Pre-processing equipment and pre-processing process for circuit board processing

Abstract

The present invention relates to the technical field of circuit board processing, and in particular to a pre-treatment device and a pre-treatment process for circuit board processing. The volcanic ash mixture liquid thrown out is intercepted by the cooperation of arc plate 1 and arc plate 2, and the volcanic ash mixture liquid is thrown onto the upper and lower surfaces of the circuit board body, so that this part of the volcanic ash mixture liquid re-participates in the grinding operation, which is beneficial to improving the grinding efficiency. A pre-treatment device for circuit board processing includes an electric conveying roller, an electric nylon brush roller 1, an arc plate 1, an electric nylon brush roller 2, an arc plate 2 and a spraying assembly; a plurality of electric conveying rollers are rotatably connected to a box body; an electric nylon brush roller 1 is rotatably connected to the box body; an arc plate 1 is fixedly connected to the box body, and the arc plate 1 is located outside the electric nylon brush roller 1; an electric nylon brush roller 2 is rotatably connected to the box body; an arc plate 2 is fixedly connected to the box body.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board processing, and more specifically, to a pre-processing device and a pre-processing process for circuit board processing. Background Art

[0002] Circuit boards are used to install and connect electrical components and are basic components of electrical equipment.

[0003] When the circuit board is subjected to surface roughening pretreatment, a grinding method combining volcanic ash particles and nylon brushes is used to grind the upper and lower surfaces of the circuit board. The mixture of volcanic ash and water is sprayed onto the high-speed rotating brush, which drives the high-speed volcanic ash particles to grind the board surface to obtain the board surface roughness. However, when the brush rotates at high speed, the volcanic ash solution adhering to it will be thrown to the side away from the circuit board, thereby reducing the contact rate between the volcanic ash solution and the circuit board, which in turn leads to a decrease in grinding efficiency. Summary of the invention

[0004] In order to overcome the disadvantage that when the grinding brush rotates at high speed, the volcanic ash solution adhering to it will be thrown out to the side away from the circuit board, thereby reducing the contact rate between the volcanic ash solution and the circuit board, thereby causing a decrease in grinding efficiency, the present invention provides a pre-treatment device and a pre-treatment process for circuit board processing.

[0005] The technical implementation scheme of the present invention is:

[0006] A pre-treatment equipment for processing a circuit board, comprising a box body and a pipe one; the box body is connected with the pipe one; it also comprises an electric conveying roller, an electric nylon brush roller one, an arc plate one, an electric nylon brush roller two, an arc plate two and a spraying assembly; a plurality of electric conveying rollers are rotatably connected to the box body; an electric nylon brush roller one is rotatably connected to the box body; an arc plate one is fixedly connected to the box body, and the arc plate one is located on the outside of the electric nylon brush roller one; an electric nylon brush roller two is rotatably connected to the box body; an arc plate two is fixedly connected to the box body, and the arc plate two is located on the outside of the electric nylon brush roller two; the box body is connected with a spraying assembly, the spraying assembly is used to spray a volcanic ash mixture onto the contact position between the electric nylon brush roller one and the circuit board body, and the spraying assembly is also used to spray the volcanic ash mixture onto the contact position between the electric nylon brush roller two and the circuit board body.

[0007] More preferably, the spray assembly includes a baffle, a pipe 2 and a nozzle; an inclined baffle is arranged on the side of the electric nylon brush roller 1; another inclined baffle is arranged on the side of the electric nylon brush roller 2; all baffles are fixedly connected to the box; a pipe 2 is arranged between the electric nylon brush roller 1 and the corresponding baffle; another pipe 2 is arranged between the electric nylon brush roller 2 and the corresponding baffle; all pipes 2 pass through the box; each pipe 2 is connected to a plurality of nozzles, and the nozzle of the nozzle is facing the corresponding baffle; the baffle is used to reflect the liquid sprayed from the nozzle to the contact position between the electric nylon brush roller 1 and the circuit board body, and the baffle is also used to reflect the liquid sprayed from the nozzle to the contact position between the electric nylon brush roller 2 and the circuit board body.

