Low-temperature drying equipment for SMT (Surface Mount Technology)

Abstract

The utility model relates to the technical field of SMT patch production, and discloses a low-temperature drying device for SMT patches, which comprises a frame and a heat preservation fan cover, the two sides of the frame are respectively and rotatably connected with a driving roller and a driven roller, the driven roller is in transmission connection with the driving roller through a belt, and the heat preservation fan cover is arranged on the frame. The transmission rollers are driven by a driving assembly to rotate on the frame, a plurality of rubber strips are fixedly arranged on the surface of the belt, inserting grooves are formed in the surfaces of the rubber strips, and closed cabin heat preservation fan covers are fixedly arranged at the bottom end and the top end of the frame respectively. The SMT patch is inserted into the slot of the adhesive tape through one side of the frame, the SMT patch can be rapidly fixed, operation is convenient, manpower and time are saved, the adhesive tape can protect the surface of the SMT patch, scratching of the surface of the SMT patch is avoided, the driving wheel is driven by the driving assembly, the belt is driven to move at a low speed, continuous feeding can be achieved, and the production efficiency is improved. And the fixed SMT patch can be input into the heat preservation fan cover.

Description

Technical Field

[0001] The utility model relates to the technical field of SMT patch production, in particular to low-temperature drying equipment for SMT patches. Background Art

[0002] SMT is surface assembly technology, which is the most popular technology and process in the current electronic assembly industry. The surface assembly technology of electronic circuits is called surface mounting or surface mounting technology. It is a circuit assembly technology that installs pinless or short-lead surface assembly components on the surface of printed circuit boards or other substrates, and assembles them by soldering through reflow soldering or dip soldering. SMT circuit boards must be dried before being put on the machine.

[0003] Its application number is "202320614667.5" and discloses "an SMT processing drying device", which "comprises a drying box and a fixed frame, the fixed frame passes through the drying box, a transmission plate is provided on the fixed frame, a driving component for driving the transmission plate to slide is provided on the fixed frame, a plurality of groups of supporting frames are provided on the transmission plate, each of the supporting frames is provided with a clamping component for clamping the patch, the clamping component includes a group of wedge-shaped abutment blocks sliding toward each other, the two wedge-shaped abutment blocks are respectively slidably arranged on both sides of the supporting frame, the two wedge-shaped abutment blocks are connected by a transmission component, and the drying box is provided with a drying component for drying the patch." In the utility model, the SMT processing drying device is provided with a drying box, a fixing frame, a transmission plate, a driving assembly, a bearing frame, a clamping assembly, a wedge-shaped abutment block transmission assembly and a drying assembly through cooperation between the drying assembly, the drying assembly is arranged on the drying box, a plurality of bearing frames for mounting patches are arranged on the transmission plate, and at the same time, two wedge-shaped abutment blocks slide toward each other through the transmission assembly, thereby facilitating the fixing of the patches.

[0004] However, the above method still has the following defects: due to the small size of the SMT patch, the method of limiting it by the clamping component is not convenient to operate, which will reduce the placement speed and drying efficiency of the SMT patch, is more labor-intensive and time-consuming, and the surface of the SMT patch is easily scratched during the clamping process. In addition, the clamping component requires the SMT patch to be placed horizontally, which will block the air circulation at the bottom of the SMT patch and reduce the drying speed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a low-temperature drying device for SMT patches, which has the advantages of fast placement speed and less prone to surface scratches, and solves the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solution: A low-temperature drying device for SMT patching, comprising a frame and a heat preservation air hood. On both sides of the frame, a driving roller and a driven roller are respectively rotatably connected. The driven roller is in transmission connection with the driving roller through a belt, and the driving roller is driven by a driving component to rotate on the frame. A plurality of rubber strips are fixedly arranged on the surface of the belt, and slots are formed on the surface of the rubber strips. At the bottom end and the top end of the frame, closed cabins heat preservation air hoods are respectively fixedly arranged. End plates are arranged on both sides of the heat preservation air hood, a channel is arranged at the bottom end of the end plate, and a sealing cover is fixedly connected to the top end of the heat preservation air hood through screws. A ventilation component is arranged in the middle of the top end of the sealing cover.

[0007] As a preferred technical solution of the utility model, the driving component comprises a machine box, a driving wheel and a driven wheel. The machine box is fixedly connected to one side of the frame. A driving wheel is rotatably connected inside the machine box. The driving wheel is in transmission connection with the driven wheel through a V-belt, and the driven wheel is connected to one end of the driving roller.

