Eight-temperature-zone channel type intelligent reflow soldering machine with main chain transmission and auxiliary net belt transmission

Abstract

The utility model relates to an eight-temperature-zone channel-type intelligent reflow soldering machine with chain transmission as a main part and mesh belt transmission as an auxiliary part, belongs to the technical field of surface mounting (SMT), and solves the problems that most of existing channel-type reflow soldering machines cannot be in butt joint with full-automatic equipment and cannot be spliced into a full-automatic production line, products need to be transferred manually, and the production efficiency is high. Therefore, the production speed is reduced, resources are wasted, and industrial large-scale performance cannot be realized. In order to solve the problem, the eight-temperature-zone channel type intelligent reflow soldering machine which takes chain transmission as a main mode and takes net belt transmission as an auxiliary mode is designed, and the machine has the advantages of being capable of achieving automatic production, suitable for large-scale batch production, capable of saving time and cost and capable of improving production efficiency besides the basic functions.

Description

Technical Field

[0001] The technical field of this machine is the surface mount field (SMT). Background Art

[0002] The channel type reflow ovens on the market are popular among users for their economical, high efficiency, high precision, and multiple curves to choose from. With the continuous development of industrial technology, people pay more attention to the large-scale and energy-saving performance of industrial products. At present, most of the channel type reflow ovens cannot be connected to fully automatic equipment, and cannot be spliced ​​into a fully automatic production line. They need to be manually transferred, which reduces the production speed, wastes resources, and cannot achieve industrial large-scale production. This series of problems restricts its development in the market, so designing a channel type reflow oven that can be spliced ​​into a production line structure has become a design problem that must be faced.

[0003] In order to solve a series of problems such as the inability of ordinary channel reflow ovens to achieve industrial scale and the inability to save resources, we designed this intelligent channel reflow oven that can be spliced ​​into a production line structure with a chain transmission structure as the main structure and a mesh belt transmission structure as the auxiliary structure. It can be connected to fully automatic equipment, and there is no need to transfer products manually. The width between the left and right 04C chains can also be adjusted according to the width of the PCB board; there is a type B mesh belt under the chain track, so that the product will not burn even if it falls. In addition to the basic functions, this machine can also be automated, suitable for large-scale batch production, saving time and cost, and improving production efficiency; the heating method used can save energy to the greatest extent and reduce the impact on the environment. This new product effectively fills the market gap and has a broad market prospect. Summary of the invention

[0004] Technical solution:

[0005] (1). In the chain transmission mechanism of this design, the chain numbers used are 04C and 06B. The chain pitch of this specification is small and saves space;

[0006] (2) The use of chain drive can make it easier to connect to the docking station and access the production line. At the same time, chain drive is more reliable, without elastic sliding and slipping, making the work more reliable and the efficiency relatively high.

[0007] (3). This design uses a 57 stepper motor with a reducer as the power source. This structure has a small overall size and saves installation space.

[0008] (4) In this design, 6061 aluminum profiles are used as the chain drive track. The strength of aluminum profiles in high temperature environments is much higher than that of ordinary steel, and they can still maintain good performance in high temperature environments.

[0009] (5). In this design, a type B mesh belt structure is adopted as an auxiliary, so that even if products fall during the operation of the machine, it will not burn out.

[0010] (6). In this design, a temperature zone structure of "5 on the top and 3 on the bottom" is adopted, making the operation of the reflux curve of the machine smoother.

[0011] (7). The shield is equipped with 5 high-temperature stirring fans to balance the temperature of the upper box body.

[0012] (8). The upper and lower box bodies are provided with box body enclosing plates for easy heat preservation. The box body enclosing plates are added with partition plates, which can better isolate the heat insulation cotton and better protect the operators from the harm of rock wool glass fiber.

[0013] Technical effects:

[0014] The in-line reflux soldering machine has the advantages of being economical, efficient, highly precise, and having multiple curves to choose from. However, most in-line reflux soldering machines are used independently and require specialized personnel to operate. There are common problems such as the inability to achieve large-scale industrial production and the inability to save resources. To improve this defect, an eight-temperature-zone in-line intelligent reflux soldering machine mainly with a chain drive structure and supplemented by a mesh belt drive structure is designed.

