Automatic conveying frame for circuit board baking

Abstract

The utility model discloses an automatic conveying rack for baking a circuit board, relates to the technical field of circuit board processing, and solves the problems that the existing equipment has many operation procedures and is relatively tedious, the heating of two surfaces of the circuit board is not uniform enough, a coating on the front surface of the circuit board is inevitably touched when the circuit board is transferred for multiple times in the transferring process, the yield is easily reduced, and the product quality is influenced. And the production efficiency of batch circuit boards is reduced. Comprising a rack and a conveying assembly arranged in the rack, and the conveying assembly comprises a plurality of chain plates; the baking bin is erected on the rack, an electric heating pipe is connected in the baking bin, and a plurality of fans are arranged on the top surface of the baking bin; a clamping and fixing assembly; the drying and conveying device integrates drying and conveying and is suitable for drying coating layers of circuit boards in different batches on a production line, the circuit boards are uniformly heated, the coating layers can be effectively colored more uniformly, repeated transfer is not needed, production procedures are reduced, and the working efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board processing, and in particular relates to an automatic conveying rack for baking circuit boards. Background Art

[0002] During the production of the circuit board, in order to protect the circuit on the front of the circuit board, it is necessary to apply ink as a protective layer on the part of the front of the circuit board that does not need to be soldered, and bake the circuit board after coating. However, since the ink takes a long time to dry naturally and the drying process is slow, the circuit board after printing the ink is usually baked to shorten the drying time.

[0003] At present, the traditional baking method is usually to use a baking oven for baking. The staff needs to take the circuit board out of the production line, transfer it to the baking oven for baking, and place it on a conveyor belt for transportation after baking. However, the above operation procedures are complicated and may lead to uneven heating on both sides of the circuit board. In addition, multiple transfers during the transportation process will inevitably touch the coating on the front of the circuit board, which may lead to a decrease in the yield rate and reduce the production efficiency of batch circuit boards.

[0004] Therefore, based on the above problems, we designed an automatic conveyor rack for baking circuit boards. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an automatic conveyor rack for baking circuit boards, which solves the technical problems that the existing equipment has many operating procedures, which are relatively cumbersome, and easily lead to uneven heating of both sides of the circuit board, and that the coating on the front of the circuit board will inevitably be touched during multiple transfers during the transfer process, which easily leads to a decrease in the yield rate and reduces the production efficiency of batch circuit boards.

[0006] To achieve the above-mentioned purpose, according to the embodiment of the first aspect of the utility model, an automatic conveyor rack for baking circuit boards is provided, comprising a frame and a conveyor assembly arranged in the frame, wherein the conveyor assembly comprises a plurality of chain plates;

[0007] A baking chamber is mounted on the frame, an electric heating tube is connected to the baking chamber, and a plurality of fans are arranged on the top surface of the baking chamber;

[0008] A clamping and fixing assembly, the clamping and fixing assembly includes a clamping seat connected to each chain plate, a clamping plate 1 and a clamping plate 2 connected to the port of each clamping seat, a group of guide wheels connected to the inner wall surfaces of the clamping plates 1 and 2, and a spring structure arranged between the clamping plates 1 and 2 and the inner wall of the clamping seat.

[0009] A further improvement is that the spring structure includes a plurality of mounting grooves arranged on both sides of the inner wall of the clamping seat, a compression spring arranged in each mounting groove, and a compression column arranged on the back of the first and second clamping plates and correspondingly connected to the compression springs in the mounting grooves.

[0010] A further improvement is that the conveying assembly also includes a plurality of conveying rollers rotatably arranged in the frame, two sprockets mounted on each conveying roller and chains laid on the two groups of sprockets, and a plurality of chain plates are respectively connected between the two groups of chains to be responsible for conveying the circuit boards.

[0011] A further improvement is that both sides of the baking bin are rotatably provided with bin doors, and the inner wall surface of the bin door and both sides of the baking bin are provided with adsorption magnetic strips, which are used for closing and opening the bin door.

[0012] A further improvement is that each set of guide wheels is made of rubber material and has the same size.