[0008] As a preferred technical solution of the utility model, a reduction motor is fixedly installed on one side of the machine box. The output shaft of the reduction motor is connected to the driving wheel, and a maintenance cover is arranged on the top end of the machine box.

[0009] As a preferred technical solution of the utility model, a base is fixedly arranged at the bottom end of the closed cabin. A reinforcing rod is fixedly arranged at the bottom of the base. Positioning plates are fixedly arranged at the four corners of the bottom end of the base, and positioning holes are formed on the surface of the positioning plates.

[0010] As a preferred technical solution of the utility model, an installation opening is formed at the top end of the heat preservation air hood. A sealing strip is arranged on the surface of the installation opening, and the sealing cover is fixedly connected to the installation opening through screws.

[0011] As a preferred technical solution of the utility model, heat insulation plates are fixedly arranged on both sides of the bottom end of the sealing cover, and low-temperature drying electric heating wires are fixedly arranged at the bottom ends of the heat insulation plates.

[0012] As a preferred technical solution of the utility model, the ventilation component comprises an air duct and an exhaust fan. The exhaust fan is fixedly installed inside the air duct through a support rod, and a first flange and a second flange are respectively fixedly arranged at the air inlet end of the air duct.

[0013] As a preferred technical solution of the utility model, an exhaust opening is formed in the middle of the sealing cover. A sealing ring is snap-connected to the surface of the exhaust opening, and the first flange is fixedly connected to the exhaust opening through screws.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Insert the SMT patch through one side of the frame into the slot of the rubber strip, which can quickly fix the SMT patch, facilitate operation, save manpower and time, and the rubber strip can provide protection for the surface of the SMT patch, avoiding scratches on the surface of the SMT patch. By driving the driving wheel through the driving component and driving the belt to move at a low speed, continuous feeding can be achieved, and the fixed SMT patch can be input into the heat preservation air hood. After the SMT patch is dried at a low temperature in the heat preservation air hood, it can be output from the other side of the frame, realizing the flowing water drying of the SMT patch and improving the drying efficiency.

[0016] 2. The heat preservation air hood can be connected to the waste gas treatment pipeline through the air extraction component. The air extraction component can transport the water-containing waste gas inside the heat preservation air hood to the waste gas treatment pipeline. The closed cabin, heat preservation air hood and end plate can prevent the diffusion of the water-containing waste gas and protect the environment. By clamping the SMT patch through the slot, it can be erected on the rubber strip, ensuring the air circulation on both sides and improving the low-temperature drying speed. Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of the present utility model;

[0018] Figure 2 It is an exploded structural schematic diagram of the present utility model;

[0019] Figure 3 It is a structural schematic diagram of the sealing cover of the present utility model;

[0020] Figure 4 It is a structural schematic diagram of the driving component of the present utility model;

[0021] Figure 5 It is a structural schematic diagram of the rubber strip of the present utility model;

[0022] Figure 6 It is a structural schematic diagram of the air extraction component of the present utility model.

[0023] In the figure: 1. Frame; 2. Driving roller; 3. Driven roller; 4. Belt; 5. Rubber strip; 6. Slot; 7. Driving component; 701. Chassis; 702. Driving wheel; 703. Driven wheel; 704. V-belt; 705. Reduction motor; 706. Inspection cover; 8. Closed cabin; 9. Base; 10. Reinforcing rod; 11. Positioning plate; 12. Heat preservation air hood; 13. End plate; 14. Channel; 15. Installation port; 16. Sealing strip; 17. Sealing cover; 18. Sealing ring; 19. Air extraction component; 1901. Air duct; 1902. Support rod; 1903. Exhaust fan; 1904. Flange one; 1905. Flange two; 20. Heat insulation board; 21. Low-temperature drying electric heating wire; 22. Air extraction port. Detailed Embodiment

