Full-automatic circulating type environment-friendly reflow soldering furnace

Abstract

The utility model discloses a full-automatic circulating type environment-friendly reflow soldering furnace which comprises a reflow soldering control system, a feeding system, a discharging system, a circulating system and an air purification treatment system, and the reflow soldering control system comprises a hearth with a hollow channel and a control unit arranged on the hearth. Wherein the feeding system and the discharging system are arranged at the two ends of the hearth respectively, a material carrying conveying belt and a plurality of independently-arranged treatment cavities are further arranged in the hearth, the treatment cavities comprise a heating cabin, a cooling cabin and an air collecting cabin, and the air collecting cabin is connected with the circulating system and the air purifying system. Full-automatic feeding, reflow soldering and discharging integrated machining is adopted, the efficiency is greatly improved, the labor cost is reduced, the economic benefit is improved, harmful gas in the heating cabin is collected, hot air is collected through an air outlet of the heating cabin and synchronously blown to the surface of a workpiece together with a flow guide fan, and the temperature of the workpiece is rapidly increased. The structure can improve the resource utilization efficiency and is higher in environmental protection property.

Description

Technical Field

[0001] The utility model relates to the technical field of reflow soldering, in particular to a full-automatic circulating environmentally friendly reflow soldering furnace. Background Art

[0002] Reflow and wave soldering are two commonly used methods for soldering components on circuit boards. Reflow involves placing an appropriate amount of solder in the correct form on the PCB soldering area before placing surface mount components. An external heat source is then used to reflow the solder to achieve the desired soldering conditions. Reflow ovens transfer heat energy through laminar flow of hot air. Using heating elements and fans, the air in the oven is continuously heated and circulated. The heated gases heat the components to achieve soldering.

[0003] However, during the production process, commercially available hot air reflow ovens typically extract exhaust gases directly from the machine through exhaust ducts. This process removes heat from the machine, reducing the air volume within the oven, which is then replenished by drawing in room-temperature air from the workshop. This requires further heating, resulting in high production costs and impacting production efficiency and quality. Furthermore, the exhaust gases cause significant environmental pollution, resulting in poor environmental performance and a low overall level of automation. Utility Model Content

[0004] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a fully automatic circulating environmentally friendly reflow soldering furnace, which can effectively solve the problems raised by the background technology.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A fully automatic circulating environmentally friendly reflow soldering furnace, comprising a reflow soldering control system, a loading system, a unloading system, a circulation system and an air purification treatment system, wherein the reflow soldering control system comprises a furnace with a hollow channel and a control unit arranged on the furnace, wherein the loading system and the unloading system are respectively arranged at both ends of the furnace, the furnace is further provided with a loading conveyor belt and a plurality of independently arranged processing chambers, the processing chambers are respectively a heating chamber, a cooling chamber and an air collecting chamber, the air collecting chambers are respectively connected to the circulation system and the air purification system, the circulation system comprises a pipeline installation chassis, a suction unit and an air supply structure connected to the suction unit, the air purification system comprises a group of air purification chambers and an air diversion structure, wherein the suction unit is connected to the air diversion structure through the air supply structure, the air diversion structure comprises a first collecting pipe and a second collecting pipe, the first collecting pipe and the second collecting pipe are both connected to the air purification chamber, and the air purification chamber is connected to the air collecting chamber through a pipe, and the air collecting chamber is respectively connected to the heating chamber and the cooling chamber pipe;

[0007] The feeding system includes a first feeding mechanism, which includes a feeding cabin and a first transfer cabin. The unloading system includes a second feeding mechanism, which includes a unloading cabin and a second transfer cabin. The feeding cabin, the unloading cabin, the first transfer cabin and the second transfer cabin are all provided with a lifting mechanism and a translation mechanism. The lifting mechanism and the translation mechanism are both connected to a control unit. The lifting mechanism and the translation mechanism both include a driving unit and a clamping unit. The first transfer cabin and the second transfer cabin are symmetrically arranged at both ends of the furnace, and the first transfer cabin and the second transfer cabin are connected to the furnace.

[0008] As a further description of the above technical solution, the heating chamber is arranged at the bottom of the furnace, and the heating chamber is provided with a hot air unit and a heating unit. The hot air unit includes a guide fan, and the heating unit includes a plurality of U-shaped heating pipes, which are horizontally arranged at the bottom of the heating chamber, and the heating pipes are arranged flush with the loading conveyor belt, and the guide fan is arranged below the heating pipes.

