Spot suction and continuous suction switchable tin suction system

Abstract

The utility model discloses a spot suction and continuous suction switchable tin suction system, which comprises a tin sucker, a tin suction tube, a tin suction tube and a tin suction tube, and is characterized in that the tin sucker comprises a shell, and the shell is provided with an inner cavity, an air nozzle and a negative pressure interface; the pushing cylinder is arranged on the shell; the cleaning ejector rod is driven by an output shaft of the pushing cylinder; the auxiliary piston is driven by the output shaft of the pushing cylinder; the control system comprises an air source interface; the air exhaust module comprises an air inlet, an air exhaust opening and an air exhaust opening, and the air inlet is connected with the air source connector; the air exhaust hose is used for connecting the negative pressure connector with the air exhaust opening; a first on-off valve is arranged between the air exhaust hose and the negative pressure connector, and a second on-off valve is arranged between the air source connector and the air inlet. By the adoption of the scheme, the tin suction system capable of being switched between spot suction and continuous suction is provided, and the negative pressure connector and the extraction opening are cut off through the first opening and closing valve and the second opening and closing valve to achieve spot suction or communicated through the negative pressure connector and the extraction opening to achieve continuous suction.

Description

Technical Field

[0001] This utility model belongs to the field of desoldering technology, specifically relating to a desoldering system that can switch between spot desoldering and continuous desoldering. Background Technology

[0002] After the soldering iron melts the solder at the solder joint, a desoldering pump is needed to remove the solder from the electronic component's pins in order to remove the solder and disassemble the electronic component.

[0003] Existing desoldering pumps are typically point-suction type, which use the rapid movement of a piston to quickly reduce the air pressure inside the piston chamber, thereby drawing solder into the piston chamber through an air nozzle, as shown in Chinese Patent No. CN202320159362.X. Point-suction type desoldering pumps generate suction only during piston movement, making desoldering more precise. Furthermore, after desoldering, the pump is less likely to attract electronic components, resulting in smoother operation.

[0004] However, for cleaning solder from large-area continuous soldering, point-suction desoldering pumps require the piston to work repeatedly, resulting in low desoldering efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a desoldering system that allows for switching between point suction and continuous suction by either cutting off the negative pressure port and the air extraction port through a first on / off valve and a second on / off valve to achieve point suction or connecting the negative pressure port and the air extraction port to achieve continuous suction.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A desoldering system switchable between spot and continuous desoldering, characterized in that it comprises: a desoldering pump, the desoldering pump comprising: a housing, the housing having an inner cavity, an air nozzle, and a negative pressure interface, the air nozzle and the negative pressure interface being connected to the inner cavity; a push cylinder, the push cylinder being disposed on the housing; a cleaning push rod, the cleaning push rod being located within the inner cavity and being driven by the output shaft of the push cylinder to insert into or disengage from the air nozzle; an auxiliary piston, the auxiliary piston being disposed within the inner cavity and being driven by the output shaft of the push cylinder to slide within the inner cavity, the negative pressure interface and the air nozzle being located on the same side of the auxiliary piston; a control system, the control system comprising: an air source interface; an air extraction module, the air extraction module including an air inlet, an air extraction port, and an air exhaust port, the air inlet being connected to the air source interface; an air extraction hose, the air extraction hose being used to connect the negative pressure interface and the air extraction port; a first on / off valve being disposed between the air extraction hose and the negative pressure interface, and / or, a second on / off valve being disposed between the air source interface and the air inlet.

[0008] The present invention is further configured such that: the push cylinder is provided with a push air port and a retraction air port; the push air port is vented to allow the cleaning push rod to insert into the air nozzle, and the retraction air port is vented to allow the cleaning push rod to disengage from the air nozzle; the control system includes a pneumatic reversing valve, which is provided with a first air port, a second air port, and a third air port; the first air port is connected to the push air port, the second air port is connected to the retraction air port, and the third air port is connected to an air source interface; the pneumatic reversing valve controls the third air port to connect to either the first or the second air port; the second air port is connected to a second on / off valve.

[0009] The present invention is further configured such that: the control system includes a control box, an assembly chamber is provided inside the control box, the air extraction module, the pneumatic reversing valve, and the second on / off valve are all located in the assembly chamber; the air source interface is assembled in the control box and located outside the control box; the second on / off valve is provided with a second knob portion extending out of the control box.

