Heating mechanism of reflow soldering machine

Abstract

The utility model discloses a reflow soldering machine heating mechanism which comprises a heating furnace body and a plurality of air heaters arranged at the top of the heating furnace body, a plurality of overhaul notches are formed in the front surface of the heating furnace body, and a plurality of overhaul cover plates covering the overhaul notches are installed on the front surface of the heating furnace body. A quick disassembly and assembly structure is arranged between the heating furnace body and the access cover plate; the quick disassembly and assembly structure comprises two seat blocks fixed to the front surface of the heating furnace body, and the two seat blocks are located at the top and the bottom of the access cover plate correspondingly. According to the utility model, the reflow soldering machine heating mechanism in the prior art is improved and optimized, and the quick disassembly and assembly structure and the positioning structure are designed between the heating furnace body and the access cover plate, so that the disassembly and assembly convenience of the access cover plate can be greatly improved, and the problem that the access cover plate in the original heating mechanism is inconvenient to disassemble and assemble is solved; therefore, convenience is brought to subsequent overhaul and maintenance of the interior of the heating furnace body by operators.

Description

Technical Field

[0001] The utility model belongs to the technical field of reflow soldering machines, and in particular relates to a heating mechanism for a reflow soldering machine. Background Art

[0002] A reflow soldering machine is also called a reflow soldering machine or a "reflow oven". It provides a heating environment to melt the solder paste by heating so that the surface mounted components and the PCB pads can be reliably combined together through the solder paste alloy. The heating mechanism of the reflow soldering machine refers to a heating furnace installed on the conveyor belt of the reflow soldering machine. For example, the existing patent with the publication number CN2774077Y discloses a "hot air infrared composite heating device for a reflow soldering machine, which is composed of a motor, a wind impeller, an outer cavity, an inner cavity, an electric heater, an air inlet pipe, an air outlet pipe, a hot air exhaust channel and an infrared heater". It can be seen that what is described in the application is a common reflow soldering machine heating mechanism. The components to be heated will enter the heating furnace under the action of the conveyor belt, and the electric heater and the fan in the heating furnace will blow out hot air to heat the components passing through.

[0003] However, when the reflow soldering machine heating mechanism in the above patent is actually used, a plurality of inspection gaps for subsequent inspection and maintenance will be opened on the outer shell, and an inspection cover will be installed. However, since the inspection cover on the existing reflow soldering machine heating mechanism is mostly fixed with multiple bolts or screws, it will take a lot of time to disassemble and assemble these bolts and screws during the later inspection and maintenance, and the inspection cover cannot be disassembled and assembled quickly, which reduces the convenience of later maintenance of the entire reflow soldering machine heating mechanism. Therefore, the utility model needs to improve the reflow soldering machine heating mechanism in the prior art to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a heating mechanism for a reflow soldering machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reflow soldering machine heating mechanism, comprising a heating furnace body and a plurality of hot air blowers arranged on the top of the heating furnace body, the air outlet end of the hot air blower penetrates the inner side of the heating furnace body, and a plurality of electric heating rods corresponding to the hot air blowers are installed on the inner side of the heating furnace body, a plurality of maintenance notches are opened on the front surface of the heating furnace body, and a plurality of maintenance cover plates covering the maintenance notches are installed on the front surface of the heating furnace body, and a quick disassembly structure is arranged between the heating furnace body and the maintenance cover plate;

[0006] The quick-disassembly structure comprises two seat blocks fixed on the front surface of the heating furnace body, the two seat blocks are respectively located at the top and bottom of the inspection cover plate, the front surface of the seat block is movably installed with a T-shaped movable shaft block, and the surface of the T-shaped movable shaft block is rotatably sleeved with a strip pressure plate, the end of the strip pressure plate extends to the front surface of the inspection cover plate and is in tight contact with the inspection cover plate, the quick-disassembly structure also comprises an inner groove opened inside the seat block, an inner slide plate is slidably arranged in the inner groove, two springs are installed between the inner slide plate and the inner wall of the inner groove, the inner end of the T-shaped movable shaft block passes through the inner groove and is fixedly connected to the inner slide plate, the side surface of the inner slide plate is provided with two circular assembly grooves corresponding to the springs, one end of the spring is embedded and installed in the circular assembly groove, the quick-disassembly structure also comprises a limit card block and a limit card hole, the end surface of the strip pressure plate passes through the limit card hole, and the front surface of the inspection cover plate is fixed with two limit card blocks corresponding to the limit card hole, and the limit card block is inserted into the limit card hole.

