Printed circuit board baking oven

Abstract

The utility model discloses a printed circuit board baking oven, which belongs to the technical field of circuit board processing equipment and comprises an oven body, a stepping motor is mounted on the side edge of the oven body, a telescopic mechanism is mounted at the output end of the stepping motor, a clamping mechanism is mounted at the other end of the telescopic mechanism, and an oven door is mounted on the other side of the oven body. A ventilation shell is installed at the upper end of the box body, a fan is installed on one side of the upper end of the box body, the telescopic mechanism is arranged, the mechanism can conveniently adjust the position of the clamping mechanism, so that circuit boards with different lengths can be conveniently fixed, the circuit boards can be conveniently processed, and in addition, the mechanism is simple in structure, convenient to use and high in practicability. The electric heating net fixing mechanism is arranged, the electric heating net can be conveniently detached through the electric heating net fixing mechanism, the electric heating net can be conveniently detached and cleaned, and dust on the surface of the electric heating net is prevented from affecting the heating effect of the electric heating net.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board processing equipment, and in particular relates to a baking box for a printed circuit board. Background Art

[0002] A printed circuit board oven is a device used to process printed circuit boards. It is mainly used to coat barrier layers and UV protection films on printed circuit boards and dry them. The oven usually consists of a heating system, a temperature control system, a ventilation system and a conveying system.

[0003] Chinese patent application No. 202222984140.X discloses a printed circuit board baking oven, including a box body, a box door hinged on the front of the box body, the top of the inner wall of the box body is fixedly connected to an electric heating network through two connecting rods, a battery electrically connected to the electric heating network is fixedly installed on the left side of the top of the box body, a ventilation shell is fixedly installed on the top of the box body, three air outlet pipes interconnected with the bottom of the ventilation shell are fixedly connected, and a fan is fixedly installed on the right side of the top of the box body, and the air supply end of the fan is interconnected with the ventilation shell. The printed circuit board baking oven has a reasonable structural design and is easy to use. When baking the printed circuit board, it can achieve continuous rotation, thereby increasing the range of wind exposure and improving baking efficiency. It does not need to spend a lot of time working and can fully meet the use requirements.

[0004] Although the above-mentioned patent has realized the processing of printed circuit boards, the clamping device for the circuit board is not convenient for clamping and fixing circuit boards of different lengths; the electric heating network is not convenient for disassembly, and the dust adhered to its surface after long-term use will affect the heating effect of the electric heating network. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a printed circuit board baking oven, which is convenient for clamping and fixing circuit boards of different lengths and for disassembling and cleaning the electric heating network.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printed circuit board baking oven, comprising a box body, a stepper motor is installed on the side of the box body, a telescopic mechanism is installed on the output end of the stepper motor, a clamping mechanism is installed on the other end of the telescopic mechanism, a box door is installed on the other side of the box body, a ventilation shell is installed on the upper end of the box body, a fan is installed on one side of the upper end of the box body, a battery is installed on the other side of the upper end of the box body, an air outlet duct is installed on the lower end of the ventilation shell, a connecting rod is installed on the lower end of the top wall of the box body, a mounting plate is installed on the lower end of the connecting rod, an electric heating network is installed on the side of the mounting plate, the electric heating network and the mounting plate are fixedly connected by an electric heating network fixing mechanism, a plug is installed on the upper end of the electric heating network, and a socket is installed on the side of the connecting rod.

[0007] Preferably, the telescopic mechanism includes a turning handle, a rotating rod, a bevel gear 1, an outer rod, an inner rod, a screw and a bevel gear 2, wherein the outer rod is installed at the output end of the stepper motor, the screw is installed inside the outer rod, the inner rod is threadedly installed on the surface of the screw, bevel gear 2 is installed on the surface of one end of the screw, bevel gear 1 is meshingly installed on the side of bevel gear 2, the rotating rod is installed on the side of bevel gear 1, and the turning handle is installed on the other end of the rotating rod.

[0008] Preferably, the telescopic mechanism further comprises a limit block and a limit slot, wherein the limit block is installed on the inner wall of the outer rod, and the side of the inner rod is provided with a limit slot corresponding to the limit block.