[0015] The eight-temperature-zone in-line intelligent reflux soldering machine mainly with a chain drive and supplemented by a mesh belt drive has two drive structures. The chain drive structure can be connected to the production line, eliminating the need for manual product transfer. The width between the left and right 04C chains can also be adjusted according to the width of the PCB board. The mesh belt drive structure can catch the fallen products, and even if the products fall, it will not burn out. It realizes large-scale industrial production and the function of saving resources. Brief description of the drawings

[0016] Figure 1 is a top view structural schematic diagram of the present utility model, showing the independent external cooling mechanism (15);

[0017] Figure 2 is a side view structural schematic diagram of the present utility model, showing the 04C chain (1), 04C 21-tooth sprocket (2), hand-operated screw handwheel (3), chain track (4), base (5), shield (6), industrial control touch screen module (13), lower box body (17);

[0018] Figure 3 is a principle structural schematic diagram of the present utility model, showing the type B mesh belt roller (7), type B mesh belt (8), 57 stepping motor with a reducer (9), 06B chain (10), 06B 17-tooth sprocket (11), 06B 12-tooth sprocket (12), one driving shaft (20), three driven shafts (21);

[0019] Figure 4This is a schematic diagram of the back structure of the present utility model, showing the control cabinet (14);

[0020] Figure 5 is Figure 2 a partial cross-sectional view, showing the upper box body (16), the high-temperature resistant stirring fan (18), and the centering impeller (19). Specific embodiments

[0021] I. Structural composition of the present utility model

[0022] The external structure of this equipment consists of a protective cover (6), an upper box body (16), a lower box body (17), a base (5), a control cabinet (14), an independent external cooling mechanism (15), an industrial control touch screen module (13), and working status indicator lights. Inside the protective cover (6), there is a mechanical structure channel for specifically collecting welding by-products, and on the right side is the independent external cooling mechanism (15). Inside the protective cover (6) is the upper box body (16), which is composed of five heating temperature zones. Each temperature zone has an internal temperature measuring sensor and a high-temperature resistant stirring fan (18) that is convenient to disassemble. A centering impeller (19) is installed on the shaft of the high-temperature resistant stirring fan. Heat insulation plates are arranged between each temperature zone, and heat preservation layers are arranged inside the upper and lower box bodies. The emergency stop button and working status indicator lights are placed on the left front side of the protective cover (6). The industrial control touch screen module (13) is placed at the left end of the protective cover (6). The base (5) includes the lower box body (17), a conveying system, and the control cabinet (14). The lower box body (17) is composed of three heating temperature zones, and each temperature zone has an internal temperature measuring sensor. Heating lamps are arranged inside the upper and lower box bodies, and the heating lamps are fixed through heating lamp fixing seats. The conveying system consists of a 57 stepping motor (9) with a reducer, a 04C21 toothed sprocket (2), a 06B12 toothed sprocket (12), a stepping motor driver, a B-type mesh belt roller (7), a B-type mesh belt (8), a 04C chain (1), a 06B chain (10), a main shaft (20), and three driven shafts (21). The main shaft and the driven shafts are all installed on bearing seats. The 57 stepping motor (9) with a reducer, the 06B12 toothed sprocket (12), the 06B chain (10), and the 06B17 toothed sprocket (11) drive the main shaft (20) and the three driven shafts (21) to rotate, and make the B-type mesh belt (8) and the 04C chain (1) drive simultaneously. The control cabinet (14) is located at the back of the base (5), and is internally equipped with an AC contactor, a fuse, a relay, a main board, a switching power supply, a stepping motor driver, and a zero row to control the machine to perform the reflow soldering work.

[0023] II. Operating method and mechanism action principle of the present utility model

[0024] The purpose of the present utility model is to design a channel-type intelligent reflow soldering machine that can achieve large-scale industrial production and save resources, and solve a series of problems such as the inability of ordinary channel-type reflow soldering machines to achieve large-scale industrial production and save resources. To improve this defect, an eight-zone channel-type intelligent reflow soldering machine mainly based on a chain drive structure and supplemented by a mesh belt drive structure is designed.