[0013] A further improvement is that a plurality of grooves are arranged in sequence on the top surface of the baking bin in the conveying direction, the shell of the fan is mounted on the baking bin by fastening screws, and the lower protruding part of the shell is stuck in the groove, and the fan is used to direct the heat generated by the electric heating tube to the circuit board, so that the coating layer on the circuit board can be dried quickly.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The utility model inserts each circuit board coated with an ink protective layer into each clamping seat. When the circuit board is inserted, the pressure column on the back of the clamping plate 1 and the clamping plate 2 compresses the compression spring in the installation groove, so that the compression spring generates a rebound force after being compressed, and the guide wheel is tightly pressed against the two sides of the circuit board, so as to adapt to the clamping of circuit boards with different thicknesses.

[0016] (2) The utility model generates heat by starting the electric heating tube, and the fan blows the heat generated by the electric heating tube to the circuit board, so that the coating layers on both sides of the circuit board can be dried quickly. The utility model integrates drying and conveying into one, which is suitable for drying the coating layers of different batches of circuit boards on the production line. The circuit boards are evenly heated, which can effectively make the coloring of the coating layers more uniform. There is no need for repeated transportation, which reduces the production process and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This utility model Figure 2Enlarged structural diagram at A in the middle.

[0020] Markings in the figure:

[0021] 1. Frame; 2. Conveying assembly; 21. Chain plate; 22. Conveying roller; 23. Sprocket; 24. Chain; 3. Bin door; 31. Adsorption magnetic strip; 4. Baking bin; 41. Protective mesh cover; 42. Fan; 43. Electric heating tube; 44. Groove; 5. Clamping and fixing assembly; 51. Clamping seat; 511. Mounting groove; 52. Clamping plate 1; 53. Clamping plate 2; 54. Guide wheel; 55. Spring structure; 551. Compression spring; 552. Compression column. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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] like Figure 1 As shown, an automatic conveyor rack for baking circuit boards includes a rack 1 and a conveyor assembly 2 arranged in the rack 1, wherein the conveyor assembly 2 includes a plurality of chain plates 21, a plurality of conveyor rollers 22 rotatably arranged in the rack 1, two sprocket wheels 23 sleeved on each conveyor roller 22, and chains 24 laid on the two groups of sprocket wheels 23, and the plurality of chain plates 21 are respectively connected between the two groups of chains 24, and are responsible for conveying circuit boards;

[0024] like Figure 1 and Figure 2 As shown, the baking chamber 4 is mounted on the frame 1, an electric heating tube 43 is connected to the baking chamber 4, and a plurality of fans 42 are arranged on the top surface of the baking chamber 4;

[0025] The top surface of the baking bin 4 is provided with a plurality of grooves 44 in sequence along the conveying direction. The housing of the fan 42 is mounted on the baking bin 4 by means of fastening screws, and the lower protruding portion of the housing is stuck in the groove 44. The upper portion of the housing is connected with a protective mesh cover 41. The fan 42 is used to direct the heat generated by the electric heating tube 43 to the circuit board, so that the coating layer on the circuit board can be dried quickly.

[0026] like Figure 1 and Figure 2 As shown, the clamping and fixing assembly 5 includes a clamping seat 51 connected to each chain plate 21, a clamping plate 1 52 and a clamping plate 2 53 connected to the end of each clamping seat 51, a group of guide wheels 54 connected to the inner wall of the clamping plate 1 52 and the clamping plate 2 53, and a spring structure 55 provided between the clamping plate 1 52 and the clamping plate 2 53 and the inner wall of the clamping seat 51;

[0027] Among them, the spring structure 55 includes a plurality of mounting grooves 511 arranged on both sides of the inner wall surface of the clamping seat 51, a compression spring 551 arranged in each mounting groove 511, and a compression column 552 arranged on the back side of the clamping plate 1 52 and the clamping plate 2 53 and corresponding to the compression spring 551 in the mounting groove 511. Each set of guide wheels 54 is made of rubber material and has the same size.

[0028] Among them, Figure 1 As shown, in this embodiment, both sides of the baking chamber 4 are rotatably provided with chamber doors 3, and the inner wall surface of the chamber door 3 and both sides of the baking chamber 4 are provided with adsorption magnetic strips 31, which are used for closing and opening the chamber door 3.

