CN108966633A - A kind of SMT preparation system - Google Patents

Abstract

The invention provides an SMT preparation system, which includes a rectangular forming furnace, a conveying track is provided in the middle of one side of the forming furnace, a sliding support frame is installed on the conveying track, a preheating zone and a curing zone are provided in the middle of the forming furnace, and the preheating There are preheating pipes fixed on the side walls on both sides of the area, and hot air outlets are distributed on the preheating pipes. There is a heat return port on the side wall of the forming furnace at the lower part of the curing area. The heat return port is connected with the heat return main pipe. The heat pipe is connected; the lower part of the curing area is equipped with a heater, and U-shaped support plates are fixed on the side walls on both sides of the forming furnace, and a jacking cylinder is installed on the support plate. The lifting cylinder is matched with the sliding support frame, and the air regulating component is installed in the forming furnace under the supporting plate; the structure is reasonable and the use effect is good after adopting this scheme.

Description

A kind of SMT preparation system

technical field

The invention relates to the technical field of SMT, in particular to an SMT preparation system.

Background technique

After the heater of the existing SMT reflow oven is heated, the hot air is blown vertically upwards. The disadvantage of this method is that the heating tube is generally installed in the heater. When heating, the temperature directly above the heating tube will be high. The temperature in other areas will affect the melting and soldering of the circuit board solder. At the same time, after the curing furnace completes curing, when the furnace is turned on and cooled, all the waste heat in the furnace is dissipated in the air. After the aging machine is aged, the outlet temperature is relatively high, and the heat is directly discharged into the room through the fan. Cause greater waste of heat energy.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide an SMT preparation system with reasonable structure and good use effect.

In order to achieve the above object, the technical solution provided by the present invention is: a kind of SMT preparation system, it comprises rectangular forming furnace, and the middle part of one side of forming furnace length direction is provided with conveying track, and sliding support frame is installed on the conveying track, forming The middle part of the furnace length direction is separated by a movable partition to form a preheating zone and a curing zone. There are more than 2 preheating tubes fixed on the side walls of the preheating zone, and the preheating tubes are fixed in the furnace body along the vertical direction. Hot air outlets are distributed on the preheating pipe located on one side of the furnace body. The top of the preheating pipe is connected to the heating branch pipe, the bottom of the preheating pipe is connected to the return heat branch pipe, and the heating branch pipe is connected to the external aging machine through the heating main pipe. The curing area The side wall of the lower forming furnace is provided with a heat return port, which is connected to the heat return main pipe, and the heat return main pipe is connected to the heat return branch pipe; a heater is installed at the lower part of the curing area, and the heat return port is located below the heater and above the heater U-shaped support plates are fixed on the side walls of both sides of the forming furnace, and a jacking cylinder is installed on the support plate. The jacking cylinder is located under the conveying track. An air adjustment assembly is installed in the forming furnace below the plate; the air adjustment assembly includes a fixed hinge rod, an air extraction piece, and a synchronous rod, wherein there are two fixed hinge rods, which are respectively fixed on both sides of the forming furnace in the length direction. On the wall, the fixed hinge rod is located above the heater, and the wind-extracting pieces are multi-pieces, which are evenly distributed between the two fixed hinge rods. After hinged, a hot air channel is reserved between the adjacent air-extractors. The bottom of the air-extractors is hinged with a synchronous rod. An adjusting screw is installed at one end of the length direction of the forming furnace. One end of the adjusting screw is provided with an adjusting handle, and the other end of the adjusting screw passes through The bearing is connected with one end of the synchronous rod; a suction hood is installed on the top of the forming furnace above the curing area, and the suction hood is connected with the heating branch pipe.

One side of the middle part of the forming furnace is provided with a partition groove, and a support column is fixed on the ground outside the partition groove, and a partition guide rail is fixed between the top of the support column and the top of the forming furnace, and the top of the partition is movably installed on the At the bottom of the partition guide rail, the slide seat is driven by the corresponding slide seat motor to walk on the partition guide rail.

The vertical section of the conveying track is L-shaped, and one end of the sliding support frame is provided with an n-shaped interlocking groove, which is fitted with the vertical wall of the conveying track, and the fitted sliding support frame is driven on the conveying track by a corresponding power motor walk.

