A welding device for integrated circuit packaging

Abstract

The present invention relates to the technical field of integrated circuit welding, and more specifically, to a welding device for integrated circuit packaging. The device comprises an operating table, a carrying box arranged on the upper surface of the operating table, a welding gun bracket also arranged on the operating table, an exhaust mechanism for extracting the fume generated by welding is arranged on the side wall of the carrying box on the opposite side of the bracket, the exhaust mechanism is connected to the purification box and the gas storage box, the gas storage box is connected to a Y-shaped tube, and a temperature sensing mechanism is arranged inside the exhaust mechanism, and the temperature sensing mechanism includes a temperature sensing system and a sealing system. When there are many pins of the electronic device, the hot air acts on the memory spring to increase its contraction distance, and the gas released from the compression chamber is used to push the active piston to move, and the active piston pulls the passive piston through the second traction rope to increase the negative pressure around the exhaust box, and cooperates with the exhaust fan to suck the diffused fume, and the fume is temporarily stored in the branch pipe of the Y-shaped tube, thereby preventing the fume from diffusing and affecting other electronic devices on the circuit board and causing pollution to the surrounding environment.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated circuit welding, and in particular to a welding device for integrated circuit packaging. Background Art

[0002] An integrated circuit is a miniature electronic device or component. It uses a certain process to interconnect the transistors, resistors, capacitors, inductors and other components and wiring required in a circuit. It is made on a small piece or several small pieces of semiconductor wafers or dielectric substrates, and then packaged in a tube shell to become a miniature structure with the required circuit function. In the process of welding integrated circuits, a welding device is required.

[0003] In the prior art, in order to prevent the smoke from affecting the welding process, an exhaust device is usually arranged around the welding area to extract the smoke generated by the welding to avoid polluting the surrounding environment.

[0004] When soldering electronic devices, in order to facilitate the workers' soldering, the circuit board is usually fixed in a tilted manner toward the operating work side before soldering the electronic devices. And because different electronic devices are often connected to the circuit board, the sizes of these electronic devices are different, which makes the distances between the electronic devices different. When soldering electronic devices in the gap and there are many pins of the electronic devices, the operator's arms need to remain stable for a long time, which can easily cause the operator's arms to ache, causing the arms to shake, resulting in the solder continuing to adhere to the electric soldering iron, generating more smoke, and at this time the power of the exhaust device is constant, and the smoke that spreads instantly will drift around, causing pollution to the surrounding environment. Summary of the invention

[0005] The object of the present invention is to provide a welding device for integrated circuit packaging to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention aims to provide a welding device for integrated circuit packaging, comprising an operating table, a carrying box arranged on the upper surface of the operating table, a welding gun bracket also being arranged on the operating table, an exhaust mechanism for extracting the fume generated by welding being arranged on the side wall of the carrying box on the opposite side of the bracket, the exhaust mechanism being connected with a purification box and a gas storage box, the gas storage box being connected with a Y-shaped tube, and a temperature sensing mechanism being arranged inside the exhaust mechanism, the temperature sensing mechanism comprising a temperature sensing system and a sealing system, the fume being purified by the purification box and then transported to the gas storage boxes on both sides for storage, when the fume concentration increases, the temperature sensing system is used to drive the sealing system to release the fume stored in the gas storage box, the sealing system is used to control the gas storage box to achieve conduction with the Y-shaped tube, a power mechanism is arranged inside the Y-shaped tube, when the fume stored in the gas storage box is released by the power mechanism, the gas drives the power mechanism to cooperate with the exhaust mechanism to extract the generated fume to limit the diffusion of the fume.

[0007] As a further improvement of the present technical solution, the exhaust mechanism includes an adapter box arranged on an operating table on the opposite side of the bracket, the adapter box is connected to an exhaust box above, the exhaust box is arranged on the side wall of the operating table, the adapter box is fixedly connected to the operating table, and the bottom of the exhaust mechanism is connected to an air inlet of an exhaust fan.

