Chain type sealing furnace with multi-temperature zone structure

Abstract

The utility model discloses a kind of chain type packaging furnace with multi-temperature zone structure, it is related to the technical field of electronic component and semiconductor packaging equipment, including furnace frame, conveying mechanism and heating mechanism, conveying mechanism includes conveyor belt, and conveyor belt cooperation is set in the top of furnace frame, heating mechanism is provided with several and is horizontally arranged on furnace frame, heating mechanism includes heat insulating box, support frame, movable sliding plate, heating assembly and adjusting assembly, heat insulating box is fixedly connected with furnace frame, support frame is fixedly connected with heat insulating box, movable sliding plate is slidably connected with support frame, heating assembly is fixedly set in the bottom of movable sliding plate, and located the directly above of conveyor belt, the spacing of heating assembly and conveyor belt can be flexibly adjusted by adjusting assembly, for thin workpiece, increase spacing to avoid overheating carbonization, for thick workpiece, reduce spacing to improve heating efficiency, substantially improve the adaptation ability to different specifications, thickness workpiece, effectively solve the problem of fixed spacing of traditional heating assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic components and semiconductor packaging equipment, specifically to a chain packaging furnace with a multi-temperature zone structure. Background Technology

[0002] Chain packaging furnaces, as key equipment in the electronics manufacturing industry, are widely used in the packaging processes of electronic components and semiconductor devices. They utilize a chain conveyor mechanism to continuously transport workpieces through a feeding zone, heating zone, cooling zone, and discharging zone, completing packaging-related processes such as heating, curing, welding, or sealing within the furnace. A typical chain packaging furnace consists of a feeding zone, heating zone, cooling zone, discharging zone, and a chain conveyor system (such as a stainless steel chain or conveyor belt).

[0003] To meet the process requirements of different packaging materials, chain packaging furnaces typically employ a multi-temperature zone design. Each zone can have its temperature parameters (ranging from room temperature to several hundred degrees Celsius) set independently according to the requirements of processes such as curing and soldering. Workpieces undergo preheating, high-temperature treatment, and cooling / shaping in different temperature zones along the conveyor chain, ensuring that packaging materials (such as epoxy resin and solder) can be fully cured or stably soldered according to the preset process, thereby guaranteeing the packaging quality of electronic components and semiconductor devices.

[0004] However, existing chain packaging furnaces with multi-temperature zones mostly use fixed resistance wires in their heating components, and the spacing between the heating components and electronic components and semiconductor devices cannot be adjusted. This fixed structure is difficult to adapt to workpieces of different specifications and thicknesses: for thin workpieces, too close a spacing can easily lead to local overheating, causing carbonization and cracking of the packaging material; for thick workpieces, too far a spacing will reduce heating efficiency, prolong curing time, and even cause insufficient packaging, affecting product performance stability and limiting the equipment's adaptability to diverse workpieces. Utility Model Content

[0005] This invention provides a chain packaging furnace with a multi-temperature zone structure, which can solve the problem in the prior art that the spacing between the heating components and electronic components and semiconductor devices cannot be adjusted, making it difficult to adapt to workpieces of different specifications and thicknesses.

[0006] A chain-type packaging furnace with a multi-temperature zone structure includes a furnace frame, a conveying mechanism, and a heating mechanism. The conveying mechanism includes a conveyor belt, which is fitted onto the top of the furnace frame. Several heating mechanisms are arranged horizontally on the furnace frame. Each heating mechanism includes a heat insulation box, a support frame, a movable slide plate, a heating component, and an adjusting component. The heat insulation box is fixedly connected to the furnace frame. The heat insulation box has an inlet and an outlet on both sides. The support frame is fixedly connected to the heat insulation box. The movable slide plate is slidably connected to the support frame. The heating component is fixedly installed at the bottom of the movable slide plate and directly above the conveyor belt. The adjusting component is used to adjust the distance between the heating component and the conveyor belt.

[0007] According to one embodiment of this utility model, the adjusting assembly includes a threaded rod, the support frame has a vertically oriented sliding groove, the movable slide plate is slidably connected to the sliding groove, the threaded rod is rotatably disposed within the sliding groove, and the movable slide plate has a threaded hole that mates with the threaded rod. The adjusting assembly also includes an adjusting motor, which is fixedly disposed on the top of the heat insulation box, and the output end of the adjusting motor passes through the heat insulation box and is coaxially fixedly connected to the threaded rod.