[0008] More preferably, it also includes an auxiliary component; the auxiliary component is connected to the box body; the auxiliary component includes a ring, a push rod, an arc plate three and a rotating unit; a ring is rotatably connected to the front and rear sides of the box body; a push rod is commonly connected between all the rings, and the push rod is located in the gap between the electric nylon brush roller two and the arc plate two; the arc plate three is fixedly connected to the inside of the box body; a cavity is formed between the box body, the arc plate two and the arc plate three; the rotating unit is connected to the box body, and the rotating unit is used to drive the ring to rotate.

[0009] More preferably, it also includes a quick-release assembly; the quick-release assembly is connected to the circular ring; the quick-release assembly includes a round rod and a latch; each circular ring is connected to a round rod, and the round rod is slidably connected to the push rod; each circular rod is plugged with a latch, and the latch is plugged with the push rod.

[0010] More preferably, a driving assembly is further included; each round rod is rotatably connected to the corresponding round ring; the round ring is connected to the driving assembly, and the driving assembly is used to drive the round rod to rotate.

[0011] More preferably, a groove one is formed at the lower part of the arc plate two; a groove two is formed at the upper part of the arc plate three; a groove three is formed at the upper part of the arc plate two; and the groove three is aligned with the groove two.

[0012] More preferably, a shift block is further included; the push rod is fixedly connected with the shift block.

[0013] More preferably, it further comprises a fixing block; the push rod is divided into two parts, front and rear parts; the fixing block is fixedly connected to the rear end of the front push rod, and the fixing block is plugged into the rear push rod.

[0014] More preferably, a reinforcement strip is further included; a reinforcement strip is arranged inside each of the two push rod parts.

[0015] A pre-treatment process for circuit board processing includes the following working steps:

[0016] Step 1: Pickling: Use a spray machine to spray pickling liquid on the surface of the circuit board to pickle the circuit board. During the pickling process, select a fan-shaped nozzle. The spray pressure is greater than that of a conical nozzle. The spray direction of the liquid is fan-shaped, which helps to spray the liquid evenly. The fan-shaped nozzles should be staggered to avoid dead corners and ensure that every part of the board surface can contact the liquid.

[0017] Step 2: Grinding the board. The pickled circuit board is transported to the pre-treatment equipment for circuit board processing. The pre-treatment equipment for circuit board processing adopts a grinding method combining volcanic ash particles and nylon brushes. The mixture of volcanic ash and water is sprayed onto the high-speed rotating brush through spraying, so that the brush drives the high-speed volcanic ash particles to grind the board surface, thereby obtaining the board surface roughness;

[0018] Step 3: Cleaning: Cleaning the polished circuit board;

[0019] Step 4: Drying: Dry the cleaned circuit board.

[0020] Beneficial effects:

[0021] 1. The arc plate 1 and the arc plate 2 cooperate to intercept the thrown volcanic ash mixture, so that the volcanic ash mixture is re-mixed into the gap between the bristles of the electric nylon brush roller 1 and the electric nylon brush roller 2, and the volcanic ash mixture is thrown to the upper and lower surfaces of the circuit board body, so that this part of the volcanic ash mixture is re-participated in the grinding operation, which is conducive to improving the grinding efficiency;

