gas supply assembly fixedly provided on the top of the support frame, the gas supply assembly inputting gas into the positioning and clamping assembly through the support frame, a connecting assembly fixedly provided on the outside of the support frame, a distributing guide seat fixedly provided inside the support frame, an air outlet end of the connecting assembly communicating with the positioning and clamping assembly, an air inlet end of the connecting assembly communicating with the distributing guide seat, a movable frame slidingly provided on the top of the distributing guide seat, a rotating portion fixedly provided on the top of the movable frame, a cutting assembly fixedly connected to the output end of the rotating portion, an automatic reversing assembly provided inside the distributing guide seat, a vacuum pump provided at one end of the distributing guide seat, the vacuum pump sucking air toward the connecting assembly and the top of the distributing guide seat respectively through the automatic reversing assembly, a transverse adjustment portion provided on the top of the distributing guide seat, the transverse adjustment portion controlling the reciprocating transverse movement of the movable frame, and side frames fixedly provided at both ends of the support frame;

[0007] The automatic reversing component comprises a movable block, a magnetic column, a second spring, a sealing sleeve, a side opening and a through hole.

[0008] The cam is connected to the support frame by the spring, and the cam is connected with the support frame by the spring.

[0009] Preferably, the connecting component includes a No. 1 pipe, a connecting frame and a No. 2 pipe, one end of the No. 1 pipe is fixedly connected to the top of the connecting frame, the other end of the No. 1 pipe is fixedly connected to the outer side of the positioning frame and is connected to the middle cavity, the connecting frame is fixedly connected to the outer side of the support frame, one end of the No. 2 pipe is fixed and connected to the connecting frame, and the other end is fixed to the side of the distribution guide seat.

[0010] Preferably, the distributing guide seat includes a fixed seat, a suction chamber, air duct No. 1, air duct No. 2, a suction pipe, an assembly chamber, a side hole and a sleeve groove, the fixed seat is fixedly connected to the interior of the support frame, the suction chamber is opened in the interior of the fixed seat, and the interior is filled with a filter layer, the suction pipe is fixedly connected on both sides of the fixed seat and is connected with the suction chamber, the air duct No. 1 and the air duct No. 2 are both opened in the interior of the fixed seat, the air duct No. 1 and the air duct No. 2 are symmetrically distributed on both sides of the assembly chamber, the two ends of the air duct No. 1 are respectively connected with the assembly chamber and the suction chamber, the two ends of the air duct No. 2 are respectively connected with the assembly chamber and the suction end of the vacuum pump, the side holes are opened on both sides of the fixed seat and are connected with the No. 2 pipe, the sleeve groove is opened at the bottom of the fixed seat and is connected with the assembly chamber, the air duct No. 1, the air duct No. 2 and the side hole are all located in the same horizontal plane.

[0011] Preferably, a connecting air channel is opened inside the support frame, the upper end of the connecting air channel is connected to the air vent, the air supply component includes a bottom frame and an air pump, the air pump is fixed in the bottom frame, and the air outlet end of the air pump is connected to the connecting air channel.

[0012] Preferably, the movable frame includes a movable seat and a magnetic plate, the movable seat is slidably sleeved on the top of the fixed seat, the magnetic plate is fixed on the bottom of the movable seat, the rotating part is fixed on the top of the movable seat, the rotating part includes a bracket and a motor, and the output shaft of the motor is fixedly connected to the cutting assembly.

[0013] Preferably, the cutting assembly includes a connecting sleeve and a cutting knife, the connecting sleeve is fixedly connected to the output shaft of the motor, and the cutting knife is threadedly sleeved on the top of the connecting sleeve through a bottom threaded rod.

[0014] Preferably, the lateral adjustment part includes a screw and a control motor, the control motor drives the screw to rotate forward and reverse, and the movable seat is threadedly connected to the screw, and a collection component is provided inside the support frame, and the collection component includes inclined plate 1 and inclined plate 2, the inclined upper end of the inclined plate 1 is fixed to the side of the fixed seat, and the inclined lower end is fixed to the support frame, the inclined upper end of the inclined plate 2 is fixed on the inner wall of the support frame, and the inclined lower end is fixed to the inside of the support frame and fixedly connected to the inclined plate 1.

[0015] Preferably, the movable block is movably sleeved in the assembly cavity, the magnetic column is fixedly connected to the top of the movable block, one end of the spring 2 is fixed to the top of the movable block, and the other end is fixed to the top of the inner cavity of the assembly cavity, the sealing sleeve is fixedly connected to the bottom of the movable block, and movably sleeved in the sleeve groove, the side port is opened on the front of the movable block and faces the No. 2 airway, the through hole is opened on the side of the movable block, and is located on both sides of the side port and is connected to the side port, the side hole is located on the moving path of the through hole, and the No. 2 airway is located on the moving path of the side port.