[0008] As a further improvement of the present technical solution, the exhaust port of the exhaust fan is connected to a purification box, the purification box is fixed at the bottom of the operating table, filter plates are symmetrically arranged on both sides of the interior of the purification box, a first pressure relief valve is arranged on the purification box outside the filter plates on both sides, and both ends of the purification box are connected to an air pipe, the end of the air pipe away from the purification box is connected to an air storage box, and the air storage box is symmetrically arranged on the operating table on both sides of the operating table.

[0009] As a further improvement of the present technical solution, a partition is provided inside the air storage box, and the partition divides the interior of the air storage box into a preheating chamber and a compression chamber. The compression chamber is connected to the air supply pipe, and a one-way valve is provided inside the air supply pipe near the portion connected to the compression chamber, and a second pressure relief valve is provided on the partition.

[0010] As a further improvement of the present technical solution, the temperature sensing system includes a memory spring, the memory spring is fixedly connected to a fixed plate, the fixed plate is fixedly connected to the top of the inner wall of the adapter box, the memory spring is symmetrically arranged with the fixed plate as the center, and the other end of the memory spring is fixedly connected to a connecting plate, and the memory spring is used to pull the connecting plate closer to the fixed plate under the action of hot air.

[0011] As a further improvement of the present technical solution, the sealing system includes a sealing plate that fits tightly with the air storage box, and air holes are opened on the side walls of the preheating chamber and the compression chamber. A first traction rope is connected between the sealing plate and the memory spring, and the outside of the sealing plate is slidably connected to a shell fixedly connected to the air storage box, and the end of the shell is fixedly connected to a reset spring slidably connected to the first traction rope. A baffle is sleeved on the first traction rope close to the sealing plate, and the two ends of the baffle are respectively against the sealing plate and the reset spring. When the sealing plate is pulled to move by the first traction rope, the sealing plate successively opens the air holes on the side walls of the preheating chamber and the compression chamber.

[0012] As a further improvement of the technical solution, a through hole with the same diameter as the air hole on the side wall of the preheating chamber is provided on the sealing plate. Under normal conditions, the through hole and the air hole on the side wall of the preheating chamber are misaligned. A telescopic bellows is connected to the outside of the shell, and the telescopic bellows corresponds to the air hole on the side wall of the preheating chamber, and a nozzle is provided at the end of the telescopic bellows away from the shell.

[0013] As a further improvement of the technical solution, the outer shell is connected with an air pipe, which corresponds to the air holes on the side wall of the compression chamber. The end of the air pipe away from the outer shell is connected with a Y-shaped tube, and the diameter of the through hole on the sealing plate is smaller than the distance between the air holes on both sides.

[0014] As a further improvement of the present technical solution, the power mechanism includes an active piston and a passive piston which are sleeved with the Y-shaped tube, the active piston is located in the straight tube of the Y-shaped tube, the passive piston is located in the branch tube connected to the straight tube, the end of the branch tube is connected with an auxiliary tube, the auxiliary tubes on both sides are connected with the adapter box, and a second traction rope is connected between the passive piston and the active piston, a compression spring is provided at the end of the active piston away from the connection with the second traction rope, a tension spring is fixedly connected at the end of the passive piston away from the connection with the second traction rope, the other end of the tension spring is fixedly connected to the inner wall of the branch tube, and an exhaust hole is provided at the end of the straight tube, and the gas released from the compression chamber is used to push the active piston to move, so as to pull the passive piston to inhale the smoke.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the welding device for integrated circuit packaging, when there are many pins of the electronic device, the hot air acts on the memory spring to increase its contraction distance, and the gas released from the compression chamber is used to push the active piston to move. The active piston pulls the passive piston through the second traction rope to increase the negative pressure around the exhaust box, and cooperates with the exhaust fan to suck the diffused smoke. The smoke is temporarily stored in the branch pipe of the Y-shaped tube, thereby preventing the smoke from diffusing and affecting other electronic devices on the circuit board and causing pollution to the surrounding environment.