[0010] The present invention is further configured such that: the air extraction module is detachably equipped with a filter at the exhaust port, and the filter is arranged to extend out of the control box.

[0011] The present invention is further configured such that: the control box is provided with a first two-way vent connector, one end of the first two-way vent connector is located in the assembly chamber and is used to communicate with a first air port, and the other end of the first two-way vent connector is located outside the control box and is used to communicate with a push air port; and / or, the control box is provided with a second two-way vent connector and a three-way vent connector, one end of the second two-way vent connector is located in the assembly chamber and is used to connect with one end of the three-way vent connector, and the other end of the second two-way vent connector is located outside the control box and is used to communicate with a retraction air port, and the other two ends of the three-way vent connector are respectively connected to a second air port and a second on / off valve; and / or, the control box is provided with a third two-way vent connector, one end of the third two-way vent connector is located in the assembly chamber and is used to communicate with an air extraction port, and the other end of the third two-way vent connector is located outside the control box and is used to communicate with a first on / off valve.

[0012] The present invention is further configured such that: the pneumatic reversing valve is provided with a fourth air port and a fifth air port; when the third air port and the first air port are connected, the first air port and the fourth air port are disconnected, and the second air port and the fifth air port are connected; when the third air port and the second air port are connected, the second air port and the fifth air port are disconnected, and the first air port and the fourth air port are connected.

[0013] The present invention is further configured such that: a first bolt and a second bolt are provided on the pneumatic reversing valve; the first bolt passes through the control box from the outside and is threaded to the fourth air port to fix the pneumatic reversing valve to the control box, and the head of the first bolt is located outside the control box; the second bolt passes through the control box from the outside and is threaded to the fifth air port to fix the pneumatic reversing valve to the control box, and the head of the second bolt is located outside the control box; both the first bolt and the second bolt are provided with air passages, and each air passage is provided with a mesh at the head of the first bolt or the head of the second bolt.

[0014] The present invention is further configured such that: the desoldering pump also includes a control switch, the control switch is disposed on the push cylinder, the control switch is provided with a flip-up switch part, the switch part is inclined downward; and / or, the housing is an upwardly extending cylindrical shape, the push cylinder is an upwardly extending cylindrical shape, and the push cylinder is disposed at the upper end of the housing, the top of the push cylinder is provided with a guide member, the guide member is provided with a through hole directly above the first opening and closing valve, the air extraction hose passes through the through hole from top to bottom, and is connected downward to the first opening and closing valve.

[0015] The present invention is further configured such that: the control switch is provided with a clamping part, the clamping part is clamped on the outer periphery of the push cylinder, and the switch part is located on the front side of the outer periphery of the push cylinder; the push cylinder is provided with a push air port and a retraction air port, both of which are located on the rear side of the outer periphery of the push cylinder; the first opening and closing valve is located on the left and right sides of the outer periphery of the housing.

[0016] The present invention is further configured such that the air nozzle is detachably mounted on the housing.

[0017] By adopting the above technical solution, 1. When continuous suction is required, by controlling the first on / off valve to connect the suction hose and the negative pressure interface, and by controlling the second on / off valve to connect the air source interface and the air inlet, the air source interface can be ventilated to the air inlet, allowing the suction module to continuously draw air from the inner cavity space below the auxiliary piston sequentially through the negative pressure interface, the first on / off valve, the suction hose, and the second on / off valve into the suction module, and finally discharge it from the exhaust port. This achieves a negative pressure state in the inner cavity space below the auxiliary piston, so that the air below the air nozzle will be drawn into the inner cavity along with the solder, thus achieving solder suction. As long as the air supply is continuous, continuous solder suction can be achieved, making it efficient and convenient to clean the solder from large-area continuous soldering. 2. When spot suction is required, by controlling the first on / off valve to cut off the suction hose and the negative pressure interface, and by controlling the second on / off valve to cut off the air source interface and the air inlet, only the operation of the push cylinder drives the auxiliary piston to move, thereby changing the air pressure in the inner cavity and performing solder suction. Specifically, the push cylinder... The cylinder's output shaft moves upward, causing the auxiliary piston to move upward as well. This expands the air in the cavity below the auxiliary piston, reducing the air pressure. The air below the nozzle, along with solder, is then drawn into the cavity, achieving solder absorption. After the output shaft of the push cylinder reaches its upward position, the air pressure gradually equalizes, ending the solder absorption process. The output shaft of the push cylinder then moves downward, causing the auxiliary piston to reset and allowing for the next solder absorption cycle. The output shaft also moves the cleaning rod downward, inserting it into the nozzle to clean the solder and prevent blockage. The first on / off valve disconnects the suction hose and negative pressure interface, ensuring that during initial suction, the space within the suction hose does not affect the expansion of the cavity below the auxiliary piston, resulting in a greater pressure difference and improved solder absorption capacity. The second on / off valve disconnects the air source interface and air inlet, preventing air supply to the suction module during initial suction, thus saving air. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an assembly drawing illustrating a specific embodiment of the present utility model;