[0016] Preferably, self-cleaning components are fixed on both sides of the rotating part, and the self-cleaning components include a connecting plate, an inclined rod and a push plate. The push plate is movably sleeved inside the collecting component, and the connecting plate is fixed on the two side brackets of the rotating part. The two ends of the inclined rod are fixedly connected to the push plate and the connecting plate respectively.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention utilizes the positioning and clamping components on both sides of the top of the support frame, cooperates with the connecting component to be connected with the distributed guide seat, and cooperates with the vacuum suction effect of the vacuum pump. When sucking gas into the connecting component, the internal gas of the positioning and clamping components is sucked, and the PCB board inserted into the positioning groove is guided. From the edges of both sides, elastic pads and movable plates distributed up and down are elastically clamped, and the sealing effect of the negative pressure hole is cooperated to form a negative pressure environment in the negative pressure hole, and the edges of both sides of the PCB board are adsorbed and fixed, and the PCB board is stretched outward on both sides. Therefore, when the pin is actually cut, the clamping force of the squeezing action on both sides is avoided to cause the PCB board to bend and deform, and stable cutting is maintained while keeping the horizontal stability of the PCB board, reducing the stress concentrated in the middle, effectively preventing the pin cutting abnormality caused by complete deformation, and having good actual use effect.

[0019] 2. The present invention utilizes the self-cleaning components added on both sides of the rotating part and the collecting components in the supporting frame. After the cutting is completed, as the movable frame moves and resets, during the horizontal reset process, the push plate pushes the cut pins collected between the inclined plate 1 and the inclined plate 2, and the cut pins are uniformly pushed outward for cleaning. The actual cleaning operation is simple and convenient, and the scattered pins after cutting are quickly discharged in a centralized manner, which is convenient for the recycling of cut waste. The operation is simple and fast.

[0020] 3. The present invention reuses the vacuuming effect of the vacuum pump and cooperates with the automatic reversing component in the distributing guide seat. After completing the cutting process, by replacing the cutting knife and the grinding disc, and cooperating with the magnetic reversing action of the automatic reversing component, the vacuum pump is cooperated to achieve adsorption and fixation before moving the grinding, and the vacuum suction direction is quickly switched when the movable frame moves. The distributing guide seat is used to achieve air suction from under the PCB board, thereby quickly completing the grinding process at the cut pin. At the same time, the grinding dust is sucked in during grinding without introducing external cleaning equipment, thereby achieving automatic dust reduction during the grinding process. The actual use effect is good, reducing the operation procedures such as cleaning and dust reduction, maintaining stable and safe cutting processing, and improving the cutting efficiency, with good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection between the positioning clamping component and the communication component of the present invention;

[0024] Figure 4 is a schematic cross-sectional view of a positioning and clamping assembly of the present invention;

[0025] Figure 5 is a schematic cross-sectional view of a positioning frame of the present invention;

[0026] Figure 6 is a schematic diagram of the gas supply assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the installation of the movable frame and the distributed guide seat of the present invention;

[0028] Figure 8 It is a cross-sectional schematic diagram of the distributed guide seat and the automatic reversing assembly of the present invention;

[0029] Figure 9 It is a cross-sectional schematic diagram of the distributed guide seat of the present invention;

[0030] Figure 10 It is a schematic diagram of the connection between the movable frame and the rotating part of the present invention;

[0031] Figure 11 is a schematic diagram of the self-cleaning component of the present invention;

[0032] Figure 12 is a schematic diagram of the collection assembly of the present invention;

[0033] Figure 13 is a schematic diagram of the automatic reversing assembly of the present invention;

[0034] Figure 14 An exploded schematic diagram of the cutting assembly of the present invention;

[0035] Figure 15 is a schematic cross-sectional view of the support frame of the present invention;

[0036] Figure 16 Schematic diagram of a grinding disc in a second embodiment of the present invention.