[0022] Second, through the cooperation of the arc plate 2, the push rod and the arc plate 3, the volcanic ash mixture gathered in the lower inner part of the arc plate 2 is transferred to the contact position between the electric nylon brush roller 2 and the circuit board body, and re-participates in the grinding operation, thereby avoiding the problem that part of the volcanic ash mixture cannot re-participate in the grinding operation due to the inability of the arc plate 2 to reflect all the volcanic ash mixture back to the bristles of the electric nylon brush roller 2, thereby further improving the grinding efficiency. At the same time, through the cooperation of the round rod and the latch, the push rod can be quickly replaced manually without opening the box for replacement operation, which is very convenient. At the same time, the push rod is controlled by the motor 2 to rotate 90 degrees, so that the push rod will not slide and rub with the arc plate 2 and the arc plate 3 during the resetting process, thereby greatly reducing the wear of the push rod, which is beneficial to increasing the service life of the push rod and reducing the replacement frequency. In addition, during the rotation of the push rod, through the cooperation of the groove 1, the groove 2 and the groove 3, the push rod can avoid the arc plate 2 and the arc plate 3, thereby further reducing wear.

[0023] 3. The push rod is divided into two parts, front and rear parts. When the push rod divided into two parts is pulled out from the box, the reserved space between adjacent boxes can be greatly reduced, which is beneficial to saving equipment space. At the same time, by arranging a high-strength reinforcement strip inside the push rod divided into two parts, the problem of being unable to be plugged and fixed due to sagging of the push rod ends can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The schematic diagram of the structure of the pre-processing equipment for processing the circuit board of the present invention is shown;

[0025] Figure 2 The schematic diagram of the structure inside the pre-processing equipment for processing circuit boards of the present invention is shown;

[0026] Figure 3 A schematic diagram of the structure of the auxiliary component of the present invention is shown;

[0027] Figure 4 The present invention is shown Figure 3 The enlarged view of point A in the middle;

[0028] Figure 5 A schematic structural diagram of a quick-release assembly of the present invention is shown;

[0029] Figure 6 It shows a front view of the combination of the second and third circular arc plates of the present invention;

[0030] Figure 7 The schematic diagram of the structure of the combination of the fixing block and the reinforcing strip of the present invention is shown.

[0031] The markings in the figure are:

[0032] 1-box, 2-pipeline one, 3-electric conveyor roller, 4-electric nylon brush roller one, 5-arc plate one, 6-electric nylon brush roller two, 7-arc plate two, 8-circuit board body, 201-baffle, 202-pipeline two, 203-sprinkler, 204-ring, 205-push rod, 206-arc plate three, 207-motor one, 208-gear one, 209-gear ring one, 2010-round rod, 2011-latch, 2012-motor two, 2013-gear two, 2014-gear ring two, 2015-dial block, 2016-fixed block, 2017-reinforcement strip, 91-cavity, 92-groove one, 93-groove two, 94-groove three. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0034] Example 1

[0035] A pre-processing device for circuit board processing, such as Figure 1 and Figure 2 As shown, it includes a box body 1 and a pipe 2; the box body 1 is connected and bolted with a pipe 2, and the box body 1 is set to an alloy material; it also includes an electric conveying roller 3, an electric nylon brush roller 4, an arc plate 5, an electric nylon brush roller 6, an arc plate 7 and an injection assembly; a number of electric conveying rollers 3 are rotatably connected to the box body 1; an electric nylon brush roller 4 is rotatably connected to the box body 1; an arc plate 5 is bolted to the box body 1, and the arc plate 5 is located on the outside of the electric nylon brush roller 4; an electric nylon brush roller 6 is rotatably connected to the box body 1; an arc plate 27 is bolted to the box body 1, and the arc plate 27 is located on the outside of the electric nylon brush roller 6; an injection assembly is connected to the box body 1, and the injection assembly is used to spray a volcanic ash mixture on the contact position between the electric nylon brush roller 4 and the circuit board body 8, and the injection assembly is also used to spray a volcanic ash mixture on the contact position between the electric nylon brush roller 26 and the circuit board body 8.