[0017] 2. In the welding device of the integrated circuit package, welding is performed in a short time, the memory spring contracts a small distance, and the first traction rope pulls the sealing plate to make the through hole coincide with the air hole on the side wall of the preheating chamber. At this time, the airflow ejected from the telescopic bellows on both sides forms convection, so as to preheat the electronic devices and circuit boards during the next welding. Preheating the circuit board can reduce the difference between its thermal expansion coefficient and the surrounding environment, and reduce the impact of thermal stress on the circuit board.

[0018] 3. In the welding device of the integrated circuit package, under the elastic action of the compression spring and the tension spring, the active piston and the passive piston both move in opposite directions, and the passive piston slowly pushes the smoke stored in the branch pipe into the adapter box. The airflow in the branch pipe slowly flows out from the exhaust pipe, restricting the movement of the active piston, so that the speed at which the active piston releases the passive piston is slowed down, thereby preventing the passive piston from instantly discharging the smoke in the branch pipe, causing the smoke reflux phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-section structure of the purification box and the adapter box of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the gas storage box of the present invention;

[0022] Figure 4 A top view of the carrier box structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the exhaust box of the present invention for extracting smoke;

[0024] Figure 6 It is a schematic diagram of the explosion structure of the housing, baffle, sealing plate and gas storage box of the present invention;

[0025] Figure 7 It is a schematic diagram of the internal structure of the Y-shaped tube of the present invention.

[0026] The meaning of each number in the figure is:

[0027] 100. operating table; 110. carrying box;

[0028] 120, exhaust mechanism; 121, exhaust fan; 122, purification box; 123, adapter box; 124, exhaust box; 125, fixing plate; 126, connecting plate; 127, auxiliary pipe; 128, gas pipe;

[0029] 130, temperature sensing mechanism; 131, memory spring; 132, sealing plate; 133, first traction rope; 134, housing; 135, baffle; 136, reset spring;

[0030] 140, gas storage box; 141, partition;

[0031] 150, telescopic bellows; 160, Y-shaped tube;

[0032] 200, power mechanism; 210, active piston; 211, second traction rope; 212, compression spring; 213, tension spring; 220, passive piston. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, a welding device for integrated circuit packaging is provided, including an operating table 100, a carrying box 110 arranged on the upper surface of the operating table 100, a welding gun bracket is also arranged on the operating table 100, and an exhaust mechanism 120 for extracting the fume generated by welding is arranged on the side wall of the carrying box 110 on the opposite side of the bracket, the exhaust mechanism 120 is connected to the purification box 122 and the gas storage box 140, the gas storage box 140 is connected to the Y-shaped tube 160, and a temperature sensing mechanism 130 is arranged inside the exhaust mechanism 120, the temperature sensing mechanism 130 includes a temperature sensing system and a sealing system, and the fume passes through the purification box 122 and the gas storage box 140. After purification, the fume in the gas box 122 is transported to the gas storage boxes 140 on both sides for storage. When the fume concentration increases, the temperature sensing system is used to drive the sealing system to release the fume stored in the gas storage box 140. The sealing system is used to control the conduction between the gas storage box 140 and the Y-shaped tube 160. A power mechanism 200 is arranged inside the Y-shaped tube 160. When the fume stored in the gas box 140 is released by the power mechanism 200, the gas drives the power mechanism 200 to cooperate with the exhaust mechanism 120 to extract the generated fume, so as to limit the diffusion of the fume and prevent the diffusion of the fume from affecting the environment around the welding area.

[0037] It can be seen that when soldering, first place the circuit board on the inclined support rod inside the carrier box 110, then insert the solder pins of the electronic component into the pre-opened small holes on the circuit board, then hold the soldering iron in one hand and the solder in the other hand to perform the soldering operation, and turn on the exhaust mechanism 120 during welding to prevent the smoke from affecting the welding line of sight.

[0038] Therefore, on the basis of the above structure, the structure of the exhaust mechanism 120 is disclosed. The exhaust mechanism 120 includes an adapter box 123 arranged on the operating table 100 on the opposite side of the bracket. The adapter box 123 is connected to an exhaust box 124 above it. The exhaust box 124 is arranged on the side wall of the operating table 100. The adapter box 123 is fixedly connected to the operating table 100, and the bottom of the exhaust mechanism 120 is connected to the air inlet of the exhaust fan 121.