[0020] Figure 2 This is an assembly drawing illustrating a specific embodiment of the present utility model;

[0021] Figure 3This is an assembly diagram of the desoldering pump in a specific embodiment of this utility model;

[0022] Figure 4 This is a cross-sectional view of the desoldering pump in a specific embodiment of this utility model;

[0023] Figure 5 This is a cross-sectional view of the first on / off valve in a specific embodiment of this utility model.

[0024] Figure 6 for Figure 4 Enlarged view of A in the middle;

[0025] Figure 7 This is an exploded view of the desoldering pump in a specific embodiment of this utility model;

[0026] Figure 8 This is an exploded view of the control system in a specific embodiment of this utility model;

[0027] Figure 9 This is a schematic diagram of the control system structure in a specific embodiment of the present utility model;

[0028] Figure 10 This is a schematic diagram of the pneumatic reversing valve in a specific embodiment of the present utility model;

[0029] Figure 11 This is a schematic diagram of the pneumatic reversing valve in a specific embodiment of the present utility model;

[0030] Figure 12 This is a schematic diagram of the air extraction module in a specific embodiment of the present utility model;

[0031] Figure 13 This is a schematic diagram of the air extraction module in a specific embodiment of the present utility model;

[0032] Figure 14 This is a cross-sectional view of the first bolt or the second bolt in a specific embodiment of this utility model;

[0033] Figure 15 This is a graphic symbol for the vacuum generator CV-15HS in a specific embodiment of this utility model;

[0034] Figure 16 This is the graphic symbol for the start-up reversing valve 4V210-08 in a specific embodiment of this utility model;

[0035] Figure 17 This is a graphic symbol for the one-way throttle valve KLA-6 in a specific embodiment of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Desoldering pump;

[0038] 11. Housing; 12. Air nozzle; 13. Push cylinder; 14. Cleaning push rod; 15. Auxiliary piston; 16. Control switch; 17. Guide piece;

[0039] 111. Inner cavity; 112. Negative pressure interface; 131. Push air port; 132. Retract air port; 141. Positioning part; 151. Rubber ring; 152. Mounting screw hole; 153. Mounting through hole; 161. Switch part; 162. Clamping part;

[0040] 171. Piercing hole;

[0041] 2. Control system;

[0042] 21. Air source interface; 22. Air extraction module; 23. Pneumatic reversing valve; 24. Control box; 25. Filter;

[0043] 221. Air inlet; 222. Air extraction port; 223. Exhaust port; 241. Assembly compartment;

[0044] 231. First air inlet; 232. Second air inlet; 233. Third air inlet; 234. Fourth air inlet; 235. Fifth air inlet;

[0045] 3. Suction hose;

[0046] 41. First on / off valve; 42. Second on / off valve;

[0047] 411. First rotating part; 421. Second rotating part;

[0048] 51. First two-way vent connector; 52. Second two-way vent connector; 53. Third two-way vent connector; 54. Three-way vent connector;

[0049] 61. First bolt; 62. Second bolt; 63. Air passage; 64. Mesh section. Detailed Implementation

[0050] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model, and the specific and direct descriptions of related structures are merely for the convenience of understanding the present utility model; the specific features do not necessarily or directly limit the scope of implementation of the present utility model. Conventional choices and substitutions made by those skilled in the art under the guidance of the present utility model should all be considered within the scope of protection claimed by this utility model.

[0051] like Figures 1-17As shown, this utility model discloses a desoldering system that can switch between spot and continuous desoldering, including a desoldering pump 1 and a control system 2. The desoldering pump 1 is handheld by the user, and the control system 2 supplies air and electricity to the desoldering pump 1.

