Reflow soldering furnace door plate mechanism with limiting structure

Abstract

The utility model discloses a reflow soldering furnace door plate mechanism with limiting structure, including base, the upper surface rear side of base is hinged with the top plate through the hinge, the inside fixed connection of top plate has the electric heating plate of uniform distribution, the inside front side fixed connection of base has the crosspiece, still includes limiting component, limiting component includes electric support rod support no.

Description

Technical Field

[0001] This utility model relates to the field of reflow soldering equipment technology, specifically to a reflow oven door panel mechanism with a limiting structure. Background Technology

[0002] The electronic devices we use in daily life usually contain circuit boards. The electronic components on the circuit boards are connected by the circuits inside the circuit boards to realize the various functions of the electronic devices. Reflow ovens are necessary equipment for the production of circuit boards. When reflow soldering circuit boards, some solder oil or solder paste will remain in the reflow oven. It is necessary to open the furnace chamber of the reflow oven through the reflow oven door mechanism to clean and maintain the inside of the reflow oven.

[0003] Existing reflow oven door mechanisms all use an electric support rod between the base and top plate of the reflow oven to open or close the furnace chamber by extending or retracting the electric support rod. However, the existing reflow oven door mechanism lacks a limiting structure, which can easily cause the electric support rod to deviate during the extension and retraction process, resulting in certain safety hazards when the furnace chamber is opened. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a reflow oven door panel mechanism with a limiting structure. Through the limiting component, a limiting ear 1 is set on the electric support rod bracket 1 and a limiting ear 2 is set on the electric support rod bracket 2. Thus, the limiting ear 1 limits the fixed end of the electric support rod, and the limiting ear 2 limits the telescopic end of the electric support rod, thereby preventing the electric support rod from deflecting during operation, improving the safety when the furnace is opened, and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reflow oven door panel mechanism with a limiting structure, including a base, a top plate hinged to the rear side of the upper surface of the base, a uniformly distributed heating plate fixedly connected inside the top plate, a crossbar fixedly connected to the front side of the interior of the base, and a limiting component.

[0006] The limiting assembly includes an electric support rod bracket 1, an electric support rod bracket 2, an electric support rod, a limiting ear 1, and a limiting ear 2. The electric support rod bracket 1 is fixedly connected to both the left and right sides of the upper surface of the crossbar. The electric support rod bracket 2, which is symmetrically distributed on the left and right sides, is fixedly connected to the front side of the inside of the top plate. The upper left surface of the electric support rod bracket 1 is fixedly connected to the evenly distributed limiting ear 1. The lower end of the electric support rod bracket 2 is fixedly connected to the symmetrically distributed limiting ear 2. The electric support rods are rotatably connected between the vertically adjacent electric support rod bracket 1 and electric support rod bracket 2.

[0007] Furthermore, a microcontroller is fixedly connected to the upper right surface of the base via a mounting rod. The input end of the microcontroller is electrically connected to an external power source, and the input ends of the heating plate and the electric support rod are both electrically connected to the output end of the microcontroller to control the operation of the electrical appliances.

[0008] Furthermore, the lower side of the inner rear surface of the base is rotatably connected to a drive shaft that is symmetrically distributed on both sides. A movable mounting bracket is slidably connected between the two drive shafts. A second sprocket is fixedly connected to the rear side of the outer surface of each drive shaft. A first sprocket is rotatably connected to the upper side of the inner rear surface of the base. A first sprocket is also rotatably connected to the upper side of the rear surface of the movable mounting bracket. A second sprocket is also rotatably connected to the lower side of the rear surface of the movable mounting bracket. The first and second sprockets on the inner rear surface of the base are connected by a chain drive. The first and second sprockets on the rear surface of the movable mounting bracket are also connected by a chain drive. The inner arc surface of the second sprocket on the movable mounting bracket is fixedly connected to a locking block. The outer surface of each drive shaft is provided with a locking groove. The locking blocks are slidably connected in the locking groove on the same side to transmit driving force and transport the circuit board.