[0039] In this way, when the exhaust fan 121 starts working, negative pressure is generated around the exhaust port of the exhaust box 124. Under the action of pressure, the fume generated during welding passes through the exhaust box 124 and enters the adapter box 123. Next, in order to purify the fume, the exhaust port of the exhaust fan 121 is connected to the purification box 122, and the purification box 122 is fixed at the bottom of the operating table 100. Filter plates are symmetrically arranged on both sides of the purification box 122. The first pressure relief valve is arranged on the purification box 122 outside the filter plates on both sides, and both ends of the purification box 122 are connected to the gas supply pipe 128. The end of the gas supply pipe 128 away from the purification box 122 is connected to the gas storage box 140. The gas storage box 140 is symmetrically arranged on the operating table 100 on both sides of the operating table 100. The exhaust fan 121 draws the smoke in the adapter box 123 into the purification box 122. At this time, the first pressure relief valve is in a closed state. After the smoke is purified by the filter plate, the clean air is transported from the air pipe 128 to the air storage box 140 for short-term storage, so as to provide power for the subsequent movement of the power mechanism 200.

[0040] Since the exhaust box 124 is close to the electric soldering iron during the welding process, the hot air around the electric soldering iron and the smoke generated during welding are sucked in together, and the mixed smoke forms hot air with high heat, which is transported to the gas storage box 140 for storage after purification. When the pressure of the hot air stored in the gas storage box 140 gradually increases and breaks through the first pressure relief valve, the hot air is no longer transported to the gas storage box 140, but is discharged from the purification box 122.

[0041] Combine the following Figure 3 The structure of the air storage box 140 is explained. A partition 141 is provided inside the air storage box 140. The partition 141 divides the interior of the air storage box 140 into a preheating chamber and a compression chamber. The compression chamber is connected to the air supply pipe 128. A one-way valve is provided inside the air supply pipe 128 close to the air supply pipe connected to the compression chamber, and a second pressure relief valve is provided on the partition 141. Under normal conditions, when the air supply pipe 128 transports hot air to the compression chamber, the one-way valve provided inside the air supply pipe 128 is in an open state, and during this process, the pressure in the compression chamber gradually increases. When the hot air pressure in the compression chamber breaks through the second pressure relief valve provided on the partition 141, the hot air in the compression chamber flows to the preheating chamber, increasing the pressure in the preheating chamber until the pressure between the preheating chamber and the compression chamber is balanced. At this time, return to Figure 2 As shown, the first pressure relief valves on both sides of the purification box 122 are opened to discharge the purified gas to the outside (the discharged gas is the purified gas).

[0042] It should be noted that in order to keep the hot air collected in the two chambers of the gas storage box 140 warm, a heat-insulating material (such as heat-insulating cotton) may be provided inside the gas storage box 140 to improve the heat-insulating effect.

[0043] During welding, the smoke and the hot air around the electric soldering iron pass through the temperature sensing system, causing the temperature sensing system to pull the sealing system to move. Figure 2 On the basis of the above, the temperature sensing system is disclosed, which includes a memory spring 131, which is fixedly connected to a fixing plate 125, and the fixing plate 125 is fixedly connected to the top of the inner wall of the adapter box 123. The memory spring 131 is symmetrically arranged with the fixing plate 125 as the center, and the other end of the memory spring 131 is fixedly connected to a connecting plate 126. The memory spring 131 is used to pull the connecting plate 126 closer to the fixing plate 125 under the action of hot air.

[0044] On the other hand, Figure 2 Based on and combined with Figure 6 As shown, the sealing system includes a sealing plate 132 which is tightly fitted with the air storage box 140, and air holes are opened on the side walls of the preheating chamber and the compression chamber. A first traction rope 133 is connected between the sealing plate 132 and the memory spring 131, and a shell 134 which is fixedly connected to the air storage box 140 is slidably connected to the outside of the sealing plate 132, and a return spring 136 which is slidably connected to the first traction rope 133 is fixedly connected to the end of the shell 134, and a baffle 135 is sleeved on the first traction rope 133 close to the sealing plate 132, and two ends of the baffle 135 are respectively against the sealing plate 132 and the return spring 136, and when the sealing plate 132 is pulled to move by the first traction rope 133, the sealing plate 132 opens the air holes on the side walls of the preheating chamber and the compression chamber one by one.