[0036] The spray assembly includes a baffle 201, a pipe 202 and a nozzle 203; an inclined baffle 201 is arranged on the side of the electric nylon brush roller 1 4, and the baffle 201 is set to a wear-resistant material; another inclined baffle 201 is arranged on the side of the electric nylon brush roller 2 6; all baffles 201 are bolted to the box body 1; a pipe 202 is arranged between the electric nylon brush roller 1 4 and the corresponding baffle 201; between the electric nylon brush roller 2 6 and the corresponding baffle 201 Another pipe 202 is provided; all pipes 202 pass through the box body 1; each pipe 202 is connected and fixed with a plurality of nozzles 203, and the nozzle of the nozzle 203 faces the corresponding baffle 201; the baffle 201 is used to reflect the liquid sprayed from the nozzle 203 to the contact position between the electric nylon brush roller 1 4 and the circuit board body 8, and the baffle 201 is also used to reflect the liquid sprayed from the nozzle 203 to the contact position between the electric nylon brush roller 2 6 and the circuit board body 8.

[0037] First, manually connect the external infusion tube to the pipeline 202, and then start the electric conveying roller 3. The electric conveying roller 3 drives the circuit board body 8 to move to the left through friction, and then transports the volcanic ash mixture to the pipeline 202 through the external infusion tube. The volcanic ash mixture flows into the nozzle 203 through the pipeline 202, and then is sprayed onto the baffle 201, and then reflected to the position where the electric nylon brush roller 1 4 contacts the circuit board body 8, and reflected to the position where the electric nylon brush roller 2 6 contacts the circuit board body 8, and the electric nylon brush is started. The electric nylon brush roller 14 and the electric nylon brush roller 26 are configured such that the electric nylon brush roller 14 rotates in the same direction as the electric conveying roller 3 above, and the electric nylon brush roller 26 rotates in the same direction as the electric conveying roller 3 below, so that the upper side of the circuit board body 8 is polished by the electric nylon brush roller 14 in combination with the volcanic ash mixture, and the lower side of the circuit board body 8 is polished by the electric nylon brush roller 26 in combination with the volcanic ash mixture. During this process, part of the volcanic ash mixture will be mixed into the gap between the bristles of the electric nylon brush roller 14 and the electric nylon brush roller 26. When the electric nylon brush roller 1 4 and the electric nylon brush roller 2 6 rotate at high speed, the volcanic ash mixture is thrown out toward the side away from the circuit board body 8. In this process, the arc plate 1 5 and the arc plate 2 7 cooperate to intercept the thrown out volcanic ash mixture, so that the volcanic ash mixture is re-entrained into the gap between the bristles of the electric nylon brush roller 1 4 and the electric nylon brush roller 2 6. When the bristles of the electric nylon brush roller 1 4 and the electric nylon brush roller 2 6 contact the circuit board body 8 again, the electric nylon brush roller 1 4 and the electric nylon brush roller 2 6 will be re-entrained therein. The volcanic ash mixture in the gaps between the bristles is thrown onto the upper and lower surfaces of the circuit board body 8, so that this part of the volcanic ash mixture re-participates in the grinding operation, which is beneficial to improving the grinding efficiency. When in use, the arc plate 1 5 and the arc plate 2 7 cooperate to intercept the thrown volcanic ash mixture, so that the volcanic ash mixture is re-entrained into the gaps between the bristles of the electric nylon brush roller 1 4 and the electric nylon brush roller 2 6, and the volcanic ash mixture is thrown onto the upper and lower surfaces of the circuit board body 8, so that this part of the volcanic ash mixture re-participates in the grinding operation, which is beneficial to improving the grinding efficiency.

[0038] Example 2

[0039] On the basis of Example 1, Figure 3-Figure 6As shown, it also includes an auxiliary component; the box body 1 is connected to the auxiliary component; the auxiliary component includes a ring 204, a push rod 205, an arc plate three 206 and a rotating unit; a ring 204 is rotatably connected to the front and rear sides of the box body 1; a push rod 205 is commonly connected between all the rings 204, and the push rod 205 is located at the gap between the electric nylon brush roller 2 6 and the arc plate 2 7; the arc plate three 206 is bolted to the inner side of the box body 1; a cavity 91 is formed between the box body 1, the arc plate 2 7 and the arc plate three 206; a rotating unit is connected to the box body 1, and the rotating unit is used to drive the ring 204 to rotate, and the ring 204 drives the push rod 205 to perform a circular motion, so that the push rod 205 pushes the volcanic ash mixture in the cavity 91 upward.