[0008] According to one embodiment of this utility model, the adjusting assembly includes a threaded rod, the support frame has a vertically oriented sliding groove, the movable slide plate is slidably connected to the sliding groove, the threaded rod is rotatably disposed within the sliding groove, and the movable slide plate has a threaded hole that mates with the threaded rod. The adjusting assembly also includes an adjusting handwheel, which is rotatably connected to the top of the heat insulation box, and the adjusting handwheel is coaxially fixedly connected to the threaded rod.

[0009] According to one embodiment of the present invention, the heating mechanism further includes a slide plate, the furnace frame has a slot for sliding cooperation with the slide plate, the slide plate is fixedly connected to a movable sliding plate, and the side of the slide plate is provided with longitudinally arranged scale strips. The heating mechanism also includes a laser rangefinder sensor, a display, and a control terminal. The laser rangefinder sensor is fixedly connected to the furnace frame and located directly below the slide plate, and both the display and the laser rangefinder sensor are electrically connected to the control terminal.

[0010] According to one embodiment of this utility model, the heating mechanism further includes an insulation door, of which two insulation doors are provided and are slidably connected to the inlet and outlet in the vertical direction, respectively. The heating mechanism also includes a rack, a drive shaft, a driven gear, a driven bevel gear, a driving bevel gear, and a drive motor. The rack is vertically fixedly connected to the insulation door, the drive shaft is horizontally rotatably connected to the insulation box, the driven gear and the driven bevel gear are coaxially fixedly connected to both ends of the drive shaft, the drive motor is fixedly connected to the insulation box, the driving bevel gear is coaxially fixedly connected to the output end of the drive motor, the rack meshes with the driven gear, and the driven bevel gear meshes with the driving bevel gear.

[0011] Specifically, the heating component includes a resistance wire, which is fixedly mounted on the bottom of the movable slide plate and located directly above the conveyor belt. The conveying mechanism includes a variable frequency motor, a chain, a drive sprocket, a driven sprocket, and transmission rollers. The drive sprocket is driven by the variable frequency motor, the driven sprocket is connected to the drive sprocket via the chain, and there are two transmission rollers, which are coaxially fixedly connected to the drive sprocket and the driven sprocket respectively. The conveyor belt is positioned between the two transmission rollers.

[0012] The advantages of this utility model compared to the prior art are: The spacing between the heating elements and the conveyor belt can be flexibly adjusted by regulating the components. For thin workpieces, a larger spacing prevents overheating and carbonization, while a smaller spacing improves heating efficiency for thicker workpieces. This significantly enhances the adaptability to workpieces of different specifications and thicknesses, effectively solving the problem of fixed spacing in traditional heating elements. Multiple horizontally arranged heating mechanisms form independent temperature zones, which, combined with an insulation box, reduce heat crosstalk, ensuring temperature stability in each zone and improving packaging quality. Simultaneously, the combination of continuous conveying and adjustable heating improves production efficiency and product qualification rate, broadening the equipment's application range.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional structural diagram of a chain-type packaging furnace with a multi-temperature zone structure.

[0015] Figure 2 This is a three-dimensional structural diagram of the heat insulation box in this utility model.

[0016] Figure 3This is a three-dimensional structural diagram of the heating mechanism in this utility model.

[0017] Figure 4 This is a three-dimensional structural cross-sectional view of the heating mechanism in this utility model.

[0018] Figure 5 This is a three-dimensional structural cross-sectional view of the conveying mechanism in this utility model.