[0052] Specifically, the desoldering pump 1 includes:

[0053] The housing 11 is cylindrical in the vertical direction so that an inner cavity 111 is formed inside the housing 11. In addition, an air nozzle 12 is provided at the bottom of the housing 11, and a negative pressure port 112 is provided on the right side of the housing 11, which extends outward from the inner cavity 111. Both the air nozzle 12 and the negative pressure port 112 are connected to the inner cavity 111.

[0054] The push cylinder 13, specifically used in this embodiment, is a pneumatic cylinder. The length direction of the push cylinder 13 is vertically arranged, and the lower end of the push cylinder 13 is connected to the inner circumference of the upper end of the housing 11 by a threaded connection. In addition, the output shaft of the push cylinder 13 extends downward into the inner cavity 111.

[0055] Cleaning push rod 14 is located in the inner cavity 111, and the cleaning push rod 14 and the output shaft of the push cylinder 13 are fixedly arranged so that the cleaning push rod 14 is driven by the output shaft of the push cylinder 13 to insert downward into the air nozzle 12 or disengage upward from the air nozzle 12.

[0056] An auxiliary piston 15 is disposed within the inner cavity 111, and the output shaft of the auxiliary piston 15 and the push cylinder 13 are fixedly arranged so that the auxiliary piston 15 is driven by the output shaft of the push cylinder 13 to slide within the inner cavity 111. The outer peripheral wall of the auxiliary piston 15 is attached to the inner peripheral wall of the inner cavity 111 or maintains a small gap, so that when the auxiliary piston 15 moves upward, the air in the space of the inner cavity 111 below the auxiliary piston 15 expands and the air pressure decreases; when the auxiliary piston 15 moves downward, the air in the space of the inner cavity 111 below the auxiliary piston 15 is compressed and the air pressure increases. In addition, the negative pressure port 112 and the air nozzle 12 are both located on the lower side of the auxiliary piston 15.

[0057] Specifically, control system 2 includes:

[0058] Gas source interface 21;

[0059] The air extraction module 22 includes an air inlet 221, an air extraction port 222 and an exhaust port 223. The air inlet 221 is connected to the air source interface 21.

[0060] The suction hose 3 is used to connect the negative pressure port 112 and the suction port 222.

[0061] In addition, a first on / off valve 41 is provided between the air extraction hose 3 and the negative pressure interface 112, and a second on / off valve 42 is provided between the air source interface 21 and the air inlet 221.

[0062] Therefore, 1. When continuous suction is required, by operating the first on / off valve 41 to connect the suction hose 3 and the negative pressure port 112, and by operating the second on / off valve 42 to connect the air source port 21 and the air inlet 221, the air source port 21 can supply air to the air inlet 221, thereby allowing the suction module 22 to continuously supply air to the inner cavity 111 space below the auxiliary piston 15. This air is sequentially drawn into the suction module 22 through the negative pressure port 112, the first on / off valve 41, the suction hose 3, and the second on / off valve 42, and finally discharged from the exhaust port 223, thus achieving the function of continuously supplying air to the inner cavity below the auxiliary piston 15. 1. Space 111 is under negative pressure, so the air below the air nozzle 12 will be drawn into the inner cavity 111 along with the solder, thus achieving solder absorption. As long as the air supply is continuous, continuous solder absorption can be achieved, making it efficient and convenient to clean up solder from large-area continuous soldering. 2. When spot suction is required, by operating the first on / off valve 41 to cut off the air suction hose 3 and the negative pressure interface 112, and by operating the second on / off valve 42 to cut off the air source interface 21 and the air inlet 221, only the operation of the push cylinder 13 drives the auxiliary piston 15 to move, thereby changing the air pressure in the inner cavity 111 to achieve solder absorption. Specifically, The output shaft of the push cylinder 13 moves upward, causing the auxiliary piston 15 to move upward as well. This causes the air in the inner cavity 111 below the auxiliary piston 15 to expand, reducing the air pressure. As a result, the air below the air nozzle 12, along with solder, is drawn into the inner cavity 111, achieving solder absorption. After the output shaft of the push cylinder 13 reaches its upward position, the air pressure gradually equalizes, ending the solder absorption process. Furthermore, the output shaft of the push cylinder 13 moves downward, causing the auxiliary piston 15 to return to its original position for the next solder absorption cycle. The output shaft of the push cylinder 13 also moves the cleaning push rod 14 downward as well. The movement causes the cleaning rod 14 to be inserted downwards into the air nozzle 12 to clean the solder inside the air nozzle 12 and prevent the air nozzle 12 from becoming blocked; 3. The first opening and closing valve 41 is set to cut off the suction hose 3 and the negative pressure interface 112, so that when the suction is applied, the space inside the suction hose 3 will not affect the expansion of the inner cavity 111 space below the auxiliary piston 15, so that a greater air pressure difference can be generated to improve the solder suction capacity; the second opening and closing valve 42 is set to cut off the air source interface 21 and the air inlet 221, so that when the suction is applied, the air source interface 21 will not supply air to the suction module 22, which has the purpose of saving air.