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1 to 6 , a low-temperature drying device for SMT chips, comprising a frame 1 and a heat-insulating air hood 12. Driving rollers 2 and driven rollers 3 are respectively rotatably connected to two sides of the frame 1. The driven roller 3 is in transmission connection with the driving roller 2 through a belt 4. And the driving roller 2 is driven by a driving assembly 7 to rotate on the frame 1. A plurality of rubber strips 5 are fixedly arranged on the surface of the belt 4. Slots 6 are formed on the surface of the rubber strips 5. By inserting the SMT chips into the slots 6 of the rubber strips 5, the SMT chips can be quickly fixed, which is convenient for operation, saves manpower and time, and the rubber strips 5 can provide protection for the surface of the SMT chips, avoiding scratches on the surface of the SMT chips. Sealed cabins 8 and heat-insulating air hoods 12 are respectively fixedly arranged at the bottom end and the top end of the frame 1. End plates 13 are arranged on both sides of the heat-insulating air hood 12. A channel 14 is arranged at the bottom end of the end plate 13. A sealing cover 17 is fixedly connected to the top end of the heat-insulating air hood 12 through screws. An air extraction assembly 19 is arranged in the middle of the top end of the sealing cover 17. Through the air extraction assembly 19, the water-containing waste gas inside the heat-insulating air hood 12 can be extracted;

[0026] In this embodiment, preferably, the driving assembly 7 includes a chassis 701, a driving wheel 702 and a driven wheel 703. The chassis 701 is fixedly connected to one side of the frame 1. A driving wheel 702 is rotatably connected inside the chassis 701. The driving wheel 702 is in transmission connection with the driven wheel 703 through a V-belt 704. One end of the driven wheel 703 is connected to the driving roller 2. Through the V-belt 704, the driven wheel 703 can be in transmission with the driving wheel 702. A reduction motor 705 is fixedly installed on one side of the chassis 701. The output shaft of the reduction motor 705 is connected to the driving wheel 702. Through the reduction motor 705, the driving wheel 702 can be driven to rotate. An inspection cover 706 is arranged at the top end of the chassis 701. By opening the inspection cover 706, the inside of the chassis 701 can be repaired;

[0027] In this embodiment, preferably, the exhaust assembly 19 includes an air duct 1901 and an exhaust fan 1903. The exhaust fan 1903 is fixedly installed inside the air duct 1901 through a support rod 1902. The air inlet end of the air duct 1901 is respectively fixedly provided with a first flange 1904 and a second flange 1905. A suction port 22 is formed in the middle of the sealing cover 17. A sealing ring 18 is snap-connected to the surface of the suction port 22. The first flange 1904 is fixedly connected to the suction port 22 by screws. The air duct 1901 can be fixed to the suction port 22 through the first flange 1904, and the sealing ring 18 can seal the first flange 1904. The exhaust fan 1903 inside the air duct 1901 can extract the air inside the heat preservation air hood 12;

[0028] In this embodiment, preferably, a base 9 is fixedly provided at the bottom end of the closed cabin 8, and a reinforcing rod 10 is fixedly provided at the bottom of the base 9. The closed cabin 8 and the frame 1 can be supported through the base 9, and the reinforcing rod 10 can reinforce the base 9. Positioning plates 11 are fixedly provided at the four corners of the bottom end of the base 9, and positioning holes are formed on the surfaces of the positioning plates 11. The base 9 can be fixed to the ground through the positioning holes of the positioning plates 11, which can maintain its stability and firmness;

[0029] In this embodiment, preferably, an installation opening 15 is formed at the top end of the heat preservation air hood 12, a sealing strip 16 is provided on the surface of the installation opening 15, and the sealing cover 17 is fixedly connected to the installation opening 15 by screws. The sealing cover 17 can be installed through the installation opening 15, and the sealing strip 16 can seal the sealing cover 17. Heat insulation plates 20 are fixedly provided on both sides of the bottom end of the sealing cover 17, and low-temperature drying electric heating wires 21 are fixedly provided at the bottom ends of the heat insulation plates 20. The low-temperature drying electric heating wires 21 can perform low-temperature drying on the SMT patches.

[0030] During use, first, connect the second flange 1905 of the exhaust assembly 19 to the waste gas treatment pipeline, and then drive the driving wheel 702 through the reduction motor 705 of the driving assembly 7. The driving wheel 702 drives the driven wheel 703 to rotate through the V-belt 704. The driving roller 2 drives the belt 4 to move slowly through the driven roller 3. The staff inserts the SMT patch into the slot 6 of the rubber strip 5 from one side of the frame 1. The rubber strip 5 can quickly position the SMT patch through the slot 6 and can provide protection for the surface of the SMT patch, avoiding scratches on the surface of the SMT patch. The SMT patch can stand on the rubber strip 5. The positioned SMT patch can be input into the heat preservation air hood 12 by the belt 4, and the SMT patch can be continuously loaded. Then, heat the inside of the heat preservation air hood 12 through the low-temperature drying electric heating wires 21 at the bottom end of the heat insulation plate 20 to dry the SMT patch. The temperature of the low-temperature drying electric heating wires 21 can be controlled by a temperature controller, which can ensure the low-temperature drying state of the SMT patch;