[0045] Among them, welding is performed in a short time, that is, when the number of pins of the electronic device is small, the soldering iron stays for a shorter time. At this time, due to the low temperature of the drawn hot air, after the hot air passes through the memory spring 131, the memory spring 131 contracts a smaller distance, that is, the memory spring 131 is heated to pull the connecting plate 126 so that the first traction rope 133 opens the pores on the side wall of the preheating chamber, while the pores on the side wall of the compression chamber are not opened. Also, because a through hole with the same diameter as the pores on the side wall of the preheating chamber is provided on the sealing plate 132, under normal conditions, the through hole and the pores on the side wall of the preheating chamber are misaligned, and the outer side of the outer shell 134 is connected to a telescopic bellows 150, and the telescopic bellows 150 corresponds to the pores on the side wall of the preheating chamber, and a nozzle is provided at the end of the telescopic bellows 150 away from the outer shell 134. In this way, combined with Figure 4 As shown, the first traction rope 133 pulls the sealing plate 132 to make the through hole coincide with the air hole on the side wall of the preheating chamber. At this time, the airflow ejected from the telescopic bellows 150 on both sides forms convection, so as to preheat the electronic components and circuit boards during the next welding. Preheating the circuit board can reduce the difference between its thermal expansion coefficient and the surrounding environment, and reduce the impact of thermal stress on the circuit board.

[0046] When there are many pins on an electronic device, the soldering iron stays on for a long time and generates more heat. At this time, the memory spring 131 contracts over a large distance. Moreover, during a long welding process, the operator's arm will feel sore, causing the arm to shake, resulting in the solder continuing to adhere to the soldering iron and generating more smoke.

[0047] At the same time, under the action of the airflow ejected from the telescopic bellows 150 on both sides, the two airflows form convection to disperse the generated smoke upward and around the circuit board. This is because the power of the exhaust fan 121 remains unchanged, the negative pressure around the exhaust box 124 is constant, and the exhaust box 124 can only absorb part of the smoke. In order to avoid the smoke from affecting the electrical components on the circuit board, combined with Figure 5 , Figure 6 and Figure 7 As shown, the power mechanism 200 disposed inside the Y-shaped tube 160 cooperates with the exhaust fan 121 to increase the air extraction volume, as shown below:

[0048] The outer shell 134 is connected with an air pipe, which corresponds to the air hole on the side wall of the compression chamber. The end of the air pipe away from the outer shell 134 is connected with a Y-shaped pipe 160. The diameter of the through hole on the sealing plate 132 is smaller than the distance between the air holes on both sides, and then the air pipe 160 is connected with the outer shell 134. Figure 2 As shown, the hot air acts on the memory spring 131 to increase its contraction distance, and the through hole on the sealing plate 132 moves from the air hole on the side wall of the preheating chamber to coincide with the air hole on the side wall of the compression chamber. At this time, the air hole on the side wall of the preheating chamber is in a closed state, and the gas in the compression chamber is instantly transported to the Y-shaped tube 160 to drive the power mechanism 200 to suck the generated smoke to prevent the smoke from spreading.

[0049] The power mechanism 200 includes an active piston 210 and a passive piston 220 which are sleeved with the Y-shaped tube 160. The active piston 210 is located in the straight tube of the Y-shaped tube 160, and the passive piston 220 is located in the branch tube connected to the straight tube. The end of the branch tube is connected to the auxiliary tube 127. The auxiliary tubes 127 on both sides are connected to the adapter box 123. A second traction rope 211 is connected between the passive piston 220 and the active piston 210. The active piston 210 is away from the second traction rope 211. A compression spring 212 is provided at one end, and a tension spring 213 is fixedly connected to the end of the passive piston 220 away from the second traction rope 211. The other end of the tension spring 213 is fixedly connected to the inner wall of the branch pipe, and an exhaust hole is provided at the end of the straight pipe. The gas released from the compression chamber is used to push the active piston 210 to move, so as to pull the passive piston 220 to suck the smoke, that is, the negative pressure in the auxiliary pipe 127 increases instantly, and the auxiliary pipe 127, the adapter box 123 and the exhaust box 124 are connected in sequence.