[0040] The rotating unit includes a motor 207, a gear 208 and a gear ring 209; a motor 207 is bolted to the front and rear sides of the housing 1; the output shafts of the two motors 207 are fixedly connected to a gear 208; and the two rings 204 are fixedly connected to a gear ring 209, which meshes with the corresponding gear 208.

[0041] It also includes a quick-release assembly; the quick-release assembly is connected to the ring 204; the quick-release assembly includes a round rod 2010 and a pin 2011; each round ring 204 is connected to a round rod 2010, and the round rod 2010 is slidably connected to the push rod 205; each round rod 2010 is plugged with a pin 2011, and the pin 2011 is plugged with the push rod 205, and the pin 2011 is set to be made of alloy material.

[0042] It also includes a driving assembly; each round rod 2010 is rotatably connected to the corresponding ring 204; the ring 204 is connected to a driving assembly, which is used to drive the round rod 2010 to rotate, and the round rod 2010 drives the push rod 205 to rotate ninety degrees. When the push rod 205 moves back to its original position, it does not contact the arc plate 2 7 and the arc plate 3 206.

[0043] The driving assembly includes a motor 2012, a gear 2013 and a gear ring 2014; each of the two circular rings 204 is bolted with a motor 2012; each of the output shafts of the two motors 2012 is fixedly connected with a gear 2013; each of the two round rods 2010 is fixedly connected with a gear ring 2014, and the gear ring 2014 is meshed with the corresponding gear 2 2013.

[0044] A groove 1 92 is formed at the lower portion of the arc plate 2 7 ; a groove 2 93 is formed at the upper portion of the arc plate 3 206 ; a groove 3 94 is formed at the upper portion of the arc plate 2 7 ; the groove 3 94 is aligned with the groove 2 93 .

[0045] The push rod 205 is also provided with a shifting block 2015 which is fixedly connected to the push rod 205 to facilitate manual pulling out of the push rod 205.

[0046] When the arc plate 27 blocks and limits the volcanic ash mixture thrown out by the electric nylon brush roller 26, it is impossible to reflect all of the volcanic ash mixture back to the bristles of the electric nylon brush roller 26, that is, some of the volcanic ash mixture will accumulate in the lower inner part of the arc plate 27. At the same time, since the grinding brush on the electric nylon brush roller 26 is set as a spring brush with relatively loose bristles, the electric nylon brush roller 26 cannot push the volcanic ash mixture accumulated in the lower inner part of the arc plate 27 to move upward. At this time, some of the volcanic ash mixture accumulated in the lower inner part of the arc plate 27 will The ash mixture in the lower part of the cavity 91 is diffused into the lower part of the cavity 91, and the motor 207 is started. The motor 207 drives the gear 208 to rotate, the gear 208 drives the gear ring 209 to rotate, the gear ring 209 drives the ring 204 to rotate, and the ring 204 drives the push rod 205 to perform a circular motion. From the front to the back, the push rod 205 performs a counterclockwise circular motion, so that the push rod 205 moves to the inside of the cavity 91. At this time, the push rod 205 is in close contact with the arc plate 27, and the push rod 205 is in close contact with the arc plate 3 206. Then the push rod 205 pushes the volcanic ash mixture in the lower part of the cavity 91. The mixed liquid moves upward, and the high-speed push rod 205 moves to the groove 2 93 and stops immediately, so that this part of the volcanic ash mixed liquid flows to the contact position between the electric nylon brush roller 2 6 and the circuit board body 8 under the action of inertia, and re-participates in the grinding operation. Then the motor 1 207 drives the gear 1 208 to rotate in the opposite direction, so that the push rod 205 moves back to its original position. At this time, the volcanic ash mixed liquid gathered in the lower part of the inner side of the arc plate 2 7 flows into the lower part of the cavity 91 again, and then the above operation is repeated to transfer the volcanic ash mixed liquid in the lower part of the cavity 91 to the electric nylon brush roller 2 The contact position between roller 26 and circuit board body 8 re-participates in the grinding operation. When in use, the volcanic ash mixture gathered at the lower inner part of arc plate 27 is transferred to the contact position between electric nylon brush roller 26 and circuit board body 8 through the cooperation of arc plate 27, push rod 205 and arc plate 3 206, and re-participates in the grinding operation, thereby avoiding the problem that part of the volcanic ash mixture cannot be reflected back to the bristles of electric nylon brush roller 26 by arc plate 27, thereby further improving the grinding efficiency.

