Combined multi-temperature-zone vacuum reflow soldering furnace

Abstract

This invention relates to the field of reflow soldering equipment technology, specifically to a combined multi-zone vacuum reflow oven, comprising an assembly frame for supporting the entire device and housing electrical components for soldering. The assembly frame includes a chassis; mounting rails installed inside the assembly frame, with two sets symmetrically distributed, each set including mounting side beams; and temperature zone mounting shells. This invention allows for arbitrary combination and installation of multiple temperature zone mounting shells according to customer needs, improving product and equipment adaptability. Furthermore, to adapt to the conveyor system, each temperature zone mounting shell is equipped with a conveyor belt, with multiple conveyor belts matched end-to-end. This addresses the problem in existing technologies where the structure is fixed and can only be used for specific PCB reflow soldering requirements, hindering flexible production.

Description

Technical Field

[0001] This invention relates to the field of reflow soldering equipment technology, and more specifically to a combined multi-temperature zone vacuum reflow oven. Background Technology

[0002] A vacuum reflow oven is a specialized piece of equipment used for high-quality welding of products in a vacuum environment. This equipment has a wide range of applications and can be used in various metal welding processes. The design principle of a vacuum reflow oven is to place the product to be welded in a vacuum environment, and then heat and melt the metal surface to achieve the welding purpose. The advantages of this equipment are that it can perform welding at high temperatures while maintaining a vacuum environment, avoiding the influence of oxygen in the air on the welding process, thereby improving the quality and reliability of the weld. In short, a vacuum reflow oven is a highly efficient and high-quality welding device suitable for various metal welding processes, and it has particularly broad application prospects in the manufacturing of products with high precision and high reliability requirements.

[0003] Existing reflow ovens typically include multiple temperature zones, such as a heating zone, a holding zone, a soldering zone, and a cooling zone. Conventional reflow ovens are customized according to customer requirements, with the number of temperature zones predetermined (e.g., 8, 10, or 12 zones), and these zones are then fixedly arranged within the oven chamber. This existing technology has a fixed structure, which can only be used for reflow soldering of PCBs with specific requirements and cannot achieve flexible production.

[0004] Therefore, it is necessary to invent a combined multi-temperature zone vacuum reflow oven to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a modular multi-zone vacuum reflow oven. By arbitrarily combining and installing multiple zone mounting shells, it can be customized according to the actual needs of customers, improving the adaptability of products and equipment. In order to be compatible with the conveying system, each zone mounting shell is equipped with a conveyor belt inside, and multiple conveyor belts are matched end to end. This solves the problem that the existing technology has a fixed structure, which can only be used for the reflow soldering needs of PCBs with specific requirements and cannot achieve flexible production.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a combined multi-temperature zone vacuum reflow oven, comprising...

[0007] An assembly frame for supporting the entire device and housing electrical components for soldering, the assembly frame including a chassis;

[0008] The mounting rails are installed inside the assembly frame. There are two sets of mounting rails, which are symmetrically distributed. The mounting rails include mounting side beams.

[0009] A temperature zone mounting shell is disposed between two mounting rails and slidably connected to the mounting rails. Several sets of temperature zone mounting shells are provided, and each set of temperature zone mounting shells cooperates with the mounting rails. The temperature zone mounting shell includes a mounting housing.

[0010] A power assembly, located inside the temperature zone mounting shell, is used to provide power support for material transmission, and the power assembly includes a bracket;

[0011] The conveying assembly is located on top of the power assembly. Under the action of the power assembly, it extends and retracts within the temperature zone mounting shell to transport materials. The conveying assembly includes a first feeding assembly and a second feeding assembly.

[0012] The heating rack is installed at the inner bottom of the temperature zone mounting shell, and the heating rack includes a mounting block;

[0013] A sealing assembly, comprising several units, is installed on both sides of the temperature zone mounting housing for sealing the temperature zone mounting housing. The sealing assembly includes a sealing door.