[0009] As a further description of the above technical solution, the cooling cabin is arranged at the top of the furnace, and the cooling cabin is provided with a refrigeration unit and a cold air unit. The refrigeration unit is connected to the cold air unit, and the cold air unit is connected to the first collecting pipe. The refrigeration unit is composed of a number of cooling pipes with built-in refrigerant, and the cooling pipe is arranged at the upper end of the cooling cabin. The cooling cabin is connected with a cold air pipe, and the cooling pipe is arranged flush with the loading conveyor belt.

[0010] As a further description of the above technical solution, the air purification system also includes two square air supply pipes, which are connected to the air purification cabin. The air purification cabin is symmetrically arranged on both sides of the furnace, and the air supply pipes are respectively connected to the first collecting pipe and the second collecting pipe. The first collecting pipe is connected to the cooling cabin, and the second collecting pipe is connected to the heating cabin. The air purification cabin is provided with a gas filter and a pressure relief valve connected to the first collecting pipe and the second collecting pipe.

[0011] As a further description of the above technical solution, the first transfer chamber and the second transfer chamber are both provided with sensor devices, and the connection between the first transfer chamber, the second transfer chamber and the furnace is also provided with a feed port and a discharge port, and the feed port and the discharge port are both arranged flush with the loading conveyor belt, and the loading conveyor belt is arranged in an S-shaped manner in the heating chamber and the cooling chamber in sequence.

[0012] As a further description of the above technical solution, the driving unit includes a screw and a motor, the clamping unit includes a conveying mechanism, the conveying mechanism includes a first conveying clamping seat and a second conveying clamping seat, the first conveying clamping seat is respectively arranged in the upper material cabin and the lower material cabin, the second conveying clamping seat is respectively arranged in the first transfer cabin and the second transfer cabin, the first conveying clamping seat moves along the Y-axis direction of the furnace, and the second conveying clamping seat moves along the X-axis direction of the furnace.

[0013] As a further description of the above technical solution, the suction unit includes a turbine fan, which is connected to the air supply structure. The air supply structure includes a main exhaust pipe and an auxiliary exhaust pipe. The main exhaust pipe is connected to the auxiliary exhaust pipe. The main exhaust pipe is communicated with the cooling cabin, and the auxiliary exhaust pipe is connected to the air purification cabin.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The fully automatic circulating environmentally friendly reflow soldering furnace of the present invention has at least one of the following beneficial effects during use:

[0016] The use of fully automatic loading, reflow soldering, and unloading integrated processing greatly improves efficiency, reduces labor costs, and increases economic benefits. Since the workpiece generates a large amount of harmful gases during the reflow process, these gases can be collected in the heating chamber and discharged after treatment, and part of the air is diverted to the refrigeration system. The cooling chamber has a first collection pipe connected to the air collection chamber, which can transport the air treated by the air treatment chamber and evenly blow the cooling air toward the workpiece through the guide fan, so that the workpiece is cooled quickly. Similarly, after the heating chamber is connected to the air collection chamber through the second collection pipe, the air collection chamber collects the harmful gases in the heating chamber, and collects the hot air through the heating chamber exhaust port and blows it synchronously with the guide fan toward the workpiece surface, so that the workpiece heats up quickly. This structure can improve resource utilization efficiency and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a fully automatic circulating environmentally friendly reflow oven of the utility model;

[0018] Figure 2 This is a schematic diagram of the first side structure of a fully automatic circulating environmentally friendly reflow oven of the utility model;

[0019] Figure 3 This is a schematic diagram of the second side structure of a fully automatic circulating environmentally friendly reflow oven of the utility model;

[0020] Figure 4 The utility model is a perspective structural diagram of a fully automatic circulating environmentally friendly reflow oven.