[0019] The reference numerals in the figures include: 1. Furnace frame; 2. Conveying mechanism; 3. Heating mechanism; 4. Conveyor belt; 5. Insulation box; 6. Support frame; 7. Movable slide plate; 8. Heating component; 9. Adjusting component; 10. Threaded rod; 11. Adjusting motor; 12. Insert plate; 13. Slot; 14. Scale bar; 15. Laser rangefinder sensor; 16. Insulation door; 17. Rack; 18. Drive shaft; 19. Driven gear; 20. Driven bevel gear; 21. Driven bevel gear; 22. Drive motor; 23. Resistance wire. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0021] like Figures 1 to 5 As shown, a chain-type packaging furnace with a multi-temperature zone structure includes a furnace frame 1, a conveying mechanism 2, and a heating mechanism 3. The conveying mechanism 2 includes a conveyor belt 4, which is fitted onto the top of the furnace frame 1. Several heating mechanisms 3 are arranged horizontally on the furnace frame 1. Each heating mechanism 3 includes a heat insulation box 5, a support frame 6, a movable slide plate 7, a heating component 8, and an adjusting component 9. The heat insulation box 5 is fixedly connected to the furnace frame 1. The heat insulation box 5 has an inlet and an outlet on its two sides. The support frame 6 is fixedly connected to the heat insulation box 5. The movable slide plate 7 is slidably connected to the support frame 6. The heating component 8 is fixedly installed at the bottom of the movable slide plate 7 and located directly above the conveyor belt 4. The adjusting component 9 is used to adjust the distance between the heating component 8 and the conveyor belt 4.

[0022] Specifically, the heating component 8 includes a resistance wire 23, which is fixedly installed at the bottom of the movable slide plate 7 and directly above the conveyor belt 4. The conveying mechanism 2 includes a variable frequency motor, a chain, a drive sprocket, a driven sprocket, and transmission rollers. The drive sprocket is driven by the variable frequency motor, and the driven sprocket is connected to the drive sprocket via the chain. Two transmission rollers are provided and are coaxially fixedly connected to the drive sprocket and the driven sprocket respectively. The conveyor belt 4 is positioned between the two transmission rollers. The variable frequency motor drives the drive sprocket to rotate, which in turn drives the driven sprocket and transmission rollers to rotate via the chain, causing the conveyor belt 4 to transport the workpieces sequentially through the heat insulation boxes 5 of each heating mechanism 3. In the heating mechanism 3, the adjusting component 9 adjusts the position of the movable slide plate 7 to change the distance between the resistance wire 23 and the conveyor belt 4. The resistance wire 23 heats the workpiece to complete the packaging process, and the heat insulation box 5 ensures independent and stable temperature zones. By adjusting the spacing of the resistance wires 23 to adapt to different workpieces, it avoids overheating of thin parts and insufficient heating of thick parts. Combined with the multi-temperature zone design and the heat insulation box 5, it improves the packaging quality and efficiency, solves the problem of poor compatibility of traditional equipment, and broadens the application range.

[0023] This chain-type encapsulation furnace with a multi-temperature zone structure continuously transports workpieces to various heating mechanisms 3 via a conveyor belt 4 of the conveying mechanism 2. The workpieces pass sequentially through the inlet and outlet of the heat-insulating box 5. In each heating mechanism 3, the adjusting component 9 can drive the movable slide plate 7 to slide along the support frame 6, thereby adjusting the distance between the heating component 8 fixed at the bottom of the movable slide plate 7 and the conveyor belt 4 to accommodate workpieces of different specifications and thicknesses. The heat-insulating box 5 can reduce heat crosstalk between the heating mechanisms 3, ensuring temperature stability in each temperature zone. The heating component 8 heats the workpiece at the set temperature to achieve processes such as curing and welding of the encapsulation material. Finally, the encapsulated workpiece is output with the conveyor belt 4.

[0024] The spacing between the heating element 8 and the conveyor belt 4 can be flexibly adjusted by adjusting component 9. For thin workpieces, a larger spacing prevents overheating and carbonization, while a smaller spacing improves heating efficiency for thicker workpieces. This significantly enhances the adaptability to workpieces of different specifications and thicknesses, effectively solving the problem of fixed spacing in traditional heating elements 8. Multiple horizontally arranged heating mechanisms 3 form independent temperature zones, which, together with the heat insulation box 5, reduce heat crosstalk, ensuring temperature stability in each zone and improving packaging quality. Simultaneously, the combination of continuous conveying and adjustable heating improves production efficiency and product qualification rate, broadening the application range of the equipment.