[0009] Furthermore, a motor is fixedly connected to the left side of the base. The rear end of the output shaft of the motor is fixedly connected to the front end of the transmission shaft on the left side. The input end of the motor is electrically connected to the output end of the microcontroller to provide driving force.

[0010] Furthermore, a screw is threadedly connected to the center of the outer surface of the movable mounting bracket, and a second motor is fixedly connected to the center of the front side of the base. The rear side of the output shaft of the second motor is fixedly connected to the front end of the screw, and the input end of the second motor is electrically connected to the output end of the microcontroller. The position of the movable mounting bracket can be adjusted to adapt to circuit boards of different widths.

[0011] Furthermore, a temperature sensor is fixedly connected inside the top plate. The detection end of the temperature sensor extends to the lower side of the top plate. The temperature sensor is bidirectionally electrically connected to the microcontroller to monitor and regulate the temperature inside the reflow soldering circuit.

[0012] Furthermore, the upper surface of the base is fixedly connected with symmetrically distributed rubber pads, and the lower surface of the top plate is also fixedly connected with symmetrically distributed rubber pads to prevent the base and the top plate from directly contacting each other and causing collisions.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By using a limiting assembly, a limiting ear is set on the first electric support rod bracket and a limiting ear is set on the second electric support rod bracket. This limits the fixed end of the electric support rod by the first limiting ear and the telescopic end of the electric support rod by the second limiting ear, thereby preventing the electric support rod from deflecting during operation and improving the safety when the furnace is opened. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the screw and motor structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting component structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the transmission shaft, sprocket 2, and locking block structure of this utility model.

[0020] In the diagram: 1. Base, 2. Top plate, 3. Microcontroller, 4. Sprocket I, 5. Chain, 6. Movable mounting bracket, 7. Drive shaft, 8. Sprocket II, 9. Motor I, 10. Crossbar, 11. Limiting assembly, 111. Electric support rod bracket I, 112. Electric support rod bracket II, 113. Electric support rod, 114. Limiting ear I, 115. Limiting ear II, 12. Screw, 13. Motor II, 14. Heating plate, 15. Temperature sensor, 16. Rubber pad, 17. Locking block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5This embodiment provides a technical solution: a reflow oven door panel mechanism with a limiting structure, including a base 1, a top plate 2 hinged to the rear side of the upper surface of the base 1, a uniformly distributed heating plate 14 fixedly connected inside the top plate 2, a crossbar 10 fixedly connected to the front side of the interior of the base 1, a microcontroller 3 fixedly connected to the right side of the upper surface of the base 1 via a mounting rod, the input end of the microcontroller 3 being electrically connected to an external power source, and the input ends of the heating plate 14 and the electric support rod 113 being electrically connected to the output end of the microcontroller 3; a drive shaft 7 symmetrically distributed on the left and right sides is rotatably connected to the lower side of the rear surface of the interior of the base 1, a movable mounting bracket 6 is slidably connected between the two drive shafts 7, and a sprocket 8 is fixedly connected to the rear side of the outer surface of each drive shaft 7; a sprocket 8 symmetrically distributed on the upper side of the rear surface of the interior of the base 1 is rotatably connected to the upper side of the rear surface of the base 1. The upper side of the rear surface of the movable mounting frame 6 is rotatably connected to the sprocket 4, which is symmetrically distributed on both sides. The lower side of the rear surface of the movable mounting frame 6 is also rotatably connected to the sprocket 8, which is symmetrically distributed on both sides. The sprocket 4 and sprocket 8 on the inner rear surface of the base 1 are connected by a chain 5. The sprocket 4 and sprocket 8 on the rear surface of the movable mounting frame 6 are also connected by a chain 5. The inner arc surface of the sprocket 8 on the movable mounting frame 6 is fixedly connected to a locking block 17. The outer surface of the drive shaft 7 is provided with a locking groove. The locking blocks 17 are slidably connected in the locking groove on the same side. The inner left side of the base 1 is fixedly connected to the motor 9. The rear end of the output shaft of the motor 9 is fixedly connected to the front end of the drive shaft 7 on the left side. The input end of the motor 9 is electrically connected to the output end of the microcontroller 3.