[0037] In the figure: 1. Support frame; 2. Positioning clamping assembly; 21. Positioning frame; 22. Positioning groove; 23. Inner groove; 24. Movable plate; 25. Elastic pad; 26. Spring 1; 27. Negative pressure hole; 28. Vent; 29. ​​Intermediate cavity; 210. Connecting groove; 3. Connecting assembly; 31. No. 1 pipe; 32. Connecting frame; 33. No. 2 pipe; 4. Distributing guide seat; 41. Fixed seat; 42. Suction chamber; 43. No. 1 airway; 44. No. 2 airway; 45. Suction pipe; 46. Assembly chamber; 47. Side hole; 48. Socket groove; 5. Movable frame; 51. Movable Seat; 52, magnetic plate; 6, rotating part; 7, cutting assembly; 71, connecting sleeve; 72, cutting knife; 8, side frame; 9, automatic reversing assembly; 91, movable block; 92, magnetic column; 93, spring 2; 94, sealing sleeve; 95, side port; 96, through hole; 10, air supply assembly; 101, bottom frame; 102, air pump; 11, vacuum pump; 12, transverse adjustment part; 13, self-cleaning assembly; 131, connecting plate; 132, inclined rod; 133, push plate; 14, collecting assembly; 141, inclined plate 1; 142, inclined plate 2; 15, connecting air duct. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figures 1 to 15 As shown, an embodiment of the present invention provides a device for cutting pins of a PCB circuit board after component welding, comprising a support frame 1, wherein positioning and clamping assemblies 2 are fixedly provided at both ends of the top of the support frame 1, an air supply assembly 10 is fixedly provided on the top of the support frame 1, and the air supply assembly 10 inputs gas into the positioning and clamping assembly 2 through the support frame 1, a connecting assembly 3 is fixedly provided on the outside of the support frame 1, and a distributing guide seat 4 is fixedly provided on the inside of the support frame 1, an air outlet end of the connecting assembly 3 is connected to the positioning and clamping assembly 2, and an air inlet end of the connecting assembly 3 is connected to the distributing guide seat 4, A movable frame 5 is slidably provided on the top of the distributing guide seat 4, a rotating part 6 is fixedly provided on the top of the movable frame 5, and a cutting component 7 is fixedly connected to the output end of the rotating part 6. An automatic reversing component 9 is provided inside the distributing guide seat 4, and a vacuum pump 11 is provided at one end of the distributing guide seat 4. The vacuum pump 11 sucks air toward the connecting component 3 and the top of the distributing guide seat 4 respectively through the automatic reversing component 9. A transverse adjustment part 12 is provided on the top of the distributing guide seat 4. The transverse adjustment part 12 controls the reciprocating transverse movement of the movable frame 5. Side frames 8 are fixedly provided at both ends of the support frame 1;

[0040] The automatic reversing assembly 9 includes a movable block 91 , a magnetic column 92 , a second spring 93 , a sealing sleeve 94 , a side opening 95 and a through hole 96 .

[0041] Example 1: When in use, an external robotic arm is used to clamp the PCB board and insert it between the two sets of positioning and clamping components 2. It is inserted into the positioning groove 22 in the positioning and clamping components 2 at a preset height. Then the air supply component 10 is started, and the air pump 102 inputs the pressurized air into the vent 28 at the bottom of the positioning frame 21 through the connecting air channel 15 in the support frame 1, and inputs it into each inner groove 23 through the connecting groove 210. The pressurized air fills the inner groove 23 and pushes the movable plate 24 to move. As the movable plate 24 moves, the spring 2 is stretched. 6 is stretched, and the elastic pad 25 moves with the movable plate 24, and is clamped up and down along the ends of both sides of the PCB board. Then the vacuum pump 11 is started to keep the movable frame 5 in the initial position. At this time, the magnetic plate 52 is located above the magnetic column 92. The movable block 91 moves down under the repulsion of the same poles and covers the No. 1 airway 43. At this time, the side port 95 moves down and is connected to the No. 2 airway 44. The No. 2 airway 44 is connected to the through hole 96 through the side port 95. At this time, the through hole 96 is aligned with the side hole 47 and is connected. The vacuum pump 11 is connected through the No. 2 airway 44 and the side port 95. The opening 95, through hole 96 and side hole 47 draw air into the connecting component 3, thereby drawing air into the intermediate cavity 29 in the positioning frame 21. While the PCB board is sealed and positioned and the negative pressure hole 27 of the sealing column is sealed, the air pressure inside the intermediate cavity 29 is reduced. The negative pressure holes 27 on both sides of the PCB board are fixed between the positioning and clamping components 2 by the negative pressure adsorption force, completing the positioning and clamping. Subsequently, the lateral adjustment part 12 is started, causing the screw to rotate and drive the movable frame 5 to move laterally. The movable block 91 in the automatic reversing component 9 automatically resets and seals the connecting component 3. Maintain negative pressure adsorption and fixation, and at the same time start the rotating part 6, drive the cutting component 7 to rotate, the cutting knife 72 rotates and moves horizontally, and cuts the pins along the bottom of the positioned PCB board to complete the cutting process; and the cut pin fragments are ejected to both sides and fall after the collision, and slide along the inclined plate 1 141 and the inclined plate 2 142 in the collecting component 14 and fall into the bottom groove, and then the movable frame 5 moves horizontally in the opposite direction to reset, driving the self-cleaning component 13 to push along the collecting component 14, and automatically push out the accumulated pin fragments to complete the self-cleaning.

[0042] First, by utilizing the positioning and clamping components 2 on both sides of the top of the support frame 1, cooperating with the connecting component 3 to connect with the distributed guide seat 4, and cooperating with the vacuum suction effect of the vacuum pump 11, when sucking gas into the connecting component 3, the internal gas of the positioning and clamping component 2 is sucked, and the PCB board inserted into the positioning groove 22 is guided. From the edges of both sides, elastic clamping is performed through the elastic pads 25 and the movable plate 24 distributed up and down, and the sealing effect of the negative pressure hole 27 is cooperated to form a negative pressure environment in the negative pressure hole 27, and the edges of both sides of the PCB board are adsorbed and fixed, and the PCB board is stretched outward on both sides. Therefore, when the pin is actually cut off, the clamping force of the squeezing action on both sides is avoided to cause the PCB board to bend and deform. While maintaining stable cutting, the horizontal stability of the PCB board is maintained, the stress concentrated in the middle is reduced, and the abnormal pin cutting caused by complete deformation is effectively prevented, and the actual use effect is good.