[0021] Numbers in the figure:

[0022] 1. Reflow control system; 101. Furnace; 102. Feed port; 103. Discharge port; 104. Loading conveyor belt; 105. Cooling unit; 106. Cooling chamber; 107. Air collecting chamber; 108. Hot air unit; 109. Heating chamber; 110. Heating unit; 2. Loading system; 201. Loading chamber; 3. Unloading system; 301. Lifting mechanism; 302. Unloading chamber; 303. Driving unit; 304. First handling clamping seat; 4. First feeding mechanism; 401. Handling mechanism; 402. A transfer cabin; 403, a second transport clamping seat; 5, a second feeding mechanism; 501, a second transfer cabin; 6, a circulation system; 601, a main exhaust pipe; 602, a secondary exhaust pipe; 603, a pipe installation chassis; 604, a suction unit; 605, an air supply structure; 7, an air purification system; 701, an air purification cabin; 702, a pressure relief valve; 703, a turbine fan; 704, a cold air duct; 705, an air diversion structure; 706, a first collecting pipe; 707, a second collecting pipe; 708, a gas filter. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0024] like Figure 1-4As shown, the utility model provides a fully automatic circulating environmentally friendly reflow soldering furnace, including a reflow soldering control system 1, a loading system 2, a unloading system 3, a circulation system 6 and an air purification treatment system 7, the reflow soldering control system 1 includes a furnace 101 with a hollow channel and a control unit arranged on the furnace 101, wherein the loading system 2 and the unloading system 3 are respectively arranged at both ends of the furnace 101, and the furnace 101 is also provided with a loading conveyor belt 104 and a plurality of independently arranged processing chambers, the processing chambers are respectively a heating chamber 109, a cooling chamber 106 and an air collecting chamber 107, the air collecting chamber 107 are respectively connected to the circulation system 6 and the air purification system, the circulation System 6 includes a pipe-mounted chassis 603, an air suction unit 604 and an air supply structure 605 connected to the air suction unit 604. The air purification system includes a group of air purification cabins 701 and an air diversion structure 705, wherein the air suction unit 604 is connected to the air diversion structure 705 through the air supply structure 605, and the air diversion structure 705 includes a first collecting pipe 706 and a second collecting pipe 707. The first collecting pipe 706 and the second collecting pipe 707 are both connected to the air purification cabin 701, and the air purification cabin 701 is connected to the air collecting cabin 107 through a pipeline, and the air collecting cabin 107 is respectively connected to the heating cabin 109 and the cooling cabin 106 through pipelines.

[0025] This embodiment can fully automatically load, reflow and unload materials in one processing unit, which greatly improves efficiency, reduces labor costs and increases economic benefits. Since the workpiece generates a large amount of harmful gases during the reflow process, the gases in the heating chamber 109 can be collected and discharged after treatment, and part of the air can be diverted to the refrigeration system. The cooling chamber 106 has a first collection pipe 706 connected to the air collection chamber 107, which can transport the air treated by the air treatment chamber and blow the cooling air evenly to the workpiece through the guide fan, so that the workpiece is cooled quickly. Similarly, after the heating chamber 109 is connected to the air collection chamber 107 through the second collection pipe 707, the air collection chamber 107 collects the harmful gases in the heating chamber 109, and collects the hot air through the exhaust port of the heating chamber 109 and blows it to the surface of the workpiece synchronously with the guide fan, so that the workpiece heats up quickly. This structure can improve resource utilization efficiency and is more environmentally friendly.

[0026] The loading system 2 includes a first feeding mechanism 4, which includes a loading cabin 201 and a first transfer cabin 402. The unloading system 3 includes a second feeding mechanism 5, which includes a unloading cabin 302 and a second transfer cabin 501. The loading cabin 201, the unloading cabin 302, the first transfer cabin 402, and the second transfer cabin 501 are all provided with a lifting mechanism 301 and a translation mechanism. The lifting mechanism 301 and the translation mechanism are both connected to a control unit. The lifting mechanism 301 and the translation mechanism both include a driving unit 303 and a clamping unit. The first transfer cabin 402 and the second transfer cabin 501 are symmetrically arranged at both ends of the furnace 101, and the first transfer cabin 402 and the second transfer cabin 501 are connected to the furnace 101.