[0014] As a preferred embodiment of the present invention, the bottom of the chassis is equipped with multiple feet, the interior of the chassis is equipped with a control system supporting multiple temperature zones, and the top of the chassis is also equipped with a support frame. The interior of the support frame is sequentially provided with a docking station inlet, a heating zone, a vacuum zone, a cooling zone and a docking station outlet, wherein the heating zone, vacuum zone and cooling zone are respectively installed in one-to-one correspondence with the temperature zone mounting shell.

[0015] In a preferred embodiment of the present invention, the bottom of the mounting side beam is provided with multiple columns, the columns are detachably installed with the chassis, the mounting side beam is configured as an inverted U-shape, wherein a fixed guide rail runs through the interior of the mounting side beam, the fixed guide rail is staggered with the mounting side beam and is detachably connected by screws, the inner side of the fixed guide rail is provided with a guide groove, both sides of the mounting housing are provided with movable guide rails, the movable guide rail is provided with a guide block inside, the guide block cooperates with the guide groove, and the movable guide rail is connected to the fixed guide rail by mounting screws.

[0016] As a preferred embodiment of the present invention, the mounting housing has inlets and outlets at both ends, handles at the top of the mounting housing, an mounting plate on one side of the mounting housing, the mounting plate being L-shaped and cooperating with the column, a connection socket on the outer side of the mounting plate, and an indicator light on the top of the mounting plate.

[0017] In a preferred embodiment of the present invention, the bracket is shaped like an inverted triangle, a hydraulic cylinder is installed at the bottom of the mounting housing, the output end of the hydraulic cylinder extends through the bottom wall of the mounting housing into the interior of the mounting housing and is fixedly connected to the bottom of the bracket, a motor is installed inside the bracket, an active rotating rod is fixedly connected to the output end of the motor, the active rotating rod is rotatably connected to the bracket, and sliding grooves are provided at both ends of the top of the bracket.

[0018] In a preferred embodiment of the present invention, the first feeding assembly and the second feeding assembly are symmetrically arranged about the center point of the support. Both the first feeding assembly and the second feeding assembly include a crossbeam. The crossbeam is long and narrow and passes through a sliding groove. The inner sides of the two ends of the crossbeam are respectively rotatably connected to a first rotating roller and a second rotating roller. A first conveyor belt and a second conveyor belt are sleeved between the first rotating roller, the second rotating roller, and the active rotating rod. The two first conveyor belts and the second conveyor belt are spaced apart and have the same shape and material.

[0019] As a preferred embodiment of the present invention, two limiting sliders are fixedly connected to the outer side of the crossbeam, and two first limiting grooves are opened on the inner two side walls of the mounting housing. The bottom of the first limiting groove is connected to a second limiting groove. The second limiting groove is inclined. The limiting slider is located inside the first limiting groove and is slidably connected to the first limiting groove. The second limiting grooves on the inner two side walls of the mounting housing are inclined in opposite directions.

[0020] As a preferred embodiment of the present invention, the mounting block has an internal cavity, which corresponds one-to-one with the first conveyor belt and the second conveyor belt. The two ends of the mounting block are respectively provided with a second storage groove and a first storage groove, which correspond to the first rotating roller and the second rotating roller respectively. A square groove is provided at the center of the mounting block, which cooperates with the bracket.

[0021] In a preferred embodiment of the present invention, the size of the sealing door is matched with the mounting housing, an electric slide rail is provided on the side of the sealing door, a movable slider is provided on the side of the mounting housing, the electric slide rail cooperates with the movable slider, and blocks are fixedly connected to both sides of the top of the mounting housing.

[0022] Compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0023] 1. By staggering the fixed guide rails and mounting side beams, users can freely adjust the length of the mounting guide rails as needed. Users can slide the temperature zone mounting shell into the mounting guide rails and then connect the control system to the heating zone, vacuum zone, and cooling zone inside the temperature zone mounting shell through the connection port. The data parameters can be adjusted so that each heating zone, vacuum zone, and cooling zone can work independently. The number of heating zones, vacuum zones, and cooling zones can be set arbitrarily according to the needs of the device, and the number can be increased or decreased at will.