[0043] In addition, by utilizing the self-cleaning components 13 added on both sides of the rotating part 6 and the collecting components 14 in the support frame 1, after the cutting is completed, as the movable frame 5 moves and resets, during the horizontal reset process, the push plate 133 pushes the cut pins collected between the inclined plate 141 and the inclined plate 2 142, and the cut pins are uniformly pushed outward for cleaning. The actual cleaning operation is simple and convenient, and the scattered pins after cutting are quickly discharged in a centralized manner, which is convenient for the recycling of cut waste, and the operation is simple and fast.

[0044] Example 2: When the cutting is completed and the pin is automatically pushed out as the movable frame 5 moves back to its original position, the cutting knife 72 is spirally removed from the connecting sleeve 71 and replaced. Figure 16 The grinding disc structure in the grinding disc is adapted and installed with the threaded rod at the bottom of the grinding disc and the connecting sleeve 71. The vacuum pump 11 is started again to first adsorb and fix the PCB board, and the rotating part 6 is started to drive the grinding disc to rotate, and the movable frame 5 is moved forward again, and the bottom of the cut pin is polished. When the movable frame 5 is moved away and the magnetic plate 52 and the magnetic column 92 are staggered, the movable block 91 is elastically pulled by the spring 2 93 and resets and moves upward. The side opening 95 moves upward and staggers with the No. 2 air channel 44. At the same time, the sealing sleeve 94 moves upward and resets to block and seal the side hole 47, and the No. 1 air channel 43 is directly connected to the No. 2 air channel 44 through the assembly chamber 46. The vacuum pump 11 directly sucks the air in the suction chamber 42 through the No. 2 air channel 44, the assembly chamber 46 and the No. 1 air channel 43, so that the suction pipes 45 on both sides suck and process the dust generated by grinding upward, completing the automatic dust removal in the grinding stage.

[0045] First, by reusing the vacuuming effect of the vacuum pump 11 and cooperating with the automatic reversing component 9 in the distributing guide seat 4, after completing the cutting process, by replacing the cutting knife 72 and the grinding disc, cooperating with the magnetic reversing action of the automatic reversing component 9, the vacuum pump 11 is cooperated to achieve adsorption and fixation before moving the grinding, and the vacuum suction direction is quickly switched when the movable frame 5 moves, and the distributing guide seat 4 is cooperated to realize air suction from the bottom of the PCB board, so as to quickly complete the grinding process of the cut-off pins, and at the same time as grinding, without introducing external cleaning equipment, the grinding dust is sucked in to realize automatic dust reduction during the grinding process, and the actual use effect is good, reducing the cleaning and dust reduction operations, maintaining stable and safe cutting processing, and improving the cutting efficiency, with good use effect.

[0046] Among them, the positioning clamping assembly 2 includes a positioning frame 21, a positioning groove 22, an inner groove 23, a movable plate 24, an elastic pad 25, a spring 26, a negative pressure hole 27, a vent 28, an intermediate cavity 29 and a communicating groove 210. The positioning frame 21 is fixedly connected to the top of the support frame 1. The positioning groove 22 is symmetrically opened on the front of the positioning frame 21 and passes through the front end of the positioning frame 21. The inner groove 23 is opened inside the positioning frame 21. The inner groove 23 is located on the outside of the positioning groove 22 and is connected to the positioning groove 22. The movable plate 24 is movably sleeved inside the inner groove 23. One end of the spring 26 It is fixed inside the inner groove 23 and the other end is fixedly connected to the movable plate 24. The elastic pad 25 is fixedly connected to the side of the movable plate 24 and close to the side of the positioning groove 22. The negative pressure hole 27 and the intermediate cavity 29 are both opened inside the positioning frame 21. One end of the negative pressure hole 27 is connected to the intermediate cavity 29, and the other end is connected to the intermediate cavity 29. The vent 28 is opened at the bottom of the positioning frame 21 and is connected to the inner groove 23 located below. The connecting groove 210 is opened in the positioning frame 21, and the two inner grooves 23 located at the front of the positioning frame 21 are connected to each other through the connecting groove 210.

[0047] The edge positioning and fixation of the PCB board is achieved by utilizing the positioning and clamping component 2, and the negative pressure hole 27 cooperates with the middle cavity 29 to achieve negative pressure adsorption fixation. The elasticity of the spring 26 facilitates the resetting of the movable plate 24, and the elastic pad 25 is driven by the movable plate 24 to assist in clamping and fixing the upper and lower surfaces of the adsorbed and fixed plate, thereby comprehensively achieving safe and reliable anti-deformation fixation, and cooperating with the air supply effect of the air supply component 10 to achieve auxiliary clamping and fixation of the upper and lower surfaces.

