Automatic double-sided coating and drying equipment for circuit board

Abstract

The utility model relates to the technical field of circuit board processing, in particular to automatic double-sided coating and drying equipment for a circuit board. Comprising a positioning jig used for placing a circuit board, a conveying mechanism used for circularly conveying the positioning jig, an overturning mechanism used for overturning the positioning jig, and a material receiving and discharging station used for receiving and discharging materials, wherein the overturning mechanism and the material receiving and discharging station are sequentially arranged on the conveying mechanism; the three-axis coating mechanism is used for coating one surface of the circuit board; and the drying mechanism is used for drying the coated circuit board. According to the automatic double-sided coating and drying equipment for the circuit board, the conveying mechanism for circularly conveying the positioning jig is adopted, discharging is carried out at the material receiving and discharging station, one side of the circuit board is coated and dried through the three-axis coating mechanism and the drying mechanism in sequence, and then the circuit board is overturned through the overturning mechanism; and the other surface of the circuit board is coated and dried through the three-axis coating mechanism and the drying mechanism in sequence, and then material receiving is performed at the material receiving and discharging station, so that assembly line work can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to automatic double-sided coating and drying equipment for circuit boards. Background Art

[0002] With the development of society and industrialization, there is an increasing need to coat and dry industrial products in the industrial production process. For example, circuit boards now need to be sprayed with conformal coatings for protection after welding and testing.

[0003] Currently, most of the methods used are manual spraying or automatic coating machine spraying. Manual spraying of conformal coating cannot guarantee the spraying thickness and quality, and the efficiency is low, the labor cost is high, and the automatic coating machine spraying time is relatively long, the adjustment procedure is relatively complicated, and the equipment cost is high.

[0004] The Chinese utility model patent with application number 202021685808.5 discloses a device that can realize automatic coating and drying, including a base, a body fixedly connected to the top of the base, a temperature zone fixedly connected to the middle position of the body, a circuit board tray fixedly connected to the inner bottom of the temperature zone, a fixture fixedly connected to the top side of the circuit board tray, a third stepper motor fixedly connected to the top middle position of the circuit board tray, a first slide fixedly connected to both sides of the third stepper motor, a first ball screw provided at the middle position of the two-axis lead screw slide, a circuit board tray provided in the middle of the first ball screw, and a first stepper motor provided outside the two-axis lead screw slide. The patent improves the efficiency of spraying by setting up a two-axis lead screw slide, but the patent cannot realize assembly line operation. Summary of the invention

[0005] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide an automatic double-sided coating and drying device for a circuit board.

[0006] The purpose of the utility model is achieved through the following technical scheme: an automatic double-sided coating and drying equipment for circuit boards, including a positioning jig for placing circuit boards, a conveying mechanism for cyclically conveying the positioning jig, and a flipping mechanism for flipping the positioning jig arranged in sequence on the conveying mechanism, a material receiving and unloading station for receiving and unloading materials, a three-axis coating mechanism for coating one side of the circuit board, and a drying mechanism for drying the coated circuit board.

[0007] Furthermore, the conveying mechanism includes an upper conveyor belt, a lower conveyor belt arranged parallel and spaced below the upper conveyor belt, a left elevator installed at the left ends of the upper conveyor belt and the lower conveyor belt, and a right elevator installed at the right ends of the upper conveyor belt and the lower conveyor belt. The turning mechanism, three-axis coating mechanism and drying mechanism are sequentially arranged on the upper conveyor belt.

[0008] Furthermore, a rectangular array on one side of the positioning fixture has a plurality of mounting holes for placing circuit boards.

[0009] Furthermore, a fixing clip for fixing the circuit board is installed on one side of the positioning fixture at a position corresponding to each mounting hole.

[0010] Furthermore, the flipping mechanism includes a bottom plate arranged below the positioning jig, a first cylinder for driving the bottom plate to move up and down, a flipping plate arranged above the positioning jig, two motors arranged on both sides of the flipping plate and used to drive the flipping plate to rotate, a top plate arranged above the flipping plate, and a second cylinder for driving the top plate to move up and down.

[0011] Furthermore, the flipping mechanism also includes clamping members respectively arranged on the two motors and two third cylinders respectively used to drive the two clamping members to move relative to each other.

[0012] Furthermore, the three-axis coating mechanism includes a nozzle, an up-down moving mechanism for driving the nozzle to move up and down, a left-right moving mechanism for driving the nozzle to move left and right, and a front-back moving mechanism for driving the nozzle to move front-back.

[0013] Furthermore, the drying mechanism is a tunnel oven.