[0024] 2. In the initial state, the power component and conveying component retract, facilitating the storage of the conveying component and allowing the material to descend and be placed on top of the crossbeam. The crossbeam then retracts inside the mounting housing, preventing material displacement during retraction. When material needs to be conveyed, the starting bracket drives the conveying component upward, simultaneously causing the first and second feeding components to slide to the sides and extend to the outside of the mounting housing. Then, the limiting slider enters the first limiting groove, causing the conveying component to rise vertically, lifting the material away from the crossbeam and placing it on top of the first and second conveyor belts. The motor then starts, driving the first and second conveyor belts to rotate, thus conveying the material. Multiple temperature zone mounting housings cooperate, with adjacent first feeding components and adjacent second feeding components engaging with each other, preventing material from getting stuck at the connection points. Each temperature zone mounting housing can operate independently without affecting others, and the number can be easily increased or decreased. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the connection structure between the mounting rail and the temperature zone mounting shell of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection structure of multiple conveying components of the present invention;

[0029] Figure 4 This is a side view of the mounting rail and temperature zone mounting housing of the present invention.

[0030] Figure 5This is a schematic diagram showing the detailed structure of the mounting rail of the present invention;

[0031] Figure 6 This is a three-dimensional structural diagram of the temperature zone mounting shell of the present invention;

[0032] Figure 7 This is a three-dimensional structural diagram of the mounting housing of the present invention;

[0033] Figure 8 This is a schematic diagram of the connection structure between the power component and the conveying component of the present invention;

[0034] Figure 9 This is a schematic diagram of the connection structure between the conveying assembly and the heating frame of the present invention;

[0035] Figure 10 This is a three-dimensional structural diagram of the power component of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 001. Assembly rack; 002. Mounting rail; 003. Temperature zone mounting housing; 004. Power assembly; 005. Conveying assembly; 006. Heating rack; 007. Sealing assembly;

[0038] 101. Chassis; 102. Foot; 103. Support frame; 104. Connecting platform entrance; 105. Heating zone; 106. Vacuum zone; 107. Cooling zone; 108. Connecting platform exit;

[0039] 201. Column; 202. Side beam installation; 203. Fixed guide rail; 204. Guide groove; 205. Movable guide rail; 206. Guide block; 207. Installation screw;

[0040] 301. Housing; 302. Inlet / outlet; 303. Handle; 304. Mounting plate; 305. Connection port; 306. Indicator light;

[0041] 401. Bracket; 402. Hydraulic cylinder; 403. Telescopic rod; 404. Motor; 405. Drive rod; 406. Sliding groove;

[0042] 510. First feeding assembly; 520. Second feeding assembly; 501. Crossbeam; 502. First rotating roller; 503. Second rotating roller; 504. Limiting slider; 505. First limiting groove; 506. Second limiting groove; 507. First conveyor belt; 508. Second conveyor belt;

[0043] 601. Mounting block; 602. Cavity; 603. First storage slot; 604. Second storage slot; 605. Square slot;

[0044] 701. Sealed door; 702. Electric sliding rail; 703. Movable slider; 704. Stop block. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] This invention provides, for example Figure 1-10 The diagram shows a combined multi-zone vacuum reflow oven, comprising an assembly frame 001 for supporting the entire device and housing electrical components for soldering. The assembly frame 001 includes a base 101; two sets of mounting rails 002 symmetrically distributed inside the assembly frame 001, each including a mounting side beam 202; several sets of temperature zone mounting shells 003 slidably connected between the two mounting rails 002 and positioned between them, each cooperating with a mounting rail 002; and a power component 004. The power assembly 004, located inside the temperature zone mounting shell 003, provides power support for material transfer and includes a bracket 401. A conveying assembly 005, located on top of the power assembly 004, extends and retracts within the temperature zone mounting shell 003 under the action of the power assembly 004 to transfer materials. The conveying assembly 005 includes a first feeding assembly 510 and a second feeding assembly 520. A heating mounting frame 006 is installed at the bottom inner side of the temperature zone mounting shell 003 and includes a mounting block 601. Several sealing assemblies 007 are provided and installed on both sides of the temperature zone mounting shell 003 to seal it. Each sealing assembly 007 includes a sealing door 701.