[0009] Preferably, a bearing is installed at the connection between the rotating rod and the outer rod, and the lower end of the screw rod is rotatably connected to the outer rod through the bearing.

[0010] Preferably, the electric heating network fixing mechanism includes a card block, a fixing component, a card slot and a card hole, wherein a card block is installed on the side of the electric heating network, a fixing component is installed inside the card block, a card slot corresponding to the card block is opened on the side of the mounting plate, and a card hole is opened on the side of the card slot.

[0011] Preferably, the fixing assembly comprises a spring, a limit plate and a bayonet, wherein a spring is installed inside the side of the block, a limit plate is installed at the other end of the spring, and a bayonet is installed at the other end of the limit plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a telescopic mechanism, which can facilitate the adjustment of the position of the clamping mechanism, thereby facilitating the fixing of circuit boards of different lengths so as to facilitate the processing of the circuit boards. In addition, the mechanism has a simple structure and a relatively low manufacturing cost.

[0014] 2. The utility model is provided with an electric heating network fixing mechanism, which can facilitate the disassembly of the electric heating network, so as to disassemble and clean the electric heating network and prevent dust on the surface of the electric heating network from affecting the heating effect of the electric heating network. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a three-dimensional cutaway view of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the telescopic mechanism of the utility model;

[0018] Figure 4 It is a three-dimensional cutaway view of the telescopic mechanism of the utility model;

[0019] Figure 5 It is a three-dimensional diagram of the electric heating network fixing mechanism of the utility model;

[0020] Figure 6 It is an enlarged view of the fixing component of the utility model;

[0021] In the figure: 1. box body; 2. stepper motor; 3. box door; 4. fan; 5. ventilation shell; 6. battery; 7. telescopic mechanism; 71. turning handle; 72. rotating rod; 73. bevel gear one; 74. outer rod; 75. limit block; 76. limit slot; 77. inner rod; 78. screw; 79. bevel gear two; 8. clamping mechanism; 9. electric heating network fixing mechanism; 91. clamping block; 92. fixing assembly; 921. spring; 922. limit plate; 923. bayonet pin; 93. bayonet slot; 94. bayonet hole; 10. electric heating network; 11. mounting plate; 12. plug; 13. socket; 14. connecting rod; 15. air outlet pipe. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] See also Figure 1-6 The utility model provides the following technical solutions: a printed circuit board baking oven, comprising a box body 1, a stepper motor 2 is installed on the side of the box body 1, a telescopic mechanism 7 is installed at the output end of the stepper motor 2, a clamping mechanism 8 is installed at the other end of the telescopic mechanism 7, a box door 3 is installed on the other side of the box body 1, a ventilation shell 5 is installed on the upper end of the box body 1, a fan 4 is installed on one side of the upper end of the box body 1, a battery 6 is installed on the other side of the upper end of the box body 1, an air outlet 15 is installed at the lower end of the ventilation shell 5, a connecting rod 14 is installed at the lower end of the top wall of the box body 1, a mounting plate 11 is installed at the lower end of the connecting rod 14, an electric heating network 10 is installed on the side of the mounting plate 11, the electric heating network 10 and the mounting plate 11 are fixedly connected by an electric heating network fixing mechanism 9, a plug 12 is installed on the upper end of the electric heating network 10, and a socket 13 is installed on the side of the connecting rod 14.

[0025] Specifically, the telescopic mechanism 7 includes a turning handle 71, a rotating rod 72, a bevel gear 1 73, an outer rod 74, an inner rod 77, a screw 78 and a bevel gear 2 79, wherein the output end of the stepper motor 2 is installed with the outer rod 74, the inner part of the outer rod 74 is installed with the screw 78, the surface of the screw 78 is threadedly connected with the inner rod 77, the surface of one end of the screw 78 is installed with the bevel gear 2 79, the side of the bevel gear 2 79 is meshed with the bevel gear 1 73, the side of the bevel gear 1 73 is installed with the rotating rod 72, and the other end of the rotating rod 72 is installed with the turning handle 71.