[0014] The beneficial effect of the utility model is that the automatic double-sided coating and drying equipment for circuit boards of the utility model adopts a conveying mechanism of a circulating conveying and positioning fixture, first discharges the materials at the material collecting and discharging station, and then coats and dries one side of the circuit board through a three-axis coating mechanism and a drying mechanism, and then flips it through a flipping mechanism, and then coats and dries the other side of the circuit board through a three-axis coating mechanism and a drying mechanism, and then collects the materials at the material collecting and discharging station, which can realize assembly line operation, has a stable structure, is easy to operate, saves equipment space, and improves product quality stability. Compared with manual operation, the efficiency can be increased by more than 25%, and the product yield can be increased by 10%. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of the utility model.

[0016] Figure 2 It is a three-dimensional diagram of the utility model with the shell removed.

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

[0018] Figure 4 It is a stereoscopic diagram of the three-axis coating mechanism of the utility model.

[0019] Figure 5 It is a three-dimensional diagram of the positioning fixture of the utility model.

[0020] The figures are marked as follows: circuit board 10, positioning fixture 20, mounting hole 201, conveying mechanism 1, upper conveyor belt 11, lower conveyor belt 12, left elevator 13, right elevator 14, flipping mechanism 2, bottom plate 21, first cylinder 22, flipping plate 23, motor 24, top plate 25, second cylinder 26, clamping member 27, third cylinder 28, material collecting and releasing station 3, three-axis coating mechanism 4, nozzle 41, up and down moving mechanism 42, left and right moving mechanism 43, front and back moving mechanism 44, drying mechanism 5. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the following embodiments and attached Figure 1-5 To further illustrate the present invention, the contents mentioned in the implementation modes are not intended to limit the present invention.

[0022] See Figure 1-5 , an automatic double-sided coating and drying equipment for circuit boards, comprising a positioning fixture 20 for placing a circuit board 10, a conveying mechanism 1 for cyclically conveying the positioning fixture 20, and a flipping mechanism 2 for flipping the positioning fixture 20, which is sequentially arranged on the conveying mechanism 1, a material receiving and unloading station 3 for receiving and unloading materials, a three-axis coating mechanism 4 for coating one side of the circuit board 10, and a drying mechanism 5 for drying the coated circuit board 10.

[0023] The automatic double-sided coating and drying equipment for circuit boards 10 of the utility model adopts a conveying mechanism 1 of a circulating conveying and positioning fixture 20, firstly discharges the materials at the material collecting and discharging station 3, and then coats and dries one side of the circuit board 10 through a three-axis coating mechanism 4 and a drying mechanism 5, and then flips it through a flipping mechanism 2, and then coats and dries the other side of the circuit board 10 through a three-axis coating mechanism 4 and a drying mechanism 5, and then collects the materials at the material collecting and discharging station 3, so as to realize assembly line operation, have a stable structure, be easy to operate, save equipment space, and improve product quality stability. Compared with manual operation, the efficiency can be increased by more than 25%, and the product yield can be increased by 10%.

[0024] The existing manual operation has low efficiency, with a production capacity of 89pcs / H for 2 people and natural drying; there are unstable quality factors in manual glue brushing, and the product yield can only reach 90%; the circuit board 10 automatic double-sided coating and drying equipment of the utility model has automatic positioning of the product, a production capacity of 120pcs / H, and an automatic coating yield of 99%.

[0025] In this embodiment, the conveying mechanism 1 includes an upper conveying belt 11, a lower conveying belt 12 arranged parallel and spaced below the upper conveying belt 11, a left elevator 13 installed at the left ends of the upper conveying belt 11 and the lower conveying belt 12, and a right elevator 14 installed at the right ends of the upper conveying belt 11 and the lower conveying belt 12, and the turning mechanism 2, the three-axis coating mechanism 4 and the drying mechanism 5 are sequentially arranged on the upper conveying belt 11. The above-mentioned structure can realize the cyclic conveyance of the positioning fixture 20.

[0026] In this embodiment, a rectangular array on one side of the positioning fixture 20 has a plurality of mounting holes 201 for placing the circuit board 10. The provision of a plurality of mounting holes 201 allows coating and drying of a plurality of circuit boards 10 at one time.

[0027] In this embodiment, a fixing clip (not shown in the figure) for fixing the circuit board 10 is installed on one side of the positioning fixture 20 corresponding to the position of each mounting hole 201 . The fixing clip is used to fix the circuit board 10 .

