High-temperature reflow soldering device for SMD (Surface Mount Device) electronic component

Abstract

The utility model belongs to the technical field of electronic manufacturing, and discloses a high-temperature reflow soldering device for surface-mounted electronic components, which comprises a furnace body and an upper cover, a conveying belt is arranged in the furnace body, a circuit board is arranged on the conveying belt, sliding rails are symmetrically and fixedly mounted on the inner wall of the furnace body, and the upper cover is arranged on the furnace body. Electric sliding blocks are slidably mounted in the two sliding rails correspondingly, first supporting rods are rotatably mounted in the two electric sliding blocks correspondingly, push plates are movably mounted at one ends of the two first supporting rods correspondingly, and rotating shafts are slidably mounted in the two push plates correspondingly; fixing blocks are symmetrically and fixedly installed at the positions, located on the edge portions of one sides of the sliding rails, of the inner wall of the furnace body, the clamping structures at the two ends move towards the middle of the conveying belt during welding machining, the pushing device can accurately push circuit boards to the middle position, it is ensured that each circuit board is aligned with the preset welding position, and the welding efficiency is improved. Welding defects such as pseudo soldering and solder skips are effectively avoided, and the welding quality and the product percent of pass are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electronic manufacturing technical field especially relates to a high temperature reflow soldering device of paster electronic component. BACKGROUND

[0002] Nowadays electronic product is developing towards miniaturization, light weight and high performance, and the reliability and soldering quality of paster electronic component as the key link of connecting electronic component is very important, and high temperature reflow soldering is the main process which is widely used in paster component soldering at present, and its characteristic is that through controlling temperature cycle, the solder is melted and reliable soldering connection is automatically formed according to the lead shape and pad geometry of component.

[0003] The existing reflow soldering equipment directly places the circuit board on the conveying assembly in the reflow soldering equipment when soldering the circuit board, and the circuit board and the component pin in the upper cover cannot be soldered due to the position deviation of the circuit board during the transmission of the circuit board, thereby causing the problem of missing welding. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high temperature reflow soldering device of paster electronic component, including: furnace body and upper cover, the inside of furnace body is provided with conveying belt, be provided with circuit board on the conveying belt, the furnace body inner wall symmetry fixed mounting has the slide rail, two slide rails inside all slidingly installed electric sliding block, two electric sliding block inside all rotatablely installed one support rod, two one support rod one end all movably installed push board, two push board inside all slidingly installed pivot, the furnace body inner wall all symmetry fixed mounting has fixed block, two fixed block top all rotatablely installed two support rods, two two support rods all rotatablely installed to pivot outer surface, two pivot outer surface all sleeve joint installation has piston push rod, two piston push rod outer surface one end sleeve joint installation has the barrel, two barrel all fixedly installed in push board top, two barrel outer surface one end all fixedly installed have the air pipe.

[0005] A high temperature reflow soldering device of paster electronic component, including: furnace body and upper cover, the inside of furnace body is provided with conveying belt, be provided with circuit board on the conveying belt, the furnace body inner wall symmetry fixed mounting has the slide rail, two slide rails inside all slidingly installed electric sliding block, two electric sliding block inside all rotatablely installed one support rod, two one support rod one end all movably installed push board, two push board inside all slidingly installed pivot, the furnace body inner wall all symmetry fixed mounting has fixed block, two fixed block top all rotatablely installed two support rods, two two support rods all rotatablely installed to pivot outer surface, two pivot outer surface all sleeve joint installation has piston push rod, two piston push rod outer surface one end sleeve joint installation has the barrel, two barrel all fixedly installed in push board top, two barrel outer surface one end all fixedly installed have the air pipe.

[0006] As the preferred technical scheme, the upper cover is fixedly installed with an isolation belt on one side inner wall, a slide is fixedly installed on the top end of the upper cover inner wall, a sliding seat is slidably installed in the slide, a cylindrical barrel is fixedly installed on one side of the bottom end of the sliding seat, an electric telescopic rod is fixedly installed on the other side of the bottom end of the sliding seat, the movable end of the electric telescopic rod is located in the cylindrical barrel, a rubber plug is fixedly installed on the movable end of the electric telescopic rod, and a gas outlet is formed at one end of the outer surface of the cylindrical barrel.