[0027] In this embodiment, the loading system 2 sequentially transports the workpieces to be reflowed into the furnace 101 via the first transfer chamber 402. The loading chamber 201 and the unloading chamber 302 of the loading system 2 and the unloading system 3 utilize a clip-type conveying structure, and are transported by means of a lifting mechanism 301 and a translation mechanism. Both the lifting mechanism 301 and the translation mechanism are driven by screws and motors, driving the first transport clamping seat 304 and the second transport clamping seat 403 installed in the loading chamber 201, the unloading chamber, the first transfer chamber 402, and the second transfer chamber 501 to sequentially load and unload the workpieces. The system utilizes a control system with a preset program installed to control operation, resulting in high reliability. The workpieces to be reflowed sequentially pass through the heating chamber 109 and the cooling chamber 106. The conveyor belt 104 is laid in an S-shape within the furnace 101. Temperature monitoring systems are also provided within the heating chamber 109 and the cooling chamber 106, controlling the corresponding heating and cooling temperatures through the control system, resulting in a high degree of intelligence.

[0028] It is further explained that the heating chamber 109 is arranged at the bottom of the furnace 101, and the heating chamber 109 is provided with a hot air unit 108 and a heating unit 110. The hot air unit 108 includes a guide fan, and the heating unit 110 includes a plurality of U-shaped heating pipes, which are horizontally arranged at the bottom of the heating chamber 109, and the heating pipes are arranged flush with the loading conveyor belt 104, and the guide fan is arranged below the heating pipes.

[0029] It is further explained that the cooling chamber 106 is arranged at the top of the furnace 101, and the cooling chamber 106 is provided with a refrigeration unit and a cold air unit 105. The refrigeration unit is connected to the cold air unit 105, and the cold air unit 105 is connected to the first collecting pipe 706. The refrigeration unit is composed of a number of cooling pipes with built-in refrigerant. The cooling pipes are arranged at the upper end of the cooling chamber 106, and the cooling chamber 106 is connected with a cold air pipe 704, wherein the cooling pipe is arranged flush with the loading conveyor belt 104.

[0030] It is further explained that the air purification system also includes two square air supply pipes, which are connected to the air purification cabin 701. The air purification cabin 701 is symmetrically arranged on both sides of the furnace 101, and the air supply pipes are respectively connected to the first collecting pipe 706 and the second collecting pipe 707. The first collecting pipe 706 is connected to the cooling cabin 106, and the second collecting pipe 707 is connected to the heating cabin 109. The air purification cabin 701 is provided with a gas filter 708 and a pressure relief valve 702 connected to the first collecting pipe 706 and the second collecting pipe 707.

[0031] It is further explained that the first transfer chamber 402 and the second transfer chamber 501 are both provided with sensor devices, and the connection between the first transfer chamber 402, the second transfer chamber 501 and the furnace 101 is also provided with a feed port 102 and a discharge port 103, and the feed port 102 and the discharge port 103 are both arranged flush with the loading conveyor belt 104, and the loading conveyor belt 104 is sequentially passed through the heating chamber 109 and the cooling chamber 106 in an S-shaped manner.

[0032] It is further explained that the driving unit 303 includes a screw and a motor, the clamping unit includes a conveying mechanism 401, the conveying mechanism 401 includes a first conveying clamping seat 304 and a second conveying clamping seat 403, the first conveying clamping seat 304 is respectively arranged in the upper material cabin 201 and the lower material cabin 302, the second conveying clamping seat 403 is respectively arranged in the first transfer cabin 402 and the second transfer cabin 501, the first conveying clamping seat 304 moves along the Y-axis direction of the furnace 101, and the second conveying clamping seat 403 moves along the X-axis direction of the furnace 101.