[0048] Among them, the connecting component 3 includes a No. 1 pipe 31, a connecting frame 32 and a No. 2 pipe 33. One end of the No. 1 pipe 31 is fixedly connected to the top of the connecting frame 32, and the other end of the No. 1 pipe 31 is fixedly connected to the outer side surface of the positioning frame 21 and is connected to the middle cavity 29. The connecting frame 32 is fixedly connected to the outer side surface of the support frame 1. One end of the No. 2 pipe 33 is fixed and connected to the connecting frame 32, and the other end is fixed to the side of the distributing guide seat 4.

[0049] The connecting component 3 realizes the suction channel, thereby realizing the suction process of the intermediate cavity 29 in the positioning and clamping component 2.

[0050] Among them, the distributing guide seat 4 includes a fixed seat 41, a suction chamber 42, a No. 1 airway 43, a No. 2 airway 44, a suction pipe 45, an assembly chamber 46, a side hole 47 and a sleeve groove 48. The fixed seat 41 is fixedly connected to the inside of the support frame 1, the suction chamber 42 is opened inside the fixed seat 41, and the interior is filled with a filter layer. The suction pipe 45 is fixedly connected to both sides of the fixed seat 41 and is connected to the suction chamber 42. The No. 1 airway 43 and the No. 2 airway 44 are both opened inside the fixed seat 41. The No. 1 airway 43 and the No. 2 airway 44 are both opened inside the fixed seat 41. The air duct 43 and the second air duct 44 are symmetrically distributed on both sides of the assembly chamber 46. The two ends of the No. 1 air duct 43 are respectively connected to the assembly chamber 46 and the suction chamber 42. The two ends of the No. 2 air duct 44 are respectively connected to the assembly chamber 46 and the suction end of the vacuum pump 11. The side holes 47 are opened on both sides of the fixed seat 41 and are connected to the No. 2 pipe 33. The sleeve groove 48 is opened at the bottom of the fixed seat 41 and is connected to the assembly chamber 46. The No. 1 air duct 43, the No. 2 air duct 44 and the side holes 47 are all located in the same horizontal plane.

[0051] The distributing guide seat 4 is used to guide the lateral movement of the movable frame 5, and cooperates with the position of the No. 1 air channel 43, the No. 2 air channel 44 and the side hole 47, and cooperates with the automatic reversing component 9 to move up and down in the assembly chamber 46 to realize the automatic switching of the suction direction, and when the vacuum pump 11 is connected with the No. 1 air channel 43, it cooperates with the suction chamber 42 and the suction pipe 45 to realize dust removal and adsorption, and when the vacuum pump 11 is connected with the side hole 47, the suction processing of the connecting component 3 is realized.

[0052] Among them, a connecting air duct 15 is opened inside the support frame 1, the upper end of the connecting air duct 15 is connected to the vent 28, and the air supply component 10 includes a bottom frame 101 and an air pump 102. The air pump 102 is fixed in the bottom frame 101, and the air outlet end of the air pump 102 is connected to the connecting air duct 15.

[0053] The communicating air passage 15 is used to cooperate with the air supply assembly 10 to ventilate the interior of the inner tank 23 , and utilizes pressure control to control the movement of the movable plate 24 to achieve elastic auxiliary clamping and fixing.

[0054] Among them, the movable frame 5 includes a movable seat 51 and a magnetic plate 52. The movable seat 51 is slidably sleeved on the top of the fixed seat 41. The magnetic plate 52 is fixed on the bottom of the movable seat 51. The rotating part 6 is fixed on the top of the movable seat 51. The rotating part 6 includes a bracket and a motor. The output shaft of the motor is fixedly connected to the cutting assembly 7.

[0055] By utilizing the movable frame 5 in conjunction with the transverse adjustment part 12 to achieve stable transverse reciprocating motion, the cutting, cleaning and grinding actions are completed. When the magnetic plate 52 is in the initial position, it utilizes the repulsive force with the magnetic column 92 to realize the action of the automatic reversing component 9, and cooperates with the elasticity of the spring 2 93 to actuate when the magnetic plate 52 is moved away, thereby realizing the action switching of unused positions.

[0056] The cutting assembly 7 includes a connecting sleeve 71 and a cutting knife 72 . The connecting sleeve 71 is fixedly connected to the output shaft of the motor, and the cutting knife 72 is threadedly sleeved on the top of the connecting sleeve 71 through a bottom threaded rod.

[0057] The cutting assembly 7 is detachable and can be adjusted in height when it is rotated. The cutting operation is performed when the cutting knife 72 is installed, and the grinding process is performed when the grinding disc is replaced.