[0047] Before use, the user can place the multiple temperature zone mounting shells 003 between the mounting rails 002 for installation and docking. The user can install the temperature zone mounting shells 003 in the designated positions as needed and make adaptive adjustments according to the required number.

[0048] Heating zone 105 is divided into a preheating zone and a heat preservation zone. The circuit board with the components mounted passes through the preheating zone, heat preservation zone, vacuum zone 106, and cooling zone 107. Through the action of these four temperature zones, a complete solder joint is formed. When the PCB enters the heating zone, the solvent and gas in the solder paste evaporate together. The flux in the solder paste wets the pads, component ends, and leads. The solder paste softens, collapses, and covers the pads, isolating the pads and component leads from oxygen. When the PCB enters the heat preservation zone, the PCB and components are fully preheated to prevent the PCB and components from being damaged by suddenly entering the high-temperature soldering zone. When the PCB enters the vacuum zone 106, the temperature rises rapidly, causing the solder paste to reach a molten state. The liquid solder wets, disperses, flows, or reflows to mix with the pads, component ends, and leads of the PCB to form solder joints. When the PCB enters the cooling zone 107, the solder joints solidify, and the reflow soldering ends.

[0049] The chassis 101 has multiple feet 102 mounted on its bottom. A control system supporting multiple temperature zones is installed inside the chassis 101. A support frame 103 is mounted on the top of the chassis 101. Inside the support frame 103, a docking station inlet 104, a heating zone 105, a vacuum zone 106, a cooling zone 107, and a docking station outlet 108 are sequentially arranged. The heating zone 105, vacuum zone 106, and cooling zone 107 are each installed in a corresponding temperature zone mounting shell 003. Before use, the user can install the internal components of the heating zone 105, vacuum zone 106, and cooling zone 107 inside the corresponding temperature zone mounting shell 003 as needed. The user can set up multiple heating zones 105, vacuum zones 106, and cooling zones 107 and arrange them sequentially inside the support frame 103. The chassis 101 houses a control system that controls the operation of the entire device. The user can install the installed temperature zone mounting shell 003 with the designated interface, electrically connecting the entire device to the control system for unified control.

[0050] In the structure, multiple columns 201 are provided at the bottom of the mounting side beam 202. The columns 201 are detachably installed from the chassis 101. The mounting side beam 202 is U-shaped, and a fixed guide rail 203 runs through its interior. The fixed guide rail 203 and the mounting side beam 202 are staggered and detachably connected by screws. A guide groove 204 is provided on the inner side of the fixed guide rail 203. Movable guide rails 205 are provided on both sides of the mounting housing 301. A guide block 206 is provided inside the movable guide rail 205. The guide block 206 cooperates with the guide groove 204. The movable guide rails 205 and the fixed guide rails 203 are connected by mounting screws 207. During installation, the user can install the columns 201 on the chassis 101. Inside, the mounting side beam 202 is installed on top of the column 201, and the fixed guide rail 203 is installed on the side of the mounting side beam 202. The fixed guide rail 203 and the mounting side beam 202 are staggered, allowing the user to adjust the length of the mounting guide rail 002 as needed. The user can slide the temperature zone mounting shell 003 into the interior of the mounting guide rail 002. The movable guide rail 205 on the side of the mounting shell 301 cooperates with the guide groove 204, allowing the movable guide rail 205 and the guide groove 204 to slide together. After sliding to the designated position, the user can fix the mounting plate 304 to the mounting side beam 202 with screws to prevent the temperature zone mounting shell 003 from moving.