[0028] In this embodiment, the flip mechanism 2 includes a bottom plate 21 disposed below the positioning fixture 20, a first cylinder 22 for driving the bottom plate 21 to move up and down, a flip plate 23 disposed above the positioning fixture 20, two motors 24 disposed on both sides of the flip plate 23 and used to drive the flip plate 23 to rotate, a top plate 25 disposed above the flip plate 23, and a second cylinder 26 for driving the top plate 25 to move up and down. Specifically, the bottom plate 21 is located at the front side between the output shafts of the two motors 24, and the top plate 25 is located at the rear side between the output shafts of the two motors 24. The first cylinder 22 drives the bottom plate 21 to move up, and lifts the positioning fixture 20 that needs to be flipped on the upper conveyor belt 11 onto the flip plate 23. The first cylinder 22 drives the bottom plate 21 to move down. After the two motors 24 drive the flip plate 23 to drive the positioning fixture 20 to rotate 180°, the second cylinder 26 drives the top plate 25 to move down to adsorb the positioning fixture 20 on the flip plate 23, and then continues to move down to place the positioning fixture 20 on the upper conveyor belt 11. The flipping mechanism 2 of the utility model can also be implemented in other forms, such as dividing the upper conveyor belt 11 into multiple sections, each section is driven by a separate motor 24 and a chain, and the section of the upper conveyor belt 11 where the positioning fixture 20 to be flipped is located is directly flipped, and then the direction of the motor 24 of the section of the upper conveyor belt 11 is changed. Any obvious replacement without departing from the concept of the utility model is within the protection scope of the utility model.

[0029] In this embodiment, the flipping mechanism 2 further includes clamping members 27 respectively provided on the two motors 24 and two third cylinders 28 respectively used to drive the two clamping members 27 to move relative to each other. The two third cylinders 28 drive the clamping members 27 to move relative to each other to clamp the positioning fixture 20 and then flip it.

[0030] In this embodiment, the three-axis coating mechanism 4 includes a nozzle 41, an up-down moving mechanism 42 for driving the nozzle 41 to move up and down, a left-right moving mechanism 43 for driving the nozzle 41 to move left and right, and a front-back moving mechanism 44 for driving the nozzle 41 to move forward and backward. The above-mentioned structure can realize three-dimensional coating of the circuit board 10. Specifically, the up-down moving mechanism 42 can be driven by a cylinder, and the left-right moving mechanism 43 and the front-back moving mechanism 44 can be driven by a motor and a lead screw. The above-mentioned moving mechanisms are common knowledge in the art and will not be described in detail.

[0031] In this embodiment, the drying mechanism 5 is a tunnel furnace. The tunnel furnace is used for high drying efficiency.

[0032] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A circuit board automatic double-sided coating and drying equipment, characterized in that: It includes a positioning jig for placing a circuit board, a conveying mechanism for cyclically conveying the positioning jig, a flipping mechanism for flipping the positioning jig and arranged on the conveying mechanism in sequence, a material receiving and unloading station for receiving and unloading materials, a three-axis coating mechanism for coating one side of the circuit board, and a drying mechanism for drying the coated circuit board.

2. The automatic double-sided coating and drying equipment for circuit boards according to claim 1 is characterized in that: The conveying mechanism includes an upper conveyor belt, a lower conveyor belt arranged in parallel and spaced relationship below the upper conveyor belt, a left elevator installed at the left ends of the upper conveyor belt and the lower conveyor belt, and a right elevator installed at the right ends of the upper conveyor belt and the lower conveyor belt. The turning mechanism, the three-axis coating mechanism and the drying mechanism are sequentially arranged on the upper conveyor belt.

3. The automatic double-sided coating and drying equipment for circuit boards according to claim 1 is characterized in that: A rectangular array on one side of the positioning fixture has a plurality of mounting holes for placing circuit boards.

4. The automatic double-sided coating and drying equipment for circuit boards according to claim 3 is characterized in that: A fixing clip for fixing the circuit board is installed on one side of the positioning fixture at a position corresponding to each mounting hole.

5. The automatic double-sided coating and drying equipment for circuit boards according to claim 1 is characterized in that: The flipping mechanism includes a bottom plate arranged below the positioning jig, a first cylinder for driving the bottom plate to move up and down, a flipping plate arranged above the positioning jig, two motors arranged on both sides of the flipping plate and used to drive the flipping plate to rotate, a top plate arranged above the flipping plate, and a second cylinder for driving the top plate to move up and down.

6. The automatic double-sided coating and drying equipment for circuit boards according to claim 5, characterized in that: The flipping mechanism further comprises clamping members respectively arranged on the two motors and two third cylinders respectively used for driving the two clamping members to move relative to each other.

7. The automatic double-sided coating and drying equipment for circuit boards according to claim 1, characterized in that: The three-axis coating mechanism comprises a nozzle, an up-down moving mechanism for driving the nozzle to move up and down, a left-right moving mechanism for driving the nozzle to move left and right, and a front-back moving mechanism for driving the nozzle to move front-back.

8. The automatic double-sided coating and drying equipment for circuit boards according to claim 1, characterized in that: The drying mechanism is a tunnel furnace.

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