[0058] Among them, the transverse movement adjustment part 12 includes a screw and a control motor, the control motor drives the screw to rotate forward and reverse, and the movable seat 51 is threadedly connected to the screw, and a collection component 14 is provided inside the support frame 1. The collection component 14 includes an inclined plate 141 and an inclined plate 2 142. The inclined upper end of the inclined plate 141 is fixed on the side of the fixed seat 41, and the inclined lower end is fixed in the support frame 1. The inclined upper end of the inclined plate 2 142 is fixed on the inner wall of the support frame 1, and the inclined lower end is fixed inside the support frame 1 and fixedly connected to the inclined plate 1 141.

[0059] By utilizing the lateral movement adjustment portion 12 to drive the lateral movement control of the movable frame 5, the collection assembly 14 realizes the centralized collection of the cut pins, which fall uniformly into an inclined groove, and cooperates with the movement of the push plate 133 to achieve directional cleaning.

[0060] Among them, the movable block 91 is movably sleeved in the assembly cavity 46, the magnetic column 92 is fixedly connected to the top of the movable block 91, one end of the spring 2 93 is fixed to the top of the movable block 91, and the other end is fixed to the top of the inner cavity of the assembly cavity 46, the sealing sleeve 94 is fixedly connected to the bottom of the movable block 91, and is movably sleeved in the sleeve groove 48, the side opening 95 is opened on the front of the movable block 91 and faces the No. 2 airway 44, the through hole 96 is opened on the side of the movable block 91, and is located on both sides of the side opening 95 and is connected to the side opening 95, the side hole 47 is located on the moving path of the through hole 96, and the No. 2 airway 44 is located on the moving path of the side opening 95.

[0061] When the side port 95 moves downward, it is connected with the No. 2 air channel 44, and cooperates with the side port 95 to be connected with the side hole 47, guiding the suction control of the connecting component 3. When the movable block 91 moves upward, the side port 95 is staggered with the No. 2 air channel 44, and the sealing sleeve 94 seals the side hole 47, so that the vacuum pump 11 directly sucks air into the suction chamber 42 through the No. 2 air channel 44 and the No. 1 air channel 43 to achieve dust removal and adsorption processing.

[0062] Among them, a self-cleaning component 13 is fixed on both sides of the rotating part 6, and the self-cleaning component 13 includes a connecting plate 131, an inclined rod 132 and a push plate 133. The push plate 133 is movably sleeved inside the collecting component 14, and the connecting plate 131 is fixed on the two side brackets of the rotating part 6, and the two ends of the inclined rod 132 are fixedly connected to the push plate 133 and the connecting plate 131 respectively.

[0063] The rotating part 6 provides rotational power to maintain the power for rotational cutting and grinding.