[0051] In the above structure, the mounting housing 301 has inlet and outlet 302 at both ends, and handle 303 at the top of the mounting housing 301. A mounting plate 304 is installed on one side of the mounting housing 301. The mounting plate 304 is L-shaped and cooperates with the column 201. A connection socket 305 is opened on the outer side of the mounting plate 304, and an indicator light 306 is installed on the top of the mounting plate 304. After the mounting housing 301 is installed, the user can pull the mounting housing 301 with the handle 303 for easy adjustment. Then, the control system is connected to the heating zone 105, vacuum zone 106 and cooling zone 107 inside the temperature zone mounting housing 003 through the connection socket 305, and the data parameters are adjusted so that each heating zone 105, vacuum zone 106 and cooling zone 107 can work independently, and the number of heating zones 105, vacuum zones 106 and cooling zones 107 can be set according to the needs of the device.

[0052] The bracket 401 is U-shaped. A hydraulic cylinder 402 is installed at the bottom of the mounting housing 301. The output end of the hydraulic cylinder 402 extends through the bottom wall of the mounting housing 301 into the interior of the mounting housing 301 and is fixedly connected to the bottom of the bracket 401. A motor 404 is installed inside the bracket 401. An active rotating rod 405 is fixedly connected to the output end of the motor 404. The active rotating rod 405 is rotatably connected to the bracket 401. Sliding grooves 406 are provided at both ends of the top of the bracket 401. The user can drive the telescopic rod by activating the hydraulic cylinder 402. When 403 moves upward, the telescopic rod 403 pushes the support 401 to rise. The support 401 drives the motor 404 and the active rotating rod 405 to move, causing the conveying assembly 005 to rise synchronously. Because the limiting slider 504 slides inside the second limiting groove 506, the crossbeam 501 slides outward while rising. Then, the motor 404 is started to drive the active rotating rod 405 to rotate. The active rotating rod 405 drives the conveying assembly 005 to move, thereby conveying the material. The support 401 can drive the conveying assembly 005 to rise and fall and limit the crossbeam 501.

[0053] Furthermore, the first feeding assembly 510 and the second feeding assembly 520 are symmetrically arranged about the center point of the support 401. Both the first feeding assembly 510 and the second feeding assembly 520 include a crossbeam 501, which is elongated and passes through the sliding groove 406. The inner sides of both ends of the crossbeam 501 are rotatably connected to a first rotating roller 502 and a second rotating roller 503, respectively. A first conveyor belt 507 and a second conveyor belt 508 are sleeved between the first rotating roller 502, the second rotating roller 503, and the active rotating rod 405. A gap is provided between a first conveyor belt 507 and a second conveyor belt 508, and they are the same shape and material; two limiting sliders 504 are fixedly connected to the outer side of the crossbeam 501; two first limiting grooves 505 are opened on the inner two side walls of the mounting housing 301; the bottom of the first limiting groove 505 is connected to a second limiting groove 506; the second limiting groove 506 is inclined; the limiting slider 504 is located inside the first limiting groove 505 and is slidably connected to the first limiting groove 505; the second limiting grooves 506 on the inner two side walls of the mounting housing 301 are inclined in opposite directions.

[0054] In the initial state, the power assembly 004 and the conveying assembly 005 retract. At this time, the first rotating roller 502 is inside the first receiving groove 603, and the second rotating roller 503 is inside the second receiving groove 604, which facilitates the storage of the conveying assembly 005 and also drives the material to descend so that the material is placed on the top of the crossbeam 501. Then, the crossbeam 501 retracts into the mounting housing 301, which can prevent the material from shifting when the crossbeam 501 retracts. When it is necessary to convey the material, the conveying assembly 005 is driven to rise by the starting bracket 401. The limiting slider 504 slides inside the second limiting groove 506, thereby driving the first feeding assembly 510 and the second feeding assembly 520 to rise. While rising, it slides to both sides, extending to the outside of the mounting housing 301. Then, the limiting slider 504 enters the interior of the first limiting groove 505. Since the first limiting groove 505 is vertically set, it drives the conveying component 005 to rise vertically, thereby lifting the material away from the crossbeam 501 and placing it on top of the first conveyor belt 507 and the second conveyor belt 508. Then, the motor 404 is started to drive the first conveyor belt 507 and the second conveyor belt 508 to rotate, thereby conveying the material. Multiple temperature zone mounting housings 003 cooperate to make adjacent first feeding components 510 connect with each other, and adjacent second feeding components 520 connect with each other, which helps to prevent the material from getting stuck at the connection.