[0047] When the push rod 205 moves in the cavity 91, the push rod 205 will slide on the surface of the arc plate 27 and the arc plate 3 206, and part of the volcanic ash mixture will be in the form of a liquid film, mixed in the gap between the push rod 205 and the arc plate 27, and the gap between the push rod 205 and the arc plate 3 206, so that the push rod 205 is prone to wear. When the push rod 205 is severely worn, the sealing performance between it and the arc plate 27 and the arc plate 3 206 is greatly reduced, thereby weakening the transfer function of the volcanic ash mixture in the cavity 91, and even causing the transfer function to fail. Therefore, the push rod 205 is assembled on the round rod in an inserted manner. 2010, and the push rod 205 is fixed on the round rod 2010 by the pin 2011. During regular maintenance, the push rod 205 is manually pulled out, and then the shift block 2015 is pulled forward. The shift block 2015 drives the push rod 205 to move forward, and the push rod 205 is quickly taken out, and then a new push rod 205 is inserted into the round rod 2010, and the new push rod 205 is fixed on the round rod 2010 by the pin 2011, completing the convenient replacement operation. When in use, the round rod 2010 and the pin 2011 cooperate to enable the push rod 205 to be quickly replaced manually without opening the box body 1 for replacement operation, which is very convenient.

[0048] When the push rod 205 moves to the groove 2 93, before the push rod 205 moves back to its original position, the motor 2 2012 is started, the motor 2 2012 drives the gear 2 2013 to rotate, the gear 2 2013 drives the gear ring 2 2014 to rotate, the gear ring 2 2014 drives the round rod 2010 to rotate, and the round rod 2010 drives the push rod 205 to rotate, so that the push rod 205 rotates ninety degrees in the groove 2 93 and the groove 3 94, and then the motor 1 207 controls the push rod 205 to move back to the top of the groove 1 92, and then the motor 2 2012 controls the push rod 205 to rotate back to its original position, completing the reset operation of the push rod 205. This process In the process, the push rod 205 will not contact the arc plate 2 7 and the arc plate 3 206, which is beneficial to reducing wear. When in use, the push rod 205 is controlled by the motor 2012 to rotate 90 degrees, so that the push rod 205 will not have sliding friction with the arc plate 2 7 and the arc plate 3 206 during the resetting process, thereby greatly reducing the wear degree of the push rod 205, which is beneficial to increasing the service life of the push rod 205 and reducing the replacement frequency. In addition, during the rotation of the push rod 205, the groove 1 92, the groove 2 93 and the groove 3 94 cooperate to enable the push rod 205 to avoid the arc plate 2 7 and the arc plate 3 206, further reducing wear.

[0049] Example 3

[0050] On the basis of Example 2, Figure 7 As shown, it also includes a fixing block 2016; the push rod 205 is divided into two parts, front and rear; the fixing block 2016 is welded to the rear end of the front push rod 205, and the fixing block 2016 is plugged into the rear push rod 205.

[0051] A reinforcement strip 2017 is also included; a reinforcement strip 2017 is disposed inside each of the two push rods 205 to prevent the push rods 205 from deforming.