[0023] Among them, the outer surface of the movable mounting bracket 6 is threaded with a screw 12 (a corrugated pipe can be fixedly connected to the front and rear surfaces of the movable mounting bracket 6, and the corrugated pipe is sleeved on the outer surface of the screw 12 to protect the screw 12 and prevent dust and other debris from sticking to the outer surface of the screw and causing the screw 12 to jam). The inner front side of the base 1 is fixedly connected with a motor 2 13. The rear side of the output shaft of the motor 2 13 is fixedly connected to the front end of the screw 12, and the input end of the motor 2 13 is electrically connected to the output end of the microcontroller 3.

[0024] A temperature sensor 15 is fixedly connected inside the top plate 2. The detection end of the temperature sensor 15 extends to the lower side of the top plate 2. The temperature sensor 15 is bidirectionally electrically connected to the microcontroller 3. The detection end of the temperature sensor 15 monitors the temperature between the base 1 and the top plate 2 and transmits the monitored temperature signal to the microcontroller 3.

[0025] Among them, the upper surface of the base 1 is fixedly connected with symmetrically distributed rubber pads 16, and the lower surface of the top plate 2 is also fixedly connected with symmetrically distributed rubber pads 16.

[0026] The system also includes a limiting component 11; the limiting component 11 includes an electric support rod bracket 111, an electric support rod bracket 112, an electric support rod 113, a limiting ear 114, and a limiting ear 115. The electric support rod bracket 111 is fixedly connected to both the left and right sides of the upper surface of the crossbar 10. The electric support rod bracket 112 is fixedly connected to the front side of the interior of the top plate 2. The limiting ears 114 are fixedly connected to the upper side of the left surface of the electric support rod bracket 111. The limiting ears 115 are fixedly connected to the lower end of the electric support rod bracket 112. The electric support rod 113 is rotatably connected between the vertically adjacent electric support rod brackets 111 and electric support rod bracket 112.

[0027] The working principle of this utility model is as follows:

[0028] When in use, the microcontroller 3 is operated to start the heating plate 14 and the temperature sensor 15. The heating plate 14 heats the space between the base 1 and the top plate 2. The detection end of the temperature sensor 15 monitors the temperature between the base 1 and the top plate 2 and transmits the monitored temperature signal to the microcontroller 3.

[0029] Start motor 9. The output shaft of motor 9 rotates, which drives screw 12 to rotate, causing movable mounting bracket 6 to move along the direction of screw 12. This causes sprocket 4 and sprocket 8 on movable mounting bracket 6 to move, so that the front chain 5 moves to the appropriate position.

[0030] Start motor 9. The output shaft of motor 9 rotates, which drives the transmission shaft 7 on the left to rotate, causing the sprocket 8 on the left to rotate, which in turn drives the chain 5 to rotate. Place the circuit board between the two chains 5, so that the circuit board follows the chain 5 into the space between the base 1 and the top plate 2, thereby reflow soldering the solder paste on the circuit board.

[0031] When maintenance of the reflow oven's interior is required, the microcontroller 3 is operated to activate the electric support rod 113. The telescopic end of the electric support rod 113 extends, pushing the electric support rod bracket 112 to move, causing the top plate 2 to rotate around the hinge point between the base 1 and the top plate 2, thereby opening the top plate 2. At the same time, the limiting ear 114 is located on the front and rear sides of the fixed end of the electric support rod 113, and the limiting ear 115 is located on the front and rear sides of the telescopic end of the electric support rod 113, thereby limiting and protecting the electric support rod 113 and ensuring the safety of opening the reflow oven chamber. After cleaning the inside of the oven chamber, the electric support rod 13 is activated again, and the telescopic end of the electric support rod 113 retracts and resets, causing the top plate 2 to reset. The rubber pad 16 on the top plate 2 contacts the rubber pad 16 on the base 1, preventing the top plate 2 from directly contacting the base 1 and causing collisions.