[0025] According to one embodiment of this utility model, the adjustment component 9 includes a threaded rod 10, the support frame 6 has a vertically oriented groove, the movable slide plate 7 is slidably connected to the groove, the threaded rod 10 is rotatably disposed within the groove, and the movable slide plate 7 has a threaded hole that mates with the threaded rod 10. The adjustment component 9 also includes an adjustment motor 11, which is fixedly mounted on the top of the heat insulation box 5. The output end of the adjustment motor 11 passes through the heat insulation box 5 and is coaxially fixedly connected to the threaded rod 10. The adjustment motor 11 drives the threaded rod 10 to rotate within the groove of the support frame 6, and the movable slide plate 7 moves up and down along the threaded rod 10 through the threaded hole, precisely adjusting the distance between the resistance wire 23 and the conveyor belt 4. Automated adjustment is achieved through the adjustment motor 11, with high precision and speed, reducing manual intervention, adapting to rapid switching between different workpieces in batch production, and improving production continuity and efficiency.

[0026] According to one embodiment of this utility model, the adjusting component 9 includes a threaded rod 10, the support frame 6 has a vertically oriented sliding groove, the movable slide plate 7 is slidably connected to the sliding groove, the threaded rod 10 is rotatably disposed within the sliding groove, and the movable slide plate 7 has a threaded hole that mates with the threaded rod 10. The adjusting component 9 also includes an adjusting handwheel, which is rotatably connected to the top of the heat insulation box 5 and coaxially fixedly connected to the threaded rod 10. Rotating the adjusting handwheel causes the threaded rod 10 to rotate, and the movable slide plate 7 slides along the sliding groove to change the spacing of the resistance wires 23, achieving flexible adjustment through manual operation. The manual adjustment structure is simple and reliable, with low maintenance costs, suitable for small-batch, multi-specification workpiece production scenarios, meeting personalized adjustment needs, and improving equipment practicality.

[0027] According to one embodiment of this utility model, the heating mechanism 3 further includes a slide plate 12. The furnace frame 1 has a slot 13 that slides with the slide plate 12. The slide plate 12 is fixedly connected to the movable slide plate 7, and the side of the slide plate 12 is provided with a longitudinally arranged scale bar 14. The heating mechanism 3 also includes a laser rangefinder sensor 15, a display, and a control terminal. The laser rangefinder sensor 15 is fixedly connected to the furnace frame 1 and is located directly below the slide plate 12. The display and the laser rangefinder sensor 15 are both electrically connected to the control terminal. The movable slide plate 7 drives the slide plate 12 to rise and fall. The scale bar 14 visually displays the adjusted height, and the laser rangefinder sensor 15 detects the distance in real time and displays it on the display via the control terminal. By combining the scale bar 14 with laser rangefinder, the distance is visualized and accurately monitored, facilitating quick calibration by operators, reducing adjustment errors, ensuring heating consistency in each temperature zone, and improving product qualification rate.

[0028] According to one embodiment of the present invention, the heating mechanism 3 further includes an insulated door 16, of which two insulated doors 16 are provided and are slidably connected to the feed inlet and the discharge outlet in the vertical direction, respectively. The heating mechanism 3 also includes a rack 17, a drive shaft 18, a driven gear 19, a driven bevel gear 20, a driving bevel gear 21, and a drive motor 22. The rack 17 is vertically fixedly connected to the insulated door 16, the drive shaft 18 is horizontally rotatably connected to the heat insulation box 5, the driven gear 19 and the driven bevel gear 20 are coaxially fixedly connected to both ends of the drive shaft 18, the drive motor 22 is fixedly connected to the heat insulation box 5, and the driving bevel gear 21 is coaxially fixedly connected to the output end of the drive motor 22. The rack 17 meshes with the driven gear 19, and the driven bevel gear 20 meshes with the driving bevel gear 21. The drive motor 22 drives the transmission shaft 18 to rotate via the active bevel gear 21 and the driven bevel gear 20. The driven gear 19 meshes with the rack 17 to raise and lower the insulation door 16, controlling the opening and closing of the inlet and outlet. The insulation door 16 reduces heat loss and crosstalk in the temperature zone, improving temperature stability. The gear transmission enables precise switching control, adapts to the workpiece transport rhythm, saves energy, and ensures packaging quality.