[0052] If the boxes 1 are arranged front and back, during the replacement process of the push rod 205, sufficient space needs to be reserved between the adjacent boxes 1 so that the push rod 205 can be completely pulled out. Therefore, the push rod 205 is divided into two parts, and the facing ends of the two push rods 205 are plugged together through the fixing block 2016. When replacing, the two latches 2011 are manually pulled out, and then the front push rod 205 is pulled forward to drive the fixing block 2016 away from the rear push rod 205, and the front push rod 205 is pulled out from the front round rod 2010, and then the rear push rod 205 is pulled backward to pull the rear push rod 205 out from the rear round rod 2010. When in use, the push rod 205 is divided into front and rear parts. When the push rod 205 divided into front and rear parts is pulled out from the box 1, the space reserved between the adjacent boxes 1 can be greatly reduced, which is beneficial to saving equipment space.

[0053] During the replacement process, after the new push rod 205 divided into two parts is inserted into the two round rods 2010, the push rod 205 made of wear-resistant material has relatively low rigidity, and the ends of the two parts of the new push rod 205 will sag slightly, resulting in the inability to insert the fixing block 2016 into the rear part of the new push rod 205. Therefore, a high-strength reinforcement strip 2017 is set inside the push rod 205 divided into two parts to avoid the drooping of the end of the push rod 205, thereby avoiding the problem of fixation failure. When in use, a high-strength reinforcement strip 2017 is set inside the push rod 205 divided into two parts to avoid the problem of failure to connect and fix due to sagging of the end of the push rod 205.

[0054] A pre-treatment process for circuit board processing includes the following working steps:

[0055] Step 1: Pickling: Use a spray machine to spray pickling liquid on the surface of the circuit board to pickle the circuit board. During the pickling process, select a fan-shaped nozzle. The spray pressure is greater than that of a conical nozzle. The spray direction of the liquid is fan-shaped, which helps to spray the liquid evenly. The fan-shaped nozzles should be staggered to avoid dead corners and ensure that every part of the board surface can contact the liquid.

[0056] Step 2: Grinding the board. The pickled circuit board is transported to the pre-treatment equipment for circuit board processing. The pre-treatment equipment for circuit board processing adopts a grinding method combining volcanic ash particles and nylon brushes. The mixture of volcanic ash and water is sprayed onto the high-speed rotating brush through spraying, so that the brush drives the high-speed volcanic ash particles to grind the board surface, thereby obtaining the board surface roughness;

[0057] Step 3: Cleaning: Cleaning the polished circuit board;

[0058] Step 4: Drying: Dry the cleaned circuit board.

[0059] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A pre-processing device for processing a circuit board, comprising a box (1); a pipe (2) is connected to the box (1); the characteristics are: A plurality of electric conveying rollers (3) are rotatably connected to the box body (1); an electric nylon brush roller (4) is rotatably connected to the box body (1); an arc plate (5) is fixedly connected to the box body (1), and the arc plate (5) is located outside the electric nylon brush roller (4); an electric nylon brush roller (6) is rotatably connected to the box body (1); an arc plate (7) is fixedly connected to the box body (1), and the arc plate (7) is located outside the electric nylon brush roller (6); a spray assembly is connected to the box body (1), and the spray assembly is used to spray a volcanic ash mixture onto the contact position between the electric nylon brush roller (4) and the circuit board body (8), and the spray assembly is also used to spray the volcanic ash mixture onto the contact position between the electric nylon brush roller (6) and the circuit board body (8); The spray assembly comprises a baffle (201); an inclined baffle (201) is arranged on the side of the electric nylon brush roller 1 (4); another inclined baffle (201) is arranged on the side of the electric nylon brush roller 2 (6); all the baffles (201) are fixedly connected to the box body (1); a pipe 2 (202) is arranged between the electric nylon brush roller 1 (4) and the corresponding baffle (201); another pipe 2 (202) is arranged between the electric nylon brush roller 2 (6) and the corresponding baffle (201); All pipes 2 (202) pass through the box body (1); each pipe 2 (202) is connected to a plurality of nozzles (203), and the nozzles of the nozzles (203) face the corresponding baffles (201); the baffles (201) are used to reflect the liquid sprayed by the nozzles (203) to the contact position between the electric nylon brush roller 1 (4) and the circuit board body (8), and the baffles (201) are also used to reflect the liquid sprayed by the nozzles (203) to the contact position between the electric nylon brush roller 2 (6) and the circuit board body (8); The invention also comprises an auxiliary component; the auxiliary component is connected to the box body (1); the auxiliary component comprises a circular ring (204); the front side and the rear side of the box body (1) are both rotatably connected to a circular ring (204); a push rod (205) is commonly connected between all the circular rings (204), and the push rod (205) is located at the gap between the second electric nylon brush roller (6) and the second circular arc plate (7); the inner side of the box body (1) is fixedly connected to the third circular arc plate (206); a cavity (91) is formed between the box body (1), the second circular arc plate (7) and the third circular arc plate (206); and a rotating unit is connected to the box body (1), and the rotating unit is used to drive the circular ring (204) to rotate.