[0064] The working principle and use process of the present invention are as follows: when in use, an external robotic arm is used to clamp the PCB board and insert it between the two sets of positioning and clamping components 2. It is inserted into the positioning groove 22 in the positioning and clamping component 2 at a preset height. Then the air supply component 10 is started, and the air pump 102 inputs the pressurized air into the vent 28 at the bottom of the positioning frame 21 through the connecting air channel 15 in the support frame 1, and inputs it into each inner groove 23 through the connecting groove 210. The pressurized air fills the inner groove 23 and pushes the movable plate 24 to move. As the movable plate 24 moves, the tension spring 26 is stretched, and the spring 26 is stretched. The magnetic pad 25 moves with the movable plate 24 and is clamped up and down along the ends of both sides of the PCB board. Then the vacuum pump 11 is started to keep the movable frame 5 in the initial position. At this time, the magnetic plate 52 is located above the magnetic column 92. The movable block 91 moves down under the repulsion of the same poles and covers the No. 1 air channel 43. At this time, the side port 95 moves down and connects with the No. 2 air channel 44. The No. 2 air channel 44 is connected with the through hole 96 through the side port 95. At this time, the through hole 96 is aligned with the side hole 47 for communication. The vacuum pump 11 draws air into the connecting component 3 through the No. 2 air channel 44, the side port 95, the through hole 96 and the side hole 47. As a result, air is sucked into the middle cavity 29 in the positioning frame 21. When the PCB board is sealed and positioned and the negative pressure hole 27 of the sealing column is sealed, the air pressure inside the middle cavity 29 is reduced. The negative pressure holes 27 on both sides of the PCB board are fixed between the positioning clamping components 2 by the negative pressure adsorption force, completing the positioning and clamping. Then, the transverse adjustment part 12 is started to rotate the lead screw and drive the movable frame 5 to move transversely. The movable block 91 in the automatic reversing component 9 automatically resets and seals the connecting component 3, maintaining the negative pressure adsorption fixation. At the same time, the rotating part 6 is started to drive the cutting component 7 to rotate, the cutting knife 72 rotates and moves transversely, and moves along the positioning The pins are cut off at the bottom of the PCB board to complete the cutting process; and the cut pin fragments are ejected to both sides and fall after the collision, and slide into the bottom groove along the inclined plate 1 141 and the inclined plate 2 142 in the collecting component 14, and then the movable frame 5 is moved in the opposite direction to reset, driving the self-cleaning component 13 to push along the collecting component 14, and the accumulated pin fragments are automatically pushed out to complete the self-cleaning; when the cutting is completed, and the movable frame 5 is reset as the movable frame 5 moves and resets, and the pins are automatically pushed out, the movable frame 5 moves back to the initial position, and the cutting knife 72 is spirally taken out of the connecting sleeve 71, and replaced Figure 16 The grinding disc structure in the grinding disc is adapted and installed with the threaded rod at the bottom of the grinding disc and the connecting sleeve 71. The vacuum pump 11 is started again to first adsorb and fix the PCB board, and the rotating part 6 is started to drive the grinding disc to rotate, and the movable frame 5 is moved forward again, and the bottom of the cut pin is polished. When the movable frame 5 is moved away and the magnetic plate 52 and the magnetic column 92 are staggered, the movable block 91 is elastically pulled by the spring 2 93 and resets and moves upward. The side opening 95 moves upward and staggers with the No. 2 air channel 44. At the same time, the sealing sleeve 94 moves upward and resets to block and seal the side hole 47, and the No. 1 air channel 43 is directly connected to the No. 2 air channel 44 through the assembly chamber 46. The vacuum pump 11 directly sucks the air in the suction chamber 42 through the No. 2 air channel 44, the assembly chamber 46 and the No. 1 air channel 43, so that the suction pipes 45 on both sides suck and process the dust generated by grinding upward, completing the automatic dust removal in the grinding stage.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for removing pins from a PCB circuit board after soldering components, comprising a support frame (1), characterized in that: The two ends of the top of the support frame (1) are respectively fixed with positioning clamping components (2), the top of the support frame (1) is fixed with an air supply component (10), the air supply component (10) inputs gas into the positioning clamping component (2) through the support frame (1), the outer side of the support frame (1) is fixed with a connecting component (3), the interior of the support frame (1) is fixed with a distribution type guide seat (4), the air outlet end of the connecting component (3) is connected to the positioning clamping component (2), the air inlet end of the connecting component (3) is connected to the distribution type guide seat (4), the top of the distribution type guide seat (4) is slidably provided with a movable frame (5), the movable frame (5) is fixed with a connecting component (3) and the connecting component (3) is connected to the positioning clamping component (2). A rotating part (6) is fixedly provided on the top of the movable frame (5), and a cutting component (7) is fixedly connected to the output end of the rotating part (6). An automatic reversing component (9) is provided inside the distributing guide seat (4). A vacuum pump (11) is provided at one end of the distributing guide seat (4). The vacuum pump (11) sucks air toward the connecting component (3) and the top of the distributing guide seat (4) through the automatic reversing component (9). A transverse adjustment part (12) is provided on the top of the distributing guide seat (4). The transverse adjustment part (12) controls the reciprocating transverse movement of the movable frame (5). Side frames (8) are fixedly provided at both ends of the support frame (1). The automatic reversing assembly (9) includes a movable block (91), a magnetic column (92), a second spring (93), a sealing sleeve (94), a side opening (95) and a through hole (96); The positioning clamping assembly (2) comprises a positioning frame (21), a positioning groove (22), an inner groove (23), a movable plate (24), an elastic pad (25), a spring (26), a negative pressure hole (27), a vent (28), an intermediate cavity (29) and a communicating groove (210), wherein the positioning frame (21) is fixedly connected to the top of the support frame (1), the positioning groove (22) is symmetrically arranged on the front of the positioning frame (21) and passes through the front end of the positioning frame (21), the inner groove (23) is arranged inside the positioning frame (21), the inner groove (23) is located outside the positioning groove (22) and is communicated with the positioning groove (22), the movable plate (24) is movably sleeved inside the inner groove (23), the spring (26) is symmetrically arranged on the front of the positioning frame (21), and ... symmetrically arranged on the front of the positioning frame (21), and the inner groove (23) is symmetrically arranged on the front of the positioning frame (21), the inner groove (23) is symmetrically arranged on the front of the positioning frame (21), the inner groove (23) is symmetrically arranged on the front of the One end of the positioning frame (21) is fixed inside the inner groove (23) and the other end is fixedly connected to the movable plate (24), the elastic pad (25) is fixedly connected to the side of the movable plate (24) and close to the side of the positioning groove (22), the negative pressure hole (27) and the middle cavity (29) are both opened inside the positioning frame (21), one end of the negative pressure hole (27) is connected to the middle cavity (29), and the other end is connected to the middle cavity (29), the vent (28) is opened at the bottom of the positioning frame (21) and is connected to the inner groove (23) located below, the connecting groove (210) is opened in the positioning frame (21), and the two inner grooves (23) located on the front of the positioning frame (21) are connected to each other through the connecting groove (210); A communicating air passage (15) is provided inside the support frame (1), and the upper end of the communicating air passage (15) is communicated with the vent (28). The air supply assembly (10) comprises a bottom frame (101) and an air pump (102), wherein the air pump (102) is fixed in the bottom frame (101), and the air outlet end of the air pump (102) is communicated with the communicating air passage (15). Self-cleaning assemblies (13) are fixed on both sides of the rotating portion (6), and the self-cleaning assembly (13) comprises a connecting plate (131), an inclined rod (132) and a push plate (133), wherein the push plate (133) is movably sleeved inside the collecting assembly (14), and the connecting plate (131) is fixed to the brackets on both sides of the rotating portion (6), and the two ends of the inclined rod (132) are fixedly connected to the push plate (133) and the connecting plate (131) respectively.