[0007] Preferably, a positioning structure is further provided between the heating furnace body and the inspection cover plate, the positioning structure comprising a positioning rubber seat and a positioning hole, the positioning rubber seat is fixed to the front surface of the heating furnace body, the four corners of the inspection cover plate are provided with positioning holes corresponding to the positioning rubber seat, the positioning rubber seat is inserted into the positioning hole, two positioning protrusions are provided on the surface of the positioning rubber seat, the inner wall of the positioning hole is provided with an annular positioning groove corresponding to the positioning protrusion, the positioning protrusion is embedded in the annular positioning groove, the positioning rubber seat and the positioning protrusion are an integrated structure, and a deformation cavity is provided inside the positioning rubber seat, the position of which corresponds to the positioning protrusion.

[0008] Preferably, both left and right ends of the heating furnace body are provided with inlets and outlets.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model improves and optimizes the heating mechanism of the reflow soldering machine in the prior art, and designs a quick-disassembly and assembly structure and a positioning structure between the heating furnace body and the inspection cover plate, which can greatly improve the convenience of disassembly and assembly of the inspection cover plate, and solve the problem of inconvenient disassembly and assembly of the inspection cover plate in the original heating mechanism, thereby bringing convenience to the operator's subsequent inspection and maintenance of the interior of the heating furnace body, and improving the convenience of later maintenance of the entire reflow soldering machine heating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of the utility model;

[0011] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A area;

[0012] Figure 3It is a side sectional view of the quick disassembly and assembly structure of the utility model;

[0013] Figure 4 It is a side sectional view of the positioning structure of the utility model;

[0014] In the figure: 1. Heating furnace body; 2. Inlet and outlet; 3. Hot air blower; 4. Inspection cover; 51. Seat block; 52. T-shaped movable shaft block; 53. Strip pressure plate; 54. Limit block; 55. Limit hole; 56. Inner groove; 57. Inner slide plate; 58. Spring; 6. Positioning structure; 61. Positioning rubber seat; 62. Positioning hole; 63. Positioning protrusion; 64. Annular positioning groove. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Example 1

[0017] See also Figures 1 to 3 , is the first embodiment of the utility model, which provides a technical solution: a reflow soldering machine heating mechanism, comprising a heating furnace body 1 and a plurality of hot air blowers 3 arranged on the top of the heating furnace body 1, the air outlet end of the hot air blower 3 penetrates the inner side of the heating furnace body 1, and a plurality of electric heating rods corresponding to the hot air blowers 3 are installed on the inner side of the heating furnace body 1, and an inlet and outlet 2 are provided at both ends of the heating furnace body 1. After the heating furnace body 1 is subsequently fixed on the conveyor belt of the reflow soldering machine, the inlet and outlet 2 at both ends can be used for the smooth entry and exit of the components to be heated. When these components to be heated enter the heating furnace body 1 and pass through, the electric heating rods and the hot air blowers 3 in the heating furnace body 1 will work to blow out a hot air flow, thereby realizing hot air heating of these components to be heated;

[0018] A plurality of maintenance gaps are provided on the front surface of the heating furnace body 1, and a plurality of maintenance covers 4 covering the maintenance gaps are installed on the front surface of the heating furnace body 1. The maintenance covers 4 can be removed later and then the inside of the heating furnace body 1 can be inspected and maintained through the maintenance gaps. A quick disassembly structure is provided between the heating furnace body 1 and the maintenance covers 4.