[0055] The mounting block 601 has an internal cavity 602, which corresponds one-to-one with the first conveyor belt 507 and the second conveyor belt 508. The two ends of the mounting block 601 are respectively provided with a second storage groove 604 and a first storage groove 603, which correspond to the first rotating roller 502 and the second rotating roller 503, respectively. The center of the mounting block 601 has a square groove 605, which cooperates with the bracket 401. The first conveyor belt 507 and the second conveyor belt 508 are staggered with the mounting block 601 to prevent interference between the mounting block 601 and the second conveyor belt 508.

[0056] In the structure, the size of the sealing door 701 matches that of the mounting housing 301. The side of the sealing door 701 is provided with an electric slide rail 702, and the side of the mounting housing 301 is provided with a movable slider 703. The electric slide rail 702 and the movable slider 703 cooperate with each other. Both sides of the top of the mounting housing 301 are fixedly connected with blocks 704. After transportation, the user can drive the electric slide rail 702 to slide through the movable slider 703, thereby driving the sealing door 701 to move. After the sealing door 701 rises and docks with the blocks 704, it seals the inside of the mounting housing 301, allowing each temperature zone mounting housing 301 to operate independently. After sealing, nitrogen can be filled into the interior, and the inert gas can reduce oxidation.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A combination multi-temperature zone vacuum reflow soldering furnace, characterized by, include: An assembly frame (001) is used to support the entire device and has electrical components for soldering installed inside. The assembly frame (001) includes a chassis (101). Mounting guide rails (002) are installed inside the assembly frame (001). Two sets of mounting guide rails (002) are provided, and the two sets of mounting guide rails (002) are symmetrically distributed. The mounting guide rails (002) include mounting side beams (202). A temperature zone mounting shell (003) is disposed between two mounting guide rails (002) and slidably connected to the mounting guide rails (002). Several sets of temperature zone mounting shells (003) are provided, and several sets of temperature zone mounting shells (003) cooperate with the mounting guide rails (002). The temperature zone mounting shell (003) includes a mounting shell (301). A power assembly (004) is disposed inside the temperature zone mounting shell (003) and is used to provide power support for material transmission. The power assembly (004) includes a bracket (401). The conveying assembly (005) is located on top of the power assembly (004). Under the action of the power assembly (004), it extends and retracts within the temperature zone mounting shell (003) and transports materials. The conveying assembly (005) includes a first feeding assembly (510) and a second feeding assembly (520). The heating bracket (006) is installed on the inner bottom of the temperature zone mounting shell (003), and the heating bracket (006) includes a mounting block (601). A plurality of sealing assemblies (007) are provided and installed on both sides of the temperature zone mounting shell (003) for sealing the temperature zone mounting shell (003). The sealing assembly (007) includes a sealing door (701). The bracket (401) is shaped like a c, and a hydraulic cylinder (402) is installed at the bottom of the mounting housing (301). The output end of the hydraulic cylinder (402) extends through the bottom wall of the mounting housing (301) into the interior of the mounting housing (301) and is fixedly connected to the bottom of the bracket (401). A motor (404) is installed inside the bracket (401), and an active rotating rod (405) is fixedly connected to the output end of the motor (404). The active rotating rod (405) is rotatably connected to the bracket (401). Sliding grooves (406) are provided at both ends of the top of the bracket (401). The first feeding assembly (510) and the second feeding assembly (520) are symmetrically arranged with the center point of the bracket (401) as the axis. Both the first feeding assembly (510) and the second feeding assembly (520) include a crossbeam (501). The crossbeam (501) is long and narrow, and the crossbeam (501) passes through the sliding groove (406). The inner sides of the two ends of the crossbeam (501) are respectively rotatably connected to a first rotating roller (502) and a second rotating roller (503). A first conveyor belt (507) and a second conveyor belt (508) are sleeved between the first rotating roller (502), the second rotating roller (503) and the active rotating rod (405). There is a gap between the two first conveyor belts (507) and the second conveyor belt (508), and they are the same in shape and material. Two limiting sliders (504) are fixedly connected to the outer side of the crossbeam (501). Two first limiting grooves (505) are opened on the inner two side walls of the mounting housing (301). The bottom of the first limiting groove (505) is connected to a second limiting groove (506). The second limiting groove (506) is inclined. The limiting slider (504) is located inside the first limiting groove (505) and is slidably connected to the first limiting groove (505). The second limiting grooves (506) on the inner two side walls of the mounting housing (301) are inclined in opposite directions.