[0007] As the preferred technical scheme, the upper cover is fixedly installed with an isolation belt on one side inner wall, a slide is fixedly installed on the top end of the upper cover inner wall, a sliding seat is slidably installed in the slide, a cylindrical barrel is fixedly installed on one side of the bottom end of the sliding seat, an electric telescopic rod is fixedly installed on the other side of the bottom end of the sliding seat, the movable end of the electric telescopic rod is located in the cylindrical barrel, a rubber plug is fixedly installed on the movable end of the electric telescopic rod, and a gas outlet is formed at one end of the outer surface of the cylindrical barrel.

[0008] As the preferred technical scheme, the upper cover is fixedly installed with an isolation belt on one side inner wall, a slide is fixedly installed on the top end of the upper cover inner wall, a sliding seat is slidably installed in the slide, a cylindrical barrel is fixedly installed on one side of the bottom end of the sliding seat, an electric telescopic rod is fixedly installed on the other side of the bottom end of the sliding seat, the movable end of the electric telescopic rod is located in the cylindrical barrel, a rubber plug is fixedly installed on the movable end of the electric telescopic rod, and a gas outlet is formed at one end of the outer surface of the cylindrical barrel.

[0009] As the preferred technical scheme, the upper cover is fixedly installed with an isolation belt on one side inner wall, a slide is fixedly installed on the top end of the upper cover inner wall, a sliding seat is slidably installed in the slide, a cylindrical barrel is fixedly installed on one side of the bottom end of the sliding seat, an electric telescopic rod is fixedly installed on the other side of the bottom end of the sliding seat, the movable end of the electric telescopic rod is located in the cylindrical barrel, a rubber plug is fixedly installed on the movable end of the electric telescopic rod, and a gas outlet is formed at one end of the outer surface of the cylindrical barrel.

[0010] As the preferred technical scheme, the upper cover is fixedly installed with an isolation belt on one side inner wall, a slide is fixedly installed on the top end of the upper cover inner wall, a sliding seat is slidably installed in the slide, a cylindrical barrel is fixedly installed on one side of the bottom end of the sliding seat, an electric telescopic rod is fixedly installed on the other side of the bottom end of the sliding seat, the movable end of the electric telescopic rod is located in the cylindrical barrel, a rubber plug is fixedly installed on the movable end of the electric telescopic rod, and a gas outlet is formed at one end of the outer surface of the cylindrical barrel.

[0011] The beneficial effects of the utility model are as follows:

[0012] (1) the clamping structure at both ends moves to the middle part of the conveying belt during welding processing, the pushing device can accurately push the circuit board to the middle part, ensures that each circuit board is aligned with the preset welding position, effectively avoids welding defects such as virtual welding and missed welding, and improves welding quality and product qualification rate.

[0013] (2) the rubber plug is moved by the electric telescopic rod, air in the cylindrical barrel is extruded, air is blown from the air outlet to remove dust on the circuit board below, ensures that the solder paste can be distributed on the circuit board, forms a stable and firm welding point, and avoids problems such as virtual welding, flying welding and bridge welding. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 The structure schematic diagram of a high-temperature reflow soldering device for a patch electronic component in embodiment 1 is shown.

[0015] Fig. 2 The installation structure schematic diagram of a push plate in embodiment 1 is shown.

[0016] Fig. 3 The installation structure schematic diagram of a barrel in embodiment 1 is shown.

[0017] Fig. 4 The installation structure schematic diagram of an electric telescopic rod in embodiment 1 is shown.

[0018] In the diagram: 1. Furnace body; 2. Top cover; 3. Conveyor belt; 4. Circuit board; 5. Slide rail; 6. Electric slider; 7. Support rod No. 1; 8. Fixing block; 9. Support rod No. 2; 10. Push plate; 11. Rotating shaft; 12. Isolation belt; 13. Slide track; 14. Slide seat; 15. Electric telescopic rod; 16. Cylindrical tube; 17. Air nozzle; 18. Cylinder body; 19. Piston push rod; 20. Air outlet pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0020] Example 1