[0031] During the drying process, the air inside the heat preservation air hood 12 is extracted by the exhaust fan 1903 of the air extraction component 19, making the inside in a negative pressure state. The outside air can enter the heat preservation air hood 12 through the channel 14, and thus can carry away the water-containing waste gas. After the dried SMT patch is output from the other side of the frame 1, it can be pulled out from the slot 6. After the exhaust fan 1903 extracts the water-containing waste gas, the water-containing waste gas is transported to the waste gas treatment pipeline. The closed cabin 8 can seal the bottom end of the frame 1, and the end plate 13 can block the tops on both sides of the heat preservation air hood 12. When inputting outside air through the channel 14, it can prevent the diffusion of the water-containing waste gas. After the low-temperature drying electric heating wire 21 is damaged, by opening the sealing cover 17, it is convenient to replace and repair it. The staff loosens the screws of the fixed flange 1 1904, and the air duct 1901 can be disassembled from the air extraction port 22.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature drying device for SMT patches, comprising a frame (1) and a heat-insulating wind hood (12), characterized in that: The frame (1) is rotatably connected to a driving roller (2) and a driven roller (3) on both sides thereof; the driven roller (3) is connected to the driving roller (2) via a belt (4); and the driving roller (2) is driven by a driving assembly (7) to rotate on the frame (1); a plurality of rubber strips (5) are fixedly provided on the surface of the belt (4); a slot (6) is provided on the surface of the rubber strip (5); a closed cabin (8) and a heat-insulating hood (12) are fixedly provided at the bottom and top of the frame (1); end plates (13) are provided on both sides of the heat-insulating hood (12); a channel (14) is provided at the bottom of the end plate (13); a sealing cover (17) is fixedly provided at the top of the heat-insulating hood (12) via screws; an exhaust assembly (19) is provided at the middle of the top of the sealing cover (17).

2. The low-temperature drying equipment for SMT patches according to claim 1, characterized in that: The driving assembly (7) comprises a chassis (701), a transmission wheel (702) and a driven wheel (703); the chassis (701) is fixedly connected to one side of the frame (1); the transmission wheel (702) is rotatably connected inside the chassis (701); the transmission wheel (702) is connected to the driven wheel (703) via a V-belt (704); and the driven wheel (703) is connected to one end of a transmission roller (2).

3. The low-temperature drying equipment for SMT patches according to claim 2, characterized in that: A reduction motor (705) is fixedly mounted on one side of the chassis (701), an output shaft of the reduction motor (705) is connected to a transmission wheel (702), and an inspection cover (706) is provided at the top of the chassis (701).

4. The low-temperature drying equipment for SMT patches according to claim 1, characterized in that: A base (9) is fixedly provided at the bottom end of the closed cabin (8), a reinforcing rod (10) is fixedly provided at the bottom of the base (9), and positioning plates (11) are fixedly provided at the four corners of the bottom end of the base (9), and positioning holes are provided on the surface of the positioning plates (11).

5. The low-temperature drying equipment for SMT patches according to claim 1, characterized in that: The top of the heat-insulating wind hood (12) is provided with a mounting opening (15), the surface of the mounting opening (15) is provided with a sealing strip (16), and the sealing cover (17) is fixedly connected to the mounting opening (15) by means of screws.

6. The low-temperature drying equipment for SMT patches according to claim 1, characterized in that: Heat insulation plates (20) are fixedly provided on both sides of the bottom end of the sealing cover (17), and a low-temperature drying electric heating wire (21) is fixedly provided at the bottom end of the heat insulation plate (20).

7. The low-temperature drying equipment for SMT patches according to claim 1, characterized in that: The exhaust assembly (19) comprises an air duct (1901) and an exhaust fan (1903); the exhaust fan (1903) is fixedly mounted inside the air duct (1901) via a support rod (1902); and flange 1 (1904) and flange 2 (1905) are respectively fixedly mounted at the air inlet end of the air duct (1901).

8. The low-temperature drying equipment for SMT patches according to claim 7, characterized in that: An air exhaust port (22) is provided in the middle of the sealing cover (17), a sealing ring (18) is snap-fitted to the surface of the air exhaust port (22), and the flange 1 (1904) is fixedly connected to the air exhaust port (22) by screws.

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