[0032] It is worth noting that in the above embodiments, the microcontroller 3 is an STM32F103RCT6, the motor 9 is a Y2-160M1-8, the motor 13 is a YB2-180M-4, and the temperature sensor 15 is a PT100-230. The microcontroller 3 controls the operation of the motor 9, the motor 13, the heating plate 14, and the temperature sensor 15 using methods commonly used in the prior art.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A reflow oven door panel mechanism with a limiting structure, comprising a base (1), wherein a top plate (2) is hinged to the rear side of the upper surface of the base (1) via a hinge, and uniformly distributed heating plates (14) are fixedly connected inside the top plate (2), and a crossbar (10) is fixedly connected to the front side of the interior of the base (1), characterized in that: It also includes a limiting component (11); The limiting component (11) includes an electric support rod bracket one (111), an electric support rod bracket two (112), an electric support rod (113), a limiting ear one (114), and a limiting ear two (115). The upper surface of the crossbar (10) is fixedly connected to the electric support rod bracket one (111) on both the left and right sides. The inner front side of the top plate (2) is fixedly connected to the electric support rod bracket two (112) which is symmetrically distributed on the left and right sides. The upper left surface of the electric support rod bracket one (111) is fixedly connected to the evenly distributed limiting ear one (114). The lower end of the electric support rod bracket two (112) is fixedly connected to the symmetrically distributed limiting ear two (115). The electric support rods (113) are rotatably connected between the vertically adjacent electric support rod bracket one (111) and electric support rod bracket two (112).

2. The reflow oven door panel mechanism with a limiting structure according to claim 1, characterized in that: A microcontroller (3) is fixedly connected to the upper right side of the base (1) via a mounting rod. The input end of the microcontroller (3) is electrically connected to an external power source. The input ends of the heating plate (14) and the electric support rod (113) are both electrically connected to the output end of the microcontroller (3).

3. A reflow oven door panel mechanism with a limiting structure according to claim 2, characterized in that: The lower side of the inner rear surface of the base (1) is rotatably connected to two symmetrically distributed drive shafts (7). A movable mounting bracket (6) is slidably connected between the two drive shafts (7). A sprocket two (8) is fixedly connected to the rear side of the outer surface of each drive shaft (7). A sprocket one (4) is rotatably connected to the upper side of the inner rear surface of the base (1). A sprocket one (4) is also rotatably connected to the upper side of the rear surface of the movable mounting bracket (6). A sprocket two (8) is also rotatably connected to the lower side of the rear surface of the movable mounting bracket (6). The two sprockets (8) are symmetrically distributed on the left and right. The two sprockets (4) and (8) on the inner rear surface of the base (1) are connected by a chain (5). The two sprockets (4) and (8) on the rear surface of the movable mounting frame (6) are also connected by a chain (5). The inner arc surface of the two sprockets (8) on the movable mounting frame (6) is fixedly connected with a locking block (17). The outer surface of the drive shaft (7) is provided with a locking groove. The locking blocks (17) are slidably connected in the locking groove on the same side.

4. The reflow oven door panel mechanism with a limiting structure according to claim 3, characterized in that: The base (1) has a motor (9) fixedly connected to the left side inside. The rear end of the output shaft of the motor (9) is fixedly connected to the front end of the transmission shaft (7) on the left side. The input end of the motor (9) is electrically connected to the output end of the microcontroller (3).

5. A reflow oven door panel mechanism with a limiting structure according to claim 3, characterized in that: The outer surface of the movable mounting bracket (6) is threaded with a screw (12), and the inner front side of the base (1) is fixedly connected with a motor (13). The rear side of the output shaft of the motor (13) is fixedly connected to the front end of the screw (12), and the input end of the motor (13) is electrically connected to the output end of the microcontroller (3).

6. A reflow oven door panel mechanism with a limiting structure according to claim 1, characterized in that: A temperature sensor (15) is fixedly connected inside the top plate (2). The detection end of the temperature sensor (15) extends to the lower side of the top plate (2). The temperature sensor (15) is bidirectionally electrically connected to the microcontroller (3).

7. A reflow oven door panel mechanism with a limiting structure according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected with rubber pads (16) that are symmetrically distributed on the left and right, and the lower surface of the top plate (2) is also fixedly connected with rubber pads (16) that are symmetrically distributed on the left and right.

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