[0026] By adopting the above technical solution, the position of the clamping mechanism 8 can be easily adjusted, thereby facilitating the clamping and fixing of circuit boards of different lengths.

[0027] Specifically, the telescopic mechanism 7 further includes a limit block 75 and a limit groove 76, wherein the limit block 75 is installed on the inner wall of the outer rod 74, and the side of the inner rod 77 is provided with a limit groove 76 corresponding to the limit block 75.

[0028] By adopting the above technical solution, the stability of the inner rod 77 during the sliding process can be improved.

[0029] Specifically, a bearing is installed at the connection between the rotating rod 72 and the outer rod 74, and the lower end of the screw rod 78 is rotatably connected to the outer rod 74 through the bearing.

[0030] By adopting the above technical solution, the gear meshing misalignment between bevel gear 1 73 and bevel gear 2 79 can be avoided.

[0031] The rotation of the handle 71 drives the rotating rod 72 to rotate, and the rotating rod 72 drives the bevel gear 1 73 to rotate, and the bevel gear 1 73 drives the bevel gear 2 79 to rotate, and the bevel gear 2 79 drives the screw 78 to rotate, and the screw 78 drives the inner rod 77 to slide outward by installing a limit block 75 on the inner wall of the outer rod 74, and a limit groove 76 corresponding to the limit block 75 is provided on the side of the inner rod 77, so that the stability of the sliding process of the inner rod 77 can be improved. At this time, the spacing between the two sets of clamping mechanisms 8 can be driven to change, so that the circuit board can be fixed by the clamping mechanism 8, and then by turning on the stepping motor 2, the stepping motor 2 drives the clamped circuit board to rotate, and then the wind is blown out by the fan 4 through the ventilation shell 5 and the air outlet pipe 15, and then the wind is heated by the electric heating network 10, so as to bake the circuit board;

[0032] Example 2

[0033] The difference between this embodiment and the first embodiment is that the electric heating network fixing mechanism 9 includes a block 91, a fixing assembly 92, a slot 93 and a hole 94, wherein the block 91 is installed on the side of the electric heating network 10, the fixing assembly 92 is installed inside the block 91, the side of the mounting plate 11 is provided with a slot 93 corresponding to the block 91, and the side of the slot 93 is provided with a hole 94,

[0034] By adopting the above technical solution, the electric heating network 10 can be easily disassembled and cleaned.

[0035] Specifically, the fixing assembly 92 includes a spring 921, a limiting plate 922 and a latch 923, wherein the spring 921 is installed inside the side of the block 91, the limiting plate 922 is installed at the other end of the spring 921, and the latch 923 is installed at the other end of the limiting plate 922.

[0036] By adopting the above technical solution, the electric heating network 10 can be easily installed and fixed.

[0037] When the present embodiment is in use, the dust adhered to the surface of the electric heating network 10 after long-term use will affect the heating effect of the electric heating network 10. By setting the side of the latch 923 to an arc-shaped structure, the plug 12 is first pulled out from the inside of the socket 13, and then the electric heating network 10 is pulled upward with force, so that the electric heating network 10 drives the block 91 to slide out from the inside of the slot 93. When the block 91 slides out of the slot 93, the latch 923 is driven to compress the limit plate 922 and the spring 921, so that the electric heating network 10 can be removed for cleaning. After cleaning, the electric heating network 10 can be installed to achieve effective heating of the electric heating network 10.

[0038] The structure and use principle of the box body 1, stepper motor 2, box door 3, fan 4, ventilation shell 5, battery 6, clamping mechanism 8, electric heating network 10 and air outlet duct 15 in the utility model have been disclosed in Chinese patent application No. 202222984140.X which discloses a printed circuit board baking oven. Its working principle is to fix the circuit board through the clamping mechanism 8, and then use the fan 4 to blow the wind through the ventilation shell 5 and the air outlet duct 15, and then heat the wind through the electric heating network 10 to bake the circuit board, and then drive the clamped and fixed circuit board to rotate by turning the stepper motor 2, so as to improve the drying effect of the circuit board.