[0019] The quick-disassembly structure includes two seat blocks 51 fixed on the front surface of the heating furnace body 1. The two seat blocks 51 are respectively located at the top and bottom of the inspection cover 4. A T-shaped movable shaft block 52 is movably installed on the front surface of the seat block 51, and a strip pressure plate 53 is rotatably sleeved on the surface of the T-shaped movable shaft block 52. The end of the strip pressure plate 53 extends to the front surface of the inspection cover 4 and is in tight contact with the inspection cover 4. Subsequently, the strip pressure plate 53 only needs to be rotated away from the front surface of the inspection cover 4 to quickly release the limit on the inspection cover 4, so as to realize the quick disassembly and assembly of the inspection cover 4, which is convenient for operators to inspect and maintain the inside of the heating furnace body 1; quick disassembly The assembly structure also includes an inner groove 56 provided inside the seat block 51, an inner slide plate 57 is slidably provided inside the inner groove 56, two springs 58 are installed between the inner slide plate 57 and the inner wall of the inner groove 56, the inner end of the T-shaped movable shaft block 52 passes through the inner groove 56 and is fixedly connected to the inner slide plate 57, so that the strip pressure plate 53 can be stably pressed on the front surface of the inspection cover 4 under the pushing action of the spring 58, and two circular assembly grooves corresponding to the spring 58 are provided on the side of the inner slide plate 57, one end of the spring 58 is embedded and installed in the circular assembly groove, which can improve the installation stability of the spring 58 and prevent the spring 58 from deflecting. The quick disassembly and assembly structure can also The limit card block 54 and the limit card hole 55 are included. The end surface of the strip pressure plate 53 is penetrated by the limit card hole 55. The front surface of the inspection cover 4 is fixed with two limit card blocks 54 corresponding to the limit card holes 55. The limit card blocks 54 are inserted into the limit card holes 55, so that the end of the strip pressure plate 53 can be stably pressed on the surface of the inspection cover 4 without slipping easily, ensuring the pressing stability of the strip pressure plate 53 on the inspection cover 4, thereby ensuring the installation stability of the inspection cover 4. If the inspection cover 4 is to be removed later and the internal components of the heating furnace body 1 are to be inspected and maintained, it is only necessary to first remove the strip pressure plate 53 with The strip pressure plate 53 is separated from the limiting block 54. At this time, the strip pressure plate 53 can be rotated around the T-shaped movable shaft block 52, so that the end of the strip pressure plate 53 is rotated and moved away from the front of the inspection cover 4, and the inspection cover 4 is no longer blocked and limited. At this time, the operator can directly remove the inspection cover 4 from the front surface of the heating furnace body 1, which greatly improves the convenience of disassembly and assembly of the inspection cover 4 and improves the overall maintenance convenience of the heating mechanism of the reflow soldering machine in the later stage.

[0020] Example 2

[0021] See also Figures 1 to 4 , which is the second embodiment of the utility model, is based on the previous embodiment, and the difference is that the positioning structure 6 can play an effective positioning effect when and after the inspection cover 4 is installed.

[0022] Specifically, a positioning structure 6 is further provided between the furnace body 1 of the heating furnace and the inspection cover 4. The positioning structure 6 includes a positioning rubber seat 61 and a positioning hole 62. The positioning rubber seat 61 is glued and fixed to the front surface of the furnace body 1 of the heating furnace. Positioning holes 62 corresponding to the positioning rubber seats 61 are provided at the four corners of the inspection cover 4. The positioning rubber seat 61 is inserted into the positioning hole 62, so that the inspection cover 4 has good stability after being pressed on the surface of the heating furnace body 1 and will not slip on the surface of the heating furnace body 1. Two positioning protrusions 63 are provided on the surface of the positioning rubber seat 61. An annular positioning groove 64 corresponding to the positioning protrusion 63 is provided on the inner wall of the positioning hole 62. The positioning protrusion 63 is embedded in the annular positioning groove 64, so that after the positioning rubber seat 61 is squeezed into the positioning hole 62, the positioning protrusion 63 will also be squeezed into the annular positioning groove 64, thereby playing a certain auxiliary limiting role for the inspection cover 4, which is convenient for the operator to use the strip pressure plate 53 to press and limit the inspection cover 4 later.