After adopting the above scheme, the present invention divides the forming furnace into a preheating zone and a solidification zone through a partition, and then extracts and uses the excess heat in the solidification zone through the heat return port and the suction hood, so that the cooling can be performed quickly and the solidification zone can be cooled quickly. The waste heat can be utilized, and the waste heat at the outlet of the external aging machine is pumped to the preheating chamber through the heating main pipe to preheat the SMT to be cured in the preheating chamber, and an exhaust fan is installed on the heat return main pipe and the heating main pipe as required; The SMT is arranged on the material seat, and the material seat is placed on the sliding support frame. The sliding support frame is driven by the corresponding power to reciprocate on the conveying track. After preheating, the material seat is sent to the curing area through the sliding support frame. After the curing zone, the jacking cylinder rises to position the material seat, and the sliding support frame resets to the preheating zone for the next round of preheating. The partition plate is driven by the slide motor to separate the preheating zone and the curing zone, and then you can Carry out curing, during curing, rotate the adjusting handle, drive the synchronous rod through the adjusting screw, make the air puller rotate around the pin shaft, adjust the angle of the hot air channel, and achieve the purpose of uniform heating. This program can adjust the handle Replace it with a motor to realize automatic control. After adopting this scheme, the structure is reasonable and the use effect is good.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a structural schematic diagram of the forming furnace of the present invention.

Fig. 3 is a schematic diagram of the structure of the supporting pallet of the present invention.

Fig. 4 is a schematic structural diagram of the air regulating assembly of the present invention.

Detailed ways

The present invention will be further described below in conjunction with all accompanying drawings, preferred embodiment of the present invention is: referring to accompanying drawing 1 to accompanying drawing 4, a kind of SMT preparation system described in this embodiment comprises rectangular forming furnace 1, forming furnace 1 There is a partition groove on one side of the middle part, and a support column 2 is fixed on the ground outside the partition groove, and a partition guide rail 3 is fixed between the top of the support column 2 and the top of the forming furnace 1, and the top of the partition 4 is movably installed through a sliding seat At the bottom of the partition guide rail 3, the slide seat is driven by the corresponding slide seat motor to walk on the partition guide rail 3, and the middle part of one side of the forming furnace 1 in the length direction is provided with a conveying track 12, and a sliding support frame 13 is installed on the conveying track 12. The vertical section of the track 12 is L-shaped, and one end of the sliding support frame 13 is provided with an n-shaped slot, and the slot fits with the vertical wall of the conveying track 12. Upward travel; the middle part of the forming furnace 1 in the length direction is separated by a movable partition 4 to form a preheating zone and a curing zone, and the side walls on both sides of the preheating zone are fixed with more than 2 preheating tubes 5, and the preheating tubes 5 are The vertical direction is fixed in the furnace body, and hot air outlets are distributed on the preheating pipe 5 located on one side of the furnace body. The sub-pipe 6 is connected to the external aging machine through the heating main pipe. The side wall of the forming furnace 1 at the lower part of the curing area is provided with a heat return port. A heater 9 is installed in the lower part of the area, and the heat return port is located below the heater 9. U-shaped support plates 14 are fixed on the side walls on both sides of the forming furnace 1 above the heater 9, and a jacking cylinder is installed on the support plate 14. 15. The jacking cylinder 15 is located below the conveying track 12. The installed jacking cylinder 15 is matched with the sliding support frame 13, and the air regulating assembly is installed in the forming furnace 1 below the supporting plate 14; the air regulating assembly includes There are fixed hinge rods 16, air-drawing pieces 17, and synchronous rods 18. Among them, there are two fixed hinge rods 16, which are respectively fixed on the side walls on both sides of the forming furnace 1 in the length direction. After fixing, the fixed hinge rods 16 are located on the heater 9 At the top, the air-drawing pieces 17 are multi-pieces, which are evenly distributed between two fixed hinge bars 16. The middle parts of the two ends of the air-drawing pieces 17 are hinged with the fixed hinge bars 16 through pin shafts, and the adjacent air-drawing pieces 17 are hinged. A hot air channel is reserved between them, and the bottom of the air pulling piece 17 is hinged with a synchronous rod 18. One end of the forming furnace 1 in the length direction is equipped with an adjusting screw 19, and one end of the adjusting screw 19 is provided with an adjusting handle 11, and the other end of the adjusting screw 19 passes through the The bearing is connected with one end of the synchronous rod 18; a suction hood 10 is installed on the top of the forming furnace 1 above the solidification area, and the suction hood 10 is connected with the heating branch pipe 6.