[0021] This utility model provides a high-temperature reflow soldering device for surface mount electronic components, such as... Figs. 1 to 4 As shown, the furnace includes a furnace body 1 and a top cover 2. A preheating device, a heating device, and a cooling device are sequentially installed inside the top cover 2. A central control panel is installed on the side of the top cover 2. The circuit board 4 is controlled by the central control panel to solder surface-mount electronic components in a high-temperature reflow soldering device. This is existing technology and will not be elaborated further. A conveyor belt 3 is installed inside the furnace body 1, and the circuit board 4 is mounted on the conveyor belt 3. Slide rails 5 are symmetrically fixedly installed on the inner wall of the furnace body 1. Electric sliders 6 are slidably installed inside both slide rails 5. The slide rails 5 and electric sliders 6 are existing electrically controlled slide rail structures, enabling linear movement of the electric sliders 6 on the slide rails 5. Both electric sliders 6... A first support rod 7 is rotatably installed. Push plates 10 are movably installed at one end of each of the two first support rods 7. Rotating shafts 11 are slidably installed inside each of the two push plates 10. Fixing blocks 8 are symmetrically fixed at one side of the slide rail 5 on the inner wall of the furnace body 1. Second support rods 9 are rotatably installed at the top of each of the two fixing blocks 8. The two second support rods 9 are rotatably installed on the outer surface of the rotating shafts 11. Piston push rods 19 are sleeved on the outer surface of each of the two rotating shafts 11. A cylinder 18 is sleeved on one end of the outer surface of each of the two piston push rods 19. The two cylinders 18 are fixedly installed on the top of the push plates 10. An exhaust pipe 20 is fixedly installed on one end of the outer surface of each of the two cylinders 18.

[0022] like Figs. 1 to 4As shown, the inner wall of one side of the upper cover 2 is fixedly installed with an isolation belt 12, and the top end of the inner wall of the upper cover 2 is fixedly installed with a slide 13. The slide 13 is slidably installed with a sliding seat 14. The bottom end of one side of the sliding seat 14 is fixedly installed with a cylindrical barrel 16, and the bottom end of the other side of the sliding seat 14 is fixedly installed with an electric telescopic rod 15. The movable end of the electric telescopic rod 15 is located inside the cylindrical barrel 16, and the movable end of the electric telescopic rod 15 is fixedly installed with a rubber plug. An air outlet hole is formed at one end of the outer surface of the cylindrical barrel 16. Through the movement of the electric telescopic rod 15, the movable end of the electric telescopic rod 15 drives the rubber plug to move transversely in the cylindrical barrel 16. After the air in the cylindrical barrel 16 is extruded, it flows out of the air outlet hole, cleaning the dust on the surface of the circuit board 4. When the circuit board 4 is welded, the solder paste can be distributed on the circuit board 4, forming a stable and firm welding point, avoiding problems such as virtual welding, flying welding, and bridge welding.

[0023] As shown in Figs. 1 to 4 , one end of the outer surface of the cylindrical barrel 16 is fixedly installed with an air nozzle 17 outside the air outlet hole. The air nozzle 17 guides the gas to blow towards the surface of the circuit board 4, so that the gas is more concentrated on the surface of the circuit board 4 when it is sprayed.

[0024] As shown in Figs. 1 to 4 , a plurality of connecting columns are fixedly installed on one side of the slide 13, and a column clamp is movably installed on one side of the sliding seat 14. By sleeving the column clamp on the connecting column, the position of the sliding seat 14 is fixed, preventing the sliding seat 14 from shaking when the electric push rod moves.

[0025] As shown in Fig. 2 and 3 , the furnace body 1 and the slide rail 5 are fixed by screws. By connecting the furnace body 1 and the slide rail 5 with screws, the connection between the furnace body 1 and the slide rail 5 is more stable, and the furnace body 1 and the slide rail 5 are not easy to loosen.

[0026] As shown in Fig. 2 and 3 , rotating grooves are formed at the intersection positions of the first support rod 7 and the second support rod 9. The rotating grooves are formed to make the first support rod 7 and the second support rod 9 cross and stack together at the same height, so that one end of the first support rod 7 and one end of the second support rod 9 can be connected and fixed with the top end of the push plate 10.