[0023] Among them, the positioning rubber seat 61 and the positioning protrusion 63 are an integrated structure, both of which are made of fluororubber material and will undergo elastic deformation when squeezed. A deformation cavity corresponding to the positioning protrusion 63 is opened inside the positioning rubber seat 61. The design of the deformation cavity allows the positioning protrusion 63 to have sufficient deformation space when squeezed.

[0024] The structural principles of the heating furnace body 1 of the present invention are all known technologies disclosed in existing patents. For details, please refer to the existing patent with publication number CN2774077Y, which will not be described in detail here.

[0025] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reflow soldering machine heating mechanism, comprising a heating furnace body (1) and a plurality of hot air blowers (3) arranged on the top of the heating furnace body (1), the air outlet end of the hot air blower (3) penetrates the inner side of the heating furnace body (1), and a plurality of electric heating rods corresponding to the hot air blowers (3) are installed on the inner side of the heating furnace body (1), a plurality of maintenance notches are opened on the front surface of the heating furnace body (1), and a plurality of maintenance cover plates (4) covering the maintenance notches are installed on the front surface of the heating furnace body (1), characterized in that: A quick disassembly structure is provided between the heating furnace body (1) and the inspection cover plate (4); The quick disassembly structure comprises two seat blocks (51) fixed on the front surface of the heating furnace body (1), the two seat blocks (51) are respectively located at the top and bottom of the inspection cover (4), a T-shaped movable shaft block (52) is movably mounted on the front surface of the seat block (51), and a strip pressure plate (53) is rotatably sleeved on the surface of the T-shaped movable shaft block (52), and the end of the strip pressure plate (53) extends to the front surface of the inspection cover (4) and is in pressing contact with the inspection cover (4); A positioning structure (6) is also provided between the heating furnace body (1) and the inspection cover plate (4).

2. A heating mechanism for a reflow soldering machine according to claim 1, characterized in that: The quick-disassembly structure also includes an inner groove (56) provided inside the seat block (51), an inner slide plate (57) being slidably disposed inside the inner groove (56), two springs (58) being installed between the inner slide plate (57) and the inner wall of the inner groove (56), and the inner end of the T-shaped movable shaft block (52) passing through the inner groove (56) and being fixedly connected to the inner slide plate (57).

3. A heating mechanism for a reflow soldering machine according to claim 2, characterized in that: Two circular assembly grooves corresponding to the springs (58) are provided on the side surface of the inner slide plate (57), and one end of the spring (58) is embedded and installed in the circular assembly groove.

4. The heating mechanism of a reflow soldering machine according to claim 1, characterized in that: The quick disassembly and assembly structure further comprises a limit card block (54) and a limit card hole (55); the end surface of the strip pressure plate (53) is penetrated by a limit card hole (55); the front surface of the inspection cover plate (4) is fixed with two limit card blocks (54) corresponding to the limit card holes (55); the limit card blocks (54) are inserted into the limit card holes (55).

5. The heating mechanism of a reflow soldering machine according to claim 1, characterized in that: The positioning structure (6) comprises a positioning rubber seat (61) and a positioning hole (62); the positioning rubber seat (61) is fixed to the front surface of the heating furnace body (1); positioning holes (62) corresponding to the positioning rubber seat (61) are provided at four corners of the inspection cover (4); and the positioning rubber seat (61) is inserted into the positioning hole (62).

6. A heating mechanism for a reflow soldering machine according to claim 5, characterized in that: The surface of the positioning rubber seat (61) is provided with two positioning protrusions (63), the inner wall of the positioning hole (62) is provided with an annular positioning groove (64) corresponding to the positioning protrusions (63), and the positioning protrusions (63) are embedded in the annular positioning groove (64).

7. A heating mechanism for a reflow soldering machine according to claim 6, characterized in that: The positioning rubber seat (61) and the positioning protrusion (63) are an integrated structure, and a deformation cavity corresponding to the positioning protrusion (63) is provided inside the positioning rubber seat (61).

8. A heating mechanism for a reflow soldering machine according to claim 1, characterized in that: The left and right ends of the heating furnace body (1) are both provided with an inlet and outlet (2).

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