[0029] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A chain-type packaging furnace with a multi-temperature zone structure, characterized in that, The furnace includes a furnace frame (1), a conveying mechanism (2), and a heating mechanism (3). The conveying mechanism (2) includes a conveyor belt (4), which is mounted on the top of the furnace frame (1). The heating mechanism (3) consists of several units arranged horizontally on the furnace frame (1). The heating mechanism (3) includes a heat insulation box (5), a support frame (6), a movable slide plate (7), a heating component (8), and an adjustment component (9). The heat insulation box (5) is fixedly connected to the furnace frame (1). The heat insulation box (5) has an inlet and an outlet on its two sides. The support frame (6) is fixedly connected to the heat insulation box (5). The movable slide plate (7) is slidably connected to the support frame (6). The heating component (8) is fixedly mounted at the bottom of the movable slide plate (7) and located directly above the conveyor belt (4). The adjustment component (9) is used to adjust the distance between the heating component (8) and the conveyor belt (4).

2. The chain-type packaging furnace with a multi-temperature zone structure as described in claim 1, characterized in that, The adjustment component (9) includes a threaded rod (10), the support frame (6) has a vertically oriented groove, the movable slide plate (7) is slidably connected to the groove, the threaded rod (10) is rotatably disposed in the groove, and the movable slide plate (7) has a threaded hole that mates with the threaded rod (10).

3. A chain-type packaging furnace with a multi-temperature zone structure as described in claim 2, characterized in that, The adjustment assembly (9) also includes an adjustment motor (11), which is fixedly installed on the top of the heat insulation box (5). The output end of the adjustment motor (11) passes through the heat insulation box (5) and is coaxially fixedly connected to the threaded rod (10).

4. A chain-type packaging furnace with a multi-temperature zone structure as described in claim 2, characterized in that, The adjustment assembly (9) also includes an adjustment handwheel, which is rotatably connected to the top of the heat insulation box (5) and is coaxially fixedly connected to the threaded rod (10).

5. A chain-type packaging furnace with a multi-temperature zone structure as described in claim 1, characterized in that, The heating mechanism (3) also includes a plug plate (12), the furnace frame (1) has a slot (13) that slides with the plug plate (12), the plug plate (12) is fixedly connected to the movable slide plate (7), and the side of the plug plate (12) is provided with a scale strip (14) arranged in the longitudinal direction.

6. A chain packaging furnace with a multi-temperature zone structure as described in claim 5, characterized in that, The heating mechanism (3) also includes a laser rangefinder (15), a display and a control terminal. The laser rangefinder (15) is fixedly connected to the furnace frame (1) and located directly below the insert plate (12). The display and the laser rangefinder (15) are both electrically connected to the control terminal.

7. A chain-type packaging furnace with a multi-temperature zone structure as described in claim 1, characterized in that, The heating mechanism (3) also includes an insulation door (16), which has two insulation doors and is slidably connected to the feed inlet and the discharge outlet in the vertical direction.

8. A chain-type packaging furnace with a multi-temperature zone structure as described in claim 7, characterized in that, The heating mechanism (3) further includes a rack (17), a drive shaft (18), a driven gear (19), a driven bevel gear (20), a driving bevel gear (21), and a drive motor (22). The rack (17) is vertically fixedly connected to the heat insulation box (16). The drive shaft (18) is horizontally rotatably connected to the heat insulation box (5). The driven gear (19) and the driven bevel gear (20) are coaxially fixedly connected to both ends of the drive shaft (18). The drive motor (22) is fixedly connected to the heat insulation box (5). The driving bevel gear (21) is coaxially fixedly connected to the output end of the drive motor (22). The rack (17) meshes with the driven gear (19), and the driven bevel gear (20) meshes with the driving bevel gear (21).

9. A chain-type packaging furnace with a multi-temperature zone structure as described in claim 1, characterized in that, The heating assembly (8) includes a resistance wire (23), which is fixedly disposed at the bottom of the movable slide plate (7) and located directly above the conveyor belt (4).

10. A chain-type packaging furnace with a multi-temperature zone structure as described in claim 1, characterized in that, The conveying mechanism (2) includes a variable frequency motor, a chain, a drive sprocket, a driven sprocket and a transmission roller. The drive sprocket is driven by the variable frequency motor. The driven sprocket is connected to the drive sprocket by the chain. There are two transmission rollers, which are coaxially fixedly connected to the drive sprocket and the driven sprocket respectively. The conveyor belt (4) is arranged between the two transmission rollers.

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