[0050] The negative pressure around the exhaust box 124 increases instantly, and the smoke gathers near the exhaust box 124 (combined with Figure 5 As shown in FIG. 1 ), the hot air formed by convection under the action of negative pressure flows toward the exhaust box 124 under the action of negative pressure, thereby preventing the smoke from spreading to the surroundings and affecting other electrical components on the circuit board.

[0051] It should be noted that: in the process of pushing the active piston 210, the gas is divided into two airflows, one of which is slowly discharged from the exhaust pipe below the branch pipe, and the other airflow overcomes the elastic potential energy of the compression spring 212 and the extension spring 213 to push the active piston 210 upward. In the process of the passive piston 220 moving, a connecting pipe is provided on the branch pipe near the connection between the straight pipe and the branch pipe to ensure the normal reciprocating movement of the passive piston 220.

[0052] Therefore, when the smoke concentration increases, the passive pistons 220 on both sides are used to form a negative pressure in the auxiliary pipe 127, and cooperate with the suction effect of the exhaust fan 121 to store the smoke in the branch pipe. When the baffle 135 pushes the sealing plate 132 back to its original position (that is, the electric soldering iron is separated from the welding area and the memory spring 131 is released), the air holes on the side walls of the compression chamber and the preheating chamber are closed, and the compression chamber stops supplying air to the straight pipe. At this time, under the elastic action of the compression spring 212 and the tension spring 213, the active piston 210 and the passive piston 220 both move in the opposite direction, and the passive piston 220 slowly pushes the stored smoke in the branch pipe into the adapter box 123. This is because the airflow in the branch pipe slowly flows out of the exhaust pipe, which limits the movement of the active piston 210, slowing down the speed at which the active piston 210 releases the passive piston 220, thereby preventing the passive piston 220 from instantly discharging the smoke in the branch pipe, causing the smoke to flow back.

[0053] Next, the smoke exhausted from the branch pipe is sucked by the exhaust fan 121, and after being purified, the smoke is transported to the gas storage box 140 to store the hot gas for use in the next welding.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding device for integrated circuit packaging, comprising an operating table (100), a carrying box (110) arranged on the upper surface of the operating table (100), and a welding gun bracket is also arranged on the operating table (100), characterized in that: An exhaust mechanism (120) for extracting fumes generated by welding is arranged on the side wall of the carrier box (110) on the opposite side of the bracket. The exhaust mechanism (120) is connected to the purification box (122) and the gas storage box (140). The gas storage box (140) is connected to a Y-shaped tube (160). A temperature sensing mechanism (130) is arranged inside the exhaust mechanism (120). The temperature sensing mechanism (130) includes a temperature sensing system and a sealing system. The fumes are purified by the purification box (122) and then transported to the gas storage boxes (140) on both sides. When the smoke concentration increases, the temperature sensing system is used to drive the sealing system to release the smoke stored in the gas storage box (140), and the sealing system is used to control the gas storage box (140) and the Y-shaped tube (160) to achieve conduction. A power mechanism (200) is arranged inside the Y-shaped tube (160), and when the smoke stored in the gas storage box (140) is released, the power mechanism (200) is driven by the gas to cooperate with the exhaust mechanism (120) to extract the generated smoke, so as to limit the diffusion of the smoke; The air extraction mechanism (120) comprises an adapter box (123) arranged on the operating table (100) on the opposite side of the bracket, the top of the adapter box (123) is connected to an exhaust box (124), the exhaust box (124) is arranged on the side wall of the operating table (100), the adapter box (123) is fixedly connected to the operating table (100), and the bottom of the air extraction mechanism (120) is connected to an air inlet of an exhaust fan (121); The power mechanism (200) comprises an active piston (210) and a passive piston (220) which are sleeved and matched with the Y-shaped tube (160); the active piston (210) is located in a straight tube of the Y-shaped tube (160); the passive piston (220) is located in a branch tube connected to the straight tube; the end of the branch tube is connected to an auxiliary tube (127); the auxiliary tubes (127) on both sides are connected to the adapter box (123); and a second traction rope (210) is connected between the passive piston (220) and the active piston (210). 1), a compression spring (212) is provided at one end of the active piston (210) away from the connection with the second traction rope (211), a tension spring (213) is fixedly connected to one end of the passive piston (220) away from the connection with the second traction rope (211), the other end of the tension spring (213) is fixedly connected to the inner wall of the branch pipe, and an exhaust hole is provided at the end of the straight pipe, and the gas released from the compression chamber is used to push the active piston (210) to move, so as to pull the passive piston (220) to suck the smoke.