[0027] Working principle: first move the slide 14, so that the air nozzle 17 outlet is directly above the circuit board 4 position, and then move the column clamp to the top, so that the column clamp sleeve connection column, so that the slide 14 position fixed, solve the problem of electric push rod movement driven slide 14 shaking, then start the high temperature reflow soldering device of patch electronic components, conveyor belt 3 drive circuit board 4 forward, when the circuit board 4 into the furnace 1 inside, so that the electric telescopic rod 15 drive rubber plug to the inside of the cylinder 16, so that the air in the cylinder 16 is extruded from the air outlet, air nozzle 17 guide gas to the surface of the circuit board 4, clean the surface of the circuit board 4, so that the solder paste can be distributed on the circuit board 4, form a stable and firm welding point, avoid the problem of virtual welding, flying welding, bridge welding, etc., at the same time, the sliding block in the electric sliding block 6 to the fixed block 8 direction sliding, electric sliding block 6 push a support rod 7 to the fixed block 8, while the first support rod 7 in the electric sliding block 6 rotates, because the first support rod 7 and the second support rod 9 gradually close to one end, let the first support rod 7 and the second support rod 9 between the angle gradually smaller, so that the first support rod 7 and the second support rod 9 in the vertical direction on the projection height is higher, so that the two push plate 10 close, at the same time, the other end of the first support rod 7 and the second support rod 9 gradually close to, so that the second support rod 9 drive shaft 11 in the push plate 10 sliding to the cylinder 18, the piston push rod 19 connected with the shaft 11 to the cylinder 18 inside, extruding the air in the cylinder 18, so that the air from the air outlet pipe 20, from the circuit board 4 in the middle to both ends of the air blowing, the air outlet pipe on the surface of the circuit board 4 side edge dust blowing, solve the problem of dust accumulation on the surface of the circuit board 4 side edge by air nozzle 17 blowing, then the circuit board 4 into the two push plate 10 in the middle, push plate 10 to push the circuit board 4, prevent the circuit board 4 position deviation, the circuit board 4 in the middle of the conveyor belt 3, after the circuit board 4 push, the electric sliding block 6 reverse direction sliding, so that the first support rod 7 and the second support rod 9 in the vertical direction on the projection height is lower, so that the push plate 10 and the circuit board 4 separate, the conveyor belt 3 drive circuit board 4 continue to move to the inside of the furnace 1, in turn through the preheating device, heating device and cooling device, the circuit board 4 welding is completed.

[0028] The above examples are only used to illustrate the technical scheme of the present application, not to limit it.

Claims

1. A high-temperature reflow soldering apparatus for surface mount electronic components, characterized in that, include: The furnace body (1) and the top cover (2) are provided. A conveyor belt (3) is provided inside the furnace body (1). A circuit board (4) is provided on the conveyor belt (3). Slide rails (5) are symmetrically fixedly installed on the inner wall of the furnace body (1). Electric sliders (6) are slidably installed inside the two slide rails (5). A first support rod (7) is rotatably installed inside the two electric sliders (6). A push plate (10) is movably installed at one end of the two first support rods (7). A rotating shaft (11) is slidably installed inside the two push plates (10). The furnace body (1) The inner walls are symmetrically fixed with fixing blocks (8), and the top of each of the two fixing blocks (8) is rotatably mounted with a second support rod (9). The two second support rods (9) are rotatably mounted on the outer surface of the rotating shaft (11). The outer surfaces of the two rotating shafts (11) are sleeved with piston push rods (19). One end of the outer surface of the two piston push rods (19) is sleeved with a cylinder (18). The two cylinders (18) are fixedly mounted on the top of the push plate (10). One end of the outer surface of the two cylinders (18) is fixedly mounted with an air outlet pipe (20).

2. The high-temperature reflow soldering apparatus for surface mount electronic components according to claim 1, characterized in that, An insulating strip (12) is fixedly installed on one side of the inner wall of the upper cover (2). A slide rail (13) is fixedly installed at the top of the inner wall of the upper cover (2). A slide seat (14) is slidably installed inside the slide rail (13). A cylindrical tube (16) is fixedly installed on one side of the bottom end of the slide seat (14). An electric telescopic rod (15) is fixedly installed on the other side of the bottom end of the slide seat (14). The movable end of the electric telescopic rod (15) is located inside the cylindrical tube (16). A rubber plug is fixedly installed on the movable end of the electric telescopic rod (15). An air vent is opened at one end of the outer surface of the cylindrical tube (16).

3. The high-temperature reflow soldering apparatus for surface mount electronic components according to claim 2, characterized in that, An air nozzle (17) is fixedly installed on one end of the outer surface of the cylindrical tube (16) on the outer surface of the air outlet.

4. The high-temperature reflow soldering apparatus for surface mount electronic components according to claim 2, characterized in that, Several connecting columns are fixedly installed on one side of the slide (13), and column hoops are movably installed on one side of the slide block (14).

5. The high-temperature reflow soldering apparatus for surface mount electronic components according to claim 1, characterized in that, The furnace body (1) is fixed to the slide rail (5) by screws.

6. The high-temperature reflow soldering apparatus for surface mount electronic components according to claim 1, characterized in that, Rotation grooves are provided at the intersection of the first support rod (7) and the second support rod (9).

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