2. The combined multi-temperature zone vacuum reflow oven according to claim 1, characterized in that: The bottom of the chassis (101) is equipped with multiple feet (102). The chassis (101) is equipped with a control system that supports multiple temperature zones. The top of the chassis (101) is also equipped with a support frame (103). The support frame (103) is provided with a docking station inlet (104), a heating zone (105), a vacuum zone (106), a cooling zone (107), and a docking station outlet (108) in sequence. The heating zone (105), the vacuum zone (106), and the cooling zone (107) are respectively installed in correspondence with the temperature zone mounting shell (003).

3. The combined multi-temperature zone vacuum reflow oven according to claim 1, characterized in that: The bottom of the mounting side beam (202) is provided with multiple columns (201). The columns (201) are detachably installed with the chassis (101). The mounting side beam (202) is set in the shape of a c, and a fixed guide rail (203) runs through the inside of the mounting side beam (202). The fixed guide rail (203) and the mounting side beam (202) are staggered and detachably connected by screws. A guide groove (204) is provided on the inner side of the fixed guide rail (203). Movable guide rails (205) are provided on both sides of the mounting housing (301). A guide block (206) is provided inside the movable guide rail (205). The guide block (206) cooperates with the guide groove (204). The movable guide rail (205) and the fixed guide rail (203) are connected by mounting screws (207).

4. A combined multi-temperature zone vacuum reflow oven according to claim 1, characterized in that: The mounting housing (301) has an inlet and outlet (302) at both ends, and a handle (303) is provided at the top of the mounting housing (301). A mounting plate (304) is installed on one side of the mounting housing (301). The mounting plate (304) is L-shaped and matches the column (201). A connection socket (305) is provided on the outer side of the mounting plate (304). An indicator light (306) is installed on the top of the mounting plate (304).

5. A combined multi-temperature zone vacuum reflow oven according to claim 1, characterized in that: The mounting block (601) has a cavity (602) inside, which corresponds one-to-one with the first conveyor belt (507) and the second conveyor belt (508). The mounting block (601) has a second storage groove (604) and a first storage groove (603) at its two ends, respectively. The first storage groove (603) and the second storage groove (604) correspond to the first rotating roller (502) and the second rotating roller (503) respectively. The mounting block (601) has a square groove (605) at its center, which cooperates with the bracket (401).

6. A combined multi-temperature zone vacuum reflow oven according to claim 1, characterized in that: The size of the sealing door (701) matches the mounting housing (301). An electric slide rail (702) is provided on the side of the sealing door (701), and a movable slider (703) is provided on the side of the mounting housing (301). The electric slide rail (702) and the movable slider (703) cooperate with each other. Stops (704) are fixedly connected to both sides of the top of the mounting housing (301).

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