[0029] like Figures 1 to 3 As shown, in this embodiment, it should be noted that the actual size of each component in the application document is selected and installed before implementation according to the actual needs on site, wherein the conveying assembly 2 is a commercially available product of the prior art, and the conveying roller 22 is driven by a servo motor arranged on the frame 1. In addition, it should be noted that the application document only improves the shortcomings of many and cumbersome operating procedures, low production efficiency of mass-produced circuit boards, and low yield, and does not involve other aspects; the working principle of the automatic conveyor rack for baking circuit boards is introduced as follows:

[0030] During installation and use, the staff opens the doors 3 on both sides of the baking bin 4, and uses the conveying assembly 2 to convey the circuit board. When each chain plate 21 moves at a uniform speed with the conveying roller 22, the sprocket 23 and the chain 24;

[0031] The staff inserts each circuit board coated with the ink protective layer into each clamping seat 51. After the circuit board is inserted, the pressure column 552 on the back of the clamping plate 1 52 and the clamping plate 2 53 compresses the compression spring 551 in the installation groove 511, so that the compression spring 551 generates a rebound force after being compressed, and the guide wheel 54 is tightly pressed against the two sides of the circuit board, which can adapt to the clamping of circuit boards with different thicknesses.

[0032] When the circuit board to be baked enters the baking chamber 4, the chamber door 3 is closed to allow the adsorption magnetic strip 31 on the chamber door 3 and the adsorption magnetic strip 31 on the side of the baking chamber 4 to adhere to each other, and then the electric heating tube 43 is started to generate heat, and the fan 42 blows the heat generated by the electric heating tube 43 to the circuit board to quickly dry the coating layers on both sides of the circuit board. The utility model integrates drying and conveying into one, is suitable for drying the coating layers of different batches of circuit boards on the production line, and the circuit boards are evenly heated, which can effectively make the coloring of the coating layer more uniform, without the need for repeated transportation, reducing the production process and improving work efficiency.

[0033] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. An automatic conveyor rack for baking circuit boards, comprising a frame (1) and a conveyor assembly (2) arranged in the frame (1), wherein the conveyor assembly (2) comprises a plurality of chain plates (21), characterized in that: Also includes: A baking bin (4) is mounted on the frame (1), an electric heating tube (43) is connected to the baking bin (4), and a plurality of fans (42) are arranged on the top surface of the baking bin (4); A clamping and fixing assembly (5), the clamping and fixing assembly (5) comprising a clamping seat (51) connected to each chain plate (21), a clamping plate 1 (52) and a clamping plate 2 (53) connected to the end of each clamping seat (51), a group of guide wheels (54) connected to the inner wall surface of the clamping plate 1 (52) and the clamping plate 2 (53), and a spring structure (55) provided between the clamping plate 1 (52) and the clamping plate 2 (53) and the inner wall of the clamping seat (51).

2. The automatic conveyor rack for baking circuit boards according to claim 1, characterized in that: The spring structure (55) comprises a plurality of mounting grooves (511) arranged on both sides of the inner wall surface of the clamping seat (51), a compression spring (551) arranged in each mounting groove (511), and a compression column (552) arranged on the back side of the clamping plate 1 (52) and the clamping plate 2 (53) and connected to the compression spring (551) in the mounting groove (511).

3. The automatic conveyor rack for baking circuit boards according to claim 1, characterized in that: The conveying assembly (2) further comprises a plurality of conveying rollers (22) rotatably arranged in the frame (1), two sprocket wheels (23) sleeved on each conveying roller (22), and chains (24) laid on the two groups of sprocket wheels (23), and a plurality of chain plates (21) are respectively connected between the two groups of chains (24).

4. The automatic conveyor rack for baking circuit boards according to claim 1, characterized in that: Both sides of the baking bin (4) are rotatably provided with bin doors (3), and the inner wall surface of the bin door (3) and both sides of the baking bin (4) are provided with adsorption magnetic strips (31).

5. The automatic conveyor rack for baking circuit boards according to claim 1, characterized in that: Each set of guide wheels (54) is made of rubber material and has the same size.

6. The automatic conveyor rack for baking circuit boards according to claim 1, characterized in that: The top surface of the baking bin (4) is provided with a plurality of grooves (44) in sequence along the conveying direction; the housing of the fan (42) is mounted on the baking bin (4) by means of fastening screws, and the lower protruding portion of the housing is stuck in the grooves (44).

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