In this embodiment, the forming furnace is divided into a preheating zone and a solidification zone through a partition, and then the excess heat during cooling of the solidification zone is extracted and used through the heat return port and the suction hood, which can quickly cool down and utilize the waste heat. The waste heat at the outlet of the external aging machine is pumped to the preheating chamber through the heating main pipe to preheat the SMT to be cured in the preheating chamber, and an exhaust fan is installed on the returning heat main pipe and the heating main pipe as required; the SMT to be processed is arranged in the material On the seat, the material seat is placed on the sliding support frame, and the sliding support frame is driven by the corresponding power to reciprocate on the conveying track. After preheating, the material seat is sent to the curing area through the sliding support frame, and it is lifted after reaching the curing area. The cylinder rises to position the material seat, and the sliding support frame resets to the preheating area for the next round of preheating. The separator is driven by the slide motor to separate the preheating area and the curing area, and then the curing can be carried out. , rotate the adjusting handle, and drive the synchronous rod through the adjusting screw, so that the air extractor rotates around the pin shaft, and adjusts the angle of the hot air channel to achieve the purpose of uniform heating. In this embodiment, the adjusting handle can be replaced with a motor to achieve Automatic control, after adopting this embodiment, the structure is reasonable and the use effect is good.

The embodiments described above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims (3)

1. a kind of SMT preparation system, it includes rectangular forming furnace (1), it is characterised in that: forming furnace (1) length direction One middle side part is equipped with delivery track (12), is equipped with slide holder (13) on delivery track (12), forming furnace (1) length direction Middle part preheating zone and curing area are separated to form by movable partition (4), it is big to be fixed with quantity on the side wall of preheating zone two sides In 2 economizer bank (5), economizer bank (5) is fixed in furnace body along the vertical direction, is distributed on the economizer bank (5) of furnace body side There is a hot-blast outlet, be in charge of (6) with heat supply at the top of economizer bank (5) and connect, economizer bank (5) bottom is connect with returning heat and be in charge of (7), heat supply It is in charge of (6) and is connect by heat supply supervisor with external weathering machine, forming furnace (1) side wall of curing area lower part, which is equipped with, returns hot mouth, returns Hot mouth connect with heat supervisor (8) is returned, and is returned heat and is responsible for (8) and connect with returning heat and be in charge of (7)；Having heaters (9) are installed in curing area lower part, It returns hot mouth to be located at below heater (9), the support supporting plate of U-shaped is fixed on forming furnace (1) two sides side wall above heater (9) (14), it supports and is equipped with jacking cylinder (15) on supporting plate (14), jacking cylinder (15) is located at below delivery track (12), after installation Jacking cylinder (15) matched with slide holder (13), support supporting plate (14) below forming furnace (1) in tune wind is installed Component；The tune wind component includes fixed toggle (16), pulls out wind piece (17), synchronizing bar (18), wherein fixed toggle (16) It is two, is separately fixed on the side wall of forming furnace (1) length direction two sides, the fixation toggle (16) after fixing is located at heater (9) top, pulling out wind piece (17) is multi-disc, is evenly distributed between two fixed toggles (16), described pulls out wind piece (17) both ends Middle part is by pin shaft and fixes toggle (16) hingedly, and hinged rear adjacent pull out is reserved with hot-air channel between wind piece (17), pulls out wind piece (17) bottom is hinged with synchronizing bar (18), and wherein one end end is equipped with adjusting screw rod (19) forming furnace (1) length direction, is adjusted Screw rod (19) one end is equipped with regulation handle (11), and adjusting screw rod (19) other end is connect by bearing with synchronizing bar (18) one end； It is equipped with suspended hood (10) at the top of forming furnace (1) above curing area, suspended hood (10) is in charge of (6) with heat supply and is connected.

2. a kind of SMT preparation system according to claim 1, it is characterised in that: side is provided with partition in the middle part of forming furnace (1) Slot is fixed with support post (2) on the ground on the outside of septalium, at the top of support post (2) at the top of forming furnace (1) between fixation Have partition guide rail (3), partition guide rail (3) bottom is movably arranged on by slide at the top of partition (4), slide is by corresponding slide electricity Machine drive is walked on partition guide rail (3).

3. a kind of SMT preparation system according to claim 1, it is characterised in that: delivery track (12) vertical section is L-shaped, Slide holder (13) one end is equipped with the caulking groove of n shape, and caulking groove erects the slide holder that wall is chimeric, after being fitted into delivery track (12) (13) it is driven by corresponding power motor and is walked on delivery track (12).