[0039] The working principle and use process of the utility model are as follows: when the utility model is in use, the turning handle 71 is rotated according to the length of the circuit board, and the turning handle 71 drives the rotating rod 72 to rotate, the rotating rod 72 drives the bevel gear 1 73 to rotate, the bevel gear 1 73 drives the bevel gear 2 79 to rotate, the bevel gear 2 79 drives the screw 78 to rotate, and the screw 78 drives the inner rod 77 to slide outward. By installing a limiting block 75 on the inner wall of the outer rod 74 and providing a limiting groove 76 corresponding to the limiting block 75 on the side of the inner rod 77, the stability of the sliding process of the inner rod 77 can be improved. At this time, the spacing between the two sets of clamping mechanisms 8 can be driven to change, so that the circuit board can be fixed by the clamping mechanism 8, and then by turning on the stepper motor 2, the stepper motor 2 drives the clamped The circuit board rotates, and the wind is blown out through the ventilation shell 5 and the air outlet pipe 15 by the fan 4, and then the wind is heated by the electric heating network 10, so as to bake the circuit board; since the dust adhered to the surface of the electric heating network 10 after long-term use will affect the heating effect of the electric heating network 10, by setting the side of the pin 923 to an arc structure, firstly, the plug 12 is pulled out from the inside of the socket 13, and then the electric heating network 10 is pulled upward by force, so that the electric heating network 10 drives the block 91 to slide out from the inside of the slot 93. When the block 91 slides out of the slot 93, it will drive the pin 923 to compress the limit plate 922 and the spring 921, so that the electric heating network 10 can be removed for cleaning. After cleaning, the electric heating network 10 can be installed again to achieve effective heating of the electric heating network 10.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printed circuit board baking oven, comprising a box body, characterized in that: A stepper motor is installed on the side of the box, a telescopic mechanism is installed on the output end of the stepper motor, a clamping mechanism is installed on the other end of the telescopic mechanism, a box door is installed on the other side of the box, a ventilation shell is installed on the upper end of the box, a fan is installed on one side of the upper end of the box, a battery is installed on the other side of the upper end of the box, an air outlet duct is installed on the lower end of the ventilation shell, a connecting rod is installed on the lower end of the top wall of the box, a mounting plate is installed on the lower end of the connecting rod, an electric heating network is installed on the side of the mounting plate, the electric heating network and the mounting plate are fixedly connected by an electric heating network fixing mechanism, a plug is installed on the upper end of the electric heating network, and a socket is installed on the side of the connecting rod.

2. A printed circuit board baking oven according to claim 1, characterized in that: The telescopic mechanism includes a turning handle, a rotating rod, a bevel gear 1, an outer rod, an inner rod, a screw and a bevel gear 2, wherein the outer rod is installed at the output end of the stepping motor, the screw is installed inside the outer rod, the inner rod is installed on the surface of the screw in threaded connection, the bevel gear 2 is installed on the surface of one end of the screw, the bevel gear 1 is meshed and installed on the side of the bevel gear 2, the rotating rod is installed on the side of the bevel gear 1, and the turning handle is installed on the other end of the rotating rod.

3. A printed circuit board baking oven according to claim 2, characterized in that: The telescopic mechanism further comprises a limit block and a limit groove, wherein the limit block is installed on the inner wall of the outer rod, and the side of the inner rod is provided with a limit groove corresponding to the limit block.

4. A printed circuit board baking oven according to claim 2, characterized in that: A bearing is installed at the connection between the rotating rod and the outer rod, and the lower end of the screw rod is rotatably connected to the outer rod through the bearing.

5. A printed circuit board baking oven according to claim 1, characterized in that: The electric heating network fixing mechanism includes a card block, a fixing component, a card slot and a card hole, wherein a card block is installed on the side of the electric heating network, a fixing component is installed inside the card block, a card slot corresponding to the card block is opened on the side of the mounting plate, and a card hole is opened on the side of the card slot.

6. A printed circuit board baking oven according to claim 5, characterized in that: The fixing assembly includes a spring, a limit plate and a bayonet, wherein a spring is installed inside the side of the block, a limit plate is installed at the other end of the spring, and a bayonet is installed at the other end of the limit plate.

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