[0063] Specifically, in this embodiment, the air extraction module 22 uses a vacuum generator CV-15HS.

[0064] In other embodiments, only the first on / off valve 41 or the second on / off valve 42 may be provided.

[0065] It should be noted that the top outer periphery of the housing 11 needs to be designed with openings or other means to allow the upper area of ​​the auxiliary piston 15 to communicate with the outside world, so as to ensure the smooth up-and-down movement of the auxiliary piston 15.

[0066] Preferably, the air nozzle 12 is detachably mounted on the housing 11 by means of a threaded connection, so that the inside of the housing 11 can be cleaned by removing the air nozzle 12.

[0067] The push cylinder 13 is equipped with a push air port 131 and a retraction air port 132. The push air port 131 is vented to allow the cleaning push rod 14 to insert into the air nozzle 12, and the retraction air port 132 is vented to allow the cleaning push rod 14 to disengage from the air nozzle 12. Correspondingly, the control system 2 includes a pneumatic reversing valve 23, which is equipped with a first air port 231, a second air port 232, and a third air port 233. The first air port 231 is connected to the push air port 131, the second air port 232 is connected to the retraction air port 132, and the third air port 233 is connected to the air source interface 21. The pneumatic reversing valve 23 controls the third air port 233 to connect to the first air port 231 or the second air port 232. The second air port 232 is connected to the second on / off valve 42.

[0068] Therefore, when continuous suction is required, 1. By connecting the third air port 233 and the second air port 232, the air source interface 21 simultaneously supplies air to the suction module 22 and the retraction air port 132. This causes the output shaft of the push cylinder 13 to drive the auxiliary piston 15 upward, causing the air in the inner cavity 111 below the auxiliary piston 15 to expand and reduce the air pressure. Furthermore, by venting through the suction module 22, air in the inner cavity 111 below the auxiliary piston 15 is continuously drawn into the suction module 22 sequentially through the negative pressure interface 112, the first on / off valve 41, the suction hose 3, and the second on / off valve 42, and finally discharged from the exhaust port 223. This allows the space in the inner cavity 111 below the auxiliary piston 15 to be in a negative pressure state. Under the action of dual air pressure, the desoldering pump 1 has a greater suction force before the auxiliary piston 15 stops moving, thus enhancing the desoldering capacity. 2. By connecting the third air port 233 and the first air port 231, the air source interface 21 stops supplying air to the suction module 22 and the retraction air port 132, and switches to supplying air to the push air port 131. Thus, during the cleaning of the nozzle 12 by the push rod 14, the air source interface 21 will not continuously supply air to the suction module 22, which not only saves air, but also prevents the suction from exerting an inward force on the solder at the nozzle 12 and affecting the cleaning of the solder at the nozzle 12.

[0069] The desoldering pump 1 also includes a control switch 16, which is mounted on the push cylinder 13. The control switch 16 has a flip-up switch part 161, which is tilted downwards. Therefore, when the user holds the housing 11, they can press the switch part 161 with their fingers to desolder, and release the switch to stop desoldering, making operation more convenient.

[0070] In addition, a guide member 17 is provided on the top of the push cylinder 13. The guide member 17 is located directly above the first on / off valve 41 and has a through hole 171 extending vertically. The suction hose 3 passes through the through hole 171 from top to bottom and is connected to the first on / off valve 41 downwards. This ensures that the suction hose 3, under the action of the through hole 171, does not easily affect the solder absorption below during use, making the operation smoother.