[0025] The channel-type reflow soldering machine of the present utility model with two drive structures adopts a unique structural design inside. It uses infrared heating method and can solder LED lamp beads and other types of circuit boards according to the standard temperature curve; it can be heated and soldered according to the national standard curve of the solder, and the welding curve can be adjusted independently for different solder pastes or PCB boards. The width between the left and right 04C chains can also be adjusted according to the width of the PCB board. The PCB circuit board enters from the left side of the reflow oven through the chain drive structure, passes through the eight heating zones in the reflow oven in sequence, and finally completes the entire welding process through the cooling of an independent external cooling mechanism.

[0026] The upper and lower boxes of this equipment are provided with rock wool thermal insulation layers, which well separate the temperature change inside the machine from the external environment, ensuring temperature stability and significantly improving the temperature uniformity performance compared with traditional channel-type reflow soldering machines. There are a total of eight heating zones in the upper and lower boxes, and each zone has an internal temperature sensor. The temperature sensor wire is used to measure the real-time temperature inside the machine cavity to ensure the reliability of temperature measurement. During a welding cycle, the welding by-products generated can be centrally collected through the independent smoke collection channel structure of the shield, and then discharged through an external aluminum foil chimney to avoid indoor air pollution and is beneficial to environmental protection.

[0027] The beneficial effects of the present utility model are as follows: The chain drive structure can be connected to the production line without manual product transfer; the width between the left and right 04C chains can also be adjusted according to the width of the PCB board; the mesh belt drive structure can catch the dropped products, and even if the products fall, they will not be burned out; it realizes large-scale industrial production and the function of saving resources. Moreover, the channel-type reflow soldering machine of the present utility model also has other advantages, such as it can be heated and soldered according to the national standard curve of the solder; the welding curve can be modified according to the welding requirements; it is beneficial to environmental protection, etc.

Claims

1. An eight-temperature-zone channel-type intelligent reflow soldering machine with chain drive as the main drive and mesh belt drive as the auxiliary drive, characterized in that: The invention is composed of a protective cover (6), an upper box (16), a lower box (17), a base (5), a control cabinet (14), an independent external cooling mechanism (15), an industrial control touch screen module (13), and a working status indicator light; a mechanical structure channel for collecting welding byproducts is provided on the inner side of the protective cover (6), and the independent external cooling mechanism (15) is provided on the right side; the upper box (16) is provided inside the protective cover (6), and the upper box (16) is composed of five heating temperature zones, each of which has a built-in temperature sensor and A high temperature resistant stirring fan (18) is convenient to disassemble, a converging impeller (19) is installed on the shaft of the high temperature resistant stirring fan, a heat insulation board is arranged between each temperature zone, a heat insulation layer is arranged inside the upper and lower boxes, an emergency stop button and a working status indicator light are placed on the left front side of the protective cover (6), an industrial control touch screen module (13) is placed on the left end of the protective cover (6), the base (5) includes a lower box (17), a transmission system, and a control cabinet (14), the lower box (17) is composed of three heating temperature zones, and each temperature zone has a built-in temperature measuring device The sensor, the upper and lower boxes are each provided with a heating lamp tube, and the heating lamp tube is fixed by a heating lamp tube fixing seat. The transmission system is composed of a 57 stepper motor (9) with a reducer, a 04C21 toothed sprocket (2), a 06B12 toothed sprocket (12), a stepper motor driver, a type B mesh belt roller (7), a type B mesh belt (8), a 04C chain (1), a 06B chain (10), a driving shaft (20) and three passive shafts (21). The driving shaft and the passive shaft are both installed on the bearing seat. The 57 stepper motor (9) of the reducer, the 06B12 tooth sprocket (12), the 06B chain (10), and the 06B17 tooth sprocket (11) drive a driving shaft (20) and three passive shafts (21) to rotate, and make the type B mesh belt (8) and the 04C chain (1) drive at the same time. The control cabinet (14) is located at the back of the base (5), and is equipped with an AC contactor, a fuse, a relay, a main board, a switching power supply, a stepper motor driver, and a zero row to control the machine to perform reflow soldering.

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