2. The welding device for integrated circuit packaging according to claim 1, characterized in that: The exhaust port of the exhaust fan (121) is connected to the purification box (122), the purification box (122) is fixed to the bottom of the operating table (100), filter plates are symmetrically arranged on both sides of the interior of the purification box (122), and first pressure relief valves are arranged on the purification box (122) outside the filter plates on both sides, and both ends of the purification box (122) are connected to an air supply pipe (128), and the end of the air supply pipe (128) away from the purification box (122) is connected to an air storage box (140), and the air storage box (140) is symmetrically arranged on the operating table (100) on both sides of the operating table (100).

3. The welding device for integrated circuit packaging according to claim 2, characterized in that: A partition (141) is provided inside the gas storage box (140), and the partition (141) divides the inside of the gas storage box (140) into a preheating chamber and a compression chamber. The compression chamber is connected to the gas supply pipe (128), and a one-way valve is provided inside the gas supply pipe (128) close to the gas supply pipe (128) connected to the compression chamber. A second pressure relief valve is provided on the partition (141).

4. The welding device for integrated circuit packaging according to claim 1, characterized in that: The temperature sensing system comprises a memory spring (131), the memory spring (131) being fixedly connected to a fixing plate (125), the fixing plate (125) being fixedly connected to the top of the inner wall of the adapter box (123), the memory spring (131) being symmetrically arranged with the fixing plate (125) as the center, and the other end of the memory spring (131) being fixedly connected to a connecting plate (126), and the memory spring (131) being used to pull the connecting plate (126) closer to the fixing plate (125) under the action of hot air.

5. The welding device for integrated circuit packaging according to claim 4, characterized in that: The sealing system comprises a sealing plate (132) which is tightly fitted with the gas storage box (140); air holes are provided on the side walls of the preheating chamber and the compression chamber; a first traction rope (133) is connected between the sealing plate (132) and the memory spring (131); a housing (134) which is fixedly connected to the gas storage box (140) is slidably connected to the outside of the sealing plate (132); a return spring (136) which is slidably connected to the first traction rope (133) is fixedly connected to the end of the housing (134); a baffle (135) is sleeved on the first traction rope (133) near the sealing plate (132); two ends of the baffle (135) are respectively against the sealing plate (132) and the return spring (136); when the sealing plate (132) is pulled to move by the first traction rope (133), the sealing plate (132) opens the air holes on the side walls of the preheating chamber and the compression chamber one by one.

6. The welding device for integrated circuit packaging according to claim 5, characterized in that: The sealing plate (132) is provided with a through hole having the same diameter as the air hole on the side wall of the preheating chamber. Under normal conditions, the through hole and the air hole on the side wall of the preheating chamber are misaligned. The outer side of the shell (134) is connected to a telescopic bellows (150). The telescopic bellows (150) corresponds to the air hole on the side wall of the preheating chamber, and a nozzle is provided at the end of the telescopic bellows (150) away from the shell (134).

7. The welding device for integrated circuit packaging according to claim 6, characterized in that: The outer shell (134) is connected to an air pipe, the air pipe corresponds to the air holes on the side wall of the compression chamber, the end of the air pipe away from the outer shell (134) is connected to a Y-shaped tube (160), and the diameter of the through hole on the sealing plate (132) is smaller than the distance between the air holes on both sides.

Images