[0071] Preferably, the control switch 16 is provided with a C-shaped clamping part 162, which clamps the outer periphery of the push cylinder 13, and the switch part 161 is located on the front side of the outer periphery of the push cylinder 13; the push cylinder 13 is provided with a push air port 131 and a retraction air port 132, both of which are located on the rear side of the outer periphery of the push cylinder 13; the first on / off valve 41 is located on the left and right sides of the outer periphery of the housing 11. This makes the overall structure more orderly and less prone to interference between components, thus making the operation smoother.

[0072] In this embodiment, a rubber ring 151 is provided on the outer peripheral wall of the auxiliary piston 15 so that the rubber ring 151 abuts against the inner peripheral wall of the inner cavity 111 to seal the gap between the two. Thus, when the auxiliary piston 15 moves, the space of the inner cavity 111 below the auxiliary piston 15 can generate a smaller air pressure and improve the solder absorption capacity.

[0073] Specifically, in this embodiment, the upper and lower ends of the auxiliary piston 15 are respectively provided with mounting screw holes 152 and mounting through holes 153. The diameter of the mounting screw hole 152 is larger than the diameter of the mounting through hole 153. The upper end of the cleaning push rod 14 is provided with a positioning part 141 so that the cleaning push rod 14 passes through the mounting screw hole 152 and the mounting through hole 153 from top to bottom. The positioning part 141 faces downward to the bottom end of the mounting screw hole 152 and abuts against the auxiliary piston 15 for positioning. In addition, the output shaft of the push cylinder 13 is threaded downward into the mounting screw hole 152, and its lower end abuts against the upper end of the positioning part 141 to complete the installation. This makes the cleaning push rod 14 more stable to be installed due to the constraint of the auxiliary piston 15 and the output shaft of the push cylinder 13.

[0074] In this embodiment, the first opening and closing valve 41 is an L-shaped air pipe connector, and the first opening and closing valve 41 is threadedly connected to a first rotating part 411 at the L-shaped intersection, so that the first rotating part 411 can be rotated and inserted into the channel of the first opening and closing valve 41 to cut off the first opening and closing valve 41, or the first rotating part 411 can be rotated in the opposite direction to open the channel of the first opening and closing valve 41.

[0075] Specifically, the control system 2 includes a control box 24, which contains an assembly chamber 241. The air extraction module 22, the pneumatic reversing valve 23, and the second on / off valve 42 are all located in the assembly chamber 241. The air source interface 21 is mounted on the control box 24 and is located on the outside of the control box 24. The second on / off valve 42 has a second knob that extends out of the control box 24.

[0076] Therefore, the air extraction module 22, pneumatic reversing valve 23, and second on / off valve 42 are built into the assembly chamber 241 inside the control box 24 for protection. Moreover, the air source interface 21 and the second rotating part 421 are placed outside the control box 24 to facilitate the connection of the air source and the air source interface 21, and to facilitate the operation of the second rotating part 421 to control the opening and closing of the second on / off valve 42.

[0077] Specifically, the pneumatic reversing valve 23 in this embodiment is a 4V210-08.

[0078] Specifically, in this embodiment, the second on / off valve 42 is a one-way throttle valve KLA-6.

[0079] Preferably, in this embodiment, the air extraction module 22 is detachably equipped with a filter 25 at the exhaust port 223, and the filter 25 extends out of the control box 24. Therefore, by setting the filter 25 to filter the air discharged from the exhaust port 223, it is more environmentally friendly, and the external, detachable filter 25 makes it convenient for users to replace the filter 25 outside.

[0080] Specifically, the control box 24 is equipped with a first two-way vent connector 51. One end of the first two-way vent connector 51 is located inside the assembly chamber 241 and is connected to the first air port 231 via a hose. The other end of the first two-way vent connector 51 is located outside the control box 24 and is connected to the push air port 131 via a hose. The control box 24 is equipped with a second two-way vent connector 52 and a three-way vent connector 54. One end of the second two-way vent connector 52 is located inside the assembly chamber 241 and is connected to one end of the three-way vent connector 54 via a hose. The other end of the second two-way vent connector 52 is located outside the control box 24 and is connected to the retraction air port 132 via a hose. One end of the other two ends of the three-way vent connector 54 is connected to the second air port 232 via a hose, and the other end is connected to the second on / off valve 42 via a hose and an air pipe structure. The control box 24 is provided with a third two-way vent pipe connector 53. One end of the third two-way vent pipe connector 53 is located inside the assembly chamber 241 and is connected to the air extraction port 222 through a hose. The other end of the third two-way vent pipe connector 53 is located outside the control box 24 and is connected to the first on / off valve 41 through the air extraction hose 3.