2. The device for removing pins from a PCB circuit board after component welding according to claim 1, characterized in that: The connecting assembly (3) includes a No. 1 pipe (31), a connecting frame (32) and a No. 2 pipe (33), one end of the No. 1 pipe (31) is fixedly connected to the top of the connecting frame (32), the other end of the No. 1 pipe (31) is fixedly connected to the outer side of the positioning frame (21) and is connected to the middle cavity (29), the connecting frame (32) is fixedly connected to the outer side of the support frame (1), one end of the No. 2 pipe (33) is fixed to and connected with the connecting frame (32), and the other end is fixed to the side of the distributing guide seat (4).

3. The device for removing pins from a PCB circuit board after component welding according to claim 2, characterized in that: The distributing guide seat (4) includes a fixed seat (41), a suction chamber (42), a No. 1 airway (43), a No. 2 airway (44), a suction pipe (45), an assembly chamber (46), a side hole (47) and a sleeve groove (48), wherein the fixed seat (41) is fixedly connected to the interior of the support frame (1), the suction chamber (42) is opened inside the fixed seat (41) and is filled with a filter layer, the suction pipe (45) is fixedly connected to both sides of the fixed seat (41) and is connected to the suction chamber (42), the No. 1 airway (43) and the No. 2 airway (44) are both opened inside the fixed seat (41), the No. 1 airway (43) and the No. 2 airway (44) are connected to the No. 1 airway (43) and the No. 2 airway (44) are connected to the No. 2 airway (44). The air channel (43) and the second air channel (44) are symmetrically distributed on both sides of the assembly chamber (46), the two ends of the first air channel (43) are respectively connected to the assembly chamber (46) and the suction chamber (42), the two ends of the second air channel (44) are respectively connected to the assembly chamber (46) and the suction end of the vacuum pump (11), the side hole (47) is opened on both sides of the fixing seat (41) and is connected to the second pipe (33), the sleeve groove (48) is opened at the bottom of the fixing seat (41) and is connected to the assembly chamber (46), and the first air channel (43), the second air channel (44) and the side hole (47) are all located in the same horizontal plane.

4. The device for removing pins from a PCB circuit board after component welding according to claim 3, characterized in that: The movable frame (5) includes a movable seat (51) and a magnetic plate (52), wherein the movable seat (51) is slidably sleeved on the top of the fixed seat (41), and the magnetic plate (52) is fixed to the bottom of the movable seat (51). The rotating part (6) is fixed to the top of the movable seat (51), and the rotating part (6) includes a bracket and a motor, and the output shaft of the motor is fixedly connected to the cutting assembly (7).

5. The device for removing pins from a PCB circuit board after component welding according to claim 4, characterized in that: The cutting assembly (7) comprises a connecting sleeve (71) and a cutting knife (72), wherein the connecting sleeve (71) is fixedly connected to the output shaft of the motor, and the cutting knife (72) is threadedly sleeved on the top of the connecting sleeve (71) via a bottom threaded rod.

6. The device for removing pins from a PCB circuit board after component welding according to claim 5, characterized in that: The transverse adjustment part (12) includes a screw and a control motor, the control motor drives the screw to rotate forward and reverse, and the movable seat (51) is threadedly connected to the screw. A collection component (14) is provided inside the support frame (1), and the collection component (14) includes an inclined plate 1 (141) and an inclined plate 2 (142). The inclined upper end of the inclined plate 1 (141) is fixed to the side of the fixed seat (41), and the inclined lower end is fixed in the support frame (1). The inclined upper end of the inclined plate 2 (142) is fixed on the inner wall of the support frame (1), and the inclined lower end is fixed inside the support frame (1) and fixedly connected to the inclined plate 1 (141).

7. The device for removing pins from a PCB circuit board after component welding according to claim 6, characterized in that: The movable block (91) is movably sleeved in the assembly cavity (46), the magnetic column (92) is fixedly connected to the top of the movable block (91), one end of the spring (93) is fixed to the top of the movable block (91), and the other end is fixed to the top of the inner cavity of the assembly cavity (46), the sealing sleeve (94) is fixedly connected to the bottom of the movable block (91), and is movably sleeved in the sleeve groove (48), the side opening (95) is opened on the front of the movable block (91) and faces the second airway (44), the through hole (96) is opened on the side of the movable block (91), and is located on both sides of the side opening (95) and is connected to the side opening (95), the side hole (47) is located on the moving path of the through hole (96), and the second airway (44) is located on the moving path of the side opening (95).

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