[0033] It is further explained that the suction unit 604 includes a turbine fan 703, which is connected to the air supply structure 605. The air supply structure 605 includes a main exhaust pipe 601 and an auxiliary exhaust pipe 602. The main exhaust pipe 601 is connected to the auxiliary exhaust pipe 602. The main exhaust pipe 601 is communicated with the cooling cabin 106, and the auxiliary exhaust pipe 602 is connected to the air purification cabin 701.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fully automatic circulating environmentally friendly reflow oven, characterized by: The invention comprises a reflow soldering control system, a loading system, a unloading system, a circulation system and an air purification treatment system, wherein the reflow soldering control system comprises a furnace with a hollow channel and a control unit arranged on the furnace, wherein the loading system and the unloading system are respectively arranged at both ends of the furnace, and the furnace is further provided with a loading conveyor belt and a plurality of independently arranged processing chambers, wherein the processing chambers are respectively a heating chamber, a cooling chamber and an air collecting chamber, wherein the air collecting chambers are respectively connected to the circulation system and the air purification system, wherein the circulation system comprises a pipeline installation chassis, an air suction unit and an air supply structure connected to the air suction unit, wherein the air purification system comprises a group of air purification chambers and an air diversion structure, wherein the air suction unit is connected to the air diversion structure through the air supply structure, and the air diversion structure comprises a first collecting pipe and a second collecting pipe, wherein the first collecting pipe and the second collecting pipe are both connected to the air purification chamber, and the air purification chamber is connected to the air collecting chamber through a pipe, and the air collecting chamber is respectively connected to the heating chamber and the cooling chamber pipe; The feeding system includes a first feeding mechanism, which includes a feeding cabin and a first transfer cabin. The unloading system includes a second feeding mechanism, which includes a unloading cabin and a second transfer cabin. The feeding cabin, the unloading cabin, the first transfer cabin and the second transfer cabin are all provided with a lifting mechanism and a translation mechanism. The lifting mechanism and the translation mechanism are both connected to a control unit. The lifting mechanism and the translation mechanism both include a driving unit and a clamping unit. The first transfer cabin and the second transfer cabin are symmetrically arranged at both ends of the furnace, and the first transfer cabin and the second transfer cabin are connected to the furnace.

2. The fully automatic circulating environmentally friendly reflow oven according to claim 1, characterized in that: The heating chamber is arranged at the bottom of the furnace, and is provided with a hot air unit and a heating unit. The hot air unit includes a guide fan, and the heating unit includes a plurality of U-shaped heating pipes, which are horizontally arranged at the bottom of the heating chamber, and the heating pipes are arranged flush with the loading conveyor belt, and the guide fan is arranged below the heating pipes.

3. The fully automatic circulating environmentally friendly reflow oven according to claim 1, characterized in that: The cooling chamber is arranged at the top of the furnace, and is provided with a refrigeration unit and a cold air unit. The refrigeration unit is connected to the cold air unit, and the cold air unit is connected to the first collecting pipe. The refrigeration unit is composed of a plurality of cooling pipes with built-in refrigerant. The cooling chamber is connected with a cold air pipe, and the cooling pipe is arranged flush with the loading conveyor belt.

4. The fully automatic circulating environmentally friendly reflow oven according to claim 1, characterized in that: The air purification system also includes two square air supply pipes, which are connected to the air purification cabin. The air purification cabin is symmetrically arranged on both sides of the furnace, and the air supply pipes are respectively connected to the first collecting pipe and the second collecting pipe. The first collecting pipe is connected to the cooling cabin, and the second collecting pipe is connected to the heating cabin. The air purification cabin is provided with a gas filter and a pressure relief valve connected to the first collecting pipe and the second collecting pipe.

5. The fully automatic circulating environmentally friendly reflow oven according to claim 1, characterized in that: The first transfer chamber and the second transfer chamber are both provided with sensor devices, and the connection between the first transfer chamber, the second transfer chamber and the furnace is also provided with a feed port and a discharge port. The feed port and the discharge port are both arranged flush with the loading conveyor belt, and the loading conveyor belt is arranged in an S-shaped manner in the heating chamber and the cooling chamber in sequence.

6. The fully automatic circulating environmentally friendly reflow oven according to claim 1, characterized in that: The driving unit includes a screw and a motor, the clamping unit includes a conveying mechanism, the conveying mechanism includes a first conveying clamping seat and a second conveying clamping seat, the first conveying clamping seat is respectively arranged in the upper material cabin and the lower material cabin, the second conveying clamping seat is respectively arranged in the first transfer cabin and the second transfer cabin, the first conveying clamping seat moves along the Y-axis direction of the furnace, and the second conveying clamping seat moves along the X-axis direction of the furnace.

7. The fully automatic circulating environmentally friendly reflow oven according to claim 1, characterized in that: The suction unit includes a turbine fan, which is connected to the air supply structure. The air supply structure includes a main exhaust pipe and an auxiliary exhaust pipe. The main exhaust pipe is connected to the auxiliary exhaust pipe. The main exhaust pipe is communicated with the cooling cabin, and the auxiliary exhaust pipe is connected to the air purification cabin.

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