[0081] In addition, the pneumatic reversing valve 23 is provided with a fourth air port 234 and a fifth air port 235. When the third air port 233 and the first air port 231 are connected, the first air port 231 and the fourth air port 234 are cut off, so that the air supplied by the third air port 233 is output through the first air port 231 to ensure that sufficient air pressure is provided to the push air port 131. The second air port 232 and the fifth air port 235 are connected, so that the exhaust of the retraction air port 132 can be discharged through the fifth air port 235 to ensure that the push cylinder is connected. 13. Smooth operation; When the third air port 233 and the second air port 232 are connected, the second air port 232 and the fifth air port 235 are cut off so that the air supplied by the third air port 233 is output through the second air port 232 to ensure sufficient air pressure for the retraction air port 132 and effective air supply for the suction module 22. The first air port 231 and the fourth air port 234 are connected so that the exhaust of the push air port 131 can be discharged through the fourth air port 234, ensuring the smooth operation of the push cylinder 13.

[0082] Specifically, the pneumatic reversing valve 23 is provided with a first bolt 61 and a second bolt 62. The first bolt 61 passes through the control box 24 from the outside and is threaded to the fourth air port 234 to fix the pneumatic reversing valve 23 to the control box 24, and the head of the first bolt 61 is located outside the control box 24. The second bolt 62 passes through the control box 24 from the outside and is threaded to the fifth air port 235 to fix the pneumatic reversing valve 23 to the control box 24, and the head of the second bolt 62 is located outside the control box 24. Both the first bolt 61 and the second bolt 62 are provided with air passages 63, and each air passage 63 is provided with a mesh part 64 at the head of the first bolt 61 or the head of the second bolt 62.

[0083] Therefore, 1. The control box 24 is installed using the first bolt 61 and the second bolt 62, and the first bolt 61 and the second bolt 62 correspond to the fourth air port 234 and the fifth air port 235 to make the overall structure simpler; 2. The air passage 63 on the first bolt 61 and the second bolt 62 enables the smooth discharge of gas from the fourth air port 234 and the fifth air port 235; 3. The mesh 64 on the first bolt 61 and the second bolt 62 allows the high-speed airflow to be dispersed into multiple fine airflows through the microporous structure of the mesh 64, reducing turbulence and pressure changes during gas injection, thereby reducing noise.

[0084] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A desoldering system that can switch between spot desoldering and continuous desoldering, characterized in that, include: A desoldering pump (1), the desoldering pump (1) comprising: The housing (11) is provided with an inner cavity (111), an air nozzle (12) and a negative pressure port (112), and the air nozzle (12) and the negative pressure port (112) are both connected to the inner cavity (111); A push cylinder (13) is mounted on the housing (11); Cleaning push rod (14), the cleaning push rod (14) is located in the inner cavity (111), and the cleaning push rod (14) is driven by the output shaft of the push cylinder (13) to insert or disengage the air nozzle (12); An auxiliary piston (15) is disposed in an inner cavity (111) and is driven by the output shaft of a push cylinder (13) to slide within the inner cavity (111). The negative pressure port (112) and the air nozzle (12) are located on the same side of the auxiliary piston (15). Control system (2), the control system (2) includes: Gas source interface (21); The air extraction module (22) includes an air inlet (221), an air extraction port (222) and an exhaust port (223), wherein the air inlet (221) is connected to the air source interface (21); A suction hose (3) is used to connect a negative pressure port (112) and a suction port (222); A first on / off valve (41) is provided between the air extraction hose (3) and the negative pressure port (112), and / or a second on / off valve (42) is provided between the air source port (21) and the air inlet (221).

2. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 1, characterized in that: The push cylinder (13) is provided with a push air port (131) and a retraction air port (132). The push air port (131) is vented to allow the cleaning push rod (14) to insert into the air nozzle (12). The retraction air port (132) is vented to allow the cleaning push rod (14) to disengage from the air nozzle (12). The control system (2) includes a pneumatic reversing valve (23), which is provided with a first air port (231), a second air port (232) and a third air port (233). The first air port (231) is connected to the push air port (131), the second air port (232) is connected to the retraction air port (132), and the third air port (233) is connected to the air source interface (21). The pneumatic reversing valve (23) controls the third air port (233) to connect to the first air port (231) or the second air port (232). The second air port (232) is connected to the second on / off valve (42).

3. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 2, characterized in that: The control system (2) includes a control box (24), and an assembly chamber (241) is provided inside the control box (24). The air extraction module (22), the pneumatic reversing valve (23), and the second opening and closing valve (42) are all located inside the assembly chamber (241). The gas source interface (21) is assembled on the control box (24) and located on the outside of the control box (24); The second on / off valve (42) is provided with a second knob that extends out of the control box (24).

4. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 3, characterized in that: The air extraction module (22) has a detachable filter (25) at the exhaust port (223), and the filter (25) extends out of the control box (24).

5. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 3, characterized in that: The control box (24) is provided with a first two-way vent connector (51). One end of the first two-way vent connector (51) is located inside the assembly chamber (241) and is used to communicate with the first air port (231). The other end of the first two-way vent connector (51) is located outside the control box (24) and is used to communicate with the push air port (131); and / or, The control box (24) is provided with a second two-way vent connector (52) and a three-way vent connector (54). One end of the second two-way vent connector (52) is located inside the assembly chamber (241) and is used to connect with one end of the three-way vent connector (54). The other end of the second two-way vent connector (52) is located outside the control box (24) and is used to connect with the retraction port (132). The other two ends of the three-way vent connector (54) are respectively connected to the second air port (232) and the second on / off valve (42); and / or, the control box (24) is provided with a third two-way vent connector (53). One end of the third two-way vent connector (53) is located inside the assembly chamber (241) and is used to connect with the air extraction port (222). The other end of the third two-way vent connector (53) is located outside the control box (24) and is used to connect with the first on / off valve (41).

6. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 3, characterized in that: The pneumatic reversing valve (23) is provided with a fourth air port (234) and a fifth air port (235); When the third air port (233) and the first air port (231) are connected, the first air port (231) and the fourth air port (234) are disconnected, and the second air port (232) and the fifth air port (235) are connected. When the third air port (233) and the second air port (232) are connected, the second air port (232) and the fifth air port (235) are disconnected, and the first air port (231) and the fourth air port (234) are connected.

7. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 6, characterized in that: The pneumatic reversing valve (23) is provided with a first bolt (61) and a second bolt (62). The first bolt (61) passes through the control box (24) from the outside and is threaded to the fourth air port (234) to fix the pneumatic reversing valve (23) to the control box (24). The head of the first bolt (61) is located outside the control box (24). The second bolt (62) passes through the control box (24) from the outside and is threaded to the fifth air port (235) to fix the pneumatic reversing valve (23) to the control box (24). The head of the second bolt (62) is located outside the control box (24). Both the first bolt (61) and the second bolt (62) are provided with air passages (63), and each air passage (63) is provided with a mesh part (64) at the head of the first bolt (61) or the head of the second bolt (62).

8. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 1, characterized in that: The desoldering pump (1) further includes a control switch (16), which is mounted on the push cylinder (13). The control switch (16) has a flip-up switch part (161) that is tilted downwards; and / or, The housing (11) is a cylindrical shape extending upwards, and the push cylinder (13) is a cylindrical shape extending upwards. The push cylinder (13) is located at the upper end of the housing (11). The top of the push cylinder (13) is provided with a through-hole (17). The through-hole (17) is located directly above the first opening and closing valve (41) and is provided with a through-hole (171) that runs vertically through it. The air extraction hose (3) passes through the through-hole (171) from top to bottom and is connected to the first opening and closing valve (41) downwards.

9. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 8, characterized in that: The control switch (16) is provided with a clamping part (162), which clamps the outer periphery of the push cylinder (13), and the switch part (161) is located on the front side of the outer periphery of the push cylinder (13); The push cylinder (13) is provided with a push air port (131) and a retraction air port (132), and the push air port (131) and the retraction air port (132) are both located on the rear side of the outer periphery of the push cylinder (13); The first on / off valve (41) is located on the left and right sides of the outer periphery of the housing (11).

10. The desoldering system that can switch between spot desoldering and continuous desoldering according to claim 1, characterized in that: The air nozzle (12) is detachably mounted on the housing (11).

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