2. A pre-processing device for circuit board processing according to claim 1, characterized in that: The quick-release assembly is also included; the quick-release assembly is connected to the circular ring (204); the quick-release assembly includes a round rod (2010); each circular ring (204) is connected to a round rod (2010), and the round rod (2010) is slidably connected to the push rod (205); each round rod (2010) is plugged with a latch (211), and the latch (211) is plugged with the push rod (205).

3. A circuit board processing pre-processing device according to claim 2, characterized in that: It also includes a driving assembly; each round rod (2010) is rotatably connected to a corresponding circular ring (204); the circular ring (204) is connected to a driving assembly, and the driving assembly is used to drive the round rod (2010) to rotate.

4. A pre-processing device for circuit board processing according to claim 3, characterized in that: The lower part of the arc plate 2 (7) is provided with a groove 1 (92); the upper part of the arc plate 3 (206) is provided with a groove 2 (93); the upper part of the arc plate 2 (7) is provided with a groove 3 (94); the groove 3 (94) is aligned with the groove 2 (93).

5. A pre-processing device for circuit board processing according to claim 3, characterized in that: It also includes a shifting block (2015); the shifting block (2015) is fixedly connected to the push rod (205).

6. A pre-processing device for circuit board processing according to any one of claims 4-5, characterized in that: It also includes a fixing block (2016); the push rod (205) is divided into two parts, front and rear; the fixing block (2016) is fixedly connected to the rear end of the front push rod (205), and the fixing block (2016) is plugged into the rear push rod (205).

7. A pre-processing device for circuit board processing according to claim 6, characterized in that: It also includes a reinforcement strip (2017); a reinforcement strip (2017) is arranged inside each of the two push rod parts (205).

8. A pre-treatment process for circuit board processing, characterized in that: The process uses the circuit board processing pre-processing equipment according to claim 7, and includes the following working steps: Step 1: Pickling: Use a spray machine to spray pickling liquid on the surface of the circuit board to pickle the circuit board. During the pickling process, select a fan-shaped nozzle. The spray pressure is greater than that of a conical nozzle. The spray direction of the liquid is fan-shaped, which helps to spray the liquid evenly. The fan-shaped nozzles should be staggered to avoid dead corners and ensure that every part of the board surface can contact the liquid. Step 2: Grinding the board. The pickled circuit board is transported to the pre-treatment equipment for circuit board processing. The pre-treatment equipment for circuit board processing adopts a grinding method combining volcanic ash particles and nylon brushes. The mixture of volcanic ash and water is sprayed onto the high-speed rotating brush through spraying, so that the brush drives the high-speed volcanic ash particles to grind the board surface, thereby obtaining the board surface roughness; Step 3: Cleaning: Cleaning the polished circuit board; Step 4: Drying: Dry the cleaned circuit board.

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